Multilayer Opto-Electronic Module Light-Blocking Structure

Solution Overview

Problem

Multilayer opto-electronic modules face issues with residual images and light leakage when displaying different patterns, as light from one layer can affect the visual quality of another layer, leading to poor visual effects.

Innovation Solution

Incorporating a light-blocking structure between the light-emitting assemblies and their respective light guide sheets to prevent light from one layer from illuminating other layers, using internal and external spacers to block unwanted light and improve light utilization through total internal reflection and light-absorbing films.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple light-emitting assemblies are stacked in a multilayer opto-electronic module to provide multi-functional operation interface, then the functionality and display capabilities are improved, but residual images from other layers affect the visual quality, worsening the display clarity

Engineering Contradiction:

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

A light-blocking structure is introduced as an intermediary element between the first and second light-emitting assemblies. This structure includes a light-blocking sheet with a light-blocking layer that selectively blocks light from reaching specific layers, preventing residual image formation while maintaining the multi-functional display capabilities of the multilayer module

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The light-blocking structure is segmented into different regions: a first light-blocking region that blocks light from the first light-emitting assembly when the second layer is active, and a second light-blocking region that blocks light from the second light-emitting assembly when the first layer is active. This segmentation allows each layer to function independently without interference

Inventive Principle:

Principle #1Segmentation

2Manufacturing precision

If light-blocking structures are added between light-emitting assemblies to prevent residual images, then display clarity is improved, but the device complexity increases

Engineering Contradiction:

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The light-blocking structure serves multiple functions: it blocks light from reaching inactive layers to prevent residual images, maintains the structural integrity of the multilayer assembly, and works in conjunction with the light guide sheets to ensure proper light distribution. This multi-functionality reduces the need for additional separate components

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The light-blocking structure utilizes thin film structures, including a light-blocking sheet with a light-blocking layer, rather than bulky opaque components. This thin-film approach maintains the compactness of the multilayer module while effectively preventing light leakage and residual image formation

Inventive Principle:

Principle #30Flexible shells and thin films

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 effectively eliminates residual images and light leakage, ensuring clear and distinct visual patterns are displayed without interference, enhancing the overall visual effect of the multilayer opto-electronic module.

Implementation Method 1

the first light guide sheet has a first micro structure... When driven, the first light-emitting element assembly is configured to emit a first light towards the first light guide sheet

Methodology Applied

Scientific EffectTotal internal reflection: Total Internal Reflection

Data Source

PatentUS11163106B2Multilayer opto-electronic module

Publication Date: 2021.11.02

AI summary

A multilayer opto-electronic module includes a circuit board, a first light-emitting assembly, a second light-emitting assembly and a contact sheet. The first light-emitting assembly includes a first light guide sheet, a first light-shielding structure, and a first light-emitting element assembly. The second light-emitting assembly includes a second light guide sheet, a second light-shielding structure, and a second light-emitting element assembly. The second light-shielding structure has a second opening. The second opening corresponds to a first micro structure and a second micro structure. The contact sheet is above the second light-shielding structure. The contact sheet has a top transparent area. The top transparent area corresponds to the second opening.