JP2007199510A - Surface film and color display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a surface film and a color display which can improve image quality when an image is viewed by preventing color separation in the same pixel while preventing color mixing between adjacent pixels. <P>SOLUTION: In the surface film 4 arranged at the surface of a color display where one pixel is formed of a plurality of sub pixels, a projecting face part 5 is formed at every pixel on a light incident side surface and further an intermediate diffusing layer 7 formed at a position where light is converged by the projecting face part 5 and a surface diffusing layer 8 formed at a light emitting side surface are formed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a reflective film and a color display, and more particularly to a surface film and a color display related to light refraction.

  In recent years, the demand for liquid crystal displays instead of CRT displays has been increasing. As an example of such a color liquid crystal display, a TFT-side substrate module including a switching element such as a TFT is provided in front of a backlight, the substrate module, a color filter, and a counter electrode serving as a counter electrode of the substrate module The structure which provides a liquid-crystal layer between side substrate modules is mentioned. In this liquid crystal display, a light transmitting state and a light blocking state are created for each pixel by the operation of the switching element, and light converted from electric energy passes through the color filter so that a color image is visually recognized in front. .

  In the color filter, one colored layer of blue (B), green (G), and red (R), which are the three primary colors, is arranged in each pixel, and light irradiation to each colored layer is performed. It is possible to develop various colors by adjusting the color and mixing these colors. In addition, a black layer has been provided at the boundary between these colored layers in order to improve the visibility such as increasing the display contrast and coloring effect.

  However, in a liquid crystal display that is such a color monitor, when monochrome display is performed, when the screen is viewed at a close distance, color mixture of light constituting adjacent pixels, color separation within the same pixel, or Image noise was generated, such as making the black layer stand out.

  On the other hand, in Patent Document 1, for each pixel that forms a liquid crystal display screen, a filter panel formed so as to converge each light bundle from three primary color light emitting portions that form each pixel, for example, each pixel A technique is disclosed in which a meniscus concave lens having both sides formed in a concave lens shape is provided on the front surface of a liquid crystal display screen.

Or in patent document 2, each pellet of 2 colors LED is provided in the outer side of the optical axis of a resin lens among 3 colors LED which forms 1 pixel, and the chief ray radiated | emitted from LED of each color is a cylindrical concave lens. After refracting and making it parallel, it can be configured to diffuse on the display surface, or the principal rays radiated in parallel from the three color LEDs forming one pixel are converged by a convex lens and then parallel by a cylindrical lens. And a technique for diffusing on the display surface is disclosed.
JP-A-5-11243 JP-A-8-202292

  However, no matter which technique is used, the three color light beams emitted from the primary color light emitting section or LED are converged from the actual pitch of each light source and projected onto the display surface. When viewed, the gap between the pixels becomes large, and the pixel grid is conspicuous on the contrary.

  Therefore, an object of the present invention is to provide a surface film and a color display capable of improving image quality when an image is viewed by preventing color separation within the same pixel while preventing color mixture between adjacent pixels. .

In order to solve the above-mentioned problem, the surface film according to claim 1,
A surface film disposed on the surface of a color display in which one pixel is formed by a plurality of subpixels,
A convex portion is formed for each pixel on the light incident side surface, and
An intermediate diffusion layer formed at a position where light is collected by the convex surface portion, and a surface diffusion layer formed on the light emission side surface.

  According to the first aspect of the present invention, when such a surface film is applied to a color display, the light emitted from the backlight of the color display is arranged by arranging the convex portion on the emission side surface of the color display. After passing through the color filter, the light is incident on the surface film via the convex surface portion formed for each pixel and is condensed by the convex surface portion. Then, after the condensed light is diffused by the intermediate diffusion layer, it can be further diffused by the surface diffusion layer and emitted from the surface film.

The invention according to claim 2 is the surface film according to claim 1,
The surface diffusion layer is disposed at a position where light emitted from the intermediate diffusion layer is diffused to the size of a pixel when entering the surface diffusion layer.

  According to the second aspect of the present invention, the surface diffusion layer is disposed at a position where the light emitted from the intermediate diffusion layer is diffused to the size of the pixel when entering the surface diffusion layer. Light having the same size as the pixels can be emitted from the film.

