JPH09281496A - Production of liquid crystal panel - Google Patents

Production of liquid crystal panel

Info

Publication number
JPH09281496A
JPH09281496A JP9231096A JP9231096A JPH09281496A JP H09281496 A JPH09281496 A JP H09281496A JP 9231096 A JP9231096 A JP 9231096A JP 9231096 A JP9231096 A JP 9231096A JP H09281496 A JPH09281496 A JP H09281496A
Authority
JP
Japan
Prior art keywords
glass substrate
liquid crystal
rubbing
crystal panel
mask plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9231096A
Other languages
Japanese (ja)
Inventor
Hideya Kawashima
秀弥 河島
Original Assignee
Matsushita Electron Corp
松下電子工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electron Corp, 松下電子工業株式会社 filed Critical Matsushita Electron Corp
Priority to JP9231096A priority Critical patent/JPH09281496A/en
Publication of JPH09281496A publication Critical patent/JPH09281496A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide a process for producing a liquid crystal panel which is free from defects and has stable quality by preventing the contamination and wear of rubbing treatment cloth in a rubbing treatment in a stage for producing the liquid crystal panel. SOLUTION: A mask plate 1 for masking the regions exclusive of a glass substrate 2 is installed on the glass substrate 2 to be subjected to the rubbing treatment of the liquid crystal panel and is subjected to the rubbing treatment. The rubbing treatment cloth simultaneously rubs the mask plate 1 and the glass substrate 2, by which the contamination of the glass substrate 2 on a transporting tray 3 and the wear of the rubbing treatment cloth by the influence of the glass edges are prevented. The liquid crystal panel which is free from the defects and has the stable quality is thus provided.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a method for manufacturing a liquid crystal panel. In particular, the present invention relates to a liquid crystal panel manufacturing method characterized by a glass substrate rubbing process in the liquid crystal panel manufacturing process.

[0002]

2. Description of the Related Art Conventionally, as means for orienting liquid crystal molecules in a liquid crystal panel, a polymer film such as polyimide (hereinafter referred to as a polymer film) for promoting molecular orientation and orientation regulating force on the surface of the glass substrate itself or the surface of the glass substrate. (Abbreviated as alignment film)
Surface of glass substrate coated with (surface with alignment film)
In order to determine the direction of the molecular alignment of liquid crystal molecules and the alignment control force, a rubbing treatment is performed in which the liquid crystal is rubbed with a cloth in a certain direction.

As a rubbing treatment method for a glass substrate constituting such a liquid crystal panel, a method of adhering and fixing the back surface of the rubbing treated surface of the glass substrate to treat the glass substrate alone, or a glass substrate carrying tray and a glass substrate There is known a method of simultaneously performing a rubbing process.

[0004]

However, the above-mentioned conventional rubbing method has the following problems. That is, when the glass substrate and the glass substrate transport tray are rubbed at the same time, dirt on the transport tray, which may be affected in the previous step, adheres to the cloth, and the effective treatment surface of the glass substrate (image display) is displayed. By redepositing within the surface used in (), the intended effect of aligning liquid crystal molecules may be lost, and streaky unevenness may be observed along the rubbing direction during liquid crystal display. There was a problem.

Furthermore, when a large amount of glass is rubbed with a cloth for rubbing treatment, the cloth is worn due to the effect of the glass edge, and the effect of aligning liquid crystal molecules in the effective surface is lowered, There has been a problem that a liquid crystal panel with poor display quality during liquid crystal display may be obtained.

In view of these points, the present invention solves the above-mentioned problems, improves stability and reproducibility during the rubbing process, and manufactures a liquid crystal panel having excellent display quality during liquid crystal display. The purpose is to provide a method.

[0007]

In order to solve the above-mentioned problems, the method of manufacturing a liquid crystal panel of the present invention comprises the steps of rubbing a glass substrate constituting the liquid crystal panel,
The rubbing process is characterized in that the rubbing process is performed with the mask plate masking a region other than the glass substrate during the rubbing process.

In the liquid crystal panel manufacturing method of the present invention, the rubbing treatment is performed with the height of the surface of the glass substrate on which the rubbing treatment is performed being equal to or less than the height of the mask plate surface. It is preferable.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION In the method for manufacturing a liquid crystal panel of the present invention, in a step of rubbing a glass substrate constituting the liquid crystal panel, a region other than the glass substrate is masked by a mask plate during the rubbing treatment. Since the rubbing treatment is performed, it has an effect of preventing contamination of the rubbing-treated cloth due to stains attached to a region other than the glass substrate such as a carrying tray, and preventing stains from reattaching to the effective treatment surface.

