KR100325477B1 - Liquid crystal display module having separation type reflection plate and method for controlling incident light path - Google Patents

Liquid crystal display module having separation type reflection plate and method for controlling incident light path Download PDF

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Publication number
KR100325477B1
KR100325477B1 KR1019950042307A KR19950042307A KR100325477B1 KR 100325477 B1 KR100325477 B1 KR 100325477B1 KR 1019950042307 A KR1019950042307 A KR 1019950042307A KR 19950042307 A KR19950042307 A KR 19950042307A KR 100325477 B1 KR100325477 B1 KR 100325477B1
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South Korea
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liquid crystal
panel
crystal display
light
display module
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KR1019950042307A
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Korean (ko)
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KR970028704A (en
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김유진
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주식회사 현대 디스플레이 테크놀로지
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side

Abstract

PURPOSE: A liquid crystal display module having a separation type reflection plate and a method for controlling an incident light path are provided to prevent deterioration in contrast due to external lights. CONSTITUTION: A liquid crystal display module includes a liquid crystal panel(2), and a reflection plate(3) that is separated from the liquid crystal panel to reflect lights inputted from a back light to provide light to the liquid crystal panel and, simultaneously, reflects external lights to the direction of a lower panel of the liquid crystal display panel. The reflection plate is attached/detached to/from the liquid crystal panel. Lights passing through an upper panel of the liquid crystal display panel are reflected by the reflection plate so that the lights are not transmit through the lower panel of the liquid crystal display panel.

Description

분리형 반사판을 갖는 액정표시모듈과 입사광 경로 조절방법Liquid Crystal Display Module with Separated Reflector and Incident Light Path Control Method

본 발명은 액정표시장치를 이용한 제품에 관한 것으로서, 특히 액정표시장치의 반사판이 분리된 액정표시모듈에 관한 것이다.The present invention relates to a product using a liquid crystal display device, and more particularly, to a liquid crystal display module in which a reflective plate of the liquid crystal display device is separated.

액정표시모듈은 액정표시패널을 구동용 집적회로와 연결하여 인쇄회로기판에 설치하고, 반사판, 확산판, 백라이트등을 설치한 것으로서, 컴퓨터, 액정티브이, 액정 캠코더등에 널리 사용되고 있다.A liquid crystal display module is installed on a printed circuit board by connecting a liquid crystal display panel to a driving integrated circuit, and installed a reflecting plate, a diffusion plate, a backlight, etc., and is widely used in computers, liquid crystals, and liquid crystal camcorders.

이러한 액정표시모듈을 요즈음 널리 사용되고 있는 노트북 컴퓨터에 사용시, 해결되지 않는 문제중의 하나가 외부의 빛에 의한 시야각 문제로서, 외부 빛이 입사되는 상태에서는 사용자의 눈이 화면과 이루는 각에 따라 콘트라스트에 변화를가져와서 어떤 각도에서는 화면에 표시된 영상을 알아보기가 힘든 문제가 발생한다.One of the problems that cannot be solved when using such a liquid crystal display module in a notebook computer that is widely used these days is a viewing angle problem caused by external light. At some angle, the change is difficult to see the image displayed on the screen.

이러한 액정표시모듈에 있어서, 외부의 광은 액정표시패널 전면에서 입사하여 액정패널의 상/하기판을 투과하고, 반사판(3)에서 반사된 후 다시 액정패널의 하/상기판을 투과하여 사용자측으로 향하게 되는데, 액정표시패널구조의 비투광성 부분이나 투광성 부분 자체의 광손실로 인하여 광이 액정표시패널을 통과할 때마다 손실이 발생한다.In the liquid crystal display module, external light is incident on the front surface of the liquid crystal display panel to pass through the upper and lower substrates of the liquid crystal panel, and is reflected by the reflecting plate 3 and then passes through the lower and upper plates of the liquid crystal panel to the user side. When the light passes through the liquid crystal display panel due to the light loss of the non-transmissive portion or the transparent portion itself of the liquid crystal display panel structure, a loss occurs.

