WO2011125671A1 - 液晶表示素子及びその製造方法、ならびに液晶表示装置 - Google Patents
液晶表示素子及びその製造方法、ならびに液晶表示装置 Download PDFInfo
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- WO2011125671A1 WO2011125671A1 PCT/JP2011/057882 JP2011057882W WO2011125671A1 WO 2011125671 A1 WO2011125671 A1 WO 2011125671A1 JP 2011057882 W JP2011057882 W JP 2011057882W WO 2011125671 A1 WO2011125671 A1 WO 2011125671A1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133305—Flexible substrates, e.g. plastics, organic film
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13398—Spacer materials; Spacer properties
Definitions
- the present invention relates to a liquid crystal display element using a flexible substrate, a manufacturing method thereof, and a liquid crystal display device.
- a liquid crystal panel is a liquid crystal panel (LCD) between a back substrate including a thin film transistor (TFT), a pixel electrode, and an alignment film, and a front substrate including a color filter, an electrode, an alignment film, and the like. It is configured to enclose.
- TFT thin film transistor
- a pixel electrode a pixel electrode
- an alignment film a front substrate including a color filter, an electrode, an alignment film, and the like. It is configured to enclose.
- TFT thin film transistor
- a pixel electrode a pixel electrode
- an alignment film and the like. It is configured to enclose.
- a front substrate including a color filter, an electrode, an alignment film, and the like. It is configured to enclose.
- a roll-to-roll method has attracted attention from the viewpoint of improving manufacturing efficiency.
- a liquid crystal dropping method from the formation of a seal for encapsulating liquid crystal to the bonding of the back substrate and the front substrate to cure the seal is performed as a series of continuous processes. ODF method) is adopted.
- the amount of liquid crystal supplied by the ODF method is required to be an amount that matches the volume of the liquid crystal layer to be formed.
- the volume of the liquid crystal layer changes depending on factors such as the area of the liquid crystal sealing region defined by the seal and the total volume of the spacer, and it is difficult to determine an appropriate amount of liquid crystal to be supplied.
- the cell gap may change due to excess liquid crystal, and the predetermined performance may not be obtained.
- the cell gap easily changes in proportion to the amount of liquid crystal supplied.
- Patent Document 2 discloses a method for manufacturing a liquid crystal display panel that reduces the non-uniformity of the panel thickness in the display area. Specifically, a sealing member that divides the non-peripheral region into a display region and a buffer region is provided between a pair of substrates. The liquid crystal supplied excessively to the display area flows into the buffer area through the cracks in the sealing member.
- Japanese Patent Publication Japanese Patent Laid-Open No. 2001-075111” (published on March 23, 2001) Japanese Patent Publication “Japanese Unexamined Patent Application Publication No. 2004-78142 (published on March 11, 2004)”
- the present invention has been made in view of the above problems, and an object of the present invention is to provide a liquid crystal display element capable of maintaining a good cell gap in-plane distribution even when a flexible substrate is used.
- a liquid crystal display element is disposed between a pair of substrates, at least one of which is flexible, a liquid crystal sandwiched between the pair of substrates, and the pair of substrates.
- a spacer having a height for maintaining the thickness of the liquid crystal in the gap between the pair of substrates, a seal formed in a shape surrounding the liquid crystal sealing region for sealing the liquid crystal between the pair of substrates, and the liquid crystal sealing
- the area is divided into a first area including a display area contributing to display and a second area outside thereof, and a bank member having a height that defines a gap between the pair of substrates is higher than the spacer, The bank member is bonded to one of the pair of substrates, and is not bonded and is in close contact with the other substrate.
- liquid crystal when encapsulating liquid crystal, a larger amount of liquid crystal than that necessary for the display area is supplied, and the pair of substrates is pressed in a direction perpendicular to the substrate surface to seal the liquid crystal.
- the bank member is bonded only to one of the pair of substrates before the liquid crystal is sealed. For this reason, when the pair of substrates are brought close to each other at the time of liquid crystal encapsulation, the liquid crystal supplied to the first region has a surplus amount of liquid crystal over the side of the bank member that is not bonded to the substrate and the second region. Flow into. As a result, only an appropriate amount of liquid crystal is left in the first region in order to form a cell gap defined by the height of the spacer in the display region. Subsequently, when the pair of substrates are superimposed, the bank member is brought into close contact with the non-bonded substrate by the pressure, and the seal seals the liquid crystal between the pair of substrates. Thereby, the amount of liquid crystal in the first region is kept stable.
