JP6442970B2 - Electro-optical device and electronic apparatus - Google Patents

Description

  The present invention relates to an electro-optical device and an electronic apparatus equipped with the electro-optical device.

  A head mounted display (HMD) that is mounted on the head of a human body and observes an image is excellent in convenience that it is small and light and can be carried. For example, a stereoscopic display is provided by images corresponding to the left eye and the right eye, respectively. Can be provided. For example, Patent Document 1 proposes an HMD having a see-through function for displaying image light in an overlapping manner without disturbing an external image (external image).

The HMD described in Patent Literature 1 includes a video display device and a projection fluoroscopic device, and the video display device is disposed so as to be in contact with the wearer's temporal region.
The video display device includes a self-luminous organic electroluminescence display device. The organic electroluminescence display device includes an organic electroluminescence element as a light emitting element, a drive circuit for driving the organic electroluminescence element, and the like. The organic electroluminescence element includes an anode, a cathode, a light emitting functional layer sandwiched between these electrodes, and the like. When a current is passed between the anode and the cathode, the light emitting functional layer emits light.
With this configuration, the video display apparatus outputs image light to be displayed such as a moving image to the projection fluoroscopic apparatus side.
The projection see-through device includes a light guide member, a prism, and the like, and guides image light emitted from the video display device and light of the external image to the wearer.

JP 2013-200554 A

  However, the organic electroluminescence element generates heat due to a current flowing between the anode and the cathode. Since the drive circuit controls the entire current flowing through the plurality of organic electroluminescence elements, a large current flows and generates a large amount of heat as compared with a single organic electroluminescence element. That is, the HMD described in Patent Document 1 has a problem that when the image light to be displayed such as a moving image is output, the organic electroluminescence element and the drive circuit generate heat and the temperature of the video display device rises. doing. In addition, as the temperature rises, there is a problem that the wearing feeling (comfort) at the time of use may be impaired.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 An electro-optical device according to this application example is an electro-optical device that can be worn on a human body, and includes a display unit having a pixel and a drive circuit that drives the pixel, and a panel case that houses the display unit. And an exterior case that houses the panel case, the exterior case having a first wall and a second wall, the first wall having a contact surface with respect to the human body. The panel case is disposed between the first wall and the second wall, and a distance between the first wall and the panel case is the second wall and the panel case. It is characterized by being larger than the distance between.

  For example, a first wall and a second wall are sequentially arranged in a first direction from the contact surface to the human body toward the panel case, and the first wall has a contact surface (contact surface) to the human body. . Further, the panel case is disposed between the first wall and the second wall. Therefore, a space formed between the first wall and the panel case is disposed between the contact surface and the panel case. Furthermore, when the panel case is disposed away from the second wall, a space is disposed between the panel case and the second wall.

  The distance between the first wall and the panel case is greater than the distance between the second wall and the panel case, i.e., between the first wall (contact surface) and the panel case, the second wall Larger space is arranged than between the wall and the panel case, and the heat insulation of the space between the first wall and the panel case is enhanced compared to the space between the second wall and the panel case. Yes. Thus, when a space having the same size as the space between the second wall and the panel case is disposed between the first wall (contact surface) and the panel case, or the second wall and the panel case Compared with the case where a space smaller than the space between the two is placed, the heat of the panel case is not easily transmitted (propagated) to the first wall (contact surface), and the temperature of the contact surface is less likely to rise. This makes it possible to suppress discomfort due to a rise in temperature when the head is worn and used, and to ensure comfort without impairing the feeling of wearing.

  Application Example 2 In the electro-optical device according to the application example described above, air at atmospheric pressure or between the first wall and the panel case, and between the second wall and the panel case. It is preferable that one of the decompressed air is filled.

  By filling the space between the first wall and the panel case with atmospheric pressure air or decompressed air, the space can be reduced in weight compared to, for example, filling with liquid or solid, and the space The heat insulation of the space can be improved. Similarly, by filling the space between the second wall and the panel case with atmospheric air or decompressed air, the space can be reduced in weight compared to, for example, filling with liquid or solid. And the heat insulation of the said space can be improved.

  Application Example 3 In the electro-optical device according to the application example described above, a distance between the first wall and the panel case is 12 mm or less, and a distance between the second wall and the panel case. Is preferably 0 mm or more.

If the distance between the first wall and the panel case is 12 mm or less, convection is less likely to occur in the space between the first wall and the panel case, and heat transfer by air convection (air circulation) is prevented. Can be suppressed. That is, the heat of the panel case is hardly transmitted to the first wall by air convection.
By making the distance between the second wall and the panel case larger than 0 mm and providing a space between the second wall and the panel case, the heat of the panel case is hardly transmitted to the second wall. . Further, even when the distance between the second wall and the panel case is 0 mm and the second wall is in contact with the panel case, the second wall does not have a contact surface. The effect on the surface is small. Further, by setting the distance between the second wall and the panel case to 0 mm, the distance between the first wall and the second wall can be reduced, and the exterior case can be made thinner.

  Application Example 4 An electro-optical device according to this application example is an electro-optical device that can be worn on a human body, and includes a display unit having a pixel and a drive circuit that drives the pixel, and a panel case that houses the display unit. And an exterior case that houses the panel case, the exterior case having a first wall, a third wall, and a second wall, wherein the first wall is The panel case is disposed between the second wall and the third wall, the distance between the first wall and the third wall and the first wall; The total distance between the third wall and the panel case is larger than the distance between the second wall and the panel case.

  For example, a first wall, a third wall, and a second wall are sequentially arranged in a first direction from the contact surface to the human body toward the panel case, and the first wall is a contact surface (contact surface) to the human body. have. Further, the panel case is disposed between the second wall and the third wall. Therefore, a space formed between the first wall and the third wall and a space formed between the third wall and the panel case are disposed between the contact surface and the panel case. Is done. Furthermore, when the panel case is disposed away from the second wall, a space is also disposed between the panel case and the second wall.

  The sum of the distance between the first wall and the third wall and the distance between the third wall and the panel case is larger than the distance between the second wall and the panel case. That is, the heat insulation of the space between the first wall and the panel case is enhanced as compared with the space between the second wall and the panel case. Thus, when a space having the same size as the space between the second wall and the panel case is disposed between the first wall (contact surface) and the panel case, or the second wall and the panel case Compared with the case where a space smaller than the space between the two is placed, the heat of the panel case is not easily transmitted (propagated) to the first wall (contact surface), and the temperature of the contact surface is less likely to rise.

