Protrusion Structures for Camera Holes in Liquid Crystal Displays
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Solution Overview
Problem
In liquid crystal display panels, the difference in thickness between through hole regions and the liquid crystal layer causes interference patterns, affecting display quality.
Innovation Solution
The implementation of protrusions on the array and color filter substrates, with corresponding through holes in optical functional layers, allows for increased light transmission and reduced deformation, improving display quality by matching the thickness of the region where camera and sensor devices are located.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If through hole technologies are used to form camera or sensing holes on the display area, then the screen-to-body ratio is greatly increased, but interference patterns are generated due to thickness differences between the through hole region and the liquid crystal layer
Solution Approach 1:
The patent applies local quality by creating a protrusion structure at the through hole region that differs from the surrounding flat display area. This localized structural modification changes the thickness distribution specifically where needed, allowing the through hole function to be maintained while eliminating the interference pattern problem in that local region.
Solution Approach 2:
The patent transitions from a two-dimensional flat display structure to a three-dimensional structure with a protrusion. By adding the height dimension and creating a raised region, the patent simultaneously achieves light transmission for camera/sensor functions and maintains uniform liquid crystal layer thickness, thereby solving the interference pattern issue while preserving the screen-to-body ratio improvement.
2Length of stationary object
If the thickness of the through hole region is reduced to increase screen-to-body ratio, then more space is available for functional devices, but the liquid crystal layer thickness becomes non-uniform causing display quality degradation
Solution Approach 1:
Instead of simply reducing thickness in the through hole region, the patent adds height in the vertical dimension by creating a protrusion. This allows the liquid crystal layer to maintain its standard thickness over the protrusion surface, ensuring uniformity and display quality while still providing reduced thickness in the recessed through hole areas for device integration.
Solution Approach 2:
The patent applies different thickness characteristics to different regions: the protrusion region maintains standard liquid crystal layer thickness for display quality, while the recessed through hole regions provide reduced thickness for functional device placement. This localized differentiation resolves the contradiction between thickness reduction and uniformity maintenance.
Data Source
AI summary
A liquid crystal display panel and a substrate manufacturing method are provided. The liquid crystal display panel includes an array substrate, a color filter substrate, and a liquid crystal layer disposed between the array substrate and the color filter substrate. A first protrusion is disposed on a surface of the array substrate away from the liquid crystal layer, a second protrusion is disposed on a surface of the color filter substrate away from the liquid crystal layer, and the first protrusion is opposite to the second protrusion.