Further, according to a preferred embodiment of the present invention, the rubbing treatment is carried out in a state in which the height of the surface of the glass substrate on which the rubbing treatment is carried out is equal to or less than the height of the mask plate surface. It is possible to prevent the cloth etc. from hitting the edge of the glass substrate and being worn, reducing the variation in quality between lots of the rubbing treatment, and performing the liquid crystal molecule alignment effect within the effective treated surface of the glass substrate with good reproducibility. Has the effect of.

In the present invention, the glass substrate means not only the glass substrate itself, but also the glass substrate having the above-mentioned alignment film applied on the surface of the glass substrate. And, although not particularly limited, the latter is preferably used in an ordinary liquid crystal panel. In that case, the alignment film provided on the surface of the glass substrate is not particularly limited as long as it is used as an alignment film for a glass substrate of such a liquid crystal panel, but most preferably an alignment film made of polyimide. Membranes are used.

The cloth or the like used for the rubbing treatment is not particularly limited, but is usually woven fabric, knitted fabric,
Nonwoven fabric, absorbent cotton, felt, rubber, brush, etc. are used. An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

(Embodiment 1) FIG. 1 is a schematic perspective view showing a state in which a mask plate 1 is mounted on a glass substrate 2 during a rubbing process in a rubbing process used in an embodiment of a manufacturing method of the present invention. Is. As shown in FIG.
The mask plate 1 is arranged in a region around the glass substrate 2 arranged on the carrier tray 3. Mask plate 1 with rubbing cloth when rubbing
By simultaneously rubbing the glass substrate 2 with the glass substrate 2, a glass substrate having an effect of aligning liquid crystal molecules in the effective treated surface can be obtained. At this time, the mask plate 1 has a function of preventing dirt and the like attached to the carrying tray 3 in the previous step from being redeposited on the rubbing treated cloth, so that defects such as stripe unevenness may occur. A rubbing-free glass substrate for a liquid crystal panel is provided.

The mask plate 1 is made of metal,
The material is not particularly limited as long as it is a material such as plastic or ceramic that does not affect the processing effect of the rubbing-treated cloth.

Further, the number of the glass substrates 2 arranged in the holes of the mask plate 1 may be singular or divided into plural. When the number of glass substrates 2 arranged in the hole of the mask plate 1 is plural, it is preferable that the height of the glass substrate surface to be rubbed is substantially the same for each glass substrate. Further, it is preferable that the gap between the glass substrates is small.

(Embodiment 2) FIG. 2 is a sectional view showing a state in which a mask plate 1 is mounted on a glass substrate 2 during a rubbing process in a rubbing process used in an embodiment of the manufacturing method of the present invention. is there. As shown in FIG. 2, the glass substrate 2 placed on the carrying tray 3 is attached to the suction stage 4
The mask plate 1 is fixed outside the rubbing area around the glass substrate 2 and the height of the surface of the glass substrate 2 relative to the surface of the mask plate 1 to be subjected to the rubbing treatment is set to the mask plate. It is configured such that it is arranged on the same plane as the surface of 1 or at a height less than that (the latter state is shown in FIG. 2). At this time, the rubbing-treated cloth that is subjected to the rubbing treatment rubs only the surface of the mask plate 1 and the desired surface of the glass substrate 2 to be treated (effective treatment surface side), and the rubbing-treated cloth is worn by the edge of the glass substrate 2. Has the effect of preventing Therefore, it is possible to improve the risk that the effect of the rubbing process is lowered, reduce the variation in quality between lots of the rubbing process, and manufacture a liquid crystal panel of stable quality.

As long as the positional relationship of the surface of the glass substrate 2 with respect to the surface of the mask plate 1 is equal to or less than the same surface, the distance is not particularly limited as long as the effect of aligning liquid crystal molecules after the rubbing treatment is satisfied.

It should be noted that, in the above embodiment, FIG.
It is preferable that the upper edge 5 of the hole of the mask plate 1 has a small roundness, as shown in FIG. 3, because the wear of the cloth used for the rubbing process can be further reduced. Further, the distance of the gap 6 between the mask plate 1 and the glass substrate 2 is preferably as small as possible, and generally preferably 1 mm or less.

Although not shown in the above embodiment, if the effective processing surface of the glass substrate 2 (the surface within the range used for image display) can be rubbed, the mask plate 1
The size of the hole may be smaller than the size of the surface of the glass substrate 2, and the mask plate 1 may be placed on the glass substrate 2 and subjected to rubbing treatment.

