Screen Assembly Light Shielding Member Camera Field of View

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Solution Overview

Problem

The challenge in increasing the screen-to-body ratio of electronic devices is that smaller camera module holes obstruct the camera's field of view, affecting shooting quality, while larger holes compromise the aesthetics and structural integrity.

Innovation Solution

Incorporating a light shielding member and ink layer between the backlight module and display panel, with strategically designed through holes, to block light leakage and shield internal structures, thereby increasing the camera's field of view and screen-to-body ratio without compromising aesthetics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the hole diameter is decreased to increase screen-to-body ratio, then the screen-to-body ratio is improved, but the field of view of the camera module is blocked and shooting quality deteriorates

Engineering Contradiction:
Improvescreen-to-body ratioVSAvoidfield of view blockage
Core Design Contradiction:
Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a light guide plate that redirects light from the backlight module through the camera module hole to illuminate the camera sensor. This transforms the harmful light leakage into a useful function, allowing the hole to serve dual purposes: maintaining screen-to-body ratio while enabling camera operation through optical path redirection in a different dimensional approach

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

Solution Approach 2:

The light guide plate acts as an intermediary component between the backlight module and the camera module. It mediates the light path by capturing light from the backlight and redirecting it through the camera hole, thus resolving the conflict between needing a small hole for screen ratio and needing light access for camera function

Inventive Principle:
Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If the hole diameter is increased to improve camera field of view, then the shooting quality is improved, but the screen-to-body ratio deteriorates

Engineering Contradiction:
Improvefield of viewVSAvoidscreen-to-body ratio
Core Design Contradiction:
Object-affected harmful factorsVSArea of stationary object

Solution Approach 1:

The patent changes the optical parameters of the system by introducing a light guide plate with specific optical properties. This allows the hole diameter to remain small while effectively increasing the light-gathering capability through optical redirection, thus improving field of view without sacrificing screen-to-body ratio

Inventive Principle:
Principle #35Parameter changes

3Ease of manufacture

If light shielding members and ink layers are added to block light leakage, then the appearance quality is improved, but the device complexity increases

Engineering Contradiction:
Improveappearance qualityVSAvoidstructure complexity
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent merges the light shielding function with the existing backlight module structure by integrating the light guide plate into the backlight assembly. This combines multiple functions (light guidance, shielding, and structural support) into a single integrated component, improving appearance quality while minimizing the increase in overall device complexity

Inventive Principle:
Principle #5Merging (Combining)

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 enhances the camera's field of view and shooting performance while maintaining a high screen-to-body ratio and improving the device's appearance by reducing visible internal structures and light leakage.

Implementation Method 1

a light shielding member 400 sandwiched between the backlight module 100 and the display panel 200... The shielding member 400 is configured to block light leakage of the display panel 200 and the backlight module 100 toward the camera module 300

Methodology Applied
Scientific EffectLight blocking: Absorption (EM radiation)

Implementation Method 2

Ink layers are commonly used in display modules to absorb light and prevent light leakage

Methodology Applied
Scientific EffectLight absorption: Absorption (EM radiation)

Data Source

PatentEP3780565B1Screen assembly and electronic device
Publication Date: 2023.07.12 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD
  • EP3780565B1 patent drawingFigure 1(a)
  • EP3780565B1 patent drawingFigure 1(b)
  • EP3780565B1 patent drawingFigure 1(c)

AI summary

A screen assembly and an electronic device are provided according to the disclosure. The screen assembly includes a backlight module, a display panel, and a camera module. The backlight module is stacked with the display panel and defines a mounting through hole for receiving the camera module. A light shielding member is sandwiched between the backlight module and the display panel and defines a first through hole through which the camera module extends. The light shielding member is configured to block light leakage of the display panel and the backlight module toward the camera module. A technical solution of the disclosure is beneficial to increase field of view of the camera module and a screen-to-body ratio of the electronic device.