JPS5994740A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPS5994740A JPS5994740A JP57205042A JP20504282A JPS5994740A JP S5994740 A JPS5994740 A JP S5994740A JP 57205042 A JP57205042 A JP 57205042A JP 20504282 A JP20504282 A JP 20504282A JP S5994740 A JPS5994740 A JP S5994740A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- electrode
- display device
- substrate
- crystal display
- 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
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Liquid Crystal (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
Description
【発明の詳細な説明】 関する。[Detailed description of the invention] related.
液晶表示装置が広く普及しているが、・）、の表示形態
としては、外光の反射強度を変えることによシ文字、数
字等を表示する反射表示型が多い。腕時計の時刻表示、
電卓の数字表示等の多くは反射表示型である。Although liquid crystal display devices are widely used, most display formats are reflective display types that display characters, numbers, etc. by changing the intensity of reflection of external light. watch time display,
Many of the numeric displays on calculators are reflective displays.
一方、明るい所でも暗い所でも視認性のよい表示を行う
ためには、照明光源を用いて透過率の変化によシ文字、
数字等を表示する透過表示型とすることが好ましい。し
かしながら透過表示型の液晶表示装置は、照明光源を用
いるために、平面的に明るさを均一にするための構造上
の工夫が必要であシ、また反射表示型と比べて消費電力
が大きく、厚みも大きいといった難点がある。明るさを
均一にすることは、例えば光源からの光を拡散させるこ
とにょシ比較的容易に実現できるが、消費電力と厚みに
関しては、従来有効な解決手段が提案されていない。On the other hand, in order to display images with good visibility in both bright and dark places, it is necessary to use an illumination light source to change the transmittance.
It is preferable to use a transparent display type that displays numbers and the like. However, since transmissive display type liquid crystal display devices use an illumination light source, structural improvements are required to make the brightness uniform across the plane, and they also consume more power than reflective display types. The problem is that it is too thick. Uniform brightness can be achieved relatively easily by, for example, diffusing light from a light source, but no effective solution has been proposed in the past regarding power consumption and thickness.
本発明１−１−上記の問題をｌｑ’ｌ決し、低消費電力
てかつ薄形として、しかも平面的に均一な明るさを実現
した透過表示型の液晶表示装置１を提供することを目的
とする。Invention 1-1 - An object of the present invention is to provide a transmissive liquid crystal display device 1 which solves the above problems, has low power consumption, is thin, and achieves uniform brightness in a plane. do.
本発明は、液晶を封入保持する二枚の電極基板のうち一
方に、照明光源としてのＥＬ（エレクトロルミネセンス
）パネルの発光面にｊ６明導電膜からなる電極を形成し
たものを用いる仁とを／ｌ’ケ徴とする。The present invention uses a method in which an electrode made of a J6 bright conductive film is formed on the light emitting surface of an EL (electroluminescence) panel as an illumination light source on one of two electrode substrates that enclose and hold a liquid crystal. /l'ke sign.
ここでＥＬパネルは、液晶封止基板も兼ねた′Ｆ１１極
基板として用いるので発光面の平坦性が優れたものであ
ることが必要である。そのためＥＬ用金光体膜およびそ
の電極である透明導電膜、更に′必要に応じてこの上に
形成さｉする透明絶縁ｎ１４（」１、蒸ス“１、スパッ
タ、ＣＶＤ等の薄ＩＫ％ 形成技？ｌｉｉ Ｋよシ積層
被着するととが望ｔ１−い。Here, since the EL panel is used as a 'F11 electrode substrate which also serves as a liquid crystal sealing substrate, it is necessary that the light emitting surface has excellent flatness. Therefore, a transparent conductive film, which is a gold-optical film for EL and its electrode, and a transparent insulating film formed thereon as necessary, are formed using thin IK% formation techniques such as 1, vapor, sputtering, and CVD. ?lii It is desirable to apply a layer of K.
本発明によりは、面光源であるＥＬパネルと１［ｌ。 According to the present invention, an EL panel which is a surface light source and 1 [l.
極基板を一体形成するため、平面的な明るさの均一性に
優れた、低消費電力で薄形の透過表示型液晶表示装置が
実現できる。また外時、構造上も反射表示型と殆んど変
らず、製造工程も簡単である。更に、ＥＴ、用螢光利料
を選ぶことにより、表示色を任意に選ぶことができると
いう利点もある。Since the polar substrate is integrally formed, it is possible to realize a thin transmissive display type liquid crystal display device with excellent planar brightness uniformity, low power consumption, and low power consumption. Furthermore, when used outside, the structure is almost the same as that of the reflective display type, and the manufacturing process is simple. Furthermore, there is an advantage that the display color can be arbitrarily selected by selecting the ET and the fluorescent usage fee.
第１図は本発明の一実ｈ’Ｆｒ例の液晶表示装置を示す
。図において、１ノは電極基板を兼ねるＥＬパネルであ
る。ＥＬパネル１１は、任意の基板７１１の全面に導電
膜１１２を被覆してなる導電性基板上に、ＥＬ用螢光体
膜１１３を蒸着によυ形成し、この上に透明導電膜１１
４を蒸着又はスパッタによシ形成し、更にその土に透明
絶Ｒ８１１ｇ をスパッタ又１．Ｊ’、 ＣＶＤによシ
形成したものである。このようにＶｉ−ＩＩ’は形成技
術を利用して発光面を平坦に形成したＥ（、ｉ！ネル１
）上に表示■１．極として透明導電膜からなるセグメン
トＴｌｒ、 ｆｉｇ ７２を形成して一方の電極基４１
又とする。これに対向するもう一方の電極基板ｄ２、ガ
、７７等の透明絶縁基板１４に透明導電膜からなる全面
電極１５を形成したものである。とのように構成された
二枚の電極基板間に液晶１３を封入して透過表示型の液
晶表示装置が完成する。FIG. 1 shows a liquid crystal display device according to an example h'Fr of the present invention. In the figure, No. 1 is an EL panel that also serves as an electrode substrate. The EL panel 11 is constructed by forming an EL phosphor film 113 by vapor deposition on a conductive substrate in which the entire surface of an arbitrary substrate 711 is coated with a conductive film 112, and then a transparent conductive film 11 is formed on this conductive substrate.
4 was formed by vapor deposition or sputtering, and transparent Absolute R811g was then sputtered or 1. J', formed by CVD. In this way, Vi-II' is an E(, i!nel 1
)Displayed above ■1. One electrode group 41 is formed by forming a segment Tlr made of a transparent conductive film as a pole, fig.
Also. A full-surface electrode 15 made of a transparent conductive film is formed on the other transparent insulating substrate 14 such as the electrode substrate d2, 77, etc. that faces this. A transmissive display type liquid crystal display device is completed by sealing the liquid crystal 13 between the two electrode substrates configured as above.
この実施例によれば、面光源であるＥＬ／？ネルを電極
基板として利用しているため、表示面の明るさは均一で
あシ、しかも薄形となる。また消費電力も他の光源を用
いて同等の明るさを得る場合に比べて小さい。According to this embodiment, the surface light source EL/? Since flannel is used as an electrode substrate, the brightness of the display surface is uniform and the display is thin. Furthermore, power consumption is also lower than when obtaining equivalent brightness using other light sources.
第２図は別の実施例で、第１図と逆にＥＬノックル側に
全面電極１５を設け、とれに対向する基板側にセグメン
ト電極１２を設けたものである。FIG. 2 shows another embodiment in which, contrary to FIG. 1, a full-surface electrode 15 is provided on the EL nockle side, and a segment electrode 12 is provided on the substrate side facing the rib.
この実施例によっても第１図の実施例と同様の効果が得
られる。This embodiment also provides the same effects as the embodiment shown in FIG.
第３図は第２図の変形例で、第２図における透明絶縁膜
１１Ｓ と全面電極１５を省略したものである。即ちＥ
Ｌパネルｇ１１１を全１１ｉｉ ’Ｆ４ｊ、 棲とする
場合には、とのようにＥＬパネル駆動用の透明導電膜１
１４をその壕ま液晶１バ庖１用箱、極として共用１゛る
ことかできる。この実がｉ例にょＪＶ、げ、第１図、第
２図に比べて更に’！？’７造および製造工程が簡単な
ものとなる。FIG. 3 is a modification of FIG. 2, in which the transparent insulating film 11S and the entire surface electrode 15 in FIG. 2 are omitted. That is, E
When the L panel g111 is used as a full 11ii 'F4j, the transparent conductive film 1 for driving the EL panel is
14 can be used in common as a box for one liquid crystal display and one pole. This fruit is even more '! ? '7 Construction and manufacturing process become simpler.
本発明は１一方の＠、 １１基板とし７てアクディプ・
マトリクス型表示回ｆ’ｊｉを集積形成したものを用い
た場合にもｉｆｌ：ｉ用う゛ることかできる。アクティ
グ・マトリクス型表示回路は、例えば第４図に示すよう
に、スイッチ棄子・とじでのＦＥＴ ２ノと信号電圧蓄
積用のキャノ？シタ２２からなるスイッチ／キャノやシ
タアレイ、データラインＸ１ｙＸ２ 、・・・Ｘ、アド
レスラインＹ１１Ｙａｔ・・・。The present invention consists of one @, 11 substrate and 7
ifl:i can also be used when matrix-type display circuits f'ji are integrated. For example, as shown in Fig. 4, an active matrix type display circuit has two FETs at the end of the switch and a capacitor for accumulating the signal voltage. A switch/cano array consisting of a 22 switch/cancel and a 22 switch, a data line X1yX2, . . . , and an address line Y11Yat .
