JPH08254712A - Liquid crystal display element - Google Patents

Liquid crystal display element

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Publication number
JPH08254712A
JPH08254712A JP5887495A JP5887495A JPH08254712A JP H08254712 A JPH08254712 A JP H08254712A JP 5887495 A JP5887495 A JP 5887495A JP 5887495 A JP5887495 A JP 5887495A JP H08254712 A JPH08254712 A JP H08254712A
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Japan
Prior art keywords
liquid crystal
electrodes
signal
electrode
pixel
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Pending
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JP5887495A
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Japanese (ja)
Inventor
Keiichiro Ashizawa
Yasuyuki Mishima
Masuyuki Ota
Masahiro Yanai
康之 三島
益幸 太田
雅弘 箭内
啓一郎 芦沢
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Hitachi Ltd
株式会社日立製作所
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Priority to JP5887495A priority Critical patent/JPH08254712A/en
Priority claimed from TW085102194A external-priority patent/TW354380B/en
Publication of JPH08254712A publication Critical patent/JPH08254712A/en
Application status is Pending legal-status Critical

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Abstract

PURPOSE: To provide an active matrix type liquid crystal display element of a transverse electric field system featuring high productivity and high image quality.
CONSTITUTION: This liquid crystal display element has thin-film transistor elements which are disposed at each of pixels and are connected to pixel electrodes 11, signal electrodes 9 and scanning electrodes 4 and wiring means for impressing voltage signal waveforms between common electrodes 2 and the pixel electrodes 11. The pixel electrodes 11 and the common electrodes 2 are arranged within the same substrate plane. Scanning wirings 5 connected to the scanning electrodes and common wirings 3 connected to the common electrodes 2 are arranged in parallel with the row direction of the plural pixels arranged in a matrix form. The common wirings 3 are commonly used by the two pixels connected in the column direction when the signal wirings 10 connected to the signal electrodes 9 are arranged in parallel with the column direction.
COPYRIGHT: (C)1996,JPO

Description

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

【0001】 [0001]

【産業上の利用分野】本発明は、表示むらのない画素構造を備えた高画質のアクティブマトリクス型液晶表示素子に関する。 The present invention relates to an active matrix type liquid crystal display device of high image quality having a pixel structure without display unevenness.

【0002】 [0002]

【従来の技術】パソコンやワープロ、その他の情報機器のための表示デバイスとして、近年、液晶表示素子を用いた薄型,軽量かつ低消費電力の表示装置が多用されるようになった。 BACKGROUND OF THE INVENTION PC and word processors, as a display device for other information devices in recent years, thin using a liquid crystal display device, light weight and low power consumption of the display device becomes to be widely used.

【0003】液晶表示素子は、基本的には水平と垂直に配列された多数の電極で形成されるマトリクスと上記水平と垂直の電極の間に液晶層を有し、2つの電極の交差部分で画素を構成して2次元画像を表示するものである。 The liquid crystal display device is basically in the intersection of the horizontal and a liquid crystal layer between the matrix and the horizontal and vertical electrodes which are formed a number of electrodes arranged vertically, the two electrodes it is for displaying the two-dimensional image constituting a pixel.

【0004】この種の液晶表示素子には、水平と垂直の電極に印加するパルスのタイミングで所定の画素を選択する所謂単純マトリクス方式と、各画像にトランジスタ等の非線型素子を配置して所定の非線型素子を選択する所謂アクティブ・マトリクス方式とがある。 [0004] predetermined in the liquid crystal display device of this type, by a so-called simple matrix type that selects a predetermined pixel at a timing of pulses applied to horizontal and vertical electrodes, the non-linear element such as a transistor to each image arranged there are a so-called active matrix method of selecting non-linear elements of.

【0005】アクティブ・マトリクス方式の液晶表示装置は、マトリクス状に配列された複数の画素電極のそれぞれに対応して非線形素子(スイッチング素子)を設けたものである。 [0005] The liquid crystal display device of active matrix type is one in which a non-linear element (switching element) corresponding to each of the plurality of pixel electrodes arranged in a matrix. 各画素における液晶は理論的には常時駆動(デューティ比 1.0)されているので、時分割駆動方式を採用している、いわゆる単純マトリクス方式と比べてアクティブ方式はコントラストが良く、特にカラー液晶表示装置では欠かせない技術となりつつある。 Since the liquid crystal at each pixel is theoretically are always driven (duty ratio 1.0), employing a time-division driving method, an active method in comparison with the so-called simple matrix type has good contrast, particularly color liquid crystal It is becoming an indispensable technology in the display device. スイッチング素子として代表的なものとしては薄膜トランジスタ(TFT)がある。 There is a thin film transistor (TFT) as a typical example of the switching element.

【0006】従来の薄膜トランジスタ型液晶表示素子では、液晶層を駆動する電極として2枚の基板の界面上に相対向させて形成した透明電極を用いている。 [0006] In the conventional thin film transistor liquid crystal display element, a transparent electrode which is formed by opposed on the interface of the two substrates as an electrode for driving the liquid crystal layer.

【0007】このような電極構造とすることで、液晶に印加する電界の方向は基板の界面にほぼ垂直な方向となる所謂ツイステッドネマチック表示方式に代表される表示方式を採用している。 [0007] With such an electrode structure, the direction of the electric field applied to the liquid crystal adopts a display method represented by a so-called twisted nematic display system to be substantially perpendicular to the interface of the substrate.

【0008】一方、液晶に印加する電界の方向を基板の界面にほぼ平行な方向とする表示方式として、液晶層を駆動する電極を基板面と平行な櫛歯電極対を用いる方式(所謂、横電界方式)が、例えば特公昭63−2190 On the other hand, the direction of the electric field applied to the liquid crystal as a display method according to a direction substantially parallel to the interface of the substrate, a method of an electrode for driving the liquid crystal layer using a parallel pair of comb electrodes and the substrate surface (so-called lateral electric field method), for example, Japanese Patent Publication 63-2190
7号公報により提案されている。 It proposed by 7 JP. しかし、この方式は表示装置として実用化されていない。 However, this method has not been put into practical use as a display device.

【0009】 [0009]

【発明が解決しようとする課題】上記特公昭63−21 The object of the invention is to be Solved by the above-mentioned Japanese Patent Publication 63-21
907号公報には、液晶表示素子としてのマトリクス状に配置された電極の構造、薄膜トランジスタの構造が明らかにされていない。 The 907 discloses the structure of matrix electrodes disposed in a liquid crystal display device, the structure of the thin film transistors were not disclosed.

