JPH0467014A - Liquid crystal display element - Google Patents
Liquid crystal display elementInfo
- Publication number
- JPH0467014A JPH0467014A JP2176279A JP17627990A JPH0467014A JP H0467014 A JPH0467014 A JP H0467014A JP 2176279 A JP2176279 A JP 2176279A JP 17627990 A JP17627990 A JP 17627990A JP H0467014 A JPH0467014 A JP H0467014A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- display
- insulating protection
- coupling treatment
- coupling
- 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.)
- Granted
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 38
- 239000000758 substrate Substances 0.000 claims abstract description 22
- 230000008878 coupling Effects 0.000 claims abstract description 17
- 238000010168 coupling process Methods 0.000 claims abstract description 17
- 238000005859 coupling reaction Methods 0.000 claims abstract description 17
- 230000001681 protective effect Effects 0.000 claims description 12
- 239000012535 impurity Substances 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 239000007822 coupling agent Substances 0.000 description 3
- 239000003566 sealing material Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、液晶表示器の表示パネルに使用される液晶
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 used in a display panel of a liquid crystal display.
第２図は従来の液晶表示素子のセル構造を示す断面図で
ある。同図において、ｌａ、ｌｂはガラスあるいはプラ
スチックで形成された一対の透明基板、２ａ、２ｂはこ
の透明基板１ａ、ｌｂ上に形成された透明電極、３は片
方の基板１ａの透明電極２ａ上に設けられた絶縁保護膜
で、両電極間の短絡を防止するために設けられている。FIG. 2 is a sectional view showing the cell structure of a conventional liquid crystal display element. In the figure, la and lb are a pair of transparent substrates made of glass or plastic, 2a and 2b are transparent electrodes formed on the transparent substrates 1a and lb, and 3 is a transparent electrode formed on the transparent electrode 2a of one of the substrates 1a. This insulating protective film is provided to prevent short circuit between both electrodes.
４ａ。4a.
４ｂは配向膜、５は一対の基板１ａ、ｌｂを封止してい
るシール材で、内基板間に液晶６が封入されて液晶層が
形成されている。4b is an alignment film, 5 is a sealing material that seals the pair of substrates 1a and 1b, and liquid crystal 6 is sealed between the inner substrates to form a liquid crystal layer.
−Ｆ記各透明電極２ａ、Ｚｂは、表示パターンにしたが
って形成されており、この部分が表示部分となる。そし
て、図外の駆動回路により表示内容に応した信号が透明
電極２ａ、Ｚｂに印加され、これによりバックライトな
どを通じてパネルの外部から所望の図形を認識すること
ができる。-F Each transparent electrode 2a, Zb is formed according to a display pattern, and this portion becomes a display portion. Then, a signal corresponding to the display content is applied to the transparent electrodes 2a and Zb by a drive circuit (not shown), so that the desired figure can be recognized from outside the panel through a backlight or the like.
ところで、上記のような従来の液晶表示素子にあフては
、長時間便用していると液晶層に不純物が混り込み、表
示ムラが発生するという問題点があった。However, conventional liquid crystal display devices as described above have a problem in that when they are used for a long time, impurities get mixed into the liquid crystal layer, causing display unevenness.
この発明は、このような問題点に着目してなされたもの
で、表示ムラの発生を抑制した液晶表示素子を提供する
ことを目的としている。The present invention has been made in view of these problems, and an object of the present invention is to provide a liquid crystal display element that suppresses the occurrence of display unevenness.
（！！題を解決するための手段〕
この発明の液晶表示素子は、一対の基板間に液晶を封入
したものにおいて、少なくとも一方の基板の電極上に他
方の基板の電極との間の短絡防止用の絶縁保護膜を設け
、且つこの絶縁保護膜の表面にカップリング処理を施し
、その内側に表示パターンに合わせて選択的に配向膜を
形成し、表示部分以外の領域で上記カップリング処理を
施した面と液晶層とを接触させたものであり、また、前
記基板の表示部分以外の領域に遮光膜を設けたものであ
る。(!!Means for Solving the Problem) The liquid crystal display element of the present invention has a liquid crystal sealed between a pair of substrates, in which at least an electrode of one substrate is provided to prevent short circuit between the electrode of the other substrate and the liquid crystal display element of the present invention. An insulating protective film is provided for the display, and the surface of this insulating protective film is subjected to a coupling treatment. An alignment film is selectively formed inside the insulating protective film according to the display pattern, and the coupling treatment is performed in areas other than the display area. The coated surface is brought into contact with the liquid crystal layer, and a light shielding film is provided in an area other than the display area of the substrate.
