Display Pixel Group Control for Privacy Viewing Angle Management
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Solution Overview
Problem
Existing electronic devices face the challenge of exposing user information to unintended viewers due to varying viewing angles, particularly in public settings, and attaching polarizer films can be costly and disruptive to device functionality.
Innovation Solution
A method for controlling pixel groups in a display, where first and second type sub-pixels are used to adjust viewing angles, allowing for differential turn-on ratios based on gradation values, thereby providing stable display quality and controlling information exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a polarizer film is attached on the front surface of a display to prevent information exposure, then information security is improved, but device cost increases and folding operation becomes problematic
Solution Approach 1:
The patent extracts the privacy protection function from the external polarizer film and integrates it into the pixel structure itself through directional light emission characteristics of different sub-pixel types, eliminating the need for separate privacy films while maintaining information security
Solution Approach 2:
The pixel structure is designed to simultaneously provide display function and privacy protection function through the inherent optical characteristics of first and second type sub-pixels, making the display panel multi-functional without adding separate components
2Ease of operation
If the viewing angle is increased to improve observability, then ease of operation is improved, but information exposure to third persons increases
Solution Approach 1:
Different sub-pixels (first type and second type) are designed with different light emission angular characteristics, where first type sub-pixels emit light at wider angles for better observability while second type sub-pixels emit light at narrower angles for privacy protection, creating local optical quality differences within the pixel structure
Solution Approach 2:
The patent uses asymmetric pixel arrangements with different types of sub-pixels having different viewing angle characteristics, breaking the symmetry of uniform pixel emission to achieve both wide observability and narrow privacy protection in different directions
3Loss of information
If differential turn-on ratios of pixel groups are applied to control viewing angles, then information security is improved, but display quality stability may deteriorate
Solution Approach 1:
The patent dynamically adjusts the turn-on ratios of different pixel groups based on viewing angle requirements and content characteristics, allowing the display to adapt between privacy protection mode and quality display mode, making the system flexible rather than static
Solution Approach 2:
The patent changes the operational parameters (turn-on ratios) of different pixel groups to achieve privacy protection while maintaining display quality, using parameter adjustment rather than structural modification to balance security and quality
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.