【0010】基板の界面にほぼ平行な方向に電界を印加するために、画素電極と共通電極を同一基板面内に配置する構造においては、共通配線を配置した分、従来の縦電界方法の液晶表示素子の構造に比べて、表示に寄与する開口面積が低下する。 [0010] In order to apply an electric field in a direction substantially parallel to the interface of the substrate, in the structure disposing the common electrode and the pixel electrode on the same substrate surface, minutes of arranging the common wiring, the liquid crystal of the conventional vertical electric field method compared to the structure of the display device decreases contributes opening area on the display.

【0011】また、マトリクス状に配置された配線の交差点が増加することにより、配線間の短絡不良や信号線間の寄生容量が増加し、スムーズな信号の伝達を妨げるという問題がある。 [0011] By the intersection of lines arranged in a matrix increases, the parasitic capacitance between the short circuit and the signal line between the wirings is increased, there is a problem that prevents the transmission of the smooth signal.

【0012】さらに、従来の縦電界方式の液晶表示素子の画素電極の形状が面形状であるのに対し、横電界方式の画素電極は幅が狭い線形状であるために断線による画素欠陥不良が発生し易いという問題がある。 Furthermore, while the shape of the pixel electrode of the liquid crystal display device of a conventional vertical electric field method is a surface shape, pixel defect failure due to pixel electrodes of the horizontal electric field method is disconnected since the width is narrow line-shaped there is a problem that tends to occur.

【0013】本発明の目的は、上記従来技術の諸問題を解消し、生産性の高い高画質の横電界方式のアクティブ・マトリクス型液晶表示素子を提供することにある。 An object of the present invention is to solve the problems of the prior art, to provide an active matrix type liquid crystal display device of IPS mode of productive quality.

【0014】 [0014]

【課題を解決するための手段】上記目的を達成するために、本発明は、列方向に連続する2画素で共通配線および信号電極を共用する構造としたものである。 To achieve the above object of the Invention The present invention has a structure to share the common wiring and the signal electrodes in two pixels continuous in the column direction.

【0015】すなわち、請求項1に記載の第1の発明は、少なくとも一方が透明な一対の基板と、前記基板の間に挟持されて配向した誘電率異方性と屈折率異方性とを有する液晶組成物と、偏光手段と、マトリクス状に配置された複数の画素と、前記各画素ごとに備えられて画素電極と信号電極および走査電極に接続された薄膜トランジスタ素子と、共通電極と、前記画素電極と前記共通電極との間に電圧信号波形を印加する配線手段とを有し、かつ前記画素電極と共通電極を同一基板面内に配置してなり、前記画素電極と共通電極間に前記基板の面とほぼ平行に形成される電界により前記画素を駆動する液晶表示素子において、前記走査電極に接続された走査配線と前記共通電極に接続された共通配線をマトリクス状に配置された複数の画 [0015] That is, the first invention according to claim 1, and at least one of the pair of transparent substrates, and a refractive index anisotropy and dielectric anisotropy oriented is sandwiched between the substrate a liquid crystal composition having a polarizing means, and a plurality of pixels arranged in a matrix, and thin film transistor elements connected to said pixel electrode and the signal electrode and the scanning electrode provided for each pixel, a common electrode, wherein and a wiring means for applying a voltage signal waveform between the common electrode and the pixel electrode, and be arranged a common electrode and the pixel electrode on the same substrate surface, the between the common electrode and the pixel electrode in the liquid crystal display device which drives the pixel by an electric field which is substantially parallel to the plane of the substrate, the connected common line to the common electrode and connected to the scanning wiring to the scanning electrodes of the plurality arranged in a matrix picture の行方向に平行に配置すると共に、前記信号電極に接続された信号配線を列方向に平行に平行に配置したとき、前記列方向に連続する2画素で前記共通配線を共用してなることを特徴とする。 Along with arranged parallel to the row direction, when the connected signal lines to the signal electrodes arranged in parallel in parallel in the column direction, to become share the common wiring 2 pixels continuous in the column direction and features.

【0016】また、請求項2に記載の第2の発明は、上記第1の発明において、前記列方向に連続する2画素の走査電極と走査配線および前記薄膜トランジスタ素子を互いに対向させて配置し、前記2画素で前記信号電極を共用し、かつ前記信号電極から前記信号配線までの配線を相対向する走査配線の間に配置してなることを特徴とする。 Further, the second invention according to claim 2, in the first aspect, placing the scan electrodes and the scanning lines and the thin film transistor element of two pixels continuous in the column direction are opposed to each other, the share said signal electrodes in two pixels, and characterized by said signal electrode be disposed between the scanning lines facing each of the wiring to the signal line.

【0017】さらに、請求項3に記載の第3の発明は、 Furthermore, the third invention according to claim 3,
上記第2の発明において、1画素内で前記薄膜トランジスタを前記画素電極に対応した数だけ前記走査配線に沿って形成してなることを特徴とする。 In the second invention is characterized by being formed along as many said scanning lines to the TFT corresponding to the pixel electrode in one pixel.

【0018】 [0018]

【作用】列方向に連続する2画素で共通配線および信号電極を共用することにより、配線間の寄生容量の低減、 [Action] by sharing the common wiring and the signal electrodes in two pixels continuous in the column direction, a reduction in parasitic capacitance between the interconnects,
生産性の歩留り向上、画素中の開口部の確保、および共通配線抵抗の低減が可能となる。 Yield productivity, ensuring the opening in the pixel, and the reduction of the common wiring resistance becomes possible.

【0019】すなわち、上記第1の発明の構成において、前記走査電極に接続された走査配線と前記共通電極に接続された共通配線をマトリクス状に配置された複数の画素の行方向に平行に配置し、前記列方向に連続する2画素で前記共通配線を共用して前記信号電極に接続された信号配線を列方向に平行に平行に配置したことで配線間の寄生容量の低減、生産性の歩留り向上、画素中の開口部の確保、および共通配線抵抗の低減が可能となる。 [0019] That is, in the configuration of the first aspect, parallel to the row direction of the plurality of pixels of the connected common line to the common electrode and connected to the scanning wiring to the scanning electrodes arranged in a matrix and, reducing the parasitic capacitance between the wirings by arranged in parallel in parallel the connected signal lines to the signal electrodes share the common wiring 2 consecutive pixels in the column direction in the column direction, the productivity yield improvement, securing the opening in the pixel, and the reduction of the common wiring resistance becomes possible.

【0020】また、上記第2の発明の構成において、上記第1の発明における前記列方向に連続する2画素の走査電極と走査配線および前記薄膜トランジスタ素子を互いに対向させて配置し、前記2画素で前記信号電極を共用し、かつ前記信号電極から前記信号配線までの配線を相対向する走査配線の間に配置したことで、配線間の寄生容量が低減され、生産性の歩留り向上、画素中の開口部の確保、および共通配線抵抗の低減がさらに可能となる。 Further, in the configuration of the second invention, the first one another not face to the scanning electrodes and the scanning lines and the thin film transistor element of two pixels continuous in the column direction in the invention is arranged, in the two pixel share the signal electrode and the from the signal electrode that is disposed between the scanning lines facing each of the wiring to the signal lines is reduced parasitic capacitance between lines, productivity yield improvement, in the pixel securing opening, and reduction of the common wiring resistance becomes more possible.

