Display Panel Lens Layer for Brightness and Wide Viewing Angles
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Solution Overview
Problem
Existing OLED display panels face a trade-off between brightness and view angle, where reducing the view angle to increase brightness limits the user's viewing range.
Innovation Solution
A display panel design featuring a driving backplane, light-emitting units, a color film layer with light-filtering parts, and a lens layer with lenses having specific curvature differences and arrangements to optimize light convergence, ensuring both high brightness and wide viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the view angle is reduced to increase brightness, then the brightness is improved, but the viewing range is limited
Solution Approach 1:
The lens surface is segmented into different regions with different curvature characteristics: a first region with a first curvature and a second region with a second curvature. This segmentation allows different parts of the lens to perform different functions - one region optimizes for brightness while another region maintains viewing angle, thereby resolving the contradiction between brightness enhancement and viewing range preservation
Solution Approach 2:
Different regions of the lens are assigned different local optical properties through varying curvature values. The first region has a curvature optimized for light convergence to enhance brightness, while the second region has a different curvature to maintain wide viewing angles. This local differentiation allows the single lens structure to simultaneously achieve both high brightness and wide viewing range
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 design achieves enhanced frontal brightness while maximizing the view angle by gently converging light through the side surfaces of the lenses, preventing excessive concentration and maintaining a broader viewing range.
Implementation Method 1
a lens layer, located on a surface of the color film layer away from the driving backplane, and including a plurality of lenses arranged in an array
Implementation Method 2
the side surface is a curved surface contracted towards the top surface; the lenses include a top surface and a side surface surrounding an edge of the top surface
Data Source
AI summary
A display panel includes a driving backplane, a plurality of light-emitting units arranged in an array, and a lens layer. The color film layer is located at a side of the light-emitting unit away from the driving backplane, and includes a plurality of light-filtering parts. The light-filtering parts are overlapped with the light-emitting units in one-to-one correspondence. The lens layer is located on a surface of the color film layer away from the driving backplane, and includes a plurality of lenses arranged in an array, where the lenses are overlapped with the light-filtering parts in one-to-one correspondence. In the lens and the light-filtering part overlapped with the lens, the middle region of the light-filtering part is overlapped with the top surface of the lens, and the side surface of the light-filtering part is overlapped with the edge region of the lens.