JP2001083538A - Liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce or eliminate the generation of interference fringes. SOLUTION: A projecting arrangement group, in which large number of projecting parts 3a are arranged, is formed on a glass substrate 2 and a liquid reflecting layer 4 covers thereon and an alignment layer 5 covers the light reflecting layer 4. Further a color filter 7, an overcoat layer 8, a transparent electrode 9 and an oriented film 10 are formed on a glass substrate 6. Then both substrates 2, 6 are stuck together by a sealing member 12 via liquid crystal 11. As to the projecting arrangement group, each group is formed by being divided to a matrix shape but the projecting arrangement group is divided depending on arrangement pitch of the transparent electrode 9 and arrangement pitch of an electrode 26. Thus, each rectangular region of matrix shape (a group) corresponds to a crossing part of the transparent electrode 9 and the electrode 26.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art In recent years, liquid crystal display devices have been used for large and high-definition monitors in addition to small or medium-sized portable information terminals and notebook computers. Further, a technology of a reflective liquid crystal display device that does not use a backlight has been developed, and is excellent in thinness, light weight, and low power consumption.

[0003] The reflection type liquid crystal display device has a function-separated type in which a mirror-reflected light reflecting layer is provided on the inner surface of a substrate provided behind and a scattering plate is provided outside the substrate provided in front. There is a scattering-reflection type in which a light reflection layer having an uneven shape is formed on the inner surface of the substrate disposed in the above-mentioned type. Both types effectively use ambient light by not using a backlight.

FIG. 6 shows a scattering-reflection type liquid crystal display device (see Japanese Patent Application Laid-Open No. 4-243226). In the liquid crystal display device 1, a plurality of substantially hemispherical convex portions 3 made of resin are arranged on a glass substrate 2 to form a convex array group, and the light reflecting layer 4 made of metal is formed on the convex array group. And the light reflecting layer 4
A color filter 7 is formed on a glass substrate 6, an overcoat layer 8 is coated on the color filter 7, and a transparent electrode 9 made of ITO or the like is formed on the overcoat layer 8. Are arranged in a strip shape, and the alignment film 10 is further covered. Then, both substrates are disposed to face each other with the liquid crystal 11 interposed therebetween. The liquid crystal 11 is filled in a region surrounded by the seal member 12, and the first retardation film 13 and the second retardation film 14 and polarizing plate 15
Are sequentially formed.

In the liquid crystal display device 1, to form a convex array group, a photosensitive resin is spin-coated on a glass substrate 2 as shown in FIG. 7, and a photomask 16 having an array as shown in FIG. Exposure using. This photomask 1
According to No. 6, circular spots 18 made of chromium (Cr) metal or iron oxide are regularly arranged on a glass substrate 17, and by using the photomask 16 having this configuration, the spots 18 are formed. A convex array group is formed in accordance with the pattern corresponding to the arrangement site.

The individual convex portions 3 are post-baked and cured after photoetching, and then an Al film is coated on the convex array group by sputtering and photoetched. The Al film has a number of bands arranged in parallel, and each band-like film corresponds to an individual electrode (light reflection layer 4).

In this group of convex arrays, it is preferable to form the convex sections 3 densely, whereby the surface area of the light reflecting layer 4 is increased, and the incident light is effectively used. The gap area is reduced, and the degree of light scattering is improved. Then, in order to perform such a dense arrangement, the convex portions 3 are regularly aligned.

[0008]

However, in the configuration of the liquid crystal display device 1, rainbow-colored interference fringes due to the phase difference of light can be seen by arranging the projections 3 densely and regularly.

In order to solve this problem, it is conceivable to arrange all the projections 3 at random, but it is extremely difficult to obtain such randomness in manufacturing.
In particular, when the size of the liquid crystal screen is large, it cannot be manufactured.

Therefore, a photomask 1 as shown in FIG.
9 has been proposed. That is, a group in which the spots 21 are randomly arranged on the glass substrate 20 is made into one group 22, and the groups 22 are further arranged regularly.

However, the photomask 1 having the above structure
Even when the group 9 is used, since the groups 22 are arranged in an array, interference appears between the color filter 7 and the transparent electrode 9 and the like. Was. In addition, when displayed indoors, light interference is hardly noticeable, but when displayed outdoors, ambient light is strong, so that light interference has become remarkable.

As described above, the coherence of light has not yet been eliminated to a satisfactory extent, the visibility of display has deteriorated, and good display characteristics have not been achieved.

