JP4149780B2 - Liquid crystal display unit and terminal device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a display unit that is attached to a main body having a key input device via a hinge mechanism, and the hinge mechanism includes a first arm and a second arm that are rotatable with respect to an axis. The present invention relates to a liquid crystal display unit in which an arm is attached to the main body and a second arm is attached to a side surface of a display surface of the liquid crystal display unit, and a terminal device provided with the liquid crystal display unit.
[0002]
[Prior art]
First, the configuration of the liquid crystal display unit will be described with reference to FIG. FIG. 5 is an exploded perspective view of the liquid crystal display unit. In the figure, the following components are stacked on the inner bottom surface of the internal chassis 1 having a box shape with an open top surface and a liquid crystal panel driving circuit provided on the inner bottom surface. A backlight 3 is provided on the inner bottom surface of the inner chassis 1 along the side surface in the longitudinal direction. A light guide plate 5 is provided on one side of the backlight 3. Light incident from the light incident surface 5a of the light guide plate 5 is emitted from the light emitting surface 5b with a substantially uniform intensity. On the other side of the backlight 3, there is provided a mirror 7 that surrounds the backlight 3 in a substantially U shape and reflects light emitted from the backlight 3 toward the light incident surface 5 a of the light guide plate 5.
[0003]
On the light emitting surface 5b of the light guide plate 5, a light collecting sheet 9 for condensing light emitted from the light guide plate 5 at a predetermined angle and a diffusion sheet 11 for diffusing at a predetermined viewing angle are laminated. A liquid crystal panel 13 is laminated on the diffusion sheet 11.
[0004]
On the liquid crystal panel 13, a box shape with an open bottom surface is fitted into the internal chassis 1, and cooperates with the internal chassis 1 to laminate the light guide plate 5, the light collecting sheet 9, and the diffusion sheet 11. A frame-like bezel 15 that holds the liquid crystal panel 13 and covers only the periphery of the display surface 13a of the liquid crystal panel 13 is disposed on the upper surface. The liquid crystal display unit 17 has such a configuration.
[0005]
An example of the mounting structure of the liquid crystal display unit 17 will be described with reference to FIG. In the figure, a bracket 21 provided with a screw mounting hole 20 is formed in the bezel 15 of the liquid crystal display unit 17, and a cover that covers the liquid crystal display unit 17 using screws 23 perpendicular to the display surface 13 a of the liquid crystal panel 13. 24 is attached. However, in such a mounting structure, since the bracket 21 is on a surface substantially parallel to the display surface 13a of the liquid crystal panel 13, there is a problem that it is difficult to reduce the size.
[0006]
Therefore, an attachment structure as shown in FIG. 7 has been proposed.
[0007]
A hole 24a is formed on the side surface of the cover 24 that covers the liquid crystal display unit 17, and a hole 15a that faces the hole 24a of the cover 24 is formed in the bezel 15 of the liquid crystal display unit 17, and is attached using screws 22 (for example, Patent Document 1).
[0008]
According to such a configuration, since the screw mounting hole 15a is formed on the side surface of the liquid crystal display unit 17, the size can be reduced as compared with the configuration shown in FIG.
[0009]
[Patent Document 1]
JP-A-10-282899 (page 5, FIG. 5)
[0010]
[Problems to be solved by the invention]
However, there is a case where the mounting structure shown in FIG. 8 is adopted in the configuration in which the screw mounting hole 15a is formed on the side surface of the liquid crystal display unit 17.
[0011]
In the figure, reference numeral 25 denotes a main body having an input unit such as a keyboard. The first arm 27 of the hinge mechanism 31 having the first arm 27 and the second arm 29 that can rotate with respect to the shaft is fixed to the main body 25. The second arm 29 of the hinge mechanism 31 is attached to the side surface of the bezel 15 of the liquid crystal display unit 17 using a screw 33.
[0012]
In the case of such a mounting structure, the hinge mechanism 31 is made of a conductive material, and the liquid crystal display unit 17 is grounded via the hinge mechanism 31.
