Curved Display Light-Emitting Structure with Local Region Tuning
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Solution Overview
Problem
Curved surface displays experience non-uniform brightness due to changes in light path after bending, which is a challenge in meeting the requirements of modern electronic devices.
Innovation Solution
A display device with a light emitting structure that includes regions with different curvatures, where the brightness and chromaticity are adjusted to ensure uniformity in the normal view angle by optimizing structural parameters such as backlight source brightness, transparent electrode angles, and spacer distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional displays are bent into curved surface shape, then the display can be integrated into curved surface electronic devices, but the internal or outputting light path will be changed resulting in non-uniform brightness of the display surface
Solution Approach 1:
The patent divides the display surface into multiple regions (first region and second region) with different curvature radii. Each region is optimized independently with specific structural parameters (transparent electrode angles, spacer distribution, backlight source brightness) to achieve uniform brightness in the normal view angle while accommodating the curved surface geometry.
Solution Approach 2:
The patent adjusts multiple structural parameters including transparent electrode angles, spacer distribution density, and backlight source brightness distribution across different regions. By changing these parameters locally in response to the curvature variations, the system compensates for light path changes and maintains brightness uniformity.
2Illumination intensity
If different curvature radii are used in different regions to optimize brightness uniformity, then the normal view angle brightness becomes more uniform, but the device structure becomes more complex
Solution Approach 1:
The display is segmented into multiple regions (first region with first curvature radius and second region with second curvature radius) along a first direction. Each region is further divided into sub-regions (first sub-region and second sub-region) along a second direction, allowing independent optimization of structural parameters in each segment while maintaining overall system coherence.
Solution Approach 2:
Different structural parameters are applied locally to different regions: transparent electrode angles, spacer distribution densities, and backlight source brightness are optimized specifically for each region's curvature characteristics, achieving uniform brightness without requiring complete redesign of the entire display structure.
Data Source
AI summary
An electronic device includes a light emitting structure including a curved surface that includes a first region and a second region arranged along a first direction. The light emitting structure outputs a first light in the first region and outputs a second light in the second region. The first light has a first normal brightness in a first orthogonal direction perpendicular to the first direction and a first oblique brightness in a first inclined direction. The first orthogonal direction and the first inclined direction form a first acute included angle. The second light has a second normal brightness in a second orthogonal direction and a second oblique brightness in a second inclined direction. The second orthogonal direction and the second inclined direction form a second acute included angle. The first oblique brightness and the second oblique brightness are different.