JP2001133762A - Liquid crystal device and method of producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently produce a liquid crystal device constituted of thin substrates. SOLUTION: After a cell body 10 is formed by pasting together two mother substrates having a plurality of liquid crystal device regions with a sealing material, at least one mother substrate 14 is polished to reduce the thickness before a liquid crystal is injected. The sealing material to paste together the two mother substrates 12, 14 consists of an inner peripheral seal 30 arranged to surround the region 40 where the liquid crystal is to be sealed of each liquid crystal display device region and an outer peripheral seal 20 arranged in the periphery of the two mother substrates to surround all of the plurality of liquid crystal device regions 40. The outer peripheral sealing 20 has an opening in a part of the periphery of the two mother substrates 12, 14 so that a narrow and long passage 24 is extended from the inner region surrounded by the outer peripheral sealing 20 to the outermost opening end 22 of the outer peripheral sealing. Since the outer peripheral sealing 20 has the opening in a part, fracture of the cell body 10 is prevented when the two mother substrates 12, 14 are pasted together hardening the sealing material. Moreover, since the long passage 24 is connected to the inner region, intrusion of an abrasive and water into the inner region during polishing can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal device, and more particularly, to a substrate constituting the liquid crystal device.

[0002]

2. Description of the Related Art A liquid crystal device is manufactured by laminating two substrates, each having a drive electrode formed on the opposing surface thereof, with a predetermined gap therebetween, forming a cell body, and sealing liquid crystal in the gap between the cell bodies. You. Such a liquid crystal device has been devised in various ways in order to respond to demands such as improvement in display quality when used as a display device and reduction in the weight and thickness of the device. It is preferred to make itself as thin as possible.

[0003]

In order to obtain a liquid crystal device composed of a thin substrate, a thin glass substrate (for example, 0.3 mm) is used instead of a general substrate having a thickness of, for example, 0.7 mm for a liquid crystal device. It may be used. However, before the liquid crystal device is manufactured, the glass substrate is subjected to various processes such as formation of electrodes for driving the liquid crystal, application of a spacer, application of a sealant, and a pressurizing process when two substrates are bonded with the sealant. When a thin substrate is used from the beginning, the strength is insufficient, and the substrate is broken in such a manufacturing process, and there is a problem that handling is difficult.

[0004] In order to solve the above problems, an object of the present invention is to provide a method for reliably manufacturing a liquid crystal device using a thin substrate.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is a liquid crystal device in which liquid crystal is sealed in a gap between two substrates. An inner peripheral seal disposed so as to surround the liquid crystal enclosing region of each liquid crystal device region, and an inner peripheral seal disposed so as to surround all of the plurality of liquid crystal device regions on the outer periphery of the two mother substrates. And the outer peripheral seal is bonded with a predetermined gap.

By employing the method of bonding the mother substrates each having an area corresponding to a plurality of liquid crystal devices as described above, it is possible to simultaneously proceed with the manufacturing process of the plurality of liquid crystal devices up to the bonding step, thereby improving the efficiency of the liquid crystal device. It becomes easy to manufacture it. Another feature of the present invention is a liquid crystal device configured by sealing liquid crystal in a gap between two substrates.
After bonding the two substrates, at least one of the two substrates is polished to reduce the thickness of the substrates, and after the substrates are polished, the liquid crystal is sealed in the liquid crystal sealing region.

There are many steps such as a step of forming a liquid crystal drive electrode before the substrates are bonded. In bonding the substrates, a method of curing a sealing material while pressing the two substrates is used. Therefore, when processing is performed using a thin substrate, cracks are likely to occur in the substrate. But,
If the substrate is polished after bonding, a required thin substrate can be realized while minimizing cracking of the substrate during bonding. In addition, since the polishing is performed before the liquid crystal is sealed, it is possible to prevent a problem that impurities are mixed into the sealed liquid crystal during polishing.

Still another feature of the present invention is a method of manufacturing a liquid crystal device in which liquid crystal is sealed in a gap between two substrates, wherein two liquid crystal devices each having a plurality of individual liquid crystal devices are provided. An inner peripheral seal disposed so as to surround the liquid crystal sealing region of each liquid crystal device region, and an outer peripheral seal disposed so as to surround all of the plurality of liquid crystal device regions on the outer periphery of the two mother substrates. By laminating at least one of the two mother substrates bonded together to reduce the thickness of the mother substrate, and filling the liquid crystal in the liquid crystal filling region after polishing the substrates. is there.

