Display Panel Sub-Pixel Grouping for Flicker Reduction

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Solution Overview

Problem

Display panels experience a flicker phenomenon, especially at low refresh rates, which affects the display effect and is difficult to alleviate without increasing production costs or complexity.

Innovation Solution

The display panel is designed with multiple rows of sub-pixel units divided into n sub-pixel unit groups, where two adjacent rows in each group are spaced by (n−1) rows in other groups. A scan drive module sequentially scans and drives each row in each group and the groups in divided periods within a scan cycle, achieving multiple interlaced scan drives and extending the scan drive time difference between adjacent rows.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If the refresh rate is reduced to lower power consumption, then energy efficiency is improved, but the flicker phenomenon intensifies and display quality deteriorates

Engineering Contradiction:

Improvepower consumptionVSAvoidflicker phenomenon

Core Design Contradiction:

Use of energy by moving objectVSObject-affected harmful factors

Solution Approach 1:

The patent segments the sub-pixel units into multiple groups (first group, second group, third group, etc.) and applies different scanning patterns to each group. Specifically, odd-numbered groups use one scanning pattern while even-numbered groups use another pattern, creating staggered refresh cycles that combine to reduce visible flicker at lower refresh rates

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements periodic scanning with different periods for different sub-pixel groups. The first scan cycle refreshes certain groups, the second scan cycle refreshes other groups, creating a periodic pattern that maintains perceived brightness stability. This allows the display to operate at lower refresh rates while maintaining flicker-free appearance through the periodic interleaving of different group refreshes

Inventive Principle:

Principle #19Periodic action

2Ease of manufacture

If traditional pixel circuit structures are used to maintain low production cost, then manufacturing simplicity is preserved, but the flicker phenomenon cannot be effectively alleviated

Engineering Contradiction:

Improveproduction costVSAvoidflicker phenomenon

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent introduces dynamic scanning control where the scanning pattern changes based on the group number. Different sub-pixel groups are scanned in different sequences and at different times within the refresh cycle. This dynamic scanning approach allows flicker reduction without modifying the static pixel circuit structure, maintaining manufacturing simplicity while achieving the desired display quality improvement

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS12272282B2Display panel and driving method therefor, and display device

Publication Date: 2025.04.08 KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD

AI summary

A display panel, a driving method therefor, and a display device. The display panel includes a scan drive module and multiple rows of sub-pixel units arranged in sequence. The multiple rows of sub-pixel units are divided into n sub-pixel unit groups, and two adjacent rows of the sub-pixel units in each sub-pixel unit group are spaced by (n−1) rows of the sub-pixel units in other sub-pixel unit groups. The scan drive module is configured to sequentially scan and drive each row of the sub-pixel units in each sub-pixel unit group and scan and drive the n sub-pixel unit groups in divided periods within a scan cycle.