JPH11212117A - Tft array substrate and liquid crystal display device provided with the substrate - Google Patents

Tft array substrate and liquid crystal display device provided with the substrate

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Publication number
JPH11212117A
JPH11212117A JP1251598A JP1251598A JPH11212117A JP H11212117 A JPH11212117 A JP H11212117A JP 1251598 A JP1251598 A JP 1251598A JP 1251598 A JP1251598 A JP 1251598A JP H11212117 A JPH11212117 A JP H11212117A
Authority
JP
Japan
Prior art keywords
electrode terminal
terminal group
scanning signal
dummy
group
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
Application number
JP1251598A
Other languages
Japanese (ja)
Inventor
Akio Nakayama
明男 中山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Advanced Display Inc
Original Assignee
Advanced Display Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Advanced Display Inc filed Critical Advanced Display Inc
Priority to JP1251598A priority Critical patent/JPH11212117A/en
Publication of JPH11212117A publication Critical patent/JPH11212117A/en
Pending legal-status Critical Current

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  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Wire Bonding (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a liquid crystal display device capable of suppressing the transmission of light irregularly reflected from the rear of a substrate to respective areas between electrode terminal groups formed on the peripheral edge of a display area and displaying images to be easily viewed and having high display quality. SOLUTION: A dummy electrode terminal group 5 constituted of plural dummy electrode terminals 88 is arranged between mutual scanning signal electrode terminal groups 3. The terminal group 5 is constituted to arrange respective dummy electrode terminals 88 at intervals equal to the intervals between respective electrode terminals in the group 3 so as to make the light transmissivity of the group 5 similar to that of the group 3. A distance (d) between each scanning signal electrode terminal group 3 and its adjacent dummy electrode terminal group 5 is set up shorter than the interval W. Consequently the transmissivities of the terminal groups 3, the terminal group 5, a video signal electrode terminal group 4, and a dummy electrode terminal group 6 are almost equal and luminance in respective terminal parts formed on the peripheral edge of the display area is uniformed, so that an image on the display area can easily be viewed.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、マトリックス型表
示装置に用いられるTFTアレイ基板およびこれを備え
た液晶表示装置に関し、特にTFTアレイ基板の表示領
域周縁に配置された電極端子部の構成に関するものであ
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a TFT array substrate used for a matrix type display device and a liquid crystal display device provided with the same, and more particularly, to a structure of an electrode terminal portion arranged on a periphery of a display area of the TFT array substrate. It is.

【0002】[0002]

【従来の技術】図4は、従来のマトリックス型表示装置
の構成を示す平面図である。図において、1はTFTア
レイ基板、2は対向電極基板、3は走査信号電極端子群
3Aが一定間隔で配置された走査信号線用電極端子部、
4は映像信号電極端子群4Aが一定間隔で配置された映
像信号線用電極端子部をそれぞれ示している。マトリッ
クス型表示装置は、図4に示すように、通常、薄膜トラ
ンジスタ(以後TFTと称す)等が設けられたTFTア
レイ基板1と、透明電極、カラーフィルタ及びブラック
マトリクス等が設けられた対向電極基板2の間に液晶等
の表示材料が挟持され、この表示材料に選択的に電圧が
印加されるように構成されている。
2. Description of the Related Art FIG. 4 is a plan view showing the structure of a conventional matrix type display device. In the drawing, 1 is a TFT array substrate, 2 is a counter electrode substrate, 3 is a scanning signal line electrode terminal portion in which scanning signal electrode terminal groups 3A are arranged at regular intervals,
Reference numeral 4 denotes a video signal line electrode terminal portion in which video signal electrode terminal groups 4A are arranged at regular intervals. As shown in FIG. 4, a matrix type display device generally includes a TFT array substrate 1 provided with thin film transistors (hereinafter referred to as TFTs) and a counter electrode substrate 2 provided with a transparent electrode, a color filter, a black matrix, and the like. A display material such as a liquid crystal is sandwiched between them, and a voltage is selectively applied to the display material.