  Application Example 5 In the electro-optical device according to the application example, the first wall and the third wall, the third wall and the panel case, and the second wall. It is preferable that either the atmospheric pressure air or the decompressed air is filled between the panel case and the panel case.

  By filling the space between the first wall and the third wall with atmospheric air or decompressed air, for example, the space can be reduced in weight as compared with the case where liquid or solid is filled. And the heat insulation of the said space can be improved. Similarly, by filling the space between the third wall and the panel case with atmospheric pressure air or decompressed air, the space can be reduced in weight compared to, for example, filling with liquid or solid. The heat insulation of the space can be improved. Similarly, by filling the space between the second wall and the panel case with atmospheric air or decompressed air, the space can be reduced in weight compared to, for example, liquid or solid. The heat insulation of the space can be improved.

  Application Example 6 An electro-optical device according to this application example is an electro-optical device that can be worn on a human body, and includes a display unit having a pixel and a drive circuit that drives the pixel, and a panel case that houses the display unit. And an exterior case that houses the panel case and has a contact surface with respect to the human body, wherein the contact surface is disposed with at least one space from the panel case.

The electro-optical device according to this application example includes a display unit that outputs image light, a panel case that stores the display unit, an exterior case that stores the panel case, and the like. When a current is supplied to the pixel or the drive circuit and image light is output, the pixel or the drive circuit generates heat due to the current, and the temperature of the display unit rises. Furthermore, heat generated by the pixels and the drive circuit is transmitted to the panel case, and the temperature of the panel case also rises. The contact surface (contact surface) with respect to the human body is disposed with at least one space from the panel case. The space is a region filled with gas, and is a region excellent in heat insulation that hardly transmits (propagates) heat compared to a solid or liquid. That is, a region (space) excellent in heat insulation is disposed between the contact surface and the panel case.
Therefore, heat generated by the pixels of the display unit and the driving circuit is not easily transmitted (propagated) to the contact surface side, and the temperature of the contact surface is not easily increased.

  Application Example 7 In the electro-optical device according to the application example described above, it is preferable that the space is filled with either atmospheric pressure air or decompressed air.

  By filling the space arranged between the contact surface and the panel case with atmospheric air or depressurized air, for example, compared with the case where liquid or solid is filled, the space is reduced in weight. And the heat insulation of the said space can be improved.

  Application Example 8 In the electro-optical device according to the application example described above, it is preferable that the thermal conductivity of the exterior case is smaller than the thermal conductivity of the panel case.

The heat conductivity of the outer case is smaller than the heat conductivity of the panel case, and heat is not easily conducted. Therefore, heat generated by the pixels and the drive circuit is not easily transmitted (propagated) to the exterior case (contact surface), and the temperature of the contact surface is not easily increased.
The thermal conductivity of the panel case is larger than the thermal conductivity of the exterior case, and heat is easily conducted. Therefore, the heat generated by the pixels and the drive circuit of the display unit can be efficiently transmitted to the heat radiating unit via the panel case.

  Application Example 9 An electronic apparatus according to this application example includes the electro-optical device described in the application example.

  Application Example 10 An electro-optical device according to this application example is an electro-optical device that can be worn on a human body, and includes a display unit having a pixel and a drive circuit that drives the pixel, and a panel case that houses the display unit. An exterior case that houses the panel case, the exterior case having a first wall and a second wall, the first wall being located on the human body side The panel case is disposed between the first wall and the second wall, and a distance between the first wall and the panel case is determined between the second wall and the panel case. An electro-optical device characterized by being larger than the distance between the two.

  In the electro-optical device described in the application example, the temperature rise of the contact surface is suppressed. Accordingly, when the electro-optical device is applied to the electronic apparatus according to this application example, the temperature increase of the contact surface is suppressed, and for example, discomfort due to the temperature increase can be suppressed. For example, an excellent electronic device can be provided by applying the electro-optical device to a display unit of an electronic device that can be attached to and detached from a human body, such as a head-mounted display, a wearable computer, a wearable phone, or a wearable watch.

FIG. 3 is a diagram illustrating a usage pattern of the virtual image display device according to the first embodiment. 1 is a schematic diagram illustrating a configuration of a virtual image display device according to Embodiment 1. FIG. Schematic which shows the state of the part covered with the exterior case. 1 is a schematic plan view of an image display device (organic electroluminescence display device). The equivalent circuit diagram which shows the electric constitution of an organic electroluminescent display apparatus. FIG. 3 is a schematic diagram illustrating a state where the first image forming apparatus of the virtual image display apparatus according to the first embodiment is provided. FIG. 6 is a schematic diagram illustrating a state on a side where a first image forming apparatus of a virtual image display apparatus according to a second embodiment is provided. The schematic diagram which shows the state by the side by which the 1st image forming apparatus of the virtual image display apparatus which concerns on the modification 1 was provided. FIG. 9 is a schematic diagram illustrating a state of a virtual image display device according to Modification 2 on a side where a first image forming apparatus is provided. FIG. 9 is a schematic diagram illustrating a state of a virtual image display device according to Modification 2 on a side where a first image forming apparatus is provided.

  Embodiments of the present invention will be described below with reference to the drawings. Such an embodiment shows one aspect of the present invention and does not limit the present invention, and can be arbitrarily changed within the scope of the technical idea of the present invention. In each of the following drawings, the scale of each layer or each part is made different from the actual scale so that each layer or each part can be recognized on the drawing.

(Embodiment 1)
"Outline of virtual image display device"
The virtual image display apparatus 100 according to the first embodiment is an example of the “electronic device” in the present invention, and is a head mounted display (HMD) that has an appearance like glasses and is worn on the head of a human body.
FIG. 1 is a diagram showing a usage pattern of the virtual image display device according to the present embodiment. FIG. 2 is a schematic diagram illustrating a configuration of the virtual image display device according to the present embodiment. FIG. 3 is a schematic view (disassembled perspective view) showing a state of a portion covered with the exterior case. In FIG. 3, illustration of the outer case 13 is omitted.
Hereinafter, an overview of the virtual image display device 100 will be described with reference to FIGS. 1 to 3.

  As shown in FIG. 1, the virtual image display device 100 is used while being worn on the head of the wearer M. The virtual image display device 100 has a see-through function, and the wearer M can simultaneously observe a virtual image by the image light of the virtual image display device 100 and an external image (real image) by external light.

