JPS63106624A - Liquid crystal display panel - Google Patents

Liquid crystal display panel

Info

Publication number
JPS63106624A
JPS63106624A JP61252707A JP25270786A JPS63106624A JP S63106624 A JPS63106624 A JP S63106624A JP 61252707 A JP61252707 A JP 61252707A JP 25270786 A JP25270786 A JP 25270786A JP S63106624 A JPS63106624 A JP S63106624A
Authority
JP
Japan
Prior art keywords
liquid crystal
crystal display
display panel
oriented film
picture element
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.)
Granted
Application number
JP61252707A
Other languages
Japanese (ja)
Other versions
JP2692693B2 (en
Inventor
Seiji Tanuma
清治 田沼
Yoshiro Koike
善郎 小池
Hideshi Yoshida
秀史 吉田
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP61252707A priority Critical patent/JP2692693B2/en
Publication of JPS63106624A publication Critical patent/JPS63106624A/en
Application granted granted Critical
Publication of JP2692693B2 publication Critical patent/JP2692693B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
    • G02F1/133757—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle with different alignment orientations

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Liquid Crystal (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)

Abstract

PURPOSE:To obtain a satisfactory display in a wide visual field by providing plural areas where the rubbing direction is the opposite direction, on an oriented film corresponding to a picture element. CONSTITUTION:On one glass substrate 3, a display use transparent electrode 1-1 of a picture element unit, an oriented film 2-1, and a thin film transistor 7 for driving the transparent electrode 1-1 are formed, the oriented film 2-1 is formed by polyimide, and also, a band-shaped spacer 6 consisting of polyimide is formed thereon, and in areas I, II of the oriented film 2-1, which are divided into two by this band-shaped spacer 6, a rubbing processing in the opposite direction is executed. Also, on the other plate 4, a transparent electrode 1-2 being common to the picture element, and an oriented film 2-2 are formed, the oriented film 2-2 is divided into two or areas I, II by a picture element unit by the spacer 6, and in its divided areas, the rubbing processing in the opposite direction is executed. Accordingly, an electro-optical characteristic of a liquid crystal display panel goes to near a characteristic by which theta is 0 deg., even if the visual angle theta is + or -10 deg.. In such a way, the visual angle of a satisfactory display is expanded to + or -10 deg..

Description

【発明の詳細な説明】 〔概要〕 この発明は、液晶表示パネルの電気光学特性の視角依存
性を軽減するために、画素対応の配向膜をラビング方向
が逆方向の領域に分割し、画素全体の視角依存性の改善
を可能とする。[Detailed Description of the Invention] [Summary] In order to reduce the viewing angle dependence of the electro-optic characteristics of a liquid crystal display panel, the present invention divides an alignment film corresponding to a pixel into regions in which the rubbing direction is opposite, and the entire pixel is This makes it possible to improve the viewing angle dependence of images.

〔産業上の利用分野〕[Industrial application field]

この発明は、液晶表示パネルに係り、特に広視野で良好
な表示を得ることの可能な液晶表示パネル構造に関する
ものである。The present invention relates to a liquid crystal display panel, and particularly to a liquid crystal display panel structure that can provide a wide viewing field and a good display.

液晶表示パネルは、薄型軽量で消費電力が小さいという
特徴を持ち、カラーフィルタを使用することによって、
カラー化が容易であることから、平面型カラー・テレビ
廓に利用されている。しかし液晶表示パネルは、観□察
する角度によって光学特性が変化するため良好な表示の
得られる視角に限度があり、この点の改善された液晶表
示パネルが要望されている。Liquid crystal display panels are thin, lightweight, and consume little power, and by using color filters,
Because it is easy to convert to color, it is used in flat color TV stores. However, since the optical characteristics of liquid crystal display panels change depending on the viewing angle, there is a limit to the viewing angle at which good display can be obtained, and there is a need for a liquid crystal display panel that is improved in this respect.

