KR20080003127A - Method for display device and and method for fabricating the same - Google Patents

Method for display device and and method for fabricating the same Download PDF

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Publication number
KR20080003127A
KR20080003127A KR1020060061670A KR20060061670A KR20080003127A KR 20080003127 A KR20080003127 A KR 20080003127A KR 1020060061670 A KR1020060061670 A KR 1020060061670A KR 20060061670 A KR20060061670 A KR 20060061670A KR 20080003127 A KR20080003127 A KR 20080003127A
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South Korea
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liquid crystal
polarizer
crystal display
display device
present
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KR1020060061670A
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Korean (ko)
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KR101386565B1 (en
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문성오
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엘지.필립스 엘시디 주식회사
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Priority to KR1020060061670A priority Critical patent/KR101386565B1/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133631—Birefringent elements, e.g. for optical compensation with a spatial distribution of the retardation value
    • 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
    • G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
    • G02F1/133761—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle with different pretilt angles
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/64—Normally black display, i.e. the off state being black

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Polarising Elements (AREA)

Abstract

An LCD and a fabrication method thereof are provided to implement normal black by using a retardation layer for a polarizer using an in-plane switching mode cell and a wide band lambda/4. A first compensation film(103) of lambda/2 of a wide band, a liquid crystal cell, and a second compensation film(107) of lambda/2 of a wide band are interposed between a first polarizer(101) and a second polarizer. The liquid crystal cell is a liquid crystal cell of lambda/2 of a wide band.

Description

액정표시장치 및 그 제조방법{METHOD FOR DISPLAY DEVICE AND AND METHOD FOR FABRICATING THE SAME}Liquid crystal display and its manufacturing method {METHOD FOR DISPLAY DEVICE AND AND METHOD FOR FABRICATING THE SAME}

도 1은 종래기술에 따른 반사모드의 액정표시장치의 개략도.1 is a schematic diagram of a liquid crystal display device in reflective mode according to the prior art;

도 2는 본 발명에 따른 투과모드의 액정표시장치의 개략도2 is a schematic diagram of a liquid crystal display device in transmissive mode according to the present invention;

도 3은 본 발명에 따른 투과모드의 액정표시장치의 개략도로서, 다크상태와 밝은 상태를 구형으로 나타낸 개략도.3 is a schematic view of a liquid crystal display device in a transmissive mode according to the present invention, showing a dark state and a bright state in a spherical shape.

도 4는 본 발명에 따른 투과모드의 액정표시장치의 개략도로서, 다크상태의 보상필름과 밝은 상태의 보상필름을 적용한 경우에 파장에 따른 반사율을 도시한 그래프.Figure 4 is a schematic diagram of a liquid crystal display device of the transmission mode according to the present invention, a graph showing the reflectance according to the wavelength when the compensation film in the dark state and the compensation state in the bright state.

도 5는 본 발명에 따른 투과모드의 액정표시장치의 개략도로서, 블랙 상태와 화이트상태의 시뮬레이션 결과를 도시한 개략도.5 is a schematic diagram of a liquid crystal display device in transmissive mode according to the present invention, showing a simulation result of a black state and a white state.

도 6은 본 발명의 일실시예에 따른 액정표시장치의 개략도로서, TAC층이 개재되지 않은 경우의 실시예.6 is a schematic diagram of a liquid crystal display according to an embodiment of the present invention, in which a TAC layer is not interposed.

도 7은 본 발명의 일실시예에 따른 투과모드의 액정표시장치의 개략도로서, 블랙 상태와 화이트상태의 시뮬레이션 결과를 도시한 개략도.7 is a schematic diagram of a liquid crystal display device in a transmissive mode according to an embodiment of the present invention, showing a simulation result of a black state and a white state.

도 8은 본 발명의 다른 실시예에 따른 투과모드의 액정표시장치의 개략도로서, TAC층이 개재된 경우의 실시예.8 is a schematic diagram of a liquid crystal display device in transmissive mode according to another embodiment of the present invention, in which a TAC layer is interposed.

