Light-Emitting Substrate Structure for Uniform Brightness and Low Leakage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing light-emitting substrates face challenges in reducing light leakage and improving brightness uniformity, particularly when increasing the number of light-emitting regions leads to increased wiring complexity and cost.
Innovation Solution
The light-emitting substrate incorporates a light adjustment portion with sub-structures arranged around the light-emitting elements, where the sub-structures are designed to collimate light and reduce diffusion, thereby minimizing light leakage and enhancing brightness uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the number of light-emitting regions is increased to improve display performance, then brightness uniformity and light leakage control are improved, but wiring complexity and manufacturing cost increase
Solution Approach 1:
The patent introduces a light adjustment portion as an intermediary component between the light-emitting element and the display surface. This light adjustment portion includes multiple adjustment units with varying heights that mediate light propagation, controlling light leakage and improving brightness uniformity without requiring additional wiring or increasing the number of light-emitting regions.
Solution Approach 2:
The patent changes the physical parameters of the light adjustment portion, specifically the heights of the adjustment units, to control light propagation characteristics. By varying the heights of different adjustment units, the patent optimizes light leakage control and brightness uniformity while maintaining a simple wiring structure.
2Ease of manufacture
If traditional flat light-emitting structures are used, then manufacturing is simple, but light leakage is severe and brightness uniformity is poor
Solution Approach 1:
The patent transitions from a two-dimensional flat light-emitting structure to a three-dimensional structure by introducing a light adjustment portion with varying heights. This dimensional change allows for better light control and brightness uniformity while maintaining manufacturing simplicity through the use of standard fabrication processes.
3Device complexity
If light-emitting elements are arranged in a standard configuration, then device structure is simple, but light leakage cannot be effectively controlled
Solution Approach 1:
The patent applies local quality by making each adjustment unit in the light adjustment portion have different heights according to its specific position. This localized variation in height allows each unit to control light leakage in its specific region, effectively addressing light leakage issues while maintaining overall structural simplicity.
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 effectively reduces light leakage and improves brightness uniformity across the light-emitting substrate, without the need to increase the number of light-emitting regions, thus simplifying manufacturing and reducing costs.
Implementation Method 1
the sub-structures are designed to collimate light and reduce diffusion, thereby minimizing light leakage
Implementation Method 2
The reflective film is located on a side of the driving circuit layer away from the substrate, and exposes the conductive pad
Implementation Method 3
The light-emitting element includes a light-emitting portion and a pin
Data Source
AI summary
A light-emitting substrate includes a substrate and a plurality of light-emitting assemblies. The plurality of light-emitting assemblies are located on a side of the substrate. At least one light-emitting assembly includes a light-emitting element and a light adjustment portion arranged around the light-emitting element. The light adjustment portion includes a plurality of sub-structures spaced apart from each other. In any two sub-structures in the light adjustment portion in any direction away from the light-emitting element, a height of a sub-structure closer to the light-emitting element is less than a height of a sub-structure farther from the light-emitting element.