JP7113597B2 - liquid crystal display - Google Patents

Description

The present invention relates to a liquid crystal display device that has color filters and displays various information.

Conventionally, both sides of a liquid crystal display panel in which a display area and a non-display area are arranged with a boundary line L therebetween are arranged so that a light shielding layer and a gradation layer are arranged at a position corresponding to the boundary line L, with respect to the non-display area. A liquid crystal display device is known that has a structure sandwiched between two light-transmitting members formed to block light (see, for example, Patent Document 1). Thereby, it is possible to prevent the boundary line L between the display area and the non-display area having slightly different transmittances from being visually recognized.

JP 2008-209764 A

By the way, in general, a color filter included in a liquid crystal display device has a filter portion corresponding to three primary colors and a black mask portion disposed therearound. corresponding to the non-display area and applying the method disclosed in the above-mentioned Patent Document 1, for manufacturing reasons, the boundary line between the filter portion and the black mask portion is less than the boundary line between the light shielding layer and the gradation layer. However, there is a problem that the presence of the black mask portion exposed between the filter portion and the light shielding layer becomes conspicuous when the filter portion and the light shielding layer are displaced inward. For example, in terms of design, each of the light shielding layer and the black mask portion is black or a color close to black. , the light shielding layer and the black mask portion do not have exactly the same color due to the difference in materials used, etc., and it is difficult to completely prevent the black mask portion from being conspicuous.

SUMMARY OF THE INVENTION The present invention has been created in view of the above points, and its object is to provide a liquid crystal display device capable of preventing the mask portion around the filter portion included in the color filter from becoming conspicuous. be.

In order to solve the above-described problems, the liquid crystal display device of the present invention includes a color filter including a filter section and a mask section arranged outside the filter section to block light, and a liquid crystal section having a display area corresponding to the filter section. and a cover member made of a translucent material and arranged on the surface side of the liquid crystal panel, wherein the cover member is part of a mask portion arranged outside the filter portion A mixed layer having a pattern formed by mixing a partially light-shielding region and a partially light-transmitting region corresponding to , and a light-shielding layer disposed outside the mixed layer and having the same material and color as the partial light-shielding region have. Each of the partial light- shielding region and the light-shielding layer is formed by stacking a plurality of light -shielding material layers. By decreasing the number of layers of the light shielding material layer closer to , the thickness of the partial light shielding region is reduced as the filter portion is approached .

By covering the mask portion of the color filter with the mixed layer having a pattern in which the partial light-shielding region and the partial light-transmitting region are formed in a mixed manner, the mask portion of the color filter that can be seen through the partial light-transmitting region is covered with the mixed layer. The color and the color of the partial light-shielding region having the same color as the light-shielding layer of the cover member appear mixed, and the mask part around the filter part included in the color filter can be prevented from becoming conspicuous. Further, even if the boundary position between the filter section and the mask section shifts inward from the inner boundary of the mixed layer and a part of the mask section is exposed, the above-described mixed layer between the light shielding layer and the exposed mask section can be prevented. Since the parts are arranged, it is possible to prevent only the mask part from being emphasized and conspicuous. In particular, as the distance from the light-shielding layer increases, the number of light-shielding material layers constituting the mixed layer is reduced to reduce the thickness of the partial light-shielding region . In this case, the ratio of the color of the mask portion of the color filter can be increased as the thickness of the partial light-shielding region becomes thinner, and the degree of color mixture in the mixed layer can be changed according to the thickness of the partial light-shielding region . Become. As for the light shielding layer, it is possible to reliably shield light by stacking light shielding material layers.

Further, the mixed layer described above extends beyond the mask portion toward the filter portion along the cover member, and it is desirable to cover a partial region in contact with the mask portion in the vicinity of the outer circumference of the filter portion with the mixed layer. . This makes it possible to blur the boundary between the mask portions of the color filter and the filter portions, thereby further preventing the mask portions from becoming conspicuous.

Further, it is preferable that the partial light-shielding region included in the above-described mixed layer has a smaller area along the cover member as the distance from the mask portion increases. As a result, the mask portion of the color filter can be made inconspicuous, and the boundary between the mixed layer of the cover member and the filter portion of the color filter can also be made inconspicuous.

