JPH08313920A - Method for manufacturing color liquid crystal device - Google Patents
Method for manufacturing color liquid crystal deviceInfo
- Publication number
- JPH08313920A JPH08313920A JP6965396A JP6965396A JPH08313920A JP H08313920 A JPH08313920 A JP H08313920A JP 6965396 A JP6965396 A JP 6965396A JP 6965396 A JP6965396 A JP 6965396A JP H08313920 A JPH08313920 A JP H08313920A
- Authority
- JP
- Japan
- Prior art keywords
- substrates
- sealing material
- liquid crystal
- pair
- crystal device
- 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
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims description 24
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 238000000034 method Methods 0.000 title claims description 11
- 239000000758 substrate Substances 0.000 claims abstract description 37
- 239000003566 sealing material Substances 0.000 claims abstract description 22
- 239000000853 adhesive Substances 0.000 claims abstract description 8
- 230000001070 adhesive effect Effects 0.000 claims abstract description 8
- 238000002788 crimping Methods 0.000 claims description 4
- 238000007639 printing Methods 0.000 claims description 4
- 229920001187 thermosetting polymer Polymers 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 210000002858 crystal cell Anatomy 0.000 description 7
- 238000001723 curing Methods 0.000 description 4
- 210000004027 cell Anatomy 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Liquid Crystal (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
(57)【要約】
【課題】 シール材にて一対の基板を固定する際の、上
下基盤の位置ずれを防止する。
【解決手段】 一方の基板（１）または（４）上にシー
ル材（３）を印刷し、このシール材（３）を熱処理によ
り一次硬化させる。次に、ギャップ保持材を散布したも
う一方の基板（４）または（１）と位置合わせの目印を
目安に対向させ、所定のギャップ値まで圧着する。もう
一度位置合わせを行った後、シール材（３）の外側に塗
布されたＵＶ接着剤（２）を硬化させ、最後に、シール
材（３）の２次硬化を行なう。
(57) 【Abstract】 PROBLEM TO BE SOLVED: To prevent displacement of upper and lower substrates when fixing a pair of substrates with a sealing material. A sealing material (3) is printed on one of the substrates (1) or (4), and the sealing material (3) is primarily cured by heat treatment. Next, the other substrate (4) or (1) on which the gap retaining material has been scattered is made to face the alignment mark as a guide, and pressure bonding is performed to a predetermined gap value. After performing the alignment once again, the UV adhesive (2) applied to the outside of the sealing material (3) is cured, and finally, the sealing material (3) is secondarily cured.
Description
【０００１】[0001]
【発明の属する技術分野】本発明はカラー液晶装置の製
造方法に関する。更に詳しくは、紫外線硬化接着剤（以
下、ＵＶ接着剤という）を用いたカラー液晶装置の基板
の固定方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a color liquid crystal device. More specifically, it relates to a method for fixing a substrate of a color liquid crystal device using an ultraviolet curable adhesive (hereinafter referred to as UV adhesive).
【０００２】[0002]
【従来の技術】従来の時刻表示用、白黒画像表示用液晶
セルのどちらか一方の基板に形成される電極は共通電極
であり、もう一方の基板の電極と組立時の位置ずれが±
５０μｍ以内であれば商品外観上支障なかった。また、
セル内のギャップ幅の均一度も±１μｍ以内の精度であ
れば充分であった。2. Description of the Related Art The electrodes formed on one of the conventional time display liquid crystal cells and the black and white image display liquid crystal cells are common electrodes, and the positional deviation during assembly with the electrodes on the other substrate is ±.
Within 50 μm, there was no problem in the appearance of the product. Also,
The uniformity of the gap width in the cell was sufficient if the accuracy is within ± 1 μm.
