Rotating Infrared Sensor Module for Dual-Side Terminal Detection

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Solution Overview

Problem

The challenge is to reduce the thickness of terminal devices equipped with double-sided screens while maintaining infrared sensing functionality, as traditional methods require separate infrared sensors on both sides, occupying significant space and complicating stacking and thinning processes.

Innovation Solution

An infrared sensing module with a rotating reflecting portion, driven by a driving portion, allows the infrared light to be emitted and received through a single set of light-transmitting holes on opposite sides of the terminal device, enabling independent infrared detection on both sides without the need for multiple sensors, thus reducing space occupation and facilitating thinning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate infrared sensors are disposed on both sides of the terminal device to achieve independent infrared sensing, then infrared sensing functionality is improved, but device thickness increases and stacking space is compressed

Engineering Contradiction:

Improveinfrared sensing functionalityVSAvoiddevice thickness

Core Design Contradiction:

ReliabilityVSLength of stationary object

Solution Approach 1:

The patent merges the infrared sensing functions for both front and back sides into a single infrared sensing module. The rotating reflecting portion directs infrared light from either side to a shared infrared receiver, eliminating the need for separate sensors and reducing overall device thickness while maintaining independent sensing capability on both sides.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent employs a rotating reflecting portion that can dynamically change its orientation to direct infrared light from either the front or back side to the infrared receiver. This dynamic mechanism allows one component to serve multiple functions, reducing the number of static components needed and thereby reducing device thickness.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If separate infrared sensors are disposed on both sides of the terminal device, then independent infrared sensing on both sides is achieved, but component count and device complexity increase

Engineering Contradiction:

Improveindependent infrared sensing on both sidesVSAvoidcomponent count

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The single infrared sensing module is designed to perform multiple functions: it can detect infrared light from both the front and back sides of the device through the rotating reflecting portion. This multi-functional design eliminates the need for separate sensors, reducing component count while maintaining the ability to perform independent sensing on both sides.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent segments the light path using a rotating reflecting portion that can direct infrared light from different sides to a shared receiver. This segmentation of the optical path allows one component to handle multiple sensing directions, reducing the overall component count while maintaining independent sensing capability.

Inventive Principle:

Principle #1Segmentation

3Adaptability or versatility

If separate infrared sensors are disposed on both sides of the terminal device, then infrared sensing requirements for front and back sides are met, but space occupation increases

Engineering Contradiction:

Improveinfrared sensing coverageVSAvoidspace occupation

Core Design Contradiction:

Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The patent combines the infrared sensing functions for both front and back sides into a single module with a shared infrared receiver and rotating reflecting portion. This merging reduces the total space required compared to having separate sensors on each side, while still providing comprehensive infrared sensing coverage for both sides of the device.

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 solution enables efficient infrared detection on both sides of the terminal device using a single infrared sensing module, reducing component count, space occupation, and manufacturing costs, while enhancing the device's thinning and display performance.

Implementation Method 1

an infrared light emitter and an infrared light receiver, where the driving portion is connected to the reflecting portion, the driving portion drives the reflecting portion to rotate

Methodology Applied

Scientific EffectInfrared radiation: Infrared Radiation

Implementation Method 2

an infrared reflecting layer of the reflecting portion faces the infrared light emitter and the infrared light receiver when the reflecting portion rotates to a preset position

Methodology Applied

Scientific EffectReflection: Reflection

Data Source

PatentUS12013265B2Infrared sensing module, terminal device, control method of terminal device, and non-transitory computer-readable storage medium

Publication Date: 2024.06.18 VIVO MOBILE COMM CO LTD

AI summary

An infrared sensing module includes a reflecting portion, a driving portion, an infrared light emitter and an infrared light receiver. The driving portion is connected to the reflecting portion, and the driving portion drives the reflecting portion to rotate, and an infrared reflecting layer of the reflecting portion faces the infrared light emitter and the infrared light receiver when the reflecting portion rotates to a preset position.