JP2007248955A - Method for manufacturing liquid crystal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal device in which it is hard to generate a gap failure by reducing distortion generated between a vacuum area and a part except the vacuum area when a plurality of liquid crystal panels are collectively prepared by using an ODF system. <P>SOLUTION: The method for manufacturing the liquid crystal device includes steps of: forming first seal materials 6a for a plurality of liquid crystal panels on a first substrate 1a; forming a vacuum area D on the periphery of the first seal materials 6a and forming gap material 31, 32 on the first substrate 1a. In the step of forming gap materials, the first gap material 31 in the peripheral part E1 in an area surrounded by the first seal members 6a is formed as a gap material which is easily elastically deformed than the second gap material 32 at the center part E2 of the area. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a liquid crystal device.

  In general, a liquid crystal device includes a pair of substrates provided with electrodes, a sealant that bonds the pair of substrates, and a liquid crystal layer sealed in a gap between the pair of substrates. Conventionally, a vacuum injection method is known as a method of sealing liquid crystal between a pair of substrates. In the vacuum injection method, a pair of substrates are bonded together with a sealing material, and liquid crystal is vacuum-injected between the substrates through an injection port opened in the sealing material. On the other hand, recently, a method called an ODF (One Drop Fill) method has attracted attention as a more efficient injection method. The ODF method is a method in which liquid crystal is dropped onto one substrate and bonded to the other substrate, so that a pair of substrates is bonded and a liquid crystal is injected between the substrates.

  On the other hand, as a method for producing a liquid crystal panel, a method called “multi-face drawing” is known in which a plurality of liquid crystal panels are produced at once using a large substrate. In this method, electrodes for a plurality of liquid crystal panels are first formed on a pair of large substrates, a sealing material for a plurality of liquid crystal panels is formed on one substrate, and then the pair of substrates are bonded together via the sealing material. This is cut to produce a panel structure for one row of liquid crystal panels. And after inject | pouring a liquid crystal inside the sealing material for several liquid crystal panels contained in this panel structure and sealing an injection hole, a panel structure is cut | disconnected and divided | segmented into each liquid crystal panel.

When multi-chamfering is performed by the ODF method, first, a sealing material for a plurality of liquid crystal panels is formed on one large substrate, and then liquid crystal is dropped inside the sealing material. And after bonding a large board | substrate in a vacuum environment, air release | releases to air | atmosphere, a sealing material is hardened, and it divides | segments into each liquid crystal panel. In this case, in order to pressurize the sealing material at atmospheric pressure, a sealing material called an outer peripheral sealing material is formed on the outer peripheral portion of the large substrate. The outer peripheral sealing material is formed in a closed frame shape so as to surround the outside of the sealing material for liquid crystal encapsulation. When an outer peripheral sealing material is provided on the outer periphery of the large substrate, a vacuum region is formed between the outer peripheral sealing material and the sealing material for liquid crystal sealing when the large substrate is bonded in a vacuum state, and this vacuum is released when the air is released to the atmosphere. The region is uniformly pressurized by atmospheric pressure (see, for example, Patent Documents 1 and 2).
JP 2005-148214 A JP 2005-148215 A

  However, when pressurization is performed using the vacuum region, the substrate is pressed more strongly in the vacuum region where the liquid crystal is not disposed than in the non-vacuum region where the liquid crystal is disposed. Inhomogeneities may occur. In other words, in the non-vacuum region where the liquid crystal is arranged, a rigid gap material (spacer) that holds the gap is arranged, so that the gap is not reduced even if pressure treatment is performed, but in the vacuum region where the liquid crystal is not arranged. Since such a gap material does not exist, when the atmospheric pressure is applied, the substrate bends in the direction of decreasing the gap, and as a reaction, the substrate bends in the direction of increasing the gap in the non-vacuum region. When such a bend is large, a gap is not uniform between the central portion and the peripheral portion of the non-vacuum region, and display defects such as color unevenness may occur.

  The present invention has been made in view of such circumstances, and when performing multi-chamfering using the ODF method, the bending of the substrate that occurs between the vacuum region and the portion other than the vacuum region is alleviated, and the gap It is an object of the present invention to provide a method for manufacturing a liquid crystal device capable of manufacturing a liquid crystal device that is less likely to cause defects.

