KR20120020666A - Liquid crystal display device and method of driving the same - Google Patents

Liquid crystal display device and method of driving the same Download PDF

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KR20120020666A
KR20120020666A KR1020100084415A KR20100084415A KR20120020666A KR 20120020666 A KR20120020666 A KR 20120020666A KR 1020100084415 A KR1020100084415 A KR 1020100084415A KR 20100084415 A KR20100084415 A KR 20100084415A KR 20120020666 A KR20120020666 A KR 20120020666A
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liquid crystal
crystal panel
driving
subpixels
gate
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KR1020100084415A
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KR101728782B1 (en
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김기덕
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엘지디스플레이 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
    • 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
    • G09G3/3406—Control of illumination source
    • 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
    • G09G3/3611—Control of matrices with row and column drivers
    • 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
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3614—Control of polarity reversal in general
    • 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
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • 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
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3696—Generation of voltages supplied to electrode drivers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving

Abstract

PURPOSE: A liquid crystal display apparatus and a driving method thereof are provided to improve image quality by improving a motor blur phenomenon. CONSTITUTION: A liquid crystal panel(200) comprises a plurality of gate lines(GL) and a plurality of data lines(DL). The gate lines are arranged along a column line. The data lines are arranged along a row line. An R sub-pixel(SP) is arranged on a first row line. A G sub-pixel is arranged on a second row line. A B sub-pixel is arranged on a third row line.

Description

액정표시장치 및 그 구동방법{liquid crystal display device and method of driving the same} Liquid crystal display device and method of driving the same

본발명은 액정표시장치에 관한 것으로서, 보다 상세하게는, 액정표시장치 및 그 구동방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device and a driving method thereof.

정보화 사회가 발전함에 따라 화상을 표시하기 위한 표시장치에 대한 요구가 다양한 형태로 증가하고 있으며, 근래에는 액정표시장치(LCD : liquid crystal display), 플라즈마표시장치(PDP : plasma display panel), 유기전계발광소자 (OLED : organic light emitting diode)와 같은 여러가지 평판표시장치(flat display device)가 활용되고 있다.As the information society develops, the demand for display devices for displaying images is increasing in various forms. Recently, liquid crystal displays (LCDs), plasma display panels (PDPs), organic fields Various flat display devices such as organic light emitting diodes (OLEDs) are being utilized.

이들 평판표시장치 중에서, 액정표시장치는 소형화, 경량화, 박형화, 저전력 구동의 장점을 가지고 있어 현재 널리 사용되고 있다. 한편, 다수의 화소가 매트릭스형태로 배치되고, 이들 화소 각각에 스위칭박막트랜지스터가 형성된 액티브 매트릭스 타입 액정표시장치가 현재 널리 사용되고 있다.Among these flat panel display devices, liquid crystal display devices are widely used because they have advantages of miniaturization, light weight, thinness, and low power driving. On the other hand, an active matrix liquid crystal display device in which a plurality of pixels are arranged in a matrix form and a switching thin film transistor is formed in each of these pixels is currently widely used.

최근에는, 액정표시장치는 대화면 고선명의 초고화질을 구현하고 있다. 또한, 액정표시장치의 보다 선명한 화질을 제공하기 위하여, 다수의 램프들로 구성되어 있는 백라이트는 스캐닝 구동방식으로 구동되고 있다.In recent years, liquid crystal displays have implemented ultra-high definition with large screens. In addition, in order to provide clearer image quality of the liquid crystal display, a backlight including a plurality of lamps is driven by a scanning driving method.

그러나, 백라이트가 액정패널의 상부 또는 하부에 위치하게 될 경우, 백라이트를 스캐닝 구동방식으로 구동 하기 어렵다는 문제점이 있다. However, when the backlight is located above or below the liquid crystal panel, there is a problem that it is difficult to drive the backlight by the scanning driving method.

본발명은, 백라이트가 액정패널의 장측을 따라서 위치하더라도 스캐닝 구동방식으로 백라이트를 구동할 수 있는 액정표시장치 및 그 구동방법을 재현하는데 그 과제가 있다.The present invention has a problem of reproducing a liquid crystal display device and a driving method thereof capable of driving the backlight by a scanning driving method even when the backlight is located along the long side of the liquid crystal panel.

이에 따라, 모션 블러 현상을 개선하여 보다 선명한 화질을 제공하는데 그 과제가 있다.Accordingly, there is a problem to provide a clearer picture quality by improving the motion blur phenomenon.

전술한 바와 같은 과제를 달성하기 위해, 본발명은, 서로 마주보는 두개의 장변 및 단변을 갖는 액정패널과; 상기 액정패널의 장변을 따라서 연장된 데이터배선과, 단변을 따라서 연장된게이트배선과; 상기 데이터배선과 연결된 데이터구동부와; 상기 게이트배선과 연결된 게이트구동부와; 상기 액정패널의 두 개의 장변 중 적어도 일측에 위치하고 다수의 블록으로구분된 다수의 LED와; 상기 다수의 블록을 순차적으로 구동하는 램프구동부를 포함하는 액정표시장치를 제공한다.In order to achieve the above object, the present invention, the liquid crystal panel having two long sides and short sides facing each other; A data line extending along the long side of the liquid crystal panel and a gate line extending along the short side; A data driver connected to the data line; A gate driver connected to the gate wiring; A plurality of LEDs disposed on at least one side of two long sides of the liquid crystal panel and divided into a plurality of blocks; Provided is a liquid crystal display including a lamp driver for sequentially driving the plurality of blocks.

상기 블록은, 상기 블록에 대응되는 게이트배선을 구동한 후에 구동된다.The block is driven after driving the gate wiring corresponding to the block.

입력 받은 영상데이터신호를 상기 액정패널의 화소 구조에 부합하도록 변환 및 정렬하여 상기 데이터구동부에 출력하는 타이밍제어부를 더욱 포함한다. The apparatus may further include a timing controller configured to convert the input image data signal so as to correspond to the pixel structure of the liquid crystal panel, and output the converted image data signal to the data driver.

