KR20110066810A - In plane switching mode liquid crystal display device - Google Patents

In plane switching mode liquid crystal display device Download PDF

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KR20110066810A
KR20110066810A KR1020090123603A KR20090123603A KR20110066810A KR 20110066810 A KR20110066810 A KR 20110066810A KR 1020090123603 A KR1020090123603 A KR 1020090123603A KR 20090123603 A KR20090123603 A KR 20090123603A KR 20110066810 A KR20110066810 A KR 20110066810A
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electrode
liquid crystal
pixel
display device
crystal display
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이선정
안수창
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엘지디스플레이 주식회사
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133707—Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134318—Electrodes characterised by their geometrical arrangement having a patterned common electrode
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Geometry (AREA)
  • Liquid Crystal (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)

Abstract

PURPOSE: An in-plane switching mode liquid crystal display device is provided to remove disclination which is generated on the edge area by inducing the edge area of the in-plane switching mode to a liquid crystal driving area. CONSTITUTION: An in-plane switching mode liquid crystal display device comprises a first and a second substrate, a plurality of gate line(101) which is arranged to a first direction on the first substrate, a plurality of data line which define a plurality of pixels, a plurality of first and a second electrode which generates a plane electric field in the pixel region, and a first protrusion(104e) which is formed on a second common electrode corresponding to the end part of the first electrode.

Description

횡전계형 액정표시장치{In Plane Switching Mode Liquid Crystal Display Device}Transverse field type liquid crystal display device

본 발명은 액정표시장치에 관한 것으로, 더욱 상세하게는 횡전계형 액정표시장치에 관한 것이다. The present invention relates to a liquid crystal display device, and more particularly, to a transverse electric field type liquid crystal display device.

액정표시장치는 투명절연기판인 컬러필터기판과 어레이기판 사이에 이방성 유전율을 갖는 액정층을 형성한 후, 액정층에 형성되는 전계의 세기를 조정하여 액정물질의 분자배열을 변경시키고, 이를 통하여 표시면인 컬러필터기판에 투과되는 빛의 양을 조절함으로써 원하는 화상을 표현하는 표시장치이다.The liquid crystal display device forms a liquid crystal layer having anisotropic dielectric constant between the color filter substrate, which is a transparent insulating substrate, and the array substrate, and then changes the molecular arrangement of the liquid crystal material by adjusting the intensity of the electric field formed in the liquid crystal layer. The display device expresses a desired image by adjusting the amount of light transmitted through a color filter substrate, which is a surface.

최근에는, 액정표시장치의 화소전극과 공통전극을 어레이 기판 상에 함께 형성하고, 두 전극간의 수평 전계를 이용해 액정을 구동함으로써, 시야각을 넓힌 횡전계 방식의 수요가 늘고 있다.In recent years, a pixel electrode and a common electrode of a liquid crystal display are formed together on an array substrate, and a liquid crystal is driven using a horizontal electric field between the two electrodes, thereby increasing the demand for a transverse electric field system having a wider viewing angle.

일반적으로, 횡전계형 액정표시장치는 서로 대향 배치되고, 그 사이에 액정층을 구비한 컬러필터 기판과 어레이 기판을 구비한다.In general, the transverse electric field type liquid crystal display devices are disposed to face each other, and include a color filter substrate and an array substrate provided with a liquid crystal layer therebetween.

컬러필터 기판에는 빛샘을 방지하기 위한 블랙 매트릭스와 색상을 구현하기 위한 적색, 녹색, 청색의 컬러필터가 형성된다.The color filter substrate is formed with a black matrix to prevent light leakage and a color filter of red, green, and blue to implement color.

그리고, 어레이 기판에는 화소영역을 정의하는 게이트 라인과 데이터라인, 두 라인의 교차 지점에 위치하는 박막 트랜지스터, 각 화소영역에 서로 엇갈리게 교차 배치되어 수평 전계를 발생시키는 공통전극 및 화소전극이 형성된다.The array substrate is formed with a gate line and a data line defining a pixel region, a thin film transistor positioned at an intersection point of two lines, a common electrode and a pixel electrode intersecting each other alternately in each pixel region to generate a horizontal electric field.

도 1은 종래 기술에 따른 어레이 기판의 일부 평면도이다.1 is a partial plan view of an array substrate according to the prior art.

어레이 기판은 매트릭스 형태로 배열된 복수의 화소 영역들을 포함하며, 각 화소영역에는 도 1과 같이 서로 엇갈리는 화소전극(10) 및 공통전극(20)이 배치된다.The array substrate includes a plurality of pixel regions arranged in a matrix form, and the pixel electrodes 10 and the common electrode 20 that are alternate with each other are arranged in each pixel region as shown in FIG. 1.

