KR100362471B1 - Digital color signal controller - Google Patents

Digital color signal controller Download PDF

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Publication number
KR100362471B1
KR100362471B1 KR1019950066742A KR19950066742A KR100362471B1 KR 100362471 B1 KR100362471 B1 KR 100362471B1 KR 1019950066742 A KR1019950066742 A KR 1019950066742A KR 19950066742 A KR19950066742 A KR 19950066742A KR 100362471 B1 KR100362471 B1 KR 100362471B1
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South Korea
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color signal
subtractor
color
digital
digital color
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KR1019950066742A
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Korean (ko)
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KR970048770A (en
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윤원봉
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삼성전자 주식회사
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

PURPOSE: A digital color signal controller is provided to control red, green and blue color signals to adjust brightness of each color so as to represent a desired color. CONSTITUTION: A digital color signal controller includes the first, second and third subtracters(1,2,3), and an interface integrated circuit(4). The first subtracter receives a digital red color signal output from a graphic card and reduces its grey level by a desired degree. The second subtracter accepts a digital green color signal output from the graphic card and reduces its grey level by a desired degree. The third subtracter receives a digital blue color signal output from the graphic card and reduces its grey level by a desired degree. The interface integrated circuit accepts the output signals of the first, second and third subtracters and a control signal and outputs digital color signals with the brightness of each color being adjusted to a liquid crystal display driving circuit.

Description

디지탈 색상신호 조정장치Digital Color Signal Adjuster

이 발명은 디지탈 색상신호 조정장치에 관한 것으로서, 더욱 상세하게 말하자면 박막 트랜지스터 액정표시장치(TFT-LCD, Thin Film Transistor - Liquid Crystal Display)에서 색상을 구현할 때, 디지탈 데이타인 적(Red), 녹(Green), 청(Blue)의 색상신호를 제어하여 각 색의 밝기 정도를 조정함으로써 전체 화면의 색상 조합이 자연색을 표현하도록 하는 디지탈 색상신호 조정장치에 관한 것이다.The present invention relates to a digital color signal adjusting device, and more specifically, to realizing color in a thin film transistor liquid crystal display (TFT-LCD), digital data such as red and green ( The present invention relates to a digital color signal adjusting device for controlling a color signal of green and blue to adjust the brightness degree of each color so that the color combination of the entire screen expresses natural colors.

박막 트랜지스터 액정표시장치는 색상을 구현하기 위해 각 화소를 적, 녹, 청의 세가지 픽셀로 나누고 이를 각각 그레이(Gray)별로 제어함으로써 원하는 색을 표시하게 된다.A thin film transistor liquid crystal display displays a desired color by dividing each pixel into three pixels, red, green, and blue, and controlling each gray for each color to realize color.

색상표시 특성을 향상시키기 위해 적, 녹, 청 각각의 컬러 필터(ColorFilter)의 재질, 투과도, 두께 등을 조절하여 백 라이트(Back Light)의 빛을 통과시켜 육안으로 볼 수 있도록 한다.To improve the color display characteristics, the material, transmittance, and thickness of each color filter (red, green, and blue) are adjusted to allow the user to see through the light of the back light.

그러나, 상기한 종래의 기술은 공정상의 제어로 최종 화면 색상 특성을 제어하는데 많은 어려움이 따르는 문제점이 있다.However, the above-described conventional technology has a problem in that it is difficult to control the final screen color characteristics by process control.

따라서, 이 발명의 목적은 상기한 종래의 문제점을 해결하기 위한 것으로서, 디지탈 데이타인 적, 녹, 청의 색상신호를 제어하여 각 색의 밝기 정도를 조정함으로써 전체 화면의 색상 조합이 자연색을 표현하도록 하는 디지탈 색상신호 조정장치를 제공하기 위한 것이다.Accordingly, an object of the present invention is to solve the above-mentioned problems, and to control the color signals of red, green, and blue, which are digital data, to adjust the degree of brightness of each color so that the color combination of the entire screen expresses natural colors. It is to provide a digital color signal adjusting device.

상기한 목적을 달성하기 위한 수단으로서 이 발명의 구성은,As a means for achieving the above object, the configuration of the present invention,

그래픽 카드(Graphic Card)에서 출력되는 적색을 나타내는 디지탈 색상신호를 입력받아, 적색의 그레이 레벨을 원하는 만큼 감소시켜 출력하는 제1 감산기와;A first subtractor for receiving a digital color signal representing red output from a graphic card and reducing and outputting a red gray level as desired;

그래픽 카드에서 출력되는 녹색을 나타내는 디지탈 색상신호를 입력받아, 녹색의 그레이 레벨을 원하는 만큼 감소시켜 출력하는 제2 감산기와;A second subtractor for receiving a digital color signal representing green output from the graphic card and reducing and outputting a green gray level as desired;

그래픽 카드에서 출력되는 청색을 나타내는 디지탈 색상신호를 입력받아, 청색의 그레이 레벨을 원하는 만큼 감소시켜 출력하는 제3 감산기와;A third subtractor for receiving a digital color signal representing blue output from the graphics card and reducing and outputting a gray level of blue as desired;

상기 제1 감산기, 제2 감산기, 제3 감산기의 출력신호와 제어 신호를 입력받아, 각 색의 밝기가 조정된 디지탈 색상신호를 액정표시장치 구동회로로 출력하는 인터페이스 집적회로(Interface IC)로 이루어진다.An interface IC which receives the output signals and the control signals of the first subtractor, the second subtractor, and the third subtractor, and outputs a digital color signal of which brightness of each color is adjusted to a liquid crystal display driving circuit; .