- the in-plane distribution of the cell gap can be kept good in the display region.
- the bank member functions as a support column, so that the cell strength is improved.
- the thickness of the seal is equal to the cell gap.
- the bank member is thicker than the cell gap in the display area, so that the seal on the outer periphery can also be thicker than the cell gap.
- the seal thickness is thicker than usual (more than the cell gap)
- the adhesive strength between the pair of substrates is improved, thereby improving the cell strength. Accordingly, it is possible to provide a liquid crystal display element having excellent mechanical characteristics.
- a liquid crystal display device includes the above-described liquid crystal display element.
- a method for manufacturing a liquid crystal display element includes a pair of substrates, at least one of which is flexible, a liquid crystal sealed between the pair of substrates, and the pair of substrates.
- a liquid crystal comprising: a spacer that is disposed and has a height that maintains the thickness of the liquid crystal between the pair of substrates; and a seal that is formed between the pair of substrates so as to surround a liquid crystal sealing region that encloses the liquid crystal.
- a bank adhesion step of placing a melted bank member higher than the spacer and starting hardening, and after the bank adhesion step, the liquid crystal is supplied to the display area, and the bank portion So they are crushed in the pair of substrates in the range higher than the spacer is characterized in that it comprises a liquid crystal filling step of superimposing the pair of substrates to each other.
- the bank member is bonded to one of the pair of substrates.
- the liquid crystal sealing step is performed in a state where the bank member is at least hardened.
- the bank member is at least hardened.
- an excessive amount of the liquid crystal supplied to the first region is not bonded to the other substrate of the bank member. Go over to the second area.
- only an appropriate amount of liquid crystal is left in the first region in order to form a cell gap defined by the height of the spacer in the display region. That is, the second region partitioned by the bank member taller than the spacer functions as a buffer for storing excess liquid crystal. For this reason, it is possible to reduce the influence of the amount of liquid crystal supplied on the cell gap.
- the bank member that has been cured is deformed so as to be crushed by the pair of substrates, and is brought into close contact with the other substrate that has not been bonded. Thereby, the amount of liquid crystal in the first region is kept stable. Note that the bank member that has been cured does not adhere to the other substrate even if it is in close contact with the other substrate. Further, the seal seals the liquid crystal between the pair of substrates by pressure applied to the pair of substrates.
- a method for manufacturing a liquid crystal display element according to the present invention includes a pair of substrates, at least one of which is flexible, a liquid crystal sealed between the pair of substrates, and the pair of substrates.
- a spacer that is disposed between the pair of substrates and has a height that holds the thickness of the liquid crystal between the pair of substrates, and a seal that is formed between the pair of substrates so as to surround the liquid crystal sealing region that encloses the liquid crystal.
- a liquid crystal display element comprising: a first region including a display region contributing to display and a second region outside the liquid crystal sealing region in one of the pair of substrates.
- the pair of the pair Including a liquid crystal enclosing step of overlapping the plates and a heating step of plastically deforming the bank member so that the bank member is crushed by the pair of substrates in a range higher than the spacer after the liquid crystal enclosing step. It is characterized by that.
- a spacer having a height; a seal formed in a shape surrounding the liquid crystal enclosing region for enclosing the liquid crystal between the pair of substrates; and a first region including a display region contributing to display of the liquid crystal enclosing region;
- a bank member that is divided into an outer second region and that defines a gap between the pair of substrates that is higher than the spacer, and the bank member is one of the pair of substrates. Is adhered to the other substrate and is not adhered and is in close contact with the other substrate. Thereby, it is possible to provide a liquid crystal display element in which the in-plane distribution of the cell gap is kept good.
- FIG. 1 is a cross-sectional view showing a liquid crystal display element 10 of the present embodiment
- FIG. 2 is a top view thereof
- 1 is a cross-sectional view taken along line AA of the liquid crystal display element 10 shown in FIG.