The invention according to claim 3 is the surface film according to claim 1 or 2,
A light absorbing portion is disposed between adjacent pixels.

  According to the third aspect of the present invention, since the light absorbing portion exists between the adjacent pixels, it is possible to prevent the light from entering the adjacent pixels even if the light is diffused by the intermediate diffusion layer. .

Invention of Claim 4 is the surface film as described in any one of Claims 1-3,
A concave surface portion is provided to make light emitted from the intermediate diffusion layer substantially parallel.

  According to the invention described in claim 4, the light diffused by the intermediate diffusion layer can be made substantially parallel light at the concave surface portion.

The invention according to claim 5 is a color display,
The surface film as described in any one of Claims 1-4 is arrange | positioned on the surface.

  According to invention of Claim 5, a color display can obtain the effect | action similar to Claims 1-4. After permeate | transmitting a color filter, a surface film is permeate | transmitted through a convex-surface part. Light emitted from the backlight can be condensed for each pixel in the surface film.

The invention described in claim 6 is the color display according to claim 5,
The present invention is characterized by comprising a backlight in which light emitted to the surface film is substantially parallel light.

  According to the sixth aspect of the present invention, since the incident light on the surface film can be made substantially parallel light, when various components such as a liquid crystal panel are arranged between the color filter and the surface film. Even if it exists, the emitted light to a surface film can be made into substantially parallel light.

The invention described in claim 7 is the color display according to claim 5 or 6,
The surface film is applied to any one of a liquid crystal display, a plasma display, and an organic EL display.

  According to invention of Claim 7, a surface film is applied to either a liquid crystal display, a plasma display, or an organic electroluminescent display.

  According to the first aspect of the present invention, the surface film mixes the light emitted from the backlight for each pixel in the surface film, and then diffuses and emits the light. While preventing light from entering the surface film corresponding to the adjacent pixels, it is possible to prevent color mixture between the adjacent pixels and improve the image quality when viewing the image.

  According to the invention described in claim 2, the size of the pixel and the range of the light emitted from the surface film can be made the same size, and the gap between the pixels is not enlarged, and the image is visually observed. Image quality can be improved.

  According to the third aspect of the present invention, it is possible to improve the image quality when viewing an image while preventing color mixture between adjacent pixels.

  According to the fourth aspect of the present invention, the light incident on the surface film can be refracted into substantially parallel light at the concave surface portion and can proceed to the surface diffusion layer, so that the light within the same pixel can be made uniform. It is possible to improve the image quality when viewing the image.

  According to the fifth aspect of the present invention, the same effects as those of the first to fourth aspects can be obtained, and the image is visually observed while preventing color separation between adjacent pixels and preventing color separation within the same pixel. Image quality can be improved.

  According to the invention described in claim 6, even when the color filter and the surface film are not close to each other, when the image is viewed while preventing color separation between adjacent pixels and preventing color separation in the same pixel. Image quality can be improved.

  According to the seventh aspect of the present invention, even when a liquid crystal display, a plasma display, or an organic EL display is used as a color display, color separation within the same pixel is prevented, and discoloration due to light leakage into adjacent pixels. Thus, color display can be performed appropriately.

  Embodiments of the present invention will be described below with reference to FIGS.

(First embodiment)
First, a first embodiment of the present invention will be described with reference to FIG.
FIG. 1 shows an embodiment of a color liquid crystal display according to the present invention to which a surface film according to the present invention is applied.

As shown in FIG. 1, a color liquid crystal display 100 according to this embodiment includes a liquid crystal panel 1. The liquid crystal panel 1 includes a polarizing plate, a glass substrate, a transparent electrode, an alignment film, a liquid crystal layer, an alignment film, and a transparent electrode. Are provided in order with a panel layer 1a. A color filter 2 is provided on the surface of the panel layer 1a on the side where the transparent electrode is formed.
In the color filter 2, subpixels 2b, 2b, and 2b of blue (B), green (G), and red (R) are sequentially arranged via a support member 2a, and these three subpixels 2b are arranged. One pixel is composed of a pair. A grid-like black boundary line is formed on the support member 2a so as to surround each pixel.
The surface of the color filter 2 on the side where the panel layer 1a is not formed is provided with a panel layer 1b in which a glass substrate and a polarizing plate are sequentially formed in layers.
By forming the liquid crystal panel 1 in this way, the color filter 2 sandwiched between the glass substrates is disposed inside the liquid crystal panel 1.

