Control circuit and control method for liquid crystal pixels

A control circuit for liquid crystal pixels, characterized by comprising a preset charging module (1), a second-order programming module (2) and a first-order programming module (3) which are connected in sequence;

• the preset charging module (1) is used for charging a liquid crystal pixel capacitor through a high level, and presetting a liquid crystal pixel to a high level state;
• the second-order programming module (2) realizes discharge of the preset charging module (1) according to programming data of the first-order programming module (3), so that a charge of the preset charging module reaches a maintenance voltage required by display of an image by the liquid crystal pixel;
• the first-order programming module (3) is configured to receive and store a charge transmitted from an external control unit for display of a next frame image:
• wherein, the preset charging module (1) comprises the liquid crystal pixel capacitor Cls, one end of the liquid crystal pixel capacitor Cls is connected with a reference voltage of a liquid crystal screen, and another end is connected with the second-order programming module (2);
• the second-order programming module (2) comprises a dual-gate transistor T4, one end of the liquid crystal pixel capacitor Cls is connected with the reference voltage of the liquid crystal screen, and another end is connected with a drain of the dual-gate transistor T4:
• the first-order programming module (3) comprises a first transistor T1, a gate of the first transistor T1 is configured to couple to an external gate driver, and a source of the first transistor T1 is configured to couple to an external source driver;
• a source of the dual-gate transistor T4 is coupled to a first synchronization signal Vst1, one gate of the dual-gate transistor T4 is coupled to a second synchronization signal Vst2, and another gate is coupled to the first transistor T1.