KR0172875B1 - Lcd light valve with thermal diffusing function - Google Patents
Lcd light valve with thermal diffusing function Download PDFInfo
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- KR0172875B1 KR0172875B1 KR1019950030441A KR19950030441A KR0172875B1 KR 0172875 B1 KR0172875 B1 KR 0172875B1 KR 1019950030441 A KR1019950030441 A KR 1019950030441A KR 19950030441 A KR19950030441 A KR 19950030441A KR 0172875 B1 KR0172875 B1 KR 0172875B1
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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
- G02F1/133382—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
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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
- G02F1/133528—Polarisers
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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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/139—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
- G02F1/1396—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell
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- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal (AREA)
- Projection Apparatus (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
본 발명은 LCD(Liquid Crystal Display)라이트 밸브(Light Valve)에 관한 것으로, 특히 후면 광원 램프(Back Light Lamp)에 의해 LCD 라이트 밸브에 발생하는 열을 자체적으로 방출함으로써 열로 열화된 특성을 향상시켜 프로젝션 TV의 화질을 향상시키도록 한 열방출기능을 갖는 LCD 라이트 밸브에 관한 것이다.The present invention relates to an LCD (Liquid Crystal Display) light valve (Light Valve), in particular by the self-discharge of heat generated in the LCD light valve by the back light lamp (Back Light Lamp) to improve the heat deterioration characteristics projection The present invention relates to an LCD light valve having a heat dissipation function for improving the image quality of a TV.
상기와 같은 목적을 달성하기 위한 본 발명은 다중 방향으로 진동하는 자연광원을 단일의 일방향으로 진동하는 광원만을 선택 투과시키는 제1편광판과, 상기 제1편광판의 일방향성 광원을 그대로 투과시키는 제1투과수단과, 상기 제1투과수단에 의해 투과된 광원으로 화상을 디스플레이하는 화상배열수단과, 상기 화상배열수단의 화상을 뒤틀림 또는 수직배향하여 투과시키는 액정수단과, 상기 액정수단의 배향된 화상을 그대로 투과시키며 액정의 유출을 막는 제2투과수단과, 상기 제2투과수단에서 발생하는 일방향성 광원의 화상을 90°회전된 편광으로 투과시키는 제2편광판과, 상기 제1투과수단과 제2투과수단 내면에 상기 액정수단이 동작하도록 전원을 공급하는 투명전극과, 상기 제1편광판과 제1투과수단사이에 화학증착방법으로 합착되고 후면 광원에 의해 상기 제1, 제2투과수단, 화상배열수단, 액정수단, 제1, 제2 편광판과 전극수단에서 발생하는 과도한 열을 방열수단으로 방출하는 열방출수단으로 이루어짐을 특징으로 한다.The present invention for achieving the above object is a first polarizing plate for selectively transmitting only a light source vibrating in a single one direction of the natural light source vibrating in multiple directions, and a first transmission to transmit the unidirectional light source of the first polarizing plate as it is Means, image arranging means for displaying an image with a light source transmitted by said first transmitting means, liquid crystal means for transmitting the image of said image arranging means by twisting or vertically aligning, and an oriented image of said liquid crystal means as it is Second transmission means for transmitting and preventing the outflow of liquid crystal, a second polarizing plate for transmitting the image of the unidirectional light source generated by the second transmission means with polarized light rotated by 90 °, the first transmission means and the second transmission means The transparent electrode for supplying power to the liquid crystal means to operate on the inner surface, and the first polarizing plate and the first transmission means is bonded by a chemical vapor deposition method and the back By the one characterized by the second constituted by any one, a second transmission means, the image array means, the liquid crystal means, first, the heat release means for releasing excess heat generated by the second polarizing plate and the electrode means to heat sink means.
Description
제1도는 일반적인 직시형 액정 TV를 나타낸 개략도.1 is a schematic view showing a general direct view liquid crystal TV.
제2도는 일반적인 투사형 액정 TV를 나타낸 개략도.2 is a schematic view showing a general projection type liquid crystal TV.
제3도는 종래의 일반적인 LCD 라이트밸브의 단면도.3 is a cross-sectional view of a conventional general LCD light valve.
제4도는 종래의 일반적인 픽셀 어레이층의 판넬 개략도.4 is a panel schematic diagram of a conventional general pixel array layer.
