JP2006259542A - Method for manufacturing liquid crystal display panel - Google Patents

Method for manufacturing liquid crystal display panel Download PDF

Info

Publication number
JP2006259542A
JP2006259542A JP2005079690A JP2005079690A JP2006259542A JP 2006259542 A JP2006259542 A JP 2006259542A JP 2005079690 A JP2005079690 A JP 2005079690A JP 2005079690 A JP2005079690 A JP 2005079690A JP 2006259542 A JP2006259542 A JP 2006259542A
Authority
JP
Japan
Prior art keywords
optical film
liquid crystal
crystal display
display panel
substrate
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.)
Withdrawn
Application number
JP2005079690A
Other languages
Japanese (ja)
Inventor
Manabu Abiru
Makoto Nakahara
Naru Usukura
Koji Yamabuchi
真 中原
浩二 山渕
奈留 臼倉
学 阿比留
Original Assignee
Sharp Corp
シャープ株式会社
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 Sharp Corp, シャープ株式会社 filed Critical Sharp Corp
Priority to JP2005079690A priority Critical patent/JP2006259542A/en
Publication of JP2006259542A publication Critical patent/JP2006259542A/en
Withdrawn legal-status Critical Current

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To make final positioning precision of an optical film high by a method which is adaptive even when a reworking stage for the optical film is carried out. <P>SOLUTION: A method for manufacturing a liquid crystal display panel includes: a stage of superposing the optical film 2 larger in size than a stuck substrate 1, which is formed by sticking two substrates together across a liquid crystal layer, on the stuck substrate 1 and sticking the optical film so that the optical film projects from the outer periphery of the stuck substrate 1; and a stage of cutting an outer edge part of the optical film 2 after the sticking stage including a part projecting from the outer periphery of the stuck substrate 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for manufacturing a liquid crystal display panel.
  The liquid crystal display panel is manufactured by attaching an optical film to the main surface of a glass substrate in which two glass substrates are bonded to each other through a liquid crystal layer (hereinafter referred to as “bonded substrate”). One display portion of the liquid crystal display panel is also referred to as one “cell”.
  The step of attaching the optical film is generally performed on a bonded substrate that is already divided into cell units. As the optical film at this time, a polarizing plate having a size slightly smaller than the outer shape of the main surface of the glass substrate divided into cell units is used. This polarizing plate has a size that each side is shorter by about 1 to 10 mm than each side of the glass substrate. While aligning using such a polarizing plate, it is affixed on the glass substrate main surface of a cell unit.
  When pasting the optical film in this way, the dimensional accuracy when dividing the optical film, the bonding accuracy when pasting, and the splitting accuracy when dividing into cell units are considered as factors that cause deviation, The final positional accuracy of the optical film with respect to the glass substrate is ± 0.4 to 0.5 mm. However, in a small-sized liquid crystal display device, downsizing and narrowing of the cell are required, and it is required to increase the positional accuracy of the optical film.
As a technique for improving the accuracy, Japanese Patent Laid-Open No. 10-282464 (Patent Document 1) discloses a method of performing alignment by forming alignment marks on a liquid crystal panel and an optical film. In recent years, as disclosed in Japanese Patent Application Laid-Open No. 2004-4636 (Patent Document 2), an optical film is bonded before the mother glass is divided, and then the optical film and the glass are divided. A liquid crystal panel manufacturing method has also been proposed. According to such a method, it is possible to increase the accuracy as compared with the conventional manufacturing method.
Japanese Patent Laid-Open No. 10-282464 Japanese Patent Laid-Open No. 2004-4636
  When the method disclosed in Patent Document 1 is used, a process of attaching an alignment mark to each optical film is required, which is not practical.
  If the method disclosed in Patent Document 2 is adopted, the positional accuracy of the optical film is improved. However, when the optical film is reworked, the same accuracy cannot be obtained. “Rework” of optical film means that if an abnormality occurs such as when a foreign object is caught between the optical film and the glass substrate when the optical film is applied, the optical film is peeled off and a new optical film is applied again. For example, Japanese Patent Laid-Open No. 2001-242448 discloses an example. If the same accuracy cannot be obtained in the rework process, the accuracy of the entire product group cannot be guaranteed. Since the optical film is likely to shrink due to temperature and humidity, it is difficult to secure a positional accuracy equivalent to the original accuracy of the technique of Patent Document 2 on the optical film re-attached by the rework process.
  Therefore, the present invention has an object to provide a method for manufacturing a liquid crystal display panel in which the final positional accuracy of the optical film is sufficiently high by a method applicable even when the rework process of the optical film is performed. And
  In order to achieve the above object, the method for manufacturing a liquid crystal display panel according to the present invention is larger than the above-mentioned bonded substrate with respect to a bonded substrate in which two substrates are bonded to each other through a liquid crystal layer. A step of overlapping and pasting the optical film of size so as to protrude from the outer periphery of the bonded substrate, and an outer edge portion including a portion protruding from the outer periphery of the bonded substrate in the optical film after the bonding step Cutting off.
  In the above-mentioned invention, preferably, the bonded substrate is a substrate that has been peeled off after some optical film has been pasted.