As shown in FIG. 2, the virtual image display device 100 includes a first optical panel 111 and a second optical panel 112 that cover the front of the wearer M so that the eye can be seen through, and a first image forming device 10 and a second image forming device. 9 and a housing 121.
The first image forming apparatus 10 and the second image forming apparatus 9 are display devices that can be attached to a human body, and are examples of the “electro-optical device” in the present invention.

  The first optical panel 111 and the second optical panel 112 are arc-shaped members that are curved along the face of the wearer M, and include a light guide and see-through prism portion (light guide member), and see-through light. A transmission part (light transmission member). The first optical panel 111 and the second optical panel 112 are made of a resin material exhibiting high light transmittance in the visible range, and are molded by, for example, injecting and solidifying a thermoplastic resin in a mold. In the first optical panel 111 and the second optical panel 112, the prism portion enables the guide and emission of image light and allows the external light to be seen through, and the light transmission portion has high light transmittance in the visible range.

  The first display device 100A, which is a combination of the first optical panel 111 on the right side in the drawing and the first image forming apparatus 10, forms a virtual image for the left eye and functions alone as a virtual image display apparatus. In addition, the second display device 100B in which the second optical panel 112 on the left side in the drawing and the second image forming device 9 are combined forms a virtual image for the right eye and functions alone as a virtual image display device.

  Note that the second display device 100B is obtained by horizontally inverting the first display device 100A, and the second display device 100B has the same structure (configuration) as the first display device 100A. Similarly, the second image forming apparatus 9 is obtained by inverting the first image forming apparatus 10 left and right, and the second image forming apparatus 9 has the same structure (configuration) as the first image forming apparatus 10. Have.

The housing 121 is an elongated plate-like member bent in a U shape. The housing 121 holds the first optical panel 111 and the second optical panel 112, and the first image forming apparatus 10 and the second image forming apparatus 9. The housing 121 has a frame 121A extending in the left and right direction in the drawing, and a vine portion 121B extending rearward from both left and right ends of the frame 121A.
In the following description, the direction along the frame 121A is defined as the X direction, the direction along the vine portion 121B is defined as the Y direction, and the direction orthogonal to the X direction and the Y direction is defined as the Z direction.
The X direction is an example of the “first direction” in the present invention.

The frame 121A and the vine portion 121B are made of a light material that easily conducts heat. The frame 121A and the vine portion 121B are made of, for example, a light metal material such as aluminum, an aluminum alloy, magnesium, or a magnesium alloy.
The frame 121A holds the optical panels 111 and 112 in a state where they are aligned at predetermined positions. The vine portion 121B holds the image forming apparatuses 9 and 10 in an aligned state. In addition, the vine part 121B may have a hinge structure, and in this case, the vine part 121B can be folded.

  The frame 121A is provided with a protector 108 for protecting the lower sides of the optical panels 111 and 112. The protector 108 is formed with a pad-like nose pad member 108a. The protector 108 is an elongated plate-like member bent in a two-stage crank shape, and is an integral part formed of a metal material or a resin material.

The image forming apparatuses 9 and 10 include an image display device 11, a panel case 90, a projection optical system 12, a lens barrel 51, and an exterior case 13.
Although details will be described later, the image display device 11 is an example of the “display unit” in the present invention, is housed in the panel case 90, and outputs (emits) image light to the projection optical system 12 side.

The projection optical system 12 is held by a lens barrel 51. The projection optical system 12 is a collimating lens that converts the image light output from the image display device 11 into a light beam in a parallel state.
The exterior case 13 is a member (housing) that houses the panel case 90 (image display device 11) and the lens barrel 51 (projection optical system 12). The outer case 13 is made of a material that hardly transmits heat. The exterior case 13 is made of, for example, a resin material such as polyolefin, fluorine resin, acrylic, vinyl chloride, polyester, polystyrene, or ABS resin.

The outer case 13 is disposed so as to cover a part of the temple portion 121B, and is held by the temple portion 121B. The exterior case 13 is configured by fitting an inner surface side component 13A and an outer surface side component 13B. The inner surface side component 13 </ b> A is disposed on the wearer M side and has a surface 13-1 </ b> A that contacts the wearer M.
The surface 13-1A is an example of the “contact surface with respect to the human body” in the present invention.

  With this configuration, the image light emitted from the image forming apparatuses 9 and 10 is guided by the first optical panel 111 and the second optical panel 112 and enters the eye of the wearer M. Furthermore, external light passes through the first optical panel 111 and the second optical panel 112 and enters the eye of the wearer M. As a result, the wearer M can recognize the virtual image by the image light and the external image (real image) by the external light in a superimposed manner.

  As shown in FIG. 3, the image display device 11 includes an organic electroluminescence (hereinafter referred to as organic EL) display device 30 and a flexible substrate (hereinafter referred to as FPC) 75.

The lens barrel 51 has a pair of lower convex portions 51a and upper convex portions 51b. The lens barrel 51 is made of, for example, a resin molded part (a resin material having thermal conductivity) containing a thermal conductive filler. That is, the lens barrel 51 is made of a material that can easily transmit heat, and has thermal conductivity as a whole.
The lens barrel 51 has a mounting portion 52 in the Z direction. The lens barrel 51 is fixed to the temple portion 121 </ b> B via the attachment portion 52. In addition, a heat conductive adhesive 83 is disposed between the attachment portion 52 and the temple portion 121B. Thereby, heat is transmitted (propagated) well from the lens barrel 51 to the temple part 121B and the frame 121A (housing 121).

Similar to the lens barrel 51, the panel case 90 is formed of a resin molded part (resin material having thermal conductivity) containing a thermal conductive filler. That is, the panel case 90 is made of a material that can easily transmit heat, and has thermal conductivity as a whole.
The panel case 90 includes a lower concave portion 90 a corresponding to the lower convex portion 51 a of the lens barrel 51, an upper concave portion 90 b corresponding to the upper convex portion 51 b of the lens barrel 51, and a concave portion 95 that houses the organic EL display device 30. have.

  The organic EL display device 30 is bonded (stored) in the recess 95 of the panel case 90 via a heat conductive adhesive 83. One end of the FPC 75 is connected to the organic EL display device 30. The other end of the FPC 75 is pulled out to the outside (Z (−) direction) of the panel case 90 and is connected to a power supply unit (not shown).

