JP4829011B2 - Color filter substrate and color liquid crystal display device using the same - Google Patents

Description

  The present invention relates to a color layout when performing color display. In particular, the present invention relates to a color filter substrate, a liquid crystal display device using the same, and a color layout of a display device using a light emitting element such as an EL element.

  As a display device capable of color display, a display device using a non-self-luminous liquid crystal display element, a self-luminous PDP element, or an EL element has been put into practical use. These color display devices perform color display by additive color mixing, for example, using red (R), green (B), and blue (B) sub-pixels as unit pixels. In order to enable additive color mixing, the area of the unit pixel composed of RGB is made as small as possible so that the observer cannot recognize each subpixel separately. In order to improve the color mixing property, it is known that the colored portions are arranged obliquely or in a triangular arrangement, and the shape of the colored portions is triangular or hexagonal (for example, Patent Document 1). See).

  FIG. 11A is a perspective view illustrating a disassembled state of the liquid crystal display device 100 using a color filter, and FIG. 11B is an explanatory diagram illustrating a color arrangement of the color filter. As shown in FIG. 11A, the color filter layer 102 is formed on the lower substrate 101. The color filter layer 102 has RGB colored layers arranged in stripes. A black mask film (BL) is provided between the colored layers and on the outer periphery thereof to prevent light leakage. On the color filter layer 102, a planarizing film 103, a striped transparent electrode 104, and an alignment film (not shown) are provided. In this figure, the RGB colored layer and the transparent electrode 104 are formed to have the same stripe shape. A counter electrode 105 and an alignment film (not shown) are formed on the inner surface of the upper substrate 106. Liquid crystal (not shown) is filled between the upper substrate 106 and the lower substrate 101 to form a liquid crystal panel. Further, a polarizing plate, a light guide plate, and a light source (not shown) are disposed below the lower substrate 101, and a polarizing plate (not illustrated) is disposed on the upper surface of the upper substrate 106. In the liquid crystal display device 100, the amount of light passing through the liquid crystal panel is changed by applying a voltage between the transparent electrode 104 of the lower substrate 101 and the counter electrode 105 of the upper substrate 106 to change the alignment direction of the liquid crystal molecules. The display operation is changed.

  FIG. 11B illustrates a state where the color filter layer 102 of the lower substrate 101 is viewed from above, and a dotted line 107 represents the counter electrode 105 formed on the inner surface of the upper substrate 106. RGB colored layers are periodically arranged. Here, the unit pixel is a portion where the colored layers of RGB three colors and the counter electrode 105 intersect, that is, a region surrounded by a broken line 108. Here, since the transparent electrode 104 formed on the lower substrate and the colored layers of the respective colors have the same shape, the subpixels are regions of the colored layers having the respective colors of RGB surrounded by the broken line 108. A voltage is applied between the transparent electrode 104 and the counter electrode 105 to change the amount of light passing through the colored layer independently for each color (that is, for each subpixel). As a result, an observer who sees the transmitted light can see an additively mixed color image.

  In a liquid crystal display device used for a normal notebook type personal computer or the like, the length L0 or W0 of one side of the unit pixel 108 is 100 to 180 micrometers (μm). The width of the color filter film of the unit pixel 108 is about 30 to 50 μm. Therefore, the area of the unit pixel is about 10,000 to 32400 square μm. Further, assuming that the center line in the longitudinal direction of the colored layer of R is Cr, similarly the center line of G is Cg, and the center line of B is Cb, the distance D between the center lines Cr and Cg is about 30-60 μm, Cr The distance between Cb is about 60 to 120 μm.

A visual acuity of 1.0 by the Langert ring can recognize a gap of 1.5 millimeters (mm) from a position 6 meters (m) away. Therefore, the minimum distance that an observer with a visual acuity of 1.0 can separate at a distance of 50 centimeters (cm) is 125 μm. In the configuration of the color liquid crystal display device described above, when a user with a visual acuity of 1.0 observes 50 cm away from the display screen, the center line Cr of the R colored layer and the B colored layer straddling the G colored layer Since the distance from the center line is about 120 μm at the maximum, each region of each colored layer is not visually recognized separately, but an additive color mixture is observed. Therefore, an image can be viewed without being aware of the colored areas of each color constituting the unit pixel. The same applies to not only a liquid crystal display device but also a plasma display device, an EL display device, or a reflective display device.
JP-A 63-271203

  In the configuration in which the above-described colored layers are arranged in stripes, the additive color mixing effect cannot be effectively obtained if the arrangement pitch of the unit pixels is coarser, for example, exceeding 200 μm. That is, in the color display in the case where the arrangement pitch is coarse and the area of the unit pixel is large (40000 square μm or more), the sub-pixels constituting each color are seen separately by the observer. For this reason, there is a problem in that additive color mixing is not performed in the unit pixel and display quality is deteriorated.

  In addition, although the color mixing property is improved by using the arrangement and shape of the colored portion as in Patent Document 1, in a passive matrix display device in which the transparent electrode needs to have almost the same shape as the colored layer, A shape application electrode cannot be formed.

  In order to solve the above-mentioned problems, a color filter substrate according to the present invention has a color filter in which a plurality of subpixels having different colors constitute one unit pixel and are two-dimensionally arranged in a matrix form on the substrate. Has been. Here, the unit pixel has an area of 40000 square micrometers or more, the sub-pixel has a continuous single plane region and a region having a periodic shape whose line width does not exceed 100 micrometers, A region having a periodic shape of one subpixel and a region having a periodic shape of another subpixel are arranged so as to mesh with each other. Further, the unit pixel has an area of 90000 square micrometers or more and is composed of three or more subpixels having different colors, and the second pixel is interposed between the first color subpixel and the third color subpixel. Color sub-pixels are arranged.

  Further, the unit pixel has an area of 40,000 square micrometers or more, and the subpixel has a continuous single plane area, and the longitudinal center line in the area of one subpixel and the other adjacent to the subpixel. The distance between the longitudinal center line in the region of one subpixel does not exceed 100 micrometers, and the length of the boundary line defining one subpixel and the other subpixel is the unit pixel It comprised so that it might have 1/2 or more of perimeter length. Further, the area of the unit pixel is set to 90000 square micrometers or more, the second subpixel is arranged between the first subpixel and the third subpixel, and the center line in the longitudinal direction of the region of the first subpixel And the length of the boundary line defining the first subpixel and the second subpixel, wherein the distance between the first subpixel and the longitudinal subline of the region of the third subpixel does not exceed 100 micrometers, and The length of the boundary line defining the second subpixel and the third subpixel is configured to be ½ or more of the peripheral length of the unit pixel.

  In the liquid crystal display device of the present invention, the liquid crystal is sandwiched between the color filter substrate having one of the structures described above and the counter substrate. A planarizing film, a transparent electrode, and an alignment film are provided on the striped colored layer. The counter substrate is provided with a counter electrode and an alignment film. In the portion constituting the unit pixel, one of the transparent electrode and the counter electrode and the colored layer are configured to have substantially the same shape.

