OLED Light Adjusting Surface for Curved Display Edge Brightness
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Solution Overview
Problem
The existing OLED display panels suffer from a poor viewing angle due to most light being emitted at a right angle of 90 degrees from the curved parts, resulting in darkened edges and compromised display quality during mass production.
Innovation Solution
Incorporating a light adjusting surface with a first curved surface on the OLEDs, which guides light to exit towards non-curved parts, allowing for divergent light emission angles between 30° to 150°, thereby improving the viewing angle and display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If light is emitted at a right angle of 90 degrees from curved parts, then the manufacturing process is simple, but the viewing angle is poor and edge darkening occurs
Solution Approach 1:
The patent applies curvature to the light-emitting surface of the OLED by forming a convex curved surface on the encapsulation layer above the OLED. This curved surface redirects light that would normally emit at 90 degrees to exit at divergent angles (30° to 150°), improving viewing angle and eliminating edge darkening while maintaining manufacturing simplicity through existing lamination and curing processes
2Illumination intensity
If a light adjusting surface with curved surface is added to guide light divergence, then the viewing angle is improved, but the device complexity increases
Solution Approach 1:
The patent merges the light-guiding function into the encapsulation layer itself by forming a convex curved surface during the encapsulation process. This integrates the light-adjusting function with the protective encapsulation structure, avoiding the need for separate light-guiding components and maintaining relatively simple device structure while achieving divergent light emission
Solution Approach 2:
The encapsulation layer serves multiple functions: it provides protective encapsulation for the OLED and simultaneously acts as a light-adjusting element through its convex curved surface that guides light divergence. This multi-functionality reduces the need for additional components and maintains device simplicity while improving viewing angle
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 enhances the viewing angle and display effect by ensuring that light from the curved parts is emitted at various angles, reducing edge darkening and improving visibility from different angles.
Implementation Method 1
a light adjusting surface, and the light adjusting surface is capable of guiding light generated from the OLED to exit towards the non-curved part
Data Source
Figure 1~3a
Figure 3b~3d
Figure 4a~5
AI summary
An organic light-emitting diode display panel and a manufacturing method thereof and a mask plate are disposed. The organic light-emitting diode display panel includes a curved part (301) and a non-curved part (302), the curved part (301) includes a plurality of organic light-emitting diodes (234), the organic light-emitting diode (234) includes a light adjusting surface (0201), and the light adjusting surface (0201) is configured to be capable of guiding light generated from the organic light-emitting diode to exit towards the non-curved part (302).