The heat conductive adhesive 83 contains, for example, a heat conductive filler such as silicon oxide or aluminum oxide.
Note that, for the connection between the lens barrel 51 and the temple portion 121 </ b> B and the connection between the panel case 90 and the organic EL display device 30, a heat radiating sheet or heat radiating grease may be used in addition to the heat conductive adhesive 83.

The panel case 90 and the lens barrel 51 holding the organic EL display device 30 are integrated by fitting the lower concave portion 90a and the lower convex portion 51a with the upper concave portion 90b and the upper convex portion 51b, respectively. The panel case 90 and the lens barrel 51 (gap between the fitting portions) are fixed to each other by a heat conductive adhesive (not shown). Thereby, the heat of the organic EL display device 30 is favorably transmitted (propagated) to the temple portion 121B and the frame 121A via the panel case 90 and the lens barrel 51.
The constituent material of the panel case 90 and the lens barrel 51 may be any material that can easily transmit heat and is light, and in addition to the above-described resin material having thermal conductivity, for example, aluminum, aluminum alloy, magnesium, magnesium alloy, etc. A light metal material may be used.

"Outline of organic EL display device"
FIG. 4 is a schematic plan view of an image display device (organic EL display device). FIG. 5 is an equivalent circuit diagram showing an electrical configuration of the organic EL display device. In FIGS. 4 and 5, components necessary for the description are illustrated, and components unnecessary for the description are not illustrated.
Next, an outline of the organic EL display device 30 will be described with reference to FIGS. 4 and 5.

  As shown in FIG. 4, the image display device 11 includes an organic EL display device 30 and an FPC 75. The FPC 75 is connected to an external connection terminal 37 provided at an end of the organic EL display device 30.

  The organic EL display device 30 includes an element substrate 31 and a sealing substrate 32, and both the substrates are bonded by a resin layer (not shown).

The element substrate 31 includes a plurality of pixels P arranged in a matrix in the display region E, a driving circuit (data line driving circuit 35 and scanning line driving circuit 36) for driving the plurality of pixels P, an external connection terminal 37, and the like. Is formed. Specifically, the element substrate 31 is a semiconductor substrate (silicon substrate) on which pixels P, a data line driving circuit 35, a scanning line driving circuit 36, an external connection terminal 37, and the like are formed. That is, the element substrate 31 is composed of a semiconductor substrate (silicon substrate) and has excellent thermal conductivity.
As described above, the image display device 11 (organic EL display device 30) includes the pixels P and the drive circuits (the data line drive circuit 35 and the scanning line drive circuit 36) that drive the pixels P.

  A plurality of external connection terminals 37 are arranged along the first side of the element substrate 31. A data line driving circuit 35 is disposed between the plurality of external connection terminals 37 and the display area E. A scanning line driving circuit 36 is disposed between the second and third sides that are orthogonal to the first side and face each other, and the display area E.

The sealing substrate 32 is smaller than the element substrate 31 and is arranged so that the external connection terminals 37 are exposed. The sealing substrate 32 is a translucent insulating substrate, and a quartz substrate, a glass substrate, a resin substrate, or the like can be used. The sealing substrate 32 serves to protect an organic EL element 45 (see FIG. 5), which will be described later, disposed in the display area E so as not to be damaged, and is provided wider than the display area E. Further, the sealing substrate 32 is a surface on the side that emits image light in the organic EL display device 30.
A protective glass for protecting the organic EL display device 30 may be disposed on the surface of the sealing substrate 32 opposite to the element substrate 31.

  As shown in FIG. 5, the organic EL display device 30 includes a plurality of scanning lines 33 and a plurality of data lines 38 that intersect each other, and a plurality of power supply lines 39 that are parallel to each of the plurality of data lines 38. doing. The scanning line 33 is connected to the scanning line driving circuit 36, and the data line 38 is connected to the data line driving circuit 35. In addition, pixels P are arranged in a matrix corresponding to the intersections of the plurality of scanning lines 33 and the plurality of data lines 38.

  The pixel P includes an organic EL element 45 that is a light emitting element, and a pixel circuit 40 that controls driving (light emission) of the organic EL element 45.

  The organic EL element 45 includes a pixel electrode 46 that functions as an anode, a counter electrode 48 that functions as a cathode, and a light emitting functional layer 47 that includes an organic light emitting layer provided between the pixel electrode 46 and the counter electrode 48. doing. Such an organic EL element 45 can be electrically expressed as a diode, and the light emitting functional layer 47 emits light by a current flowing through the organic EL element 45. Specifically, holes are supplied from the pixel electrode 46 to the light emitting functional layer 47, electrons are supplied from the counter electrode 48 to the light emitting functional layer 47, and the holes and electrons are combined in the light emitting functional layer 47. Emits light.

  The pixel circuit 40 includes a switching transistor 41, a storage capacitor 42, and a driving transistor 43. The two transistors 41 and 43 can be configured using, for example, an n-channel or p-channel transistor.

  The gate of the switching transistor 41 is connected to the scanning line 33. One of the source and drain of the switching transistor 41 is connected to the data line 38. The other of the source and drain of the switching transistor 41 is connected to the gate of the driving transistor 43.

  One of the source and drain of the driving transistor 43 is connected to the pixel electrode 46 of the organic EL element 45. The other of the source and drain of the driving transistor 43 is connected to the power supply line 39. A storage capacitor 42 is connected between the gate of the driving transistor 43 and the power supply line 39.

  When the scanning line 33 is driven and the switching transistor 41 is turned on, the potential based on the image signal supplied from the data line 38 at that time is held in the storage capacitor 42 via the switching transistor 41. The on / off state of the driving transistor 43 is determined according to the potential of the storage capacitor 42, that is, the gate potential of the driving transistor 43. An amount of current corresponding to the gate potential flows from the power supply line 39 through the driving transistor 43 to the light emitting functional layer 47 sandwiched between the pixel electrode 46 and the counter electrode 48. The organic EL element 45 emits light according to the amount of current flowing through the light emitting functional layer 47.

  The scanning line driving circuit 36 supplies a scanning signal for controlling on / off of the switching transistor 41. The data line driving circuit 35 controls a current for the organic EL element 45 to emit light. For this reason, since a larger current flows in the data line driving circuit 35 than in the scanning line driving circuit 36, heat is generated by the current. Further, the organic EL element 45 also generates heat due to the current flowing through the organic EL element 45. Since the data line driving circuit 35 controls the entire current flowing through the plurality of organic EL elements 45, a larger current flows than the current flowing through the single organic EL element 45, and the heat generation amount is higher than that of the single organic EL element 45. Is big.

