Dummy Color Filter Openings Prevent PI Backflow
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Solution Overview
Problem
The dummy color filter in display panels affects the diffusion of polyimide (PI) liquid, causing backflow and affecting display quality due to its uneven thickness and blocking effect.
Innovation Solution
Incorporating a first dummy color filter with openings along the scan lines in the display area, ensuring smooth discharge of the PI liquid without backflow, by designing the openings to match the spacing between adjacent scan lines and optimizing their placement to facilitate even diffusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dummy color filter is added to protect the color filter in the display area, then the display quality is protected from uneven thickness of outermost color resistance, but the PI liquid diffusion is affected causing backflow
Solution Approach 1:
The first dummy color filter is segmented into multiple parts by forming openings that divide it into several sections. This segmentation allows the PI liquid to pass through the openings and continue diffusing into the display area, preventing backflow while maintaining the protective function of the dummy color filter.
Solution Approach 2:
The first dummy color filter is designed with openings, creating a porous structure that allows fluid (PI liquid) to pass through. This porous design enables the PI liquid to diffuse through the dummy color filter into the display area, preventing backflow while maintaining the protective function.
2Reliability
If the dummy color filter is made with greater height than the color filter to ensure coverage, then the protection function is improved, but the blocking effect on PI liquid increases causing backflow
Solution Approach 1:
By segmenting the first dummy color filter with openings, the blocking effect is reduced while maintaining the overall height and coverage. The openings create pathways for PI liquid to pass through, allowing the filter to remain tall for protection while not completely blocking the liquid diffusion.
Solution Approach 2:
The first dummy color filter has non-uniform local quality with openings at specific locations where PI liquid needs to pass through. The openings are positioned to allow local passage of PI liquid while other portions maintain the blocking function for protection, creating different functional zones within the same component.
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 design prevents PI backflow, enhancing the display quality by ensuring smooth and even application of the PI liquid, thereby improving the overall performance of the display panel.
Implementation Method 1
The dummy color filter affects diffusion of a polyimide (PI) liquid, causing PI backflow
Data Source
AI summary
This application discloses a display panel (100) and a display device (600). The display panel (100) includes: a plurality of scan lines (111); a plurality of data lines (112); a color filter (400) formed in a display area (110); and a dummy color filter (410) formed in a non-display area (113). The dummy color filter (410) includes a first dummy color filter (411) and a second dummy color filter (412). The first dummy color filter (411) is located on a first side edge (120) of the non-display area (110) and is arranged perpendicular to the scan lines (111). The first dummy color filter (411) has openings.