Title:
タッチディスプレイパネル、タッチディスプレイ装置、及びその駆動方法
Document Type and Number:
Japanese Patent JP6770148
Kind Code:
B2
Abstract:
Discussed are a touch display panel, a touch display device, and a driving method thereof, wherein a constant voltage is applied to a cathode electrode during a period for sensing a finger touch or a pen touch, thereby performing touch sensing while performing display driving. In addition, a signal having the same phase and potential as the signal applied to the touch electrode is applied to the cathode electrode during a period for transmitting an uplink signal to the pen, thereby eliminating parasitic capacitance between the touch electrode and the cathode electrode, preventing transmission delay of the uplink signal, improving the recognition rate of the uplink signal, and enhancing the performance of pen-touch sensing.
Inventors:
Lee, Fiduc
Kim, Sangyu
Kim, Tae Yun
Lee, Yang Sik
Kim, jesus
Kim, Sangyu
Kim, Tae Yun
Lee, Yang Sik
Kim, jesus
Application Number:
JP2019134321A
Publication Date:
October 14, 2020
Filing Date:
July 22, 2019
Export Citation:
Assignee:
LG Display Company Limited
International Classes:
G06F3/041; G06F3/044; G09F9/00; G09F9/30; H01L27/32; H01L51/50; H05B33/04; H05B33/12; H05B33/22
Domestic Patent References:
| JP2018106600A | ||||
| JP2017004482A | ||||
| JP2018109963A | ||||
| JP2017130212A |
Foreign References:
| US20180113559 | ||||
| US20180039372 |
Attorney, Agent or Firm:
Sonoda/Kobayashi Patent Business Corporation