JP2014066739A - Method of manufacturing sealing element - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel technique for forming a cell structure of a glass substrate and a film substrate.SOLUTION: A method of manufacturing a sealing element includes the steps of; preparing a glass substrate which includes a cell formation region and an outside region of the cell formation region and has a thermosetting sealant formed on the cell formation region; disposing, on the glass substrate, a film member which includes a film substrate part to be disposed on the cell formation region and a dummy film substrate part arranged on the outside of the film substrate part and has the film substrate part completely or partially separated from the dummy film substrate part; hardening the thermosetting sealant by heat press to form an empty cell having a structure where the glass substrate and the film substrate part face each other; and removing the dummy film substrate part from on the glass substrate.

Description

  The present invention relates to a method for manufacturing a sealing element in which, for example, liquid crystal is sealed.

  In the manufacturing technology of a liquid crystal element, a method of forming a cell structure by making a glass substrate and a plastic substrate face each other is proposed instead of a method of forming a cell structure by making a glass substrate and a glass substrate face each other (for example, Patent Document 1).

  It is conceivable to use a plastic film substrate as the plastic substrate. When trying to form a cell structure with a glass substrate and a film substrate, various new technical difficulties can arise.

JP 2002-268042 A

  An object of the present invention is to provide a novel technique for forming a cell structure with a glass substrate and a film substrate.

According to one aspect of the present invention,
Including a cell forming region and an outer region of the cell forming region, and preparing a glass substrate having a thermosetting sealing material formed on the cell forming region;
Whether the film substrate portion includes a film substrate portion disposed on the cell formation region and a dummy film substrate portion disposed outside the film substrate portion, and the film substrate portion is completely separated from the dummy film substrate portion. Or a step of disposing a partially separated film member on the glass substrate;
Curing the thermosetting sealing material by hot pressing to form an empty cell having a structure in which the glass substrate and the film substrate portion face each other;
And a step of removing the dummy film substrate portion from the glass substrate.

  By performing the hot press in a state where the dummy film substrate portion is disposed outside the film substrate portion, it is possible to suppress damage to the glass substrate due to the hot press.

FIG. 1 is a schematic cross-sectional view of a liquid crystal display device according to a first embodiment and a second embodiment. 2A to 2C are schematic perspective views showing main steps of the method of manufacturing the liquid crystal display element according to the first embodiment. 2D to 2G are schematic perspective views illustrating main processes of the method of manufacturing the liquid crystal display element according to the first embodiment. FIG. 3A to FIG. 3C are schematic perspective views showing main steps of a method for manufacturing a liquid crystal display device according to the second embodiment. 3D to 3G are schematic perspective views illustrating main processes of the method of manufacturing the liquid crystal display device according to the second embodiment. FIG. 4 is a schematic cross-sectional view of the liquid crystal display device according to the third embodiment. FIG. 5A to FIG. 5C are schematic perspective views showing main steps of a method for manufacturing a liquid crystal display device according to the fourth embodiment.

  With reference to FIG. 1, liquid crystal display elements according to first and second embodiments of the present invention will be described. FIG. 1 is a cross-sectional view showing a schematic structure of a vertical alignment (VA) type liquid crystal display device according to a first embodiment and a second embodiment.

  One of the pair of transparent substrates 1 and 11 forming the liquid crystal cell is a glass substrate 1 and the other is a film substrate 11. The glass substrate 1 has a thickness of, for example, 0.3 mm to 0.4 mm. In the liquid crystal element used with the substrate bent, the thickness of the glass substrate 1 is preferably 0.4 mm or less. The thickness of the glass substrate 1 can be appropriately selected as necessary. In addition, when the thickness of the glass substrate 1 is 0.7 mm or more, the strength is increased and it is not suitable for use in a bent state.

  The film substrate 11 is a plastic film having flexibility. When forming a display element, it is preferable to form the film substrate 11 with a material with a small in-plane retardation, and polycarbonate can be used as a material with a small in-plane retardation, for example. The thickness of the film substrate 11 is, for example, about 100 μm to 130 μm.

