JP2005250181A - Method for manufacturing liquid crystal display device, liquid crystal display device and transfer body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a liquid crystal display device with which spacers are certainly arranged on desired positions of a substrate for the liquid crystal display device, the liquid crystal display device and a transfer body. <P>SOLUTION: In the method for manufacturing the liquid crystal display device comprising a liquid crystal sealed in between two sheets of the substrates, the spacers are arranged on the transfer body which generates gas in the case it receives a stimulus, the substrate for the liquid crystal display device and the spacers on the transfer body are placed opposite to each other with a narrow gap in between, or are brought into contact with each other, and subsequently the transfer body is released from the spacers by imparting the stimulus to the transfer body so as to arrange the spacers on the substrate for the liquid crystal display device. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a method for manufacturing a liquid crystal display device, a liquid crystal display device, and a transfer body that can reliably arrange spacers at desired positions on a substrate for a liquid crystal display device.

Liquid crystal display devices are widely used in personal computers, portable electronic devices, and the like. For example, TFT (Thin-Film Transistor) type liquid crystal display devices are generally formed with color filters, transparent electrodes, alignment films, and the like. A liquid crystal is sealed in a substrate on which a thin film transistor is formed. Here, it is the spacer that regulates the distance between the two substrates and maintains the proper thickness of the liquid crystal layer.

In the conventional method for manufacturing a liquid crystal display device, the spacers are also arranged in the display portion of the liquid crystal display device in order to distribute the spacers randomly and uniformly on the substrate on which the transparent electrodes are formed. In such a case, since the spacer is generally made of synthetic resin, glass, or the like, if the spacer is arranged on the display portion, the spacer portion may cause light leakage due to the biasing action. In addition, the alignment of the liquid crystal is disturbed on the surface of the spacer, thereby causing light leakage and reducing the contrast. As described above, the decrease in contrast due to the spacers occurred in the same manner even in the case of the STN type liquid crystal display device.

In order to solve the above-described problem, a spacer may be disposed in a black matrix portion that is a light shielding film formed in the color filter. The black matrix is provided to improve the display contrast of the liquid crystal display device. In the case of a TFT type liquid crystal display device, it is provided so that elements do not malfunction due to external light. It is what.

In a liquid crystal display device, as a technique for disposing a spacer in a black matrix portion, that is, a portion other than the display pixel of the liquid crystal display device, Patent Document 1 discloses a method of holding a gate electrode and a drain electrode at the same potential when spacers are dispersed. Is disclosed. Further, Patent Document 2 discloses a method of applying a voltage to the wiring electrodes when the spacers are dispersed. Patent Document 3 applies a positive voltage to the wiring electrodes to charge the spacers negatively and dry the method. A method of spraying is disclosed.

These techniques use a substrate on which thin film transistors (TFTs) are formed together with wiring electrodes, and apply a voltage to the wiring electrodes to control the arrangement of the spacers. However, when a voltage for controlling the arrangement of spacers is applied to a substrate on which a thin film transistor is formed, the device is often destroyed by the voltage, resulting in a decrease in yield.

On the other hand, a solid electrode that is not patterned is formed on the substrate opposite to the substrate on which the thin film transistor is formed. Therefore, although the element is not destroyed by voltage, since the wiring electrode does not exist, the technique for applying a voltage to the wiring electrode as described above cannot be used.

On the other hand, in the STN type liquid crystal display device, Patent Document 4 discloses a liquid crystal in which spacer particles are charged to either positive or negative at the time of spacer dispersion, and a voltage having the same polarity as the spacer is applied to the transparent electrode of the glass substrate. A method for manufacturing a display device is disclosed. However, with this technique alone, stable spacer arrangement control is difficult.

Patent Document 5 discloses a method for manufacturing a liquid crystal display device in which spacers are arranged using a photoconductor and transferred by an electric force. However, this method makes it difficult to transfer the spacer with electrostatic force due to weakening of the charge on the spacer on the photoconductor or change with time, and the transfer can be performed stably and continuously. There are problems such as being unable to be made and spacers remaining on the photoconductor.

Patent Document 6 also discloses a method for manufacturing a liquid crystal display device in which spacers are electrostatically transferred, as described above. However, this method also has the same problem as described above because the spacer is transferred by electrostatic force.

