JPH09269508A - Liquid crystal display element - Google Patents
Liquid crystal display elementInfo
- Publication number
- JPH09269508A JPH09269508A JP7728096A JP7728096A JPH09269508A JP H09269508 A JPH09269508 A JP H09269508A JP 7728096 A JP7728096 A JP 7728096A JP 7728096 A JP7728096 A JP 7728096A JP H09269508 A JPH09269508 A JP H09269508A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- transparent
- width
- electrode
- light shielding
- 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
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
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
-
- 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
- G02F1/133512—Light shielding layers, e.g. black matrix
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Liquid Crystal (AREA)
- Geometry (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明はＩＰＳ（イン・プ
レイン・スイッチング）方式の液晶表示素子（パッシブ
型及びアクティブ型）に関し、特に白輝度の低下と、コ
ントラスト及び視角特性の劣化の防止に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IPS (in-plane switching) type liquid crystal display device (passive type and active type), and more particularly to reduction of white luminance and prevention of deterioration of contrast and viewing angle characteristics.
【０００２】[0002]
【従来の技術】近年、液晶表示素子（以下ＬＣＤと言
う）は軽量・薄型・低消費電力などの特性を生かし、各
種情報機器端末やビデオ機器などに使用されている。こ
れらのＬＣＤはＴＮ（ツイスト・ネマチック）やＳＴＮ
（スーパー・ツイスト・ネマチック）形に代表されるＬ
ＣＤが大部分であった。しかしこの従来のＬＣＤは実用
化されているが、視野角が比較的狭いという問題があっ
た。2. Description of the Related Art In recent years, liquid crystal display elements (hereinafter referred to as LCDs) have been used in various information equipment terminals, video equipment, etc. by taking advantage of characteristics such as light weight, thin shape, and low power consumption. These LCDs are TN (twisted nematic) and STN
L represented by (super twisted nematic) type
The CD was the majority. However, although this conventional LCD has been put to practical use, it has a problem that the viewing angle is relatively narrow.
【０００３】このような点から、イン・プレイン・スイ
ッチング（ＩＰＳ：Ｉｎ−Ｐｌａｎｅ−Ｓｗｉｔｃｈｉ
ｎｇ）方式のＬＣＤの提案がなされている（例えば文献
ＪＡＰＡＮ ＤＩＳＰＬＡＹ ’９２−５４７〜５５０
Ｒ．Ｋｉｅｆｅｒ他、“Ｐ２−３０ Ｉｎ−Ｐｌａｎ
ｅ Ｓｗｉｔｃｈｉｎｇ ｏｆ Ｎｅｍａｔｉｃ Ｌｉ
ｑｕｉｄ Ｃｒｙｓｔａｌｓ”）。このＩＰＳ方式のＬ
ＣＤは走査電極と信号電極が櫛歯状に形成された基板
と、電極が形成されていない基板との間に液晶が封入さ
れた構造をしている。From such a point, in-plane switching (IPS: In-Plane-Switch)
ng) type LCD has been proposed (for example, the document JAPAN DISPLAY '92 -547 to 550.
R. Kiefer et al., "P2-30 In-Plan"
e Switching of Nematic Li
"quid Crystals"). L of this IPS system
The CD has a structure in which liquid crystal is sealed between a substrate on which scanning electrodes and signal electrodes are formed in a comb shape and a substrate on which electrodes are not formed.
