Display Pixel Segmentation for Adjustable Privacy Regions
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Solution Overview
Problem
Existing display devices struggle to provide privacy by limiting the viewing angle to specific regions without compromising the visibility of the entire image, especially in vehicles where both front and side users need different viewing angles.
Innovation Solution
A display device with alternating rows of pixels having different viewing angles, where odd-numbered rows emit light with a narrow viewing angle and even-numbered rows emit light with a wide viewing angle, controlled by a panel driver to set a privacy region and a public region based on position information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the entire display panel uses pixels with narrow viewing angles for privacy mode, then privacy protection is improved, but the viewing angle for side users deteriorates
Solution Approach 1:
The display panel is segmented into different pixel types arranged in alternating rows: first pixels with narrow viewing angles for privacy protection and second pixels with wide viewing angles for side visibility. This segmentation allows different regions to serve different viewing angle requirements simultaneously
Solution Approach 2:
Different pixels are assigned different viewing angle characteristics based on their location and function. First pixels in odd rows provide narrow viewing angles for privacy-protected content, while second pixels in even rows provide wide viewing angles for public information, creating local quality variations across the display
2Length of moving object
If the entire display panel uses pixels with wide viewing angles for public mode, then visibility for side users is improved, but privacy protection deteriorates
Solution Approach 1:
The display panel is divided into alternating rows of first pixels (narrow viewing angle) and second pixels (wide viewing angle). This segmentation enables the display to provide both wide viewing angle coverage and privacy protection simultaneously by assigning different viewing characteristics to different pixel groups
Solution Approach 2:
Second pixels in even rows are configured with wide viewing angles to ensure visibility for side users, while first pixels in odd rows maintain narrow viewing angles for privacy protection. This local quality differentiation allows the display to serve multiple viewing angle requirements within the same panel
3Adaptability or versatility
If alternating rows of different pixel types are used, then both privacy and public viewing angles are improved, but device complexity increases
Solution Approach 1:
The display panel is segmented into alternating rows of first pixels and second pixels with different viewing angle characteristics. This regular segmentation pattern, while increasing pixel type diversity, uses a predictable alternating structure that simplifies control logic compared to irregular patterns
Solution Approach 2:
The display device can dynamically switch between public mode and privacy mode by controlling which pixel types are activated. In public mode, both first and second pixels are used for wide viewing angle coverage, while in privacy mode, only first pixels are activated for narrow viewing angle privacy protection
Data Source
AI summary
A display device includes a display panel including first pixels arranged in a first row and second pixels arranged in a second row. A viewing angle of the first pixels is different from a viewing angle of the second pixels. The first pixels and the second pixels are disposed in a privacy region of the display panel and a public region of the display panel which is different from the privacy region. The display device further includes a panel driver configured to receive privacy region position information indicating a position of the privacy region, and drive the display panel such that the first pixels emit light in the privacy region of the display panel and the second pixels emit light in the public region of the display panel.