【0003】一般的なマトリックス型表示装置における
TFTアレイの等価回路を図5に示す。図5において、
G1、G2、G3は走査信号線、S1、S2、S3は映
像信号線、Cs1、Cs2、Cs3は保持容量形成用の
Cs配線である。また、12はTFT、13は保持容量
(以後Cs容量と称す)である。TFTアレイ基板1に
おいては、図5に示すように、画素をマトリクス状に配
置する。画素電極は、ITO等の透明電極で形成し、T
FT12をスイッチング素子として画素電極への電荷の
充放電を制御する。TFT12のONとOFFは、走査
信号線G1、G2、G3をゲート電極として実施する。
画素電極は、TFT12を介して映像信号線S1、S
2、S3と接続され、映像信号の信号レベルの大小によ
り、画素電極に充電される電荷量が変化し、画素電極の
電位が設定される。画素電極と、対向電極間の電圧に応
じて、液晶の変位量が変わり、裏面からの透過光量を変
化させる。従って、映像信号線S1、S2、S3の信号
レベルを制御することで、光学的信号変化を制御し、映
像として表示している。すなわち、映像の品質を高める
ためには、走査信号線等の信号レベルの変化による画素
電位の変動をできるだけ小さくする必要があり、画素電
極にCs容量13を設けて、画素の総容量を大きくして
いる。Cs容量13は、対向電極と同電位のCs配線C
s1、Cs2、Cs3と画素電極の間に絶縁膜を設けて
形成する。
FIG. 5 shows an equivalent circuit of a TFT array in a general matrix type display device. In FIG.
G1, G2, and G3 are scanning signal lines, S1, S2, and S3 are video signal lines, and Cs1, Cs2, and Cs3 are Cs wirings for forming storage capacitors. Reference numeral 12 denotes a TFT, and reference numeral 13 denotes a storage capacitor (hereinafter, referred to as a Cs capacitor). In the TFT array substrate 1, the pixels are arranged in a matrix as shown in FIG. The pixel electrode is formed of a transparent electrode such as ITO,
The FT 12 is used as a switching element to control charging and discharging of charges to the pixel electrode. The TFT 12 is turned on and off by using the scanning signal lines G1, G2, and G3 as gate electrodes.
The pixel electrodes are connected to the video signal lines S1, S via the TFT12.
2, S3, the amount of charge charged to the pixel electrode changes according to the level of the video signal, and the potential of the pixel electrode is set. The amount of displacement of the liquid crystal changes according to the voltage between the pixel electrode and the counter electrode, and the amount of light transmitted from the back surface changes. Therefore, by controlling the signal levels of the video signal lines S1, S2, and S3, the optical signal change is controlled and displayed as a video. That is, in order to improve the image quality, it is necessary to minimize the fluctuation of the pixel potential due to a change in the signal level of the scanning signal line or the like. The Cs capacitor 13 is provided in the pixel electrode to increase the total capacitance of the pixel. ing. The Cs capacitance 13 is a Cs wiring C having the same potential as the counter electrode.
It is formed by providing an insulating film between s1, Cs2, and Cs3 and the pixel electrode.

【0004】以上のようなマトリックス型表示装置にお
いて、走査信号線G1、G2、G3に走査信号を入力す
るためには、図4の走査信号電極端子群3Aに、フレキ
シブル基板等を張り付け、外部から信号を供給してい
る。図6は、従来のTFTアレイ基板の走査信号線用電
極端子部を示す拡大図である。図において、7は電極端
子、8はダミー端子を示している。このように、走査信
号電極端子群3Aは、複数の電極端子7とダミー端子8
より構成されている。なお、映像信号の入力は、走査信
号電極端子群3Aと同様な映像信号電極端子群4Aを用
いて実施する。
In the matrix type display device described above, in order to input a scanning signal to the scanning signal lines G1, G2, G3, a flexible substrate or the like is attached to the scanning signal electrode terminal group 3A in FIG. Supplying signal. FIG. 6 is an enlarged view showing a scanning signal line electrode terminal of a conventional TFT array substrate. In the figure, 7 indicates an electrode terminal, and 8 indicates a dummy terminal. As described above, the scanning signal electrode terminal group 3A includes the plurality of electrode terminals 7 and the dummy terminals 8.
It is composed of The input of the video signal is performed using the video signal electrode terminal group 4A similar to the scanning signal electrode terminal group 3A.

