Shifting register as well as drive circuit and display device using said shifting register

Abstract

The invention discloses a shift register and a driving circuit and a display device adopting the register. The shift register comprises a first commuting component and a second commuting component, and a first, second, third and fourth transistors. First source electrodes / drain electrodes of the first, second and third transistors respectively receive a common potential. Grids of the first and third transistors and a second source electrode / drain electrode of the second transistor are respectively coupled with a second terminal of the second commuting component. Grids of the second and fourth transistors and the second source electrode / drain electrode of the first transistor are respectively coupled with the second terminal of the first commuting component. The first source electrode / drain electrode of the fourth transistor is coupled with the second source electrode / drain electrode of the third transistor and the first terminal of the first commuting component receives input signals. A first terminal of the second commuting component receives a first clock impulse signal and a second source electrode / drain electrode of the fourth transistor receives a second clock impulse signal.

Description

technical field [0001] The present invention relates to a shift register, and in particular to a shift register which reduces the number of clock pulse control signals, a driving circuit and a display device using the shift register. Background technique [0002] At present, the thin-film transistor (TFT) used in most liquid crystal displays (LCD) is made of amorphous silicon (a-Si: H), so in large In the design of the liquid crystal display panel, a driving integrated circuit is added around the liquid crystal display panel. Use the gate voltage of the thin-film transistor to control the current between the source and the drain, turn the thin-film transistor on or off, and connect or disconnect it from the source of the driving signal at an appropriate time, so that each display pixel can operate independently, which is not easy Influenced by other display pixels. [0003] The driving circuit of the liquid crystal display, such as the scanning driving circuit and the data...

AI Technical Summary

Problems solved by technology

However, designing the driving circuit on the glass substrate of the liquid crystal display panel is easily limited by the poor characteristics of the transistor element, such as low mobility, threshold voltage shift, and large leakage current, etc... , so when designing the driving circuit on the liquid crystal display panel, it is necessary to select the components with special consideration of the above problems

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