JPS63200127A - Liquid crystal image display device - Google Patents
Liquid crystal image display deviceInfo
- Publication number
- JPS63200127A JPS63200127A JP62033697A JP3369787A JPS63200127A JP S63200127 A JPS63200127 A JP S63200127A JP 62033697 A JP62033697 A JP 62033697A JP 3369787 A JP3369787 A JP 3369787A JP S63200127 A JPS63200127 A JP S63200127A
- Authority
- JP
- Japan
- Prior art keywords
- image display
- liquid crystal
- display device
- electrodes
- display area
- 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 31
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 239000003566 sealing material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 239000013078 crystal Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000005516 engineering process 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
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000007704 transition Effects 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】
〔産業上の利用分計〕
本発明は、液晶ｌｊ像表示装置のＴＦＴ基板構造に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application] The present invention relates to a TFT substrate structure for a liquid crystal lj image display device.
従来の液晶画像表示装置のＴＦＴ基板震造は第２図で示
されるように、画素電極５１にすべてタイミング線、デ
ータ線２と結線し１画素電極５ｔ−すべて画像表示用と
して使用するよりな＊ａとなっていた。As shown in FIG. 2, the structure of a TFT substrate in a conventional liquid crystal image display device is such that all pixel electrodes 51 are connected to timing lines and data lines 2, and one pixel electrode 5t is all used for image display. It was a.
しかし、前述の従来技術ではｔｌｉ素電極５の集合体で
あるａｍ表示領斌の境界と、ＴνＴ基板１と対向基板６
を平行に保持し液晶８を封止するためのシール材７との
間の見切領域に存在する液晶は、全く駆動されないのに
対して１画像表示領域内の液晶は常に駆動されているた
め、それらの接するＩｍ像表示領域境界部では１本巣期
待される駆動特性を概尚部分の液晶が持たなくなるとい
う問題点を有していた。具体的に社＊像表示領域境界部
から十分離れた部分の表示特性に対し、前述境界部分の
表示特性が劣ってしまい、コントラストのパラツキなど
を生じて％１ｍ庫表示領域全体でみれば、ムラのある表
示となって込た。However, in the prior art described above, the boundary between the am display area, which is an aggregate of the tli element electrodes 5, and the TνT substrate 1 and the counter substrate 6
The liquid crystal existing in the parting area between the liquid crystal 8 and the sealing material 7 for sealing the liquid crystal 8 is not driven at all, whereas the liquid crystal within one image display area is always driven. At the border of the Im image display area where these areas touch, there is a problem in that the liquid crystal in the general portion no longer has the driving characteristics expected for a single cell. Specifically, the display characteristics of the aforementioned boundary portion are inferior to those of the portion sufficiently far away from the boundary of the image display area, resulting in variations in contrast, resulting in unevenness when looking at the entire %1m storage display area. It was a confusing display.
しかも、駆動時間が長くなればそれに従って前述ムラが
顕著になり、また拡大していくという結果も得ている。Moreover, as the driving time becomes longer, the above-mentioned unevenness becomes more noticeable and expands.
そζで本発明は、このような問題点を解決するもので１
画縁表示領域全体にわたって均一なムラの生じない液晶
画家表示装置を提供することにある。 ・
ｃ問題点を解決するための手段〕
本発明の液晶ｒｍｅ表示装置は、タイミング線とデータ
線と、前述タイミング線とデータ線の交点に形成された
？？’ｌ’素子と画素電極からなるＴＦ！基板と、対向
基板をシール材を用いて平行に保持し、前述Ｔ？’ｌ”
基板と、対向基板の間に液晶を封入してなる液晶画像表
示装置において、前述τ？？基板、のＩＩｉ像表示領域
外に電極金膜け、電気的に７０−ティングにし、干渉電
極としたことｔ−特徴とする。Therefore, the present invention solves these problems.
An object of the present invention is to provide a liquid crystal painter display device that is uniform and free from unevenness over the entire picture edge display area. - Means for Solving Problem c] The liquid crystal RME display device of the present invention has a timing line and a data line formed at the intersection of the timing line and the data line. ? TF consisting of 'l' element and pixel electrode! The substrate and the opposing substrate are held in parallel using a sealing material, and the T? 'l'
In a liquid crystal image display device in which a liquid crystal is sealed between a substrate and a counter substrate, the above-mentioned τ? ? It is characterized in that an electrode gold film is applied outside the IIi image display area of the substrate, and electrically formed into a 70-ring to serve as an interference electrode.
以下に本発明の実施列上図面にもとづいて説明する。第
１図においてタイミング線にタイ電ング信号を入力し、
データ線にデータ信号を入力することによって、それら
の交点に形成された？？’ｌ’素子４を介して画素電極
５にデータ信号を入力する。ｌ！ｉｉ素電極５の入力信
号に応じて画素電極５上の液晶８が駆動され、その集合
として画像が表示される。こむで従来の液晶画家表示装
置においてＴＦＴ基板には何も形成されない見切領域に
第１図に示されるような電極を形成し、それらの電極は
電気的に７０−ティングとなりており干渉電極９である
。このような干渉電極は７０−ティングであるため、任
意の電位をとることが可能である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. In Figure 1, input the tie signal to the timing line,
formed at their intersection by inputting a data signal into the data line? ? A data signal is input to the pixel electrode 5 via the 'l' element 4. l! (ii) The liquid crystal 8 on the pixel electrode 5 is driven in accordance with the input signal to the element electrode 5, and an image is displayed as a set. In a conventional liquid crystal display device, electrodes as shown in FIG. 1 are formed in the blank area of the TFT substrate, and these electrodes are electrically 70-tinged, and the interference electrode 9 is used. be. Since such an interference electrode is a 70-ring electrode, it is possible to take any potential.
従って両縁表示領域の常に駆動されている液晶と見切領
域の全く駆動されない液晶との間に、任意の状ａｔとり
うる液晶が存在することになり１液晶の駆動状態から非
駆動状態への遷移がスムーズに行なわれることくなる。Therefore, there is a liquid crystal that can take any arbitrary state between the liquid crystal that is always driven in the both edge display areas and the liquid crystal that is not driven at all in the parting area, so that one liquid crystal can transition from the driven state to the non-driven state. will be carried out smoothly.
このため画家表示領域境界部分の表示特性が劣ってしま
うことなく１画縁表示領域全体にわたって均一なムラの
ない表示を得ることができる。第１図に示される実施列
はタイミング線３本分、データ線３本分に相当する領級
に干渉電極を形成しであるが、経時的なムラの発生、拡
大に対する効果も考慮すれば、干渉電極の形成される領
域は大きければ大きい方が良い。Therefore, it is possible to obtain a uniform and even display over the entire one picture edge display area without degrading the display characteristics at the border of the painter display area. In the implementation array shown in FIG. 1, interference electrodes are formed in areas corresponding to three timing lines and three data lines, but if we also consider the effect on the occurrence and expansion of unevenness over time, The larger the area where the interference electrode is formed, the better.
実験的にはタイ電ング＠１０本分、データ線１０本分の
領域に干渉電極を設ければ、はぼ完全に経時的なムラの
発生や拡大も防ぐことができる。実用的には、干渉電極
を設けることによるＴＵＦＴ基板サイズの大型化などを
考慮してタイ電ング線、データ線をそれぞれ５本分程度
が望ましい、この程度であれば、見切領域部の光遮れｔ
防ぐための印刷や、額縁などのアライメント精度などの
関係ａ−ら。Experimentally, by providing interference electrodes in an area equivalent to 10 tie wires and 10 data lines, it is possible to almost completely prevent the occurrence and expansion of unevenness over time. Practically, considering the increase in the size of the TUFT substrate due to the provision of interference electrodes, it is desirable to have approximately 5 tie wires and data lines each. Ret
Relationships such as printing to prevent problems, alignment accuracy of picture frames, etc.
実質的なｍ像表示領域の縮小や’ｌ’？Ｔ基板の拡大は
、はとんど問題にならない、第３図は干渉電極の形状を
変えたものである。基本的には、 ｒｍ−ｅ表示領域境
界線に添りた方向に関しては干渉電極の電位は同一であ
ることが望ましい、この点を考慮した実施列である。第
４図は第３図に示される実施列の電極形状を変更したも
のである。タイミング線の干渉電極の交叉する部分を極
力少なくシ。Substantial reduction of m image display area or 'l'? Enlargement of the T-substrate is rarely a problem; FIG. 3 shows an example in which the shape of the interference electrode has been changed. Basically, it is desirable that the potentials of the interference electrodes be the same in the direction along the rm-e display area boundary line, and this is an implementation sequence that takes this point into consideration. FIG. 4 shows a modification of the electrode shape of the practical row shown in FIG. 3. Minimize the portion where the timing line intersects with the interference electrode.
ピンホール等による、タイミング線と干渉電極のシ冒−
トを減少させた実施列である。第５図は第４図を示され
た実施列の干渉電極形状をタイミング線に平行なａｍ表
示領域径界に添っても同−電位管もつようにしたもので
、データ線と干渉電極が同一層にない場合の実施列であ
る。Damage to the timing line and interference electrode due to pinholes, etc.
