Power-on time sequence control method for liquid crystal display equipment and television

Abstract

The invention discloses a power-on time sequence control method for liquid crystal display equipment and a television. The method comprises the following steps that: after the display equipment is switched on, a host system sends a backlight switch control signal of a positive pulse to a backlight control unit first before transmitting image data of a program to a logic control unit so as to drive a backlight lamp to start in advance for preheating, and then sends the backlight switch control signal for starting the backlight lamp formally to the backlight control unit according to a conventional time sequence so as to drive the backlight lamp to be lightened. Therefore, a starting process of the backlight lamp can be accelerated; the backlight lamp can reach a stable working state in advance before a display unit outputs a program image; the starting stability of a display picture is ensured; a picture display effect of a display terminal is improved; and the method is suitable to be popularized and applied in liquid crystal products such as liquid crystal televisions, liquid crystal displays or the like.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal display devices, and in particular relates to a control method for controlling the power-on sequence of each functional board in the liquid crystal display device and a liquid crystal television designed based on the power-on sequence control method. Background technique [0002] For current liquid crystal display products, such as liquid crystal televisions, liquid crystal displays, etc., they are generally equipped with main components such as main power supply, main system unit, logic control unit, backlight control unit and display unit. Wherein, the backlight lamp tube used in the backlight control unit is either an LCD lamp tube or an LED lamp tube. For these liquid crystal display products using LCD / LED modules, the logic control unit and backlight control unit generally follow the following steps during system power-on. figure 1 Timing of operation shown. That is, after the whole ...

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Problems solved by technology

In addition, it is difficult to ensure that the characteristics of each lamp assembled in the same module are consistent, which will cause the LCD / LED module to work in an unstable state at the moment of power-on, resulting in an unstable brightness state of the display screen

Since the LCD / LED module is controlled to start and run according to the current power-on sequence, it will take a long time for it to reach a stable state. Therefore, it is easy to cause the TV screen to be unstable during the power-on process.

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