On the other hand, Patent Document 7 discloses a method of disposing spacers on a substrate by an ink jet method in which droplets of a spacer dispersion liquid are ejected from nozzles of an ink jet apparatus and land on the substrate. This method can be said to be effective in that the spacer can be arranged in an arbitrary pattern at an arbitrary position without bringing a mask or the like into contact with the substrate as in the above-described method.

However, in such an ink jet method, in order to improve the resolution of the liquid crystal display device (narrow the spacer arrangement interval), if the landing interval of the spacer dispersion liquid droplets is narrowed, the spacer dispersion liquid droplets are separated from each other by the substrate. On the other hand, if the diameter of the nozzle of the inkjet head is reduced so that the spacer dispersion liquid droplets do not coalesce on the substrate, the amount of the spacer dispersion liquid droplets per droplet is reduced. However, the accuracy of the landing position of the droplets of the spacer dispersion liquid is deteriorated, so that there is a problem that the resolution of the liquid crystal display device cannot be increased.

JP-A-4-256925 JP-A-5-53121 JP-A-5-61052 JP-A-4-204417 Japanese Patent No. 2536457 JP-A-6-258647 JP-A-57-58124

An object of the present invention is to provide a manufacturing method of a liquid crystal display device, a liquid crystal display device, and a transfer body that can securely arrange a spacer at a desired position of a substrate for a liquid crystal display device.

The present invention is a method of manufacturing a liquid crystal display device in which liquid crystal is sealed between two substrates, wherein a spacer is disposed on a transfer body that generates gas by stimulation, and the substrate for liquid crystal display device and the transfer The spacer on the body is made to face or contact with a small gap, and then the transfer body is stimulated by peeling the transfer body from the spacer, and the spacer is used for a liquid crystal display device. It is a manufacturing method of the liquid crystal display device arrange | positioned on a board | substrate.
The present invention is described in detail below.

The method for manufacturing a liquid crystal display device according to the present invention is a method for manufacturing a liquid crystal display device in which liquid crystal is sealed between two substrates, and a spacer that keeps the gap between the two substrates constant is used for the liquid crystal display by a transfer body. This is applied when it is arranged on a substrate for an apparatus.

In the method for manufacturing a liquid crystal display device of the present invention, first, spacers are arranged on a transfer body that generates gas by stimulation.

The spacer is not particularly limited as long as it can be attached to a transfer body before giving a stimulus. For example, the spacer is made of a resin, made of an inorganic material, resin-based or inorganic base particles. And the like in which the coating layer is chemically bonded to the surface. Among these, those in which the coating layer is chemically bonded to the surface of the resin-based or inorganic base particles are preferable.
In such a spacer, since the coating layer is chemically bonded to the surface of the base material particles, the binding between the base material particles of the spacer and the coating layer can be strengthened, and these can be easily performed. It will not peel off. Further, for example, when the coating layer is made of a thermoplastic resin or the like, the surface of the spacer can be melted or softened by heating or the like, thereby exhibiting adhesiveness. The coating layer is not particularly limited as long as it is chemically bonded to the base material particles described later, but is preferably made of a graft polymer.
Further, it is also possible to use those in which coating fine particles sufficiently smaller than the base particles are chemically bonded to the surface of the base particles. Such a spacer, for example, is melted by heating and exhibits adhesiveness, so that it can be adhered to the transfer body and can be reliably transferred to a liquid crystal display substrate described later. . Further, the spacer may be a resin in which a pigment is dispersed, or a spacer provided with a light shielding property by a dye or the like.

When the spacer is disposed on the transfer body, the spacer is placed at a desired position on the liquid crystal display substrate by disposing the spacer at a position corresponding to a position where the spacer of the liquid crystal display substrate is desired to be disposed. It can be reliably arranged.
The method of arranging the spacers at such positions is not particularly limited. For example, a predetermined voltage is applied to the predetermined positions of the transfer body, and the charged spacers are dispersed to form a predetermined value by electrostatic force. And a method of arranging them at the positions.

When arranging the spacer on the transfer body, a conventionally used dry spraying machine or the like can be used. In the dry spraying method, compressed air or nitrogen is used as a medium, and spacers are sprayed onto the transfer body via a pipe. At this time, the spacer is stably charged by repeated contact with the piping wall. Further, the charging of the spacer can be adjusted by the piping material, the piping length, the pressure of the compressed air, and the like.

