JP2005250180A - 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, when the spacers to keep a gap between two sheets of the substrates constant are to be arranged on the substrate for the liquid crystal display device with the transfer body, the spacers comprising base material particles with coating layers chemically bonded to surfaces thereof are arranged on the transfer body, the spacers on the transfer body are brought into contact with the substrate for the liquid crystal display device, and subsequently the spacers are transferred from the transfer body side to the substrate for the liquid crystal display device side 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) liquid crystal display devices generally include color filters, transparent films as shown in FIG. Liquid crystal is sealed in a substrate on which an electrode, an alignment film, and the like are formed and 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, spacers are also arranged on the display portion of the liquid crystal display device as shown in FIG. 16 in order to distribute the spacers randomly and uniformly on the substrate on which the transparent electrodes are formed. It was. 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.

In addition, a solid electrode on which a pattern is not formed 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, and a spacer that keeps the gap between the two substrates constant is arranged on the substrate for the liquid crystal display device by a transfer member. In this case, the spacer having the coating layer chemically bonded to the surface of the base material particles is disposed on the transfer body, and the liquid crystal display substrate and the spacer on the transfer body are brought into contact with each other, and then the spacer Is transferred from the transfer body side to the liquid crystal display device substrate side, and the spacer is disposed on the liquid crystal display device 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.

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.

In the method for producing a liquid crystal display device of the present invention, a spacer in which a coating layer is chemically bonded to the surface of base particles is used as a spacer. First, the spacer is arranged on a transfer body, and a substrate for a liquid crystal display device And the spacer on the transfer body are brought into contact with each other, the spacer is transferred from the transfer body side to the liquid crystal display device substrate side, and the spacer is disposed on the liquid crystal display device substrate.

In the spacer used in the present invention, the coating layer is chemically bonded to the surface of the base particle. In the spacer, since the coating layer is chemically bonded to the surface of the base particle, the bond between the base particle of the spacer and the coating layer can be strengthened, and these are easily peeled off. There is nothing. 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 coated fine particles that are sufficiently smaller than the base particles are chemically bonded to the surface of the base particles.
Further, as the spacer, a resin in which a pigment is dispersed or a light-shielding property with a dye or the like can be used.

The coating layer made of the graft polymer (hereinafter, also referred to as a graft polymerization layer) is not particularly limited as long as it is formed by graft polymerization on the surface of the base material particles of the spacer. Reaction of a monomer having an alkyl group of 8 to 22 (hereinafter referred to as monomer A) and a monomer having a substituent represented by the following general formula (1) (hereinafter referred to as monomer B) And a graft polymerization layer formed by the treatment.

式中、Ｒ^１は水素又はメチル基を表し、ｍは１〜１０００の整数を表す。なお、ｍ＋１個のＲ^１は同一であっても良く、異なっていても良い。

In the formula, R ¹ represents hydrogen or a methyl group, and m represents an integer of 1 to 1000. Note that m + 1 R ¹ may be the same or different.

Examples of the graft polymerization layer formed by reacting the monomer A and the monomer B include, for example, a monomer represented by the following general formula (2) as the monomer A, By using a monomer represented by the following general formula (3) as the monomer B and copolymerizing them, a graft polymerized layer can be used.

式中、Ｒ^２は炭素数８〜２２のアルキル基を表し、Ｘは、水素又はメチル基を表す。

In the formula, R ² represents an alkyl group having 8 to 22 carbon atoms, and X represents hydrogen or a methyl group.

式中、Ｒ^３は水素又はメチル基を表し、ｍは１〜１０００の整数を表し、なお、Ｘは上記一般式（２）におけるＸと同一である。また、ｍ＋１個のＲ^３は、同一であってもよく、異なっていてもよい。

Wherein, ^{R 3} represents hydrogen or a methyl group, m represents an integer of 1 to 1,000, still, X is identical to X in the above general formula (2). In addition, m + 1 R ³ may be the same or different.

Examples of the monomer represented by the general formula (2) include lauryl methacrylate, cetyl methacrylate, stearyl methacrylate, and behenyl methacrylate. These monomers may be used independently and may be used together 2 or more types.

Examples of the monomer represented by the general formula (3) include methoxypolyethylene glycol mono (meth) acrylate, polyethylene glycol mono (meth) acrylate, methoxypolypropylene glycol mono (meth) acrylate, and polypropylene glycol mono (meth). An acrylate etc. are mentioned. These monomers may be used independently and may be used together 2 or more types.

Examples of the graft polymerization layer formed by reacting the monomer A and the monomer B include, for example, a monomer represented by the following general formula (4) as the monomer A, As the monomer B, a monomer represented by the following general formula (5) is used, and those obtained by copolymerizing these can be used as a graft polymerization layer.

式中、Ｒ^２は上記一般式（２）におけるＲ^２と同一であり、Ｙはカルボキシル基、スルホン酸基、これらのハロゲン化物やこれらの塩、水酸基、アミノ基、メトキシシラン、塩素、グリシジル基又はイソシアネート基を表す。

In the formula, R ² is the same as R ² in the general formula (2), and Y is a carboxyl group, a sulfonic acid group, a halide or salt thereof, a hydroxyl group, an amino group, a methoxysilane, chlorine, or a glycidyl group. Or represents an isocyanate group.

式中、Ｒ^３及びｍは、一般式（３）におけるＲ^３及びｍと同一であり、Ｙは一般式（４）におけるＹと同一である。

Wherein, ^{R 3} and m have the general formula (3) in the same as ^{R 3} and m, Y is identical to Y in the general formula (4).

Examples of the monomer represented by the general formula (4) include long-chain alkyl carboxylic acids, long-chain alkyl sulfonic acids, halides and salts thereof; long-chain alkyl alcohols, long-chain alkyl amines, long Examples include long-chain alkylmethoxysilane, long-chain alkyl chloride, long-chain alkyl bromide, long-chain glycidyl, and long-chain alkyl isocyanate. These monomers may be used independently and may be used together 2 or more types.