  A liquid crystal layer 4 is sandwiched between the glass substrate 1 and the film substrate 11. For each of the glass substrate 1 and the film substrate 11, electrode layers 2 and 12 are formed on the inner surface on the liquid crystal layer side, and alignment films 3 and 13 are formed on the electrode layers 2 and 12. Polarizing plates 5 and 15 are disposed outside the glass substrate 1 and the film substrate 11, respectively.

  Next, a method for manufacturing a liquid crystal display device according to the first and second embodiments will be described. Multi-cavity taking a plurality of liquid crystal cells from one mother glass substrate is performed. First, steps common to the first and second embodiments will be described.

  As a glass substrate to be a mother glass substrate, for example, white plate glass having a size of 150 mm × 150 mm and a thickness of 0.3 mm is prepared. For example, an indium tin oxide (ITO) layer is formed into a thickness of 200 nm by sputtering on a glass substrate to form an electrode layer. The electrode layer is patterned by lithography and wet etching, for example, so as to have a shape corresponding to a desired display.

  On the glass substrate on which the electrode layer is formed, a non-conductive black light-shielding resin film is formed with a spinner and temporarily fired. The light shielding resin film is exposed and developed using a photomask having a spacer pattern, and then the light shielding resin film is baked to form a spacer made of the light shielding resin film. The spacer pattern is, for example, a diamond-shaped spacer having a side of 20 μm arranged at a pitch of 100 μm vertically and horizontally.

  Further, a photosensitive translucent resin film is formed with a spinner and pre-baked. The light-transmitting resin film is exposed and developed using a photomask having a pattern similar to the spacer pattern of the light-blocking resin film, and then the light-transmitting resin film is baked. In this manner, a spacer having a laminated structure of a light shielding resin film and a light transmitting resin film is formed on the glass substrate. The spacer thickness is, for example, about 3.3 μm. Note that the spacer may be a single layer of translucent resin film.

  As a film member on which an electrode layer is formed, for example, a 30Ω □ transparent conductive film is formed on the entire surface of a Teijin DuPont polycarbonate film, and the thickness is approximately the same as the mother glass substrate. Is approximately 120 μm (the thickness of the transparent conductive film is probably about 200 nm).

  The electrode layer on the film member is patterned so as to have a shape corresponding to a desired display. Laser etching (ablation) for patterning by evaporating the transparent conductive film by laser light irradiation can be used for the electrode layer on the film member. Laser etching can also be used for film materials that have low resistance to acidic chemicals (such as hydrochloric acid) used in patterning by wet etching.

  Subsequently, a method for manufacturing the liquid crystal display device according to the first embodiment will be described. An alignment film is formed on each of the glass substrate and the film member. For example, a vertical alignment film manufactured by Nissan Chemical Co., Ltd. having a surface free energy of 35 mN / m to 38 mN / m is pattern-printed in a seal frame of each liquid crystal cell by flexographic printing. Pre-baking is performed at 90 ° C. for 15 minutes, and main baking is performed at 180 ° C. for 30 minutes. Next, a rubbing process is performed on the alignment film on the glass substrate side. After the alignment film is formed, a film substrate which is a portion used as a substrate of each liquid crystal cell is cut out from the film member.

  2A to 2G are schematic perspective views showing main steps of the method of manufacturing the liquid crystal display device according to the first embodiment.

  Refer to FIG. 2A. A thermosetting sealing material 21 is formed on the glass substrate 1 on which the alignment film has been formed and subjected to the rubbing treatment. As the thermosetting sealing material 21, it is preferable to use a low-temperature one having a firing temperature of, for example, 70 ° C. or less, and for example, an epoxy-based sealing material that can be fired at 70 ° C. can be used.

  More specifically, for example, a Mitsui Chemicals sealing material to which 2 wt% of silica particles having a particle diameter of 3.2 μm are added is formed from the outer periphery of the facing portion of the glass substrate 1 and the film substrate 11 in each liquid crystal cell formation region 22. Apply 1 mm inside with a dispenser.