【0021】さらに、第3の発明の構成において、上記第2の発明の1画素内で前記薄膜トランジスタを前記画素電極に対応した数だけ前記走査配線に沿って形成したことで配線間の寄生容量の低減と、生産性の歩留り向上、画素中の開口部の確保、および共通配線抵抗の低減がなおさらに可能となる。 Furthermore, in the configuration of the third invention, the parasitic capacitance between wires by formed along only a number corresponding to the pixel electrode of the TFT in one pixel the scanning lines of the second aspect of the present invention reduction and yield improvement in productivity, ensuring the opening in the pixel, and the reduction of the common wiring resistance becomes possible even further.

【0022】 [0022]

【実施例】以下、本発明の実施例につき、図面を参照して詳細に説明する。 EXAMPLES Hereinafter, examples of the present invention, with reference to the accompanying drawings.

【0023】まず、本発明の実施例を説明する前に本発明を適用する液晶表示素子の動作を説明する。 [0023] First, the operation of the liquid crystal display device applying the present invention Before describing the embodiments of the present invention.

【0024】図1は本発明を適用する液晶表示素子の動作を説明する1画素分の模式図であって、同図(a)は電圧無印加時の断面図、同図(b)は電圧印加時の断面図、同図(c)は電圧無印加時の平面図、同図(d)は電圧印加時の平面図である。 [0024] Figure 1 is a schematic view of one pixel for explaining the operation of the liquid crystal display device applying the present invention, FIG. (A) is a sectional view of when no voltage is applied, FIG. (B) The voltage upon application of a cross-sectional view and FIG. (c) is a plan of the absence of an applied voltage diagram, Fig. (d) is a plan view of when a voltage is applied. 同図において、1,1'は透明ガラス基板(以下、単に基板とも言う)、2は共通電極、6は絶縁膜、10は信号配線、11は画素電極、 In the figure, 1 and 1 'transparent glass substrate (hereinafter, simply referred to as substrate), 2 is the common electrode, 6 denotes an insulating film, 10 denotes a signal line, 11 denotes a pixel electrode,
13,13'は偏光板、14は偏光板の偏光軸、15は液晶分子の配向方向、16は電界方向、17はブラックマトリクス(BM)、18はカラーフィルタ、19は平坦化膜、20,20'は配向膜、21は液晶(棒状液晶分子)である。 13, 13 'polarizing plate, the polarization axis of the polarization plate 14, 15 alignment direction of liquid crystal molecules, 16 the electric field direction, 17 a black matrix (BM), 18 is a color filter, 19 is flattening film, 20, 20 'alignment film, 21 is a liquid crystal (rod-like liquid crystal molecules).

【0025】この液晶表示素子は、2枚の透明ガラス基板1,1'の一方の基板1に偏光板13'、遮光用のB [0025] The liquid crystal display device, 'a polarizing plate 13 on the substrate 1 one of the' two transparent glass substrates 1, 1, B for shielding
M17、カラーフィルタ18、保護膜19、および配向膜20'を形成してなる。 M17, by forming a color filter 18, the protective film 19, and an alignment film 20 '. また、液晶21を介した他方の基板には偏光板13、配向膜20、信号電極10、画素電極11、共通電極2、各配線および薄膜トランジスタを形成してなる。 The polarizing plate 13 on the other substrate through the liquid crystal 21, alignment layer 20, the signal electrodes 10, pixel electrodes 11, the common electrode 2, made by forming each wire and the thin film transistor. なお、同図には各配線および薄膜トランジスタは図示を省略した。 Each wire and the thin film transistor in the figure is not shown.

【0026】同図(a)(c)に示したように、液晶2 [0026] As shown in FIG. (A) (c), the liquid crystal 2
1は配向膜20,20'により予め電界方向16(同図(b)(d)参照)と基板1,1'の界面とほぼ平行な配向方向15で配向されており、この状態では液晶21 1 is oriented in the alignment direction 15 substantially parallel to the interface of the 'pre-field direction 16 by (FIG. (B) (d) refer) and substrate 1,1' orientation films 20 and 20, in this state the liquid crystal 21
の分子配向方向は偏光板13,13'の偏光軸と交差した関係であるため、画素は非表示の状態にある。 The molecular orientation direction for the relationship intersecting the polarization axis of the polarizing plate 13 and 13 ', the pixels are in a hidden state.

【0027】次に、同図(b)(d)に示したように、 Next, as shown in FIG. (B) (d),
ガラス基板1に形成した共通電極2と画素電極11間に電圧を印加することで基板1,1'の界面とほぼ平行方向に電界(電界方向16)を形成すると、液晶21の分子は基板1,1'の界面と平行な面内で偏向されて回転し、偏光板13,13'の偏光軸と一致する状態になる。 When an electric field (electric field direction 16) in a direction substantially parallel with the interface between the substrate 1 and 1 'by applying a voltage between the common electrode 2 and the pixel electrode 11 formed on the glass substrate 1, the molecules of the liquid crystal 21 is the substrate 1 , 'rotates is deflected in the interface plane parallel to the polarizing plate 13, 13' 1 becomes a state that matches the polarization axis of the. これにより、画素は表示の状態になる。 Thus, the pixel is in a state of the display. この画素を多数配列して表示パネルが構成される。 Display panel is constructed with this pixel number sequence to.

【0028】〔実施例1〕図2は本発明による液晶表示素子の第1実施例を構成する画素基板の構造の説明図であって、中央に平面図を、またそのA−A'線に沿った断面図を図の左側に、B−B'線に沿った断面図を図の右側に、C−C'線に沿った断面図を図の下側に示す。 [0028] [Embodiment 1] FIG. 2 is an explanatory view of the structure of the pixel substrate of the first embodiment of the liquid crystal display device according to the present invention, a plan view in the center, also on the line A-A ' the cross-section along view on the left side of the figure, 'a cross-sectional view along the line on the right side of FIG, C-C' B-B shows a cross-sectional view taken along a line in the lower part of FIG.

【0029】同図において、前記図1と同一符号は同一部分に対応し、3は共通配線、4は走査電極、5は走査配線、7は半導体層、8は薄膜トランジスタ部、9は信号電極、12は保護膜である。 [0029] In the figure, FIG. 1 and the same reference numerals correspond to the same parts, 3 common wiring, the fourth scanning electrode, 5 is a scanning line, 7 denotes a semiconductor layer, 8 thin film transistor portion, 9 a signal electrode, 12 is a protective film.

