JPS59231517A - Liquid crystal multicolor display device - Google Patents
Liquid crystal multicolor display deviceInfo
- Publication number
- JPS59231517A JPS59231517A JP58106087A JP10608783A JPS59231517A JP S59231517 A JPS59231517 A JP S59231517A JP 58106087 A JP58106087 A JP 58106087A JP 10608783 A JP10608783 A JP 10608783A JP S59231517 A JPS59231517 A JP S59231517A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- conductive film
- transparent conductive
- film
- glass 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.)
- Pending
Links
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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
- G02F1/133516—Methods for their manufacture, e.g. printing, electro-deposition or photolithography
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Liquid Crystal (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Filters (AREA)
- Manufacturing & Machinery (AREA)
- Liquid Crystal Display Device Control (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、液晶マルチカラー表示装置の欠陥対策１歩留
り向上に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to defect countermeasures for liquid crystal multicolor display devices and improvement in yield.
従来のマルチカラー表示装置で、力２−フィルタを液晶
パネルの内部に作る型（ガラス基板の液晶層と接する側
に作る型）のものは、大きく分けて次の二種類かあ、る
。Conventional multicolor display devices in which the filter is formed inside the liquid crystal panel (on the side of the glass substrate in contact with the liquid crystal layer) are broadly divided into the following two types.
■透明電極をカラーフィルタ上に形成するもの■透明電
極の上にカラーフィルタを形成するもの。■A type in which a transparent electrode is formed on a color filter. ■A type in which a color filter is formed on a transparent electrode.
第１図は、■の具体例を示した図である。カラーフィル
タ１７をガラス基板１８上に形成し、カラーフィルタ１
７上に工Ｔｏ電極１６を形成している。さらに工Ｔｏｔ
極１６上には、配向膜１５が塗布、乾燥され、配向膜１
５の上をさらし布等でこする（ラビングンことにより液
晶分子を配向させている。この構造を有する液晶パネル
の欠点として次の事があげられる。FIG. 1 is a diagram showing a specific example of ■. A color filter 17 is formed on a glass substrate 18, and a color filter 17 is formed on a glass substrate 18.
An electrode 16 is formed on the surface 7. In addition, Tot
An alignment film 15 is coated and dried on the pole 16, and the alignment film 1
The surface of the liquid crystal panel having this structure is rubbed by rubbing with a bleached cloth or the like to align the liquid crystal molecules.
（１） ラビングにより、表面にある工Ｔ Ｏｉ）Ｚ
ダメ−ジを受け、■Ｔｏ透明導電膜の抵抗が変化する（
１１） パネル内に導電性のゴミが入った場合等１上
ガラス基板上の透明導電膜１２と下ガラス基板１８上の
工ＴＯ１６の間でショートが起こり欠陥となる。これは
、パネルを組み立てる際の雰囲気をクリーンなものにす
る事で防止出来る可能性があるが、工程中のゴミを完全
にシャットアウトする事は不可能であるし、ガラス基板
表面の凹凸もこの種のショートの原因となる。これは、
液晶パネルの表示上の致命的な欠陥となる。(1) Due to rubbing, there are no defects on the surface.
Due to damage, the resistance of the transparent conductive film changes (
11) When conductive dust enters the panel, a short circuit occurs between the transparent conductive film 12 on the upper glass substrate 1 and the TO 16 on the lower glass substrate 18, resulting in a defect. This may be prevented by creating a clean atmosphere when assembling the panels, but it is impossible to completely shut out dust during the process, and unevenness on the surface of the glass substrate also causes this problem. It causes short circuit of seeds. this is,
This is a fatal defect in the display of the liquid crystal panel.
（ＩＩＩ） Ｔ Ｐ Ｔ素子等のアクティブ素子を使
った液晶パネルにおいては、上下の透明導電膜１２．１
６の間にかかる信号は、完全な交流波形とはならず直流
分が載った信号となる。従って液晶の劣化が速く進み、
エージング等に問題が出る。(III) In a liquid crystal panel using active elements such as TPT elements, upper and lower transparent conductive films 12.1
The signal applied between 6 and 6 does not have a complete AC waveform, but a signal with a DC component. Therefore, the liquid crystal deteriorates rapidly,
There are problems with aging etc.
第２図は、■の具体的パネルの断面構造を示した図であ
る。図に示す様に下側のガラス基板２８上に透明導電膜
２７を形成し、さらにその上にカラーフィルタ２６を形
成している。この構造では、第１図に見られる様なラビ
ングによる工Ｔｏ透明導電膜に対するダメージは、生じ
ないが、カラーフィルタの材質が硬いものが無い為ゴミ
による透明導電膜２２．２７間のショートは、完全に無
くす事は出来ないし、カラーフィルタの絶縁性は悪い為
直流分の載った交番信号から直流分のみを除く事は出来
ないという欠点は第１図の場合と変わりが無い。FIG. 2 is a diagram showing the cross-sectional structure of a specific panel (■). As shown in the figure, a transparent conductive film 27 is formed on a lower glass substrate 28, and a color filter 26 is further formed thereon. In this structure, damage to the transparent conductive film due to rubbing as seen in FIG. 1 does not occur, but since the color filter is not made of a hard material, short circuits between the transparent conductive films 22 and 27 due to dust may occur. It is not possible to completely eliminate the DC component, and since the insulation properties of the color filter are poor, it is not possible to remove only the DC component from the alternating signal containing the DC component, which is the same as in the case shown in FIG.
