Wearable Display Subpixel Layout to Reduce Screen-Door Effect
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Solution Overview
Problem
Existing display systems, such as head mount displays (HMDs), suffer from the screen-door effect due to the short distance between the user's eyes and the display panel, which causes the array of sub-pixels to be visually recognized as a mesh or stripe pattern.
Innovation Solution
The display system incorporates a wearable part with two display devices, each having a display region with sub-pixels arrayed in a mosaic pattern. The sub-pixels are arranged in a matrix configuration along orthogonal directions and are inclined to reduce the visibility of the sub-pixel array, thereby minimizing the screen-door effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a transmissive liquid crystal display panel is used with a mosaic array of sub-pixels, then higher-definition images can be produced, but the screen-door effect occurs due to the short distance between the user's eyes and the display region
Solution Approach 1:
The patent applies asymmetry by arranging sub-pixels of the same color to be continuously arrayed in an inclined third direction rather than in a symmetric grid pattern. This asymmetric continuous arrangement of same-color sub-pixels along the inclined direction reduces the visibility of the mosaic pattern and minimizes the screen-door effect while maintaining high image definition
Solution Approach 2:
The patent introduces a third inclined direction for arranging sub-pixels of the same color, adding a dimensional aspect to the sub-pixel arrangement beyond the conventional row-column matrix. This third dimension of continuous arrangement along the inclined direction helps to eliminate the mesh-like appearance caused by traditional mosaic arrays
Data Source
AI summary
According to an aspect, a display system includes: a wearable part; a first display device having a first display region; a second display device having a second display region; and a drive circuit. The first display region and the second display region are provided with sub-pixels arrayed along a first direction and a second direction. The sub-pixels include first sub-pixels, second sub-pixels, and third sub-pixels. The first sub-pixels are continuously arrayed in a third direction inclined with respect to the first and second directions, the second sub-pixels are continuously arrayed in the third direction, and the third sub-pixels are continuously arrayed in the third direction. A first angle between a fifth direction and the third direction is smaller than a second angle between the second direction and the third direction. The fifth direction is orthogonal to a fourth direction in which the first and second display regions are arranged.