Shift register, grid driving circuit and display device

Abstract

The invention discloses a shift register, a grid driving circuit and a display device. The shift register is mainly characterized in that the shift register forwardly outputs output signals of each stage of shift register unit through a signal output terminal of each stage of shift register unit according to forward scanning signals, and reversely outputs output signals of each stage of shift register unit through the signal output terminal of each stage of shift register unit according to reverse scanning signals; each stage of shift register unit comprises a forward scanning switch module used for connecting a pull-up driving module under the control of the forward scanning signals, outputting first signals to a pull-up node and outputting second signals to a second pull-down module, a reverse scanning switch module used for connecting the pull-up driving module under the control of the reverse scanning signals, outputting the second signals to the pull-up node and outputting the first signals to the second pull-down module, the pull-up driving module, a pull-up module, a pull-down driving module, a first pull-down module and the second pull-down module. The forward scanning switch module and the reverse scanning switch module are utilized to control different signals to be input into different modules, so that forward scanning can be realized.

Description

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AI Technical Summary

Benefits of technology

This patented technology allows for two different modes of operation: one mode called normal scans where both directions can be controlled by an upward or downward movement (forward/back) button while another mode called backscattering involves controlling only certain parts of the image being displayed without actually shifting them around during display time. By doing this, it becomes possible to achieve full duplex displays with improved resolution compared to traditional methods like rasterization techniques.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the performance of thin film transistor liquid crystal displays (TFT LCDs) with shifting registers due to their high costs associated therewith. Current designs require two stages for each stage, which means they have limitations such as requiring twice or more time during fabrication processes compared to single level CMOS circuits.

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