Display Device Camera Accommodation Space and Low Reflective Film

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Solution Overview

Problem

Display devices with embedded cameras suffer from increased thickness and glittering effects due to camera placement and reflective components, which hinder slim design and optical performance.

Innovation Solution

A display device design that incorporates a camera into an accommodation space within the lower substrate, combined with a tape-type low reflective film featuring a transparent adhesive layer and low reflective layer, minimizes thickness and glittering by reducing light reflection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the camera is disposed under the lower substrate, then the camera is not obstructed and can capture images, but the overall thickness of the display device increases

Engineering Contradiction:
Improvecamera functionVSAvoidthickness
Core Design Contradiction:
ReliabilityVSLength of stationary object

Solution Approach 1:

The camera is nested within the lower substrate by forming an accommodation space (recess) in the lower substrate. This allows the camera to be positioned within the substrate thickness rather than adding to it, enabling the camera function while maintaining a thin overall device profile.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Reliability

If the camera and its components are disposed in the transparent area, then light can reach the camera, but light reflects off these components causing glittering effects

Engineering Contradiction:
Improvecamera functionVSAvoidglittering
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent converts the harmful reflective surfaces of camera components into beneficial low-reflective surfaces by applying a low reflective film. This film reduces unwanted light reflections that cause glittering while maintaining the camera's light reception capability, effectively transforming a harmful optical effect into a controlled and minimized phenomenon.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The low reflective film is applied locally to specific surfaces of the camera components that are positioned in the transparent area. This selective application reduces reflection only where necessary (on camera components) while maintaining optical transparency in the overall transparent area, addressing glittering without compromising camera function.

Inventive Principle:
Principle #3Local quality

3Object-generated harmful factors

If a low reflective material is coated onto the camera or bottom surface, then glittering is minimized, but it is difficult to coat the material onto the narrow portion

Engineering Contradiction:
ImproveglitteringVSAvoidcoating process
Core Design Contradiction:
Object-generated harmful factorsVSEase of manufacture

Solution Approach 1:

The patent introduces a low reflective film as an intermediary component that can be easily attached to the camera or substrate. This film serves as a mediator between the coating process and the narrow camera surface, providing the low reflective property without requiring direct coating onto the difficult-to-reach narrow portions. The film can be attached using various methods including adhesive layers.

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

The solution effectively reduces the display device's thickness and minimizes glittering effects, enabling a slimmer design and maintaining optical properties, particularly in the transparent area, by using an optically clear adhesive for better adhesion and reduced haze.

Implementation Method 1

a low reflective film in the accommodation space to minimize glittering effects caused by light reflections caused by the camera

Methodology Applied
Scientific EffectOptical interference: Interference

Implementation Method 2

a tape-type low reflective film featuring a transparent adhesive layer and low reflective layer

Methodology Applied
Scientific EffectLight transmission: Light

Data Source

PatentUS10338644B2Display device
Publication Date: 2019.07.02 LG DISPLAY CO LTD
  • US10338644B2 patent drawing
  • US10338644B2 patent drawing
  • US10338644B2 patent drawing

AI summary

A display device having a minimal overall thickness is achieved by receiving a camera in an accommodation space on at least one among upper and lower substrates. The optical affects caused by reflection of light off the camera or its components can be minimized by a special low reflective film provided in the accommodation space.