JP2799082B2 - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JP2799082B2 JP2799082B2 JP3085898A JP8589891A JP2799082B2 JP 2799082 B2 JP2799082 B2 JP 2799082B2 JP 3085898 A JP3085898 A JP 3085898A JP 8589891 A JP8589891 A JP 8589891A JP 2799082 B2 JP2799082 B2 JP 2799082B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- sealing material
- crystal display
- injection port
- display device
- 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.)
- Expired - Lifetime
Links
Landscapes
- Liquid Crystal (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は液晶表示素子（以下、Ｌ
ＣＤと略称）に係り、特に、液晶注入口を紫外線硬化樹
脂からなる封止材にて蓋閉するＬＣＤに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device (hereinafter referred to as "L").
More specifically, the present invention relates to an LCD in which a liquid crystal injection port is closed with a sealing material made of an ultraviolet curable resin.
【０００２】[0002]
【従来の技術】図３は従来のＬＣＤを示す横断面図で、
概ね次のようにして製造される。まず、一方の電極基板
１の周縁部にエポキシ系樹脂等からなるシール材２を枠
状に塗布形成してから他方の電極基板（図示せず）を積
層し、シール材２を介して両電極基板を接合した後、シ
ール材２の開口部である液晶注入口２ａを介して該シー
ル材２の内側に液晶３を注入し、しかる後、液晶注入口
２ａに紫外線硬化樹脂からなる封止材４を塗布し、そこ
に紫外線５を照射して該封止材４を硬化させることによ
り、液晶３を封止したセルが作製される。なお、同図中
の符号６は、封止材４が表示部にくい込まないようにす
るために両電極基板間に介設したストツパ壁で、シール
材２と同じ材料からなる。2. Description of the Related Art FIG. 3 is a cross-sectional view showing a conventional LCD.
It is manufactured generally as follows. First, a sealing material 2 made of an epoxy-based resin or the like is applied and formed on the periphery of one electrode substrate 1 in a frame shape, and then the other electrode substrate (not shown) is laminated. After bonding the substrates, the liquid crystal 3 is injected into the inside of the sealing material 2 through the liquid crystal injection port 2a which is an opening of the sealing material 2, and thereafter, a sealing material made of an ultraviolet curable resin is injected into the liquid crystal injection port 2a. 4 is applied, and the sealing material 4 is cured by irradiating ultraviolet rays 5 thereon, whereby a cell in which the liquid crystal 3 is sealed is produced. Reference numeral 6 in the figure denotes a stopper wall interposed between the two electrode substrates to prevent the sealing material 4 from entering the display portion, and is made of the same material as the sealing material 2.
【０００３】[0003]
【発明が解決しようとする課題】ところで、上述した従
来のＬＣＤにあつては、封止材４に紫外線５を照射して
これを硬化させる際に、液晶注入口２ａ近傍のシール材
２にも紫外線が照射されることになるが、シール材２に
多量の紫外線が照射されると、そのエネルギーによりシ
ール材２中の微量な不完全硬化成分が分解されて液晶３
中に拡散してしまうので、液晶３の比抵抗が低下し、電
圧印加時の液晶分子の立上り特性や電荷保持率が劣化す
るという不具合があつた。その結果、従来のＬＣＤは、
液晶注入口２ａの近傍で表示コントラストにむらを生
じ、表示品位を損なう虞れがあつた。By the way, in the above-mentioned conventional LCD, when the sealing material 4 is irradiated with ultraviolet rays 5 and cured, the sealing material 2 in the vicinity of the liquid crystal injection port 2a is also cured. Ultraviolet rays are irradiated. When a large amount of ultraviolet rays is irradiated on the sealing material 2, a small amount of incompletely cured component in the sealing material 2 is decomposed by the energy and the liquid crystal 3 is irradiated.
As a result, the specific resistance of the liquid crystal 3 is reduced, and the rising characteristics and charge retention of liquid crystal molecules when voltage is applied are deteriorated. As a result, conventional LCDs
The display contrast may be uneven near the liquid crystal injection port 2a, and the display quality may be impaired.
【０００４】本発明はこのような事情に鑑みてなされた
もので、その目的は、封止工程の紫外線照射に起因する
表示コントラストのむらを回避したＬＣＤを提供するこ
とにある。[0004] The present invention has been made in view of such circumstances, and an object of the present invention is to provide an LCD that avoids uneven display contrast due to ultraviolet irradiation in a sealing step.
【０００５】[0005]
【課題を解決するための手段】上記した本発明の目的
は、枠状に塗布形成したシール材の外側で液晶注入口の
近傍に、紫外線を遮断するための遮光壁を付設すること
によつて達成される。An object of the present invention is to provide a light-shielding wall for blocking ultraviolet rays outside a frame-shaped sealing material and near a liquid crystal injection port. Achieved.
【０００６】[0006]
【作用】上記手段によれば、封止工程で液晶注入口近傍
に紫外線が照射されても、遮光壁が紫外線バリアとして
機能するのでシール材にはほとんど紫外線が照射され
ず、よつてシール材中の成分が紫外線で分解される虞れ
がなくなり、また、遮光壁自体は液晶と接していないの
で紫外線が照射されても液晶に悪影響を及ぼす虞れはな
い。According to the above-mentioned means, even if the liquid crystal injection port is irradiated with ultraviolet rays in the sealing step, the sealing material is hardly irradiated with ultraviolet rays because the light shielding wall functions as an ultraviolet barrier. There is no danger of the components being decomposed by ultraviolet rays, and the light-shielding wall itself is not in contact with the liquid crystal.
【０００７】[0007]
【実施例】以下、本発明の実施例を図に基づいて説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
【０００８】図１は本発明の一実施例に係るＬＣＤの横
断面図、図２はこのＬＣＤの要部縦断面図であり、先に
説明した図３と対応する部分には同一符号が付してあ
る。FIG. 1 is a cross-sectional view of an LCD according to an embodiment of the present invention, and FIG. 2 is a vertical cross-sectional view of a main part of the LCD. Parts corresponding to those of FIG. I have.
【０００９】図１，２に示すＬＣＤは、２枚の電極基板
１，７間に介設した枠状のシール材２の外側で液晶注入
口２ａの近傍に、該シール材２と同じ材料からなり紫外
線バリアとして機能する帯状の遮光壁８が一対付設して
ある。すなわち、液晶注入口２ａの両脇からシール材２
に沿つて延びるこれらの遮光壁８は、紫外線硬化樹脂か
らなる封止材４を硬化させる封止工程で紫外線５が照射
される場所に位置するので、紫外線５のエネルギーによ
つて不完全硬化成分が分解されやすいが、これらの遮光
壁８はシール材２の外側に位置するので液晶３とは接触
せず、よつて分解成分が液晶３に悪影響を及ぼす虞れは
ない。また、遮光壁８の存在によりシール材２にはほと
んど紫外線５が照射されなくなるので、シール材２中の
不完全硬化成分が紫外線５のエネルギーで分解される虞
れもない。したがつて、封止工程の紫外線照射に起因す
るＬＣＤの表示コントラストのむらが回避でき、常に良
好な表示品位が期待できる。しかも、遮光壁８はシール
材２と一括にパターニングすれば良いので、工程数の増
加を伴わないという利点がある。The LCD shown in FIGS. 1 and 2 is made of the same material as the sealing material 2 outside the frame-shaped sealing material 2 interposed between the two electrode substrates 1 and 7 and near the liquid crystal injection port 2a. A pair of strip-shaped light shielding walls 8 functioning as an ultraviolet barrier is provided. That is, from both sides of the liquid crystal injection port 2a, the sealing material 2
These light-shielding walls 8 extending along are located at locations where the ultraviolet rays 5 are irradiated in the sealing step of curing the sealing material 4 made of an ultraviolet-curable resin. However, since these light shielding walls 8 are located outside the sealing material 2, they do not come into contact with the liquid crystal 3, so that there is no danger that the decomposed component will adversely affect the liquid crystal 3. Further, since the sealing material 2 is hardly irradiated with the ultraviolet light 5 due to the presence of the light shielding wall 8, there is no possibility that the incompletely cured component in the sealing material 2 is decomposed by the energy of the ultraviolet light 5. Therefore, it is possible to avoid unevenness in the display contrast of the LCD due to the irradiation of the ultraviolet rays in the sealing step, and it is possible to always expect good display quality. In addition, since the light shielding wall 8 may be patterned together with the sealing material 2, there is an advantage that the number of steps is not increased.
