JPS60144719A - Flexible type liquid crystal display element - Google Patents
Flexible type liquid crystal display elementInfo
- Publication number
- JPS60144719A JPS60144719A JP154084A JP154084A JPS60144719A JP S60144719 A JPS60144719 A JP S60144719A JP 154084 A JP154084 A JP 154084A JP 154084 A JP154084 A JP 154084A JP S60144719 A JPS60144719 A JP S60144719A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- display element
- phosphor layer
- thin film
- light
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、フレキシブル基板上に形成した液晶表示素子
に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a liquid crystal display element formed on a flexible substrate.
従来例の構成とその問題点
結晶性シリコン基板やガラス基板上に形成した液晶表示
素子は既に考案され、現在電卓、腕時計、。Conventional configurations and their problems Liquid crystal display elements formed on crystalline silicon substrates or glass substrates have already been devised, and are currently used in calculators, wristwatches, etc.
計測器用表示素子として広く応用されている。しかしこ
れら表示素子は、シリコン基板やガラス基板等のように
非可撓性基板上に形成した素子である。It is widely applied as a display element for measuring instruments. However, these display elements are elements formed on non-flexible substrates such as silicon substrates and glass substrates.
従って、表示素子を彎曲させた状態で設置することはで
きなく、薄型化や形状の自由度に制約をうけるという問
題があった。Therefore, the display element cannot be installed in a curved state, and there is a problem in that the degree of freedom in thinning and shape is restricted.
発明の目的
本発明はこのような従来の問題点を解決し、彎曲が可能
で薄型化や′形状の自由度の大きいフレキシブル型液晶
表示素子を提供するものである。OBJECTS OF THE INVENTION The present invention solves these conventional problems and provides a flexible liquid crystal display element that is bendable, thin, and has a large degree of freedom in shape.
発明の構成
本発明は、上記の目的を達成するため、光透過性のフレ
キシブル基板上に表示素子・発光源素子及びこれらの作
動に必要な電源と、信号処理機能を有する能動素子を形
成したフレキシブル型液晶表示素子を特徴としたもので
ある。Structure of the Invention In order to achieve the above object, the present invention provides a flexible substrate in which a display element, a light emitting source element, a power supply necessary for their operation, and an active element having a signal processing function are formed on a light-transmitting flexible substrate. It features a type liquid crystal display element.
実施例の説明 以下実施例により本発明の詳細な説明する。Description of examples The present invention will be explained in detail below with reference to Examples.
第１図は本発明のフレキシブル型液晶表示素子を示す構
造断面略図である。光透過性フレキノプル基板１上に順
次薄膜トランジスタ２．液晶層３゜透明電極４．光透過
性フレキシブル基板６．透明電極６．螢光体物質７．裏
面電極８が形成され、光透過性フレキシブル基板１上に
外部駆動回路９と電源用珂膜電池１ｏを形成することに
よシ構成される。FIG. 1 is a schematic cross-sectional view of the structure of a flexible liquid crystal display element of the present invention. Thin film transistors 2. Liquid crystal layer 3° transparent electrode 4. Light-transmitting flexible substrate 6. Transparent electrode 6. Fluorescent material7. A back electrode 8 is formed, and an external drive circuit 9 and a power supply silica film battery 1o are formed on the light-transmitting flexible substrate 1.
第２図は光透過性フレキシブル基板１２上に形成した薄
膜トランジスタ１６を同一平面上に縦横列に配置した様
子を示す。同図において横列１３（Ｘｌ、Ｘ２・・・・
・・、）は薄膜トランジスタ１５を駆動させる為のゲー
ト電圧印加用であって通常アルミニウムや透明電極材料
が使われる。縦列１４（Ｙｌ、Ｙ２．・・・・・・）は
薄膜トランジスタ１５のソース？Ｊｉ極に接続されてお
り、通常アルミニウムや透明電極材料が使われる。縦列
と横列の交差点、例えばＹ３とＸ３の交差点１６は互い
の電気的接触を防止する為に８１０２等の絶縁物を介し
て交差させる。１７は薄膜トランジスタ１５のドレイン
電極であり、光透過性の酸化インジウム、酸化錫が使用
できる。薄膜トランジスタ１５の活性領域は通常セレン
化カドミウム、硫化カドミウムやアモルフ−７スシリコ
ン等が使用できる。また薄膜トランジスタのゲート絶縁
膜としては酸化シリコン、酸化アルミニウム等が使用で
きる。基板１２上に縦横列に配列する薄膜トランジスタ
の形成方法についての詳細は、本発明の主たる要旨では
なく、その形成は通常液晶テレビ等に使用される方法に
よシ可能である。FIG. 2 shows how thin film transistors 16 formed on a light-transmitting flexible substrate 12 are arranged in rows and columns on the same plane. In the same figure, row 13 (Xl, X2...