화소 전극(10)과 공통 전극(20)이 평행하게 엇갈리는 영역에서는 E1 방향으로의 수평 전계가 발생되고, 그에 따라 액정의 장축이 전계에 평행하게 배열된다. In the region where the pixel electrode 10 and the common electrode 20 cross in parallel, a horizontal electric field in the E1 direction is generated, whereby the long axis of the liquid crystal is arranged in parallel to the electric field.

반면, 화소 전극(10)의 끝단이 위치하는 빛샘 영역(R1)에서는 화소 전극(10)과 공통 전극(20) 간에 발생하는 E1 방향의 전계와 E2 방향의 전계가 더해져 액정이 구동되지 않아 전경선(disclination)이 생기고, 이러한 전경선으로 인해 휘도가 감소하게 되는 문제점이 있다. On the other hand, in the light leakage region R1 at which the end of the pixel electrode 10 is positioned, the electric field in the E1 direction and the electric field in the E2 direction between the pixel electrode 10 and the common electrode 20 are added to the liquid crystal to drive the foreground line ( disclination occurs, and the foreground line reduces the luminance.

상술한 문제점을 해결하기 위한 본 발명의 목적은 횡전계형 액정표시소자의 가장자리영역을 액정구동영역으로 유도함으로써, 가장자리 영역에서 발생하는 전경선을 제거할 수 있는 횡전계형 액정표시장치를 제공하는 것이다. SUMMARY OF THE INVENTION An object of the present invention for solving the above problems is to provide a transverse field type liquid crystal display device capable of removing foreground lines generated in the edge area by inducing the edge region of the transverse field type liquid crystal display device to the liquid crystal driving region.

상술한 목적을 달성하기 위한 본 발명에 따른 횡전계형 액정표시장치는 제1 및 제2 기판과, 상기 제1 기판 상에 제1 방향으로 배열되는 복수의 게이트 라인과, 상기 게이트라인과 제2 방향으로 배열되어 복수의 화소를 정의하는 복수의 데이터라인과, 상기 화소영역 내에서 수평전계를 발생시키는 복수 개의 제1 전극 및 복수 개의 제2 전극과, 상기 제1 전극의 끝단부에 상응하는 상기 제2 전극에 형성되는 제1 돌출부를 포함한다. In accordance with an aspect of the present invention, a transverse electric field type liquid crystal display device includes a first and a second substrate, a plurality of gate lines arranged in a first direction on the first substrate, and the gate line and the second direction. A plurality of data lines arranged to define a plurality of pixels, a plurality of first electrodes and a plurality of second electrodes generating a horizontal electric field in the pixel region, and the first corresponding to the end portions of the first electrodes. And a first protrusion formed on the two electrodes.

상기 제2 전극의 끝단부에 상응하는 상기 제1 전극에 형성되는 제2 돌출부를 더 포함한다. And a second protrusion formed on the first electrode corresponding to an end of the second electrode.

상기 제1 전극은 화소전극이고, 상기 제2 전극은 공통전극이다. The first electrode is a pixel electrode, and the second electrode is a common electrode.

상기 제1 전극은 공통전극이고, 상기 제2 전극은 화소전극이다. The first electrode is a common electrode, and the second electrode is a pixel electrode.

이상에서와 같은 본 발명에 따른 횡전계형 액정표시장치는 화소전극의 끝단 및 공통전극의 끝단부의 모양을 변경하여 화소영역의 가장자리영역에서 발생하는 전경선을 감소시켜 휘도를 향상시킬 수 있는 효과가 있다. The transverse field type liquid crystal display device according to the present invention as described above has the effect of improving the luminance by changing the shape of the end of the pixel electrode and the end of the common electrode to reduce the foreground lines generated in the edge region of the pixel region.

이하는 첨부된 도면을 참조하여 본 발명의 실시예에 따른 횡전계형 액정표시장치에 대해 상세히 설명하고자 한다. Hereinafter, a transverse electric field liquid crystal display device according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명에 따른 횡전계형 액정표시장치를 나타낸 평면도이고, 도 2b는 도 2a의 Ⅱ-Ⅱ'선상의 단면도이다. FIG. 2 is a plan view showing a transverse electric field type liquid crystal display device according to the present invention, and FIG. 2B is a cross-sectional view taken along the line II-II 'of FIG. 2A.

