JPH05203925A - Liquid crystal display element - Google Patents

Abstract

PURPOSE:To obtain the display element having a uniform cell spacing, excellent shock resistance and excellent uniformity of image quality by providing light shielding parts on a substrate in the corresponding positions within picture elements of a specific ratio of the total number of the picture elements or above when viewed from the plane side of the substrate. CONSTITUTION:Band-shaped transparent electrodes 13 and band-shaped transparent electrodes 16 intersect each other and the picture elements 20 are formed in the intersected parts of the electrodes. The grid parts of a grid-shaped black matrix 12 are so formed as to exist between the transparent electrodes 13 and between the transparent electrodes 16 and the space parts are so formed as to correspond to the picture elements 20. Further, the black matrix 12 has the light shielding parts 21 formed to project from the intersected parts of the grid at one corner on the same side as all the spaces. The light shielding parts 21 are formed at substantially nearly the same sizes for all. The light shielding parts 21 are provided within the substrate of the corresponding positions within the picture elements of >=5% of the total number of the picture elements when viewed from the plane side of the substrate. Joining parts 19 for joining oriented films are provided right above the light shielding parts 21 viewed from the plane side of the substrate, i.e., in the positions overlapping on the light shielding parts 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device having a uniform cell gap, excellent shock resistance, and excellent image quality uniformity.

[0002]

2. Description of the Related Art Liquid crystal display elements conventionally used for watches, televisions, personal computer displays, etc. are basically
Two transparent substrates provided with at least a transparent electrode and an alignment film on one side are arranged so that the alignment films face each other,
It has a structure in which liquid crystal is filled in the voids between the alignment films. Although various liquid crystals are used as the liquid crystal, recently, a ferroelectric liquid crystal having a high-speed response is expected.

In order to realize high-speed response, the cell gap of the liquid crystal display element must be as thin as 1 to 4 μm. Further, since the ferroelectric liquid crystal has a property closer to that of a crystal than the conventional nematic liquid crystal, the alignment of the liquid crystal is broken by touching the central part of the liquid crystal display element, and the liquid crystal is not returned to its original state. It is inferior to

In order to solve such a problem, the applicant of the present patent has applied for a patent for a cell for a liquid crystal display device in which a gap is provided between the alignment films and the cells are adhered by dot-shaped adhesive sites ( See, for example, JP-A-64-18126, JP-A-64-18127, JP-A-64-23226, and JP-A-1-142617). The liquid crystal display device manufactured using these cells shows good shock resistance without disturbing the liquid crystal orientation even when a drop impact is applied. Could be damaged.

A conventional liquid crystal display element is constructed as shown in FIG. 10, which is a cross-sectional view schematically showing an enlarged part of the liquid crystal display element. That is, in FIG. 10, the liquid crystal display element 70 includes a transparent substrate 71 (for example, a glass substrate), a black mask 72, and a transparent electrode 73 (for example, IT).
O electrode) and the alignment film 74 are provided in this order, while the transparent electrode 76 and the alignment film 77 are provided in this order on the transparent substrate 75, and in the space between the alignment film 74 and the alignment film 77. The liquid crystal 78 is filled and configured. The transparent electrode 73 and the transparent electrode 76 are strip-shaped and intersect each other as shown in FIG. 11, which is a schematic plan view schematically showing a part of the liquid crystal display element 70 in an enlarged manner. Alignment film 74 and alignment film 77
And are joined by a dot-like joining portion 79.

In FIG. 11, only the transparent electrode 73, the transparent electrode 76, the black mask 72, and the bonding portion 79 in FIG. 10 are shown for easy understanding. Figure 1
1, the strip-shaped transparent electrode 73 and the strip-shaped transparent electrode 76
And intersect to form the pixel 80 at the electrode intersection. The joint portion 79 exists in some pixels, and the position of the joint portion 79 in the pixel 80 is not constant. Since the display state by the pixels changes depending on the presence or absence of the joint, the position, etc., the image quality may not be uniform throughout the liquid crystal display element and may be impaired.

[0007]

Provided is a liquid crystal display device having a uniform cell gap, excellent shock resistance, and excellent image quality uniformity.