  In order to solve the above problems, a method of manufacturing a liquid crystal device according to the present invention includes a step of forming a first sealing material for a plurality of liquid crystal panels on a first substrate, and the first sealing material on the first substrate. A step of forming an enclosing second sealing material, a step of forming a gap material on the first substrate or the second substrate, and an inner side of the first sealing material on the first substrate or the second substrate. Disposing a liquid crystal in a corresponding region; bonding the first substrate and the second substrate under a vacuum environment via the first sealing material and the second sealing material; and the first substrate and the Releasing the second substrate from the vacuum environment and pressurizing a vacuum region formed between the first sealing material and the second sealing material at atmospheric pressure, and forming the gap material In the process, the first portion of the peripheral portion of the region surrounded by the first sealing material Gap material than the second gap material of the central portion of the region, characterized in that it is formed as an elastic deformation easily gap material.

  As described above, when the gap material is not disposed in the vacuum region, when the vacuum region is pressurized to the atmosphere, a large gap non-uniformity is generated between the vacuum region and the non-vacuum region (the region surrounded by the first seal material). There is a case. As a cause of this, the present inventors focused on the difference in the ease of bending of the substrate between the vacuum region and the non-vacuum region. That is, in the conventional liquid crystal device, the repulsive force of the gap material is strong in the non-vacuum region, but the repulsive force of the gap material does not exist in the vacuum region. Therefore, the substrate disposed at the boundary portion uses the first sealing material as a fulcrum. As a result, a large gap non-uniformity occurred in the periphery of the non-vacuum region. Therefore, if the repulsive force of the gap material in the non-vacuum region is reduced, the force in the direction of reducing the gap acts on the non-vacuum region, so that the above-described bending of the substrate can be reduced. Therefore, in the present invention, the first gap material that is easily elastically deformed is disposed in the periphery of the non-vacuum region, and the substrate disposed on the first gap material reduces the gap when the pressure treatment is performed. It can be transformed into. According to this method, since the bending of the substrate with the first seal material as a fulcrum is reduced, the gap does not become extremely large in the peripheral portion of the non-vacuum region. As a result, the occurrence of color unevenness is suppressed, and a liquid crystal device with high display quality is provided.

  Here, as a method of using the first gap material as a gap material that is more elastically deformable than the second gap material, for example, the density of the first gap material is made smaller than the density of the second gap material. Adopting a method of making the elastic coefficient of one gap material smaller than that of the second gap material, making the cross-sectional area of the first gap material smaller than the cross-sectional area of the second gap material, or the like. it can.

  In the method for manufacturing a liquid crystal device according to the present invention, a step of forming a first sealing material for a plurality of liquid crystal panels on a first substrate and a second sealing material surrounding the first sealing material on the first substrate are formed. A step of forming a gap material on the first substrate or the second substrate, and disposing a liquid crystal in a region corresponding to the inside of the first sealing material on the first substrate or the second substrate. Bonding the first substrate and the second substrate in a vacuum environment via the first seal material and the second seal material, and bonding the first substrate and the second substrate from the vacuum environment Releasing and pressurizing a vacuum region formed between the first sealing material and the second sealing material at atmospheric pressure, and in the step of forming the gap material, the first sealing material The height of the first gap material in the periphery of the region surrounded by Characterized in that it is formed at the central portion and the second gap member height smaller than the height of the band.

  According to this method, the substrate disposed on the first gap material is deformed in the direction of reducing the gap when the pressure treatment is performed. Reduced compared to things. Therefore, the gap is not extremely increased in the peripheral portion of the non-vacuum region, and as a result, a liquid crystal device in which the occurrence of color unevenness is suppressed is provided.

  In the present invention, in the step of forming the gap material, a height of the second gap material arranged at a boundary portion between the second gap material and the first gap material is higher than a desired gap. It is desirable that

  As described above, in the method for manufacturing a liquid crystal device of the present invention, the gap around the non-vacuum region where the first gap material is disposed is smaller than the desired gap. Therefore, in the present invention, the height of the second gap material is slightly increased at the outer peripheral portion of the non-vacuum region so that a desired gap can be obtained at the peripheral portion of the non-vacuum region with the substrate deformed. According to this method, the gap does not become excessively small around the non-vacuum region, and a substantially uniform gap can be obtained even when viewed in the entire non-vacuum region.

