JP7631763B2 - Display device - Google Patents

Description

The present invention relates to a display device.

In a display device in which a sheet that is both optically transparent and decorative is provided on the surface of a light-emitting display, when the light-emitting display is activated and emitting light, the light from the light-emitting display passes through the sheet, allowing the characters, figures, symbols, etc. displayed on the light-emitting display to be seen. On the other hand, when the light-emitting display is deactivated, the sheet covers the light-emitting display, making it impossible to recognize, and allowing for a design that blends in with the surroundings (see, for example, Patent Documents 1 and 2 below).

JP 2018-128581 A Patent No. 6370519

In the above-mentioned conventional display device, the light-emitting display body is covered with a sheet so that the light-emitting display body cannot be recognized when the device is not in operation.
However, when the color tone of the plate material of a wall or the like to which the light-emitting display body is attached differs from the color tone of the light-emitting display body when it is not in operation, even if the light-emitting display body is covered with a sheet, the difference in color tone of the boundary between the light-emitting display body and the plate material is visible from above the sheet, and a person looking at the wall or the like will be able to recognize that the light-emitting display body is embedded in the wall or the like. As a method for making the boundary between the light-emitting display body and the plate material invisible, it is possible to make the boundary between the light-emitting display body and the plate material invisible from above the sheet by making the color of the sheet covering the light-emitting display body blacker or darker. However, if the color of the sheet is made blacker or darker, when the light-emitting display body is activated, the display content of the light-emitting display body cannot be recognized from above the sheet, and there is a problem in that visibility is reduced.

In view of the above, the present invention aims to provide a display device that can suppress a decrease in visibility while suppressing a decrease in design.

In order to solve the above-mentioned problems, the display device of the present invention has a light-emitting display body embedded in a plate material, a dimming layer provided on the surface side of the light-emitting display body, and a color tone adjustment layer provided between the light-emitting display body and the dimming layer, and the dimming layer has a covering base layer that is optically transparent and has a pattern and is provided on the surface side of the light-emitting display body so as to cover all or part of the surface of the light-emitting display body, the dimming layer is provided so as to cover the entire light-emitting display body and the plate material, the color tone adjustment layer is provided so as to overlap the entire area of the surface of the dimming layer facing the light-emitting display body except for the area overlapping with the light-emitting display body, and the dimming layer further has a pattern-imparting layer provided on the surface side of the light-emitting display body to impart a pattern to light from the light-emitting display body and allow it to transmit.

According to one aspect of the present invention, a color tone adjustment layer is provided in the area of a plate material in which a light-emitting display is embedded, excluding the light-emitting display, thereby preventing a decrease in visibility while also preventing a decrease in design.

1 is a cross-sectional view illustrating a schematic configuration of an embodiment of a display device according to the present invention. 1 is a schematic diagram showing an example of a panel to which a display device according to the present invention is applied. 13 is a modified example of the display device according to the present invention. FIG. 11 is a cross-sectional view illustrating a schematic configuration of a main part of another embodiment of a display device according to the present invention.

An embodiment of a display device according to the present invention will be described with reference to the drawings, but the present invention is not limited to the embodiment described with reference to the drawings.

<Embodiment>
An embodiment of a display device according to the present invention will be described with reference to FIGS.

The display device 100 according to this embodiment is a fitting-type display device that is fitted into a board 10 and used as a wall or the like.
As shown in FIG. 1, a display device 100 according to this embodiment includes a light-emitting display body 101 and a cover sheet 100 a provided on the front surface side of the light-emitting display body 101 .
The light-emitting display body 101 is fitted into the plate material 10 so as to be approximately flush with the plate material 10, and the light-emitting display body 101 and the entire plate material 10 are covered with a covering sheet 100a to form a panel 20 (20b) as shown in Fig. 2. The panel 20b into which the light-emitting display body 101 is fitted and the panels 20a and 20c into which the light-emitting display body 101 is not fitted are arranged so as to be in contact with each other to form a wall surface.

