KR20010047064A - Printed circuit board of LCD - Google Patents
Printed circuit board of LCD Download PDFInfo
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- KR20010047064A KR20010047064A KR1019990051107A KR19990051107A KR20010047064A KR 20010047064 A KR20010047064 A KR 20010047064A KR 1019990051107 A KR1019990051107 A KR 1019990051107A KR 19990051107 A KR19990051107 A KR 19990051107A KR 20010047064 A KR20010047064 A KR 20010047064A
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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
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13452—Conductors connecting driver circuitry and terminals of panels
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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
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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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
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13458—Terminal pads
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
Description
본 발명은 액정표시장치의 인쇄회로기판에 관한 것으로, 더욱 상세하게는 인쇄회로기판에 실장된 구동소자들의 노이즈를 제거하기 위해서 용량이 서로 다른 2개 이상의 캐패시터를 병렬로 연결하여 패키징하여 하나의 캐패시터 소자를 형성하여 구동소자들 주위에 실장함으로써, 인쇄회로기판의 실장면적을 증대시키고, 캐패시터 소자들과 구동소자들 간의 간격을 줄여 원하는 대역의 노이즈를 효과적으로 제거하는 액정표시장치의 인쇄회로기판에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board of a liquid crystal display device, and more particularly, to remove noise of driving devices mounted on a printed circuit board, by connecting two or more capacitors having different capacities in parallel and packaging one capacitor. A printed circuit board of a liquid crystal display device which effectively removes noise in a desired band by forming an element and mounting it around the drive elements, thereby increasing the mounting area of the printed circuit board and reducing the distance between the capacitor elements and the drive elements. will be.
일반적으로 사용되고 있는 표시장치들 중의 하나인 음극선관(CRT;Cathode Ray Tube)은 텔레비전을 비롯해서 계측기기, 정보 단말기기 등의 모니터에 주로 이용되고 있으나, 음극선관의 자체 무게와 크기로 인하여 전자 제품의 소형화, 경량화의 요구에 적극 대응할 수 없었다.Cathode ray tube (CRT), which is one of the commonly used display devices, is mainly used for monitors such as televisions, measuring devices, information terminal devices, etc., but due to its own weight and size, It could not actively respond to the demand for miniaturization and weight reduction.
이러한 음극선관을 대체하기 위해서 소형, 경량화 및 저소비전력 등과 같은 장점을 가지고 있으며, LCD 패널의 내부에 주입된 액정의 전기, 광학적 성질을 이용하여 정보를 표시하는 액정표시장치가 활발하게 개발되어 왔고, 최근에는 평판 표시장치로서의 역할을 충분히 수행할 수 있을 정도로 기능이 개선되어 여러 시스템의 모니터뿐만 아니라 텔레비전의 브라운관으로도 사용되고 있다.In order to replace the cathode ray tube, it has advantages such as small size, light weight, low power consumption, and the like, and a liquid crystal display device that displays information by using the electrical and optical properties of the liquid crystal injected into the LCD panel has been actively developed. In recent years, the function has been improved enough to perform a role as a flat panel display device, and is used as a CRT of a television as well as a monitor of various systems.
이러한, 액정표시장치는 크게 액정의 전기, 광학적 성질에 의해 정보를 표시하는 액정패널과, 빛을 발산하여 액정패널로 안내하며 액정패널을 지지하는 백라이트 어셈블리 및 액정패널과 전기적으로 연결되어 액정패널을 구동시키는 구동회로 파트로 구성된다.Such a liquid crystal display device is largely connected to a liquid crystal panel that displays information by the electrical and optical properties of the liquid crystal, and a backlight assembly and liquid crystal panel that guides the liquid crystal panel by emitting light to guide the liquid crystal panel. It consists of a drive circuit part to drive.
