KR20010060824A - Color filter in tft-lcd - Google Patents

Color filter in tft-lcd Download PDF

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Publication number
KR20010060824A
KR20010060824A KR1019990063267A KR19990063267A KR20010060824A KR 20010060824 A KR20010060824 A KR 20010060824A KR 1019990063267 A KR1019990063267 A KR 1019990063267A KR 19990063267 A KR19990063267 A KR 19990063267A KR 20010060824 A KR20010060824 A KR 20010060824A
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KR
South Korea
Prior art keywords
color filter
tft
green
lcd
liquid crystal
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KR1019990063267A
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Korean (ko)
Inventor
이상곤
문준일
최교운
Original Assignee
박종섭
주식회사 하이닉스반도체
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Priority to KR1019990063267A priority Critical patent/KR20010060824A/en
Publication of KR20010060824A publication Critical patent/KR20010060824A/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/203—Filters having holographic or diffractive elements
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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

Abstract

PURPOSE: A color filter for a thin film transistor liquid crystal display device is to prevent a manufacturing defect by forming the color filter using a holography technology and reduces a manufacturing time. CONSTITUTION: Three hologram films(11) are implemented with a red sub pixel(12a), a green sub pixel(12b) and a blue sub pixel(12c). The sub pixels are stacked on the three hologram films. A photo mask having a mask pattern disposed at on the bottom face of the hologram films. The mask pattern has the same size and the same position as the sub pixels. An object beam and a reference beam are simultaneously injected. Compared with a printing method, the color filter is manufactured with ease and various driving schemes can be applied. By adjusting an array of the object beam and the reference beam, it is possible to manufacture the color filter having a wide viewing angle and a narrow viewing angle.

Description

박막 트랜지스터 액정표시장치의 컬러필터{COLOR FILTER IN TFT-LCD}Color filter for thin film transistor liquid crystal display device {COLOR FILTER IN TFT-LCD}

본 발명은 박막 트랜지스터 액정표시장치에 관한 것으로, 특히, 컬러화를 실현하기 위한 컬러필터에 관한 것이다.The present invention relates to a thin film transistor liquid crystal display device, and more particularly, to a color filter for realizing colorization.

박막 트랜지스터 액정표시장치(Thin Film Transistor Liquid Crystal Display : 이하, TFT-LCD)는 경량, 박형 및 저소비 전력 등의 특성을 갖기 때문에,CRT(Cathode-Ray Tube)를 대신하여 각종 정보 기기의 단말기 또는 비디오 기기 등에 사용되고 있다. 특히, 상기 TFT-LCD는 응답 특성이 우수하고, 그리고, 고화소수에 적합하기 때문에, 상기 CRT에 필적할만한 고화질 및 대형의 표시장치를 실현할 수 있다.Thin Film Transistor Liquid Crystal Display (TFT-LCD) has characteristics such as light weight, thinness, and low power consumption, so that it is a terminal or video of various information devices instead of CRT (Cathode-Ray Tube). It is used for equipment. In particular, since the TFT-LCD has excellent response characteristics and is suitable for high pixel numbers, it is possible to realize a high quality and large display device comparable to the CRT.

이러한 TFT-LCD는 TFT 및 화소전극이 구비된 TFT 어레이 기판과, 컬러필터 및 상대전극이 구비된 컬러필터 기판, 및, 상기 기판들 사이에 개재되는 액정층을 포함하여 이루어진다.The TFT-LCD includes a TFT array substrate provided with a TFT and a pixel electrode, a color filter substrate provided with a color filter and a counter electrode, and a liquid crystal layer interposed between the substrates.

한편, 상기 컬러필터 기판에 구비되는 컬러필터는, 도 1에 도시된 바와 같이, 투명성 절연기판, 예를들어, 유리기판(1) 상에 인쇄기법으로 레드(Red), 그린(Green) 및 블루(Blue)의 색을 띄는 형광 물질을 인쇄 및 소성하여 형성하거나, 또는, 삼색의 형광 물질이 인쇄되어진 필름을 상기 유리기판(1)에 부착시키는 방법으로 형성하며, 하나의 픽셀(Pixel)에 대해서 세 개의 서브 픽셀(Sub Pixel : 2)을 갖는다. 여기서, 도면부호 10은 컬러필터를 나타낸다.On the other hand, the color filter provided in the color filter substrate, as shown in Figure 1, a transparent insulating substrate, for example, the red (Green), green (Green) and blue by a printing method on the glass substrate (1) It is formed by printing and firing a fluorescent material having a blue color, or by attaching a film on which the tricolor fluorescent material is printed to the glass substrate 1, for one pixel. It has three sub pixels (2). Here, reference numeral 10 denotes a color filter.

