KR20050079813A - Color filter substrate and manufacturing method thereof - Google Patents
Color filter substrate and manufacturing method thereof Download PDFInfo
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- KR20050079813A KR20050079813A KR1020040007931A KR20040007931A KR20050079813A KR 20050079813 A KR20050079813 A KR 20050079813A KR 1020040007931 A KR1020040007931 A KR 1020040007931A KR 20040007931 A KR20040007931 A KR 20040007931A KR 20050079813 A KR20050079813 A KR 20050079813A
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- blocking layers
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
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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
- G02F1/1335—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
- G02F2203/00—Function characteristic
- G02F2203/02—Function characteristic reflective
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- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Optical Filters (AREA)
Abstract
본 발명은 블랙 매트릭스 위 부분에 금속 반사막을 형성하여 RGB 각각의 색이 혼합되지 않도록 하여 색감도 및 광감도를 향상시킨 컬러 필터 기판 및 그 제조 방법을 개시한다. 본 발명에 따르면, 다수의 차광층은 상부 기판 상에 등 간격으로 배치된다. RGB 층은 다수의 차광막 위에 형성된다. 다수의 반사막이 다수의 차광층 위 및 양쪽 중의 하나에 형성된다.The present invention discloses a color filter substrate and a method of manufacturing the same, which form a metal reflective film on the black matrix to prevent each of the RGB colors from being mixed to improve color sensitivity and light sensitivity. According to the present invention, the plurality of light blocking layers are arranged at equal intervals on the upper substrate. The RGB layer is formed over a plurality of light shielding films. A plurality of reflecting films are formed over one of the plurality of light blocking layers and both.
Description
본 발명은 컬러 필터 기판에 관한 것으로, 보다 상세하게는, 블랙 매트릭스 위 부분 또는 양쪽에 색이 혼합되는 것을 방지하기 위한 금속 반사막을 형성한 컬러 필터 기판 및 그 제조 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color filter substrate, and more particularly, to a color filter substrate having a metal reflective film for preventing color from being mixed on a portion or both sides of a black matrix, and a manufacturing method thereof.
도 1은 종래의 컬러 필터 기판을 나타낸 단면도이다. 1 is a cross-sectional view showing a conventional color filter substrate.
도 1을 참조하면. 종래의 컬러 필터 기판을 제조하는 방법은 블랙 매트릭스(102)를 형성하는 제1 단계; RGB 층(104)을 상기 블랙 매트릭스(102) 위에 형성하는 단계; 상기 RGB 층(104) 위에 오버 코트층(106)를 형성하는 단계; 및 포토 스페이서를 형성하는 단계로 구성되어 있다. 현재 컬러 필터의 구성으로는 직선 및 각도가 크지 않게 입사되는 빛은 색 감도에 문제가 발생하지 않으나, 빛의 입사각이 큰 경우 블랙 매트릭스 윗 부분으로 통과하는 빛은 영역 "A"에서 서로 섞여 혼색되므로 감도가 나빠지게 된다. 혼색이 발생하지 않게 하려면 현재의 컬러 필터로는 블랙 매트릭스 패턴이 커져야 한다. 이것은 개구율이 작아지는 문제가 발생하므로 컬러 필터의 성능 저하로 이어진다.Referring to FIG. 1. A conventional method of manufacturing a color filter substrate includes a first step of forming a black matrix (102); Forming an RGB layer (104) over the black matrix (102); Forming an overcoat layer (106) over the RGB layer (104); And forming a photo spacer. In the current color filter configuration, light that is incident on a straight line or a small angle does not cause color sensitivity. However, when a light incident angle is large, light passing through the upper portion of the black matrix is mixed and mixed in the area "A". Sensitivity becomes worse. In order to prevent color mixing, the black matrix pattern must be large with current color filters. This causes a problem that the aperture ratio becomes small, which leads to deterioration of the color filter.
따라서, 본 발명은 상기한 종래 기술의 제반 문제점을 해결하기 위하여 안출된 것으로서, 블랙 매트릭스 위 부분에 금속 반사막을 형성하여 RGB 각각의 색이 혼합되지 않도록 하여 색감도 및 광감도를 향상시킨 컬러 필터 기판 및 그 제조 방법을 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above-mentioned problems of the prior art, a color filter substrate which improves the color sensitivity and light sensitivity by forming a metal reflective film on the black matrix so as not to mix the respective colors of RGB and The purpose is to provide a method for producing the same.
