Display Panel Sub-Pixel Polarity Arrangement for Graininess Reduction
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Solution Overview
Problem
The existing HG2D structure in large-size display panels, which improves charging efficiency by doubling it, results in a larger area of sub-pixels of the same polarity arranged together, leading to graininess in gray-scale images and affecting display performance.
Innovation Solution
The display panel is arranged with sub-pixels divided into units and sub-units, where sub-pixels within each unit have the same polarity, and adjacent units have different polarities, with a limited number of sub-pixels per unit to minimize the area of same polarity sub-pixels, and data lines with alternating polarities are used between columns to reduce graininess.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If HG2D structure is adopted to double charging efficiency, then charging efficiency is improved, but area of sub-pixels of same polarity increases causing graininess
Solution Approach 1:
The patent divides the display panel into multiple units, where each unit contains sub-pixels of different polarities arranged in a segmented pattern. This segmentation prevents large continuous areas of same-polarity sub-pixels, thereby eliminating graininess while preserving the HG2D charging efficiency improvement.
Solution Approach 2:
The patent applies different polarity arrangements to different local regions (units) of the display panel. Each unit has a specific polarity configuration that differs from adjacent units, creating local quality variations that prevent graininess while maintaining overall charging efficiency.
2Productivity
If sub-pixels of same polarity are arranged together in HG2D structure, then charging efficiency is improved, but display performance deteriorates due to graininess
Solution Approach 1:
The patent introduces asymmetric polarity arrangements within units, where the pattern of positive and negative polarity sub-pixels is not uniform across the entire panel but varies by unit. This asymmetry breaks up large same-polarity regions, preventing graininess while preserving the charging efficiency benefits of HG2D structure.
Solution Approach 2:
The patent adds a spatial dimension to the polarity arrangement by organizing sub-pixels into units with specific polarity patterns. This dimensional organization ensures that same-polarity sub-pixels are distributed across different spatial locations rather than clustered together, eliminating graininess while maintaining charging efficiency.
Data Source
AI summary
A display panel and a driving method thereof are provided. The display panel includes a plurality of sub-pixels arranged in an array. The plurality of sub-pixels are divided into a plurality of units arranged along rows and columns, and the unit includes a plurality of the sub-pixels. Polarities of the sub-pixels in any two adjacent sub-units are different, a number of the sub-pixels in any one of the sub-units is less than or equal to 4, and a number of the sub-pixels in one of the sub-units that has a common boundary with the unit is less than or equal to 2.