  In the conductive pad portion between the glass substrate 1 and the film substrate 11, for example, 2 wt% of gold-coated plastic particles having a particle size of 3.5 μm is added in addition to the silica particles. Further, in FIG. 2A, an injection port for vacuum injection is disposed at the right edge of each liquid crystal cell.

  Refer to FIG. 2B. FIG. 2B shows the film substrate portion 11 of each liquid crystal cell cut from the entire film member.

  Refer to FIG. 2C. FIG. 2C shows a dummy film substrate 11a which is a remaining portion obtained by cutting the film substrate portion 11 from the entire film member. The dummy film substrate portion 11a is hatched. In addition, as for the dummy film board | substrate part 11a, the four corner parts of the whole film member are further cut off as an arrangement | positioning part of the ultraviolet curable adhesive in a next process.

  As will be described later, the dummy film substrate 11a is disposed outside the film substrate 11 during hot pressing of the sealing material to suppress damage to the glass substrate 1, and is removed after the hot pressing is completed.

  Reference is made to FIG. 2D. Each film substrate 11 is aligned with each liquid crystal cell formation region 22 on the glass substrate 1 on which the sealing material 21 is formed. Further, the dummy film substrate 11 a is aligned so as to cover the outer region of the film substrate 11.

  UV curable adhesives 23 are formed on the four corners of the glass substrate 1 that are not covered with the dummy film substrate 11a. As the ultraviolet curable adhesive 23, for example, an acrylic ultraviolet curable resin can be used.

  The hot press substrate 24 is superposed on the glass substrate 1. In addition, in order to avoid the complexity of illustration, in FIG. 2D, the hot-press substrate 24 is shown separated from the glass substrate 1. As the hot press substrate 24, for example, a glass substrate having the same size and thickness as the mother glass substrate 1 can be used.

  The ultraviolet curable adhesive 23 is irradiated with ultraviolet rays to be cured, and the hot press substrate 24 is fixed to the glass substrate 1. By being sandwiched between the glass substrate 1 and the hot press substrate 24, the positions of the film substrate 11 and the dummy film substrate 11a are also fixed (the film substrate 11 is temporarily fixed).

Next, the thermosetting sealing material 21 is cured by hot pressing, and each film substrate 11 is bonded to the glass substrate 1 to form an empty cell of each liquid crystal cell. The firing conditions of the thermosetting sealing material 21 are, for example, 70 ° C. and 30 minutes. The pressure applied between the glass substrate 1 and the hot press substrate 24 is, for example, 1.1 kgf / cm ² . The jig of the hot press apparatus can alleviate the impact on the substrate by sandwiching rubber or cloth between the metal plates holding the substrate.

  In the manufacturing method of the first embodiment, the case where the dummy film substrate 11a is not disposed is taken as a first comparative example. The inventor of the present application has found that the glass substrate 1 is easily broken even when the impact of the hot press is reduced by rubber or the like in the method of the first comparative example. In the method of the first comparative example, it is considered that such a crack is likely to occur due to a step caused by the film thickness between the arrangement portion of the film substrate 11 and the outside thereof.

  In the method of the first embodiment, by arranging the dummy film substrate 11 a outside the film substrate 11, it is difficult to generate a step region where no film-like member is arranged. Thereby, the crack of the glass substrate 1 at the time of hot press can be suppressed.

  Refer to FIG. 2E. After the thermosetting sealing material 21 is cured, the hot press substrate 24 is removed, and the dummy film substrate 11a is removed.

  Refer to FIG. 2F. The mother glass substrate 1 is scribed to separate the liquid crystal cells. In this way, individual empty cells are formed. The external extraction electrode terminal is formed on the glass substrate 1 side. For this reason, in each liquid crystal cell, the glass substrate 1 is larger than the film substrate 11 at a portion 25 on one side where the external extraction electrode terminals are arranged.

  Reference is made to FIG. 2G. After the liquid crystal material 4 is vacuum-injected into the empty cell, the inlet is sealed with an ultraviolet curable resin. For example, a liquid crystal material manufactured by DIC having Δε <0 and Δn of about 0.1 can be used.