Ｙｎおよびキャパシタ２２の１ｔＬ圧が印加される各画
素の表示電極２３を集積回路技術によシ基板上に集積形
成して得られる。このようなアクティブ・マトリクス型
表示回路を用いた本発明の実施例を第５図に示１゜ＥＬ
パネル１１１′ｌｌＩの構成は第２図の実施例と同じで
あり、対向基板側にアクティブ・マトリクス型表示回路
を用いている。即ち、ガラス基板等の透明絶縁基板２４
土に非晶質シリコン膜を用いて形成した薄膜ＦＥＴ２ノ
、透明絶縁膜を透明導電膜で挾んで形成したＭＯ８形キ
ヤＡシタ２２（図ではその一方の透明導電膜を表示電極
２３としている）等を集積形成して、対向基板としてい
る。The display electrodes 23 of each pixel to which Yn and the 1tL pressure of the capacitor 22 are applied are formed integrally on a substrate by integrated circuit technology. An embodiment of the present invention using such an active matrix type display circuit is shown in FIG.
The structure of the panel 111'llI is the same as that of the embodiment shown in FIG. 2, and an active matrix type display circuit is used on the opposite substrate side. That is, a transparent insulating substrate 24 such as a glass substrate
Thin film FET 2 formed using an amorphous silicon film on soil, MO8 type capacitor A 22 formed by sandwiching a transparent insulating film between transparent conductive films (in the figure, one of the transparent conductive films is used as a display electrode 23) etc. are integrated to form a counter substrate.
この実施例によっても先の実施例と同様の効果が得られ
る。この実施例で、表示面積２０α×１５ｃｍ、、画素
数５００Ｘ５００の表示装置を構成した場合の特性例を
述べる。ＫＬパネル１ノは、螢光体膜１１３としてｚｎ
Ｓ−ＴｂＦ３を用いて斤さ２０／Ｉｍに形成され、駆動
電圧２５０■、周波数５ｋＨｚの交流駆動で緑色発光を
示す。輝度は約３００ｆＬ、発光効率は約０．３１ｒｒ
ＶＷである。また液晶１３にはＴＮ型を用いた。液駆動
電圧をＯＶとしたときの明るさは約１５ｆＬ、５Ｖにし
たときの明るさは約２５０ｆＬであった。また平均消費
電力は約１０Ｗ１表示コントラスト比は１７：１であっ
た。全体の厚さは約１ｃｒＩＬであった。This embodiment also provides the same effects as the previous embodiment. In this embodiment, an example of characteristics will be described when a display device with a display area of 20.alpha..times.15 cm and a number of pixels of 500.times.500 is configured. The KL panel 1 has zn as the phosphor film 113.
It is formed using S-TbF3 and has a thickness of 20/Im, and emits green light when driven with an AC drive voltage of 250 mm and a frequency of 5 kHz. Brightness is approximately 300fL, luminous efficiency is approximately 0.31rr
It is VW. Further, a TN type liquid crystal was used for the liquid crystal 13. The brightness when the liquid drive voltage was set to OV was about 15 fL, and the brightness when set to 5V was about 250 fL. The average power consumption was approximately 10 W, and the display contrast ratio was 17:1. The total thickness was approximately 1 crIL.
なお、アクティブ・マトリクス型表示回路を、第５図と
逆にＥＬパネル側に設けることも可能である。Note that it is also possible to provide the active matrix type display circuit on the EL panel side, contrary to FIG.
第１図は本発明の一実施例の液晶表示装置を示す図、第
２図は他の実施例の液晶表示装置を示す図１第３図は第
２図の変形例を示す図、第４図はアクティブ・マトリク
スハＩＪ表示回路の（“７．Ｖ成を示す図、第５図はア
クディグ・マトリクス型表示回路を用いた本発明の他の
実施例の液晶表示装置を示す図である。
１）・・・ＥＬパネル、１１ｔ・・・ＥＬ用脅光体１１
・セ、１２・・・セグメント電極（透明導電膜）、１３
・・・液晶、１４・・・透明絶縁基板、１５・・・全面
電極（透明導電膜）、２ノ・・・薄膜ＦＥＴ、２２・・
・キヤＡ’シタ、２３・・・表示電極（透明導電膜）、
２４・・・透明絶縁基板。
出願人代理人 弁理士 鈴 江 武 音節１図
１７５
？ｉ’Ｓ ２ 「１
第３１＝’＜１
４図
＋’Ｖ1 is a diagram showing a liquid crystal display device according to one embodiment of the present invention, FIG. 2 is a diagram showing a liquid crystal display device according to another embodiment. FIG. 3 is a diagram showing a modification of FIG. 2, and FIG. The figure shows a (7.V configuration) of an active matrix high IJ display circuit, and FIG. 5 shows a liquid crystal display device according to another embodiment of the present invention using an active matrix type display circuit. 1)...EL panel, 11t...EL threat light body 11
・Se, 12... Segment electrode (transparent conductive film), 13
...Liquid crystal, 14...Transparent insulating substrate, 15...Full surface electrode (transparent conductive film), 2...Thin film FET, 22...