Examples of the monomer represented by the general formula (5) include polyethylene glycol, polypropylene glycol, and those obtained by substituting hydrogen at one end hydroxyl group with a methyl group; polyethylene glycol, polypropylene glycol, or these pieces. And those obtained by substituting the hydrogen at the terminal hydroxyl group with a methyl group, and those obtained by substituting the hydrogen at one terminal hydroxyl group with a reducing group such as a thiol group, an aldehyde group, a mercapto group, or an amino group. These monomers may be used independently and may be used together 2 or more types.

The substrate particles of the spacer are not particularly limited as long as they can be chemically bonded to the coating layer on the surface thereof, but the coating layer is the graft polymer layer, and the monomer When using the monomer represented by the general formula (2) as A and using the monomer represented by the general formula (3) as the monomer B, as the base particle, It is preferable to use those having a reducing group such as a hydroxyl group, a thiol group, an aldehyde group, a mercapto group, or an amino group on the surface.

The coating layer is the graft polymer layer, and the monomer A is a monomer represented by the general formula (4), and the monomer B is the general formula (5). In the case of using a monomer represented by), divinylbenzene / 2-hydroxyethyl methacrylate copolymer, polyvinyl alcohol / divinylbenzene copolymer, divinylbenzene / methacrylic acid copolymer, divinyl are used as the base particles. Vinyl polymer fine particles such as benzene / glycidyl methacrylate copolymer and vinyl copolymers such as divinylbenzene / vinyl isocyanate copolymer; polycondensation polymer particles such as benzoguanamine resin and melamine resin cured resin Is preferably used.

The specific method of reacting the monomer A and the monomer B to form a graft polymerization layer on the surface of the substrate particle is not particularly limited. When the monomer represented by the general formula (2) is used, and the monomer represented by the general formula (3) is used as the monomer B, the above general formula (2) After impregnating the monomer represented by formula (3) and the monomer represented by the general formula (3), an oxidant such as cerium salt or persulfate is allowed to react, and radicals are formed on the surface of the substrate particles. And a method of forming a graft polymerization layer on the surface of the base particle using the radical as a starting point can be used.
When the monomer represented by the general formula (4) is used as the monomer A and the monomer represented by the general formula (5) is used as the monomer B, A method in which after the base material particles are dispersed in a solvent, the monomer represented by the general formula (4) and the monomer represented by the general formula (5) are added to the solvent and reacted. Can be used.

When the coating layer coated on the surface of the spacer is made of a thermoplastic resin, the thermoplastic resin is not particularly limited, but the liquid crystal display substrate is heated to melt or soften the surface of the spacer at that temperature. Therefore, the glass transition temperature (Tg) is preferably 150 ° C. or lower. If it exceeds 150 ° C., the substrate for the liquid crystal display device expands at that temperature, which may make alignment difficult.

The transfer body is not particularly limited, and may be, for example, a flat plate shape or a roll shape. When transferring the spacer, in the case of a flat plate, the transfer body and the liquid crystal display substrate may be brought close to each other in parallel, and the liquid crystal display substrate may be brought into contact with the surface of the spacer. In this case, the liquid crystal display substrate may be brought into contact with the surface of the spacer by adjusting the feed speed of the liquid crystal display substrate while rotating the roll.

For the arrangement of the spacers on the transfer body, a conventional 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. The charging of the spacer can be adjusted by the piping material, the piping length, the pressure of compressed air, and the like.

In the liquid crystal display device manufacturing method of the present invention, the liquid crystal display device substrate is heated and brought into contact with the spacer on the transfer member to melt or soften the surface of the spacer, and the liquid crystal display device substrate is provided with the spacer. It is preferable that the spacer is transferred from the transfer body side to the liquid crystal display device substrate side by bonding, and the spacer is disposed on the liquid crystal display device substrate.
A method for transferring the spacer onto the liquid crystal display device substrate by heating will be described with reference to FIG.
As shown in FIG. 1, a liquid crystal display heated to a temperature equal to or higher than the glass transition temperature (Tg) of the coating layer on a spacer in which a coating layer made of a thermoplastic resin is chemically bonded to the surface on the transfer body. When the device substrate is brought into contact, the surface of the spacer on the side in contact with the heated liquid crystal display device substrate melts or softens, so that the contact area increases compared to the side in contact with the unheated transfer body. Then, since the adhesive force on the side with the larger contact area becomes stronger, the spacer can be transferred by separating the liquid crystal display substrate. In FIG. 1, there is no limitation on the vertical positional relationship between the liquid crystal display device substrate and the transfer body.

By such a method, there is no influence of charge attenuation or the like, and the spacer can be stably transferred without being affected by the wiring electrode on the substrate.
As described above, when transferring the spacer, the liquid crystal display substrate needs to be in contact with the spacer, but if the contact is made for a long time, the heat of the liquid crystal display substrate heats the transfer body. In some cases, the transfer efficiency of the spacer may deteriorate. Therefore, when the liquid crystal display substrate is brought into contact with the spacer for transfer, it is preferable that the contact time is several seconds to several tens of minutes.

Further, when the liquid crystal display substrate is brought into contact with the spacer for transfer, the transfer efficiency of the spacer may be improved by pressing the transfer body or the liquid crystal display substrate with a certain force.
Further, cooling may be performed to prevent the transfer body from being heated.

In order to transfer the spacer from the transfer body side to the substrate side for the liquid crystal display device, it is necessary to melt or soften the surface layer (coating layer) of the spacer. Therefore, the glass of the coating layer chemically bonded to the surface of the spacer to be used It is necessary to heat the liquid crystal display substrate at a temperature equal to or higher than the transition temperature (Tg). At this time, the transfer may be performed while the liquid crystal display substrate is in contact with the hot plate, or the liquid crystal may be liquidated in advance. The display substrate may be heated, and the transfer may be performed before the substrate temperature has cooled. In addition to heating the transferred liquid crystal display device substrate, an oven, infrared heating, or the like may be used.

Here, as shown in FIG. 2, when a substrate having irregularities is used as a transfer body, first, spacers are uniformly arranged on the transfer body, and only the spacers arranged on the convex portions of the transfer body are transferred to the transfer body side. Is preferably transferred to the substrate side for a liquid crystal display device. With this operation, the spacer can be disposed at an arbitrary position on the liquid crystal display device substrate if the position of the convex portion of the transfer body is determined with respect to the liquid crystal display device substrate.