  In the color display device of the present invention, a plurality of sub-pixels having different display colors are arranged on a display surface for displaying an image to form one unit pixel and are two-dimensionally arranged in a matrix. The subpixel has an area of 40,000 square micrometers or more, the subpixel has a continuous single plane area, and has a periodically shaped area whose line width does not exceed 100 micrometers, and the periodicity of one subpixel The region of the shape and the region of the periodic shape of the other subpixel are arranged so as to mesh with each other. Further, the unit pixel has an area of 90000 square micrometers or more and includes three or more subpixels having different display colors, and the second pixel is interposed between the first color subpixel and the third color subpixel. Added color sub-pixels.

  Alternatively, the unit pixel has an area of 40,000 square micrometers or more, the subpixel has a continuous single plane area, and the longitudinal center line in the area of one subpixel and the one subpixel. The distance between the longitudinal centerline in the region of the other subpixel adjacent to and not exceeding 100 micrometers and the length of the border line defining the one subpixel and the other subpixel Is set to be 1/2 or more of the perimeter of the unit pixel. Further, the area of the unit pixel is set to 90000 square micrometers or more, the second color subpixel is arranged between the first color subpixel and the third color subpixel, and the length of the region of the first color subpixel is increased. The distance between the center line of the direction and the longitudinal center line of the region of the third color sub-pixel does not exceed 100 micrometers and defines the first color sub-pixel and the second color sub-pixel The length of the boundary line and the length of the boundary line that defines the sub-pixels of the second color and the third color are set to be ½ or more of the perimeter of the unit pixel. Such a structure was applied to a self-luminous display device such as electroluminescence.

  As described above, a color filter substrate in which a plurality of subpixels having different colors constitute one unit pixel (unit pixel has an area of 40000 square μm or more), and each subpixel has a line width. It is formed in a periodic shape that does not exceed 100 μm, and the periodic shape region of one subpixel and the periodic shape region of another subpixel are arranged so as to mesh with each other. With such a configuration, even when the area of the unit pixel is large, the observer can visually recognize the display in which additive colors are mixed, so that a reduction in display quality can be prevented.

  In addition, a plurality of subpixels having different colors constitute one unit pixel (area of 40000 square μm or more), and the longitudinal center line in one subpixel region and the other subpixel region. The distance between the center line in the longitudinal direction does not exceed 100 μm, and the length of the boundary between the two subpixels is set to ½ or more of the perimeter of the unit pixel. As a result, the observer does not separate and visually recognize adjacent sub-pixels, and thus observes a plurality of additively mixed sub-pixels at the same time, so that the display of the target color can be recognized.

In the color filter substrate of the present invention, a color filter having a configuration in which a plurality of subpixels having different colors constitute one unit pixel and are two-dimensionally arranged in a matrix is provided on the substrate. The area of the unit pixel is 40000 μm ² or more, and each sub-pixel has a continuous single plane region. Each subpixel has a periodic shape whose line width does not exceed 100 μm in a part of the planar region. And, it has a meshed shape in which the periodic shape of another subpixel enters between the periodic shapes of one subpixel. Thus, when the observer sees the unit pixel, the meshed periodic shape is additively mixed and can be visually recognized as the target color pixel.

  As the substrate, transparent glass, transparent resin, or the like is used. The color filter substrate has a colored layer formed on the surface of a transparent substrate. As the colored layer, a polyimide film in which a colored pigment is dispersed, a photosensitive resin film using an acrylic resin or the like containing a colored pigment, or a film previously deposited on an electrode having a subpixel shape by electrodeposition is used. . In the case of a polyimide film or the like, a polyimide film in which a pigment of a predetermined color is dispersed is formed on a transparent substrate, and a colored layer having a predetermined shape is formed by a photolithography process using a resist or the like. This is repeated for each color to form a color filter having a plurality of colored layers. In the case of using a touristic resin, a touristic resin in which a pigment colored in a predetermined color is dispersed is formed on a transparent substrate, and a colored layer having a predetermined shape is formed by a photolithography process. This is repeated for each color to form a color filter. In the case of electrodeposition, a transparent electrode is previously patterned in the shape of a subpixel, and a film in which a pigment is dispersed is deposited thereon by electrodeposition. An electrodeposition color filter is formed by repeating the color.

  As the color of the color filter, when the sub-pixel has two colors, a color having a complementary color relationship can be used. For example, a combination of green (G) and magenta (M), cyan (C) and red (R) is used. When the sub-pixel has three colors, a combination of red (R), green (G), and blue (B) or a combination of magenta (M), yellow (Y), and cyan (C) may be used. it can. For these colors, white (W) can be obtained by additive color mixing. Further, other colors can be added, or MYC colors can be added to RGB.

  In the case of a color filter substrate, a black filter (BM) can be formed between two subpixels to prevent light leakage and improve color purity. Note that a light shielding region such as a black filter provided between the subpixels is not included in the subpixels. The sub-pixel area is an area used for recognizing or detecting changes in characters and images by observing the amount of light that has passed through the color filter substrate for display devices, light receiving devices, etc., or detecting the amount of light that has passed. And Therefore, the fixed light-shielding region for simply improving the color purity is not included in the subpixel even if the area is large.

The area of the unit pixel is 90000 μm ² or more, and has subpixels of 3 colors or more. A second color sub-pixel is arranged between the first color sub-pixel and the third color sub-pixel. That is, the first color sub-pixel and the third color sub-pixel are separated via the second color sub-pixel. Each of these subpixels has a periodic shape whose line width does not exceed 100 μm, and the periodic shapes of the first color subpixel and the second color subpixel mesh with each other. Further, the periodic shapes of the second color sub-pixels and the third color sub-pixels also have a meshed shape. As a result, when the observer sees the unit pixel, the first color pixel and the second color pixel, the second color subpixel and the third color subpixel, the first color subpixel and the third color subpixel are displayed. Pixels are also additively mixed and the target display color can be visually recognized.

In the color filter substrate of the present invention, a color filter having a configuration in which a plurality of subpixels having different colors constitute one unit pixel and are two-dimensionally arranged in a matrix is provided on the substrate. The area of the unit pixel is 40000 μm ² or more, and each sub-pixel has a continuous single plane region. Furthermore, the distance between the longitudinal centerline in the region of one subpixel and the longitudinal centerline in the region of another subpixel adjacent to the one subpixel does not exceed 100 μm. In addition, the length of the boundary line defining this sub-pixel and other sub-pixels is set to be ½ or more of the peripheral length of the unit pixel. That is, it is not sufficient that the thin stripe-shaped subpixels are arranged close to each other in the unit pixel region, and the regions of the subpixels are indented or bent into other subpixel regions. Is required. As a result, when the observer sees the unit pixel, the adjacent sub-pixel cannot be separated, and the color mixed by the additive color mixture is visually recognized.

In addition, the area of the unit pixel is 90000 μm ² or more, and the pixel has three or more colors of subpixels. A second color sub-pixel is arranged between the first color sub-pixel and the third color sub-pixel. That is, the first color sub-pixel and the third color sub-pixel are separated via the second color sub-pixel. The distance between the longitudinal center line of the first color sub-pixel region and the longitudinal center line of the third color sub-pixel region does not exceed 100 μm. As a result, the viewer does not view the three subpixels separately. Further, the length of the boundary line defining the first color sub-pixel and the second color sub-pixel, and the length of the boundary line defining the second color sub-pixel and the third color sub-pixel are: , Having at least half of the perimeter of the unit pixel. As a result, the first color sub-pixel region and the second color sub-pixel region, and the second color sub-pixel region and the third color sub-pixel region are engaged or bent. become. As a result, additive color mixing is further promoted, and display quality can be improved.

  A liquid crystal display device using the color filter substrate having the above-described configuration will be described. A counter substrate is provided with a gap of about several μm to 10 μm from the color filter substrate to constitute a cell, and a liquid crystal layer is provided in this gap. Further, an optical film such as a polarizing plate is disposed so as to sandwich the cell, and an illumination device such as a backlight is disposed as necessary. In addition, an electrode for applying a voltage to the liquid crystal layer is provided. The electrodes used in the passive liquid crystal display device include a transparent electrode provided on the filter substrate and a counter electrode provided on the counter substrate. Since a voltage is applied to the liquid crystal at the intersection of the transparent electrode and the counter electrode, this intersection functions as a pixel. For example, when color display is performed using three colors of RGB, this pixel is divided into three parts, that is, three sub-pixels. One of the transparent electrode and the counter electrode is a scanning electrode, and the other is a signal electrode. Usually, the signal electrode has a pattern that is almost the same shape as the color pattern of the colored layer. In the case of the passive matrix type, for example, the signal electrode is formed as a continuous electrode shape penetrating in the vertical direction so that the same signal is supplied to pixels adjacent in the vertical direction. Therefore, the color pattern of the colored layer needs to have the following characteristics. For example, when the signal electrodes are continuously formed in the vertical direction, the subpixels of each color are formed so that there are regions on both the upper side and the lower side of the unit pixel. The upper side is connected to the colored layer of the upper unit pixel, and the lower side is connected to the colored layer of the lower unit pixel. In this way, the subpixels of each color are formed so as to cross part of the upper side and the lower side constituting the unit pixel. Otherwise, a wiring connecting to the upper (or lower) unit pixel must be provided in the gap between the unit pixels adjacent in the horizontal direction, and the aperture ratio is reduced.

  The transparent electrode is provided between the substrate and the colored layer or on the colored layer. The transparent electrode is formed by depositing ITO (indium tin oxide) or the like by sputtering or the like. When the color filter substrate is used in a reflective display device, a metal electrode that reflects light is formed between the substrate and the colored layer instead of a transparent electrode.

Furthermore, the display device of the present invention that displays using light emitting elements of a plurality of colors that emit specific colors will be described. That is, the display device includes a display surface in which a plurality of sub-pixels having different display colors constitute one unit pixel and are two-dimensionally arranged in a matrix. The area of the unit pixel is 40000 μm ² or more, each subpixel has a continuous single plane region, and is formed in a periodic shape whose line width does not exceed 100 μm. Furthermore, it is a meshed shape in which the periodic shape of another subpixel enters between the periodic shapes of one subpixel. Thus, when the observer sees the unit pixel, the meshed periodic shape is additively mixed and can be visually recognized as a pixel of the target color.

Further, the area of the display surface made up of unit pixels is 90000 μm ² or more, and there are three or more subpixels having different colors, and the second color is between the first color subpixel and the third color subpixel. This is a pattern in which the sub-pixels are arranged. Each of these sub-pixels has a periodic shape whose line width does not exceed 100 μm, and the periodic shape of the first-color sub-pixel and the second-color sub-pixel mesh with each other. The periodic shapes of the pixel and the third color sub-pixel are also meshed. As a result, when the observer looks at the display surface made up of unit pixels, the first color sub-pixel and the second color sub-pixel, the second color sub-pixel and the third color sub-pixel, The sub-pixel and the sub-pixel of the first color are additively mixed and can be visually recognized as a pixel of the target color.

Alternatively, the area of the unit pixel is 40000 μm ² or more, and the sub-pixel has a continuous single plane region. Furthermore, the distance between the longitudinal centerline in the region of one subpixel and the longitudinal centerline in the region of another subpixel adjacent to this one subpixel does not exceed 100 μm. Thereby, when an observer observes this unit pixel, this adjacent sub pixel can be visually recognized as a pixel mixed by additive color mixing. In addition, the length of the boundary line that defines the one subpixel and the other one subpixel is ½ or more of the peripheral length of the unit pixel. As a result, additive color mixing is further promoted.

Alternatively, the unit pixel has an area of 90000 μm ² or more and 3 or more subpixels having different colors. A second color sub-pixel is arranged between the first color sub-pixel and the third color sub-pixel. That is, the first color sub-pixel and the third color sub-pixel are separated via the second color sub-pixel. The distance between the longitudinal center line of the first color sub-pixel region and the longitudinal center line of the third color sub-pixel region does not exceed 100 μm. As a result, when the observer looks at the unit pixel, the colors of the three sub-pixels are additively mixed and can be visually recognized as pixels of the target color. Further, the length of the boundary line defining the first color sub-pixel and the second color sub-pixel, and the length of the boundary line defining the second color sub-pixel and the third color sub-pixel are: , Having at least half of the perimeter of the unit pixel. As a result, a region of the first color subpixel and a region of the second color subpixel are formed, and similarly, a region of the second color subpixel and a region of the third color subpixel are formed. The region has a meshing shape, and additive color mixing is further promoted.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  The shape and arrangement of the color filter substrate of this embodiment or the colored layer of the display device will be described with reference to the plan view of FIG. As illustrated, the unit pixel UP1 and the same unit pixel UP2 as the unit pixel UP1 are arranged in parallel. The unit pixel UP1 has a rectangular shape with a length of 200 μm (L0) and a width of 222 μm (W0). A plurality of unit pixels UP1 are arranged in the X direction and the Y direction, and configured as a matrix. The unit pixel UP1 includes a first color subpixel 2 and a second color subpixel 3 having different colors. For example, the first color subpixel 2 is a green colored layer or light emitting portion, and the second color subpixel 3 is a magenta colored layer or light emitting portion. Each subpixel has a single continuous flat area, and the first color subpixel 2 and the second color subpixel 3 are defined by a boundary 4. The boundary region 4 is a region having a black color filter or a black display color, but is not limited thereto. The center line in the longitudinal direction of the boundary region 4 is defined as the boundary center line. A subpixel is a region in which a colored layer or a light emitting unit is used for a display device or the like, and an observer contributes to recognizing a change in characters or images by observing a change in brightness or saturation of the subpixel. It is said that.

The first color subpixel 2 has a rectangular region G1 having a length of 200 μm (L0) and a width of 33 μm (W1), a rectangular region G2 having a length of 134 μm (L2) and a width of 33 μm (W3), and a long length. And a rectangular region G3 having a width of 134 μm (L2) and a width of 33 μm (W5). The second color subpixel 3 includes a rectangular region M1 having a length of 200 μm and a width of 33 μm (W6), a rectangular region M2 having a length of 134 μm (L2) and a width of 33 μm (W4), and a length. And a rectangular region M3 having a width of 134 μm (L2) and a width of 33 μm (W2). The area (L0 × W0) of the unit pixel UP1 is 44400 μm ² , and thus is 40000 μm ² or more. The widths (W1 to W6) of the regions G1, G2 and G3 of the first subpixel 2 and the regions M1, M2 and M3 of the second subpixel 3 are all equal to 33 μm and do not exceed 100 μm. The regions G1, G2, and G3 of the first subpixel 2 have a periodic shape with a pitch of 66 μm (P1) with respect to the X direction, and similarly, the regions M1, M2, and M3 of the second subpixel 3 are in the X direction. In contrast, it has a periodic shape with a pitch of 66 μm (P2) and is arranged to mesh with each other. Furthermore, in this embodiment, the areas of the first color subpixel 2 and the second color subpixel 3 are the same.