【００１０】なお、上記実施例の特に説明しない部分の
構成は、図３に示した従来例と同等である。The configuration of the above-described embodiment, which is not particularly described, is the same as that of the conventional example shown in FIG.
【００１１】また、遮光壁８をシール材２とは異なる材
料で形成しても、紫外線バリアとしての機能を持たせる
ことはできる。ただし、生産性を考慮すると、両者を同
じ材料にて一括形成できるようにすることが好ましい。Further, even if the light shielding wall 8 is formed of a material different from that of the sealing material 2, the function as an ultraviolet barrier can be provided. However, in consideration of productivity, it is preferable that both can be collectively formed of the same material.
【００１２】[0012]
【発明の効果】以上説明したように本発明によれば、液
晶注入口の近傍に付設した遮光壁がシール材の紫外線バ
リアとして機能し、該シール材中の成分が封止工程の紫
外線照射で分解されないように配慮してあるので、液晶
注入口の近傍で懸念されていた表示コントラストのむら
が回避でき、そのためＬＣＤに常に良好な表示品位を期
待することができる。As described above, according to the present invention, the light-shielding wall provided near the liquid crystal injection port functions as an ultraviolet barrier for the sealing material, and the components in the sealing material are irradiated by the ultraviolet irradiation in the sealing step. Since the liquid crystal is not decomposed, it is possible to avoid uneven display contrast in the vicinity of the liquid crystal inlet, so that the LCD can always be expected to have good display quality.
【図１】本発明の一実施例に係るＬＣＤの横断面図であ
る。FIG. 1 is a cross-sectional view of an LCD according to an embodiment of the present invention.
【図２】図１に示すＬＣＤの要部縦断面図である。FIG. 2 is a longitudinal sectional view of a main part of the LCD shown in FIG.
【図３】従来のＬＣＤの横断面図である。FIG. 3 is a cross-sectional view of a conventional LCD.
１，７ 電極基板 ２ シール材 ２ａ 液晶注入口 ３ 液晶 ４ 封止材 ８ 遮光壁 1, 7 electrode substrate 2 sealing material 2a liquid crystal injection port 3 liquid crystal 4 sealing material 8 light shielding wall
Claims (2)
枚の電極基板を積層・接着した後、上記シール材の開口
部である液晶注入口を介して該シール材の内側に液晶を
注入し、しかる後、上記液晶注入口に紫外線硬化樹脂か
らなる封止材を塗布し、該封止材に紫外線を照射して硬
化させることにより上記液晶を封止したセルが作製され
る液晶表示素子において、上記シール材の外側で上記液
晶注入口の近傍に、紫外線を遮断するための遮光壁を付
設したことを特徴とする液晶表示素子。2. A method according to claim 1, further comprising the steps of:
After laminating and bonding the two electrode substrates, liquid crystal is injected into the inside of the sealing material through a liquid crystal injection port, which is an opening of the sealing material. A liquid crystal display element in which a cell in which the liquid crystal is sealed is prepared by applying a stopper and irradiating the sealing material with ultraviolet rays to cure the liquid crystal, in the vicinity of the liquid crystal injection port outside the sealing material, A liquid crystal display device comprising a light shielding wall for blocking ultraviolet rays.
ル材と同じ材料からなることを特徴とする液晶表示素
子。2. The liquid crystal display device according to claim 1, wherein the light shielding wall is made of the same material as the sealing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3085898A JP2799082B2 (en) | 1991-03-27 | 1991-03-27 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3085898A JP2799082B2 (en) | 1991-03-27 | 1991-03-27 | Liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04296822A JPH04296822A (en) | 1992-10-21 |
| JP2799082B2 true JP2799082B2 (en) | 1998-09-17 |
Family
ID=13871691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3085898A Expired - Lifetime JP2799082B2 (en) | 1991-03-27 | 1991-03-27 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2799082B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7113241B2 (en) * | 2001-08-31 | 2006-09-26 | Sharp Kabushiki Kaisha | Liquid crystal display and method of manufacturing the same |
| JP2003188046A (en) * | 2001-12-19 | 2003-07-04 | Shizuki Electric Co Inc | Metallized film capacitor |
-
1991
- 1991-03-27 JP JP3085898A patent/JP2799082B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04296822A (en) | 1992-10-21 |
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