【０００４】例えば図３に示すように、ガラスのような
透明基板１１，１２の周囲がシール材１３で封止固定さ
れ、これら基板１１，１２、シール材１３によって形成
された空間内にｎ形液晶（誘電率異方性が負の液晶）１
４が封入される。一方の基板１２の内面に、図４Ａに示
すような一対の櫛歯状の画素電極１５と対向電極１６と
が互いに噛みあった状態で形成され、他方の基板１１に
は電極は形成されていない。基板１１，１２の各内面に
配向膜１７，１８がそれぞれ形成され、これら配向膜１
７，１８はそれぞれ、電極１５，１６の各歯の長手方向
と直交する方向に配向処理がなされている。その配向方
向をそれぞれ印１９，２０で示す。従って液晶１４の液
晶分子１４ａの長軸は電極１５，１６の各歯の長手方向
と直角な方向で、かつ基板１１，１２とそれぞれ平行に
配向されている。基板１１，１２の外面にそれぞれ偏光
板２１，２２が形成され、一方の偏光板２１の偏光方向
２３は配向方向１９と同一とされているが、他方の偏光
板２２の偏光方向２４は配向方向２０、偏光方向２３と
直交する方向とされている。また、液晶は電極１５，１
６の各歯の長手方向と平行な方向で、かつ基板１１，１
２とそれぞれ平行に配向されたｐ形液晶（誘電率異方性
が正の液晶）でもよい。For example, as shown in FIG. 3, the periphery of transparent substrates 11 and 12 such as glass is sealed and fixed by a sealing material 13, and an n-type is formed in a space formed by the substrates 11 and 12 and the sealing material 13. Liquid crystal (liquid crystal with negative dielectric anisotropy) 1
4 is enclosed. A pair of comb-teeth-shaped pixel electrodes 15 and a counter electrode 16 as shown in FIG. 4A are formed on the inner surface of one substrate 12 in a state of being meshed with each other, and no electrodes are formed on the other substrate 11. . Alignment films 17 and 18 are formed on the inner surfaces of the substrates 11 and 12, respectively.
7 and 18 are each subjected to an alignment treatment in a direction orthogonal to the longitudinal direction of each tooth of the electrodes 15 and 16. The orientations are indicated by marks 19 and 20, respectively. Therefore, the long axes of the liquid crystal molecules 14a of the liquid crystal 14 are oriented in the direction perpendicular to the longitudinal direction of the teeth of the electrodes 15 and 16 and parallel to the substrates 11 and 12, respectively. Polarizing plates 21 and 22 are formed on the outer surfaces of the substrates 11 and 12, respectively, and the polarization direction 23 of one polarizing plate 21 is the same as the alignment direction 19, but the polarization direction 24 of the other polarizing plate 22 is the alignment direction. 20 and a direction perpendicular to the polarization direction 23. The liquid crystal has electrodes 15 and 1.
6 in the direction parallel to the longitudinal direction of each tooth and on the substrates 11, 1
A p-type liquid crystal (liquid crystal having a positive dielectric anisotropy) oriented in parallel with 2 may be used.
【０００５】図３に示した電極１５，１６間に電圧を印
加しない状態では、このＬＣＤに入射された光はその入
射側の偏光板例えば２１により直線偏光とされ、その偏
光方向と液晶分子１４ａの長軸方向とが一致しているか
ら、偏光方向を変えられることなく液晶１４を透過する
ため、出射側の偏光板２２に達した光の偏向方向はその
偏光板２２の偏向方向と直交し、遮断される。In the state where no voltage is applied between the electrodes 15 and 16 shown in FIG. 3, the light incident on the LCD is linearly polarized by the polarizing plate 21 on the incident side, and the polarization direction and the liquid crystal molecules 14a. Since the light passes through the liquid crystal 14 without changing the polarization direction, the polarization direction of the light reaching the polarizing plate 22 on the output side is orthogonal to the polarization direction of the polarizing plate 22. , Cut off.
【０００６】しかし電極１５，１６間に電圧を印加する
と、これら電極１５，１６の間の電界により液晶分子１
４ａの長軸方向が、図４Ｂに示すように電極の歯の長手
方向と平行する方向に曲げられる。よって基板１１側か
ら入射され、偏光板２１により直線偏光とされた光は液
晶１４を透過中に液晶１４の複屈折により楕円偏光に変
化し、偏光板２２を透過する。However, when a voltage is applied between the electrodes 15 and 16, the electric field between the electrodes 15 and 16 causes the liquid crystal molecule 1
The major axis direction of 4a is bent in a direction parallel to the longitudinal direction of the electrode teeth as shown in FIG. 4B. Therefore, the light that is incident from the substrate 11 side and is linearly polarized by the polarizing plate 21 is changed to elliptically polarized light by the birefringence of the liquid crystal 14 while being transmitted through the liquid crystal 14, and is transmitted through the polarizing plate 22.
