JPS6167021A - Liquid crystal display element - Google Patents

Liquid crystal display element

Info

Publication number
JPS6167021A
JPS6167021A JP19023884A JP19023884A JPS6167021A JP S6167021 A JPS6167021 A JP S6167021A JP 19023884 A JP19023884 A JP 19023884A JP 19023884 A JP19023884 A JP 19023884A JP S6167021 A JPS6167021 A JP S6167021A
Authority
JP
Japan
Prior art keywords
uneven
liquid crystal
crystal display
plate
display 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.)
Pending
Application number
JP19023884A
Other languages
Japanese (ja)
Inventor
Keiichiro Shimizu
清水　桂一郎
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP19023884A priority Critical patent/JPS6167021A/en
Publication of JPS6167021A publication Critical patent/JPS6167021A/en
Pending 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
    • G02F1/1343—Electrodes
    • G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
    • 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
    • G02F1/133371—Cells with varying thickness of the liquid crystal layer

Landscapes

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

Abstract

PURPOSE:To obtain a wide field angle by making the inside of electrode substrates wavily uneven. CONSTITUTION:Each of electrode substrates 1, 1 is composed of a glass plate 2,2 and an electrically conductive transparent film 3,3 formed on the inside of the plate 2,2 The inside of the plate 2,2 is wavily uneven, and the preferred wave form of a sine wave having <=about 100mum wavelength. In case of <=100mum wavelength, the contrast is reduced in the average value but is not made ununiform. The transparent electrically conductive films 3, 3 of tin oxide or indium oxide are formed along the uneven insides of the glasses plate 2, 2. The inside of the film 3, 3 are also wavily uneven same as the plate 2, 2. Orienting film 4, 4 for controlling the arrangement of liq. crystal molecules are formed on the inside of each of the electrode substrates 1, 1, that is, the uneven inside of each of the films 3, 3 respectively.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は液晶表示素子、特にツィステッド・ネマティッ
ク型（ＴＮ型）液晶表示素子に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a liquid crystal display element, particularly a twisted nematic type (TN type) liquid crystal display element.

（従来の技術） ＴＮ型液晶表示素子は、第４図に示すように。(Conventional technology) A TN type liquid crystal display element is shown in FIG.

視野角範囲θが狭く、特に、デユーティ比が高くなると
かなり狭くなるといった特性を有している。The viewing angle range θ is narrow, and particularly becomes considerably narrower as the duty ratio increases.

従来、ＴＮ型液晶表示素子がもつ上記特性を改良するた
めに、　？ｆｌ晶材料の粘性や、液晶表示素子を構成す
る２枚のガラス基板の間隔、あるいは液晶分子の配列状
態を制御する配向膜の種類等を変えるといった手段が試
みられている。Conventionally, in order to improve the above characteristics of TN type liquid crystal display elements, ? Attempts have been made to change the viscosity of the fl crystal material, the distance between the two glass substrates constituting the liquid crystal display element, or the type of alignment film that controls the arrangement of liquid crystal molecules.

（発明の目的） 本発明は、上記従来の手段とは異なる新規な手段によっ
てＴＮ型液晶表示素子がもつ上記特性を改良した液晶表
示装置を提供することを目的とする。(Objective of the Invention) An object of the present invention is to provide a liquid crystal display device in which the above characteristics of a TN type liquid crystal display element are improved by new means different from the above conventional means.

（発明の構成） 本発明の液晶表示素子は１両電極基板の内側表面がそれ
ぞれ波状の凹凸面に形成されたものである。(Structure of the Invention) In the liquid crystal display element of the present invention, the inner surfaces of both electrode substrates are each formed into a wave-like uneven surface.

（作用） 両電極基板の内側表面をそれぞれ波状の凹凸面に形成し
たことにより、電極基板の内側表面に設けられる配向膜
面が波状の凹凸に形成される。そして、この配向膜面の
凹凸よって視野角の方向が拡散され、視野角範囲が視野
角の方向が異なる領域の集合体となり、結果的に視野角
範囲が広くなる。(Function) By forming the inner surfaces of both electrode substrates into wave-like uneven surfaces, the alignment film surface provided on the inner surfaces of the electrode substrates is formed into wave-like uneven surfaces. The viewing angle direction is diffused by the unevenness of the alignment film surface, and the viewing angle range becomes a collection of regions having different viewing angle directions, resulting in a wide viewing angle range.

（実施例） 以下１本発明の構成を実施例につき図面を参照して説明
する。(Example) The configuration of the present invention will be described below with reference to the drawings.

両電極基板１，１は、第１図に示すように、ガラス板２
．２と、これらガラス板２．２の内側表面に設けられる
透明導電膜３，３とから構成されている。Both electrode substrates 1, 1 are connected to a glass plate 2, as shown in FIG.
．． 2, and transparent conductive films 3, 3 provided on the inner surfaces of these glass plates 2.2.

ガラス板２．２は、その内側表面が波状の凹凸面に形成
されている。波の形状としては正弦波形状が好ましく、
またその波長が約１００μ以下であることが好ましい。The inside surface of the glass plate 2.2 is formed into a wave-like uneven surface. The shape of the wave is preferably a sine wave,
Further, it is preferable that the wavelength is about 100μ or less.