상기 액정패널에 매트릭스 형태로 배치된 화소는 상기 장변 또는 단변 방향을 따라서 배치된 R, G, B 부화소 또는 R, G, B, W 부화소를 포함하거나, 상기 R, G, B, W 부화소를 포함하는 쿼드 구조로 배치된다.Pixels arranged in a matrix form on the liquid crystal panel include R, G, and B subpixels or R, G, B, and W subpixels disposed along the long side or short side direction, or the R, G, B, and W subpixels. It is arranged in a quad structure including pixels.

액정패널과, 상기 액정패널의 두 개의 장변 중 적어도 일측에 위치하고 다수의 블록으로 구분된 다수의 LED를 포함하는 액정표시장치의 구동방법에 있어서, 상기 블록을 순차적으로 구동하는 단계를 포함하는 액정표시장치 구동방법을 제공한다.A method of driving a liquid crystal display device comprising a liquid crystal panel and a plurality of LEDs disposed on at least one side of two long sides of the liquid crystal panel and divided into a plurality of blocks, the method comprising sequentially driving the blocks. Provided is a device driving method.

상기 블록을 순차적으로 구동하는 단계는, 상기 액정패널의 장변 방향을 따라 게이트배선을 순차적으로 구동하는 단계와; 상기 게이트배선의 구동에 대응하여, 상기 블록을 순차적으로 구동하는 단계를 포함한다.The driving of the blocks sequentially may include sequentially driving gate wirings along a long side of the liquid crystal panel; In response to driving of the gate wirings, sequentially driving the blocks.

입력 받은 영상데이터신호를 상기 액정패널의 화소 구조에 부합하도록 변환 및 정렬하여 데이터구동부에 출력하는 타이밍제어부를 더욱 포함한다. The apparatus may further include a timing controller configured to convert the input image data signal so as to correspond to the pixel structure of the liquid crystal panel, and output the converted image data signal to the data driver.

상기 액정패널에 매트릭스 형태로 배치된 화소는 상기 장변 또는 단변 방향을 따라서 배치된 R, G, B 부화소 또는 R, G, B, W 부화소를 포함하거나, 상기 R, G, B, W 부화소를 포함하는 쿼드 구조로 배치된다.Pixels arranged in a matrix form on the liquid crystal panel include R, G, and B subpixels or R, G, B, and W subpixels disposed along the long side or short side direction, or the R, G, B, and W subpixels. It is arranged in a quad structure including pixels.

본발명에 따른 액정표시장치는, 백라이트가 액정패널의 장변을 따라서 위치하더라도 백라이트를 스캐닝 방법으로 구동할 수 있다.The liquid crystal display according to the present invention can drive the backlight by a scanning method even if the backlight is located along the long side of the liquid crystal panel.

또한, 백라이트를 스캐닝 방법으로 구동함에 따라, MPRT 값을 좋게 하여, 액정패널의 동영상 화질을 향상시키는 효과가 있다.In addition, as the backlight is driven by the scanning method, the MPRT value is improved, thereby improving the video quality of the liquid crystal panel.

도 1은 본발명의 실시예에 따른 액정표시장치를 나타낸 개략적인 단면도.
도 2는 본발명의 실시예에 따른 부화소의 등가회로도.
도 3은 본발명의 실시예에 따른 액정패널에 인가되는 신호를 개략적으로 도시한 도면.
도 4는 본발명의 실시예에 따른 타이밍제어부를 나타낸 개략적인 단면도.
도 5은 본발명의 실시예에 따른 백라이트 구동방법을 개략적으로 도시한 도면.
1 is a schematic cross-sectional view showing a liquid crystal display device according to an embodiment of the present invention.
2 is an equivalent circuit diagram of a subpixel according to an embodiment of the present invention.
3 is a view schematically showing a signal applied to a liquid crystal panel according to an embodiment of the present invention.
4 is a schematic cross-sectional view showing a timing controller according to an embodiment of the present invention.
5 is a view schematically showing a backlight driving method according to an embodiment of the present invention.

이하, 도면을 참조하여 본발명의 실시예를 설명한다.Hereinafter, embodiments of the present invention will be described with reference to the drawings.

도 1은 본발명의 실시예에 따른 액정표시장치를 개략적으로 도시한 도면이고, 도 2는 본발명의 실시예에 따른 액정표시장치의 부화소를 도시한 등가회로도이다.1 is a view schematically showing a liquid crystal display according to an embodiment of the present invention, and FIG. 2 is an equivalent circuit diagram showing a subpixel of a liquid crystal display according to an embodiment of the present invention.

도시한 바와 같이, 본발명의 실시예에 따른 액정표시장치(100)는, 액정패널(200)과, 백라이트(900)와, 구동회로부를 포함한다.As illustrated, the liquid crystal display device 100 according to the embodiment of the present invention includes a liquid crystal panel 200, a backlight 900, and a driving circuit unit.

액정패널(200)에는, 열라인(row line)방향을 따라 연장된 다수의 게이트배선(GL)과, 행라인(column line)방향을 따라 연장된 다수의 데이터배선(DL)이 위치한다. 게이트배선(GL)과 데이터배선(DL)이 서로 교차하여, 매트릭스 형태의 부화소(SP)를 정의한다.In the liquid crystal panel 200, a plurality of gate lines GL extending in a row line direction and a plurality of data lines DL extending in a row line direction are positioned. The gate wiring GL and the data wiring DL cross each other to define a subpixel SP in a matrix form.

액정패널(200)에 구성된 부화소(SP)로서, 예를 들면 레드를 방출하는 R부화소, 그린을 방출하는 G부화소, 블루를 방출하는 B부화소를 포함할 수 있다. 이와 같은 R, G, B 부화소(SP) 각각에는, 대응되는 R, G, B 영상데이터가 입력된다. 여기서, 서로 이웃하는 R, G, B 부화소(SP)는, 하나의 화소(P)를 구성하게 된다. The subpixel SP configured in the liquid crystal panel 200 may include, for example, an R subpixel emitting red, a G subpixel emitting green, and a B subpixel emitting blue. Corresponding R, G, and B video data are input to each of such R, G, and B subpixels SP. Here, the neighboring R, G, and B subpixels SP constitute one pixel P. As shown in FIG.