첨부한 도면 제 1 도는 종래의 기술에 따른 노트북 컴퓨터에 채용한 액정표시모듈에서 외부 입사광의 경로를 보여주는 개략적 도면이다.1 is a schematic diagram showing a path of external incident light in a liquid crystal display module employed in a notebook computer according to the related art.

도면에서 보여지는 것처럼, 외부 입사광은 액정표시패널을 투과하여 하부의 반사판(3)에서 반사되어 다시 액정표시패널을 투과하여 사용자측으로 나가게 된다.As shown in the drawing, the external incident light is transmitted through the liquid crystal display panel, reflected by the lower reflector 3, and then transmitted again through the liquid crystal display panel to the user side.

외부 투과광이 거의 없는 어두운 방에서 노트북 컴퓨터를 켰을 경우에는 액정패널을 투과하는 광원은 백라이트로부터 조사되어 반사판(3)에서 반사되어 액정패널을 투과하는 광뿐이므로 밝고 깨끗한 화면을 보여주지만, 보통의 사용시에는 외부광의 입사가 있으므로, 콘트라스트를 높이기 위해서는 액정표시패널을 통한 입사광과 반사광의 광손실을 최대한 없애 주어야 한다.When the notebook computer is turned on in a dark room with little externally transmitted light, the light source passing through the liquid crystal panel is only the light that is emitted from the backlight, reflected by the reflector 3, and passes through the liquid crystal panel. Since there is an incident of external light, in order to increase the contrast, the optical loss of incident light and reflected light through the liquid crystal display panel should be eliminated as much as possible.

그러나, 종래 기술의 경우, 액정표시패널 자체의 구성 및 특성때문에 반사판(3)에서 반사되어 투과되는 광은 입사한 광량에 비하여 극히 적은 양만이 투과되므로, 사용자의 눈이 디스플레이 면과 이루는 각에 따라 콘트라스트가 나빠져서 화상이 제대로 보이지 않게 되는 문제점이 존재한다.However, in the related art, since the light reflected and transmitted by the reflector 3 is transmitted only a very small amount compared to the amount of incident light, due to the configuration and characteristics of the liquid crystal display panel itself, the eye of the user depends on the angle of the display surface. There is a problem in that the contrast is deteriorated so that the image is not properly viewed.

그러므로, 본 발명에서는 반사판을 분리하여 외부 입사광이 액정표시패널을 투과하지 않고 분리된 반사판을 반사한 상태의 빛이 액정표시패널의 하부패널을 통하여 상부패널을 투과하도록 하므로써 외부광에 의한 콘트라스트의 저하를 방지할 수 있는 액정표시모듈 및 그 액정표시모듈로 입사되는 외부광의 경로조절방법을 제공하기 위한 것이다.Therefore, in the present invention, the reflection plate is separated so that the incident light does not penetrate the liquid crystal display panel, but the light reflecting the separated reflector is transmitted through the lower panel of the liquid crystal display panel, thereby reducing the contrast caused by the external light. To provide a liquid crystal display module and a path control method of the external light incident to the liquid crystal display module that can be prevented.

이와 같은 본 발명의 액정표시모듈은 액정패널과, 상기 액정패널과 분리되어 상기 액정패털에 광을 공급하기 위하여 백라이트 광원으로부터 입사되는 광을 반사하는 동시에 외부 입사광을 액정표시패널의 하부패널방향으로 반사하는 반사판을 포함하여 구성한 것을 특징으로 한다.Such a liquid crystal display module of the present invention is a liquid crystal panel and separated from the liquid crystal panel to reflect light incident from a backlight light source to supply light to the liquid crystal panel and at the same time reflects external incident light toward the lower panel of the liquid crystal display panel. It is characterized by including a reflector.