For example, as shown in FIG. 2, by aligning the black matrix (BM) and the position of the convex portion of the transfer body, the spacer in the concave portion cannot come into contact with the substrate for the liquid crystal display device. It is possible to arrange the spacers in the black matrix (BM) portion. In FIG. 2, the electrodes and color filters of the liquid crystal display substrate are omitted.

Further, when a transfer body having a gap (interval) is used, it is preferable to first attach a spacer on the transfer body and transfer it from the transfer body side to the liquid crystal display device substrate side. By this operation, the spacer can be arranged at an arbitrary position on the liquid crystal display device substrate if the position of the non-voided portion of the transfer body is determined with respect to the liquid crystal display device substrate. The thing with the said space | gap (space | interval) is not specifically limited, For example, a mesh shape, a some linear body, etc. are mentioned.

For example, as shown in FIG. 3, when a spacer is attached to a mesh-like transfer body and transferred, the spacer can be arranged in the black matrix portion by matching the pitch of the mesh with the pitch of the black matrix. It becomes possible. In FIG. 3, the electrodes and color filters of the liquid crystal display substrate are omitted.

For example, as shown in FIG. 4, when a spacer is attached to a transfer body that is a plurality of linear bodies and transferred, a plurality of linear bodies arranged with a gap (interval) larger than the spacer diameter are used. When the spacers are dispersed, the spacers can be attached only on the linear body. Here, by making the pitch of the plurality of linear bodies coincide with the pitch of the black matrix, the spacer can be arranged in the black matrix portion. In FIG. 4, the electrodes and color filters of the liquid crystal display substrate are omitted.

When arranging the spacers on the transfer body, it is preferable that the spacers are uniformly arranged on the transfer body. However, the conventional dry spraying method, wet spraying method, etc. may be used. Alternatively, a certain amount of spacers may be placed on the transfer body and spread uniformly by vibration or the like. Furthermore, you may carry out in the way of a sieve.

When using a substrate with irregularities as a transfer body, or when using a mesh-like one or a form having a gap (gap) such as a plurality of linear bodies, for example, spraying spacers using a dry spraying method Then, the spacer may be arranged on the transfer body by a method of applying a voltage having a polarity opposite to the charged polarity of the spacer at the time of dispersion to the transfer body.

As described above, when the spacer is disposed at an arbitrary position on the liquid crystal display substrate, it is necessary to match the position at which the spacer on the transfer body is disposed with the arbitrary position on the liquid crystal display substrate. However, since the substrate for a liquid crystal display device undergoes thermal expansion due to the influence of heating, the spacer arrangement position (pitch) may need to be corrected.

By disposing the spacer on the transfer body and melting or softening the surface of the spacer with the heated liquid crystal display substrate, a difference occurs in the adhesion force of the spacer to the transfer body and the liquid crystal display substrate. Since the spacer is transferred from the transfer member side to the liquid crystal display substrate side due to the difference in adhesion, the spacer can be stably transferred. In addition, since the transfer position can be controlled by the transfer body, the spacer can be reliably arranged at an arbitrary position regardless of the electrode pattern of the liquid crystal display device. Therefore, the spacer can be removed from the pixel portion, and any type of liquid crystal display device with high contrast can be manufactured.

Another aspect of 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 transferred. When the substrate is disposed on a substrate for a liquid crystal display device, the transfer member is a substrate on which a patterned conductor is formed, and a voltage is applied to the patterned conductor in the transfer member using a charged spacer. By applying, the surface of the spacer is melted or softened by bringing the liquid crystal display device substrate into contact with the spacer arranged on the transfer body in a heated state, and the surface of the spacer is melted or softened. Due to the difference in adhesion due to melting or softening, the spacer is transferred from the transfer body side to the liquid crystal display device substrate side, and the spacer is placed directly on the black matrix of the liquid crystal display device substrate. It is a manufacturing method of a liquid crystal display device which is disposed in a portion.

According to another aspect of the present invention, there is provided a method of manufacturing a liquid crystal display device according to the present invention, which is a method of 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 transferred. This is applied when the liquid crystal display device is placed on a substrate for a liquid crystal display device.
The substrate for the liquid crystal display device is not particularly limited, and examples thereof include those similar to those described in the method for manufacturing a liquid crystal display device of the present invention.

In another aspect of the method for producing a liquid crystal display device of the present invention, a transfer body in which a patterned conductor (electrode) is formed on a substrate is used. First, the charged spacers are patterned on the transfer body. By applying a voltage to the conductor, the substrate is arranged on the transfer member, and the substrate for the liquid crystal display device is heated and brought into contact with the spacer arranged on the transfer member to melt or soften the surface of the spacer. Alternatively, the spacer is transferred from the transfer member side to the liquid crystal display device substrate side due to the difference in adhesion due to softening, and the spacer is disposed in the portion immediately below the black matrix of the liquid crystal display device substrate.

As the substrate in the transfer body, an insulating substrate such as a glass substrate or a resin substrate; a conductive substrate such as a stainless steel (SUS) substrate or an aluminum (Al) substrate can be used. In order to form an electric field corresponding to the shape of the electrode on the transfer body, it is necessary to laminate an insulating resin or the like between the electrode and the conductive substrate. Thereby, when a voltage is applied to the electrodes, current can be prevented from leaking between the electrodes, and current can be prevented from leaking to the substrate.

Although it does not specifically limit as said conductor (electrode), A thin film conductor is preferable. It does not specifically limit as said thin film conductor, For example, ITO, a metal thin film, etc. are mentioned.
The shape of the transfer body is not particularly limited. For example, as described in the above-described method for manufacturing a liquid crystal display device of the present invention, a flat plate shape or a roll shape may be used. Good.

Here, in the transfer body, when the spacer is arranged between the electrodes, a material with poor wettability may be used as the substrate so that the transfer can be performed more easily. In addition, when the spacer is arranged on the electrode, the electrode may be coated with a material having poor wettability.

The spacer is not particularly limited as long as the surface is melted or softened by heating, but as described in the above-described method for producing a liquid crystal display device of the present invention, the base particles and the coating layer are chemically formed. It is preferably formed via a bond. In addition, when the spacers are charged and sprayed by the dry spraying method, the glass transition temperature (Tg) of the resin constituting the coating layer formed on the surface of the spacer is preferably room temperature or higher.