【０００７】このようなＬＣＤにより画像を表示するに
は、例えば図４Ａに示した一対の電極１５，１６を、各
画素対応に設け、その各一対の電極の一方を走査電極と
し、他方を信号電極とする。即ち従来の単純マトリクス
（ＸＹマトリックス）方式と同様の表示方法である。こ
の他図５に示すように各画素に対応して電極１５，１６
と共にスイッチング素子としてＴＦＴ（薄膜トランジス
タ）３３を形成し、列状のソースバス３５を信号電極、
行状のゲートバス３６を走査電極として各画素を選択的
に表示する現行のＴＦＴアクティブマトリクス方式と同
様の表示方法もある。また、ＴＦＴのような三端子スイ
ッチング素子以外にダイオードやバリスタ等の二端子ス
イッチング素子を用いる場合もある。In order to display an image on such an LCD, for example, a pair of electrodes 15 and 16 shown in FIG. 4A are provided corresponding to each pixel, one of the pair of electrodes is used as a scanning electrode, and the other is a signal. Use as an electrode. That is, it is a display method similar to the conventional simple matrix (XY matrix) method. Besides, as shown in FIG. 5, electrodes 15 and 16 are provided corresponding to each pixel.
A TFT (thin film transistor) 33 is formed as a switching element together with the source bus 35 arranged in a row and a signal electrode,
There is also a display method similar to the current TFT active matrix system in which each pixel is selectively displayed using the row-shaped gate bus 36 as a scanning electrode. In addition to a three-terminal switching element such as a TFT, a two-terminal switching element such as a diode or a varistor may be used.
【０００８】このＩＰＳ方式ＬＣＤは図３Ｂに示すよう
に、基板１１，１２間の真中における基板１１，１２と
平行な面に対し、対称構造になっているため、視野角が
広いと云われ、前記英文の文献において、電子計算機に
よるシミュレーションの結果は従来のＴＮやＳＴＮ形の
ＬＣＤよりも視角依存性が小さいことが示されている。As shown in FIG. 3B, this IPS type LCD is said to have a wide viewing angle because it has a symmetrical structure with respect to the plane parallel to the substrates 11 and 12 in the middle between the substrates 11 and 12. In the English literature, it is shown that the result of the simulation by the electronic computer has a smaller viewing angle dependency than that of the conventional TN or STN type LCD.
【０００９】[0009]
【発明が解決しようとする課題】 （１）画素電極１５及び対向電極１６をクロムまたは酸
化クロムなどを用いた遮光層で形成した場合には、透明
基板１２上に画素電極１５と対向電極１６とが各画素に
対応して形成されているため、両電極間の表示領域（１
画面分の合計）の画面全体に対する割合、つまり開口率
が従来のＩＰＳ方式でない普通のＬＣＤ（対向電極が透
明基板１１の内面に形成されている）に比べて可なり小
さいので、白輝度が低くなる問題があった。(1) When the pixel electrode 15 and the counter electrode 16 are formed of a light shielding layer using chromium or chromium oxide, the pixel electrode 15 and the counter electrode 16 are formed on the transparent substrate 12. Is formed corresponding to each pixel, the display area (1
The ratio of (total for screen) to the entire screen, that is, the aperture ratio is considerably smaller than that of a normal LCD (a counter electrode is formed on the inner surface of the transparent substrate 11) which is not a conventional IPS system, and thus the white brightness is low. There was a problem.
【００１０】即ち、図２のＢに示すように、画素電極１
５及び対向電極１６の幅及び両電極の間隔をいずれも１
０μｍとした実験モデルでは、黒輝度は０．５ｃｄ／ｍ
2 と低く問題ないが、白輝度が８４ｃｄ／ｍ2 と低い値
を示している。 （２）一方、両電極をＩＴＯなどの透明層で形成した場
合には、開口率は上述と変らないが、両電極を光が透過
するので白輝度が高くなる。しかし黒輝度も同時に高く
なり、コントラストが低下する問題があった。即ち、図
２のＣに示すように、上記と同じ寸法で両電極を形成し
たモデルでは、白輝度が１１０ｃｄ／ｍ 2 、黒輝度が
１．０ｃｄ／ｍ2 と両者共高い値を示し、これらの比で
与えられるコントラストは１１０となり、Ｂの場合のコ
ントラスト１６８に比べて可なり低いことが分る。That is, as shown in FIG. 2B, the pixel electrode 1
5 and the width of the counter electrode 16 and the interval between both electrodes are 1
In the experimental model with 0 μm, the black luminance is 0.5 cd / m
TwoAs low as no problem, white brightness is 84 cd / mTwoAnd low value
Is shown. (2) On the other hand, when both electrodes are formed of a transparent layer such as ITO
In this case, the aperture ratio is the same as above, but light passes through both electrodes.