Since the mother substrate is polished and thinned after the two mother substrates are bonded in this manner, for example, an external pressure is applied when forming necessary electrodes and the like on the substrate and when bonding the mother substrates. Is applied, the mother substrate at that time has a sufficient strength because it is thick. That is, it is possible to obtain a thick substrate at the stage where the strength is required and finally obtain a required thin substrate. In addition, since the polishing is performed in a state of a cell body obtained by bonding two substrates, the polishing is higher in strength than when the object to be polished is a single substrate, and the possibility of breakage during polishing is reduced. Is also easy. Furthermore, the inside area is not contaminated because polishing is performed while preventing the intrusion of the liquid agent or the like into the inside area by the outer peripheral seal. In addition, polishing is performed in a state where two mother substrates having a plurality of liquid crystal device regions are bonded to each other, so that a cell body for each liquid crystal device (one separated from a large cell body for each device). ) Is more efficient than polishing.

Another feature of the present invention is a method of manufacturing a liquid crystal device in which liquid crystal is sealed in a gap between two substrates, wherein two mother plates each having a plurality of individual liquid crystal devices are provided. An inner peripheral seal disposed so as to surround the liquid crystal enclosing region of each liquid crystal device region; and a plurality of liquid crystal device regions surrounding all of the plurality of liquid crystal device regions on the outer periphery of the two mother substrates, and an opening at a part of the outer periphery. And an outer peripheral seal arranged so that an elongated opening passage extends from the inner area surrounded by the outer peripheral seal to the outermost outermost end of the outer peripheral seal. At least one of the substrates is polished to reduce the thickness of the mother substrate, and after the substrates are polished, liquid crystal is sealed in the liquid crystal sealing region.

Since the outer peripheral seal is partially opened,
When the mother substrate is bonded with the sealing material, the internal pressure and the external pressure of the cell body can be kept substantially equal, and the cell body can be reliably prevented from being ruptured.
Further, since an elongated opening passage exists between the outermost opening end of the outer peripheral seal and the inner region of the cell body, for example, an abrasive, a polishing liquid, water, or the like used in polishing is used to open the opening end of the outer peripheral seal. Even if it enters the opening passage from above, it does not reach the internal region of the cell body. Accordingly, contamination of the inner region by polishing is reliably prevented.

In the present invention, by forming the outer peripheral seal or the opening passage into a maze pattern and forming the labyrinth pattern near the outer periphery of the two mother substrates, abrasives, water and the like enter the inner region of the cell body. This can be more reliably prevented. The maze pattern can be easily obtained by, for example, providing a plurality of protrusions on the inner wall of the open passage or meandering the passage itself.

Further, according to the present invention, in a liquid crystal device having a structure in which liquid crystal is sealed in a gap between two substrates, the two substrates are bonded together with a predetermined gap and before the liquid crystal is sealed in the gap. The thickness of at least one of the two substrates is reduced by the polishing step performed in the step (b). A liquid crystal device using a polished thin plate polished with such a cell body can be manufactured with good mass production efficiency at low cost, and furthermore, a lightweight, thin, and inexpensive liquid crystal device with excellent display quality and the like. Can be provided.

Further, the present invention provides a liquid crystal device in which liquid crystal is sealed in a gap between two substrates, wherein at least the substrate disposed on the front side of the device is a polished thin plate. There is a feature. Another feature of the present invention is that the polished thin plate is polished to about 0.1 mm to 0.1 mm.
That is, the thickness of the substrate is reduced to about 3 mm.

In an apparatus in which, for example, a touch panel or the like is arranged on the front side of the apparatus, the substrate on the front side of the liquid crystal cell is made of a polished thin plate, for example, about 0.1 mm to
It is possible to obtain a lightweight liquid crystal device with high display quality, which is reinforced by the touch panel even if it is extremely thin, about 0.3 mm, and which can surely prevent blurring or displacement of display.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention (hereinafter, referred to as embodiments) will be described below with reference to the drawings. In the present embodiment, a pair of substrates are bonded to each other with a gap for enclosing the liquid crystal therebetween, thereby forming a cell body. Before enclosing the liquid crystal in the gap, at least one of the two substrates of the cell body is formed. Is polished to reduce the thickness of the substrate of the final device.