  A backlight 3 that emits light toward the liquid crystal panel 1 is disposed on the surface of the liquid crystal panel 1 that faces the panel layer 1a. The backlight 3 is configured so that light transmitted through the liquid crystal panel 1 is substantially parallel light. So that the light can be emitted. This is because when the image is displayed, the light emitted from the backlight 3 passes through the color filter 2 and then passes through the liquid crystal panel 1 to be visually recognized. This is to prevent light that has passed through a region corresponding to a specific pixel from spreading on the incident surface side of the surface film 4 to be described later over the pixel pitch and mixing with light that constitutes an adjacent pixel. This prevents light leakage into adjacent pixels at the incident stage.

  As a specific configuration of such a backlight 3, for example, a vector radiation coupling type backlight configuration using a circular prism sheet 3 a can be cited.

  The circular prism sheet 3a is a sheet in which prisms are concentrically arranged. This sheet is arranged on the upper surface of the light guide plate 3b so that the prism surface is the lower surface, and the reflection sheet 3c is disposed on the lower surface of the light guide plate 3b. Deploy. A concave / convex pattern is formed on the lower surface of the light guide plate 3b. An LED is arranged at the center of the prism at the end of the light guide plate 3b, and light is emitted from the LED to guide light. Light incident from the end face of the light plate 3b is totally and linearly reflected on the upper and lower surfaces of the light guide plate 3b, and is guided radially and linearly around the LED, and the angle of the incident light is changed by the uneven pattern. When the incident angle to the light guide plate 3b is smaller than the critical angle, light is emitted obliquely from the upper surface of the light guide plate 3b, and the emitted light is refracted by the lower surface prism and directed in a certain direction. Accordingly, substantially parallel light is emitted. As a result, the backlight 3 functions as a backlight capable of emitting substantially parallel light, enabling an analytical optical design, and the optimal directivity profile of the emitted light, such as the uniformity of the emitted light and the emission efficiency. Therefore, parallel light with a narrow directivity of emitted light can be emitted.

Here, when the substantially parallel property of the backlight 3 is defined, the condition of the substantially parallel property of the emitted light from the backlight 3 is that the emitted light having a spread angle of α <θ, where α is the half-value angle of the emitted light. Is substantially parallel light.
Here, θ satisfies tan θ = L / H.
(H: the distance from the edge of the pixel to the position where the surface film 4 is perpendicular and hits the convex surface part 5, L: the distance from the edge of the pixel to the nearest sub-pixel 2b That's it.)

For example, in a conventional vector-coupled LED backlight that does not use a circular prism sheet, the divergence half-value angle of emitted light is about ± 40 degrees, whereas in this backlight configuration, it is reduced to about ± 20 to 25 degrees. Therefore, it is possible to emit substantially parallel light as compared with the conventional case.

  A sheet-like surface film 4 made of a transparent plate, glass, PET, acrylic resin, or the like is disposed on the surface of the liquid crystal panel 1 facing the panel layer 1b.

  The surface of the surface film 4 facing the liquid crystal panel 1 is provided with a condensing lens 6 in which a convex surface portion 5 protruding from the surface facing the liquid crystal panel 1 is formed for each pixel. Then, the light incident on the inside of the surface film 4 can be condensed at one point for each pixel. Examples of the condensing lens 6 include a cylindrical lens. Further, an intermediate diffusion layer 7 is formed at a position where the light is condensed through the condensing lens 6 in the surface film 4, and the light collected by the condensing lens 6 is light emitted from the intermediate diffusion layer 7. It is made to diffuse with respect to the front side in the traveling direction. A surface diffusion layer 8 is formed on the surface of the surface film 4 opposite to the surface on which the condensing lens 6 is formed. In the surface diffusion layer 8, light transmitted through the surface film 4 is transmitted in the pixel range. It is configured to diffuse inside. The intermediate diffusion layer 7 and the surface diffusion layer 6 can be applied to a conventionally known surface sheet for preventing image flickering and color separation. The surface film 4 is formed on the substrate 10 with the condenser lens 6 and the intermediate diffusion layer 6. The diffusion layer 7 and the surface diffusion layer 8 are bonded together.