제5도는 종래의 일반적인 픽셀 어레이층을 나타낸 평면도.5 is a plan view showing a conventional general pixel array layer.
제6도는 종래의 일반적인 LCD 라이트 밸브의 동작을 나타낸 사시도.6 is a perspective view showing the operation of a conventional general LCD light valve.
제7도는 본 발명의 열방출기능을 갖는 LCD 라이트 밸브의 단면도.7 is a cross-sectional view of the LCD light valve having a heat dissipation function of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
11 : 제1편광판 12 : 하판석영층11: first polarizing plate 12: lower plate quartz layer
13 : 픽셀어레이층 14 : 액정층13 pixel array layer 14 liquid crystal layer
15 : 상판석영층 16 : 제2편광판15: top plate quartz layer 16: the second polarizing plate
17 : 투명전극 20 : DLC(Dimond Like Carbon)층17: transparent electrode 20: DLC (Dimond Like Carbon) layer
본 발명은 LCD(Liquid Crystal Display)라이트 밸브(Light Valve)에 관한 것으로, 특히 후면 광원 램프(Back Light Lamp)에 의해 LCD 라이트 밸브에 발생하는 열을 자체적으로 방출함으로써 열로 열화된 특성을 향상시켜 프로젝션 TV의 화질을 향상시키도록 한 열방출기능을 갖는 LCD 라이트 밸브에 관한 것이다.The present invention relates to an LCD (Liquid Crystal Display) light valve (Light Valve), in particular by the self-discharge of heat generated in the LCD light valve by the back light lamp (Back Light Lamp) to improve the heat deterioration characteristics projection The present invention relates to an LCD light valve having a heat dissipation function for improving the image quality of a TV.
일반적으로 액정 TV는 크게 직시형과 투사형으로 나누어진다.Generally, liquid crystal TVs are divided into direct view type and projection type.
전자는 제1도에 도시한 바와 같이 유리기판위에 형성된 TFT 어레이(array) 글라스 기판(glass sub)(a)과 칼라 필터 글라스 판넬(Color Filter Glass Panel)(b)를 합착하여 그 사이에 액정을 주입한 후 봉입하고, 이 양면에 편광판을 장착하여 구동 IC와 본딩(Bondine)하면 LCD 모듈장치(d)가 구성된다.The former combines a TFT array glass sub (a) and a color filter glass panel (b) formed on the glass substrate as shown in FIG. 1 to form a liquid crystal therebetween. After injecting and encapsulating, the polarizing plate is mounted on both surfaces thereof and bonded with the driving IC to bond the LCD module d.
상기 LCD 모듈장치에 후면광(Back Light)(e)를 조사하여 액정 이미지(image) 화상이 디스플레이되도록 한다.A back light (e) is irradiated to the LCD module device so that a liquid crystal image image is displayed.
상기와 같은 액정 TV는 픽셀(pixel)의 스위칭 소자가 비정질 실리콘 TFT로 구성되는데 비정질 실리콘 TFT의 전계 이동도(Field Effect Mobility)가 낮아서 동일 원판에 구동 IC를 설계할 수 없다.In the liquid crystal TV as described above, the switching element of the pixel is composed of an amorphous silicon TFT, but the field IC of the amorphous silicon TFT has low field effect mobility, so that the driving IC cannot be designed on the same disc.
그래서 복수개의 픽셀로 구성된 이미지 화상의 화면 크기가 실제 시청자가 시청하는 시야크기와 1:1을 이룬다.Therefore, the screen size of the image image composed of a plurality of pixels is 1: 1 with the viewing size that the actual viewer views.
후자는 제2도에 도시한 바와 같이 복수개의 색분리 필터(1)가 200만 럭스(Lux)내외의 조도를 갖는 후면광의 광원을 R, G, B(Red, Green, Blue)로 분리하면서 R광원과 B광원을 별도의 반사경(2)으로 조사방향을 바꾸고 상기 분리된 R, G, B 광원은 각각의 LCD 라이트 밸브(3)에 의해 각각 R, G, B 이미지 화상으로 디스플레이되어 이들 각각의 이미지 화상을 복수개의 색합성필터(4)로 한 화면이 되도록 한 후 투영렌즈(Projection Lense)(5)를 통해 스크린(6)에 투사되도록 적당한 화면 크기로 확대하는 구성으로 이루어진다.In the latter case, as shown in FIG. 2, the plurality of color separation filters 1 separate R, G, and B (red, green, blue) light sources of back light having illuminance of about 2 million lux. The irradiation direction of the light source and the B light source are changed to separate reflectors 2, and the separated R, G, and B light sources are respectively displayed as R, G, and B image images by respective LCD light valves 3, respectively. The image image is made to be one screen by the plurality of color composition filters 4 and then enlarged to an appropriate screen size so as to be projected onto the screen 6 through the projection lens 5.