The shape of the transfer body is not particularly limited, and for example, the shape may be a flat plate shape or a roll shape. Further, the surface shape is not particularly limited, and may be smooth or uneven. When the above-mentioned transfer body is flat when a liquid crystal display substrate and a spacer, which will be described later, are opposed to or in contact with each other with a narrow gap, the transfer body and the liquid crystal display substrate are parallel to each other. The liquid crystal display substrate may be brought close to the surface of the spacer with a small gap therebetween or contacted, or in the case of a roll, the feed speed of the liquid crystal display substrate while rotating the roll In accordance with the rotation, the substrate for the liquid crystal display device may be opposed to the surface of the spacer with a narrow gap, or may be brought into contact therewith.

In the method for producing a liquid crystal display device of the present invention, it is preferable that the transfer body has a releasable substance containing a gas generating agent that generates a gas by stimulation on at least a surface on which the spacer is disposed. In the present specification, the releasable substance refers to a substance that does not have self-adhesiveness but has a property capable of relatively easily peeling an adherend having adhesiveness.
The stimulus for generating gas from the gas generating agent is not particularly limited, and examples thereof include light, heat, ultrasonic waves, impact, and the like.

Although it does not specifically limit as a gas generating agent which generate | occur | produces gas by the said irritation | stimulation, For example, an azo compound, an azide compound, etc. are used suitably.
Examples of the azo compound include 2,2′-azobis (N-cyclohexyl-2-methylpropionamide), 2,2′-azobis [N- (2-methylpropyl) -2-methylpropionamide], 2 , 2′-azobis (N-butyl-2-methylpropionamide), 2,2′-azobis [N- (2-methylethyl) -2-methylpropionamide], 2,2′-azobis (N-hexyl) -2-methylpropionamide), 2,2′-azobis (N-propyl-2-methylpropionamide), 2,2′-azobis (N-ethyl-2-methylpropionamide), 2,2′-azobis {2-methyl-N- [1,1-bis (hydroxymethyl) -2-hydroxyethyl] propionamide}, 2,2′-azobis {2-methyl-N- [2- (1-hydroxy) Butyl)] propionamide}, 2,2′-azobis [2-methyl-N- (2-hydroxyethyl) propionamide], 2,2′-azobis [N- (2-propenyl) -2-methylpropionamide ], 2,2′-azobis [2- (5-methyl-2-imidazolin-2-yl) propane] dihydrochloride, 2,2′-azobis [2- (2-imidazolin-2-yl) propane] Dihydrochloride, 2,2′-azobis [2- (2-imidazolin-2-yl) propane] disulfate dihydrolate, 2,2′-azobis [2- (3,4,5,6-tetra Hydropyrimidin-2-yl) propane] dihydrochloride, 2,2′-azobis {2- [1- (2-hydroxyethyl) -2-imidazolin-2-yl] propane} dihai Lochloride, 2,2′-azobis [2- (2-imidazolin-2-yl) propane], 2,2′-azobis (2-methylpropionamidine) dihydrochloride, 2,2′-azobis (2-amino) Propane) dihydrochloride, 2,2′-azobis [N- (2-carboxyacyl) -2-methyl-propionamidine], 2,2′-azobis {2- [N- (2-carboxyethyl) amidine] Propane}, 2,2′-azobis (2-methylpropionamidoxime), dimethyl 2,2′-azobis (2-methylpropionate), dimethyl 2,2′-azobisisobutyrate, 4,4 ′ -Azobis (4-cyancarbonic acid), 4,4'-azobis (4-cyanopentanoic acid), 2,2'-azobis (2,4,4-trimethyl) Rupentane) and the like.

Among them, 2,2′-azobis (N-cyclohexyl-2-methylpropionamide), 2,2′-azobis [N- (2-methylpropyl) -2-methylpropionamide], 2,2′-azobis (N-butyl-2-methylpropionamide), 2,2′-azobis [N- (2-methylethyl) -2-methylpropionamide], 2,2′-azobis (N-hexyl-2-methylpropion) Amide), 2,2′-azobis (N-propyl-2-methylpropionamide), 2,2′-azobis (N-ethyl-2-methylpropionamide) and the like represented by the following general formula (1) Azoamide compounds are preferred.

