Auxiliary Black Matrix Layer for Display Panel Defect Reduction
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Solution Overview
Problem
Conventional display panels suffer from horizontal and vertical line defects due to uneven charging rates of odd-numbered and even-numbered gate lines, particularly exacerbated at low grayscale intensities, leading to deteriorated display quality in dual gate and gate-on-array configurations.
Innovation Solution
Incorporating an auxiliary black matrix layer that divides the aperture region of each subpixel into multiple sub-regions, allowing for enhanced resolution and reducing defects by ensuring consistent grayscale intensity across subpixel portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an auxiliary black matrix layer is added to divide the aperture region, then image resolution is enhanced and line defects are reduced, but device complexity increases
Solution Approach 1:
The aperture region of each subpixel is divided into multiple aperture sub-regions by the auxiliary black matrix layer. This segmentation allows each sub-region to be independently controlled by separate data lines, effectively increasing the resolution without requiring a complete redesign of the display structure.
Solution Approach 2:
The auxiliary black matrix layer serves multiple functions simultaneously: it divides the aperture region to enhance resolution, balances the grayscale intensity distribution to eliminate line defects, and maintains compatibility with existing dual gate and gate-on-array configurations.
2Manufacturing precision
If the aperture region is divided into multiple sub-regions, then grayscale intensity distribution is balanced, but manufacturing complexity increases
Solution Approach 1:
The aperture region is segmented into multiple sub-regions by the auxiliary black matrix layer, allowing for more precise control over light transmission in each sub-region. This enables better balancing of grayscale intensity distribution across the display panel.
Solution Approach 2:
Different aperture sub-regions can have different characteristics optimized for their specific functions. The auxiliary black matrix layer allows local optimization of light transmission properties while maintaining overall display performance.
Data Source
AI summary
The present application discloses a display panel having a plurality of gate lines and a plurality of data lines crossing over each other thereby defining an array of a plurality of subpixels along a first direction and a second direction in the display panel. The display panel includes a black matrix layer defining a plurality of subpixel areas corresponding to the plurality of subpixels; a plurality of pixel electrodes, each of which in one of the plurality of subpixels and having an aperture region; and an auxiliary black matrix layer dividing the aperture region into at least two aperture sub-regions separated by the auxiliary black matrix layer.