도 9는 본 발명의 다른 실시예에 따른 투과모드의 액정표시장치의 개략도로서, 블랙 상태와 화이트상태의 시뮬레이션 결과를 도시한 개략도.9 is a schematic diagram of a liquid crystal display device in transmissive mode according to another embodiment of the present invention, showing a simulation result of a black state and a white state;

도 10은 본 발명의 다른 실시예에 따른 투과모드의 액정표시장치의 개략도로서, TAC층이 개재된 경우에, 위상값에 따른 블랙의 변화를 개략적으로 나타낸 도면FIG. 10 is a schematic diagram of a liquid crystal display device in a transmissive mode according to another embodiment of the present invention. In the case where a TAC layer is interposed, a change in black according to a phase value is schematically illustrated.

도 11은 본 발명의 다른 실시예에 따른 투과모드의 액정표시장치의 개략도로서, TAC층이 개재된 경우에, 위상값에 따른 블랙의 변화를 개략적으로 나타낸 도면.FIG. 11 is a schematic diagram of a liquid crystal display device in a transmissive mode according to another embodiment of the present invention, and schematically illustrates a change in black according to a phase value when a TAC layer is interposed therebetween.

** 도면의 주요부분에 대한 부호의 설명 **** Explanation of symbols for main parts of drawings **

101 : 제1편광자 103 : 제1보상필름(λ/2 필름)101: first polarizer 103: first compensation film (λ / 2 film)

105 : 액정패널(λ/2 필름) 107 : 제2보상필름(λ/2 필름)105: liquid crystal panel (λ / 2 film) 107: second compensation film (λ / 2 film)

109 : 제2편광자 109: second polarizer

본 발명은 액정표시장치 및 그 제조방법에 관한 것으로, 보다 상세하게는 편광판 크기가 되지 않는 대형 패널 제작시에 편광판을 자르지 않고 바로 부착가능한액정표시장치 및 그 제조방법에 관한 것이다.The present invention relates to a liquid crystal display device and a method for manufacturing the same, and more particularly, to a liquid crystal display device and a method for manufacturing the same, which can be directly attached without cutting the polarizing plate at the time of manufacturing a large panel which does not have a polarizing plate size.

일반적으로 액정표시장치는 사용하는 광원에 따라 투과형 (transmission type)과 반사형(reflection type)으로 나눌 수 있으며, 상기 투과형 액정표시장치는 액정패널의 뒷면에 부착된 배면광원인 백라이트로부터 나오는 인위적인 빛을 액 정에 입사시켜 액정의 배열에 따라 빛의 양을 조절하여 색을 표시하는 형태이다.In general, a liquid crystal display device may be classified into a transmission type and a reflection type according to a light source used, and the transmission type liquid crystal display device may emit artificial light emitted from a backlight, which is a back light source attached to the rear side of the liquid crystal panel. The color is displayed by adjusting the amount of light according to the arrangement of the liquid crystal by entering the liquid crystal.

따라서, 상기 투과형 액정표시장치는 인위적인 배면광원을 사용하므로 전력소비가 큰 단점이 있는 반면, 반사형 액정표시장치는 빛의 대부분을 외부의 자연광이나 인조광원에 의존하는 구조를 하고 있으므로 상기 투과형 액정표시장치에 비해 소비전력이 적다.Therefore, the transmissive liquid crystal display device has a disadvantage in that power consumption is large because it uses an artificial back light source, whereas the reflective liquid crystal display device has a structure in which most of the light depends on external natural light or artificial light source. Less power consumption than devices

그러나, 상기 반사형 액정표시장치는 어두운 장소나, 날씨가 흐릴 경우에는 외부광을 이용할 수 없다는 제약이 있다.However, the reflective liquid crystal display device has a limitation that external light cannot be used in a dark place or when the weather is cloudy.

이러한 관점에서, 종래기술에 따른 액정표시장치 및 그 제조방법에 대해 도 1을 참조하여 설명하면 다음과 같다.In this regard, the liquid crystal display according to the related art and a manufacturing method thereof will be described with reference to FIG. 1.

