Shift register circuit

Abstract

The invention provides a shift register circuit, which is suitable for driving an organic LED display panel. The shift register circuit comprises a plurality of circuit levels in series connection. Each circuit level comprises two shift registers and an enable signal for generating circuit. The shift register comprises two transistors, an input unit and a forbidden energy unit. The enable signal generates circuit, so that an enable signal can be generated based on the signal of the control end of the four transistors in the two shift registers. The shift register circuit is advantageous in that the circuit design of each circuit level is relatively simple; circuit size is relatively small; cost is relatively low.

Description

technical field [0001] The present invention relates to the technical field of displays, in particular to a shift register circuit suitable for driving an organic light emitting diode display panel. Background technique [0002] figure 1 A circuit structure of an OLED pixel in an OLED display panel is shown. Please refer to figure 1 , the organic light emitting diode pixel 100 is composed of transistors 102-112, capacitors 114-116 and an organic light-emitting diode 118, and the transistors 102-112 are all realized by P-type transistors. Furthermore, in figure 1 Among them, the symbol OVDD represents the power supply voltage, the symbol OVSS is the reference potential, the symbol VDATA is the data signal, the symbol VINT is the preset voltage, the symbols S1 and S2 are both scan signals, and the symbol EM is the enable signal. figure 2 The timing relationship between the scan signal S1, the scan signal S2 and the enable signal EM is shown. When driving the organic ligh...

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Problems solved by technology

[0003] However, since each circuit stage in the known shift register circuit requires at least fifty transistors for circuit design, each circuit stage is not only extremely complicated in circuit design, but also has a large circuit size and high cost.

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