그러나, 종래의 컬러필터는 인쇄기법을 이용하여 형성하므로, 인쇄 공정 상의 결함이 발생될 수 있고, 또한, 인쇄 및 소성 공정이 반복적으로 수행되는 것에 기인하여 제작 시간이 많이 소요되는 문제점이 있다.However, since the conventional color filter is formed by using a printing technique, defects in the printing process may occur, and also, the manufacturing time is high due to repeated printing and firing processes.

게다가, TFT-LCD의 이용이 다양화되고 있는 추세에서, 상기 인쇄기법에 의해 제작된 컬러필터로는 다양한 제품에 적용할 수 없는 문제점이 있다.In addition, in the trend of diversifying the use of TFT-LCD, there is a problem that the color filter manufactured by the printing technique cannot be applied to various products.

따라서, 상기와 같은 문제점을 해결하기 위하여 안출된 본 발명은, 홀로그라픽 기술(Holographic Technology)을 이용함으로써, 인쇄기법과 비교해서 공정 상의 결함을 방지함과 동시에 제조 시간을 단축시킬 있고, 또한, 다양한 응용 제품에 적용 가능한 컬러필터를 제공하는데, 그 목적이 있다.Therefore, the present invention devised to solve the above problems, by using the holographic technology (Holographic Technology), it is possible to shorten the manufacturing time while preventing the defects in the process compared to the printing method, and also various It is an object of the present invention to provide a color filter applicable to an application.

도 1은 종래 기술에 따른 컬러필터를 도시한 도면.1 is a view showing a color filter according to the prior art.

도 2 및 도 3은 본 발명의 실시예에 따른 컬러필터를 도시한 도면.2 and 3 illustrate a color filter according to an embodiment of the present invention.

도 4는 본 발명의 실시예에 따른 컬러필터의 제작방법을 설명하기 위한 도면.4 is a view for explaining a manufacturing method of a color filter according to an embodiment of the present invention.

(도면의 주요 부분에 대한 부호의 설명)(Explanation of symbols for the main parts of the drawing)

11 : 홀로그램 필름 12a : 레드 서브 픽셀11: hologram film 12a: red subpixel

12b : 그린 서브 픽셀 12c : 블루 서브 픽셀12b: green subpixel 12c: blue subpixel

20 : 컬러필터 30 : 포토 마스크20: color filter 30: photo mask

40a : 오브젝트 빔 40b : 레퍼런스 빔40a: object beam 40b: reference beam

상기와 같은 목적을 달성하기 위한 본 발명의 TFT-LCD의 컬러필터는, 상기 TFT-LCD의 컬러화를 실현하기 위하여 구비되는 컬러필터로서, 홀로그램 필름에 레드, 그린 및 블루의 서브 픽셀이 구현되어 이루어진 것을 특징으로 한다.The color filter of the TFT-LCD of the present invention for achieving the above object is a color filter provided to realize the colorization of the TFT-LCD, the sub-pixels of red, green and blue are implemented on the hologram film It is characterized by.

본 발명에 따르면, 홀로그라픽 기술을 이용하여 컬러필터를 제작함으로써, 다양한 TFT-LCD 제품에 적용 가능하며, 아울러, 상기 컬러필터의 제조 시간을 감소시킬 수 있다.According to the present invention, by manufacturing a color filter using a holographic technology, it can be applied to various TFT-LCD products, and also reduce the manufacturing time of the color filter.

(실시예)(Example)

이하, 첨부된 도면에 의거하여 본 발명의 바람직한 실시예를 보다 상세하게 설명하도록 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2 및 도 3은 본 발명의 실시예에 따른 홀로그라픽 기술에 의해 제작된 컬러필터를 도시한 도면이고, 도 4는 그의 제작방법을 설명하기 위한 도면이다.2 and 3 are views illustrating a color filter manufactured by the holographic technique according to an embodiment of the present invention, Figure 4 is a view for explaining the manufacturing method thereof.