상기 목적을 달성하기 위하여, 본 발명은 상부 기판; 상부 기판 상에 등 간격으로 배치되는 다수의 차광층; 상기 다수의 차광막 위에 형성된 RGB 층; 및 상기 다수의 차광층 위 및 양쪽 중의 하나에 형성되는 다수의 반사막을 포함하는 것을 특징으로 하는 컬러 필터 기판을 제공한다.In order to achieve the above object, the present invention is an upper substrate; A plurality of light blocking layers disposed on the upper substrate at equal intervals; An RGB layer formed on the plurality of light blocking films; And a plurality of reflective films formed on one of the plurality of light blocking layers and both of the plurality of light blocking layers.
또한, 본 발명은 또한 상부 기판을 준비하는 단계; 상기 상부 기판 상에 등 간격으로 배치되는 다수의 차광층 및 RGB 층을 순차적으로 형성하는 단계; 및 상기 다수의 차광층 위 또는 양쪽에 다수의 반사막을 각각 형성하는 단계를 포함하는 것을 특징으로 하는 컬러 필터 기판의 제조 방법을 제공한다.In addition, the present invention also comprises the steps of preparing the upper substrate; Sequentially forming a plurality of light blocking layers and RGB layers disposed on the upper substrate at equal intervals; And forming a plurality of reflective films on the plurality of light blocking layers or on both sides of the light blocking layers, respectively.
(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 2는 본 발명의 제1 실시예에 따른 컬러 필터 기판을 나타낸 단면도이다. 2 is a cross-sectional view illustrating a color filter substrate according to a first exemplary embodiment of the present invention.
본 발명의 제1 실시예에 따른 컬러 필터 기판은 상부 기판(202), 상부 기판 상에 등 간격으로 배치되는 다수의 차광층(204), 상기 다수의 차광층(204) 위에 형성된 RGB 층(206), 및 상기 다수의 차광층(204) 위에 형성되는 다수의 금속 반사막(208)을 포함한다. 상기 차광층(204)은 블랙 매트릭스를 포함한다. The color filter substrate according to the first embodiment of the present invention includes an upper substrate 202, a plurality of light blocking layers 204 arranged at equal intervals on the upper substrate, and an RGB layer 206 formed on the plurality of light blocking layers 204. And a plurality of metal reflective films 208 formed on the plurality of light blocking layers 204. The light blocking layer 204 includes a black matrix.
하부 기판(200)과 일정 간격 유지하여 대향되게 배치된 상부 기판(202) 상에 등 간격으로 배치되는 다수의 차광층(204) 및 RGB 층(206)을 순차적으로 형성한다.A plurality of light blocking layers 204 and RGB layers 206 arranged at equal intervals are sequentially formed on the upper substrate 202 disposed to face the lower substrate 200 at a predetermined interval.
상기 금속 반사막(208)은 Al, Cr, Cu, Mo, 또는 AlNd 등 반사율이 우수한 재질에 의해 형성된다. 상기 금속 반사막(208)의 두께는 배향막 공정시 평탄화를 고려하여 2 ㎛ 이내가 바람직하다.The metal reflective film 208 is formed of a material having excellent reflectance such as Al, Cr, Cu, Mo, or AlNd. The thickness of the metal reflective film 208 is preferably within 2 μm in consideration of planarization during the alignment film process.
백 라이트에서 나온 빛은 하판(200) 및 액정층을 통과하여 상판에 도달하면 RGB 층(206)을 통과하게 되는데, 이 때 각각의 RGB 층(206)을 통과한 빛이 서로 섞이지 않고 최대한 순수한 색을 나타낼 수 있도록 금속 반사막(208)으로 각도가 큰 빛은 반사시켜 서로의 색이 혼합되지 않도록 광 경로를 바꾸어 준다.When the light from the backlight passes through the lower plate 200 and the liquid crystal layer and reaches the upper plate, the light passes through the RGB layer 206, where the light passing through each of the RGB layers 206 does not mix with each other and is as pure as possible. The light reflects a large angle with the metal reflective film 208 to change the light path so that the colors of each other are not mixed.
