JPH04180020A - Liquid crystal electrooptical element - Google Patents
Liquid crystal electrooptical elementInfo
- Publication number
- JPH04180020A JPH04180020A JP2309316A JP30931690A JPH04180020A JP H04180020 A JPH04180020 A JP H04180020A JP 2309316 A JP2309316 A JP 2309316A JP 30931690 A JP30931690 A JP 30931690A JP H04180020 A JPH04180020 A JP H04180020A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- polymer
- composite film
- circuit element
- electro
- 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 35
- 229920000642 polymer Polymers 0.000 claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 12
- 239000002131 composite material Substances 0.000 claims abstract description 10
- 239000004988 Nematic liquid crystal Substances 0.000 claims abstract description 6
- 239000010408 film Substances 0.000 claims description 8
- 239000010409 thin film Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000004983 Polymer Dispersed Liquid Crystal Substances 0.000 description 11
- 238000000149 argon plasma sintering Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は、液晶テレビ、液晶プロジェクタ−１液晶デイ
スプレイなどの液晶電気光学素子に関すス
［従来の技術］
高分子・液晶複合膜１（以下ＰＤＬＣと呼ぶ）は、第３
図に示したようにネマチック液晶材料３１に粒子状また
は３次元ネットワーク構造状高分子３２が分散した構造
を持つ。ＰＤＬＣＩは、電圧印加にともなって光散乱状
態から光透過状態に変化する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to liquid crystal electro-optical elements such as liquid crystal televisions and liquid crystal projectors (1) [Prior Art] Polymer/liquid crystal composite film (1) PDLC) is the third
As shown in the figure, it has a structure in which particulate or three-dimensional network structured polymers 32 are dispersed in a nematic liquid crystal material 31. The PDLCI changes from a light scattering state to a light transmitting state as voltage is applied.
このＰＤＬＣをデイスプレィとして使用するには、従来
第３図のように、素子基板１４に形成された回路素子１
２と対向基板１３上に形成された透明電極（共通電極）
１１でＰＤＬＣＩを挟持し、印加電圧で透過光量をコン
トロールすることによって、表示を可能にしていた。In order to use this PDLC as a display, as shown in FIG.
2 and a transparent electrode (common electrode) formed on the counter substrate 13
Display was made possible by sandwiching the PDLCI between 11 and controlling the amount of transmitted light with the applied voltage.
ＰＤＬＣをデイスプレィとして使用すると、従来の液晶
表示素子に不可欠だった偏光板が不必要となるため、明
るい表示素子を得ることが可能である。When PDLC is used as a display, a polarizing plate, which is indispensable to conventional liquid crystal display elements, becomes unnecessary, so it is possible to obtain a bright display element.
［発明が解決しようとする課題］
しかしながら、従来のＰＤＬＣでは、２枚の基板間に高
分子・液晶複合膜を挟持して使用していたため、重い、
割れ易い、体積がかさばるなどの問題点があった。また
、透過光量をＰＤ ＬＣを利用して制御していたため、
明るい表示体を得るには強力なバックライトが必要であ
った。このバックライトの存在は、前記の問題点をより
助長する結果となっていた。[Problems to be solved by the invention] However, in conventional PDLC, a polymer/liquid crystal composite film is sandwiched between two substrates, which makes it heavy and
It had problems such as being easy to break and being bulky. In addition, since the amount of transmitted light was controlled using PDLC,
A powerful backlight was required to obtain a bright display. The presence of this backlight exacerbated the above-mentioned problems.
本発明はこのような課題を解決するためになされたもの
で、その目的とするところは、従来一般に対向基板状に
形成していた透明電極を直接ＰＤＬＣ上に形成すること
によって、対向基板を不必要とし、かつ反射型とするこ
とによってバックライトをなくし、重量、体積を半減し
た明るい表示体を提供することにある。The present invention has been made to solve these problems, and its purpose is to form a transparent electrode directly on the PDLC, which was conventionally generally formed on the counter substrate, thereby making the counter substrate free. The object of the present invention is to provide a bright display whose weight and volume are halved by eliminating the need for a backlight by making it a reflective type.
