Pixel Usage Modification for Display Burn-In Prevention
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Solution Overview
Problem
Modern computing devices with display devices, such as smartphones, experience differential aging where certain pixels dim over time due to uneven usage, leading to inaccurate image production and potential 'burn-in' of displayed content, known as display ghosting or burn-in.
Innovation Solution
A computing system monitors pixel usage and adjusts the intensity of less-used pixels to match more frequently used ones, ensuring all pixels are activated to a target usage level, thereby reducing differential aging and maintaining image accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If pixels are activated at their original specified intensities to present graphical content, then image quality is maintained, but differential aging occurs among pixels leading to display ghosting or burn-in
Solution Approach 1:
The patent modifies pixel activation parameters by increasing the intensity of less-used pixels beyond their original specified intensities. This parameter change equalizes the usage levels across all pixels, preventing differential aging while maintaining overall image quality through compensatory adjustments.
Solution Approach 2:
The system dynamically adjusts pixel intensities based on monitored usage levels. Pixels that are used less frequently are activated at higher intensities, while heavily used pixels maintain their original intensities. This dynamic adjustment ensures uniform aging across all pixels while preserving the intended graphical content presentation.
2Reliability
If less-used pixels are activated at increased intensities to equalize usage, then differential aging is reduced, but energy consumption increases
Solution Approach 1:
The patent applies different intensity adjustments to different pixels based on their individual usage patterns. Only less-used pixels receive increased intensity activation, while heavily used pixels maintain their original intensities. This localized approach equalizes overall usage across the display while minimizing unnecessary energy consumption from already-sufficiently-used pixels.
3Reliability
If pixel usage is monitored and adjusted in real-time, then pixel aging is equalized, but system complexity increases
Solution Approach 1:
The system implements a feedback mechanism where pixel usage levels are continuously monitored and this information is used to adjust activation intensities. The computing system identifies pixels whose usage levels fall below target thresholds and selectively increases their activation intensities, creating a closed-loop control system that equalizes pixel aging without requiring complete redesign of the display architecture.
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 approach extends the lifespan of display devices, reduces manufacturing time and costs, and maintains image quality by evenly aging all pixels, eliminating the need for initial pixel aging during manufacturing.
Implementation Method 1
each pixel has a corresponding electronic component (e.g., a diode) that generates light when activated with electricity
Implementation Method 2
The display device comprises an organic light-emitting diode display device
Data Source
AI summary
In general, the subject matter described in this disclosure can be embodied in methods, systems, and program products for modifying usage of display device pixels. A computing system monitors usage of a plurality of pixels of a display device and determines a target usage level. The computing system identifies that a usage level of a first pixel does not satisfy the target usage level and selects an occasion at which to present the first pixel in a frame to be presented by the display device with an increased intensity with respect to an original intensity that was specified for the first pixel by the frame. The computing system activates the first pixel at the increased intensity during presentation by the display device of the frame.