It is not necessary to limit to the values of L0, M0, L1 to L3, and W1 to W6 described above. The area of the unit pixel UP1 may exceed 40000 μm ² , and the periodic shape of each subpixel may be a shape that meshes with each other without exceeding 100 μm. For example, the shape is similar to the shape shown in FIG. 1, and W0 may be about 600 μm, or L0 may be further increased. In this embodiment, the number of repetitions of the periodic shape of each subpixel is set to 3, but a larger number of repetitions may be used. In that case, W0 can be 600 μm or more. Further, the areas of the first color subpixel 2 and the second color subpixel 3 do not have to be the same.

  In addition, a center line with respect to the longitudinal direction in each region of the first color sub-pixel 2 is defined as a center line Cg, and a center line with respect to the longitudinal direction in each region of the second color sub-pixel is defined as a center line Cm. The distance between the center line Cg in the region G1 and the center line Cm of the region M3 of the second color subpixel 3 is 33 μm and does not exceed 100 μm. Similarly, the distance between the center line Cg of the region G2 and the center line Cm of the region M3 or the region M2 in the first color subpixel 2 and the second color subpixel 3, and the centerline Cg and the region M3 of the region G3. Alternatively, the distance from the center line Cm of the region M1 is 33 μm and does not exceed 100 μm. Furthermore, when the width of the boundary region 4 is 4 μm, the length of the boundary center line is 1000 μm (Lx), which is larger than ½ of the peripheral length of the unit pixel UP1 844 μm (Ls = 2 (L0 + W0)).

In the color layout 1 shown in FIG. 1, W1 to W6 have the same length, but may be different from each other. Also, the dimension of L3 in the figure may be changed between the portion M2 and the portion M3. Furthermore, the color layout 1 is not limited to a matrix-like arrangement in which the unit pixels UP1 and the unit pixels UP2 are arranged like a grid in the X direction and the Y direction, but may be an arrangement shifted from each other in the X direction or the Y direction. In the first color sub-pixel 2 and the second color sub-pixel 3, there are three periodic shapes, but a plurality of periodic shapes may be used. This is because additive color mixing is promoted as the number of regions having a periodic shape increases. The areas of the first color subpixel 2 and the second color subpixel 3 may not be the same. In the color layout 1 shown in FIG. 1, generally, the distance between the center line of each region of the first color sub-pixel 2 and the center line of each region of the second color sub-pixel 3 does not exceed 100 μm. Any unit pixel UP1 may be used as long as it has an area of 40000 μm ² or more and satisfies the formula (1).
4L2 + W0 ≧ 2 (W1 + W4) (1)
The color filter substrate can be produced by forming a photosensitive resin in which a color pigment is dispersed on a transparent substrate. Specifically, first, a photosensitive resin made of an acrylic resin in which a pigment of a predetermined color is dispersed is applied on a glass substrate. Next, exposure is performed using a mask having the shape of the first color sub-pixel. Next, the exposed photosensitive resin is developed to leave the first color subpixel 2 on the glass substrate. Next, a photosensitive resin in which a pigment of a color different from that of the first color subpixel is dispersed is applied, and the second color subpixel is left on the glass substrate by the same exposure and development process as described above. Next, a photosensitive resin in which a black pigment is dispersed is applied, and exposure / development processing is performed in the same manner to form a boundary region 4 between the first color subpixel 2 and the second color subpixel 3 without a gap. To do. In addition to the photosensitive resin, a color filter film in which a pigment of a predetermined color is dispersed in a polyimide film is applied on a transparent substrate, and a first color subpixel 2 is formed by a photolithography process and an etching process. May be repeated to form the second color sub-pixel 3. In addition, a transparent electrode for electrodeposition may be formed on a glass substrate, and a color filter may be formed by sequentially repeating electrodeposition for each color.

  Moreover, this colored layer can be formed using a self-luminous organic EL element. A transparent electrode such as ITO is deposited on a transparent substrate made of glass by a vacuum evaporation method or the like. Next, the first subpixel is patterned by a photolithography process and an etching process. Next, an electrode including a hole injection layer, a hole transport layer, a light emitting layer doped with a predetermined dopant, an electron transport layer, and a cathode is sequentially formed by an evaporation method or the like. Next, patterning is performed by a photolithography process and an etching process to form a first color subpixel shape. The second color sub-pixel is formed by the same process.

  Further, a PDP element having a different emission color can be formed in each subpixel instead of the EL element. When a PDP element is used as the display surface, a data electrode is formed on the lower substrate along the center line of each subpixel, and an insulating film is formed thereon. A barrier having a predetermined height is formed along the boundary region 4 between the first color subpixel 2 and the second color subpixel 3. Next, a phosphor that emits the color of the subpixel is applied to the side surface of the partition wall. The phosphor is also applied on the insulating film in the subpixel region surrounded by the barrier ribs. An upper transparent substrate on which a transparent electrode is formed in a direction orthogonal to the data electrode is bonded, and a gas for plasma emission is sealed between the lower transparent substrate and the upper transparent substrate to form a display device. Further, instead of the self-luminous element, an electrochromic element or an electrophoretic display element using an electrolyte such as WO3 can be used.

FIG. 2 schematically shows a plan view of the two-color color filter substrate (color layout 5 of the colored layer) of this example. As shown in the figure, a first color subpixel 6 and a second color subpixel 7 having different colors are formed in the unit pixel UP1. The first color sub-pixel 6 and the second color sub-pixel 7 are drawn through the boundary region 8. The unit pixel UP1 has a rectangular shape with a length L0 and a width W0, and has an area of 40000 μm ² or more. Each of the first color subpixel 6 and the second color subpixel 7 has a single continuous plane area. The first color sub-pixel has a region G1 having a length L0 and a width W1, and a region G2 having a length L2 and a width W3. Similarly, the second color sub-pixel 7 has a region M1 having a length L0 and a width W4, and a region M2 having a length L2 and a width W2. Here, W1 to W4 have the same length and do not exceed 100 μm. The regions G1 and G2 of the first color subpixel 6 have a periodic shape with a pitch P1 with respect to the X direction. Similarly, the region M1 and the region M2 of the second color subpixel 7 have a periodic shape with a pitch P2 with respect to the X direction. The areas of the first color sub-pixel 6 and the second color sub-pixel 7 have shapes that mesh with each other. Therefore, when the observer observes the unit pixel, the first color sub-pixel 6 and the second color sub-pixel 7 are not recognized separately, and additive color mixing is performed.