When the light-emitting display body 101 is in operation, the panel 20b can display information displayed on the display screen of the light-emitting display body 101 on the surface of the panel 20b, and when the light-emitting display body 101 is not in operation, the panel 20b is configured to have a uniform color tone.
As shown in FIG. 1, the cover sheet 100a includes a light-controlling layer 100aa and a color tone adjusting layer 150 provided on the back surface side of the light-controlling layer 100aa.

The light-adjusting layer 100aa is provided with a pattern-imparting layer 110 that is provided on the surface side of the light-emitting display body 101 to impart a pattern to the light from the light-emitting display body 101 and transmit it while complementing the color tone of the picture pattern of the covering layer 130 described below; a base layer 120 that is optically transparent and provided on the pattern-imparting layer 110 so as to cover the entire surface of the pattern-imparting layer 110; a covering layer 130 that is optically transparent and has a pattern and provided on the base layer 120 so as to cover the entire surface of the base layer 120; and a surface protection layer 140 that is optically transparent and provided on the covering layer 130 so as to cover the entire surface of the covering layer 130.

The covering sheet 100a is arranged to cover the entire surface of the plate material 10 in which the light-emitting display 101 is embedded, that is, in the case of the panel 20b, the light-emitting display 101 and the entire surface of the plate material 10 in which the light-emitting display 101 is embedded. The color tone adjustment layer 150 is arranged to overlap the entire surface of the plate material 10, that is, the entire area of the surface of the light-adjusting layer 100aa on the light-emitting display 101 side, excluding the area overlapping with the light-emitting display 101. Here, "overlapping the entire area excluding the area overlapping with the light-emitting display 101" includes not only the case where the area completely overlaps with the area excluding the area overlapping with the light-emitting display 101, but also the case where the area almost overlaps, for example, overlaps with about 90% of the width of the plate material 10, or overlaps with 90% of the height of the plate material 10. In other words, depending on the arrangement position and size of the panel 20, the vicinity of the edge of the panel 20 may be relatively difficult to recognize even if the color tone is different. Therefore, in areas where a difference in color tone is relatively difficult to notice, such as near the edges of the plate material 10, it is not necessary to provide the color tone adjustment layer 150.

The light-emitting display 101 is capable of emitting light to display characters, figures, symbols, etc. on its surface, and examples of such displays include a liquid crystal display (LCD), an organic electroluminescent display (OELD), and a light-emitting diode (LED) display.

The pattern-imparting layer 110 has a substrate 111 that is located on the light-emitting display 101 side and has optical transparency over the entire surface, and a pattern layer 112 that is provided on the substrate 111 and imparts a pattern to the light that passes through the substrate 111.

The substrate 111 is made of a light-transmitting resin film and has a thickness of 50 μm or more and 1000 μm or less.

The pattern layer 112 is formed by printing ink of a color that complements the color tone of the pattern of the coating layer 130 on the substrate 111 by inkjet printing, gravure printing, or the like, and has light reflectivity and is formed with a plurality of voids 112a in an array. The pattern layer 112 has a thickness of 10 μm to 500 μm, a diameter of the voids 112a of 10 μm to 1000 μm, and a distance between adjacent voids 112a of 20 μm to 2000 μm. In FIG. 1, the pattern layer 112 is enlarged compared to the light-emitting display 101 to make the shape of the pattern layer 112 easier to understand.

The base layer 120 is made of a light-transmitting resin film and has a thickness of 50 μm or more and 1000 μm or less.

The covering layer 130 has a color-adjusting layer 131 that is located on the base layer 120 side and adjusts the color, and a pattern layer 132 that is provided on the color-adjusting layer 131 and has a pattern.

The color-adjusting layer 131 is printed with ink over the entire surface of the base layer 120 so that it is optically transparent, and adjusts the color so that it is not visible when the light-emitting display 101 is not in operation. The color-adjusting layer 131 has a thickness of 1 μm or more and 500 μm or less.

The pattern layer 132 is printed with ink onto the color-adjusting layer 131 in various patterns such as wood grain vessels and marble to provide light transmission, and is designed to blend in with the surroundings when the light-emitting display 101 is not in operation. The pattern layer 132 has a thickness of 1 μm or more and 500 μm or less.

The surface protection layer 140 is made of a colorless and transparent resin or the like, and is capable of protecting the pattern layer 132, and has a thickness of 1 μm to 2000 μm. The surface of the surface protection layer 140 can be not only flat, but also uneven (embossed), and furthermore, the surface can be provided with a coating layer for adjusting gloss, etc.