【0005】[0005]

【発明が解決しようとする課題】従来のTFTアレイ基
板における走査信号線用電極端子部や映像信号線用電極
端子部においては、端子群と端子群の間に、端子群と同
様に光を遮光するための金属パターンが設けられておら
ず、後方から乱反射してくる光を透過させてしまうた
め、マトリックス型表示装置を極端な斜め方向から見た
場合に、端子群間が端子群部に比べて明るく見え、隣接
する表示領域の画像が見えにくくなるという問題があっ
た。また、従来、マトリックス型表示装置のセルギャッ
プを均一化させ、表示領域端部の色むら発生を制御する
ために、例えば特開平4−355434号公報に示され
ているようなダミー端子を設ける方法が提案されている
が、従来のダミー端子では、電極端子群部と端子群間で
の光の透過率を同等にするまでには至っておらず、ダミ
ー端子の配置方法に改善の余地があった。
In an electrode terminal portion for a scanning signal line and an electrode terminal portion for a video signal line in a conventional TFT array substrate, light is blocked between the terminal groups similarly to the terminal groups. Since a metal pattern is not provided for the display, the light diffusely reflected from the rear is transmitted, and therefore, when the matrix type display device is viewed from an extremely oblique direction, the distance between the terminal groups is smaller than that of the terminal group portion. There is a problem that an image in an adjacent display area is difficult to see due to a bright appearance. Conventionally, a method of providing a dummy terminal as disclosed in Japanese Patent Application Laid-Open No. 4-355434, for example, in order to equalize the cell gap of a matrix type display device and to control the occurrence of color unevenness at the end of a display area. However, in the conventional dummy terminal, the light transmittance between the electrode terminal group portion and the terminal group has not been equalized, and there is room for improvement in the arrangement method of the dummy terminal. .

【0006】本発明は、上記のような問題点を解消する
ためになされたもので、表示領域周縁の電極端子群間に
おける基板後方から乱反射してくる光の透過を防止し、
表示品質の高い液晶表示装置を得ることを目的とする。
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and prevents transmission of light that is irregularly reflected from the rear of a substrate between electrode terminal groups on the periphery of a display area.
An object is to obtain a liquid crystal display device with high display quality.

【0007】[0007]

【課題を解決するための手段】この発明に係わるTFT
アレイ基板は、透明絶縁性基板上に並設された複数本の
走査信号線と、走査信号線と交差する複数本の映像信号
線と、走査信号線と映像信号線の各交点に設けられた薄
膜トランジスタと、薄膜トランジスタに接続された透明
導電膜よりなる画素電極と、走査信号線または映像信号
線に外部信号を入力する電極端子群を複数群有し、基板
の表示領域周縁に各電極端子群毎に一定の間隔を置いて
設けられた電極端子部と、この電極端子部の各電極端子
群相互間に、複数のダミー電極端子を電極端子群におけ
る電極端子間隔と同様の間隔で配置してなるダミー電極
端子群を備えたものである。また、ダミー電極端子群の
ダミー電極端子は、走査信号線または映像信号線に外部
信号を入力する電極端子とは電気的に独立しているもの
である。
SUMMARY OF THE INVENTION A TFT according to the present invention
The array substrate was provided at a plurality of scanning signal lines arranged in parallel on the transparent insulating substrate, a plurality of video signal lines intersecting with the scanning signal lines, and at each intersection of the scanning signal lines and the video signal lines. A thin film transistor; a pixel electrode made of a transparent conductive film connected to the thin film transistor; and a plurality of electrode terminal groups for inputting external signals to a scanning signal line or a video signal line. And a plurality of dummy electrode terminals are arranged at the same interval as the electrode terminal interval in the electrode terminal group, between the electrode terminal portions provided at a constant interval and each electrode terminal group of the electrode terminal portion. It has a dummy electrode terminal group. The dummy electrode terminals of the dummy electrode terminal group are electrically independent of the electrode terminals for inputting external signals to the scanning signal lines or the video signal lines.