【0030】走査電極4、走査配線5、共通電極2および共通配線3は同層かつ同材料で形成されている。 The scan electrode 4, the scanning wiring 5, the common electrode 2 and the common wiring 3 are formed in the same layer and the same material. これらの各層と絶縁膜6を介して半導体層7を、また上記各電極と配線と同層かつ同材料で信号電極9、信号配線1 The semiconductor layer 7 through these layers and the insulating film 6, and the signal electrodes 9 in each of the above electrodes and the wiring in the same layer and the same material, the signal lines 1
0および画素電極11を形成されている。 It is formed to 0 and the pixel electrode 11.

【0031】また、画素電極11の一部が共通配線3と基板面に垂直な方向で絶縁膜6を介してオーバーラップするように配置し、電気的容量を持たせて画素電極11 Further, arranged such that a portion of the pixel electrode 11 overlap through an insulating film 6 in a direction perpendicular to the common wiring 3 and the substrate surface, the pixel electrode 11 to have an electrical capacity
と共通電極2の間に与えられた信号電圧を保持する信号保持能力を向上させている。 Thereby improving the signal holding capacity for holding a signal voltage applied between the common electrode 2 and the. このような構造とした液晶表示素子においては、従来の液晶表示素子では画素電極と対向するガラス基板に形成されている共通電極を、画素電極11と同じガラス基板1の面に形成する際に、列方向(図の上下方向)に連続する2画素で共通配線を共有する。 In such a structure the liquid crystal display device, a common electrode formed on the glass substrate facing the pixel electrode in the conventional liquid crystal display device, when forming the same surface of the glass substrate 1 and the pixel electrode 11, share a common line in two pixels continuous in the column direction (the vertical direction in the drawing).

【0032】図3は本発明による液晶表示素子を従来の液晶表示素子を比較した2画素分の構造を示す平面図であって、(a)は列方向に連続する2画素で共通配線を共有させた本発明による横電界方式の液晶表示素子、 [0032] Figure 3 is a plan view showing the structure of two pixels comparing conventional liquid crystal display device of the liquid crystal display device according to the present invention, (a) is sharing a common line in two pixels continuous in the column direction IPS mode LCD device according to the invention is,
(b)は共通配線を共有させない構造の横電界方式の液晶表示素子、(c)は従来の縦電界方式の液晶表示素子である。 (B) a liquid crystal display device of IPS mode structure which does not share a common line, (c) is a liquid crystal display device of a conventional vertical electric field method. なお、同図(c)における23は保持電極である。 Incidentally, 23 is a holding electrode in FIG. (C).

【0033】同図(c)は透明画素電極22および共通電極が画素のほぼ全面積の形成されるため、画素の開口部の光透過率が低下し明るさの向上には限界がある。 [0033] FIG. (C) Since the transparent pixel electrode 22 and the common electrode are formed of substantially the entire area of ​​the pixel, there is a limit to the improvement in the light transmittance is reduced brightness of the aperture of the pixel. これに対して同図(a)(b)に示した横電界方式では画素電極11と共通電極2が基板面に並置して形成されるものであるために明るい表示ができるという利点がある。 There is an advantage that the pixel electrode 11 in the horizontal electric field method shown in FIG. (A) (b) In contrast the common electrode 2 can bright display to those formed in juxtaposition to the substrate surface.

【0034】そして、同図(a)に示した本発明による液晶表示素子は、基板1の界面にほぼ平行な方向に電界を印加するものであるために、画素電極11と共通電極2とを同一の基板面内に配置する際、同図(b)に示した共通配線3を列方向に連続する2画素で共用しない画素に比べ光が透過できる画素の開口部の面積を減少させることなく共通配線3の線幅を拡大することができる。 [0034] Then, a liquid crystal display device according to the present invention shown in FIG. (A), in order is to apply an electric field in a direction substantially parallel to the interface of the substrate 1, the pixel electrode 11 and the common electrode 2 when arranged in the same substrate surface, without decreasing the area of ​​the aperture of the pixels of the common wiring 3 can transmit light compared to a pixel not shared by two pixels continuous in the column direction as shown in FIG. (b) it is possible to expand the line width of the common wiring 3.

【0035】その結果、共通配線3の抵抗が低くなり共通信号の伝播がスムーズになり、画質の向上と共通信号発生回路の低消費電力化が実現できる。 [0035] As a result, the smooth propagation of the common signal resistance is low and the common wiring 3, the power consumption of the common signal generation circuit and the improvement in image quality can be realized.

【0036】さらに、共通配線3を共用することにより、信号配線10と共通配線3の交差箇所が同図(b) Furthermore, by sharing the common wiring 3, the intersection between the signal line 10 common wiring 3 Fig (b)
の構造に比べて25%程度減少し、信号配線10と共通配線3の短絡欠陥が減少する。 Reduced by about 25% as compared to the structure of the short-circuit defects of the common wiring 3 and the signal lines 10 is reduced.

【0037】図4は本発明による横電界方式の液晶表示素子を配列して形成した液晶表示パネルの複数画素分の平面図である。 [0037] FIG. 4 is a plan view of a plurality of pixels of the liquid crystal display panel formed by arranging the liquid crystal display device of IPS mode according to the present invention.

【0038】同図において、矢印Pで示した列方向に連続する2画素で前記共通配線3を共用して形成されている。 [0038] In the figure, it is formed by sharing the common wiring 3 in 2 consecutive pixels in the column direction indicated by the arrow P.

【0039】図5は本発明による横電界方式の液晶表示素子を用いた液晶表示パネルの電気的等価回路であって、2は共通電極、3は共通配線、8は薄膜トランジスタ部、9は信号電極、10は信号配線、24は信号配線10から信号電極9までの配線、25は液晶容量、26 FIG. 5 is an electrical equivalent circuit of the liquid crystal display panel using a liquid crystal display device of IPS mode according to the present invention, 2 is common electrode, 3 is the common wiring, 8 thin film transistor portion, the signal electrode 9 , 10 signal line, 24 wiring from the signal line 10 to the signal electrodes 9, 25 is a liquid crystal capacitor, 26
は保持容量、27はコントロール回路、28は走査電極駆動回路、29は信号電極駆動回路、30は共通電極駆動回路である。 Storage capacitor, the control circuit 27, the scan electrode driving circuit 28, 29 is the signal electrode driving circuit, 30 is a common electrode driving circuit.

