A driving device of a liquid crystal display and a reset method thereof
A technology for a liquid crystal display and a driving device, applied in the field of display screens, can solve the problems of being difficult to find, prone to reset failure, affecting manufacturing cost and output, etc., and achieve the effects of improving reliability, avoiding abnormal display, and preventing reset failure.
Active Publication Date: 2020-06-05
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology
[0004] Due to the design flaws of the current TCON, reset failure is prone to occur during the reset process. This kind of problem is difficult to find in the design and manufacturing stage. Changing the structure of the TCON rashly will affect the manufacturing cost and output.
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Embodiment Construction
[0028] see figure 1 , figure 1 It is a schematic structural diagram of the control circuit of the driving device of the liquid crystal display of the present invention. The driving device of the liquid crystal display includes: a microprocessor 101, a timing controller 102, a power management unit 103 and a switching circuit 104. in,
[0029] A microprocessor (SOC, System on Chip, chip-level system) is an integrated circuit with a dedicated target, which contains a complete system and has all the content of embedded software.
[0030] The timing controller (TCON, timer controller) is the core of the entire drive device. This circuit converts the LVDS signal sent by the front end through logic conversion to generate an RSDS (Relative Sequential Data Set, relative sequence data set) image data signal, and the rear-stage drive Various control signals required by the circuit. Among them, the LVDS signal (including the RGB primary color signal of the image, line synchronization,...
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The invention discloses a driving device of a liquid crystal display and a resetting method of the driving device. The driving device of the liquid crystal display comprises a microprocessor, a time sequence controller, a switch circuit and a power supply management unit, the microprocessor is used for outputting a reset signal, outputting a power supply signal, and transmitting the LVDS signal, sending a reset inquiry instruction and receiving a feedback signal corresponding to the reset inquiry instruction; the time sequence controller is used for receiving and converting the LVDS signal, and is used for receiving a reset query instruction and sending a feedback signal corresponding to the reset query instruction; the microprocessor is used for outputting a reset signal to enable the time sequence controller to reset when the microprocessor works, and sending the reset inquiry instruction to the time sequence controller so as to determine whether the time sequence controller finishesresetting, and reset signals are reset when the time sequence controller is not reset by the microprocessor. By means of the mode, the problem of failure of reset of the time sequence controller is effectively avoided, and meanwhile the problems of abnormal display in the screen opening process are avoided.
Description
technical field [0001] The invention relates to the technical field of display screens, in particular to a driving device of a liquid crystal display and a reset method thereof. Background technique [0002] LCD (Liquid Crystal Display, liquid crystal display) can be divided into two industrial groups with upstream and downstream relations, liquid crystal module and system integration. The liquid crystal module factory integrates circuit components such as flat panel and TCON (timer controller, timing controller), produces liquid crystal modules with specific interface specifications and functions, and provides them to manufacturers; manufacturers use components provided by various chip manufacturers, through LVDS ( Low-Voltage Differential Signaling, low-voltage differential signal) and other interfaces are connected to the LCD module to form a complete LCD product such as TV, display, computer, etc. [0003] It is precisely because of the definition of this industrial str...
Claims
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IPC IPC(8): G09G3/36
CPCG09G3/36
Inventor 李文芳
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD