Stretchable Display Optical Sensor Control Under Tensile Deformation

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Solution Overview

Problem

Stretchable displays' deformation leads to changes in the light shielding and transmitting areas, affecting the transmittance and light reception of optical sensors, resulting in inefficient operation or malfunctions.

Innovation Solution

An electronic device with a stretchable display, an optical sensor, and a tensile information detection sensor, where a processor identifies and adjusts operation parameters based on tensile information to compensate for changes in light reception, ensuring optimal operation of both the optical sensor and the display.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the stretchable display is deformed to enable flexible form factors, then adaptability and ease of carrying are improved, but the light transmittance changes causing optical sensor malfunction

Engineering Contradiction:

Improveflexible form factorVSAvoidoptical sensor operation

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system performs preliminary detection of tensile information before the optical sensor takes measurement. By detecting the deformation state of the stretchable display in advance, the system can determine whether the display is in a normal or deformed state, and accordingly adjust the optical sensor's operation parameters or filter abnormal data, preventing sensor malfunction caused by deformation-induced transmittance changes

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system establishes a feedback loop where tensile information detection sensors continuously monitor the stretchable display's deformation state, and this information is fed back to control the optical sensor's operation. Based on the real-time deformation feedback, the system dynamically adjusts the optical sensor's working parameters or data processing approach, ensuring reliable operation across different display states

Inventive Principle:

Principle #23Feedback

2Adaptability or versatility

If the stretchable display is deformed, then the light shielding area and transmitting area ratio changes, but this causes light reception amount variation leading to measurement inaccuracy

Engineering Contradiction:

Improvedisplay deformation capabilityVSAvoidoptical sensor measurement

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The system changes the operational parameters of the optical sensor based on the detected tensile information. When the stretchable display is deformed, the system adjusts parameters such as exposure time, gain, or threshold values to compensate for the changed light transmittance, thereby maintaining measurement precision across different deformation states

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The tensile information detection sensor acts as an intermediary between the stretchable display and the optical sensor. It provides intermediate information about the display's deformation state, allowing the system to mediate the optical sensor's operation to account for transmittance changes, thus preserving measurement accuracy despite display deformation

Inventive Principle:

Principle #24Intermediary (Mediator)

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

This solution ensures stable and efficient operation of optical sensors and stretchable displays by dynamically adjusting parameters in response to deformation, preventing malfunctions and improving interpretation accuracy.

Implementation Method 1

a tensile information detection sensor configured to detect tensile information of the stretchable display

Methodology Applied

Scientific EffectTensile detection:

Implementation Method 2

the transmittance of a display module and the light reception amount of an optical sensor located under or in a lower part of the stretchable display may be changed

Methodology Applied

Scientific EffectLight transmission:

Data Source

PatentUS20230260439A1Method, electronic device, and storage medium for controlling optical sensor on basis of tensile information of stretchable display

Publication Date: 2023.08.17 SAMSUNG ELECTRONICS CO LTD

AI summary

An electronic device is provided. The electronic device includes a stretchable display, an optical sensor disposed under or in the stretchable display, a tensile information detection sensor for detecting tensile information of the stretchable display, and at least one processor operatively coupled to the stretchable display, the optical sensor, and the tensile information detection sensor, wherein the at least one processor is configured to identify the tensile information of the stretchable display through the tensile information detection sensor, and identify or adjust, based on the tensile information, a value of an operation parameter of at least one of the optical sensor or the stretchable display, and the at least one of the optical sensor or the stretchable display may be configured to operate based on the identified or adjusted value of the operation parameter.