JP2013076743A - Display element and manufacturing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To implement a display element of high reliability in which high adhesion between substrates is secured and exfoliation of partitions for sealing up a display material are surely prevented by a relatively simple configuration to be able to surely seal up the display material by the partitions.SOLUTION: In manufacturing of a liquid crystal display element including a pair of flexible substrates 11 and 21, a liquid crystal layer 22, a first partition 13 provided around the liquid crystal layer 22, and a second partition 14 provided around the first partition 13 and having a spacing 14a, the liquid crystal layer 22, the first partition 13, and the second partition 14 are held between the flexible substrates 11 and 21, and the flexible substrates 11 and 21 are bonded to each other so that the liquid crystal layer 22 is sealed up between the flexible substrates 11 and 21 by the first partition 13.

Description

  The present invention relates to a display element and a manufacturing method thereof.

  As display materials, for example, display elements using liquid crystal are widely used around the world, including televisions and various monitors, but most of them sandwich liquid crystal between glass substrates on which transparent electrodes are formed. It is a device with a configuration. Among them, the development of display elements using flexible substrates such as resins, which are rich in flexibility, is underway. By applying a flexible substrate, there are advantages such as being bendable, light, thin, and not easily damaged even if dropped. Furthermore, the production of a display element using a flexible substrate can apply a so-called roll-to-roll manufacturing process, and can be performed in the atmosphere without using a large-scale and expensive manufacturing apparatus for bonding substrates in a vacuum. The substrates can be bonded relatively easily. Therefore, the display element can be manufactured continuously and is suitable for mass production.

JP-A-5-5890 JP-A-11-109368

  A display element using a flexible substrate can bend its display surface. For this reason, a force is applied to the end portion of the display element in the direction in which the flexible substrate is peeled off. Therefore, higher adhesion is required for bonding between the substrates than when a rigid substrate such as glass is used.

  In order to bond the flexible substrates by roll-to-roll, after aligning the flexible substrates in a state of facing each other while maintaining a predetermined gap, a pair of rollers is squeezed from the end of the substrate toward the center. The flexible substrate is pressed through the liquid crystal. In this case, by allowing a small amount of liquid crystal to overflow from the display area, the display area can be stably filled with the liquid crystal.

  In view of the above requirements, the adhesive member that seals the liquid crystal in the display region is formed in a double layer to ensure high adhesion between the substrates, and the inner adhesive member is filled with liquid crystal to adhere the inner member. It is conceivable that a small amount of liquid crystal overflows in the region between the member and the outer adhesive member.

  However, in this case, when the temperature of the display element rises, the air existing in the region between the inner sealing member and the outer sealing member expands, and the structure provided in the inner sealing member or the display region There is a concern of peeling. If this peeling occurs, the liquid crystal is contaminated or bubbles are generated in the liquid crystal, leading to serious display defects.

  The present invention has been made in view of the above-described problems, and ensures high adhesion between substrates and reliably prevents separation of partition walls for sealing display materials with a relatively simple configuration. An object of the present invention is to provide a display element with high reliability and a method for manufacturing the display element, which can surely seal the display material.

  One embodiment of the display element includes a flexible first substrate, a display material, a first partition provided around the display material, and a second partition provided around the first partition. Including a partition and a flexible second substrate, wherein the display material, the first partition, and the second partition are sandwiched between the first substrate and the second substrate, The display material is sealed by the first partition between the first substrate and the second substrate, and the second partition has a gap.

  One embodiment of a method for manufacturing a display element is provided with a flexible first substrate, a display material, a first partition provided around the display material, and a periphery of the first partition. In manufacturing a display element including a second partition wall having a gap and a flexible second substrate, the display material, the first partition wall, and the second partition wall are connected to the first substrate. The first substrate and the second substrate are sandwiched between the second substrate and the display material is sealed by the first partition between the first substrate and the second substrate. The substrate is pasted together.

  According to the above aspects, high adhesion between the substrates is ensured and separation of the partition walls for sealing the display material is reliably prevented with a relatively simple configuration, and the display material is reliably sealed by the partition walls. Thus, a highly reliable display element capable of achieving the above is realized.

It is a schematic plan view which shows the 1st flexible electrode substrate which is a component of the liquid crystal display element by 1st Embodiment. It is a schematic plan view which shows the 2nd flexible electrode substrate which is a component of the liquid crystal display element by 1st Embodiment. It is a schematic sectional drawing which shows typically a mode that both substrates are bonded using the manufacturing apparatus of a liquid crystal display element. It is a schematic diagram which shows the liquid crystal display element produced by this embodiment.