[First Embodiment]
Hereinafter, the present invention will be described by taking a case of manufacturing a simple matrix type liquid crystal panel and a liquid crystal device as an example. FIG. 1 shows an embodiment of a method for manufacturing a liquid crystal panel according to the present invention. In the manufacturing method of the liquid crystal panel shown here, the large first substrate 1a shown in FIG. 2 is formed by a series of steps from step P1 to step P5. Further, a large second substrate 1b shown in FIG. 4 is formed by a series of steps from step P11 to step P14.

  In step P1, as shown in FIG. 2A, a plurality of liquid crystal panel first electrodes 3a are formed on a large first substrate 2a. In FIG. 2, the number of liquid crystal panels formed on one first base material 2a is 4 × 4 = 16. However, the number of liquid crystal panels formed depends on the size of the first substrate 2a and the liquid crystal panel to be manufactured. It is arbitrarily set according to the relationship with the size of. The first electrode 3a is formed in a stripe shape as a whole by arranging a plurality of linear electrodes in parallel with each other.

  Next, in step P2, as shown in FIG. 3, an acrylic resin or the like is applied onto the first substrate 2a and patterned to form a columnar gap material (spacer in the display area of each liquid crystal panel area 10. ) 31 and 32 are formed. Here, the first gap material 31 formed in the peripheral portion E1 of the display region is formed with a smaller cross-sectional area (size) than the second gap material 32 formed in the central portion E2 of the display region. Note that the gap members 31 and 32 are selectively formed only in the display region and are not formed in the terminal portion where the terminal 13 is provided.

  Next, in step P3, as shown in FIG. 2B, an alignment film 4a is formed in each liquid crystal panel region 10, and further, a rubbing process is performed on the alignment film 4a in step P4. By this rubbing treatment, liquid crystal molecules are aligned in one direction from the first substrate 1a side.

  In addition, the 1st base material 2a is formed with glass, a plastics, etc. The first electrode 3a is formed by using a photolithography method using, for example, ITO (Indium Tin Oxide) as a material. The alignment film 4a is formed by applying or printing polyimide, for example.

  After that, in step P5, as shown in FIG. 2C, epoxy resin or the like is annularly attached to each liquid crystal panel region 10 on the first base member 2a using a coating device 41, for example, by printing. 1 seal material 6a is formed. The first sealing material 6a is formed in a closed ring shape without a liquid crystal injection opening. Further, a closed annular second sealing material 6b surrounding the outer periphery of the plurality of first sealing materials 6a is formed on the outer peripheral portion of the first base material 2a.

  Thus, the large first substrate 1a on which a plurality of patterns for the liquid crystal panel is formed is manufactured. Note that optical elements other than the first electrode 3a and the alignment film 4a may be formed on the first substrate 1a as needed, but these additional optical elements are omitted in FIG. It is.

  On the other hand, in step P11 of FIG. 1, as shown in FIG. 4A, a plurality of second electrodes 3b corresponding to a plurality of liquid crystal panels are formed on a large second substrate 2b. The second electrode 3b is formed in a stripe shape as a whole by arranging a plurality of linear electrodes in parallel with each other. The second electrode 3 b is orthogonal to the first electrode 3 a shown in FIG. 2 at the center of each liquid crystal panel region 10. A region where the first electrode 3a and the second electrode 3b overlap in a plane is a dot (pixel), and a region where such dots are arranged in a matrix in each liquid crystal panel region 10 is a display region. The display area is a light modulation area where light modulation is performed by liquid crystal, and an arbitrary image is displayed by driving each pixel independently.

  Next, in step P12, as shown in FIG. 4B, an alignment film 4b is formed in each liquid crystal panel region 10, and in step P13, a rubbing process is performed on the alignment film 4b. By this rubbing treatment, liquid crystal molecules are arranged in one direction from the second substrate 1b side.