- FIG. 1 and FIG. 2 show only main components of the liquid crystal display element 10. Further, in FIG. 1, for the sake of explanation, an interval (cell gap) between a pair of substrates 1 and members between them are exaggerated.
- the liquid crystal display element 10 includes a front substrate 1 a and a rear substrate 1 b constituting a pair of substrates 1, a liquid crystal 3 sealed between the pair of substrates 1, and a liquid crystal 3 sealed And a spacer 4 that maintains the thickness of the liquid crystal 3 between the pair of substrates 1 and a bank member 5 that divides a region in which the liquid crystal 3 is sealed (liquid crystal sealing region).
- At least one of the front substrate 1a and the rear substrate 1b is a flexible substrate.
- the material of the front substrate 1a and the back substrate 1b is not particularly limited as long as it is substantially transparent, and glass, ceramics, plastics, and the like can be used.
- Plastic substrates include cellulose derivatives such as cellulose, triacetyl cellulose, and diacetyl cellulose, polycycloolefin derivatives, polyesters such as polyethylene terephthalate, and polyethylene naphthalate, polypropylene, and Polyolefins such as polyethylene, polycarbonate, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyamide, polyimide, polyimide amide, polystyrene, polyacrylate, polymethyl methacrylate, polyether sulfone, polyarylate, and glass Inorganic-organic composite materials such as fiber-epoxy resin and glass fiber-acrylic resin can be used.
- a transparent electrode (ITO film) is formed on surfaces of the front substrate 1a and the rear substrate 1b constituting the pair of substrates 1 facing each other (hereinafter referred to as inner surfaces). For each region divided by the transparent electrode, a pixel as a minimum unit for image display is formed.
- conductive wiring, switching elements, insulating films, and the like may be appropriately formed on the inner surfaces of the pair of substrates 1 according to the driving method of the liquid crystal display element 10.
- this embodiment is not limited to the drive system of the liquid crystal display element 10, what employ
- an alignment film subjected to alignment treatment may be formed on the interface between the pair of substrates 1 and the liquid crystal 3 as necessary.
- the liquid crystal 3 is formed between a pair of substrates 1 and is sealed from the outside by a seal 2.
- the liquid crystal 3 can be a known liquid crystal layer, and is not particularly limited.
- the seal 2 is formed in a shape surrounding a liquid crystal sealing region for sealing the liquid crystal 3, and is a member for bonding the pair of substrates 1 and sealing the liquid crystal 3.
- the spacer 4 is disposed between the pair of substrates 1 and has a height that maintains the thickness of the liquid crystal 3 between the pair of substrates 1.
- the shape of the spacer 4 is not particularly limited.
- the spacer 4 may be formed in a columnar shape or a spherical shape using a resin or the like as a material.
- the bank member 5 is disposed between the pair of substrates 1 and divides the liquid crystal sealed area in which the liquid crystal 3 is sealed into a first area including a display area contributing to display and a second area outside the first area.
- the bank member 5 is bonded to one of the pair of substrates 1 (here, the back substrate 1b), and is non-adhered and closely adhered to the other substrate (here, the front substrate 1a). ing. That is, the bank member 5 forms an adhesive interface with the back substrate 1b and forms a non-adhesive interface with the front substrate 1a.
- bank member 5 is adhered to each of the pair of substrates 1 or is non-adhered and in close contact can be determined by, for example, disassembling the liquid crystal display element 10.
- the bank member 5 preferably divides the first region and the second region into respective airtight states.
- the first region is surrounded by the bank member 5, and the second region is surrounded by the bank member 5 and the seal 2, so that the airtight state of each region is maintained.
- the height of the bank member 5 is higher than the height of the spacer 4.
- the bank member 5, together with the seal 2 preferably defines the thickness so that the thickness of the cell gap in the second region is larger than the height of the spacer 4.
- “height” means a length in a direction defining a cell gap between the pair of substrates 1.
- a region having a cell gap defined by the height of the spacer 4 without being affected by the height of the bank member 5 in the first region can be a display region.
- the bank member 5 and the seal 2 can each be composed of a sealing material.
- a method of selecting an additive mixed with the seal material that is larger than the height of the spacer 4, or by increasing the viscosity and elasticity of the seal material There is a method of adjusting the ease of crushing.