In formula (1), R ¹ and R ² each represent a lower alkyl group, and R ³ represents a saturated alkyl group having 2 or more carbon atoms. R ¹ and R ² may be the same or different.

Since the azoamide compound represented by the general formula (1) has a high thermal decomposition temperature, the releasable substance can be used at a high temperature and stably stored. These azo compounds generate nitrogen gas when stimulated by light, heat, or the like.

Examples of the azide compound include 3-azidomethyl-3-methyloxetane, terephthalazide, p-tert-butylbenzazide; and glycidyl azide polymer obtained by ring-opening polymerization of 3-azidomethyl-3-methyloxetane. Examples thereof include a polymer having an azide group. These azide compounds are decomposed by applying a stimulus by light of a specific wavelength, heat, ultrasonic waves, impact, etc., and generate nitrogen gas.

Among these gas generating agents, the azide compound is easily decomposed even by giving an impact and releases nitrogen gas, so that there is a problem that handling is difficult. Furthermore, once the decomposition starts, the azide compound causes a chain reaction and explosively releases nitrogen gas, which cannot be controlled. Therefore, the adherend may be damaged by the explosively generated nitrogen gas. There is also a problem. Due to such problems, the amount of the azide compound used is limited, but sufficient effects may not be obtained with the limited amount used.

On the other hand, unlike the azide compound, the azo compound is extremely easy to handle because it does not generate gas upon impact. In addition, since gas does not explode due to a chain reaction, the adherend is not damaged, and gas generation can be interrupted if light irradiation is interrupted. There is also an advantage that it is possible to control. Therefore, it is more preferable to use an azo compound as the gas generating agent.

The gas generating agent is preferably not present as particles. In addition, in this specification, that a gas generating agent does not exist as a particle means that a gas generating agent cannot be confirmed when the said mold release material is observed with an electron microscope. If the gas generating agent is present as particles in the release material, the light generation efficiency may be reduced due to light scattering at the particle interface when light is irradiated as a stimulus for generating gas. The surface smoothness may be deteriorated when the active substance is formed into a film.

In order to prevent the gas generating agent from being present as particles, normally, a gas generating agent that dissolves in the release material is selected, but a gas generating agent that does not dissolve in the release material is selected. For example, the gas generating agent is finely dispersed in the releasable substance by using, for example, a disperser or using a dispersing agent in combination. In order to finely disperse the gas generating agent in the releasable substance, the gas generating agent is preferably a fine particle, and if necessary, these fine particles may be, for example, a disperser or a kneading device. It is more preferable that the fine particles are made finer by using, for example. That is, it is more preferable to disperse the gas generating agent to a state in which the gas generating agent cannot be confirmed when the release material is observed with an electron microscope.

It is preferable that the release material has a gas generated from the gas generating agent released to the outside of the release material. As a result, when a stimulus such as light or heat is applied, the gas generated from the gas generating agent peels at least a part of the adhesion surface of the spacer from the releasable substance, so that the spacer can be easily peeled off from the transfer body. At this time, most of the gas generated from the gas generating agent is preferably released out of the release material. If most of the gas generated from the gas generating agent is not released to the outside of the releasable material, the releasable material is entirely foamed by the gas generated from the gas generating agent, and the spacer is released from the releasable material. The effect of floating from the contact surface cannot be sufficiently obtained, and the spacer may be deformed or broken when peeled off. That is, it is preferable that the releasable substance does not foam. As long as the spacer is not deformed, a part of the gas generated from the gas generating agent may be dissolved in the releasable substance or may be present as bubbles in the releasable substance. It doesn't matter.

The resin serving as the binder for the release material is not particularly limited as long as it contains a material having releasability, but a curable silicone resin is preferable because releasability is particularly good. Such a resin may be a type mainly composed of a curable silicone resin, or a modified silicone type obtained by graft polymerization with an organic resin such as a urethane resin, an epoxy resin, or an alkyd resin.
As the kind of the curable silicone resin, any of the curing reaction types such as an addition type, a condensation type, an ultraviolet curable type, an electron beam curable type, and a solventless type can be used.

