Light intensity detector for backlight automatic regulating system of liquid crystal display

Abstract

The invention provides a light intensity detector for a backlight automatic regulating system of a liquid crystal display. The light intensity detector is arranged on an array substrate of the liquid crystal display and is arranged at a display area, namely, the pixel area or a non-display area (the non-pixel area) of the array substrate. According to the detector, an external light intensity detector is integrated at the array substrate, particularly, the actual luminance that the environmental light irradiates on the pixel at different time sections is detected by designing an electric optical transistor and a detection circuit, and the luminance of a backlight source is regulated according to the actual luminance, thereby reducing the module light source power consumption and the production cost.

Description

technical field [0001] The invention relates to the field of Array and Cell design of liquid crystal panels, in particular to a light intensity detection device for automatically adjusting brightness of a backlight, in particular to a light intensity detector for an automatic adjustment system of a liquid crystal display backlight. Background technique [0002] The transparent display panel uses external ambient light as the light source in sunny days / days, and the module light source needs to be turned on at night. Therefore, it is necessary to set up a detection unit to detect the brightness of the surrounding environment, and then adjust the brightness of the module light source, so as to reduce the power consumption of the module light source and standardize the brightness of the display object. [0003] At present, the detection of light intensity needs to increase the electronic components of photoresistor or photodiode, which increases the cost of the panel module. At...

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Problems solved by technology

[0003] At present, the detection of light intensity needs to increase the electronic components of photoresistor or photodiode, which increases the cost of the panel module. At the same time, it is impossible to specifically detect the actual brightness of the pixels irradiated by ambient light at different time periods, and it is impossible to change the module light source in time. Brightness, high production cost, high energy consumption

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