In this case, if the glass transition temperature (Tg) is less than room temperature, it is difficult to stably dry-spread the spacers, and the spacers may not be arranged on the transfer body with high accuracy. Since the spacer is also attached to the surface, it may be difficult to transfer the spacer.

From these relationships, in the manufacturing method of the liquid crystal display device according to another aspect of the present invention, in order to transfer the spacer from the transfer body side to the liquid crystal display device substrate side, the glass transition of the surface layer (coating layer) of the spacer used It is necessary to heat the liquid crystal display substrate at a temperature equal to or higher than the temperature (Tg).
In the arrangement of the spacers on the transfer member, a conventional dry spraying device or the like can be used in the same manner as described in the liquid crystal display device manufacturing method of the present invention described above.

Another method of manufacturing a liquid crystal display device according to the present invention will be described with reference to FIGS. 1 and 6 in which a spacer is placed on a liquid crystal display device substrate by a transfer member. As shown in FIG. 6, the charged spacers are arranged on the transfer body by applying a voltage to the patterned conductors on the transfer body, and the liquid crystal display substrate is arranged on the transfer body in a heated state. Contact the spacer. As a result of this operation, if the spacer has a coating layer chemically bonded to the surface, as shown in FIG. 1, the transfer of the spacer is performed in the same manner as described in the method for manufacturing the liquid crystal display device of the present invention described above. It will be possible. By aligning the transferred position with the position of the black matrix, the spacer can be arranged in the black matrix portion.

By such a method, the spacers can be stably arranged on the substrate for the liquid crystal display device without being affected by the attenuation of charging or the like and without being affected by the wiring electrodes on the substrate.
When the spacer is transferred as described above, the points to consider such as the contact time when the substrate for the liquid crystal display device is brought into contact with the spacer to perform the transfer are the same as those in the method for manufacturing the liquid crystal display device of the present invention described above. It is. However, since the substrate for the liquid crystal display device undergoes thermal expansion due to the influence of heating, in order to align the position where the spacer is transferred with the position of the black matrix, it may be necessary to correct the arrangement position (pitch) of the spacer. .

Here, it is preferable that the transfer body is formed by using an insulator as a substrate and laminating a patterned conductor or a patterned conductor and an insulator on the surface of the substrate. The substrate used in this case is not particularly limited as long as it is an insulator, and examples thereof include a glass substrate and a resin substrate.

As such a transfer body, for example, as shown in FIG. 7, the transfer body has a structure formed as a conductor / insulator from the upper layer, or has a structure formed as an insulator / conductor / insulator. Etc. Here, in the structure formed as a conductor / insulator, the electric field may spread to a region where no conductor exists due to the influence of humidity or the like, and the arrangement of the spacers may be disturbed. Therefore, by further providing an insulating film on the surface layer, the influence of humidity and the like can be eliminated, and the spacers can be stably arranged. In this case, the surface insulating film is preferably made of a highly insulating material such as polyimide. Further, the surface insulating film is preferably as thin as possible. If the film thickness is too thick, the electric field suitable for spacer arrangement may be disturbed.

In this case, as shown in FIG. 7, when the transfer body is placed on a grounded stage in the spray tank, and a voltage having the same polarity as the charged polarity of the spacer is applied to the patterned conductor in the transfer body, By placing the transfer body on the grounded stage, the potential of the region without the conductor is lowered, so that an electric field suitable for spacer arrangement is formed on the transfer body.

When the spacers are dispersed in this state, the spacers receive repulsive force from the conductor and are arranged in a region where there is no conductor having a low potential.
Therefore, in the case where spacers are dispersed using a substrate using an insulator as a transfer body, it is necessary to place the transfer body on a grounded stage.

In this way, as shown in FIG. 7, a patterned conductor in the transfer body is formed so that a region where the conductor does not exist is formed at a position corresponding to the black matrix and about the width of the black matrix. With respect to the patterned conductor in such a transfer body, the spacer is arranged in a region where the conductor does not exist, and is transferred corresponding to the position of the black matrix of the substrate for the liquid crystal display device, thereby transferring the spacer to the liquid crystal display device. It becomes possible to arrange in the part immediately under the black matrix of the substrate for use.

The shape of the region where the conductor does not exist as described above may be a square, a circle, a polygon, or the like, and the dot pitch, the pixel pitch, every several pixels, one of the horizontal direction and the vertical direction, or Since it may have a shape such as a bi-directional pattern or a stripe shape, it is arbitrary and may be any width as long as the width of the black matrix at a position corresponding to the black matrix.

As an example of the structure of the patterned conductor in the transfer body, FIG. 13 shows a case where the region where the conductor does not exist is a rectangle and a cross. In this case, spacers are arranged in a region where no conductor exists, and the region where the conductor does not exist in the transfer body and the black matrix in the liquid crystal display substrate are aligned. In FIG. 13, a spacer for only one line is shown, and spacers for the other lines are omitted.

As another example, the positional relationship between the area where the patterned conductor does not exist in the transfer body and the position of the black matrix (BM) in the liquid crystal display substrate when the transfer body and the color filter substrate are overlapped. Is shown in FIG. In this case, a region where no conductor exists can be arbitrarily formed. These can be produced by a known method such as photolithography-etching after forming ITO by sputtering or vapor deposition.

Further, the transfer body may be formed by using a conductor as a substrate and laminating an insulator and a patterned conductor, or an insulator, a patterned conductor and an insulator on the surface of the substrate. preferable. The substrate used in this case is not particularly limited as long as it is a conductor, and examples include stainless steel (SUS) substrates and aluminum (Al) substrates.

As such a transfer body, for example, as shown in FIG. 8, the transfer body has a structure formed as a conductor / insulator / conductor from the upper layer, and is formed as an insulator / conductor / insulator / conductor. The thing of the structure currently made is mentioned.

In the case of a transfer body having a structure as shown in FIG. 7, an electric field suitable for spacer arrangement is not formed unless the transfer body is placed on a grounded stage. In the case of a transfer body having a structure as shown in FIG. Then, if the conductor portion of the substrate in the transfer body is grounded, an electric field suitable for the arrangement of the spacers is formed.

