Align Key Segmentation for Display Film Positioning
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Solution Overview
Problem
Conventional display devices face challenges in accurately aligning signal transmission films due to reduced non-display region sizes, leading to increased curvature radii and larger non-display area requirements, which complicates the positioning of align keys.
Innovation Solution
The display device incorporates multiple align keys with varying sizes and shapes in different layers, allowing the sensing and image signal transmission films to face each other, minimizing their curvature radii and reducing the non-display region size, while using align keys to accurately align and arrange these films.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the non-display region size is reduced, then the device volume and weight are reduced, but the align key area is reduced making position recognition difficult
Solution Approach 1:
The align key is divided into multiple segments: a first align key in the first non-display region and a second align key in the second non-display region. Each align key portion can be independently recognized, allowing the signal transmission film to be aligned accurately even when the overall non-display region is reduced in size.
Solution Approach 2:
The align keys are positioned at different locations (first and second non-display regions) rather than relying on a single large align key. This spatial distribution across different dimensions allows for accurate alignment while maintaining a compact overall device size.
2Area of stationary object
If the align key area is reduced, then the non-display region size is reduced, but the signal transmission film cannot be aligned accurately
Solution Approach 1:
The alignment function is segmented across multiple align keys positioned in different non-display region areas. The first align key and second align key work together to provide sufficient alignment information without requiring a single large align key area.
Solution Approach 2:
The multiple align keys serve universal alignment functions across different regions of the display device. Each align key contributes to the overall alignment accuracy, allowing the system to achieve precise film positioning with smaller individual align key areas.
3Manufacturing precision
If multiple align keys are used in different layers, then the signal transmission films can be aligned accurately, but the device complexity increases
Solution Approach 1:
The align keys are segmented into different layers (first align key in first non-display region, second align key in second non-display region), allowing each to perform a specific alignment function for different signal transmission films, thereby achieving high precision without requiring a complex single-structure align key.
Data Source
AI summary
A display device includes a first substrate, a display structure, a sensing structure, a sensing signal transmission film, and an image signal transmission film. The first substrate includes a display region and a non-display region at least partially surrounding the display region. The non-display region includes a first portion and a second portion facing the first portion. The display structure is disposed in the display region. The sensing structure is disposed on the display structure. The sensing signal transmission film is electrically connected to the sensing structure. The image signal transmission film is electrically connected to the display structure. The sensing signal transmission film is disposed in the first portion of the non-display region. The image signal transmission film is disposed in the second portion of the non-display region.