Display Pixel Group Control for Privacy Viewing and Image Stability
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Solution Overview
Problem
Existing electronic devices face issues with exposing user information to third parties in public settings due to non-adjustable viewing angles, and attaching polarizer films can be costly and problematic for foldable devices.
Innovation Solution
A method for controlling pixel groups in a display, including first and second type sub-pixels with different viewing angles, adjusts turn-on ratios based on gradation values to provide stable display quality and control information exposure according to user intent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a polarizer film is attached on the front surface of the display to prevent information exposure, then information security is improved, but manufacturing cost increases and folding operation becomes problematic
Solution Approach 1:
The display is divided into multiple pixel types (first type pixels with wider viewing angle and second type pixels with narrower viewing angle) arranged in different regions. This segmentation allows different parts of the display to have different viewing angle characteristics, providing information security without requiring additional polarizer films.
Solution Approach 2:
Different regions of the display are assigned different pixel types with locally optimized viewing angles. The second type pixels with narrower viewing angles are placed in regions where information security is prioritized, while first type pixels with wider viewing angles are used in other regions, achieving localized information protection without affecting the entire display structure.
2Reliability
If the viewing angle is adjusted to control information exposure, then information security is improved, but display quality stability deteriorates
Solution Approach 1:
The processor dynamically adjusts the turn-on ratios of first type pixels and second type pixels based on the displayed content and viewing conditions. This dynamic control allows the display to adaptively optimize both information security and display quality stability by varying pixel activation patterns without physical structural changes.
Solution Approach 2:
The turn-on ratios of different pixel types are adjusted as controllable parameters to achieve desired viewing angle characteristics. By changing these operational parameters rather than physical structures, the system maintains display quality stability while controlling information exposure.
3Reliability
If different pixel types with different viewing angles are used, then information security is improved, but manufacturing precision requirements increase
Solution Approach 1:
The display employs asymmetric pixel arrangements with different types of pixels (first type with wider viewing angle, second type with narrower viewing angle) in different regions. This asymmetric design achieves information security through functional differentiation rather than precise symmetric positioning, reducing manufacturing precision requirements.
Data Source
AI summary
An electronic device is provided. The electronic device includes a display including a plurality of pixels, and a processor, each of a plurality of pixels may include a plurality of sub pixels, the plurality of sub pixels may include first type pixels including first type sub pixels observed at a first viewing angle, and second type pixels being adjacent to the first type pixels and including second type sub pixels observed at a second viewing angle that is smaller than the first viewing angle, and the processor configured to, for a plurality of groups including first type pixels and second type pixels, perform a control such that turn-on ratios of the first type pixels and the second type pixels in, a plurality of groups, a first group are different from turn-on ratios of those of, among the plurality of groups, a second group that is different from the first group.