Partition Wall Layout for Uniform Color Conversion Display Edges
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Solution Overview
Problem
Display devices with color conversion layers often experience staining at the edges due to non-uniform filling layers, affecting display quality.
Innovation Solution
A display device design featuring a partition wall with varying lengths in the display and non-display areas, including a filling layer that fills openings between the color conversion and transmission layers, ensuring a uniform thickness and preventing edge staining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a color conversion layer is added to improve display efficiency, then light conversion efficiency is improved, but staining appears at the edge of the display area due to non-uniform filling layer
Solution Approach 1:
The partition wall is divided into multiple segments with different lengths (first partition wall with length L1, second partition wall with length L2, where L1 > L2). This segmentation allows the filling layer to have different effective lengths in different regions, compensating for the non-uniformity caused by the color conversion layer and achieving uniform thickness across the display area.
Solution Approach 2:
Different regions of the partition wall are designed with different local properties (different lengths). The first partition wall extends further into the non-display area than the second partition wall, creating local variations that compensate for the overall non-uniformity introduced by the color conversion layer structure.
2Manufacturing precision
If the partition wall is extended into the non-display area to maintain uniform filling layer thickness, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The partition walls extend partially into the non-display area, but not equally. The first partition wall extends further than the second partition wall, providing just enough extension to achieve uniform filling layer thickness without unnecessarily increasing the complexity of the overall device structure.
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 provides improved display quality by maintaining a uniform distance between the display unit and color conversion unit, restricting staining at the display area edges and ensuring consistent performance.
Implementation Method 1
A light emitting diode is an element in which holes supplied from an anode and electrons supplied from a cathode are combined in an emission layer formed between the anode and the cathode to form excitons, and these excitons are stabilized to emit light.
Implementation Method 2
The color conversion layer may convert incident light into light of a different color.
Data Source
AI summary
A display device includes a substrate including a display area and a non-display area, a transistor disposed on the substrate, a light emitting diode electrically connected to the transistor, a color conversion layer and a transmission layer disposed on the light emitting diode, and a partition wall disposed on the light emitting diode, where the partition wall includes a first partition wall disposed in the display area between the color conversion layer and the transmission layer and a second partition wall disposed in the non-display area, and the partition wall includes a first part having a first length from a first end to a boundary of the display area and the non-display area, and a second part having a second length from a second end to a boundary of the display area and the non-display area, where the first length is greater than the second length.