  Preferably, in the above invention, in the cutting step, the bonded substrate is arranged in a frame-shaped jig so that the upper surfaces of both are substantially flush with each other, and the blade is placed on the upper surface of the bonded substrate. This is done by running.
  According to the present invention, since the optical film is cut after being attached, an error due to a shift in attaching can be eliminated, and the final positional accuracy of the optical film can be improved. Since the present invention can be applied even when the rework process of the optical film is performed, the final positional accuracy of the optical film can be sufficiently increased even when the rework process is performed. .
(Embodiment 1)
(Production method)
With reference to FIGS. 1-3, the manufacturing method of the liquid crystal display panel in Embodiment 1 based on this invention is demonstrated. As shown in FIG. 1, the manufacturing method includes a step of attaching an optical film 2 having a size larger than that of the bonded substrate 1 to the bonded substrate 1 so as to protrude from the outer periphery of the bonded substrate 1. . The bonded substrate 1 is obtained by bonding two substrates to each other through a liquid crystal layer. The optical film 2 may be a polarizing plate, for example. Further, as shown in FIG. 2, the manufacturing method includes a step of cutting an outer edge portion including a portion protruding from the outer periphery of the bonded substrate 1 in the optical film 2 after the attaching step. This cutting process is performed by dividing the optical film 2 along the cutting line 3 indicated by a one-dot chain line in FIG. 2 and removing the outside. In this way, a liquid crystal display panel 4 as shown in FIG. 3 is obtained.
(Action / Effect)
If it is the manufacturing method in this Embodiment, since the optical film 2 will be cut | disconnected after sticking, the error by the shift | offset | difference at the time of sticking can be prevented. Therefore, the positional accuracy of the optical film on the glass substrate can be increased. Further, since it can be performed in a state of being divided into individual liquid crystal display panel sizes instead of being performed in the state of the mother bonded substrate, it can be applied even when the optical film rework step is performed. In the case where the bonded substrate used in the description of the manufacturing method in the present embodiment is a substrate that has been peeled off after applying some optical film, that is, when the bonded substrate is a rework target, the effect of the present invention is more effective. Since it becomes remarkable, it is preferable.
  For cutting the optical film 2, a known technique as disclosed in Japanese Patent Application Laid-Open Nos. 2003-335536 and 2004-230502 can be used. By carrying out like this, it is possible to cut only the optical film stuck on the surface of the glass substrate.
(jig)
In a liquid crystal display panel, when a so-called “narrowing frame” in which a frame-shaped blank portion (also referred to as “frame portion” or “frame region”) that is not covered by the optical film on the periphery of the glass substrate becomes narrower, When trying to sever with a cutter as described in Japanese Patent Application Laid-Open No. 2004-230502, it is not possible to ensure a sufficient area for hitting the bottom surface of the cutter. Therefore, for example, it is preferable to use a frame-shaped jig 5 as shown in FIG. The jig 5 has a receiving portion 6 for fitting the bonded substrate 1. The receiving part 6 may be a through hole or a simple recess. The shape and size of the receiving portion 6 correspond to the bonded substrate 1. As shown in FIG. 5, the laminated substrate 1 is fitted into the receiving portion 6 of the jig 5 so that the upper surface of the jig 5 and the upper surface of the laminated substrate 1 are substantially flush with each other, and the optical film 2 is formed from above these. Paste. Alternatively, the optical film 2 may be attached to the bonded substrate 1 and then fitted into the jig 5. As shown in FIG. 6, the cutting step is performed by running a blade (not shown) along the cutting line 3 on the upper surface of the bonded substrate 1 and the jig 5. That is, in the cutting step, the laminated substrate 1 is arranged in the frame-shaped jig 5 so that the upper surfaces of the two are substantially flush with each other, and the blade is moved on the upper surface of the bonded substrate 1. Do. By doing in this way, the bottom part of a cutter can be pressed so that it may straddle both the bonding board | substrate 1 and the jig | tool 5, and a cutter can be driven stably. As a result, even if the frame portion has a narrow design, only the optical film 2 can be correctly divided. After the division, unnecessary portions of the optical film 2 may be peeled off and the liquid crystal display panel may be taken out from the jig 5.
  In addition, the said embodiment disclosed this time is an illustration in all the points, Comprising: It is not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and includes all modifications within the scope and meaning equivalent to the terms of the claims.
It is explanatory drawing of the process of affixing among the manufacturing methods of the liquid crystal display panel in Embodiment 1 based on this invention. It is explanatory drawing of the process cut out among the manufacturing methods of the liquid crystal display panel in Embodiment 1 based on this invention. It is a perspective view of the liquid crystal display panel obtained by the manufacturing method of the liquid crystal display panel in Embodiment 1 based on this invention. It is a perspective view of the jig | tool which can be used with the manufacturing method of the liquid crystal display panel in Embodiment 1 based on this invention. It is 1st explanatory drawing of use of the jig | tool in the manufacturing method of the liquid crystal display panel in Embodiment 1 based on this invention. It is the 2nd explanatory view of use of a jig in a manufacturing method of a liquid crystal display panel in Embodiment 1 based on the present invention.
Explanation of symbols
  DESCRIPTION OF SYMBOLS 1 Laminated substrate, 2 Optical film, 3 Cutting line, 4 Liquid crystal display panel, 5 Jig, 6 Accepting part.