  Then, in process P14, as shown in FIG.4 (c), the liquid crystal L is arrange | positioned using the coating device 42 to each liquid crystal panel area | region 10 on the 2nd base material 2b, for example, is dripped. The liquid crystal L is disposed in a central portion of each liquid crystal panel region 10, that is, in a region corresponding to the inside of the first sealing material 6a formed on the first base material 2a. In addition, the liquid crystal L is arrange | positioned only by a required quantity according to the volume of the space enclosed by the base materials 2a and 2b and the 1st sealing material 6a.

  As described above, the large-sized second substrate 1b on which patterns for a plurality of liquid crystal panels are formed is manufactured. Note that optical elements other than the second electrode 3b and the alignment film 4b may be formed on the second substrate 1b as needed, but these additional optical elements are omitted in FIG. It is.

  In addition, the 2nd base material 2b is formed with glass, a plastics, etc. The second electrode 3b is formed by using a photolithography method using, for example, ITO (Indium Tin Oxide) as a material. The alignment film 4b is formed by applying or printing polyimide, for example.

  As described above, when the first substrate 1a of FIG. 2 and the second substrate 1b of FIG. 4 are formed, the first substrate 1a and the second substrate 1b are placed in the vacuum chamber in the process P21 of FIG. Then, as shown in FIG. 5A, the first substrate 1a and the second substrate 2b are bonded together in a vacuum environment with the first sealing material 6a and the second sealing material 6b interposed therebetween. At this time, the liquid crystal L spreads in a space (gap between the substrates) surrounded by the first substrate 1a, the second substrate 1b, and the first sealing material 6a, and forms a liquid crystal layer. Further, since the liquid crystal L is blocked by the first sealing material 6a, it does not leak outside beyond the first sealing material 6a. Therefore, a region surrounded by the first sealing material 6a and the second sealing material 6b is a vacuum region D. The substrates 1a and 1b are bonded to each other so that the first electrode 3a and the second electrode 3b are substantially orthogonal to each other.

  Next, as shown in FIG. 5B, the first substrate 1a and the second substrate 1b are taken out from the vacuum chamber and released into the atmosphere. At this time, since the vacuum region D is maintained in a vacuum state, the first substrate 1a and the second substrate 1b are uniformly pressurized by atmospheric pressure. And the 1st sealing material 6a and the 2nd sealing material 6b are fully crushed, and a uniform gap is formed between the 1st substrate 1a and the 2nd substrate 1b. Thereafter, by curing the first sealing material 6a and the second sealing material 6b, a large panel structure 7 having a plurality of liquid crystal panels is formed.

  FIG. 6 is a cross-sectional view for explaining a state when the substrate is pressurized at atmospheric pressure. In FIG. 6, the solid line indicates the shape of the member before pressing the substrate, and the dotted line indicates the shape of the member when pressing the substrate.

  As shown in FIG. 6, the first substrate 1a and the second substrate 1b include a bead-shaped gap material 14 disposed inside the first sealing material 6a and a first material disposed inside the first sealing material 6a. The gap material 31 and the second gap material 32 are held at regular intervals. When the bonded substrates are released to the atmosphere, the first substrate 1a and the second substrate 1b are pressurized by the atmospheric pressure PA applied to the vacuum region D, and the gap material 14 and the first gap material 31 sandwiched between them. The second gap material 32 is crushed. Then, when the atmospheric pressure PA and the repulsive forces PS1 and PS2 of the gap material are balanced, the gap material stops being crushed.

  Here, since the first gap material 31 and the second gap material 32 are formed with different areas, the repulsive forces PS1 and PS2 against crushing are also different from each other. That is, since the first gap material 31 is a gap material having a small aspect ratio and a large area, it is easily elastically deformed by the atmospheric pressure PA, and the repulsive force PS1 is also small. On the other hand, since the second gap material 32 is a gap material having a large area and a small aspect ratio, it is not easily elastically deformed by the atmospheric pressure PA, and the repulsive force PS2 is also large. Therefore, when the atmospheric pressure is uniformly applied to the substrate, the gap between the substrates is controlled to the height of the second gap material 32 in the display region central portion E2 where the second gap material 32 is disposed, and the first gap material 31 is applied. In the display area peripheral portion E1 in which is arranged, the gap is controlled to be slightly smaller than the gap.