Accordingly, an object of the present invention is to provide a high-performance and high-reliability liquid crystal display device by remarkably reducing or eliminating the occurrence of such interference fringes.

[0014]

According to the liquid crystal display device of the present invention, a convex array group in which a plurality of resin convex portions are randomly arranged is formed on one main surface of a substrate. Between the one member formed by laminating an alignment layer on the light reflective electrode and the other member formed by sequentially laminating a transparent electrode and an alignment layer on a transparent substrate. A device in which pixels are arranged in a matrix with a nematic liquid crystal interposed therebetween, wherein the arrangement pitch is a divisor or a multiple of the arrangement pitch of one member on a light-reflective electrode, and / or the arrangement pitch of the other member on a transparent electrode. The convex array group is divided according to a divisor or a multiple of the above.

In another liquid crystal display device according to the present invention, a convex array group in which a plurality of resin protrusions are randomly arranged is formed on one main surface of a substrate, and a light reflecting film is formed on the convex array group. Coating,
A nematic liquid crystal is interposed between one member formed by sequentially laminating a transparent electrode and an alignment layer on a light reflection film and the other member formed by sequentially laminating a transparent electrode and an alignment layer on a transparent substrate. A pixel arranged in a matrix in a matrix, wherein the number of pixels is adjusted to a divisor or a multiple of the arrangement pitch of the transparent electrodes of one member and / or a divisor or a multiple of the arrangement pitch of the transparent electrodes of the other member. Thus, the convex array group is divided.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to a reflection type liquid crystal display device shown in FIGS. FIG. 1 is a photomask for forming a convex array group, FIG. 2 is an enlarged view of a main part of A shown in FIG. 1, and FIG. 3 is a schematic sectional view of a reflection type liquid crystal display device. FIG. 4 is a schematic cross-sectional view of another reflective liquid crystal display device, and FIG. 5 is a perspective view of a main part of another reflective liquid crystal display device. The same parts as those of the conventional liquid crystal display device 1 shown in FIG.

Photomask First, FIGS. 1 and 2 show a photomask 2 for forming the convex array group in which a plurality of resin convex portions are randomly arranged.
3 is shown.

A photomask 23 is formed on a glass substrate 24 by C
r A number of circular spots S made of metal, iron oxide, or the like are arranged. These spot arrangements are in a random state, and are adjusted to both the arrangement pitch on the signal electrode side and the arrangement pitch on the scan electrode side. Then, a group G corresponding to each pixel is obtained.

As a specific example, a case where the image display surface has a size of 5.7 inches will be described. The shape of each spot S in which about 10 million spots are arranged on the glass substrate 24 corresponding to one display surface is described. May be a quadrangle, a pentagon, a hexagon, or even a polygon other than a circle, but is preferably a circle so that the scattering characteristics do not differ depending on the viewing direction.

It is desirable to define the spot diameter and the spot interval as follows.

The spot diameter is 50 μm or less, preferably 15 μm.
A thickness of less than μm is advantageous in that the resist film thickness when forming the same shape can be reduced.

By setting the interval between the spots to 0.1 to 20 μm, preferably 5 to 7 μm, the uneven shape is continuously connected after exposure and development, whereby the flat portion can be reduced, and good scattering characteristics can be obtained. Is good.

[0023] illustrating the reflection type liquid crystal display device 25 for color display shown in the reflection type liquid crystal display device 3. FIG. 2 is a segment side glass substrate (0.7 mm
Thickness) and 6 are glass substrates (0.7 mm thick) on the common side. As for the one member, a substantially hemispherical convex portion 3a (diameter: 10 mm) made of resin is formed on one main surface of the glass substrate 2.
To 12 μm), a convex array group is formed, and the light reflective layer 4 made of a metal such as chromium, aluminum, or silver is coated on the convex array group with a thickness of 1000 ° and photo-etched. I have. The light reflection layer 4 has a large number of bands arranged in parallel, and each band film corresponds to an individual electrode 26.

In order to form a convex array on the glass substrate 2, a photosensitive resin mainly composed of an acrylic resin (product:
PC339H (manufactured by JSR Corporation) is spin-coated with a thickness of about 2 μm, exposed using the photolithography mask, and then developed for 20 seconds (developer PD)
539AD / JSR Corporation). This development condition is a time until development to the glass substrate 2 is not completed. Then, it is slightly melted by post baking (120 ° C., 2 minutes) to smooth the surface shape, finely adjust the uneven shape, and further at a high temperature (200 ° C., 3 minutes).
0 minutes) Let it cure. Thus, each group G is divided and formed in a matrix, and the convex portions 3a are randomly arranged in each group G.

