JP3162860B2 - Optically compensated liquid crystal substrate and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optically compensated liquid crystal substrate and a method for manufacturing the same, and more particularly, to an optically compensated liquid crystal substrate for improving the viewing angle dependence of a liquid crystal display and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, a liquid crystal substrate made of a pair of glass or transparent resin on which display electrodes are formed, and a liquid crystal injected into a gap between the pair of liquid crystal substrates are provided, and a driving voltage is applied to the display electrodes. 2. Description of the Related Art A liquid crystal display including a liquid crystal driving cell in which a liquid crystal operates by being applied is known.

The display electrode of this liquid crystal drive cell is constituted by a transparent electrode made of, for example, an ITO film. By applying a drive voltage to the display electrode, the magnitude of the birefringence of the liquid crystal layer is changed to change the light. The modulation is performed, but the distance in the liquid crystal layer through which the light actually passes varies depending on the viewing angle, and the apparent birefringence changes depending on the relative angle between the orientation direction of the liquid crystal molecules and the viewing angle direction. The viewing angle dependence of the display characteristics is very large, and the angle range in which the display can be viewed is small. Therefore, in order to reduce the viewing angle dependence of the liquid crystal display, it has been proposed to provide an optical compensation cell or an optical compensation film in the liquid crystal drive cell.

An optical compensation cell and an optical compensation film of this type include, for example, those described in Japanese Patent Application Laid-Open No. 3-67219 (hereinafter referred to as a first conventional example). The optical compensation cell described in the first embodiment is provided with an optical compensation cell substrate facing a liquid crystal driving cell for sealing liquid crystal on one side of a liquid crystal substrate with a predetermined gap therebetween. The viewing angle dependence of the liquid crystal display is reduced by sealing a liquid crystal compound having a cholesteric liquid crystal structure between the substrates. Further, the optical compensation film described in the first example is a film in which the orientation is fixed by quenching after rolling the cholesteric-aligned liquid crystalline polymer composition while heating it between glass substrates. It is formed and attached to a liquid crystal drive cell to reduce the viewing angle dependence of the liquid crystal display.

Further, a liquid crystalline polymer mainly composed of polyester, which is twisted nematic in a liquid crystal state and becomes a glassy state at a liquid crystal transition temperature or lower, is applied on a glass substrate by a spin coating method, and a liquid crystal transition temperature is obtained. After heating as described above, the optical compensatory film provided in the liquid crystal drive cell by fixing the twisted nematic structure by quenching (hereinafter, referred to as the
A second conventional example is described in JP-A-3-28822 or JP-A-3-87720. In particular, the viewing angle dependency of a super twisted nematic (hereinafter, also referred to as STN) type liquid crystal display is described. The black and white display, which is difficult with the STN method, is realized.

[0006]

However, first,
(2) In the conventional example, an optical compensation cell or an optical compensation film formed on a glass substrate is separately attached to reduce the viewing angle dependency, so that the liquid crystal display becomes thicker and heavier, which further increases the cost. There was a problem that it would.

In order to increase the screen size of a liquid crystal display, it is necessary to reduce the resistance by heating a ITO film which is a transparent electrode for driving the liquid crystal. However, due to its heat resistance, there has been a problem that heat treatment cannot be performed at a sufficient temperature and a large screen cannot be obtained. Further, a liquid crystal display is required to have a smooth liquid crystal substrate, and the STN method is particularly severe. Therefore, there has been a problem that a transparent resin substrate having low cost and excellent impact resistance cannot be used as the liquid crystal substrate because of its poor smoothness.

In order to solve this problem, a method of forming a liquid crystal substrate using a smooth glass substrate by transferring its smoothness to a transparent resin substrate and forming a liquid crystal substrate on one side of a large-screen liquid crystal display at a low cost ( Hereinafter, referred to as a third conventional example)
Has been proposed in Japanese Patent Application Laid-Open No. 4-122911.
In this liquid crystal substrate, a photosensitive molecular layer is formed on a smooth glass substrate, and an alignment film, an ITO film (transparent electrode), a color filter, and a black matrix are formed thereon. Next, after bonding the transparent resin substrate, the photosensitive molecular layer and the alignment film and below are separated to produce a liquid crystal substrate, and the smoothness of the substrate is improved without using expensive polishing glass for the liquid crystal substrate.