  In the present embodiment, visual observation is performed from the surface film 4 side toward the backlight 3 side.

Next, the operation of the color liquid crystal display 100 will be described.
When a signal for displaying an image is output to the color liquid crystal display 100, for example, from an external device, the light emitted from the backlight 3 is transmitted through the panel layer 1a in the liquid crystal panel 1. Thereafter, the light passes through the color filter 2, is converted into light of a color corresponding to each sub-pixel 2b in the color filter 2, and enters the panel layer 1b.

  Then, the light incident on the panel layer 1b is substantially parallel light for each sub-pixel 2b, and passes through the panel layer 1b while maintaining this state. Next, the light emitted from the panel layer 1b is incident on the surface film 4 via the convex surface portion 5, proceeds in a refracted manner according to its shape, and is focused. An intermediate diffusion layer 7 is formed at the focal position, and the light is once condensed for each pixel by the intermediate diffusion layer 7 and then toward the surface diffusion layer 8 that is the traveling direction thereof. Diffused.

  That is, the light incident on the surface film 4 is collected for each convex surface portion 5, and is incident from the convex surface portion 5 adjacent to the convex surface portion 5 inside the surface film 4 corresponding to a certain convex surface portion 5. Including the light that is transmitted through the sub-pixel 2b serving as the adjacent pixel, the incident light is prevented from being mixed with the light emitted from the adjacent pixel. At the same time, the light condensed by the convex surface portion 5 is diffused by the intermediate diffusion layer 7 and is within a certain range after intersecting the light transmitting through the surface film 4 corresponding to the certain convex surface portion 5. A color image can be displayed in a state where light that can be diffused and light transmitted through the sub-pixels 2b constituting the same pixel are uniformly mixed, and a sharp image is visually recognized.

  Therefore, according to the color liquid crystal display 100 of the present embodiment, the light emitted from the backlight 3 is not mixed with the light constituting the adjacent pixels while being transmitted through the surface film 4 through the color filter 2. And the light which comprises the same pixel can be mixed, the color separation between adjacent pixels can be prevented, the color separation in the same pixel can be prevented, and the image quality at the time of viewing an image can be improved.

  In addition, the condenser lens 6 is a relatively easy-to-obtain member, and is cheaper than a case where a new process is applied to the conventional surface film, such as forming a slit in the surface film, to obtain the same effect. Can do.

  In the present embodiment, the backlight configuration of the vector radiation coupling method using the circular prism sheet 3a has been described as the backlight 3 capable of emitting substantially parallel light. By using a laser instead of, substantially parallel light can be emitted.

  Alternatively, as a configuration capable of emitting substantially parallel light, a looper for further cutting the diffused light, that is, a light absorption column, may be disposed along the light traveling direction for each pixel. As an example of using the looper, the looper may be inserted into the diffusion sheet in the light guide plate 3b.

  In addition, as a configuration of the backlight 3, instead of using the circular prism sheet 3a, a functional composite light guide in which the light guide plate 3b and the diffusion film constituting the backlight 3 are integrated through a microlens structure. The body can also be used. By arranging the LED in this light guide in a single LED type and emitting light from the LED, the spread half-value angle of the emitted light can be reduced to about ± 6 degrees up and down, about ± 3 degrees left and right, Compared with the conventional case, substantially parallel light can be emitted.

  In the present embodiment, a liquid crystal display has been described as an example of a color display. However, any display having a configuration in which one pixel is displayed using a plurality of subpixels 2b may be used. The present invention can also be applied to an EL display.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 2, the color liquid crystal display 200 according to the present embodiment is the same as the color liquid crystal display 100 according to the first embodiment except that the condenser lens 6 is formed of glass and between the intermediate diffusion layer 7 and the condenser lens 6. Or the liquid crystal panel 11 which was changed so that the function of the panel layer 1b was provided in the surface film 4 by installing a polarizing plate between the surface diffusion layer 8 and the board | substrate 10, and having the backlight 31, In the traveling direction of the light emitted from the backlight 31, a panel layer 1a, a color filter 2, and a surface film 41 are sequentially provided. Here, since the color filter 2 is closest to the surface film 41, the light transmitted through the color filter 2 is immediately incident on the surface film 41 and from the color filter 2 to the incident surface of the surface film 41. It has a structure in which light is difficult to diffuse in between. Therefore, the backlight 31 of the present embodiment may not be configured to emit substantially parallel light. The surface film 41 is the same as the surface film 4 except that the width of the light for one pixel emitted from the surface film 41 is adjusted to the pixel pitch width by adjusting the thickness of the substrate 10. It is a configuration.

