LCD screen display method and device for LCD screen display
A technology of screen display and display screen, which is applied in the field of communication, and can solve problems such as dark screen display, poor screen brightness and effect
Active Publication Date: 2017-03-29
苏州医疗器械产业发展集团有限公司
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Problems solved by technology
The existing LCD power saving method is mainly to adjust the brightness of the LCD backlight according to the ambient light brightness by sensing the ambient light brightness to achieve the purpose of saving power in the dark. This adjustment method is relatively simple and easy to implement, but there is a relatively large The problem is that in places with dark ambient light, the screen display will also become very dark, resulting in poor screen brightness and effects. This is also the reason why this function is not enabled by default when the external power supply is powered.
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[0048]Gamma is derived from the response curve of cathode ray tube CRT monitor / TV, that is, the nonlinear relationship between the brightness of CRT monitor and the input voltage. For the same original picture, the larger the value of Gamma is adjusted, the brighter the output picture will be, but a certain color will be lost. resolution. The adjustment of Gamma, reflected in the LCD screen, is the control of the phase state of the liquid crystal molecules. The larger the Gamma value, the higher the light transmittance of the liquid crystal molecules. In this embodiment, when the system automatically adjusts and lowers the backlight brightness level of the LCD display screen according to the ambient light brightness, by adjusting the Gamma value, the amount of light passing through the screen is controlled, and the reduced backlight brightness is compensated, so as to save power while keeping the original brightness as much as possible. The purpose of the display effect.
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The invention discloses a liquid crystal display (LCD) screen display method and a device for the display of an LCD screen. The method comprises the steps of acquiring a nonlinear relation between a backlight brightness grade under different environmental brightness and a Gamma adjusting value; inquiring a corresponding Gamma adjusting value in the nonlinear relation according to the current environmental brightness and the backlight brightness grade of the current LCD display screen when the current environmental light is darkened and the system lowers the backlight brightness grade of the LCD display screen; and adjusting the Gamma value of a current LCD display screen image according to the Gamma adjusting value and displaying the adjusted image. When the LCD display brightness is automatically adjusted and reduced according to the environmental brightness, the light transmission of the screen is controlled to compensate the variation of the brightness by adjusting the Gamma value, so that the image display vision effect required by users can be reached while the electric power is saved.
Description
technical field [0001] The invention relates to the communication field, in particular to an LCD screen display method and an LCD screen display device. Background technique [0002] How LCD monitors work: [0003] From the perspective of the structure of the liquid crystal display, whether it is a notebook computer or a desktop system, the LCD display screen used is a layered structure composed of different parts. The LCD consists of two glass plates, approximately 1 mm thick, separated by uniform intervals of 5 μm containing liquid crystal material. Because the liquid crystal material itself does not emit light, there are lamp tubes as light sources on both sides of the display screen, and there is a backlight panel (or uniform light panel) and reflective film on the back of the LCD screen. The backlight panel is composed of fluorescent substances. It can emit light, and its main function is to provide a uniform background light source. [0004] Light from the backlight...
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IPC IPC(8): G09G3/36
Inventor 高滨
Owner 苏州医疗器械产业发展集团有限公司