Then, an alignment film 5 made of a polyimide resin rubbed in a certain direction is coated on the light reflection layer 4.

Further, a smooth film of an insulating material made of resin or SiO _{2 is} formed between the convex array group covering the light reflecting layer 4 and the alignment film 5 by a printing method, a spinner method, a sputtering method or a dipping method. Thus, the entire surface is covered, whereby short-circuiting between the upper and lower substrates and short-circuiting of the adjacent electrode (light reflection layer 4) can be prevented. Further, when the printing method is used, even if the above-mentioned insulating material is laminated only on the light reflection layer 4, these short circuits can be prevented. To do that).

As for the other member, the glass substrate 6
A color filter 7 arranged for each pixel is formed above. The color filter 7 is formed by a pigment dispersion method, that is, a method in which a photosensitive resist prepared in advance with pigments (red, green, and blue) is applied on a substrate, and photolithography is performed. An overcoat layer 8 made of an acrylic resin and a plurality of transparent electrodes 9 made of ITO are formed thereon in parallel. The transparent electrode 9 is orthogonal to the electrode 26. However, the overcoat layer 8 is not indispensable, and the overcoat layer 8 may be omitted by forming the transparent electrode 9 directly on the color filter 7. Further, an alignment film 10 made of a polyimide resin rubbed in a certain direction is formed on the transparent electrode 9. The alignment film 1
No. 0 is formed directly on the transparent electrode 9, but the alignment film 1
An insulating film made of resin, SiO _2, or the like may be interposed between the transparent electrode 9 and the transparent electrode 9.

Then, one member and the other member having the above-described structure are bonded together by a seal member 12 via a liquid crystal 11 made of a chiral nematic liquid crystal twisted at an angle of, for example, 200 to 260 °. A large number of spacers are arranged between the two members to keep the thickness of the liquid crystal 11 constant.

Further, a first retardation film 13 made of polycarbonate or the like, a second retardation film 14, and an iodine-based polarizing plate 15 are sequentially formed on the outside of the glass substrate 6. About these arrangement | positioning, it sticks by applying the adhesive material which consists of an acrylic material.

In the liquid crystal display device 25 having the above structure,
Incident light from external lighting such as sunlight or fluorescent light is polarized
5, second retardation film 14, first retardation film 13
, Further pass through the glass substrate 6, reach the light reflection layer 4 through the color filter 7 and the liquid crystal 11, are reflected by the light reflection layer 4, and the reflected light is emitted.

According to the present invention, in the liquid crystal display device 25 having such a configuration, in forming the convex array groups on the glass substrate 2 and forming each group G in a matrix, the transparent electrodes 9 are formed. The convex array group is divided in accordance with the arrangement pitch of the electrodes 26 and the arrangement pitch of the electrodes 26, whereby each rectangular area (group G) in a matrix is formed.
Correspond to the intersection of the transparent electrode 9 and the electrode 26.

Thus, according to the liquid crystal display device 25, the convex arrangement group is divided according to the arrangement pitch of the transparent electrodes 9 and the arrangement pitch of the electrodes 26, and each rectangular region of the matrix is defined as the transparent electrode 9 Corresponding to the intersection with the electrode 26, interference between the transparent electrode 9, the electrode 26, and the color filter 7 did not appear, and even when used outdoors, light interference did not appear. .

In the present invention, each of the matrix-shaped rectangular regions of the convex array group is defined by the transparent electrode 9 and the electrode 2.
6 and a divisor or multiple (2, 3, 4 or 5 times) of the arrangement pitch of the transparent electrodes 9.
Times. . . ), The segments of the convex array group may be combined. Alternatively, a divisor or multiple of the arrangement pitch of the electrodes 26 (twice,
3 times, 4 times, 5 times. . . ), The division of the convex arrangement group may be matched, and further, a divisor or multiple of the arrangement pitch of the transparent electrodes 9 and a divisor or multiple of the arrangement pitch of the electrodes 26 may be combined.

