JP2001022286A - Production of plane display device - Google Patents

Production of plane display device

Info

Publication number
JP2001022286A
JP2001022286A JP11195820A JP19582099A JP2001022286A JP 2001022286 A JP2001022286 A JP 2001022286A JP 11195820 A JP11195820 A JP 11195820A JP 19582099 A JP19582099 A JP 19582099A JP 2001022286 A JP2001022286 A JP 2001022286A
Authority
JP
Japan
Prior art keywords
polarizing plate
display cell
rollers
pair
optical film
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
JP11195820A
Other languages
Japanese (ja)
Inventor
Masafumi Tachikawa
雅史 立川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP11195820A priority Critical patent/JP2001022286A/en
Publication of JP2001022286A publication Critical patent/JP2001022286A/en
Pending legal-status Critical Current

Links

Landscapes

  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

PROBLEM TO BE SOLVED: To make it possible to stick an flexible optical film to a display cell by forming the shape of a roller existing on a side where the optical film is stuck to a potbelly shape. SOLUTION: The roller 16 on the side in contact with a flexible film-like polarizing plate 12 of a pair of the rollers 14 and 16 to be used for a stage for sticking the polarizing plate 12 to the display cell 10 is formed to the potbelly shape bulging increasingly toward the center. The display cell 10 is formed by bonding glass substrates 18 and 20 which are an array substrate and a counter substrate and sealing liquid crystals therein and is transported between a pair of the rollers 14 and 16 by a panel stage. The polarizing plate 12 is taken out of a polarizing plate hopper and a release tape is peeled off and then the plate is sucked and held by a polarizing plate sticking head and is transported toward the rollers 14 and 16. The display cell 10 and the polarizing plate 12 are simultaneously passed between a pair of the rollers 14 and 16 and the polarizing plate 12 is stuck to the surface of the display cell 10 by the pressure of a pair of the rollers 14 and 16.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、液晶表示装置等の
平面表示装置において、表示セルの表面に偏光板等の光
学フィルムを貼り付ける工程の製造方法に関するもので
ある。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a flat display device such as a liquid crystal display device in a step of attaching an optical film such as a polarizing plate to the surface of a display cell.

【0002】[0002]

【従来の技術】液晶表示装置に用いられる表示セルの表
面及び裏面には、光学フィルムとして例えばフレキシブ
ルなフィルム状の偏光板が貼り付けられている。
2. Description of the Related Art A polarizer in the form of a flexible film, for example, is attached as an optical film to the front and back surfaces of a display cell used in a liquid crystal display device.

【0003】図3に示すように、従来、表示セル100
に偏光板102を貼り付ける方法として、一対のローラ
104,106の間に表示セル100と偏光板102を
通して、一対のローラ104,106の加圧力により偏
光板102を貼り付けていた。
[0003] As shown in FIG.
As a method of attaching the polarizing plate 102 to the substrate, the display cell 100 and the polarizing plate 102 are passed between the pair of rollers 104 and 106, and the polarizing plate 102 is attached by the pressing force of the pair of rollers 104 and 106.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、上記の
ような貼付工程において、偏光板102を表示セル10
0に貼り付けた場合には、表示不良(ギャップ斑)が
0.5%程度発生していた。
However, in the above attaching step, the polarizing plate 102 is connected to the display cell 10.
In the case of sticking to 0, display defects (gap unevenness) occurred about 0.5%.

【0005】すなわち、図4に示すように、表示セル1
00の周辺に沿って部分的かつ過度に圧力がかかり、面
内圧力分布が均一でなくなり、これによりギャップ斑が
発生するものである。図4においては、斜線部分の領域
がそのギャップ斑の範囲を示している。
That is, as shown in FIG.
Pressure is applied partially and excessively along the periphery of 00, and the in-plane pressure distribution becomes non-uniform, thereby causing gap unevenness. In FIG. 4, the hatched area indicates the range of the gap spot.

【0006】そこで、本発明は上記問題点に鑑み、ギャ
ップ斑が発生しないように偏光板等のフレキシブルな光
学フィルムを表示セルに貼り付けることができる平面表
示装置の製造方法を提供するものである。
In view of the above problems, the present invention provides a method of manufacturing a flat panel display device which can attach a flexible optical film such as a polarizing plate to a display cell so that gap unevenness does not occur. .