Therefore, the white brightness is increased. However, the black brightness is also high at the same time.
Therefore, there is a problem that the contrast is lowered. That is,
As shown in 2C, form both electrodes with the same dimensions as above.
The model has a white brightness of 110 cd / m Two, Black brightness
1.0 cd / mTwoAnd both show high values.
The contrast given is 110, which is
It turns out that it is considerably lower than the Untrust 168.
【００１１】また透明層で電極を形成した場合、画面の
光の透過率が高いため、偏光板特性（２枚の偏光板の軸
角度を直交させる構造では、画面の斜め方向から見た場
合光ぬけが起こる性質がある）の影響を受け易くなり、
この結果視角特性が劣化する問題があった。 （３）この発明は、従来の電極に遮光層のみを用いる場
合のような白輝度の低下や、透明層のみを用いる場合の
ようなコントラスト及び視角特性の劣化のないＬＣＤを
提供することを目的としている。When an electrode is formed of a transparent layer, the light transmittance of the screen is high. Therefore, the polarizing plate characteristics (in the structure in which the axial angles of the two polarizing plates are orthogonal to each other, the It has a tendency to get rid of)
As a result, there is a problem that the viewing angle characteristics are deteriorated. (3) It is an object of the present invention to provide an LCD in which white luminance is not deteriorated as in the case where only a light-shielding layer is used for a conventional electrode and contrast and viewing angle characteristics are not deteriorated as in the case where only a transparent layer is used. I am trying.
【００１２】[0012]
（１）この発明は、２枚の透明基板が液晶層を挟んで近
接対向して配され、その一方の透明基板の内面に画素電
極及び対向電極が各画素に対応して形成されているＩＰ
Ｓ（イン・プレイン・スイッチング）方式液晶表示素子
に関する。請求項１の発明では特に、画素電極及び対向
電極が、透明層の上に遮光層を重ねた二層構造とされ、
その遮光層の幅が透明層の幅の２５〜７５％の範囲に選
定される。(1) In the present invention, two transparent substrates are arranged in close proximity to each other with a liquid crystal layer interposed therebetween, and a pixel electrode and a counter electrode are formed on the inner surface of one transparent substrate corresponding to each pixel.
The present invention relates to an S (in-plane switching) type liquid crystal display device. In the invention of claim 1, in particular, the pixel electrode and the counter electrode have a two-layer structure in which a light shielding layer is laminated on a transparent layer,
The width of the light shielding layer is selected within the range of 25 to 75% of the width of the transparent layer.
【００１３】（２）請求項２の発明では、画素電極及び
対向電極は、幅方向の中心部に遮光層が、その両端に透
明層がそれぞれ形成され、その遮光層の幅の合計が電極
幅（全体の幅）の２５〜７５％の範囲に選定される。(2) In the invention of claim 2, in the pixel electrode and the counter electrode, a light shielding layer is formed at the center in the width direction and transparent layers are formed at both ends thereof, and the total width of the light shielding layers is the electrode width. It is selected in the range of 25 to 75% of (total width).
【００１４】[0014]
【発明の実施の形態】図１の実施例を参照して発明の実
施の形態を説明する。ただし図１には図３、図４と対応
する部分に同じ符号を付け、重複説明を省略する。請求
項１の発明では、画素電極１５及び対向電極１６が、透
明層４０の上に遮光層４１を重ねた二層構造とされ、そ
の遮光層４１の幅が電極幅（この場合は透明層の幅に等
しい）の２５〜７５％の範囲に選定される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the embodiment shown in FIG. However, in FIG. 1, portions corresponding to those in FIGS. 3 and 4 are denoted by the same reference numerals, and redundant description will be omitted. According to the invention of claim 1, the pixel electrode 15 and the counter electrode 16 have a two-layer structure in which the light shielding layer 41 is laminated on the transparent layer 40, and the width of the light shielding layer 41 is the electrode width (in this case, the transparent layer 25% to 75% of the width).
