Magnetic Alignment Marks for Lens-to-Display Panel Registration
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Solution Overview
Problem
Existing display devices face challenges in achieving precise alignment between optical members and display panels for stereoscopic and viewing angle control applications, leading to inefficiencies in image display and increased active area loss due to conventional alignment methods.
Innovation Solution
The use of two-dimensional (2D) magnetic alignment marks, such as iron-germanium-ditelluride (Fe4GeTe2), on both the optical member and display panel to facilitate magnetic alignment, minimizing active area loss and enhancing alignment accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional alignment methods are used to align optical members with display panels, then alignment can be achieved, but alignment accuracy is insufficient and active area loss increases
Solution Approach 1:
The patent replaces conventional mechanical or optical alignment methods with magnetic alignment. Magnetic alignment marks containing magnetic substances generate magnetic fields that interact to automatically align the optical member with the display panel, achieving higher alignment accuracy while minimizing active area loss through precise positioning.
2Productivity
If conventional alignment methods are used, then alignment process can be completed, but the process is complex and time-consuming
Solution Approach 1:
The magnetic alignment marks enable self-alignment between the optical member and display panel. The magnetic fields generated by the alignment marks automatically guide the positioning process without requiring complex external alignment equipment or procedures, simplifying the process and improving efficiency.
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 approach simplifies the alignment process, reduces active area loss, and achieves high alignment accuracy, improving the display of stereoscopic and viewing angle control images by using magnetic forces to align the optical member with the display panel.
Implementation Method 1
each of the first alignment mark and the second alignment mark includes a magnetic substance
Data Source
AI summary
A display device includes: an optical member including a plurality of lenses and a first alignment mark disposed to overlap at least one lens of the plurality of lenses; and a display panel including a plurality of subpixels and a second alignment mark disposed between the plurality of subpixels and overlapping the first alignment mark, wherein each of the first alignment mark and the second alignment mark includes a magnetic substance.