[0013]
However, there are cases where electrical contact between the bezel 15 of the liquid crystal display unit 17 and the second arm 29 of the hinge mechanism 31 can be obtained only in the vicinity of the screw 33, and there is a problem that the grounding property is not good.
[0014]
Further, if the grounding property is not good, the electromagnetic wave noise emitted from the liquid crystal display unit 17 becomes large, and other parts or the like for reducing the leaked electromagnetic wave are required, resulting in a problem that the cost increases.
[0015]
The present invention has been made in view of the above problems, and an object of the present invention is to provide a liquid crystal display unit and a terminal device in which the grounding property of the liquid crystal display unit is improved and the cost can be reduced.
[0016]
[Means for Solving the Problems]
The invention according to claim 1, which solves the above-described problem, is a display unit that is attached to a main body having a key input device via a hinge mechanism, and the hinge mechanism includes a first arm that is rotatable with respect to a shaft, In a liquid crystal display unit having two arms, the first arm is attached to the main body, and the second arm is attached to a side surface of the display surface of the liquid crystal display unit. The second arm is a longitudinal length of the side surface of the liquid crystal display unit. The hinge mechanism, the side surface is made of a conductive material, and the side surface is electrically connected to a ground line in the liquid crystal display unit, and the side surface is extended to the entire longitudinal direction of the side surface. And forming a conductive holding portion for sandwiching the second arm, forming a through hole in the holding portion, and attaching the second arm using a screw that engages with the through hole. A liquid crystal display unit according to symptoms.
[0017]
According to a third aspect of the present invention, there is provided a hinge mechanism having a first arm and a second arm rotatable with respect to a shaft, a main body having an input portion to which the first arm of the hinge mechanism is attached, A liquid crystal display unit in which a second arm of the hinge mechanism is attached to a side surface of the display surface. The second arm is opposed to the entire longitudinal direction of the side surface of the liquid crystal display unit, and the hinge mechanism and the liquid crystal The side surface of the display unit is made of a conductive material, and the side surface is electrically connected to a ground line in the liquid crystal display unit, and cooperates with the side surface in the entire longitudinal direction of the side surface of the liquid crystal display unit. A terminal having a conductive pinching portion sandwiching the second arm, a through hole formed in the pinching portion, and the second arm being attached using a screw engaging with the through hole. In the equipment That.
[0018]
The hinge mechanism, the side surface is made of a conductive material, and the side surface is electrically connected to the ground line in the liquid crystal display unit, whereby the ground line in the liquid crystal display unit → the side surface → the ground line of the hinge mechanism Is formed.
[0019]
In addition, by forming a conductive clamping portion that cooperates with the side surface and sandwiches the second arm on the side surface, the electrical contact portion between the liquid crystal display unit and the hinge mechanism has conventionally been a liquid crystal display unit. In the present invention, in addition to the contact portion between the side surface of the liquid crystal display unit and the second arm, the contact portion between the holding portion of the liquid crystal display unit and the second arm is compared with the contact portion between the side surface of the liquid crystal display unit and the second arm. Will add to the contact area.
[0020]
Therefore, the grounding property of the liquid crystal display unit is improved and the cost can be reduced.
[0021]
Mounting is easy because a through hole is formed in the clamping portion and the second arm is mounted using a screw that engages with the through hole.
[0024]
The second arm is longitudinal direction MukaiAkira region facing side of the liquid crystal display unit, the clamping unit, by being formed in the longitudinal direction MukaiAkira region of the side of the liquid crystal display unit and a hinge mechanism The maximum electrical contact area can be secured, the grounding property of the liquid crystal display unit is improved, and the cost can be reduced.
[0025]
According to a second aspect of the present invention, a through hole having a diameter larger than the outer diameter of the neck portion of the screw is formed in the clamping portion, and the female screw hole is opposed to the through hole and screwed into the second arm. is a liquid crystal display unit according to claim 1 Symbol mounting, characterized in that the formation of the.