상기와 같은 액정 투영 TV는 200만 럭스내외의 조도를 갖는 후면광원 램프의 조사에 의해 LCD 라이트 밸브의 액정 동작온도가 상승되어 LCD 라이트 밸브가 열화되고 화질이 떨어진다.In the liquid crystal projection TV as described above, the liquid crystal operating temperature of the LCD light valve is increased by irradiation of a rear light source lamp having illuminance of about 2 million lux.
최근에는 상기와 같이 상승하는 온도를 낮추기 위해 주로 송풍팬(Fan)을 설치하여 사용한다.Recently, in order to lower the rising temperature as described above, it is mainly used by installing a fan (Fan).
이하 첨부된 도면을 참조하여 종래의 일반적인 LCD 라이트 밸브를 설명하면 다음과 같다.Hereinafter, a conventional LCD light valve will be described with reference to the accompanying drawings.
제3도는 종래의 일반적인 LCD 라이트밸브의 단면도이고, 제4도는 종래의 일반적인 픽셀 어레이층의 판넬 개략도이고, 제5도는 종래의 일반적인 픽셀 어레이를 나타낸 평면도이고, 제6도는 종래의 일반적인 LCD 라이트 밸브의 동작을 나타낸 사시도이다.3 is a cross-sectional view of a conventional general LCD light valve, FIG. 4 is a schematic view of a panel of a conventional general pixel array layer, FIG. 5 is a plan view showing a conventional general pixel array, and FIG. 6 is a plan view of a conventional general LCD light valve. A perspective view showing the operation.
종래의 일반적인 LCD라이트 밸브는 제3도와 같이 반사경 또는 색분리필터로부터 전달된 다중방향으로 진동하는 광원을 받아 단일의 일정방향으로 진동하는 광원만을 투과시키는 제1편광판(11)과, 상기 제1편광판(11) 상부에 합착되어 제1편광판(11)의 광원을 그대로 투과시키는 하판 석영층(12)과, 상기 하판 석영층(12) 상부에 합착되고 상기 투과된 광원을 받아 화상을 만들어 내는 픽셀 어레이층(13)과, 상기 픽셀 어레이층(13) 상부에 합착되고, 픽셀 어레이층(13)의 화상을 뒤틀림 또는 수직 배향특성에 따라 배향시키는 액정층(14)과, 상기 액정층(14) 상부에 합착되고, 액정층(14)에서 배향된 화상을 투과시키는 상판 석영층(15)과, 상기 상판 석영층(15) 상부에 합착되고, 90°회전편광으로 상기 화상을 투과시키는 제2편광판(16)과, 상기 액정층(14)이 특정 배향방향을 이루도록 전원을 공급하고, 액정층(14)을 둘러싼 상, 하판 석영층(12, 15) 내면에 합착되는 투명전극(17)으로 이루어진다.Conventional LCD light valves include a first polarizing plate 11 which receives a light source vibrating in multiple directions transmitted from a reflector or a color separation filter as shown in FIG. 3 and transmits only a light source vibrating in a single predetermined direction, and the first polarizing plate. (11) A pixel array bonded to an upper portion to pass through the light source of the first polarizing plate 11 as it is, and a pixel array bonded to an upper portion of the lower quartz layer 12 and receiving the transmitted light source to produce an image. A layer 13 and a liquid crystal layer 14 bonded to an upper portion of the pixel array layer 13 to align an image of the pixel array layer 13 according to distortion or vertical alignment characteristics, and an upper portion of the liquid crystal layer 14. And a second polarizing plate bonded to the uppermost quartz layer 15 to transmit an image oriented in the liquid crystal layer 14 and to the upper upper quartz layer 15 and transmitting the image at 90 ° rotation polarization. 16) and the liquid crystal layer 14 in a specific alignment direction It is made of a transparent electrode 17 is supplied to the power supply, and bonded to the inner surface of the upper and lower quartz layers 12 and 15 surrounding the liquid crystal layer 14.