  The heat generated by the data line driving circuit 35 is transmitted to the organic EL element 45 via the base material (silicon substrate) of the element substrate 31 having excellent thermal conductivity. That is, the organic EL element 45 may be affected by the heat generated by the data line driving circuit 35 in addition to the heat generated by the current flowing through the organic EL element 45, and the temperature of the organic EL element 45 may increase. When the temperature of the light emitting functional layer 47 of the organic EL element 45 rises, the deterioration of the light emitting functional layer 47 of the organic EL element 45 is accelerated, so that the life of the organic EL element 45 may be shortened.

The heat generated by the data line driving circuit 35 and the organic EL element 45 passes through the base material (silicon substrate) of the element substrate 31 having excellent thermal conductivity, the panel case 90, and the lens barrel 51, thereby forming a temple portion. It is transmitted well to 121B and the frame 121A.
By using the temple portion 121B and the frame 121A as a heat radiating portion, the influence of heat generated by the data line driving circuit 35 and the organic EL element 45 can be reduced. That is, the temperature rise of the organic EL element 45 can be suppressed, the deterioration of the organic EL element 45 can be suppressed, and the reliability of the organic EL display device 30 (virtual image display device 100) can be improved.

  The heat generated by the data line driving circuit 35 and the organic EL element 45 passes through the base material (silicon substrate) of the element substrate 31 having excellent thermal conductivity, the panel case 90, and the outer case 13, and then the wearer. M is transmitted to M, and there is a possibility that the wearer M may feel discomfort due to heat. As described above, the outer case 13 is made of a material that hardly transfers heat. That is, the thermal conductivity of the outer case 13 is smaller than the thermal conductivity of the panel case 90, and the outer case 13 is less likely to transfer heat than the panel case 90. Therefore, heat generated by the data line driving circuit 35 and the organic EL element 45 is less likely to be transmitted to the wearer M as compared with the temple portion 121B and the frame 121A.

Furthermore, the present embodiment has an excellent configuration (feature) in which heat generated by the data line driving circuit 35 and the organic EL element 45 is more difficult to be transmitted to the wearer M. With this configuration (feature), it is possible to suppress the influence of heat on the wearer M such that the wearer M feels discomfort due to heat.
Hereinafter, a feature of the present embodiment, in which heat generated by the data line driving circuit 35 and the organic EL element 45 is more difficult to be transmitted to the wearer M, will be described.

“Features of this embodiment”
FIG. 6 is a schematic diagram illustrating a state where the first image forming apparatus is provided. FIG. 6 is a schematic view of the wearer M wearing the virtual image display device 100 as seen from the Z (+) direction, and the relationship between the exterior case 13 and the panel case 90 is illustrated.
As described above, the second image forming apparatus 9 has the same structure (configuration) as the first image forming apparatus 10, and thus the description on the side where the second image forming apparatus 9 is provided is omitted. The features of this embodiment will be described on the side where the first image forming apparatus 10 is provided.

As shown in FIG. 6, the outer case 13 has a wall 13-1 and a wall 13-3 arranged in this order along the X direction. The wall 13-1 has a surface 13-1A that contacts the wearer M. The wall 13-1 is a component of the inner surface side component 13 </ b> A of the outer case 13, and the wall 13-3 is a component of the outer surface side component 13 </ b> B of the outer case 13.
The wall 13-1 is an example of the “first wall” in the present invention. The wall 13-3 is an example of the “second wall” in the present invention. Further, in the following description, the surface 13-1A is referred to as a contact surface 13-1A.

The panel case 90 is disposed between the wall 13-1 and the wall 13-3. The panel case 90 is disposed away from the wall 13-1, and the first space 1 is formed between the wall 13-1 and the panel case 90. The panel case 90 is disposed away from the wall 13-3, and the second space 2 is formed between the wall 13-3 and the panel case 90.
That is, one space (first space 1) is disposed between the contact surface 13-1A and the panel case 90.

  The first space 1 and the second space 2 are filled with air at atmospheric pressure. In other words, atmospheric pressure air is filled between the wall 13-1 and the panel case 90 and between the wall 13-3 and the panel case 90.

  As described above, the heat generated by the data line driving circuit 35 and the organic EL element 45 is transmitted to the panel case 90. It is important that the heat transmitted to the panel case 90 is not easily conducted to the wall 13-1 and the contact surface 13-1A. That is, it is important to reduce the heat conduction from the high temperature part (panel case 90) to the low temperature part (wall 13-1 and contact surface 13-1A).

  The heat transfer from the high temperature part (panel case 90) to the low temperature part (wall 13-1 and contact surface 13-1A) is conducted by heat conduction by the medium, heat conduction by circulation (convection) of the medium, and heat by radiation. It is caused by conduction. Therefore, in order to reduce the movement of heat from the high temperature part (panel case 90) to the low temperature part (wall 13-1 and contact surface 13-1A), heat conduction by the medium, heat by circulation (convection) of the medium. It is important to reduce the conduction of heat and the conduction of heat by radiation.

  In this embodiment, the medium in which heat conduction occurs includes atmospheric pressure air. The value of thermal conductivity of air at atmospheric pressure is 0.026 W / mK at room temperature. The value of the thermal conductivity of the resin constituting the wall 13-1 and the wall 13-3 is approximately 0.2 W / mK to 0.3 W / mK at room temperature. The thermal conductivity of air at atmospheric pressure is extremely small compared to the thermal conductivity of resin. That is, by providing a space (first space 1) between the panel case 90 and the wall 13-1, and filling the space with air at atmospheric pressure (medium having a low thermal conductivity), it depends on the medium. Heat conduction becomes extremely small, and heat transfer from the high temperature part (panel case 90) to the low temperature part (wall 13-1 and contact surface 13-1A) can be reduced.

  The heat of the panel case 90 is transmitted to the wall 13-3 (outer surface side component 13B), and the inner surface side component 13A (wall 13-1 and contact surface 13) via the outer surface side component 13B (wall 13-3). -1A). Since the second space 2 is provided between the panel case 90 and the wall 13-3 and the second space 2 is filled with air at atmospheric pressure (medium having low thermal conductivity), the wall 13 The heat of the panel case 90 is difficult to be transmitted to -3. Therefore, the heat of the panel case 90 is hardly transmitted to the inner surface side component 13A (wall 13-1 and contact surface 13-1A) via the outer surface side component 13B (wall 13-3).