Moreover, it is desirable that the color of each pixel of the liquid crystal panel corresponding to the partially transmissive region included in the mixed layer be the color of the mask portion . Thereby, the boundary between the mixed layer of the cover member and the filter portion of the color filter can be made less conspicuous.

In the mixed layer described above, the partial light-transmitting region included in the portion extending along the cover member beyond the mask portion toward the filter portion corresponds to one pixel of the liquid crystal panel. It is desirable that the colors are formed so that they are exposed in equal proportions. Accordingly, it is possible to prevent the color of each pixel from being changed due to the mixed layer shielding a part of the color component of each pixel.

Moreover, it is desirable that the pattern described above is formed by uniformly mixing the partially light-shielding region and the partially light-transmitting region. Moreover, it is desirable that the pattern described above is a checkered pattern. By uniformly mixing the partially light-shielding region and the partially light-transmitting region by forming the mixed layer in a checkered pattern or the like, the entire mask portion seen through the partially light-transmitting region can be uniformly blurred when viewed from a distance. can be reliably prevented from being conspicuous.

Moreover, it is desirable that the pattern described above is formed by mixing the partial light-shielding region and the partial light-transmitting region in units of pixels of the liquid crystal panel. By mixing on a pixel-by-pixel basis, the mixed layer as a whole can be made uniform, and the mask portion can be reliably prevented from being conspicuous.

Moreover, it is desirable to use a light-shielding material layer formed by printing using a paint containing a light-shielding material. In particular, the printing described above is preferably screen printing. This makes it easy to improve the quality of the mixed layer and the light shielding layer, such as the material and thickness.

It is a figure which shows the structure of the liquid crystal display device of 1st Embodiment. FIG. 4 is a partial cross-sectional view showing the positional relationship between an intermediate layer formed on the surface of a protective cover, filter portions of color filters, and a black mask; FIG. 4 is a partial plan view showing the positional relationship between an intermediate layer formed on the surface of the protective cover, the filter portion of the color filter, and the black mask, and specific examples of the intermediate layer. FIG. 4 is a cross-sectional view showing a specific configuration of an intermediate layer and a light shielding layer generated using a plurality of light shielding material layers of the first embodiment; FIG. 4 is an explanatory diagram of the inner boundary of the light shielding material layer; It is a figure which shows the structure of the liquid crystal display device of 2nd Embodiment. FIG. 10 is a partial cross-sectional view showing the positional relationship between the intermediate layer, the filter section, and the black mask in the second embodiment; FIG. 10 is a partial plan view showing the positional relationship between the intermediate layer, the filter section, and the black mask, and a specific example of the intermediate layer according to the second embodiment; FIG. 10 is a cross-sectional view showing specific configurations of an intermediate layer and a light shielding layer generated using a plurality of light shielding material layers according to the second embodiment; FIG. 10 is a partial plan view showing the positional relationship between the intermediate layer, the filter section, and the black mask, and a specific example of the intermediate layer according to the third embodiment; FIG. 13 is a diagram showing the configuration of a display system according to a fourth embodiment; FIG. It is a figure which shows the modification of a partial light-shielding area|region. FIG. 10 is a diagram showing a modification in which each of the light shielding layer and the intermediate layer has a three-layer structure using three light shielding material layers;

A liquid crystal display device according to an embodiment to which the present invention is applied will be described below with reference to the drawings.

(First embodiment)
FIG. 1 is a diagram showing the configuration of the liquid crystal display device of the first embodiment. As shown in FIG. 1 , the liquid crystal display device 10 of this embodiment includes a liquid crystal panel 100 , a backlight 200 and a protective cover 300 .

The liquid crystal panel 100 includes a liquid crystal portion 110 , a color filter 120 , glass substrates 130 and 132 and polarizing plates 140 and 142 .

The liquid crystal portion 110 has a display region filled with a liquid crystal material and a non-display region surrounding it, and by controlling the applied voltage, the light transmittance (transmittance) of the display region can be changed. can. The color filter 120 includes a filter section 122 and a black mask (BM) 124 . The filter section 122 has a rectangular shape corresponding to the display area of the liquid crystal section 110, and has an RGB pattern corresponding to each of a predetermined number of pixels. By changing the transmittance of the liquid crystal section 110 corresponding to these RGB patterns and changing the mixing ratio of RGB, any color can be realized in pixel units. For example, an IPS (In Plane Switching, registered trademark) system is used, but other systems may be used. The black mask 124 is a mask portion arranged around the filter portion 122 and shields light for shielding lead lines of transparent electrodes for applying voltage to the liquid crystal portion 110 .

