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TV set LCD time sequence controlling method during open

A technology of LCD TV and boot sequence, applied in the direction of instruments, static indicators, etc., can solve the problems of unstable low-voltage differential signal, disordered clock signal, screen blurry, etc.

Inactive Publication Date: 2008-01-16
SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the low-voltage differential signal (LVDS signal) at the beginning of power-on is unstable, and the clock signal in the LVDS signal is disorderly. If it is not shielded and sent directly to the driver board of the LCD screen, the drive circuit of the LCD screen will be damaged. unable to work properly
When the driving circuit of the LCD screen cannot work normally, the LCD screen cannot receive normal and orderly data signals, and the phenomenon of screen "flower screen" will appear, that is, the entire screen is a variety of colored vertical bars that do not disappear, and cannot work normally. display image signal

Method used

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  • TV set LCD time sequence controlling method during open
  • TV set LCD time sequence controlling method during open
  • TV set LCD time sequence controlling method during open

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Embodiment Construction

[0009] The present invention will be described in further detail below through specific embodiments and in conjunction with the accompanying drawings. As shown in Figure 1, Q1 is an NPN triode; U2 is an enhanced P-channel FET; PLANE DRIVE is the driving circuit of the LCD display; PLANE INVERTER is the backlight module of the LCD display; CPU is the main control microprocessor; TSU6666 is a signal processing controller that can convert R, G, B signals into LVDS signals.

[0010] As shown in Figure 1 and Figure 3, after the power-on signal is sent, the main control microprocessor CPU outputs a high level to turn on the power supply of the driving circuit of the liquid crystal display, and after time T1, the power supply is basically stable. After the power supply is stable and after T2 time, the signal processing controller TSU6666 turns on the low-voltage differential (LVDS) signal output; within T5 time after turning on the LVDS signal output, the main control microprocessor ...

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Abstract

The invention discloses a TV LCD sequential control method when opening a terminal, which comprises the following steps: 1) when the main control microprocessor receives the signal of opening a terminal, it will send control signal to start the relative signal of LCD activation circuit; 2) the main control microprocessor starts the negative phototropic mode group power of LCD display after the LCD activation circuit receives the normal LVDS signal, which prevents the confused screen due to LVDS signal disorder.

Description

【Technical field】 [0001] The invention relates to a liquid crystal television, in particular to a method for controlling the start-up sequence of the liquid crystal television. 【Background technique】 [0002] When the current LCD TV is turned on, power is usually supplied to the backlight module and the driving circuit of the LCD screen at the same time. However, the low-voltage differential signal (LVDS signal) at the beginning of power-on is unstable, and the clock signal in the LVDS signal is disorderly. If it is not shielded and sent directly to the driver board of the LCD screen, the drive circuit of the LCD screen will be damaged. unable to work properly. When the driving circuit of the LCD screen cannot work normally, the LCD screen cannot receive normal and orderly data signals, and the phenomenon of screen "flower screen" will appear, that is, the entire screen is a variety of colored vertical bars that do not disappear, and cannot work normally. Displays the imag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G09G3/20G02F1/133
Inventor 王东白骥
Owner SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD