Display Driving Controller Variable Compensation Period
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Solution Overview
Problem
Existing electronic devices face challenges in maintaining consistent display quality, particularly in adjusting luminance levels effectively across different target luminance values and ambient temperatures, which can lead to luminance deviations and compromised display performance.
Innovation Solution
The electronic device incorporates a memory and a driving controller that manage emission signals with a compensation period and an emission period, adjusting the compensation time based on target luminance. Additionally, it includes a voltage generator that determines initialization voltage levels for different color pixels based on luminance deviations, optimizing display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a fixed compensation period is used for all target luminance values, then the display device structure is simple, but the display quality deviates under different target luminance and ambient temperature conditions
Solution Approach 1:
The patent applies dynamics by making the compensation period variable rather than fixed. The driving controller dynamically adjusts the compensation period duration based on the target luminance value, allowing the system to adapt to different display conditions and maintain consistent display quality across various operating scenarios.
Solution Approach 2:
The patent changes the parameter of compensation period duration according to target luminance. By varying this time parameter based on the desired luminance level and ambient temperature conditions, the system optimizes the compensation effect for each operating condition, thereby improving display quality consistency.
2Manufacturing precision
If the compensation period is extended to improve luminance compensation accuracy, then display quality improves, but the emission period is reduced which may affect response time
Solution Approach 1:
The system dynamically balances the compensation period and emission period based on target luminance conditions. Under low luminance conditions, the compensation period is extended to improve accuracy, while under high luminance conditions, the emission period is extended to maintain response speed, achieving optimal performance for each scenario.
Solution Approach 2:
The patent changes the duration parameters of both compensation period and emission period based on target luminance values. By adjusting these time parameters dynamically, the system optimizes the trade-off between compensation accuracy and response speed for different operating conditions.
3Manufacturing precision
If initialization voltage is adjusted for different color pixels to compensate for luminance deviation, then display uniformity improves, but the control complexity increases
Solution Approach 1:
The patent applies local quality by providing different initialization voltages to different color pixels (red, green, blue) based on their specific luminance characteristics. Each color pixel receives a customized initialization voltage that compensates for its inherent luminance deviation, thereby improving overall display uniformity while maintaining manageable control complexity through standardized voltage levels for each color channel.
Data Source
AI summary
A display device includes: a memory, a driving controller, a light emitting element, a first transistor including a first electrode, a second electrode, and a gate electrode for receiving a data signal, a second transistor connected between a first driving voltage line and the first electrode of the first transistor and receiving a first emission signal, and a third transistor connected between the second electrode of the first transistor and the light emitting element and receiving a second emission signal. The first emission signal includes a compensation period and an emission period, and the memory stores instructions that, when executed by the driving controller, cause the driving controller to determine a compensation time of the compensation period depending on target luminance.