A pair of glass substrates 130 and 132 are arranged with the liquid crystal portion 110 and the color filter 120 interposed therebetween, and a pair of polarizing plates 140 and 142 are arranged with both sides of these substrates interposed therebetween. One glass substrate 130 constitutes a color filter substrate together with the color filters 120 and a transparent electrode (common electrode, not shown). The other glass substrate 132 constitutes an array substrate together with TFT circuits (not shown) and wiring. Also, the transmission axes of the pair of polarizing plates 140 and 142 are orthogonal (90°) to each other.

A backlight 200 is arranged on the back side of the liquid crystal panel 100 described above, and a protective cover 300 is arranged on the front side. The protective cover 300 is a translucent member made of acrylic (PMMA), polycarbonate (PC), or glass. This protective cover 300 and one polarizing plate 140 of the liquid crystal panel 100 are optically joined together via an optical coupling 310 without a gap.

In addition, on the surface of the protective cover 300 (on the side of the optical coupling 310), a light shielding layer 302 is arranged on the outer peripheral side so as to surround an area larger than the filter portion 122 of the color filter 120, and the light shielding layer 302 and the filter An intermediate layer (mixed layer) 304 corresponding to the region between the portion 122 is formed. The intermediate layer 304 includes a partial light-shielding region 304a (FIG. 3) having the same material and the same color (for example, black) as the light-shielding layer 302, and a hole-shaped partial light-transmitting region 304b (see FIG. 3) other than the partial light-shielding region 304a. 3). This partial light-transmitting region 304b may be configured using a light-transmitting member, or may be an empty space. Each of the partial light-shielding region 304a and the partial light-transmitting region 304b has the same size as each pixel of the liquid crystal panel 100, and is evenly mixed in pixel units. Specifically, a checkered pattern is formed by these partial light-shielding regions 304a and partial light-transmitting regions 304b. For example, it is desirable that the light shielding layer 302 and the intermediate layer 304 are simultaneously formed on the surface of the protective cover 300 by screen printing. may be formed. Also, the intermediate layer 304 may adopt a pattern other than the checkered pattern.

FIG. 2 is a partial cross-sectional view showing the positional relationship between intermediate layer 304 formed on the surface of protective cover 300 and filter portion 122 of color filter 120 and black mask 124 . 3 is a partial plan view showing the positional relationship between the intermediate layer 304 formed on the surface of the protective cover 300, the filter portion 122 of the color filter 120 and the black mask 124, and a specific example of the intermediate layer 304. FIG. .

As shown in FIG. 2, inner boundary L1 of intermediate layer 304 coincides with boundary L2 between filter portion 122 of color filter 120 and black mask 124 . In addition, the outer boundary L3 of the intermediate layer 304 is positioned inside the outer boundary L4 of the black mask 124 . Therefore, as shown in FIG. 3, through the partially transmissive region 304b of the intermediate layer 304, the black mask 124 disposed thereunder can be seen. In this example, the inner boundary L1 of the intermediate layer 304 is aligned with the boundary L2 between the filter portion 122 of the color filter 120 and the black mask 124. You may make it shift a little.

By the way, each of the intermediate layer 304 and the light shielding layer 302 of this embodiment is formed by stacking a plurality of light shielding material layers.

FIG. 4 is a cross-sectional view showing a specific configuration of the intermediate layer 304 and the light shielding layer 302 that are produced using a plurality of light shielding material layers. The example shown in FIG. 4 shows the case of using, for example, two light shielding material layers.

As shown in FIG. 4, the light shielding layer 302 is composed of a first light shielding material layer 302A placed on the surface of the protective cover 300 and a second light shielding material layer 302B placed thereon. These first and second light shielding material layers 302A and 302B have the same shape.