【０００３】しかし、カラー画像表示用液晶セルにおい
ては、カラー要素を画素電極と一致して組み立てる必要
がある。これは例えば、カラー要素の色を駆動調整する
場合にカラー要素と画素電極との間にずれがあると、隣
接する他のカラー要素に色ずれを生じさせるためであ
る。この場合の、組立上がり時点での位置ずれ許容範囲
は±５μｍであり、白黒表示用セルと比べてかなりの精
度が要求される。However, in the liquid crystal cell for displaying a color image, it is necessary to assemble the color elements so as to match the pixel electrodes. This is because, for example, when the color of the color element is drive-adjusted, if there is a deviation between the color element and the pixel electrode, a color deviation occurs in another adjacent color element. In this case, the positional deviation allowable range at the time of assembling is ± 5 μm, which requires considerably higher accuracy than that of the monochrome display cell.
【０００４】従来の液晶セルの製造方法は、片側基板に
エポキシ樹脂等のシール材をスクリーン印刷によって所
定のシール幅で塗布した後、シール材の流動性の制御、
溶剤抜き等のため一次熱硬化させ、その後、他のもう一
方の基板と重ね合わせ、所定のギャップ幅まで圧力をか
けて狭めた後、加熱により２次硬化させるものである。In the conventional method for manufacturing a liquid crystal cell, a sealing material such as an epoxy resin is applied to one side substrate by screen printing with a predetermined sealing width, and then the fluidity of the sealing material is controlled.
A primary heat curing is performed to remove the solvent and the like, and then the other substrate is superposed, a pressure is applied to a predetermined gap width to narrow it, and then a second curing is performed by heating.
【０００５】[0005]
【発明が解決しようとする課題】しかし、前述の従来技
術は、スクリーン印刷によりシール材を印刷するためシ
ール材の印刷盛り高は十数μｍとなり、圧着を行うとき
に位置ずれが生じてしまっていた。また、圧力をかけギ
ャップ幅を目標値まで狭めてからシール材の二次硬化を
行う方法があるが、２次硬化時にシール材の粘度が低下
するためにやはり位置ずれが生じてしまう。このような
問題点から、従来の製造方法はカラー表示用液晶セルの
ように高い精度が要求されるような場合には不適当であ
った。However, in the above-mentioned prior art, since the sealing material is printed by screen printing, the printing height of the sealing material is ten and several .mu.m, and the positional displacement occurs when the pressure bonding is performed. It was Further, there is a method of applying a pressure to narrow the gap width to a target value and then secondarily curing the sealing material, but the viscosity of the sealing material decreases at the time of the second curing, and thus the positional deviation still occurs. Due to these problems, the conventional manufacturing method is unsuitable in the case where high accuracy is required such as in a liquid crystal cell for color display.
【０００６】そこで本発明は上記の欠点を除去するため
になされたものであり、その目的は、従来の製造方法を
大きく変えることなく、上下基板の位置ずれが少ないカ
ラー液晶装置の製造方法を提供することにある。Therefore, the present invention has been made in order to eliminate the above-mentioned drawbacks, and an object thereof is to provide a method for manufacturing a color liquid crystal device in which the positional displacement of the upper and lower substrates is small without largely changing the conventional manufacturing method. To do.
【０００７】[0007]
【課題を解決するための手段】本発明のカラー液晶装置
の製造方法は、一対の基板間に液晶が挟持され、一方の
基板上には画素部を構成する透明電極が形成され、一方
の基板には画素部と対応する部分に赤、青、緑のカラー
要素が形成されてなるカラー液晶装置の製造方法におい
て、前記基板のうち、一方の基板上にシール材を印刷す
る工程と、前記シール材を一次熱硬化する工程と、前記
一対の基板を前記シール材を介して対向させ、所定のギ
ャップ値まで圧着する工程と、圧着後、基板どうしの位
置合わせを行う工程と、前記一対の基板の間隙の一部に
塗布されたＵＶ接着剤を硬化させ前記一対の基板を仮固
定する工程と、前記シール材を２次熱硬化させて、前記
一対の基板を固定する工程とを有することを特徴とす
る。According to a method of manufacturing a color liquid crystal device of the present invention, a liquid crystal is sandwiched between a pair of substrates, a transparent electrode constituting a pixel portion is formed on one substrate, and one substrate is formed. In a method of manufacturing a color liquid crystal device in which red, blue, and green color elements are formed in a portion corresponding to a pixel portion, a step of printing a sealing material on one of the substrates; A step of first thermosetting a material, a step of facing the pair of substrates via the sealing material and crimping to a predetermined gap value, a step of aligning the substrates after crimping, the pair of substrates The step of curing the UV adhesive applied to a part of the gap to temporarily fix the pair of substrates, and the step of secondarily thermosetting the sealing material to fix the pair of substrates. Characterize.