【0040】図示したように、液晶表示パネルは、コントロール回路27の制御のもとに走査電極駆動回路28 [0040] As illustrated, the liquid crystal display panel, the scan under the control of control circuit 27 electrode driving circuit 28
と信号電極駆動回路29により所定の画素が選択される。 Predetermined pixels are selected by the signal electrode driving circuit 29 and. このとき、列方向に連続する2画素分の共通電極2 At this time, the common electrode 2 of the two pixels continuous in the column direction
は共通電極駆動回路30から共通配線3を介して所要の共通電圧が印加される。 It required common voltage through the common wiring 3 from the common electrode driving circuit 30.

【0041】図6は本発明による横電界方式の液晶表示素子を構成する列方向に連続する2画素の電気的等価回路であって、前記図3(a)の2画素に相当する。 [0041] Figure 6 is an electrical equivalent circuit of two pixels continuous in the column direction of the liquid crystal display device of IPS mode according to the present invention, corresponding to two pixels of FIG 3 (a).

【0042】同図において、3は共通配線、5は走査配線、8は薄膜トランジスタ部、9は信号電極、10は信号配線、24は信号配線10から信号電極9までの配線、31は共通配線3と信号配線10間の線間容量、3 [0042] In the figure, 3 is the common line, 5 scan lines, 8 thin film transistor portion, the signal electrode 9, 10 signal line, 24 wiring from the signal line 10 to the signal electrodes 9, 31 are common wiring 3 line capacitance between the signal line 10 and, 3
2は走査配線5と信号配線10間の線間容量、33は走査電極5と画素電極11間の線間容量である。 Line capacitance between the two scanning lines 5 and the signal lines 10, 33 is a line capacitance between the scanning electrode 5 and the pixel electrode 11.

【0043】図示したように、前記図3(a)に示した構成としたことにより、信号配線10と共通配線3の間の寄生容量31が減少し、信号電極9および共通電極2 [0043] As shown, FIG. 3 with the construction shown in (a), the parasitic capacitance 31 between the signal wiring 10 common wiring 3 is reduced, the signal electrode 9 and the common electrode 2
への液晶駆動信号をアクティブフィルタ配線においてスムーズに伝播させることができる。 A liquid crystal drive signal to thereby smoothly propagated in the active filter wiring.

【0044】このように、本実施例によれば、画質の向上と信号発生回路の低消費電力化が実現できる。 [0044] Thus, according to this embodiment, the power consumption of the improved signal generation circuit of the image quality can be realized.

【0045】次に、本発明の第2実施例を説明する。 Next, a description will be given of a second embodiment of the present invention.

【0046】前記図2に示したように、列方向に連続する2画素で走査電極4、走査配線5および薄膜トランジスタ8を対応させ、信号電極9を共用して、この共用した信号電極9から信号配線10までの配線24を相対向した走査配線5の間に配置する。 [0046] As shown in FIG. 2, the scan electrodes 4 with 2 consecutive pixels in the column direction, to correspond to the scanning lines 5 and the thin film transistor 8, share the signal electrode 9, the signal from the signal electrode 9 and the common the wiring 24 to the wiring 10 is disposed between the opposing the scanning line 5.

【0047】本実施例の構成により、前記図3(c)に示した従来の縦電界方式の画素、あるいは同図(b)に示した各独立した画素に対するように信号電極を走査電極上に配置するよりも、信号電極9と走査配線5の交差面積が少なくなり、信号電極9と走査配線5の短絡欠陥を低減することができる。 [0047] With the configuration of this embodiment, FIG. 3 pixels of a conventional vertical electric field method shown (c), the or signal electrodes so that for each separate pixel shown on the scan electrodes in FIG. (B) than to place, it is possible to cross the area of ​​the signal electrode 9 and the scanning lines 5 is reduced, to reduce short-circuit defects of the scan lines and the signal electrode 9 5.

【0048】また、前記図6に示した前記図3(a)に対応する等価回路において、信号電極9と走査配線5との間の寄生容量(線間容量)32が減少し、走査電極4 [0048] Also, in the equivalent circuit corresponding to the shown in FIG. 3 (a) shown in FIG. 6, the parasitic capacitance (line capacitance) between the signal electrode 9 and the scanning lines 5 32 decreases, the scanning electrodes 4
への信号をスムーズに伝播することができ、画質の向上と信号発生回路の低消費電力化を実現できる。 The signal to be able to propagate smoothly, it is possible to realize low power consumption of the improved signal generation circuit of the image quality.

【0049】実施例1、2で説明した列方向に2画素で共通配線の共用、信号電極の共用を行う構造は従来の縦電界方式の液晶表示パネルにも適用できる。 The structure for sharing, the sharing of the signal electrodes of the common wiring 2 pixels in a column direction as described in Examples 1 and 2 can be applied to a liquid crystal display panel of a conventional vertical electric field method.

【0050】図7は本発明を従来の縦電界方式の液晶表示パネルに適用した本発明の第3実施例を説明する液晶表示パネルの2画素を示す平面図であって、22は透明画素電極、23は保持電極、24は信号電極9から信号配線10までの配線、前記実施例と同一符号は同一部分に対応する。 [0050] Figure 7 is a plan view illustrating two pixels of a liquid crystal display panel for explaining a third embodiment of the present invention that the present invention is applied to a liquid crystal display panel of a conventional vertical electric field type, 22 a transparent pixel electrode , 23 holding electrode, 24 is the wiring from the signal electrode 9 to the signal line 10, the embodiment and the same reference numerals correspond to the same parts.

【0051】同図(a)は従来の縦電界方式の液晶表示パネルの構造図、同図(b)は同図(a)に本発明を適用した構造図である。 [0051] FIG. (A) is a structural view of a liquid crystal display panel of a conventional vertical electric field method, and FIG. (B) is a structural diagram according to the present invention in the diagram (a).

【0052】同図(b)において、前記共通配線に対応した容量形成用の配線(容量配線34)を走査配線5と同層、同材料で新たに形成し、列方向に連続する2画素で共用する。 [0052] In FIG. (B), the common wiring in the same layer as the scanning lines 5 wiring (a capacitor wiring 34) of the capacitance formed corresponding, with two pixels newly formed in the same material, continuously in the column direction Sharing. 配線容量は、絶縁層を介して保持電極23 Wiring capacitance, the storage electrode 23 via an insulating layer
と電気的容量を形成して画素の信号保持率を向上させる。 To form an electrical capacitance to improve the signal holding ratio of a pixel with.

【0053】このとき、列方向の前段の画素の走査電極に接続されている走査配線5と次段の容量電極によって電気的容量を形成している同図(a)に示した従来の構造に対し、走査配線5の容量負荷が軽くなるため、走査信号発生回路の低消費電力化、あるいは走査線配線5の幅を狭くすることができる。 [0053] At this time, the conventional structure shown in FIG forming the electrical capacitance by the column direction of the preceding pixel the connected scan lines 5 and the next stage of the capacitor electrode to the scanning electrode (a) contrast, since the capacitive load of the scanning lines 5 becomes lighter, it is possible to narrow the power consumption of the scanning signal generating circuit, or the width of the scanning lines 5.

