Transparent Display Signal Line Arrangement for Diffraction Reduction

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Solution Overview

Problem

Existing transparent display panels suffer from a ghosting effect due to strong diffraction when environment light passes through, degrading image quality.

Innovation Solution

The arrangement of one signal line group at an interval of at least two subpixels in multiple subpixel rows, with each signal line group including at least two signal lines, increases the distance between adjacent signal line groups, thereby weakening the diffraction phenomenon and reducing the ghosting effect.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If signal line groups are arranged at regular intervals in existing transparent display panels, then the display structure is simple and easy to manufacture, but strong diffraction occurs when environment light passes through, resulting in obvious ghosting effect and lowering image quality

Engineering Contradiction:
Improvesignal line arrangement simplicityVSAvoiddiffraction effect and ghosting
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent applies asymmetry by arranging signal line groups at irregular intervals rather than regular intervals. Specifically, the distance between adjacent signal line groups varies, with some distances being at least twice the subpixel pitch and others being different values. This asymmetric arrangement breaks the periodicity of the grating structure, thereby reducing diffraction effects and ghosting while maintaining manufacturing feasibility

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The patent implements local quality by making different regions of the display panel have different signal line group spacing. Certain areas have larger spacing (at least twice the subpixel pitch) while other areas have different spacing, creating locally optimized structures that reduce diffraction in critical areas while maintaining overall display performance and manufacturing ease

Inventive Principle:
Principle #3Local quality

2Object-affected harmful factors

If signal line groups are arranged with larger intervals to reduce diffraction, then ghosting effect is reduced and image quality improves, but the display structure becomes more complex and manufacturing difficulty increases

Engineering Contradiction:
Improveghosting effectVSAvoidsignal line arrangement complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent applies segmentation by dividing the signal line groups into different types based on their spacing characteristics. First signal line groups have spacing of at least twice the subpixel pitch, while second signal line groups have different spacing. This segmentation allows different regions to be optimized for different purposes, reducing overall diffraction while maintaining manageable structural complexity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent changes the spacing parameter of signal line groups from uniform values to variable values. By setting different spacing distances for different signal line groups (with at least one distance being at least twice the subpixel pitch), the patent optimizes the diffraction characteristics without creating excessive complexity, as the changes are systematic rather than arbitrary

Inventive Principle:
Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This configuration enhances image quality by reducing the diffraction effect caused by environment light, resulting in a clearer display.

Implementation Method 1

Strong diffraction will occur when environment light passes through the transparent display panel, resulting in an obvious ghosting effect

Methodology Applied
Scientific EffectDiffraction: Diffraction

Data Source

PatentUS11482574B2Transparent display panel and transparent display apparatus
Publication Date: 2022.10.25 SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
  • US11482574B2 patent drawing
  • US11482574B2 patent drawing
  • US11482574B2 patent drawing

AI summary

The present invention provides a transparent display panel and a transparent display apparatus, which includes a plurality of subpixel rows arranged in parallel along a first direction, the subpixel row including a plurality of subpixels arranged in parallel along a second direction; a gate line, provided at an interval of one subpixel row; and a plurality of signal line groups, passing through the plurality of subpixel rows, one signal line group provided at an interval of at least two subpixels in the plurality of subpixel rows, the signal line group at least including two signal lines.