도 1은 종래기술에 따른 반사모드의 액정표시장치의 개략도이다.1 is a schematic diagram of a liquid crystal display device in a reflective mode according to the prior art.

도 1을 참조하면, 종래기술에 따른 반사모드의 액정표시장치는, 반사판(11)와 편광자(17) 및 이들 반사판(11)과 편광자(17)사이에 개재되고 광대역(wide-band)밴드값이 λ/4인 제1보상필름(13)과 광대역(wide-band)값이 λ/2인 제2보상필름(15)으로 반사모드를 구현한다.Referring to FIG. 1, the liquid crystal display of the reflection mode according to the related art is interposed between the reflecting plate 11 and the polarizer 17, and the reflecting plate 11 and the polarizer 17 and has a wide-band band value. The reflection mode is implemented by the first compensation film 13 having a λ / 4 and the second compensation film 15 having a wide-band value of λ / 2.

상기 구성으로 된 종래기술에 따른 반사모드의 액정표시장치에 있어서, 반사판(11)을 통해 수직으로 반사된 빛은 제1보상필름(13)을 거치면서 "θ2"값만큼 편향되고, 이어 제2보상필름(15)을 통과하면서 "θ1"값만큼 다시 편향된후 다시 편광자(17)을 통해서는 다시 수직으로 진행하게 된다.In the liquid crystal display device of the reflection mode according to the prior art having the above configuration, the light vertically reflected through the reflecting plate 11 is deflected by a value of "θ2" while passing through the first compensation film 13, and then the second After passing through the compensation film 15 and again deflected by " [theta] 1 " value, the polarizer 17 proceeds vertically again.

그러나, 상기 종래기술에 따른 반사형 액정표시소자에 의하면, 소비전력이 적고, 경량, 박형으로 제조가능하다는 장점이 있으나, 휘도가 낮고, 명암대비비 및 시야각이 좁다는 단점이 있으며, 실내나 어두운 곳에서 사용하지 못하는 단점이 있다.However, the reflective liquid crystal display device according to the prior art has the advantage of low power consumption, light weight, and can be manufactured thinly, but has a disadvantage of low luminance, low contrast ratio and narrow viewing angle, and is used indoor or dark. There is a disadvantage that can not be used in place.

이에 본 발명은 상기한 바와 같은 종래기술의 제반 문제점을 해결하기 위한 것으로서, 본 발명은 횡전계모드셀과 광대역 λ/4를 이용하여 편광자에 리타데이션층을 이용하여 노말 블랙(normally black)를 구현할 수 있는 액정표시장치 및 그 제조방법에 제공함에 그 목적이 있다.Accordingly, the present invention is to solve all the problems of the prior art as described above, the present invention is to implement a normally black (black) by using a retardation layer on the polarizer using a transverse electric field mode cell and a broadband λ / 4. An object thereof is to provide a liquid crystal display device and a method for manufacturing the same.

상기 목적을 달성하기 위한 본 발명에 따른 액정표시장치는, 제1편광자와 제2편광자; 및 상기 제1편광자와 제2편광자사이에 개재된 광대역 λ/2의 제1보상필름, 액정셀, 광대역 λ/2의 제2보상필름;을 포함하여 구성되는 것을 특징으로한다.According to an embodiment of the present invention, a liquid crystal display device includes: a first polarizer and a second polarizer; And a first compensation film having a wideband? / 2, a liquid crystal cell, and a second compensation film having a wideband? / 2 interposed between the first polarizer and the second polarizer.

또한, 본 발명에 따른 액정표시장치 제조방법은, 제1편광자와 제2편광자를 제공하는 단계; 및 상기 제1편광자와 제2편광자사이에 광대역 λ/2의 제1보상필름, 액정셀, 광대역 λ/2의 제2보상필름을 개재하는 단계를 포함하여 구성되는 것을 특징으로한다.In addition, the liquid crystal display device manufacturing method according to the present invention comprises the steps of providing a first polarizer and a second polarizer; And interposing a first compensation film having a broadband? / 2, a liquid crystal cell, and a second compensation film having a broadband? / 2 between the first polarizer and the second polarizer.