액정패널을 구동시키는 구동회로 파트는 액정패널의 장변에 테이프 캐리어 패키지에 의해 연결되어 액정패널에 화상신호, 클럭신호, 동기신호들 및 계조전압들을 인가하는 소스 인쇄회로기판과, 액정패널의 단변에 테이프 캐리어 패키지에 의해 연결되어 박막트랜지스터를 온/오프시키는 게이트 온/오프 전압을 인가하는 게이트 인쇄회로기판과, 소스 인쇄회로기판과 전기적으로 연결되어 이들 신호를 제어하는 컨트롤 보드로 구성된다.The driving circuit part for driving the liquid crystal panel is connected to a long side of the liquid crystal panel by a tape carrier package, and a source printed circuit board for applying an image signal, a clock signal, synchronization signals, and gradation voltages to the liquid crystal panel, and a short side of the liquid crystal panel. A gate printed circuit board connected by a tape carrier package to apply a gate on / off voltage to turn on / off the thin film transistor, and a control board electrically connected to the source printed circuit board to control these signals.
도 1에 도시된 바와 같이 소스 및 게이트 인쇄회로기판과 컨트롤 보드에는 각종신호를 발생시키는 구동소자들(10)과 저항, 캐패시터 및 트랜지스터와 같은 여러가지 부품들(미도시)이 실장되는데, 여기서, 신호선(40)을 따라 전송되는 각종 전기적 신호들이 저항성분이나 여러 외부환경에 의해 발생된 노이즈를 제거하는 캐패시터 소자들(20,30)은 구동소자들의 주변에 실장된다.As shown in FIG. 1, the source and gate printed circuit boards and the control board are mounted with drive elements 10 for generating various signals and various components such as resistors, capacitors, and transistors (not shown). Capacitor elements 20 and 30, in which various electrical signals transmitted along 40 are removed by a resistance component or various external environments, are mounted around driving elements.
캐패시터 소자들(20,30)은 특히 노이즈에 민감한 구동소자들()의 전원단이나 그라운드 단에 많이 실장되는데, 도 1에 도시된 바와 같이 전원단이나 그라운드단에는 각 구동소자들(10)로 인가되는 전기적인 신호를 보다 안정화시키기 위해서 용량이 서로 다른 캐패시터 소자(20)를 쌍으로 실장한다. 예를 들어 14.1 인치인 XGA급 액정표시장치에서는 0.001㎌와 0.1㎌, 0.01㎌와 0.1㎌의 용량을 갖는 규격화된 캐패시터 소자를 쌍으로 실장한 바이 패스 캐패시터(by-pass capacitor)나 디커플링 캐패시터(decoupling capacitor)를 사용하고 있다.Capacitor elements 20 and 30 are particularly mounted on the power terminal or ground terminal of the noise-sensitive driving devices (), and as shown in FIG. 1, each of the driving devices 10 is connected to the power terminal or ground terminal. In order to stabilize the applied electric signal more, capacitor elements 20 having different capacitances are mounted in pairs. For example, a 14.1 inch XGA class liquid crystal display device has bypass capacitors or decoupling capacitors mounted in pairs of standardized capacitor elements with capacities of 0.001 ㎌, 0.1 ㎌, 0.01 ㎌ and 0.1 ㎌. capacitor).
이러한, 바이패스 캐패시터나 디커플링 캐패시터의 경우 반드시 용량이 서로 다른 캐패시터 소자들이 쌍을 이뤄 실장되어야 하며, 노이즈 제거 효과를 증대시키기 위해서는 전원단 및 그라운드단과 최대한 가깝게 캐패시터 소자를 위치시켜야 한다.In the case of the bypass capacitor or the decoupling capacitor, capacitor elements having different capacities must be mounted in pairs, and the capacitor elements should be positioned as close as possible to the power supply and ground terminals in order to increase the noise canceling effect.
그러나, 구동회로부에서 타이밍 컨트롤러나, 저전압 차동신호를 원래의 상태의 신호로 복원시키는 LVDS 수신부의 경우 전원단이 많고 노이즈에 민감하며, 전기적 신호의 안정화를 위해서 타이밍 컨트롤로 및 LVDS 수신부와 다른 부품들을 연결시키는 신호선들의 길이가 짧으므로, 타이밍 컨트롤러와 LVDS 수신부 주위의 공간이 협소하다.However, the timing controller or LVDS receiver for restoring the low voltage differential signal to the original state in the driver circuit part has many power stages and is sensitive to noise, and the timing control and the LVDS receiver and other parts are used to stabilize the electrical signal. Since the length of the signal lines to be connected is short, the space around the timing controller and the LVDS receiver is narrow.