먼저, 도 2에 도시된 바와 같이, 본 발명의 실시예에 따른 컬러필터(20)를 구현하기 위해, 세 장의 홀로그램 필름(11)에 각각 레드, 그린 및 블루의 서브 픽셀(12a, 12b, 12c)을 구현하고, 그런다음, 상기 서브 픽셀들(12a, 12b, 12c)이 구현된 세 장의 홀로그램 필름들(11)을 적층시킨다.First, as shown in FIG. 2, in order to implement the color filter 20 according to the exemplary embodiment of the present invention, the red, green, and blue subpixels 12a, 12b, and 12c are respectively formed on the three hologram films 11. ), And then the three hologram films 11 in which the subpixels 12a, 12b, and 12c are implemented are laminated.

여기서, 상기 홀로그램 필름(11)에 레드, 그린, 및 블루의 서브 픽셀을 구현하기 위해서는, 도 4에 도시된 바와 같이, 홀로그램 필름(11)의 하부에 구현하고자 하는 서브 픽셀과 그 크기 및 위치가 동일한 마스크 패턴이 구비되어 있는 포토 마스크(30)를 배치시키고, 그런다음, 상기 포토 마스크(30)의 하부로부터 레드, 그린, 또는 블루 중에서 하나의 색을 띄게 하는 오브젝트 빔(Obrect Beam : 40a)과 백 라이트와 유사한 레퍼런스 빔(Reference Beam : 40b)을 동시에 조사시킨다.Here, in order to implement red, green, and blue subpixels in the hologram film 11, as shown in FIG. 4, the subpixels to be implemented under the hologram film 11, and their size and position The photo mask 30 having the same mask pattern is disposed, and then an object beam 40a and a color of red, green, or blue are displayed from the bottom of the photo mask 30. Simultaneously irradiate a reference beam (Reference Beam: 40b) similar to the backlight.

또한, 본 발명의 다른 실시예로서, 도 3에 도시된 바와 같이, 하나의 홀로그램 필름(11)에 레드, 그린 및 블루의 서브 픽셀들(12a, 12b, 12c)을 모두 구현하여 컬러필터를 제작할 수도 있는데, 이 경우에는, 도시되지는 않았으나, 홀로그램 필름의 하부에 레드, 그린 및 블루의 서브 픽셀과 동일한 크기 및 위치의 마스크 패턴이 구비된 포토 마스크를 배치시키고, 그런다음, 레퍼런스 빔과 오브젝트 빔을 선택적으로 조사시켜, 삼색의 서브 픽셀들을 구현한다.In addition, as another embodiment of the present invention, as shown in FIG. 3, the red, green, and blue subpixels 12a, 12b, and 12c are all implemented on one hologram film 11 to manufacture a color filter. In this case, although not shown, a photo mask having a mask pattern of the same size and position as that of the red, green, and blue subpixels is disposed below the hologram film, and then the reference beam and the object beam are disposed. Is selectively irradiated to implement tricolor subpixels.

한편, 홀로그라픽 기술을 이용하여 컬러필터를 구현하기 위해서는, 홀로그램 필름, 포토 마스크, 레퍼런스 빔 및 오브젝트 빔으로 이루어진 광 소오스, 홀로그램 필름을 제작하기 위한 광학적 기구물들(Optics), 광 소오스를 조작하기 위한 기구들 및 위치 이동 시스템 등이 필요하다.Meanwhile, in order to implement a color filter using holographic technology, an optical source consisting of a hologram film, a photo mask, a reference beam, and an object beam, optical instruments for manufacturing the hologram film, and an optical source for manipulating the optical source Mechanisms and position movement systems and the like.

본 발명의 실시예에 따른 홀로그라픽 기술을 이용하여 제작된 컬러필터는 다음과 같은 잇점을 얻을 수 있다.The color filter manufactured using the holographic technique according to the embodiment of the present invention can obtain the following advantages.

