Curved Display Panel Light-Filtering Layer Design
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Solution Overview
Problem
Conventional curved display panels suffer from issues like yellowing and darkening at bending locations due to misalignment and reduced effective display areas, leading to impaired display quality.
Innovation Solution
A curved display panel design featuring a light-filtering layer with varying effective areas and light transmission rates for subpixels, including the use of light-transmitting holes and white light-filtering subunits to ensure consistent light intensities across subpixels, reducing display differences and mitigating the effects of deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conventional curved display panel design is used, then curvature comparable to viewer's retina is achieved, but yellowing and darkening occur at bending locations
Solution Approach 1:
The patent applies local quality by making the light-filtering units at bending locations have different effective areas compared to those at non-bending locations. Specifically, the light-filtering units corresponding to subpixels at bending locations are designed with larger effective areas to compensate for the reduced light transmission caused by curvature-induced deformation, thereby maintaining uniform display quality across the curved surface.
Solution Approach 2:
The patent changes the parameter of effective area of light-filtering units based on their position in the curved display panel. By adjusting the effective area parameter of light-filtering units at different locations (particularly increasing it at bending locations), the patent compensates for the non-uniform light transmission caused by curvature,ไป่ eliminating yellowing and darkening effects.
2Strength
If spacers are disposed at bending locations, then structural support is provided, but effective light-filtering area is reduced
Solution Approach 1:
The patent applies local quality by differentiating the design of light-filtering units based on their location. At bending locations where spacers are disposed, the light-filtering units are designed with larger effective areas to compensate for the space occupied by spacers and the reduced light transmission path, while light-filtering units at non-bending locations maintain standard dimensions.
Solution Approach 2:
The patent applies preliminary anti-action by pre-compensating for the area reduction caused by spacers. The effective area of light-filtering units at bending locations is deliberately increased in advance to offset the area occupied by spacers, ensuring that the net light transmission remains uniform across the display panel.
3Ease of manufacture
If uniform light-filtering area is used across all subpixels, then manufacturing is simplified, but display difference occurs at bending locations
Solution Approach 1:
The patent applies local quality by making the effective areas of light-filtering units position-dependent. Light-filtering units at bending locations have larger effective areas than those at non-bending locations, creating a non-uniform design that compensates for the non-uniform optical path caused by curvature, thereby achieving uniform display quality.
Solution Approach 2:
The patent applies asymmetry by intentionally creating asymmetric effective areas for light-filtering units based on their location in the curved display panel. This asymmetric design, where units at bending locations differ from those at non-bending locations, is necessary to achieve symmetric uniformity in the final display output across the curved surface.
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
The solution ensures that the display panel maintains consistent light intensities and reduces the likelihood of yellowing and darkening at bending locations, providing improved display quality by balancing the effective areas and light transmission rates of subpixels.
Implementation Method 1
a first substrate, a second substrate, and a light-filtering layer between the first substrate and the second substrate
Implementation Method 2
at least one light-transmitting hole is formed in at least one of the second light-filtering unit and the third light-filtering unit, the light-transmitting hole allowing white light emitted by a backlight source to pass through
Implementation Method 3
at least one white light-filtering subunit is formed on at least one of the second light-filtering unit and the third light-filtering unit, the white light-filtering subunit converting light pass there-through to white light
Data Source
AI summary
The present disclosure provides a curved display panel, including a first substrate and an opposing second substrate, the first substrate including a light-filtering layer. The light-filtering layer includes a first light-filtering unit, a second light-filtering unit, and a third light-filtering unit in a pixel unit; and at least one of an effective light-filtering area of the second light-filtering unit and an effective light-filtering area of the third light-filtering unit is larger than or smaller than an effective light-filtering area of the first light-filtering unit. A ratio of the effective light-filtering area of the second light-filtering unit to the effective light-filtering area of the first light-filtering unit is greater than or equal to about 0.9 and less than about 1, or is greater than about 1 and less than or equal to about 1.1.