In this embodiment, the base layer 120 and the covering layer 130 are provided on the pattern-imparting layer 110 so as to cover the entire surface of the pattern-imparting layer 110, and constitute a covering base layer that is optically transparent and has a pattern.
The color tone adjustment layer 150 is provided to prevent a decrease in design quality by making the color tone of the surface of the light-emitting display body 101 when it is not in operation different from the color tone of the surface of the plate material 10 in which the light-emitting display body 101 is embedded, so that when the light-emitting display body 101 is in a stopped state, the boundary between the light-emitting display body 101 and the plate material 10 appears transparent with a different color tone, allowing people to recognize that the light-emitting display body 101 is incorporated in the panel 20.

The color tone adjusting layer 150 is provided so as to cover the entire surface of the plate 10 excluding the light emitting display body 101 when viewed from the front side of the light emitting display body 101 .
The color tone adjustment layer 150 is made of, for example, a black sheet, and has a characteristic of a regular reflectance of 20% or less and a diffuse reflectance of 20% or less. The thickness of the color tone adjustment layer 150 is 1 mm or less. Note that the color tone adjustment layer 150 is not limited to a black sheet, and for example, a coating film having a regular reflectance of 20% or less and a diffuse reflectance of 20% or less may be formed by applying black ink to an area of the surface of the base material 111 opposite the pattern layer 112, excluding the area overlapping with the light-emitting display body 101.

The color tone adjusting layer 150 may be a paper sheet, and any material having the characteristics of a regular reflectance of 20% or less and a diffuse reflectance of 20% or less may be used.
It is desirable that the difference in specular reflectance and diffuse reflectance between the color tone adjustment layer 150 and the surface of the light emitting display 101 be 3% or less.

The display device 100 according to one embodiment of the present invention can be manufactured as follows. First, ink is printed onto the base layer 120 to provide the color adjustment layer 131, and then ink is printed onto the color adjustment layer 131 to provide the pattern layer 132, thereby forming the covering layer 130. Thereafter, a colorless and transparent ink is printed onto the entire surface of the covering layer 130, or a colorless and transparent resin or the like is laminated to provide the surface protection layer 140.

At the same time, the pattern layer 112 is printed in an array on the substrate 111 by inkjet printing, gravure printing, or the like to form the pattern-imparting layer 110. The base layer 120 is then superimposed on the pattern-imparting layer 110, and the color-adjusting layer 150, which has an opening in the portion that overlaps with the light-emitting display 101, is then superimposed on the substrate 111 to form the covering sheet 100a.

Then, in the plate material 10 with the light-emitting display body 101 embedded therein, the cover sheet 100a is arranged so that the light-emitting display body 101 overlaps with the opening 150a of the cover sheet 100a, and the cover sheet 100a covers the entire surface of the plate material 10, including the light-emitting display body 101, thereby obtaining the display device 100.

The operation of the display device 100 according to one embodiment of the present invention thus obtained will now be described.
When the light-emitting display 101 is activated to emit light, light passes through the voids 112a of the pattern layer 112 via the substrate 111 of the pattern-imparting layer 110, and transmits through the color-adjusting layer 131 and pattern layer 132 of the covering layer 130 via the base layer 120, making it possible to view letters, figures, symbols, etc. on the surface protective layer 140, i.e., on the surface of the panel 20.

On the other hand, when the light-emitting display 101 is deactivated and stops emitting light, the covering layer 130 and the patterning layer 110 cover and conceal the light-emitting display 101, and the pattern layer 112 reflects light from the covering layer 130 side, so that people cannot recognize the light-emitting display 101 on the surface of the panel 20, resulting in a design that blends in with the surroundings.
Furthermore, a color tone adjustment layer 150 is disposed between the pattern-imparting layer 110 and the light-emitting display body 101 so that the color tone adjustment layer 150 covers the entire surface of the plate material 10 except for the light-emitting display body 101 .

