JPS62173438A - Liquid crystal display element - Google Patents
Liquid crystal display elementInfo
- Publication number
- JPS62173438A JPS62173438A JP61016304A JP1630486A JPS62173438A JP S62173438 A JPS62173438 A JP S62173438A JP 61016304 A JP61016304 A JP 61016304A JP 1630486 A JP1630486 A JP 1630486A JP S62173438 A JPS62173438 A JP S62173438A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- display element
- powder
- pulverized
- 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 60
- 239000000843 powder Substances 0.000 claims abstract description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000741 silica gel Substances 0.000 claims abstract description 3
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 3
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims 1
- 230000007423 decrease Effects 0.000 abstract description 5
- 230000006866 deterioration Effects 0.000 abstract description 5
- 238000011109 contamination Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 230000000274 adsorptive effect Effects 0.000 abstract 4
- 239000000758 substrate Substances 0.000 description 4
- 239000003463 adsorbent Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
- Liquid Crystal Substances (AREA)
Abstract
Description
【発明の詳細な説明】
〔ａ要〕
本発明は液晶表示素子において、液晶の比抵抗の経時的
な劣化（低抵抗化）全防止するために、液晶中に吸着能
を有する微粉末を混入させることにより、経時変化の低
減をはかったものである。[Detailed Description of the Invention] [Required a] The present invention is a liquid crystal display device in which a fine powder having adsorption ability is mixed into the liquid crystal in order to completely prevent the deterioration (lower resistance) of the specific resistance of the liquid crystal over time. This is intended to reduce changes over time.
本発明は液晶表示素子に係り、特に経時変化の少ない液
晶表示素子に関する。The present invention relates to a liquid crystal display element, and particularly to a liquid crystal display element that exhibits little change over time.
液晶表示素子の信頼性評価の一つとして液晶リーク電流
がらり、液晶の抵抗を長期にわ念り高抵抗に保つことは
、信頼性の高いディスプレイの提供という意味で極めて
重要である。液晶の抵抗が経時的に低下すると液晶素子
駆動上はもちろん、Ｖ内膜、電極への悪影響も生じ大き
な問題となる。One of the reliability evaluations of liquid crystal display elements is to reduce liquid crystal leakage current, and it is extremely important to carefully maintain the resistance of the liquid crystal at a high level over a long period of time in order to provide a highly reliable display. If the resistance of the liquid crystal decreases over time, it will not only affect the driving of the liquid crystal element but also have an adverse effect on the V inner film and electrodes, causing a serious problem.
液晶の経時的な劣化（比抵抗の低下）は主にシール部な
どからの水分等の混入が関係しており、有機系のシール
剤を用いている以上ある程度は避けられないものである
。The deterioration of liquid crystals over time (decrease in specific resistance) is mainly related to the contamination of moisture etc. from the sealing parts, and this is unavoidable to some extent as long as an organic sealant is used.
従来の液晶表示素子の構造を第３図に示す。 The structure of a conventional liquid crystal display element is shown in FIG.
内面に透明電極３．５が形成された２枚のガラス基板２
，６を図示されないスペーサを介して封着中ると共に、
該両基板間の密封空間内に液晶４を封入してなる＠核内
基板の外面には偏光板ｌ。Two glass substrates 2 with transparent electrodes 3.5 formed on their inner surfaces
, 6 are sealed together via a spacer (not shown), and
The liquid crystal 4 is sealed in the sealed space between the two substrates, and a polarizing plate 1 is provided on the outer surface of the inner substrate.
７が配置されている。従来の液晶表示素子におい〔発明
が解決しようとする問題点〕
従来の液晶表示素子におりては、シール材が液晶中に溶
は出した不純物や、侵入した水分等の不納物に対しては
何ら対策がされておらず、とのため経時的に液晶抵抗＃
１け低下し、リーク電流が増加して配向膜や電極に悪影
響金与えるという問題をかかえていた。7 is placed. In the conventional liquid crystal display element [Problem to be solved by the invention] In the conventional liquid crystal display element, the sealing material is not able to prevent impurities dissolved into the liquid crystal or undeliverables such as moisture that has entered the liquid crystal. No countermeasures were taken, and the liquid crystal resistance #
There was a problem that the leakage current decreased by one order of magnitude and the leakage current increased, which adversely affected the alignment film and electrodes.
