Curved Display Photo-Alignment Layer Optical Compensation
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Solution Overview
Problem
The challenges in designing and manufacturing curved displays include immature hyperboloid lamination processes, difficulties in assembling curved backlight modules, limited bending directions due to internal electronic elements, and yield and cost issues, along with picture deformation when viewed from an angle due to flat but curved edges.
Innovation Solution
A curved display device comprising a flat panel display with a curved protective layer and a photo-alignment layer formed by mixing photo-alignment units with hydrogel, where the arrangement directions of the photo-alignment units are adjusted to ensure light transmission in a forward direction, reducing manufacturing costs and improving yield and display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a flat panel display is used with a curved protective layer, then manufacturing costs are reduced and yield is improved, but picture deformation occurs when viewed from an angle
Solution Approach 1:
The patent introduces a photo-alignment layer as an intermediary between the flat display panel and the curved protective layer. This layer contains photo-alignment molecules that can be oriented through light irradiation to control light transmission paths, thereby compensating for the optical distortion caused by the curved protective layer while maintaining the simplicity of using a flat panel display.
Solution Approach 2:
The patent changes the optical parameters of the photo-alignment layer by controlling the orientation of photo-alignment molecules through light irradiation. By adjusting the molecular arrangement in different regions of the photo-alignment layer, the light transmission characteristics are modified to counteract the distortion introduced by the curved protective layer, thus improving display quality without increasing manufacturing complexity.
2Shape
If a curved protective layer is added to a flat panel display, then a curved display appearance is achieved, but the display shows picture deformation due to the mismatch between curved edges and flat display surface
Solution Approach 1:
The photo-alignment layer serves as an optical intermediary that bridges the geometric mismatch between the curved protective layer and the flat display panel. Through controlled molecular orientation in this intermediary layer, the light paths are adjusted to maintain image fidelity despite the curved outer appearance.
Solution Approach 2:
The patent applies local quality by creating different photo-alignment molecule orientations in different regions of the photo-alignment layer. The molecular arrangement is locally adjusted based on the position relative to the display center, with edge regions having different orientations compared to central regions, thereby compensating for position-dependent optical distortion.
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 solution allows for a cost-effective, high-yield curved display with improved manufacturing simplicity and better display effects by adjusting the photo-alignment units' directions to ensure light transmission in the forward viewing angle, reducing picture deformation and enhancing viewing comfort.
Implementation Method 1
the photo-alignment units each have an arrangement direction. The greater distances between the photo-alignment units and a center of the flat panel display, the smaller angles formed between the arrangement directions of the photo-alignment units and the display surface
Implementation Method 2
The foregoing photo-alignment layer is formed by mixing the plurality of photo-alignment units with a hydrogel
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
A curved display device (100) includes a flat panel display (110), a curved protective layer (120), and a photo-alignment layer (130). The flat panel display (110) has a display surface (112). The curved protective layer is arranged on one side of the display surface of the flat panel display. The photo-alignment layer is arranged between the flat panel display and the curved protective layer, where the photo-alignment layer (130) includes a plurality of photo-alignment units (132). The greater distances between the photo-alignment units and a center of the flat panel display, the smaller angles formed between the photo-alignment units and the display surface.