【0054】また、信号電極9の共用により、該信号電極9と走査配線5の短絡欠陥の減少、信号電極9と走査配線5との間の寄生容量の減少で、走査電極への信号がスムーズに伝播でき、画質の向上、信号発生回路の低消費電力化を実現できる。 [0054] Also, by sharing the signal electrode 9, a decrease in short-circuit defects of the signal electrode 9 and the scanning lines 5, a decrease in parasitic capacitance between the signal electrode 9 and the scanning lines 5, smoothly signal to scan electrodes propagate, the improvement of image quality, it is possible to realize low power consumption of the signal generating circuit.

【0055】本発明の第4実施例を以下に説明する。 [0055] A fourth embodiment of the present invention will be described below.

【0056】実施例2の画素構造において、信号電極の共用と、該共用した信号電極から信号配線までの配線2 [0056] In the pixel structure of Example 2, and the common signal electrode, from the signal electrodes for co until the signal wiring lines 2
4を相対向した走査配線の間に配置する。 4 is disposed between the phase opposed scanning lines.

【0057】これにより、信号電極と走査電極の交差面積を増加させることなく、薄膜トランジスタの位置を走査配線上で移動させることができる。 [0057] Thus, without increasing the cross area of ​​the signal electrode and the scanning electrode, it is possible to move the position of the thin film transistor on the scanning lines.

【0058】ところで、本発明による液晶表示素子の画素電極は、その幅が狭い線形状であるため、断線による画素欠陥不良が発生し易くなる。 By the way, the pixel electrode of the liquid crystal display device according to the present invention, since the width of a narrow line-shaped, pixel defect failure is likely to occur due to breakage.

【0059】図8は本発明による液晶表示素子の第5実施例を構成する画素基板の構造の説明図であって、前記図2と同様の平面図および断面図である。 [0059] Figure 8 is an explanatory view of the structure of a pixel substrate which constitutes the fifth embodiment of the liquid crystal display device according to the present invention, a plan view and a cross-sectional view similar to FIG. 2.

【0060】同図に示したように、前記した各実施例の特徴を生かして画素電極11の本数分だけ薄膜トランジスタ8を設け、信号電極9を共通化して信号電極から信号配線10までの配線を相対向した走査配線の間に形成することにより、画素電極11の一方が途中で断線した場合でも画素の表示は正常に近い状態で得られる。 [0060] As shown in the figure, the number amount corresponding TFT 8 pixel electrode 11 is provided taking advantage of the features of each embodiment described above, the wiring from the signal electrodes in common the signal electrodes 9 to the signal line 10 phase by forming between the opposed scanning lines, one display pixel even when disconnected in the middle of the pixel electrode 11 are obtained in nearly normal state.

【0061】また、何れかの薄膜トランジスタが不良であった場合、レーザー修正手段などで不良の薄膜トランジスタに接続されている画素電極11を切断することにより、他の正常な薄膜トランジスタで画素表示を行わせることができる。 [0061] When any of the thin film transistors is defective, by cutting the pixel electrode 11 connected to the defective thin-film transistor in such a laser correction means, to cause the pixel display in other normal thin-film transistors can.

【0062】このように、上記した各実施例によれば、 [0062] Thus, according to the embodiments described above,
生産性の高い高画質のアクティブ・マトリクス型液晶表示素子を得ることができる。 Active matrix type liquid crystal display device of high productivity high quality can be obtained.

【0063】 [0063]

【発明の効果】以上説明したように、本発明は共通電極を画素電極と同じ基板上に配置することにより、基板と平行な方向に電界を発生させ、当該電界により液晶分子を駆動する横電界方式の液晶表示素子、あるいは容量配線を有する従来の縦電界方式の液晶表示素子において、 As described in the foregoing, by the present invention is to arrange the common electrode on the same substrate as the pixel electrodes, an electric field is generated parallel to the substrate direction, the transverse electric field for driving the liquid crystal molecules by the electric field in the liquid crystal display device of a conventional vertical electric field type having a liquid crystal display element or a capacitor wiring, the method,
前記共通配線あるいは容量配線を隣接する2画素で共有し、また信号電極を隣接する2画素で共有することにより、表示に寄与する画素の開口面積を損なうことなく配線幅を広げることができ、配線の抵抗を低下させて画質の向上、駆動回路の低消費電力化を達成することができる。 The common wiring or the capacitor wiring shared by two pixels adjacent, also by sharing with two pixels adjacent signal electrodes, it is possible to widen the line width without sacrificing the opening area of ​​pixels contributing to the display, wiring lowering the resistance improve image quality, it is possible to achieve low power consumption of the drive circuit.

【0064】さらに、配線間の交差箇所あるいは交差面積を減少させることができ、線間短絡不良の減少と配線間の寄生容量の低減により画質の向上と駆動回路の低消費電力化が得られる。 [0064] Further, it is possible to reduce the intersections or crossing areas between the wirings, the power consumption of the improved and the driving circuit of the image quality can be obtained by reducing the parasitic capacitance between the wiring and the reduction of the line short circuit.

【0065】さらに、上記した信号電極の共用の効果を利用して、配線間の交差面積を増加させることなく1画素内の薄膜トランジスタの数を増やすことができ、例えば全紀伊の基板と平行な方向に電界を形成させる方式の液晶表示素子では、画素電極の両端にそれぞれ薄膜トランジスタを設けることにより、画素電極が途中で断線しても正常な表示を行わせることができる。 [0065] Further, by utilizing the effect of sharing the signal electrode as described above, cross area between the wiring can increase the number of thin film transistors in a pixel without increasing, for example, a direction parallel to the substrate of all Kii the liquid crystal display device of the type which forms an electric field, by providing a thin film transistor at each end of the pixel electrode, it is possible to perform a normal display even when disconnected halfway pixel electrode.

【0066】また、その内の1つの薄膜トランジスタが不良であってもその薄膜トランジスタを切離す修正作業により正常な表示を行わせることができる。 [0066] Further, it is possible to perform the normal display by disconnecting correction work the one thin film transistor is its thin-film transistor be a failure of them.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明を適用する液晶表示素子の動作を説明する1画素分の模式図である。 1 is a schematic view of one pixel for explaining the operation of the liquid crystal display device applying the present invention.

【図2】本発明による液晶表示素子の第1実施例を構成する画素基板の構造の説明図である。 It is an explanatory view of the structure of the pixel substrate of the first embodiment of the liquid crystal display device according to the invention, FIG.

【図3】本発明による液晶表示素子を従来の液晶表示素子を比較した2画素分の構造を示す平面図である。 3 is a plan view showing the structure of two pixels comparing conventional liquid crystal display device of the liquid crystal display device according to the present invention.

【図4】本発明による横電界方式の液晶表示素子を配列して形成した液晶表示パネルの複数画素分の平面図である。 Is a plan view of a plurality of pixels of the liquid crystal display panel was formed by arranging the liquid crystal display device of IPS mode according to the present invention; FIG.

【図5】本発明による横電界方式の液晶表示素子を用いた液晶表示パネルの電気的等価回路である。 It is an electrical equivalent circuit of the liquid crystal display panel using a liquid crystal display device of IPS mode according the present invention; FIG.

【図6】本発明による横電界方式の液晶表示素子を構成する列方向に連続する2画素の電気的等価回路である。 6 is an electrical equivalent circuit of two pixels continuous in the column direction of the liquid crystal display device of IPS mode according to the present invention.

【図7】本発明を従来の縦電界方式の液晶表示パネルに適用した本発明の第3実施例を説明する液晶表示パネルの2画素を示す平面図である。 7 is a plan view illustrating two pixels of a liquid crystal display panel for explaining a third embodiment of the present invention the present invention applied to a liquid crystal display panel of a conventional vertical electric field method.

【図8】本発明による液晶表示素子の第5実施例を構成する画素基板の構造の説明図である。 8 is an explanatory view of the structure of a pixel substrate which constitutes the fifth embodiment of the liquid crystal display device according to the present invention.

【符号の説明】 1,1' 透明ガラス基板 2 共通電極 3 共通配線 4 走査電極 5 走査配線 6 絶縁膜 7 半導体層 8 薄膜トランジスタ部 9 信号電極 10 信号配線 11 画素電極 12 保護膜 13,13' 偏光板 14 偏光板の偏光軸 15 液晶分子の配向方向 16 電界方向 17 ブラックマトリクス(BM) 18 カラーフィルタ 19 平坦化膜 20,20' 配向膜 21 液晶。 [Description of symbols] 1, 1 'transparent glass substrate 2 common electrode 3 common wiring 4 scan electrode 5 scan lines 6 insulating film 7 semiconductor layer 8 TFT unit 9 the signal electrode 10 signal line 11 pixel electrode 12 protective film 13, 13' polarization the plate 14 alignment direction 16 the direction of the electric field 17 a black matrix (BM) 18 color filter 19 flattening film 20, 20 of the polarization axis 15 the liquid crystal molecules of the polarizer 'alignment film 21 liquid crystal.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 太田 益幸 茨城県日立市大みか町七丁目1番1号 株 式会社日立製作所日立研究所内 ────────────────────────────────────────────────── ─── of the front page continued (72) inventor Ota Ekiko Hitachi City, Ibaraki Prefecture Omika-cho, seven chome No. 1 Co., Ltd. Hitachi, Ltd. Hitachi within the Institute

Claims (3)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】少なくとも一方が透明な一対の基板と、前記基板の間に挟持されて配向した誘電率異方性と屈折率異方性とを有する液晶組成物と、偏光手段と、マトリクス状に配置された複数の画素と、前記各画素ごとに備えられて画素電極と信号電極および走査電極に接続された薄膜トランジスタ素子と、共通電極と、前記画素電極と前記共通電極との間に電圧信号波形を印加する配線手段とを有し、かつ前記画素電極と共通電極を同一基板面内に配置してなり、前記画素電極と共通電極間に前記基板の面とほぼ平行に形成される電界により前記画素を駆動する液晶表示素子において、 前記走査電極に接続された走査配線と前記共通電極に接続された共通配線をマトリクス状に配置された複数の画素の行方向に平行に配置すると共に、前記信 Further comprising 1, wherein at least one of the pair of transparent substrates, and a liquid crystal composition having a sandwiched by the dielectric anisotropy oriented in refractive index anisotropy between the substrates, and polarizing means, matrix a plurality of pixels arranged in the voltage signal between the thin film transistor element connected to the pixel electrode and the signal electrode and the scanning electrode provided for each pixel, a common electrode, and the pixel electrode and the common electrode and a wiring means for applying a waveform, and will place the common electrode and the pixel electrode on the same substrate surface, the electric field that is substantially parallel to the surface of the substrate between the common electrode and the pixel electrode in the liquid crystal display device for driving the pixel, as well as parallel to the row direction of the plurality of pixels arranged the connected common line to the common electrode and connected to the scanning wiring to the scanning electrodes in a matrix, wherein trust 号電極に接続された信号配線を列方向に平行に配置したとき、前記列方向に連続する2画素で前記共通配線を共用してなることを特徴とする液晶表示素子。 No. When the connected signal lines to the electrodes arranged in parallel in a column direction, a liquid crystal display device characterized by comprising sharing the common wiring 2 pixels continuous in the column direction.
  2. 【請求項2】請求項1において、前記列方向に連続する2画素の走査電極と走査配線および前記薄膜トランジスタ素子を互いに対向させて配置し、前記2画素で前記信号電極を共用し、かつ前記信号電極から前記信号配線までの配線を相対向する走査配線の間に配置してなることを特徴とする液晶表示素子。 2. A method according to claim 1, wherein the column direction scanning and the scanning electrodes of two pixels successive lines and said thin film transistor element are opposed to each other are arranged to share the signal electrodes in the two pixels, and the signal the liquid crystal display element characterized by the electrodes formed by arranging between the scanning lines facing each of the wiring to the signal line.
  3. 【請求項3】請求項2において、1画素内で前記薄膜トランジスタを前記画素電極に対応した数だけ前記走査配線に沿って形成してなることを特徴とする液晶表示素子。 3. The method of claim 2, the liquid crystal display element characterized by being formed along only a number corresponding to the pixel electrode of the TFT in one pixel the scanning lines.
JP5887495A 1995-03-17 1995-03-17 Liquid crystal display element Pending JPH08254712A (en)

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Application Number Priority Date Filing Date Title
JP5887495A JPH08254712A (en) 1995-03-17 1995-03-17 Liquid crystal display element

Applications Claiming Priority (24)