この液晶抵抗値の低下という問題は、ＴＦＴ駆動液晶表
示素子においては、有効印加電圧の低下につながり、大
きな問題となる。This problem of a decrease in liquid crystal resistance value leads to a decrease in effective applied voltage and becomes a major problem in TFT-driven liquid crystal display elements.
〔間１点を解決するための手段〕
本発明の目的は上記従来の問題点を解消するものであり
、液晶中に吸着能を有する微粉末φ混入することにより
、この目的を達成している。[Means for Solving Problem 1] The object of the present invention is to solve the above-mentioned conventional problems, and this object is achieved by mixing fine powder φ having adsorption ability into the liquid crystal. .
本発明は、液晶層中に吸着能を有する微粉末が混４更
入されているため、外部からシール部等を経て老人して
くる水等の不納物が侵入とともに微粉末に吸着され、液
晶自体の汚染を防ぎ経時的に劣化の少ない液晶表示素子
が得られる。In the present invention, fine powder with adsorption ability is mixed into the liquid crystal layer, so that undelivered substances such as water that enter the liquid crystal layer from the outside through the seal part are adsorbed by the fine powder, and the liquid crystal layer is adsorbed by the fine powder. A liquid crystal display element that prevents contamination of itself and exhibits less deterioration over time can be obtained.
第１図は本発明の実施例による液晶表示素子を示す。 FIG. 1 shows a liquid crystal display device according to an embodiment of the present invention.
従来の液晶表示素子と異る点は液晶中に吸着性微粉末を
含有した液晶９を封入している点である。The difference from conventional liquid crystal display elements is that liquid crystal 9 containing adsorbent fine powder is enclosed in the liquid crystal.
吸着性微粉末としては、１μｍ程度の大きさのシリカゲ
ル粉末を用い、液晶に対して５ｗｔ％混入させた。As the adsorbent fine powder, silica gel powder having a size of about 1 μm was used, and it was mixed in 5 wt % with respect to the liquid crystal.
第２図は本発明の液晶表示素子と従来の液晶表示素子に
おける液晶の比抵抗の経時変化を示すグラフである。第
２図において曲線Ａが本発明１曲線Ｂが従来の場合を示
す。第２図から明らかなように本発明の液晶表示素子で
は液晶の比抵抗は時間が経っても高い値を保っている。FIG. 2 is a graph showing changes over time in specific resistance of liquid crystal in the liquid crystal display element of the present invention and the conventional liquid crystal display element. In FIG. 2, curve A shows the case of the present invention and curve B shows the conventional case. As is clear from FIG. 2, in the liquid crystal display element of the present invention, the specific resistance of the liquid crystal maintains a high value over time.
なお、微粉末として０１〜１μｍ径で、しかもしＷｔチ
程度の混入では何ら表示品質や駆動条件に影響を与える
ものではない。Incidentally, if the fine powder has a diameter of 01 to 1 .mu.m and is mixed with Wt, it will not affect the display quality or driving conditions in any way.
本発明によれば、シール部等を通過し外部から混入する
水分等の不紳物金液晶中に浮遊する吸着性の微粉末によ
り吸着させることにより、液晶の比抵抗の経時的変化全
滅らし信ね性の高い液晶表示素子が得られる。According to the present invention, by adsorbing moisture, etc. that enters from the outside through a sealing part, etc., with the adsorbent fine powder floating in the gold liquid crystal, it is possible to completely eliminate the change over time in the specific resistance of the liquid crystal. A liquid crystal display element with high resilience can be obtained.
