Display Panel Privacy Light Emission Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display technologies face challenges in conveniently and quickly switching between sharing and privacy states, with manual methods like privacy films and liquid crystal layers being inconvenient and increasing screen thickness.
Innovation Solution
A display panel design featuring a driver backplane, pixel definition layer, light-emitting devices with normal and privacy elements, and touch lines with specific wiring configurations that allow for controlled light emission angles, enabling seamless switching between sharing and privacy states without physical attachments or thickness increases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual privacy films or liquid crystal layers are used to switch between sharing and privacy states, then privacy protection is improved, but device complexity and screen thickness increase
Solution Approach 1:
The display panel is segmented into multiple light-emitting devices within each pixel, including normal light-emitting devices for sharing state and privacy light-emitting devices for privacy state. This segmentation allows independent control of different light-emitting devices to achieve state switching without adding external privacy films or liquid crystal layers, thereby improving privacy protection while avoiding increased device complexity
Solution Approach 2:
The privacy function is merged into the display panel structure itself by integrating privacy light-emitting devices alongside normal light-emitting devices. The touch line and its wiring are combined with the pixel structure, and the privacy element is integrated within the same pixel definition layer openings. This merging eliminates the need for separate privacy films or liquid crystal layers, reducing device complexity while maintaining privacy protection capability
Solution Approach 3:
The patent uses the spatial dimension by arranging different types of light-emitting devices (normal and privacy) in specific spatial patterns within the pixel array. The touch line wiring is arranged in specific dimensional patterns with different line widths at different locations. This dimensional arrangement enables state switching through spatial control of light emission rather than through additional functional layers, avoiding thickness increase while achieving privacy protection
2Reliability
If manual privacy films or liquid crystal layers are used to switch between sharing and privacy states, then privacy protection is improved, but ease of operation deteriorates due to manual attachment and removal
Solution Approach 1:
The display panel performs the privacy switching function automatically through electrical control of different light-emitting devices. The system serves itself by using the touch line and pixel circuit to control which light-emitting devices emit light, eliminating the need for manual attachment or removal of privacy films. This self-service mechanism improves ease of operation while maintaining privacy protection
Solution Approach 2:
The manual mechanical operation of attaching and removing privacy films is replaced by an electrical control system. The pixel circuit receives control signals to selectively activate normal or privacy light-emitting devices, substituting mechanical film manipulation with electrical switching. This replacement dramatically improves ease of operation while maintaining privacy protection capability
3Reliability
If the touch line wiring is optimized to shield light from privacy elements, then privacy protection is improved, but manufacturing precision requirements increase
Solution Approach 1:
The touch line wiring is designed with local quality variations, where the line width changes at different locations. The wiring has greater line width in regions closer to privacy light-emitting devices to enhance light shielding, and appropriate line width in other regions. This localized optimization improves privacy protection while making manufacturing more feasible by not requiring uniformly high precision across the entire wiring
Solution Approach 2:
The wiring parameters (line width, position) are changed based on their functional requirements. The touch line wiring parameters are adjusted to have greater line width in specific regions to block light from privacy elements, while maintaining other parameters within standard manufacturing capabilities. This parameter optimization improves privacy protection without excessively increasing manufacturing precision requirements
Data Source
AI summary
Provided is a display panel, including a driver backplane, a pixel definition layer, a plurality of light-emitting devices, and a touch line. A plurality of openings are formed in the pixel definition layer. The light-emitting device includes a normal element and at least one privacy element, which are disposed in different openings. The touch line includes a first wiring and a second wiring. An orthographic projection of the first wiring on the driver backplane falls on a periphery of an orthographic projection of the opening, where the privacy element is disposed, on the driver backplane. A distance between an orthographic projection of the second wiring on the driver backplane and the orthographic projection of the opening on the driver backplane is greater than a distance between the orthographic projection of the first wiring on the driver backplane and the orthographic projection of the opening on the driver backplane.