이와 같이 협소한 공간에 많은 개수의 캐패시터 소자를 실장해야 하기 때문에 구동소자들 주변에 캐패시터 소자들의 실장 공간을 확보하는데 많은 어려움이 있어 인쇄회로기판의 설계가 어려운 문제점이 있다.Since a large number of capacitor elements must be mounted in such a narrow space, there are many difficulties in securing the mounting space of the capacitor elements around the driving elements, which makes it difficult to design a printed circuit board.
또한, 노이즈에 민감한 구동소자들의 전원단과 그라운드단 주위에 용량이 서로 다른 2개의 캐패시터 소자를 설치해야 하기 때문에 신호선이 길어져 노이즈가 증가되는 문제점이 있다.In addition, since two capacitor elements having different capacities must be installed around the power supply terminal and the ground terminal of the noise-sensitive driving devices, the signal line is long, thereby increasing noise.
미설명부호 1은 인쇄회로기판이다.Reference numeral 1 is a printed circuit board.
따라서, 본 발명의 목적은 상기와 같은 문제점을 감안하여 안출된 것으로써, 캐패시터 소자의 개수를 줄여 인쇄회로기판의 실장면적을 증대시키고 인쇄회로기판의 설계를 단순화시키는데 있다.Accordingly, an object of the present invention is to conceive in view of the above problems, to reduce the number of capacitor elements to increase the mounting area of the printed circuit board and to simplify the design of the printed circuit board.
본 발명의 다른 목적은 신호선의 저항 성분이나 인덕턴스 성분을 줄여 원한는 대역의 노이즈를 효과적으로 제거하는데 있다.Another object of the present invention is to reduce the resistance component or inductance component of a signal line to effectively remove noise in a desired band.
본 발명의 또 다른 목적은 다음의 상세한 설명과 첨부된 도면으로부터 보다 명확해 질 것이다.Still other objects of the present invention will become more apparent from the following detailed description and the accompanying drawings.
도 1은 종래의 액정표시장치의 인쇄회로기판을 나타낸 평면도.1 is a plan view showing a printed circuit board of a conventional liquid crystal display device.
도 2는 본 발명에 의한 액정표시장치의 인쇄회로기판을 나타낸 평면도.2 is a plan view showing a printed circuit board of the liquid crystal display according to the present invention.
도 3은 본 발명에 의한 캐패시터 소자의 내부 구조를 나타낸 개념도.3 is a conceptual diagram showing the internal structure of a capacitor element according to the present invention.
이와 같은 목적을 달성하기 위해서 본 발명은 구동소자들의 주위에 실장되어 구동소자로 인가되는 신호의 노이즈를 제거하는 캐패시터 소자의 내부에는 용량이 서로 다른 2개 이상의 캐패시터가 병렬로 연결된다.In order to achieve the above object, the present invention includes two or more capacitors having different capacitances connected in parallel in a capacitor element mounted around the driving elements to remove noise of a signal applied to the driving elements.
바람직하게, 용량이 서로 다른 2개 이상의 캐패시터가 내장된 캐패시터 소자들은 노이즈에 취약한 구동소자들의 전원단과 그라운드단에 각각 실장된다.Preferably, capacitor elements having two or more capacitors having different capacities are mounted on power and ground terminals of the driving devices, which are vulnerable to noise.
이하, 본 발명에 의한 액정표시장치의 인쇄회로기판을 첨부된 도면 도 2내지 도 3을 참조하여 설명하면 다음과 같다.Hereinafter, a printed circuit board of a liquid crystal display according to the present invention will be described with reference to FIGS. 2 to 3.