. . ) is for applying a gate voltage to drive the thin film transistor 15, and usually aluminum or a transparent electrode material is used. Is the column 14 (Yl, Y2...) the source of the thin film transistor 15? It is connected to the Ji electrode and is usually made of aluminum or a transparent electrode material. The intersections of columns and rows, for example, the intersections 16 of Y3 and X3, are crossed through an insulator such as 8102 to prevent electrical contact with each other. 17 is a drain electrode of the thin film transistor 15, and light-transmissive indium oxide or tin oxide can be used. The active region of the thin film transistor 15 can normally be made of cadmium selenide, cadmium sulfide, amorphous silicon, or the like. Furthermore, silicon oxide, aluminum oxide, etc. can be used as the gate insulating film of the thin film transistor. The details of the method for forming the thin film transistors arranged in rows and columns on the substrate 12 are not the main gist of the present invention, and they can be formed by a method normally used for liquid crystal televisions and the like.
これら縦横に配列した薄膜トランジスタの外部からの駆
動は、この同一基板上の周辺部に形成した薄膜トランジ
スタによるシフトレジスターにより、ソース電極及びゲ
ート電極に信号を与え表示部の薄膜トランジスタをスイ
ッチＯＮさせる。そしてこれら薄膜トランジスタ及び螢
光（＊層の駆動用電源も同一基板上に形成した薄型電池
例えば薄型リチウム電池等やアモルファスＳｔ太陽電池
により供給する。These thin film transistors arranged vertically and horizontally are externally driven by a shift register made of thin film transistors formed in the peripheral part on the same substrate, which applies signals to the source electrode and gate electrode to turn on the thin film transistors in the display section. Power for driving these thin film transistors and the fluorescent (* layer) is also supplied by a thin battery such as a thin lithium battery or an amorphous St solar cell formed on the same substrate.
第３図は光透過性フレキシブル基板１９の両面１８ 、
２０が透明電極で形成され、一方の透明電極２０上にエ
レクトロルミネッセンス螢光体層（以下螢光体と称す）
２１を形成し、この螢光体層の裏面電極２２を形成した
ＥＬ螢光体層である。FIG. 3 shows both sides 18 of the light-transmitting flexible substrate 19,
20 is formed of a transparent electrode, and an electroluminescent phosphor layer (hereinafter referred to as phosphor) is formed on one transparent electrode 20.
21 is formed, and a back electrode 22 of this phosphor layer is formed.
透明電極２０は酸化インジウム又は酸化錫によシ形成さ
れ、ＥＬ螢光体２１はセレン化亜鉛、硫化亜鉛等を誘電
体中に分散させて形成させ、電極２゜、２２に電界を印
加することにより発光が可能である。第２図において薄
膜トランジスタ１５を形成した基板と、第３図において
ＥＬ螢光体層を形成した基板とを重ね、２枚の基板間に
液晶を挿入する。これにより上述した第１図に示す構造
を有するフレキシブル型液晶表示素子が形成できる。The transparent electrode 20 is formed of indium oxide or tin oxide, and the EL phosphor 21 is formed by dispersing zinc selenide, zinc sulfide, etc. in a dielectric material, and an electric field is applied to the electrodes 2° and 22. It is possible to emit light. The substrate on which the thin film transistor 15 is formed in FIG. 2 and the substrate on which the EL phosphor layer is formed in FIG. 3 are placed one on top of the other, and a liquid crystal is inserted between the two substrates. As a result, a flexible liquid crystal display element having the structure shown in FIG. 1 described above can be formed.
素示拐料の液晶はツイストネマチック型を使用し、薄膜
トランジスタのｏｔ′Ｊ状態時に液晶に電圧が印加され
動作する。第１図のフレキシブル基板１の前面に偏光板
１１を設置し、液晶の動作時、非動作時におけるＥＬ螢
光体層からの発光をＯＮ 、 ＯＦＦすることにより表
示素子としての機能を良好に行なうことができる。本発
明では薄膜トランジスタ基板と、Ｅ Ｔ−螢光体層基板
とを重ね、この時点で液晶材料を基板間に挿入する方法
について記載したが、薄膜トランジスタ基板と光透過性
のフレキシブル基板上に透明電極を設けた基板とを重ね
、この基板間に液晶材料を挿入し、その後フレキシブル
基板上に形成したＥＬ螢光体素子を重ねる方法も可能で
ある。また第１図において透明電極６とフレキシブル基
板間に偏光板を挿入することも可能であり、又フレキシ
ブル基板に偏光板を使用することも可能である。A twisted nematic type liquid crystal is used for the display material, and a voltage is applied to the liquid crystal to operate when the thin film transistor is in the ot'J state. A polarizing plate 11 is installed on the front surface of the flexible substrate 1 shown in FIG. 1, and by turning on and off the light emitted from the EL phosphor layer when the liquid crystal is in operation and in non-operation, it functions well as a display element. be able to. In the present invention, a method has been described in which a thin film transistor substrate and an ET-phosphor layer substrate are stacked and a liquid crystal material is inserted between the substrates at this point. It is also possible to stack the provided substrates, insert a liquid crystal material between the substrates, and then stack the EL phosphor element formed on the flexible substrate. Further, in FIG. 1, it is also possible to insert a polarizing plate between the transparent electrode 6 and the flexible substrate, and it is also possible to use a polarizing plate for the flexible substrate.
