JPS63200122A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPS63200122A JPS63200122A JP62033694A JP3369487A JPS63200122A JP S63200122 A JPS63200122 A JP S63200122A JP 62033694 A JP62033694 A JP 62033694A JP 3369487 A JP3369487 A JP 3369487A JP S63200122 A JPS63200122 A JP S63200122A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- color filter
- crystal display
- display device
- color
- 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 abstract description 44
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 230000003595 spectral effect Effects 0.000 claims abstract description 9
- 239000013078 crystal Substances 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 238000010030 laminating Methods 0.000 abstract description 3
- 230000003287 optical effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 11
- 239000003086 colorant Substances 0.000 description 3
- 238000004040 coloring Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 239000004988 Nematic liquid crystal Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000001681 protective effect Effects 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133371—Cells with varying thickness of the liquid crystal layer
-
- 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
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)
- Optical Filters (AREA)
- Liquid Crystal (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分針〕
本発明は、カラーフィルタを用いて構成される液晶表示
装置の画質改善に係〕、特に、電極の上にカラーフィル
タを積層した基板によって構成される液晶表示装置の構
造に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Use Minute Hand] The present invention relates to improving the image quality of a liquid crystal display device constructed using color filters], and in particular, to improving the image quality of a liquid crystal display device constructed using a color filter. The present invention relates to the structure of a liquid crystal display device.
２枚の基板間の液晶並びにカラーフィルタを挾持した構
造を持つ液晶表示装置の表示品質の向とを計る為のｆｌ
Ｉ造についてはｌ開昭ω−１５９８３１，特開昭６０−
１５９８２３に列示されたものがあるお第３図は前者か
ら引用した一実施例に於ける液晶表示Ｖ＆置の断面構造
図であり、第４図は後者から引用したものである。FL is used to measure the display quality of a liquid crystal display device that has a structure in which liquid crystal and color filters are sandwiched between two substrates.
Regarding I-built, I Kaisho ω-159831, Japanese Patent Kaisho 60-
159823, FIG. 3 is a cross-sectional structural diagram of a liquid crystal display V& in one embodiment taken from the former, and FIG. 4 is taken from the latter.
第２図及び第３図に関しその構造を見ると、まず一つの
基板３１ 、４１の内面に所望の電極３３，４３を形成
後その表面に配向＠３７．４’ｌ’を設けて配向処理し
。Looking at the structure with reference to FIGS. 2 and 3, first, desired electrodes 33, 43 are formed on the inner surface of one substrate 31, 41, and then an orientation @37.4'l' is provided on the surface and an alignment treatment is performed. .
もう一方の基板諺、４２には主に赤、緑、ｔの光を透過
するカラーフィルタ３６．４６を形成した後、その上に
電極３４．４４を積層し、更に配向１［３７、４７を設
けて配向処理ヲ行ない、前記基板３１ 、４１との間に
液晶３５ 、４５Ｙｌ：挾持し、最後に偏光体３８ 、
４８ を配設して構成されている。After forming a color filter 36.46 that mainly transmits red, green, and t light on the other substrate 42, electrodes 34.44 are laminated thereon, and the orientation 1 [37, 47] is formed. The liquid crystals 35 and 45Yl are sandwiched between the substrates 31 and 41, and finally the polarizers 38 and
It consists of 48 units.
更に第３図に関しては、保護膜３９がカラーフィルタ３
６と電極あの間に設けられて成る。ここで１両従来列に
於ける表示品質向上のポイントは、特にシイステッド・
ネマティックそ−ドの液晶３５ 、４５會用いて電圧無
印加時に暗状態、電圧印加時に明状態と変化する。いわ
ゆるノーマリブラックという表示を行う時、電圧、無印
加時に旋光分散によって、著しい着色現象が生ずるのを
、赤のカラーフィルタの膜厚ｆ ｄＲ３００、４００緑
のカラーフィルタの膜厚ｆ：ｄＧ ３０１ 、４０１
、責のカラーフィルタの膜厚をｄＢ ３０２ 、４０２
とした時この３１１の間で、ｄＢ ） ｄＧ ） ｄＲ
とする事によりて液晶３５ 、４５の厚みｔ実質的に変
化させて１着色を抑え表示されるコントラストを高くシ
１．更に色の表示を鮮やかにするものであった。Furthermore, regarding FIG. 3, the protective film 39 is the color filter 3.