Claims (3)

  1. An optical film having a size larger than that of the bonded substrate is stacked and bonded to a bonded substrate obtained by bonding two substrates to each other via a liquid crystal layer so as to protrude from the outer periphery of the bonded substrate. Process,
    The manufacturing method of a liquid crystal display panel including the process of cut | disconnecting the outer edge part including the part which has protruded from the outer periphery of the said bonding board | substrate among the said optical films after the said sticking process.
  2.   The method for manufacturing a liquid crystal display panel according to claim 1, wherein the bonded substrate is one in which an optical film is once pasted and then peeled off.
  3.   The step of cutting is performed by placing the bonded substrate in a frame-shaped jig so that the upper surfaces of both are substantially flush with each other, and running the blade on the upper surface of the bonded substrate. The manufacturing method of the liquid crystal display panel of Claim 1 or 2.
JP2005079690A 2005-03-18 2005-03-18 Method for manufacturing liquid crystal display panel Withdrawn JP2006259542A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005079690A JP2006259542A (en) 2005-03-18 2005-03-18 Method for manufacturing liquid crystal display panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005079690A JP2006259542A (en) 2005-03-18 2005-03-18 Method for manufacturing liquid crystal display panel

Publications (1)

Publication Number Publication Date
JP2006259542A true JP2006259542A (en) 2006-09-28

Family

ID=37098854

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005079690A Withdrawn JP2006259542A (en) 2005-03-18 2005-03-18 Method for manufacturing liquid crystal display panel

Country Status (1)

