JPH10177351A - Display device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a low-cost display device capable of feeling an excellent three-dimensional effect. SOLUTION: There is provided a display plate comprising a transparent plate having a low-reflection layer on both surfaces, a display portion formed of a colored print layer provided on one surface, and a light-impermeable layer provided on the other surface of the transparent plate. And a display device. A light-impermeable layer is provided on one side of a transparent plate having a light-reflective layer on both surfaces, and a display section with an opening is provided on the light-impermeable layer, and the other of the transparent plates corresponding to the design section is provided. A display device is provided with a display plate provided with a colored printed layer having a surface wider than the opening. A transparent plate having a colored print layer formed on one surface of a transparent plate having a light-reflective layer on one surface, with a transparent adhesive layer interposed therebetween, a display unit consisting of a plurality of stacked color print layers. And a display panel provided with a light-impermeable layer on the other surface of the lowermost transparent plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for displaying a design of a display section in three dimensions by using a transparent plate having a low reflection coating layer on both surfaces, which is used for an instrument of a vehicle, an aircraft, a ship or the like. About.

[0002]

2. Description of the Related Art Conventionally, a display device for displaying a design of a display portion such as flat characters, symbols, figures, etc. in three dimensions is known in the art as shown in the following (a) and (b). ing.

FIG. 4 and FIG. 5 are a perspective view of a display plate in a conventional display device (a) and an AA thereof, respectively.
It is a line expanded sectional view. FIG. 6 and FIG. 7 are a perspective view of a display plate in another conventional display device (b) and an enlarged sectional view taken along line AA, respectively. FIG. 8 is a cross-sectional view of another conventional display device (c) in which a metal plate is formed by pressing into a shape such as a character, a symbol, or a figure by pressing.
FIG. 9 is a cross-sectional view showing an example of a display device (b) incorporating a display plate.

A conventional display device will be described using these display devices. As shown in FIGS. 4 and 5, a display panel 1 having a light diffusion / transmission layer 3 of flat characters, symbols, figures, etc. on its surface as a display unit 2 and having a light-shielding film layer 4 on other surfaces.
Is illuminated from the front or rear of the display panel 1. Here, the display panel 1 is formed of a light-transmitting material, and the light-diffusing transmission layer 3
Is formed of a transparent sheet, paint or the like containing light diffusion particles inside, and is itself known.

[0005] As shown in FIGS. 6 and 7, a light diffusion transmission layer 3 having a shape of characters, symbols, figures, and the like is provided on the back surface of the display panel 1. The same characters, symbols, figures, and the like made of a light-transmitting resin material as described above are projected to form the display unit 2, and the other portions are covered with a light-shielding film layer 4, and the display unit 2 is provided from behind the display panel 1. Display devices adapted to irradiate are also known.

Further, as shown in FIG. 8, a metal plate is formed in a convex shape such as a character, a symbol, a figure, etc. by pressing to irradiate the display unit from above the display plate 1-1 as a display unit. Display devices are also known.

A display device incorporating such a display panel 1 is shown in FIG. This display device has a shallow box-shaped case 6 having an open upper surface, a display plate 1 covering an upper surface opening 7 of the case 6, a light source L provided in the case 1, and a light source L.
The light guide plate 8 guides light emitted from the display panel 1 to the display unit 2 of the display panel 1, and a light shielding cover 9 that covers the surface of the display panel 1.

The display section 2 protrudes from the opening 7 provided in the light-shielding cover 9 to the front side of the cover 9, and the tip of the display section 2 forms a diffusion surface 5 formed in a satin-like rough surface with small irregularities. Make up.

[0009]

According to such a conventional display device (a) (FIGS. 4 and 5), light emitted to the outside of the display unit 2 through the display plate 1 is diffused and transmitted. When the light is transmitted through the layer 3, the light is diffused to illuminate the light diffusion / transmission layer 3. However, in this state, a three-dimensional effect cannot be given to the display. By giving a color difference or a light / dark difference to both parts, a three-dimensional effect is given to the display.