[0008]

The present invention (first invention) is
A substrate (A) provided with a plurality of strip electrodes (A) and an alignment film in this order, and a substrate (B) provided with a plurality of strip electrodes (B) and an alignment film in this order (however, At least one of the substrates is a transparent substrate provided with a transparent strip electrode, and at least one of the substrates is provided with a strip-shaped or lattice-shaped black mask for partitioning pixels, and a strip-shaped electrode (A ) And the strip electrode (B) intersect to form a pixel, and the alignment films are arranged so as to face each other, and liquid crystal is sealed in the space between the alignment films. , A light-shielding portion is provided on the substrate at a position corresponding to 5% or more of the total number of pixels when viewed from the substrate plane side, and is aligned in a portion overlapping all or part of the light-shielding portion when viewed from the substrate plane side. A liquid crystal characterized in that a dot-like joint part formed by joining films is provided. Is 示素Ko.

The present invention (second invention) is a substrate (A) provided with a plurality of strip electrodes (A) and an alignment film in this order,
A color filter, a plurality of strip electrodes (C) and a substrate (C) provided with an alignment film in this order (provided that at least one of the substrates is a transparent substrate provided with a transparent strip electrode). , A strip-shaped or lattice-shaped black mask for partitioning pixels is provided on at least one of the substrates),
Matrix-type liquid crystal display in which the strip electrodes (A) and the strip electrodes (C) intersect to form pixels, and the alignment films are arranged so as to face each other, and liquid crystal is sealed in the voids between the alignment films. In the element, a light-shielding portion is provided on the substrate at a position corresponding to 5% or more of the total number of pixels when viewed from the substrate plane side, and overlaps all or part of the light-shielding portion when viewed from the substrate plane side. In part,
The liquid crystal display element is characterized in that a dot-shaped joint portion in which the alignment films are joined to each other is provided.

The preferred embodiments of the present invention are as follows. (1) The above-mentioned light-shielding portion is 50 to 50 when viewed from the plane side of the substrate.
The liquid crystal display device described above, which has a shape such as a polygon (for example, a quadrangle), a circle, an ellipse, and a fan having an area of 20000 μm ² .

(2) The liquid crystal display device as described above, wherein the light-shielding portion is provided integrally with the black mask or close to the black mask.

(3) The liquid crystal display device, wherein the light-shielding portion is provided on the substrate at a position corresponding to 50% or more of all pixels as viewed from the plane of the substrate. ..

(4) The liquid crystal display element, wherein the joint portion has a diameter of 7 μm or more when viewed from the plane side of the substrate and has a size smaller than the size of the light shielding portion.

(5) The dot-shaped joints are provided at portions corresponding to 0.1 to 100% of the total number of light-shielding portions of the black mask. Liquid crystal display device.

(6) The liquid crystal display device as described above, wherein the bonding agent is an adhesive alone or an adhesive containing a powder spacer (preferably spherical or rod-shaped).

(7) The liquid crystal display device as described above, wherein the bonding portion is formed by printing and solidifying the bonding agent on an alignment film provided on a substrate.

(8) The liquid crystal display device as described above, wherein the bonding agent is a photoresist and is formed by pattern exposure and development on an alignment film provided on a substrate.

(9) A substrate (A) having a plurality of strip electrodes (A) and an alignment film provided in this order on one surface, and a black mask, a plurality of strip electrodes (B) and an alignment film on one surface. Substrate (B) provided in this order (however, at least one of the substrates is a transparent substrate provided with a transparent strip electrode), and strip electrode (A) and strip electrode (B) intersect. In this matrix type liquid crystal display element, pixels are formed by arranging so that the alignment films face each other, and liquid crystal is sealed in the gaps between the alignment films. It has a lattice shape, and light-shielding portions of the same size that project from the lattice portion are formed at the same position in each space, and correspond to all or part of the light-shielding portion of the black mask when viewed from the substrate plane side. The spot-shaped joint where the alignment films are joined to each other The liquid crystal display device of the first invention characterized by being kicked.

(10) The color filter comprises a color filter group consisting of two or more color filters,
The liquid crystal display element according to the second aspect of the invention, wherein a group of strip electrodes (C) corresponding to the group of color filters and the strip electrodes (A) intersect to form pixels.

(11) A substrate (A) having a plurality of strip electrodes (A) and an alignment film provided in this order on one surface, and a black mask, a color filter, and a plurality of strip electrodes (C) on one surface. A plurality of electrode groups (D) and a substrate (C) provided with an alignment film in this order (provided that at least one of the substrates is a transparent substrate provided with a transparent strip electrode), Matrix-type liquid crystal display in which electrodes (A) and electrode groups (D) intersect to form pixel groups, alignment films are arranged so as to face each other, and liquid crystal is sealed in a space between the alignment films. An element, which has a lattice-like structure in which a black mask has a space corresponding to a unit pixel formed by intersecting the strip electrodes (A) and the strip electrodes (C), and is a space group corresponding to each pixel group. At the same position of the It is characterized in that a dot-like joint portion in which alignment films are joined to each other is provided in a portion corresponding to the light-shielding portion of all or part of the black mask when viewed from the substrate plane side. The liquid crystal display element of the second invention.

The present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is an enlarged schematic cross-sectional view of a part of an embodiment of the liquid crystal display element of the first invention. In FIG. 1, the liquid crystal display element 10 includes a transparent substrate (B) 11 (for example, a glass substrate), a black mask 12, a transparent electrode (B) 13 (for example, an ITO electrode), and an alignment film 14. On the other hand, the transparent electrode (A) 16 and the alignment film 17 are provided in this order on the transparent substrate (A) 15.
A liquid crystal 18 is filled in a space between the alignment film 14 and the alignment film 17. The alignment film 14 and the alignment film 17 are
It is joined by the joint portion 19 (for example, a dot shape). The transparent electrode (B) 13 and the transparent electrode (A) 16 are strip-shaped and intersect each other. Black mask 12
May be formed on either or both of the transparent substrate (A) and the transparent substrate (B). Black mask 12
In addition to the lattice-shaped one shown in the figure, it may be a belt-shaped one.

FIG. 2 is an enlarged schematic plan view of a part of the embodiment of the liquid crystal display device shown in FIG. Figure 2
In order to facilitate understanding of the features of the first invention, the transparent electrode (B) 13 and the transparent electrode (A) in FIG.
Only the black mask 16, the black mask 12, and the bonding portion 19 are shown. FIG. 1 is a sectional view taken along the line AA in FIG.

In FIG. 2, a strip-shaped transparent electrode (B) 13
And the strip-shaped transparent electrode (A) 16 intersect with each other to form a pixel 20 at the electrode intersection. FIG. 3 (a),
2B and 2C are enlarged plan views each illustrating an example of one pixel portion in FIG. 2. 2 and 3 (a)
In the above, the black mask 12 has a grid shape, and the grid portion is between the transparent electrodes (B) 13 and between the transparent electrodes (A).
It is located between 16 and the space portion is formed so as to correspond to the pixel 20. The black mask 12 further has a light-shielding portion 21 formed at one corner on the same side of all the spaces so as to project from the lattice intersection, and the light-shielding portions 21 are formed to have substantially the same size. Has been done. Alignment film 1
The joint portion 19 that joins 4 and the alignment film 17 is provided at a position directly above the light shielding portion 21 (overlapping the light shielding portion 21) when viewed from the substrate plane side.

The shape of the light-shielding portion 21 is not limited to the one having a square shape as shown in FIG. 3, and may be a triangle, a rectangle, a polygon, a fan, a circle, an ellipse or any other shape. Good. Further, it is preferable that the size of the light shielding portion has an area of 50 to 20000 μm ^{2 when} viewed from the plane side of the substrate. The light shielding portion 21 can be provided together with the black mask 12 when the black mask 12 is formed. The position where the light shielding portion 21 is provided is not necessarily limited to one corner of the pixel 20 as shown in FIG. 3, and may be provided at any position as long as it is the same position in all pixels of the liquid crystal display element. it can. The light shielding portion 21 may be provided separately from the black mask 12 as shown in FIG. For the reasons such as the aperture ratio of the pixel 20 and the ease of manufacturing the light shielding portion 21, the light shielding portion 21 has a structure shown in FIG.
As shown in (b) and (c), it is preferably provided at one corner of the pixel group.