그리고, 본 발명에 따른 액정표시장치는 제1편광자와 제2편광자; 및 상기 제1편광자와 제2편광자사이에 개재된 제1보상판과 액정셀 및 제2보상판을 포함하여 구성되는 것을 특징으로한다.The liquid crystal display according to the present invention includes a first polarizer and a second polarizer; And a first compensation plate, a liquid crystal cell, and a second compensation plate interposed between the first polarizer and the second polarizer.

더우기, 본 발명에 따른 액정표시장치는 제1편광자와 제2편광자; 및 상기 제1편광자와 제2편광자사이에 개재된 제1TAC층, 제1보상판, 액정셀, 제2TAC층, 제2보상판을 포함하여 구성되는 것을 특징으로한다.Moreover, the liquid crystal display according to the present invention comprises: a first polarizer and a second polarizer; And a first TAC layer, a first compensation plate, a liquid crystal cell, a second TAC layer, and a second compensation plate interposed between the first polarizer and the second polarizer.

또한, 본 발명에 따른 액정표시장치 제조방법은 제1편광자와 제2편광자를 제공하는 단계; 및 상기 제1편광자와 제2편광자사이에 제1TAC층, 제1보상판, 액정셀, 제2TAC층, 제2보상판을 개재하는 단계;를 포함하여 구성되는 것을 특징으로한다.In addition, the liquid crystal display device manufacturing method according to the present invention comprises the steps of providing a first polarizer and a second polarizer; And interposing a first TAC layer, a first compensation plate, a liquid crystal cell, a second TAC layer, and a second compensation plate between the first polarizer and the second polarizer.

이하, 본 발명에 따른 액정표시장치 및 그 제조방법에 대해 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, a liquid crystal display and a manufacturing method thereof according to the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명에 따른 투과모드의 액정표시장치의 개략도이다.2 is a schematic diagram of a liquid crystal display device in transmissive mode according to the present invention.

도 3은 본 발명에 따른 투과모드의 액정표시장치의 개략도로서, 다크상태와 밝은 상태를 구형으로 나타낸 개략도이다.3 is a schematic view of a liquid crystal display device in a transmissive mode according to the present invention, which schematically shows a dark state and a bright state in a spherical shape.

도 4는 본 발명에 따른 투과모드의 액정표시장치의 개략도로서, 다크상태의 보상필름과 밝은 상태의 보상필름을 적용한 경우에 파장에 따른 반사율을 도시한 그래프이다.FIG. 4 is a schematic diagram of a liquid crystal display device in a transmissive mode according to the present invention. FIG. 4 is a graph showing reflectance according to wavelengths when a dark compensation film and a bright compensation film are applied.

도 5는 본 발명에 따른 투과모드의 액정표시장치의 개략도로서, 블랙 상태와 화이트상태의 시뮬레이션 결과를 도시한 개략도이다.5 is a schematic diagram of a liquid crystal display device in a transmissive mode according to the present invention, which shows a simulation result of a black state and a white state.

도 6은 본 발명의 일실시예에 따른 액정표시장치의 개략도로서, TAC층이 개재되지 않은 경우의 실시예이다.6 is a schematic diagram of a liquid crystal display according to an exemplary embodiment of the present invention, in which a TAC layer is not interposed.

도 7은 본 발명의 일실시예에 따른 투과모드의 액정표시장치의 개략도로서, 블랙 상태와 화이트상태의 시뮬레이션 결과를 도시한 개략도이다.FIG. 7 is a schematic diagram of a liquid crystal display device in a transmissive mode according to one embodiment of the present invention, and illustrates a simulation result of a black state and a white state.

도 8은 본 발명의 다른 실시예에 따른 투과모드의 액정표시장치의 개략도로서, TAC층이 개재된 경우의 실시예이다.8 is a schematic diagram of a liquid crystal display device in transmissive mode according to another embodiment of the present invention, in which a TAC layer is interposed.