6 and the electrode A. Here, the point of improving the display quality in the conventional one-car train is especially
Using nematic liquid crystals 35 and 45, the display changes from a dark state when no voltage is applied to a bright state when a voltage is applied. When performing a so-called normally black display, a remarkable coloring phenomenon occurs due to optical rotation dispersion when no voltage is applied. 401
, the film thickness of the responsible color filter is dB 302, 402
Between these 311, dB ) dG ) dR
By doing so, the thickness of the liquid crystals 35 and 45 is substantially changed to suppress coloring and increase the displayed contrast. Furthermore, the color display was made more vivid.
しかし、前述の従来技術を、第５図に示す櫟な電極５４
の上にカラーフィルタ５６′を積層して構成する液晶表
示装置に適用する場合、以下の嵌な問題点を有する。即
ち、基板５２の上にまず電極５４を形成後、その上にカ
ラーフィルタ５６を、主に券、緑、青を透過する部分そ
れぞれに対応した膜厚をｄ！ｔ５００ 、 ｄＧ５０１
、 ｄｌ１５０２とした時、ｄＢ＞ｄＧ ） ｄＨの
関係をもって形成し、対向する基板５１との間に液晶５
５を挾持して構成した液晶表示装置の２つの電極５３．
５４の間に電圧を印加すると１図から明らかな様に、電
極５３．５４の間に液晶５５とカラーフィルタ５６が電
気的に直列接続されているので、印加された電圧に対し
て、力ｌ）−フィルタ５６の部分で電圧降下が生じ、カ
ラーフィルタの膜厚が厚いほど液晶５５にかかる電圧は
小さくなる。この結果、赤、緑、背のそれぞれの部分に
おける印加電圧に対する輝度の変化特性は、第６図に示
す＊に観測され友１図に見る通シ、ある印加電圧に対し
て、カラーフィルタ膜厚の薄い部分に対応した液晶５５
はど実質的にかかる電圧が大きいので、液晶５５の状態
変移が大きく起きる事から、輝度が高くなる。この為第
６図に示す様に、同一印加電圧に対して、透過色によっ
て輝度が大きく異なる現象を生む。However, the above-mentioned prior art is not applicable to the rectangular electrode 54 shown in FIG.
When applied to a liquid crystal display device configured by laminating a color filter 56' on top of the color filter 56', the following problems arise. That is, first, the electrode 54 is formed on the substrate 52, and then the color filter 56 is formed on the electrode 54, and the film thickness is d! corresponding to the part that mainly transmits the ticket, green, and blue. t500, dG501
, dl1502, the liquid crystal 5 is formed with the relationship of dB>dG) dH, and the liquid crystal 5 is formed between the opposing substrate 51.
5 sandwiched between two electrodes 53.
As is clear from Figure 1, when a voltage is applied between the electrodes 54 and 54, the liquid crystal 55 and the color filter 56 are electrically connected in series between the electrodes 53 and 54, ) - A voltage drop occurs at the filter 56, and the thicker the color filter, the smaller the voltage applied to the liquid crystal 55. As a result, the luminance change characteristics with respect to the applied voltage in each of the red, green, and back portions are observed as * shown in Figure 6, and as shown in Figure 1, the color filter film thickness LCD 55 compatible with thin parts of
Since the applied voltage is substantially large, a large state change occurs in the liquid crystal 55, resulting in high brightness. For this reason, as shown in FIG. 6, a phenomenon occurs in which the luminance differs greatly depending on the transmitted color for the same applied voltage.
実際に本構成の液晶表示装置にて、カラーＩｍ寂を表示
すると、非常に赤味の強調された不自然な色しか表現で
きないという問題が発生した。When a liquid crystal display device having this configuration was actually used to display a color image, a problem arose in that only an unnatural color with an extremely emphasized reddish tinge could be expressed.
換言すれば、赤に比べて、緑や責の色が極めて表現しに
くいという問題点を有するものであった。In other words, green and the color of blame are extremely difficult to express compared to red.
本発明は前述の問題点を解決する為のもので。 The present invention is intended to solve the above-mentioned problems.
複数の電極を有する２枚の基板の少くとも一方の基板く
形成された電極の上にカラーフィルタを積層し前記２枚
の基板間に液晶を挾持してなる液晶表示装置に於て、該
カラーフィルタの分光特性に対応して各カラーフィルタ
膜厚を変化させた事を特徴とする。In a liquid crystal display device, a color filter is laminated on an electrode formed on at least one of two substrates having a plurality of electrodes, and a liquid crystal is sandwiched between the two substrates. A feature is that the film thickness of each color filter is changed in accordance with the spectral characteristics of the filter.