The divisor of the arrangement pitch of the transparent electrodes 9 and the electrodes 26 is defined by a divisible numerical value defined mathematically, and the arrangement pitch is 49 μm (49000 nm).
For example, 49 μm (49000 nm), 2
4.5 μm (24500 nm), 12.25 μm (12
250 nm). . . . And so on. If the arrangement pitch is 80 μm, for example, 80 μm, 40 μm
m, 20 μm, 16 μm, 10 μm, 8 μm, 5 μm,
4 μm, 2 μm, 1 μm. . . . Is a divisor.

Another reflection type liquid crystal display device In the reflection type liquid crystal display device 27 for color display shown in FIGS. 4 and 5, reference numeral 28 denotes a common side glass substrate (0.
7 mm), 29 is a glass substrate (0.7 mm) on the segment side.
mm), and the one member has a random number similar to that of the liquid crystal display device 25 by arranging a large number of substantially hemispherical convex portions 3b made of resin on one main surface of the glass substrate 28. A convex reflection array is formed, and a light reflection layer 4a (thickness: 1000 °) made of a metal such as chromium, aluminum, or silver is coated on the convex arrangement. Then, a smooth film 30 made of resin or SiO ₂ is formed on the convex array group.
Are formed, and a color filter 7 arranged for each pixel is formed on the smoothing film 30. Further, an overcoat layer 8 made of an acrylic resin and a plurality of transparent electrodes 31 made of ITO arranged in parallel are formed. This transparent electrode 31
An alignment film 32 made of a polyimide resin rubbed in a certain direction is formed thereon.

Although the alignment film 32 is formed directly on the transparent electrode 31, an insulating film made of resin or SiO ₂ may be interposed between the alignment film 32 and the transparent electrode 31. Moreover, the smooth film 30 and the overcoat layer 8 may not be provided.

As for the other member, a transparent electrode 33 made of ITO arranged in parallel on a glass substrate 29,
An alignment film 34 made of a polyimide resin rubbed in a certain direction is sequentially formed. Transparent electrode 33 and alignment film 34
And an insulating layer made of SiO ₂ may be interposed therebetween.

Then, one member and the other member of the above-described configuration are bonded together with a seal member 12 via a liquid crystal 11. Further, a first retardation film 13 made of polycarbonate or the like, a second retardation film 14, and an iodine-based polarizing plate 15 are sequentially formed on the outside of the glass substrate 29.

In the liquid crystal display device 27 having the above structure,
Incident light from external illumination such as sunlight or fluorescent light passes through the glass substrate 29, reaches the light reflection layer 4a through the liquid crystal 11, the color filter 7, and the like, is reflected by the light reflection layer 4a, and the reflected light is reflected. Is emitted.

In the liquid crystal display device 27 having such a configuration as well, when forming the convex arrangement groups on the glass substrate 28, each group G is divided and formed in a matrix, but the arrangement of the transparent electrodes 31 is further increased. Pitch and transparent electrode 3
The convex array group is divided in accordance with the arrangement pitch of the transparent electrodes 3 and the transparent electrodes 31 and the transparent electrodes 3.
3, the interference between the transparent electrode 31, the transparent electrode 33, and the color filter 7 disappears, and the interference of light even when used outdoors. No longer appear.

Also, in the present invention, each of the matrix-shaped rectangular regions of the convex arrangement group is formed by the transparent electrode 31.
In addition to the correspondence with the intersection between the transparent electrode 33 and the transparent electrode 33, the division of the convex array group may be matched by a divisor or a multiple of the arrangement pitch of the transparent electrode 31. Alternatively, the division of the convex array group may be matched by a divisor or a multiple of the arrangement pitch of the transparent electrodes 33, and further, a divisor or a multiple of the arrangement pitch of the transparent electrodes 31 and a divisor of the arrangement pitch of the transparent electrodes 33. Or you may combine with a multiple.

Next, the present inventor has determined that one pixel is 70 μm × 23.
For the area of 0 μm (intersection between the transparent electrode 31 and the transparent electrode 33), the matrix-shaped formation of the convex array group on the glass substrate 28 is changed in nine ways (1) to (9). Then, interference fringes were visually observed. Transparent electrode 31
Is 240 μm, the pitch of the transparent electrodes 33 is 80 μm, the width direction of the transparent electrode 31 is the Y direction, and the width direction of the transparent electrode 33 is the X direction. Here, the distance between the adjacent transparent electrodes 31 and 33 was 10 μm.

