Shift Register Voltage Stabilization for Partitioned Display Panels
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Solution Overview
Problem
Current display panels with partitioning and frequency division capabilities suffer from issues of dark or bright lines at junctions between different areas due to voltage fluctuations caused by capacitor interactions, affecting display uniformity.
Innovation Solution
A display panel with a driving circuit comprising N-level shift registers connected in cascade, featuring a first control part and a second control part with a control unit and a voltage stabilizing unit, where the second control part receives frequency and voltage signals to stabilize the output signal, preventing voltage fluctuations and maintaining consistent pixel operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If partitioning and frequency division are implemented in display panels, then power consumption is reduced, but dark or bright lines appear at junctions between different areas
Solution Approach 1:
A voltage stabilizing unit is introduced as an intermediary component between the control unit and the output signal line. This unit includes a capacitor connected in parallel with the output signal line, which acts as a mediator to smooth voltage fluctuations and eliminate dark or bright lines at junctions between different display areas with varying refresh rates
2Reliability
If voltage stabilization is implemented using capacitors, then display uniformity is improved, but voltage fluctuations occur due to capacitor interactions
Solution Approach 1:
The voltage stabilizing unit is applied locally at specific positions in the display panel, particularly at junctions between different areas. By placing capacitors at these critical locations rather than throughout the entire system, the solution addresses local voltage fluctuations without causing widespread voltage instability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents display issues such as dark or bright lines by stabilizing the output signal, ensuring consistent pixel operation and maintaining display quality across partitioned areas with varying refresh frequencies.
Implementation Method 1
a voltage stabilizing unit, where the second control part receives frequency and voltage signals to stabilize the output signal
Data Source
AI summary
Display panel and display device are provided. The display panel includes a driving circuit includes N-level shift registers connected in cascade with N≥2. A shift register of the N-level shift registers includes a first control part and a second control part. The first control part is electrically connected to the second control part. The first control part is configured to control a first output signal, and the first output signal of an i-th level shift register serves as an input signal of a j-th level shift register, where 1≤i≤N, and 1≤j≤N. The second control part includes a control unit and a first voltage stabilizing unit.