【０００８】[0008]
【発明の実施の形態】図１はカラー液晶装置の一実施例
を示す液晶セルの断面図である。FIG. 1 is a sectional view of a liquid crystal cell showing an embodiment of a color liquid crystal device.
【０００９】図において（４）はマトリクス基板であ
り、表面に薄膜トランジスタアレイ、及び画素電極
（５）が集積されている。（１）は対向基板で、表面上
にカラー要素（８ａ）（８ｂ）（８ｃ）が形成され、そ
の上に透明電極（７）が形成されている。カラー要素
（８ａ）（８ｂ）（８ｃ）は対向する薄膜トランジスタ
の画素電極寸法と同寸法で１要素となっており、それぞ
れ赤、青、緑の色に染色や印刷によって着色されてい
る。この２枚の基板は電極面を対向させてスペーサーを
兼ねたシール材（３）によって所定のセル厚を規定して
接着された後に液晶（６）を封入して封止されている。In the figure, (4) is a matrix substrate, on the surface of which a thin film transistor array and pixel electrodes (5) are integrated. (1) is a counter substrate on which color elements (8a), (8b) and (8c) are formed on the surface, and a transparent electrode (7) is formed thereon. The color elements (8a), (8b), and (8c) are one element having the same size as the pixel electrode size of the thin film transistors facing each other, and are colored red, blue, and green by dyeing or printing. The two substrates are sealed by encapsulating a liquid crystal (6) after adhering the electrode surfaces to each other with a sealing material (3) that also serves as a spacer to define a predetermined cell thickness.
【００１０】図２は、本発明のカラー液晶装置の製造方
法の一実施形態を説明するための平面図であり、図１と
同記号のものは同一の要素を示している。まず、基板
（１）、（４）上に配向処理を施し、ラビングを行い、
一方の基板上（１）または（４）上にシール材（３）を
スクリーン印刷した。そしてこのシール材（３）を熱処
理により一次硬化させ、セル内ギャップ確保のためにギ
ャップ保持材を散布したもう一方の基板（４）または
（１）と位置合わせの目印を目安に対向させる。次に、
対向させた一対の基板を圧着装置に入れ、所定のギャッ
プ値まで圧力をかけて圧着した。所定のギャップ値に達
したところで、もう１度位置合わせを行った後、ディス
ペンサー等によってシール部の外に図の如く塗布された
ＵＶ接着剤（２）を硬化させた。ここで、ＵＶ照射によ
ってカラー要素の変色や退色が起きぬよう、また、シー
ル材が紫外線により重合を開始せぬように、ＵＶ接着剤
（２）の部分のみに穴を開けた遮光マスクを使用すれ
ば、より良い結果が得られる。最後に、パネルに熱を加
えてシール材（３）の二次硬化を行った。FIG. 2 is a plan view for explaining an embodiment of the method for manufacturing a color liquid crystal device of the present invention, and the same symbols as in FIG. 1 indicate the same elements. First, the substrates (1) and (4) are subjected to orientation treatment and rubbed,
The sealing material (3) was screen-printed on one of the substrates (1) or (4). Then, the sealing material (3) is primarily cured by heat treatment, and is made to face the other substrate (4) or (1) on which the gap holding material is dispersed to secure the in-cell gap, using the alignment mark as a guide. next,
The pair of substrates facing each other was put into a pressure bonding device, and pressure was applied to a predetermined gap value to perform pressure bonding. When the predetermined gap value was reached, the position was adjusted once again, and the UV adhesive (2) applied outside the seal portion as shown in the figure was cured by a dispenser or the like. Here, in order to prevent discoloration or fading of the color elements due to UV irradiation and to prevent the sealant from initiating polymerization due to UV rays, a light-shielding mask with holes formed only in the UV adhesive (2) part is used. Better results will be obtained. Finally, heat was applied to the panel to secondarily cure the sealing material (3).