However, such a display device (a)
Is because the display unit itself is a flat structure to the last, depending on the viewing angle, the effect of shadows such as characters is reduced,
There is a problem that the display does not give a three-dimensional effect.

According to the conventional display device (b) (FIGS. 6 and 7), light emitted to the outside of the display unit 2 through the display panel 1 is first diffused when passing through the light diffusion transmission layer 3. The light is diffused by the light diffusing surface 5 when passing through the display unit 2, and the surface 5 is illuminated. As a result, characters and the like with more three-dimensional effect than the display device (a) are visually recognized.

However, such a display device (b)
Is a display in which such a display plate 1 is incorporated because characters, symbols, figures, and the like made of a light-transmitting resin material are protruded from the surface of the display plate 1 by resin molding using a mold. In order to form the device, as shown in FIG. 9, it was necessary to form a light-shielding cover 9 having a shape that escapes the convex portion of the display unit 2 by resin molding. Strict precision was required for molding the light-shielding cover 9 in order to match with the projections of the display unit 2. These raise the problem of increasing the manufacturing cost of the display device.

According to the conventional display device (c) (FIG. 8),
Since the metal plate is formed into a shape such as a character, a symbol, and a figure by pressing, a three-dimensional effect can be felt, but fine display cannot be performed, and the design of the display unit is limited.

An object of the present invention is to solve such a problem. That is, an object of the present invention is to provide, at low cost, a display device that can be illuminated at night and has an excellent stereoscopic effect.

[0015]

Means for Solving the Problems The present inventor has made it possible to reduce the light reflected by external light on the front and back surfaces by coating the front and back surfaces of a highly transparent resin plate such as PMMA resin with front and back surfaces. Paying attention to the fact that it looks like there is no resin plate, providing a display unit with a colored printed layer on one surface of the resin plate, and providing a light impermeable layer on the other surface of the resin plate, the resin layer The present inventors have found that the design formed by the colored printing layer by the thickness of emerges in the light-impermeable layer and looks three-dimensional, thereby completing the present invention.

According to a first aspect of the present invention, in order to achieve the above object, in a display device, a display section comprising a colored printing layer is provided on one surface of a transparent plate having a low light reflection layer on both surfaces, It is characterized by including a display plate having a light-impermeable layer provided on the other surface of the transparent plate.

According to a second aspect of the present invention, in a display device, a light-impermeable layer is provided on one surface of a transparent plate having a low-light-reflection layer on both surfaces, and a display section having an opening is provided on the light-impermeable layer. It is characterized in that a display plate provided with a colored printed layer wider than the opening is provided on the other surface of the transparent plate corresponding to the display section.

According to a third aspect of the present invention, in the display device, a transparent plate having a light-reflection layer on one surface and a colored printed layer formed on one surface of the transparent plate is provided by a plurality of transparent plates via a transparent adhesive layer. A display unit comprising a plurality of color printing layers is provided in an overlapping manner, and a display plate provided with a light-impermeable layer on the other surface of the lowermost transparent plate is provided.

According to a fourth aspect of the present invention, there is provided a display device having a low light reflection layer on one surface and a low light reflection layer and a transparent plate having an opening on the other surface. A light-reflecting layer on the other surface of the transparent plate and a light-impermeable layer on the surface of the colored printing layer, and a surface of the low-light reflecting layer on one surface of the transparent plate substantially corresponding to the opening. Is a display unit.

According to a fifth aspect of the present invention, in the display device of the fourth aspect, the colored print layer has at least one cross-sectional shape selected from a rectangle, a trapezoid, a triangle, and a semicircle.

In the present invention, the transparent plate is made of PMMA resin,
It is made of a transparent or light-transmissive material such as polycarbonate. The opening formed in the transparent plate is formed by cutting or hot pressing the transparent plate, but may be formed when the transparent plate is subjected to injection molding.

The anti-reflective coating layer in the present invention is formed by coating a well-known anti-reflective coating composition in the art. Examples of the antireflection coating composition include hydrolyzates of silicate represented by the following general formula (1), and fine particle silica, particularly silica sol dispersed in a colloidal state.