However, in the third conventional example, it is possible to manufacture a liquid crystal substrate having smoothness at low cost by transferring the smoothness of a smooth glass substrate to a transparent resin substrate. In order to reduce the dependence, an optical compensation cell or an optical compensation film must be separately provided. As in the first and second conventional examples, there is a problem that the liquid crystal display becomes thicker and heavier and the cost increases. Was.

Accordingly, the present invention provides a liquid crystal driving cell substrate having an optical compensation function and smoothness, and enables a heat treatment of a transparent electrode, so that a viewing angle dependence can be obtained without providing an optical compensation cell or an optical compensation film. It is an object of the present invention to provide a single-sided liquid crystal substrate of a thin and lightweight liquid crystal display capable of reducing the performance and having a large viewing angle and a large screen.

[0011]

According to the first aspect of the present invention, a smooth glass substrate is prepared, and a photosensitive molecular layer is formed on the smooth glass substrate to form a mold base. Then, a top coat layer made of an alignment film is formed on the photosensitive molecular layer, and then a transparent electrode, an alignment layer, and an optical compensation layer are sequentially formed on the top coat layer,
A transparent resin substrate or a transparent glass substrate is adhered to the optical compensation layer via a transparent heat-effective or photo-curable adhesive, and then the laminated substrates are irradiated with ultraviolet rays from the mold base side to form a photosensitive layer. The method is characterized in that the adhesive force between the molecular layer and the top coat layer is reduced, and the one side liquid crystal substrate of the liquid crystal display is formed by separating the top layer from the photosensitive molecular layer by stress.

According to a second aspect of the present invention, a smooth glass substrate is prepared, a photosensitive molecular layer is formed on the smooth glass substrate to form a mold base, and a transparent conductive film is formed on the photosensitive molecular layer. Forming a top coat layer consisting of, then, sequentially forming an alignment layer and an optical compensation layer on the top coat layer, and then via a transparent heat-effective or photo-curable adhesive on the optical compensation layer A transparent resin substrate or a transparent glass substrate is adhered, and then the bonded substrates are irradiated with ultraviolet rays from the mold base side to reduce the adhesive force between the photosensitive molecular layer and the top coat layer, and the photosensitive Separating the top coat layer and below from the molecular layer, then patterning the top coat layer made of the transparent conductive film to form a transparent electrode, and then forming an alignment film on the transparent electrode to form one side of the liquid crystal display It is characterized in that to form a crystal substrate.

According to a third aspect of the present invention, there is provided a method of manufacturing an optically compensated liquid crystal substrate according to the first or second aspect of the present invention.
The described invention is characterized in that the alignment film and the alignment layer are made of the same material. Further, the invention according to claim 5 is characterized in that the optical compensation layer is formed of a liquid crystalline polymer composition that is twisted nematic and that changes from a liquid crystal state to a glass state at a liquid crystal transition temperature or lower. The invention according to claim 6, wherein the optical compensation layer is composed of a liquid crystalline polymer composition that has been subjected to a heat treatment at a temperature equal to or higher than the liquid crystal transition point and then has a liquid crystal structure fixed by rapid cooling to exhibit an optical compensation function. It is characterized by having been done.