If a transfer body having such a structure is used, for example, as shown in FIG. 9, a voltage having a polarity opposite to the charged polarity of the spacer is applied to the substrate, which is a conductor in the transfer body, so If a voltage having the same polarity as the charged polarity of the spacer is applied to the body, the spacer can be arranged in the gap between the patterned conductors using repulsive force and attractive force.
In this way, the spacers can be arranged in the gaps between the patterned conductors in the transfer body, and the pitch of the arrangement parts may be formed in accordance with the black matrix.

Therefore, the spacer is arranged in a region where the conductor does not exist and is transferred corresponding to the position of the black matrix of the substrate for the liquid crystal display device with respect to the patterned conductor in such a transfer body. It becomes possible to arrange the display device substrate immediately below the black matrix.

Further, as shown in FIG. 15, a voltage having the same polarity as the charge polarity of the spacer is applied to the substrate which is a conductor in the transfer body, and a voltage having a polarity opposite to the charge polarity of the spacer is applied to the patterned conductor on the substrate. In this case, spacers can be arranged on the patterned conductor using repulsive force and attractive force.
In this way, the spacers can be arranged on the patterned conductor in the transfer body, and the pitch of the arrangement part may be formed in accordance with the black matrix.

Further, similarly to the case shown in FIG. 15, in the transfer body, a conductor having the same shape as the black matrix is formed on the substrate, and a voltage having the same polarity as the charge polarity of the spacer is applied to the substrate which is the conductor in the transfer body. If a voltage having the opposite polarity to the charged polarity of the spacer is applied to a conductor having the same shape as the black matrix on the substrate, repulsive force and attractive force are used. In this case, the conductive material having the same shape as the black matrix is used. Spacers can be arranged on the body.

Therefore, by aligning the spacer in the region where the patterned conductor is present and transferring the pattern conductor in the transfer body corresponding to the position of the black matrix of the substrate for the liquid crystal display device, The spacer can be disposed immediately below the black matrix of the liquid crystal display device substrate.

Furthermore, as shown in FIG. 10, as the structure of the patterned conductor in the transfer body, the conductor (floating electrode) is defined as a region where the position corresponding to the black matrix is not electrically connected to the other. 7 and applying a voltage having the same polarity as the charged polarity of the spacers to the conductors (electrodes) in other regions, an electric field similar to that shown in FIG. 7 can be obtained, and electrically connected to the other. A spacer can be disposed on a conductor that has not been subjected to.

Also in this case, when the transfer body uses an insulator as a substrate and the surface of the substrate is a patterned conductor or a laminate of a patterned conductor and an insulator, the transfer body Must be placed on a grounded stage. In addition, when the transfer body uses a conductor as a substrate and the surface of the substrate is an insulator and a patterned conductor, or an insulator, a patterned conductor and an insulator are laminated. May ground the substrate, which is a conductor, or apply a voltage having a polarity opposite to the charged polarity of the spacer.

Therefore, the spacers are arranged on the conductors that are not electrically connected to the pattern-like conductors in the transfer body, and transferred in correspondence with the positions of the black matrix of the substrate for the liquid crystal display device. Thus, the spacer can be disposed immediately below the black matrix of the liquid crystal display substrate.

As a method of arranging the spacers, stripe-shaped conductors (electrodes) are formed on the substrate as patterned conductors in the transfer body, and different potentials are alternately formed on the arranged conductors (electrodes). Then, the spacers may be arranged. At this time, the electric potential formed on each conductor (electrode) may be the same polarity as the charged polarity of the spacer or may have a different polarity.

In this state, for example, as shown in FIG. 11, when spacers charged to positive polarity (+) are dispersed, the spacers can be arranged at the center of a low potential conductor (electrode). In this case, the positions of the spacers arranged on the striped conductors (electrodes) may be matched with the black matrix portion. In FIG. 11, different potentials are indicated by + and-.

Such a spacer arrangement method can be realized, for example, by using a patterned conductor as shown in FIG. That is, when a + -potential is alternately formed on a striped conductor (electrode), a positively charged (+) charged spacer is repelled by a conductor (electrode) having a + potential, and- Since the potential is drawn to the conductor (electrode) having the potential formed thereon, the spacer can be arranged at the center of the conductor (electrode) having the potential of −. Therefore, the spacer can be transferred to the black matrix portion by adjusting the arrangement pitch to the pitch of the black matrix.

In another aspect of the method of manufacturing a liquid crystal display device of the present invention, when a conductor is used as a transfer body, a voltage is directly applied to the stage itself without grounding the stage. You may create the same state as applying a voltage to a substrate which is a conductor.

In another aspect of the method for manufacturing a liquid crystal display device of the present invention, as described above, one or more electric potentials are applied to the patterned conductor in the transfer body and / or the substrate in the transfer body. In the case of a conductor, the spacers can be arranged on the transfer body by applying different potentials to the substrate and the patterned conductor.

Therefore, by adjusting the charging polarity of the spacer, the potential applied to the patterned conductor in the transfer body, and the potential applied to the substrate and the patterned conductor when the substrate in the transfer body is a conductor. On the transfer body, spacers can be arranged in the gaps between the patterned conductors, and the spacers can be arranged on the patterned conductors.

In the method for producing a liquid crystal display device of the present invention, since the coating layer is chemically bonded to the surface of the base material particle, the spacer may strengthen the bond between the base material particle and the coating layer. And they are not easily peeled off. The spacers are arranged on the transfer body, and the spacer is transferred from the transfer body side to the liquid crystal display substrate side by contacting the liquid crystal display substrate and the spacer on the transfer body. Regardless of the electrode pattern of the device, it can be reliably arranged at an arbitrary position. Therefore, the spacer can be excluded from the pixel portion, and any type of liquid crystal display device with high contrast can be manufactured. 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.

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, as a transfer body, a resist is applied on a glass substrate, and trapezoidal irregularities having a height of 10 μm and a top width of 20 μm are formed in stripes at a pitch of 300 μm by photolithography, as shown in FIG. I prepared what I did.
As a substrate for a liquid crystal display device, a common conductor substrate for a TFT type liquid crystal display device was prepared. In this common electrode substrate, the black matrix pitch (the pitch with the color filter RGB as one pixel) is 300 μm, and the width of the black matrix is 30 μm.