## STR1 ## _{Si (OR) 4 (1)} ( wherein, R represents an alkyl group, an acyl group, an alkoxyalkyl group.) Light non-reflective film formed by such a non-reflective coating composition, It is desirable that the inorganic substance is contained in an amount of 30% by weight or more. The examples of the antireflection coating composition mentioned here are merely examples, and any known ones can be used as long as the object of the present invention is not adversely affected.

The colored printing layer in the present invention is formed of a UV curable resin ink or the like in which a coloring pigment is dispersed.
Such UV-curable resins include, for example, acrylic resins, but are not limited thereto. Since the UV-curable resin ink is less likely to lose its shape, the larger the thickness of the colored printing layer, the more effectively it can be used. The colored print layer is
It is formed by screen printing, offset printing, or the like on the display unit as a design of characters, symbols, scales, figures, and the like.

The light opaque layer in the present invention comprises a resin coating composition containing a black pigment or a meter ground color pigment.
Such a light impermeable layer is formed by screen printing, offset printing, or the like. The openings formed in the light-impermeable layer are formed when printing them.

[0025]

Embodiments of the present invention will be described below with reference to the drawings. 1 (a) to 1 (c) and FIG.
FIG. 3 is a sectional view of a display panel in a display device showing one embodiment of the present invention, and FIG. 3 is an explanatory diagram showing an edge light illumination arrangement showing one embodiment of the present invention.

(Embodiment 1) As shown in FIG. 1A, a display panel in a display device of the present invention is one of a transparent plate 10 having light low reflection layers 11, 11 'on both surfaces. Is provided with a display section 16A made of a color printing layer 12a. The light impermeable layer 13 is provided on the other surface of the transparent plate 10, that is, under the light low reflection layer 11 '.
When the display panel is exposed to external light, the reflected light is reduced to a low reflection coating 1.
1, 11 ′, and as if there is no transparent plate 10, the design formed by the colored print layer 12 a by the thickness H of the transparent layer 10 emerges on the light-impermeable layer 13 and becomes three-dimensional. appear.

(Embodiment 2) As shown in FIG. 1B, the display panel of the display device of the present invention has one of the transparent plates 10 having low reflection 11, 11 'layers on both surfaces. A light opaque layer 13 is provided on the surface and the light opaque layer 13
Is provided with a display section 16B comprising an opening. An opening 14 is provided on the other surface of the transparent plate 10 corresponding to the display section 16B.
A wider colored printed layer 12b is provided. When external light is applied to the display panel through the opening 14, the reflected light is reduced by the low reflection coatings 11 and 11 ′, and as if the transparent plate 1 was used.
Since there appears to be no “0”, the design formed by the colored printing layer 12 a by the thickness H of the transparent layer 10 appears on the light-impermeable layer 13 through the opening 14 and looks three-dimensional.

(Embodiment 3) As shown in FIG. 1C, the display panel of the display device of the present invention has one surface of a transparent plate 10 having a low light reflection layer 11 on one surface. A plurality of transparent plates 10 each having a colored print layer 12c formed thereon are laminated via a transparent adhesive layer (not shown), and a display unit 16 composed of a plurality of color print layers 12c, 12c, 12c, 12c.
C is provided, and at that time, the lowermost transparent plate 10 is provided with a low-light reflection layer 11 ′ on the other surface. Then, the light impermeable layer 13 is provided on the entire surface under the other surface of the transparent plate 10, that is, under the low reflection coating layer 11 '. When external light is applied to the display panel, the reflected light is reduced by the plurality of low-reflection coating layers as in the first embodiment. It emerges above and looks three-dimensional.

(Embodiment 4) As shown in FIGS. 2 (a) to 2 (d), the display panel of the display device of the present invention is a transparent plate having light low reflection layers 11, 11 'on both surfaces. Board 1
0 and one of the surfaces is displayed on the display units 16D, 16E, 16
F, 16G, the openings 10d, 10e, 10f, and 10g formed in the other surface of the transparent plate 10,
d, 12e, 12f, and 12g are provided. The openings 10d, 10e, 10f, 10
g other side and the colored printed layers 12d, 12e, 12
The light impermeable layer 13 is provided on the other surface of f and 12g. The cross-sectional shapes of the colored printed layers 12d, 12e, 12f, and 12g are rectangular, trapezoidal, triangular, and semicircular, respectively.

