Privacy Display Pixel Structure for Switchable Viewing Angles
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Solution Overview
Problem
Existing electronic devices lack the ability to dynamically adjust display states to provide privacy and visibility based on user needs, such as narrowing the viewing angle to protect sensitive information from unintended viewers.
Innovation Solution
The display includes first and second sub-pixels with different viewing angles, where the first sub-pixels have narrower viewing angles due to opaque members overlapping the light-emitting regions, and the display driving circuitry controls the activation and deactivation of these sub-pixels to switch between states, allowing for privacy mode by reducing the overall viewing angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display uses a single uniform sub-pixel structure, then the manufacturing process is simple, but the display cannot provide different viewing angles for privacy protection
Solution Approach 1:
The display is divided into a first portion with first sub-pixels and a second portion with second sub-pixels. Each portion has different partition wall structures, enabling different viewing angles in different regions of the same display
Solution Approach 2:
Different portions of the display have different local structures: the first portion has partition walls with opaque members for narrow viewing angle, while the second portion has simpler partition walls for wide viewing angle, allowing each region to have optimized properties for its intended use
2Object-affected harmful factors
If the display always maintains a narrow viewing angle for privacy, then sensitive information is protected, but the display visibility for normal use is reduced
Solution Approach 1:
The display can dynamically switch between different states by activating different portions: in the first state, both first and second sub-pixels are activated for normal wide viewing angle; in the second state, only first sub-pixels are activated for narrow viewing angle privacy protection
Solution Approach 2:
The display is segmented into controllable portions with different sub-pixel types, allowing selective activation of first sub-pixels for privacy mode or both first and second sub-pixels for normal mode, enabling dynamic adjustment of privacy level
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables the display to adapt to user privacy needs by narrowing the viewing angle in private mode, protecting sensitive information from unintended viewers while maintaining visibility in normal mode, thus enhancing user privacy.
Implementation Method 1
a portion of each of the plurality of first opaque members may overlap a portion of the first light-emitting region such that the first viewing angle is narrower than the second viewing angle
Data Source
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AI summary
A display is provided. The display may comprise: a light-emitting layer which includes a first light-emitting area and a second light-emitting area adjacent to the first light-emitting area, the size of the first light-emitting area being the same as the size of the second light-emitting area; an encapsulation layer which is disposed on the light-emitting layer; a filter layer which is disposed on the encapsulation layer; and an opaque member which is disposed on the filter layer, partially overlaps the first light-emitting area when viewing the front surface of the display such that light emitted from the first light-emitting area is limited to a first viewing angle range, and does not overlap the second light-emitting area when viewing the front surface of the display such that the light emitted from the first light-emitting area is limited to a second viewing angle range wider than the first viewing angle range.