또한, R, G, B, W 부화소를 포함하거나, 또는 R, G, B, W 부화소를 쿼드(quad) 구조로 배치할 수 있음은 당업자에게 자명하다.In addition, it will be apparent to those skilled in the art that R, G, B, and W subpixels may be included, or R, G, B, and W subpixels may be arranged in a quad structure.

도 2 를 참조하면, 각 부화소(SP)는, 스위칭박막트랜지스터(T)와, 화소전극과, 공통전극과, 액정커패시터(Clc)와, 스토리지커패시터(Cst)를 포함한다.Referring to FIG. 2, each subpixel SP includes a switching thin film transistor T, a pixel electrode, a common electrode, a liquid crystal capacitor Clc, and a storage capacitor Cst.

스위칭박막트랜지스터(T)는 게이트배선(GL)과 데이터배선(DL)의 교차부에 형성된다. 스위칭박막트랜지스터(T)는 화소 전극과 연결되어 있다. 한편, 화소 전극에 대응하여 공통 전극이 형성된다. 화소 전극에 데이터전압이 인가되고, 공통 전극에 공통전압이 인가되면, 이들 사이에 전계가 형성되어 액정을 구동하게 된다. 화소 전극과 공통 전극 그리고 이들 전극 사이에 위치하는 액정은 액정커패시터(Clc)를 구성하게 된다. 한편, 각 부화소(SP)에는, 스토리지 커패시터(Cst)가 더욱 구성되며, 이는 화소 전극에 인가된 데이터전압을 다음 프레임까지 저장하는 역할을 하게 된다.The switching thin film transistor T is formed at an intersection of the gate line GL and the data line DL. The switching thin film transistor T is connected to the pixel electrode. Meanwhile, a common electrode is formed corresponding to the pixel electrode. When a data voltage is applied to the pixel electrode and a common voltage is applied to the common electrode, an electric field is formed therebetween to drive the liquid crystal. The liquid crystal positioned between the pixel electrode, the common electrode, and these electrodes constitutes a liquid crystal capacitor Clc. Meanwhile, each subpixel SP further includes a storage capacitor Cst, which stores a data voltage applied to the pixel electrode until the next frame.

액정패널(200)은, 1인치(inch)안에 표현되는 화소(P)의 수에 따라 해상도가 달라진다. 여기에서, 해상도는 가로 방향의 화소(P)수와 세로 방향의 화소(P) 수의 곱으로 표현할 수 있다.The resolution of the liquid crystal panel 200 varies depending on the number of pixels P expressed in one inch. The resolution may be expressed as the product of the number of pixels P in the horizontal direction and the number of pixels P in the vertical direction.

예를 들면, VGA는 640×480으로, XGA는 1024×768 등으로 표현 될 수 있다. 또한, 초고화질의 액정패널(200)로서, FHD(full high definition)급, UD(ultra definition)급 액정패널(200) 등이 있다. UD급 액정패널(200)은 3840×2160으로, FHD급은 1920×1080으로 표현 될 수 있다. 따라서, UD급 액정패널(200)은, FHD급 액정패널(200)보다 가로 및 세로로 2배수의 화소(P)를 가지게 되는 바, 4배 더 선명한 화질을 제공 할 수 있게 된다.For example, VGA may be represented as 640 × 480, and XGA may be represented as 1024 × 768. In addition, the ultra-high definition liquid crystal panel 200 includes a full high definition (FHD) class and an ultra definition (UD) class liquid crystal panel 200. The UD level liquid crystal panel 200 may be represented as 3840 × 2160, and the FHD level may be represented as 1920 × 1080. Therefore, the UD class liquid crystal panel 200 has two times the pixels P horizontally and vertically than the FHD class liquid crystal panel 200, thereby providing four times clearer picture quality.

여기에서, 보다 명확한 기준을 위하여, 가로 방향 및 세로 방향은 일반적인 액정패널의 구조를 기준으로 한다. 즉, 행라인을 따라서 게이트배선이 위치하고, 열라인을 따라서 데이터배선이 위치한 것을 기준으로 한다. 따라서, 가로 방향은 일반적인 액정패널의 구조로서 게이트배선을 따라서 행라인 방향을 의미하고, 세로 방향은 데이터배선을 따라서 열라인을 의미한다.Here, for clearer standards, the horizontal direction and the vertical direction are based on the structure of a general liquid crystal panel. That is, the gate wiring is positioned along the row line and the data wiring is positioned along the column line. Therefore, the horizontal direction is a structure of a general liquid crystal panel, which means a row line direction along the gate wiring, and the vertical direction means a column line along the data wiring.

즉, 액정패널(200)의 장변 방향을 가로 방향 또는 행라인 방향으로 정의하고, 액정패널(200)의 단변 방향을 세로 방향 또는 열라인 방향으로 정의한다.That is, the long side direction of the liquid crystal panel 200 is defined as the horizontal direction or the row line direction, and the short side direction of the liquid crystal panel 200 is defined as the vertical direction or the column line direction.

본발명의 실시예에서는 설명의 편의를 위하여, FHD급 액정패널(200)을 예로 들어서 설명한다. In the embodiment of the present invention, for convenience of description, it will be described taking the FHD liquid crystal panel 200 as an example.

백라이트(900)는, 빛을 액정패널(200)에 공급하는 역할을 하게 된다. 본발명의 실시예에서는 백라이트(900)로서, 다수의 발광다이오드(Light Emitting Diode : LED)(900)가 사용될 수 있다. 물론, 냉음극관형광램프(Cold Cathode Fluorescent Lamp : CCFL), 외부전극형광램프(External Electrode Fluorescent Lamp : EEFL)도 사용될 수 있음은 당업자에게 자명하다.The backlight 900 serves to supply light to the liquid crystal panel 200. In the embodiment of the present invention, as the backlight 900, a plurality of light emitting diodes (LEDs) 900 may be used. Of course, it will be apparent to those skilled in the art that a cold cathode fluorescent lamp (CCFL) and an external electrode fluorescent lamp (EEFL) may also be used.

