Backlight system and liquid crystal display device using the same
A liquid crystal display device and backlight technology, applied in the direction of light source, electric light source, point light source, etc., to achieve the effect of realizing the light utilization rate of the light source, improving the light utilization rate, and reducing uneven brightness
Inactive Publication Date: 2012-05-23
SHARP KK +1
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Problems solved by technology
Of course, it is not forbidden to set color filters in order to prevent inappropriate color mixing caused by light leakage when color separation is not ideal
Method used
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Embodiment
[0134] Hereinafter, the results of concretely verifying the effects of the present invention using Examples and Comparative Examples are shown. However, the present invention is not limited to the following examples.
[0135] As an embodiment of the present invention, try to make Figure 7 In the backlight system of the mode shown in (a), the light source 1 composed of LEDs each emitting R, G, and B main wavelengths is used as a light source array. Figure 7 In the state of (a) with three sections in the depth direction and three sections in the left and right directions on the paper, the space emitted from the upper surface of the microlens was measured using a luminance and chromaticity unified measurement device (manufactured by TOPCON TECHNOHOUSE, UA-1000) Brightness distribution.
[0136] The light source 1 is composed of light-emitting points 10 for all R, G, and B colors and a condenser lens system 11 . Mounted LEDs mounted with LED chips are used for the light-emitt...
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Abstract
Disclosed is a backlight system comprised of a light emitting portion (1) having a plurality of light sources which emit light having different dominant wavelengths, and an imaging optical system (3) containing a plurality of microlenses (3a) which concentrate the light emitted from the light emitting portion (1), wherein a liquid crystal panel is irradiated with the light passing through the imaging optical system (3). The liquid crystal panel contains a plurality of image elements which are pitched at a predetermined distance. Each image element contains a plurality of picture elements corresponding to different colors. If the arrangement pitch of the image elements is designated by P, and the magnification ratio of the imaging optical system (3) is designated by 1 / n, the arrangement pitch (P1) of a light source (1) is represented by P1=n x P, and the arrangement pitch (P2) of the microlenses (3a) is represented by P2=(n / (n+1)) x P.
Description
technical field [0001] The present invention relates to a backlight system and a liquid crystal display device using the same. Specifically, it relates to a backlight system in which the sub-pixels behind the pixels of a transmissive liquid crystal display element are differentiated by color from the back of the backlight to converge the light of the corresponding color, And a liquid crystal display device that uses the backlight system and the above-mentioned liquid crystal display element to perform full-color display. Background technique [0002] In the liquid crystal display device for full-color display, in the prior art, the pixel of the transmissive liquid crystal display element is divided into three sub-pixels, and red (R), green (G), and blue (B) are pasted on the three sub-pixels respectively. White light is irradiated to them from the backlight, and the transmittance of the light when it passes through the sub-pixel is controlled by applying a voltage signal to ...
Claims
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IPC IPC(8): F21S2/00G02F1/13357F21Y101/02F21Y105/00
CPCG02F1/133606F21S2/00G02F2001/133607G02F1/133607
Inventor 内田龙男铃木芳人川上彻关家一雄西泽真裕石锅隆宏片桐麦桥本佳扩石原将市神崎修一石井裕
Owner SHARP KK