【0008】また、ダミー電極端子群のダミー電極端子
は、走査信号線または映像信号線に外部信号を入力する
電極端子と光の透過率がほぼ同等となる材料で形成され
ているものである。さらに、ダミー電極端子群のダミー
電極端子は、走査信号線または映像信号線に外部信号を
入力する電極端子と同一材料で、同時に形成されている
ものである。また、各電極端子群とこれに隣接するダミ
ー電極端子群の距離は、電極端子群における電極端子間
隔以下とするものである。また、本発明に係わる液晶表
示装置は、上記のいずれかのTFTアレイ基板と、透明
電極及びカラーフィルタ等を有する対向電極基板の間に
液晶が配置されているものである。
The dummy electrode terminals of the dummy electrode terminal group are formed of a material having substantially the same light transmittance as the electrode terminals for inputting external signals to the scanning signal lines or the video signal lines. Further, the dummy electrode terminals of the dummy electrode terminal group are formed simultaneously with the same material as the electrode terminals for inputting external signals to the scanning signal lines or the video signal lines. The distance between each electrode terminal group and the dummy electrode terminal group adjacent thereto is set to be equal to or less than the electrode terminal interval in the electrode terminal group. Further, in the liquid crystal display device according to the present invention, a liquid crystal is disposed between any of the above-described TFT array substrates and a counter electrode substrate having a transparent electrode, a color filter, and the like.

【0009】[0009]

【発明の実施の形態】実施の形態1.以下に、本発明の
実施の形態1を図について説明する。図1は、本発明の
実施の形態1であるマトリックス型表示装置の構成を示
す平面図である。図において、1は本実施の形態による
TFTアレイ基板であり、透明絶縁性基板上に並設され
た複数本の走査信号線と、この走査信号線と交差する複
数本の映像信号線及び走査信号線と映像信号線の各交点
に設けられた薄膜トランジスタ、薄膜トランジスタに接
続された透明導電膜よりなる画素電極等を備えている。
2は透明電極及びカラーフィルタ等を有し、TFTアレ
イ基板1との間に液晶が配置される対向電極基板、3は
走査信号線に外部信号を入力する電極端子群3AがTF
Tアレイ基板1の表示領域周縁に各電極端子群毎に一定
の間隔を置いて設けられた走査信号線用電極端子部、4
は映像信号線に外部信号を入力する電極端子群4Aを、
走査信号線用電極端子部と同様に配置した映像信号線用
電極端子部、5は走査信号線用電極端子部3の電極端子
群3A相互間に複数のダミー電極端子を配置してなるダ
ミー電極端子群、6は映像信号線用電極端子部4の電極
端子群4A相互間に複数のダミー電極端子を配置してな
るダミー電極端子群をそれぞれ示している。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing the configuration of the matrix type display device according to the first embodiment of the present invention. In the figure, reference numeral 1 denotes a TFT array substrate according to the present embodiment, which includes a plurality of scanning signal lines juxtaposed on a transparent insulating substrate, a plurality of video signal lines intersecting with the scanning signal lines, and a scanning signal. A thin film transistor provided at each intersection of the line and the video signal line, a pixel electrode made of a transparent conductive film connected to the thin film transistor, and the like are provided.
Reference numeral 2 denotes a counter electrode substrate having a transparent electrode, a color filter, and the like, and a liquid crystal disposed between the TFT array substrate 1 and 3. Reference numeral 3 denotes an electrode terminal group for inputting an external signal to a scanning signal line.
Scanning signal line electrode terminals, which are provided at regular intervals for each electrode terminal group on the periphery of the display area of the T array substrate 1;
Represents an electrode terminal group 4A for inputting an external signal to the video signal line,
A video signal line electrode terminal portion arranged in the same manner as the scanning signal line electrode terminal portion, and a dummy electrode 5 is formed by arranging a plurality of dummy electrode terminals between electrode terminal groups 3A of the scanning signal line electrode terminal portion 3. The terminal group 6 indicates a dummy electrode terminal group in which a plurality of dummy electrode terminals are arranged between the electrode terminal groups 4A of the video signal line electrode terminal unit 4.

