Flexible Display Deformation Sensing for Image Quality Control
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Solution Overview
Problem
Existing display apparatuses, particularly flexible and stretchable displays, face challenges in maintaining image quality and structural integrity during deformation, as they lack effective mechanisms to sense and adjust to changes in shape and size.
Innovation Solution
Incorporating a substrate with emission and non-emission areas, sensing lines, actuators, and a correction control system that measures deformation rates through resistance, capacitance, or waveform changes, and adjusts actuator operation to maintain display quality during stretching or shrinking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flexible and stretchable display structures are used to enable shape changes, then adaptability is improved, but maintaining image quality and structural integrity during deformation becomes difficult
Solution Approach 1:
The patent implements a dynamic correction system that continuously monitors substrate deformation through sensing lines and adjusts actuator positions in real-time. The correction control portion dynamically calculates correction values based on measured deformation rates and applies compensatory movements to actuators, enabling the display to maintain image quality adaptability while undergoing shape changes.
Solution Approach 2:
The patent employs a feedback mechanism where sensing lines detect substrate deformation and transmit signals to the correction control portion. The control portion processes this feedback information, calculates appropriate correction values, and adjusts actuator positions accordingly. This closed-loop feedback system ensures that image quality is maintained despite ongoing deformations of the flexible substrate.
2Reliability
If sensing lines and correction control systems are added to monitor and correct deformation, then image quality is maintained, but device complexity increases
Solution Approach 1:
The patent integrates multiple functions into unified components. The sensing lines serve both as structural elements of the display and as deformation detection sensors. The correction control portion combines deformation measurement, correction value calculation, and actuator control functions. This multi-functionality approach maintains image quality while minimizing the addition of separate dedicated components.
Solution Approach 2:
The patent merges the sensing function with the existing display structure by incorporating sensing lines into the substrate layout. The correction control system combines measurement, calculation, and control functions into an integrated unit. This merging strategy reduces overall system complexity while achieving the goal of maintaining image quality during deformation.
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 system effectively senses and corrects for deformation, ensuring consistent image quality and structural stability across various shapes and sizes, enhancing the performance of flexible and stretchable displays.
Implementation Method 1
The deformation rate of the substrate may be measured from at least one value from among a resistance change, a capacitance change, and a waveform change according to an electrical signal of the sensing line
Implementation Method 2
The deformation rate of the substrate may be measured from at least one value from among a resistance change, a capacitance change, and a waveform change according to an electrical signal of the sensing line
Implementation Method 3
the one or more actuators may include dielectric elastomer actuators each including a first electrode layer, an elastomer layer, and a second electrode layer
Data Source
AI summary
A display apparatus including: a substrate comprising a plurality of emission areas and a non-emission area between the plurality of emission areas; at least one light-emitting diode in each of the plurality of emission areas; a sensing line crossing the non-emission area; one or more actuators in the non-emission area; a sensing portion configured to sense a deformation rate of the substrate from the sensing line; and a correction control portion configured to drive the one or more actuators.