[0014]

According to the first and second aspects of the present invention, the smoothness of the smooth glass substrate is transferred to the top coat layer and below, and
The irradiated ultraviolet light easily separates the photosensitive layer from the top coat layer to the lower layer, and the alignment film, the alignment layer, the optical compensation layer and the like are formed smoothly. Therefore, even when a transparent resin substrate or an unpolished glass substrate having poor smoothness is used, a thin and lightweight liquid crystal substrate having excellent smoothness and reducing the viewing angle dependence of the liquid crystal display can be formed at low cost. Further, even when a transparent resin substrate is used, since the transparent electrode is formed on a smooth glass substrate and then transferred to the transparent resin substrate, the transparent electrode is heat-treated without being limited by the heat resistance of the transparent resin substrate. As a result, the liquid crystal display can have a large screen by making the transparent electrode low in resistance. Claim 1
Can be etched without being limited by the solvent resistance of the transparent resin substrate.

Further, according to the invention of claim 3, according to claim 1,
Or the one-side liquid crystal substrate of the liquid crystal display is formed by the method of manufacturing an optical compensation liquid crystal substrate according to any one of the above, so that one side of the low-cost, thin and light-weight liquid crystal display capable of having a large viewing angle and a large screen. A liquid crystal substrate is formed. In the invention described in claim 4, the alignment film and the alignment layer are made of the same material, and the transparent electrode is provided between the alignment film and the alignment layer. Therefore, the adhesion between the alignment film and the alignment layer is improved, and the effect of stress distortion due to a temperature change on the transparent electrode is reduced. Further, since the alignment film and the alignment layer are made of the same material, the material cost is reduced.

According to a fifth aspect of the present invention, the optical compensation layer is composed of a liquid crystalline polymer composition that is twisted nematic and that changes from a liquid crystal state to a glass state at a liquid crystal transition temperature or lower. The layers reduce the viewing angle dependence of the liquid crystal display. Since the liquid crystal structure having the nematic orientation has a high color compensation function, the viewing angle dependence of the liquid crystal display is further reduced.

According to a sixth aspect of the present invention, the optical compensation layer is composed of a liquid crystalline polymer composition having an optical compensation function by fixing the liquid crystal structure by quenching after heat treatment to a liquid crystal transition temperature or higher. This optical compensation layer reduces the viewing angle dependence of the liquid crystal display. Since the liquid crystal structure of the optical compensation layer is fixed, the viewing angle dependence of the liquid crystal display is further stabilized.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a view showing a first embodiment of an optically compensated liquid crystal substrate and a method of manufacturing the same according to the first or third to sixth aspects of the present invention, wherein (a) to (i) of FIG. It is sectional drawing explaining each process.

In FIG. 1, (a) is a primer layer forming step, (b) is a photosensitive molecular layer forming step, (c) is a top coat layer forming step, (d) is a transparent electrode forming step, and (e)
Is an alignment layer forming step, (f) is an optical compensation layer forming step,
(G) is a transparent substrate bonding step, (h) is an ultraviolet irradiation step,
(I) is a substrate separation step, 11 is a smooth quartz glass substrate, 12 is a primer layer, 13 is a photosensitive molecular layer, 14 is a polyimide layer, 15 is a transparent pixel electrode, 16 is a polyimide layer, and 17 is a polymer liquid crystal. The layer, 18 is an adhesive, and 19 is a transparent resin substrate.

Hereinafter, the manufacturing process of this embodiment will be sequentially described for each process. Primer layer forming step (a) First, a smooth quartz glass substrate (smooth glass substrate) 11 having excellent surface smoothness is prepared, and a silane coupling agent (for example, KBM603 manufactured by Shin-Etsu Chemical) is provided on the smooth quartz glass substrate 11.
Is applied by spin coating, and then baked to form a primer layer 12.

Photosensitive Molecular Layer Forming Step (b) Next, a solution in which a photosensitive polymer is dissolved is applied on the primer layer 12 by spin coating, and then baked to form the photosensitive molecular layer 13 on the smooth quartz glass substrate 11. Form on top. The photosensitive polymer is described in, for example, JP-A-4-14-1.
Those described in Japanese Patent No. 22911 may be used.