FIG. 1 shows a schematic configuration of a liquid crystal cell body formed by bonding two substrates. FIG. 1A is a plan configuration, and FIG. 1B is a schematic cross-sectional configuration along the line AA in FIG. On the opposing surface of each substrate, electrodes and wiring for driving the liquid crystal, and other layers (protective layer, alignment layer,
A color filter layer) and the like are formed, and two substrates on which such a layer is formed are attached to each other with a sealant. In the area corresponding to each liquid crystal device of the two substrates, the opposing surfaces of the two substrates bonded to each other are separated from each other by a predetermined gap by a sealing material surrounding the device region and a spacer (not shown) provided in the device region. I have.

In the present invention, in order to increase the mass production efficiency, a large substrate (12, 1) having a plurality of liquid crystal device areas is used as the substrate.
4) is used, and the cell body 10 shown in FIG. 1 is configured by bonding such two large substrates (mother substrates) 12 and 14 with sealing materials (20 and 30). The mother substrates 12 and 14 used are, for example, relatively thick (for example, 0.7 mm) which is frequently used as a substrate for a liquid crystal device.
Thickness) glass substrate. Of course, the substrate is not limited to a glass substrate having a thickness of 0.7 mm. However, in the present embodiment, since polishing is performed later, a substrate having a thickness that can maintain sufficient strength in manufacturing a cell body can be used.

The sealing material includes an inner peripheral seal 30 disposed so as to surround the liquid crystal enclosing region of each liquid crystal device region 40 and a plurality of liquid crystal device regions 4 on the outer periphery of the two mother substrates 12 and 14.
0 and an outer peripheral seal 20 arranged so as to surround all the zeros. The outer peripheral seal 20 has an opening (opening end 22) at a part of the outer periphery of the two mother substrates 12, 14, and an elongated opening passage 24 extends from the inner region surrounded by the outer peripheral seal 20 to the outermost opening end of the outer peripheral seal. It is arranged so as to extend to 22.

The inner peripheral seal 30 and the outer peripheral seal 20 can both be made of a thermosetting resin such as an epoxy resin or an ultraviolet curing resin as a material. The substrates 12 and 14 are bonded together and the sealing material is cured (for example, UV irradiation, pressurization, and heating)
Then, the two substrates are bonded. Note that the arrangement of the sealant on the substrate surface is not limited to printing, and may be formed on one substrate surface using, for example, a dispenser. Here, in the present embodiment, as shown in FIG. 1, the outer peripheral seal 20 is opened so that the internal region is not completely sealed. When the opening is opened as shown in FIG. 1, the two substrates are bonded together, for example, when the sealing material is cured by thermocompression bonding,
Even if internal residual gas or expansion of the cell structure itself occurs due to temperature rise in the internal area, etc., the pressure difference between the internal area and the outside can be kept very small, and the internal temperature can be lowered. Thus, the cell body rupture can be reliably prevented.
The inner region of the cell body and the open end 22 of the outer peripheral seal 20
To form an elongated passage 24 extending between the opening end 22 and the polishing step, even if a polishing liquid or a polishing agent enters from the opening end 22 during the polishing step described below, prevents these from entering the internal region of the cell body 10. are doing.

Next, the polishing process of the cell body will be described more specifically. In the present embodiment, after the two mother substrates are bonded to form the cell body 10, at least one of the two mother substrates 12 and 14 is polished in the state of the empty cell body before the liquid crystal is sealed. I do. FIG. 2 shows an example of a procedure in the polishing step. As shown in FIG. 2A, a substrate to be polished is placed on the support plate 60 on the support plate 60.
The cell body 10 is fixed so as to face 0.

After a holding member 72 for holding the cell body 10 is provided on the surface of the attaching plate 70 as shown in FIG. 2B, the attaching plate 70 is attached to the supporting plate 60 as shown in FIG. And press it closer. Holding material 72
Is made of a pitch such as coal tar or a thermosoftening material having a lower boiling point, and is applied to the surface of the attaching plate 70 and then heated to the boiling point (for example, 60 ° C. to 70 ° C.).
C.), the cell body 10 is pressed so that the attachment plate 70 is pressed against the support plate 60 so that the cell body 10 is embedded in the holding material 72.

As shown in FIG. 2D, the sticking plate 70
Is raised, the cell body 10 buried and adhered to the holding material 72 separates from the support plate 60 and rises together with the attachment plate 70. The sticking plate 70 in such a state is then immersed in a predetermined solvent to expose the surface of the cell body 10 stuck by the holding member 72 (FIG. 2E).
reference).

