Flexible Display Bending Sensor Layout for Precise Image Control
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Solution Overview
Problem
Existing flexible display devices lack effective mechanisms to detect bending status for precise image display and control, limiting their functionality and performance.
Innovation Solution
A flexible display device with a substrate, light emitting units, a conductive layer, and anti-reflection layer, featuring non-overlapping bending sensor units that include first and second conductive layers with insulating layers, allowing for capacitive-type sensing of bending states through varying capacitance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If bending sensor units are added to detect bending status, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The bending sensor is divided into multiple independent sensor units, each capable of detecting bending in specific regions. This segmentation allows precise local detection while maintaining overall system manageability and reducing the complexity of integrating a single complex sensor across the entire display.
Solution Approach 2:
The patent replaces complex mechanical bending sensors with capacitive sensing mechanisms formed by conductive layers and insulating layers. This substitution uses electrical field changes instead of mechanical contact, significantly reducing device complexity while maintaining high measurement precision for bending status detection.
2Area of moving object
If control units are made smaller to reduce area, then area occupied is reduced, but reliability may worsen
Solution Approach 1:
The control units are designed as thin-film structures integrated into the flexible display layers. This thin-film design reduces the area occupied by control units while inherently increasing reliability by eliminating sharp corners and stress concentration points that would cause cracking during flexing operations.
Solution Approach 2:
The control unit structure is designed to dynamically adapt to bending stresses through flexible interconnections and elastic deformations. This dynamic design allows the control units to maintain functionality in reduced sizes while preventing crack formation by distributing mechanical stresses throughout the flexible structure.
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
Enables precise detection of bending states, enhancing image display control and reducing the probability of cracks during flexing, while maintaining sensitivity and reducing the area occupied by control units.
Implementation Method 1
featuring non-overlapping bending sensor units that include first and second conductive layers with insulating layers, allowing for capacitive-type sensing of bending states through varying capacitance
Data Source
AI summary
The present disclosures provides an electronic device that includes a substrate, a plurality of light emitting units disposed on the substrate, a first conductive layer disposed on the plurality of light emitting units, and an anti-reflection layer disposed on the first conductive layer and overlapped with the plurality of light emitting units. The first conductive layer includes a plurality of first openings. In a top view of the electronic device, at least a portion of the plurality of first openings expose at least a portion of the plurality of light emitting units respectively.