구동회로부는, 타이밍제어부(300)와, 게이트구동부(400)와, 데이터구동부(500)와, 감마기준전압발생부(600)와, 전원발생부(700)와, 램프구동부(800)를 포함할 수 있다.The driving circuit unit includes a timing controller 300, a gate driver 400, a data driver 500, a gamma reference voltage generator 600, a power generator 700, and a lamp driver 800. can do.

여기서, 타이밍제어부(300)는, TV시스템이나 비디오카드와 같은 외부시스템으로부터 영상데이터신호(RGB)와, 수직동기신호와 수평동기신호와 클럭신호와 데이터인에이블 등의 제어신호(TCS)를 입력 받게 된다. 한편, 도시하지는 않았지만, 이와 같은 신호들은, 타이밍제어부(300)에 구성된 인터페이스를 통해 입력될 수 있다.Here, the timing controller 300 inputs a video data signal RGB, a vertical synchronization signal, a horizontal synchronization signal, a clock signal, and a data enable signal TCS from an external system such as a TV system or a video card. Will receive. Although not shown, these signals may be input through an interface configured in the timing controller 300.

타이밍제어부(300)는, 입력된 제어신호(TCS)를 사용하여, 게이트구동부(400)를 제어하기 위한 게이트제어신호(GCS)와 데이터구동부(500)를 제어하기 위한 데이터제어신호(DCS)를 생성한다. 또한, 램프구동부(800)를 제어하기 위한 램프제어신호(LCS)를 생성한다. The timing controller 300 uses the input control signal TCS to output a gate control signal GCS for controlling the gate driver 400 and a data control signal DCS for controlling the data driver 500. Create In addition, a lamp control signal LCS is generated to control the lamp driver 800.

게이트제어신호(GCS)는, 게이트스타트펄스(Gate Start Pulse : GSP), 게이트쉬프트클럭(Gate Shift Clock : GSC), 게이트출력인에이블신호(Gate Output Enable : GOE) 등을 포함한다. 데이터제어신호(DCS)는 소스스타트펄스(Source Start Pulse : SSP), 소스쉬프트클럭(Source Shift Clock : SSC), 소스출력인에이블신호(Source Output Enable : SOE), 극성신호(Polarity : POL) 등을 포함할 수 있다. The gate control signal GCS includes a gate start pulse (GSP), a gate shift clock (GSC), a gate output enable signal (GOE), and the like. The data control signal (DCS) includes a source start pulse (SSP), a source shift clock (SSC), a source output enable signal (SOE), and a polarity signal (POL). It may include.

또한, 타이밍제어부(300)는, 외부의 시스템으로부터 영상데이터(RGB)를 전달받고, 이를 액정패널(200)에 맞도록 변환 및 정렬하여 데이터구동부(500)에 전달하게 된다. 이하, 액정패널(200)에 맞도록 변환된 영상데이터신호를 변환데이터신호(DRGB)라고 칭한다.In addition, the timing controller 300 receives image data RGB from an external system, converts and arranges the image data RGB to match the liquid crystal panel 200, and transmits the image data RGB to the data driver 500. Hereinafter, the image data signal converted to fit the liquid crystal panel 200 is referred to as a conversion data signal DRGB.

감마기준전압발생부(600)는, 고전위전압과 저전위전압을 분압하여 다수의 감마기준전압(Vgamma)을 생성하고, 이를 데이터구동부(500)에 공급한다.The gamma reference voltage generator 600 divides the high potential voltage and the low potential voltage to generate a plurality of gamma reference voltages Vgamma, and supplies them to the data driver 500.

데이터구동부(500)는, 타이밍제어부(300)로부터 공급되는 데이터제어신호(DCS)와 변환데이터신호(DRGB)에 응답하여, 데이터전압을 다수의 데이터배선(DL)에 공급하게 된다. 즉, 감마기준전압(Vgamma)을 사용하여, 변환데이터신호(DRGB)에 대응되는 데이터전압을 생성하고, 생성된 데이터전압을 데이터배선(DL)에 출력하게 된다.The data driver 500 supplies the data voltages to the plurality of data wirings DL in response to the data control signal DCS and the conversion data signal DRGB supplied from the timing controller 300. That is, the data voltage corresponding to the converted data signal DRGB is generated using the gamma reference voltage Vgamma, and the generated data voltage is output to the data wiring DL.

게이트구동부(400)는, 타이밍제어부(300)로부터 공급되는 게이트제어신호(GCS)에 응답하여, 다수의 게이트배선(GL)을 순차적으로 스캔한다. 예를 들면, 매 프레임 동안 다수의 게이트배선(GL)을 순차적으로 선택하고, 선택된 게이트배선(GL)에 대해 게이트전압을 출력하게 된다. 게이트전압에 의해, 해당 열라인에 위치하는 스위칭박막트랜지스터(T)는 턴온된다. 한편, 다음 프레임의 스캔시까지는 게이트배선(GL)에 턴오프전압이 공급되어, 스위칭박막트랜지스터(T)는 턴오프 상태를 유지하게 된다.The gate driver 400 sequentially scans the plurality of gate wirings GL in response to the gate control signal GCS supplied from the timing controller 300. For example, a plurality of gate lines GL are sequentially selected during each frame, and a gate voltage is output to the selected gate lines GL. By the gate voltage, the switching thin film transistor T positioned in the corresponding column line is turned on. On the other hand, the turn-off voltage is supplied to the gate line GL until the next frame is scanned, so that the switching thin film transistor T is maintained in the turn-off state.

전원발생부(700)는, 액정표시장치(100)를 구동함에 있어 필요한 다양한 구동전압들을 생성하게 된다. 예를 들면, 타이밍제어부(300)와 데이터구동부(500)와 게이트구동부(400)와 램프구동부(800)에 공급되는 전원전압과, 게이트구동부(400)에 공급되는 게이트하이전압과 게이트로우전압 등을 생성하게 된다. The power generator 700 generates various driving voltages necessary for driving the liquid crystal display 100. For example, the power supply voltage supplied to the timing controller 300, the data driver 500, the gate driver 400, and the lamp driver 800, the gate high voltage and the gate low voltage supplied to the gate driver 400, and the like. Will generate

램프구동부(800)는, 타이밍제어부(300)로부터 공급되는 램프제어신호(LCS)에 응답하여, 블록(block) 단위로 다수의 램프(900) 예를 들면 LED램프(900)들을 순차적으로 구동시키게 된다. The lamp driver 800 sequentially drives the plurality of lamps 900, for example, the LED lamps 900, in block units in response to the lamp control signal LCS supplied from the timing controller 300. do.

