Display Apparatus Emission Driver Lifespan Extension via Stress Distribution
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Solution Overview
Problem
Display apparatus emission drivers experience deterioration leading to flicker or flash phenomena, reducing their lifespan and the overall display apparatus' performance.
Innovation Solution
A display apparatus with dual emission drivers and a controller that selectively operates them based on deterioration stress, using data conversion, stress calculation, and lookup tables to distribute the stress and extend the lifespan by adjusting their usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single emission driver is used to drive the display panel, then the device complexity is reduced, but the emission driver experiences severe deterioration stress causing flicker or flash phenomena and reduced lifespan
Solution Approach 1:
The emission driver function is segmented into multiple independent emission drivers (first emission driver and second emission driver) disposed at different sides of the display panel. Each driver handles a portion of the emission signal generation, distributing the operational stress and preventing single-point failure, thereby extending the overall system lifespan while maintaining functional simplicity.
2Duration of action of stationary object
If multiple emission drivers are used to distribute deterioration stress, then the emission driver lifespan is extended, but the device complexity increases
Solution Approach 1:
Multiple emission drivers are merged into a unified system controlled by a single emission driver controller. The controller selectively activates the first or second emission driver based on their respective deterioration stress levels, managing the complexity centrally while allowing individual drivers to operate independently, thus extending lifespan without proportionally increasing overall system complexity.
Solution Approach 2:
The emission driver controller dynamically selects which emission driver to activate based on real-time deterioration stress assessment. This dynamic switching capability allows the system to adapt to the operational state of each driver, optimizing lifespan extension while maintaining controlled complexity through intelligent resource allocation.
3Productivity
If the emission driver operates continuously without selective control, then the productivity is maximized, but the deterioration stress accumulates rapidly reducing the useful life
Solution Approach 1:
The emission driver controller implements periodic assessment of deterioration stress levels and selectively activates different emission drivers based on their current state. This periodic evaluation and switching mechanism ensures continuous display operation (maintaining productivity) while distributing cumulative stress across multiple drivers, thereby extending the overall useful life of the emission driver system.
Data Source
AI summary
A display apparatus includes a display panel, a first emission driver, a second emission driver, and an emission driver controller. The first and second emission drivers are on different sides of the display panel, and each applies an emission signal to the display panel. The emission driver controller selectively drives the first emission driver and the second emission driver based on deterioration stress of the first and second emission drivers.