Display Panel Beam-Expanding Layer for OLED Power and Heat Management
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Solution Overview
Problem
Large-sized OLED display panels face challenges with high power consumption, heat dissipation issues, and technical difficulties in manufacturing due to the dense arrangement of light-emitting units, which affects display quality and manufacturing efficiency.
Innovation Solution
A display panel design featuring a base substrate with sub-beam generation components that include light-emitting units and a beam-expanding layer with micro-lens units, which expands light beams and allows for increased spacing between light-emitting units, reducing power consumption and improving heat dissipation while maintaining display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light-emitting units are densely arranged to maintain display quality, then display quality is improved, but power consumption increases and heat dissipation becomes difficult
Solution Approach 1:
Multiple light-emitting units are combined into a single sub-beam generation component that shares common structures (TFT, pixel electrode, insulating layers), reducing the total number of independent units and their associated power consumption while maintaining display quality through beam expansion
Solution Approach 2:
A beam-expanding layer with micro-lens units is introduced as an intermediary component that expands the light beam from fewer light-emitting units to cover the area of multiple sub-pixels, enabling reduced density while maintaining display quality
2Illumination intensity
If light-emitting units are densely arranged to maintain display quality, then display quality is improved, but heat dissipation becomes difficult
Solution Approach 1:
Multiple light-emitting units are merged into fewer sub-beam generation components with shared structures, reducing the total heat generation sources and improving heat dissipation while maintaining display quality through optical beam expansion
Solution Approach 2:
The beam-expanding layer acts as an intermediary that allows spatial separation between light-emitting units and their corresponding sub-pixels, improving heat dissipation by reducing density while maintaining display quality
3Illumination intensity
If light-emitting units are densely arranged, then display quality is improved, but manufacturing precision requirements increase
Solution Approach 1:
Multiple light-emitting units share common manufacturing structures and processes (TFT, pixel electrode, insulating layers), reducing the total number of evaporation steps and mask alignments required, thereby lowering manufacturing precision requirements
Solution Approach 2:
The beam-expanding layer with micro-lens units is introduced as an intermediary that allows greater spacing between light-emitting units, reducing the precision requirements for the evaporation process while maintaining display quality through optical expansion
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 enhances display quality by minimizing the sense of graininess, improves heat dissipation, and simplifies the manufacturing process by reducing the precision requirements for the evaporation process, leading to a more efficient and cost-effective large-sized display panel production.
Implementation Method 1
a beam-expanding layer, which is arranged on a light emergent side of the group of light-emitting units and configured to expand light beams emitted from the group of light-emitting units
Implementation Method 2
the beam-expanding layer comprises a micro-lens unit comprising at least one micro-lens
Data Source
AI summary
A display panel configured to display images is provided, each image including a plurality of image pixels and each image pixel including a plurality of sub-pixels of different colors, respectively, the display panel including: a base substrate; and a plurality of sub-beam generation components on the base substrate, each sub-beam generation component being configured to generate at least one sub-pixel in at least one image pixel of the image pixels and including: a group of light-emitting units comprising at least one light-emitting unit and corresponding to at least one sub-pixel; and a beam-expanding layer, which is arranged on a light emergent side of the group of light-emitting units and configured to expand light beams emitted from the group of light-emitting units; an orthogonal projection of the beam-expanding layer on the base substrate at least partially overlapping with an orthogonal projection of the group of light-emitting units on the base substrate.