Top coat layer forming step (c) Next, a polyimide resin precursor solution (manufactured by Hitachi Chemical Co., Ltd.) is applied on the photosensitive molecular layer 13 by spin coating, and baked at a temperature of 200 ° C. for 2 hours. A polyimide layer (alignment film) 14 is formed as a top coat layer. Transparent electrode forming step (d) Next, the smooth quartz glass substrate 11 is heated to 200 ° C. or higher to form an ITO film on the polyimide layer 14 by a sputtering method, a predetermined pattern is formed by a photolithographic method, and the ITO film is formed by etching. A transparent pixel electrode (transparent electrode) 15 is formed.

Step of forming alignment layer (e) Next, similarly to the step of forming the top coat layer, the precursor solution is applied and baked on the transparent pixel electrode 15 to cover the transparent pixel electrode 15 and adhere to the polyimide layer 14. After forming the layer (alignment layer) 16, the surface of the polyimide layer 16 is rubbed in a predetermined direction to perform an alignment treatment.

Optical Compensation Layer Forming Step (f) Next, a mixed solution of a polyester-based main-chain type liquid crystal polymer and an optically active polyester polymer is applied on the oriented polyimide layer 16 by spin coating, and then dried. To form a polymer liquid crystal layer 17. Next, the polymer liquid crystal layer 17 is heated to a temperature equal to or higher than the liquid crystal transition point temperature, and then heat-treated, rapidly cooled to a glass state, and the liquid crystal structure having a twisted nematic orientation is fixed, and the polymer liquid crystal layer 17 exhibits an optical compensation function. Thus, an optical compensation layer is constituted by the polymer liquid crystal layer 17. The polymer liquid crystal layer 17 is formed, for example, in JP-A-3-28822 or JP-A-3-87720.
It is possible to use those described in Japanese Patent Publication No.

Transparent substrate bonding step (g) Next, a transparent resin substrate (for example, polyethylene terephthalate) 19 is bonded to the polymer liquid crystal layer 17 with a room temperature curable adhesive (epoxy type) 18. Ultraviolet irradiation step (h) Then, ultraviolet rays (25 ) are applied to the polyimide layers 14, 16 and the polymer liquid crystal layer 17 from the back side of the smooth quartz glass substrate 11.
0 nm) to irradiate the photosensitive molecular layer 13 and the polyimide layer.
Decrease the adhesion between 14

Substrate separation step (i) Next, stress is applied to the ends of the smooth quartz glass substrate 11 and the transparent resin substrate 19, and the photosensitive molecular layer 13 and the polyimide layer 14 are separated by the stress. Next, the surface of the polyimide layer 14 is rubbed in a predetermined direction to perform an alignment treatment, thereby completing the one-sided liquid crystal substrate 10 of the liquid crystal display.

The liquid crystal substrate 10 was formed by the same manufacturing method (the alignment layer forming step (e) and the optical compensation layer forming step (f) were not performed), and provided with a counter electrode facing the transparent pixel electrode 15. A predetermined gap is defined with the counter substrate, and the liquid crystal injected and sealed in the gap is filled with the transparent pixel electrode 15.
And a liquid crystal display for driving and displaying liquid crystal by applying a driving voltage between the opposed electrodes. The liquid crystal substrate 10 is provided with a polymer liquid crystal layer 17 in which a liquid crystal structure having a twisted nematic orientation is fixed and an optical compensation function is exhibited, thereby reducing viewing angle dependence of the liquid crystal display. In addition, a primer layer 12, a photosensitive molecular layer 13, and a polyimide layer are formed on a smooth quartz glass substrate 11.
14 or less are formed, and the photosensitive molecular layer 13 is formed by the ultraviolet light.
And the polyimide layer 14, the smoothness of the smooth quartz glass substrate 11 is transferred to the polyimide layer 14 and below. That is, the primer layer 12 and the photosensitive molecular layer 13 on the smooth quartz glass substrate 11 constitute a base for molding.

