Transparent Display Panel Light-Guiding Component Brightness Uniformity

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Solution Overview

Problem

Existing transparent display devices suffer from non-uniform display brightness due to the reduction in overall brightness when attempting to make subpixels transparent for natural light penetration, leading to poor display performance.

Innovation Solution

Incorporating a light-guiding component on the light-emitting side of the transparent display panel to redirect and transmit light from light-emitting regions to transparent regions, utilizing a material with a higher refractive index and featuring light-redirecting elements such as protuberances or concaves to enhance light distribution and uniformity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a part of a subpixel or some subpixels are configured to form a transparent region for natural light penetration, then transparency is improved, but overall brightness decreases and display uniformity deteriorates

Engineering Contradiction:
ImprovetransparencyVSAvoidoverall brightness
Core Design Contradiction:
Ease of manufactureVSIllumination intensity

Solution Approach 1:

A light-guiding component is introduced as an intermediary element between the light-emitting region and transparent region. This component redirects light from the light-emitting region into the transparent region, mediating the trade-off between transparency and brightness by allowing natural light penetration while supplementing it with redirected emitted light to maintain display uniformity and overall brightness

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of manufacture

If a part of a subpixel or some subpixels are configured to form a transparent region, then transparency is improved, but display uniformity deteriorates

Engineering Contradiction:
ImprovetransparencyVSAvoiddisplay uniformity
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The light-guiding component acts as a mediator that redistributes light from the light-emitting region into the transparent region, thereby compensating for the brightness difference between these regions and achieving uniform display appearance across the entire display area

Inventive Principle:
Principle #24Intermediary (Mediator)

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 solution improves display uniformity and performance by directing light from light-emitting regions to transparent regions, maintaining brightness and transparency, thus addressing the issue of non-uniform brightness in existing transparent display devices.

Implementation Method 1

the at least one light-guiding component is configured to transmit a part of light emitted from the light-emitting regions to the transparent regions

Methodology Applied
Scientific EffectRefraction: Refraction

Implementation Method 2

the non-light-emitting surface of the second part of the light-guiding component is provided with a plurality of light-redirecting elements

Methodology Applied
Scientific EffectTotal internal reflection: Total Internal Reflection

Data Source

PatentUS9634289B2Transparent display panel and manufacturing method thereof, and transparent display device
Publication Date: 2017.04.25 BOE TECHNOLOGY GROUP CO LTD
  • US9634289B2 patent drawing
  • US9634289B2 patent drawing
  • US9634289B2 patent drawing

AI summary

Embodiments of this disclosure provide a transparent display panel and a manufacturing method thereof, and a display device. The transparent display panel comprises a plurality of light-emitting regions and a plurality of transparent regions. The transparent display panel further comprises at least one light-guiding component disposed on a light-emitting side of the transparent display panel, wherein the at least one light-guiding component is configured to transmit a part of light emitted from the light-emitting regions to the transparent regions. In the transparent display panel, a light-guiding component is used to transmit the light emitted by the light-emitting subpixels in the light-emitting regions to the transparent regions, and a plurality of light-redirecting members formed on a surface of the light-guiding component are used to change the direction of light transmitted to the transparent regions and to emit the light from the light-emitting side of the transparent regions. As a result, display uniformity of the whole transparent display panel is improved, and a better display performance can be achieved.