【００１１】[0011]
【発明の効果】以上のように、本発明の製造方法によれ
ば、２枚の基板の位置ずれを±５μｍの範囲内に納める
ことができ、したがって、色ずれのない、表示品質が良
好なカラー液晶装置を得ることができる。As described above, according to the manufacturing method of the present invention, the positional deviation between the two substrates can be kept within the range of ± 5 μm, and therefore, there is no color deviation and the display quality is good. A color liquid crystal device can be obtained.
【図面の簡単な説明】[Brief description of drawings]
【図１】カラー液晶装置の一実施例を示す液晶セルの断
面図。FIG. 1 is a sectional view of a liquid crystal cell showing an embodiment of a color liquid crystal device.
【図２】本発明のカラー液晶装置の製造方法の一実施形
態を説明するための平面図。FIG. 2 is a plan view for explaining an embodiment of a method for manufacturing a color liquid crystal device of the present invention.
（１）・・・対向基板 （２）・・・仮固定用接着剤 （３）・・・シール材 （４）・・・マトリクス基板 （５）・・・半導体素子及び画素電極 （６）・・・液晶 （７）・・・透明電極 （８ａ）（８ｂ）（８ｃ）・・・カラー要素 (1) ... Counter substrate (2) ... Temporary fixing adhesive (3) ... Sealant (4) ... Matrix substrate (5) ... Semiconductor element and pixel electrode (6). ..Liquid crystal (7) ... Transparent electrodes (8a) (8b) (8c) ... Color elements
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成８年４月２３日[Submission date] April 23, 1996
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Name of item to be amended] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【特許請求の範囲】[Claims]
Claims (1)
基板上には画素部を構成する透明電極が形成され、一方
の基板には画素部と対応する部分に赤、青、緑のカラー
要素が形成されてなるカラー液晶装置の製造方法におい
て、 前記基板のうち、一方の基板上にシール材を印刷する工
程と、 前記シール材を一次熱硬化する工程と、 前記一対の基板を前記シール材を介して対向させ、所定
のギャップ値まで圧着する工程と、 圧着後、基板どうしの位置合わせを行う工程と、 前記一対の基板の間隙の一部に塗布されたＵＶ接着剤を
硬化させ、前記一対の基板を仮固定する工程と、 前記シール材を２次熱硬化させて、前記一対の基板を固
定する工程とを有することを特徴とするカラー液晶装置
の製造方法。1. A liquid crystal is sandwiched between a pair of substrates, a transparent electrode forming a pixel portion is formed on one substrate, and red, blue, and green are formed on a portion corresponding to the pixel portion on one substrate. In a method for manufacturing a color liquid crystal device in which color elements are formed, a step of printing a sealing material on one of the substrates, a step of primary thermosetting the sealing material, and the pair of substrates Steps of facing each other via a sealing material and crimping to a predetermined gap value, a step of aligning the substrates after the crimping, and a step of curing the UV adhesive applied to a part of the gap between the pair of substrates. A method for manufacturing a color liquid crystal device, comprising: a step of temporarily fixing the pair of substrates, and a step of secondarily thermosetting the sealing material to fix the pair of substrates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6965396A JPH08313920A (en) | 1983-12-01 | 1983-12-01 | Method for manufacturing color liquid crystal device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6965396A JPH08313920A (en) | 1983-12-01 | 1983-12-01 | Method for manufacturing color liquid crystal device |
| JP58227414A JPH0752260B2 (en) | 1983-12-01 | 1983-12-01 | Method for manufacturing color liquid crystal device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58227414A Division JPH0752260B2 (en) | 1983-12-01 | 1983-12-01 | Method for manufacturing color liquid crystal device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23928098A Division JPH11125829A (en) | 1983-12-01 | 1998-08-25 | Manufacturing method of liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08313920A true JPH08313920A (en) | 1996-11-29 |
