Pixel Driving Circuit With Threshold Gates for Black-State Power Control
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Solution Overview
Problem
Display panels face increased power consumption due to the need for different black state voltages in pixel driving units with varying light-emitting elements, leading to inefficiencies in voltage utilization and power management.
Innovation Solution
A pixel driving circuit with threshold adjustment gates for drive transistors, allowing for adjustment of threshold voltages to align black state voltages across different pixel driving units, thereby optimizing voltage range utilization and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different black state voltages are applied to pixel driving units with varying light-emitting elements, then the display performance is maintained, but power consumption increases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the black state voltage parameter based on the specific light-emitting element characteristics. Instead of using fixed different voltages for different elements, the system measures the actual characteristics and adjusts the voltage parameter to match, achieving optimal performance with minimized power consumption.
Solution Approach 2:
The patent implements self-service through automatic measurement and adjustment mechanisms. The pixel driving circuit autonomously measures the characteristics of light-emitting elements and automatically adjusts the black state voltage without external intervention, thereby optimizing power consumption while maintaining display performance.
2Productivity
If threshold adjustment gates are added to drive transistors, then voltage range utilization is optimized, but device complexity increases
Solution Approach 1:
The threshold adjustment gate serves multiple functions: it adjusts the threshold voltage of the drive transistor, enables black state voltage optimization, and facilitates adaptive power management. This multi-functionality allows a single component to address multiple objectives, improving voltage range utilization without proportionally increasing overall circuit complexity.
Solution Approach 2:
The patent applies local quality by implementing threshold adjustment gates specifically at critical locations where voltage optimization is most needed. Rather than uniformly complicating the entire circuit, the adjustment mechanism is strategically placed to provide localized control over transistor threshold voltages, achieving system-level optimization through targeted modifications.
Data Source
AI summary
A pixel driving circuit and a display panel. The pixel driving circuit includes at least one first pixel driving unit and at least one second pixel driving unit. The first pixel driving unit includes a first drive transistor and a first light-emitting element, and the first drive transistor has a first threshold adjustment gate configured to receive a first adjustment signal. The second pixel driving unit includes a second drive transistor and a second light-emitting element, and the second drive transistor has a second threshold adjustment gate configured to receive a second adjustment signal. The first light-emitting element and the second light-emitting element have different light emitting colors, and when the first light-emitting element and the second light-emitting element 10 perform at a target grayscale, the first adjustment signal and the second adjustment signal have different voltage values.