  On the other hand, in the vacuum region D, there is no gap material that supports the substrate. Therefore, the gap between the substrates is smaller than the non-vacuum region where the liquid crystal layer 5 is formed, and the influence of the deflection of the substrate reaches the display region peripheral portion E1. Here, if the first gap material 31 in the display area peripheral portion E1 is a rigid gap material, the influence of the bending of the substrate cannot be exerted on the display area peripheral portion E1, and as a reaction, the first seal material 6a. However, in this embodiment, the first gap member 31 is configured as a gap member that can be easily elastically deformed. Therefore, the substrate in the display area peripheral portion E1 is deformed by the bending of the substrate in the vacuum region D. Accordingly, the deflection of the substrate generated in the vacuum region D is averaged over a wide range including the display region peripheral portion E2, and the change in the gap due to the deflection of the substrate is also alleviated.

  The reason for this will be described with reference to FIG.

  As shown in FIG. 7A, when the first gap material 31 is a rigid gap material, a large repulsive force PS0 due to the gap material is generated in the display area peripheral portion E1, and a large stress is generated between the display area and the vacuum area D. An imbalance occurs. In this case, since the vacuum region D is pressed more strongly than the display region peripheral portion E1, the second substrate 1b is largely inclined with the gap material 14 as a fulcrum, and as a reaction, the display region peripheral portion E1 has Large gap non-uniformities occur. On the other hand, as shown in FIG. 7B, when the first gap material 31 is a flexible gap material, such a stress imbalance is small. For this reason, the inclination of the second substrate 1b with the gap material 14 as a fulcrum also becomes small, and the non-uniformity of the gap as a whole display area becomes small. When the first gap material 31 is easily crushed in this way, the gap in the display area peripheral portion E1 is slightly deviated from the desired gap, but when the influence on the entire display area is considered, It is rather preferable from the viewpoint of the uniformity of the gap in the entire display area that the gap material is crushed at the display area peripheral portion E1 to relax the deformation of the second substrate 1b in the vicinity of the gap material 14.

  When the bonding of the substrates is completed as described above, in step P22, the groove G1 shown in FIG. 2 is formed on the first base 2a, and the grooves G2, G3, and G4 shown in FIG. 4 are further formed on the second base 2b. 8 and a plurality of liquid crystal panels 12 as shown in FIG. 8 are manufactured by cutting and separating the panel structures according to the grooves. In the liquid crystal panel 12, the first substrate 1a has a projecting portion 1c that projects to the outside of the second substrate 1b. On the projecting portion 1c, signals and power are exchanged with an external circuit. Terminal 13 is formed.

  The first electrode 3 a formed on the first substrate 1 a passes through the sealing material 6 a and protrudes to the outside to become a wiring 15, and the wiring 15 is connected to the terminal 13. On the other hand, the second electrode 3 b formed on the second substrate 1 b is connected to the wiring 16 through the conductive material 14 mixed in the sealing material 6 a, and the wiring 16 is connected to the terminal 13.

  After the liquid crystal panel 12 is manufactured as described above, in Step P23, as shown in FIG. 9, polarizing plates 17a and 17b are attached to the outer surfaces of the first base material 2a and the second base material 2b.

  Further, in step P24, a liquid crystal driving IC is mounted on the terminal 13 formed on the protruding portion 1c of the first substrate 1a shown in FIG. 8 via, for example, an FPC (Flexible Printed Circuit). Thereby, the target liquid crystal device is completed. The manufactured liquid crystal device is a simple matrix type liquid crystal panel that does not use active elements. The first electrode 3a and the second electrode 3b intersect at a plurality of points arranged in a dot matrix, and one dot for image formation is formed by one of these intersections, and the display area is formed by the collection of these dots. It is formed.

  In this liquid crystal device, by controlling the voltage applied to each dot, the orientation of the liquid crystal present in those dots is controlled for each dot. By this orientation control, the light passing through each dot is modulated to select one that passes through the polarizing plate 17a or 17b in FIG. 7 and one that does not pass through it, whereby the outside of the first substrate 2a or the second substrate 2b. Images such as letters, numbers, etc. are displayed on the outside.

