Method for adjusting screen brightness of LCD

A liquid crystal display, screen brightness technology, applied in static indicators, instruments, etc., can solve problems such as unstable screen brightness, and achieve the effect of ensuring viewing comfort

Inactive Publication Date: 2009-12-23
SHENZHEN TCL NEW-TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for adjusting the screen brightness of a liquid crystal display, aiming to solve the problem in the prior art that the screen brightness of the liquid crystal display is unstable when it is turned on

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  • Method for adjusting screen brightness of LCD
  • Method for adjusting screen brightness of LCD

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Embodiment Construction

[0025] The technical solution provided by the present invention is: to detect the screen brightness value LS when the screen brightness is constant, and to measure the screen brightness value of the LCD display at LS during the time period (TS) from when the LCD display is turned on to when the screen brightness is stable. The required contrast, brightness and backlight parameter values ​​(hereinafter referred to as dynamic parameter values), these contrast, brightness and backlight parameter values ​​change with a certain time interval, and the contrast, brightness and backlight value parameters corresponding to each time interval are stored in the In the memory of the LCD display; when the LCD display is turned on, the MCU of the LCD display reads the corresponding contrast, brightness and backlight parameter values ​​from the memory according to the set time interval and assigns them to the corresponding registers, so that the LCD display can be maintained during the startup ...

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Abstract

The invention is suitable for an LCD and provides a method for adjusting screen brightness of the LCD. The method comprises the following steps that: a, an MCU of the LCD reads dynamic parameter values one by one by groups from a memory according to the set time interval and assigns the values to a corresponding register within a start-up time of the LCD; and b, the LCD adjusts the display effect according to the dynamic parameter values to make the screen brightness value keep constant. The technical solution provided by the method makes the screen brightness of the LCD kept in a constant range all the time, ensures the watching comfort of users, and avoids troubles that the users manually and repeatedly adjust brightness, contrast and backlight parameters for obtaining better watching brightness.

Description

technical field [0001] The invention belongs to liquid crystal display technology, in particular to a method for adjusting the screen brightness of a liquid crystal display. Background technique [0002] With the development of technology, liquid crystal TV (LCD TV) will gradually replace traditional CRT (cold cathode ray tube) TV with its light and thin, large screen and space-saving features. However, at the current stage, LCDTV still has some shortcomings, such as high energy consumption, less vivid colors than CRT, and screen brightness changes with time, etc. [0003] Such as figure 1 As shown in FIG. 2 , the brightness of the screen of the existing LCD TV will gradually become brighter automatically as time goes by after it is turned on, and finally reaches a stable value. Of course, this is determined by the characteristics of the LCD screen itself, which also brings some problems: [0004] If the initial brightness and contrast of the LCD TV are adjusted very high...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
Inventor 朱浩
Owner SHENZHEN TCL NEW-TECH CO LTD
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