The joint portion 19 may be provided on all the light shielding portions 21, or may be provided on a part of the light shielding portions 21, and in order to sufficiently perform the function of the joint portion, In general, it is preferable that the light-shielding portions 21 are provided on 0.1 to 100% of the total number of the light-shielding portions 21 so as to be evenly distributed over the entire surface of the liquid crystal display element. Further, the joint portion 19 is
As shown in FIG. 3C, it may be provided so as to straddle the black mask 12 and the light shielding portion 21.

Thickness of the joint portion 19 (the joint portion 19 shown in FIG. 1)
Height) is the same as the cell gap of a conventionally known liquid crystal display element, and the size of the joint portion 19 (diameter of the joint portion 19 shown in FIG. 3) viewed from the plane side of the substrate is Although it depends on the size, the size of the pixel, etc., in the case shown in FIG. 3A and FIG. 3B, it is necessary to be smaller than the size of the light shielding portion 21, but FIG. In such a case, it is necessary that the size is smaller than the total size of the light shielding portion 21 and the black mask 12. Further, the lower limit of the size of the joint portion 19 is not particularly limited, but the joint portion 1
If 9 is too small, it is necessary to increase the number of joints 19 in order not to reduce the shock resistance of the liquid crystal display element. Even if the number of joints 19 is appropriately reduced, the joints 19 are required. It is preferable to have a size having sufficient strength. Although the lower limit of the size of the bonding portion 19 varies depending on the type of bonding agent used, it is generally preferable that the bonding portion 19 has a diameter of 7 μm or more. The shape of the joining portion 19 is not limited to the shape having a circular shape as shown in FIG. 3, and may be a shape having a triangle, a rectangle, a square, a polygon, a fan, an ellipse or the like.

As the bonding agent for forming the joint portion 19 and the method for forming the joint portion 19, those described in the above-mentioned patent publications filed by the present applicant can be adopted. ..

For example, the bonding agent is an adhesive (preferably,
(A thermosetting adhesive, an ultraviolet curable adhesive, etc.) may be used alone, but this adhesive contains a spacer in the form of powder of an inorganic or organic substance (preferably spherical or rod-shaped) The bonding agent is preferable because the cell gap can be easily controlled.

Such a bonding agent is printed on the alignment film 14 or the alignment film 17 by a method such as letterpress printing, lithographic printing, intaglio printing, stencil printing, screen printing, and the like, and is solidified to form the bonding portion 19. Can be formed.

Further, a photoresist is used as a bonding agent, and a pattern exposure is performed on the alignment film 14 or the alignment film 17.
By developing, drying, laminating and post-heating, the joint part 1
9 can also be formed.

In the liquid crystal display device according to the first aspect of the present invention, the black mask has a specific shape, and the facing alignment films are bonded to each other by a bonding portion existing at a specific position. A substrate, an electrode, an alignment film, other components such as a liquid crystal, other components used in the display element, other structures of the liquid crystal display element, a manufacturing method thereof, a driving method of the liquid crystal display element and the like can be used. For example, at least one of the two substrates of the liquid crystal display element of the first invention is a transparent substrate provided with a transparent strip electrode, and in addition to the configuration of the liquid crystal display element illustrated above, an insulating film and a smooth film. May be provided.

Since the liquid crystal display element of the first invention has the light shielding portion 21 in addition to the black mask 12, the light transmission area of the pixel 20 is slightly smaller than that in the case where the light shielding portion 21 is not provided. Decrease. However, the light shielding portion 21 generally has the above-described size, and for example,
In a general liquid crystal display device in which the transparent electrode (B) 13 and the transparent electrode (A) 16 each have a width of 300 μm, when the light shielding portion 21 has a square shape of 50 μm × 50 μm, the area of the light shielding portion 21 is About 2.8% of the area of the pixel 20
However, the brightness of the liquid crystal display element does not substantially decrease.

In the liquid crystal display element of the first invention, the light shielding portion 21 is provided on the substrate at a position corresponding to 5% or more of the total number of pixels as viewed from the plane of the substrate. Shading part 2
The ratio of pixels provided with 1 to the total number of pixels is 50%
It is preferably at least above, and more preferably substantially 100%. For example, as shown in FIG. 4, the light shielding portion 21 may be arranged in a part of the pixels 20 with a predetermined regularity. The reference numbers shown in FIG. 4 mean the same reference numbers as shown in FIG.