  In FIG. 9, light supplied to the liquid crystal layer 5 is given by a reflection method or a transmission method. The reflection method means that a reflection film (not shown) is formed on the surface of the first substrate 2a or the second substrate 2b on the liquid crystal layer 5 side or on the surface opposite to the liquid crystal layer 5, and light from the outside. For example, sunlight, room light, etc. are reflected by the reflective film and supplied to the liquid crystal layer 5. On the other hand, the transmissive method is that an illuminating device is arranged on the surface of either the first substrate 2a or the second substrate 2b opposite to the liquid crystal layer 5, and light from the illuminating device is transmitted to the first substrate 2a or the second substrate In this method, the two substrates 2 b are transmitted and supplied to the liquid crystal layer 5.

  As described above, in the method of manufacturing the liquid crystal device according to the present embodiment, the first gap material 31 that is easily elastically deformed is disposed in the peripheral portion E1 of the display area, and the first gap is formed when the pressure treatment is performed. The substrate disposed on the material 31 can be deformed in the direction of reducing the gap. For this reason, the bending of the substrate with the first sealing material 6a (the gap material 14 mixed in the first sealing material 6a) as a fulcrum is reduced, and the gap does not become extremely large in the display area peripheral portion E1. As a result, occurrence of color unevenness and the like can be suppressed, and a liquid crystal device with high display quality can be provided.

In the present embodiment, the rigidity of the first gap material 31 and the second gap material 32 is adjusted by changing the area of the gap material on which both are installed. However, the method of changing the rigidity of the gap material is not limited to this. For example, if the material of the first gap material 31 is previously made a material having a smaller elastic coefficient than the material of the second gap material 32, the present embodiment will be described. The same effect as the form can be obtained.
[Second Embodiment]
FIG. 10 is a diagram showing a process of the second embodiment of the method for manufacturing a liquid crystal panel according to the present invention. The process shown in FIG. 10 is different from the corresponding process in the first embodiment shown in FIG. 3 in that the density of the first gap material 31 in the display area peripheral portion E1 is the density of the second gap material 32 in the display area central portion E2. Is smaller than that. In addition, the size (cross-sectional area) of the 1st gap material 31 and the 2nd gap material 32 is the same. In this configuration, when viewed as the entire display area, the gap material 31 in the display area peripheral portion E1 is more easily elastically deformed than the gap material 32 in the display area central portion E2. Therefore, a substantially uniform gap can be obtained over the entire display area as in the first embodiment.
[Third Embodiment]
FIG. 11 is a diagram showing a process of the third embodiment of the method for manufacturing a liquid crystal panel according to the present invention. The process shown in FIG. 11 is different from the corresponding process in the second embodiment shown in FIG. 10 in that the height d1 of the first gap material 31 in the display area peripheral portion E1 is set to the second gap material 32 in the display area central portion E2. That is, it is smaller than the height d2. In this configuration, the gap at the display area peripheral portion E1 is reduced when the opposing substrate is pressurized at atmospheric pressure, so that the bending of the substrate at the boundary of the vacuum area can be reduced. Therefore, a substantially uniform gap can be obtained over the entire display area as in the first embodiment.
[Fourth Embodiment]
FIG. 12 is a diagram showing a process of a fourth embodiment of the method for manufacturing a liquid crystal panel according to the present invention. The process shown in FIG. 12 is different from the corresponding process of the first embodiment shown in FIG. 6 in that the second gap material 32 in the display area central part E2 is in the vicinity of the boundary with the display area peripheral part E1. That is, the height d3 of the gap material 32 is made higher than the height d4 of the other second gap material 32. As described above, in the method of manufacturing the liquid crystal device according to the first embodiment, the gap in the display area peripheral portion E1 where the first gap material 31 is disposed is smaller than the desired gap. Therefore, in the present embodiment, the height of the second gap member 32 is slightly increased at the central portion E2 of the display region so that a desired gap can be obtained in the display region peripheral portion E1 with the substrate deformed. According to this method, the gap does not become excessively small at the display area peripheral portion E1, and a substantially uniform gap can be obtained even when viewed in the entire display area.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but it goes without saying that the present invention is not limited to such examples. Various shapes, combinations, and the like of the constituent members shown in the above-described examples are examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

  For example, in the above embodiment, the present invention is applied to a simple matrix type liquid crystal panel. However, the present invention is a liquid crystal panel having any other structure, for example, a TDF (Thin Film Diode) element or the like. The present invention can also be applied to an active matrix liquid crystal panel using a switching element, an active matrix liquid crystal panel using a three-terminal switching element such as a TFT (Thin Film Transistor) element, and the like.