Next, a mixed solution of 100 parts by weight of divinylbenzene and 2 parts by weight of benzoyl peroxide was added to 800 parts by weight of a 3% aqueous solution of polyvinyl alcohol, and the particle size was adjusted by stirring with a homogenizer. Then, it heated up to 80 degreeC under nitrogen stream, stirring, and reacted for 15 hours. The obtained fine particles were washed with hot ion-exchanged water and methanol and then subjected to a classification operation to produce base particles. The obtained base particles had an average particle size of 6.0 μm and a CV value of 5%.

In a separable flask, 100 parts by weight of ion-exchanged water, 100 parts by weight of acetone, 5 parts by weight of lauryl methacrylate, 3 parts by weight of methoxypolyethylene glycol monomethacrylate (average EO added mole number m = 23), and the obtained base particles After adding 5 parts by weight and sufficiently dispersing with a sonicator, stirring was performed uniformly.
Next, nitrogen gas was introduced and stirred at 30 ° C. for 3 hours. To this, 12.5 parts by weight of a 0.1 mol / L ceric ammonium nitrate solution prepared using a 1 mol / L nitric acid aqueous solution was added and reacted for 5 hours.
After completion of the reaction, the reaction solution was taken out, and the particles and the reaction solution were separated by a membrane filter having a pore size of 3 μm. The obtained particles were sufficiently washed with ethanol and acetone, and dried under reduced pressure in a vacuum dryer, thereby producing a spacer having a coating layer formed of a graft polymer on the surface.

Subsequently, the spacer obtained on the transfer body was uniformly arranged using DISPA-μR (trade name, manufactured by Nissin Engineering Co., Ltd.) as a dry spraying device for the spacer.
Next, the common electrode substrate is brought into close contact with a hot plate at 100 ° C. and heated, and the convex position of the transfer body on which the spacers have been previously dispersed is aligned with the black matrix portion, as shown in FIG. The spacer was brought into contact with the spacer at a load of about 0.06 kgf / cm ² for 10 seconds.

Thereafter, the common electrode substrate was pulled away. When the common electrode substrate onto which the spacer was transferred was observed with an optical microscope, the spacer was disposed at the position of the black matrix.
Further, when the spacers on the convex positions of the transfer body were observed with an optical microscope, almost all the spacers were transferred and did not exist.
Using the common electrode substrate on which the spacers are arranged, a TFT type liquid crystal display device was manufactured in the same process as before. This TFT type liquid crystal display device has a high contrast and good display characteristics because there is no spacer in the display pixel.

(Example 2)
In Example 1, as shown in FIG. 4, a transfer body in which a plurality of wires having a line width of 30 μm were formed at a pitch of 300 μm was prepared. Further, when the common electrode substrate is heated by being brought into close contact with a 100 ° C. hot plate and brought into contact with the spacer for 10 seconds under a load of about 0.06 kgf / cm ² , the wire of the transfer body on which the spacer has been previously dispersed is applied. The same operation was performed except that the position of the black matrix was aligned with that of the black matrix portion and brought into contact with the spacer in the manner shown in FIG.

When the common electrode substrate onto which the spacer was transferred was observed with an optical microscope, the spacer was disposed at the position of the black matrix.
Further, when the spacers on the wire of the transfer body were observed with an optical microscope, some of the spacers adhered to the side surfaces of the wire remained, but almost all the spacers were transferred and did not exist.
Using the common electrode substrate on which the spacers are arranged, a TFT type liquid crystal display device was manufactured in the same process as before. This TFT type liquid crystal display device has a high contrast and good display characteristics because there is no spacer in the display pixel.

(Example 3)
First, a 20 μm × 270 μm rectangular etching region as shown in FIG. 13 is formed at 300 μm pitch on a glass substrate on which ITO is formed as a transfer body by photolithography using ITO. Further, polyimide resin is formed on the substrate. Was prepared with a thickness of 0.05 μm.
As a substrate for a liquid crystal display device, a common electrode substrate for a TFT type liquid crystal display device was prepared. In this common electrode substrate, the black matrix pitch (the pitch with the color filter RGB as one pixel) is 300 μm, and the width of the black matrix is 20 μm.
The etching area in the transfer body was designed so as to coincide with the position of the black matrix when it was aligned with the common electrode substrate.

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.

When the transfer body on which the spacers were dispersed was observed with an optical microscope, the spacers were arranged in the etching region of the transfer body.
Next, the common electrode substrate is placed on a hot plate at 100 ° C. and heated, and the alignment positions of the spacers on the transfer body on which the spacers have been previously dispersed are aligned with the black matrix portion. The spacer was brought into contact with the spacer for 10 seconds at a load of about 0.06 kgf / cm ² .

Thereafter, the common electrode substrate was pulled away. When the common electrode substrate onto which the spacer was transferred was observed with an optical microscope, the spacer was disposed at the position of the black matrix.
Using the common electrode substrate on which the spacers are arranged, a TFT type liquid crystal display device was manufactured in the same process as before. This TFT type liquid crystal display device has a high contrast and good display characteristics because there is no spacer in the display pixel.

Example 4
In Example 3, as the transfer body, the electrode structure has a comb shape as shown in FIG. 12, and the width of the ITO line in the portion where the electrodes are formed in a stripe shape is 100 μm, and the distance (etching region) is 50 μm. What was formed was prepared. Thereafter, a polyimide film was formed on the surface in the same manner as in Example 3, and the transfer body was placed on a grounded stage in the spraying apparatus.
Using two DC power supplies, +2.20 kV is applied to one of the comb-shaped electrodes, and +2.00 kV is applied to the other, and in this state, spacers are dispersed in the same manner as in Example 3. It was.

When the transfer body on which the spacers were dispersed was observed with an optical microscope, the spacers were arranged in almost one row as shown in FIG. 11 at the center of the ITO electrode to which +2.00 kV was applied. This arrangement pitch was 300 μm.
Thereafter, the spacer was transferred in the same manner as in Example 3. When the common electrode substrate onto which the spacer was transferred was observed with an optical microscope, the spacer was disposed at the position of the black matrix.

(Example 5)
In Example 3, as a transfer body, etching was performed so as to form an electrode that was not connected to the other as shown in FIG. The area of the electrode that is not connected to the other is 20 μm × 270 μm and is partitioned by etching with a line width of 10 μm.

