Proximity Motion Touch Sensor Electrode Segmentation

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Solution Overview

Problem

Current touch sensors in display devices cannot recognize user motions or gestures, making it inconvenient for users to interact with functions like flipping through web pages or adjusting volume without directly activating menu items.

Innovation Solution

A proximity/motion and touch sensor system that includes multiple electrode serials arranged in specific directions on a substrate, with insulation patterns to differentiate between proximity/motion and touch sensing, allowing for the detection of user proximity, motion, and touch actions, enabling gesture-based interactions without direct screen contact.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a traditional touch sensor is used, then users can directly contact the screen to input information, but users cannot easily perform gestures or motions without directly activating menu items

Engineering Contradiction:
Improvegesture-based interactionVSAvoidsensor configuration
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The sensor is divided into multiple electrode serials (first proximity/motion sensing electrode serials, second proximity/motion sensing electrode serials, first touch electrode serials, second touch electrode serials) arranged in different directions. This segmentation allows the sensor to distinguish between proximity/motion events and direct touch events by analyzing which electrode serials detect changes, enabling gesture-based interaction while maintaining manageable configuration through modular electrode design

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The proximity/motion and touch sensor integrates multiple functions into a single device: it can detect proximity actions, motion gestures, and direct touch inputs. The sensor serves multiple interaction modes (proximity-based control, motion-based control, and traditional touch) through a unified electrode structure with insulation patterns, reducing the need for separate sensors for different interaction types

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Measurement precision

If multiple electrode serials are arranged in specific directions, then proximity and motion detection accuracy is improved, but manufacturing complexity increases

Engineering Contradiction:
Improveproximity and motion detection accuracyVSAvoidelectrode arrangement complexity
Core Design Contradiction:
Measurement precisionVSEase of manufacture

Solution Approach 1:

The electrode structure is segmented into multiple serials arranged in different directions (first direction and second direction crossing over each other). This segmentation enables precise detection of proximity and motion by analyzing changes in specific electrode serials, while the modular nature of segmented electrodes simplifies manufacturing compared to a single complex electrode structure

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different regions of the sensor have different electrode configurations optimized for specific detection purposes. The first and second proximity/motion sensing electrode serials are arranged to detect proximity and motion in specific directions, while the touch electrode serials are arranged for touch detection. This local differentiation of electrode quality and arrangement enables high detection accuracy while maintaining manufacturability through standardized local patterns

Inventive Principle:
Principle #3Local quality

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

Enables users to easily select and control on-screen functions through proximity and motion actions, enhancing user interface convenience and reducing erroneous operations by allowing gesture recognition and touchless interaction with display devices.

Implementation Method 1

a proximity/motion driving electrode PT... a plurality of first proximity/motion sensing electrode serials PSx1, PSx2... a plurality of second proximity/motion sensing electrode serials PSy1, PSy2

Methodology Applied
Scientific EffectCapacitance: Capacitance

Implementation Method 2

a plurality of first touch electrode serials TS1 to TS4... a plurality of second touch electrode serials RS1 to RS5

Methodology Applied
Scientific EffectCapacitance: Capacitance

Data Source

PatentUS9141210B2Proximity/motion and touch sensor and display device having the same
Publication Date: 2015.09.22 LG DISPLAY CO LTD
  • US9141210B2 patent drawing
  • US9141210B2 patent drawing
  • US9141210B2 patent drawing

AI summary

This disclosure relates to a proximity/motion and touch sensor. The proximity/motion and touch sensor includes a proximity/motion driving electrode, a plurality of first proximity/motion sensing electrode, a plurality of second proximity/motion sensing electrode serials, a plurality of first touch electrode serials, and a plurality of second touch electrode serials.