상기 픽셀 어레이층은 제4도와 같이 복수개의 픽셀이 수직과 수평으로 나란히 배열되어 화상이 형성되도록 하는 픽셀 어레이(13′)와, 상기 픽셀 어레이(13′)에 화상 데이터를 공급하는 데이터 공급수단(18)과, 상기 픽셀 어레이(13′)에 화상이 형성되도록 펄스를 공급하는 게이트신호공급부(19)로 이루어진다.The pixel array layer includes a pixel array 13 'which allows a plurality of pixels to be arranged side by side horizontally and vertically as shown in FIG. 4, and data supply means for supplying image data to the pixel array 13'. 18) and a gate signal supply unit 19 for supplying a pulse to form an image in the pixel array 13 '.
상기 픽셀 어레이(13′)는 제5도와 같이 복수개의 수직으로 형성되는 데이터전극과, 상기 데이터전극과 복수개 교차되도록 수평으로 형성하는 게이트 전극과, 상기 교차되는 가장자리에 형성되는 픽셀로 이루어진다.The pixel array 13 ′ includes a plurality of vertically formed data electrodes as shown in FIG. 5, a gate electrode formed horizontally to cross the plurality of data electrodes, and pixels formed at the crossing edges.
상기와 같이 구성된 종래의 LCD 라이트밸브에 대한 동작은 제6도(a)와 같이 먼저 투명전극(17)에 전원이 공급되지 않을 경우 반사경 또는 색분리필터로부터 전달된 다중방향으로 진동하는 광원을 제1편광판(11)에서 단일의 수직방향으로 진동하는 광원만을 투과시키고 연이어 하판석영층(12)과 투명전극(17)을 통과한다.The operation of the conventional LCD light valve configured as described above may remove the light source vibrating in multiple directions transmitted from the reflector or the color separation filter when power is not supplied to the transparent electrode 17 as shown in FIG. Only one light source vibrating in a single vertical direction is transmitted from one polarizing plate 11, and subsequently passes through the lower plate quartz layer 12 and the transparent electrode 17.
이 때, 픽셀 어레이층(13)에 화상이 형성되도록 화상 데이터가 공급되면서 게이트전극에 팩스가 공급되고, 상, 하판 석영층(12, 15) 내면의 투명전극(17)에는 전원이 공급되지 않는다.At this time, while image data is supplied to form an image on the pixel array layer 13, fax is supplied to the gate electrode, and power is not supplied to the transparent electrodes 17 inside the upper and lower quartz layers 12 and 15. .
그러면 픽셀 어레이층(13)에 화상이 형성되고, 이 화상이 뒤틀림 배향된 액정분자의 선광성에 의해 편광방향이 90°회전되어 투과된 후 연이어 상판석영층(15)과 투명전극(17)을 통과한다.Then, an image is formed on the pixel array layer 13, and the image is rotated by 90 ° by the optical polarization of the twisted alignment liquid crystal molecules, and then passes through the upper plate quartz layer 15 and the transparent electrode 17. do.
이때 제2편광판(16)은 제1편광판(11)에 비해 수평에서 수직으로 90°뒤틀린 편광방향을 가짐으로 90°회전된 화상이 제2편광판(16)을 거쳐 배출된다.At this time, the second polarizing plate 16 has a polarization direction that is twisted 90 degrees from the horizontal to the vertical of the first polarizing plate 11 so that the image rotated by 90 degrees is discharged through the second polarizing plate 16.
그리고 제6도 (b)와 같이 투명전극에 전원이 공급되었을 경우 제1편광판(11)에서 단일의 수직방향으로 진동하는 광원만을 투과시키고, 연이어 하판석영층(12)과 투명전극(17)을 통과시킨다.In addition, when power is supplied to the transparent electrode as shown in FIG. 6 (b), only the light source vibrating in the single vertical direction is transmitted from the first polarizing plate 11, and the lower plate quartz layer 12 and the transparent electrode 17 are subsequently connected. Pass it through.
이때, 픽셀 어레이층(13)에 화상이 형성되도록 화상데이터를 공급하면서 게이트전극에 펄스가 공급되고 동시에 상, 하판석영층(12, 15)내면의 투명전극(17)에도 전원이 공급된다.At this time, a pulse is supplied to the gate electrode while supplying image data so that an image is formed on the pixel array layer 13, and power is also supplied to the transparent electrodes 17 inside the upper and lower plated quartz layers 12 and 15.