  Hereinafter, when applied to a liquid crystal display element using liquid crystal as a display material, the configuration of the liquid crystal display element will be described together with its manufacturing method. In addition to the liquid crystal display element, the display element can be applied to a display element in which a liquid or viscous liquid display material such as a composition liquid containing an electrochromic material as a display material is enclosed.

A first flexible electrode substrate, which is a component of the liquid crystal display element according to the present embodiment, is shown in FIG. 1, and a second flexible electrode substrate is shown in FIG.
The first flexible electrode substrate 11 and the second flexible electrode substrate 21 are respectively a predetermined electrode layer and another functional layer on a flexible substrate, that is, a flexible material (organic material or inorganic material). Is formed and configured. Furthermore, an element such as a TFT or TFD may be formed on the substrate together with the electrode layer.

  As the liquid crystal material, known liquid crystals such as a nematic liquid crystal, a ferroelectric liquid crystal, a blue phase liquid crystal, a cholesteric liquid crystal, and a polymer network liquid crystal can be used.

  Examples of the substrate material include polycarbonate, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyethersulfone (PES), polysulfone (PSF), ZEONOR (manufactured by ZEON CORPORATION), and ZEONEX (manufactured by ZEON CORPORATION). ), Cycloolefin resins typified by products such as Arton (manufactured by JSR) and the like can be used. Moreover, glass materials, such as quartz glass, soda glass, and borosilicate glass, can be used.

  The substrate needs to be bent during manufacture. A substrate made of a resin material has a Young's modulus of about 1 GPa to about 10 GPa, and is a material that is easily bent, so that even a relatively thick material can be used. The thickness of the substrate is preferably about 1.0 mm or less although it depends on the material. On the other hand, a substrate made of a glass material has a high Young's modulus of about 60 GPa to about 90 GPa, so that the thickness is preferably about 0.2 mm or less for use in this embodiment.

For example, the first flexible electrode substrate 11 is formed with a plurality of stripes in the vertical direction on the substrate, and the second flexible electrode substrate 21 is formed with a plurality of stripes in the horizontal direction on the substrate.
The electrode layer preferably has a high light transmittance. As a material used for the electrode layer, a known material can be used. For example, indium tin oxide (ITO) is representative, but other indium zinc oxide (IZO), Use an oxide-based transparent conductive film such as tin oxide, an electrode in which a metal such as silver in the form of elongated fibers is arranged in a network structure, a metal electrode such as aluminum or silicon, or a photoconductive resin such as polyaniline or porphyrin be able to.

  As a functional layer formed on the electrode layer, an insulating film and an alignment film for controlling the alignment of liquid crystal molecules are preferably coated. The insulating film has a function of preventing a short circuit between the opposing electrodes and improving the reliability of the display panel as a gas barrier layer. For the alignment film, organic films such as polyimide resin, polyamideimide resin, polyetherimide resin, polyvinyl butyral resin, and acrylic resin, and inorganic materials such as silicon oxide and aluminum oxide can be used.

  As shown in FIG. 1, on the surface of the first flexible electrode substrate 11, a structure body 12 provided in a display region in which liquid crystal is sealed, and a first partition wall provided around the structure body 12 are provided. 13 and a second partition wall 14 provided around the first partition wall 13.

  The structure 12 functions as a spacer that ensures the liquid crystal disposed in the display area of the first flexible electrode substrate 11 with a certain thickness. The shape of the structure body 12 can be formed in an arbitrary shape such as a dot shape, a line shape, a lattice shape, or the like that can ensure the liquid crystal with a uniform thickness. In this embodiment, the case where it forms in a grid | lattice form is illustrated.

  The first partition wall 13 is formed so as to surround the structure 12, and the first flexible electrode substrate 11, the second flexible electrode substrate 21, and the like are provided so as to securely seal and seal the liquid crystal in the display region. At the time of pasting, it is supposed that they are securely bonded so that they are not separated. The first partition wall 13 may be, for example, a single frame shape or a plurality of concentric frame shapes as long as the liquid crystal can be sealed. In this embodiment, the case where it forms in one frame shape is illustrated.

