Joinable Display Panel Brightness Equalization Across Bonded Regions
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Solution Overview
Problem
Conventional methods for bonding Mini-LED or Micro-LED lamp beads in batches result in inconsistent luminous brightness and chromaticity across different regions of LED panels, leading to poor display uniformity due to low efficiency in bonding processes.
Innovation Solution
A display panel design with distinct regions for LED elements of varying brightness, utilizing a package structure with a regulating material, such as mixed pigments or up-conversion particles, to adjust and equalize the brightness and chromaticity across regions, improving bonding efficiency and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If LED lamp beads from different batches are uniformly and mixedly bonded onto a lamp board, then display uniformity in different regions is improved, but bonding efficiency deteriorates
Solution Approach 1:
The lamp board is divided into multiple regions, and LED lamp beads of the same batch are bonded to corresponding regions. This segmentation allows for efficient batch bonding while maintaining display uniformity within each region, resolving the contradiction between bonding efficiency and display uniformity.
Solution Approach 2:
Different regions of the lamp board are assigned to receive LED lamp beads from specific batches based on their luminous brightness characteristics. This local quality approach ensures that each region receives LEDs with matching brightness properties, achieving display uniformity without requiring mixed bonding across the entire board, thus maintaining high bonding efficiency.
2Productivity
If LED lamp beads from different batches are bonded separately to different regions, then bonding efficiency is improved, but display uniformity deteriorates
Solution Approach 1:
The patent applies local quality by tailoring the LED batch selection to each specific region's requirements. Each region receives LEDs from batches with appropriate luminous brightness characteristics, ensuring display uniformity is achieved locally while maintaining high bonding efficiency through batch-specific bonding processes.
Solution Approach 2:
The invention changes the parameter of LED batch selection based on regional requirements. By adjusting which batch of LEDs is assigned to which region based on luminous brightness parameters, the patent achieves both high bonding efficiency and display uniformity, resolving the contradiction between the two objectives.
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 display uniformity by adjusting the brightness and chromaticity of LED panels through centralized bonding and packaging, ensuring consistent color output across regions, thereby improving the overall efficiency and uniformity of LED panel displays.
Implementation Method 1
the package structure is provided with a regulating material configured to reduce a brightness of the certain color light
Data Source
AI summary
A display panel and a joinable display panel are provided. Multiple first pixel units are arranged in a first region and include multiple first LED elements with different light-emitting colors. Multiple second pixel units are arranged in a second region and include multiple second LED elements with different light-emitting colors. In the first LED element and the second LED element with a certain color light, the luminous brightness of the first LED element is greater than that of the second LED element. A package structure covers the multiple first pixel units and the multiple second pixel units. A regulating material for reducing a brightness of the certain color light is arranged in the package structure, and is correspondingly arranged in the first region.