Stretchable Display Pixel Driving Circuit Resolution Maintenance
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Solution Overview
Problem
Stretchable display devices face a reduction in resolution due to increased pixel spacing when stretched, as existing technologies require additional circuits that thicken or widen the display.
Innovation Solution
An apparatus that generates a second pixel driving signal based on the stretching state of the display, using a combination of first pixel driving signals and power signals, to maintain resolution by dynamically adjusting the driving of second pixels through a second pixel driving circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If additional pixel driving circuits are added to maintain resolution after stretching, then display resolution is maintained, but device complexity and thickness increase
Solution Approach 1:
The patent combines the first pixel driving circuit and second pixel driving circuit into a single integrated circuit structure. The circuit uses shared components including power signal lines (ELVDD, ELVSS), switching transistors, and signal generation units, allowing both pixel types to be driven by one unified driving apparatus rather than separate independent circuits.
Solution Approach 2:
The pixel driving circuit is designed with multi-functionality to handle both first pixels (non-stretching regions) and second pixels (stretching regions). The same circuit generates different pixel driving signals based on stretching state detection, and the signal generation modules can adaptively switch between driving modes to serve multiple pixel types with a single circuit design.
2Manufacturing precision
If additional pixel driving circuits are added to maintain resolution after stretching, then display resolution is maintained, but display thickness increases
Solution Approach 1:
The patent combines the first pixel driving circuit and second pixel driving circuit into a single integrated circuit structure. The circuit uses shared components including power signal lines (ELVDD, ELVSS), switching transistors, and signal generation units, allowing both pixel types to be driven by one unified driving apparatus rather than separate independent circuits.
3Adaptability or versatility
If pixel spacing is increased to enable stretching, then display flexibility is improved, but resolution is reduced
Solution Approach 1:
The patent implements a dynamic pixel driving system that adapts to stretching states. The pixel driving circuit detects whether the display is stretched and dynamically generates appropriate driving signals: using first pixel driving signals for non-stretched regions and second pixel driving signals for stretched regions. This dynamic adaptation allows the display to maintain resolution across different stretching states.
Solution Approach 2:
The patent changes the driving parameters (pixel driving signals) based on the stretching state. When stretching occurs, the circuit switches from using first pixel driving signals to second pixel driving signals, effectively changing the operational parameters to compensate for the increased pixel spacing and maintain display resolution.
Data Source
AI summary
An apparatus for driving a stretchable display includes a first pixel driving signal generating module to generate a first pixel driving signal including data to be displayed on a stretchable display, a first pixel driving circuit to receive the first pixel driving signal to drive a first pixel, a second pixel driving circuit to drive a second pixel, wherein the driving of the second pixel is determined depending on whether the stretchable display is stretched, and a second pixel driving signal generating module to receive the first pixel driving signal and a power signal and to generate a second pixel driving signal to be applied to the second pixel driving circuit by using one of the first pixel driving signal and the power signal, based on a stretching state signal generated depending on whether the stretchable display is stretched.