Pixel circuit and driving method thereof, driving circuit, and display apparatus

Abstract

The invention provides a pixel circuit and a driving method thereof, a driving circuit, and a display apparatus, and belongs to the field of a pixel circuit driving technology. The pixel circuit comprises a capacitor, a capacitance charging transistor, a first capacitance discharge transistor and a second capacitance discharge transistor, wherein the capacitor is charged to have first voltages greater than pixel voltages when the capacitance charging transistor is unlatched; and the capacitor, the first capacitance discharge transistor and the second capacitance discharge transistor are connected in series to form a discharge circuit, and the capacitor is discharged so as to enable voltages at the two ends of the capacitor to be reduced to the pixel voltages from the first voltages when the first capacitance discharge transistor and the second capacitance discharge transistor are unlatched. The driving circuit of a pixel circuit array of the pixel circuit does not require corresponding arrangement of a Gamma resistor, the structure is simple, and the driving power consumption is low.

Description

technical field [0001] The invention belongs to the technical field of pixel circuit driving, and relates to a pixel circuit and a driving method thereof, a driving circuit and a display device of a pixel circuit array formed based on the pixel circuit. Background technique [0002] The glass substrate of the display is provided with a TFT array. The TFT array is generally composed of several pixel circuits arranged in rows and columns. Corresponding pixel circuits are provided for each pixel. The pixel circuits provide corresponding pixel voltages to control the display of each pixel. [0003] Existing pixel circuits generally have a 1T1C structure, which is formed based on a transistor (such as TFT) plus a capacitor. The transistor T is controlled to be turned on or off by the gate signal (Gate) provided by the gate driver, and the capacitor C is driven by the source. The controller performs charging based on the data signal (Data), so as to reach a certain pixel voltage v...

AI Technical Summary

Problems solved by technology

[0005] The biggest problem of driving this kind of pixel circuit is that it will lead to a large logic power consumption and a more complex driving circuit of the TFT array; and, since the gray-scale voltage of RGB sub-pixels must be shared, the cost of realizing 8-bit voltage value control Higher, and the algorithm is complex and the debugging cycle is long

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