상기한 구성에 의하여,이 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 이 발명을 용이하게 실시할 수 있는 가장 바람직한 실시예를 첨부된 도면을참조로 하여 상세히 설명한다.With the above configuration, the most preferred embodiment which can be easily carried out by those skilled in the art to which the present invention pertains will be described in detail with reference to the accompanying drawings.

제1도는 이 발명의 실시예에 따른 디지탈 색상신호 조정장치의 구성도이다.1 is a configuration diagram of a digital color signal adjusting device according to an embodiment of the present invention.

제1도에 도시되어 있는 바와 같이, 이 발명의 실시예에 따른 디지탈 색상신호 조정장치의 구성은,As shown in FIG. 1, the configuration of the digital color signal adjusting apparatus according to the embodiment of the present invention is

그래픽 카드에서 출력되는 적색을 나타내는 디지탈 색상신호(R)를 입력받아,적색의 그레이 레벨을 원하는 만큼 감소시켜 출력하는 제1 감산기(1)와; 그래픽 카드에서 출력되는 녹색을 나타내는 디지탈 색상신호(G)를 입력받아, 녹색의 그레이 레벨을 원하는 만큼 감소시켜 출력하는 제2 감산기(2)와, 그래픽 카드에서 출력되는 청색을 나타내는 디지탈 색상신호(B)를 입력받아, 청색의 그레이 레벨을 원하는 만큼 감소시켜 출력하는 제3 감산기(3)와; 상기 제1 감산기(1), 제2 감산기(2), 제3 감산기(3)의 출력신호와 제어 신호를 입력받아, 각 색의 밝기가 조정된 디지탈 색상신호를 액정표시장치 구동회로로 출력하는 인터페이스 집적회로(4)로 이루어진다.A first subtractor 1 which receives a digital color signal R representing red output from the graphics card and reduces and outputs a red gray level as desired; A second subtractor 2 which receives the digital color signal G representing green output from the graphics card, reduces the gray level of green as desired, and outputs a digital color signal B representing blue output from the graphics card. A third subtractor (3) which receives)) and reduces and outputs the gray level of blue as desired; The output signal and the control signal of the first subtractor 1, the second subtractor 2, and the third subtractor 3 are input to output a digital color signal of which brightness of each color is adjusted to a liquid crystal display driving circuit. It consists of an interface integrated circuit (4).

상기한 구성에 의한, 이 발명의 실시예에 따른 디지탈 색상신호 조정장치의 작용은 다음과 같다.The operation of the digital color signal adjusting device according to the embodiment of the present invention by the above configuration is as follows.

개인용 컴퓨터의 그래픽 카드에서 나오는 색신호의 데이타 비트가 적, 녹, 청 각각 6비트라고 하면, 64( = 26)가지의 그레이 표현이 가능하고, 262,144( = 26* 26* 26) 가지의 색상 표시가 가능하다.If the data bits of the color signal from the personal computer's graphics card are 6 bits each, red, green, and blue, 64 (= 2 6 ) gray representations are possible, and 262,144 (= 2 6 * 2 6 * 2 6 ) Color display is possible.

하지만, 적, 녹, 청 각 색의 밝기 비율이 원하는대로 정확히 표시되지 않는한 정확한 색상 표시를 위해서는 약간의 조정이 필요하다.However, some adjustments are required for accurate color display unless the brightness ratios of red, green, and blue are exactly as desired.

그래픽 카드에서 적, 녹, 청의 디지탈 색상신호가 출력되면, 제1 감산기(1)는 적색을 나타내는 디지탈 색상신호를 입력받아, 그레이 레벨을 원하는 만큼 감소시켜 출력한다.When the digital color signals of red, green, and blue are output from the graphic card, the first subtractor 1 receives the digital color signal representing red, and reduces and outputs the gray level as desired.

제2 감산기(2)는 그래픽 카드에서 출력되는 녹색을 나타내는 디지탈 색상신호를 입력받아, 그레이 레벨을 원하는 만큼 감소시켜 출력한다.The second subtractor 2 receives a digital color signal representing green output from the graphic card, and reduces and outputs the gray level as desired.

또한, 제3 감산기(3)는 그래픽 카드에서 출력되는 청색을 나타내는 디지탈 색상신호를 입력받아, 그레이 레벨을 원하는 만큼 감소시켜 출력한다.In addition, the third subtractor 3 receives a digital color signal representing blue output from the graphics card, and reduces and outputs the gray level as desired.