The distance between the center line C1 of the region G1 of the first color subpixel 6 and the center line Cm of the region M2 of the second color subpixel 7 does not exceed 100 μm. Similarly, the distance between the center line Cg of the region G2 of the first color subpixel 6 and the region M2 or the region M1 of the second color subpixel 7 does not exceed 100 μm. The length Lx of the center line of the boundary region 8 between the first color subpixel 6 and the second color subpixel 7 is Lx = (L0 + W0) + 2L2 + (W0-2W1-2W4), and the length around the unit pixel UP1. And Ls = 2 (L0 + W0) ½ or more. Therefore, even if the lengths of W1 to W4 are different from each other, the longitudinal center lines of the regions G1 and G2 of the first color subpixel 2 and the regions M1 and M2 of the second color subpixel 3 The distance from the center line in the longitudinal direction does not exceed 100 μm, and the length of the boundary line that defines the first color subpixel 2 and the second color subpixel 3 is not less than ½ of the length around the unit pixel UP1. Can be satisfied. In the color layout 5 shown in FIG. 2, generally, the distance between the center line of each region of the first color subpixel 2 and the center line of each region of the second color subpixel 3 does not exceed 100 μm. As long as the area of the unit pixel UP1 is 40000 μm ² or more and the expression (2) is satisfied.
2L2 + W0 ≧ 2 (W1 + W4) (2)
Further, the first subpixel 6 in the unit pixel UP1 has regions G1, G2,... Gn (n is an integer of 2 or more), and the second color subpixel 7 has regions M1, M2,. , The distance between the center lines of the adjacent regions of the first color subpixel 6 and the second color subpixel 7 does not exceed 100 μm, the area of the unit pixel UP1 is 40000 μm ² or more, and the formula (3 ).
2 (n-1) L2 + W0> 2 (W1 + W4) (3)

FIG. 3 is a plan view schematically showing the color filter substrate (color layout 10 of the colored layer) of the present embodiment. As shown in the drawing, the unit pixel UP1 has three sub-pixels: a red first sub-pixel 11r, a green second sub-pixel 11g, and a blue third sub-pixel 11b. Unit pixels UP1 is a square 300μm length L0 and a width W0, respectively, the area (L0 × W0) is 90000Myuemu ^2, constitutes a matrix arranged in the X and Y directions. A second subpixel 11g is arranged between the first subpixel 11r and the third subpixel 11b. The first subpixel 11r and the second subpixel 11g are demarcated by the boundary area 12, and the second subpixel 1g and the third subpixel 11b are demarcated by the boundary area 13, respectively.

  The first sub-pixel 11r includes a region R1 having a width of 50 μm (L2) and a length of 225 μm (W2 + W3), and a region R2 having a width of 50 μm (L6) and a length of 225 μm (W2 + W3). Therefore, the widths of the regions R1 and R2 do not exceed 100 μm and form a periodic shape with a pitch of 150 μm (L3 + L4 + L5 + L6). The second subpixel 11g includes regions G1, G2, G3, and G4 having a width of 25 μm, and has a periodic shape with a pitch of 75 μm (P1). The third subpixel 11b includes a region B1 and a region B2 having a width of 50 μm (L4 and L8) and a length of 225 μm (W3 + W4). Accordingly, the widths of the regions B1 and B2 do not exceed 100 μm and form a periodic shape with a pitch of 150 μm (L5 + L6 + L7 + L8). The periodic shapes of the subpixels mesh with each other. As a result, the observer cannot separate the first sub-pixel 11r and the second sub-pixel 11g, and the second sub-pixel and the third sub-pixel 11b of the unit pixel UP1, and the additively mixed color Will be observed.

The length and width of the present embodiment are not limited, and the areas of the first subpixel 11r, the second subpixel 11g, and the third subpixel 11b may not be the same. The area of the unit pixel UP1 may be 90000 μm ² or more, and each subpixel may have a periodically shaped region that does not exceed 100 μm. For example, in the case of the color layout 10 shown in the present embodiment, the length L0 of the unit pixel UP1 may be increased, or the number of regions having a periodic shape may be increased. Further, the width W0 can be any width satisfying an area of 90000 μm ² or more. Furthermore, the color is not limited to RGB, and MYC colors may be used, or other colors may be used.

  Each distance between the longitudinal center line Cr in the regions R1 and R2 of the first subpixel 11r and the longitudinal centerline Cb in the regions B1 and B2 of the third subpixel 11b is 75 μm. In addition, the length of the center line of the boundary region 12 and the length of the center line of the boundary region 13 are 1200 μm, which is ½ or more of the length 1200 μm around the unit pixel UP1. In the present embodiment, three regions of the first subpixel 11r, the second subpixel 11g, and the third subpixel 11b are included within a width of 75 μm. As a result, the observer does not separately observe the first subpixel 11r, the second subpixel 11g, and the third subpixel 11b of the unit pixel UP1, but observes the additively mixed color. Become.

In this case, the shape is not limited to the above-described shape. For example, the length L0 may be expanded to 395 μm, and the width W0 may be within a range where the area of the unit pixel UP1 is 90000 μm ² or more. It can be any value. Further, the lengths L1, L3, L5, and L7 and the widths W1, W2, W4, and W5 may not be the same. Similarly, the lengths L2, L4, L6, and L8 need not be the same.

In the present embodiment, as shown in FIG. 3, the first sub-pixel 11r has two regions R1 and R2, and the third sub-pixel 11b has two regions B1 and B2. A condition when the number is m (m is an integer of 2 or more) will be described. Also in this case, the distance between the center line of each convex region of the first subpixel 11r and the center line of each convex region of the third subpixel 11b adjacent via the second subpixel 11g is Do not exceed 100 μm. The area of the unit pixel UP1 is 90000 μm ² or more. The length of the center line of the boundary region 12 is Lx1 = L0 + 2m (W0-W1-W4-W5), and the length of the center line of the boundary region 13 is Lx2 = L0 + 2m (W0-W1-W2-W5). In addition, since each Lx1 and Lx2 needs to have half of the periphery of the unit pixel UP1, that is, (L0 + W0) or more, the equations (4) and (5) may be satisfied.
W0 ≧ 2m (W1 + W4 + W5) / (2m−1) (4)
W0 ≧ 2m (W1 + W2 + W5) / (2m−1) (5)

  FIG. 4 is a plan view schematically showing the color filter substrate (color layout 15 of the display body) of the present embodiment. As illustrated, the unit pixel UP1 includes a first sub-pixel 16a, a second sub-pixel 16b, a third sub-pixel 16c, and a fourth sub-pixel 16d that have different colors. The unit pixel UP1 is a square having a length L0 and a width W0 of 320 μm, and its area (L0 × W0) is about 0.1 square millimeters (mm). The unit pixel UP1 is arranged in the X and Y directions to form a matrix. It is composed. In each subpixel, a second subpixel 16b and a third subpixel 16c are arranged between the first subpixel 16a and the fourth subpixel 16d. The first subpixel 16a and the second subpixel 16b are defined by the boundary region 17, the second subpixel 16b and the third subpixel 16c are defined by the boundary region 18, and the third subpixel 16c and the fourth subpixel 16d are defined by Each border area 19 is drawn.