Natural light or external light irradiated by an illumination bulb shines on one surface of these display panels, or
As shown in FIGS. 3A and 3B, when the light irradiated by the edge light is incident from one edge of the transparent plate 10, the reflected light is reduced by the light low reflection layers 11, 11 '. It looks as if there is no transparent plate 10, or the light irradiated from the edge light is transmitted through the transparent plate and is reflected by the colored printing layers 12d, 12e, 12f and 12g to form a light portion and a dark portion. Is done.

Therefore, a design having a height corresponding to the I dimension formed by the colored printed layers 12d, 12e, 12f, and 12g by the thickness of the transparent layer 10 emerges on the light-impermeable layer 14 and is three-dimensionally represented. Or a fantastic three-dimensional design formed by the bright and dark portions of the light reflected on the colored print layers 12d, 12e, 12f and 12g.

[0032]

When the display panel is exposed to external light, reflected light is reduced by the low-reflection layer, and it looks as if there is no transparent panel. Therefore, only the thickness of the transparent layer is formed by the colored print layer. It is possible to provide a low-cost display device in which an excellent three-dimensional effect can be felt in which a design emerges in the light-impermeable layer and looks three-dimensional. Also, a fantastic three-dimensional design formed by the bright and dark portions of the light reflected on the colored printing layer that passes through the transparent plate can be displayed. Further, by changing the shape of the colored print layer, various three-dimensional expressions can be realized.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a display panel in a display device according to one embodiment of the present invention.

FIG. 2 is a cross-sectional view of a display plate in a display device according to another embodiment of the present invention.

FIG. 3 is an explanatory diagram showing an arrangement of edge light illumination according to the embodiment of the present invention.

FIG. 4 is a perspective view of a display plate in a conventional display device (a).

FIG. 5 is an enlarged sectional view of a main part taken along line AA of FIG. 4;

FIG. 6 is a perspective view of a display plate in a conventional display device (b).

FIG. 7 is an enlarged sectional view taken along the line AA of FIG. 6;

FIG. 8 is a cross-sectional view of a conventional display device (c) in which a metal plate is formed to have a design shape by pressing a metal plate.

FIG. 9 is a cross-sectional view illustrating an example of a display device (b) incorporating a display plate.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Transparent board 11, 11 'Light-reflective layer 12a, 12b, 12c Color printing layer 13 Light-impermeable layer 14 Opening 15d, 15e, 15f, 15g Opening 16A, 16B, 16C, 16D, 16E, 16F, 1
6G display

Claims (5)

[Claims] 1. A display panel comprising a transparent plate having a low-reflection layer on both surfaces, a display section of a colored printing layer provided on one surface, and a light-impermeable layer provided on the other surface of the transparent plate. A display device comprising: 2. A transparent plate having a light-reflective layer on both surfaces, a light-impermeable layer provided on one surface of the transparent plate, and a display portion provided with an opening in the light-impermeable layer, the transparent plate corresponding to the display portion. A display panel provided with a colored printed layer wider than the opening on the other surface of the display device. 3. A plurality of colored printing layers formed by laminating a plurality of transparent plates having a colored printing layer formed on one surface of a transparent plate having a light-reflective layer on one surface via a transparent adhesive layer. A display device, comprising: a display portion provided with a light-transmitting layer provided on the other surface of the lowermost transparent plate. 4. A display device comprising a light-reflecting layer on one surface and a transparent plate having an opening and a light-reflecting layer on the other surface, wherein a colored print layer is provided on the entire opening. A light-opaque layer is provided on the surface of the low-light reflection layer and the colored print layer on the other surface of the transparent plate, and the surface of the low-light reflection layer on one surface of the transparent plate substantially corresponding to the opening is defined as a display unit. A display device, comprising: 5. The display device according to claim 4, wherein the colored print layer has at least one cross-sectional shape selected from a rectangle, a trapezoid, a triangle, and a semicircle.