It is process drawing which shows 1st Embodiment of the manufacturing method of a liquid crystal panel. It is process drawing which shows the manufacturing process of a 1st board | substrate. It is sectional drawing which shows the structure of a gap material. It is process drawing which shows the manufacturing process of a 2nd board | substrate. It is process drawing which shows the bonding process of a board | substrate. It is process drawing which shows the bonding process of a board | substrate. It is explanatory drawing for demonstrating the effect | action of a gap material. FIG. 2 is a plan view showing a partially broken liquid crystal panel manufactured by the manufacturing method of FIG. 1. It is sectional drawing which follows the AA 'line of FIG. It is process drawing which shows 2nd Embodiment of the manufacturing method of a liquid crystal panel. It is process drawing which shows 3rd Embodiment of the manufacturing method of a liquid crystal panel. It is process drawing which shows 4th Embodiment of the manufacturing method of a liquid crystal panel.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a ... 1st board | substrate, 1b ... 2nd board | substrate, 2a ... 1st base material, 2b ... 2nd base material, 5 ... Liquid crystal layer, 6a ... 1st sealing material, 6b ... 2nd sealing material, 7 ... Panel structure , 12 ... Liquid crystal panel, 31 ... First gap material, 32 ... Second gap material, D ... Vacuum region, E1 ... Display region periphery (periphery of region surrounded by first seal material), E2 ... Display region center Part (central part of the region surrounded by the first sealing material), L ... liquid crystal

Claims (6)

Forming a first sealing material for a plurality of liquid crystal panels on a first substrate;
Forming a second sealing material surrounding the first sealing material on the first substrate;
Forming a gap material on the first substrate or the second substrate;
Disposing a liquid crystal in a region corresponding to the inside of the first sealing material on the first substrate or the second substrate;
Bonding the first substrate and the second substrate through the first sealing material and the second sealing material in a vacuum environment;
Releasing the first substrate and the second substrate from the vacuum environment, and pressurizing a vacuum region formed between the first sealing material and the second sealing material at atmospheric pressure,
In the step of forming the gap material, the first gap material in the periphery of the region surrounded by the first seal material is formed as a gap material that is more elastically deformed than the second gap material in the center of the region. A method of manufacturing a liquid crystal device.   The method for manufacturing a liquid crystal device according to claim 1, wherein in the step of forming the gap material, the density of the first gap material is made smaller than the density of the second gap material.   2. The method of manufacturing a liquid crystal device according to claim 1, wherein, in the step of forming the gap material, an elastic coefficient of the first gap material is made smaller than an elastic coefficient of the second gap material.   2. The method of manufacturing a liquid crystal device according to claim 1, wherein, in the step of forming the gap material, a cross-sectional area of the first gap material is made smaller than a cross-sectional area of the second gap material. Forming a first sealing material for a plurality of liquid crystal panels on a first substrate;
Forming a second sealing material surrounding the first sealing material on the first substrate;
Forming a gap material on the first substrate or the second substrate;
Disposing a liquid crystal in a region corresponding to the inside of the first sealing material on the first substrate or the second substrate;
Bonding the first substrate and the second substrate through the first sealing material and the second sealing material in a vacuum environment;
Releasing the first substrate and the second substrate from the vacuum environment, and pressurizing a vacuum region formed between the first sealing material and the second sealing material at atmospheric pressure,
In the step of forming the gap material, the height of the first gap material in the peripheral portion of the region surrounded by the first seal material is formed to be smaller than the height of the second gap material in the central portion of the region. A method for manufacturing a liquid crystal device. In the step of forming the gap material, a height of the second gap material arranged at a boundary portion between the second gap material and the first gap material is formed higher than a desired gap. A method for manufacturing a liquid crystal device according to claim 1.

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