  The operation of the color liquid crystal display 200 in the present embodiment will be described. Light emitted from the backlight 31 when the backlight 31 is turned on passes through the panel layer 1 a and then passes through the color filter 2. In the color filter 2, incident light is converted into light of a color corresponding to each subpixel 2 b, and after the light is incident on the surface film 41 and transmitted through the inside, the color image is visually observed in the surface diffusion layer 8. It becomes possible to do.

  At this time, the light emitted from the backlight 31 is incident on the surface film 41 immediately after being transmitted through the color filter 2, and light having a substantially subpixel size is incident on the surface film 41 for each subpixel 2 b. As a result, the light is once condensed by the convex surface portion 5 and light constituting the same pixel is mixed, then diffused by the intermediate diffusion layer 7 and further diffused in the surface diffusion layer 8. In addition, a surface film 41 is provided in which the thickness of the substrate 10 is adjusted so that the pitch of light when entering the surface film 41 and the pitch of light when exiting from the surface diffusion layer 8 have the same size. Therefore, the light emitted from the surface film 41 can be set to the same pitch as the pixel pitch on the color filter 2, and when viewed, the gap between the pixels can be prevented from expanding.

  Therefore, according to the color liquid crystal display 200 of the present embodiment, while the light emitted from the backlight 31 is transmitted through the surface film 41 through the color filter 2, while preventing color mixture between adjacent pixels, Color separation can be prevented. In addition, since the gap between the pixels can be prevented from expanding, the image quality when the image is viewed can be further improved as compared with the first embodiment.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIG. In the third embodiment, the same parts as those in the second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 3, the color liquid crystal display 300 in the present embodiment has the same configuration as the color liquid crystal display 200 of the second embodiment, except that it includes a surface film 42 on which the light absorbing portion 9 is formed.

  The surface film 42 includes the condenser lens 6, the intermediate diffusion layer 7, and the surface diffusion layer 8, and the adjacent film on the light emission side surface of the surface film 42 along the light traveling direction. The light absorption part 9 formed in the rectangular shape is provided. The light absorbing portion 9 may be any member as long as it can absorb the light irradiated by the light absorbing portion 9. For example, a dye containing a light absorbing agent is applied onto the substrate 10 by an inkjet method. It is possible to perform printing by printing, or baking to black by developing the film, forming a slit, and filling the slit with a light absorbent. Also, the shape of the light absorbing portion 9 is not particularly limited. In addition to the light absorbing portion having a rectangular cross section as illustrated, the light absorbing portion having a trapezoidal or V-shaped cross section, or a light absorbing surface. As a specific arrangement pattern of the light absorbing portion 9 when the surface film 41 is viewed from the light emitting side surface toward the backlight 3, each pixel may be a curved light absorbing portion or the like. Examples include a pattern arranged in a grid pattern so as to surround, a pattern arranged in a stripe pattern so as to divide pixels.

  By forming in this way, in the color liquid crystal display 300 of the present embodiment, when the backlight 31 is turned on, the light emitted from the backlight 31 passes through the panel layer 1a and then passes through the color filter 2. Then, the light is incident on the surface film 42. The light is once condensed by the intermediate diffusion layer 7 and then diffused toward the surface diffusion layer 8. At this time, on the surface diffusion layer 8 side of the surface film 42, the light absorbing portion 9 is formed between the adjacent pixels, and the surface film 42 constituting the adjacent pixels beyond the light absorbing portion 9 in the surface film 42. The light is reliably prevented from entering.

  Therefore, according to the color liquid crystal display 300 of the present embodiment, while the light emitted from the backlight 31 is transmitted through the surface film 42, the light constituting the same pixel is mixed and the gap between the pixels is It is possible to prevent enlargement. In addition, since it is possible to reliably prevent color mixing with adjacent pixels due to mixing with the light constituting the adjacent pixels, the image quality when viewing the image can be further improved compared to the second embodiment.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to FIG. Note that in the fourth embodiment, the same portions as those in the third embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 4, the color liquid crystal display 400 according to this embodiment includes a surface film 43, and the surface film 43 includes the condenser lens 6, the intermediate diffusion layer 7, and the substrate 10 surface diffusion layer 8. Yes. The surface film 43 is provided with a concave portion 51 that makes light emitted from the intermediate diffusion layer 7 substantially parallel, and absorbs light between adjacent pixels on the light emission side surface of the intermediate diffusion layer 7. A part 91 is provided.