Therefore, even if the color tone of the light-emitting display 101 when not in operation differs from the color tone of the plate material 10, by overlaying the color-adjusting layer 150 on the plate material 10, when the surface of the panel 20 is viewed, the portion overlapping with the light-emitting display 101 and the portion overlapping with the plate material 10 will have a substantially uniform color tone. Therefore, when a person looks at the surface of the panel 20 when it is not in operation, it is possible to avoid noticing the presence of the light-emitting display 101, and it is possible to achieve a design that harmonizes with the surroundings.

The color tone adjustment layer 150 is provided only on the portion excluding the light-emitting display body 101. Therefore, even if a black sheet is provided as the color tone adjustment layer 150, when the light-emitting display body 101 is operated, it is possible to avoid the display information of the light-emitting display body 101 being displayed on the surface of the panel 20 through the cover sheet 100a becoming difficult to see, and it is possible to suppress a decrease in visibility while suppressing a decrease in design.

In addition, in the display device 100 according to one embodiment of the present invention, there is absolutely no need to align the color-adjusting layer 131 and the pattern layer 132 of the covering layer 130 or the surface protection layer 140 with respect to the pattern layer 112 of the pattern-imparting layer 110, which eliminates the need to adjust alignment, etc.

In addition, since the base layer 120, the covering layer 130, and the surface protection layer 140 are provided over the entire surface without any gaps, there is no loss of texture or design, and it is possible to prevent dust and other particles from entering the interior, thereby preventing a loss of visibility.

Therefore, the display device 100 according to one embodiment of the present invention can be easily manufactured while minimizing deterioration in texture, design, and visibility.

As shown in FIG. 2, the panels 20a and 20c, which form a wall surface together with the panel 20b in which the light-emitting display 101 is embedded, do not have the light-emitting display 101. However, the entire surface of these plate materials 10 is covered with a covering sheet having the same layer structure as the covering sheet 100a provided on the panel 20b, except that the color tone adjustment layer 150 does not have an opening 150a corresponding to the light-emitting display 101 and covers the entire back side of the pattern-imparting layer 110.

If panels 20a and 20c were constructed using covering sheets with a layer structure different from that of panel 20b, there would be a possibility that the color tone would differ between panels 20b and 20a and 20c, reducing the design quality of the wall surface.

However, even for panels 20a and 20c that do not have the light-emitting display body 101, the plate material 10 is covered with a covering sheet having the same layer structure as the covering sheet 100a, so that the color tones can be made approximately the same among panels 20a to 20c, and deterioration in design can be suppressed.
In addition, the substrate 111 and base layer 120 of the pattern-imparting layer 110 are not limited to being colorless and transparent, and can be colored as long as they can transmit light, and the color, etc. can be appropriately selected depending on various conditions such as the visibility of the light-emitting display 101 and harmony with the surroundings.

In the above embodiment, the case where the pattern-imparting layer 110 is included as the light-adjusting layer 100aa has been described, but if the pattern of the covering layer 130 is a pattern that does not require color complementation, as shown in FIG. 3, the light-adjusting layer 100aa' does not necessarily have to have the pattern-imparting layer 110.

In the above embodiment, the display device 100 is described as being applied to one panel 20 among multiple panels that form a wall surface, but the present invention is not limited to this. For example, the display device 100 can be applied to a panel used as a partition or guide board, and can also be applied to a plate that forms a wall surface in one piece. It can also be applied to a table, an interior panel of a vehicle, etc.

In the above embodiment, the display device 100 is described as having a surface protective layer 140 on the covering layer 130, but the present invention is not limited to this. In another embodiment, for example, it is possible to omit the surface protective layer 140 and have the covering layer 130 exposed. However, providing the surface protective layer 140 on the covering layer 130 as in the above embodiment is highly preferable because it can prevent deterioration of the pattern on the covering layer 130.

In the above embodiment, the display device 100 is described in which the covering layer 130 is formed from the color adjusting layer 131 and the pattern layer 132, but the present invention is not limited to this. In other embodiments, for example, depending on conditions such as the color of the base layer 120 and the pattern of the pattern layer 132, it is also possible to omit the color adjusting layer 131 and form the covering layer only from the pattern layer 132.

