JP3070155B2 - Color liquid crystal display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color liquid crystal display device.

[0002]

2. Description of the Related Art Conventionally, a color liquid crystal display device is configured as shown in FIG. That is, the upper and lower transparent substrates 1 and 2 are formed of a glass plate or an isotropic plastic plate. Among them, a plurality of first electrodes 3 made of a striped transparent conductive film extending on the front and back sides of the paper are provided on the lower surface of the upper transparent substrate 1, and the first electrodes 3 cover these first electrodes 3 and are oriented. A film 4 is provided and an orientation process is performed. A color filter 5 to be described later is provided on the upper surface of the lower transparent substrate 2 so as to be covered with a protective film 6. On the protective film 6, a paper surface is arranged so as to be orthogonal to the upper first electrode 3. A plurality of second electrodes 7 made of a stripe-shaped transparent conductive film extending in the left-right direction are provided.
An alignment film 8 is provided so as to cover the electrode 7, and an alignment process is performed. In this case, the color filter 5 is the first electrode 3
A red filter R, a green filter G, and a blue filter B are alternately arranged at locations where the first and second electrodes 7 intersect with each other. First
A light-shielding portion 9 is provided to block light from leaking from a gap where the electrode 3 and the second electrode 7 do not face each other. The upper and lower transparent substrates 1 and 2 are joined by a sealing material 10 with the alignment films 4 and 8 facing each other at a predetermined interval, and a liquid crystal material 11 is sealed between the transparent substrates 1 and 2. . In addition, polarizing plates (not shown) are arranged outside the upper and lower transparent substrates 1 and 2 joined by the sealing material 10, respectively.

[0003]

However, in the above-described color liquid crystal display device, light is transmitted between the red, green, and blue filters R, G, and B formed on the upper surface of the transparent substrate 2. Since the light shielding portion 9 to be cut off must be formed in a process different from each of the filters R, G, and B, not only does the manufacturing process become complicated, but also because the materials of the color filter 5 and the light shielding portion 9 are different. And the management of the material becomes complicated, and there is a problem that a mask for forming the light shielding portion 9 is required. An object of the present invention is to provide a liquid crystal display element that can form a light shielding portion simultaneously with a color filter without requiring a special mask for exclusive use.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a pair of substrates arranged opposite to each other , and a plurality of stripes provided on each of the opposing surfaces of the pair of substrates and intersecting each other. and the transparent electrode, wherein a pair of color filters the transparent electrode <br/> on one substrate is provided in correspondence with at the intersection, the transparent electrode provided on each of the opposing surfaces of the pair of substrates and In a color liquid crystal display element including an alignment film covering the color filter and a liquid crystal material sealed between the alignment films of the respective substrates, the color filter is formed on one of the pair of substrates.
Opposite the one transparent electrode arranged red, green, in the order of blue
Is a stripe portion slightly wider than the one of the transparent electrodes, on one long side of the stripe portion, the pair
Corresponding to the gap between the other transparent electrodes formed on the other of the substrates , and adjacent to the one long side
A protruding portion formed in a comb shape protruding to a length reaching the transparent electrode, and in a gap portion between the one transparent electrode
Is one long side of the color filter and the other
Color filter overlapped with the other long side of the color filter
A light-shielding portion is formed, and a gap between the other transparent electrodes
Part is provided on one long side of the color filter.
And the adjacent color filters of other colors.
A light-shielding portion is formed so as to overlap with the lip portion .

[0005]

According to the present invention, when a color filter is formed, one long side of the stripe portion is adjacent to a color filter having a different color, with the stripe portion of the color filter corresponding to one of the transparent electrodes. And the other protruding portion protruding from the stripe portion facing between the other transparent electrodes in the direction crossing the stripe portion of the adjacent color filter having a different color. By overlapping, a light-shielding portion that blocks light can be formed at a position corresponding to a gap between the transparent electrodes where the two transparent electrodes do not face each other.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In this case, the same parts as those in FIG. 4 described above are denoted by the same reference numerals, and description thereof will be omitted. On the lower surface of the upper transparent substrate 1, the first stripe-shaped
Are formed, and an alignment film 4 is formed so as to cover the first electrodes 3. On the upper surface of the lower transparent substrate 2, a color filter 20 to be described later and a light-shielding portion 21 formed by the color filter 20 are formed.
And a second electrode 7 in a stripe shape orthogonal to the first electrode 3 is formed on the protective film 6 in the same manner as described above. An alignment film 8 is formed to cover the electrode 7. The upper and lower transparent substrates 1 and 2 have alignment films 4 and 8 bonded to each other by a sealing material 10 at a predetermined interval, and a liquid crystal material 11 is sealed between them.

The color filter 20 has a structure in which red, green, and blue filters R, G, and B are arranged in correspondence with the first electrode 3 of the upper transparent substrate 1. As shown in FIGS. 2 and 3A, each of the filters R, G, and B has a vertically elongated stripe portion 22 and a long side portion of the left side of the stripe portion 22 on the lower transparent substrate 2. 2 electrodes 7
The protruding portion 23 is formed in a comb shape corresponding to the space. That is, the stripe portion 22 has a long side on the right side coincident with the right side of the first electrode 3, a long side on the left side protruding from the left side of the first electrode 3, and the first electrode 3 adjacent on the left side. Wide width w that slightly overlaps the right side of
Is formed. The protruding portion 23 is formed with a width t slightly larger than the width between the second electrodes 7, and the protruding length s is formed to reach the left side of the first electrode 3 adjacent to the left side. I have. The light-shielding portion 21 is a portion where the adjacent filters R, G, and B overlap as shown by hatching in FIG.
The first electrode 3 and the second electrode 7 are provided so as to correspond to places where they do not face each other.