- the sealant is not particularly limited, and is epoxy or acrylic photocuring, thermosetting, or photothermal curing.
- a curable resin composition in which a polymerization initiator is added to a curable resin can be used.
- fillers made of inorganic or organic substances may be used in order to control moisture permeability, elastic modulus, viscosity, and the like.
- the shape of these fillers is not particularly limited, and examples thereof include a spherical shape, a fibrous shape, and an amorphous shape that are larger than the height of the spacer 4.
- a spherical or fibrous gap material having a monodispersed diameter larger than the height of the spacer 4 may be used.
- the sealing material is applied using a dispenser or a screen printing method in the method of adjusting the ease of crushing the sealing material by increasing the viscosity and elasticity of the sealing material, an excessive increase in viscosity and elasticity is not preferable. Therefore, it is preferable to adopt a method of increasing the viscosity and elasticity after applying the sealing material.
- a method of increasing the viscosity and elasticity of the applied sealing material for example, there is a method of controlling the viscosity and the elastic modulus to a desired range by using a light delayed curable sealing material and adjusting the amount of light irradiation energy. .
- Examples of the light delayed curable sealing material include a composition containing a photocationically polymerizable compound as shown below.
- the photocationically polymerizable compound may be any compound having at least one photocationically polymerizable functional group in the molecule.
- Examples of the polymerizable functional group include an epoxy group, an oxetane group, a hydroxyl group, a vinyl ether group, Examples include an episulfide group and an ethyleneimine group.
- epoxy group-containing compound examples include bisphenol type epoxy resins such as bisphenol A type epoxy resins and bisphenol F type epoxy resins, phenol novolac type epoxy resins, cresol novolac type epoxy resins, glycidyl ether type epoxy resins, and glycidyl amine type epoxy resins. And bifunctional or higher functional epoxy resins.
- bisphenol type epoxy resins such as bisphenol A type epoxy resins and bisphenol F type epoxy resins
- phenol novolac type epoxy resins phenol novolac type epoxy resins
- cresol novolac type epoxy resins cresol novolac type epoxy resins
- glycidyl ether type epoxy resins examples of the epoxy group-containing compound
- glycidyl amine type epoxy resins examples of the epoxy group-containing compound.
- bifunctional or higher functional epoxy resins examples of the epoxy group-containing compound.
- the photocationic polymerization initiator used for the sealing material may be an ionic photoacid generation type or a nonionic photoacid generation type.
- ionic photoacid-generating photocationic polymerization initiators include onium salts such as aromatic diazonium salts, aromatic halonium salts, aromatic sulfonium salts, iron-allene complexes, titanocene complexes, and arylsilanol-aluminums. And organometallic complexes such as complexes.
- These cationic photopolymerization initiators may be used alone or in combination of two or more.
- nonionic photoacid generation type photocationic polymerization initiators include, for example, nitrobenzyl ester, sulfonic acid derivative, phosphoric acid ester, phenolsulfonic acid ester, diazonaphthoquinone, and N-hydroxyimidosulfonate. It is done.
- the amount of the cationic photopolymerization initiator is 0.1 to 30 parts by weight, preferably 0.3 to 10 parts by weight with respect to 100 parts by weight of the cationic photopolymerizable compound.
- the curing control agent is a compound having an ether bond.
- the amount of the curing control agent is 0.1 to 30 parts by weight, preferably 0.5 to 20 parts by weight with respect to 100 parts by weight of the photocationically polymerizable compound.
- the curing controller is not particularly limited as long as it is a compound having an ether bond. Examples thereof include polyalkylene oxides such as polyethylene glycol, polypropylene glycol, and polyoxytetramethylene glycol, and crown ethers. These curing control agents may be used alone or in combination of two or more.
- Examples of the energy irradiation light source for controlling the viscosity and elastic modulus of the sealing material include microwaves, infrared rays, visible light, ultraviolet rays, X-rays, and ⁇ rays. Among these, ultraviolet rays are preferably used. .
- the irradiation wavelength that is preferably used is 200 to 500 nm.
- Examples of the light source for irradiating ultraviolet rays include appropriate light sources such as a high-pressure mercury lamp, an ultra-high pressure mercury lamp, a chemical lamp, and a xenon lamp. What is necessary is just to set light irradiation energy suitably with the target sealing material thickness.
