Liquid Crystal Panel Pixel Layout to Reduce Sensing-Area Boundary Visibility
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Solution Overview
Problem
The visibility and quality of images in display apparatuses are compromised due to the heterogeneity and incompatibility at the boundary between images formed by pixel areas within and outside the sensing area, which have different resolutions.
Innovation Solution
The display apparatus incorporates a liquid crystal panel with first, second, and third pixel areas of varying sizes, where the second and third pixel areas within the sensing area have larger dimensions than the first pixel areas outside, and are arranged to match the spatial frequency of the first pixel areas, with specific color patterns and signal wiring configurations to minimize the visibility of boundaries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the sensing area uses larger pixel areas to improve light transmittance for the optical module, then the optical detection function is improved, but the resolution and image quality in the sensing area deteriorate
Solution Approach 1:
The patent applies local quality by creating different pixel area sizes in different regions: larger pixel areas (second and third pixel areas) are used specifically in the sensing area to improve light transmittance for optical module detection, while smaller pixel areas (first pixel areas) are used in non-sensing areas to maintain high resolution. This regional differentiation resolves the contradiction by optimizing each area for its specific function.
Solution Approach 2:
The patent segments the pixel areas into multiple types with different sizes and functions. The pixel areas are divided into first pixel areas (smaller size for high resolution in non-sensing regions), second pixel areas (larger size for light transmittance in sensing region), and third pixel areas (intermediate size). This segmentation allows simultaneous optimization of both resolution and light transmittance in different parts of the display apparatus.
2Use of energy by moving object
If the sensing area has lower resolution to accommodate larger pixel areas, then light transmittance is improved, but a visible boundary and heterogeneity appear at the interface with high-resolution areas
Solution Approach 1:
The patent uses color changes as a visual transition mechanism. Specifically, green pixel areas are introduced at the boundary between the sensing area (with larger pixel areas) and non-sensing areas (with smaller pixel areas). These green regions serve as a gradual transition zone that reduces the visual impact of resolution differences, making the boundary less noticeable and improving overall image quality perception.
Solution Approach 2:
The patent introduces a new dimension to the pixel area design by varying not only the size but also the color of pixel areas at boundaries. The green pixel areas create a transitional zone that addresses the visual discontinuity problem, effectively adding a color dimension to resolve the boundary visibility issue caused by resolution differences.
3Manufacturing precision
If uniform pixel areas are used across the entire display to maintain consistent resolution, then image quality is improved, but light transmittance in the sensing area deteriorates
Solution Approach 1:
The patent applies local quality by creating different pixel area sizes in different regions: larger pixel areas (second and third pixel areas) are used specifically in the sensing area to improve light transmittance for optical module detection, while smaller pixel areas (first pixel areas) are used in non-sensing areas to maintain high resolution. This regional differentiation resolves the contradiction by optimizing each area for its specific function.
Data Source
AI summary
An optical module overlaps a sensing area of a liquid crystal panel that includes pixel areas. The pixel areas include second pixel areas having a larger size than first pixel areas and third pixel areas having a smaller size than the second pixel areas. The first pixel areas are outside the sensing area. The second pixel areas and the third pixel areas repeat in a first direction within the sensing area. A length of each third pixel area in the first direction is a same as a length of each first pixel area in the first direction. Each of the third pixel areas have a same length as each second pixel area in a second direction. Thus, the visibility of a boundary between an image in the second pixel areas and the third pixel areas and an image in the first pixel areas is reduced.