이하, 도 3 내지 도 5를 참조하여, 본발명의 실시예에 따른 블록 단위로 다수의 램프(900)들을 순차적으로 구동하는 방법에 대해서 살펴본다.Hereinafter, a method of sequentially driving the plurality of lamps 900 in units of blocks according to an exemplary embodiment of the present invention will be described with reference to FIGS. 3 to 5.

도 3은 본발명의 실시예에 따른 액정표시장치를 개략적으로 도시한 도면이고, 도 4는 본발명의 실시예에 따른 타이밍제어부를 개략적으로 도시한 도면이고, 도 5는 다수의 램프들이 블록 단위로 순차적으로 구동하는 모습을 개략적으로 도시한 도면이다.3 is a schematic view of a liquid crystal display according to an exemplary embodiment of the present invention, FIG. 4 is a schematic view of a timing controller according to an exemplary embodiment of the present invention, and FIG. 5 is a block unit of a plurality of lamps. Is a diagram schematically illustrating a state of sequentially driving the furnace.

먼저, 본발명의 실시예에 따른 액정표시장치(100)의 구성을 상세하게 설명한다.First, the configuration of the liquid crystal display device 100 according to the embodiment of the present invention will be described in detail.

도 3에 도시된 바와 같이, 본발명의 실시예에 따른 액정패널(200)은, 열라인을 따라서 다수의 게이트배선(GL)이 위치하고, 행라인을 따라서 다수의 데이터배선(DL)이 위치한다. As shown in FIG. 3, in the liquid crystal panel 200 according to the exemplary embodiment of the present invention, a plurality of gate lines GL are positioned along column lines, and a plurality of data lines DL are positioned along row lines. .

이에 따라, 하나의 화소(P)를 구성하는 예를 들면 R, G, B 부화소(SP)는 하나의 열라인을 따라서 위치하게 된다(도 1 참조). 즉, 하나의 행라인에는 예를 들면 한가지 종류의 부화소(SP)가 위치하게 된다. As a result, for example, the R, G, and B subpixels SP configuring one pixel P are positioned along one column line (see FIG. 1). That is, for example, one kind of subpixel SP is located in one row line.

구체적으로 예를 들면, 첫번 째 행라인에는 R 부화소(SP)가 위치하게 되고, 두번 째 행라인에는 G 부화소(SP)가 위치하게 되고, 세번 째 행라인에는 B 부화소(SP)가 위치하게 된다.Specifically, for example, the R subpixel SP is positioned in the first row line, the G subpixel SP is positioned in the second row line, and the B subpixel SP is positioned in the third row line. Will be located.

열라인을 따라 게이트배선(GL)이 위치하게 되는 바, 게이트배선(GL)의 연장선에 위치하는 게이트구동부(400)는, 예를 들면 액정패널(200)의 장변(행라인) 방향의 일측에 위치하게 된다.As the gate line GL is positioned along the column line, the gate driver 400 positioned at the extension line of the gate line GL is located at one side of the long side (row line) direction of the liquid crystal panel 200, for example. Will be located.

반면에, 행라인을 따라 데이터배선(DL)이 위치하게 되는 바, 데이터배선(DL)의 연장선에 위치하는 데이터구동부(500)는, 예를 들면 액정패널(200)의 단변(열라인) 방향의 일측에 위치하게 된다.On the other hand, since the data line DL is positioned along the row line, the data driver 500 positioned at the extension line of the data line DL is, for example, in the short side (column line) direction of the liquid crystal panel 200. It is located on one side of.

또한, 본발명의 실시예에서는 가로 방향의 부화소(SP)수와 세로 방향의 부화소(SP)가 일반적인 액정패널과 다르다. In the embodiment of the present invention, the number of subpixels SP in the horizontal direction and the subpixels SP in the vertical direction are different from those of the general liquid crystal panel.

구체적으로 예를 들면, 해상도가 VGA인 경우는 가로 방향의 부화소(P)수는 R, G, B 부화소(SP)로 표현 할 경우, 640×3개이고, 세로 방향의 부화소(SP)수는 480개이다. 이 경우, 본발명의 실시예 따른 액정패널(200)은, 가로 방향의 부화소(SP)수는 640개가 되고, 세로 방향의 부화소(SP)는 R, G, B 부화소(SP)로 표현할 경우, 480×3개가 된다.Specifically, for example, when the resolution is VGA, the number of subpixels P in the horizontal direction is 640 × 3 when expressed in R, G, and B subpixels SP, and the vertical subpixels SP are vertical. The number is 480. In this case, in the liquid crystal panel 200 according to the embodiment of the present invention, the number of subpixels SP in the horizontal direction is 640, and the subpixels SP in the vertical direction are R, G, and B subpixels SP. In the case of expression, it becomes 480 * 3.

이에 따라, 액정패널(200)의 게이트배선(GL)에 순차적으로 인가되는 게이트신호 예를 들면 게이트하이전압은 640개가 되고, 데이터배선(DL)에 인가되는 데이터신호 예를 들면 데이터전압은 480(R, G, B 부화소(SP)인 경우, 480×3)개가 된다.As a result, the number of gate signals that are sequentially applied to the gate wiring GL of the liquid crystal panel 200, for example, the gate high voltage is 640, and the data signal that is applied to the data wiring DL, for example, the data voltage is 480 ( In the case of R, G, and B subpixels SP, the number is 480 × 3).