The opposing substrate may be formed by the same manufacturing process as that of the liquid crystal substrate 10, and both liquid crystal substrates of the liquid crystal display may be provided with an optical compensation function. Further, the polymer liquid crystal layer 17 may be the one described in JP-A-3-67219. Also, polyimide layers 14, 16
May be a commercially available material, and the adhesive 18 may be an ultraviolet curable adhesive. Further, the transparent resin substrate 19 may be made of polystyrene, polycarbonate, polyether sulfone, polyolefin, or the like, and needless to say, unpolished glass may be used.

As described above, in this embodiment, since the smoothness of the smooth quartz glass substrate 11 is transferred and the polymer liquid crystal layer 17 having the optical compensation function is formed, the viewing angle dependence of the liquid crystal display is reduced. It can be used for an STN type liquid crystal display in which the smoothness of the liquid crystal substrate is severe. Further, since the polymer liquid crystal layer 17 has a fixed twisted nematic alignment having a high color compensation effect, it is possible to realize a monochrome display which is difficult in the STN mode. In addition, the photosensitive molecular layer 13 is irradiated by the irradiated ultraviolet rays.
In addition, the adhesive strength of the polyimide layer 14 is reduced, so that the polyimide layer 14 and below can be easily separated from the photosensitive molecular layer 13. Therefore, a low-cost, thin, and lightweight liquid crystal substrate for a liquid crystal display that increases the viewing angle of the liquid crystal display is formed.

Further, since the transparent pixel electrode 15 is formed on the smooth quartz glass substrate 11 and then transferred to the transparent resin substrate 19, heat treatment can be performed even if the heat resistance of the transparent resin substrate 19 is low. By heating the transparent pixel electrode 15 to reduce the resistance, the capacity of the liquid crystal substrate 10 is increased, and the screen of the liquid crystal display can be enlarged. Further, it is not necessary to consider the solvent resistance of the transparent resin substrate 19.

Further, since the polyimide layers 14 and 16 are made of the same material, the adhesion between the polyimide layers 14 and 16 is improved, and the influence of stress distortion due to a temperature change on the transparent pixel electrode 15 is reduced. . In addition, polyimide layer 1
Since the components 4 and 16 are made of the same material, the material cost is reduced. FIG. 2 is a view showing a second embodiment of the optically compensated liquid crystal substrate and the method of manufacturing the same according to the second to sixth aspects of the present invention. It is sectional drawing explaining. In this embodiment, the same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted.

In FIG. 2, (a) is a step of forming a primer layer, (b) is a step of forming a photosensitive molecular layer, (c) is a step of forming a top coat layer, (d) is a step of forming an alignment layer, and (e) is a step of forming an alignment layer. An optical compensation layer forming step, (f) a transparent substrate bonding step,
(G) is an ultraviolet irradiation step, (h) is a substrate separation step,
(I) is a transparent electrode forming step, (j) is an alignment film forming step, 24 is a polyimide layer, 25 is a transparent pixel electrode, 25a is a transparent conductive film, 26 is a polyimide layer, 27 is a polymer liquid crystal layer, 28
Is an adhesive, and 29 is a transparent resin substrate.

The manufacturing steps of this embodiment will be described below step by step. Primer layer forming step (a) First, a smooth quartz glass substrate 11 is prepared, a primer layer 12 is formed on the smooth quartz glass substrate 11, and a photosensitive molecular layer forming step (b) is formed on the smooth quartz glass substrate 11. A photosensitive molecular layer 13 is formed on the primer layer 12 thus formed.

Top coat layer forming step (c) Next, a smooth quartz glass substrate 11 is
A transparent conductive film 25a composed of an ITO film is formed as a top coat layer by sputtering at a temperature of not less than 00 ° C., and an alignment layer forming step (d) is performed by applying and baking the precursor solution on the transparent conductive film 25a. After forming the (alignment layer) 26, an alignment process is performed by rubbing the surface in a predetermined direction.