〔従来の技術〕[Conventional technology]

従来の液晶表示パネルは、第５図に示すように構成され
ている。即ち、ガラス基板３０と４０のそれぞれの電掻
上に形成された配向膜のラビング（液晶分子の配向方向
を規定する処理）方向は矢印のように、直交する方向に
組合わされている。A conventional liquid crystal display panel is constructed as shown in FIG. That is, the directions of rubbing (processing to define the alignment direction of liquid crystal molecules) of the alignment films formed on the electric scratches of the glass substrates 30 and 40 are set in orthogonal directions as shown by the arrows.

この液晶表示パネルのＸ、Ｙ軸にそれぞれ４５°で交差
しＺ軸を含む面上で視角θを定義すると、視角θに対す
る液晶表示パネルの電気光学特性は第６図の曲線に示す
ように、視角θによって大きく変化する。If viewing angle θ is defined on a plane that intersects the X and Y axes of this liquid crystal display panel at 45 degrees and includes the Z axis, then the electro-optical characteristics of the liquid crystal display panel with respect to the viewing angle θ are as shown in the curve in FIG. It changes greatly depending on the viewing angle θ.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

従来の液晶表示パネルは、視角によって電気光学特性が
大きく変化し、印加電圧、即ちデータ電圧によって最良
の表示の得られる視角が変化するため、良好な表示の得
られる視角が狭いという問題があった。Conventional liquid crystal display panels have had the problem that the viewing angle at which a good display can be obtained is narrow because the electro-optical characteristics change greatly depending on the viewing angle and the viewing angle at which the best display can be obtained changes depending on the applied voltage, that is, the data voltage. .

この発明は、上記した従来の状況から、印加電圧に左右
されずに良好な表示が広い視野で得られる液晶表示パネ
ルの提供を目的とするものである。SUMMARY OF THE INVENTION In view of the above-mentioned conventional situation, it is an object of the present invention to provide a liquid crystal display panel that can provide a good display over a wide field of view without being affected by applied voltage.

〔問題点を解決するための手段〕[Means for solving problems]

この発明の液晶表示パネルは、画素対応の配向膜にラビ
ング方向が逆方向である領域を複数段けである。In the liquid crystal display panel of the present invention, the alignment film corresponding to the pixels has a plurality of regions in which the rubbing direction is opposite to each other.

〔作用〕[Effect]

電気光学特性は、第６図に示すように視角θが０°即ち
、液晶表示パネルの正面の特性に対して、θが０°より
大きい特性と小さい特性とでは低電圧側と高電圧側とに
分かれていることに着目し、１画素内でこれを共存させ
ることにより、θが０゜の状態に近づく結果、視角依存
性が軽減される。As shown in Figure 6, the electro-optical characteristics differ from the characteristics of the viewing angle θ of 0°, that is, the front of the liquid crystal display panel, to the low voltage side and the high voltage side when the viewing angle θ is larger and smaller than 0°. By paying attention to the fact that they are divided into two and allowing them to coexist within one pixel, θ approaches a state of 0°, and as a result, viewing angle dependence is reduced.

〔実施例〕〔Example〕

第１図は本発明の液晶表示パネルの平面図であり、対向
する透明電極間に形成される画素Ｂは、例えば縦横２０
０μｍの正方形であり、マトリックス状に複数配列され
ている。FIG. 1 is a plan view of a liquid crystal display panel according to the present invention, in which a pixel B formed between opposing transparent electrodes is, for example,
They are squares with a diameter of 0 μm, and are arranged in a matrix.

この画素Ｂを形成する表示用の透明電極の中央部に、ポ
リイミドからなる帯状スペーサ６を設ける。この結果各
画素Ｂは、帯状スペーサ６によって、領域■と■に分割
される。A strip-shaped spacer 6 made of polyimide is provided at the center of the transparent electrode for display forming this pixel B. As a result, each pixel B is divided by the band-shaped spacer 6 into regions (2) and (2).

この分割された領域■と■は、模式的には第２図に示す
ように形成される。即ち、一方のガラス基板３と対向す
る他方のガラス基板４にそれぞれ上記した領域分割を行
う。The divided regions (2) and (2) are formed schematically as shown in FIG. That is, the above-described area division is performed on one glass substrate 3 and the other glass substrate 4 facing each other.