本発明は、電極の間に液晶とカラーフィルタが電気的に
直列接続された状態の液晶表示装置に関し、今光特性に
対応して各カラーフィルタ膜厚を変化させる事によって
、液晶に実質的に印加される電圧を制御し１表現される
色のバランスｔｗ４整するものである。The present invention relates to a liquid crystal display device in which a liquid crystal and a color filter are electrically connected in series between electrodes.The present invention relates to a liquid crystal display device in which a liquid crystal and a color filter are electrically connected in series between electrodes. The applied voltage is controlled to adjust the balance tw4 of colors to be expressed.
実施列ｌ
第１図は本発明に於ける一実施例を示す液晶表示装置の
断面構造図である。主に赤全透過する部分のカラーフィ
ルタ膜厚ｄＲ１００、主に緑を透過する部分のカラーフ
ィルタ膜厚ｄＧ１０１ 、主にｔｔ透遇する部分のカラ
ーフィルタ膜厚ｄＢ１０２の３値の間でｄＢ ｗ＋ ｄ
Ｇ ） ｄＨの関係を持つ様にカラーフィルタ６を形成
したものである０本構成の液晶表示装置について、それ
ぞれの色の部分について電極３．４に対する印加電圧に
対応する輝度の変化を観測したところ第２ＦＩ！Ｊを得
た１図中の変化曲線に見る様に、同一の印加電圧に対し
て各部分で得られる輝度が近づいたため、実際のカラー
画像の表示に於ても、非常に鮮やかな色を表現できた。Embodiment 1 FIG. 1 is a cross-sectional structural diagram of a liquid crystal display device showing one embodiment of the present invention. dB w+ d between the three values: color filter film thickness dR100 of the part that mainly transmits all red, color filter film thickness dG101 of the part that mainly transmits green, and color filter film thickness dB102 of the part that mainly transmits tt.
G) Observation of changes in brightness corresponding to the voltage applied to the electrodes 3.4 for each colored part of a liquid crystal display device with zero filters in which the color filter 6 is formed to have a dH relationship. 2nd FI! As seen in the change curve in Figure 1 where J was obtained, the brightness obtained in each part for the same applied voltage is close to each other, so even when displaying an actual color image, very vivid colors are expressed. did it.
この現象は第６図と比較するとより明確である。This phenomenon is more clear when compared with FIG.
実施ｆｌ’１１２
第７図は本発明に於ける別の実施列に於ける液晶表示装
置の断面構造図である。カラーフィルタの膜厚ｄＲ７０
０、ｄＧ７０１ 、 ｄＢ７０２の３［に対して、ｄＲ
） ｄＧ 冨ｄＢなる関係が成立する櫟にカラーフィル
タ７６を電極７４の上に積層して形成したものである。Implementation fl'112 FIG. 7 is a cross-sectional structural diagram of a liquid crystal display device in another implementation row of the present invention. Color filter film thickness dR70
0, dG701, dB702 for 3[, dR
) The color filter 76 is formed by laminating the color filter 76 on the electrode 74 in a square shape in which the relationship dG-dB holds true.
実際に用いるカラーフィルタ７６は。The color filter 76 actually used is as follows.
それぞれの色に対応する透過率に大きな差がある場合が
あるので１列えば緑の部分の透過率が他の２つの色の部
分に比べて著しく低い場合には、本実施列のごとくカラ
ーフィルター厚を設定すると。There may be a large difference in the transmittance corresponding to each color, so if the transmittance of the green part in one row is significantly lower than the other two color parts, use a color filter like this row. Setting the thickness.
よシ自然な色表現が可能となる。同機に、用いるカラー
フィルタの特性によりてｄＲ） ｄＧ ） ｄＢ な
る膜厚設定もとル得る。A more natural color expression is possible. For this machine, a film thickness setting of dR) dG) dB can be obtained depending on the characteristics of the color filter used.