This is an implementation sequence with reduced numbers. Fig. 5 shows the configuration of the interference electrodes in the row shown in Fig. 4 so that they have the same potential tube even along the am display area diameter field parallel to the timing line, so that the data line and the interference electrode are the same. This is an implementation sequence when there is no single layer.
本発明は１以上説明したように液晶画像表示装置のＴＦ
？基板のＩｕ像表示領斌外りまり画素電極の形成されて
いない領域に、干渉電極を設は電気的に７０−ティング
にするという簡単な構造によって、？ｌＥ晶画慮表示装
置における表示性能上の大きな問題であった両津表示領
域周辺部のムラや駆動時間によって発生する経時的なム
ラや、その拡大を制御し、液晶画像表示装置の信頼性を
大幅に向上させる効果がある。The present invention provides a TF for a liquid crystal image display device as described above.
? By using a simple structure in which an interference electrode is provided in an area outside the Iu image display area of the substrate, where no pixel electrode is formed, and electrically connected to 70-Ting. This greatly improves the reliability of LCD image display devices by controlling the unevenness around the Ryotsu display area, the unevenness that occurs over time due to drive time, and its expansion, which are major problems in the display performance of 1E crystal display devices. It has the effect of improving
【図面の簡単な説明】
第１図は１本発明にかかる液晶画像、表示装置の部分平
面図、第２図は従来の液晶画像表示装置の部分平面図、
第３図、第４図及び第５図は本発明にかかゐ液晶画像表
示装置の実施列を示す部分平面図である。
１・・・ＴνＴ基板
２・・・ソース線
３・・・ゲート線
４・・・ＴＦＴ素子
５・・・画素電極
６・・・対向基板
７・・・シール材
８・・・液晶
９・・・干渉電極
以 上
出願人 セイコーエプソン株式会社
第１図[Brief Description of the Drawings] Fig. 1 is a partial plan view of a liquid crystal image display device according to the present invention, and Fig. 2 is a partial plan view of a conventional liquid crystal image display device.
FIGS. 3, 4, and 5 are partial plan views showing an implementation row of a liquid crystal image display device according to the present invention. 1...TνT substrate 2...Source line 3...Gate line 4...TFT element 5...Pixel electrode 6...Counter substrate 7...Seal material 8...Liquid crystal 9...・Interference electrode and above Applicant: Seiko Epson Corporation Figure 1
Claims (1)
線の交点に形成されたＴＦＴ素子と画素電極からなるＴ
ＦＴ基板と、対向基板をシール材を用いて平行に保持し
、前述ＴＦＴ基板と対向基板の間に液晶を封入してなる
液晶画像表示装置において、前述ＴＦＴ基板の画像表示
領域外に電極を設け、電気的にフローティングにし、干
渉電極としたことを特徴とする液晶画像表示装置。A T is made up of a timing line, a data line, a TFT element formed at the intersection of the timing line and the data line, and a pixel electrode.
In a liquid crystal image display device in which an FT substrate and a counter substrate are held in parallel using a sealing material, and a liquid crystal is sealed between the TFT substrate and the counter substrate, electrodes are provided outside the image display area of the TFT substrate. A liquid crystal image display device characterized in that it is electrically floating and has an interference electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62033697A JPS63200127A (en) | 1987-02-17 | 1987-02-17 | Liquid crystal image display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62033697A JPS63200127A (en) | 1987-02-17 | 1987-02-17 | Liquid crystal image display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63200127A true JPS63200127A (en) | 1988-08-18 |
Family
ID=12393608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62033697A Pending JPS63200127A (en) | 1987-02-17 | 1987-02-17 | Liquid crystal image display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63200127A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5373378A (en) * | 1993-04-28 | 1994-12-13 | Matsushita Electric Industrial Co. Ltd. | Active matrix type liquid crystal display device with peripheral pixel electrodes attached directly to signal lines |
| US5600344A (en) * | 1992-02-28 | 1997-02-04 | Canon Kabushiki Kaisha | Liquid crystal display |
| JP2008020660A (en) * | 2006-07-13 | 2008-01-31 | Hitachi Displays Ltd | Liquid crystal display |
-
1987
- 1987-02-17 JP JP62033697A patent/JPS63200127A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5600344A (en) * | 1992-02-28 | 1997-02-04 | Canon Kabushiki Kaisha | Liquid crystal display |
| US5373378A (en) * | 1993-04-28 | 1994-12-13 | Matsushita Electric Industrial Co. Ltd. | Active matrix type liquid crystal display device with peripheral pixel electrodes attached directly to signal lines |
| JP2008020660A (en) * | 2006-07-13 | 2008-01-31 | Hitachi Displays Ltd | Liquid crystal display |
| US8358259B2 (en) | 2006-07-13 | 2013-01-22 | Hitachi Displays, Ltd. | Liquid crystal display device |
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