Among the curable silicone resins that are commercially available, KS-723A / B, KS-774, KS-775, KS-778, KS-779H, KS-847H, manufactured by Shin-Etsu Chemical Co., Ltd. KS-856, X-62-2422, X-62-2461, X-62-5039, X-60-5040, DKQ3-202, DKQ3-203, DKQ3-204, DKQ3- from Dow Corning Asia 205, DKQ3-210, YSR-3022, TPR-6700, TPR-6720, TPR-6721, manufactured by Toshiba Silicone, SD7223, SD7226, SD7229, LTC750A manufactured by Toray Dow Corning Silicone. Further, a release control agent may be used in combination in order to adjust the releasability of the releasable substance.

In addition, as the resin serving as the binder for the release material, for example, an appropriate resin can be selected according to the properties of the spacer. For example, thermosetting silicone resin mainly composed of dimethylpolysiloxane, dimethylpolysiloxane containing fine silica powder, silicone resin modified to impart hydrophilicity (for example, X-62- manufactured by Shin-Etsu Chemical Co., Ltd.) 9022, KS-881, 883) and the like.
These resins may be used alone or in combination of two or more.

In the case where a gas generating agent that generates gas by light stimulation such as an azide compound or an azo compound is used as the gas generating agent, the releasable substance preferably further contains a photosensitizer. Since the photosensitizer has an effect of amplifying stimulation by light on the gas generating agent, gas can be released by irradiation with less light. In addition, since the gas can be emitted by light in a wider wavelength region, even if the spacer does not pass light having a wavelength that generates gas from an azide compound or azo compound, light is irradiated through the spacer. Gas can be generated, and the range of selection of the spacer is widened.
Although it does not specifically limit as said photosensitizer, For example, a thioxanthone sensitizer etc. are suitable.

Examples of the transfer body having the releasable substance include those in which the layer containing the releasable substance is formed only on one surface of the substrate, and the layer containing the releasable substance is the substrate. And a non-support sheet (self-supporting sheet) having no base material.

The transfer body preferably has a plurality of layers formed on at least one side. In this case, it is more preferable that the outermost layer is a layer containing the above releasable substance and the other layer is a layer not containing the above releasable substance. As a result, the gas generated from the gas generating agent is released only to the adhesion surface with the spacer, and is not released to the opposite side of the transfer body. Therefore, the spacer arranged on the transfer body is not It can be reliably peeled off.

In the transfer body, when the layer containing the releasable substance is in contact with the layer not containing the releasable substance, the layer containing the releasable substance and the releasable substance are not contained. The layer is preferably composed of a resin component having a composition different from that of the resin component constituting the layer containing the releasable substance. Thereby, it can prevent that the gas generating agent in the layer containing the said mold release substance transfers to the layer which does not contain another mold release substance.

When the transfer body has a base material, the base material is not particularly limited. However, when the stimulus for generating a gas from the gas generating agent in the releasable substance is a light stimulus, the light is transmitted or For example, polyolefins such as acrylic, polyethylene and polypropylene, polycarbonate, vinyl chloride, ABS, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), poly (1,4-cyclohexylene dimethyl terephthalate) A sheet made of a transparent resin such as polyester, nylon, urethane, polyimide, polymethylpentene, polyvinylidene chloride, etc., a sheet having a network structure, a sheet having holes, and the like. If the can be heated to high temperatures, Riesuteru, sheets made of a heat-resistant resin such as polyether nitrile, sheets reinforced embedded metal sheet mesh is preferably used.
These sheets may be stretched sheets, and are more preferably biaxially stretched sheets. Further, when the substrate is made of polyester, the polyester may be a homopolymer, a copolymer obtained by copolymerizing a small amount of the third component, or a mixture of these polyesters. . In addition, antioxidants, heat stabilizers, lubricants, dyes, pigments, and the like can be added to the polyester substrate as necessary.

The thickness of the substrate is not particularly limited as long as it is a thickness capable of forming a sheet and has sufficient rigidity and strength as a support as well as flexibility, but usually the lower limit is 9 μm, The upper limit is preferably 300 μm, the lower limit is 12 μm, and the upper limit is more preferably 188 μm.
Moreover, when high smoothness is calculated | required by the said base material, it is preferable that it is thicker than the layer containing a mold release substance.