第１図は本発明の液晶表示素子断面図、第２図σ本発明
の液晶表示デ子と従来の液晶表示素子の液晶の比抵抗の
静時変化を示すグラフ、第３図は従来の液晶表示素子断
面図を示す。
図において、１，７け少光板、２，６はガラス基板、３
．５は透明ｆｆｉ橙、４は液晶、９は微粉末を含む液晶
を示す。
！
ジ 、 ＼ ２
ゝ り 、
〃 ＼ シ 、
本４６日且／）ンダと、ｅｅ老〉２ズ１考壬り イ１４
が×婆ｊ因
シｔと晶の ｉｔｊ？（、力ｒ め 牙さト？）こイヒ
答２ 囚Figure 1 is a cross-sectional view of the liquid crystal display element of the present invention, Figure 2 is a graph showing static changes in resistivity of the liquid crystal of the liquid crystal display element of the present invention and the conventional liquid crystal display element, and Figure 3 is a graph of the conventional liquid crystal display element. A cross-sectional view of a display element is shown. In the figure, 1 and 7 are light reducing plates, 2 and 6 are glass substrates, and 3
．． 5 indicates transparent ffi orange, 4 indicates liquid crystal, and 9 indicates liquid crystal containing fine powder. ! Ji, ＼ 2 ゝ, 〃 ＼ shi, this 46 days / /)
But what about the old lady and Akira? (, power r me ga sato?) Koihi answer 2 prisoner
Claims (1)
て、該液晶中に吸着能を有する微粉末を混入することを
特徴とする液晶表示素子。 ２、微粉末として中性シリカゲル粉末を用いることを特
徴とする特許請求の範囲第１項記載の液晶表示素子。 ３、微粉末が０．１〜１μｍ径であることを特徴とする
特許請求の範囲第１項又は第２項記載の液晶表示素子。[Scope of Claims] 1. A liquid crystal display element having a liquid crystal layer between a pair of electrodes, characterized in that a fine powder having adsorption ability is mixed into the liquid crystal. 2. The liquid crystal display element according to claim 1, characterized in that a neutral silica gel powder is used as the fine powder. 3. The liquid crystal display element according to claim 1 or 2, wherein the fine powder has a diameter of 0.1 to 1 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61016304A JPS62173438A (en) | 1986-01-28 | 1986-01-28 | Liquid crystal display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61016304A JPS62173438A (en) | 1986-01-28 | 1986-01-28 | Liquid crystal display element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62173438A true JPS62173438A (en) | 1987-07-30 |
Family
ID=11912798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61016304A Pending JPS62173438A (en) | 1986-01-28 | 1986-01-28 | Liquid crystal display element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62173438A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6487685A (en) * | 1987-09-29 | 1989-03-31 | Seimi Chem Kk | Production of liquid crystal composition of high resistivity |
| JPH0627443A (en) * | 1992-04-27 | 1994-02-04 | Nippon Kasei Chem Co Ltd | Liquid crystal device |
| EP0603731A1 (en) * | 1992-12-16 | 1994-06-29 | Hitachi Chemical Company, Ltd. | Purification of liquid crystals and liquid crystal composition |
| US5403511A (en) * | 1989-02-27 | 1995-04-04 | Matsushita Electric Industrial Co., Ltd. | Ferroelectric liquid crystal composition and ferroelectric liquid crystal display device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57204512A (en) * | 1981-06-11 | 1982-12-15 | Sharp Corp | Manufacture of liquid crystal display element |
-
1986
- 1986-01-28 JP JP61016304A patent/JPS62173438A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57204512A (en) * | 1981-06-11 | 1982-12-15 | Sharp Corp | Manufacture of liquid crystal display element |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6487685A (en) * | 1987-09-29 | 1989-03-31 | Seimi Chem Kk | Production of liquid crystal composition of high resistivity |
| US5403511A (en) * | 1989-02-27 | 1995-04-04 | Matsushita Electric Industrial Co., Ltd. | Ferroelectric liquid crystal composition and ferroelectric liquid crystal display device |
| JPH0627443A (en) * | 1992-04-27 | 1994-02-04 | Nippon Kasei Chem Co Ltd | Liquid crystal device |
| EP0603731A1 (en) * | 1992-12-16 | 1994-06-29 | Hitachi Chemical Company, Ltd. | Purification of liquid crystals and liquid crystal composition |
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