Family
ID=16860465
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6965396A Pending JPH08313920A (en) | 1983-12-01 | 1983-12-01 | Method for manufacturing color liquid crystal device |
| JP58227414A Expired - Lifetime JPH0752260B2 (en) | 1983-12-01 | 1983-12-01 | Method for manufacturing color liquid crystal device |
| JP23928098A Pending JPH11125829A (en) | 1983-12-01 | 1998-08-25 | Manufacturing method of liquid crystal display device |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58227414A Expired - Lifetime JPH0752260B2 (en) | 1983-12-01 | 1983-12-01 | Method for manufacturing color liquid crystal device |
| JP23928098A Pending JPH11125829A (en) | 1983-12-01 | 1998-08-25 | Manufacturing method of liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (3) | JPH08313920A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62186116U (en) * | 1986-05-20 | 1987-11-26 | ||
| JPS63147142A (en) * | 1986-12-10 | 1988-06-20 | Matsushita Electric Ind Co Ltd | Manufacturing method of liquid crystal display panel |
| JPS63175667A (en) * | 1987-01-14 | 1988-07-20 | Matsushita Electric Ind Co Ltd | Multi-row simultaneous coating method |
| JPS6488431A (en) * | 1987-09-29 | 1989-04-03 | Matsushita Electric Industrial Co Ltd | Manufacture of liquid crystal panel |
| JPH01142532A (en) * | 1987-11-27 | 1989-06-05 | Matsushita Electric Ind Co Ltd | Production of liquid crystal panel |
| JP2834933B2 (en) * | 1992-06-03 | 1998-12-14 | シャープ株式会社 | Manufacturing method of liquid crystal display element |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5630169A (en) * | 1979-08-21 | 1981-03-26 | Canon Kk | Color display cell |
| JPS5825689A (en) * | 1981-08-07 | 1983-02-15 | 三洋電機株式会社 | Color liquid crystal display |
| JPS5838921A (en) * | 1981-08-31 | 1983-03-07 | Sharp Corp | Production of liquid crystal display panel |
| JPS5844419A (en) * | 1981-09-11 | 1983-03-15 | Citizen Watch Co Ltd | Manufacture of liquid-crystal display device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5754918A (en) * | 1980-09-19 | 1982-04-01 | Citizen Watch Co Ltd | Manufacture of liquid crystal display cell |
-
1983
- 1983-12-01 JP JP6965396A patent/JPH08313920A/en active Pending
- 1983-12-01 JP JP58227414A patent/JPH0752260B2/en not_active Expired - Lifetime
-
1998
- 1998-08-25 JP JP23928098A patent/JPH11125829A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5630169A (en) * | 1979-08-21 | 1981-03-26 | Canon Kk | Color display cell |
| JPS5825689A (en) * | 1981-08-07 | 1983-02-15 | 三洋電機株式会社 | Color liquid crystal display |
| JPS5838921A (en) * | 1981-08-31 | 1983-03-07 | Sharp Corp | Production of liquid crystal display panel |
| JPS5844419A (en) * | 1981-09-11 | 1983-03-15 | Citizen Watch Co Ltd | Manufacture of liquid-crystal display device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11125829A (en) | 1999-05-11 |
| JPS60119526A (en) | 1985-06-27 |
| JPH0752260B2 (en) | 1995-06-05 |
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