The working principles of the lcd screen drive
Detailed maintenance techniques
Basic concepts and functional positioning of the logical board
Lcd screen drive, commonly referred to in industry as a logical board (lcd)
Tcon
) is connected numbers
Signal processing main panel and core hub components of lcd panels. As a display system
Nervous center
The logical board has the dual function of signal conversion and driver control. In terms of technical architecture, the substance of the logical board
It's an embedded system that combines special algorithms and hardware circuits and contains internal formatting models
Key subsystems such as block, time sequence control units and power management systems。
In the signal processing process, the logboard is receiving from the digital signal processing panel
Lvds
(low pressure differential)
) data stream, which contains
Rgb
Colour information, sync clock signals and display control command iii
Large signals. Convert these numbers into liquid crystal panels through the processing of specially integrated circuits on board yeah
Recognizes the row drive signal. Specifically, the logboard needs to complete signal decomposition, time sequencing, greyscale
A series of complex processes, such as correction, eventually produce a dynamic waveform that accurately controls the deflection of liquid crystal molecules。
Of particular note, the logical panels produced by different manufacturers are achieved in signal processing algorithms and hardware. Let's go
There are significant differences. This is mainly due to the unique optimization of the drive characteristics of lcd by panels
Programme. Therefore, in the actual maintenance work, it is important to fully recognize the non-universal character of the logboard and ensure that
The replacement component matches the parameters of the original panel。