  The distance α between the wall 13-1 and the panel case 90 is larger than the distance β between the wall 13-3 and the panel case 90. In other words, the dimension α in the X direction of the first space 1 is larger than the dimension β in the X direction of the second space 2. Furthermore, the distance α between the wall 13-1 and the panel case 90 is 12 mm or less.

  When the distance α between the wall 13-1 and the panel case 90 is larger than 12 mm, convection (circulation) occurs in the atmospheric air filled in the first space 1, and the convection (circulation) of the air causes the convection (circulation). The heat of the panel case 90 is easily transmitted to the wall 13-1 and the contact surface 13-1A.

In the present embodiment, the distance α between the wall 13-1 and the panel case 90 is 12 mm or less, and convection (circulation) of air at atmospheric pressure is unlikely to occur. Therefore, heat conduction due to circulation (convection) of the medium is prevented. The heat transfer from the high temperature part (panel case 90) to the low temperature part (wall 13-1 and contact surface 13-1A) can be reduced.
Therefore, the distance α between the wall 13-1 and the panel case 90 is preferably 12 mm or less.

  The conduction of heat by radiation is inversely proportional to the square of the distance between the high temperature part (panel case 90) and the low temperature part (with the wall 13-1 and the contact surface 13-1A). That is, when the distance between the high temperature part and the low temperature part increases, the influence of heat conduction by radiation decreases, and when the distance between the high temperature part and the low temperature part decreases, the influence of heat conduction by radiation increases. In the present embodiment, since the distance α between the wall 13-1 and the panel case 90 is larger than the distance β between the wall 13-3 and the panel case 90, the distance α is smaller than the distance β. In comparison, the influence of heat conduction due to radiation can be reduced.

  Note that the heat transfer from the high temperature part (panel case 90) to the low temperature part (with the wall 13-1 and the contact surface 13-1A) has the greatest influence of heat conduction by the medium. Therefore, a space (first space 1) is provided between the high temperature part (panel case 90) and the low temperature part (with the wall 13-1 and the contact surface 13-1A), and the thermal conductivity is small in the space. It is most important to fill the medium (atmospheric pressure air) and reduce the effect of heat conduction by the medium. That is, in order to suppress the movement of heat from the high temperature part (panel case 90) to the low temperature part (with the wall 13-1 and the contact surface 13-1A), the high temperature part (panel case 90) and the low temperature part (wall 13-). 1 and the contact surface 13-1A), a significant effect (heat insulation effect) can be obtained.

  As described above, according to the present embodiment, the heat conduction from the high temperature part (panel case 90) to the low temperature part (with the wall 13-1 and the contact surface 13-1A) is further reduced due to the following characteristics. The influence of heat on the can be further suppressed. That is, when worn on the head and used, it is possible to suppress discomfort due to temperature rise, and comfort can be ensured without impairing the wearing feeling. Note that the feeling of wearing varies from person to person, and some people do not feel uncomfortable even if the temperature rises during wearing, but there is little temperature transmission to the temporal region, in other words, the temperature change during use The problem is recognized from the viewpoint that less is more preferable.

  1) A material in which a space (first space 1) is provided between the high temperature portion (panel case 90) and the low temperature portion (wall 13-1 and contact surface 13-1A), and the heat conductivity is small in the space. By filling (air at atmospheric pressure), heat conduction by the medium can be reduced with respect to the wall 13-1 and the contact surface 13-1A.

  2) The distance α between the wall 13-1 and the panel case 90 is set to 12 mm or less, and the convection of the air filled in the first space 1 is made difficult to occur, so that the wall 13-1 and the contact surface 13-1A are formed. On the other hand, the conduction of heat due to the circulation (convection) of the medium can be reduced.

  3) By making the distance α between the wall 13-1 and the panel case 90 larger than the distance β between the wall 13-3 and the panel case 90, the wall 13-1 and the contact surface 13-1A On the other hand, heat conduction by radiation can be reduced.

  4) The heat conduction by the medium, the heat conduction by the circulation (convection) of the medium, and the heat conduction by the radiation are reduced, so that the low temperature part (wall 13-1 and contact surface 13) from the high temperature part (panel case 90). -1A) can be reduced in heat transfer to the contact surface 13-1A.

(Embodiment 2)
"Outline of virtual image display device"
FIG. 7 is a diagram corresponding to FIG. 6, and is a schematic diagram illustrating a state on the side where the first image forming apparatus of the virtual image display apparatus according to the second embodiment is provided. FIG. 7 also shows the state of the end portion of the outer case 13 on the Y direction side.

In the virtual image display device according to the present embodiment, the first image forming apparatus 10 has a wall 13-2 between the wall 13-1 and the panel case 90. This is the difference between the virtual image display device according to the present embodiment and the virtual image display device 100 according to the first embodiment. Other configurations are the same in the virtual image display device according to the present embodiment and the virtual image display device 100 according to the first embodiment.
Hereinafter, with reference to FIG. 7, the virtual image display device according to the present embodiment will be described focusing on differences from the virtual image display device 100 according to the first embodiment. Moreover, about the same component as Embodiment 1, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

As shown in FIG. 7, in the exterior case 13, a wall 13-1, a wall 13-2, and a wall 13-3 are arranged in this order from the portion in contact with the wearer M along the X direction. A wall 13-4 is arranged at the end of the wall 13-1 and the wall 13-2 on the Y direction side. A wall 13-5 is arranged at the end of the wall 13-3 on the Y direction side.
The wall 13-1 is an example of the “first wall” in the present invention, the wall 13-2 is an example of the “third wall” in the present invention, and the wall 13-3 is the “first wall” in the present invention. It is an example of “two walls”.

  The wall 13-1, the wall 13-2, and the wall 13-4 are components of the inner surface side component 13A of the exterior case 13. The wall 13-3 and the wall 13-5 are components of the outer surface side component 13B of the exterior case 13.

The panel case 90 is disposed between the wall 13-2 and the wall 13-3. The panel case 90 is disposed away from the wall 13-2, and the first space 1 is formed between the wall 13-2 and the panel case 90. The panel case 90 is disposed away from the wall 13-3, and the second space 2 is formed between the wall 13-3 and the panel case 90. Further, a third space 3 is formed between the wall 13-1 and the wall 13-2.
That is, two spaces (first space 1 and third space 3) are arranged between the contact surface 13-1A and the panel case 90.