Next, a case where the above-described color filter 20 is formed will be described with reference to FIGS. First, as shown in FIG. 3A, a red filter R is formed on the upper surface of the lower transparent substrate 2 by using a mask (not shown).
Only the first electrode 3 is formed so as to correspond to every third electrode. In this case, the stripe portion 22 is aligned with the first electrode 3 with the right long side thereof coincident with the right side of the first electrode 3 and the left long side slightly protruding from the left side of the first electrode 3. It is formed correspondingly. The protruding portion 23 is formed so as to protrude toward the first electrode 3 adjacent to the left side.

Next, as shown in FIG. 3B, a green filter G is formed on the right side of the red filter R with the same mask shifted by one from the first electrode 3. That is, when the right side of the green filter G is made to correspond to the left side of the protruding portion 23 of the right red filter R, the width w of each of the filters R and G is wider than the first electrode 3, as shown by oblique lines. The left side of the green filter G overlaps the right side of the red filter R, and the protrusion 23 of the green filter G is formed to overlap in the direction crossing over the red filter R. In this case, the left end of the protruding portion 23 of the green filter G does not reach the left side of the red filter R, and is formed apart from the right side of the red filter R by the overlap of the left side of the green filter G. .

Thereafter, as shown in FIG. 3C, the blue filter B is placed on the right side of the green filter G while the same mask is further shifted by one with respect to the first electrode 3. It is formed in the same manner as described above. That is, when the right side of the blue filter B is made to correspond to the left end of the projecting portion 23 of the right green filter G,
As shown by the oblique lines, the right side of the green filter G overlaps the left side of the blue filter B, and the projecting portion 23 of the blue filter B is formed so as to overlap in the direction crossing over the green filter G. The left end of the part 23 coincides with the right side of the red filter R. As a result, the long sides and the protruding portions 23 of the filters R, G, and B adjacent to each other overlap,
As a result, the light-shielding portions 21 are provided at the positions corresponding to the gap portions where the first electrode 3 and the second electrode 7 do not face each other, by the filters R,
G and B are formed simultaneously.

As described above, according to the above-described color liquid crystal display element, when the red, green, and blue filters R, G, and B are sequentially formed, the long side and the protruding portion of each stripe portion 22 are formed. Since the light-shielding portions 21 can be formed simultaneously with the formation of the color filters 20 by superimposing the 23, the manufacturing process can be simplified. Further, since the light shielding portion 21 is made of the same material as the color filter 20,
There are fewer types of materials than before, and the management of materials becomes easier. In addition, since the filters R, G, and B can be sequentially formed only by shifting one by one with respect to the first electrode 3 using the same mask, good workability and efficient manufacture can be achieved. it can. Furthermore, since the light-shielding portion 21 can be reliably formed at a position where the first electrode 3 and the second electrode 7 do not face each other, light leakage from between the electrodes 3 and 7 can be reliably prevented.

The present invention is not limited to the above embodiment. For example, the filters R, G, and B for red, green, and blue need not be formed so as to correspond to the first electrode 3 and may be formed so as to correspond to the second electrode 7. In this case, the projections 23 projecting from the long sides of the filters R, G, and B may be formed so as to correspond to the spaces between the first electrodes 3.

[0013]

As described above, according to the present invention, a protruding portion is formed in a comb-like shape on one long side of the stripe portion of the color filter, and the protruding portion and the long side are adjacent to each other. The light-shielding part is formed at the location corresponding to the gap where the transparent electrode does not oppose by forming the light-shielding part at the same time as the color filter without forming a special mask. The manufacturing process can be simplified, the types of materials are small, and the management of materials can be facilitated.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view of a main part of a color liquid crystal display device of the present invention.

FIG. 2 is a diagram showing a relationship between opposing electrodes, a color filter, and a light shielding portion.

3A is a plan view of a main part of a state where a red filter is formed in a color filter forming process, FIG. 3B is a plan view of a main part of a state where a green filter is formed next to the red filter, FIG. (C) is a main part plan view of a state where a blue filter is formed next to a green filter.

FIG. 4 is an enlarged sectional view of a main part of a conventional color liquid crystal display element.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 2 Transparent substrate 3, 7 Electrode 4, 8 Alignment film 11 Liquid crystal material 20 Color filter 21 Shielding part 22 Stripe part 23 Projection part

Claims (1)

(57) [Claims] And 1. A oppositely disposed pair of substrates, a plurality respectively provided on the opposite side of the pair of substrates, and stripe-shaped transparent electrodes which intersect each other, wherein the transparent electrode intersection on one of the pair of substrates A color filter provided corresponding to the position to be formed, an alignment film provided on each of the opposing surfaces of the pair of substrates to cover the transparent electrode and the color filter, and sealed while the alignment films of the substrates face each other. A color liquid crystal display device comprising: a liquid crystal material; and the color filter is formed on one of the pair of substrates.
Red, green, and blue in order in opposition to the other transparent electrode.
Is a stripe portion slightly wider than the one of the transparent electrodes, on one long side of the stripe portion, the pair
In the gap between the other transparent electrodes formed on the other side of the substrate
The one transparent side corresponding to and adjacent to the one long side portion
A protruding portion formed in a comb shape protruding to a length reaching the bright electrode, and in a gap between the one transparent electrodes,
One long side of the color filter and another adjacent color
Overlaps with the other long side of the color filter
Part is formed, and a gap portion between the other transparent electrodes
Is provided on one long side of the color filter.
Strike the protrusions and adjacent color filters of other colors
A color liquid crystal display device, wherein a light-shielding portion is formed so as to overlap with a light-shielding portion .