도 9는 본 발명의 다른 실시예에 따른 투과모드의 액정표시장치의 개략도로서, 블랙 상태와 화이트상태의 시뮬레이션 결과를 도시한 개략도이다.FIG. 9 is a schematic diagram of a liquid crystal display device in a transmissive mode according to another embodiment of the present invention, showing a simulation result of a black state and a white state.

도 10은 본 발명의 다른 실시예에 따른 투과모드의 액정표시장치의 개략도로서, TAC층이 개재된 경우에, 위상값에 따른 블랙의 변화를 개략적으로 나타낸 도면이다.FIG. 10 is a schematic diagram of a liquid crystal display device in a transmissive mode according to another embodiment of the present invention. In the case where a TAC layer is interposed therebetween, a change in black depending on a phase value is schematically illustrated.

도 11은 본 발명의 다른 실시예에 따른 투과모드의 액정표시장치의 개략도로서, TAC층이 개재된 경우에, 위상값에 따른 블랙의 변화를 개략적으로 나타낸 도면이다.FIG. 11 is a schematic diagram of a liquid crystal display device in a transmissive mode according to another embodiment of the present invention. In the case where a TAC layer is interposed, a change in black depending on a phase value is schematically illustrated.

본 발명의 일실시예에 따른 액정표시장치는, 도 2를 참조하면, 제1편광자(101)과 제2편광자(107)와, 이들 제1, 2 편광자(101)(107)사이에 개재된 광대역 λ/2 필름인 제1, 2 보상필름(103)(107) 및, 이들 제1, 2 보상필름(103)(107)사이에 개재된 광대역 λ/2 셀(105)을 포함하여 구성된다. In the liquid crystal display according to the exemplary embodiment of the present invention, referring to FIG. 2, a first polarizer 101 and a second polarizer 107 are interposed between the first and second polarizers 101 and 107. The first and second compensation films 103 and 107 which are broadband λ / 2 films and the broadband λ / 2 cells 105 interposed between the first and second compensation films 103 and 107 are configured. .

상기 구성으로 이루어진 본 발명의 액정표시장치는, 광의 이동경로를 펼쳐서 투과형으로 설계한 구조이다.The liquid crystal display device according to the present invention having the above-described structure is a structure designed to be transmissive by spreading a movement path of light.

도 3을 참조하면, 본 발명의 액정표시장치를 투과형으로 적용한 결과를 나타낸 것으로, 어두운 상태의 경우 λ/2 리타데이션 필름(103)(retardation film)은 15°이고, λ/2 셀(105)은 75° 또는 - 15°이다. Referring to FIG. 3, a result of applying the liquid crystal display of the present invention in a transmissive type is shown. In a dark state, the lambda / 2 retardation film 103 is 15 ° and the lambda / 2 cell 105 is shown. Is 75 ° or −15 °.

또한, 밝은 상태의 경우, λ/2 리타데이션 필름(103)(retardation film)은 15°이고, λ/2 셀(105)은 30° 또는 - 60°이다. Further, in the bright state, the lambda / 2 retardation film 103 is 15 ° and the lambda / 2 cell 105 is 30 ° or −60 °.

그리고, 도 4 및 도 5를 참조하면, 밝은 상태의 경우 (즉, λ/2 셀(105)이 30°인 경우) 와 어두운 상태의 경우 (즉, λ/2 셀(105)이 75°인 경우)의 반사율을 비교한 것인데, 어두운 상태의 경우가 밝은 상태의 경우에 비해 파장에 따른 반사율이 높게 나타남을 알 수 있다.4 and 5, the bright state (that is, the lambda / 2 cell 105 is 30 °) and the dark state (that is, the lambda / 2 cell 105 is 75 °). In the case of a dark state, the reflectance according to the wavelength is higher than that of the bright state.

한편, 본 발명의 다른 실시예에 따른 액정표시장치는, 도 6을 참조하면, 제1편광자(201)상에 제1보상판(203), 제1기판(205)과 IPS셀(207) 및 제2기판(209), 제2보상판(211), 제2편광자(213)를 포함하여 구성된다.Meanwhile, in the liquid crystal display according to another exemplary embodiment of the present invention, referring to FIG. 6, a first compensation plate 203, a first substrate 205, an IPS cell 207, and a first compensation plate 201 are formed on a first polarizer 201. The second substrate 209, the second compensation plate 211, and the second polarizer 213 are included.