本発明は、かかる欠点を除去したもので、その目的は、
欠陥の無い歩留りの良い、エージングも優れたカラー液
晶表示パネルを提供する事にある第３図は、本発明によ
る液晶表示パネルの一例である。この例は、ガラス基板
３９上に、工ＴＯ透明導電膜３８を形成し、さらにその
上に８１０゜膜３７を形成する。その上にカラーフィル
タ３６、配向膜３５．を形成した構造と・なっている。The present invention eliminates such drawbacks, and its purpose is to:
The object of the present invention is to provide a color liquid crystal display panel that is free from defects, has a high yield, and has excellent aging properties. Fig. 3 shows an example of a liquid crystal display panel according to the present invention. In this example, a TO transparent conductive film 38 is formed on a glass substrate 39, and an 810° film 37 is further formed thereon. On top of that, a color filter 36, an alignment film 35. It has a structure that has been formed.
これによると工ＴＯ透明導電膜３８は、ラビングに ゛
よりこすられない為、工ＴＯ透明導電膜３８の抵抗値が
ラビングによって低下する事は無い。又工Ｔｏ透明導電
膜３日の上に絶縁膜として８１０！層３７を形成してい
る為、液晶パネル中にゴミ等が入って上側基板３１上の
透明導電膜３２と下基板３９上の透明導電膜３Ｂとがシ
ョートするという様な欠陥か無くなった。又８１０．絶
縁膜３７は、１［］０ＩＩＸ程度の厚さで充分な高抵抗
が得られ、液晶に対する直流分のカットとなっている。According to this, since the TO transparent conductive film 38 is not rubbed by rubbing, the resistance value of the TO transparent conductive film 38 does not decrease due to rubbing. Also, as an insulating film on top of the transparent conductive film 810! Since the layer 37 is formed, defects such as short-circuiting between the transparent conductive film 32 on the upper substrate 31 and the transparent conductive film 3B on the lower substrate 39 due to dirt entering the liquid crystal panel are eliminated. Also 810. The insulating film 37 has a sufficiently high resistance with a thickness of about 1[]0IIX, and cuts the direct current to the liquid crystal.
この様に直流カットをする事により、液晶パネルのエー
ジング性が確保出来る。第４図は、直流カットの効果を
説明した図である。By cutting off the direct current in this way, the aging properties of the liquid crystal panel can be ensured. FIG. 4 is a diagram explaining the effect of DC cut.
上下のガラス基板に形成された透明導電膜間に印加され
る電圧が４１．４３に示される波形とする。すなわち一
方の電極に印加される信号を４３とするともう一方の電
極に印加される信号は４１となっているわけで、第５図
における８１０１層３７が無ければ、液晶層に印加され
る電圧は、信号４３と４１の差で表わされる値であるが
、８１０、層６７が有る場合は、第４図波線で示される
４２と４６の信号の差分が液晶層に印加される電圧とな
る。この様に８１０．膜は、液晶層に印加される非対称
な交番信号を、対称な交番信号にする役割を有している
。この効果により液晶パネルのエージング性は、飛躍的
に向上した。以上をまとめると本発明は、次の様な長所
がある。The voltage applied between the transparent conductive films formed on the upper and lower glass substrates has a waveform shown in 41.43. In other words, if the signal applied to one electrode is 43, the signal applied to the other electrode is 41.If there were no 8101 layer 37 in FIG. 5, the voltage applied to the liquid crystal layer would be , is a value expressed by the difference between signals 43 and 41, but if 810 and layer 67 are present, the voltage applied to the liquid crystal layer is the difference between signals 42 and 46, indicated by the broken line in FIG. 810 like this. The film has the role of converting an asymmetrical alternating signal applied to the liquid crystal layer into a symmetrical alternating signal. This effect has dramatically improved the aging resistance of liquid crystal panels. To summarize the above, the present invention has the following advantages.
（１）ラビングによりＩＴＯ電極がダメージを受けない
。(1) ITO electrodes are not damaged by rubbing.
（１１）パネル内に導電性のゴミが入った場合、上ガラ
ス基板上の透明導電膜と下ガラス基板上の透明導電膜の
間で生じるショートを防止する事が出来る（Ｉｌｌ）液
晶にかかる非対称波形を対称に変える事が出来、液晶の
エージングを著しく向上させる事が出来る。(11) If conductive dust enters the panel, it can prevent short circuits between the transparent conductive film on the upper glass substrate and the transparent conductive film on the lower glass substrate (Ill) Asymmetrical effects on the liquid crystal The waveform can be changed symmetrically, and the aging of the liquid crystal can be significantly improved.
