Under-Display Module Hole Cover Pattern for Light Transmission

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Solution Overview

Problem

Existing electronic devices face challenges in maintaining improved visibility and reliability, particularly when incorporating modules like cameras, while minimizing the increase in peripheral areas and maintaining aesthetic appeal.

Innovation Solution

The electronic device incorporates a display module with a higher light transmittance transmission area, a lower film, a protective member with module holes, and cover patterns surrounding these holes, which can be rings, to enhance visibility and protect internal components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a transmission area with higher light transmittance is provided, then visibility is improved, but the peripheral area increases

Engineering Contradiction:
Improvelight transmittanceVSAvoidperipheral area
Core Design Contradiction:
Illumination intensityVSArea of stationary object

Solution Approach 1:

The patent introduces a cover pattern layer disposed between the lower film and the protective member, creating an additional dimensional layer that selectively blocks light. This cover pattern layer allows the transmission area to maintain high light transmittance for visibility while the cover pattern itself defines the peripheral boundary, effectively managing the peripheral area through a new spatial dimension in the stack structure.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The cover pattern acts as an intermediary element between the transmission area and the peripheral region. It is disposed specifically between the lower film and the protective member, serving as a mediator that allows light to pass through the transmission area while blocking light from reaching the peripheral area, thus resolving the contradiction between visibility and peripheral area management.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Illumination intensity

If the lower film is made transparent for visibility, then light transmission is improved, but interference from the lower film increases

Engineering Contradiction:
Improvelight transmissionVSAvoidinterference from lower film
Core Design Contradiction:
Illumination intensityVSObject-generated harmful factors

Solution Approach 1:

The cover pattern serves as an intermediary layer positioned between the lower film and the protective member. It mediates the interaction between light and the lower film by blocking light paths that would cause interference while allowing beneficial light transmission through the transmission area, thus reducing harmful interference effects.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The cover pattern extracts and blocks specific light paths that cause interference from the lower film. By selectively blocking these interfering light paths through the cover pattern's geometric design, the patent removes the harmful interference effect while preserving the overall light transmission function.

Inventive Principle:
Principle #2Taking out (Extraction)

3Adaptability or versatility

If electronic modules are added to enhance functionality, then device capability is improved, but reliability decreases due to increased complexity

Engineering Contradiction:
Improvedevice capabilityVSAvoidreliability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The electronic module is nested within the protective member, which itself is part of the layered structure containing the cover pattern and lower film. This nested arrangement protects the electronic module from external damage while keeping it integrated within the existing structure, thus improving device capability without significantly compromising reliability.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The cover pattern and protective member act as intermediary protective layers between the external environment and the electronic module. These intermediaries protect the electronic module from damage, thereby maintaining reliability even as device capability is enhanced through the addition of electronic modules.

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 configuration improves visibility and reliability by reducing interference from the lower film and allowing for better light transmission, while also preventing increases in peripheral areas, thus enhancing the device's aesthetic appeal.

Implementation Method 1

a transmission area having a higher light transmittance than the display area

Methodology Applied
Scientific EffectLight transmission: Light

Data Source

PatentEP3929699B1Electronic device
Publication Date: 2026.03.04 SAMSUNG DISPLAY CO LTD
  • EP3929699B1 patent drawingFigure 1A
  • EP3929699B1 patent drawingFigure 1B
  • EP3929699B1 patent drawingFigure 1C

AI summary

An electronic device includes a display module including a display area and a transmission area having a higher light transmittance than the display area, a lower film disposed under the display module, a protective member disposed under the lower film, the protective member including a module hole overlapping penetrating the protective member, at least one cover pattern disposed between the lower film and the protective member, and an electronic module overlapping the module hole, wherein the at least one cover pattern has a closed line shape surrounding the module hole.