Using this transfer body, a voltage was applied in the same manner as in Example 3 to disperse the spacers. As a result, the spacers were arranged in electrode regions that were not connected to others in the transfer body.
Thereafter, the spacer was transferred in the same manner as in Example 3. When the common electrode substrate onto which the spacer was transferred was observed with an optical microscope, the spacer was disposed at the position of the black matrix.

(Example 6)
In Example 3, a transfer body having a structure as shown in FIG. 9 is used. First, an acrylic resin is coated on a stainless steel (SUS) plate, an ITO film is formed, and then a line width of 80 μm is formed by etching. A striped electrode having a line spacing of 20 μm (etching region) was prepared. Thereafter, a polyimide film was formed on the surface in the same manner as in Example 3, and the transfer body was placed on a sprayer stage as an insulator in the spraying device.

The etching area in the transfer body was designed to correspond to the pitch of the black matrix between the dots of the color filter RGB when alignment with the common electrode substrate used was performed.
Using two DC power supplies, -0.8 kV is applied to the stainless steel (SUS) plate, +1.2 kV is applied to the ITO electrode, and this state is maintained and the spacers are dispersed in the same manner as in Example 3. went.

When the transfer body on which the spacers were dispersed was observed with an optical microscope, the spacers were arranged in the etching region.
Thereafter, the spacer was transferred in the same manner as in Example 3. When the common electrode substrate onto which the spacer was transferred was observed with an optical microscope, the spacer was disposed at the position of the black matrix.

(Example 7)
In Example 3, a transfer body having the same ITO pattern shape as the black matrix pattern of the liquid crystal display substrate to be used was prepared. After that, as shown in FIG. 15, the transfer body was placed on an insulated stainless steel (SUS) stage in the spraying device.
Using two DC power supplies, +1.5 kV is applied to the stainless steel (SUS) stage, −0.7 kV is applied to the ITO electrode, and this state is maintained and the spacer Spraying was performed.

When the transfer body on which the spacers were dispersed was observed with an optical microscope, the spacers were arranged on the black matrix-shaped electrodes.
Thereafter, the spacer was transferred in the same manner as in Example 3. When the common electrode substrate onto which the spacer was transferred was observed with an optical microscope, the spacer was disposed at the position of the black matrix.

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 this invention, it is a conceptual diagram for demonstrating the method to transfer a spacer from the transfer body side to the substrate side for liquid crystal display devices by a heat | fever. In FIG. 1, the diagram on the left is a conceptual diagram showing a heated liquid crystal display device substrate in contact with a spacer in which a coating layer made of a graft polymer is formed on the surface of a transfer body. The center diagram is a conceptual diagram showing that the surface of the spacer on the side in contact with the heated liquid crystal display substrate is melted or softened, and the contact area is increased as compared with the side in contact with the unheated transfer body. Yes, the diagram on the right shows the concept that the spacer is transferred from the transfer body side to the liquid crystal display device substrate side by separating the liquid crystal display device substrate because the adhesive force on the side with the larger contact area becomes stronger. It is. In the method for manufacturing a liquid crystal display device according to the present invention, a substrate having irregularities is used as a transfer body. First, spacers are uniformly arranged on the transfer body, and only the convex spacers on the transfer body are used for the liquid crystal display device from the transfer body side. It is a conceptual diagram for demonstrating transcription | transfer to the board | substrate side. In FIG. 2, the left diagram is a conceptual diagram showing that the spacers are uniformly arranged on the transfer body, which is a substrate with unevenness, and the right diagram shows liquid crystal only on the convex spacers of the transfer body. It is a conceptual diagram which shows the place which contacted the black matrix (BM) part of the board | substrate for display apparatuses. In the method for manufacturing a liquid crystal display device according to the present invention, a description will be given of using a mesh-shaped transfer body as a transfer body, first attaching a spacer on the transfer body, and transferring from the transfer body side to the liquid crystal display substrate side. It is a conceptual diagram for. In FIG. 3, the upper diagram is a conceptual diagram showing the spacers attached on the mesh-shaped transfer member, and the lower diagram shows the pitch of the mesh as the black matrix (the liquid crystal display device substrate). It is a conceptual diagram which shows the place made to correspond with the pitch of BM). In the method for manufacturing a liquid crystal display device according to the present invention, a description will be given of using a plurality of linear bodies as a transfer body, first attaching a spacer on the transfer body, and transferring from the transfer body side to the liquid crystal display substrate side. FIG. In FIG. 4, the upper diagram is a conceptual diagram showing a case where a spacer is attached on a transfer body, which is a plurality of linear bodies, and the center diagram is arranged with a gap (interval) larger than the spacer diameter. When spacers are dispersed using a plurality of linear bodies, it is a conceptual diagram for explaining that the spacers are attached only on the linear bodies. The lower figure shows the pitches of the plurality of linear bodies. It is a conceptual diagram which shows the place made to correspond with the pitch of the black matrix (BM) of the board | substrate for liquid crystal display devices. FIG. 4 is a conceptual diagram of a transfer body used in an example of a method for manufacturing a liquid crystal display device according to the present invention, in which a resist is applied on a glass substrate and trapezoidal irregularities are formed in stripes by photolithography. It is a conceptual diagram for demonstrating the method of arrange | positioning a spacer on the board | substrate for liquid crystal display devices by a transfer body in the manufacturing method of the liquid crystal display device of this invention of another aspect. In FIG. 6, the left figure is a conceptual diagram showing the arrangement of the spacers in the gaps between the patterned conductors on the transfer body (substrate), and the middle figure is heated by a hot plate or the like. It is a conceptual diagram which shows the place which contacts the spacer which arranged the board | substrate for liquid crystal display devices on the transfer body, and the right figure is a conceptual diagram which shows the place where the spacer was transcribe | transferred to the board | substrate for liquid crystal display devices by the difference in adhesive force It is. It is the conceptual diagram which showed an example of the transfer body in the manufacturing method of the liquid crystal display device of this invention of another aspect, and uses an insulator as a board | substrate as a transfer body. In addition, when this transfer body is placed on a grounded stage and a voltage having the same polarity as the charge polarity of the spacer is applied to the patterned conductor (electrode) on the transfer body, the pattern on the patterned conductor (electrode) It is also a conceptual diagram for demonstrating the electric field formed in this. In FIG. 7, the upper left figure is a conceptual diagram showing a structure in which a transfer body is formed as a conductor / insulator (substrate) from the upper layer, and the upper right figure is a transfer body from the upper layer. It is a conceptual diagram which shows the thing of the structure formed as an insulator / conductor / insulator (substrate), and the lower figure is an electric field formed on a patterned conductor (electrode) as described above. It is a conceptual diagram for demonstrating. It is the conceptual diagram which showed an example of the transfer body in the manufacturing method of the liquid crystal display device of another aspect of this invention, As a transfer body, the conductor is used as a board | substrate. In FIG. 8, the left figure is a conceptual diagram showing a structure in which a transfer body is formed as a conductor / insulator / conductor (substrate) from the upper layer, and the right figure is a transfer body. It is a conceptual diagram which shows the thing of the structure currently formed as an insulator / conductor / insulator / conductor (board | substrate) from the upper layer. In another aspect of the method for manufacturing a liquid crystal display device of the present invention, a voltage having a polarity opposite to the charging polarity of the spacer is applied to a substrate which is a conductor in the transfer body, and the spacer is applied to the patterned conductor (electrode) in the transfer body. It is a conceptual diagram for demonstrating that a spacer is arranged in the space | interval of a pattern-like conductor (electrode) using the repulsive force and attractive force by applying the voltage of the same polarity as this charge polarity. In another aspect of the method of manufacturing a liquid crystal display device of the present invention, as a structure of a transfer body, a conductor (floating electrode) in which a position corresponding to a black matrix (BM) is a region not connected to others It is a conceptual diagram for demonstrating forming the conductor (electrode) of other area | regions. In another aspect of the method for manufacturing a liquid crystal display device of the present invention, stripe-shaped conductors (electrodes) are formed on a substrate as patterned conductors in a transfer body, and the conductors (electrodes) arranged alternately are alternately arranged. It is a conceptual diagram for demonstrating forming a different electric potential in and arranging a spacer. In another aspect of the method for manufacturing a liquid crystal display device of the present invention, a striped conductor (electrode) is formed on a substrate as a patterned conductor (electrode) in a transfer body, and the striped conductor (electrode) is formed. It is a conceptual diagram for demonstrating forming the electric potential of +-alternately. In another embodiment of the method for manufacturing a liquid crystal display device of the present invention, as an example of the structure of the patterned conductor (electrode) in the transfer body, the case where the region where the conductor (electrode) does not exist is a rectangle or a cross will be described. It is a conceptual diagram for. In FIG. 13, 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 center 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 and the like 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. In another aspect of the method for manufacturing a liquid crystal display device of the present invention, in the case where the transfer body and the color filter substrate are overlapped with each other, the region where the patterned conductor (electrode) does not exist in the transfer body, and the liquid crystal display device substrate It is a conceptual diagram for demonstrating the positional relationship with the position of a black matrix (BM). It is also a conceptual diagram for explaining that the shape of the region where no electrode exists can be arbitrary. In another aspect of the method of manufacturing a liquid crystal display device of the present invention, a voltage having the same polarity as the charge polarity of a spacer is applied to a substrate which is a conductor of a transfer body, and the spacer is applied to a patterned conductor (electrode) on the substrate. It is a conceptual diagram for demonstrating that a spacer is arranged on a pattern-like conductor (electrode) using a repulsive force and an attractive force by applying a voltage having a polarity opposite to the charging polarity. It is also a conceptual diagram for showing a case where a voltage is directly applied to the stage itself with the stage being in an electrically floating state. It is a cross-sectional conceptual diagram of a conventional TFT type liquid crystal display device.

