Display Driver Circuit for Multi-Area Frame Rate Boosting

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Solution Overview

Problem

Existing multi-area frame rate (MAFR) display panel technologies are limited by RC loading bottlenecks, preventing frame rate upgrades beyond the base rate, such as not being able to increase from 120 Hz to 144 Hz.

Innovation Solution

A display driver circuit with a gate signal control circuit that allows the display panel to operate in a frame rate boost mode by adjusting the pulse width of clock signals for different areas of the panel, enabling higher frame rates in specific areas while maintaining lower frame rates in others.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If the frame rate of the display panel is increased, then the dynamic performance is enhanced, but the power consumption increases and visual issues occur

Engineering Contradiction:
Improveframe rateVSAvoidpower consumption
Core Design Contradiction:
SpeedVSUse of energy by moving object

Solution Approach 1:

The patent divides the display panel into multiple areas with different frame rates. The first area displays content at a first frame rate while the second area displays content at a second frame rate that is higher than the first frame rate. This allows different regions of the display to have different quality characteristics, enabling high frame rate performance in specific areas without requiring the entire panel to operate at high frame rates, thus reducing overall power consumption.

Inventive Principle:
Principle #3Local quality

2Speed

If the frame rate of the display panel is increased, then the dynamic performance is enhanced, but visual issues such as flicker occur

Engineering Contradiction:
Improveframe rateVSAvoidvisual issues
Core Design Contradiction:
SpeedVSObject-affected harmful factors

Solution Approach 1:

The patent implements different frame rates for different areas of the display panel. The first area operates at a lower frame rate suitable for static or less dynamic content, while the second area operates at a higher frame rate for dynamic content. This localized approach ensures that areas requiring high frame rates for visual quality receive it, while other areas maintain acceptable visual performance at lower frame rates, avoiding overall visual issues.

Inventive Principle:
Principle #3Local quality

3Use of energy by moving object

If multi-area frame rate technology is used to reduce frame rate and save power, then power consumption is reduced, but the maximum frame rate cannot exceed the base frame rate

Engineering Contradiction:
Improvepower consumptionVSAvoidframe rate flexibility
Core Design Contradiction:
Use of energy by moving objectVSAdaptability or versatility

Solution Approach 1:

The patent makes the frame rate dynamic and adjustable for different areas of the display panel. The display panel is configured to display content in a first area at a first frame rate and in a second area at a second frame rate, where the second frame rate can be higher than the first frame rate. This dynamic configuration allows the system to adapt frame rates based on content requirements, enabling frame rate boosting in specific areas while maintaining power efficiency in other areas, thus providing both power savings and frame rate flexibility.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12315425B2Display driver circuit
Publication Date: 2025.05.27 NOVATEK MICROELECTRONICS CORP
  • US12315425B2 patent drawing
  • US12315425B2 patent drawing
  • US12315425B2 patent drawing

AI summary

A display driver circuit including a gate signal control circuit is provided. The gate signal control circuit is configured to output a clock signal to drive a display panel to operate in a first mode or a second mode. The display panel includes a first area and a second area. In the second mode, a pulse width of the clock signal driving the first area of the display panel is smaller than a pulse width of the clock signal driving the second area of the display panel.