먼저, 인쇄기법을 이용하는 방법에 비해 제작이 간편하고, 그리고, 다양한 구동 방식에 적용 가능하다. 또한, 오브젝트 빔 및 레퍼런스 빔의 배열을 조절함으로써, 광시야각 또는 협시야각과 같은 시야각 특성에 적합한 컬러필터의 제작이 가능하고, 게다가, 레퍼런스 빔의 방향 및 각도를 조절함으로써, 투과형 및 반사형 TFT-LCD의 조건을 만족시키는 컬러필터를 제작할 수 있다.First, the production is simpler than the method using the printing technique, and can be applied to various driving methods. Further, by adjusting the arrangement of the object beam and the reference beam, it is possible to manufacture a color filter suitable for viewing angle characteristics such as wide viewing angle or narrow viewing angle, and furthermore, by adjusting the direction and angle of the reference beam, the transmissive and reflective TFT- It is possible to produce a color filter that satisfies the conditions of the LCD.

이상에서와 같이, 본 발명은 홀로그라픽 기술을 이용하여 컬러필터를 제작하기 때문에, 인쇄기법을 이용하여 컬러필터를 제작하는 기존의 방법에 비해, 공정 상의 결함을 방지할 수 있고, 제조 시간도 단축시킬 수 있다.As described above, since the present invention manufactures color filters using holographic technology, process defects can be prevented and manufacturing time can be shortened as compared with the conventional methods of manufacturing color filters using printing techniques. You can.

또한, 홀로그라픽 기술을 이용한 컬러필터는 다양한 목적에 적합하도록 제작할 수 있기 때문에, 이러한 컬러필터를 갖는 TFT-LCD는 다양한 응용 분야에 적절하게 적용할 수 있다.In addition, since the color filter using the holographic technique can be manufactured to suit various purposes, the TFT-LCD having such a color filter can be suitably applied to various application fields.

기타, 본 발명은 그 요지를 일탈하지 않는 범위에서 다양하게 변경하여 실시할 수 있다.In addition, this invention can be implemented in various changes within the range which does not deviate from the summary.

Claims (3)

박막 트랜지스터 액정표시장치의 컬러화를 실현하기 위하여 구비되는 컬러필터로서,A color filter provided to realize colorization of a thin film transistor liquid crystal display device, 홀로그램 필름에 레드, 그린 및 블루의 서브 픽셀이 구현되어 이루어진 것을 특징으로 하는 박막 트랜지스터 액정표시장치의 컬러필터.The color filter of the thin film transistor liquid crystal display device, characterized in that the sub-pixels of red, green and blue are implemented on the hologram film. 제 1 항에 있어서, 상기 컬러필터는,The method of claim 1, wherein the color filter, 레드, 그린 및 블루의 서브 픽셀이 각각 구현된 세 장의 홀로그램 필름이 합착되어 이루어진 것을 특징으로 하는 박막 트랜지스터 액정표시장치의 컬러필터.3. A color filter of a thin film transistor liquid crystal display, characterized in that three hologram films, each of which is implemented with red, green, and blue subpixels, are bonded to each other. 제 1 항에 있어서, 상기 컬러필터는,The method of claim 1, wherein the color filter, 한 장의 홀로그램 필름에 레드, 그린, 및 블루의 서브 픽셀이 모두 구현된 것을 특징으로 하는 박막 트랜지스터 액정표시장치의 컬러필터.A color filter of a thin film transistor liquid crystal display device, wherein all of the red, green, and blue sub pixels are implemented on a single hologram film.
KR1019990063267A 1999-12-28 1999-12-28 Color filter in tft-lcd KR20010060824A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6917368B2 (en) * 2003-03-04 2005-07-12 Clairvoyante, Inc. Sub-pixel rendering system and method for improved display viewing angles
US9869896B2 (en) 2014-12-22 2018-01-16 Samsung Display Co., Ltd. Display device, color conversion film, and manufacturing method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6917368B2 (en) * 2003-03-04 2005-07-12 Clairvoyante, Inc. Sub-pixel rendering system and method for improved display viewing angles
US9869896B2 (en) 2014-12-22 2018-01-16 Samsung Display Co., Ltd. Display device, color conversion film, and manufacturing method thereof

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