본 발명의 액정표시모듈의 외부광 경로조절방법은 반사판을 수평하게 액정패널로부터 분리하는 과정과, 액정패널의 상부패널을 투과하는 빛이 반사판에서 반사되어 하부패널을 통하여 투과하지 못하는 각도로 액정패널의 고정각을 조절하는 과정으로 이루어지는 것을 특징으로 한다.The external light path control method of the liquid crystal display module according to the present invention comprises the steps of separating the reflector from the liquid crystal panel horizontally, and the light transmitted through the upper panel of the liquid crystal panel is reflected by the reflector to prevent the transmission through the lower panel Characterized in that the process consisting of adjusting the fixed angle of the.

이하 첨부한 도면을 참조하여 본 발명의 바람직한 실시예를 설명한다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

첨부한 도면 제 2 도는 본 발명 액정표시모듈을 채용한 일례인 노트북 컴퓨터의 개략적인 구성도이다.2 is a schematic configuration diagram of a notebook computer which is an example employing the liquid crystal display module of the present invention.

도면에서 보여지는 것처럼, 키이 보드부(1)와, 액정 표시 패널(2) 및 반사판(3)으로 구성되고, 액정패널 및 반사판(3)은 소정 위치에서 고정시킬 수 있는 고정장치(도면에 미도시)를 구비한다.As shown in the figure, a key board portion 1, a liquid crystal display panel 2 and a reflecting plate 3, and the liquid crystal panel and the reflecting plate 3 are fixed to a predetermined position (not shown in the drawing) C).

노트북 컴퓨터에 전원을 공급하면 컴퓨터의 액정패널은 소정의 화상을 표시하게 된다. 대부분의 경우에 있어서, 노트북 컴퓨터는 실내에서 사용되기 때문에 액정패널의 외부광원은 주로 형광등 빛이다. 그러므로 형광등의 설치위치에 따라서 광의 조사량이 다른 영역들이 존재한다. 따라서, 사용자는 외부광원이 많이 조사되는 방향으로 반사판(3)을 위치시키고 수평으로 놓은 다음, 액정패널의 각을 조절하여 콘트라스트가 최적인 위치를 찾는다. 콘트라스트가 최적인 위치가 찾아지면 그 위치에 액정패널을 고정시키고 컴퓨터를 사용한다. 이 때의 외부광의 경로는 반사판(3)을 통하여 액정패널의 하부패널을 통하여 상부패널로 투과되어 나가게 되므로 입사광량과 투과광량의 차이를 줄여서 콘트라스트를 향상시킬 수가 있다.When power is supplied to the notebook computer, the liquid crystal panel of the computer displays a predetermined image. In most cases, since notebook computers are used indoors, the external light source of the liquid crystal panel is mainly fluorescent light. Therefore, there are regions in which the irradiation amount of light differs depending on the installation position of the fluorescent lamp. Therefore, the user locates the reflection plate 3 in a direction in which a lot of external light sources are irradiated and places it horizontally, and then adjusts the angle of the liquid crystal panel to find a position having an optimum contrast. When the optimum contrast is found, fix the LCD panel at that location and use a computer. At this time, the path of external light is transmitted through the reflecting plate 3 to the upper panel through the lower panel of the liquid crystal panel, thereby improving contrast by reducing the difference between the amount of incident light and the amount of transmitted light.

상기에서는 실내에서 형광등을 외부광원으로 사용하는 경우에 대하여 설명하였지만, 태양광을 외부광원으로 사용하거나 태양광과 형광등 또는 백열등을 외부광원으로 사용하는 경우에도 앞에서 설명한 것과 마찬가지의 방법으로 액정패널의 각도를 조절하므로써 최적의 콘트라스트 상태로 조절할 수가 있다.In the above, the case where the fluorescent lamp is used as an external light source in the room has been described. However, when the solar light is used as the external light source or when the solar light, the fluorescent lamp or the incandescent lamp is used as the external light source, the angle of the liquid crystal panel is the same as described above. You can adjust to the optimum contrast by adjusting.

상기 두 경우에 있어서, 반사판(3)은 착탈식으로 구성하여 휴대시에는 접어서 휴대하고, 사용시에는 반사판(3)을 펴서 사용하도록 한다.In the above two cases, the reflector 3 is detachably constructed so that it can be folded and carried when carrying, and the reflector 3 is stretched out when used.