Country Link
JP (1) JP2006259542A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008288237A (en) * 2007-05-15 2008-11-27 Lintec Corp Sheet pasting apparatus, sheet cutting method, and wafer grinding method
CN102200656A (en) * 2010-03-26 2011-09-28 三星钻石工业股份有限公司 Producing method of box for liquid crystal display device
WO2013151035A1 (en) * 2012-04-03 2013-10-10 住友化学株式会社 Optical display device production system
WO2014109198A1 (en) * 2013-01-10 2014-07-17 住友化学株式会社 Apparatus for manufacturing optical display device, and system for producing optical display device
WO2014148568A1 (en) * 2013-03-21 2014-09-25 住友化学株式会社 System and method for producing optical display devices
JP5618283B2 (en) * 2012-02-29 2014-11-05 住友化学株式会社 Optical display device production system and optical display device production method
WO2014185099A1 (en) * 2013-05-17 2014-11-20 住友化学株式会社 System for manufacturing optical display device
JP2014224911A (en) * 2013-05-16 2014-12-04 住友化学株式会社 Optical display device production system, and production method
WO2014208526A1 (en) * 2013-06-24 2014-12-31 住友化学株式会社 Production system for optical display device
WO2015030141A1 (en) * 2013-08-30 2015-03-05 住友化学株式会社 Production method for laminated optical member
WO2015030158A1 (en) * 2013-08-30 2015-03-05 住友化学株式会社 Production method for laminated optical member
JP5793821B2 (en) * 2012-10-12 2015-10-14 住友化学株式会社 Detecting device, optical member bonded body manufacturing apparatus, and optical member bonded body manufacturing method
CN105190735A (en) * 2013-05-16 2015-12-23 住友化学株式会社 Bonded optical member manufacturing system, manufacturing method, and recording medium
CN104204923B (en) * 2012-04-11 2017-03-08 住友化学株式会社 The production system of optical display means

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008288237A (en) * 2007-05-15 2008-11-27 Lintec Corp Sheet pasting apparatus, sheet cutting method, and wafer grinding method
CN102200656A (en) * 2010-03-26 2011-09-28 三星钻石工业股份有限公司 Producing method of box for liquid crystal display device
JP2011203627A (en) * 2010-03-26 2011-10-13 Mitsuboshi Diamond Industrial Co Ltd Method for manufacturing cell for liquid crystal display device
TWI461783B (en) * 2010-03-26 2014-11-21 Mitsuboshi Diamond Ind Co Ltd Method of fabricating liquid crystal display device
CN104145211B (en) * 2012-02-29 2017-03-29 住友化学株式会社 The production method of the production system and optical display means of optical display means
JP5618283B2 (en) * 2012-02-29 2014-11-05 住友化学株式会社 Optical display device production system and optical display device production method
CN104145211A (en) * 2012-02-29 2014-11-12 住友化学株式会社 Optical display device production system and optical display device production method
WO2013151035A1 (en) * 2012-04-03 2013-10-10 住友化学株式会社 Optical display device production system
CN104204918A (en) * 2012-04-03 2014-12-10 住友化学株式会社 Optical display device production system
CN104204923B (en) * 2012-04-11 2017-03-08 住友化学株式会社 The production system of optical display means
JPWO2014057881A1 (en) * 2012-10-12 2016-09-05 住友化学株式会社 Detecting device, optical member bonded body manufacturing apparatus, and optical member bonded body manufacturing method
JP5793821B2 (en) * 2012-10-12 2015-10-14 住友化学株式会社 Detecting device, optical member bonded body manufacturing apparatus, and optical member bonded body manufacturing method
TWI578060B (en) * 2013-01-10 2017-04-11 住友化學股份有限公司 Manufacturing apparatus for optical display device and production system for optical display device
CN104854502B (en) * 2013-01-10 2017-08-15 住友化学株式会社 The manufacture device of optical display means and the production system of optical display means
KR101993029B1 (en) 2013-01-10 2019-06-25 스미또모 가가꾸 가부시키가이샤 Apparatus for manufacturing optical display device, and system for producing optical display device
JP5828972B2 (en) * 2013-01-10 2015-12-09 住友化学株式会社 Optical display device manufacturing apparatus and optical display device production system
CN104854502A (en) * 2013-01-10 2015-08-19 住友化学株式会社 Apparatus for manufacturing optical display device, and system for producing optical display device
WO2014109198A1 (en) * 2013-01-10 2014-07-17 住友化学株式会社 Apparatus for manufacturing optical display device, and system for producing optical display device
KR20150104560A (en) * 2013-01-10 2015-09-15 스미또모 가가꾸 가부시키가이샤 Apparatus for manufacturing optical display device, and system for producing optical display device
CN104969281A (en) * 2013-03-21 2015-10-07 住友化学株式会社 System and method for producing optical display devices
TWI672216B (en) * 2013-03-21 2019-09-21 日商住友化學股份有限公司 Production system and production method for optical display device
WO2014148568A1 (en) * 2013-03-21 2014-09-25 住友化学株式会社 System and method for producing optical display devices
CN105190735A (en) * 2013-05-16 2015-12-23 住友化学株式会社 Bonded optical member manufacturing system, manufacturing method, and recording medium
CN105190735B (en) * 2013-05-16 2017-12-08 住友化学株式会社 Manufacture system, manufacture method and the recording medium of optical component fitting body
JP2014224911A (en) * 2013-05-16 2014-12-04 住友化学株式会社 Optical display device production system, and production method
WO2014185099A1 (en) * 2013-05-17 2014-11-20 住友化学株式会社 System for manufacturing optical display device
JPWO2014185099A1 (en) * 2013-05-17 2017-02-23 住友化学株式会社 Optical display device production system
WO2014208526A1 (en) * 2013-06-24 2014-12-31 住友化学株式会社 Production system for optical display device
JP2015006699A (en) * 2013-06-24 2015-01-15 住友化学株式会社 Optical display device production system
KR20160022297A (en) * 2013-06-24 2016-02-29 스미또모 가가꾸 가부시키가이샤 Production system for optical display device
CN105209965A (en) * 2013-06-24 2015-12-30 住友化学株式会社 Production system for optical display device
CN105209965B (en) * 2013-06-24 2017-12-12 住友化学株式会社 The production system of optical display means
KR102159417B1 (en) * 2013-06-24 2020-09-23 스미또모 가가꾸 가부시키가이샤 Production system for optical display device
WO2015030141A1 (en) * 2013-08-30 2015-03-05 住友化学株式会社 Production method for laminated optical member
WO2015030158A1 (en) * 2013-08-30 2015-03-05 住友化学株式会社 Production method for laminated optical member

