Display Panel Sub-Pixel Grouping for Brightness Uniformity
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Solution Overview
Problem
Display panels with gate driver on array (GOA) circuits face issues of brightness differences between sub-pixels due to varying compensation times of drive TFTs, leading to poor display effects.
Innovation Solution
The display panel is structured with sub-pixel groups of the same color connected to the same row of drive terminals, reducing brightness differences by dividing sub-pixels into groups based on color and arranging them correspondingly with drive terminals, thus simplifying the drive circuit and connection structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sub-pixels are arranged in conventional rows with mixed colors connected to different drive terminals, then the drive circuit can cover more sub-pixels, but brightness differences occur due to varying compensation times of drive TFTs
Solution Approach 1:
The patent segments sub-pixels by color into separate groups (red sub-pixel groups, green sub-pixel groups, blue sub-pixel groups) rather than mixing colors in conventional rows. Each color group is connected to dedicated drive terminals, allowing uniform compensation timing within each color group while maintaining comprehensive drive circuit coverage across all sub-pixels.
2Device complexity
If sub-pixels of the same color are connected to different drive terminals, then more drive terminals can be utilized, but brightness inconsistencies arise from varying compensation times
Solution Approach 1:
The patent divides sub-pixels into separate color-based groups (red, green, blue) where each group is connected to dedicated drive terminals. This segmentation ensures that all sub-pixels of the same color receive compensation signals at the same time, eliminating brightness inconsistencies while still utilizing multiple drive terminals effectively for comprehensive coverage.
Solution Approach 2:
The patent applies different connection strategies to different color groups. Each color group (red, green, blue) has its own dedicated drive terminals and compensation timing, allowing local optimization of brightness uniformity for each color while maintaining overall system efficiency and drive terminal utilization.
3Illumination intensity
If additional connection lines and mask boards are added to correct brightness differences, then display quality can be improved, but manufacturing complexity and costs increase
Solution Approach 1:
The patent implements brightness uniformity correction at the design and fabrication stage by organizing sub-pixels into color-based groups with dedicated drive terminals. This preliminary structuring ensures uniform compensation timing without requiring additional correction layers, mask boards, or complex post-manufacturing adjustments, thereby maintaining ease of manufacture while achieving high display quality.
Data Source
AI summary
Disclosed is a display panel. The display panel includes: a base substrate, a drive circuit, disposed on the base substrate and including a plurality of drive units, the drive units including n rows of drive terminals; a plurality of sub-pixel clusters, disposed on the base substrate, wherein each of the sub-pixel clusters includes n rows of sub-pixels of m colors, the n rows of sub-pixels form n sub-pixel groups, each of the sub-pixel groups includes sub-pixels of at least one color, the n sub-pixel groups correspond to the n rows of drive terminals respectively, and the sub-pixels in the sub-pixel groups are electrically connected to the corresponding drive terminals.