Display Panel Support Pillar Density for Water Ripple Mitigation
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Solution Overview
Problem
Conventional display panels with narrow frames face issues such as insufficient panel pressure and poor display effects, including water ripple phenomena, due to the absence of support pillars in high light transmission regions where cameras are located, leading to reduced display performance.
Innovation Solution
The display panel design includes a first region without support pillars, with a higher area density of support pillars in surrounding regions to enhance pressure resistance and mitigate water ripple issues, while maintaining the aperture ratio by adjusting the density and distribution of support pillars in the second and third regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If support pillars are removed from the high light transmission region to improve display effect, then water ripple phenomenon is reduced, but panel pressure resistance becomes insufficient
Solution Approach 1:
The patent applies local quality by creating different support pillar density distributions in different regions of the display panel. The first region (high light transmission area) has lower support pillar density to reduce water ripple, while the second region (peripheral area) has higher support pillar density to maintain pressure resistance. This spatial variation in structural properties resolves the contradiction between display quality and mechanical strength.
2Strength
If support pillars are added to improve pressure resistance, then panel strength increases, but display effect deteriorates due to water ripple phenomenon
Solution Approach 1:
The patent segments the display panel into multiple regions with different support pillar density characteristics. The first region contains no support pillars or has lower density, while the second region contains support pillars with higher density. This segmentation allows each region to be optimized independently - the first region for display quality and the second region for structural strength, thereby resolving the contradiction.
3Area of stationary object
If functional units are disposed in the display region to reduce frame width, then screen ratio increases, but display effect is reduced due to structural changes
Solution Approach 1:
The patent maintains high screen ratio by disposing functional units in the display region, and simultaneously maintains good display effect by creating a local quality difference in support pillar distribution. The first region corresponding to the functional unit location has reduced support pillar density to prevent water ripple, while other areas maintain necessary structural support. This resolves the contradiction between narrow frame design and display quality.
Data Source
AI summary
A display panel and a display device are provided. The display panel includes a first substrate and a second substrate, that are oppositely disposed. The display panel also includes a display material layer and support pillars, that are disposed between the first substrate and the second substrate. Further, the display panel includes a first region, a second region disposed surrounding the first region, and a third region disposed surrounding the second region. The first region does not contain any support pillar. The support pillars are disposed in the second and third regions, and have an area density in the second region larger than an area density in the third region.