  The surface film 43 is formed by disposing a concave lens in which a concave surface portion 51 is formed on the surface diffusion layer 8 on the surface opposite to the surface on which the surface diffusion layer 8 is formed on the substrate 10 to form a pixel pitch. After forming the light absorption layer 91 every time, the substrate 10 and the condenser lens 6 can be bonded together via the intermediate diffusion layer 7. The formation method and shape of the light absorbing portion 91 are the same as those of the light absorbing portion 9.

  By forming in this way, in the color liquid crystal display 400 of the present embodiment, when the backlight 31 is turned on, the light emitted from the backlight 31 passes through the panel layer 1a and then passes through the color filter 2. Then, the light is incident on the surface film 43. Then, the light incident on the surface film 43 is once condensed by the concave portion 51 and then diffused toward the surface diffusion layer 8 by the intermediate diffusion layer 7. At this time, the light diffused from the intermediate diffusion layer 7 is refracted by the concave surface portion 51 so as to be substantially parallel to the incident light on the surface film 43, and travels from the concave surface portion 51 toward the surface diffusion layer 8. The light traveling in this way has a uniform directivity at the pixel center and the pixel end. At the same time, the light absorbing portion 91 formed between the intermediate diffusion layer 7 and the adjacent pixel on the light emission side causes the light to enter the surface film 43 constituting the adjacent pixel beyond the light absorbing portion 91 in the surface film 43. Is reliably prevented from entering.

  Therefore, according to the color liquid crystal display 400 of the present embodiment, while the light emitted from the backlight 31 is transmitted through the surface film 43, the color mixture with the adjacent pixels is ensured by mixing with the light constituting the adjacent pixels. It is possible to prevent the gap between the pixels from expanding. Moreover, since the light which comprises the same pixel can be mixed more uniformly, the image quality at the time of visually observing an image can be improved further compared with 3rd Embodiment.

It is sectional drawing showing schematic structure of the color liquid crystal display of 1st Embodiment. It is sectional drawing showing schematic structure of the color liquid crystal display of 2nd Embodiment. It is sectional drawing showing schematic structure of the color liquid crystal display of 3rd Embodiment. It is sectional drawing showing schematic structure of the color liquid crystal display of 4th Embodiment.

Explanation of symbols

100, 200, 300, 400 Color liquid crystal display 1, 11 Liquid crystal panel 1a, 1b Panel layer 2 Color filter 2a Support member 2b Subpixel 3, 31 Backlight 3a Circular prism sheet 3b Light guide plate 3c Reflective sheet 4, 41, 42, 43 Surface film 5 Convex surface part 6 Condensing lens 7 Intermediate diffusion layer 8 Surface diffusion layers 9 and 91 Light absorption part 10 Substrate 51 Concave part

Claims (7)

A surface film disposed on the surface of a color display in which one pixel is formed by a plurality of subpixels,
A convex portion is formed for each pixel on the light incident side surface, and
A surface film comprising: an intermediate diffusion layer formed at a position where light is collected by the convex surface portion; and a surface diffusion layer formed on a light emission side surface.   2. The surface diffusion layer according to claim 1, wherein the surface diffusion layer is disposed at a position where light emitted from the intermediate diffusion layer is diffused to a size of a pixel when entering the surface diffusion layer. Surface film.   The surface film according to claim 1, wherein a light absorbing portion is disposed between adjacent pixels.   The surface film according to any one of claims 1 to 3, wherein a concave surface portion for collimating light emitted from the intermediate diffusion layer is disposed.   A color display, wherein the surface film according to any one of claims 1 to 4 is disposed on a surface.   6. The color display according to claim 5, further comprising a backlight in which light emitted to the surface film is substantially parallel light.   The color display according to claim 5, wherein the surface film is applied to any one of a liquid crystal display, a plasma display, and an organic EL display.

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