Shared Compensation Circuit for High Pixel Density Display Panels
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Solution Overview
Problem
The complexity of pixel driving circuits in display panels due to the inclusion of compensation circuits hinders the achievement of high pixel density.
Innovation Solution
A display panel design with driving units comprising multiple rows and columns of pixel driving circuits and a compensation circuit that provides threshold compensation signals, allowing for efficient integration and connection of these circuits, reducing the layout space required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a compensation circuit is included in each pixel driving circuit, then threshold compensation can be provided to improve display quality, but the structure of the pixel driving circuit becomes complex and pixel density cannot be increased
Solution Approach 1:
The patent divides the compensation function into separate modules: a compensation circuit module that generates compensation signals and a pixel driving circuit module that receives these signals. This segmentation allows the compensation functionality to be provided without integrating the full compensation circuit into each pixel driving circuit, thereby reducing structural complexity while maintaining threshold compensation capability.
Solution Approach 2:
The compensation circuit is designed to serve multiple pixel driving circuits simultaneously. A single compensation circuit can provide compensation signals to multiple pixel driving circuits through shared signal lines, making the compensation circuit multi-functional and reducing the overall complexity of the display panel structure.
2Reliability
If a compensation circuit is integrated into each pixel driving circuit, then threshold compensation is achieved, but the layout space required increases and high pixel density cannot be achieved
Solution Approach 1:
The patent merges the compensation circuit functionality into a separate, shared module that serves multiple pixel driving circuits. By combining the compensation functions for multiple pixels into a single circuit module, the layout space required is significantly reduced compared to having individual compensation circuits for each pixel driving circuit.
Solution Approach 2:
The patent reorganizes the circuit layout by separating the compensation circuit from the pixel driving circuits in terms of functional modules. The compensation circuit is positioned in a different spatial arrangement, serving multiple pixel driving circuits through extended signal connections, thereby optimizing the use of layout space and enabling higher pixel density.
Data Source
AI summary
A display panel and a display device are disclosed. The display panel includes: a substrate and a plurality of driving units. The driving unit is located on one side of the substrate. The orthographic projections of multiple driving units on the substrate are distributed in an array along the row and column directions. The driving unit includes: n rows and m columns of pixel driving circuits and a compensation circuit, n and m are both positive integers greater than or equal to 1, and n+m is greater than or equal to 3; the compensation circuit is connected to the multiple pixel driving circuits in the same driving unit and configured to provide threshold compensation signals to the pixel driving circuits connected thereto.