  In the present embodiment, the structure 12 and the first partition wall 13 are simultaneously formed using the same material, for example. Since the structure 12 and the first partition 13 have substantially the same thickness as the liquid crystal, the thickness is about 2 μm to about 10 μm, for example, about 5 μm. If the thickness is less than about 2 μm, the in-plane thickness variation is relatively large, which causes display unevenness. If it is thicker than about 10 μm, the driving voltage of the liquid crystal becomes high, which is inconvenient. Therefore, it is preferable that the thickness of the structural body 12 and the first partition wall 13 is about 2 μm to 10 μm. Further, the structure 12 and the first partition wall 13 are required to have the same thickness within the display region, and the variation in thickness varies depending on the liquid crystal driving method, the required display quality level, and the like. % Or less, and more preferably 2% or less.

As a material for the structural body 12 and the first partition wall 13, an acrylic resin or the like can be used. Furthermore, it is necessary to have adhesiveness after forming into a partition shape. Here, the adhesive strength is preferably 0.002 N / cm or more in terms of peel strength for T-type peeling defined by JISK6854-3.
In this embodiment, the case where a photoresist is used is illustrated. Specifically, a photoresist is applied to the surface of the first flexible electrode substrate 11 with a certain thickness by photolithography, and light irradiation, development, and the like are performed. Thereby, the structural body 12 and the first partition wall 13 are formed on the surface of the first flexible electrode substrate 11.

  The second partition wall 14 is formed as an adhesive that surrounds the periphery of the first partition wall 13 with a predetermined interval, and is formed in a shape having a gap. As the shape having a gap, for example, a broken line shape having a plurality of gaps, a plurality of dot shapes arranged so as to be separated by the gaps, and the like are preferable. In this embodiment, the case where the 2nd partition 14 is formed in the broken line shape which has the some gap | interval 14a is illustrated.

  The second partition wall 14, together with the first partition wall 13, securely bonds the first flexible electrode substrate 11 and the second flexible electrode substrate 21. A space 15 between the first partition wall 13 and the second partition wall 14 serves as a part for storing excess liquid crystal overflowing from the display area when the substrates described later are bonded to each other.

  The second partition wall 14 has a function of releasing the expanded gas (air) existing in the space 15 from the gap 14a due to the presence of the gap 14a. That is, if the second partition has a continuous shape without a gap, a sealed space is formed between the first partition and the second partition, and the temperature of the liquid crystal display element rises. In addition, the air in the space may expand, and the first partition and the like may be peeled off due to an increase in pressure. In the present embodiment, by providing the gap 14 a in the second partition wall 14, the expanded air in the space 15 can be released to the outside of the space 15, and peeling of the first partition wall and the like is prevented.

  Furthermore, the second partition wall 14 also has a function of improving the adhesion between the substrates due to the presence of the gap 14a. That is, if the second partition has a continuous shape without a gap, excess liquid crystal is applied to the bonding surface between the second partition and the substrate by the pressure applied when the electrode substrates 11 and 21 are bonded. Penetration becomes easy and adhesive strength decreases. In the present embodiment, by providing the gap 14 a in the second partition wall 14, it is possible to prevent the excessive liquid crystal from entering the bonding surface and to ensure the reliable bonding of both the electrode substrates 11 and 21.

  The second partition 14 is desirably formed thicker than the structure 12, the first partition 13, and the liquid crystal layer. In the present embodiment, the second partition wall 14 is formed to be thicker than the structure 12 and the first partition wall 13, for example, to a thickness of about 30 to 200 μm. In this case, when the two electrode substrates 11 and 21 are bonded, the second partition 14 comes into contact with the opposing second flexible electrode substrate 21 before the structure 12 and the first partition 13, and then pressed. As a result, the second partition wall 14 is deformed to substantially the same thickness as the structure 12, the first partition wall 13, and the like. By forming the second partition wall 14 thicker than the structure 12, the first partition wall 13 and the liquid crystal layer, the liquid crystal does not enter the contact surface between the second partition wall 14 and the second flexible electrode substrate 21. Therefore, high adhesive strength can be obtained, and excessive diffusion of liquid crystal can be suppressed.

  As a material for the second partition wall 14, a resin having excellent thermosetting or photo-curing adhesiveness can be used. Specific examples of resins that can be used include PS-210 (Mitsui Chemicals), TB3170B, TB3170D, TB3170F (Threebond), World Rock 789 (Kyoritsu Chemical), AC-A1590-VI-LV (Marubeni) Photo-curing adhesives such as Chemix, U1070, U1004 (Nippon Kayaku), Photorec A-704, Photorec A-782 (Sekisui Chemical Co., Ltd.).

  Since the second partition wall 14 does not directly touch the liquid crystal in the display area due to the presence of the first partition wall 13, unlike the surrounding sealing material of a normal liquid crystal display element, the second partition wall 14 is affected by contamination of the liquid crystal. Very few. For this reason, the freedom degree of selection of the material of the 2nd partition 14 is high. However, since the second partition wall 14 may come into contact with the liquid crystal protruding from the display region over the first partition wall 13 before curing, a material that can be sufficiently cured even if the liquid crystal is in contact is selected. . In addition, when there is a volatile component, there is a possibility that it will be mixed into the liquid crystal in the display area when the flexible substrate is bonded, so a material containing a volatile component is not preferable.

  The second partition 14 is formed on the first flexible electrode substrate 11 by a known method such as screen printing, gravure printing, dispenser drawing or the like. In the present embodiment, the case where the second partition wall 14 is formed on the first flexible electrode substrate 11 is illustrated, but it may be formed on the second flexible electrode substrate 21.

As shown in FIG. 2, a liquid crystal layer 22 is formed on the display area on the surface of the second flexible electrode substrate 21.
The liquid crystal layer 22 is formed by applying a predetermined liquid crystal on the display area of the second flexible electrode substrate 21. The liquid crystal layer can also be formed on the first flexible electrode.

  As the liquid crystal used for the liquid crystal layer 22, known liquid crystals such as a nematic liquid crystal, a ferroelectric liquid crystal, a blue phase liquid crystal, a cholesteric liquid crystal, and a polymer network liquid crystal can be used. A liquid crystal having a high viscosity may make it difficult to completely fill the concave portions of the resin structure at the time of bonding. Moreover, when dripping in many dot shape with a dispenser, a space | gap may remain. In such a case, it is necessary to slow down the running speed of the roller or squeegee when laminating to ensure the filling time. Alternatively, the viscosity of the liquid crystal may be reduced by heating. Here, the viscosity of the liquid crystal is preferably 300 mPa · s or less. This viscosity is the viscosity of the liquid crystal at the time of pasting, and when pasting while heating, it means the viscosity in a heated state.

  As a method for applying the liquid crystal on the flexible electrode substrate 2, known methods such as dispenser application, slit coater, die coater, flexographic printing, gravure printing, offset printing, bar coater, and screen printing can be used. Among these, dispenser coating, gravure printing, and gravure offset printing are convenient because it is easy to adjust the amount of liquid crystal and liquid does not easily accumulate at the edge portion of the coating region, so that excess liquid crystal is hardly generated. Here, it may be applied to the flexible electrode substrate 1, but when applying liquid crystal by gravure printing or gravure offset printing, it is performed on the substrate side on which the structure 12 is not formed. If performed on the surface on which the structure 12 is formed, problems such as difficulty in forming a uniform liquid crystal layer, difficulty in controlling the amount of liquid crystal, and damage to the structure 12 may occur. In the case of dispenser application, it may be applied on either flexible substrate.

  The liquid crystal used for the liquid crystal layer 22 is applied by adjusting the amount so that it is slightly larger than the volume of the inner space surrounded by the first partition wall 13 when the electrode substrates 11 and 21 are bonded together. When the volume is smaller than the volume of the inner space surrounded by the first partition wall 13, when the two electrode substrates 11 and 21 are bonded together, the liquid crystal is not completely filled in the display area and a gap is formed. The rest will cause display defects. In addition, if there are too many liquid crystals, not only the liquid crystals are wasted, but the liquids protrude out of the substrate and diffuse, thereby adhering to the surrounding manufacturing apparatus and the outer surface of the substrate and becoming dirty.

  The 1st flexible electrode substrate 11 and the flexible electrode substrate 21 which were comprised as mentioned above are bonded as follows. Although a roller or a squeegee is used for pasting, the case where a roller is used is illustrated in this embodiment.

