Pixel Array with Varying Sub-Pixel Sizes for Aperture Ratio

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Solution Overview

Problem

Display panels face a challenge in achieving both high resolution and high aperture ratio, as reducing the number of sub-pixels to increase brightness limits pixel resolution.

Innovation Solution

A pixel array design that includes repeating units with varying sizes of color sub-pixels, where one sub-pixel is larger than the others, allowing for increased aperture ratio while maintaining resolution by keeping the size of other sub-pixels consistent.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If the number of sub-pixels is reduced to increase the aperture ratio, then the brightness is improved, but the resolution becomes limited

Engineering Contradiction:
ImprovebrightnessVSAvoidresolution
Core Design Contradiction:
Illumination intensityVSManufacturing precision

Solution Approach 1:

The pixel array is divided into repeating units, each containing multiple color sub-pixels (three first color sub-pixels, four second color sub-pixels, and three third color sub-pixels). This segmentation allows the aperture ratio to be increased by optimizing the arrangement within each unit while preserving resolution through the structured distribution of sub-pixels across the array.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Within each repeating unit, the sizes of color sub-pixels are differentiated (one sub-pixel of each color type is larger than the others). This local variation in sub-pixel quality enables enhanced brightness in specific regions while maintaining overall resolution through the consistent repeating pattern across the display panel.

Inventive Principle:
Principle #3Local quality

2Use of energy by moving object

If the aperture ratio is increased to improve brightness, then the use of energy is improved, but the resolution is degraded

Engineering Contradiction:
Improvepower-savingVSAvoidresolution
Core Design Contradiction:
Use of energy by moving objectVSManufacturing precision

Solution Approach 1:

The display panel is segmented into multiple repeating units with optimized sub-pixel arrangements. This segmentation enables the aperture ratio to be increased across the entire panel, improving power efficiency, while the structured repetition of units preserves resolution by ensuring adequate sub-pixel distribution.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The parameters of sub-pixel sizes and arrangements are changed within repeating units to optimize the aperture ratio. By adjusting the relative sizes of color sub-pixels and their spatial distribution, the design achieves better brightness and power efficiency while maintaining resolution through the systematic parameter variation across the array.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS10600350B2Pixel array
Publication Date: 2020.03.24 AU OPTRONICS CORP
  • US10600350B2 patent drawing
  • US10600350B2 patent drawing
  • US10600350B2 patent drawing

AI summary

A pixel array includes a plurality of repeating units. Each repeating unit includes three first color sub-pixels, three second color sub-pixels, three third color sub-pixels, and three fourth color sub-pixels. The size of one of the first color sub-pixels is greater than the size of each of the other two first color sub-pixels. The size of one of the second color sub-pixels is greater than the size of each of the other two first color sub-pixels. The size of one of the third color sub-pixels is greater than the size of each of the other two third color sub-pixels. The size of one of the fourth color sub-pixels is greater than the size of each of the other two fourth color sub-pixels.