Transparent Partition Wall Light-Shielding Member for Display Devices
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Solution Overview
Problem
Current display devices face challenges in achieving high color purity and preventing light leakage between pixels, particularly due to the inefficiencies in light-shielding and color conversion patterns, which affect the overall display quality.
Innovation Solution
The display device incorporates a substrate with a transparent partition wall and a light-shielding member made of negative photosensitive organic material, featuring a lattice shape and varying thickness and roughness, along with quantum dot or fluorescent materials for color conversion, to enhance light control and reduce light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a light-shielding member is added to prevent light leakage between pixels, then light leakage is reduced, but device complexity increases
Solution Approach 1:
The patent combines the light-shielding member with the transparent partition wall structure, integrating two functions (light shielding and pixel separation) into a single component. The light-shielding member is disposed on the transparent partition wall, merging the light-shielding function with the existing partition structure, thereby preventing light leakage while avoiding the need for completely separate light-shielding components.
Solution Approach 2:
The light-shielding member extends not only on the top surface but also on the side surfaces of the transparent partition wall. This three-dimensional configuration allows the light-shielding function to operate in multiple spatial dimensions, effectively blocking light leakage paths that would otherwise bypass a two-dimensional light-shielding layer.
2Manufacturing precision
If quantum dot or fluorescent materials are used for color conversion, then color purity is improved, but light leakage to adjacent pixels occurs
Solution Approach 1:
The transparent partition wall acts as an intermediary structure between adjacent pixels containing quantum dot or fluorescent materials. The light-shielding member disposed on this partition wall serves as a mediator that allows the color conversion materials to maintain high color purity while preventing their emitted light from leaking into adjacent pixels.
3Object-affected harmful factors
If the light-shielding member has varying thickness, then light leakage is better controlled, but manufacturing precision requirements increase
Solution Approach 1:
The light-shielding member is designed with varying thickness where it is disposed on the transparent partition wall, with different thicknesses at different locations. This local quality variation allows optimized light leakage control at each position - thicker regions where light leakage is more problematic, and thinner regions where less shielding is needed - while the patent addresses the manufacturing challenge through specific formation methods.
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
This configuration improves display quality by minimizing light leakage and increasing color purity through precise light management, resulting in better color representation and efficiency.
Implementation Method 1
a light-shielding member disposed on a top surface and side surfaces of the transparent partition wall, the light-shielding member including a negative photosensitive organic material
Implementation Method 2
a first color conversion pattern disposed in at least one of the plurality of openings, the first color conversion pattern including a quantum dot material or a fluorescent material
Data Source
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AI summary
A display device may include: a substrate; a transparent partition wall disposed on the substrate, the transparent partition wall configured to define a plurality of openings; a light-shielding member disposed on a top surface and side surfaces of the transparent partition wall, the light-shielding member including a negative photosensitive organic material; and a first color conversion pattern disposed in at least one of the plurality of openings, the first color conversion pattern including a quantum dot material or a fluorescent material.