The intermediate layer 304 is composed of a first light shielding material layer 304A arranged on the surface of the protective cover 300 and a second light shielding material layer 304B arranged on the surface thereof. Of the first and second light shielding material layers 304A and 304B, the first light shielding material layer 304A has the inner boundary L1 as described above, which is the boundary L2 (Fig. 2), and the position of the inner boundary L1′ of the second light shielding material layer 304B is set between the inner boundary L1 and the outer boundary L3 of the intermediate layer 304 as a whole. In this way, by making the intermediate layer 304 have a stepped structure by making the first and second light shielding material layers 304A and 304B different in size, the intermediate layer 304 as a whole becomes closer to the light shielding layer 302. The number of light shielding material layers is increased to increase the thickness, and the farther away from the light shielding layer 302 is, the fewer the number of light shielding material layers is to decrease the thickness.

In the example shown in FIG. 4, the first light shielding material layer 302A of the light shielding layer 302 and the first light shielding material layer 304A of the intermediate layer 304 are shown as separate members. can be formed Similarly, the second light shielding material layer 302B of the light shielding layer 302 and the second light shielding material layer 304B of the intermediate layer 304 can be integrally formed by screen printing or the like. By using each light-shielding material layer formed by printing such as screen printing, it becomes easy to improve the quality of the intermediate layer 304 and the light-shielding layer 302, such as the material and thickness.

Also, the position of the inner boundary L1' of the second light shielding material layer 304B included in the intermediate layer 304 can be arbitrarily set regardless of the shape of the partial light shielding region 304a. For example, in the example shown in FIG. 3, each partial light-shielding region 304a is drawn in a square shape. The inner boundary L1' may be set at a position deviated from.

As described above, in the liquid crystal display device 10 of the first embodiment, the color filter 120 is formed by the intermediate layer 304 having a pattern in which the partial light-shielding regions 304a and the partial light-transmitting regions 304b of the same material and color as the light-shielding layer 302 are mixed. By covering the black mask 124 of the intermediate layer 304, the color of the black mask 124 of the color filter 120 and the color of the light shielding layer 302 of the protective cover 300 seen through the partial light transmission region 304b are mixed and seen uniformly. As a result, the black mask 124 around the filter portion 122 included in the color filter 120 can be prevented from becoming conspicuous.

Further, by making the intermediate layer 304 in a checkerboard pattern or the like and uniformly mixing the partial light-shielding regions 304a and the partial light-transmitting regions 304b of the same material and color as the light-shielding layer 302, a black mask that can be seen through the partial light-transmitting regions 304b can be obtained. Since 124 can be uniformly blurred when viewed from a distance, it is possible to further prevent the black mask 124 from standing out.

In addition, in the intermediate layer 304, by mixing the partial light-shielding regions 304a and the partial light-transmitting regions 304b on a pixel-by-pixel basis, the intermediate layer 304 as a whole can be made uniform, and the black mask 124 is reliably prevented from being conspicuous. can do.

Even if the boundary position L2 between the filter section 122 and the black mask 124 shifts inwardly from the inner boundary L1 of the intermediate layer 304 and a part of the black mask 124 is exposed, the light shielding layer 302 and the exposed black mask 124 are partially exposed. Since the mixed portion of the partial light-shielding region 304a and the partial light-transmitting region 304b is arranged between the masks 124, it is possible to prevent the black mask 124 from being emphasized and conspicuous.

In particular, as the distance from the light shielding layer 302 increases, the number of light shielding material layers forming the intermediate layer 304 is reduced and the thickness of the intermediate layer 304 is reduced. , the color ratio of the black mask 124 of the color filter 120 can be increased as the thickness of the intermediate layer 304 becomes thinner. It is possible to change. In addition, as for the light shielding layer 302, by overlapping the light shielding material layers 304A and 304B, light can be reliably shielded.

(Second embodiment)
FIG. 6 is a diagram showing the configuration of the liquid crystal display device of the second embodiment. The liquid crystal display device 10A of this embodiment shown in FIG. 6 differs from the liquid crystal display device 10 of the first embodiment shown in FIG. 1 in that the intermediate layer 304 is replaced with an intermediate layer 1304 .

The intermediate layer 1304 differs from the intermediate layer 304 of the first embodiment shown in FIGS. 1 to 5 in that the inner side thereof is extended toward the filter section 122 by, for example, two pixels. As a result, along with the black mask 124 , a partial region of the filter section 122 in the vicinity of the outer periphery of the filter section 122 and in contact with the black mask 124 is covered with the intermediate layer 1304 .