상기 제1 감산기(1), 제2 감산기(2), 제3 감산기(3)에서 적(R), 녹(G), 청(B) 각각의 그레이 레벨이 조정되면, 인터페이스 집적회로(4)는 상기 제1 감산기(1), 제2 감산기(2), 제3 감산기(3)의 출력신호와 제어 신호를 입력받아, 각 색의 밝기가 조정된 디지탈 색상신호를 다음단의 액정표시장치 구동회로로 출력하여, 원하는 색상 표시가 가능하게 한다.When the gray levels of red (R), green (G), and blue (B) are adjusted in the first subtractor 1, the second subtractor 2, and the third subtractor 3, the interface integrated circuit 4 The first subtractor 1, the second subtractor 2, and the third subtractor 3 receives the output signal and the control signal, the digital color signal in which the brightness of each color is adjusted, It outputs to the furnace, enabling the desired color display.

이상에서와 같이 이 발명의 실시예에서, 디지탈 데이타인 적, 녹, 청의 색상신호를 제어하여 각 색의 밝기 정도를 조정함으로써 전체 화면의 색상 조합이 자연색을 표현하도록 하며, 원하는 색상 표시가 가능하게 하는 효과를 가진 디지탈 색상신호 조정장치를 제공할 수 있다.As described above, in the embodiment of the present invention, by controlling the color signal of red, green, and blue which are digital data, the color combination of the entire screen is expressed by natural color and the desired color display is possible by adjusting the brightness of each color. It is possible to provide a digital color signal adjusting device having an effect.

이 발명의 이러한 효과는 노트북 개인용 컴퓨터용 액정표시장치 모듈 분야에 이용될 수 있다.This effect of the present invention can be used in the field of liquid crystal display module for notebook personal computer.

제1도는 이 발명의 실시예에 따른 디지탈 색상신호 조정장치의 구성도이다.1 is a configuration diagram of a digital color signal adjusting device according to an embodiment of the present invention.

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

1 : 제1 감산기 2 : 제2 감산기1: first subtractor 2: second subtractor

3 : 제3 감산기 4 : 인터페이스 집적회로3: third subtractor 4: interface integrated circuit

Claims (1)

그래픽 카드에서 출력되는 적색을 나타내는 디지탈 색상신호를 입력받아, 그레이 레벨을 원하는 만큼 감소시켜 출력하는 제1감산기와; 그래픽 카드에서 출력되는 녹색을 나타내는 디지탈 색상신호를 입력받아, 그레이 레벨을 원하는 만큼 감소시켜 출력하는 제2 감산기와; 그래픽 카드에서 출력되는 청색을 나타내는 디지탈 색상신호를 입력받아, 그레이 레벨을 원하는 만큼 감소시켜 출력하는 제3감산기와; 상기 제1 감산기, 제2 감산기, 제3 감산기의 출력신호와 제어 신호를 입력받아, 각 색의 밝기가 조정된 디지탈 색상신호를 액정표시장치 구동회로로 출력하는 인터페이스 집적회로로 이루어지는 것을 특징으로 하는 디지탈 색상신호 조정장치.A first subtractor for receiving a digital color signal representing red output from the graphics card and reducing and outputting a gray level as desired; A second subtractor for receiving a digital color signal representing green output from the graphic card and reducing and outputting a gray level as desired; A third subtractor for receiving a digital color signal representing blue output from the graphics card and reducing and outputting a gray level as desired; And an interface integrated circuit which receives the output signals and the control signals of the first subtractor, the second subtractor, and the third subtractor, and outputs a digital color signal whose brightness of each color is adjusted to a liquid crystal display driving circuit. Digital color signal adjuster.
KR1019950066742A 1995-12-29 1995-12-29 Digital color signal controller KR100362471B1 (en)

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KR100687319B1 (en) * 1999-05-07 2007-02-27 비오이 하이디스 테크놀로지 주식회사 Timing controller for lcd
KR100806909B1 (en) * 2001-12-13 2008-02-22 삼성전자주식회사 device for driving liquid crystal device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920005596A (en) * 1990-08-31 1992-03-28 강진구 Peaking Brightness Correction Circuit
KR950010519A (en) * 1993-09-16 1995-04-28 모리시타 요이찌 Noise reduction device
JPH07270755A (en) * 1995-04-14 1995-10-20 Casio Comput Co Ltd Liquid crystal drive circuit
KR950029804A (en) * 1994-04-07 1995-11-24 김광호 Signal Processing Device and Method of 2 Panel Liquid Crystal Projector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920005596A (en) * 1990-08-31 1992-03-28 강진구 Peaking Brightness Correction Circuit
KR950010519A (en) * 1993-09-16 1995-04-28 모리시타 요이찌 Noise reduction device
KR950029804A (en) * 1994-04-07 1995-11-24 김광호 Signal Processing Device and Method of 2 Panel Liquid Crystal Projector
JPH07270755A (en) * 1995-04-14 1995-10-20 Casio Comput Co Ltd Liquid crystal drive circuit

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