Display Pixel Layout for Switchable Privacy Viewing Angles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices struggle with maintaining privacy by limiting visibility from certain angles, as privacy screens are difficult to install and remove without damage.
Innovation Solution
A display device with narrow and wide pixels, where the narrow pixel can emit light in privacy mode and the wide pixel emits light in both normal and privacy modes, with channels providing different driving signals to sub-light emitting units, allowing for adjustable viewing angles and privacy control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a privacy screen is installed over the display device to limit visibility from certain angles, then privacy is improved, but the screen becomes difficult to remove and reinstall without damage
Solution Approach 1:
The display device is segmented into multiple pixel types (narrow pixels and wide pixels) with different light emission characteristics. Narrow pixels emit light in a restricted angular range for privacy protection, while wide pixels provide normal viewing. This segmentation allows privacy functionality to be integrated into the display itself rather than requiring a separate removable screen overlay.
Solution Approach 2:
The mechanical privacy screen overlay is replaced with an electronic control system that selectively activates narrow pixels and wide pixels based on desired viewing conditions. The controller adjusts which pixel types emit light, substituting a mechanical privacy solution with an electronic one that provides the same privacy function without the installation/removal problems.
2Adaptability or versatility
If narrow pixels are used to emit light in privacy mode, then privacy control is improved, but the device complexity increases due to multiple pixel types and channels
Solution Approach 1:
Both narrow pixels and wide pixels are integrated into the same display device and share common driving infrastructure (power supply, control circuitry). The same display panel and controller serve multiple functions: normal viewing mode using wide pixels, privacy mode using narrow pixels, and hybrid modes combining both. This multi-functionality reduces overall system complexity compared to separate display systems.
Solution Approach 2:
The patent merges narrow pixels and wide pixels within the same display panel, sharing common structural elements such as the substrate, pixel circuit layer, and driving channels. By combining different pixel types in a single integrated structure rather than using separate displays, the overall device complexity is managed while achieving versatile privacy control capabilities.
Data Source
AI summary
A display device includes a display panel including a narrow pixel, having a first light emitting unit, and a wide pixel, having a second light emitting unit. At least one channel is disposed on the display panel and provides a driving signal to the narrow pixel and the wide pixel. The first light emitting unit includes a (1_1)th sub-light emitting unit and a (1_3)th sub-light emitting unit, which are adjacent to each other in a first direction. The at least one channel includes a narrow channel which provides a first driving signal to the (1_1)th sub-light emitting unit and the (1_3)th sub-light emitting unit.