Display Device With Dual-Viewing-Angle Subpixels for Privacy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices face issues with information leakage to unauthorized viewers and environmental impact from manufacturing processes, necessitating a solution that controls viewing angles without security films and reduces greenhouse gas emissions.
Innovation Solution
A display device with subpixels featuring first and second mode subpixels having different viewing angles, controlled by transistors and light emitting elements, allowing selective adjustment of viewing angles to enhance privacy and reduce environmental footprint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a security film is used to control viewing angle, then privacy protection is improved, but device complexity and user management burden increase
Solution Approach 1:
The patent extracts the viewing angle control function from the external security film and integrates it directly into the display device by providing different viewing angles for red, green, and blue subpixels. This eliminates the need for separate security films while maintaining privacy protection functionality.
Solution Approach 2:
The display device structure itself is designed to perform multiple functions: it displays information and simultaneously controls viewing angles to prevent unauthorized access. The different viewing angles for different color subpixels create a built-in security mechanism that works universally across the display.
2Object-affected harmful factors
If traditional security films are used, then viewing angle control is achieved, but ease of operation deteriorates due to separate film management
Solution Approach 1:
The patent merges the security function with the display structure by integrating viewing angle control directly into the subpixel arrangement. Users no longer need to separately attach or manage security films; the security function is built-in and operates automatically with normal display operation.
Solution Approach 2:
The display device provides self-service security protection through its inherent structure. The different viewing angles of subpixels automatically prevent unauthorized viewing without requiring user intervention for film management, making the security function transparent and effortless for users.
3Object-affected harmful factors
If security films are implemented, then privacy control is improved, but manufacturing environmental impact worsens due to additional materials
Solution Approach 1:
The patent removes the need for separate security film materials by extracting the viewing angle control function and implementing it through the display's native subpixel structure. This eliminates the manufacturing and disposal of additional security films, reducing greenhouse gas emissions and material waste.
Solution Approach 2:
The design eliminates the need to manufacture, distribute, and dispose of separate security films. By using the existing display structure for security control, the patent prevents the entire lifecycle environmental impact associated with security film production and waste.
Data Source
AI summary
In one or more examples, a display device is provided, which includes a display panel including a display area provided with a plurality of subpixels and a bezel area. Each of the plurality of subpixels includes a first mode subpixel having a first viewing angle and including a first light emitting element, a second mode subpixel having a second viewing angle and including a second light emitting element, a driving transistor connected to the first light emitting element or the second light emitting element, first and second control transistors controlling the connection between the first light emitting element and the driving transistor, and third and fourth control transistors controlling the connection between the second light emitting element and the driving transistor.