FIG. 7 is a partial cross-sectional view showing the positional relationship between the intermediate layer 1304 and the filter section 122 and black mask 124 of the second embodiment. FIG. 8 is a partial plan view showing the positional relationship between the intermediate layer 1304, the filter section 122 and the black mask 124, and a specific example of the intermediate layer 1304 of the second embodiment.

As shown in FIG. 7 , the inner boundary L11 of the intermediate layer 1304 is positioned inside the boundary L2 between the filter portion 122 of the color filter 120 and the black mask 124 . Also, the outer boundary L3 of the intermediate layer 1304 is positioned inside the outer boundary L4 of the black mask 124 . Therefore, as shown in FIG. 8, a part of the black mask 124 and a part of the filter part 122 (a part corresponding to two pixels along the outer circumference) arranged below through the partial light-transmitting region 1304b of the intermediate layer 1304 can be detected. can see

As in the first embodiment, each of the intermediate layer 1304 and the light shielding layer 302 of this embodiment is formed by stacking a plurality of light shielding material layers.

FIG. 9 is a cross-sectional view showing a specific configuration of the intermediate layer 1304 and the light shielding layer 302 that are produced using a plurality of light shielding material layers. The example shown in FIG. 9 shows the case of using, for example, two light shielding material layers.

As shown in FIG. 9, the light shielding layer 302 is composed of a first light shielding material layer 302A arranged on the surface of the protective cover 300 and a second light shielding material layer 302B arranged on the surface thereof. These first and second light shielding material layers 302A and 302B have the same shape.

The intermediate layer 1304 is composed of a first light shielding material layer 1304A arranged on the surface of the protective cover 300 and a second light shielding material layer 1304B arranged on the surface thereof. Among the first and second light shielding material layers 1304A and 1304B, the first light shielding material layer 1304A has the inner boundary L11 as described above, which is the boundary L2 between the filter portion 122 of the color filter 120 and the black mask 124 (Fig. 7), and the position of the inner boundary L11′ of the second light shielding material layer 1304B is set between the inner boundary L11 and the outer boundary L3 of the intermediate layer 1304 as a whole. In this way, by making the intermediate layer 1304 have a stepped structure by making the sizes of the first and second light shielding material layers 1304A and 1304B different, the intermediate layer 1304 as a whole becomes closer to the light shielding layer 302. The number of light shielding material layers is increased to increase the thickness, and the farther away from the light shielding layer 302 is, the fewer the number of light shielding material layers is to decrease the thickness. The inner boundary L11′ of the second light shielding material layer 1304B of the intermediate layer 1304 described above may be aligned with the boundary L2 (FIG. 2) between the filter section 122 and the black mask 124, or may be shifted inward or outward. can be

As described above, in the liquid crystal display device 10A of the second embodiment, the intermediate layer 1304 extends beyond the inner boundary L2 of the black mask 124 toward the filter section 122, and extends along the outer periphery of the filter section 122. covering a part of the area. Therefore, the boundary between the black mask 124 of the color filter 120 and the filter portion 122 can be blurred, and the black mask 124 can be further prevented from being conspicuous.

In particular, since the thickness of the intermediate layer 1304 is reduced by decreasing the number of light shielding material layers constituting the intermediate layer 1304 as the distance from the light shielding layer 302 increases, light shielding by each light shielding material layer is incomplete and light is slightly reduced. When the intermediate layer 1304 is thinner, the ratio of the colors of the black mask 124 and the filter section 122 of the color filter 120 can be increased. It becomes possible to change it according to thickness.

(Third embodiment)
FIG. 10 is a partial plan view showing the positional relationship between the intermediate layer 2304, the filter section 122 and the black mask 124, and a specific example of the intermediate layer 2304 according to the third embodiment. The configurations shown in FIGS. 6 and 7 can be used as they are by replacing the intermediate layer 1304 of the second embodiment with the intermediate layer 2304 of the third embodiment.