The base material may be subjected to primer treatment.
The primer treatment is not particularly limited, and examples thereof include a treatment for applying a primer resin to the surface of the substrate, a treatment for applying a corona treatment to the surface of the substrate, and the like.
Furthermore, the surface of the substrate may be subjected to plasma treatment in advance, and a coating layer such as an adhesive layer or an antistatic layer may be provided by a coating stretching method (in-line coating method).

In the transfer body, a preferable lower limit of the average coating amount (after drying) of the entire layer containing the release material is 0.01 g / m ² , and a preferable upper limit is 2 g / m ² . If the coating amount (after drying) is less than 0.01 g / m ² , the coating property may be less stable and it may be difficult to obtain a uniform coating film, and the coating amount may be 2 g / m ^2. beyond m ^2, coating adhesion of the layer itself having releasability material, curing and the like may be reduced. A more preferable upper limit is 1.5 g / m ² .

The transfer body is formed, for example, by coating the layer containing the releasable substance by a conventionally known coating method such as bar coating, gravure coating, reverse gravure coating, die coating, doctor blade coating, etc. Can do. Of these, the bar coating method, the gravure coating method, and the reverse gravure coating method are preferable because the transfer body can be provided at low cost.

In the method for manufacturing a liquid crystal display device of the present invention, the substrate for the liquid crystal display device and the spacer on the transfer body are opposed to each other with a narrow gap or are brought into contact with each other. Here, “facing the substrate with a narrow gap” means that the transfer member is stimulated, and when the spacer is lifted from the transfer member, the spacer and the liquid crystal display substrate come into contact with each other to transfer the spacer. This means that a slight gap is provided between the spacer and the liquid crystal display substrate.

When the liquid crystal display substrate and the spacer are opposed to each other with a narrow gap or are brought into contact with each other, the spacer is aligned between the liquid crystal display substrate and the transfer body. Can be brought into contact with an arbitrary position on the substrate for liquid crystal display device, for example, the spacer can be opposed to or contacted with the black matrix portion of the substrate for liquid crystal display device with a narrow gap. It becomes.
When the spacer surface is made of a thermoplastic resin that is melted or softened by heating, the spacer can be attached to the liquid crystal display substrate by heating the liquid crystal display substrate.

Further, when the liquid crystal display device substrate and the spacer are brought into contact with each other, the transfer body or the liquid crystal display device substrate may be pressed with a certain amount of force. This is because the spacer can be brought into contact with the liquid crystal display substrate more reliably.

The substrate for a liquid crystal display device (also referred to as a liquid crystal display substrate) is not particularly limited, and examples thereof include a glass substrate and a resin substrate. Further, the shape such as a substrate shape or a film shape is not particularly limited. Therefore, even a common electrode substrate having a color filter may be an array substrate or a segment substrate facing it.

Furthermore, in the method for manufacturing a liquid crystal display device of the present invention, the spacer is peeled off from the transfer member by applying a stimulus to the transfer member, and the spacer is disposed on the substrate for the liquid crystal display device.

In the method for manufacturing a liquid crystal display device of the present invention, gas is generated by applying a stimulus to the transfer body, and the generated gas lifts the spacer from the transfer body. Therefore, the transfer body can be easily removed from the spacer. As a result, the spacer can be easily disposed on the liquid crystal display device substrate.
Such a transfer body used in the method for producing a liquid crystal display device of the present invention is also one aspect of the present invention.

In the method for manufacturing a liquid crystal display device according to the present invention, when the spacer is arranged on the transfer body, the arrangement position of the spacer on the substrate for the liquid crystal display device can be controlled. It can be reliably arranged at an arbitrary position on the display device substrate. Therefore, the spacer can be excluded from the pixel portion, and a liquid crystal display device with high contrast can be manufactured by any type of liquid crystal display device.

The liquid crystal display device manufactured by the method for manufacturing a liquid crystal display device according to the present invention has a high contrast because the spacer is excluded from the pixel portion because the spacer is accurately arranged on the black matrix portion or the like. Such a liquid crystal display device is also one aspect of the present invention.

ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of a liquid crystal display device, a liquid crystal display device, and a transfer body which can arrange | position a spacer reliably in the desired position of the board | substrate for liquid crystal display devices can be provided.

Hereinafter, the present invention will be described in more detail with reference to examples. However, the present invention is not limited to these examples.

