Display Touch Sensor Terminal Sharing Switch

Solution Overview

Problem

In display devices with built-in touch sensors, the peripheral area often lacks sufficient space for additional connection terminals, making it difficult to integrate a touch sensor without increasing the number of connection terminals.

Innovation Solution

A display device design that includes a plurality of display elements, image signal lines, first and second electrodes arranged with specific connecting lines and switches, allowing for the sharing of connection terminals between image and touch signal lines, enabling efficient switching between display and touch operations without the need for additional terminals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a touch sensor is added to a display device, then touch detection function is improved, but the number of connection terminals increases

Engineering Contradiction:

Improvetouch detection functionVSAvoidnumber of connection terminals

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent applies multi-functionality by enabling connection terminals to serve dual purposes: connecting image signal lines during display operation and connecting touch signal lines during touch detection operation. Switching elements facilitate this functional transition, allowing the same physical terminals to handle different signal types based on operational mode, thereby avoiding the need for separate dedicated terminals for touch sensor integration.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent implements dynamics through switching elements that dynamically reconfigure the electrical connections between terminals and signal lines based on the operational state (display mode vs. touch detection mode). This dynamic switching capability allows the system to adapt the terminal assignments in real-time, enabling touch sensor functionality without requiring additional permanent terminal connections.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If connection terminals are increased in the peripheral area, then touch sensor integration is improved, but the available space is reduced

Engineering Contradiction:

Improvetouch sensor integrationVSAvoidavailable peripheral space

Core Design Contradiction:

Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The patent applies multi-functionality by enabling connection terminals to serve dual purposes: connecting image signal lines during display operation and connecting touch signal lines during touch detection operation. Switching elements facilitate this functional transition, allowing the same physical terminals to handle different signal types based on operational mode, thereby avoiding the need for separate dedicated terminals for touch sensor integration.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the connection infrastructure for display and touch functions by using shared connection terminals and switching elements. Instead of creating separate independent connection paths for image signals and touch signals, the system combines them into a unified terminal structure where resources are consolidated and dynamically allocated based on operational requirements.

Inventive Principle:

Principle #5Merging (Combining)

3Productivity

If switching elements are added to share terminals, then terminal usage efficiency is improved, but device complexity increases

Engineering Contradiction:

Improveterminal usage efficiencyVSAvoidswitching element configuration

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent applies multi-functionality by enabling connection terminals to serve dual purposes: connecting image signal lines during display operation and connecting touch signal lines during touch detection operation. Switching elements facilitate this functional transition, allowing the same physical terminals to handle different signal types based on operational mode, thereby avoiding the need for separate dedicated terminals for touch sensor integration.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS10359897B2Display device with touch sensor

Publication Date: 2019.07.23 MAGNOLIA WHITE CORP

AI summary

A display device according to an embodiment of the present invention includes: a plurality of first electrodes arranged on a plurality of display elements, a plurality of second electrodes arranged in a layer identical to or different from a layer of the first electrodes, and a plurality of first touch signal lines connected to the plurality of first electrodes; a plurality of connection terminal provided in the peripheral area; a first switch which switches a status of an electric connection between one of the plurality of image signal lines and one of the plurality of connection terminals from connected to disconnected, or vice versa; and a second switch which switches a status of an electric connection between one of the plurality of first touch signal lines and the one of the plurality of connection terminals from connected to disconnected, or vice versa.