発明の詳細
な説明した如く、本発明の電源と外部・駆動回路、内部
スイッチング回路の能動素子及び液晶表示素子を含む全
機能をフレキシブル基板上に形成した一体型液晶表示素
子は、従来の各機能別に分離した表示素子に比較して表
示素子を曲げても表示機能を損なわないことや、軽量性
、薄型性、形状の自由度大、加工性などの特徴から、そ
の応用が広がることが約束されるものである。すなわち
家屋の壁や曲面を持つ場所にも容易に設置でき、かつそ
のフレキシブル性によシコンパクトに収納でき、持運び
が簡単であること等従来の液晶表示素子に比較してその
利点は極めて高い。As described in detail, the integrated liquid crystal display device of the present invention, in which all functions including the power supply, external/drive circuits, active elements of the internal switching circuit, and liquid crystal display device are formed on a flexible substrate, has all the conventional functions. Compared to separate display elements, the display element does not lose its display function even when bent, and its features such as lightness, thinness, greater flexibility in shape, and workability promise to expand its applications. It is something that In other words, it has extremely high advantages over conventional liquid crystal display elements, such as being able to be easily installed on the walls of houses or on curved surfaces, and its flexibility allows it to be stored compactly and is easy to carry. .
第１図は本発明の実施例におけるフレキシブル型液晶表
示素子を示す構造断面略図、第２図は基板上に縦横列状
態に構成した表示素子の薄膜トランジスタを示す図、第
３図は同じく発光源素子を示す図である。
１・・・・・・フレキシブル基板、２・・・・・・薄膜
トランジスタ、３・・・・・・液晶、４・・・・・・透
明電極、５・・川・フレキシブル基板、６・・・・・・
透明電極、７・・・・・・螢光体層、８・・・・・・裏
面電極、９・・・・・・外部駆動回路、１ｏ・・・・・
・電源用薄膜電池。FIG. 1 is a schematic cross-sectional view of the structure of a flexible liquid crystal display device according to an embodiment of the present invention, FIG. 2 is a diagram showing thin film transistors of the display device arranged in rows and columns on a substrate, and FIG. 3 is a diagram showing a light emitting source device. FIG. 1...Flexible substrate, 2...Thin film transistor, 3...Liquid crystal, 4...Transparent electrode, 5...Flexible substrate, 6... ...
Transparent electrode, 7... Fluorescent layer, 8... Back electrode, 9... External drive circuit, 1o...
・Thin film battery for power supply.
Claims (1)
体層、電極からなる発光源素子を形成するとともに、別
の片側に順次透明電極、液晶層、薄膜トランジスタから
なる表示素子を形成し、かつ」二記発光源累子及び表示
素子に必要な電源及び信号処理機能を有する能動素子を
同一フレキシブル基板上に配置した構造を特徴とするフ
レキシブル型液晶表示素子。A light emitting source element consisting of a transparent electrode, a phosphor layer, and an electrode is sequentially formed on one side of a light-transmitting flexible substrate, and a display element consisting of a transparent electrode, a liquid crystal layer, and a thin film transistor is sequentially formed on the other side, and A flexible liquid crystal display element characterized by a structure in which two light emitting source elements and an active element having power supply and signal processing functions necessary for the display element are arranged on the same flexible substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP154084A JPS60144719A (en) | 1984-01-09 | 1984-01-09 | Flexible type liquid crystal display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP154084A JPS60144719A (en) | 1984-01-09 | 1984-01-09 | Flexible type liquid crystal display element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60144719A true JPS60144719A (en) | 1985-07-31 |
Family
ID=11504354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP154084A Pending JPS60144719A (en) | 1984-01-09 | 1984-01-09 | Flexible type liquid crystal display element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60144719A (en) |
-
1984
- 1984-01-09 JP JP154084A patent/JPS60144719A/en active Pending
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