（作用）
この発明の液晶表示素子においては、絶縁保護膜の表面
にカップリング処理が施され、この面と液晶層とが接触
しているので、液晶層中の不純物がこの処理面で吸着さ
れ、液晶の純度か向上する。(Function) In the liquid crystal display element of the present invention, the surface of the insulating protective film is subjected to coupling treatment, and this surface is in contact with the liquid crystal layer, so that impurities in the liquid crystal layer are adsorbed on this treated surface. , improve the purity of liquid crystal.
（実施例〕
第１図はこの発明の一実施例による液晶表示素子の構成
を示す断面図であり、第２図と同一符号は同一構成部分
を示している。この液晶表示素子は、一対のガラスある
いはプラスチックの透明基板１ａ、ｌｂの間に液晶６を
封入したものであり、内基板１ａ、ｌｂの側部はシール
材５により互いに貼り合わされて封止されている。そし
て、一方の基板１ａの透明電極２ａ上には他方の基板１
ｂの透明電極２ｂとの間の短絡防止用の絶縁保護膜３が
塗布法によって全面に設けられ、且つこの絶縁保護膜３
の表面３ａはカップリング処理が施されている。更にそ
の上（内側）には表示パターンに合わせて同一パターン
形状の配向膜４ａが選択的に形成されており、上記カッ
プリング処理を施した絶縁保護膜３の表面３ａと液晶６
の層とが接触している。(Embodiment) Fig. 1 is a sectional view showing the structure of a liquid crystal display element according to an embodiment of the present invention, and the same reference numerals as in Fig. 2 indicate the same constituent parts. A liquid crystal 6 is sealed between transparent substrates 1a and lb made of glass or plastic, and the sides of the inner substrates 1a and lb are bonded and sealed together with a sealing material 5.One substrate 1a The other substrate 1 is placed on the transparent electrode 2a of
An insulating protective film 3 for preventing short circuit with the transparent electrode 2b of b is provided on the entire surface by a coating method, and this insulating protective film 3
The surface 3a of is subjected to a coupling treatment. Furthermore, an alignment film 4a having the same pattern shape according to the display pattern is selectively formed on top (on the inside) of the alignment film 4a, which connects the surface 3a of the insulating protective film 3 subjected to the coupling treatment and the liquid crystal 6.
layer is in contact with the
また、他方の基板１ｂの透明電極２ｂ上（は全面に配向
膜４ｂが形成され、表示部分以外、つまり表示パターン
以外の領域には遮光膜（マスク）７が設けられている。Further, an alignment film 4b is formed on the entire surface of the transparent electrode 2b of the other substrate 1b, and a light shielding film (mask) 7 is provided in a region other than the display portion, that is, a region other than the display pattern.
上記絶縁保護＠３の材質としては、Ｓｉｏ２等の酸化膜
が使用され、その表面３ａがシランカップリング（５ｉ
ｌａｎｅ ｃｏｕｐｌｉｎｇ）剤等のカップリング剤で
表面処理されている。そして、この処理面が液晶６と接
触しているため、液晶中の不純物がその表面３ａで吸着
され易くなる。したがって、液晶６の純度が向上し、長
時間使用しても表示ムラの発生が抑制される。また、上
記のシランカップリング剤のようなカップリング剤を使
用することで、配向膜４ａの密着強度が高くなり、信頼
性が向上したものとなる。更に、他方の基板１ｂには遮
光膜７が設けられているので、鮮明な表示画像を得るこ
とができる。As the material of the insulation protection@3, an oxide film such as Sio2 is used, and the surface 3a is silane coupling (5i
The surface is treated with a coupling agent such as a lane coupling agent. Since this treated surface is in contact with the liquid crystal 6, impurities in the liquid crystal are easily adsorbed on the surface 3a. Therefore, the purity of the liquid crystal 6 is improved, and the occurrence of display unevenness is suppressed even when used for a long time. Further, by using a coupling agent such as the above-mentioned silane coupling agent, the adhesion strength of the alignment film 4a is increased, and reliability is improved. Furthermore, since the other substrate 1b is provided with a light shielding film 7, a clear display image can be obtained.
