Display Panel Sub-Pixel Slit Design for Transmittance Uniformity
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Solution Overview
Problem
The challenge in display technology is to minimize the adverse effects of differing aperture ratios between red, green, and blue sub-pixels, which affect image quality by causing color shifts and transmittance differences.
Innovation Solution
The solution involves a display panel design where sub-pixel units have varying opening region sizes and slit configurations on the first electrode, along with differences in liquid crystal layer thickness and alignment layer pretilt angles, to adjust transmittance and aperture ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sub-pixels are designed with different aperture ratios to optimize display characteristics, then display performance can be improved, but transmittance differences between sub-pixels increase causing color shifts and image quality degradation
Solution Approach 1:
The patent applies local quality by introducing slits at specific locations on the first electrode within sub-pixels that have larger aperture ratios. These slits locally reduce the light transmission area, thereby adjusting the transmittance of individual sub-pixels to achieve uniform overall transmittance across all sub-pixel types while maintaining their different aperture ratio designs.
Solution Approach 2:
The patent changes the physical parameters of the first electrode by adding slits with specific dimensions and positions. By adjusting the slit width, length, and location, the effective transmittance of sub-pixels is modified to compensate for aperture ratio differences, achieving uniform light transmission across red, green, and blue sub-pixels.
2Illumination intensity
If the opening region size of sub-pixels is increased to improve light transmission, then transmittance increases, but the aperture ratio difference between sub-pixels becomes more significant
Solution Approach 1:
The patent introduces slits as localized modifications to the first electrode in specific sub-pixels. These slits create local light-blocking regions that reduce the effective transmittance of sub-pixels with larger opening regions, thereby balancing the overall light transmission across different sub-pixel types while allowing them to maintain their optimized aperture ratios.
Solution Approach 2:
The patent employs asymmetric design by placing slits of different dimensions and positions on the first electrode of different sub-pixel types. This asymmetric modification allows each sub-pixel type to have customized transmittance adjustment, compensating for their inherent aperture ratio differences and achieving uniform light transmission.
Data Source
AI summary
A display panel including a plurality of sub-pixel units disposed on a first base substrate is provided, wherein a size of an opening region of a first sub-pixel unit along a first direction is greater than that of a second sub-pixel unit; wherein at least one of the sub-pixel units includes a first electrode provided with at least one slit extending along the first direction, and an orthographic projection of the slit on the first base substrate is located within a range of an orthographic projection of the opening region of the sub-pixel unit on the first base substrate; and wherein a size of the slit in the first sub-pixel unit along a second direction intersecting the first direction is smaller than that in the second sub-pixel unit. A display device is further provided.