이상에서 설명한 바와 같이 본 발명은 액정모듈의 패널과 반사판을 분리하여 사용하므로써 외부광의 진행경로에서 패널의 투과중에 발생하는 빛의 손실을 줄이고 영상의 콘트라스트의 저하를 막을 수 있게 한다. 그러므로 사용자는 자기가 컴퓨터를 사용하고 있는 위치에서 자리를 바꾸거나 할 필요없이 패널의 방향만을 최적의 위치로 조절하므로써 만족한 상태에서의 사용이 가능해진다. 따라서 본 발명은 제품의 고급화, 상품의 신뢰성향상 및 사용자의 편의성 증대 효과를 제공할 수있다.As described above, according to the present invention, by separating the panel and the reflecting plate of the liquid crystal module, it is possible to reduce the loss of light generated during the transmission of the panel in the path of external light and to prevent the deterioration of the image contrast. Therefore, the user can use in a satisfactory state by adjusting only the direction of the panel to the optimum position without having to change the position at the position where the user is using the computer. Therefore, the present invention can provide the effect of high-quality products, improved product reliability, and user convenience.

여기에서는 본 발명의 특정 실시예에 대해서 설명하고 도시하였지만, 당업자에 의하여 이에 대한 수정과 변형을 할 수 있다. 따라서, 이하, 특허청구의 범위는 본 발명의 진정한 사상과 범위에 속하는 한 모든 수정과 변형을 포함하는 것으로 이해할 수 있다.Although specific embodiments of the present invention have been described and illustrated herein, modifications and variations can be made by those skilled in the art. Accordingly, the following claims are to be understood as including all modifications and variations as long as they fall within the true spirit and scope of the present invention.

제 1 도는 종래의 기술에 따른 노트북 컴퓨터의 개략적인 단면도.1 is a schematic cross-sectional view of a notebook computer according to the prior art.

제 2도는 본 발명의 실시예에 따른 노트북 컴퓨터의 개략적인 단면도.2 is a schematic cross-sectional view of a notebook computer according to an embodiment of the present invention.

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

1 : 키이 보드부 2 : 액정 표시 패널1: Key board portion 2: Liquid crystal display panel

3 : 반사판3: reflector

Claims (3)

액정패널과, 상기 액정패널과 분리되어, 상기 액정패널에 광을 공급하기 위하여 백라이트 광원으로부터 입사되는 광을 반사하는 동시에 외부 입사광을 액정표시패널의 하부패널방향으로 반사하는 반사판을 포함하여 구성한 것을 특징으로 하는 분리형 반사판을 갖는 액정표시모듈.And a reflection plate which is separated from the liquid crystal panel and which reflects light incident from a backlight light source to supply light to the liquid crystal panel and at the same time reflects external incident light toward the lower panel of the liquid crystal display panel. A liquid crystal display module having a separate reflector plate. 제 1 항에 있어서,The method of claim 1, 상기 반사판은 착탈식인 것을 특징으로 하는 분리형 반사판을 갖는 액정표시모듈.And said reflecting plate is a removable reflector. 반사판을 액정패널로부터 펴서 분리하는 과정과, 액정패널의 상부패널을 투과하는 빛이 반사판에서 반사되어 하부패널을 통하여 투과하지 못하는 각도로 액정패널의 고정각을 조절하는 과정으로 이루어지는 것을 특징으로 하는 입사광 경로 조절방법.Incident light comprising a process of separating the reflecting plate from the liquid crystal panel and adjusting the fixed angle of the liquid crystal panel at an angle at which light transmitted through the upper panel of the liquid crystal panel is reflected from the reflecting plate and is not transmitted through the lower panel. How to adjust the route.
KR1019950042307A 1995-11-20 1995-11-20 Liquid crystal display module having separation type reflection plate and method for controlling incident light path KR100325477B1 (en)

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