［課題を解決するための手段］
本発明の液晶電気光学素子は、高分子薄膜中にネマチッ
ク液晶が分散した高分子・液晶複合膜を有する液晶表示
素子において、該液晶素子は回路素子を有する素子基板
上に該高分子・液晶複合膜が形成され、さらにその上に
透明電極が形成され、かつ該回路素子には反射ｔｆＪ、
能を有する部材が使用されていることを特徴とする。[Means for Solving the Problems] The liquid crystal electro-optical element of the present invention is a liquid crystal display element having a polymer/liquid crystal composite film in which nematic liquid crystal is dispersed in a polymer thin film, wherein the liquid crystal element is an element having a circuit element. The polymer/liquid crystal composite film is formed on the substrate, a transparent electrode is further formed on it, and the circuit element has reflective tfJ,
It is characterized by the use of members that have the ability to
［作用コ
本発明の液晶電気光学素子は、液晶の混合割合は、ＰＤ
ＬＣの２５〜９５重量％が望ましい。 ２５重量％以下
ではコントラストが不十分であり、また９５重量％以上
では光散乱能力が低下する。[Function] In the liquid crystal electro-optical element of the present invention, the mixing ratio of liquid crystal is PD
25-95% by weight of LC is desirable. If the amount is less than 25% by weight, the contrast will be insufficient, and if it is more than 95% by weight, the light scattering ability will decrease.
回路素子上に形成される反射機能を有する部材としては
、 Ａｌ、 Ａｇ、 Ａｕ、 Ｃｒ、 Ｎｉ、
Ｐｔ、Ｔｉ、Ｗ等が好ましく使用される。The members having a reflective function formed on the circuit elements include Al, Ag, Au, Cr, Ni,
Pt, Ti, W, etc. are preferably used.
以下、実施例により本発明の詳細な説明する。Hereinafter, the present invention will be explained in detail with reference to Examples.
［実施例］
第１図は、本発明による液晶電気光学素子の断面図であ
る。図中、１はＰＤＬＣｌｌｌは透明電極、１２は回路
素子、１４は素子基板、１５は反射機能を有する部材、
３１はネマチック液晶、３２は粒子状あるいは３次元ネ
ットワーク構造状高分子である。電圧無印加状態ではＰ
Ｉ）ＬＣは光散乱状態であり、透明電極あるいはＴＦＴ
素子により電圧を印加することにより光透過状態に変化
する。[Example] FIG. 1 is a sectional view of a liquid crystal electro-optical element according to the present invention. In the figure, 1 is a transparent electrode PDLCll, 12 is a circuit element, 14 is an element substrate, 15 is a member having a reflective function,
31 is a nematic liquid crystal, and 32 is a particulate or three-dimensional network structured polymer. P when no voltage is applied
I) LC is a light scattering state, transparent electrode or TFT
By applying a voltage to the element, it changes to a light transmitting state.
第２図は、本発明の反射型液晶電気光学素子と従来のＰ
ＤＬＣを使用した透過型液晶電気光学素子との電気光学
特性をそれぞれ比較した図である。FIG. 2 shows the reflective liquid crystal electro-optical element of the present invention and the conventional P
FIG. 4 is a diagram comparing the electro-optical characteristics with a transmission type liquid crystal electro-optical element using DLC.
２１は本発明の反射型素子の電気光学特性であり、２２
は従来のＰＤＬＣを使用した透過型素子の電気光学特性
である。図より明らかなように、対向基板を無くしたこ
とによる特性への影響は事実上無視できるだけでなく、
光散乱状態の透過率が著しく減少することによって、コ
ントラストが増加している。21 is the electro-optical characteristic of the reflective element of the present invention, and 22
is the electro-optical characteristic of a transmissive element using conventional PDLC. As is clear from the figure, the effect of eliminating the opposing substrate on the characteristics is not only virtually negligible, but also
The contrast is increased by significantly reducing the transmittance of the light scattering state.
［発明の効果コ
以上述べたように、本発明によれば、軽量、薄型で高コ
ントラストの液晶デイスプレィを提供することができる
。[Effects of the Invention] As described above, according to the present invention, it is possible to provide a lightweight, thin, and high-contrast liquid crystal display.
第１図は、本発明による液晶電気光学素子の断面図を示
す図。
第２図は、本発明の液晶電気光学素子と従来のＰＤＬＣ
を使用した液晶電気光学素子との電気光学特性をそれぞ
れ比較した図。
第３図は、従来のＰＤＬＣを使用した液晶電気光学素子
を示す図。
Ｉ ＰＤＬＣ
１１透明電極
１２ ＴＰＴ素子
１３ 対向基板
１４ 素子基板
１５ 反射機能を有する部材
２１ 本発明の液晶電気光学素子の電気光学特性２２
従来のＰＤＬＣを使用した液晶電気光学素子の電気光学
特性
３１ ネマチック液晶
３２ 粒子状あるいは３次元ネットワークｍ造状高分子
以上
出願人 セイコーニブソン株式会宇土
代理人 弁理士 鈴木喜三良３ （他 １名）印加電圧
（Ｖ）
第２図FIG. 1 is a diagram showing a cross-sectional view of a liquid crystal electro-optical element according to the present invention. Figure 2 shows the liquid crystal electro-optical element of the present invention and the conventional PDLC.
