TW201612700A - Touch panel and touch detection method of the same - Google Patents

Touch panel and touch detection method of the same

Info

Publication number
TW201612700A
TW201612700A TW104100312A TW104100312A TW201612700A TW 201612700 A TW201612700 A TW 201612700A TW 104100312 A TW104100312 A TW 104100312A TW 104100312 A TW104100312 A TW 104100312A TW 201612700 A TW201612700 A TW 201612700A
Authority
TW
Taiwan
Prior art keywords
touch
values
voltage values
differential
detection method
Prior art date
Application number
TW104100312A
Other languages
Chinese (zh)
Other versions
TWI543033B (en
Inventor
can-kun Zhang
Tsai-Kuei Wei
Wanqiu Wang
Original Assignee
Tpk Touch Solutions Xiamen Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tpk Touch Solutions Xiamen Inc filed Critical Tpk Touch Solutions Xiamen Inc
Publication of TW201612700A publication Critical patent/TW201612700A/en
Application granted granted Critical
Publication of TWI543033B publication Critical patent/TWI543033B/en

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Abstract

A touch detection method used in a touch panel that includes the steps outlined below is provided. Initial detected voltage values are retrieved by a touch unit group in the touch panel during an initial state such that a differential calculation is performed to obtain initial differential voltage values stored as baseline values. Detected voltage values are retrieved by the touch unit group during an operation state such that a differential calculation is performed to obtain differential voltage values. Difference values are generated by subtracting the differential voltage values and the baseline values such that whether the touch unit group includes at least one touch applying point and a touch removing point is determined according to an order of the difference values. When a touch removing point is included, the baseline values are updated to be the differential voltage values.
TW104100312A 2014-09-26 2015-01-06 Touch panel and touch detection method of the same TWI543033B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410502052.9A CN105511655B (en) 2014-09-26 2014-09-26 Touch panel and its method for detecting

Publications (2)

Publication Number Publication Date
TW201612700A true TW201612700A (en) 2016-04-01
TWI543033B TWI543033B (en) 2016-07-21

Family

ID=54153440

Family Applications (2)

Application Number Title Priority Date Filing Date
TW104100312A TWI543033B (en) 2014-09-26 2015-01-06 Touch panel and touch detection method of the same
TW104200137U TWM505646U (en) 2014-09-26 2015-01-06 Touch panel

Family Applications After (1)

Application Number Title Priority Date Filing Date
TW104200137U TWM505646U (en) 2014-09-26 2015-01-06 Touch panel

Country Status (2)

Country Link
CN (1) CN105511655B (en)
TW (2) TWI543033B (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110068810A1 (en) * 2009-04-03 2011-03-24 Tpo Displays Corp. Sensing method and driving circuit of capacitive touch screen
TWI421755B (en) * 2009-09-25 2014-01-01 Ite Tech Inc Touch panel and touching point detection method thereof
CN102043549B (en) * 2009-10-15 2013-01-02 联阳半导体股份有限公司 Touch panel and touch point sensing method
CN102109937B (en) * 2009-12-24 2013-06-26 联阳半导体股份有限公司 Locating device and locating method for touch device
CN102193693B (en) * 2010-03-17 2014-03-19 群康科技(深圳)有限公司 Touch panel and differential identification method thereof
CN102968217B (en) * 2012-12-07 2016-01-20 深圳市汇顶科技股份有限公司 The datum renewal method of touch-screen, system and touch control terminal

Also Published As

Publication number Publication date
TWI543033B (en) 2016-07-21
CN105511655A (en) 2016-04-20
TWM505646U (en) 2015-07-21
CN105511655B (en) 2018-08-07

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