Next, as shown in FIG.
Is placed on the upper surface, the abrasive is put between the surface of the cell body 10 and the polishing plate 50, and the attaching plate 70 is pressed while the polishing plate 50 is pressed from above. Rotate. As a result, the surface of the cell body 10, that is, the surface of the substrate where the cell body 10 is exposed is rubbed by the abrasive, and the thickness of the substrate is reduced.
Polishing is performed in the order of primary polishing and secondary polishing. In the primary polishing, rough grinding is performed using an abrasive obtained by mixing relatively coarse-grained sand, metal, or a pellet such as a resin as abrasive powder in water. In this primary polishing, first, the substrate is roughly polished (removed) with coarse abrasive powder to reduce the thickness of the substrate at high speed. Next, finish polishing is performed using finer abrasive powder (for example, a metal diamond made of a mixture of diamond powder and aluminum powder, a resin diamond made of a mixture of diamond powder and resinoid, etc.), and the substrate surface is roughly polished. Enhance the flatness. In the secondary polishing, for example, cesium oxide or the like is used as an abrasive to flatten the substrate surface after the primary polishing with higher accuracy. The abrasive used in the primary polishing and the secondary polishing is selected according to the material of the glass substrate of the cell body 10.

After the secondary polishing, the holding member 72 is softened by, for example, reheating, and the cell body 1 is removed from the attachment plate 70.
Then, the cell body 10 is washed. In washing,
First, the holding material 72 remaining on the surface of the cell body 10 is dropped. Then, the cell body 10 is washed using a surfactant, water (pure water) and alcohol in this order, and finally subjected to a drying treatment (alcohol vapor), so that the cell body 1 is polished during polishing.
The shavings such as glass powder adhered to the glass powder are removed to obtain a clean cell body 10.

In the present embodiment, since the above-described polishing of the substrate is performed on the cell body 10 on which the two mother substrates are bonded, the required strength is secured and the substrate is less likely to crack. . Further, by forming an open end 22 on the outer peripheral seal 20 of the cell body 10, a polishing agent,
Liquid (water, alcohol) or the like used for cleaning enters the cell body 10, but reaches the internal area because the elongated opening passage 24 is provided between the open end 22 and the internal area of the cell body 10. Is reliably prevented.

In order to more reliably prevent abrasives and water from entering into the cell body inner region by polishing, the outer peripheral seal 20 must be used.
It is preferable to provide projections at a plurality of locations corresponding to the inner wall of the opening passage 24 or adopt a pattern in which the opening passage 24 meanders. For example, as shown in FIG.
The layout may be such that the barriers protrude from both walls of the opening passage 24 alternately left and right, or as shown in FIG.
4 itself, the open passage 2 viewed from the open end 22
4 meanders like a maze, and it is possible to reliably prevent abrasives, water, and the like from entering the empty cell body inner region. However, if the opening passage 24 is long enough to prevent contamination inside the cell, it may be extended along two sides of the mother substrate as shown in FIG. 1 or the passage may not be formed as a maze as described above. FIG.
As shown in (c), the opening passage 24 may extend from the opening end 22 by, for example, the length of one side of the mother substrate.

After at least one substrate of the cell body 10 is polished by the above-mentioned polishing treatment and the thickness of the substrate is reduced, the cell body 10 is separated into individual liquid crystal device regions 40. Next, liquid crystal is injected into the liquid crystal device region 40 from the liquid crystal injection port 32,
After that, the injection port 32 is sealed. Here, by injecting the liquid crystal after the polishing, the liquid crystal only needs to be sealed in the cells having no defect even after the polishing and separation into each device region, and the liquid crystal is not wasted. In addition, it is possible to reliably prevent the abrasive or water from being mixed into the enclosed liquid crystal, and further to prevent the cell body from being stained by the liquid crystal flowing out during polishing.

Next, a configuration of a liquid crystal device using a liquid crystal cell in which one substrate is thinned by polishing an empty cell body will be described. The liquid crystal device of FIG. 4 is a reflection type liquid crystal device, and is constituted by a polished thin plate in which a glass substrate 14 located on the back side of the device is thinned by polishing.