액정의 전기, 광학적 특성에 의해 정보를 표시하는 액정패널(도시 안됨)에 각종 신호들를 인가하는 인쇄회로기판(100)에는 도 2에 도시된 바와 같이 각종 신호를 만들어 액정패널을 구동시키는 구동소자들(110)과, 구동소자들(110) 주변에 설치되는 각종 부품들(예를 들어 저항, 트랜지스터)(도시 안됨)과, 구동소자들(110)의 단자와 신호선(140) 사이에 실장되어 구동소자들(110)로 인가되는 각종 신호의 노이즈를 제거하는 캐패시터 소자들(120,130)로 구성되며, 신호선들(140)은 각종 신호들을 구동소자(110), 각종 부품, 캐패시터 소자(120,130) 및 액정패널로 전달하는 역할을 한다.The printed circuit board 100 that applies various signals to a liquid crystal panel (not shown) that displays information by electric and optical characteristics of the liquid crystal has driving elements for driving the liquid crystal panel by generating various signals as shown in FIG. 2. 110, various components (for example, resistors and transistors) (not shown) installed around the driving elements 110, and are mounted between the terminals of the driving elements 110 and the signal line 140 to be driven. Capacitor elements 120 and 130 remove noise of various signals applied to the elements 110. The signal lines 140 transmit various signals to the driving element 110, various components, capacitor elements 120 and 130, and liquid crystals. It serves to convey to the panel.
이하, 본 발명과 직접적으로 관련이 있는 캐패시터 소자에 대해서만 설명하기로 한다.Hereinafter, only capacitor elements directly related to the present invention will be described.
도 2에 도시된 바와 같이 구동소자들(110)의 단자들에 연결된 각각의 신호선들(140)에는 캐패시터 소자들(120,130)이 한개씩 실장되는데, 구동소자들(110)의 전원단과 그라운드단은 노이즈에 취약하기 때문에 구동소자들(110)의 전원단과 그라운드단에는 도 3에 도시된 바와 같이 2개 이상의 캐패시터들(122,124)이 상호 연결되어 내장된 캐패시터 소자(120)를 실장하여야 한다.As shown in FIG. 2, capacitor elements 120 and 130 are mounted on each of the signal lines 140 connected to the terminals of the driving elements 110, and the power and ground terminals of the driving elements 110 are noisy. Since it is vulnerable to the power supply terminal and the ground terminal of the drive element 110, as shown in FIG. 3, two or more capacitors 122 and 124 are connected to each other to mount the embedded capacitor element 120.
즉, 소정의 기판에 용량이 서로 다른 캐패시터(122,124)를 복수개, 예를 들어 2개 형성하고, 용량이 서로 다른 한쌍의 캐패시터(122,124)를 병렬로 연결시킨 후에 상호 연결된 캐패시터들(122,124)을 외부환경으로부터 보호하기 위해 2개의 캐패시터(122,124)를 패키징하여 하나의 캐패시터 소자(120)를 형성한다. 만약, 2개의 캐패시터(122,124)가 내장된 캐패시터 소자(120)를 14.1인치의 XGA급 액정표시장치의 인쇄회로기판(100)에 실장할 경우 캐패시터 소자(120)에 내장된 2개의 캐패시터(122,124) 중 어느 하나는 캐패시터(122)는 0.001㎌의 용량을 갖거나 0.01㎌의 용량을 가지며, 나머지 하나의 캐패시터(124)는 0.1㎌의 용량을 갖는다.That is, a plurality of capacitors 122 and 124 having different capacities, for example, two are formed on a predetermined substrate, and a pair of capacitors 122 and 124 having different capacities are connected in parallel, and then the interconnected capacitors 122 and 124 are externally connected. To protect from the environment, two capacitors 122 and 124 are packaged to form one capacitor element 120. If the capacitor element 120 including the two capacitors 122 and 124 is mounted on the printed circuit board 100 of the 14.1 inch XGA class liquid crystal display device, the two capacitors 122 and 124 embedded in the capacitor element 120 may be used. Any one of the capacitors 122 has a capacity of 0.001 ㎌ or 0.01 ㎌, and the other capacitor 124 has a capacity of 0.1 ㎌.