Optical Compensation Layer Forming Step (e) Next, a mixed solution of a polyester-based main-chain type liquid crystal polymer and an optically active polyester polymer is coated on the oriented polyimide layer 26 and dried to form a polymer liquid crystal layer 27. Is formed, and after a heat treatment at a temperature equal to or higher than the liquid crystal transition temperature, the liquid crystal structure is rapidly cooled to fix the liquid crystal structure having a twisted nematic orientation, and the polymer liquid crystal layer 27 exhibits an optical compensation function to form an optical compensation layer.

Transparent substrate bonding step (f) Next, a transparent resin substrate 29 is bonded to the polymer liquid crystal layer 27 via a room temperature curable adhesive 28, and then an ultraviolet irradiation step (g) is performed on the polyimide layer 26 and the polymer liquid crystal layer. Ultraviolet (250 nm) is radiated from the back side of the smooth quartz glass substrate 11 to 27 and the like to reduce the adhesive force between the photosensitive molecular layer 13 and the transparent conductive film 25a.

[0037] Then the substrate separation step (h), the stress is added to the end of the smoothing quartz glass substrate 11 and the transparent resin substrate 29, separated between the transparent conductive film 25a and the photosensitive molecule layer 13 by the stress, transparent Electrode forming step (i) A transparent pixel electrode (transparent electrode) 25 made of an ITO film is formed by forming a predetermined pattern on the transparent conductive film 25a by a photolithography method and etching the same.

The alignment film formation step (j) Next, the alignment layer formed by the same procedure, the precursor solution applied and baked to the transparent pixel electrode on the transparent pixel electrode 25 25
After forming a polyimide layer (orientation film) 24 that is in close contact with the polyimide layer 26, the surface of the polyimide layer 24 is rubbed in a predetermined direction to perform an orientation treatment, thereby completing the one-sided liquid crystal substrate 20 of the liquid crystal display.

The liquid crystal substrate 20 constitutes a liquid crystal display as in the above-described embodiment. In this embodiment, the same operation and effect as in the above-described embodiment can be obtained.

[0040]

According to the first and second aspects of the present invention, the smoothness of the smooth glass substrate is transferred to the top coat layer and below, and the top coat layer and below are easily separated from the photosensitive molecular layer by the irradiated ultraviolet light. Since the alignment film, the alignment layer, the optical compensation layer, and the like can be formed smoothly, a transparent resin substrate having poor smoothness or an unpolished glass substrate can be used for a liquid crystal substrate requiring smoothness. Thus, a single-sided liquid crystal substrate of a thin and lightweight liquid crystal display having a large viewing angle and a reduced viewing angle can be formed at low cost. In addition, even when a transparent resin substrate is used, the transparent electrode or the transparent conductive film is formed on a smooth glass substrate and then transferred to the transparent resin substrate, so that the transparent electrode is not limited to the heat resistance of the transparent resin substrate. Alternatively, the transparent conductive film can be subjected to heat treatment, and the resistance of the transparent electrode can be reduced to increase the capacity. Further, in the first aspect, the solvent resistance of the transparent resin substrate is not limited. As a result, it is possible to provide a low-cost, thin, and lightweight single-side liquid crystal substrate for a liquid crystal display, which has a large viewing angle and a large screen.

According to the third aspect of the present invention, since the one-sided liquid crystal substrate of the liquid crystal display is formed by the method of manufacturing an optically compensated liquid crystal substrate according to any one of the first and second aspects, the viewing angle is large. A low-cost, thin, lightweight one-sided liquid crystal substrate that can have a large screen can be formed. According to the fourth aspect of the present invention, since the alignment film and the alignment layer are formed of the same material and the transparent electrode is provided between the alignment film and the alignment layer, the adhesion between the alignment film and the alignment layer can be improved. It is possible to reduce the influence of stress strain on the transparent electrode due to temperature change. Further, since the alignment film and the alignment layer are made of the same material, the material cost can be reduced.