In this reflection type liquid crystal device, the substrate 12 having the liquid crystal driving electrodes 34 formed on the opposing surfaces and the substrate 1
There is a liquid crystal layer 36 in the gap with the liquid crystal layer 4. On the outside (observation side) of the substrate 12 located on the observation side (front) of the apparatus, there is provided a polarizing plate 38 that allows only a linearly polarized light component vibrating in one direction to pass. On the non-observation side (back side) of the apparatus, a light scattering plate 80 and a reflection plate 82 are arranged in this order outside the substrate 14 made of a polished thin plate.

Of the external light, the linearly polarized light that has passed through the polarizing plate 38 and entered the cell is the substrate 12, the electrode 34, the liquid crystal layer 3
6, passes through the electrode 34, the substrate 14, and the light scattering plate 80 in this order and reaches the reflection plate 82, where it is reflected and reaches the polarizing plate 38 through a path opposite to that at the time of incidence. Here, the polarization state or the optical rotation direction of the light passing through the liquid crystal layer 36 is changed by controlling the alignment state of the liquid crystal layer 36 by voltage control by the upper and lower electrodes 34 sandwiching the liquid crystal. Thereby, the reflection plate 82
It is determined whether the light reflected by the light source passes or is blocked when the light reaches the polarizing plate 38.
Black or display on / off will be observed on the front side of the device.

In such a reflection type liquid crystal device, the problem of parallax can be reduced by making the substrate 14 on the back side of the device a polished thin plate. In a reflection type device, for example, in a reflection type device, light obliquely incident on a liquid crystal cell and light reflected and emitted outside the cell pass through different pixels, and the liquid crystal device is observed obliquely. Then, a double image appears as if the shade of the displayed pixel was reflected on the reflector,
This is a phenomenon in which the outline of the display is blurred. As the back substrate 14 is thicker, a larger parallax is generated. However, if the backside substrate is polished and thinned in the state of the cell body as in the present embodiment, it is possible to efficiently manufacture a very high-quality device when using it as a reflective liquid crystal device. It becomes possible. Even if the substrate 14 on the back side is thin, at least the reflection plate 82 is disposed on the back side,
Since the thin substrate 14 is reinforced, the substrate is less likely to crack, and the reliability of the device is high.

The liquid crystal device shown in FIG. 5 is a liquid crystal device with a touch panel, and is constituted by a polished thin plate in which the glass substrate 14 located on the front side of the device is thinned by polishing, contrary to the reflection type liquid crystal device shown in FIG. ing. The other liquid crystal cells themselves have the same configuration as that of FIG. 4, but in this device, a touch panel 90 is provided between the liquid crystal cell and the polarizing plate 38 arranged on the front side of the device. The touch panel 90
A transparent first substrate 92 and a second substrate 94 form a spacer 98.
A resistance film 96 made of, for example, ITO (Indium Tin Oxide) is formed on the facing surface of each of the substrates 92 and 94.

When the touch panel 90 is pressed down from the first substrate 92 side, and the first substrate-side resistive film 96 separated by the spacer 98 comes into contact with the second substrate-side resistive film 96, a method such as resistance division is used. The contact positions of the upper and lower resistive films 96 are detected, and the liquid crystal cell at the corresponding positions is controlled. Thereby, it is possible to make it appear that the display of the position where the touch panel 90 is pressed is changed.

Since the touch panel 90 is arranged on the front surface of the liquid crystal cell as shown in the figure, it is necessary to reduce the reflection of external light on the front side and to reduce the displacement between the pressed position and the display position on the liquid crystal cell. The front substrate 14 of the liquid crystal cell
Need to be thin. In the present embodiment, the thickness is reduced by polishing the substrate 14 disposed on the front side of the device in the state of the cell body, so that a liquid crystal device having excellent display quality can be manufactured with high mass production efficiency. The thickness of the substrate 14 can be reduced to a thickness of about 0.3 mm to 0.1 mm by polishing, for example, when a mother substrate to be used first is a general 0.7 mm. Further, the substrate 14 made of a polished thin plate of the liquid crystal cell is reinforced by disposing the touch panel 90 immediately above the substrate 14.
Even if it is thin, sufficient strength can be obtained as a liquid crystal device with a touch panel.

Although the above description, particularly in FIGS. 4 and 5, the case where one substrate of the liquid crystal cell is thinned by polishing, both of the pair of substrates may be thinned by polishing. .