도 2a 및 도 2b에 도시된 바와 같이, 본 발명에 따른 횡전계방식 액정표시소자는 서로 대향 배치된 제1 기판(120) 및 제2 기판(110)과, 상기 제1 및 제2 기판(120, 110)사이에 액정층(113)이 형성된다. As shown in FIGS. 2A and 2B, the transverse electric field type liquid crystal display device according to the present invention includes a first substrate 120 and a second substrate 110 disposed opposite to each other, and the first and second substrates 120. , The liquid crystal layer 113 is formed between the layers 110.

제1 기판(120)에는 빛이 새는 것을 막아주는 블랙매트릭스(121)와 컬러필터(123)가 형성된다. The black matrix 121 and the color filter 123 are formed on the first substrate 120 to prevent light leakage.

그리고, 제2 기판(110) 상에 복수의 게이트 라인(101)이 제1 방향으로 배열되어 있으며, 상기 게이트 라인(101)과 수직으로 배열되어 복수의 화소를 정의하는 데이터 라인(102)이 형성되어 있다. A plurality of gate lines 101 are arranged on the second substrate 110 in the first direction, and a data line 102 is formed to be perpendicular to the gate line 101 to define a plurality of pixels. It is.

상기 게이트 라인(101)과 데이터 라인(102)의 교차영역에 스위칭소자(103)가 형성되어 있으며, 도면에는 자세히 도시되지 않았지만, 상기 스위칭소자(103)는 게이트전극과 상기 게이트전극 위에 형성된 반도체층 및 상기 반도체층 상에 소정간 격 이격하여 형성된 소스/드레인전극으로 구성된다.A switching element 103 is formed at an intersection of the gate line 101 and the data line 102, and although not shown in detail, the switching element 103 is a semiconductor layer formed on the gate electrode and the gate electrode. And a source / drain electrode formed on the semiconductor layer at predetermined intervals.

화소 영역 내에는 복수의 공통전극(104a,104b,104c) 및 화소전극(105a,105b)이 형성되어 있다. A plurality of common electrodes 104a, 104b and 104c and pixel electrodes 105a and 105b are formed in the pixel region.

상기 복수의 공통전극(104a,104b,104c)의 일측에는 상기 게이트라인(101)과 나란하게 배열된 공통라인(104d)이 형성되어 있으며, 상기 복수의 공통전극(104a,104b,104c)은 상기 공통라인(104d)을 통해 신호를 인가받게 된다.One side of the plurality of common electrodes 104a, 104b and 104c is formed with a common line 104d arranged in parallel with the gate line 101, and the plurality of common electrodes 104a, 104b and 104c are formed as described above. The signal is applied through the common line 104d.

상기 화소전극(105a,105b)의 일측은 상기 화소전극(105a,105b)을 연결시키고, 제2 스토리지 전극(106)과 같이 스토리지 커패시터를 형성하는 제1 스토리지 전극(107)과 연결되어 있고, 상기 화소전극(105a,105b)의 타측은 상기 드레인전극이 연장되어 전기적으로 연결되어 있다. One side of the pixel electrodes 105a and 105b is connected to the first storage electrode 107 which connects the pixel electrodes 105a and 105b and forms a storage capacitor like the second storage electrode 106. The other side of the pixel electrodes 105a and 105b is electrically connected with the drain electrode extending.

상기 제2 스토리지 전극(106)은 상기 복수의 공통전극(104a,104b,104c)의 아래에 형성되어, 상기 복수의 공통전극(104a,104b,104c)을 전기적으로 연결시키고, 상기 복수의 공통전극(104a,104b,104c)에 신호를 인가한다. 그리고 상기 제2 스토리지 전극(106)은 상기 제1 스토리지 전극(107)과 중첩되어 형성됨으로써 스토리지 커패시터를 형성한다. The second storage electrode 106 is formed under the plurality of common electrodes 104a, 104b, 104c to electrically connect the plurality of common electrodes 104a, 104b, 104c, and the plurality of common electrodes. Signals are applied to 104a, 104b and 104c. The second storage electrode 106 overlaps with the first storage electrode 107 to form a storage capacitor.

그리고, 상기 제2 스토리지 전극(106)은 상기 데이터 라인(102)의 영향을 차폐하기 위한 차폐라인(shielding line)(108a, 108b)과 연결되어 있다. 상기 차폐라인(108a, 108b)은 상기 공통전극(104a, 104c)와 중첩되어 상기 공통전극의 역할도 한다. The second storage electrode 106 is connected to shielding lines 108a and 108b for shielding the influence of the data line 102. The shielding lines 108a and 108b overlap with the common electrodes 104a and 104c to serve as the common electrodes.

