Segmented Display Panel Driving Circuit for Multi-Frequency Refresh

Solution Overview

Problem

Current display panels refresh all areas at the same frequency, which cannot meet the diverse display requirements of different areas, such as high-frequency refresh for smooth video display and low-frequency refresh for power savings.

Innovation Solution

A display panel with a driving circuit comprising cascaded shift register units, including a driving control module, stage transmission module, and scanning module, allows for different refresh frequencies in various areas by controlling the output of valid pulses from these modules.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If all display areas are refreshed at the same high frequency, then display smoothness is improved, but power consumption increases

Engineering Contradiction:

Improverefresh frequencyVSAvoidpower consumption

Core Design Contradiction:

SpeedVSUse of energy by moving object

Solution Approach 1:

The display panel is divided into multiple display areas (first display area and second display area) with different refresh frequency requirements. The driving circuit is segmented into corresponding first and second driving circuits, allowing independent control of refresh frequencies in different regions. This enables high refresh frequency in areas requiring smooth display while using low refresh frequency in areas with static or less frequent content, thereby reducing overall power consumption.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different refresh frequencies are applied to different display areas based on their specific requirements. The first display area uses a first refresh frequency while the second display area uses a second refresh frequency, optimizing display quality locally where needed and reducing power consumption in areas where high refresh is not necessary.

Inventive Principle:

Principle #3Local quality

2Use of energy by moving object

If all display areas are refreshed at the same low frequency, then power consumption is reduced, but display smoothness in video areas deteriorates

Engineering Contradiction:

Improvepower consumptionVSAvoidrefresh frequency

Core Design Contradiction:

Use of energy by moving objectVSSpeed

Solution Approach 1:

The display panel is divided into multiple display areas (first display area and second display area) with different refresh frequency requirements. The driving circuit is segmented into corresponding first and second driving circuits, allowing independent control of refresh frequencies in different regions. This enables high refresh frequency in areas requiring smooth display while using low refresh frequency in areas with static or less frequent content, thereby reducing overall power consumption.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different refresh frequencies are applied to different display areas based on their specific requirements. The first display area uses a first refresh frequency while the second display area uses a second refresh frequency, optimizing display quality locally where needed and reducing power consumption in areas where high refresh is not necessary.

Inventive Principle:

Principle #3Local quality

3Device complexity

If a single refresh frequency is used for all areas, then device complexity is reduced, but adaptability to different display requirements deteriorates

Engineering Contradiction:

Improvedriving circuit complexityVSAvoiddisplay frequency adaptability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The display panel is divided into multiple display areas (first display area and second display area) with different refresh frequency requirements. The driving circuit is segmented into corresponding first and second driving circuits, allowing independent control of refresh frequencies in different regions. This enables high refresh frequency in areas requiring smooth display while using low refresh frequency in areas with static or less frequent content, thereby reducing overall power consumption.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system dynamically adjusts refresh frequencies based on the display content and requirements of different areas. The multi-frequency driving mode allows the display panel to adaptively change refresh rates in different regions, providing flexibility to meet diverse display requirements while managing power consumption effectively.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS12322355B1Display panel, display panel driving method and display device

Publication Date: 2025.06.03 XIAMEN TIANMA MICRO ELECTRONICS

AI summary

The present application discloses a display panel, a display panel driving method and a display device, where the display panel includes: a driving circuit; the driving circuit includes a plurality of shift register units; the shift register unit includes a driving control module, a stage transmission module and a scanning module; the driving control module includes a starting input end, a scanning control end, a first node and a second node; the stage transmission module includes a first input end, a second input end, a first level end, a stage transmission clock end and a stage transmission output end; the first input end is electrically connected to the first node, and the second input end is electrically connected to the second node.