  The wall 13-4 and the wall 13-5 are disposed along the X direction, and a surface along the X direction facing the panel case 90 is formed by the wall 13-4 and the wall 13-5. A fourth space 4 is formed between the wall 13-4 and the wall 13-5 and the panel case 90.

  The sum of the distance α1 between the wall 13-1 and the wall 13-2 and the distance α2 between the wall 13-2 and the panel case 90 is based on the distance β between the wall 13-3 and the panel case 90. Is also big. In other words, the sum of the dimension α1 of the third space 3 in the X direction and the dimension α2 of the first space 1 in the X direction is larger than the dimension β of the second space 2 in the X direction.

  Further, the distance γ between the wall 13-4 and the wall 13-5 and the panel case 90 is larger than the distance β between the wall 13-3 and the panel case 90. In other words, the dimension γ in the Y direction of the fourth space 4 is larger than the dimension β in the X direction of the second space 2.

In the present embodiment, two spaces of the first space 1 and the third space 3 are arranged between the contact surface 13-1A and the panel case 90.
An image display device 11 is arranged in the first space 1, the second space 2, and the fourth space 4. In a portion where the image display device 11 is arranged, a space (first space 1) in which the image display device 11 is arranged by a fitting portion between the inner surface side component 13A and the outer surface side component 13B, a drawer portion of the FPC 75, and the like. It is difficult to improve the airtightness of the second space 2 and the fourth space 4).
For this reason, the first space 1, the second space 2, and the fourth space 4 are filled with air at atmospheric pressure. In other words, there is an atmospheric pressure between the wall 13-2 and the panel case 90, between the wall 13-3 and the panel case 90, and between the wall 13-4 and the wall 13-5 and the panel case 90. Is filled with air.

  The third space 3 is a space surrounded by the wall 13-1, the wall 13-2, the wall 13-4, and the like, and the image display device 11 is not disposed therein. Since the third space 3 is not provided with a fitting portion or a drawer portion of the FPC 75, the airtightness of the third space 3 can be enhanced. As a result, the third space 3 is filled with decompressed air.

  Since the thermal conductivity of the decompressed air is smaller than the thermal conductivity of air at atmospheric pressure, it is provided between the high temperature part (panel case 90) and the low temperature part (wall 13-1 and contact surface 13-1A). By filling the reduced space (third space 3) with reduced-pressure air, the heat conduction by the medium is further reduced as compared with the first embodiment, and the high-temperature portion (panel case 90) is changed to the low-temperature portion (wall 13-). 1 and the heat transfer to the contact surface 13-1A) can be further reduced.

  The sum of the distance α1 between the wall 13-1 and the wall 13-2 and the distance α2 between the wall 13-2 and the panel case 90 is based on the distance β between the wall 13-3 and the panel case 90. Therefore, heat conduction by radiation can be reduced as compared with the case where the sum of the distance α1 and the distance α2 is smaller than the distance β.

  For example, the heat of the panel case 90 is transmitted to the wall 13-1 and the contact surface 13-1A via the wall 13-4 and the wall 13-5. Since the fourth space 4 is provided between the panel case 90 and the walls 13-4 and 13-5, the heat of the panel case 90 is also transmitted to the walls 13-4 and 13-5. Hateful.

  Furthermore, since the distance γ between the panel case 90 and the wall 13-4 and the wall 13-5 is larger than the distance β between the panel case 90 and the wall 13-3, the distance γ is smaller than the distance β. Compared to the case, the influence of heat conduction by radiation is reduced, and the heat of the panel case 90 is not easily conducted to the wall 13-4 and the wall 13-5.

  Thus, in this embodiment, the space (third space 3) filled with the decompressed air between the high temperature portion (panel case 90) and the low temperature portion (wall 13-1 and contact surface 13-1A). ), The movement of heat from the high temperature part (panel case 90) to the low temperature part (wall 13-1 and contact surface 13-1A) is further reduced compared to the first embodiment, and the influence of heat on the human body is reduced. Further suppression can be achieved.

  The present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit or idea of the invention that can be read from the claims and the entire specification. Electronic equipment equipped with the electro-optical device is also included in the technical scope of the present invention. Various modifications other than the above embodiment are conceivable. Hereinafter, a modification will be described.

(Modification 1)
FIG. 8 is a diagram corresponding to FIG. 7, and is a schematic diagram illustrating a state on the side where the first image forming apparatus of the virtual image display apparatus according to Modification 1 is provided.
As shown in FIG. 8, the third space 3 is formed in a member 14 in which the wall 13-1, the wall 13-2, and the wall 13-4 in the second embodiment are integrated. The member 14 is a component of the inner surface side component 13A.

  By forming the third space 3 in the integrated member 14, the airtightness of the third space 3 can be improved. That is, by improving the airtightness of the member 14 forming the third space 3, the pressure change of the decompressed air filled in the third space 3 is suppressed, and the excellent heat insulating property of the third space 3 is achieved. Can be maintained.

(Modification 2)
FIG. 9 corresponds to FIG. FIG. 10 is a diagram corresponding to FIG. That is, FIG. 9 and FIG. 10 are schematic diagrams illustrating a state of the virtual image display device according to Modification 2 on the side where the first image forming device 10 is provided.

  As shown in FIG. 9, the wall 13-3 is in contact with the panel case 90. As shown in FIG. 10, the wall 13-3 is in contact with the panel case 90. That is, the distance β (see FIGS. 6 and 7) between the wall 13-3 and the panel case 90 may be 0 mm.

For example, in FIG. 10, the heat of the panel case 90 is transferred to the wall 13-1 and the contact surface 13-1A by conduction of heat through the wall 13-3, the wall 13-5, and the wall 13-4. . Furthermore, the wall 13-3, the wall 13-5, and the wall 13-4 are made of a material that is difficult to transmit heat. That is, a medium (wall 13-4, wall 13-5) made of a material that does not easily transfer heat is disposed between the wall 13-3 and the wall 13-1, and the path (dimensions) of the medium that transfers heat. Therefore, even if the wall 13-3 is in contact with the panel case 90, the heat of the panel case 90 is transferred to the wall 13-1 and the contact surface 13 by the heat conduction of the wall 13-5 and the wall 13-4. It is difficult to transmit to -1A.
Therefore, the distance β between the wall 13-3 and the panel case 90 is preferably 0 mm or more. Furthermore, when the distance β between the wall 13-3 and the panel case 90 is 0 mm, the outer case 13 is compared with the case where the distance β between the wall 13-3 and the panel case 90 is larger than 0 mm. The dimension in the X direction can be reduced and the outer case 13 can be made thinner.

