Shift Register Circuit for Display Panel Driving Signals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In active matrix organic light-emitting diode displays, uneven light emission occurs due to differences in electrical properties of driving transistors, requiring additional driving signals and complex wiring, which increases power consumption and complicates the layout of the display panel.
Innovation Solution
A shift register circuit and data processing circuit configuration that outputs first and second shift signals to provide gate driving and enable signals to pixel driving circuits, simplifying the arrangement of driving circuits and signal lines by cascading shift registers to form a gate driving circuit for the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If internal compensation of pixel driving circuit is designed to avoid display abnormalities, then display uniformity is improved, but device complexity and power consumption increase due to requiring more driving signals (Reset, Gate, and EM signals)
Solution Approach 1:
The patent combines multiple driving signals (Reset, Gate, and EM signals) into a single shift register output sequence. The shift register generates these signals sequentially through clock-driven shifts, merging what would traditionally require separate driving circuits and signal lines into one integrated component, thereby reducing device complexity while maintaining display uniformity through proper signal timing
Solution Approach 2:
The shift register is designed to perform multiple functions by generating different driving signals (Reset, Gate, EM) at different time slots. A single shift register component serves the purpose of what would traditionally require multiple dedicated driving circuits, reducing overall system complexity while providing all necessary signals for internal compensation to maintain display uniformity
2Manufacturing precision
If internal compensation of pixel driving circuit is designed to avoid display abnormalities, then display uniformity is improved, but power consumption increases due to requiring more driving signals and corresponding driving circuits
Solution Approach 1:
The patent merges multiple driving signal generation functions into a single shift register component that operates sequentially. By combining Reset, Gate, and EM signal generation into one time-division multiplexed output, the circuit reduces the number of active components and signal lines, thereby lowering power consumption while maintaining the functionality needed for internal compensation and display uniformity
Solution Approach 2:
The shift register serves as a universal signal generator that produces multiple driving signals (Reset, Gate, EM) through sequential clock cycles. This multi-functional approach eliminates the need for separate dedicated driving circuits for each signal, reducing overall power consumption while providing all necessary signals for internal compensation to ensure display uniformity
3Ease of operation
If corresponding driving circuits and signal lines are designed to provide driving signals, then driving functionality is improved, but wiring layout complexity increases
Solution Approach 1:
The patent merges multiple driving signal outputs into a single shift register interface. Instead of requiring separate signal lines for Reset, Gate, and EM signals, the shift register provides these signals sequentially through a single output terminal, dramatically simplifying the wiring layout while maintaining complete driving functionality for the pixel circuits
Solution Approach 2:
The shift register pre-generates and stores the timing information for all driving signals (Reset, Gate, EM) within its sequential output sequence. This preliminary organization of signal timing within the shift register eliminates the need for complex external wiring and control logic, simplifying the overall layout while ensuring proper driving functionality through the sequential signal generation
Data Source
AI summary
The disclosure relates to the field of display technology and proposes a shift register, a driving method thereof, a gate driving circuit, and a display panel. The shift register includes a shift register circuit and a data processing circuit. The shift register circuit is configured to output a first shift signal to a first output terminal. The data processing circuit is connected to the first output terminal and a second output terminal, and configured to output a second shift signal to the second output terminal according to the first shift signal of the first output terminal. The second shift signal can be used as other driving signals in the pixel driving circuit, thereby avoiding a need to provide additional driving circuits and signal lines corresponding to the driving signal.