Shift Register Unit With Dual Circuits For Output Potential Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing shift register units in display technologies have limited flexibility in controlling the potential of the output terminal, leading to inefficiencies in driving pixel units and displaying images.
Innovation Solution
The proposed solution involves a display panel with a shift register unit comprising a first and second shift circuit, where the second shift circuit is coupled to an enable control terminal, a second power terminal, and an output terminal, allowing the second power terminal to be controlled for conduction or non-conduction based on the enable control signal, thereby enhancing the flexibility in controlling the output terminal potential.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional shift register unit is used with limited control terminals, then the device complexity is reduced, but the flexibility in controlling the output terminal potential deteriorates
Solution Approach 1:
The shift register unit is divided into a first shift circuit and a second shift circuit with distinct functions. The first shift circuit handles basic shifting operations while the second shift circuit manages output control and power terminal switching. This segmentation allows independent optimization of each circuit's control capabilities, improving overall flexibility without proportionally increasing complexity.
Solution Approach 2:
The patent introduces dynamic control of the output terminal potential through the second shift circuit, which can switch between different power terminals (first power terminal and second power terminal) based on operational requirements. This dynamic switching capability enables the circuit to adapt its output characteristics during different phases of operation, enhancing flexibility while maintaining a relatively compact structure.
2Reliability
If the second power terminal is always conducted with the output terminal, then the circuit structure is simplified, but the reliability of signal transmission during different phases deteriorates
Solution Approach 1:
The second shift circuit implements dynamic switching between the first power terminal and second power terminal based on the phase of operation. During the light-emitting phase, one power terminal is selected, while during the non-light-emitting phase, the other power terminal is selected. This dynamic power terminal selection ensures reliable signal transmission adapted to different operational requirements without requiring overly complex circuit structures.
Solution Approach 2:
The circuit operates in periodic phases (light-emitting phase and non-light-emitting phase), with the second shift circuit switching power terminals according to the phase timing. This periodic switching ensures that the appropriate power terminal is active during each phase, maintaining signal transmission reliability throughout the operational cycle while using a relatively simple switching mechanism.
Data Source
AI summary
Provided is a display panel. The display panel includes a substrate including a display region and a non-display region surrounding the display region; and a shift register unit, disposed in the non-display region; wherein the shift register unit includes a first shift circuit and a second shift circuit; wherein the first shift circuit is coupled to a first clock terminal, a second clock terminal, an input signal terminal, a first power terminal, a second power terminal, and a shift node; and the second shift circuit is coupled to the shift node, the first clock terminal, the second clock terminal, a third clock terminal, an enable control terminal, an output control terminal, the first power terminal, the second power terminal, and an output terminal.