이와 같이 2개의 캐패시터(122,124)가 내장된 캐패시터 소자(120)를 도 2에 도시된 바와 같이 구동소자(110)의 전원단과 그라운드단에 실장하면, 구동소자(110)와 구동소자(110), 구동소자(110)와 부품들 사이의 공간이 협소하더라도 각 신호선들(140)에 하나의 캐패시터 소자(120)만 실장하면 되기 때문에 종래에 비해 인쇄회로기판(100)의 설계가 용이하다.As described above, when the capacitor device 120 having the two capacitors 122 and 124 is mounted on the power supply terminal and the ground terminal of the driving device 110 as shown in FIG. 2, the driving device 110 and the driving device 110, Even if the space between the driving element 110 and the components is small, only one capacitor element 120 needs to be mounted on each signal line 140, so that the design of the printed circuit board 100 is easier than in the related art.
또한, 구동소자(110)와 구동소자(110), 또는 부품과 구동소자들(110) 사이에 신호를 전송하기 위해서 형성되는 신호선들(140)에 하나의 캐패시터 소자(120)만 실장되기 때문에 신호선들(140)의 길이가 짧아지므로, 신호선들(140)의 저항성분 및 인덕턴스 성분이 줄어들어 원하는 대역의 노이즈가 제거된다.In addition, since only one capacitor element 120 is mounted on the signal lines 140 formed to transmit a signal between the driving element 110 and the driving element 110, or between the component and the driving elements 110, the signal line is a signal line. Since the length of the field 140 is shortened, the resistance component and the inductance component of the signal lines 140 are reduced to remove noise of a desired band.
상술한 바와 같이 본 발명은 서로 다른 용량을 갖는 적어도 2개 이상의 캐패시터를 한꺼번에 패키징하여 하나의 캐패시터 소자를 형성하여 구동소자들 주변, 특히 전원단자와 그라운드단자에 실장함으로써, 인쇄회로기판의 실장면적이 증대시킬 수 있어 인쇄회로기판의 설계가 용이한 이점이 있다.As described above, in the present invention, at least two or more capacitors having different capacities are packaged together to form one capacitor element, and thus the mounting area of the printed circuit board is formed by mounting the capacitor element around the driving elements, in particular, the power terminal and the ground terminal. There is an advantage that the design of the printed circuit board can be easily increased.
또한, 하나의 신호선에 2개 이상의 캐패시터가 내장된 하나의 캐패시터 소자만를 실장하기 때문에 각 신호선들의 길이를 짧게 형성할 수 있어 신호선의 저항성분 및 인턱턴스 성분이 감소되어 원하는 대역의 노이즈를 제거할 수 있으므로 제품의 특성을 향상시킬 수 있는 효과가 있다.In addition, since only one capacitor element having two or more capacitors is mounted on one signal line, the length of each signal line can be shortened, so that the resistance component and the resistance component of the signal line can be reduced to remove noise in a desired band. Therefore, there is an effect that can improve the characteristics of the product.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990051107A KR100676235B1 (en) | 1999-11-17 | 1999-11-17 | Printed circuit board of LCD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990051107A KR100676235B1 (en) | 1999-11-17 | 1999-11-17 | Printed circuit board of LCD |
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| Publication Number | Publication Date |
|---|---|
| KR20010047064A true KR20010047064A (en) | 2001-06-15 |
| KR100676235B1 KR100676235B1 (en) | 2007-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1019990051107A KR100676235B1 (en) | 1999-11-17 | 1999-11-17 | Printed circuit board of LCD |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100759980B1 (en) * | 2001-09-25 | 2007-09-18 | 삼성전자주식회사 | liquid crystal device |
| KR100802458B1 (en) * | 2005-03-24 | 2008-02-13 | 미쓰비시덴키 가부시키가이샤 | Display device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05142562A (en) * | 1991-11-26 | 1993-06-11 | Hitachi Ltd | Liquid crystal display device |
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1999
- 1999-11-17 KR KR1019990051107A patent/KR100676235B1/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100759980B1 (en) * | 2001-09-25 | 2007-09-18 | 삼성전자주식회사 | liquid crystal device |
| KR100802458B1 (en) * | 2005-03-24 | 2008-02-13 | 미쓰비시덴키 가부시키가이샤 | Display device |
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| Publication number | Publication date |
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| KR100676235B1 (en) | 2007-01-30 |
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