(1) When the width of the group G in the X direction is 80 μm and the width in the Y direction is 240 μm as described above. (2) As described above, the width of the group G in the X direction is 80 μm.
When the Y direction width is 80 μm (3) The X direction width of the group G is 40 μm and the Y direction width is 6
(4) When the X direction width of the group G is 160 μm and the Y direction width is 120 μm (5) When the X direction width of the group G is 480 μm and the Y direction width is 480 μm (6) The group G X direction width is 40 μm, Y direction width is 4
(7) When the width of the group G in the X direction is 100 μm and when the width in the Y direction is 240 μm (8) The width of the group G in the X direction is 80 μm and the width in the Y direction is 1
(9) When the width of the group G in the X direction is 100 μm and the width in the Y direction is 100 μm As a result, in the cases of (1) to (6), almost no interference fringes were generated. In the case of (7) and the example of (8), interference fringes slightly occurred, but they were practically no problem. However, in the case of (9), interference fringes were remarkably generated, and there was a problem in practical use. In the present invention, the examples (7) and (8) are also included.

Transflective Liquid Crystal Display Device Although the liquid crystal display device of the present invention has been described as a reflection type as described above, it may be a transflective liquid crystal display device.

In the case of a transflective liquid crystal display device, the electrode 26 provided on the liquid crystal display device 25 is replaced with a transflective film having both light transmissive and light reflective properties, and provided on the liquid crystal display device 27. The light reflecting layer 4a is similarly replaced with a semi-transmissive film.

In one transmissive display mode, a retardation film made of polycarbonate or the like and an iodine-based polarizing plate are sequentially formed outside the glass substrate 2 or the glass substrate 28, and a backlight is further provided. I just need.

Such a semi-transmissive film prevents a phase difference from occurring when sandwiched between two polarizing plates. Then, a thin film made of a metal such as chromium, aluminum, or silver is used. However, as the film thickness increases, light transmittance decreases and light reflectivity increases. The thickness of such a metal thin film has a different light absorption coefficient depending on the type of metal, and is also determined by which of the reflective and transmissive applications requires improved performance. But usually 50
It is good to be 500-500 degrees, preferably 100-400 degrees.
Thereby, the reflectance is 30 to 75% and the transmittance is 5 to 50%.
Characteristics as a transflective liquid crystal display device.

For example, when the semi-transmissive film is formed of an aluminum metal thin film with a thickness of 250 °, the reflectance is 65% and the transmittance is 15%.

The semi-transmissive film may be formed by a dielectric half mirror instead of a metal thin film. That is, a low-refractive-index layer and a high-refractive-index layer may be laminated alternately and sequentially, whereby a part of the light incident through the liquid crystal 11 is reflected by the high-refractive-index layer, Light transmitted through the refractive index layer is reflected by the low refractive index layer, and these reflected lights interfere with each other, so that the reflection performance is remarkably enhanced, and so-called enhanced reflection occurs.

The high refractive index layer and the low refractive index layer may be made of any material as long as there is a refractive index difference between them. range 2.0 to 2.8 selfishness, TiO _2, ZrO _2, SnO
_It is good to consist of ₂ etc. The range of the refractive index of the low refractive index layer is preferably 1.3 to 1.6, for example, Si
_{O 2, AlF 3, CaF 2} , may be configured MgF ₂ or the like.

The thickness range of the high refractive index layer is from 25 to 2000.
{When the thickness range of the low refractive index layer is 25 to 2000}, the above-described enhanced reflection is most remarkable. Further, by setting the thickness range of the semi-permeable membrane to 50 to 12000 °,
This enhanced reflection becomes remarkable.

Further, the semi-transmissive film has a laminated structure in which low-refractive index layers and high-refractive index layers are alternately laminated, so that the total number of each layer is 2, 4, 6, 8, 10 Alternatively, the number of layers is larger than that.

Further, in the case of such a laminated structure, the reflectance and the transmittance can be set as required by changing the number of laminated layers, and the design becomes easy.

[0054] For example, the low refractive index layer made of SiO ₂ (thickness: 940Å) and the high refractive index layer made of TiO ₂ (thickness: 630 Å) and laminated sequentially alternately laminated, the total number of eight layers In the case of the laminated structure described above, the reflectance is 75%,
The transmittance becomes 25%.