【００１５】このようにすると、図２Ａに示すように白
輝度、黒輝度及びコントラストがＢの従来の遮光層のみ
の場合とＣの従来の透明層のみの場合のほぼ中間の値と
なるので、遮光層のみの場合の白輝度の低下や透明層の
みの場合のコントラスト及び視角特性の劣化が抑えられ
る。図２Ａは遮光層４１の幅を５μｍ、透明層４０の幅
及び両層の間隔を共に１０μｍとしている。遮光層４１
の幅を電極幅の２５％以下にすると遮光層４１を併用し
た効果が小さくなりすぎ、また７５％以上にすると透明
層４０を併用した効果が小さくなりすぎ、いずれの場合
も中間の特性が得られなくなる。By doing so, as shown in FIG. 2A, the white luminance, the black luminance and the contrast have almost intermediate values between the case of the conventional light shielding layer of B and the case of the conventional transparent layer of C, respectively. It is possible to suppress a decrease in white luminance in the case of only the light shielding layer and deterioration of contrast and viewing angle characteristics in the case of only the transparent layer. In FIG. 2A, the width of the light shielding layer 41 is 5 μm, the width of the transparent layer 40 and the distance between both layers are 10 μm. Light-shielding layer 41
If the width is less than 25% of the electrode width, the effect of using the light-shielding layer 41 together becomes too small, and if it is more than 75%, the effect of using the transparent layer 40 together becomes too small, and in both cases, intermediate characteristics are obtained. I will not be able to.
【００１６】他の構造として遮光層４１の両側に透明層
４０を設け（図１Ｃ）、遮光層４１の幅を電極幅の２５
〜７５％に選定することによって、前記図１Ａ，Ｂの二
層構造の場合とほぼ同じ特性が得られる。前記いずれの
場合も、透明層４０にＩＴＯを、遮光層４１にクロムま
たは酸化クロムを用いれば、これらの材料は安価に得ら
れるので、画素電極及び対向電極を経済的に形成するこ
とができる。As another structure, transparent layers 40 are provided on both sides of the light-shielding layer 41 (FIG. 1C), and the width of the light-shielding layer 41 is 25 times the electrode width.
By selecting about 75%, almost the same characteristics as in the case of the two-layer structure shown in FIGS. 1A and 1B can be obtained. In any of the above cases, if ITO is used for the transparent layer 40 and chromium or chromium oxide is used for the light shielding layer 41, these materials can be obtained at low cost, so that the pixel electrode and the counter electrode can be economically formed.
【００１７】[0017]
【発明の効果】以上述べたように、この発明では、画素
電極及び対向電極は、透明層４０と遮光層４１を用いそ
れぞれが電極幅全体の２５〜７５％の範囲に選定されて
いるので、白輝度及びコントラストは従来の遮光層のみ
の場合と、透明層のみの場合との中間の値となる。よっ
て、従来の遮光層のみの場合の白輝度の低下及び透明層
のみの場合のコントラストや視角特性の劣化（斜め方向
の光ぬけ）が防止される。As described above, in the present invention, the pixel electrode and the counter electrode are selected within the range of 25 to 75% of the entire electrode width by using the transparent layer 40 and the light shielding layer 41. The white brightness and the contrast are intermediate values between the case of the conventional light-shielding layer only and the case of the transparent layer only. Therefore, it is possible to prevent a decrease in white luminance in the case of only the conventional light-shielding layer and deterioration of contrast and viewing angle characteristics (light leakage in an oblique direction) in the case of only the transparent layer.
【００１８】この発明は白輝度を高くできるため、バッ
クライトの低消費電力化にも効果がある。Since the present invention can increase the white brightness, it is also effective in reducing the power consumption of the backlight.
【図１】この発明の実施例を示す図で、Ａは断面図、Ｂ
はＡの画素電極１５及び対向電極１６の１画素分の形状
の一例を示す平面図、ＣはＡの画素電極１５及び対向電
極１６の他の構造を示す断面図。FIG. 1 is a view showing an embodiment of the present invention, in which A is a sectional view and B is a sectional view.
Is a plan view showing an example of the shape of one pixel of the A pixel electrode 15 and the counter electrode 16, and C is a sectional view showing another structure of the A pixel electrode 15 and the counter electrode 16.