As shown in FIG. 10, the intermediate layer 2304 of this embodiment is the same as the intermediate layer 1304 of the second embodiment in that the inner side thereof is extended toward the filter section 122 by, for example, two pixels. , the partial light-shielding region 2304a that overlaps with the filter portion 122 becomes smaller as the distance from the black mask 124 increases.

As a result, the black mask 124 of the color filter 120 can be made inconspicuous, and the boundary between the intermediate layer 2304 of the protective cover 300 and the filter portion 122 of the color filter 120 can also be made inconspicuous.

(Fourth embodiment)
In the second embodiment, the color of each pixel seen through the partially translucent region 1304b of the intermediate layer 1304 covering the filter section 122 was not particularly limited during operation of the liquid crystal display device 10A. In the embodiment, the color of each pixel seen through partially translucent region 1304b is set to a specific color.

For example, in FIG. 8, the color of each pixel visible from the inner 1-pixel width partial light-transmitting region 1304b adjacent to the black mask 124 is set to the color of the black mask 124, and the inner 1-pixel width portion is set to the color of the black mask 124. The color of each pixel that can be seen from the translucent area 1304b is set to an intermediate color between the color of the pixel adjacent to the inner side and the color of the light shielding layer 302 and the partial light shielding area 1304a. These colors are set, for example, by the display processing unit 20 (FIG. 11) that drives the liquid crystal display device 10A.

FIG. 11 is a diagram showing the configuration of the display system of the fourth embodiment. The display system shown in FIG. 11 includes a liquid crystal display device 10A and a display processing section 20. As shown in FIG. The liquid crystal display device 10A has, for example, the configuration shown in FIG. The display processing unit 20 includes a frame memory to which display data is input and stores pixel-by-pixel RGB data, and a filter unit 122 based on the display data, which converts the color of two pixels in the vicinity of the periphery of the filter unit 122 into the color of the black mask 124 described above. Alternatively, a color change processing unit that changes the color of the corresponding pixel in the frame memory by setting to an intermediate color between the color of the adjacent pixel and the color of the light-shielding layer 302 or the partial light-shielding region 1304a, and It also includes a driver that reads RGB data for each pixel and drives the liquid crystal display device 10A.

In this way, by setting (changing) the color of each pixel seen through the partial light-transmitting region 1304b to a specific color, the boundary between the intermediate layer 1304 of the protective cover 300 and the filter portion 122 of the color filter 120 is made more conspicuous. can be eliminated.

By the way, the technique of setting the color of each pixel seen through the partially translucent region 1304b to a specific color may be applied to the color of each pixel seen through the partially translucent region 2304b of the intermediate layer 2304 shown in FIG.

In the third and fourth embodiments, when the size of the partial light-shielding region 2304a is smaller than the size of the partial light-transmitting region 2304b shown in FIG. As for the region exposed without being shielded, the partially shielded region 2304a is not formed into a rectangular shape (square) similar to the pixel, but as shown in FIG. It is desirable to have a shape that exposes the colors (RGB) in the same ratio. As a result, it is possible to prevent the color of each pixel from changing due to a change in the ratio of exposed RGB due to a portion of each pixel being covered with the partial light shielding region 2304a of the intermediate layer 2304. FIG.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention. For example, in the above-described fourth embodiment, the color of each pixel seen from the inner one-pixel-width partial light-transmitting region 1304b adjacent to the black mask 124 is set to the color of the black mask 124 (first color). , the color of each pixel seen from the partial light-transmitting region 1304b of one pixel width on the inner side is the intermediate color (second color) between the color of the pixel adjacent to the inside and the color of the light-shielding layer 302 and the color of the partial light-shielding region 1304a. However, the entire first and second colors may be replaced with the first color or may be replaced with the second color.

In each of the above-described embodiments, each of the light shielding layer 302 and the like and the intermediate layer 304 and the like has a two-layer structure using two light shielding material layers. It may be a structure.

FIG. 13 is a diagram showing a modification in which each of the light shielding layer 302 and the intermediate layer 304 has a three-layer structure using three light shielding material layers. Note that the intermediate layers 1304 and 2304 in other embodiments can also be modified in the same manner, and a detailed description thereof will be omitted.