Claims (8)

A method of manufacturing a liquid crystal display device in which liquid crystal is sealed between two substrates,
When arranging a spacer for keeping a gap between two substrates constant on a substrate for a liquid crystal display device by a transfer member,
The spacer having a coating layer chemically bonded to the surface of the substrate particle is disposed on the transfer body,
After contacting the liquid crystal display substrate and the spacer on the transfer body,
The spacer is transferred from the transfer body side to the liquid crystal display device substrate side,
A method of manufacturing a liquid crystal display device, wherein the spacer is disposed on the liquid crystal display device substrate. The liquid crystal display device substrate is heated and brought into contact with a spacer on the transfer body, the surface of the spacer is melted or softened, and the spacer is adhered to the liquid crystal display device substrate, thereby transferring the spacer to the transfer substrate. 2. The method of manufacturing a liquid crystal display device according to claim 1, wherein the spacer is disposed on the substrate for a liquid crystal display device by transferring from the body side to the liquid crystal display device substrate side. The spacer is arranged on a transfer body having an uneven surface, and only the spacer arranged on the convex portion of the transfer body is transferred from the transfer body side to the liquid crystal display device substrate side. 3. A method for producing a liquid crystal display device according to 2. The transfer member having a gap is used, and first, a spacer is attached on the transfer member, and the spacer is transferred from the transfer member side to the liquid crystal display substrate side. 4. A method for producing a liquid crystal display device according to 2 or 3. 5. The method of 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. A method of manufacturing a liquid crystal display device in which liquid crystal is sealed between two substrates,
When arranging a spacer for keeping a gap between two substrates constant on a substrate for a liquid crystal display device by a transfer member,
As the transfer body, a substrate in which a patterned conductor is formed on a substrate,
The charged spacers are arranged on the transfer body by applying a voltage to the patterned conductor in the transfer body,
The surface of the spacer is melted or softened by contacting the spacer arranged on the transfer body in a heated state of the liquid crystal display substrate.
Due to the difference in adhesion force due to melting or softening of the spacer, the spacer is transferred from the transfer body side to the liquid crystal display device substrate side,
A method of manufacturing a liquid crystal display device, wherein the spacer is disposed in a portion immediately below a black matrix of the liquid crystal display device substrate. A liquid crystal display device manufactured by the method for manufacturing a liquid crystal display device according to claim 1, 2, 3, 4, 5 or 6. A transfer body, which is used in the method for producing a liquid crystal display device according to claim 1, 2, 3, 4, 5 or 6.

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