Mini-LED Display Panel Prism Layout for Lower Color Shift
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Solution Overview
Problem
Existing mini-LED display devices suffer from a low aperture ratio due to the need for a black matrix (BM) between adjacent light-emitting units to shield mixed light, resulting in partial light loss, increased energy consumption, and reduced resolution.
Innovation Solution
A display panel design that includes a substrate, a driving circuit layer, light-emitting chips, and an encapsulation layer, with one or more prisms arranged in the light-exiting direction of the light-emitting chips. The prisms include protrusions that converge light, reducing the light mixing area and the width of the black matrix, thereby improving the aperture ratio and resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a black matrix is disposed between adjacent light-emitting units to shield mixed light, then color shift is reduced, but aperture ratio is lowered and energy consumption increases
Solution Approach 1:
The patent extracts and removes the black matrix shielding structure from between adjacent light-emitting units. By eliminating this blocking element, light can pass through without being absorbed by the black matrix, thereby increasing the aperture ratio while maintaining color accuracy through the lens array's optical control
Solution Approach 2:
The patent introduces a lens array as an intermediary optical element between the light-emitting units and the viewing area. This lens array mediates the light paths, controlling and separating the light from different LEDs to prevent color mixing without requiring black matrix shielding, thus improving aperture ratio while maintaining color accuracy
2Ease of manufacture
If a black matrix is disposed between adjacent light-emitting units to shield mixed light, then color shift is reduced, but energy consumption increases
Solution Approach 1:
The patent removes the black matrix shielding structure that was previously required to prevent color mixing. By extracting this light-blocking element, more light reaches the display area without being absorbed, reducing energy waste and lowering power consumption while maintaining color accuracy through optical control
Solution Approach 2:
The lens array serves as an intermediary that optimizes light distribution and control. It directs light efficiently from each LED to its intended area, reducing the need for excessive light emission to compensate for black matrix absorption, thereby reducing energy consumption
3Ease of manufacture
If a black matrix is disposed between adjacent light-emitting units to shield mixed light, then color shift is reduced, but resolution is lowered
Solution Approach 1:
The patent extracts and eliminates the black matrix shielding structure that occupied space between light-emitting units. By removing this element, the distance between functional light-emitting elements is reduced, allowing for higher pixel density and improved resolution while maintaining color accuracy through the lens array's optical control
Solution Approach 2:
The lens array acts as an intermediary that enables precise optical control without requiring physical separation by black matrix. This allows adjacent light-emitting units to be positioned closer together, increasing the number of pixels that can fit in a given area and thereby improving resolution
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 prism arrangement effectively reduces the angle of light emission, minimizes light mixing, and decreases the width of the black matrix, leading to improved aperture ratio, reduced color shift, and enhanced display resolution.
Implementation Method 1
one or more prisms, the prism is arranged in a direction of the encapsulation layer away from the light-emitting chips... the prism includes protrusions arranged in an array... converge light, reducing the light mixing area
Data Source
AI summary
The present application provides a display panel and a display device. In the present application, a prism is arranged in the light-exiting direction of the light-emitting chip, and the prism includes protrusions, so that the prism can concentrate the light emitted by the light-emitting chips, thereby reducing a width of the light mixing area between adjacent light-emitting chips, and reducing a width of the black matrix, thus reducing the color shift, improving an aperture ratio, and reducing a distance between adjacent light-emitting chips to improve the resolution.