The design of LED display column driver chip based on control serial transmission

Since the traditional column driver chip has the problem of low transmission efficiency when it adopts the serial mode to transmit data row by row and column by column, this paper designs a column driver chip based on the control serial transmission. The chip combines the characteristics of serial transmission and parallel transmission mode. Based on the JXI5020 column driver chip, the control data shift register and the control data processor are added to serialize the control signal for subspace addressing, so as to realize the subspace scanning based on parallel transmission in a serial mode. The chip breaks the limit of data transmission in serial mode, reduces the time redundancy and improves the efficiency of data transmission. The correctness of the drive chip is verified by setting up the LED scanning drive system and its simulation verification platform. Compared with JXI5020, the driver chip designed in this paper can reduce the redundancy rate to 5.9% without brightness loss, effectively reducing the number of cell panel signal interfaces.