FIG. 3 is a schematic cross-sectional view schematically showing a state in which both substrates are bonded using a liquid crystal display device manufacturing apparatus.
This manufacturing apparatus includes an adsorption plate 31, an adsorption box 32 having a mesh sheet 32a made of, for example, SUS on the surface, and a pressing roller 33 provided on the adsorption box 32 side.
The suction plate 31 is, for example, for suction-fixing the back surface of the second flexible electrode substrate 21. The adsorption box 32 is for adsorbing and fixing the back surface of the first flexible electrode substrate 11 on the mesh sheet 32a, for example. The roller 33 presses the surface of the first flexible electrode substrate 11 with the liquid crystal sandwiched between the surface of the second flexible electrode substrate 21.

  In this embodiment, bonding between flexible electrode substrates is performed in atmospheric pressure. The surface of the first flexible electrode substrate 11 and the second flexible electrode substrate 21 is maintained while maintaining a predetermined distance so that the structure 12 and the first and second partition walls 13 and 14 and the liquid crystal layer 22 do not contact each other. Align with each other facing each other. Thereafter, both electrode substrates 11 and 21 are pressed by rollers 33 from the substrate end toward the center. Or after making only the margin part of one side of a board | substrate contact and aligning a position, you may make it stick by the roller 33 similarly. In order to align the positions of the two electrode substrates 11 and 21, a mark for alignment is formed on the substrate surface, and a method of aligning using the marks and the outer position of both the substrates 11 and 12 are aligned. A method or the like may be used.

  When the two electrode substrates 11 and 21 are bonded from the end of one substrate, the liquid crystal pools in the space 15 between the first partition wall 13 and the third partition wall 14 between the electrode substrates 11 and 21. Can do. By holding the roller 33 and sliding the roller 33 to the other substrate edge, it is possible to bond bubbles while pushing out bubbles and minute foreign matters to the outside of the first partition wall 13. Can be realized. In order to completely fill the display area with the liquid crystal, it is preferable to bond a small amount of liquid crystal while overflowing the first partition wall 13. At this time, the liquid crystal application amount and the bonding conditions are adjusted so that the liquid overflowing to the outside of the partition wall 13 is diffused in the space 15.

  When bonding both the electrode substrates 11 and 21, at least one of the electrode substrates may be heated to make the liquid crystal a temperature environment higher than the surrounding environment. Specifically, first, the liquid crystal is heated at a temperature higher than room temperature (for example, 25 ° C.), for example, about 40 ° C. to 80 ° C., and both electrode substrates 11 and 21 are bonded together, and then cooled to room temperature. In this case, both electrode substrates 11 and 21 are bonded in a state where the volume of the liquid crystal is expanded, and after the bonding is completed, the liquid crystal contracts to the original volume by cooling to room temperature. Thereby, the opposing electrode substrates 11 and 21 are pressed from both sides by the atmospheric pressure, and both electrode substrates 11 and 21 can be reliably pressed to the distance of the thickness of the structure 12 and the first partition wall 13. Furthermore, this method can reduce the pressure when pressing with the roller 33 from the outside at the time of bonding, so that it is possible to reduce the distortion of both electrode substrates 11 and 21, and further, biting foreign matter. In this case, damage to both electrode substrates can be reduced.

  If the applied liquid crystal layer has uneven thickness within the display area, or if there is more liquid crystal than the thickness of the structure due to pressure unevenness during pressing, the structure and the flexible electrode substrate cannot be contacted or contacted. Is insufficient. In the present embodiment, by controlling the liquid crystal temperature, the external pressure is pressed by contraction of the liquid crystal, and the electrode substrates 11 and 12 can be bonded uniformly within the bonding surface. Furthermore, if the viscosity of the liquid crystal is high, the fluidity is low, and it takes a long time to fill the recesses of the structure 12, and the bonding speed may be slow. In such a case, the viscosity of the liquid crystal can be lowered by heating the liquid crystal as described above at the time of bonding, and the bonding can be stably performed.

4A and 4B are schematic views showing the manufactured liquid crystal display element, in which FIG. 4A is a schematic plan view showing both electrode substrates bonded together, and FIG. 4B is a schematic cross-sectional view.
The thickness of the liquid crystal is uniformly regulated by the thickness of the structure 12 between the electrode substrates 11 and 12, the display region is filled with liquid crystal, and the liquid crystal is hermetically sealed in the first partition wall 13 to form the liquid crystal layer 22. Has been. Excess liquid crystal remains in the space 15 between the first partition wall 13 and the second partition wall 14 surrounding the first partition wall 13. Due to the presence of the second partition wall 14 having the gap 14a, the first partition wall 13 and the like are not peeled off, and in combination with the first partition wall 13, there is no bubble due to the liquid crystal layer 22 in the display region. Liquid crystal sealing and liquid crystal contamination suppression, and reliable adhesion of the electrode substrates 11 and 12 can be obtained.

