The working principles of the lcd screen drive
Detailed maintenance techniques
Chapter i
Basic concepts and functional positioning of the logical board
In the overall structure of the lcd tv, the screen drive (usually referred to as a logical board or
Tcon
Fake
It's a crucial role. As the central bridge connecting the digital signal processing panel to the lcd screen
The main function of the panel is to transfer the front-end panel
Lvds
(low pressure differential signal) image data conversion
A directly identifiable driver signal for the lcd screen. This conversion involves complex signal processing and voltage
Control mechanisms are key to ensuring that the lcd screen works properly。
In terms of technical architecture, the logboard is actually an intelligence that brings together specialized software and solidware programs
Component. It contains specialized modules, such as a horizontal and vertical migration register, which are embedded
Flash
Storage achieves functional control. It's worth noting that even equipment manufacturers can't fix it easily
The modification of these solidification procedures reflects the highly specialized and stable design requirements of the logical board。
The logboard performs three main core tasks in the signal processing process: first, the input signal
Decoding and restructuring. These input signals usually include
Rgb
Data signals, clock signals and various control letters
No.; the next is the precise control signal required to generate a shift in lcd molecules; the last is to generate the driver lcd screens
Multiple sets of specific voltage required. The co-working of these features finally made the image on the lcd screen
Show exactly。
Chapter ii
The circuit structure of the logboard and the power supply system
2. 1
Power supply structure