  Thereafter, the glass substrate end face of the external extraction electrode terminal portion is chamfered, and the liquid crystal cell is washed with a neutral detergent and dried. Then, the viewing angle compensation plate and the polarizing plate are laminated and bonded to the outside of the segment substrate (for example, glass substrate), and the polarizing plate is bonded to the outside of the common substrate (for example, film substrate). For example, a negative biaxial optical anisotropy viewing angle compensator having an in-plane retardation of 55 nm and a thickness direction retardation of 220 nm can be used. Finally, a lead frame is connected to the terminal portion. In this way, the liquid crystal display element according to the first embodiment is formed.

  Next, a method for manufacturing a liquid crystal display device according to the second embodiment will be described. The patterning of the electrode layer on the glass substrate, the formation of the spacer on the glass substrate, and the patterning of the electrode layer on the film member are the same as in the first embodiment.

  In the first example, the film substrate portion used as the substrate of each liquid crystal cell was completely separated from the film member. In the second embodiment, the film member is subjected to a half cut that partially cuts the film substrate portion. In addition, the process which partly separates a film substrate part is not restricted to a half cut, For example, you may form a perforation.

  An alignment film is formed on each of the glass substrate and the film member. For example, a vertical alignment film manufactured by Nissan Chemical Co., Ltd. having a surface free energy of 35 mN / m to 38 mN / m is pattern-printed in a seal frame of each liquid crystal cell by flexographic printing. Pre-baking is performed at 90 ° C. for 15 minutes, and main baking is performed at 180 ° C. for 30 minutes. Next, a rubbing process is performed on the alignment film on the glass substrate side.

  3A to 3G are schematic perspective views showing main steps of a method for manufacturing a liquid crystal display device according to the second embodiment.

  Refer to FIG. 3A. In the same manner as in the first embodiment, a thermosetting sealing material 21 is formed on the glass substrate 1 on which the alignment film is formed and the rubbing process is performed.

  Refer to FIG. 3B. FIG. 3B shows the film member 11b that has been subjected to a half-cut process. A half cut 26 is formed at the boundary between the film substrate portion 11 and the outer portion (dummy film substrate portion) 11a. The half cut 26 is indicated by a dotted line. In addition, the four corner parts of the film member 11b are cut out as the arrangement | positioning part of the ultraviolet curable adhesive in a next process.

  Refer to FIG. 3C. The film member 11b is aligned on the glass substrate 1 on which the sealing material 21 is formed. The ultraviolet curable adhesive 23 is formed at the four corners of the glass substrate 1 from which the film member 11b has been cut. Similar to the first embodiment, the hot press substrate 24 is superposed on the glass substrate 1. In addition, in order to avoid the complexity of illustration, in FIG. 3C, the hot-press substrate 24 is shown separately from the glass substrate 1.

  Thereafter, as in the first embodiment, the ultraviolet curable adhesive 23 is cured, the hot press substrate 24 is fixed to the glass substrate 1, the thermosetting sealing material 21 is cured by hot pressing, and each film is applied to the glass substrate 1. The substrate portion 11 is bonded to form an empty cell for each liquid crystal cell.

  Reference is made to FIG. 3D. After the thermosetting sealing material 21 is cured, the hot press substrate 24 is removed. And the dummy film board | substrate 11a which is the outer part of the film board | substrate 11 is peeled off and removed from the film member 11b. With the half cut 26, only the dummy film substrate portion 11a can be easily peeled off.

  Refer to FIG. 3E. FIG. 3E shows the dummy film substrate portion 11a that has been peeled off. The dummy film substrate portion 11a is hatched.

  Reference is made to FIG. 3F. As in the first embodiment, the mother glass substrate 1 is scribed to separate the liquid crystal cells.

  Reference is made to FIG. 3G. As in the first embodiment, the liquid crystal material 4 is injected into the empty cell and the injection port is sealed.

  Further, the liquid crystal display element according to the second embodiment is formed by attaching a polarizing plate or the like.

  In the manufacturing method of the second embodiment, the case where the film substrate is not subjected to a partial cutting process such as a half cut is defined as a second comparative example. The method of the second comparative example requires a step of cutting the film substrate with a cutter or the like after the thermosetting sealing material is cured.

  As described above, the external extraction electrode terminal of each liquid crystal cell is formed on the glass substrate side, and the glass substrate 1 is larger than the film substrate 11 in the arrangement portion 25 of the external extraction electrode terminal. Accordingly, the edge of the film substrate 11 of the arrangement portion 25 of the external extraction electrode terminal intersects with the external extraction electrode formed on the glass substrate 1. In the method of the second comparative example, the external extraction electrode may be damaged when the film substrate is cut with a cutter.

  In the method of the second embodiment, the outer portion (dummy film substrate portion) of the film substrate can be easily removed by partially separating the edge of the film substrate in advance. Thereby, the damage of the above electrodes is suppressed.

  In the method of the second embodiment, similarly to the first embodiment, the dummy film substrate is disposed outside the film substrate during hot pressing, and the step is suppressed. Thereby, the crack of a glass substrate can be suppressed.

  In the method of the first embodiment, the film substrate and the dummy film substrate of each liquid crystal cell are aligned. In the method of the second embodiment, the film substrate portion is not completely separated from the dummy film substrate portion, and the entire film member can be handled integrally. Therefore, alignment of the film substrate of each liquid crystal cell and the dummy film substrate can be performed simultaneously by alignment of the film member.

  In the methods of the first and second embodiments, the glass substrate and the hot-press substrate are fixed with a photo-curable adhesive before the hot press for curing the thermosetting sealing material. Thereby, a film substrate can be temporarily fixed. If hot pressing is performed without temporarily fixing the film substrate, the film substrate is likely to be displaced during hot pressing. Such misalignment can be suppressed by the methods of the first and second embodiments.

  The film substrate expands due to the high temperature during hot pressing, and the sealing material is cured while the film substrate is expanded. The film substrate shrinks by cooling. Due to this, the mother glass substrate is curved. When the mother glass substrate is curved, it becomes difficult to use a scribing device or a braking device. Moreover, since the stress which tries to eliminate a curvature is always added to a glass substrate, there exists a concern about peeling of a seal | sticker and a fracture | rupture.

  Such curvature can be suppressed as the seal firing temperature during hot pressing is lower. In the first embodiment and the second embodiment, for example, a seal material that can be fired at a low temperature of 70 ° C. (compared to a seal material having a firing temperature of 150 ° C. or 120 ° C.) is used.

  As a technique for suppressing such bending, the inventor of the present application has found that it is preferable to lower the seal firing temperature to, for example, 70 ° C. or less, and preferably heat-treats (anneal) the film in advance. I discovered that.

  The film used for the substrate is made of polycarbonate, for example, and the glass transition temperature of polycarbonate is 215 ° C. The film can be preliminarily contracted by heat treatment at a high temperature lower than the glass transition temperature, for example, at a high temperature between 160 ° C. and 200 ° C., for example, for 30 minutes to 3 hours and cooling. The curl shape remains on the film that has been shrunk by annealing. The annealed film is placed on a glass substrate and the thermosetting sealing material is baked to cure the sealing material.

  The relationship between the seal firing temperature and annealing and the size of the curve was experimentally investigated. As a result, the curvature was 150 ° C. fired seal and film without annealing> 150 ° C. fired seal and film with annealing> 120 ° C. fired seal and film without annealing> 120 ° C. fired seal and film with annealing. Thus, it was found that the curvature can be reduced by lowering the seal firing temperature, and the curvature can be reduced by annealing the film.

  In the methods of the first and second embodiments, an alignment film is formed on the film substrate. As firing of the alignment film, for example, heat treatment is performed at 180 ° C. for 30 minutes. In the first and second embodiments, this heat treatment also serves as annealing for imparting shrinkage to the film. The direction of curl when the annealed film is placed on the glass substrate is not particularly problematic. The direction of curl accompanying the formation of the alignment film is convex toward the alignment film.

  Next, with reference to FIG. 4, the liquid crystal display element by 3rd Example is demonstrated. FIG. 4 is a sectional view showing a schematic structure of an in-plane switching (IPS) type liquid crystal display device according to the third embodiment.