このガラス基板３．４の液晶面の配向膜はそれぞれ第２
図に示す矢印方向にラビング処理する。The alignment films on the liquid crystal surface of the glass substrates 3 and 4 are
Rub in the direction of the arrow shown in the figure.

ラビング処理は領域■をする場合、領域■をレジストに
て覆い処理をすればよく、領域■の場合も同様である。When performing the rubbing process on the area (2), the area (2) may be covered with a resist, and the same applies to the area (2).

第３図は第１図のＣ−Ｃ線に沿って切断した断面図であ
る。一方のガラス基板３上には画素単位の表示用透明電
極１−１．配向膜２−１と、この透明電極１−１を駆動
する薄膜トランジスタ７とを形成しである。配向膜２−
１はポリイミドで形成し、更にこの上にポリイミドから
なる厚さ１０μ−の帯状スペーサ６が形成されている。FIG. 3 is a sectional view taken along line CC in FIG. 1. On one glass substrate 3 are transparent electrodes 1-1 for display in pixel units. An alignment film 2-1 and a thin film transistor 7 for driving this transparent electrode 1-1 are formed. Alignment film 2-
1 is made of polyimide, and a strip-shaped spacer 6 made of polyimide and having a thickness of 10 μm is further formed thereon.

しかしてこの帯状スペーサ６によって２分割された配向
膜２−１の領域！。However, the region of the alignment film 2-1 is divided into two by the belt-shaped spacer 6! .

■には前述した逆方向のラビング処理が行われている。In (2), the above-mentioned rubbing process in the opposite direction is performed.

又他方のガラス基板４上には画素共通の透明電極１−２
と配量膜２−２とが形成され、該配向膜２−２は前記ス
ペーサ６により画素単位で領域■。Further, on the other glass substrate 4, a transparent electrode 1-2 common to pixels is provided.
and an alignment film 2-2 are formed, and the alignment film 2-2 is arranged in a region (1) in units of pixels by the spacer 6.

■に２分割され、その分割領域において逆方向のラビン
グ処理が行われている。この後、重合わされた基板間に
液晶５を封入し液晶表示パネルを完成する。このように
して組立てられた液晶表示パネルの電気光学特性は第４
図に示すように、視角θが±１０”であってもθが０°
である特性に近くなり、従って良好な表示の視角が±１
０°に拡がることとなる。The image is divided into two parts (1), and rubbing processing in the opposite direction is performed in the divided areas. Thereafter, liquid crystal 5 is sealed between the superimposed substrates to complete a liquid crystal display panel. The electro-optical characteristics of the liquid crystal display panel assembled in this way are the fourth
As shown in the figure, even if the viewing angle θ is ±10”, θ is 0°.
Therefore, the viewing angle for good display is ±1
It will expand to 0°.

〔効果〕〔effect〕

この発明によれば、液晶表示パネルの視角による電気光
学特性の変化が軽減され、広視野で良好な表示を得るこ
とのできる液晶表示パネルとなり、きわめて実用上有効
な効果を奏する。According to the present invention, changes in the electro-optical characteristics of the liquid crystal display panel due to the viewing angle are reduced, and the liquid crystal display panel can provide a good display over a wide field of view, which is extremely effective in practical use.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例に係る液晶表示パネルの平面
図、 第２図は第１図の液晶表示パネルのラビング方向を示す
模式図、 第３図は第１図のＣ−Ｃ線に沿って切断した断面図、 第４図は第１図の液晶表示パネルの電気光学特性図、 第５図は従来の液晶表示パネルの要部を示す模式図、 第６図は液晶表示パネルの電気光学特性図である。 図において、１−１と１−２は透明電橋、２−１と２−
２は配向膜、３と４はガラス基板、５は液晶、６は帯状
スペーサを示す。 ４−岑石Ｂ月町４【晶４じｆ−ｔｖ卑ル４平面可第１図 第２１２！ｌ プｒｒｒｒｔｎｃ−ｃ阜１を珍重１【τ７１−ット印度
を面Ｃり第３図 第４図 第５図1 is a plan view of a liquid crystal display panel according to an embodiment of the present invention, FIG. 2 is a schematic diagram showing the rubbing direction of the liquid crystal display panel of FIG. 1, and FIG. 3 is a line C-C of FIG. 1. 4 is a diagram showing the electro-optical characteristics of the liquid crystal display panel shown in FIG. 1. FIG. 5 is a schematic diagram showing the main parts of a conventional liquid crystal display panel. It is an electro-optical characteristic diagram. In the figure, 1-1 and 1-2 are transparent electric bridges, 2-1 and 2-
2 is an alignment film, 3 and 4 are glass substrates, 5 is a liquid crystal, and 6 is a strip-shaped spacer. 4-Shinsei B Tsukicho 4 [Akira 4ji f-tv base 4 planes available Figure 1 Figure 212! l Prrrrtnc-c 阜1 1 [τ71-t India face C Figure 3 Figure 4 Figure 5