According to a fourth aspect of the present invention, there is provided a female screw hole in which a through hole having a diameter larger than the outer diameter of the neck portion of the screw is formed in the clamping portion, the second arm is opposed to the through hole, and the screw is screwed together. The terminal device according to claim 3, wherein the terminal device is formed.
[0026]
When a screw hole is formed on the side surface of the liquid crystal display unit, a space must be provided near the screw hole in the liquid crystal display unit in consideration of damage to the components in the liquid crystal display unit due to the screw that is screwed together. .
[0027]
In the present invention, a through hole having a diameter larger than the outer diameter of the neck portion of the screw is formed in the clamping portion, and a female screw hole is formed in the second arm so as to face the through hole and to which the screw is screwed. Accordingly, a screw hole or the like is not necessary on the side surface of the liquid crystal display unit, and a space in consideration of damage due to the screw is not required in the liquid crystal display unit, so that the liquid crystal display unit can be reduced in size .
[0028]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
[0029]
First, the liquid crystal display unit of this embodiment will be described with reference to FIG. FIG. 2 is an exploded perspective view of the liquid crystal display unit of the present embodiment. In the figure, the following components are laminated on the inner bottom surface of the internal chassis 101 having a box shape with an open top surface and a liquid crystal panel drive circuit and the like provided on the inner bottom surface. A backlight 103 is provided on the inner bottom surface of the inner chassis 101 along the side surface in the longitudinal direction. A light guide plate 105 is provided on one side of the backlight 103. Light incident from the light incident surface 105a of the light guide plate 105 is emitted from the light emitting surface 105b with a substantially uniform intensity. On the other side of the backlight 103, a mirror 107 is provided that surrounds the backlight 103 in a substantially U shape and reflects light emitted from the backlight 103 toward the light incident surface 105a of the light guide plate 105.
[0030]
On the light emitting surface 105b of the light guide plate 105, a light collecting sheet 109 that collects light emitted from the light guide plate 105 at a predetermined angle and a diffusion sheet 111 that diffuses the light at a predetermined viewing angle are stacked. A liquid crystal panel 113 is laminated on the diffusion sheet 111.
[0031]
Then, on the liquid crystal panel 113, a box shape with an open bottom surface is fitted into the internal chassis 101, and cooperates with the internal chassis 101 to be laminated, the light guide plate 105, the light collecting sheet 109, and the diffusion sheet 111. A frame-shaped bezel 115 that holds the liquid crystal panel 113 and covers only the periphery of the display surface 113a of the liquid crystal panel 113 is disposed on the upper surface. The liquid crystal display unit 117 has such a configuration.
[0032]
The bezel 115 is made of a conductive material, and is further electrically connected to a ground line in the liquid crystal display unit 117.
[0033]
Next, the liquid crystal display unit of this embodiment and a terminal device using the same will be described with reference to FIG. FIG. 1 is an exploded perspective view of a terminal device using the liquid crystal display unit shown in FIG.
[0034]
In the figure, reference numeral 125 denotes a main body having an input unit such as a keyboard. The first arm 127 of the two hinge mechanisms 131 having the first arm 127 and the second arm 129 that can rotate with respect to the shaft is fixed to the main body 125. In the present embodiment, the hinge mechanism 131 is made of a conductive material, and the first arm 127 is electrically connected to the ground line of the main body 125.
[0035]
A conductive holding portion 151 is formed on the two side surfaces 115a of the bezel 115 of the liquid crystal display unit 117 so as to cooperate with the side surface 115a and sandwich the second arm 129 of the hinge mechanism 131.
[0036]
In the present embodiment, the second arm 129 of the hinge mechanism 131 is set to a length facing the longitudinal direction MukaiAkira region side 115a of the bezel (liquid crystal display unit 117). Further, clamping portion 151 formed in the bezel 115 is formed in the longitudinal direction MukaiAkira region side 115a of the bezel 115. Further, the distance between the side surface 115a of the bezel 115 and the inner surface of the sandwiching portion 151 is set to be slightly smaller than the thickness of the second arm 129 of the hinge mechanism 131, and the second arm 129 is disposed on the side surface 115a of the bezel 115 and the inner surface of the sandwiching portion 151. The holding portion 151 presses the second arm 129 by press-fitting into the gap.
