Portable Terminal Projection Screen Weight Reduction
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Solution Overview
Problem
Conventional double-screen notebook computers with liquid crystal display screens face challenges in being lightweight and slim due to the weight of both main and auxiliary screens, and they often struggle with maintaining projection functionality during screen rotation.
Innovation Solution
A display control method for a portable terminal that includes a main screen, a host, and a projection screen acting as an auxiliary screen, where the projection module is connected with a display control module to adjust and project images based on the projection angle, allowing the auxiliary screen to protrude and rotate while maintaining normal projection functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If both main screen and auxiliary screen use liquid crystal display screens, then display quality is guaranteed, but the weight of the portable terminal increases
Solution Approach 1:
The patent extracts the liquid crystal display screen from the auxiliary screen and replaces it with a projection screen. The auxiliary screen is transformed from a self-contained display device to a projection surface, eliminating the need for heavy LCD components while maintaining display functionality through the projection module.
Solution Approach 2:
The patent uses a projection screen that can display images projected by the projection module, effectively creating a visual copy of the display function without the physical weight of a liquid crystal display screen. The projection screen replicates the display capability through optical projection rather than electronic pixel control.
2Adaptability or versatility
If the auxiliary screen is made rotatable to enhance flexibility, then display adaptability improves, but projection functionality may be interrupted
Solution Approach 1:
The patent implements a dynamic control mechanism that adjusts the projection module's working state based on the auxiliary screen's rotation angle. The system transitions between projection and non-projection modes seamlessly, allowing the screen to rotate freely without compromising projection functionality when needed.
Solution Approach 2:
The patent employs a rotation angle detection mechanism that provides feedback to the control module. Based on this feedback, the system automatically adjusts the projection module's operation, ensuring that projection functionality is maintained when the screen is in appropriate orientations and deactivated when rotation prevents proper projection.
3Adaptability or versatility
If the projection module is added to enable projection display, then display versatility improves, but device complexity increases
Solution Approach 1:
The patent designs the projection module to serve multiple functions: it can project images onto the auxiliary screen during normal operation, and it can also function as a standalone projection device when the auxiliary screen is not in use. This multi-functionality justifies the added complexity by providing versatile display capabilities across different scenarios.
Solution Approach 2:
The patent merges the projection module with the existing display system architecture, integrating it into the host's overall structure. The projection module shares resources such as power supply, control signals, and physical space with the main display system, thereby reducing the incremental complexity that would result from a completely separate projection system.
Data Source
AI summary
A display control method of a portable terminal and a portable terminal are described where, the portable terminal includes a main screen, a host and a display control module, a projection screen as an auxiliary screen set on the main screen, the auxiliary screen is overlapped with the main screen as in a non-usage state, and protrudes from the main screen as in a usage state. The projection module is set in the host, and the projection module is connected with the display control module. The present invention reduces the weight of the portable terminal while guaranteeing the double-screen display.