그러면 상기 화상데이터, 게이트펄스 편광광원에 의해서 픽셀 어레이층(13)에 화상이 형성되고, 투명전극의 전원공급에 의해서 뒤틀림 배향된 액정분자의 배열이 수직배향으로 재배열되어 이 화상의 편광방향이 회전없이 투과된다.Then, an image is formed on the pixel array layer 13 by the image data and the gate pulse polarized light source, and the array of twisted alignment liquid crystal molecules is rearranged in a vertical direction by the power supply of the transparent electrode so that the polarization direction of the image is changed. Permeate without rotation.
연이어 상판석영층(15)과 투명전극(17)을 통과하고 제1편광판(11)에 비해 수직인 제2편광판(16)에 의해 상기 화상이 투과되지 않는다.Subsequently, the image is not transmitted by the second polarizing plate 16 that passes through the upper plate quartz layer 15 and the transparent electrode 17 and is perpendicular to the first polarizing plate 11.
상기와 같은 종래의 일반적인 LCD 라이트 밸브는 200만 럭스(Lux) 내외의 조도를 갖는 후면광원램프(Back Light Lamp)가 LCD 라이트 밸브를 직사하기 때문에 발생하는 열을 송풍방식으로 방출하였다.The conventional general LCD light valve as described above emits heat generated by a back light lamp having a roughness of about 2 million Lux by directly directing the LCD light valve by a blowing method.
그러나 상기 방식은 전력소모가 크고, 소음이 발생하고, 설계 및 제작이 복잡한 문제점이 발생하였으며, 석영층등 광학계의 옵티칼(optical) 축이 벗어나 화질이 떨어지는 문제점이 있었다.However, the method has a problem in that power consumption is high, noise is generated, design and fabrication are complicated, and optical quality of optical systems such as quartz layers is deteriorated and image quality is deteriorated.
본 발명은 상기와 같은 문제점을 해결하기 위해 안출한 것으로 LCD 라이트밸브의 입사광 접촉면에 열전도성이 우수한 물질을 코팅하여 입사광으로 야기되는 LCD 라이트밸브의 열을 분산시키는데 그 목적이 있다.The present invention has been made to solve the above problems is to coat a material having excellent thermal conductivity on the incident light contact surface of the LCD light valve to dissipate the heat of the LCD light valve caused by incident light.
상기와 같은 목적을 달성하기 위한 본 발명은 다중 방향으로 진동하는 자연광원을 단일의 일방향으로 진동하는 광원만을 선택 투과시키는 제1편광판과, 상기 제1편광판의 일방향성 광원을 그대로 투과시키는 제1투과수단과, 상기 제1투과수단에 의해 투과된 광원으로 화상을 디스플레이하는 화상배열수단과, 상기 화상배열수단의 화상을 뒤틀림 또는 수직배향하여 투과시키는 액정수단과, 상기 액정수단의 배향된 화상을 그대로 투과시키며 액정의 유출을 막는 제2투과수단과, 상기 제2투과수단에서 발생하는 일방향성 광원의 화상을 90°회전된 편광으로 투과시키는 제2편광판과, 상기 제1투과수단과 제2투과수단 내면에 상기 액정수단이 동작하도록 전원을 공급하는 투명전극과, 상기 제1편광판과 제1투과수단사이에 화학증착방법으로 합착되고 후면 광원에 의해 상기 제1, 제2투과수단, 화상배열수단, 액정수단, 제1, 제2 편광판과 전극수단에서 발생하는 과도한 열을 방열수단으로 방출하는 열방수단으로 이루어짐을 특징으로 한다.The present invention for achieving the above object is a first polarizing plate for selectively transmitting only a light source vibrating in a single one direction of the natural light source vibrating in multiple directions, and a first transmission to transmit the unidirectional light source of the first polarizing plate as it is Means, image arranging means for displaying an image with a light source transmitted by said first transmitting means, liquid crystal means for transmitting the image of said image arranging means by twisting or vertically aligning, and an oriented image of said liquid crystal means as it is Second transmission means for transmitting and preventing the outflow of liquid crystal, a second polarizing plate for transmitting the image of the unidirectional light source generated by the second transmission means with polarized light rotated by 90 °, the first transmission means and the second transmission means The transparent electrode for supplying power to the liquid crystal means to operate on the inner surface, and the first polarizing plate and the first transmission means is bonded by a chemical vapor deposition method and the back By the one characterized by the second constituted by any one, a second transmission means, the image arrangement unit, a liquid crystal device, the first and nations means to release excess heat generated by the second polarizing plate and the electrode means to heat sink means.