  The width of each subpixel is 20 μm except for the areas A1 and A2 of the first subpixel 16a and the areas D1 and D2 of the fourth subpixel 16d. The regions A1 and A2 of the first subpixel 16a and the regions D1 and D2 of the fourth subpixel 16d have the same shape with a width of 40 μm (L1) and a length of 240 μm (W2), and each is a periodic region with a pitch of 160 μm. Is configured. In addition, the regions B1 and B2 and the regions B3 and B4 of the second subpixel 16b form a periodic shape with a pitch of 160 μm, and each have a width of 20 μm. Further, the regions C1 and C2 and the regions C3 and C4 of the third subpixel 16c form a periodic shape with a pitch of 160 μm, and each have a width of 20 μm. Accordingly, each sub-pixel has a periodic shape whose width does not exceed 100 μm, and has a shape that meshes with each other. As a result, the viewer can select the first subpixel 16a and the second subpixel 16b, the second subpixel 16b and the third subpixel 16c, and the third subpixel 16c and the fourth subpixel of the unit pixel UP1. The additively mixed color can be observed without separately viewing 16d.

The size of L0 and W0 of the unit pixel UP1 and the width of each subpixel may not be the above numerical values. For example, the side L0 of the unit pixel UP1 may be enlarged to about 1.5 mm, or the unit pixel UP1 is increased by increasing the number of regions forming the convex portions of the first subpixel 16a and the fourth subpixel 16d. Can be expanded to any size. Similarly, the width W0 can take any value that satisfies the area of the unit pixel UP1 of 90000 μm ² or more. The unit pixel UP1 has the same shape repeated in the Y direction, and the range of the unit pixel UP1 indicated by the broken line in the Y direction may be divided at any position. In this embodiment, the area of each sub-pixel is the same area, but is not limited to this.

  Each distance between the longitudinal center line Ca of the regions A1 and A2 of the first subpixel 16a and the longitudinal centerline Cc of the regions C2, C3, and C4 of the third subpixel 16c is 50 μm. . Similarly, each distance between the longitudinal center line Cd of the regions D1 and D2 of the fourth subpixel 16d and the longitudinal centerline Cb of the regions B1, B2, B3, and B4 of the second subpixel 16b is 50 μm. It is. Further, the length of the boundary regions 17, 18 and 19 is 1280 μm, and has a length equal to or more than ½ of the length of 1280 μm around the unit pixel UP1. Accordingly, at least three subpixels are included in the range of 50 μm in width, and the observer observes the additively mixed color without observing each subpixel separately even when observing the unit pixel UP1. It will be.

Note that the present invention is not limited to the above-described shapes, and for example, the side L0 of the unit pixel UP1 can be enlarged to a size of 610 μm. Further, the width W0 can be any width that satisfies the area of the unit pixel UP1 of 90000 μm ² or more. Further, the width and length L1 of each sub-pixel need not be the same.

In FIG. 4, the first sub-pixel 16a has areas A1 and A2, and the fourth sub-pixel 16d has areas D1 and D2, and each sub-pixel has q (q is an integer of 2 or more). Will be described. In this case, the distance between the center line of each convex portion of the first subpixel 16a and the centerline of each region of the third subpixel 16c adjacent via the second subpixel 16b exceeds 100 μm. Not there. The area of the unit pixel UP1 is 90000 μm ² or more. Also, if the width of the first subpixel 16a in the Y direction is W1, and similarly the widths of the second subpixel 16b, the third subpixel 16c, and the fourth subpixel 16d in the Y direction are W3, W4, and W5, The length of the center line of each of the boundary regions 17, 18, and 19 is Lx3 = L0 + 2q (W0−W1−W3−W4−W5), and has a half of the circumference of the unit pixel UP1, that is, (L0 + W0) or more. Therefore, it is sufficient to satisfy the expression (6).
W0 ≧ 2q (W1 + W3 + W4 + W5) / (2q−1) (16)

FIG. 5 is a plan view showing the color filter substrate (color layout 20 of the colored layer) of this example. As illustrated, the unit pixel UP1 includes a red first sub-pixel 21r, a green second sub-pixel 21g, and a blue third sub-pixel 21b. Unit pixels UP1 is the length 300 [mu] m (L0), a width 320 .mu.m (W0), the area is 96000μm ^2. The first subpixel 21r includes a region R1 having a width of 40 μm (W1) and a length of 300 μm (L0), and a rectangular region R2 having a width of 100 μm (L2) and a length of 160 μm (W3). The second subpixel 21g has a rectangular region G1 with a width of 30 μm (L1) and a length of 200 μm (W2 + W3), a rectangular region G2 with a length of 100 μm (L2) and a width of 40 μm, and a length of 200 μm (W2 + W3). And a rectangular region G3 having a width of 70 μm (L3) and a rectangular region G4 having a length of 100 μm (L4) and a width of 40 μm (W2). The third sub-pixel 21b has a rectangular region B1 having a length of 300 μm (L0) and a width of 40 μm (W4), and a rectangular region B2 having a length of 160 μm (W3) and a width of 100 μm (L4). . Therefore, in this embodiment, none of the sub-pixels has a region having a periodic shape in the unit pixel UP1.

  Here, the distances between the center line Cr in the longitudinal direction of the regions R1 and R2 of the first subpixel 21r and the regions G4 and G3 and the region G1 of the second subpixel 21g are respectively 40 μm (X2) and 85 μm ( Y2) and 65 μm (Y1). Similarly, the distance between the longitudinal center line Cg of the regions G2 and G3 of the second subpixel 21g and the longitudinal centerline Cb of the regions B1 and B2 of the third subpixel 21b is 40 μm (X1 ) And 85 μm (Y3). Further, the length of the center line of the boundary region 22 between the first subpixel 21r and the second subpixel 21g and the centerline of the boundary region 23 between the second subpixel 21g and the third subpixel 21b. Each of the lengths is 620 μm, and the length of the circumference of the unit pixel UP1 is 1/2 or more of 1240 μm. As a result, the observer did not separately observe the first subpixel 21r and the second subpixel 21g or the second subpixel 21g and the third subpixel 21b of the unit pixel UP1, and the additive color mixing was performed. You will observe the color.

In the present invention, the shape is not limited to the above-described shapes. For example, the side L0 of the unit pixel UP1 may be further enlarged, and the width W0 is within a range where the area of the unit pixel UP1 satisfies 40000 μm ² or more. Can be any value. Further, the shape can be reduced in a range where the area of the unit pixel UP1 satisfies 40000 μm ² . Further, the color of each subpixel is not limited to RGB, and YMC or other colors may be used.

FIG. 6 is a plan view schematically showing the color filter substrate (color layout 25 of the colored layer) of this example. As illustrated, the unit pixel UP1 includes a red first sub-pixel 26r, a green second sub-pixel 26g, and a blue third sub-pixel 26b. Unit pixels UP1, the length 300 [mu] m (L0), width 300 [mu] m (W0), having an area 90000μm ^2. The first sub-pixel 26r has a periodic shape of convex regions R1, R2 and R3 having a width of about 50 μm (L2) and a length of about 100 μm (W2). The second subpixel 26g has a periodic shape of convex regions G1 to G6 having a width of about 50 μm (L1, L2) and a length of about 100 μm (W2, W3). The third sub-pixel 26b has a periodic shape of convex portions having a width of about 50 μm (L1) and a length of about 100 μm (W3). The pitch of the periodic shape of each subpixel is 100 μm (P1). The periodic shapes of these adjacent convex portions mesh with each other. Accordingly, the observer observes the additively mixed color without individually observing the regions R1 to R3 of the first subpixel 26r and the regions G1 to G3 of the second subpixel 26g of the unit pixel UP1. become. The same applies to the meshed periodic shape between the second subpixel 26g and the third subpixel 26b.