초고화질의 액정패널(200)인 FHD급 액정패널(200)은, 가로 방향의 부화소(SP)수는 R, G, B 부화소(SP)로 표현할 경우, 1920×3개이고, 세로 방향의 부화소(SP)수는 1080개이다. 이 경우, 본발명의 실시예에 따른 액정패널(200)은, 가로 방향의 부화소(SP)수는 1920개이고, 세로 방향의 부화소(SP)수는 R, G, B 부화소(SP)로 표현할 경우, 1080×3개가 된다. In the FHD liquid crystal panel 200, which is an ultra-high definition liquid crystal panel 200, the number of subpixels SP in the horizontal direction is 1920 × 3 when expressed in terms of R, G, and B subpixels SP. The number of subpixels SP is 1080. In this case, in the liquid crystal panel 200 according to the embodiment of the present invention, the number of subpixels SP in the horizontal direction is 1920, and the number of subpixels SP in the vertical direction is R, G, and B subpixels SP. In terms of, it is 1080 × 3.

이에 따라, 액정패널(200)의 게이트배선(GL)에 순차적으로 인가되는 게이트신호(Gate signal, 도 3) 예를 들면 게이트하이전압은 1920개가 되고, 데이터배선(DL)에 인가되는 데이터신호(Data signal, 도 3) 예를 들면 데이터전압은 1080(R, G, B 부화소(SP)로 표현할 경우, 1080×3)개가 된다.Accordingly, the gate signal (Gate signal, FIG. 3) sequentially applied to the gate wiring GL of the liquid crystal panel 200, for example, has a gate high voltage of 1920, and the data signal applied to the data wiring DL. Data signal, FIG. 3 For example, the data voltage is 1080 (1080 × 3) when expressed in R, G, and B subpixels SP.

본발명의 실시예에 따른 다수의 램프(900)들은 게이트구동부(400)와 예를 들면 동일한 방향에 위치한다. 예를 들면, 게이트구동부(400)가 액정패널(200)의 장변 측에 위치하게 될 경우, 다수의 램프(900)들은 게이트구동부(400)와 동일한 방향인 액정패널(200)의 장변 측을 따라서 일측 또는 양측에 위치하게 된다.A plurality of lamps 900 according to an embodiment of the present invention is located in the same direction as the gate driver 400, for example. For example, when the gate driver 400 is positioned on the long side of the liquid crystal panel 200, the plurality of lamps 900 may be along the long side of the liquid crystal panel 200 in the same direction as the gate driver 400. It is located on one side or both sides.

구체적으로 설명하면, 다수의 램프(900)들은 각 게이트배선(GL)에 인가되는게이트신호(Gate signal)에 동기되어 블록 단위로 순차적으로 구동하게 된다. 이때, 열라인을 따라 게이트배선(GL)이 위치하게 되는 바, 게이트배선(GL)의 연장선에 위치하는 게이트구동부(400)는, 예를 들면 행라인 방향의 일측에 위치하게 되고, 마찬가지로 다수의 램프(900)들도 행라인 방향의 일측 또는 양측에 위치하게 된다.In detail, the plurality of lamps 900 are sequentially driven in block units in synchronization with a gate signal applied to each gate line GL. At this time, since the gate wiring GL is positioned along the column line, the gate driving part 400 positioned at the extension line of the gate wiring GL is located at one side in the row line direction, and thus, The lamps 900 are also located on one side or both sides of the row line direction.

이하, 본발명의 실시예에 따른 타이밍제어부(300)에 대해서 보다 상세하게 설명한다.Hereinafter, the timing controller 300 according to the embodiment of the present invention will be described in more detail.

도 4에 도시된 바와 같이, 본발명의 실시예에 따른 타이밍제어부(300)는, 제어신호생성부(310)와, 데이터변환부(320)를 포함할 수 있다.As shown in FIG. 4, the timing controller 300 according to the embodiment of the present invention may include a control signal generator 310 and a data converter 320.

제어신호생성부(310)는, 입력된 제어신호(TCS)를 사용하여, 게이트구동부(400)를 제어하기 위한 게이트제어신호(GCS)와 데이터구동부(500)를 제어하기 위한 데이터제어신호(DCS)를 생성한다. 또한, 램프구동부(800)를 제어하기 위한 램프제어신호(LCS)를 생성한다. The control signal generator 310 uses the input control signal TCS to control the gate control signal GCS for controlling the gate driver 400 and the data control signal DCS for controlling the data driver 500. ) In addition, a lamp control signal LCS is generated to control the lamp driver 800.

데이터변환부(320)는, 외부의 시스템으로부터 영상데이터(RGB)를 전달받고, 이를 액정패널(200)에 맞도록 변환 및 정렬 된 변환데이터신호(DRGB)를 데이터구동부(500)에 전달하게 된다. The data converter 320 receives the image data RGB from an external system, and transmits the converted data signal DRGB, which is converted and aligned to fit the liquid crystal panel 200, to the data driver 500. .

구체적으로 설명하면, 영상데이터신호(RGB)는 가로 및 세로 방향으로 일반적인 액정패널의 부화소(SP)수를 가지고 타이밍제어부(300)에 입력된다. 즉, 본발명의 실시예에 따른 액정패널(200)의 가로 및 세로 방향의 부화소(SP)수와 다르게 입력된다. 따라서, 다른 수의 부화소(SP)를 가지고 입력되는 영상데이터신호(RGB)를 본발명의 실시예에 따른 액정패널(200)의 부화소(SP)수로 변환해야 한다.In detail, the image data signal RGB is input to the timing controller 300 with the number of subpixels SP of the general liquid crystal panel in the horizontal and vertical directions. That is, the number of subpixels SP in the horizontal and vertical directions of the liquid crystal panel 200 according to the exemplary embodiment of the present invention is input differently. Therefore, the image data signal RGB input with the different number of subpixels SP must be converted into the number of subpixels SP of the liquid crystal panel 200 according to the embodiment of the present invention.

FHD급 해상도를 예를 들어 보다 구체적으로 설명한다. For example, the FHD resolution will be described in more detail.

입력되는 영상데이터신호(RGB)는, 가로 방향의 부화소(SP)수는 R, G, B 부화소(SP)인 경우, 1920×3개이고, 세로 방향의 부화소(SP)수는 1080개이다. 반면에, 본발명의 실시예에 따른 액정패널(200)은, 가로 방향의 부화소(SP)수는 1920개이고, 세로 방향의 부화소(SP)수는 R, G, B 부화소(SP)인 경우, 1080×3개이다.The number of sub-pixels SP in the horizontal direction is 1920x3 when the R, G, and B subpixels SP are input, and the number of subpixels SP in the vertical direction is 1080. . On the other hand, in the liquid crystal panel 200 according to the embodiment of the present invention, the number of subpixels SP in the horizontal direction is 1920, and the number of subpixels SP in the vertical direction is R, G, and B subpixels SP. In the case of, it is 1080 × 3.

따라서, 영상데이터신호(RGB)의 1920×3×1080의 부화소(SP)수를 액정패널(200)의 부화소(SP)수에 맞도록 1080×3×1920으로 변환하여야 한다. Therefore, the number of subpixels SP of 1920 × 3 × 1080 of the image data signal RGB must be converted to 1080 × 3 × 1920 so as to match the number of subpixels SP of the liquid crystal panel 200.

이와 같이 변환된 영상데이터신호(RGB)가 변환데이터신호(DRGB)가 되며, 이를 데이터구동부(500)에 전달하게 된다. The converted image data signal RGB becomes the converted data signal DRGB, which is transmitted to the data driver 500.

영상데이터신호(RGB)를 변환하기 위하여 예를 들면 데이터변환부(320)는, 적어도 하나의 라인 메모리(line memory) 또는 프레임 메모리(frame memory)를 구비 할 수 있다. In order to convert the image data signal RGB, for example, the data converter 320 may include at least one line memory or frame memory.

이하, 본발명의 실시예에 따른 램프구동부(800)의 동작을 상세하게 살펴본다.Hereinafter, the operation of the lamp driver 800 according to the embodiment of the present invention will be described in detail.

본발명의 실시예에서는 에지 타입(edge type) 백라이트(900)를 예로 들어서 설명한다.In the embodiment of the present invention, an edge type backlight 900 will be described as an example.

램프구동부(800)는, 타이밍제어부(900)로부터 공급되는 램프제어신호(LCS)에 응답하여, 다수의 램프(900)들을 블록 단위로 소정의 듀티(duty)비를 갖도록 순차적으로 구동하게 된다.The lamp driver 800 sequentially drives the plurality of lamps 900 to have a predetermined duty ratio in units of blocks in response to the lamp control signal LCS supplied from the timing controller 900.

도 5에 도시된 바와 같이, 다수의 램프(900)들은 블록 단위로 예를 들면 왼쪽에서 오른쪽으로 순차적으로 구동하게 된다. 여기에서, 블록은 다수의 램프(900)들을 행방향으로 적어도 하나 이상의 램프들로 논리적으로 구분한 것이다.As shown in FIG. 5, the plurality of lamps 900 are sequentially driven, for example, from left to right in units of blocks. Here, the block logically divides the plurality of lamps 900 into at least one lamp in the row direction.

이때, 다수의 블록(BL)들은, 예를 들면 한 프레임 동안 제 1 블록(BL1), 제 2 블록(BL2), 제 3 블록(BL3)을 순차적으로 구동하게 된다.In this case, the plurality of blocks BL sequentially drive the first block BL1, the second block BL2, and the third block BL3 for one frame, for example.

구체적으로 예를 들면, 행방향으로 구분된 블록(BL)들은 다수의 게이트배선(GL)에 대응하여 구동될 수 있다. 보다 구체적으로 예를 들면, FHD급 액정패널(200)인 경우, 예를 들면 1920개의 게이트배선(GL)이 구성 될 수 있다. 이 경우, 3개의 블록(BL)으로 구분하여 다수의 램프(900)들을 구동하게 될 경우, 하나의 블록(BL)은 640개의 게이트배선(GL)에 대응하여 구동될 수 있다. 즉, 하나의 블록(BL)을 구성하는 다수의 게이트배선(GL)에 순차적으로 게이트전압이 인가 되고, 해당 게이트배선(GL)에 대응되는 각 부화소(SP)에 예를 들면 데이터전압이 완전히 공급된 후에 해당 블록(BL)의 다수의 램프(900)들이 온 된다. More specifically, for example, the blocks BL divided in the row direction may be driven to correspond to the plurality of gate lines GL. More specifically, for example, in the case of the FHD liquid crystal panel 200, for example, 1920 gate lines GL may be configured. In this case, when the plurality of lamps 900 are driven by being divided into three blocks BL, one block BL may be driven corresponding to 640 gate lines GL. That is, gate voltages are sequentially applied to the plurality of gate lines GL constituting one block BL, and, for example, data voltages are completely applied to each subpixel SP corresponding to the gate line GL. After the supply, the plurality of lamps 900 of the block BL are turned on.

그 후, 다음 블록(BL)의 게이트배선(GL)에 게이트전압이 인가되는 경우에, 해당 블록(BL)의 다수의 램프(900)들은 오프 된다.Thereafter, when a gate voltage is applied to the gate line GL of the next block BL, the plurality of lamps 900 of the block BL are turned off.

여기에서, 3개의 블록(BL)으로 구분 한 것은 본발명의 일예이며, 다수의 블록(BL)으로 구분 될 수 있으며, 또한, 게이트배선(GL)은 각 블록(BL)마다 다르게 대응될 수 있음은 당업자에게 자명하다.Here, the division into three blocks BL is an example of the present invention, and may be divided into a plurality of blocks BL, and the gate wiring GL may correspond differently to each block BL. Is apparent to those skilled in the art.

이와 같이, 블록(BL) 단위로 다수의 램프(900)들을 온-오프 구동하는 바, 별도의 격벽 구비 없이도, 다수의 램프(900)들 간에 확산되는 빛의 영향을 받지 않는 격벽 효과가 있다.As described above, since the plurality of lamps 900 are driven on / off in units of blocks BL, even without a separate partition, there is a partition effect not affected by light diffused between the plurality of lamps 900.