１００μ以下であると、平均コントラストは低下するも
のの、コントラストのムラとはならない。When it is 100 μm or less, the average contrast decreases, but contrast does not become uneven.

このようになされたガラス板２，２の凹凸面に沿って酸
化スズまたは酸化インジウムからなる透明導電膜３．３
が設けられており、その内側表面はガラス板２，２と同
様波状の凹凸面となされている。A transparent conductive film 3.3 made of tin oxide or indium oxide is formed along the uneven surfaces of the glass plates 2, 2 thus formed.
is provided, and its inner surface has a wavy uneven surface similar to the glass plates 2, 2.

また、上記両電極基板１．１の内側表面、すなわち透明
導電膜３，３の内側表面（凹凸面）に、液晶分子の配列
を制御する配向膜４，４がそれぞれ設けられている。Further, on the inner surfaces of both electrode substrates 1.1, that is, on the inner surfaces (uneven surfaces) of the transparent conductive films 3, 3, alignment films 4, 4 for controlling the arrangement of liquid crystal molecules are provided, respectively.

そして、液晶表示素子の視野角範囲は、第２図に示すよ
うに、配向膜４の面の垂直方向あるいは水平方向に対し
て決まることから、配向ＩＩ　４の面が上記したような
波状であると視野角の方向が異なる領域６・・・が多数
存在することになり、その結果、第３図に示すように、
全体として視野角範囲θが広くなる。The viewing angle range of the liquid crystal display element is determined with respect to the vertical or horizontal direction of the surface of the alignment film 4, as shown in FIG. There are many regions 6... with different viewing angle directions, and as a result, as shown in Fig. 3,
Overall, the viewing angle range θ becomes wider.

なお１図中５５は２両電極基板１，１間に封入されたツ
ィステッド・ネマティック型液晶である。Note that 55 in FIG. 1 is a twisted nematic liquid crystal sealed between two electrode substrates 1, 1.

（発明の効果） 本発明によれば広視野角を得ることができる。(Effect of the invention) According to the present invention, a wide viewing angle can be obtained.

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

第１図乃至第３図は本発明に係る液晶表示素子の一実施
例を示し、第１図は液晶表示素子の部分拡大断面図、第
２図は配向膜面と視野角の方向との関係を示す図、第３
図は液晶表示素子の側面図。 第４図は従来の液晶表示素子を示す側面図である。 １・・・電極基板、４・・・配向膜、５・・・液晶ほか
１名 第７図1 to 3 show an embodiment of a liquid crystal display element according to the present invention, FIG. 1 is a partially enlarged sectional view of the liquid crystal display element, and FIG. 2 is a relationship between the alignment film surface and the viewing angle direction. Figure 3 showing
The figure is a side view of a liquid crystal display element. FIG. 4 is a side view showing a conventional liquid crystal display element. 1... Electrode substrate, 4... Alignment film, 5... Liquid crystal and 1 other person Figure 7

Claims (1)

【特許請求の範囲】 １）内側表面に配向膜を形成した一対の電極基板間に液
晶が封入された液晶表示素子において、 両電極基板の内側表面がそれぞれ波状の凹 凸面に形成されたことを特徴とする液晶表示素子。[Claims] 1) In a liquid crystal display element in which a liquid crystal is sealed between a pair of electrode substrates each having an alignment film formed on the inner surface thereof, the inner surfaces of both electrode substrates are each formed into a wavy uneven surface. Characteristic liquid crystal display element.
JP19023884A 1984-09-10 1984-09-10 Liquid crystal display element Pending JPS6167021A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19023884A JPS6167021A (en) 1984-09-10 1984-09-10 Liquid crystal display element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19023884A JPS6167021A (en) 1984-09-10 1984-09-10 Liquid crystal display element

Publications (1)

Publication Number Publication Date
JPS6167021A true JPS6167021A (en) 1986-04-07

Family

ID=16254794

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19023884A Pending JPS6167021A (en) 1984-09-10 1984-09-10 Liquid crystal display element

Country Status (1)

Country Link
JP (1) JPS6167021A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0527242A (en) * 1991-02-01 1993-02-05 Fujitsu Ltd Liquid crystal display device
US5283675A (en) * 1991-08-30 1994-02-01 Ag Technology Co., Ltd. Liquid crystal display element with electrode having concave-convex surface at liquid crystal side
JP2005505020A (en) * 2001-10-08 2005-02-17 ネオテク リサーチ カンパニー リミテッド Liquid crystal display device with multi-region effect formed by surface undulations

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0527242A (en) * 1991-02-01 1993-02-05 Fujitsu Ltd Liquid crystal display device
US5283675A (en) * 1991-08-30 1994-02-01 Ag Technology Co., Ltd. Liquid crystal display element with electrode having concave-convex surface at liquid crystal side
JP2005505020A (en) * 2001-10-08 2005-02-17 ネオテク リサーチ カンパニー リミテッド Liquid crystal display device with multi-region effect formed by surface undulations

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