  Furthermore, the wall 13-3 can be used as a heat radiating part by configuring the material of the wall 13-3 with the same material that can easily transmit heat as the panel case 90.

(Modification 3)
In the first embodiment, one space (first space 1) is disposed between the contact surface 13-1A and the panel case 90 (see FIG. 6). In the second embodiment, two spaces (first space 1 and third space 3) are arranged between the contact surface 13-1A and the panel case 90 (see FIG. 7). The number of spaces arranged between the contact surface 13-1A and the panel case 90 may be more than two. In other words, at least one space may be disposed between the contact surface 13-1A and the panel case 90.

(Modification 4)
The space in which the image display device 11 is arranged is filled with atmospheric pressure air because it is difficult to improve the airtightness by the fitting portion of the inner surface side component 13A and the outer surface side component 13B, the drawer portion of the FPC 75, and the like. It was. In other words, in the first embodiment, the space (the first space 1 and the second space 2) in which the image display device 11 is arranged is filled with air at atmospheric pressure. In the second embodiment, the air in which the image display device 11 is disposed (the first space 1, the second space 2, and the fourth space 4) is filled with atmospheric pressure air.

The fitting portion of the inner surface side component 13A and the outer surface side component 13B, the drawer portion of the FPC 75, and the like are hermetically sealed with, for example, a sealing material, and the space where the image display device 11 is disposed is filled with decompressed air. It may be a configuration.
Further, the third space 3 of the second embodiment may be filled with air at atmospheric pressure.
That is, in the first embodiment, the first space 1 and the second space 2 only need to be filled with either atmospheric pressure air or decompressed air. In the second embodiment, if the first space 1, the second space 2, the third space 3, and the fourth space 4 are filled with either atmospheric pressure air or decompressed air. Good.

(Modification 5)
As described above, in the image forming apparatuses 9 and 10, the temperature rise of the contact surface 13-1A is suppressed. Therefore, in the electronic apparatus to which the image forming apparatuses 9 and 10 are applied, the temperature rise of the contact surface is suppressed, and for example, discomfort due to the temperature rise can be suppressed.
Furthermore, the electronic apparatus to which the image forming apparatuses 9 and 10 are applied is not limited to the virtual image display apparatus 100 (head mounted display). For example, the image forming apparatuses 9 and 10 can be applied to a display unit of an electronic device that can be attached to and detached from a human body, such as a wearable computer, a wearable phone, and a wearable watch.

(Modification 6)
This will be described with reference to FIG.
In the said embodiment and the modification, although demonstrated as what the wall 13-1 by the side of a human body (wearing person) contacts a temporal region, it is not limited to this structure and the wall 13-1 is a temporal region. It may be separated from the part. In other words, it is good also as a structure with a clearance gap between the wall 13-1 located in a wearer side, and a temporal region. For example, in FIG. 2, the box-shaped first image forming apparatus 10 is configured to protrude to the inside of the frame 121, but may be configured to protrude to the outside of the frame 121. The same applies to the second image forming apparatus 9.
Even in this configuration, the virtual image display device 100 is mounted on the head by the nose pad member 108a that is applied to the wearer's nose and the temple portion 121B that is applied to the ear, similarly to the glasses. There is no hindrance. Furthermore, since a gap is formed between the image forming apparatuses 9 and 10 that are heat generating portions and the temporal portion, and this gap functions as a heat insulating space (heat insulating portion), more heat is transmitted to the temporal portion. Can be reduced.

  DESCRIPTION OF SYMBOLS 1 ... 1st space, 2 ... 2nd space, 3 ... 3rd space, 9 ... 2nd image forming apparatus, 10 ... 1st image forming apparatus, 11 ... Image display apparatus, 12 ... Projection optical system , 13 ... exterior case, 13A ... inner surface side component, 13B ... outer surface side component, 13-1 ... wall, 13-2 ... wall, 13-3 ... wall, 13-4 ... wall, 13-4 ... wall, 13- DESCRIPTION OF SYMBOLS 5 ... Wall, 13-1A ... Contact surface, 30 ... Organic EL display device, 31 ... Element substrate, 32 ... Sealing substrate, 33 ... Scan line, 35 ... Data line drive circuit, 36 ... Scan line drive circuit, 37 ... External connection terminals, 38 ... data lines, 39 ... power supply lines, 40 ... pixel circuits, 41 ... switching transistors, 42 ... storage capacitors, 43 ... driving transistors, 45 ... organic EL elements, 46 ... pixel electrodes, 47 ... Light emitting functional layer, 48 ... counter electrode, 75 ... FPC, 90 ... panel case, DESCRIPTION OF SYMBOLS 0a ... Lower side recessed part, 90b ... Upper side recessed part, 95 ... Recessed part, 100 ... Virtual image display apparatus, 100A ... 1st display apparatus, 100B ... 2nd display apparatus, 108 ... Protector, 108a ... Nose pad member, 111 ... 1st optical Panel, 112 ... second optical panel, 121 ... housing, 121A ... frame, 121B ... vine, M ... wearer, E ... display area, P ... pixel.

Claims (4)

An electro-optical device that can be attached to a human body,
A display unit having a pixel and a driving circuit for driving the pixel;
A panel case for storing the display unit;
An exterior case that houses the panel case,
The exterior case has a first wall, a third wall, and a second wall,
The first wall has a contact surface for the human body,
The panel case is disposed between the second wall and the third wall;
The sum of the distance between the first wall and the third wall and the distance between the third wall and the panel case is based on the distance between the second wall and the panel case. An electro-optical device characterized by being large. Between the first wall and the third wall, between the third wall and the panel case, and between the second wall and the panel case, atmospheric air or reduced pressure is used. The electro-optical device according to claim 1 , wherein any of the air is filled.   The electro-optical device according to claim 1, wherein a thermal conductivity of the outer case is smaller than a thermal conductivity of the panel case.   An electronic apparatus comprising the electro-optical device according to claim 1.

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