Double-Sided Display With Single Panel And Dual Reflective Layers

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Solution Overview

Problem

Current double-sided displays are complex and costly due to the need for two independent display panels and backlights, resulting in increased thickness and weight, which contradicts the trend of making displays lighter and thinner.

Innovation Solution

A double-sided display design featuring a single display panel with alternating transmissive and reflecting regions on both sides, utilizing light conversion layers to convert ambient light into polarized light and filter out unwanted polarizations, allowing for independent control of light emission on each side without the need for a backlight.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If two independent display panels and backlights are used to create a double-sided display, then image display capability on both sides is achieved, but device complexity, thickness, and weight increase

Engineering Contradiction:

Improvedouble-sided display capabilityVSAvoidinternal structure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges two independent display systems into a single integrated structure by using one display panel with dual reflective layers on opposite sides. Each reflective layer serves one side of the display, eliminating the need for separate panels and backlights, thus reducing structural complexity while maintaining double-sided display functionality

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The single display panel performs multiple functions: it serves as the light-modulating element for both sides of the display simultaneously. The reflective layers are designed to work together with the same panel to provide independent image display on both sides, making the panel a multi-functional component

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If two independent display panels and backlights are used to create a double-sided display, then image display capability on both sides is achieved, but thickness increases

Engineering Contradiction:

Improvedouble-sided display capabilityVSAvoiddisplay thickness

Core Design Contradiction:

Adaptability or versatilityVSLength of stationary object

Solution Approach 1:

By combining two display systems into one integrated structure with shared components, the overall thickness is reduced. The single panel with dual reflective layers replaces what would otherwise require two separate panel assemblies, directly reducing the thickness dimension

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If two independent display panels and backlights are used to create a double-sided display, then image display capability on both sides is achieved, but weight increases

Engineering Contradiction:

Improvedouble-sided display capabilityVSAvoiddisplay weight

Core Design Contradiction:

Adaptability or versatilityVSWeight of stationary object

Solution Approach 1:

Merging two independent display systems into one integrated structure eliminates redundant components such as duplicate backlights, driving circuits, and support structures. This consolidation directly reduces the overall weight while preserving the double-sided display functionality

Inventive Principle:

Principle #5Merging (Combining)

4Adaptability or versatility

If reflective regions and transmissive regions are arranged alternately on both sides of the display panel, then independent image control on each side is achieved, but manufacturing precision requirements increase

Engineering Contradiction:

Improveindependent image control capabilityVSAvoidregion alignment precision

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The reflective layers are segmented into distinct reflective regions and transmissive regions that correspond to different pixel regions. This segmentation allows independent control of light reflection and transmission for different areas of the display, enabling independent image display on both sides while using a single panel

Inventive Principle:

Principle #1Segmentation

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 design reduces the thickness and weight of the display while maintaining effective image display on both sides, ensuring a normal display effect without adverse influence from 'dark regions', and allows for independent image control on each side.

Implementation Method 1

The light conversion layers are configured to convert an incident ambient light to a linearly polarized light, and convert the linearly polarized light to a right-circularly polarized light and filter out a left-circularly polarized light

Methodology Applied

Scientific EffectPolarization: Polarisation

Implementation Method 2

filter out a left-circularly polarized light

Methodology Applied

Scientific EffectOptical filtering: Filter (optical)

Implementation Method 3

the first reflective layer includes transmissive regions and reflecting regions, the second reflective layer includes transmissive regions and reflecting regions

Methodology Applied

Scientific EffectLight reflection: Reflection

Data Source

PatentUS10067378B2Double-sided display

Publication Date: 2018.09.04 BOE TECHNOLOGY GROUP CO LTD

AI summary

A double-sided display is provided. The double-sided display comprises: a display panel, and a first reflective layer and a second reflective layer respectively arranged on both sides of the display panel, and light conversion layers arranged on an outer side of the first reflective layer and an outer side of the second reflective layer.