이하 첨부된 도면을 참조하여 본 발명의 열방출 기능을 갖는 LCD라이트 밸브를 설명하면 다음과 같다.Hereinafter, an LCD light valve having a heat release function according to the present invention will be described with reference to the accompanying drawings.
제7도는 본 발명의 열방출 기능을 갖는 LCD 라이트 밸브에 대한 단면도이다.7 is a cross-sectional view of the LCD light valve having a heat dissipation function of the present invention.
본 발명의 열방출기능을 갖는 LCD 라이트 밸브는 제7도와 같이 반사경 또는 색분리필터로부터 전달된 다중방향으로 진동하는 광원을 받아 단일의 일정방향으로 진동하는 광원만을 투과시키는 제1편광판(11)과, 내부식성, 내마모성, 반사성을 가질뿐만 아니라 매우 뛰어난 열전도성을 가지는 물질로써, 상기 제1편광판(11) 상부에 화학증착방법으로 합착되어 제1편광판(11)을 거친 광원에 의해서 발생하는 열을 흡수하여 냉각수 또는 냉각핀의 접수(촉)로 방출하고 95%~100%의 광투과율을 가지는 DLC(Diamond Like Carbon)층(20)과, 상기 DLC층(20) 상부에 합착되어 DLC층(20)을 투과한 광원을 그대로 투과하는 하판석영층(12)과, 상기 하판석영층(12) 상부에 합착되고, 상기 투과된 광원을 받아 화상을 만들어내는 픽셀 어레이층(13)과, 상기 픽셀 어레이층(13) 상부에 합착되고, 픽셀 어레이층(13)의 화상을 뒤틀림 또는 수직 배향 특성에 따라 배향시키는 액정층(14)과, 상기 액정층(14) 상부에 합착되고, 액정층(14)에서 배향된 화상을 투과시키며 액정의 유출을 막는 상판 석영층(15)과, 상기 상판 석영층(15) 상부에 합착되고, 90°회전편광으로 상기 화상을 투과시키는 제2편광판(16)과, 상기 액정층(14)이 특정 배향방향을 이루도록 전원을 공급하고 액정층을 둘러싼 상, 하판석영층(12, 15)내면에 합착되는 투명전극(17)으로 이루어진다.The LCD light valve having the heat dissipation function of the present invention includes a first polarizing plate 11 that receives only a light source vibrating in a single direction by receiving a light source vibrating in multiple directions transmitted from a reflector or a color separation filter as shown in FIG. , As a material having corrosion resistance, abrasion resistance, and reflectivity, as well as a very excellent thermal conductivity, is bonded to the upper portion of the first polarizing plate 11 by chemical vapor deposition to heat generated by the light source passing through the first polarizing plate 11. It is absorbed and released to the receiving water (cold) of the cooling water or the cooling fins, and has a DLC (Diamond Like Carbon) layer 20 having a light transmittance of 95% to 100%, and the DLC layer 20 bonded to the DLC layer 20. The lower plate quartz layer 12 that transmits the light source that has passed through the light source as it is, the pixel array layer 13 that is bonded to an upper portion of the lower plate quartz layer 12, and receives the transmitted light source to form an image, and the pixel array Bonded to the top of layer 13, The liquid crystal layer 14 for aligning the image of the cell array layer 13 according to the distortion or vertical alignment characteristic and the liquid crystal layer 14 are bonded to the upper portion of the liquid crystal layer 14 to transmit the image oriented in the liquid crystal layer 14 and The top plate quartz layer 15 which prevents the outflow, the second plate 16 bonded to the top plate of the top quartz layer 15 to transmit the image with 90 ° rotation polarization, and the liquid crystal layer 14 have a specific orientation. It is composed of a transparent electrode 17 which is supplied to the power supply to achieve the direction and is bonded to the inner surface of the upper and lower plate quartz layers 12 and 15 surrounding the liquid crystal layer.
