Notched Pixel Layout for Wide-Angle Display Color Consistency

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Solution Overview

Problem

Display panels with large viewing angles suffer from color shift issues due to differential light blocking by metal meshes, causing yellowish or bluish/cyanish hues at different viewing angles.

Innovation Solution

The display panel design includes pixels with varying sizes and notches to align the observable angles of light emission, ensuring uniform color perception across viewing angles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If pixels of different colors have different sizes, then the light emission observable angles can be aligned, but the device complexity increases due to varying pixel dimensions and notch configurations

Engineering Contradiction:
Improvecolor consistencyVSAvoidpixel structure
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent applies local quality by giving different pixel sizes to different color sub-pixels (e.g., larger red pixels, smaller blue pixels) and adding pixel notches specifically to certain pixels. This local differentiation in pixel characteristics allows each color to have its light emission observable angle adjusted independently, thereby aligning the observable angles across different colors and resolving the color shift issue at large viewing angles.

Inventive Principle:
Principle #3Local quality

2Stability of the object's composition

If pixel notches are added to adjust light emission angles, then color shift is reduced, but the manufacturing precision requirements increase

Engineering Contradiction:
Improvecolor consistencyVSAvoidpixel notch alignment
Core Design Contradiction:
Stability of the object's compositionVSManufacturing precision

Solution Approach 1:

The patent employs preliminary action by pre-designing and pre-positioning pixel notches in specific locations on pixels during the manufacturing process. The notches are strategically placed before final assembly to ensure that the light emission observable angles are correctly aligned from the outset. This advance preparation simplifies the overall manufacturing process by establishing precise angular relationships early in production.

Inventive Principle:
Principle #10Preliminary action

3Illumination intensity

If the maximum size of certain pixels is increased, then the light emission intensity is improved, but the observable angle deviation from frontal view increases

Engineering Contradiction:
Improvelight emission intensityVSAvoidobservable angle consistency
Core Design Contradiction:
Illumination intensityVSStability of the object's composition

Solution Approach 1:

The patent uses pixel notches as intermediary structures that mediate between the large pixel size (which provides high light emission intensity) and the observable angle consistency requirement. The notches act as optical modifiers that reshape the light emission pattern, allowing larger pixels to maintain their intensity advantage while the notches control the angular distribution to prevent excessive deviation from the frontal view angle.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS12490618B2Display panel
Publication Date: 2025.12.02 WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO LTD
  • US12490618B2 patent drawing
  • US12490618B2 patent drawing
  • US12490618B2 patent drawing

AI summary

The present application provides a display panel including a plurality of pixel units, one of the pixel units includes: a first pixel; and a second pixel spaced from the first pixel. A maximum size of the second pixel in a first direction is greater than a maximum size of the first pixel in the first direction. The second pixel is provided with at least one pixel notch disconnecting a part of the second pixel to form at least two light emitting portions at least partially spaced apart in the first direction.