As shown in FIG. 13, the light shielding layer 302 includes a first light shielding material layer 302A disposed on the surface of the protective cover 300, a second light shielding material layer 302B disposed on the surface, and a light shielding material layer 302B disposed on the surface. and a third light shielding material layer 302C. These first, second and third light shielding material layers 302A, 302B, 302C have the same shape.

The intermediate layer 304 includes a first light shielding material layer 304A arranged on the surface of the protective cover 300, a second light shielding material layer 304B arranged on the surface thereof, and a third light shielding material layer 304B arranged on the surface thereof. and a light shielding material layer 304C. Inner boundaries L1, L1', and L1'' of these first, second, and third light shielding material layers 304A, 304B, and 304C are set by sequentially shifting positions from the inside toward the outside (the light shielding layer 302 side). It is In this manner, the intermediate layer 304 has a stepped structure by varying the sizes of the first, second, and third light shielding material layers 304A, 304B, and 304C. The closer to the layer 302, the greater the number of light-shielding material layers, the thicker the thickness.

As described above, according to the present invention, by covering the mask portion of the color filter with the intermediate layer having a pattern in which the partially light-shielding region and the partially light-transmitting region are mixed, in this intermediate layer, light can pass through the partially light-transmitting region. The visible color of the mask portion of the color filter and the color of the partial light-shielding region having the same color as the light-shielding layer of the cover member appear mixed, and the mask portion around the filter portion included in the color filter is conspicuous. can be prevented.

Reference Signs List 10, 10A liquid crystal display device 20 display processing section 100 liquid crystal panel 200 backlight 300 protective cover 110 liquid crystal section 120 color filter 130, 132 glass substrate 140, 142 polarizing plate 122 filter section 124 black mask (BM)
302 light shielding layers 304, 1304, 2304 intermediate layers 302A, 304A first light shielding material layers 302B, 304B second light shielding material layers 304a, 1304a, 2304a partial light shielding regions 304b, 1304b, 2304b partial light transmitting regions

Claims (10)

a liquid crystal panel having a color filter including a filter portion and a mask portion arranged outside the filter portion to block light; and a liquid crystal portion having a display area corresponding to the filter portion; A liquid crystal display device comprising a cover member made of a translucent material,
The cover member includes a mixed layer having a pattern in which a partial light-shielding region and a partial light-transmitting region are mixed and formed corresponding to a portion of the mask portion disposed outside the filter portion, and the mixed layer. and a light-shielding layer having the same material and color as the partial light-shielding region disposed outside the
Each of the partial light shielding region and the light shielding layer is formed by stacking a plurality of light shielding material layers,
In the partial light shielding region , the number of layers of the light shielding material layer is increased toward the light shielding layer, and the number of light shielding material layers is decreased toward the filter portion from the light shielding layer . A liquid crystal display device, wherein the thickness of the liquid crystal display device is reduced toward the filter portion . The mixed layer extends beyond the mask portion toward the filter portion along the cover member ,
2. The liquid crystal display device according to claim 1, wherein a partial region in the vicinity of the outer circumference of the filter section and in contact with the mask section is covered with the mixed layer. 3. The liquid crystal display device according to claim 2, wherein the partial light-shielding region included in the mixed layer has a smaller area along the cover member as the distance from the mask section increases in the partial region. 4. The liquid crystal display device according to claim 2, wherein the color of each pixel of the liquid crystal panel corresponding to the partially transmissive region included in the mixed layer is the color of the mask portion . In the mixed layer , the partially translucent region included in the portion extending beyond the mask portion toward the filter portion along the cover member constitutes the filter portion corresponding to one pixel of the liquid crystal panel. 5. The liquid crystal display device according to any one of claims 2 to 4, wherein the plurality of colors are exposed at the same ratio. 6. The liquid crystal display device according to claim 1, wherein the pattern is formed by uniformly mixing the partial light shielding area and the partial light transmitting area. 7. The liquid crystal display device according to claim 1, wherein the pattern is a checkered pattern. 8. The liquid crystal display device according to claim 1, wherein the pattern is formed by mixing the partial light-shielding region and the partial light-transmitting region in units of pixels of the liquid crystal panel. . 9. The liquid crystal display device according to claim 1, wherein the light shielding material layer is formed by printing using a paint containing a light shielding material. 10. The liquid crystal display device according to claim 9, wherein the printing is screen printing.

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