이에 따라, 백라이트(900)가 액정패널(200)의 장변을 따라서 일측 또는 양측에 위치하게 되더라도 백라이트(900)를 스캐닝 방법으로 구동할 수 있다.Accordingly, even when the backlight 900 is located at one side or both sides along the long side of the liquid crystal panel 200, the backlight 900 may be driven by the scanning method.

또한, 백라이트(900)를 스캐닝 방법으로 구동함에 따라, MPRT(motion picture response time) 값을 좋게 하여, 액정패널의 동영상 화질을 향상시키는 효과가 있다.In addition, as the backlight 900 is driven by the scanning method, the motion picture response time (MPRT) value is improved, thereby improving the video quality of the liquid crystal panel.

전술한 본발명의 실시예는 본발명의 일예로서, 본발명의 정신에 포함되는 범위 내에서 자유로운 변형이 가능하다. 따라서, 본발명은, 첨부된 특허청구범위 및 이와 등가되는 범위 내에서의 본발명의 변형을 포함한다.
The embodiments of the present invention described above are examples of the present invention, and modifications can be made freely within the scope of the present invention. Accordingly, the invention includes modifications of the invention within the scope of the appended claims and their equivalents.

100 : 액정표시장치 200 : 액정패널
300 : 타이밍제어부
310 : 제어신호생성부 320 : 데이터변환부
DRGB : 변환데이터신호 100: liquid crystal display device 200: liquid crystal panel
300: timing control unit
310: control signal generation unit 320: data conversion unit
DRGB: Conversion Data Signal

Claims (8)

서로 마주보는 두개의 장변 및 단변을 갖는 액정패널과;
상기 액정패널의 장변을 따라서 연장된 데이터배선과, 단변을 따라서 연장된게이트배선과;
상기 데이터배선과 연결된 데이터구동부와;
상기 게이트배선과 연결된 게이트구동부와;
상기 액정패널의 두 개의 장변 중 적어도 일측에 위치하고 다수의 블록으로구분된 다수의 LED와;
상기 다수의 블록을 순차적으로 구동하는 램프구동부를 포함하는
액정표시장치.
A liquid crystal panel having two long sides and short sides facing each other;
A data line extending along the long side of the liquid crystal panel and a gate line extending along the short side;
A data driver connected to the data line;
A gate driver connected to the gate wiring;
A plurality of LEDs disposed on at least one side of two long sides of the liquid crystal panel and divided into a plurality of blocks;
Ramp driving unit for sequentially driving the plurality of blocks
LCD display device.
제 1 항에 있어서,
상기 블록은, 상기 블록에 대응되는 게이트배선을 구동한 후에 구동되는
액정표시장치.
The method of claim 1,
The block is driven after driving the gate wiring corresponding to the block.
LCD display device.
제 1 항에 있어서,
입력 받은 영상데이터신호를 상기 액정패널의 화소 구조에 부합하도록 변환 및 정렬하여 상기 데이터구동부에 출력하는 타이밍제어부를 더욱 포함하는
액정표시장치.
The method of claim 1,
The apparatus may further include a timing controller configured to convert the input image data signal so as to correspond to the pixel structure of the liquid crystal panel and to output the data driver.
LCD display device.
제 1 항에 있어서,
상기 액정패널에 매트릭스 형태로 배치된 화소는
상기 장변 또는 단변 방향을 따라서 배치된 R, G, B 부화소 또는 R, G, B, W 부화소를 포함하거나,
상기 R, G, B, W 부화소를 포함하는 쿼드 구조로 배치된
액정표시장치.
The method of claim 1,
Pixels arranged in a matrix form on the liquid crystal panel
It includes R, G, B subpixels or R, G, B, W subpixels disposed along the long side or short side direction,
Disposed in a quad structure including the R, G, B, and W subpixels
LCD display device.
액정패널과, 상기 액정패널의 두 개의 장변 중 적어도 일측에 위치하고 다수의 블록으로 구분된 다수의 LED를 포함하는 액정표시장치의 구동방법에 있어서,
상기 블록을 순차적으로 구동하는 단계를 포함하는
액정표시장치 구동방법.
In a driving method of a liquid crystal display device comprising a liquid crystal panel and a plurality of LEDs located on at least one side of two long sides of the liquid crystal panel and divided into a plurality of blocks.
Driving the blocks sequentially
Liquid crystal display driving method.
제 5 항에 있어서,
상기 블록을 순차적으로 구동하는 단계는,
상기 액정패널의 장변 방향을 따라 게이트배선을 순차적으로 구동하는 단계와;
상기 게이트배선의 구동에 대응하여, 상기 블록을 순차적으로 구동하는 단계를 포함하는
액정표시장치 구동방법.
The method of claim 5, wherein
Driving the blocks sequentially
Sequentially driving gate wirings along a long side direction of the liquid crystal panel;
In response to driving of the gate wirings, sequentially driving the blocks;
Liquid crystal display driving method.
제 5 항에 있어서,
입력 받은 영상데이터신호를 상기 액정패널의 화소 구조에 부합하도록 변환 및 정렬하여 데이터구동부에 출력하는 타이밍제어부를 더욱 포함하는
액정표시장치 구동방법.
The method of claim 5, wherein
The apparatus may further include a timing controller configured to convert the input image data signal so as to correspond to the pixel structure of the liquid crystal panel and output the data signal to the data driver.
Liquid crystal display driving method.
제 5 항에 있어서,
상기 액정패널에 매트릭스 형태로 배치된 화소는
상기 장변 또는 단변 방향을 따라서 배치된 R, G, B 부화소 또는 R, G, B, W 부화소를 포함하거나,
상기 R, G, B, W 부화소를 포함하는 쿼드 구조로 배치된
액정표시장치 구동방법.The method of claim 5, wherein
Pixels arranged in a matrix form on the liquid crystal panel
It includes R, G, B subpixels or R, G, B, W subpixels disposed along the long side or short side direction,
Disposed in a quad structure including the R, G, B, and W subpixels
Liquid crystal display driving method.
KR1020100084415A 2010-08-30 2010-08-30 liquid crystal display device and method of driving the same KR101728782B1 (en)

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