Light-Controlling Display Structure for Precise Window Alignment
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Solution Overview
Problem
Existing display devices face challenges in precise alignment during manufacturing, leading to increased production costs and reduced visible surface area due to dead spaces, which is particularly problematic for in-vehicle infotainment systems.
Innovation Solution
The display device incorporates a light controlling layer with an alignment key layer in the same layer as the light blocking layers, allowing for precise alignment and reduced dead space, featuring a window layer aligned using the alignment key layer, and includes multiple light blocking layers to manage light paths effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If separate alignment keys are provided for window layer alignment, then alignment precision is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The alignment key function is merged with the light blocking layer structure. The light blocking layer serves dual purposes: blocking light and providing alignment keys for window layer positioning. This eliminates the need for separate alignment key structures, reducing device complexity while maintaining alignment precision.
Solution Approach 2:
The light blocking layer is designed to perform multiple functions simultaneously: light blocking and alignment reference. By making the light blocking layer universal, the patent eliminates redundant structures and simplifies the overall device architecture while ensuring precise alignment during manufacturing.
2Manufacturing precision
If dead space is increased for alignment purposes, then alignment precision is improved, but visible surface area decreases
Solution Approach 1:
The alignment keys are localized within the light blocking layer structure rather than requiring separate dead space areas. By concentrating the alignment function within existing structural elements, the patent minimizes the impact on visible surface area while ensuring precise alignment capability.
3Manufacturing precision
If multiple separate layers are used for light blocking and alignment, then alignment precision is improved, but manufacturing complexity increases
Solution Approach 1:
The alignment key features are integrated into the light blocking layer, allowing both light blocking and alignment functions to be achieved in a single layer. This reduces the number of manufacturing steps and simplifies the production process while maintaining alignment precision.
Data Source
AI summary
A display device includes: a display panel including first and second pixels; a light controlling layer on the display panel, and including an alignment key layer, and light blocking layers including first and second light blocking parts; and a window layer on the light controlling layer. The first light blocking part encloses an entirety of the first pixel in a plan view. The second light blocking part is opened at a first side of the second pixel in a first direction, and encloses a second side of the first pixel in a second direction. The display device is to operate in a first mode in which the first pixel is to provide light, or a second mode in which the second pixel is to provide light. The alignment key layer is located in a same layer as that of at least one of the light blocking layers.