Similar Documents

Publication Publication Date Title
US8557637B2 (en) Method for fabricating the flexible electronic device
KR100563896B1 (en) Liquid crystal panel, method and device for manufacturing liquid crystal panel, and polarizing plate stamping device
JP2597447B2 (en) Method for manufacturing semiconductor device
EP2894689B1 (en) Method for manufacturing flexible display device
EP1491309B1 (en) Parting method for fragile material substrate and parting device using the method
US5904548A (en) Trench scribe line for decreased chip spacing
US6864947B2 (en) Method of fabricating liquid crystal display substrate and the same
US7397529B1 (en) Liquid crystal displays
JP4187543B2 (en) Liquid crystal display panel cutting apparatus and cutting method using the same
JP5153383B2 (en) Manufacturing method of liquid crystal display device
US20090098712A1 (en) Substrate dividing method
KR20050052168A (en) Method of cutting liquid crystal display panel
US7405137B2 (en) Method of dicing a semiconductor substrate into a plurality of semiconductor chips by forming two cutting grooves on one substrate surface and forming one cutting groove on an opposite substrate surface that overlaps the two cutting grooves
JP2004151551A (en) Electro-optical panel, holding structure of electro-optical panel, electro-optical device, method of manufacturing electro-optical panel and method of manufacturing electro-optical device
JP2004259846A (en) Separation method for element formed on substrate
CN103165532B (en) Method of manufacturing semiconductor element
JP2008116969A (en) Liquid crystal panel, and device for manufacturing the same
JP4565977B2 (en) Film peeling method and film peeling apparatus
JP3436240B2 (en) Flat panel display
KR20160071369A (en) Film formation mask and production method therefor
JP2004070106A (en) Method for manufacturing liquid crystal display panel
US10186490B2 (en) Manufacturing method of display panel and bonding cutting device
US8482856B2 (en) Optical element array sheet, display device, and fabrication method for same
JP2008039866A (en) Liquid crystal display and method of manufacturing the liquid crystal display
WO2003040049A1 (en) Method and device for parting glass substrate, liquid crystal panel, and liquid crystal panel manufacturing device

Legal Events

Date Code Title Description
A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 20080603