（発明の効果）
以上のように、この発明によれば、電極上に設けた絶縁
保護膜の表面にカップリング処理を施し、その上に配向
膜を表示パターンに合わせて選択的に形成してカップリ
ング処理面と液晶層とを接触させたため、液晶中の不純
物がカップリング処理面に吸着され易くなり、液晶の純
度が向上し、長時間使用しても表示ムラの発生が抑制さ
れるという効果がある。(Effects of the Invention) As described above, according to the present invention, a coupling treatment is performed on the surface of an insulating protective film provided on an electrode, and an alignment film is selectively formed thereon in accordance with a display pattern. By bringing the coupling treated surface into contact with the liquid crystal layer, impurities in the liquid crystal are more likely to be adsorbed to the coupling treated surface, improving the purity of the liquid crystal and suppressing display unevenness even after long periods of use. effective.
第１図はこの発明の一実施例を示す断面図、第２図は従
来の液晶表示素子を示す断面図である。
ｌａ、１ｂ＝−透明基板
２ａ、２ｂ−−−一透明電極
３・−・・・絶縁保護膜
３ａ・−一表面
４ａ、４ｂ−−−−配向膜
５−−シール材
６−−液晶
７−・−遮光膜
出願人 スタンレー電気株式会社
６７一FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a sectional view showing a conventional liquid crystal display element. la, 1b=-Transparent substrates 2a, 2b----Transparent electrode 3---Insulating protective film 3a---One surface 4a, 4b---Alignment film 5---Sealing material 6---Liquid crystal 7- - Light-shielding film applicant Stanley Electric Co., Ltd. 67-1
Claims (2)
いて、少なくとも一方の基板の電極上に他方の基板の電
極との間の短絡防止用の絶縁保護膜を設け、且つこの絶
縁保護膜の表面にカップリング処理を施し、その内側に
表示パターンに合わせて選択的に配向膜を形成し、表示
部分以外の領域で上記カップリング処理を施した面と液
晶層とを接触させたことを特徴とする液晶表示素子。(1) In a liquid crystal display element in which a liquid crystal is sealed between a pair of substrates, an insulating protective film is provided on the electrodes of at least one substrate to prevent short circuits with the electrodes of the other substrate, and this insulating protective film is A feature is that the surface is subjected to coupling treatment, an alignment film is selectively formed on the inner side according to the display pattern, and the surface subjected to the coupling treatment is brought into contact with the liquid crystal layer in an area other than the display area. A liquid crystal display element.
ことを特徴とする請求項１記載の液晶表示素子。(2) The liquid crystal display element according to claim 1, characterized in that a light shielding film is provided in a region other than the display portion of the substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2176279A JP2572296B2 (en) | 1990-07-05 | 1990-07-05 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2176279A JP2572296B2 (en) | 1990-07-05 | 1990-07-05 | Liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0467014A true JPH0467014A (en) | 1992-03-03 |
| JP2572296B2 JP2572296B2 (en) | 1997-01-16 |
Family
ID=16010805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2176279A Expired - Lifetime JP2572296B2 (en) | 1990-07-05 | 1990-07-05 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2572296B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008032780A (en) * | 2006-07-26 | 2008-02-14 | Seiko Epson Corp | Method for manufacturing electro-optical device, and electro-optical device, and electronic apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58139123A (en) * | 1982-02-12 | 1983-08-18 | Casio Comput Co Ltd | Removing method of unnecessary part of film for orientation of liquid crystal |
| JPS62103020U (en) * | 1985-12-16 | 1987-07-01 | ||
| JPH02110431A (en) * | 1988-10-20 | 1990-04-23 | Optrex Corp | Liquid crystal display device |
-
1990
- 1990-07-05 JP JP2176279A patent/JP2572296B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58139123A (en) * | 1982-02-12 | 1983-08-18 | Casio Comput Co Ltd | Removing method of unnecessary part of film for orientation of liquid crystal |
| JPS62103020U (en) * | 1985-12-16 | 1987-07-01 | ||
| JPH02110431A (en) * | 1988-10-20 | 1990-04-23 | Optrex Corp | Liquid crystal display device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008032780A (en) * | 2006-07-26 | 2008-02-14 | Seiko Epson Corp | Method for manufacturing electro-optical device, and electro-optical device, and electronic apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2572296B2 (en) | 1997-01-16 |
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