도 2에 도시된 바와 같이, 한 화소를 통과한 빛이 상기 차광층(204)에 흡수되지 못할 경우, 다른 화소의 색과 혼색이 일어나게 되며, 색 감도가 나빠지게 되어 제품의 특성에 좋지 않은 결과가 초래된다. 이러한 경우를 방지하기 위하여 상기 차광막(204) 위에 상기 금속 반사막(208)을 형성하여 혼색이 발생할 가능성이 있는 부분을 통과하는 빛을 반사시켜 색 감도를 높일 수 있다.As shown in FIG. 2, when light passing through one pixel is not absorbed by the light shielding layer 204, color mixing with other pixels occurs, and color sensitivity is deteriorated, which is not good for product characteristics. Is brought about. In order to prevent such a case, the metal reflective film 208 may be formed on the light blocking film 204 to reflect light passing through a portion where color mixing may occur, thereby improving color sensitivity.
도 3은 본 발명의 제2 실시예에 따른 컬러 필터 기판을 나타낸 단면도이다. 3 is a cross-sectional view illustrating a color filter substrate according to a second exemplary embodiment of the present invention.
본 발명의 제2 실시예에 따른 컬러 필터 기판은 상부 기판(302), 상부 기판(302) 상에 등 간격으로 배치되는 다수의 차광층(304), 상기 다수의 차광층(304) 위에 형성된 RGB 층(306), 및 상기 다수의 차광층(304) 양쪽에 형성되는 다수의 금속 반사막(308)을 포함한다. The color filter substrate according to the second exemplary embodiment of the present invention includes an upper substrate 302, a plurality of light blocking layers 304 disposed at equal intervals on the upper substrate 302, and RGB formed on the plurality of light blocking layers 304. A layer 306 and a plurality of metal reflective films 308 are formed on both sides of the plurality of light blocking layers 304.
본 발명의 제2 실시예에 의하면, 도 3에 도시된 바와 같이, 금속 반사막(308)을 차광층(304) 위가 아닌 양쪽으로 형성하여 동일한 효과를 얻을 수 있다.According to the second embodiment of the present invention, as shown in FIG. 3, the same effect can be obtained by forming the metal reflective film 308 on both sides of the light shielding layer 304.
이상에서는 본 발명을 특정의 바람직한 실시예로서 설명하였으나, 본 발명은 상기한 실시예에 한정되지 아니하며, 특허 청구의 범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형이 가능할 것이다.Although the present invention has been described as a specific preferred embodiment, the present invention is not limited to the above-described embodiments, and the present invention is not limited to the above-described embodiments without departing from the gist of the present invention as claimed in the claims. Anyone with a variety of variations will be possible.
따라서, 본 발명은 색의 혼합에 의한 색감도가 저하되는 공정 구조를 개선함으로써 각각의 색이 혼합되지 않고 각각의 색이 최대한 순수한 색을 나타내게 함으로 특성이 우수한 액정 표시 장치를 제조할 수 있으며, 각도가 큰 빛이 반사되어 질 경우 시야각의 향상에도 효과가 있다.Accordingly, the present invention improves the process structure in which the color sensitivity is lowered due to the mixing of colors, so that each color is not mixed and each color exhibits the purest color. If large light is reflected, it is also effective to improve the viewing angle.
도 1은 종래의 컬러 필터를 나타낸 단면도.1 is a cross-sectional view showing a conventional color filter.
도 2는 본 발명의 제1 실시예에 따른 컬러 필터를 나타낸 단면도.2 is a sectional view showing a color filter according to a first embodiment of the present invention;
도 3은 본 발명의 제2 실시예에 따른 컬러 필터를 나타낸 단면도.3 is a sectional view showing a color filter according to a second embodiment of the present invention;
*도면의 주요 부분에 대한 부호 설명** Description of symbols on the main parts of the drawings *
202: 상부 기판 204: 차광층202: upper substrate 204: light shielding layer
206: 금속 반사막 302: 상부 기판206: metal reflective film 302: upper substrate
304: 차광층 306: 금속 반사막304: Light shielding layer 306: Metal reflective film
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