Title:
APPARATUS AND METHOD FOR CALIBRATING FREQUENCY POINTS OF TOUCH SCREEN, TOUCH SCREEN, AND DISPLAY APPARATUS
Document Type and Number:
WIPO Patent Application WO/2018/157595
Kind Code:
A1
Abstract:
The present invention belongs to the technical field of display, and relates to an apparatus and method for calibrating frequency points of a touch screen, a touch screen, and a display apparatus. The apparatus for calibrating frequency points of a touch screen is used for automatically calibrating capacitance values, at different working frequency points, of an inductive capacitor in a touch screen, and comprises a calibration module (1) and a comparison module (2), wherein the calibration module (1) is respectively connected to the inductive capacitor and the comparison module (2), and is used for transmitting a calibration excitation signal to the touch screen, so as to start a calibration operation for different frequency points, and calibrating the inductive capacitor in the touch screen according to a comparison result of the comparison module (2); and the comparison module (2) is used for comparing a pre-set capacitor with the inductive capacitor at a current working frequency point in the touch screen, so as to obtain a comparison result, and feeding the comparison result back to the calibration module (1), so that the calibration module (1) calibrates the capacitance value of the inductive capacitor to be a capacitance value matching the current working frequency point. The apparatus for calibrating frequency points of a touch screen can automatically calibrate capacitance values, at different frequency points, of an inductive capacitor in a touch screen according to different environments.
Inventors:
SUN JIGANG (CN)
SUN WEI (CN)
CHEN PENGJUN (CN)
SUN WEI (CN)
CHEN PENGJUN (CN)
Application Number:
PCT/CN2017/104175
Publication Date:
September 07, 2018
Filing Date:
September 29, 2017
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
ORDOS YUANSHENG OPTOELECTRONICS CO LTD (CN)
ORDOS YUANSHENG OPTOELECTRONICS CO LTD (CN)
International Classes:
G06F3/041; G06F3/044
Foreign References:
| CN106909252A | 2017-06-30 | |||
| CN102681724A | 2012-09-19 | |||
| CN104254824A | 2014-12-31 | |||
| TW201035842A | 2010-10-01 | |||
| CN101566901A | 2009-10-28 | |||
| JP2011197942A | 2011-10-06 |
Attorney, Agent or Firm:
TEE&HOWE INTELLECTUAL PROPERTY ATTORNEYS (CN)
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