【図２】図１Ａの実施例の白輝度、黒輝度及びコントラ
スト特性の一例を従来例と比較して示した図。FIG. 2 is a diagram showing an example of white luminance, black luminance and contrast characteristics of the embodiment of FIG. 1A in comparison with a conventional example.
【図３】従来のＩＰＳ方式ＬＣＤの説明に供する図で、
Ａは要部の分解斜視図、Ｂは断面図。FIG. 3 is a diagram for explaining a conventional IPS type LCD,
A is an exploded perspective view of a main part, and B is a sectional view.
【図４】Ａは図３の透明基板１２上の電極１５，１６の
一例を示す平面図、Ｂは図３Ｂの電極１５，１６間に電
界を印加した状態を示す断面図。4A is a plan view showing an example of electrodes 15 and 16 on the transparent substrate 12 of FIG. 3, and B is a cross-sectional view showing a state in which an electric field is applied between the electrodes 15 and 16 of FIG. 3B.
【図５】Ａは図３のＬＣＤがＴＦＴアクティブマトリク
スＬＣＤである場合に、透明基板１２の内面に形成され
た電極１５，１６を含むＴＦＴアレイの要部の平面図、
ＢはＡのａ−ａ′断面図。5A is a plan view of a main part of a TFT array including electrodes 15 and 16 formed on an inner surface of a transparent substrate 12 when the LCD of FIG. 3 is a TFT active matrix LCD,
B is a sectional view taken along line aa ′ of A.
【手続補正書】[Procedure amendment]
【提出日】平成８年５月２２日[Submission date] May 22, 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】請求項２[Correction target item name] Claim 2
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
Claims (2)
て配され、その一方の基板の内面に画素電極及び対向電
極が各画素に対応して形成されているＩＰＳ（イン・プ
レイン・スイッチング）方式の液晶表示素子において、 前記画素電極及び対向電極が、透明層の上に遮光層を重
ねた二層構造とされ、その遮光層の幅が透明層の幅の２
５〜７５％の範囲に選定されていることを特徴とする液
晶表示素子。1. An IPS (in-plane) in which two substrates are arranged in close proximity to each other with a liquid crystal layer interposed therebetween, and a pixel electrode and a counter electrode are formed corresponding to each pixel on the inner surface of one substrate. (Switching) type liquid crystal display element, the pixel electrode and the counter electrode have a two-layer structure in which a light shielding layer is laminated on a transparent layer, and the width of the light shielding layer is equal to the width of the transparent layer.
A liquid crystal display device characterized by being selected in a range of 5 to 75%.
向して配され、その一方の透明基板の内面に各画素に対
応して画素電極及び対向電極が形成されているＩＰＳ
（イン・プレイン・スイッチング）方式の液晶表示素子
において、 前記画素電極及び対向電極は、幅方向の中心部に遮光層
が、その両端に透明層がそれぞれ形成され、その遮光層
の幅が電極幅（全体の幅）の２５〜７５％の範囲に選定
されていることを特徴とする液晶表示素子。2. An IPS in which two transparent substrates are arranged in close proximity to each other with a liquid crystal layer interposed therebetween, and a pixel electrode and a counter electrode are formed on the inner surface of one transparent substrate corresponding to each pixel.
In the (in-plane switching) type liquid crystal display element, the pixel electrode and the counter electrode have a light-shielding layer formed at the center in the width direction and transparent layers at both ends thereof, and the width of the light-shielding layer is the electrode width. A liquid crystal display device characterized by being selected in a range of 25 to 75% of (total width).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7728096A JP3712774B2 (en) | 1996-03-29 | 1996-03-29 | Liquid crystal display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7728096A JP3712774B2 (en) | 1996-03-29 | 1996-03-29 | Liquid crystal display element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09269508A true JPH09269508A (en) | 1997-10-14 |
| JP3712774B2 JP3712774B2 (en) | 2005-11-02 |
Family
ID=13629464
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7728096A Expired - Fee Related JP3712774B2 (en) | 1996-03-29 | 1996-03-29 | Liquid crystal display element |
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| Country | Link |
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| JP (1) | JP3712774B2 (en) |
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| US6111627A (en) * | 1997-11-25 | 2000-08-29 | Hyundai Electronics Industries Co., Ltd. | In-plane switching mode liquid crystal display having electrode for preventing static electricity |
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