상기 구성에서와 같이, 백라이트 파장별 강도가 다르며, 액정과 리타데이션필름의 파장별 굴절율이 상이하고, 액정셀의 프리틸트각이 존재한다.As in the above configuration, the intensity for each backlight wavelength is different, the refractive index for each wavelength of the liquid crystal and the retardation film is different, there is a pretilt angle of the liquid crystal cell.

도 7에 도시된 바와같이, -15°, -60° 구동시 중앙 블랙상태와 화이트상태는 75°, 30° 구동보다 좋지만 측면 빛샘영역이 더 큼을 알 수 있다.As shown in FIG. 7, the center black state and the white state are better than the 75 ° and 30 ° driving states at the time of -15 ° and -60 ° driving, but the side light leakage region is larger.

한편, 도 8은 본 발명의 또다른 실시예에 따른 액정표시장치는, 도8을 참조하면, 제1편광자(301)상에 제1TAC층(303), 제1보상판(305), 제1기판(307)과 IPS셀(309) 및 제2기판(311), 제2보상판(313), 제2TAC층(315), 제2편광자(317)를 포함하여 구성된다.Meanwhile, FIG. 8 is a liquid crystal display according to another exemplary embodiment of the present invention. Referring to FIG. 8, the first TAC layer 303, the first compensation plate 305, and the first compensation plate 301 are formed on the first polarizer 301. The substrate 307 includes an IPS cell 309, a second substrate 311, a second compensation plate 313, a second TAC layer 315, and a second polarizer 317.

도 9는 본 발명의 다른 실시예에 액정표시장치에 TAC층을 사용한 경우의 블랙상태와 화이트상태의 시뮬레이션 결과를 도시한 것이다.FIG. 9 shows simulation results of a black state and a white state when a TAC layer is used in a liquid crystal display according to another embodiment of the present invention.

도 10은 TAC층을 개재한 경우에, 상하 리타데이션 필름의 위상값에 따른 블랙 변화를 도시한 것으로, 상,하 리타데이션값이 커질수록 파란색 쉬프트(blue shift)가 강하게 발생한다. 따라서, 전체 블랙 휘도는 낮게 나오는 것으로 나타난다.FIG. 10 illustrates a black change according to a phase value of the upper and lower retardation films when the TAC layer is interposed. As the upper and lower retardation values increase, blue shift occurs strongly. Thus, the overall black luminance appears to be low.

도 11은 TAC층을 개재한 경우에 셀갭에 따른 블랙의 변화를 나타낸 것으로, 셀갭이 증가할수록 블랙에서 빛샘이 심하게 발생하고, 낮은 셀 갭이 필요한 것으로 나타난다.FIG. 11 illustrates a change in black according to a cell gap when the TAC layer is interposed. As the cell gap increases, light leakage occurs more severely in black, and a lower cell gap is required.

상기에서 설명한 바와같이, 본 발명에 따른 액정표시장치 및 그 제조방법에 의하면 다음과 같은 효과가 있다.As described above, the liquid crystal display according to the present invention and the manufacturing method thereof have the following effects.

본 발명에 따른 액정표시장치 및 그 제조방법에 의하면, 광대역 λ/4의 원리를 이용하여 화이트와 블랙을 구현할 수 있다.According to the liquid crystal display according to the present invention and a method of manufacturing the same, white and black can be implemented by using the principle of broadband? / 4.

또한, 리타데이션필름을 적용하는 것보다 TAC층을 적용하는 경우에 측면 빛샘이 개선된다는 것을 알 수 있다.In addition, it can be seen that the side light leakage is improved when the TAC layer is applied than the retardation film is applied.