- the liquid crystal display element 10 Since the liquid crystal display element 10 according to this embodiment has the above-described configuration, the liquid crystal display element 10 is manufactured so that only the amount of the liquid crystal 3 necessary for defining the display area is present in the first area. For this reason, in the liquid crystal display element 10, the in-plane distribution of the cell gap in the display region is kept stable.
- liquid crystal display element 10 if used, a liquid crystal display device with excellent display quality can be configured.
- a color filter is provided on the inner surface of the front substrate 1a, and a polarizing plate or the like is one or both of the front substrate 1a and the rear substrate 1b. It is affixed on the outer surface (surface opposite to the inner surface). Further, an illuminating device or a reflector that illuminates the liquid crystal display element 10 is assembled to the liquid crystal display element 10. Since these structures are the same as those of the conventional liquid crystal display device, the description thereof is omitted.
- FIGS. 3 and 4 are cross-sectional views for explaining a method for manufacturing the liquid crystal display element 10.
- the manufacturing method of the liquid crystal display element 10 includes, for example, a spacer forming step of forming the spacer 4 on at least one of the pair of substrates 1 and the seal 2 on at least one of the pair of substrates 1. At a position where the seal formation step to be formed and the liquid crystal encapsulated region on either one of the pair of substrates 1 are divided into a first region including a display region contributing to display and a second region outside thereof.
- the liquid crystal sealing method an ODF method or a vacuum injection method can be given.
- the vacuum injection method is not suitable for a process using a flexible substrate with little self-supporting property from the viewpoint of handling.
- the ODF method corresponds to a roll-to-roll method suitable for a flexible substrate. Therefore, in the following description, a case where the ODF method is used for the sealing step will be described, but the present invention is not limited to this.
- a plurality of spacers 4 are formed on at least one of the pair of substrates 1 (here, the front substrate 1a).
- the spacer 4 is preferably formed by a method capable of controlling the arrangement and density thereof. For example, it may be formed in a columnar shape by photolithography, or may be formed in a spherical shape by inkjet or the like.
- the seal 2 is formed on at least one of the pair of substrates 1 (here, the front substrate 1a).
- a liquid crystal sealing region is set.
- a photo-curing resin is used as the seal 2 and is formed by a drawing method using a dispenser or a screen printing method.
- a melted bank member 5 higher than the height of the spacer 4 is formed at a position where the liquid crystal sealing area is divided into the first area and the second area.
- the substrate is placed on one of the pair of substrates 1 (here, the rear substrate 1b).
- the sealing material before the light treatment is arranged on the back substrate 1b, the light whose irradiation amount is adjusted is irradiated, and this seal After the material is in a semi-cured state, the next liquid crystal sealing step is performed.
- thermosetting sealing material When a thermosetting sealing material is used as the material of the bank member 5, after the thermosetting sealing material before the heat treatment is disposed on the back substrate 1b, it is partially cured by heating and then the next liquid crystal. An encapsulation process is performed. In this case, the bank member 5 should just be hardened
- thermoplastic sealing material when used as the material of the bank member 5, the molten thermoplastic sealing material may be disposed on the back substrate 1b and cured.
- the bank member 5 is bonded only to the back substrate 1b arranged in a molten state.
- the height of the bank member 5 is set so as to be an appropriate range (a range higher than the height of the spacer 4) when crushed in the next liquid crystal sealing step.
- the pair of substrates 1 are overlapped from the inner side with the liquid crystal 3 supplied to the display area.
- the ODF method is used to supply the liquid crystal 3 to the display area.
- the amount of liquid crystal to be supplied is set based on the cell capacity, which is the product of the area of the liquid crystal sealing region in the front substrate 1a and the height of the spacer 4 formed on the front substrate 1a.
- the amount of liquid crystal set here is preferably larger than the capacity determined by the product of the area of the first region in the front substrate 1a and the height of the spacer 4.
- the pair of substrates 1 are overlapped so that the height is crushed within a range higher than the height of the spacer 4. Specifically, it can be performed as follows.
