Shift Register Unit Multi-Signal Output for Display Devices
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Solution Overview
Problem
The existing shift register units in display devices require a complex structure and occupy significant space due to the need for cascading multiple stages to provide control signals for driving pixel cells, as each stage only outputs one control signal.
Innovation Solution
A shift register unit is designed with an input module, reset module, pull-down module, output pull-down control module, and output control module, which collectively provide three control signals - power supply enable signal, power supply signal, and gate drive signal - to simplify the structure and reduce space by enabling simultaneous output of multiple control signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple stages of shift register units are cascaded to provide control signals for driving pixel cells, then the control capability is improved, but the structure becomes complex and the space occupied increases
Solution Approach 1:
The shift register unit is designed to perform multiple functions within a single stage. It can output multiple control signals (gate drive signal, power supply enable signal, power supply signal) simultaneously, eliminating the need for cascading multiple single-function stages. This multi-functional design directly resolves the contradiction by providing comprehensive control capability without increasing structural complexity.
2Adaptability or versatility
If multiple stages of shift register units are cascaded to provide control signals for driving pixel cells, then the control capability is improved, but the space occupied increases
Solution Approach 1:
The invention merges the functions of multiple cascaded shift register stages into a single integrated unit. By combining the output of gate drive signals, power supply enable signals, and power supply signals in one stage, the physical area required is significantly reduced compared to cascading multiple separate stages, thus resolving the space occupation issue while maintaining control capability.
3Device complexity
If only one control signal is provided per stage of shift register unit, then the structure remains simple, but the space occupied increases due to required cascading
Solution Approach 1:
The shift register unit is designed to perform multiple functions within a single stage. It can output multiple control signals (gate drive signal, power supply enable signal, power supply signal) simultaneously, eliminating the need for cascading multiple single-function stages. This multi-functional design directly resolves the contradiction by providing comprehensive control capability without increasing structural complexity.
Data Source
AI summary
The present disclosure discloses a shift register unit and a driving method thereof, a shift register circuit and a display device, and relates to the field of display technology, in order to solve problems of the conventional shift register that it has a complex structure, and occupies a too larger space. The shift register unit comprises an input module for receiving a signal of an input signal terminal and a signal of a high level terminal, a reset module for resetting an output terminal of the shift register unit and a pull-up control node, a pull-down module for discharging the pull-up control node and the output terminal of the shift register unit, a pull-down control module for generating a power supply enable signal and a power supply signal, and an output control module for generating a gate drive signal and outputting the power supply enable signal, the power supply signal and the gate drive signal. The shift register unit provided by the present disclosure is applied to the display device.