따라서, 횡전계 셀과 광대역(wide band) λ/2를 이용하여 편광자에 리타데이션층을 이용하므로써 노말리 블랙(normally black)을 구현할 수 있다.Therefore, normal black may be realized by using a retardation layer for a polarizer using a transverse electric field cell and a wide band [lambda] / 2.

이상의 설명에서 본 발명은 특정의 실시예와 관련하여 도시 및 설명을 하였지만, 상기한 명세서는 본 발명의 권리를 한정하지 않으며, 본 발명에 따른 권리범위는 후술될 특허청구범위에 의해 결정되어져야 할 것이다.In the above description, the present invention has been illustrated and described in connection with specific embodiments, but the above specification does not limit the rights of the present invention, and the scope of the claims according to the present invention should be determined by the claims to be described later. will be.

Claims (7)

제1편광자와 제2편광자; 및A first polarizer and a second polarizer; And 상기 제1편광자와 제2편광자사이에 개재된 광대역 λ/2의 제1보상필름, 액정셀, 광대역 λ/2의 제2보상필름;을 포함하여 구성되는 것을 특징으로하는 액정표시장치.And a first compensation film having a wideband? / 2, a liquid crystal cell, and a second compensation film having a wideband? / 2 interposed between the first polarizer and the second polarizer. 제 1 항에 있어서, 상기 액정셀은 광대역 λ/2 액정셀인 것을 특징으로하는 액정표시장치.The liquid crystal display device according to claim 1, wherein the liquid crystal cell is a wideband? / 2 liquid crystal cell. 제1편광자와 제2편광자를 제공하는 단계; 및Providing a first polarizer and a second polarizer; And 상기 제1편광자와 제2편광자사이에 광대역 λ/2의 제1보상필름, 액정셀, 광대역 λ/2의 제2보상필름을 개재하는 단계를 포함하여 구성되는 것을 특징으로하는 액정표시장치 제조방법.And interposing a first compensation film having a broadband? / 2, a liquid crystal cell, and a second compensation film having a broadband? / 2 between the first polarizer and the second polarizer. . 제 1 항에 있어서, 상기 액정셀은 광대역 λ/2 액정셀인 것을 특징으로하는 액정표시장치 제조방법.The method of claim 1, wherein the liquid crystal cell is a wideband? / 2 liquid crystal cell. 제1편광자와 제2편광자; 및A first polarizer and a second polarizer; And 상기 제1편광자와 제2편광자사이에 개재된 제1보상판과 액정셀 및 제2보상판 을 포함하여 구성되는 것을 특징으로하는 액정표시장치.And a first compensation plate, a liquid crystal cell, and a second compensation plate interposed between the first polarizer and the second polarizer. 제1편광자와 제2편광자; 및A first polarizer and a second polarizer; And 상기 제1편광자와 제2편광자사이에 개재된 제1TAC층, 제1보상판, 액정셀, 제2TAC층, 제2보상판을 포함하여 구성되는 것을 특징으로하는 액정표시장치. And a first TAC layer, a first compensation plate, a liquid crystal cell, a second TAC layer, and a second compensation plate interposed between the first polarizer and the second polarizer. 제1편광자와 제2편광자를 제공하는 단계; 및Providing a first polarizer and a second polarizer; And 상기 제1편광자와 제2편광자사이에 제1TAC층, 제1보상판, 액정셀, 제2TAC층, 제2보상판을 개재하는 단계;를 포함하여 구성되는 것을 특징으로하는 액정표시장치 제조방법.Interposing a first TAC layer, a first compensation plate, a liquid crystal cell, a second TAC layer, and a second compensation plate between the first and second polarizers.
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KR101101239B1 (en) * 2009-09-02 2012-01-04 김정안 Probe card for testing semiconductor device
KR20150130549A (en) * 2013-03-29 2015-11-23 센젠 차이나 스타 옵토일렉트로닉스 테크놀로지 컴퍼니 리미티드 Liquid crystal display panel and liquid crystal display

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TWI242083B (en) * 2003-08-11 2005-10-21 Sony Corp Liquid crystal display device
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KR101101239B1 (en) * 2009-09-02 2012-01-04 김정안 Probe card for testing semiconductor device
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