【0010】本実施の形態におけるマトリックス型表示
装置は、TFTアレイ基板1と対向電極基板2の間に液
晶等の表示材料が挟持され、この表示材料に選択的に電
圧が印加されるように構成されている。TFTアレイ基
板1の表示領域周縁部には、走査信号線及び映像信号線
にそれぞれ走査信号、映像信号を入力するための走査信
号電極端子群3A、映像信号電極端子群4Aが一定の間
隔を置いて設けられ、これらの電極端子群にフレキシブ
ル基板等を張り付け、外部から信号を供給している。
The matrix type display device according to the present embodiment is configured such that a display material such as liquid crystal is sandwiched between a TFT array substrate 1 and a counter electrode substrate 2 and a voltage is selectively applied to the display material. Have been. A scanning signal electrode terminal group 3A and a video signal electrode terminal group 4A for inputting a scanning signal and a video signal to a scanning signal line and a video signal line, respectively, are arranged at regular intervals on the periphery of the display area of the TFT array substrate 1. A flexible substrate or the like is attached to these electrode terminal groups to supply signals from outside.

【0011】図2は、本実施の形態によるTFTアレイ
基板の走査信号線用電極端子部を示す拡大図である。図
において、7は走査信号電極端子群3Aを構成する走査
信号端子である電極端子、8は走査信号電極端子群3A
を構成するダミー電極端子、88はダミー電極端子群5
を構成するダミー電極端子を示している。なお、ダミー
電極端子88は、走査信号線に外部信号を入力する電極
端子7とは電気的に独立しているものである。本実施の
形態では、複数の電極端子7とダミー電極端子8より構
成される走査信号電極端子群3A相互間に、複数のダミ
ー電極端子88より構成されるダミー電極端子群5を配
置したものである。さらに、ダミー電極端子群5は、光
の透過率を走査信号電極端子群3Aと同様にするため、
ダミー電極端子88を、走査信号電極端子群3Aにおけ
る電極端子間隔Wと同様の間隔で配置したものである。
また、各走査信号電極端子群3Aと隣接するダミー電極
端子群5の距離dは、走査信号電極端子群3Aにおける
電極端子間隔W以下とする。
FIG. 2 is an enlarged view showing the scanning signal line electrode terminals of the TFT array substrate according to the present embodiment. In the figure, 7 is an electrode terminal which is a scanning signal terminal constituting the scanning signal electrode terminal group 3A, and 8 is a scanning signal electrode terminal group 3A.
, 88 are dummy electrode terminal groups 5
Are shown. The dummy electrode terminals 88 are electrically independent of the electrode terminals 7 for inputting external signals to the scanning signal lines. In the present embodiment, a dummy electrode terminal group 5 composed of a plurality of dummy electrode terminals 88 is arranged between scanning signal electrode terminal groups 3A composed of a plurality of electrode terminals 7 and dummy electrode terminals 8. is there. Further, the dummy electrode terminal group 5 has the same light transmittance as that of the scanning signal electrode terminal group 3A.
The dummy electrode terminals 88 are arranged at the same interval as the electrode terminal interval W in the scanning signal electrode terminal group 3A.
The distance d between each scanning signal electrode terminal group 3A and the adjacent dummy electrode terminal group 5 is not more than the electrode terminal interval W in the scanning signal electrode terminal group 3A.

【0012】図3は本実施の形態における電極端子の構
造を示す断面図である。図に示すように、電極端子7
は、TFTアレイ基板1上に形成された金属膜9と、金
属膜9に電気的に接続された透明電極10及び保護膜1
1よりなる。また、ダミー電極端子88は、電極端子7
と光の透過率がほぼ同等となる材料で形成されなければ
ならない。よって、走査信号電極端子群3A相互間に配
置されるダミー電極端子群5のダミー電極端子88は、
走査信号電極端子群3Aを構成する電極端子7と同一材
料で、同時に形成することが望ましい。
FIG. 3 is a sectional view showing the structure of the electrode terminal in the present embodiment. As shown in FIG.
Are a metal film 9 formed on the TFT array substrate 1, a transparent electrode 10 electrically connected to the metal film 9, and a protective film 1.
Consists of one. The dummy electrode terminal 88 is connected to the electrode terminal 7.
It must be formed of a material having substantially the same transmittance as that of light. Therefore, the dummy electrode terminals 88 of the dummy electrode terminal group 5 arranged between the scanning signal electrode terminal groups 3A are
It is desirable that the electrode terminals 7 constituting the scanning signal electrode terminal group 3A be formed at the same time with the same material.

