Display Panel Region-Specific Pixel Circuit Control

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Solution Overview

Problem

Display panels face challenges in efficiently managing different display functions across various regions, requiring differentiated pixel circuit designs to optimize power consumption and user experience, but existing solutions struggle to effectively adjust drive currents and refresh rates for diverse display requirements.

Innovation Solution

A display panel with separate pixel circuits for different regions, each receiving distinct control signals and bias adjustment signals, allowing for varying pulse frequencies and initialization signals to manage drive currents and refresh rates according to specific functional needs, thereby enabling region-specific display functions while minimizing power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If differentiated pixel circuit designs are implemented for different display regions, then display performance and power consumption are optimized, but device complexity increases

Engineering Contradiction:
Improvedisplay performanceVSAvoidpixel circuit complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements differentiated pixel circuits for different display regions (first display region and second display region) with distinct functional requirements. Each region receives customized control signals and bias adjustment signals tailored to its specific display needs, such as different refresh rates for gaming versus text display areas, thereby optimizing local display performance without requiring complete redesign of the entire display system.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The display panel is divided into multiple independent display regions, each with its own pixel circuit that can be independently controlled. This segmentation allows different regions to operate at different refresh rates and receive different control signals, enabling optimized power consumption and display performance for each region while maintaining overall system manageability through modular architecture.

Inventive Principle:
Principle #1Segmentation

2Use of energy by moving object

If separate control signals with different pulse frequencies are applied to different pixel circuits, then power consumption is reduced through targeted signal management, but control system complexity increases

Engineering Contradiction:
Improvepower consumptionVSAvoidcontrol system complexity
Core Design Contradiction:
Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The patent applies periodic control signals with different pulse frequencies to different pixel circuits based on the refresh rate requirements of each display region. For example, regions displaying dynamic content like games receive higher frequency signals, while regions displaying static content like text receive lower frequency signals, thereby reducing overall power consumption while maintaining necessary display quality in each region.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The control system dynamically adjusts the pulse frequencies of control signals sent to different pixel circuits based on real-time display requirements. This dynamic signal management allows the system to optimize power consumption by matching signal frequency to actual display needs in each region, rather than using a uniform high-frequency signal across the entire display panel.

Inventive Principle:
Principle #15Dynamics

3Power

If region-specific bias adjustment signals are provided to pixel circuits, then drive current optimization is achieved, but signal management complexity increases

Engineering Contradiction:
Improvedrive currentVSAvoidsignal management complexity
Core Design Contradiction:
PowerVSDevice complexity

Solution Approach 1:

The patent provides region-specific bias adjustment signals to different pixel circuits, allowing each region's drive current to be optimized according to its specific display requirements. By adjusting parameters such as bias voltage and pulse frequency independently for each display region, the system achieves precise control over drive current, enabling better power efficiency and display performance without requiring complete redesign of the power management architecture.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12260812B2Display panel, integrated chip, and display device
Publication Date: 2025.03.25 XIAMEN TIANMA DISPLAY TECH CO LTD
  • US12260812B2 patent drawing
  • US12260812B2 patent drawing
  • US12260812B2 patent drawing

AI summary

Provided are a display panel, an integrated chip, and a display device. The display panel includes a first display region, a second display region, and a pixel circuit. The pixel circuit includes a first pixel circuit and a second pixel circuit, where the first pixel circuit is connected to a light-emitting element in the first display region, and the second pixel circuit is connected to a light-emitting element in the second display region. The pixel circuit includes a drive transistor and a first presetting module, and a terminal of the first presetting module is connected to the drive transistor, where a control terminal of a first presetting module in the first pixel circuit is configured to receive a first control signal, and a control terminal of a first presetting module in the second pixel circuit is configured to receive a second control signal.