Display Panel Camera Hole Laser Ablation for Color-Accurate Imaging
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Solution Overview
Problem
The presence of alignment film and liquid crystal layers at the camera hole in display panels causes a difference in refractive index and color differences, affecting the imaging quality of front cameras due to processes like alignment film printing and liquid crystal alignment.
Innovation Solution
The method involves using laser treatment to create light transmission holes in the alignment film and liquid crystal layers at the camera hole positions, reducing the difference in ambient light entry and improving camera imaging quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If alignment film layer and liquid crystal layer are present at camera hole position, then liquid crystal alignment function is maintained, but refractive index difference causes color difference affecting camera imaging quality
Solution Approach 1:
The patent divides the alignment film layer and liquid crystal layer into two separate processing zones: a first light transmission hole is formed in the alignment film layer at the camera hole position, and a second light transmission hole is formed in the liquid crystal layer at the same position. This segmentation allows light to pass through both layers without encountering refractive index variations, thereby eliminating color differences while maintaining the structural integrity and alignment function of both layers in other regions.
2Manufacturing precision
If laser treatment is applied to remove alignment film and liquid crystal at camera hole, then light transmission uniformity is improved, but additional processing steps are added
Solution Approach 1:
The patent replaces traditional mechanical or chemical methods of creating light transmission holes with laser treatment. The laser beam precisely ablates the alignment film layer and liquid crystal layer to form the first and second light transmission holes, respectively. This substitution achieves superior light transmission uniformity and edge precision while reducing the need for multiple mechanical processing steps, thereby actually simplifying the overall manufacturing process despite the advanced technology involved.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances the imaging quality of the front camera by minimizing light transmission differences at the camera hole, ensuring consistent light entry and improved display performance.
Implementation Method 1
performing laser treatment to a position of the alignment film layer corresponding to a position of the camera hole to obtain a first light transmission hole; and performing laser treatment to a position of the liquid crystal layer corresponding to a position of the camera hole to obtain a second light transmission hole
Data Source
AI summary
The invention provides a method of manufacturing a display panel and the display panel. The display panel is applied to a display device having a camera, and the display panel includes an alignment film layer, a liquid crystal layer, and a camera hole. The method includes: performing laser treatment to the alignment film layer to obtain a first light transmission hole and performing laser treatment to the liquid crystal layer to obtain a second light transmission hole. The method provided by the invention reduces a difference of amount of ambient light entering at different angles of the alignment film layer and the liquid crystal layer, and thereby improves imaging quality of the camera.