【0013】なお、映像信号電極端子群4A相互間に配
置されたダミー電極端子群6についても、上述の走査信
号電極端子群3A相互間に配置されたダミー電極端子群
5と同様に構成する。以上のように構成されたTFTア
レイ基板1では、走査信号電極端子群3Aとダミー電極
端子群5及び映像信号電極端子群4Aとダミー電極端子
群6の光の透過率がほぼ同等となる。このため、このT
FTアレイ基板1を用いた液晶表示装置を極端な斜め方
向から見た場合にも、光の乱反射によって走査信号電極
端子群3Aまたは映像信号電極端子群4Aの間が明るく
見えることがなくなり、表示領域周縁の端子部の輝度が
一様になり、表示領域における映像が見やすくなるとい
う効果がある。
The dummy electrode terminal group 6 arranged between the video signal electrode terminal groups 4A has the same configuration as the dummy electrode terminal group 5 arranged between the above-mentioned scanning signal electrode terminal groups 3A. In the TFT array substrate 1 configured as described above, the scan signal electrode terminal group 3A and the dummy electrode terminal group 5 and the video signal electrode terminal group 4A and the dummy electrode terminal group 6 have substantially the same light transmittance. Therefore, this T
Even when the liquid crystal display device using the FT array substrate 1 is viewed from an extremely oblique direction, irregularities in light do not make the space between the scanning signal electrode terminal group 3A or the video signal electrode terminal group 4A look bright, and the display area There is an effect that the luminance of the peripheral terminal portions becomes uniform, and the image in the display area becomes easy to see.

【0014】[0014]

【発明の効果】以上のように、本発明によれば、複数の
電極端子群相互間に、複数のダミー電極端子を電極端子
群における電極端子間隔と同様の間隔で配置してなるダ
ミー電極端子群を設け、基板後方から乱反射してくる光
の透過を防止したので、表示領域周縁の端子部の輝度が
一様となり、表示品質の高い液晶表示装置を得ることが
できる。
As described above, according to the present invention, a dummy electrode terminal in which a plurality of dummy electrode terminals are arranged between the plurality of electrode terminal groups at the same interval as the electrode terminal interval in the electrode terminal group. Since the group is provided to prevent the transmission of light diffusely reflected from the rear of the substrate, the luminance of the terminal portions on the periphery of the display area becomes uniform, and a liquid crystal display device with high display quality can be obtained.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 本発明の実施の形態1であるマトリックス型
表示装置の構成を示す平面図である。
FIG. 1 is a plan view showing a configuration of a matrix type display device according to a first embodiment of the present invention.

【図2】 本発明の実施の形態1であるTFTアレイ基
板の走査信号電極端子部を示す拡大図である。
FIG. 2 is an enlarged view showing a scanning signal electrode terminal portion of the TFT array substrate according to the first embodiment of the present invention.

【図3】 本発明の実施の形態1であるTFTアレイ基
板の電極端子の構造を示す断面図である。
FIG. 3 is a cross-sectional view illustrating a structure of an electrode terminal of the TFT array substrate according to the first embodiment of the present invention.

【図4】 従来のマトリックス型表示装置の構成を示す
平面図である。
FIG. 4 is a plan view showing a configuration of a conventional matrix type display device.

【図5】 一般的なマトリックス型表示装置におけるT
FTアレイの等価回路を示す図である。
FIG. 5 shows T in a general matrix type display device.
FIG. 3 is a diagram illustrating an equivalent circuit of the FT array.