- the front substrate 1a and the back substrate 1b are adsorbed on a stage having a mechanism for adsorbing a substrate such as an electrostatic chuck, and the pair of substrates 1 are aligned with the alignment film of the front substrate 1a and the back substrate 1b. It arrange
- the pair of substrates 1 are brought close to each other until the seal 2 on the front substrate 1a and the back substrate 1b are in contact with each other.
- the system is filled with an inert gas, and the pressure is gradually returned to normal pressure while releasing the reduced pressure.
- the liquid crystal 3 supplied to the first region on the front substrate 1a an excessive amount of the liquid crystal 3 flows between the bank member 5 and the front substrate 1a into the second region. As a result, only the amount of the liquid crystal 3 for appropriately forming a cell gap in the display region is left in the first region.
- the front substrate 1a and the back substrate 1b are subjected to pressure by the atmospheric pressure, and the bank member 5 is crushed within an appropriate range (a range in which the height is higher than the height of the spacer 4).
- the material of the bank member 5 is a light delayed curable sealing material or a thermosetting sealing material, since the bank member 5 has started to be cured (partially cured), it is plastically deformed. It adheres to the front substrate 1a but does not adhere.
- the seal 2 bonds the pair of substrates 1 and seals the liquid crystal 3 between the pair of substrates 1 to form a liquid crystal layer. Thereafter, the seal 2 is cured by irradiating the seal 2 with ultraviolet rays in this state. As a result, both the seal 2 and the bank member 5 become elastic bodies, and the first region and the second region are held in an airtight state, respectively. For this reason, the amount of liquid crystal in the first region is stabilized.
- the bank member 5 When the bank member 5 is a thermoplastic sealing material, the bank member 5 is in a cured state in the liquid crystal sealing step and does not adhere to the front substrate 1a, and isotropic of the liquid crystal 3 performed after the liquid crystal sealing step. By a heating process such as processing, plastic deformation is caused and it is crushed within an appropriate range. Thereby, the bank member 5 adheres to the front substrate 1a.
- the amount of liquid crystal supplied has little effect on the thickness of the cell gap. For this reason, the liquid crystal display element 10 with a small standard deviation of the cell gap in-plane distribution and high display quality can be manufactured.
- an active matrix element array, a color filter, a transparent electrode, an alignment film, and the like are formed on the front substrate 1a and the rear substrate 1b.
- the method for forming these is the same as in the manufacturing process of a conventional liquid crystal display element. Since it is the same as the method, description is abbreviate
- the bank member divides the first region and the second region into airtight states.