実施列３
第８図は本発明に於けるまた別の実施例における液晶表
示装置の断面ｌｌｌ造図である。カラーフィルタの色設
計にあたりては、膜厚の設定によってその色相及び彩度
が大なく変化し、カラフィルタ−自身の色バランスを保
つ為に任意の膜厚設定が困難な場合がある１本実施列は
この時に適用され得るものであって、最適な色設計を施
されたカラーフィルタ８６の上に特別な分光特性を有し
ない透光性膜８９ｆ：積層して１両者の積層体としてカ
ラーフィルタ膜厚８００，８０１，８０２を設定したも
のである１図中、カラーフィルタ８６の膜厚は一定に記
載したが、■カラーフィルタの色の最適化の為にはこの
限）でない事は言うまでもない。Embodiment 3 FIG. 8 is a cross-sectional diagram of a liquid crystal display device according to another embodiment of the present invention. When designing the color of a color filter, the hue and saturation change significantly depending on the film thickness setting, and it may be difficult to set an arbitrary film thickness in order to maintain the color balance of the color filter itself. The column can be applied at this time, and a transparent film 89f having no special spectral characteristics is laminated on a color filter 86 with an optimal color design, and a color filter is formed as a laminate of both. In Figure 1, which has film thicknesses of 800, 801, and 802, the film thickness of the color filter 86 is shown as constant, but it goes without saying that this is not the limit for optimizing the color of the color filter. .
本発明の上記の構成によれば、電極の上に積層されたカ
ラーフィルタ膜厚をカラーフィルタの分光特性に対応し
て変化させる事によって、これらに電気的に直列につな
がる液晶に印加される電圧を制御したので、非常にバラ
ンスのよい色表示が実現可能となる。４Ｉに、いわゆる
ノーマリブラックの表示を行う場合に有効であって、そ
れぞれの色の中間的輝度の状ａｔ混色して色を表現する
時には更に有効である０本発明をテレビジョン受像機用
の液晶表示装置に適用すると、非常に自然なカラー画像
の表現が可能であった。According to the above configuration of the present invention, by changing the film thickness of the color filter layered on the electrodes in accordance with the spectral characteristics of the color filter, the voltage applied to the liquid crystal electrically connected in series with the color filters is changed. As a result, an extremely well-balanced color display can be realized. 4I, this invention is effective when performing a so-called normally black display, and is even more effective when expressing a color by mixing colors at an intermediate brightness state of each color. When applied to a liquid crystal display device, it was possible to express very natural color images.
第１図は本発明の液晶表示装置の断面構造図。
第２図は本発明の第１図の構成を持つ液晶表示装置にお
いて得られる電極への印加電
圧と輝度の変化の相関図。
第３図は従来の液晶表示装置の断面構造図。
第４図は別の従来の液晶表示装置の断面構造図。
第５図は従来の液晶表示の断面構造図。
第６図は従来の第５図の液晶表示装置において得られる
電極への印加電圧と輝度の変
化の相関図。
第７図は本発明の一実施列の液晶表示装置の断面ｗ＠図
。
第８図は本発明の別の実施列の液晶表示装置の断面構造
図。
１ 、３１ 、４１ 、５１ 、７１ 、８１２．３２
，４２，５２．７２，８２・・基板３．３３，４３．
＆ｌ、７３，８３
４．３４，４４．５４，７４，８４・・電極５．３５，
４５．５５，７５，８５φ・液晶６．３６，４６．５６
，７６．８６・・カラーフィルタ？ 、 ３７ 、４７
、５１．’ｒｌ、８’ｌ・・配向膜８．３８，４８．
５８，７８，８８・・偏光膜３９・・保１１１１１１Ｎ
［
田・・透光性膜
１００ 、３００ 、 ａ 、 ７００ 、８００ ・
・赤の部分のカラーフィルタ膜厚
１０１ 、３０１ 、４０１ 、５０１ 、７０１ 、
８０１・・緑の部分のカラー
１０２ 、３０２ 、４０２ 、５０２ 、７０２ 、
８０２・・育の部分のカラーフ
ィルタ暎厚
以 上
出願人 セイコーエプソン株式会社
代理人 弁理士量 上 務他１名
第１１！Ｉ
第２図
第３図
第４図
第５Ｆｌ！Ｊ
（１Ｅ（江イｌｊ１．．）
第６図FIG. 1 is a cross-sectional structural diagram of a liquid crystal display device of the present invention. FIG. 2 is a correlation diagram between the voltage applied to the electrodes and the change in brightness obtained in the liquid crystal display device having the configuration shown in FIG. 1 according to the present invention. FIG. 3 is a cross-sectional structural diagram of a conventional liquid crystal display device. FIG. 4 is a cross-sectional structural diagram of another conventional liquid crystal display device. FIG. 5 is a cross-sectional structural diagram of a conventional liquid crystal display. FIG. 6 is a correlation diagram between the voltage applied to the electrodes and the change in brightness obtained in the conventional liquid crystal display device shown in FIG. FIG. 7 is a cross-sectional view of a liquid crystal display device according to one embodiment of the present invention. FIG. 8 is a cross-sectional structural diagram of a liquid crystal display device according to another embodiment of the present invention. 1, 31, 41, 51, 71, 812.32
,42,52.72,82...Substrate 3.33,43.