【図6】 従来のTFTアレイ基板の走査信号電極端子
部を示す拡大図である。
FIG. 6 is an enlarged view showing a scanning signal electrode terminal of a conventional TFT array substrate.

【符号の説明】[Explanation of symbols]

1 TFTアレイ基板、2 対向電極基板、3 走査信
号線用電極端子部、3A 走査信号電極端子群 4 映
像信号線用電極端子部、4A 映像信号電極端子群
5、6 ダミー電極端子群、7 電極端子、8、88
ダミー電極端子、9 金属膜、10 透明電極、11
保護膜、12 薄膜トランジスタ、13 補助容量(C
s容量)。
REFERENCE SIGNS LIST 1 TFT array substrate, 2 counter electrode substrate, 3 scanning signal line electrode terminals, 3 A scanning signal electrode terminal group 4 video signal line electrode terminals, 4 A video signal electrode terminal group
5, 6 dummy electrode terminal group, 7 electrode terminals, 8, 88
Dummy electrode terminal, 9 metal film, 10 transparent electrode, 11
Protective film, 12 thin film transistor, 13 auxiliary capacitance (C
s capacity).

Claims (6)

【特許請求の範囲】[Claims] 【請求項1】 透明絶縁性基板上に並設された複数本の
走査信号線、 上記走査信号線と交差する複数本の映像信号線、 上記走査信号線と上記映像信号線の各交点に設けられた
薄膜トランジスタ、 上記薄膜トランジスタに接続された透明導電膜よりなる
画素電極、 上記走査信号線または上記映像信号線に外部信号を入力
する電極端子群を複数群有し、上記基板の表示領域周縁
に各電極端子群毎に一定の間隔を置いて設けられた電極
端子部、 上記電極端子部の各電極端子群相互間に、複数のダミー
電極端子を上記電極端子群における電極端子間隔と同様
の間隔で配置してなるダミー電極端子群を備えたことを
特徴とするTFTアレイ基板。
A plurality of scanning signal lines arranged side by side on a transparent insulating substrate; a plurality of video signal lines intersecting with the scanning signal lines; and a plurality of scanning signal lines intersecting with the scanning signal lines. A thin film transistor, a pixel electrode made of a transparent conductive film connected to the thin film transistor, a plurality of electrode terminal groups for inputting an external signal to the scanning signal line or the video signal line, and a plurality of electrode terminals on a periphery of a display region of the substrate. An electrode terminal portion provided at a fixed interval for each electrode terminal group, and a plurality of dummy electrode terminals are arranged at the same interval as the electrode terminal interval in the electrode terminal group, between the electrode terminal groups of the electrode terminal portion. A TFT array substrate comprising a dummy electrode terminal group arranged.
【請求項2】 ダミー電極端子群のダミー電極端子は、
走査信号線または映像信号線に外部信号を入力する電極
端子とは電気的に独立していることを特徴とする請求項
1記載のTFTアレイ基板。
2. The dummy electrode terminal of the dummy electrode terminal group,
2. The TFT array substrate according to claim 1, wherein an electrode terminal for inputting an external signal to the scanning signal line or the video signal line is electrically independent.
【請求項3】 ダミー電極端子群のダミー電極端子は、
走査信号線または映像信号線に外部信号を入力する電極
端子と光の透過率がほぼ同等となる材料で形成されてい
ることを特徴とする請求項1または請求項2に記載のT
FTアレイ基板。
3. The dummy electrode terminal of the dummy electrode terminal group,
The T according to claim 1 or 2, wherein the electrode terminal for inputting an external signal to the scanning signal line or the video signal line is formed of a material having substantially the same light transmittance as that of the electrode terminal.
FT array substrate.
【請求項4】 ダミー電極端子群のダミー電極端子は、
走査信号線または映像信号線に外部信号を入力する電極
端子と同一材料で、同時に形成されていることを特徴と
する請求項1〜請求項3のいずれか一項に記載のTFT
アレイ基板。
4. The dummy electrode terminal of the dummy electrode terminal group,
The TFT according to any one of claims 1 to 3, wherein the electrode terminal for inputting an external signal to the scanning signal line or the video signal line is formed of the same material at the same time.
Array substrate.
【請求項5】 各電極端子群とこれに隣接するダミー電
極端子群の距離は、上記電極端子群における電極端子間
隔以下であることを特徴とする請求項1〜請求項4のい
ずれか一項に記載のTFTアレイ基板。
5. The electrode terminal group according to claim 1, wherein a distance between each of the electrode terminal groups and a dummy electrode terminal group adjacent thereto is equal to or less than an electrode terminal interval in the electrode terminal group. 3. The TFT array substrate according to 1.
【請求項6】 請求項1〜請求項5のいずれか一項に記
載のTFTアレイ基板と、透明電極及びカラーフィルタ
等を有する対向電極基板の間に液晶が配置されているこ
とを特徴とする液晶表示装置。
6. A liquid crystal is disposed between the TFT array substrate according to claim 1 and a counter electrode substrate having a transparent electrode, a color filter, and the like. Liquid crystal display.
JP1251598A 1998-01-26 1998-01-26 Tft array substrate and liquid crystal display device provided with the substrate Pending JPH11212117A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1251598A JPH11212117A (en) 1998-01-26 1998-01-26 Tft array substrate and liquid crystal display device provided with the substrate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1251598A JPH11212117A (en) 1998-01-26 1998-01-26 Tft array substrate and liquid crystal display device provided with the substrate