A diagram comparing the electro-optical characteristics with a liquid crystal electro-optical element using . FIG. 3 is a diagram showing a liquid crystal electro-optical element using conventional PDLC. I PDLC 11 Transparent electrode 12 TPT element 13 Opposing substrate 14 Element substrate 15 Member with reflective function 21 Electro-optical characteristics of liquid crystal electro-optical element of the present invention 22
Electro-optical properties of liquid crystal electro-optical elements using conventional PDLC 31 Nematic liquid crystal 32 Particulate or three-dimensional network structured polymers and above Applicant Seiko Nibson Co., Ltd. Uto Agent Patent attorney Kizora Suzuki 3 (and others 1) Name) Applied voltage (V) Figure 2
Claims (1)
複合膜を有する液晶表示素子において、該液晶素子は回
路素子を有する素子基板上に該高分子・液晶複合膜が形
成されさらにその上に透明電極が形成され、かつ該回路
素子には反射機能を有する部材が使用されていることを
特徴とする液晶電気光学素子。In a liquid crystal display element having a polymer/liquid crystal composite film in which nematic liquid crystal is dispersed in a polymer thin film, the liquid crystal element has the polymer/liquid crystal composite film formed on an element substrate having a circuit element, and a transparent film on top of the polymer/liquid crystal composite film. 1. A liquid crystal electro-optical device, characterized in that an electrode is formed thereon, and a member having a reflective function is used for the circuit element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2309316A JPH04180020A (en) | 1990-11-15 | 1990-11-15 | Liquid crystal electrooptical element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2309316A JPH04180020A (en) | 1990-11-15 | 1990-11-15 | Liquid crystal electrooptical element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04180020A true JPH04180020A (en) | 1992-06-26 |
Family
ID=17991552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2309316A Pending JPH04180020A (en) | 1990-11-15 | 1990-11-15 | Liquid crystal electrooptical element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04180020A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6429914B1 (en) | 1997-12-17 | 2002-08-06 | Matsushita Electric Industrial Co., Ltd. | Polymer dispersion type liquid crystal display panel and its manufacturing method |
| GB2383333A (en) * | 2001-12-18 | 2003-06-25 | Univ Surrey | Synthetic membranes comprising a polymer & dispersed liquid crystal, and membrane-based enzyme biosensors comprising such membranes |
-
1990
- 1990-11-15 JP JP2309316A patent/JPH04180020A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6429914B1 (en) | 1997-12-17 | 2002-08-06 | Matsushita Electric Industrial Co., Ltd. | Polymer dispersion type liquid crystal display panel and its manufacturing method |
| US6630969B2 (en) | 1997-12-17 | 2003-10-07 | Matsushita Electric Industrial Co., Ltd. | Polymer dispersion type liquid crystal display panel and manufacturing method thereof |
| GB2383333A (en) * | 2001-12-18 | 2003-06-25 | Univ Surrey | Synthetic membranes comprising a polymer & dispersed liquid crystal, and membrane-based enzyme biosensors comprising such membranes |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100413584B1 (en) | Liquid crystal display device | |
| TW354832B (en) | Electronic device | |
| TWI352853B (en) | Transflective liquid crystal display device | |
| JPH04212928A (en) | Liquid crystal display device | |
| JP2856401B2 (en) | Liquid crystal display device | |
| EP0863428A3 (en) | Liquid crystal display device | |
| JP3284169B2 (en) | Birefringence control type liquid crystal display | |
| JPH0497121A (en) | Liquid crystal display element | |
| JPH04180020A (en) | Liquid crystal electrooptical element | |
| JPH047518A (en) | Liquid crystal electrooptical element | |
| JPH046524A (en) | Liquid crystal electrooptical element | |
| JP2666968B2 (en) | Liquid crystal display device | |
| EP1059557A4 (en) | Liquid-crystal display | |
| CN220752470U (en) | Polarizer assembly for transparent display and display device | |
| JP2877152B2 (en) | LCD display | |
| JPH02306217A (en) | Liquid crystal electrooptical element | |
| CN216351323U (en) | Polaroid capable of widening visual angle of liquid crystal display | |
| JP3048872B2 (en) | Liquid crystal display | |
| JP3297606B2 (en) | Color liquid crystal display panel | |
| JPH02302725A (en) | Liquid crystal display device | |
| JP2809722B2 (en) | Liquid crystal display device | |
| JPH05203937A (en) | Liquid crystal display device, window glass, and information equipment | |
| JPH02221919A (en) | Liquid crystal display device | |
| JP3888791B2 (en) | Reflective display device | |
| JPH02144518A (en) | Liquid crystal electrooptic device |