Curved Pixel Apertures Reduce Diffraction in Transparent Displays

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Solution Overview

Problem

Conventional display terminals with transparent screens suffer from diffraction issues due to conductive traces, causing blurred images in photosensitive devices like cameras as external light passes through, resulting in distorted pictures.

Innovation Solution

A display panel with a substrate and a pixel definition layer featuring non-parallel, curved pixel apertures that diffract light in varying directions, reducing the intensity and uniformity of diffraction stripes, thereby minimizing the diffraction effect and ensuring proper operation of photosensitive devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional display terminals use transparent screens with conductive traces, then the screen can display images, but diffraction effects occur causing blurred images in photosensitive devices

Engineering Contradiction:

Improveimage qualityVSAvoiddiffraction effect

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies asymmetry by designing pixel apertures with non-parallel edges where each edge is a curve rather than a straight line. This asymmetric curved geometry causes light to diffract in varying directions, preventing the formation of uniform diffraction stripes that would otherwise blur images captured by photosensitive devices positioned behind the display.

Inventive Principle:

Principle #4Asymmetry

2Ease of manufacture

If pixel apertures have parallel edges, then manufacturing is simpler, but diffraction stripes become uniform and intense causing image distortion

Engineering Contradiction:

Improvepixel aperture fabricationVSAvoiddiffraction control precision

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent implements curvature by replacing straight parallel edges with curved non-parallel edges in the pixel aperture design. This curvature causes light to diffract at varying angles in different directions, effectively dispersing the diffraction effect and preventing the formation of intense uniform diffraction stripes, thereby improving image quality for photosensitive devices.

Inventive Principle:

Principle #14Spheroidality (Curvature)

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

The solution effectively reduces diffraction effects, allowing photosensitive devices under the display panel to capture images with higher resolution and accuracy by diffusing light in different directions, thus preventing distortion.

Implementation Method 1

Each edge of a projection of the first type of pixel aperture on the substrate is a curve, and the edges are not parallel to each other

Methodology Applied

Scientific EffectDiffraction: Diffraction

Data Source

PatentUS11244992B2Display panels, display screens, and display terminals

Publication Date: 2022.02.08 SUZHOU QUINGYUE OPTOELECTRONICS TECH CO LTD

AI summary

A display panel, a display screen, and a display terminal are provided. The display panel includes: a substrate; and a pixel definition layer formed on the substrate; pixel apertures formed on the pixel definition layer; the pixel aperture comprising a first type of pixel aperture; edges of a projection of the first type of pixel aperture on the substrate being curves, and the edges being not parallel to each other.