Publications (1)

Publication Number Publication Date
JPH11212117A true JPH11212117A (en) 1999-08-06

Family

ID=11807497

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1251598A Pending JPH11212117A (en) 1998-01-26 1998-01-26 Tft array substrate and liquid crystal display device provided with the substrate

Country Status (1)

Country Link
JP (1) JPH11212117A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2345382A (en) * 1998-12-31 2000-07-05 Samsung Electronics Co Ltd Layout method of a semiconductor device
JP2005049738A (en) * 2003-07-31 2005-02-24 Sanyo Electric Co Ltd Liquid crystal display panel
JP2006302698A (en) * 2005-04-21 2006-11-02 Pioneer Electronic Corp Display panel and manufacturing method of display panel
KR100823485B1 (en) 2006-11-17 2008-04-21 삼성에스디아이 주식회사 Plasma display panel
WO2014129272A1 (en) * 2013-02-19 2014-08-28 堺ディスプレイプロダクト株式会社 Display device
TWI459510B (en) * 2011-07-13 2014-11-01 Chunghwa Picture Tubes Ltd Array substrate of flat display panel
CN107015407A (en) * 2015-12-03 2017-08-04 三星显示有限公司 Display device with virtual terminal

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2345382A (en) * 1998-12-31 2000-07-05 Samsung Electronics Co Ltd Layout method of a semiconductor device
GB2345382B (en) * 1998-12-31 2003-09-24 Samsung Electronics Co Ltd Layout method of semiconductor device
JP2005049738A (en) * 2003-07-31 2005-02-24 Sanyo Electric Co Ltd Liquid crystal display panel
JP2006302698A (en) * 2005-04-21 2006-11-02 Pioneer Electronic Corp Display panel and manufacturing method of display panel
JP4713206B2 (en) * 2005-04-21 2011-06-29 パナソニック株式会社 Manufacturing method of display panel
KR100823485B1 (en) 2006-11-17 2008-04-21 삼성에스디아이 주식회사 Plasma display panel
TWI459510B (en) * 2011-07-13 2014-11-01 Chunghwa Picture Tubes Ltd Array substrate of flat display panel
WO2014129272A1 (en) * 2013-02-19 2014-08-28 堺ディスプレイプロダクト株式会社 Display device
CN104395821A (en) * 2013-02-19 2015-03-04 堺显示器制品株式会社 Display device
US9792867B2 (en) 2013-02-19 2017-10-17 Sakai Display Products Corporation Display apparatus
CN104395821B (en) * 2013-02-19 2017-11-14 堺显示器制品株式会社 Display device
CN107015407A (en) * 2015-12-03 2017-08-04 三星显示有限公司 Display device with virtual terminal

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