Claims (1)

【特許請求の範囲】 それぞれの電極（１−１、１−２）とラビング処理を行
った配向膜（２−１、２−２）とを形成した一対のガラ
ス基板（３、４）間に液晶（５）を密封し、対向する電
極間に画素（Ｂ）を形成してなる液晶パネル構造におい
て、 前記画素（Ｂ）対応の配向膜（２−１、２−２）に前記
ラビング方向がそれぞれ逆方向の領域（ I 、II）を複
数設けたことを特徴とする液晶表示パネル。[Claims] Between a pair of glass substrates (3, 4) on which respective electrodes (1-1, 1-2) and alignment films (2-1, 2-2) subjected to rubbing treatment are formed. In a liquid crystal panel structure in which a liquid crystal (5) is sealed and a pixel (B) is formed between opposing electrodes, the rubbing direction is set in the alignment film (2-1, 2-2) corresponding to the pixel (B). A liquid crystal display panel characterized in that a plurality of regions (I, II) are provided in opposite directions.
JP61252707A 1986-10-22 1986-10-22 LCD panel Expired - Lifetime JP2692693B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61252707A JP2692693B2 (en) 1986-10-22 1986-10-22 LCD panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61252707A JP2692693B2 (en) 1986-10-22 1986-10-22 LCD panel

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP7285938A Division JP2705672B2 (en) 1995-11-02 1995-11-02 LCD panel

Publications (2)

Publication Number Publication Date
JPS63106624A true JPS63106624A (en) 1988-05-11
JP2692693B2 JP2692693B2 (en) 1997-12-17

Family

ID=17241130

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61252707A Expired - Lifetime JP2692693B2 (en) 1986-10-22 1986-10-22 LCD panel

Country Status (1)

Country Link
JP (1) JP2692693B2 (en)

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JPH05173139A (en) * 1991-12-20 1993-07-13 Fujitsu Ltd Liquid crystal display device and its production
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US6001277A (en) * 1995-05-26 1999-12-14 Hitachi Chemical Company, Ltd. Liquid-crystal alignment film
US6013335A (en) * 1993-07-30 2000-01-11 Sharp Kabushiki Kaisha Liquid crystal display apparatus and method for processing the same
US6081311A (en) * 1996-05-15 2000-06-27 Nec Corporation Liquid crystal display apparatus having high wide visual angle and high contrast
US6081314A (en) * 1994-04-19 2000-06-27 Nec Corporation Liquid crystal display cell
US6115093A (en) * 1997-03-31 2000-09-05 Nec Corporation Liquid crystal display device having at least two micro areas of liquid crystal layer capable of being built up from a center of each pixel
US6141074A (en) * 1995-05-19 2000-10-31 Kent State University Four domain pixel for liquid crystalline light modulating device
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US6582776B2 (en) 2000-11-24 2003-06-24 Hong Kong University Of Science And Technology Method of manufacturing photo-alignment layer
US7244627B2 (en) 2003-08-25 2007-07-17 Lg.Philips Lcd Co., Ltd. Method for fabricating liquid crystal display device
JP2008181140A (en) * 1997-02-27 2008-08-07 Sharp Corp Liquid crystal display device
US7768622B2 (en) 1997-02-27 2010-08-03 Sharp Kabushiki Kaisha Alignment treatment of liquid crystal display device

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US6344883B2 (en) 1996-12-20 2002-02-05 Sharp Kabushiki Kaisha Liquid crystal display device and method for producing the same
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