In the above embodiment, the display device 100 is described as having a coated base layer made up of the base layer 120 and the coating layer 130, but the present invention is not limited to this. As another embodiment, for example, depending on the conditions such as the pattern, it is also possible to apply a coated base layer in which the base layer 120 and the coating layer 130 are integrated, that is, a coated base layer that is light-transmitting and has a pattern.

In the above embodiment, the display device 100 is described in which the covering base layers 120, 130 are provided on the patterning layer 110 so as to cover the entire surface of the patterning layer 110, but the present invention is not limited to this. As another embodiment, for example, it is also possible to provide a display device in which a covering base layer is provided on the patterning layer 110 so as to cover a portion of the surface of the patterning layer 110.

In the above embodiment, the display device 100 is provided with a pattern layer 110 formed by printing a pattern layer 112 having a plurality of voids 112a on a light-transmitting substrate 111, but the present invention is not limited thereto. As another embodiment, for example, as shown in FIG. 4, a light-shielding film material is provided on a light-shielding substrate 511, and then a plurality of light-passing holes 510a are formed by a laser beam, a drill, or the like to provide a pattern layer 512, thereby applying a pattern layer 510 that transmits light from the light-emitting display body 101 and reflects light from the coating base layers 120 and 130.
Although the embodiment of the present invention has been described in detail above, in reality, the present invention is not limited to the above embodiment, and even if there are modifications within the scope of the gist of the present invention, they are included in the present invention.

The display device according to this embodiment can be easily manufactured while minimizing degradation of texture, design, and visibility, and can therefore be used in an extremely beneficial manner in industry.

10 Plate material 20, 20a to 20c Panel 100, 100' Display device 100a Covering sheet 100aa Light control layer 101 Light-emitting display body 110 Pattern-imparting layer 111 Base material 112 Pattern layer 112a Vacant space 120 Base layer 130 Covering layer 131 Color-adjusting layer 132 Design layer 140 Surface protective layer 150 Color-adjusting layer 510 Pattern-imparting layer 510a Light-transmitting hole 511 Base material 512 Pattern layer

Claims (9)

A light-emitting display body embedded in the plate material;
A light control layer provided on a front surface side of the light emitting display;
a color tone adjusting layer provided between the light emitting display and the light control layer,
The light-adjusting layer includes a covering base layer that is provided on the front surface side of the light-emitting display body so as to cover the entire or part of the surface of the light-emitting display body, and that has light transparency and a pattern;
The light control layer is provided so as to cover the light emitting display and the plate material as a whole,
the color tone adjusting layer is provided so as to overlap an entire area of the surface of the light-adjusting layer facing the light-emitting display body, except for an area overlapping with the light-emitting display body ;
The light-controlling layer is
The display device further comprises a pattern-imparting layer provided on a surface side of the light-emitting display body to impart a pattern to the light from the light-emitting display body and transmit the light . The display device according to claim 1, characterized in that the color tone adjustment layer has a specular reflectance of 20% or less and a diffuse reflectance of 20% or less. The display device according to claim 1 or 2, characterized in that the color tone adjustment layer is made of a black sheet. The display device according to claim 1 or 2, characterized in that the color tone adjustment layer is made of a coating of black ink. The coating base layer comprises:
a base layer provided on the pattern-imparting layer so as to cover the entire or a part of a surface of the pattern-imparting layer and having optical transparency;
a covering layer provided on the base layer so as to cover the entire surface of the base layer, the covering layer having light transmission and a pattern;
The display device according to any one of claims 1 to 4, further comprising: 6. The display device according to claim 5 , further comprising a surface protection layer having optical transparency, the surface protection layer being provided on the covering base layer so as to cover the entirety or a part of the surface of the covering layer. The coating layer is
a color adjusting layer located on the base layer side for adjusting a color;
a pattern layer provided on the color-adjusting layer and having the pattern;
7. The display device according to claim 5 , further comprising: 8. The display device according to claim 5 , wherein the pattern-imparting layer has a plurality of light-passing holes formed therein for passing light from the light -emitting display. The patterning layer comprises:
a substrate located on the light-emitting display body side and having optical transparency over the entire surface;
a pattern layer provided on the substrate to impart the pattern to light passing through the substrate;
9. The display device according to claim 1 , further comprising:

Images