Rollable Display Foreign Substance Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Rollable electronic devices face issues with foreign substances entering the housing when the display is inserted or extracted, leading to operational problems.
Innovation Solution
An electronic device with a flexible display that includes a rolling area, a driving device for sliding the housing, and light emitting and receiving circuits to detect abnormal states and provide visual notifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flexible display is made insertable/extractable to change display area, then the adaptability is improved, but foreign substances may enter the housing causing operational problems
Solution Approach 1:
A seal member is introduced as an intermediary component between the first housing and second housing to prevent foreign substances from entering the housing during display insertion/extraction operations. The seal member specifically seals the opening through which the flexible display passes, resolving the contradiction by enabling display area adjustability while blocking contamination pathways.
2Measurement precision
If light emitting and receiving circuits are added to detect abnormal states, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The light emitting circuit and light receiving circuit are integrated into existing display control infrastructure, allowing the same optical components to serve multiple functions: normal display operation and abnormal state detection. This multi-functionality approach enables precise detection of foreign substances and display defects without proportionally increasing device complexity.
Solution Approach 2:
The light receiving circuit provides feedback signals to the processor when abnormal states are detected (such as foreign substances on the display surface). This feedback mechanism enables automatic response actions, including displaying notification information and preventing further display insertion, thereby achieving precise measurement with controlled complexity through intelligent system response.
3Object-affected harmful factors
If the display area is reduced to prevent foreign substance entry, then the harmful factors are reduced, but the productivity of display usage is decreased
Solution Approach 1:
The system performs preliminary detection using light emitting and receiving circuits before allowing display insertion to proceed. By detecting the presence of foreign substances in advance and providing feedback to the processor, the system prevents contamination issues before they occur, while still maintaining full display functionality when the environment is clean. This resolves the contradiction by enabling selective display area adjustment based on real-time conditions.
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
The device effectively identifies and responds to abnormal states in the display area, such as foreign substances or expanded areas, by adjusting the display area and providing visual notifications to the user.
Implementation Method 1
a light emitting circuit disposed at an end of the first housing, which is the rolling area where the flexible display is bent
Implementation Method 2
a light receiving circuit disposed at another end of the first housing, which is the rolling area where the flexible display is bent
Data Source
AI summary
An electronic device according to an embodiment an electronic device includes a first housing, a second housing, a flexible display, a drive device, a light-emitting circuit, a light-receiving circuit, and at least one processor operably coupled with the flexible display, the drive device, the light-emitting circuit, and the light-receiving circuit. The at least one processor is configured to emit light by using the light-emitting circuit on the basis of extraction or insertion of the flexible display, identify an abnormal state in a display area of the flexible display by using the light-receiving circuit, and in response to the identification, provide a visual notification of the abnormal state in the display area of the flexible display.