In the liquid crystal display device of the first aspect of the invention, when the light shielding portion 21 is provided in the portion corresponding to all the pixels 20, all the pixels have the same shape, so that the image quality varies. A uniform image can be obtained without causing Since the joint portion 19 is provided so as to overlap the light shielding portion 21 when viewed from the plane side of the substrate, the joint portion 19 does not affect the pixels at all, and the joint portion 19 is the same as in the conventional liquid crystal display element. By providing the portion, there is no possibility that the display performance will change between pixels, and a uniform image quality can be obtained by the liquid crystal display element of the first invention. The joint portion 19 can be provided by using the same material and method as those in the conventional liquid crystal display element, and the original performance of the joint portion that imparts shock resistance to the liquid crystal display element may be impaired. Of course there is nothing.

Next, the liquid crystal display device of the second invention will be described in detail. FIG. 5 is an enlarged schematic sectional view of a part of an embodiment of the liquid crystal display device of the second invention. In FIG. 5, the liquid crystal display element 30 includes a transparent substrate (C) 31.
A black mask 32, a color filter 33, a transparent electrode (C) 34 (for example, I
(TO electrode) and the alignment film 35 are provided in this order, while the transparent electrode (A) 37 and the alignment film 38 are provided in this order on the transparent substrate (A) 36, and the alignment film 35 and the alignment film 38 are provided.
The liquid crystal 39 is filled in the space between and.
The alignment film 35 and the alignment film 38 are bonded by a bonding portion 40 (for example, a dot shape). Color filter 33
Is a color filter 33R, 33B, 33G, 33
They are provided in the order of R, 33B, 33G .... The transparent electrodes (C) 34 are the color filters 33, respectively.
Transparent electrodes (C) 34R, 34B, and 34G provided on R, 33B, and 33G are combined to form a set of electrode group (D) 41. Transparent electrode (C) 3
4 and the transparent electrode (A) 37 are strip-shaped and intersect each other.

FIG. 6 is an enlarged schematic plan view of a part of the embodiment of the liquid crystal display device shown in FIG. Figure 6
In order to facilitate understanding of the features of the second invention, the transparent electrodes (C) 34R, 34B and 3 in FIG.
Only 4G, the transparent electrode (A) 37, the black mask 32, and the joint portion 40 are shown. FIG. 5 shows B- in FIG.
It is a B line sectional view.

In FIG. 6, a strip-shaped transparent electrode (C) 34
R, 34B and 34G intersect the strip-shaped transparent electrode (A) 37, and unit pixels 42R and 42B are formed at the electrode intersections.
And 42G to form unit pixels 42R, 42B and 42
G is combined to form one pixel group 43.
FIG. 7 is an enlarged plan view showing a portion of one pixel group in FIG.

In FIGS. 6 and 7, the black mask 3
2 has a lattice shape, and the lattice portion has a transparent electrode (C) 34R,
It is located between 34B and 34G and between transparent electrodes (A) 37, and the space portion is formed so as to correspond to the unit pixels 42R, 42B, and 42G. Unit pixel 42
R, 42B and 42G combine to form a set of pixels 43
Are configured. That is, the transparent electrodes (C) 34R, 34B
And a 34G combination of a pair of electrode groups (D) 41
And the transparent electrode (A) 37 cross each other to form a set of pixels 43. The black mask 32 is further provided with a space group (unit pixels 42R, 4R, 4G) formed so as to correspond to the pixels 43.
2B and 42G) (a combination of spaces formed corresponding to 2B and 42G) has a light shielding portion 44 formed at one corner on the same side so as to project from the lattice intersection. That is, the light shielding portion 44 is provided in the space of the black mask 32 corresponding to the unit pixel 42R in one pixel 43, and the light shielding portion is provided in the space of the black mask 32 corresponding to the unit pixels 42B and 42G. 44 is not provided.
All the light shielding portions 44 are formed to have substantially the same size. The joint portion 40 that joins the alignment film 35 and the alignment film 38 is provided at a position directly above the light shielding portion 44 (overlapping the light shielding portion 44) when viewed from the substrate plane side.

