Liquid crystal display and terminal

Abstract

The invention discloses a liquid crystal display and a terminal. The liquid crystal display comprises a liquid crystal display glass panel, a driving chip, a backlight unit which is used for receiving backlight current and transmitting backlight light to the liquid crystal display glass panel, an analog-to-digital converter, an ambient light sensor circuit integrated on the driving chip and a backlight control unit, wherein, the ambient light sensor circuit is used for receiving external ambient light and outputting analog light current or analog light voltage to the analog-to-digital converter according to the external ambient light; the analog-to-digital converter is used for receiving analog light current or analog light voltage, and converting the analog light current or analog light voltage into digital light current or digital light voltage; the backlight control unit is used for receiving the digital light current or digital light voltage output by the analog-to-digital converter and adjusting the size of the backlight current which is output to a backlight unit according to the changing direction of the digital light current or the digital light voltage in the same direction. The embodiment of the invention can realize the change of display brightness of the liquid crystal display along with the change of the external light intensity.

Description

technical field [0001] The invention relates to the field of liquid crystal display technology, in particular to a liquid crystal display screen and a terminal. Background technique [0002] Liquid Crystal Display (LCD, Liquid Crystal Display) is a display screen that uses liquid crystal to control light transmittance technology to achieve color. Liquid Crystal Display has the advantages of clear display images and energy saving. application. [0003] A liquid crystal display in the prior art is mainly composed of a backlight unit, an LCD glass panel, and a driver chip. Among them, the backlight unit provides backlight light to the LCD glass panel, and the LCD glass panel includes an upper glass and a lower glass, and liquid crystal molecules and red, green and blue (RGB, Red, Green, Blue) color Filter film, the liquid crystal molecules are deflected under the action of the row and column drive signals output by the LCD driver chip, controlling the transmittance of the bac...

AI Technical Summary

Problems solved by technology

[0005] The inventor found in the process of researching the prior art that existing terminals such as mobile phones can change the brightness of the LCD screen by adjusting the intensity of the backlight light emitted by the LCD backlight unit, but the LCD screen in the existing terminal cannot automatically Adjust display brightness so that automatic power saving is not possible

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