&l, 73, 83 4.34, 44.54, 74, 84...electrode 5.35,
45.55, 75, 85φ・LCD 6.36, 46.56
,76.86...color filter? , 37 , 47
, 51. 'rl, 8'l...Alignment film 8.38,48.
58, 78, 88... Polarizing film 39... Ho 111111N
[Ta...Transparent film 100, 300, a, 700, 800 ・
・Color filter film thickness of red part 101, 301, 401, 501, 701,
801...Color of the green part 102, 302, 402, 502, 702,
802...The color filter in the education part is extremely thick Applicant: Seiko Epson Co., Ltd. Agent: Patent attorney: J.M. and 1 other person No. 11! I Figure 2 Figure 3 Figure 4 Figure 5 Fl! J (1E (Ei lj1..) Figure 6
Claims (5)
基板に形成された電極の上にカラーフィルタを積層し前
記２枚の基板間に繊晶を挾持してなる液晶表示装置に於
て、該カラーフィルタの分光特性に対応して各カラーフ
ィルタ膜厚を変化させた事を特徴とする液晶表示装置。(1) In a liquid crystal display device in which a color filter is laminated on an electrode formed on at least one of two substrates having a plurality of electrodes, and a fiber crystal is sandwiched between the two substrates. A liquid crystal display device characterized in that the film thickness of each color filter is changed in accordance with the spectral characteristics of the color filter.
する分光特性を有する３種の集合体である事を特徴とす
る特許請求の範囲第１項記載の液晶表示装置。(2) The liquid crystal display device according to claim 1, wherein the color filter is an aggregate of three types having spectral characteristics that mainly transmit red, green, and blue light.
応するカラーフィルタ膜厚をｄＧ、 青に対応するカラーフィルタ膜厚をｄＢと した時、この３値の間で、ｄＲ＞ｄＢあるいはｄＲ≧ｄ
Ｇなる関係が成立する事を特徴とする特許請求の範囲第
１項記載の液晶表示装置。(3) When the color filter thickness corresponding to red is dR, the color filter thickness corresponding to green is dG, and the color filter thickness corresponding to blue is dB, between these three values, dR>dB or dR≧d
2. The liquid crystal display device according to claim 1, wherein the relationship G holds.
には非線形素子が形成されている事を特徴とする特許請
求の範囲第１項記載の液晶表示装置。(4) The liquid crystal display device according to claim 1, wherein a nonlinear element is formed on a substrate opposite to the substrate on which the color filter is laminated.
する分光特性を有する膜と、特別な分光特性を有しない
透光性膜の積層体からなる事を特徴とする特許請求の範
囲第１項記載の液晶表示装置。(5) The color filter is comprised of a laminate of a film having spectral characteristics that primarily transmits red, green, and blue light, and a translucent film having no special spectral characteristics. The liquid crystal display device according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62033694A JPS63200122A (en) | 1987-02-17 | 1987-02-17 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62033694A JPS63200122A (en) | 1987-02-17 | 1987-02-17 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63200122A true JPS63200122A (en) | 1988-08-18 |
Family
ID=12393524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62033694A Pending JPS63200122A (en) | 1987-02-17 | 1987-02-17 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63200122A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5117224A (en) * | 1988-02-16 | 1992-05-26 | Casio Computer, Ltd. | Color liquid crystal display apparatus |
| US5237437A (en) * | 1989-12-18 | 1993-08-17 | Honeywell Inc. | Apparatus and method for a high contrast, wide angle, color, flat panel, liquid crystal display |
| US6414739B2 (en) * | 1997-11-13 | 2002-07-02 | Nec Corporation | Method of manufacturing a liquid crystal display device |
-
1987
- 1987-02-17 JP JP62033694A patent/JPS63200122A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5117224A (en) * | 1988-02-16 | 1992-05-26 | Casio Computer, Ltd. | Color liquid crystal display apparatus |
| US5237437A (en) * | 1989-12-18 | 1993-08-17 | Honeywell Inc. | Apparatus and method for a high contrast, wide angle, color, flat panel, liquid crystal display |
| US6414739B2 (en) * | 1997-11-13 | 2002-07-02 | Nec Corporation | Method of manufacturing a liquid crystal display device |
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