  The point that one of the pair of transparent substrates 1 and 31 forming the liquid crystal cell is the glass substrate 1 and the other is the film substrate 31 is the same as the VA liquid crystal display elements of the first and second embodiments. . In the third embodiment, the electrode layer 2 for IPS operation is formed on the glass substrate 1 side, and no electrode layer is formed on the film substrate 31 side.

  The film substrate 31 also serves as a polarizing plate and is paired with the polarizing plate 5 disposed outside the glass substrate 1. The film substrate 31 is a polarizing film having a thickness of about 250 μm formed of, for example, polyvinyl alcohol (PVA). An alignment film 3 is formed on the electrode layer 2 of the glass substrate 1. An alignment film is not formed on the film substrate 31.

  Also in the method of manufacturing the liquid crystal display element of the third embodiment, as a method of forming an empty cell structure by arranging a film substrate on a glass substrate and curing a thermosetting sealing material, the first and second embodiments are used. The method can be applied. If annealing is performed on the PVA film substrate, for example, heat treatment at about 70 ° C. for about 2 to 3 minutes would be preferable.

  Next, with reference to FIG. 5A-FIG. 5C, the manufacturing method of the liquid crystal display element by 4th Example is demonstrated. FIG. 5A to FIG. 5C are schematic perspective views showing main steps of a method for manufacturing a liquid crystal display device according to the fourth embodiment.

  In the first and second embodiments, the multi-cavity of the liquid crystal cell was performed. As will be described below, the liquid crystal cell can be chamfered.

  Refer to FIG. 5A. In the fourth embodiment, a glass substrate 1 having a size corresponding to one liquid crystal cell is prepared. However, the glass substrate 1 has a UV curable adhesive forming region 1a on both sides outside the region to be an actual liquid crystal cell. In the same manner as in the first embodiment, a thermosetting sealing material 21 is formed on the glass substrate 1 on which the alignment film is formed and the rubbing process is performed.

  Refer to FIG. 5B. The film member 11b is aligned on the glass substrate 1 on which the sealing material 21 is formed. The film member 11b includes a film substrate portion 11 and a dummy film substrate portion 11a. The dummy film substrate portion 11a is arranged on the external extraction electrode terminal arrangement portion 25 which is a portion where the glass substrate 1 is larger than the film substrate 11 when the liquid crystal cell is formed. The dummy film substrate portion 11a is hatched.

  The film substrate portion 11 and the dummy film substrate portion 11a may be completely separated as in the first embodiment, or may be partially separated by a half cut or the like as in the second embodiment. Good.

  An ultraviolet curable adhesive 23 is formed on the region 1 a of the glass substrate 1. As in the first embodiment, the hot press substrate 24 is superposed on the glass substrate 1. Thereafter, as in the first embodiment, the ultraviolet curable adhesive 23 is cured, the hot press substrate 24 is fixed to the glass substrate 1, and the thermosetting sealing material 21 is cured by hot pressing to form a film on the glass substrate 1. The substrate 11 is bonded.

  Refer to FIG. 5C. After the thermosetting sealing material 21 is cured, the hot press substrate 24 is removed, and the dummy film substrate 11a is removed. Furthermore, the glass substrate 1 is scribed so as to remove the region 1 a prepared for the formation of the ultraviolet curable adhesive 23, thereby completing the empty cell.

  Thereafter, as in the first embodiment, liquid crystal is injected to complete the liquid crystal cell. In this way, the liquid crystal display element according to the fourth embodiment is formed. Even in the case where the liquid crystal cell is chamfered as in the fourth embodiment, the glass substrate is prevented from cracking by the dummy film substrate arrangement as described in the first embodiment and the second embodiment, and the substrate for hot press is used. It is possible to temporarily fix the film substrate by fixing.

  As described above with reference to the first to fourth embodiments, when a glass substrate and a film substrate are opposed to each other and a seal is formed by a thermosetting sealing material, a dummy film substrate is disposed outside the film substrate. By carrying out hot pressing, it is possible to suppress cracking of the glass substrate.