  As described above, according to the present embodiment, high adhesion between the electrode substrates 11 and 21 is ensured, and the first partition 13 and the like sealing the liquid crystal layer 22 are peeled off with a relatively simple configuration. Thus, a highly reliable liquid crystal display element that can be surely prevented by the second partition wall 14 and can surely seal the liquid crystal layer 22 by the first partition wall 13 is realized.

  Hereinafter, specific examples of the liquid crystal display device and the manufacturing method thereof according to the present embodiment will be described.

Example 1
On the surface of the first flexible electrode substrate made of polycarbonate having a thickness of 0.125 mm, striped electrodes are formed in the vertical direction, and a polyimide alignment film is formed thereon. Furthermore, after applying a negative photoresist on the polyimide alignment film, a lattice-shaped structure is surrounded in the central display area by continuous photolithography by pre-baking, exposure, development, and baking photolithography. A first partition having a different shape was produced. It was 4.75 micrometers when the thickness of the structure and the 1st partition was measured with the surface level | step difference meter.
Furthermore, on the first flexible electrode substrate, an ultraviolet curable resin (product name TB-3170F: manufactured by ThreeBond Co., Ltd.) is bonded in a broken line shape having a plurality of gaps so as to surround the outside of the first partition. The wall 5 was drawn. The length of the broken line portion was 7 mm, and the length of the gap between the line portions was 3 mm.

  On the other hand, on the surface of the second flexible electrode substrate made of polycarbonate having a thickness of 0.125 mm, striped electrodes are formed in the lateral direction, and a polyimide alignment film is formed thereon. Further, a cholesteric liquid crystal was applied in a rectangular shape to the display region on the polyimide alignment film by, for example, gravure printing. The viscosity of the liquid crystal was 60 mPa · s, and the total amount of liquid crystal at this time was 1.2 times the internal volume after bonding.

  The 1st flexible electrode substrate and the 2nd flexible electrode substrate were bonded using the manufacturing apparatus of FIG. The bonded two electrode substrates were irradiated with ultraviolet rays (UV) while shielding the structure at the central portion and the first partition and the inner region, thereby curing the second partition. The liquid crystal is filled inside the first partition and a small amount is also present in the space inside the second partition. Finally, heating was performed at 110 ° C. for 10 minutes to make the liquid crystal isotropic, and then cooled to room temperature to complete a liquid crystal display element.

  When this liquid crystal display element was left in an environment of 70 ° C. for 1000 hours, discoloration was seen in the liquid crystal outside the first partition, but there was no effect on the liquid crystal inside the first partition, and other appearances were also observed. There was no change. When driven by applying a voltage, no change from before heating was observed.

(Comparative Example 1)
In Example 1, a liquid crystal display device was produced in the same manner as in Example 1 except that the second partition walls were formed in a continuous linear shape and the inside was sealed. In this liquid crystal display element, the second partition wall and the second flexible electrode substrate were not sufficiently bonded, particularly in the vicinity of the substrate termination at the time of bonding. Therefore, the second partition wall was peeled off during heating, peeling was also caused in the structure in the display region and the first partition wall, and the liquid crystal was discolored to confirm display defects.

(Example 2)
In Example 1, the liquid crystal was dropped into a dot matrix using a dispenser, and the first flexible electrode substrate adsorption plate was heated to 70 ° C. for bonding when both electrode substrates were bonded. As a result, it was confirmed that the liquid crystal was filled in the display area without a gap.

(Comparative Example 2)
In Example 2, when both electrode substrates were bonded in a room temperature environment without heating the adsorption plate of the first flexible electrode substrate, a void without liquid crystal was seen in the display region. This is probably because the liquid crystal was sealed inside the first partition before the liquid crystal dots were united at the time of bonding, and air was trapped in the liquid crystal and could not escape.

  Hereinafter, various aspects of the display element and the manufacturing method thereof will be collectively described as supplementary notes.

(Appendix 1) a flexible first substrate;
Display materials,
A first partition provided around the display material;
A second partition provided around the first partition;
A flexible second substrate, and
The display material, the first partition and the second partition are sandwiched between the first substrate and the second substrate,
The display material is sealed by the first partition between the first substrate and the second substrate,
The display element, wherein the second partition has a gap.