그리고, 상기 차폐라인(108a, 108b)은 게이트 라인(101)과 함께 제1 기판(100) 상에 동일층으로 형성되고, 상기 차폐라인(108a, 108b), 게이트 라인(101)이 형성된 제1 기판(100) 상에는 게이트 절연막(109)이 형성되고, 상기 데이터라인(102) 상에는 게이트 절연막(109) 상에 형성되고, 데이터라인(102)이 형성된 제1 기판(100) 상에 보호막(109b)이 형성되며, 상기 보호막(109b)이 형성된 제1 기 판(100) 상에는 공통전극(104a,104b,104c)과 화소전극(105a, 105b)이 이격되어 형성된다. The shielding lines 108a and 108b are formed in the same layer on the first substrate 100 together with the gate lines 101, and the shielding lines 108a and 108b and the first gate lines 101 are formed. A gate insulating film 109 is formed on the substrate 100, a gate insulating film 109 is formed on the data line 102, and a passivation film 109b is formed on the first substrate 100 on which the data line 102 is formed. The common electrodes 104a, 104b and 104c and the pixel electrodes 105a and 105b are spaced apart from each other on the first substrate 100 on which the passivation layer 109b is formed.

그리고, 상기 화소전극(105a, 105b)의 끝단부에 상응하는 상기 공통전극(104a, 104b)에는 제1 돌출부(104e)가 구비되고, 상기 공통전극(104b, 104c)의 끝단부에 상응하는 상기 화소전극(105a, 105b)에는 제2 돌출부(105c)가 구비된다. The common electrodes 104a and 104b corresponding to the end portions of the pixel electrodes 105a and 105b are provided with first protrusions 104e, and the common electrodes 104a and 104b correspond to the end portions of the common electrodes 104b and 104c. The second protrusion 105c is provided on the pixel electrodes 105a and 105b.

상기 화소전극(105a, 105b)의 끝단부에 상응하도록 형성되는 제1 돌출부(104e)는 각 화소전극(105a, 105b)의 왼쪽에 위치한 공통전극들(104a, 104b)에 구비되지만, 각 화소전극(105a, 105b)의 오른쪽에 위치한 공통전극들에 형성될 수도 있고, 상기 공통전극(104b, 104c)의 끝단에 상응하도록 형성되는 제2 돌출부(105c)는 각 공통전극(104b, 104c)의 왼쪽에 위치한 화소전극(105a, 105b)들에 구비되지만, 각 공통전극(104b, 104c)의 오른쪽에 위치한 화소전극(105a, 105b)들에 형성될 수도 있다. The first protrusion 104e formed to correspond to the end portions of the pixel electrodes 105a and 105b is provided in the common electrodes 104a and 104b positioned on the left side of the pixel electrodes 105a and 105b, respectively. The second protrusion 105c may be formed on the common electrodes positioned on the right side of the 105a and 105b, and the second protrusion 105c formed to correspond to the ends of the common electrodes 104b and 104c may have a left side of each of the common electrodes 104b and 104c. The pixel electrodes 105a and 105b may be formed in the pixel electrodes 105a and 105b, but may be formed in the pixel electrodes 105a and 105b positioned to the right of the common electrodes 104b and 104c.

상기한 바와 같이 구성된 본 발명의 수평전계방식 액정표시소자는 화소전극 및 공통전극의 끝단부 각각에 상응하도록 공통전극 및 화소전극 각각에 돌출부를 형성함으로써, 빛샘영역(R2)에서 액정이 구동하게 되어 전경선이 발생되는 것을 방지할 수 있게 된다. In the horizontal field type liquid crystal display device of the present invention configured as described above, the liquid crystal is driven in the light leakage region R2 by forming protrusions on the common electrode and the pixel electrode to correspond to the pixel electrode and the end of the common electrode, respectively. Foreground lines can be prevented from occurring.

