Touch-Sensitive Display Lock Screen Shape and Size Control

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Mobile terminals lack an effective method to control screen locking and switching based on touch input threshold values, limiting user interaction and interface flexibility.

Innovation Solution

A mobile terminal with a sensing unit to detect touch inputs, a display to show a threshold value, and a controller to change the lock screen shape and size according to touch input values, switching to a menu screen when the threshold is reached, incorporating real-touch and proximity touch capabilities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a touch threshold value system is implemented for screen locking and switching, then user interface flexibility and interaction quality are improved, but device complexity increases due to additional sensing and control mechanisms

Engineering Contradiction:

Improveuser interface flexibilityVSAvoiddevice complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The touch-sensitive display screen serves multiple functions: it acts as both the display interface and the input sensing mechanism. The same display structure detects touch inputs, proximity touches, and pressure variations without requiring separate sensing hardware, thereby reducing overall device complexity while maintaining interface flexibility.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system uses the display screen's own characteristics (capacitive properties) to detect touch inputs. The display structure itself participates in the sensing process, eliminating the need for additional dedicated sensing components and simplifying the overall device architecture.

Inventive Principle:

Principle #25Self-service

2Ease of operation

If multiple touch input types (real-touch and proximity touch) are supported, then ease of operation is improved, but difficulty of detecting and measuring increases

Engineering Contradiction:

Improveease of operationVSAvoiddifficulty of detecting and measuring

Core Design Contradiction:

Ease of operationVSDifficulty of detecting and measuring

Solution Approach 1:

The system detects different touch types by monitoring changes in electrical parameters (capacitance, resistance) of the touch-sensitive display. By measuring variations in these parameters, the system can distinguish between real-touch and proximity touch without requiring separate detection mechanisms for each touch type.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces traditional mechanical touch switches with a touch-sensitive display that uses electrical field detection. This substitution allows for more sophisticated touch detection capabilities (including proximity and pressure sensing) while simplifying the physical structure and improving ease of operation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS8363008B2Mobile terminal and event control method thereof

Publication Date: 2013.01.29 LG ELECTRONICS INC

AI summary

Disclosed is an event control method of a mobile terminal, in which when a touch input is detected, a shape and size of a lock screen is changed according to the detected touch input value (e.g., touch time, the number of touch times or touch area) and simultaneously a threshold value necessary for unlocking the lock screen 50 is displayed, and then the lock screen is unlocked and switched to a menu screen when the touch input value reaches the threshold value, resulting in providing a user with more enjoyable and exciting user interface (UI).