  (Additional remark 2) The said 2nd partition is formed in the broken line shape which has the said some said gap, The display element of Additional remark 1 characterized by the above-mentioned.

  (Supplementary note 3) The display element according to supplementary note 1, wherein the second partition is formed in a plurality of dot shapes arranged so as to be separated by the gap.

  (Additional remark 4) Additional structure 1-3 provided in the display area where the said display material is arrange | positioned, and further becomes a spacer between the said 1st board | substrate and the said 2nd board | substrate. The display element according to any one of the above.

  (Supplementary note 5) The display element according to supplementary note 4, wherein the structure is made of the same material as the first partition.

(Appendix 6) a flexible first substrate;
Display materials,
A first partition provided around the display material;
A second partition having a gap provided around the first partition;
When manufacturing a display element including a flexible second substrate,
The display material, the first partition wall, and the second partition wall are sandwiched between the first substrate and the second substrate, and the display material is between the first substrate and the second substrate. The method for manufacturing a display element, wherein the first substrate and the second substrate are bonded to each other so as to be sealed by the first partition.

  (Additional remark 7) The said 2nd partition is formed in the broken line shape which has the said some said gap, The manufacturing method of the display element of Additional remark 6 characterized by the above-mentioned.

  (Supplementary note 8) The method for manufacturing a display element according to supplementary note 6, wherein the second partition is formed in a plurality of dot shapes arranged so as to be separated by the gap.

  (Additional remark 9) Said 1st board | substrate and said 2nd board | substrate are bonded together under temperature conditions higher than room temperature, Then, it cools to room temperature, The any one of Additional remark 6-8 characterized by the above-mentioned. A method for manufacturing a display element.

  (Additional remark 10) The said 1st board | substrate and the said 2nd board | substrate are bonded together using the structure provided in the display area | region where the said display material is distribute | arranged as a spacer. 9. A method for manufacturing a display element according to any one of items 8 to 9.

  (Additional remark 11) The said 2nd partition is a thing thicker than the said structure, The manufacturing method of the display element of Additional remark 10 characterized by the above-mentioned.

  (Additional remark 12) The said structure is formed with the same material as the said 1st partition, The manufacturing method of the display element of Additional remark 10 or 11 characterized by the above-mentioned.

11 first flexible electrode substrate 12 structure 13 first partition 14 second partition 14a gap 15 space 21 second flexible electrode substrate 22 liquid crystal layer 31 suction plate 32 suction box 32a mesh sheet 33 roller

Claims (10)

A flexible first substrate;
Display materials,
A first partition provided around the display material;
A second partition provided around the first partition;
A flexible second substrate, and
The display material, the first partition and the second partition are sandwiched between the first substrate and the second substrate,
The display material is sealed by the first partition between the first substrate and the second substrate,
The display element, wherein the second partition has a gap.   The display element according to claim 1, wherein the second partition is formed in a broken line shape having a plurality of the gaps.   The display element according to claim 1, wherein the second partition is formed in a plurality of dot shapes arranged so as to be separated by the gap.   4. The structure according to claim 1, further comprising a structure that is provided in a display region where the display material is disposed and serves as a spacer between the first substrate and the second substrate. Item 1. A display element according to item 1. A flexible first substrate;
Display materials,
A first partition provided around the display material;
A second partition having a gap provided around the first partition;
When manufacturing a display element including a flexible second substrate,
The display material, the first partition wall, and the second partition wall are sandwiched between the first substrate and the second substrate, and the display material is between the first substrate and the second substrate. The method for manufacturing a display element, wherein the first substrate and the second substrate are bonded to each other so as to be sealed by the first partition.   The method for manufacturing a display element according to claim 5, wherein the second partition is formed in a broken line shape having a plurality of the gaps.   6. The method of manufacturing a display element according to claim 5, wherein the second partition is formed in a plurality of dot shapes arranged so as to be separated by the gap.   The display element according to claim 5, wherein the first substrate and the second substrate are bonded to each other under a temperature condition higher than room temperature, and then cooled to room temperature. Production method.   The first substrate and the second substrate are bonded to each other using a structure provided in a display region where the display material is disposed as a spacer. A method for manufacturing a display element according to claim 1.   The method for manufacturing a display element according to claim 9, wherein the second partition wall is thicker than the structure.

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