  The trouble of aligning the film substrate portion and the dummy film substrate portion separately by preparing an integral film member with a partial separation structure formed between the film substrate portion and the dummy film substrate portion. In addition, the dummy film substrate portion can be easily removed after the sealing material is cured.

  By fixing the glass substrate and the substrate for hot pressing with a photocurable adhesive and performing the heat pressing with the film substrate sandwiched between them temporarily fixed, it is possible to suppress the positional deviation of the film substrate. .

  For example, by using a sealing material that can be baked at a low temperature of 70 ° C. or lower, or by preliminarily shrinking (curling) the film substrate by heat treatment, the curvature that occurs after the film substrate is bonded to the glass substrate Can be reduced.

  In addition, although the liquid crystal display element was produced in the 1st-4th Example, the above-mentioned technique makes not only a liquid crystal display element but a glass substrate and a film substrate face each other, and forms a seal with a thermosetting sealing material. Thus, the present invention can be widely applied to the production of a sealing element in which an empty cell structure is formed and a working fluid such as liquid crystal is injected into the empty cell and sealed.

  Examples of the liquid crystal element other than the display element include a liquid crystal optical element that performs light deflection by a prism layer. Moreover, as sealing elements other than a liquid crystal element, an electrochromic element, an organic light emitting element, an electrophoretic element etc. are mentioned, for example.

  In addition, examples of the flexible plastic film substrate material include polyethylene terephthalate (PET) and acrylic resin in addition to the above-described polycarbonate and PVA.

  Although the present invention has been described with reference to the embodiments, the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications, improvements, combinations, and the like can be made.

DESCRIPTION OF SYMBOLS 1 Glass substrate 2, 12 Electrode layer 3, 13 Orientation film 4 Liquid crystal layer 5, 15 Polarizing plate 11 Film substrate 11a Dummy film substrate 11b Film member 21 Thermosetting sealing material 22 Liquid crystal cell formation area 23 Photocurable adhesive 24 Heat Substrate 25 for press External electrode terminal arrangement part 26 Half cut 31 Film substrate 1a Adhesive formation area of glass substrate

Claims (7)

Including a cell forming region and an outer region of the cell forming region, and preparing a glass substrate having a thermosetting sealing material formed on the cell forming region;
Whether the film substrate portion includes a film substrate portion disposed on the cell formation region and a dummy film substrate portion disposed outside the film substrate portion, and the film substrate portion is completely separated from the dummy film substrate portion. Or a step of disposing a partially separated film member on the glass substrate;
Curing the thermosetting sealing material by hot pressing to form an empty cell having a structure in which the glass substrate and the film substrate portion face each other;
And a step of removing the dummy film substrate portion from the glass substrate.   The method for manufacturing a sealing element according to claim 1, wherein the film substrate portion is partially separated from the dummy film substrate portion. Furthermore, it has a step of forming a photocurable adhesive on the outer region of the glass substrate,
The step of disposing the film member on the glass substrate does not dispose the dummy film substrate in the formation part of the photocurable adhesive,
Furthermore, it has the process of arrange | positioning the board | substrate for hot press on the said glass substrate on both sides of the said film member, hardening the said photocurable adhesive agent, and fixing the said board | substrate for hot press on the said glass substrate. ,
The method for manufacturing a sealing element according to claim 1, wherein the step of curing the thermosetting sealing material by the hot pressing is performed in a state where the hot pressing substrate is fixed on the glass substrate.   The said thermosetting sealing material is a thermosetting sealing material which can be hardened | cured at 70 degrees C or less, The manufacturing method of the sealing element of any one of Claims 1-3.   Furthermore, the manufacturing method of the sealing element of any one of Claims 1-4 which has the process of heat-processing the said film member before the process of arrange | positioning the said film member on the said glass substrate. And a step of injecting liquid crystal into the empty cell,
The said sealing element is a liquid crystal element, The manufacturing method of the sealing element of any one of Claims 1-5.   The method for manufacturing a sealing element according to claim 1, wherein the film substrate portion includes a polarizing film.

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