Application Number Priority Date Filing Date Title
JP5887495A JPH08254712A (en) 1995-03-17 1995-03-17 Liquid crystal display element
TW085102194A TW354380B (en) 1995-03-17 1996-02-26 A liquid crystal device with a wide visual angle
US08/610,340 US5754266A (en) 1995-03-17 1996-03-04 Liquid crystal display device with wide viewing angle characteristics
EP02001044A EP1202108B1 (en) 1995-03-17 1996-03-15 Liquid crystal display device with wide viewing angle characteristics
DE1996633650 DE69633650D1 (en) 1995-03-17 1996-03-15 Liquid crystal display device with a large viewing angle
EP96104131A EP0732612B1 (en) 1995-03-17 1996-03-15 Liquid crystal display device with wide viewing angle characteristics
DE1996637979 DE69637979D1 (en) 1995-03-17 1996-03-15 Liquid crystal display with wide viewing angle
DE69633650T DE69633650T2 (en) 1995-03-17 1996-03-15 Liquid crystal display device with large viewing angle
CN 200310123858 CN1260606C (en) 1995-03-17 1996-03-16 Liquid crystal display with large visual angle character
CN 200310123860 CN1234039C (en) 1995-03-17 1996-03-16 Liquid crystal display with large visual angle character
CN 200310123859 CN1235082C (en) 1995-03-17 1996-03-16 Liquid crystal display with large visual angle character
CNB2003101238625A CN1306331C (en) 1995-03-17 1996-03-16 Liquid crystal display with large visual angle character
CNB961060840A CN1158565C (en) 1995-03-17 1996-03-16 Liquid crystal display device with wide viewing angle characteristics
CNB200310123863XA CN1325985C (en) 1995-03-17 1996-03-16 Liquid crystal display with large visual angle character
SG1996006460A SG78253A1 (en) 1995-03-17 1996-03-16 Liquid crystal display device with wide viewing angle characteristics
KR10-1996-0007118A KR100371850B1 (en) 1995-03-17 1996-03-16 Liquid crystal display device having wide viewing angle characteristics
KR1019980015873A KR100390283B1 (en) 1995-03-17 1998-05-02 Liquid crystal display device having wide viewing angle characteristics
US09/079,549 US5978059A (en) 1995-03-17 1998-05-15 Liquid crystal display device with wide viewing angle characteristics
US09/079,547 US5956111A (en) 1995-03-17 1998-05-15 Liquid crystal display device with parallel field having particular spacing and width
US09/079,360 US5929958A (en) 1995-03-17 1998-05-15 Liquid crystal display device with wide viewing angle characteristics
US09/079,359 US6064460A (en) 1995-03-17 1998-05-15 LCD with parallel field having counter electrode(s) at least equal to 1/2 width of video signal line
US09/443,305 US6201590B1 (en) 1995-03-17 1999-11-19 Liquid crystal display device with double-layered structure for gate line and/or data line
US09/734,208 US6417906B2 (en) 1995-03-17 2000-12-12 Liquid crystal display device with wide viewing angle characteristics
KR1020020027575A KR100413584B1 (en) 1995-03-17 2002-05-18 Liquid crystal display device

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JPH08254712A true JPH08254712A (en) 1996-10-01

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JP2001296557A (en) * 2000-02-10 2001-10-26 Samsung Electronics Co Ltd Thin film transistor substrate for liquid crystal display device, and manufacturing method therefor
US6404468B1 (en) 1998-07-16 2002-06-11 Mitsubishi Denki Kabushiki Kaisha Liquid crystal display unit
US6459464B1 (en) 2000-08-14 2002-10-01 Kabushiki Kaisha Advanced Display Liquid crystal display device with reduced weighting trace defects
US6972824B2 (en) 2002-04-15 2005-12-06 Advanced Display Inc. Liquid crystal display device including separating areas for line disconnection recovery arranged outside overlap portion of source line B common electrode
US6982776B2 (en) 2002-04-15 2006-01-03 Advanced Display Inc. In-plane-switching mode active matrix liquid crystal display device and method of manufacturing the same
US7333169B2 (en) 1996-11-22 2008-02-19 Semiconductor Energy Laboratory Co., Ltd. Electro-optical device and method of manufacturing the same
US7453535B2 (en) 2004-04-30 2008-11-18 Mitsubishi Denki Kabushiki Kaisha Liquid crystal display device having upper substrate light shield superposing gate and source wiring with cuts near gate and source terminal parts
JP2008299354A (en) * 2008-09-03 2008-12-11 Semiconductor Energy Lab Co Ltd Liquid crystal display device
US7816693B2 (en) 2005-09-27 2010-10-19 Mitsubishi Electric Corporation Thin film transistor in which an interlayer insulating film comprises two distinct layers of insulating material
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US7982838B2 (en) 2005-05-10 2011-07-19 Mitsubishi Denki Kabushiki Kaisha Liquid crystal display comprising first and second shielding electrode patterns and manufacturing method thereof
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JP2012190040A (en) * 2012-05-16 2012-10-04 Semiconductor Energy Lab Co Ltd Liquid crystal display device and electronic appliance
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US8797252B2 (en) 2004-03-25 2014-08-05 Mitsubishi Electric Corporation Liquid crystal display apparatus and method for generating a driver signal based on resistance ratios
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US7868984B2 (en) 1996-11-22 2011-01-11 Semiconductor Energy Laboratory Co., Ltd. Electro-optical device and method of manufacturing the same
US7333169B2 (en) 1996-11-22 2008-02-19 Semiconductor Energy Laboratory Co., Ltd. Electro-optical device and method of manufacturing the same
US6404468B1 (en) 1998-07-16 2002-06-11 Mitsubishi Denki Kabushiki Kaisha Liquid crystal display unit
JP2001296557A (en) * 2000-02-10 2001-10-26 Samsung Electronics Co Ltd Thin film transistor substrate for liquid crystal display device, and manufacturing method therefor
US6459464B1 (en) 2000-08-14 2002-10-01 Kabushiki Kaisha Advanced Display Liquid crystal display device with reduced weighting trace defects
US6972824B2 (en) 2002-04-15 2005-12-06 Advanced Display Inc. Liquid crystal display device including separating areas for line disconnection recovery arranged outside overlap portion of source line B common electrode
US6982776B2 (en) 2002-04-15 2006-01-03 Advanced Display Inc. In-plane-switching mode active matrix liquid crystal display device and method of manufacturing the same
US8797252B2 (en) 2004-03-25 2014-08-05 Mitsubishi Electric Corporation Liquid crystal display apparatus and method for generating a driver signal based on resistance ratios
US7453535B2 (en) 2004-04-30 2008-11-18 Mitsubishi Denki Kabushiki Kaisha Liquid crystal display device having upper substrate light shield superposing gate and source wiring with cuts near gate and source terminal parts
US7982838B2 (en) 2005-05-10 2011-07-19 Mitsubishi Denki Kabushiki Kaisha Liquid crystal display comprising first and second shielding electrode patterns and manufacturing method thereof
US7816693B2 (en) 2005-09-27 2010-10-19 Mitsubishi Electric Corporation Thin film transistor in which an interlayer insulating film comprises two distinct layers of insulating material
US8039852B2 (en) 2005-09-27 2011-10-18 Mitsubishi Electric Corporation Thin film transistor for a liquid crystal device in which a sealing pattern is electrically connected to a common electrode wiring
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