Display Panel Sub-Frame Timing for Color LED Efficiency Balance
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Solution Overview
Problem
Existing display technologies using LEDs face challenges in improving luminous efficiency and reducing power consumption due to differences in luminous efficiency between light-emitting devices of different colors.
Innovation Solution
A display panel design where light-emitting devices with different emission colors are connected to separate pixel circuits, allowing for independent control of their light-emitting phase durations, with a sub-frame instantaneous luminance allocation rule that ensures each device operates at high current density and uniformity, optimizing luminous efficiency and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light-emitting devices of different colors are used to achieve color display, then color gamut and luminance are improved, but luminous efficiency varies between different color devices causing increased power consumption
Solution Approach 1:
The patent applies local quality by assigning different light-emitting phase durations to different color light-emitting devices based on their specific luminous efficiency characteristics. Each device operates with optimized timing parameters that match its efficiency profile, allowing high-efficiency devices to emit longer and low-efficiency devices to emit shorter durations, thereby balancing overall power consumption while maintaining high luminance output
Solution Approach 2:
The patent changes the operational parameters (light-emitting phase duration) of different light-emitting devices according to their luminous efficiency characteristics. By dynamically adjusting timing parameters rather than using uniform duration for all devices, the system optimizes the balance between luminance output and energy consumption across different color channels
2Use of energy by moving object
If different light-emitting phase durations are assigned to compensate for luminous efficiency differences, then luminous efficiency is improved, but device complexity increases due to independent control requirements
Solution Approach 1:
The patent segments the control of different light-emitting devices by assigning separate pixel circuits to each device, enabling independent control of light-emitting phase durations. This segmentation allows tailored timing control for each device type while maintaining modular architecture that simplifies the overall control system through standardized circuit designs
Solution Approach 2:
The patent introduces dynamic control capabilities by allowing variable light-emitting phase durations based on device characteristics and display requirements. The system can adapt timing parameters in real-time to optimize efficiency while maintaining manageable complexity through programmable control rather than hardware complexity
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
The design enhances luminous efficiency and reduces power consumption by compensating for efficiency differences between light-emitting devices, ensuring high luminance uniformity and efficient use of current density.
Implementation Method 1
light-emitting diodes (LEDs) are widely used in the display field
Implementation Method 2
the light-emitting device includes a first light-emitting device and a second light-emitting device with different emission colors
Data Source
AI summary
Display panel and display apparatus, display panel includes first and second light-emitting device with different emission colors, first pixel circuit is connected to first light-emitting device, and second pixel circuit is connected to second light-emitting device; one frame of display panel includes N sub-frames, where N is integer and N≥2; N sub-frames of pixel circuit include 1st sub-frame to Nth sub-frame ordered in ascending order of light-emitting phase duration; light-emitting device displays gray levels according to sub-frame instantaneous luminance allocation rule; first pixel circuit has light-emitting phase duration t11 in 1st sub-frame corresponding to it and light-emitting phase duration t12 in 2nd sub-frame corresponding to it; second pixel circuit has light-emitting phase duration t21 in 1st sub-frame corresponding to it and light-emitting phase duration t22 in 2nd sub-frame corresponding to it; and t11/t12>t21/t22.