Display Panel Dummy Color Resist Depth Gradient
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Solution Overview
Problem
Existing liquid crystal display manufacturing processes face challenges in ensuring the alignment fluid is effectively diffused out of the display region, often resulting in incomplete coverage and inconsistent width between the display and dummy color resist regions, which can lead to display issues and reduced yield.
Innovation Solution
The solution involves a display panel design with a first substrate having a display region and a non-display region with dummy color resists arranged in the non-display region, where the channel depth of the dummy color resist region is smaller than that of the display color resist region, and an alignment film is formed on the outer surfaces of both, ensuring uniform coverage and diffusion of the alignment fluid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the alignment fluid is injected to coat the edge of the display region, then the display region is covered with the alignment fluid, but the alignment fluid may be diffused to the dummy color resist layer outside the display region resulting in incomplete coverage
Solution Approach 1:
The patent applies different channel depths to different regions: the display color resist region has a first channel depth while the dummy color resist region has a second channel depth that is shallower. This local differentiation creates a depth gradient that guides the alignment fluid to diffuse into the dummy region without allowing it to escape, ensuring complete and uniform coverage across the entire display region.
Solution Approach 2:
The patent introduces a vertical dimension (channel depth) to control the horizontal diffusion of alignment fluid. By varying the channel depth between display and dummy color resist regions, the patent creates a three-dimensional structure that manages fluid flow in two dimensions, preventing the alignment fluid from diffusing out of the display region while ensuring complete coverage.
2Manufacturing precision
If the dummy color resist region is designed to prevent alignment fluid diffusion, then the alignment fluid remains in the display region, but the width between display and dummy color resist regions becomes inconsistent
Solution Approach 1:
The patent creates local quality differences by setting different channel depths for display and dummy color resist regions. This allows the structure to maintain consistent external dimensions while having internal depth variations that control alignment fluid behavior, thus preserving both width consistency and fluid containment.
Solution Approach 2:
The patent pre-configures the dummy color resist region with a shallower channel depth before the alignment fluid injection process. This preliminary structural preparation ensures that when the alignment fluid is injected, it naturally diffuses into the dummy region due to the depth gradient, preventing escape and maintaining consistent region widths without requiring additional control measures.
3Manufacturing precision
If the channel depth of dummy color resist region is made shallower, then the alignment fluid can diffuse out of the display region, but the structure complexity increases
Solution Approach 1:
The patent controls the diffusion of alignment fluid by changing a single parameter - the channel depth - rather than introducing complex structural elements. The display color resist region maintains a first channel depth while the dummy color resist region has a second, shallower channel depth. This parameter variation provides a simple yet effective mechanism for guiding fluid diffusion while maintaining structural simplicity and ease of manufacture.
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 ensures complete and uniform coverage of the alignment film, improving the display effect and increasing product yield by facilitating the smooth diffusion of the alignment fluid and reducing channel formation between the display and dummy color resist regions.
Implementation Method 1
the alignment fluid on the edge may be diffused to a dummy color resist layer outside the display region to ensure that the whole display region is completely covered by the alignment fluid
Data Source
AI summary
A display panel, a manufacturing method therefor and a display device are provided. The display panel includes a first substrate and color resists. An alignment film is formed on outer surfaces of the color resists. The first substrate includes a display color resist region and a dummy color resist region. A channel depth of the dummy color resist region is smaller than a channel depth of the display color resist region.