Pixel circuit and driving method thereof, driving circuit, and display apparatus
A technology for pixel circuits and driving circuits, applied in static indicators, instruments, etc., can solve the problems of driving circuits, long debugging cycles, and complex algorithms of TFT arrays with large logic power consumption, and achieve easy implementation, low power consumption, and speed up. The effect of liquid crystal response
Active Publication Date: 2016-03-16
BOE TECH GRP CO LTD +1
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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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[0051] The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. In the drawings, the same reference numerals refer to the same elements or parts, and thus, their descriptions will be omitted.
[0052] figure 1 Shown is a schematic diagram of the basic structure of a pixel circuit according to an embodiment of the present invention. In this example, figure 1 A pixel circuit 100 is schematically shown, and the pixel circuit 100 mainly includes a capacitor C and transistors T1-T3. The pixel circuit 100 is used to form a pixel circuit array, for example, a pixel circui...
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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...
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IPC IPC(8): G09G3/36
CPCG09G3/3611G09G3/3648G09G3/3659G09G2320/0276G09G3/3688G09G3/2014G09G3/3655G09G2310/0251G09G2330/021G09G3/3696
Inventor 张衎张斌陈鹏名王光兴张强董殿正
Owner BOE TECH GRP CO LTD