８１０、絶縁膜は、材質を８１０．に限定したものでは
なく、液晶層より高抵抗な膜を得られるものであれば良
いが、薄い膜でかつ低温（（５００℃）で付けられるも
のでは８１０．が優れている810, the material of the insulating film is 810. It is not limited to the above, and any film that can obtain a film with higher resistance than the liquid crystal layer may be used, but 810.
第１図は、従来のマルチカラー液晶表示パネルの断面構
造を示したもので、カラーフィルタ上に’透明電極が形
成されているもの。
第２図は、従来のマルチカラー液晶表示パネルの断面構
造を示したもので、透明′電極上にカラーフィルタを形
成したもの。
第３図は、本発明のマルチカラー液晶表示パネルの断面
構造を示したものである。
第４図は、直流分を取り除く効果を説明した図である。
１１・・・・・・ガラス基板
１２・・・・・・透明導電膜（工ＴＯ）１３・・・・・
・配向膜
１４・・・・・・液晶層
１５・・・・・・配向膜
１６・・・・・・透明導電膜（工Ｔｏ）１７・・・・・
・カラーフィルタ
１８・・・・・・ガラス基板
２１・・・・・・ガラス基板
２２・・・・・・透明導電膜（工Ｔｏ）２３・・・・・
・配向膜
２４・・・・・・液晶層
２５・・・・・・配向膜
２６・・・・・・カラーフィルタ
２７・・・・・・透明導電膜（工Ｔｏ）２８・・・・・
・ガラス基板
３１・・・・・・ガラス基板
３２・・・・・・透明導電膜（工Ｔｏ）３３・・・・・
・配向膜
３４・・・・・・液晶層
３５・・・・・・配向膜
３６・・・・・・カラーフィルタ
３７・・・・・・絶縁層（８１０，層）３８・・・・・
・透明導電膜（工Ｔｏ）３９・・・・・・ガラス基板Figure 1 shows the cross-sectional structure of a conventional multicolor liquid crystal display panel, in which transparent electrodes are formed on color filters. FIG. 2 shows the cross-sectional structure of a conventional multicolor liquid crystal display panel, in which color filters are formed on transparent electrodes. FIG. 3 shows the cross-sectional structure of the multicolor liquid crystal display panel of the present invention. FIG. 4 is a diagram illustrating the effect of removing the DC component. 11...Glass substrate 12...Transparent conductive film (TO) 13...
・Alignment film 14...Liquid crystal layer 15...Alignment film 16...Transparent conductive film (To) 17...
・Color filter 18...Glass substrate 21...Glass substrate 22...Transparent conductive film (To) 23...
・Alignment film 24...Liquid crystal layer 25...Alignment film 26...Color filter 27...Transparent conductive film (To) 28...
・Glass substrate 31...Glass substrate 32...Transparent conductive film (To) 33...
-Alignment film 34...Liquid crystal layer 35...Alignment film 36...Color filter 37...Insulating layer (810, layer) 38...
・Transparent conductive film (To) 39...Glass substrate
Claims (1)
パネルの一方のガラス基板上に、マルチカラーフィルタ
を形成する型の液晶カラー表示装置において、該ガラス
基板は、その上に透明導電膜を積層し、さらに絶縁層、
カラーフィルタ層を積層した構造となっている事を特徴
とする液晶マルチカラー表示装置。 （１１）前記絶縁層として８１０２膜を用いた事を特徴
とする特許請求の範囲第一項記載の液晶マルチカラー表
示装置。 （Ｉｌｌ） 前記カラーフィルタ層としてゼラチン層
を染色した膜を用いる事を特徴とする特許請求の範囲第
一項記載の液晶マルチカラー表示装置。[Claims] (1) In a liquid crystal color display device in which a multicolor filter is formed on one glass substrate of a liquid crystal panel in which a liquid crystal layer is sandwiched between two glass plates, the glass substrate is , a transparent conductive film is laminated thereon, and an insulating layer,
A liquid crystal multicolor display device characterized by having a structure in which color filter layers are laminated. (11) The liquid crystal multicolor display device according to claim 1, characterized in that an 8102 film is used as the insulating layer. (Ill) The liquid crystal multicolor display device according to claim 1, wherein a film obtained by dyeing a gelatin layer is used as the color filter layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58106087A JPS59231517A (en) | 1983-06-14 | 1983-06-14 | Liquid crystal multicolor display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58106087A JPS59231517A (en) | 1983-06-14 | 1983-06-14 | Liquid crystal multicolor display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59231517A true JPS59231517A (en) | 1984-12-26 |
Family
ID=14424764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58106087A Pending JPS59231517A (en) | 1983-06-14 | 1983-06-14 | Liquid crystal multicolor display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59231517A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61156027A (en) * | 1984-12-27 | 1986-07-15 | Nissha Printing Co Ltd | Color liquid crystal display device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5625714A (en) * | 1979-08-09 | 1981-03-12 | Canon Inc | Color liquid crystal display cell |
-
1983
- 1983-06-14 JP JP58106087A patent/JPS59231517A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5625714A (en) * | 1979-08-09 | 1981-03-12 | Canon Inc | Color liquid crystal display cell |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61156027A (en) * | 1984-12-27 | 1986-07-15 | Nissha Printing Co Ltd | Color liquid crystal display device |
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