그리고 상기 픽셀 어레이층(13)과 픽셀 어레이(13′)의 구성은 종래와 동일하며 기능역시 동일하다.The pixel array layer 13 and the pixel array 13 'are identical in structure to each other in the related art.
상기와 같이 구성된 본 발명의 열방출 기능을 갖는 LCD 라이트 밸브에 대한 동작은 반사경 또는 색분리 필터로부터 전달된 다중 방향으로 진동하는 광원을 제1편광판(11)에서의 단일의 수직 방향으로 진동하는 광원만을 투과시키고, 연이어 DLC층(20)과 하판석영층(12)과 투명전극(17)을 순차적으로 통과하며 투명전극(17)에 전원이 인가되지 않는다.Operation of the LCD light valve having a heat release function of the present invention configured as described above is a light source for vibrating in a single vertical direction at the first polarizing plate 11 the light source vibrating in multiple directions transmitted from the reflector or color separation filter Only the light is transmitted, successively passing through the DLC layer 20, the lower plate quartz layer 12, and the transparent electrode 17, and no power is applied to the transparent electrode 17.
이 때, 픽셀 어레이층(13)에 화상이 형성되도록 화상데이터를 공급하면서 게이트전극에 펄스가 공급된다.At this time, a pulse is supplied to the gate electrode while supplying image data so that an image is formed on the pixel array layer 13.
그러면 픽셀 어레이층(13)에 화상이 형성되고 이 화상이 뒤틀림 배향된 액정분자의 선광성에 의해 편광방향이 90°회전되어 투과된 후 연이어 상판석영층(15)과 투명 전극(17)을 통과한다.Then, an image is formed on the pixel array layer 13, and the image is rotated by 90 ° by the optical polarization of the twisted alignment liquid crystal molecules, and then passes through the upper plate quartz layer 15 and the transparent electrode 17. .
제2편광판(16)은 제1편광판(11)에 비해 수평에서 수직으로 90°뒤틀림 편광방향을 가짐으로 상기 90°회전된 화상이 제2편광판(16)을 거쳐 전송된다.Since the second polarizing plate 16 has a 90 ° twisted polarization direction from the horizontal to the vertical of the first polarizing plate 11, the 90 degree rotated image is transmitted through the second polarizing plate 16.
한편, 200만 럭스(Lux)의 후면광원(Back Light)이 계속해서 투사되며 제1, 2편광판(11, 16) 상, 하판석영층(12, 15), 투명전극(17), 픽셀 어레이층(13)과 액정층(14)에서 높은 온도의 열이 발생한다.Meanwhile, 2 million Lux back light is continuously projected, and the upper and lower quartz layers 12 and 15, the transparent electrode 17, and the pixel array layer are disposed on the first and second polarizing plates 11 and 16. High temperature heat is generated in the (13) and the liquid crystal layer (14).
상기 발생하는 열을 DLC(Diamond Like Carbon)층(20)에서 흡수하여 히트 싱크선(heat sink line)을 통해 냉각핀 또는 냉각수로 방출한다.The generated heat is absorbed by the DLC (Diamond Like Carbon) layer 20 and discharged to a cooling fin or cooling water through a heat sink line.
그러면 과열로 인한 소자의 열화로 발생하는 오동작 방지는 물론 향상된 화질을 감상할 수 있다.This prevents malfunction caused by deterioration of the device due to overheating, and also improves image quality.
그리고 투명전극(17)에 전원이 인가된 경우도 상기와 동일한 동작으로 소자의 열화를 방지한다.In addition, even when power is applied to the transparent electrode 17, deterioration of the device is prevented by the same operation as described above.
상기와 같은 본 발명의 열방출기능을 갖는 LCD 라이트 밸브는 프로젝션(projection) TV에 적용되었을 경우 설계가 용이하며, 설계비용 및 제작비용이 감소하고, 송풍으로 인한 소음이 줄어들며 전력손실 또한 현저히 줄어드는 효과가 있다.LCD light valve having a heat release function of the present invention as described above is easy to design when applied to a projection (projection) TV, the design cost and manufacturing cost is reduced, the noise due to airflow and the power loss is also significantly reduced There is.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100939963B1 (en) * | 2007-10-15 | 2010-02-04 | (주)유양디앤유 | Multi-sided stereo emission light emitting device and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR970016685A (en) | 1997-04-28 |
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