먼저, 화소전극과 공통전극에 전압이 인가되면, 상기 화소전극과 공통전극 사이에 전계가 발생하고 액정분자는 이들 사이에 발생된 전계의 방향에 따라 배열된다. 이때, 도 3a에 도시된 바와 같이, 빛샘영역(R2)에서 화소전극(105a)의 돌출부(105c)로 인해 화소전극(105a)과 공통전극(104b)의 거리가 좁아지게 되고, 다른 영역의 화소전극(105a)과 공통전극(104b) 사이에서 발생되는 전계보다 상대적으로 강한 전계가 형성됨으로써, 전계의 방향 각도가 서서히 바뀌게 되어 액정구동영역이 형성된다. 따라서, 빛샘영역에서의 전계방향이 액정구동영역을 형성하여 전경선이 발생하지 않게 된다. First, when a voltage is applied to the pixel electrode and the common electrode, an electric field is generated between the pixel electrode and the common electrode, and the liquid crystal molecules are arranged along the direction of the electric field generated therebetween. In this case, as shown in FIG. 3A, the distance between the pixel electrode 105a and the common electrode 104b becomes narrow due to the protrusion 105c of the pixel electrode 105a in the light leakage region R2, and the pixel of another region By forming an electric field relatively stronger than the electric field generated between the electrode 105a and the common electrode 104b, the direction angle of the electric field is gradually changed to form the liquid crystal driving region. Therefore, the electric field direction in the light leakage region forms the liquid crystal driving region so that the foreground line does not occur.

상기 본 발명은 공통전극 또는 화소전극을 ITO 또는 IZO와 같은 투명한 전도성 물질로 형성하여, 개구율을 더욱 향상시킬 수 있다. 특히, 상기 화소전극을 투명전극으로 형성할 수 있으며, 공통전극 및 화소전극을 모두 투명전극으로 형성할 수 있다. In the present invention, the common electrode or the pixel electrode may be formed of a transparent conductive material such as ITO or IZO, thereby further improving the aperture ratio. In particular, the pixel electrode may be formed as a transparent electrode, and both the common electrode and the pixel electrode may be formed as a transparent electrode.

상기 본 발명의 화소영역 내에 형성되는 공통전극 및 화소전극의 수를 제한하지 않는다. The number of the common electrode and the pixel electrode formed in the pixel area of the present invention is not limited.

도 1은 종래 기술에 따른 어레이 기판의 일부 평면도1 is a partial plan view of an array substrate according to the prior art

도 2a는 본 발명에 따른 횡전계형 액정표시장치를 나타낸 평면도Figure 2a is a plan view showing a transverse electric field type liquid crystal display device according to the present invention

도 2b는 도 2a의 Ⅱ-Ⅱ'선상의 단면도FIG. 2B is a cross-sectional view taken along the line II-II 'of FIG. 2A

도 3a는 도 2a의 A영역을 확대한 도면3A is an enlarged view of region A of FIG. 2A.

도 3b는 도 2a의 B영역을 확대한 도면3B is an enlarged view of region B of FIG. 2A.

Claims (4)

제1 및 제2 기판과, First and second substrates, 상기 제1 기판 상에 제1 방향으로 배열되는 복수의 게이트 라인과, A plurality of gate lines arranged in a first direction on the first substrate; 상기 게이트라인과 제2 방향으로 배열되어 복수의 화소를 정의하는 복수의 데이터라인과, A plurality of data lines arranged in a second direction with the gate line to define a plurality of pixels; 상기 화소영역 내에서 수평전계를 발생시키는 복수 개의 제1 전극 및 복수 개의 제2 전극과, A plurality of first electrodes and a plurality of second electrodes generating a horizontal electric field in the pixel region; 상기 제1 전극(화소)의 끝단부에 상응하는 상기 제2 전극(공통)에 형성되는 제1 돌출부를 포함하는 것을 특징으로 하는 횡전계형 액정표시장치.And a first protrusion formed on the second electrode (common) corresponding to an end of the first electrode (pixel). 제1 항에 있어서, The method according to claim 1, 상기 제2 전극(공통)의 끝단부에 상응하는 상기 제1 전극(화소)에 형성되는 제2 돌출부를 더 포함하는 것을 특징으로 하는 횡전계형 액정표시장치.And a second protrusion formed on the first electrode (pixel) corresponding to an end of the second electrode (common). 제1 항에 있어서, The method according to claim 1, 상기 제1 전극은 화소전극이고, 상기 제2 전극은 공통전극인 것을 특징으로 하는 횡전계형 액정표시장치.And wherein the first electrode is a pixel electrode, and the second electrode is a common electrode. 제1 항에 있어서, The method according to claim 1, 상기 제1 전극은 공통전극이고, 상기 제2 전극은 화소전극인 것을 특징으로 하는 횡전계형 액정표시장치.And wherein the first electrode is a common electrode, and the second electrode is a pixel electrode.
KR1020090123603A 2009-12-11 2009-12-11 In plane switching mode liquid crystal display device KR20110066810A (en)

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