・Kaya A'shita, 23...Display electrode (transparent conductive film),
24...Transparent insulating substrate. Applicant's agent Patent attorney Takeshi Suzue Syllable 1
175? i'S 2 "1 31st='<1 Figure 4+'V
Claims (4)
過表示型の液晶表示装置において、前記二枚の電極基板
のうち一方が、照明光源となるＥＬパネル上に透明導電
膜からなる電極を形成したものであることを特徴とする
液晶表示装置。(1) In a transmissive display type liquid crystal display device configured by sealing liquid crystal between two electrode substrates, one of the two electrode substrates is coated with a transparent conductive film on an EL panel that serves as an illumination light source. 1. A liquid crystal display device comprising electrodes formed thereon.
体膜、透明導電膜更に必要ならば透明絶縁膜を薄膜形成
技術によシこの順に積層被着したものである特許請求の
範囲第１項記載の液晶表示装置。(2) The EL/4 channel is a patent claim in which an EL phosphor film, a transparent conductive film, and, if necessary, a transparent insulating film are laminated in this order on a conductive substrate using a thin film forming technique. The liquid crystal display device according to item 1.
他方に全面電極が形成されたものである４’＆ ［ｆ’
Ｆ ！ｔｉ’Ｊ求の範囲第１項記載の液晶表示装置。(3) The two electrode substrates have a segment electrode on one side,
4'&[f' where a full-surface electrode is formed on the other side
F! The liquid crystal display device according to item 1 of the scope of ti'J requirements.
リクス型表示回路が集積形成され、他方に全面電極が形
成されたものである特許請求の範囲第１項記載の液晶表
示装置バ、(4) A liquid crystal display device according to claim 1, wherein the two electrode substrates have an active matrix type display circuit integrated thereon on one side and electrodes formed on the entire surface on the other side;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57205042A JPS5994740A (en) | 1982-11-22 | 1982-11-22 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57205042A JPS5994740A (en) | 1982-11-22 | 1982-11-22 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5994740A true JPS5994740A (en) | 1984-05-31 |
Family
ID=16500480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57205042A Pending JPS5994740A (en) | 1982-11-22 | 1982-11-22 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5994740A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5115329A (en) * | 1989-08-17 | 1992-05-19 | Alps Electric Co., Ltd. | Electroluminescent device having a liquid crystal layer adjacent to the electroluminescent layer without any electrode placed therebetween |
| US5144292A (en) * | 1985-07-17 | 1992-09-01 | Sharp Kabushiki Kaisha | Liquid crystal display system with variable backlighting for data processing machine |
| US5225822A (en) * | 1985-07-17 | 1993-07-06 | Sharp Kabushiki Kaisha | Liquid crystal display system with variable backlighting for data processing machine |
| JP2001166300A (en) * | 1999-12-06 | 2001-06-22 | Seiko Epson Corp | Liquid crystal display device housing back light and method of producing the same |
| KR100698240B1 (en) * | 2000-12-29 | 2007-03-21 | 엘지.필립스 엘시디 주식회사 | Reflection Liquid Crystal Display |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5317766A (en) * | 1976-07-31 | 1978-02-18 | Citizen Watch Co Ltd | Lighting device of electronic watch |
-
1982
- 1982-11-22 JP JP57205042A patent/JPS5994740A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5317766A (en) * | 1976-07-31 | 1978-02-18 | Citizen Watch Co Ltd | Lighting device of electronic watch |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5144292A (en) * | 1985-07-17 | 1992-09-01 | Sharp Kabushiki Kaisha | Liquid crystal display system with variable backlighting for data processing machine |
| US5225822A (en) * | 1985-07-17 | 1993-07-06 | Sharp Kabushiki Kaisha | Liquid crystal display system with variable backlighting for data processing machine |
| US5115329A (en) * | 1989-08-17 | 1992-05-19 | Alps Electric Co., Ltd. | Electroluminescent device having a liquid crystal layer adjacent to the electroluminescent layer without any electrode placed therebetween |
| JP2001166300A (en) * | 1999-12-06 | 2001-06-22 | Seiko Epson Corp | Liquid crystal display device housing back light and method of producing the same |
| KR100698240B1 (en) * | 2000-12-29 | 2007-03-21 | 엘지.필립스 엘시디 주식회사 | Reflection Liquid Crystal Display |
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