Display backlight module including photo-sensing device, LCD panel and display equipment
A technology of liquid crystal display panel and liquid crystal display device, applied in radiation control device, optics, nonlinear optics and other directions, can solve problems such as visual damage of users
Inactive Publication Date: 2010-09-22
AU OPTRONICS CORP
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Problems solved by technology
If there is a halogen lamp in the environment, or under a light source with a color temperature of about 2856K, although the human eye cannot see the infrared light, the photosensitive device will sense the infrared light and adjust the brightness of the LCD panel to a level that is not suitable for the human eye. Watching the brightness, and further damage the user's eyesight
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[0046] Please refer to Figure 1A , which shows a block diagram of the liquid crystal display device 1 according to the first embodiment of the present invention. The liquid crystal display device 1 includes a liquid crystal display panel 10 and a display backlight module 12 . The photosensitive device 14 disposed in the liquid crystal display panel 10 is used to receive incident light 11 , and the control circuit 13 in the photosensitive device 14 outputs current to enable the display backlight module 12 to adjust the display brightness 15 of the display panel. Figure 1B It is a top view showing the first substrate 200 in the liquid crystal display panel 10 , wherein the first substrate 200 has a pixel region 100 and a photosensitive region 101 arranged around the pixel region 100 . The photosensitive devices 14a, 14b, 14c, and 14d are respectively disposed at four corners of the photosensitive area 101, and can receive incident light for sensing. In other embodiments, thos...
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The invention provides a display backlight module comprising a photosensitive device, a liquid crystal display panel and a liquid crystal display unit. The liquid crystal display panel is used in the liquid crystal display unit, the liquid crystal display unit is provided with the display backlight module which comprises a first substrate, a second substrate, a liquid crystal layer, at least a photosensitive device and a visible light filtering layer. At least one photosensitive device is positioned on the photosensitive area of the first substrate and used to receive incident light, wherein,the photosensitive device comprises a first photosensitive element used to sense the incident light to produce a first current, and a second photosensitive element electrically connected with the first photosensitive element; the visible light filtering layer is arranged above the second photosensitive element arranged on the photosensitive area, and is used to filter the visible light of the incident light to make the second photosensitive element sense the filtered incident light to produce a second current.
Description
technical field [0001] The present invention relates to a photosensitive device, and in particular to a photosensitive device included in a display backlight module, a liquid crystal display panel and a liquid crystal display device. Background technique [0002] Portable communication devices are becoming more and more important in today's era of vigorous development of communication technology. And users have more and more demands on the liquid crystal display panel on the portable communication device, among which the contrast, resolution, color saturation and brightness are all important indicators affecting the quality of the liquid crystal display panel. [0003] The brightness of the panel is often adjusted by installing a photosensitive device on the panel that can sense the brightness of the surrounding environment. If the current induced by the light received by the photosensitive device is strong, it means that the light intensity of the surrounding environment i...
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IPC IPC(8): H01L27/144G02F1/13357G02F1/1333G02F1/133
Inventor 陈佩瑜曾泓玮李纯怀
Owner AU OPTRONICS CORP