Pixel Circuit Switching for Split Privacy and Share Viewing Angles
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Solution Overview
Problem
Existing vehicle display technologies struggle to adjust viewing angles independently for different areas of the screen, making it difficult to display personal content with a narrow viewing angle and shared content with a wide viewing angle simultaneously.
Innovation Solution
A pixel circuit with first and second light-emitting elements, each emitting light at different viewing angles, controlled by switch elements activated by mode selection signals, allowing for a display panel to divide areas into share and privacy modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single viewing angle is used for the entire screen, then the structure is simple and easy to manufacture, but it cannot simultaneously display personal content with narrow viewing angle and shared content with wide viewing angle
Solution Approach 1:
The pixel circuit is divided into multiple independent light-emitting elements (first light-emitting element for wide viewing angle, second light-emitting element for narrow viewing angle). Each element can be independently controlled through separate switch elements, allowing different viewing angle modes to be activated in different screen areas simultaneously.
Solution Approach 2:
The pixel circuit incorporates switch elements that can dynamically change the connection state between different light-emitting elements based on mode selection signals. This allows the viewing angle characteristic of each pixel to be dynamically adjusted between wide and narrow modes, enabling flexible screen area division for different content types.
2Adaptability or versatility
If multiple light-emitting elements with different viewing angles are integrated into each pixel circuit, then independent viewing angle adjustment for different screen areas is achieved, but the device complexity increases
Solution Approach 1:
Each pixel circuit is designed as a multi-functional unit that can operate in different modes (wide viewing angle mode, narrow viewing angle mode) by selecting different light-emitting elements. This universal design allows the same pixel circuit structure to serve multiple purposes: displaying shared content with wide viewing angle or personal content with narrow viewing angle, depending on the activation state of different switch elements.
3Adaptability or versatility
If the screen is divided into multiple display areas with different viewing angles, then personal and shared content can be displayed simultaneously, but the manufacturing precision requirements increase
Solution Approach 1:
The pixel circuit is pre-configured with multiple light-emitting elements and switch elements during manufacturing, with each component positioned and connected according to its specific function. The wide viewing angle light-emitting element and narrow viewing angle light-emitting element are prepared in advance, along with their corresponding switch elements, so that no additional complex assembly or adjustment is needed during operation or installation.
Data Source
AI summary
A pixel circuit, a display panel and a display device including the same according to an exemplary embodiment are disclosed. The pixel circuit according to the exemplary embodiment includes a first light-emitting element, a second light-emitting element, a driving element configured to generate a driving current of each of the first and second light-emitting elements, a first switch element connected between a gate electrode of the driving element and a power line through which a reference voltage is applied and turned on in response to a first gate signal, a second switch element connected between the driving element and the first light-emitting element and turned on in response to a second gate signal, and a third switch element connected between the driving element and the second light-emitting element and turned on in response to a third gate signal, wherein the first light-emitting element emits light at a first viewing angle, and the second light-emitting element emits light at a second viewing angle smaller than the first viewing angle.