- the amount of liquid crystal in the first region can be made more stable, and the in-plane distribution of the cell gap can be kept better.
- the present invention can be widely used as a liquid crystal display element using a flexible substrate.
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Abstract
Description
液晶表示素子10の概略的な構成について図1および図2を参照して以下に説明する。図1は、本実施形態の液晶表示素子10を示す断面図であり、図2は、その上面図である。なお、図1は、図2に示す液晶表示素子10のA‐A線矢視断面図である。
次に、実施形態に係る液晶表示素子10の製造方法について、図3および図4を参照して説明する。図3および図4は、液晶表示素子10の製造方法を説明するための断面図である。
以上のように、本発明に係る液晶表示素子は、上記土手部材は、上記第1領域と上記第2領域とを、それぞれ気密を保った状態に分割することが好ましい。
1a 前面基板
1b 背面基板
2 シール
3 液晶
4 スペーサー
5 土手部材
10 液晶表示素子
Claims (5)
- 少なくとも一方が可撓性を有する一対の基板と、
上記一対の基板間に封入された液晶と
上記一対の基板間に配置され、当該一対の基板間における液晶の厚みを保持する高さを有するスペーサーと、
上記一対の基板間に、上記液晶を封入する液晶封入領域を囲う形状で形成されたシールと、
上記液晶封入領域を、表示に寄与する表示領域を含む第1領域とその外側の第2領域とに分割し、上記一対の基板間の間隙を規定する高さが上記スペーサーよりも高い土手部材とを備え、
上記土手部材は、上記一対の基板のうちの一方の基板に対して接着されており、他方の基板に対して非接着かつ密着していることを特徴としている液晶表示素子。 - 上記土手部材は、上記第1領域と上記第2領域とを、それぞれ気密を保った状態に分割することを特徴としている請求項1に記載の液晶表示素子。
- 請求項1または2に記載の液晶表示素子を備えることを特徴とする液晶表示装置。
- 少なくとも一方が可撓性を有する一対の基板と、上記一対の基板間に封入された液晶と上記一対の基板間に配置され、当該一対の基板間における液晶の厚みを保持する高さを有するスペーサーと、上記一対の基板間に、上記液晶を封入する液晶封入領域を囲う形状で形成されたシールと、を備える液晶表示素子を製造する方法であって、
上記一対の基板のいずれか一方の基板における、上記液晶封入領域を表示に寄与する表示領域を含む第1領域とその外側の第2領域とに分割する位置に、上記スペーサーの高さよりも高い、溶融状態の土手部材を載せて硬化を開始させる土手接着工程と、
上記土手接着工程の後、上記表示領域に液晶が供給された状態で、上記土手部材が上記スペーサーよりも高い範囲で上記一対の基板に潰されるように、上記一対の基板同士を重ね合わせる液晶封入工程とを含むことを特徴とする液晶表示素子の製造方法。 - 少なくとも一方が可撓性を有する一対の基板と、上記一対の基板間に封入された液晶と上記一対の基板間に配置され、当該一対の基板間における液晶の厚みを保持する高さを有するスペーサーと、上記一対の基板間に、上記液晶を封入する液晶封入領域を囲う形状で形成されたシールと、を備える液晶表示素子を製造する方法であって、
上記一対の基板のいずれか一方の基板における、上記液晶封入領域を表示に寄与する表示領域を含む第1領域とその外側の第2領域とに分割する位置に、上記スペーサーの高さよりも高い、溶融状態の土手部材を載せて硬化させる土手接着工程と
上記土手接着工程の後、上記表示領域に液晶が供給された状態で、上記一対の基板同士を重ね合わせる液晶封入工程と、
上記液晶封入工程の後、上記土手部材が上記スペーサーよりも高い範囲で上記一対の基板に潰されるように、上記土手部材を塑性変形させる加熱工程とを含むことを特徴とする液晶表示素子の製造方法。
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CN201180015751.5A CN102822733B (zh) | 2010-03-31 | 2011-03-29 | 液晶显示元件及其制造方法、和液晶显示装置 |
US13/637,621 US20130027652A1 (en) | 2010-03-31 | 2011-03-29 | Liquid-crystal display element, manufacturing method therefor, and liquid-crystal display device |
EP11765571.2A EP2555047A4 (en) | 2010-03-31 | 2011-03-29 | Liquid crystal display element, production method therefor and liquid crystal display device |
JP2012509490A JP5281711B2 (ja) | 2010-03-31 | 2011-03-29 | 液晶表示素子及びその製造方法、ならびに液晶表示装置 |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102692765A (zh) * | 2012-04-02 | 2012-09-26 | 友达光电股份有限公司 | 显示装置 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011253176A (ja) * | 2010-05-07 | 2011-12-15 | Shin Etsu Chem Co Ltd | ペリクル用粘着剤 |
JP2014032315A (ja) * | 2012-08-03 | 2014-02-20 | Japan Display Inc | 液晶表示装置及びその製造方法 |
CN104570498B (zh) * | 2014-11-24 | 2017-10-13 | 深圳市华星光电技术有限公司 | 可挠曲液晶面板及其制作方法 |
US20160226015A1 (en) * | 2015-02-03 | 2016-08-04 | Microsoft Technology Licensing, Llc | Edge sealing for bendable device |
JP2017044714A (ja) * | 2015-08-24 | 2017-03-02 | 株式会社ジャパンディスプレイ | 表示装置 |
JP6820975B2 (ja) * | 2018-06-29 | 2021-01-27 | シャープ株式会社 | 液晶パネル、連成液晶パネル、及び液晶パネルの製造方法 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06138444A (ja) * | 1992-10-26 | 1994-05-20 | Matsushita Electric Ind Co Ltd | 液晶パネル及びその製造法 |
