Display Panel Drive Circuit Simplification via Color-Grouped Switching
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Solution Overview
Problem
Conventional display panels with irregular pixel arrangements to improve display resolution complicate the peripheral drive circuit, leading to a complex structure that affects the display effect, particularly causing issues like mura problems during screen tapping.
Innovation Solution
A display panel design where light-emitting units in multiple sub-pixels form a pixel array with columns corresponding to different colors, and drive switches in the drive array are connected such that those in the same column drive light-emitting units of the same color, simplifying the peripheral drive circuit by reducing the number of switch elements and signal lines needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If irregular pixel arrangement is used to improve display resolution, then display resolution is improved, but peripheral drive circuit structure becomes complicated
Solution Approach 1:
The pixel array is segmented into multiple pixel columns, where each pixel column contains light-emitting units of different colors arranged vertically. This segmentation allows the drive array to be organized into drive columns that can independently control specific color channels, simplifying the peripheral drive circuit by reducing the number of data lines needed compared to a fully irregular arrangement.
Solution Approach 2:
Different regions of the pixel array have different structural characteristics. Specifically, pixel columns are organized such that light-emitting units of the same color within a column share common drive control, while adjacent columns may have different color arrangements. This local quality approach allows optimization of drive circuit complexity in specific regions while maintaining high display resolution overall.
2Measurement precision
If multiple data lines are provided for each drive column to support different colors, then display resolution is maintained, but peripheral drive circuit complexity increases
Solution Approach 1:
Multiple light-emitting units of the same color within a pixel column are merged under a common drive control structure. The drive switches in each drive column are configured to control light-emitting units of the same color, allowing these units to share data lines and reducing the total number of data lines required in the peripheral drive circuit.
Solution Approach 2:
The drive switches in the drive array are designed with multi-functionality, where each drive switch can control light-emitting units of a specific color across multiple pixel rows. This universal control approach reduces the number of dedicated drive circuits needed, simplifying the peripheral drive circuit while maintaining the ability to drive high-resolution displays.
Data Source
AI summary
The present application provides a display panel and a display device. The display panel includes a plurality of sub-pixels. Each sub-pixel includes a light-emitting unit and a drive switch electrically connected to a first electrode of the light-emitting unit. The light-emitting units in the multiple sub-pixels form a pixel array. Multiple light-emitting units in at least one pixel column of the pixel array correspond to sub-pixels of at least two colors. The drive switches in the multiple sub-pixels form a drive array. In the drive array, in drive columns correspondingly connected to the at least one pixel column, multiple drive switches in at least one drive column drive-control light-emitting units of the same color. Thus, the corresponding drive column can be connected to a peripheral drive circuit by using only one switch element.