Note that the length and width are not limited to the above, and the Y direction and the X direction can be further narrowed or shortened or expanded in the range where the area of the unit pixel UP1 satisfies 40000 μm ² or more. You can also. Furthermore, the number of periodic shapes can be increased, and the length in the Y direction can be set to an arbitrary length. The same applies to the X direction.

  The distance between the center lines of the regions R1, R2, and R3 of the first subpixel 26r and the center lines of the regions G1, G2, and G3 of the second subpixel 26g is 50 μm. The distance between the center lines of the regions G4, G5, and G6 of the second subpixel 26g and the regions B1, B2, and B3 of the third subpixel 26b is 50 μm. The length of the center line of the boundary region 27 between the first subpixel 26r and the second subpixel 26g and the length of the centerline of the boundary region 28 between the second subpixel 26g and the third subpixel 26b are both approximately 780 μm, which is longer than 600 μm (L0 + W0), which is ½ of the length around the unit pixel UP1. As a result, the observer separates the convex portion of the first subpixel 26r from the convex portion of the second subpixel 26g, and the convex portion of the second subpixel 26g and the convex portion of the third subpixel 26b. Therefore, the additively mixed color is observed without being visually recognized.

In FIG. 6, the first sub-pixel 26r and the third sub-pixel 26b have three convex portions, and the second sub-pixel 26g is located between them, but both the first sub-pixel 26r and the third sub-pixel 26b are included. A condition when v (v is an integer of 2 or more) is described. In this case, the distance between the center lines of the regions R1, R2 and R3 of the first subpixel 26r and the regions G1, G2 and G3 of the second subpixel 26g should not exceed 100 μm, The distance between the center lines of the regions G4, G5 and G6 of the pixel 26g and the regions B1, B2 and B3 of the third subpixel 26b should not exceed 100 μm. The area of the unit pixel UP1 is 40000 μm ² or more. Further, the length of the center line of the boundary region 27 is approximately L0 + 2v (0.8 × W2), and the length of the center line of the boundary region 28 is approximately L0 + 2v (0.8 × W3). Since these lengths are required to be ½ or more of the circumference of the unit pixel UP1, that is, (L0 + W0) or more, the equations (7) and (8) may be satisfied.
2v (0.8 × W2) ≧ W0 (7)
2v (0.8 × W3) ≧ W0 (8)
FIG. 7 is a cross-sectional view schematically showing a liquid crystal display device 30 using a color filter substrate having the color layout 25 shown in FIG. In FIG. 7 and FIG. 6, the same code | symbol represents the same structure or function. The liquid crystal display device 30 includes a liquid crystal panel 42 and a backlight unit 43. The liquid crystal panel 42 includes a color filter substrate 44, a counter substrate 37 having a counter electrode 36 formed on the inner surface, a liquid crystal layer 35 sandwiched between the two substrates, and two polarizations provided on the outer surfaces of the two substrates. Plates 38 and 39 are provided. The color filter substrate 44 has the color layout 25 shown in FIG. 6, and particularly shows a cross section of a portion XX ′ in FIG. The color filter substrate 44 includes a transparent substrate 31 such as glass, a colored layer 26 formed thereon, a planarization layer 33 and a transparent electrode 34 formed thereon. An alignment film (not shown) is formed so as to cover the transparent electrode and the counter electrode. The colored layer 26 includes a colored layer 26r in which a red pigment is dispersed, a colored layer 26g in which a green pigment is dispersed, a colored layer 21b in which a blue pigment is dispersed, and a light shielding film 27 in which a black pigment is dispersed. . Each colored layer is processed and formed into a predetermined pattern by applying an acrylic photosensitive resin in which a pigment is dispersed on the transparent substrate 31, performing exposure and development after drying. The flattening film 33 is formed of an acrylic resin, and flattens the unevenness due to the film thickness difference between the colored layers 26r, 26g, and 26b and the light shielding film 27. The liquid crystal layer 35 includes a gap material 42 for maintaining the color filter substrate 44 and the counter substrate 37 at a predetermined interval.

  The pattern of each colored layer 21r, 21g, and 21b and the pattern of the counter electrode 36 on the counter substrate 37 have the same shape. That is, the counter electrode 36 has substantially the same planar shape as each of the subpixels 26r, 26g, and 26b shown in FIG. 6, and is continuously formed in the Y direction (see FIG. 6). On the other hand, the transparent electrode 34 is formed in a stripe shape in the X direction (see FIG. 6). A region where the transparent electrode 34 and the counter electrode 36 intersect constitutes one unit pixel UP1.

  The backlight unit 43 includes a light source 41 and a light diffusing plate 40. The light source 41 includes a fluorescent tube that emits white light and three-color LEDs installed in the horizontal direction. The light emitted from the light source 41 is guided to the central portion by the light guide plate and irradiated to the upper liquid crystal panel 45 by the light diffusion plate 40. . Alternatively, an organic EL light emitting element that emits white light can be used as the light source 41.

  The liquid crystal display device 30 scans the transparent electrodes 34 composed of a large number of stripe-shaped electrodes one by one in a line-sequential manner, and corresponds to each color of RGB during the period when the scanning signals are given. An image signal is applied to the transparent electrode 36 corresponding to each color to display an image.

  Although the transparent electrode 34 is formed on the colored layer 26, the transparent electrode 34 may be formed on the transparent substrate 31, and the colored layer 26 may be formed thereon. Further, a reflective film such as a metal thin film can be formed between the colored layer 26 and the transparent substrate 31 to provide a reflective color filter for a reflective liquid crystal display device. In addition, a region where a reflective film such as a hole is not formed may be provided in a part of the reflective film formed between the colored layer 26 and the transparent substrate 31 to provide a transflective color filter. The liquid crystal display device shown in FIG. 7 shows an example of a simple matrix type liquid crystal display device. However, an active matrix type liquid crystal display device in which a TFT is provided for each unit pixel UP1 on the inner surface of the transparent substrate 31 or the counter substrate 37. It can be.

  Here, the liquid crystal display device using the color filter of the color layout shown in FIG. 6 has been described, but the same applies to the liquid crystal display device using the color filter of the color layout shown in FIGS. Needless to say.

  Next, a self-luminous display device that is driven by a TFT element using an EL light emitter as a colored layer will be described. FIG. 8 is an equivalent circuit diagram showing an equivalent circuit 50 of a display body in which EL elements are provided in each unit pixel. FIG. 9 is a schematic plan view showing a layout 60 of unit pixels in the equivalent circuit 50 shown in FIG. FIG. 10 is a schematic cross-sectional view of a portion Y-Y ′ of the display body 70 having the unit pixel UP shown in FIG.

  As shown in FIG. 8, each subpixel includes a data signal input TFT 51, a storage capacitor 52, a current limiting TFT 53, and an EL light emitting element 54. Subpixels composed of RGB colors constitute a unit pixel UP. In each subpixel, the gate of the TFT 51 is connected to the scanning line X 1, the drain is connected to the data signal destination Db, and the source is connected to one terminal of the capacitor 52. The capacitor 52 has one terminal connected to the current supply line Ib and the other terminal connected to the source of the TFT 51 and the gate of the TFT 53. The drain of the TFT 53 is connected to the current supply line Ib, and the source is connected to the anode of the EL light emitting element 54. The cathode of the EL element 54 is connected to a common electrode 57 that is commonly connected.

