Shift Register Unit Signal Integration for Display Reliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The working reliability of pixel circuits in display devices is low due to disturbances in signals on the gate line caused by the need to output driving signals at different potentials to the same gate line, which affects the control of the pixel circuit.
Innovation Solution
A shift register unit is provided, comprising a shift circuit and a signal integrated circuit that outputs power control signals to different output ends during specific time periods, integrating the gate driving signal and sensing scan signal to ensure reliable operation and external compensation, thereby improving the working reliability of the pixel circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If driving signals at different potentials are output to the same gate line, then the pixel circuit can be controlled, but signal disturbances occur on the gate line reducing working reliability
Solution Approach 1:
The patent divides the output signal into two separate time periods: first time period for outputting power control signal to first output end, and second time period for outputting power control signal to second output end. This temporal segmentation eliminates signal disturbance on the gate line while maintaining the ability to control pixel circuits through different potentials at different times.
Solution Approach 2:
The patent implements dynamic output control where the shift circuit dynamically switches between outputting to the first output end or second output end based on the current time period. The output end is determined dynamically: during first time period, output to first output end; during second time period, output to second output end. This dynamic approach allows the system to adapt its output configuration to avoid signal conflicts.
2Reliability
If signal integration is implemented to improve working reliability, then pixel circuit reliability improves, but device complexity increases
Solution Approach 1:
The shift circuit is designed with multi-functionality to perform both shifting operations and signal integration functions. The circuit integrates the power control signal with output signals from first and second output ends to generate the third output signal, eliminating the need for separate dedicated integration circuits and reducing overall device complexity while maintaining reliability improvements.
Solution Approach 2:
The patent merges the power control signal output function with the signal integration function into a single unified process. The shift circuit combines the power control signal received from the power control end with output signals from both output ends to produce the integrated third output signal. This merging approach simplifies the circuit architecture while achieving the reliability benefits of signal integration.
Data Source
AI summary
A shift register unit, a driving method, a gate driving circuit, and a display device are disclosed. The shift register unit includes: a shift circuit, used to output, to a first output end during a first time period, a power control signal, and output the power control signal to a second output end during a second time period; and a signal integrated circuit, used to output the power control signal to a third output end in response to the power control signal and a first output signal, output the power control signal to the third output end in response to the power control signal and a second output signal, and output, to the third output end at times other than the first and second time period in response to the power control signal, the first output signal and the second output signal, a first pull-down power signal.