[0037]
Here, a structure for attaching the hinge mechanism 131 of the liquid crystal display unit 117 to the second arm 129 will be described with reference to FIGS. 1 and 3. FIG. 3 is a cross-sectional view along the axis of the screw when FIG. 1 is assembled.
[0038]
Two through holes 161 are formed in each clamping portion 151 of the bezel 115, and a female screw hole 163 facing the through hole 161 of the clamping portion 151 is formed in the second arm 129 of each hinge mechanism 131.
[0039]
The liquid crystal display unit 117 is inserted into the through hole 161 of the holding portion 151 of the liquid crystal display unit 117 and is screwed into the female screw hole 163 of the second arm 129 of the hinge mechanism 131, so that the liquid crystal display unit 117 is connected to the second of the hinge mechanism 131. It is attached to the arm 129.
[0040]
In addition, the through-hole 161 of the clamping part 151 set the outer diameter of the neck part of the screw 165 to a large diameter.
[0041]
According to such a configuration, the following effects can be obtained.
(1) The hinge mechanism 131 and the bezel 115 are made of a conductive material, and the side surface 115a of the bezel 115 is electrically connected to the ground line in the liquid crystal display unit 117, whereby the ground line in the liquid crystal display unit 117 → A ground line of the side surface 115a of the bezel 115 → the hinge mechanism 131 is formed.
[0042]
Then, the conductive holding portion 151 that sandwiches the second arm 129 of the hinge mechanism 131 is formed on the side surface 115a of the bezel 115 in cooperation with the side surface 115a, so that the electrical connection between the liquid crystal display unit and the hinge mechanism has been conventionally achieved. Compared to the case where the only contact portion is the contact portion between the side surface of the liquid crystal display unit and the second arm of the hinge mechanism, in this embodiment, the side surface 115a of the bezel (liquid crystal display unit 117) 115 and the hinge mechanism 131 are connected. In addition to the contact portion with the second arm 129, the contact portion between the sandwiching portion 151 of the bezel (liquid crystal display unit 117) 115 and the second arm 129 of the hinge mechanism 131 is added, so the contact area is greatly increased.
[0043]
Therefore, the grounding property of the liquid crystal display unit is improved and the cost can be reduced.
(2) Since the through-hole 161 is formed in the clamping part 151 and the second arm 129 of the hinge mechanism 131 is attached using the screw 165 inserted through the through-hole 161, the attachment is easy.
(3) The second arm 129 of the hinge mechanism 131 is set to a length that opposes substantially the entire longitudinal direction of the side surface 115a of the bezel (liquid crystal display unit 117). In addition, the sandwiching portion 151 formed on the bezel 115 is formed in substantially the entire longitudinal direction of the side surface 115 a of the bezel 115. Therefore, the maximum electrical contact portion between the liquid crystal display unit 117 and the hinge mechanism 131 can be secured, the grounding property of the liquid crystal display unit 117 is improved, and the cost can be reduced.
(4) When a screw hole is formed in the side surface 115a of the bezel (liquid crystal display unit 117) 115, the liquid crystal display unit 117 has an internal structure in consideration of damage to parts in the liquid crystal display unit 117 due to the screw that is screwed together. A space must be provided near the screw hole.
[0044]
In the present embodiment, a through hole 161 having a diameter larger than the outer diameter of the neck portion of the screw 165 is formed in the sandwiching portion 151, and a female screw hole that faces the through hole 161 and is screwed into the second arm 129. By forming 163, a screw hole or the like is not necessary on the side surface of the liquid crystal display unit 117, and a space in consideration of damage due to screws is not required in the liquid crystal display unit 117, so that the liquid crystal display unit 117 can be downsized.
[0045]
The present invention is not limited to the above embodiment. As a structure for attaching the hinge mechanism 131 of the liquid crystal display unit 117 to the second arm 129, a configuration as shown in FIG.
[0046]
As shown in the figure, in this example, a female screw hole 171 into which the screw 165 is screwed is formed in the holding portion 151, the second arm 129 is opposed to the female screw hole 171, and the diameter is larger than the outer diameter of the neck portion of the screw 165. Hole 173 is formed.
[0047]
The distal end side of the screw 165 is engaged with the hole 173 of the second arm 129.
[0048]
Even if it is such a structure, the effect similar to the said embodiment can be acquired.
[0049]
(Additional remark 1) It is a display unit attached to the main body which has a key input device through a hinge mechanism, Comprising: The said hinge mechanism has the 1st arm and 2nd arm which can rotate with respect to an axis | shaft, The said 1st In the liquid crystal display unit in which the arm is attached to the main body, and the second arm is attached to the side surface of the display surface of the liquid crystal display unit,
The hinge mechanism, the side surface is made of a conductive material, the side surface is electrically connected to a ground line in the liquid crystal display unit, and
On the side surface, a conductive pinching portion that sandwiches the second arm in cooperation with the side surface is formed,
Forming a through hole in該挟lifting unit, a liquid crystal display unit characterized in that attaching the second arm by means of screws which engage the through hole.
[0050]
(Supplementary Note 2) The second arm opposite to the longitudinal direction MukaiAkira area side of said liquid crystal display unit,
The clamping unit, a liquid crystal display unit according to Supplementary Note 1, wherein the formed in longitudinal direction MukaiAkira area of the side.
[0051]
(Supplementary Note 3) A through hole having a diameter larger than the outer diameter of the neck of the screw is formed in the clamping portion,
3. The liquid crystal display unit according to claim 1, wherein a female screw hole is formed in the second arm so as to face the through hole and to which the screw is screwed.
[0052]
(Supplementary Note 4) A hinge mechanism having a first arm and a second arm rotatable with respect to an axis;
A main body to which the first arm of the hinge mechanism is attached and having an input unit;
A liquid crystal display unit in which a second arm of the hinge mechanism is attached to a side surface of the display surface;
In a terminal device having
The hinge mechanism, the side surface of the liquid crystal display unit is made of a conductive material, and the side surface is electrically connected to a ground line in the liquid crystal display unit,
On the side surface of the liquid crystal display unit, a conductive pinching portion that cooperates with the side surface to sandwich the second arm is formed,
A terminal device, wherein a through hole is formed in the clamping portion, and the second arm is attached using a screw that engages with the through hole.
[0053]
(Supplementary Note 5) the second arm opposite to the longitudinal direction MukaiAkira area side of said liquid crystal display unit,
The clamping unit, the terminal apparatus according to Supplementary Note 4, wherein the formed in longitudinal direction MukaiAkira area of the side.
[0054]
(Appendix 6) A through hole having a diameter larger than the outer diameter of the neck of the screw is formed in the clamping portion,
6. The terminal device according to appendix 4 or 5, wherein a female screw hole is formed in the second arm so as to face the through hole and to which the screw is screwed.
[0055]
【The invention's effect】
As described above, according to the first and third aspects of the present invention, the hinge mechanism and the side surface are made of a conductive material, and the side surface is electrically connected to the ground line in the liquid crystal display unit. By doing so, the ground line in the liquid crystal display unit → the side surface → the ground line of the hinge mechanism is formed.
[0056]
In addition, by forming a conductive clamping portion that cooperates with the side surface and sandwiches the second arm on the side surface, the electrical contact portion between the liquid crystal display unit and the hinge mechanism has conventionally been a liquid crystal display unit. In the present invention, in addition to the contact portion between the side surface of the liquid crystal display unit and the second arm, the contact portion between the holding portion of the liquid crystal display unit and the second arm is compared with the contact portion between the side surface of the liquid crystal display unit and the second arm. Will add to the contact area.
[0057]
Therefore, the grounding property of the liquid crystal display unit is improved and the cost can be reduced.
[0058]
Mounting is easy because a through hole is formed in the clamping portion and the second arm is mounted using a screw that engages with the through hole.
[0059]
Before Stories second arm opposite to the lengthwise end sides of the liquid crystal display unit, the clamping unit, by being formed in the lengthwise end of the side, electrical and liquid crystal display unit and a hinge mechanism The maximum contact area can be secured, the grounding property of the liquid crystal display unit is improved, and the cost can be reduced.
[0060]
According to the invention described in claim 2 and claim 4 , when the screw hole is formed in the side surface of the liquid crystal display unit, it is considered that the components in the liquid crystal display unit due to the screw that is screwed in are damaged. Therefore, a space must be provided near the screw hole in the liquid crystal display unit.
[0061]
In the present invention, a through hole having a diameter larger than the outer diameter of the neck portion of the screw is formed in the clamping portion, and a female screw hole is formed in the second arm so as to face the through hole and to which the screw is screwed. Accordingly, a screw hole or the like is not necessary on the side surface of the liquid crystal display unit, and a space in consideration of damage due to the screw is not required in the liquid crystal display unit, so that the liquid crystal display unit can be reduced in size.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a terminal device according to an embodiment.
FIG. 2 is an exploded perspective view of the liquid crystal display unit of FIG.
3 is a cross-sectional view along the axis of a screw when the terminal device of FIG. 1 is assembled.
FIG. 4 is a cross-sectional view along the axis of a screw according to another embodiment.
FIG. 5 is an exploded perspective view of a conventional liquid crystal display unit.
6 is a diagram showing an example of a mounting structure of the liquid crystal display unit shown in FIG.
7 is a diagram showing another example of a mounting structure of the liquid crystal display unit shown in FIG.
FIG. 8 is a diagram illustrating a problem.
[Explanation of symbols]
113a Display surface 117 Liquid crystal display unit 115a Side surface 127 First arm 129 Second arm 131 Hinge mechanism 151 Holding portion 151a Through hole 165 Screw

Claims (4)

A display unit attached to a main body having a key input device via a hinge mechanism, wherein the hinge mechanism includes a first arm and a second arm that are rotatable with respect to an axis, and the first arm is the main body. In addition, in the liquid crystal display unit in which the second arm is attached to a side surface of the display surface of the liquid crystal display unit,
The second arm is opposed to the entire longitudinal direction of the side surface of the liquid crystal display unit,
The hinge mechanism, the side surface is made of a conductive material, the side surface is electrically connected to a ground line in the liquid crystal display unit, and
Forming a conductive sandwiching portion that sandwiches the second arm in cooperation with the side surface in the entire longitudinal direction of the side surface,
A liquid crystal display unit, wherein a through hole is formed in the holding portion, and the second arm is attached using a screw that engages with the through hole. A through hole having a diameter larger than the outer diameter of the neck of the screw is formed in the clamping part,
Wherein the second arm, said through hole and facing, a liquid crystal display unit according to claim 1 Symbol mounting said screw, characterized in that the formation of the female screw hole to be screwed. A hinge mechanism having a first arm and a second arm rotatable about an axis;
A main body to which the first arm of the hinge mechanism is attached and having an input unit;
A liquid crystal display unit in which a second arm of the hinge mechanism is attached to a side surface of the display surface;
In a terminal device having
The second arm is opposed to the entire longitudinal direction of the side surface of the liquid crystal display unit;
The hinge mechanism, the side surface of the liquid crystal display unit is made of a conductive material, and the side surface is electrically connected to a ground line in the liquid crystal display unit,
Forming a conductive sandwiching part that sandwiches the second arm in cooperation with the side surface in the entire longitudinal direction of the side surface of the liquid crystal display unit;
A terminal device, wherein a through hole is formed in the clamping portion, and the second arm is attached using a screw that engages with the through hole . A through hole having a diameter larger than the outer diameter of the neck of the screw is formed in the clamping part,
The terminal device according to claim 3 , wherein a female screw hole is formed in the second arm so as to face the through hole and to which the screw is screwed .

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