Touch IC Signal Analysis for Normal Touch Detection
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Solution Overview
Problem
Current display devices with touch panels face processing speed reductions and malfunctions due to unnecessary operations when detecting broad touch regions or no touch, leading to inefficient processing and potential malfunctions.
Innovation Solution
A method and system for a display device that analyzes sensing signals from touch electrodes to determine if a touch is normal or abnormal, only extracting touch coordinates for normal touches and skipping this process for abnormal touches, thereby optimizing processing speed and preventing malfunctions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the touch IC sequentially performs operations of receiving sensing signals, detecting touch regions, and extracting touch coordinates for all sensing signals, then complete touch processing is achieved, but processing speed is reduced and malfunctions occur due to unnecessary operations
Solution Approach 1:
The patent applies partial action by performing complete touch coordinate extraction only when necessary (normal touch detected), and skipping it for abnormal touches. The touch IC detects touch region size first, and only proceeds to extract coordinates when the touch region meets normal criteria, thereby avoiding unnecessary operations that reduce processing speed without compromising reliability
Solution Approach 2:
The patent applies preliminary action by first detecting the touch region size before extracting touch coordinates. This preliminary detection step allows the system to identify abnormal touches (such as palm touches or no touch) and skip the coordinate extraction process for these cases, improving processing speed while maintaining accurate touch detection for normal touches
2Productivity
If the touch IC extracts touch coordinates for broad touch regions detected as normal touches, then touch coordinates are provided to the touch use unit, but the touch use unit may cause malfunctions due to incorrect coordinate interpretation
Solution Approach 1:
The patent applies partial action by performing complete touch coordinate extraction only when necessary (normal touch detected), and skipping it for abnormal touches. The touch IC detects touch region size first, and only proceeds to extract coordinates when the touch region meets normal criteria, thereby avoiding unnecessary operations that reduce processing speed without compromising reliability
Solution Approach 2:
The patent applies feedback by using the detected touch region size as feedback to determine whether to proceed with coordinate extraction. The touch IC continuously monitors touch region characteristics and adjusts its processing behavior accordingly, skipping coordinate extraction for abnormal touches and only processing normal touches, thereby preventing malfunctions in the touch use unit
Data Source
AI summary
Discussed is a display device and a driving method thereof. The driving method includes respectively receiving a plurality of sensing signals from a plurality of touch electrodes formed at a touch panel, determining whether there is a normal touch, by using a size of a touch region defined by the received sensing signals, and when it is determined that there is the normal touch, performing an operation of extracting touch coordinates of the touch region, or when it is determined that there is an abnormal touch, performing an operation of receiving the sensing signals without performing the operation of extracting the touch coordinates.