(Example 1)
First, a 20 μm × 270 μm rectangular etching region as shown in FIG. 1 is formed at a 300 μm pitch on a glass substrate on which ITO is formed as a transfer body by photolithography using ITO. Methyl ethyl ketone (100 parts by weight of polysiloxane-based silicone resin (manufactured by Shin-Etsu Chemical Co., Ltd., KS-717) and 100 parts by weight of 2,2′-azobis- (N-butyl-2-methylpropionamide) A MEK) solution was applied with a bar coater and heated to 60 ° C. to prepare a release agent layer having a thickness of 0.009 μm.

Micropearl AC (trade name, manufactured by Sekisui Chemical Co., Ltd., particle size: 4.7 μm) was used as the spacer, and DISPA-μR (trade name, manufactured by Nisshin Engineering Co., Ltd.) was used as the dry spray device for the spacer. . The spacer was set to be positively charged (+) when sprayed.
The transfer body was placed on a grounded stage in the sprayer.
Using a DC power source, +2.0 kV was applied to ITO, and in this state, spacers were dispersed.

Thereafter, using a super high pressure mercury lamp as the transfer body, irradiation with 365 nm ultraviolet light was performed with the illuminance adjusted so that the irradiation intensity on the transfer body was 40 mW / cm ² .
Next, the common conductor substrate was fixed, and the transfer body was peeled off. The transfer member could be easily peeled off from the spacer by the generated gas.
When the common electrode substrate on which the spacers were arranged was observed with an optical microscope, the spacers were arranged at the positions of the black matrix. In addition, a TFT type liquid crystal display device was manufactured by using the common electrode substrate on which the spacers were arranged, in the same process as in the prior art. This TFT type liquid crystal display device has a high contrast and good display characteristics because there is no spacer in the display pixel.

ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of a liquid crystal display device, a liquid crystal display device, and a transfer body which can arrange | position a spacer reliably in the desired position of the board | substrate for liquid crystal display devices can be provided.

In the manufacturing method of the liquid crystal display device of the present invention, as an example of the structure of the patterned conductor (electrode) in the transfer body, a conceptual diagram for explaining the case where the region where the conductor (electrode) does not exist is a rectangle or a cross It is. In FIG. 1, the upper diagram is a conceptual view of the transfer body when the region where the conductor (electrode) does not exist is a rectangle, and the central diagram shows the region where the conductor (electrode) does not exist. The transfer body in the case of a cross is a conceptual diagram as viewed from above, and the lower diagram is a conceptual diagram as viewed from the side of a substrate for a liquid crystal display device (color filter etc. omitted). Further, it is described that spacers are arranged in a region where no conductor (electrode) is present, and that the region where the conductor (electrode) does not exist in the transfer body and the black matrix (BM) in the liquid crystal display substrate are aligned. It is also a conceptual diagram for the purpose of explaining, and is a conceptual diagram for explaining that the pitch of the region where the conductor (electrode) does not exist in the transfer body and the pitch of the black matrix (BM) in the liquid crystal display device substrate are matched.

Claims (6)

A method of manufacturing a liquid crystal display device in which liquid crystal is sealed between two substrates,
Place a spacer on the transfer body that generates gas by stimulation,
After the liquid crystal display substrate and the spacer on the transfer body are opposed to each other with a narrow gap, or after contact,
By giving a stimulus to the transfer body, the transfer body is peeled off from the spacer,
A method of manufacturing a liquid crystal display device, comprising disposing the spacer on a substrate for a liquid crystal display device. The transfer body has a releasable substance containing a gas generating agent that generates gas by stimulation on at least a surface on which the spacer is disposed, and the gas generated from the gas generating agent is released to the outside of the releasable substance. 2. The liquid crystal display device according to claim 1, wherein the release material does not foam and the gas generated from the gas generating agent peels at least a part of the spacer from the release material. Manufacturing method. The method for manufacturing a liquid crystal display device according to claim 1, wherein the gas generating agent does not exist as particles. 4. The method for manufacturing a liquid crystal display device according to claim 1, wherein the spacer is transferred only to the black matrix portion of the substrate for the liquid crystal display device. 5. A liquid crystal display device manufactured by the method for manufacturing a liquid crystal display device according to claim 1, 2, 3 or 4. A transfer body, characterized in that it is used in the method for producing a liquid crystal display device according to claim 1, 2, 3 or 4.

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