The shape of the light-shielding portion 44 is not limited to the one having a square shape as shown in FIG. 7, and may be a triangle, a rectangle, a polygon, a fan, a circle, an ellipse or any other shape. Good. Further, it is preferable that the size of the light shielding portion has an area of 50 to 20000 μm ^{2 when} viewed from the plane side of the substrate. The light shielding portion 44 can be provided together with the lattice portion when the black mask 32 is formed. The position where the light shielding portion 44 is provided is not necessarily limited to one corner of the pixel 43 as shown in FIG. 7, and may be provided at any position as long as it is the same position in all pixels of the liquid crystal display element. it can. The light shielding portion 44 may be provided apart from the black mask 32 as described in the first aspect of the invention. For reasons such as the aperture ratio of the pixel 43 and the ease of manufacturing the light shielding portion 44, the light shielding portion 44 is preferably provided at one corner of the pixel as shown in FIG.

The joint portion 40 may be provided on all the light shielding portions 44, but may be provided on a part of the light shielding portions 44, and in order to fully perform the function of the joint portion, Generally, it is preferable that the light-shielding portions 44 are provided on 0.1-100% of the total number of the light-shielding portions 44 so as to be evenly distributed over the entire surface of the liquid crystal display element. In addition, the joint portion 40 is
You may provide so that it may straddle the black mask 32 and the light shielding part 44.

The material, size, forming method, etc. of the joint 40 are the same as those described above for the joint 19 in the first invention.

In the liquid crystal display device of the second invention, the order of the color filters 33R, 33B and 33G, and correspondingly, the unit pixels 42R, 42B and 42G in one pixel are arranged.
The order of is not limited to the above, and may be any order. Further, the types of color filters are not limited to the above three types, and may be two types or four or more types.

In the liquid crystal display device according to the second invention, the black mask has a specific shape, and the facing alignment films are bonded to each other by a bonding portion existing at a specific position. Similar to the liquid crystal display element of the invention, substrates, electrodes, alignment films, liquid crystal and other components used in conventional liquid crystal display elements, other structures of liquid crystal display elements, methods for manufacturing them, and driving of liquid crystal display elements. A method or the like can be used.

In the liquid crystal display element of the second invention, since the black mask 32 has the light shielding portion 44, the light transmission area of the pixel 43 is slightly reduced as compared with the case where the light shielding portion 44 is not provided. .. However, the light-shielding portion 44 generally has the above-described size, and the area of the light-shielding portion 44 is about 2.8% of the area of the pixel 43, as described in the liquid crystal display element of the first invention. However, the brightness of the liquid crystal display element does not substantially decrease. In FIG. 7, the light transmission area of the unit pixel 42R is smaller than the light transmission area of the unit pixels 42B and 42G. However, by changing the width of each color filter or the width of the strip electrode (C), It is possible to make the light transmission amounts of all the unit pixels the same, and the difference in the light transmission area in the unit pixels does not pose a problem.

In the liquid crystal display element of the second invention, the light shielding portion 44 is provided on the substrate at a position corresponding to 5% or more of the total number of pixels as viewed from the substrate plane side. Shading part 4
The ratio of the pixels provided with 4 to the total number of pixels is 50%.
It is preferably at least above, and more preferably substantially 100%. For example, the light blocking portions 44 may be arranged in a part of the pixels 43 with a predetermined regularity.

On the other hand, in the liquid crystal display element of the second invention,
Since the light shielding portion 44 is provided in the portion corresponding to all the pixels 43 and all the pixels have the same shape, a uniform image can be obtained without causing a variation in image quality. Further, since the joint portion 40 is provided so as to overlap with the light shielding portion 44 when viewed from the plane side of the substrate, the joint portion 40 does not affect the pixels at all, and the joint portion 40 is the same as in the conventional liquid crystal display element. By providing the portion, there is no possibility that the display performance will change between pixels, and a uniform image quality can be obtained by the liquid crystal display element of the second invention. The joint portion 40 can be provided by using the same material and method as in the conventional liquid crystal display element, and the original performance of the joint portion to impart shock resistance to the liquid crystal display element may be impaired. Of course there is nothing.

[0047]

EXAMPLES Next, the present invention will be described in more detail by way of examples.