[0020]

As described above, according to the liquid crystal panel manufacturing method of the present invention, the stability and reproducibility during the rubbing treatment in the rubbing treatment step are promoted, and the display quality of the image on the liquid crystal panel is impaired. In addition, it is possible to manufacture a liquid crystal panel having no display quality and stable display quality.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a state in which a mask plate is mounted on a glass substrate during a rubbing process in a rubbing process used in an embodiment of a manufacturing method of the present invention.

FIG. 2 is a cross-sectional view showing a state in which a mask plate is mounted on a glass substrate during a rubbing process in a rubbing process used in an embodiment of the manufacturing method of the present invention.

[Explanation of symbols]

 1 Mask Plate 2 Glass Substrate 3 Carrying Tray 4 Suction Stage 5 Upper Edge of Hole in Mask Plate 6 Gap between Mask Plate 1 and Glass Substrate 2

Claims (2)

[Claims]
1. A method of manufacturing a liquid crystal panel, wherein in the step of rubbing a glass substrate constituting a liquid crystal panel, the rubbing treatment is carried out with a mask plate masking a region other than the glass substrate during the rubbing treatment. Method.
2. The method of manufacturing a liquid crystal panel according to claim 1, wherein the height of the surface of the glass substrate on which the rubbing treatment is performed is equal to or less than the height of the surface of the mask plate.
JP9231096A 1996-04-15 1996-04-15 Production of liquid crystal panel Pending JPH09281496A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9231096A JPH09281496A (en) 1996-04-15 1996-04-15 Production of liquid crystal panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9231096A JPH09281496A (en) 1996-04-15 1996-04-15 Production of liquid crystal panel

Publications (1)

Publication Number Publication Date
JPH09281496A true JPH09281496A (en) 1997-10-31

Family

ID=14050837

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9231096A Pending JPH09281496A (en) 1996-04-15 1996-04-15 Production of liquid crystal panel

Country Status (1)

Country Link
JP (1) JPH09281496A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100880214B1 (en) * 2001-12-20 2009-01-28 엘지디스플레이 주식회사 Method For Rubbing An Alignment Layer Of Liquid Crystal Display Device
WO2015072360A1 (en) * 2013-11-15 2015-05-21 日本電気硝子株式会社 Glass film laminate and liquid crystal panel manufacturing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100880214B1 (en) * 2001-12-20 2009-01-28 엘지디스플레이 주식회사 Method For Rubbing An Alignment Layer Of Liquid Crystal Display Device
WO2015072360A1 (en) * 2013-11-15 2015-05-21 日本電気硝子株式会社 Glass film laminate and liquid crystal panel manufacturing method

Similar Documents

Publication Publication Date Title
US6731368B2 (en) Manufacturing process of liquid crystal cell for a small size liquid crystal display device
JP4678658B2 (en) Coating device
KR20140015262A (en) Method for producing masterboard alignment film and transfer printing plate and alignment solution
CN1885165B (en) Coating apparatus and method of fabricating liquid crystal display device using same
JP3278714B2 (en) Coating film forming equipment
US7016112B2 (en) Large scale polarizer and polarizer system employing it
DE10361375B4 (en) A method of forming an alignment layer for a liquid crystal display device and transfer film
DE10362373B3 (en) Substrate treatment method and device
US6985199B2 (en) LCD device and method for manufacturing the same
US20060098185A1 (en) Mask holder for irradiating UV-rays
JP4563349B2 (en) Printing apparatus for liquid crystal display element and pattern forming method using the same
US7048619B2 (en) Rubbing machine with realigning functions of rubbing cloth for use in LCD manufacturing process and rubbing method using the same
US7202931B2 (en) Liquid crystal display device and method of manufacturing the same comprising a plurality of seal patterns between a plurality of supporting patterns and a plurality of compensating patterns disposed below and aligned with the plurality of supporting patterns
KR100743039B1 (en) Liquid crystal display device
JP4566163B2 (en) Printing apparatus system and pattern forming method using the same
US20120013788A1 (en) Exposure method and exposure device
US6323925B1 (en) Apparatus for fabricating an orientation layer on LCD panels
US20010005257A1 (en) Liquid crystal display apparatus and method for manufacturing same
JP2004226974A (en) Non-rubbing liquid crystal orientation method
TWI454319B (en) Coating apparatus and method of forming coating layer using the same
KR100597287B1 (en) Substrate processing apparatus and method
JP3275202B2 (en) Thin film forming equipment
KR20000025003A (en) Polishing pad used for chemical and mechanical polishing of semiconductor substrate
JP4091372B2 (en) Substrate processing equipment
KR100778326B1 (en) An apparatus for processing a substrate, a method for processing a substrate and a method for forming a pattern