According to the fifth aspect of the present invention, the optical compensation layer composed of the liquid crystal polymer composition having a high color compensation function and having a twisted nematic alignment reduces the viewing angle dependence of the liquid crystal display, thereby further improving the optical compensation. A single-sided liquid crystal substrate of a liquid crystal display having excellent characteristics can be formed. According to the invention described in claim 6, the optical compensation layer composed of the liquid crystalline polymer composition having the optical compensation function of the liquid crystal structure fixed reduces the viewing angle dependence of the liquid crystal display, so that the optical compensation can be further improved. A single-sided liquid crystal substrate of a stable liquid crystal display can be formed.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of an optically compensated liquid crystal substrate and a method of manufacturing the same according to the first or third to sixth aspects of the present invention, wherein (a) to (i) show steps in the present embodiment. It is sectional drawing explaining.

FIG. 2 is a view showing a second embodiment of the optically compensated liquid crystal substrate and the method of manufacturing the same according to the second to sixth aspects of the present invention;
(A)-(j) are sectional views explaining each process in this example.

[Explanation of symbols]

 10, 20 Liquid crystal substrate 11 Smooth quartz glass substrate (smooth glass substrate) 12 Primer layer 13 Photosensitive molecular layer 14, 24 Polyimide layer (alignment film) 15, 25 Transparent pixel electrode (transparent electrode) 16, 26 Polyimide layer (alignment film) 17, 27 Polymer liquid crystal layer (optical compensation layer) 18, 28 Adhesive 19, 29 Transparent resin substrate 25a Transparent conductive film

Claims (6)

(57) [Claims] 1. A smooth glass substrate is prepared, a photosensitive molecular layer is formed on the smooth glass substrate to form a mold base, and a top coat layer composed of an alignment film is formed on the photosensitive molecular layer. Then, a transparent electrode, an alignment layer, and an optical compensation layer are sequentially formed on the top coat layer, and then a transparent resin substrate is placed on the optical compensation layer via a transparent heat- or light-curable adhesive. Alternatively, a transparent glass substrate is adhered, and then the bonded substrates are irradiated with ultraviolet light from the side of the molding substrate to reduce the adhesive force between the photosensitive molecular layer and the top coat layer. A method for manufacturing an optically-compensated liquid crystal substrate, comprising forming a single-sided liquid crystal substrate of a liquid crystal display by separating a portion below a top coat layer. 2. A smooth glass substrate is prepared, a photosensitive molecular layer is formed on the smooth glass substrate to form a mold base, and a top coat layer made of a transparent conductive film is formed on the photosensitive molecular layer. Formed, then an alignment layer and an optical compensation layer are sequentially formed on the top coat layer, and then a transparent resin substrate or a transparent glass is placed on the optical compensation layer via a transparent heat- or light-curable adhesive. The substrate is adhered, and then the bonded substrate is irradiated with ultraviolet light from the molding substrate side to reduce the adhesive force between the photosensitive molecular layer and the top coat layer, and the photosensitive molecular layer is converted from the top coat layer by stress. Separating the following, then forming a transparent electrode by patterning the top coat layer made of the transparent conductive film, and then forming an alignment film on the transparent electrode to form a one-sided liquid crystal substrate of a liquid crystal display. Method of manufacturing an optical compensation liquid crystal substrate, wherein. 3. An optically compensated liquid crystal substrate formed by the method of manufacturing an optically compensated liquid crystal substrate according to claim 1. 4. The optically compensated liquid crystal substrate according to claim 3, wherein said alignment film and said alignment layer are made of the same material. 5. The optical device according to claim 3, wherein the optical compensation layer is formed of a liquid crystalline polymer composition which is twisted nematic and is changed from a liquid crystal state to a glassy state at a liquid crystal transition temperature or lower. Compensation liquid crystal substrate. 6. The optical compensation layer is formed of a liquid crystalline polymer composition having a liquid crystal structure fixed by rapid cooling after heat treatment at a temperature higher than the liquid crystal transition temperature and exhibiting an optical compensation function. The optically compensated liquid crystal substrate according to claim 3, wherein