[Example 1] Glass substrate (100 mm square)
A black matrix having the basic pattern shown in FIG. 8 is formed thereon by a sputtering method, and a segment electrode (transparent electrode) is formed thereon by patterning with a width of 300 μm by a photolithography method, and a polyimide resin LQ- is formed thereon.
1800 (manufactured by Hitachi Chemical Co., Ltd.) was applied by a spin coater, dried, and then rubbed to form an alignment film, thereby forming a substrate (A).

A common electrode (transparent electrode) having a width of 3 is formed on another glass substrate (100 mm square) by photolithography.
A substrate (B) was prepared by patterning to a thickness of 00 μm, and forming an alignment film thereon in the same manner as the substrate (A).

In order to form a joint, 1.8 μm of true spheres (manufactured by Catalysis Kasei Co., Ltd.) was kneaded into one substrate with a bonding agent Struct Bond XN-5A (manufactured by Mitsui Toatsu Co., Ltd.) for 10 minutes. The bonding agent adjusted to a weight% was printed in a dot pattern having a diameter of 60 μm by screen printing in a dot pattern such that the bonding portion overlaps the protruding portion (light shielding portion) of the black matrix when the substrates are bonded together.

A peripheral sealant having a width of 2 is formed around the other substrate.
mm, and a part of the peripheral seal was cut out to form an injection port.

The two substrates thus formed are aligned so that the alignment films face each other and the transparent electrodes provided on the respective substrates are orthogonal to each other, and the bonding portion is formed on the protruding portion (light-shielding portion) of the black matrix. The cell was prepared by positioning so as to come into contact with the surface and heating and pressure bonding.

The liquid crystal DOF0004 is introduced into the inlet of this cell.
(Manufactured by Dainippon Ink and Chemicals, Inc.) and brought the cell temperature to 1
When the cell was inspected by injecting liquid crystal while keeping it at 00 ° C,
All joints are black matrix protrusions (light shields)
The difference between pixels due to the junction was not observed.

[Example 2] Glass substrate (100 mm square)
A black matrix having the basic pattern shown in FIG. 9 is formed on the top by a sputtering method, and three color filters of red (R), blue (B), and green (G) are formed on the black matrix as shown in FIG. The pattern 1 is formed by photolithography so that the region 1 is green, the region 2 is red, and the region 3 is blue.
A protective film of polyimide resin was formed thereon with a spin coater to a thickness of 2 μm. A segment electrode (transparent electrode) is patterned thereon by a photolithography method with a width of 130 μm and an interval of 20 μm, and a polyimide resin LQ-1800 (manufactured by Hitachi Chemical Co., Ltd.) is applied thereon by a spin coater, dried, and then rubbed. Then, the alignment film was formed to prepare the substrate (A).

A common electrode (transparent electrode) having a width of 3 is formed on another glass substrate (100 mm square) by photolithography.
A substrate (B) was prepared by patterning to a thickness of 00 μm, and forming an alignment film thereon in the same manner as the substrate (A).

In order to form a bonded portion, 1.8 μm of true spheres (manufactured by Catalyst Kasei Co., Ltd.) was kneaded into one substrate with a bonding agent Structbond XN-5A (manufactured by Mitsui Toatsu Co., Ltd.) for 10 minutes. The bonding agent adjusted to a weight% was printed in a dot pattern having a diameter of 60 μm by screen printing in a dot pattern such that the bonding portion overlaps the protruding portion (light shielding portion) of the black matrix when the substrates are bonded together.

A peripheral sealant having a width of 2 is formed around the other substrate.
mm, and a part of the peripheral seal was cut out to form an injection port.

The two substrates thus formed are aligned such that the alignment films face each other and the transparent electrodes provided on the respective substrates are orthogonal to each other, and the bonding portion is formed on the protruding portion (light shielding portion) of the black matrix. The cell was prepared by positioning so as to come into contact with the surface and heating and pressure bonding.

The liquid crystal DOF0004 is introduced into the inlet of this cell.
(Manufactured by Dainippon Ink and Chemicals, Inc.) and brought the cell temperature to 1
When the cell was inspected by injecting liquid crystal while keeping it at 00 ° C,
All joints are black matrix protrusions (light shields)
The difference between pixels due to the junction was not observed.

[0060]

The liquid crystal display device of the present invention is a liquid crystal display device which exhibits the remarkable effects of uniform cell spacing, excellent shock resistance, and excellent image quality homogeneity.

[Brief description of drawings]

FIG. 1 is an enlarged schematic cross-sectional view of a part of an embodiment of a liquid crystal display element of the first invention.

FIG. 2 is an enlarged schematic plan view of a part of the embodiment of the liquid crystal display element shown in FIG.

3 (a), (b) and (c) are enlarged plan views showing one pixel portion of FIG. 2, respectively.

FIG. 4 is an enlarged schematic plan view showing a part of another embodiment of the liquid crystal display element of the first invention.

FIG. 5 is a cross-sectional view schematically showing an enlarged part of an embodiment of the liquid crystal display element of the second invention.

6 is an enlarged schematic plan view of a part of the embodiment of the liquid crystal display element shown in FIG.

FIG. 7 is a plan view showing a part of one pixel in FIG. 6 in an enlarged manner.

FIG. 8 is a plan view schematically showing the basic pattern of the black mask in the first embodiment.

FIG. 9 is a plan view schematically showing a basic pattern of a black mask in Example 2.

FIG. 10 is a cross-sectional view schematically showing an enlarged part of a conventional liquid crystal display element.

FIG. 11 is a plan view schematically showing a part of the liquid crystal display element shown in FIG. 10 in an enlarged manner.

[Explanation of symbols]

 10 Liquid Crystal Display Element 11 Transparent Substrate (B) 12 Black Mask 13 Transparent Electrode (B) 14 Alignment Film 15 Transparent Substrate (A) 16 Transparent Electrode (A) 17 Alignment Film 18 Liquid Crystal 19 Bonding Section 20 Pixel 21 Light Shielding Section 30 Liquid Crystal Display Element 31 Transparent substrate (C) 32 Black mask 33 Color filter 34 Transparent electrode (C) 35 Alignment film 36 Transparent substrate (A) 37 Transparent electrode (A) 38 Alignment film 39 Liquid crystal 40 Bonding part 41 Electrode group (D) 42 Unit Pixel 43 Pixel 44 Light-shielding part 70 Liquid crystal display element 71 Transparent substrate 72 Black mask 73 Transparent electrode 74 Alignment film 75 Transparent substrate 76 Transparent electrode 77 Alignment film 78 Liquid crystal 79 Bonding part

Claims (2)

[Claims] 1. A substrate (A) provided with a plurality of strip electrodes (A) and an alignment film in this order, and a substrate (B) provided with a plurality of strip electrodes (B) and an alignment film in this order. ) And (provided that at least one of the substrates is a transparent substrate provided with a transparent strip electrode, and at least one of the substrates is provided with a strip-shaped or lattice-shaped black mask for partitioning pixels). A matrix type liquid crystal in which the strip electrodes (A) and the strip electrodes (B) cross each other to form pixels, and the alignment films are arranged so as to face each other, and liquid crystal is sealed in the voids between the alignment films. In the display element, a light-shielding portion is provided on the substrate at a position corresponding to 5% or more of all the pixels when viewed from the substrate plane side, and the light-shielding portion is provided on all or part of the light-shielding portion when viewed from the substrate plane side. The point-like joint part that joins the alignment films is provided in the overlapping part. Liquid crystal display element to be considered. 2. A substrate (A) provided with a plurality of strip electrodes (A) and an alignment film in this order, a color filter, a plurality of strip electrodes (C) and an alignment film provided in this order. Substrate (C) (provided that at least one of the substrates is a transparent substrate provided with transparent strip electrodes, and at least one of the substrates is provided with a strip-shaped or lattice-shaped black mask for partitioning pixels. The strip-shaped electrode (A) and the strip-shaped electrode (C) intersect to form a pixel, and the alignment films are arranged so as to face each other, and liquid crystal is sealed in the space between the alignment films. In the matrix type liquid crystal display element, a light-shielding portion is provided on the substrate at a position corresponding to 5% or more of the total number of pixels when viewed from the substrate plane side, and the light-shielding portion when viewed from the substrate plane side or A dot-shaped joint that joins the alignment layers is provided in the part that overlaps A liquid crystal display device characterized by being provided.