[0037]

As described above, in the present invention, at the time of manufacturing a liquid crystal device, at least one of the substrates can be reliably and efficiently reduced in thickness by polishing. Also, since the thickness of the substrate located on the front side of the liquid crystal device is thin, for example, in a liquid crystal device with a touch panel,
It is possible to provide a device with high display quality and high reliability at low manufacturing cost.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a cell body according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a procedure in a polishing process in a method for manufacturing a liquid crystal device according to an embodiment of the present invention.

FIG. 3 is a diagram showing another pattern of the outer peripheral seal of the cell body according to the embodiment of the present invention.

FIG. 4 is a diagram showing a configuration of a reflection type liquid crystal device using a polished thin plate according to an embodiment of the present invention as a substrate on the back side of the device.

FIG. 5 is a diagram showing a configuration of a liquid crystal device with a touch panel using the polished thin plate according to the embodiment of the present invention as a substrate on the front side of the device.

[Explanation of symbols]

10 cell body, 12 substrates, 14 substrates (polished thin plate),
20 outer peripheral seal, 22 open end, 24 open passage, 3
0 inner circumference seal, 32 liquid crystal injection port, 34 liquid crystal drive electrode, 36 liquid crystal layer, 38 polarizing plate, 40 liquid crystal device area, 50 polishing plate, 60 support plate, 70
Sticking plate, 72 holding material, 80 light scattering plate, 82
Reflector, 90 touch panel, 92 first substrate (transparent substrate), 94 second substrate (transparent substrate), 96 resistive film, 98
Spacer.

Claims (8)

[Claims] 1. A liquid crystal device comprising liquid crystal sealed in a gap between two substrates, wherein two mother substrates each having a plurality of individual liquid crystal devices are provided in a liquid crystal sealed region of each liquid crystal device region. Are bonded with a predetermined gap by an inner peripheral seal disposed so as to surround all of the plurality of liquid crystal device regions on the outer periphery of the two mother substrates. Liquid crystal device and manufacturing method thereof. 2. A liquid crystal device comprising a liquid crystal sealed in a gap between two substrates, wherein the two substrates are bonded together and then at least one of the two substrates is polished. A liquid crystal device and a method for manufacturing the same, wherein the thickness of the substrate is reduced, and a liquid crystal is filled in the liquid crystal filling region after the substrate is polished. 3. A liquid crystal device comprising liquid crystal sealed in a gap between two substrates, wherein two mother substrates each having a plurality of individual liquid crystal devices are provided in a liquid crystal sealed region of each liquid crystal device region. A predetermined gap is provided between the inner peripheral seal disposed to surround the plurality of liquid crystal device regions and the inner peripheral seal disposed to surround the two mother substrates. A liquid crystal device and a method for manufacturing the same, wherein at least one of the two mother substrates is polished to reduce the thickness of the mother substrate, and after the substrates are polished, liquid crystal is sealed in the liquid crystal sealing region. 4. A method of manufacturing a liquid crystal device comprising a liquid crystal sealed in a gap between two substrates, wherein two mother substrates having a plurality of individual liquid crystal devices are formed in each liquid crystal device region. An inner peripheral seal disposed to surround the liquid crystal enclosing region; and an outer periphery of the two mother substrates, which surrounds all of the plurality of liquid crystal device regions and is opened at a part of the outer periphery, and is surrounded by the outer peripheral seal. And an outer peripheral seal arranged so that an elongated opening passage extends from the inner area to the outer peripheral outermost end of the outer peripheral seal, with a predetermined gap therebetween, and polishing at least one of the two mother substrates bonded together by polishing. A liquid crystal device and a method for manufacturing the same, wherein the thickness of the mother substrate is reduced, and a liquid crystal is sealed in the liquid crystal sealed region after the substrate is polished. 5. The liquid crystal device according to claim 1, 3 or 4, wherein the outer peripheral seal or the opening passage is in the form of a maze near the outer periphery of the two mother substrates. And a method of manufacturing the same. 6. A polishing step in a liquid crystal device comprising liquid crystal sealed in a gap between two substrates, after bonding the two substrates with a predetermined gap and before sealing the liquid crystal in the gap. A thickness of at least one of the two substrates is reduced. 7. A liquid crystal device in which liquid crystal is sealed in a gap between two substrates, wherein at least one of the two substrates disposed on the front side of the device is a polished thin plate. Liquid crystal device. 8. The liquid crystal device according to claim 7, wherein the polished thin plate is about 0.1 mm to 0.3 m by polishing.
A liquid crystal device characterized in that the thickness of the substrate is reduced to a thickness of about m.