Abstract: The present invention relates to a color LCOS display chip and the drive and control method thereof. With new structure design and drive and control method, the video signal nonlinear correcting chip, display drive signal control chip and other high cost special chips which are used in conventional control and drive circuit are abandoned. Multiple systems are integrated in a single chip to save PCB required for combination of multi-system chips, which leads to a lower production cost. The weight and size of control and drive circuit are reduced due to fewer integrated circuit chips and save of PCB. Power consumption is reduced without nonlinear correcting chips and display drive signal control chips. With the finite state machine (FSM) Scheduler as the core of digital signal processing module, the voltage coding value could be adjusted as per nonlinear characteristics of different crystal materials so as to achieve an optimal nonlinear correcting performance, which enhances the universality of the chip.

Abstract: In the field of a liquid crystal on silicon (LCoS) display, a charge sharing system and a charge sharing method of an LCoS display are provided. The system includes: a column driving circuit, a row driving circuit, a pixel matrix, a control circuit, a gamma reference voltage circuit, and a first switching module. The column driving circuit includes a second switching module, a buffer, a shift register, a latch, and a digital-to-analog (D/A) converter. The second switching module is serially connected between the D/A converter and the buffer. The control circuit simultaneously outputs a signal for controlling turn-off of the buffer, a signal for controlling turn-off of a switch in the second switching module, and a signal for controlling turn-off of the gamma reference voltage circuit. The control circuit outputs a signal for controlling turn-on of a switch in the first switching module. The control circuit outputs a signal for controlling the row driving circuit.