Thus, in these transflective liquid crystal display devices, when used in one reflection mode,
According to the liquid crystal display device 25, the convex arrangement group is divided according to the arrangement pitch of the transparent electrodes 9 and the arrangement pitch of the electrodes 26, and each of the matrix-shaped rectangular regions is formed at the intersection of the transparent electrode 9 and the electrode 26. And these transparent electrodes 9
No interference occurs between the color filters 7 and the electrodes 26, and furthermore, no interference occurs even when used outdoors.

It should be noted that the present invention is not limited to the above embodiment, and various changes and improvements may be made without departing from the scope of the present invention.

For example, in the above embodiment, S
Although the description is made with reference to a TN type simple matrix type color liquid crystal display device, a monochrome STN type simple matrix type liquid crystal display device, a TN type simple matrix type liquid crystal display device, or a TN type simple matrix type liquid crystal display device may be used.
The same operation and effect can be obtained with a twisted nematic liquid crystal display device such as an N-type active matrix type liquid crystal display device and a bistable liquid crystal display device.

Further, in the above embodiment, the resin convex array group is formed on the glass substrate. However, when a substrate made of synthetic resin is used instead, the substrate and the convex array group are formed. It may be integrally formed by a well-known molding method.

[0059]

As described above, according to the liquid crystal display device of the present invention, the convex arrangement group is divided according to the arrangement pitch of the transparent electrodes of one member and / or the arrangement pitch of the transparent electrodes of the other member. Or by dividing the convex array according to the arrangement pitch of the light-reflective electrodes of one member and / or the arrangement pitch of the transparent electrodes of the other member. Interference does not appear, and even when used outdoors, light interference does not appear. Even if interference fringes appear, it is within the range that does not hinder practical use. As a result, a high-performance and highly reliable liquid crystal display Equipment could be provided.

[Brief description of the drawings]

FIG. 1 is a plan view of a photomask for forming a convex array group according to the present invention.

FIG. 2 is an enlarged view of a main part of A shown in FIG.

FIG. 3 is a schematic sectional view of the liquid crystal display device of the present invention.

FIG. 4 is a schematic sectional view of another liquid crystal display device of the present invention.

FIG. 5 is a perspective view of a main part of another liquid crystal display device of the present invention.

FIG. 6 is a schematic sectional view of a conventional liquid crystal display device.

FIG. 7 is a plan view of a photomask showing the randomness of a convex array group according to a conventional reflective liquid crystal display device.

FIG. 8 is a plan view of a photomask showing the randomness of a convex array group according to a conventional reflective liquid crystal display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Liquid crystal display device 2, 6, 28, 29 Glass substrate 3, 3a, 3b Convex part 4, 4a Light reflection layer 5, 10, 32, 34 Alignment film 7 Color filter 9, 31, 33 Transparent electrode 11 Liquid crystal 16, 19 , 23 Photomask 25, 27 Reflective liquid crystal display device 26 Electrode G group

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2H091 FA02Y FA08X FA11Z FA14Y FA15Y FA29Y FA41Z FB02 FB08 FC12 FC26 FD06 GA06 GA07 GA16 HA10 KA01 KA03 2H092 MA13 NA03 PA02 PA07 PA08 PA12 PA13

Claims (2)

[Claims] 1. A projecting arrangement group in which a plurality of resin projections are randomly arranged on one main surface of a substrate, and a light-reflective electrode is coated on the projecting arrangement group. A nematic liquid crystal is interposed between one member formed by laminating an alignment layer on a non-conductive electrode and the other member formed by sequentially laminating a transparent electrode and an alignment layer on a transparent substrate to form pixels in a matrix. In a liquid crystal display device, wherein the arrangement pitch is a divisor or a multiple of the arrangement pitch in the light-reflective electrode of the one member, and / or a divisor or a multiple of the arrangement pitch in the transparent electrode of the other member. A liquid crystal display device wherein the convex array group is divided. 2. A method according to claim 1, further comprising: forming, on one main surface of the substrate, a convex arrangement group in which a plurality of resin protrusions are randomly arranged; and covering the convex arrangement group with a light reflecting film. A matrix in which a nematic liquid crystal is interposed between one member formed by sequentially laminating a transparent electrode and an alignment layer on the other, and the other member formed by sequentially laminating a transparent electrode and an alignment layer on a transparent substrate. A liquid crystal display device in which pixels are arranged in a shape, a divisor or a multiple of an arrangement pitch in the transparent electrode of the one member,
A liquid crystal display device wherein the convex array group is divided in accordance with a divisor or a multiple of an array pitch of the transparent electrode of the other member.