【0007】[0007]

【課題を解決するための手段】本発明の平面表示装置の
製造方法は、平面表示装置の表示セルと光学フィルムと
を一対のローラの間を通して、前記一対のローラ間の押
圧力によって前記表示セルの表面に前記光学フィルムを
貼付ける工程における平面表示装置の製造方法におい
て、前記一対のローラの中で前記光学フィルムを貼付け
る側に位置するローラの形状を、太鼓腹状にしたもので
ある。
According to a method of manufacturing a flat display device according to the present invention, a display cell of a flat display device and an optical film are passed between a pair of rollers, and the display cell is pressed by a pressing force between the pair of rollers. In the method for manufacturing a flat panel display in the step of attaching the optical film to the surface of the above, the shape of a roller located on the side where the optical film is attached, of the pair of rollers, is formed into a belly shape.

【0008】本出願の発明者は、上記問題点を解決する
ため、一対のローラの押圧力を上げていくと、上記した
ように表示セルの端部近傍にギャップ斑が顕著に発生す
ることを確認した。これは、表示セルとローラとが接触
した際に、ローラの表示セルの端の部分より押圧力が変
化し、その端の部分よりも若干内側の部分に過度の押圧
力がかかっているものであることを発見した。
In order to solve the above problem, the inventor of the present application has found that when the pressing force of the pair of rollers is increased, gap spots are noticeably generated near the end of the display cell as described above. confirmed. This is because when the display cell comes into contact with the roller, the pressing force changes from the end portion of the display cell of the roller, and excessive pressing force is applied to a portion slightly inside the end portion of the display cell. I found something.

【0009】そこで、本発明者はこの過度の押圧力を解
消するため、請求項1で記載したように一対のローラの
うち光学フィルムを貼付ける側のローラの形状を円筒形
でなく、太鼓腹状にしたものである。
Therefore, in order to eliminate the excessive pressing force, the present inventor has changed the shape of the roller of the pair of rollers to which the optical film is adhered, instead of the cylindrical shape, as described in claim 1 above. It is in the shape.

【0010】これにより、表示セルの端部内側部分に過
度の押圧力がかかることがなく、面内圧力分布が均一と
なって、表示不良が発生することがない。
As a result, no excessive pressing force is applied to the inside of the end portion of the display cell, the in-plane pressure distribution becomes uniform, and the display failure does not occur.

【0011】[0011]

【発明の実施の形態】以下、本発明の一実施例を図1及
び図2に基づいて説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

【0012】図1は、表示セル10にフレキシブルなフ
ィルム状の偏光板12を貼り付ける工程に使用される一
対のローラ14,16である。これらローラ14,16
のうち、偏光板12と接触する側のローラ16は、図1
に示すように中央部ほど膨らんだ太鼓腹形状となってい
る。ローラ16の太鼓腹の形状としては、ローラ16の
直径を40mmとした場合に、中央部分の直径を両側部
分の直径よりも0.1〜0.2mm程度大きく形成する
ものである。
FIG. 1 shows a pair of rollers 14 and 16 used in a step of attaching a flexible film-like polarizing plate 12 to a display cell 10. These rollers 14, 16
Of the rollers 16 on the side that comes into contact with the polarizing plate 12,
As shown in the figure, it has a belly shape bulging toward the center. The shape of the drum belly of the roller 16 is such that when the diameter of the roller 16 is 40 mm, the diameter of the central portion is formed to be about 0.1 to 0.2 mm larger than the diameter of both sides.

【0013】そして、他方のローラ14は従来と同様に
円柱形となっている。なお、ローラ14,16ともにゴ
ム等の弾性体によって形成されている。
The other roller 14 has a cylindrical shape as in the prior art. The rollers 14 and 16 are both formed of an elastic body such as rubber.

【0014】この一対のローラ14,16を使用して偏
光板12を表示セル10に貼付け工程について説明す
る。
A process of attaching the polarizing plate 12 to the display cell 10 using the pair of rollers 14 and 16 will be described.

【0015】表示セル10は、アレイ基板であるガラス
基板18と対向基板であるガラス基板20を張り合わせ
てその内部に液晶を封入したものである。表示セル10
は、パネルステージに吸着保持されている。
The display cell 10 is formed by bonding a glass substrate 18 as an array substrate and a glass substrate 20 as an opposite substrate and sealing liquid crystal therein. Display cell 10
Are held by suction on the panel stage.

【0016】この貼付工程に行く前に表示セル10の表
面のゴミ、ガラス粉等の除去を行っておく。そして、パ
ネルステージによって表示セル10を一対のローラ1
4,16の間に搬送する。
Before going to the sticking step, dust, glass powder and the like on the surface of the display cell 10 are removed. Then, the display cell 10 is moved to the pair of rollers 1 by the panel stage.
It is transported between 4,16.