  The display device using the EL light emitting element 54 is driven as follows. First, scanning signals are given to the scanning lines X1, X2, X3. Data signals corresponding to the respective colors are applied to the data signal lines Dr, Dg, and Db during the selection period in which the scanning signal is applied. For example, when the scanning line X1 is selected, the TFT 51 that connects the gate to the scanning line X1 is turned on. Then, the data signal applied to the data signal line Drb is transmitted from the drain to the source, and the capacitor 52 is charged. A data signal charged in the capacitor 52 is applied to the gate of the TFT 53, and the source and drain of the transistor 53 are turned on according to the magnitude of the data signal. A current is supplied to the anode of the EL light emitting element 54 in accordance with the on-resistance between the source and drain of the TFT 53, and the light emission luminance changes in accordance with the magnitude of the data signal. This is scanned with the scanning lines X2, X3... And all the scanning lines to display an image.

  FIG. 9 shows a layout 60 of unit pixels UP (see FIG. 8) similar to the color filter layout shown in FIG. Between the scanning lines X1 and X2, an R sub-pixel composed of an R light emitting region 56r for emitting R color and an R drive circuit region 55r for driving the region, and a G light emitting region for emitting G color. 56 g and a G driving circuit area 55 g for driving this area, a B light emitting area 56 b for emitting B color, and a B driving circuit area 55 b for driving this area. B subpixels. The R subpixel is sandwiched between the data signal line Dr and the current supply line Ir. Similarly, the G subpixel and the B subpixel are sandwiched between the data signal line Dg and the current supply line Ig, and the data signal line Db and the current supply line Ib, respectively. The distance between the center line in the longitudinal direction of the region R of the R subpixel and the center lines in the longitudinal direction of the regions G1 and G2 of the G subpixel does not exceed 100 μm. The distance between the longitudinal center line and the longitudinal center line of the G subpixel region G2 also does not exceed 100 μm. In addition, the length of the center line of the boundary region between the R subpixel and the G subpixel (this region includes the current supply line Ir and the data signal line Dg), and the G subpixel and the B subpixel The length of the center line of the boundary region between them (this region includes the current supply line Ig and the data signal line Db) has a length equal to or more than ½ of the length around the unit pixel. The layout 60 shown in FIG. 9 is an example, and any color layout as shown in FIGS. 1 to 6 may be used.

  FIG. 10 shows a schematic cross-sectional view of a portion Y-Y ′ of the table itself 70 having the unit pixel UP of FIG. 9. On the surface of the transparent substrate 77, data lines Dr, Dg, Db and current supply lines Ir, Ig made of aluminum as a conductor are formed. Further, in each of the light emitting regions 56r, 65g, 56b, transparent electrodes 76r, 76g, 76b, which are cathodes of EL light emitting elements, a hole injection layer 75r, 75g, 75b, and a hole transport layer 74r, 74g, 74b are formed thereon. The light emitting layers 73r, 73g, 73b and the electron transport layers 72r, 72g, 72b are formed. The light emitting layer 72r is doped with a dopant that emits R color, the light emitting layer 72g is doped with a dopant that emits G color, and the light emitting layer 72b is doped with a dopant that emits B color.

  If the arrangement / arrangement pattern of the colored layer according to the present invention is used, the observer can visually recognize an additively mixed display even in the case of a unit pixel having a large area. In addition, since the colored layer corresponding to each pixel is not an independent shape but an arrangement / arrangement pattern that can be continuous in a horizontal or vertical direction in the vertical or horizontal direction, a passive display device that requires the same line electrode shape as the colored layer Can also be used.

It is a top view showing the color filter substrate (layout of a colored layer) of this invention. It is a top view showing the color filter substrate (layout of a colored layer) of this invention. It is a top view showing the color filter substrate (layout of a colored layer) of this invention. It is a top view showing the color filter substrate (layout of a colored layer) of this invention. It is a top view showing the color filter substrate (layout of a colored layer) of this invention. It is a top view showing the color filter substrate (layout of a colored layer) of this invention. It is sectional drawing which shows the liquid crystal display device of this invention typically. It is an equivalent circuit diagram of the EL display device of the present invention. It is a typical top view showing the layout of the unit pixel of the EL display device of the present invention. It is typical sectional drawing of the EL element display apparatus of this invention. It is the perspective view showing the decomposition | disassembly state of the conventional liquid crystal display device, and the layout figure of the color filter used for this.

Explanation of symbols

UP1 Unit pixel 2, 6, 11r First color subpixel 3, 7, 11g Second color subpixel 11b Third color subpixel 4, 8, 12, 13 Boundary region

Claims (4)

A color filter substrate formed on a substrate is a color filter in which sub-pixels of three or more different colors constitute one unit pixel and are two-dimensionally arranged in a matrix,
The unit pixel has an area of 90000 square micrometers or more,
Each sub-pixel of the three colors or more sub-pixels is greater than a single is a plane region Rutotomoni, 100 micrometers said plane regions linewidth continuous so as to penetrate the unit pixels in the Y direction It has no periodic shape, wherein three or more colors of sub-pixels are arranged so as to mesh the region of each of the periodic features,
Of the three or more sub-pixels, the first color sub-pixel is disposed along the left edge of the unit pixel, the third color sub-pixel is disposed along the right edge of the unit pixel, and the second A color sub-pixel is disposed between the first color sub-pixel and the third color sub-pixel;
The planar area of the first color sub-pixel is composed of a line area formed along the left edge of the unit pixel and a periodic area extending in the X direction from the line area.
The planar area of the third color sub-pixel is composed of a line area formed along the right edge of the unit pixel and a periodic area extending in the X direction from the line area.
The line width of the line region of the first color sub-pixel is narrower than the line width of the periodic region of the first color sub-pixel,
The line width of the line region of the third color sub-pixel is narrower than the line width of the periodic region of the third color sub-pixel,
The line width of the second color sub-pixel sandwiched between the periodic region of the first color sub-pixel and the periodic region of the third color sub-pixel is equal to the line width of the first color sub-pixel. A color filter substrate characterized by being narrower than any of the line width of the periodic region and the line width of the periodic region of the sub-pixel of the third color . The distance between the center line in the X direction of the periodic region of the first color sub-pixel and the center line in the X direction of the periodic region of the third color sub-pixel does not exceed 100 micrometers. Item 2. The color filter substrate according to Item 1. The length of the boundary line that defines the first color subpixel and the second color subpixel, and the length of the boundary line that defines the second color subpixel and the third color subpixel are: The color filter substrate according to claim 1, wherein the color filter substrate is ½ or more of the circumference of the unit pixel. The color filter substrate having the configuration described in any one of claims 1 to 3, a transparent electrode formed on the color filter substrate, a counter substrate on which a counter electrode is formed, the transparent electrode, and the counter electrode A liquid crystal sandwiched between
One of the transparent electrode and the counter electrode is a scan electrode and the other is a signal electrode, and the signal electrode is passively driven using the scan electrode and the signal electrode. A color liquid crystal display device characterized by being formed in substantially the same shape so as to correspond to the shape of the above.

Images