Light Path Control Member Coating for Heat-Stable Light Conversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing technologies fail to effectively address the challenges of materials and processes in light path control members, leading to reduced driving characteristics and reliability due to direct contact between light conversion materials and substrates, deformation by heat, and impurity flow.
Innovation Solution
A light path control member comprising a first and second substrate with electrodes and a light conversion part, featuring a partition wall and receiving part, and a coating layer to prevent direct contact and maintain shape integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the light conversion material is disposed directly inside the receiving part formed by patterning a concave portion on a resin material, then the manufacturing process is simple, but the resin material additive flows into the light conversion material causing decreased driving characteristics
Solution Approach 1:
A coating layer is introduced as an intermediary between the resin material and the light conversion material. This coating layer prevents the resin material's additive from flowing into the light conversion material, thereby maintaining driving characteristics while keeping the manufacturing process relatively simple. The coating layer acts as a barrier that mediates the interaction between the resin substrate and the functional light conversion material.
2Ease of manufacture
If the resin material is subjected to heat during manufacturing or use, then the manufacturing process can be completed, but the resin material deforms causing reduced reliability
Solution Approach 1:
The coating layer is applied beforehand to the resin material surface before the light conversion material is disposed. This pre-applied coating layer serves as a protective cushion that prevents direct contact between the resin material and light conversion material, thereby preventing deformation and maintaining shape stability during subsequent heating processes in manufacturing and use.
3Device complexity
If the light conversion material comes into contact with the resin material, then the structure is simple, but impurities flow into the light conversion material changing its characteristics
Solution Approach 1:
The coating layer serves as an intermediary barrier between the resin material and the light conversion material. It prevents impurities and additives from the resin material from flowing into the light conversion material, thereby maintaining consistent material characteristics and reliability while adding only a thin protective layer that does not significantly increase structural complexity.
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 coating layer enhances driving characteristics and reliability by preventing impurity flow and shape deformation, ensuring consistent performance under heat and improving adhesion.
Implementation Method 1
a first coating layer is disposed on an inner surface of the receiving part
Implementation Method 2
The coating layer has a thickness and a decomposition temperature within a set range. Accordingly, a shape of the light path control member can be fixed by the coating layer. Therefore, a shape of the light conversion part does not change due to heat generated during driving
Implementation Method 3
The particles can move by applying voltage. Accordingly, the receiving part can be switched into a light transmitting portion or a light blocking portion
Data Source
AI summary
A light path control member according to an embodiment includes a first substrate; a first electrode disposed on the first substrate; a second substrate disposed on the first substrate; a second electrode disposed under the second substrate; and a light conversion part disposed between the first electrode and the second electrode, wherein the light conversion part includes a partition wall part and a receiving part which are alternately disposed, a light conversion material is disposed inside the receiving part, and a first coating layer is disposed on an inner surface of the receiving part.