【0017】偏光板12は、入射光に対して特定の偏光
成分のみを透過させる機能を有する光学部材であって、
厚さ0.3mm程度のフィルムより構成されている。こ
の偏光板12は、偏光板ホッパに複数枚積み重ねて置い
ておく。この場合に偏光板12の表面には剥離テープが
貼り付けられている。この剥離テープは、偏光板12の
表面に粘着面を出すため、セパレートフィルムを接着さ
せてはぎ取るためのテープである。
The polarizing plate 12 is an optical member having a function of transmitting only a specific polarized light component to incident light,
It is composed of a film having a thickness of about 0.3 mm. A plurality of the polarizing plates 12 are stacked and placed on a polarizing plate hopper. In this case, a release tape is attached to the surface of the polarizing plate 12. This peeling tape is a tape for bonding and peeling a separate film to give an adhesive surface to the surface of the polarizing plate 12.

【0018】1枚の偏光板12は、偏光板ホッパーから
取り出され、剥離テープを剥がして、偏光板貼付ヘッド
によって吸引保持されて、ローラ14,16の方向に搬
送される。
The single polarizing plate 12 is taken out of the polarizing plate hopper, the peeling tape is peeled off, and is held by suction by the polarizing plate attaching head, and is conveyed in the direction of the rollers 14 and 16.

【0019】この表示セル10と偏光板12がローラ1
4,16の位置に搬送された状態を図2で示している。
表示セル10はほぼ水平状態に搬送し、偏光板12は斜
め下方からローラ14,16の間を通過させる。
The display cell 10 and the polarizing plate 12 are formed by the roller 1
FIG. 2 shows a state where the sheet is conveyed to the positions 4 and 16.
The display cell 10 is transported in a substantially horizontal state, and the polarizing plate 12 is passed between the rollers 14 and 16 from obliquely below.

【0020】一対のローラ14,16の間を表示セル1
0と偏光板12を同時に通過させ、一対のローラ14,
16の圧力によって表示セル10の表面に偏光板12を
貼り付ける。
The display cell 1 is located between the pair of rollers 14 and 16.
0 and the polarizing plate 12 at the same time, and a pair of rollers 14,
The polarizing plate 12 is attached to the surface of the display cell 10 by the pressure of 16.

【0021】この場合に、ローラ16は太鼓腹形状とな
っているため、中央部分では従来と同様の押圧力が働
き、表示セル10の両側の端部においては従来よりもそ
の押圧力が少なくなるため、表示セル両側の内側近傍に
過度の押圧力がかかることがない。そのため、面内圧力
が均一となり、偏光板12を表示セル10に貼り付けた
場合に表示斑が発生することがない。
In this case, since the roller 16 has a belly shape, the same pressing force acts on the central portion as in the prior art, and the pressing force on the both ends of the display cell 10 is smaller than in the conventional case. Therefore, no excessive pressing force is applied to the vicinity of the inside on both sides of the display cell. Therefore, the in-plane pressure becomes uniform, and when the polarizing plate 12 is adhered to the display cell 10, display unevenness does not occur.

【0022】以上の貼付け工程においては、太鼓腹状の
ローラ16を使用することにより表示セル10と偏光板
12との面内圧力分布が均一となり、表示斑が発生する
ことがない。
In the above-mentioned sticking step, the in-plane pressure distribution between the display cell 10 and the polarizing plate 12 becomes uniform by using the bellows-like roller 16, and the display unevenness does not occur.

【0023】上述した実施例においては、表示セル10
に偏光板12を貼付ける場合を例にとって説明したが、
この偏光板以外にフレキシブルな延伸フィルム、ディス
コテック液晶材料などを含む光学位相差板等の光学フィ
ルムの貼付けにも、この発明は好適に使用できる。
In the embodiment described above, the display cell 10
Although the case where the polarizing plate 12 is attached to the above has been described as an example,
In addition to the polarizing plate, the present invention can be suitably used for attaching an optical film such as an optical retardation plate containing a flexible stretched film or a discotech liquid crystal material.

【0024】[0024]

【発明の効果】以上により本発明の平面表示装置の製造
方法であると、太鼓腹状のローラを使用することにより
表示セルと光学フィルムの面内圧力分布が均一となり、
表示不良が発生することがない。
As described above, according to the method of manufacturing the flat display device of the present invention, the in-plane pressure distribution of the display cell and the optical film becomes uniform by using the belly roller,
No display failure occurs.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の一実施例を示す一対のローラの間を表
示セルと偏光板が通過している状態の正面図である。
FIG. 1 is a front view showing a state in which a display cell and a polarizing plate pass between a pair of rollers according to an embodiment of the present invention.

【図2】同じく側面図である。FIG. 2 is a side view of the same.

【図3】従来の一対のローラの間を表示セルと偏光板が
通過している状態の正面図である。
FIG. 3 is a front view of a conventional state in which a display cell and a polarizing plate pass between a pair of rollers.

【図4】同じく平面図である。FIG. 4 is a plan view of the same.

【符号の説明】[Explanation of symbols]

10 表示セル 12 偏光板 14 ローラ 16 ローラ Reference Signs List 10 display cell 12 polarizing plate 14 roller 16 roller

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】平面表示装置の表示セルと光学フィルムと
を一対のローラの間を通して、前記一対のローラ間の押
圧力によって前記表示セルの表面に前記光学フィルムを
貼付ける工程における平面表示装置の製造方法におい
て、 前記一対のローラの中で前記光学フィルムを貼付ける側
に位置するローラの形状を、太鼓腹状にしたことを特徴
とする平面表示装置の製造方法。
1. A flat display device according to claim 1, wherein the display cell and the optical film of the flat display device are passed between a pair of rollers, and the optical film is attached to the surface of the display cell by a pressing force between the pair of rollers. The method of manufacturing a flat display device, wherein a shape of a roller located on a side where the optical film is stuck among the pair of rollers is a belly shape.
JP11195820A 1999-07-09 1999-07-09 Production of plane display device Pending JP2001022286A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11195820A JP2001022286A (en) 1999-07-09 1999-07-09 Production of plane display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11195820A JP2001022286A (en) 1999-07-09 1999-07-09 Production of plane display device

Publications (1)

Publication Number Publication Date
JP2001022286A true JP2001022286A (en) 2001-01-26

Family

ID=16347552

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11195820A Pending JP2001022286A (en) 1999-07-09 1999-07-09 Production of plane display device

Country Status (1)

Country Link
JP (1) JP2001022286A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009075414A (en) * 2007-09-21 2009-04-09 Totoku Electric Co Ltd Liquid crystal display device and method for manufacturing the same
WO2010074194A1 (en) * 2008-12-25 2010-07-01 日東電工株式会社 Method for manufacturing liquid crystal display device and apparatus for manufacturing liquid crystal display device
US20130050822A1 (en) * 2010-02-10 2013-02-28 Johnson Controls Automotive Electronics Gmbh Display element with polarizing film for a display unit in a vehicle
CN111443508A (en) * 2020-04-28 2020-07-24 深圳市华星光电半导体显示技术有限公司 Polaroid attaching device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009075414A (en) * 2007-09-21 2009-04-09 Totoku Electric Co Ltd Liquid crystal display device and method for manufacturing the same
WO2010074194A1 (en) * 2008-12-25 2010-07-01 日東電工株式会社 Method for manufacturing liquid crystal display device and apparatus for manufacturing liquid crystal display device
US20130050822A1 (en) * 2010-02-10 2013-02-28 Johnson Controls Automotive Electronics Gmbh Display element with polarizing film for a display unit in a vehicle
CN111443508A (en) * 2020-04-28 2020-07-24 深圳市华星光电半导体显示技术有限公司 Polaroid attaching device

Similar Documents

Publication Publication Date Title
KR101538823B1 (en) Manufacturing method of liquid crystal display device
JP5134523B2 (en) Optical film pasting apparatus, optical film pasting method, and display panel manufacturing method
TWI467294B (en) A method for laminating an adhesive layer
JPH0886993A (en) Jig for transporting substrate and production of liquid crystal display element by using the same
JP2013095123A (en) Method and device for laminating optical sheet, and adhesive sheet used for the same
WO2022088431A1 (en) Bonding method for touch-control display panel, touch-control display panel, and electronic device
JP2008090158A (en) Method of sticking sheet-like optical member and device of sticking sheet-like optical member
JPH10208314A (en) Manufacture of optical disk, and device used for the same
JP2010008525A (en) Display device and method of manufacturing the same
JPH07105781A (en) Transparent touch panel structure
JP2001022286A (en) Production of plane display device
JP2001242448A (en) Method of removing polarizing plate and method of manufacturing liquid crystal device by using the method
JP2017083595A (en) Curved liquid crystal display, and manufacturing method of liquid crystal panel
JP2002023143A (en) Device for removing foreign matter for liquid crystal device and method therefor
JP2002357817A (en) Polarizing plate sticking device
JP3684833B2 (en) Manufacturing method of liquid crystal panel
JP2601133B2 (en) Method and apparatus for manufacturing liquid crystal display device
KR20030028968A (en) Apparatus of connecting a polorizing plate in Liquid Crystal Display
JP2007232911A (en) Method of manufacturing liquid crystal display panel
JPH11254550A (en) Optical member
KR100723268B1 (en) Apparatus and method for flexible liquid crystal display with curved surface
JPH06102505A (en) Polarizing plate sticking device for liquid crystal cell
JP2002365624A (en) Manufacturing method and manufacturing device for liquid crystal display element
JP2000010061A (en) Polarizing plate sticking device
KR20070013575A (en) Apparatus for adhering a polarizing plate