JPH11326922A (ja) * | 1998-05-14 | 1999-11-26 | Matsushita Electric Ind Co Ltd | 液晶表示パネルの製造方法 |
JP2001075111A (ja) | 1999-09-07 | 2001-03-23 | Fuji Xerox Co Ltd | 液晶素子製造方法 |
JP2004078142A (ja) | 2002-08-14 | 2004-03-11 | Hannstar Display Corp | Lcdパネル及びその製造方法 |
JP2005078003A (ja) * | 2003-09-03 | 2005-03-24 | Seiko Epson Corp | パネル構造体及び電気光学装置の製造方法。 |
JP2007101688A (ja) * | 2005-09-30 | 2007-04-19 | Toshiba Matsushita Display Technology Co Ltd | 液晶表示装置 |
JP2008203518A (ja) * | 2007-02-20 | 2008-09-04 | Toshiba Matsushita Display Technology Co Ltd | 表示素子の製造方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4640583A (en) * | 1983-07-22 | 1987-02-03 | Kabushiki Kaisha Seiko Epson | Display panel having an inner and an outer seal and process for the production thereof |
KR100595299B1 (ko) * | 2000-10-12 | 2006-07-03 | 엘지.필립스 엘시디 주식회사 | 액정패널 및 그의 제조방법 |
JP3789449B2 (ja) * | 2003-10-09 | 2006-06-21 | Nec液晶テクノロジー株式会社 | 液晶パネルの製造方法 |
CN2715192Y (zh) * | 2004-03-27 | 2005-08-03 | 鸿富锦精密工业(深圳)有限公司 | 液晶显示面板 |
JP2006178323A (ja) * | 2004-12-24 | 2006-07-06 | Sharp Corp | 液晶表示パネルの製造方法 |
TWI280442B (en) * | 2005-10-21 | 2007-05-01 | Au Optronics Corp | Liquid crystal display device |
CN101297233B (zh) * | 2006-01-17 | 2010-07-28 | 夏普株式会社 | 液晶显示装置 |
JP4455510B2 (ja) * | 2006-02-08 | 2010-04-21 | 株式会社 日立ディスプレイズ | 液晶表示パネルとその製造方法 |
JP2008026566A (ja) * | 2006-07-20 | 2008-02-07 | Sharp Corp | 液晶表示装置及びその製造方法 |
CN102209927A (zh) * | 2008-11-20 | 2011-10-05 | 夏普株式会社 | 液晶显示装置及其制造方法 |
-
2011
- 2011-03-29 US US13/637,621 patent/US20130027652A1/en not_active Abandoned
- 2011-03-29 CN CN201180015751.5A patent/CN102822733B/zh not_active Expired - Fee Related
- 2011-03-29 EP EP11765571.2A patent/EP2555047A4/en not_active Withdrawn
- 2011-03-29 WO PCT/JP2011/057882 patent/WO2011125671A1/ja active Application Filing
- 2011-03-29 JP JP2012509490A patent/JP5281711B2/ja not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06138444A (ja) * | 1992-10-26 | 1994-05-20 | Matsushita Electric Ind Co Ltd | 液晶パネル及びその製造法 |
JPH11326922A (ja) * | 1998-05-14 | 1999-11-26 | Matsushita Electric Ind Co Ltd | 液晶表示パネルの製造方法 |
JP2001075111A (ja) | 1999-09-07 | 2001-03-23 | Fuji Xerox Co Ltd | 液晶素子製造方法 |
JP2004078142A (ja) | 2002-08-14 | 2004-03-11 | Hannstar Display Corp | Lcdパネル及びその製造方法 |
JP2005078003A (ja) * | 2003-09-03 | 2005-03-24 | Seiko Epson Corp | パネル構造体及び電気光学装置の製造方法。 |
JP2007101688A (ja) * | 2005-09-30 | 2007-04-19 | Toshiba Matsushita Display Technology Co Ltd | 液晶表示装置 |
JP2008203518A (ja) * | 2007-02-20 | 2008-09-04 | Toshiba Matsushita Display Technology Co Ltd | 表示素子の製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2555047A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102692765A (zh) * | 2012-04-02 | 2012-09-26 | 友达光电股份有限公司 | 显示装置 |
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JP5281711B2 (ja) | 2013-09-04 |
CN102822733A (zh) | 2012-12-12 |
EP2555047A1 (en) | 2013-02-06 |
US20130027652A1 (en) | 2013-01-31 |
CN102822733B (zh) | 2015-07-15 |
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