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AssigneeHiDeep Inc.
InventorsHwan Hee Lee, Sang Sic Yoon, Bon Kee Kim, Myung Jun Jin
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A touch input device capable of detecting a pressure of a touch on a touch surface may be provided. The touch input device includes: a display module; and a pressure sensor which is disposed at a position where a distance between the pressure sensor and a reference potential layer is changeable according to the touch on the touch surface. The distance is changeable according to a pressure magnitude of the touch. The pressure sensor outputs a signal including information on a capacitance which is changed according to the distance. The pressure sensor includes a plurality of electrodes to form a plurality of channels. The pressure magnitude of the touch is detected on the basis of a change amount of the capacitance detected in each of the channels and an SNR improvement scaling factor assigned to each of the channels.
A touch input device capable of detecting a pressure of a touch on a touch surface, the touch input device comprising:
A method for detecting a pressure magnitude of, a touch by using a plurality of channels in a touch input device which comprises a display module and constitutes the plurality of channels for detecting the pressure, the method comprising detecting the pressure magnitude the touch on the basis of a change amount of capacitances detected in the respective channels and an SNR improvement scaling factor assigned to each of the channels,
Dependencies are inferred from the claim text.
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By capacitive means: using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
Control or interface arrangements specially adapted for digitisers: connections between sensors and controllers, e.g. routing lines between…
Control or interface arrangements specially adapted for digitisers: for error correction or compensation, e.g. based on parallax, calibration or…
By capacitive means: using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
About 9 years 11 months of term left · ends 4 Oct 2036 (estimated)
The present application is a U.S. national stage application under 35 U.S.C. § 371 of PCT Application No. PCT/IB2016/051998, filed Apr. 8, 2016, the disclosure of which is incorporated herein by reference in its entirety.
The present disclosure relates to a pressure sensor forming a plurality of channels for pressure detection and a touch input device including the same, and more particularly to a pressure sensor which is applied to a touch input device configured to detect a touch position and forms a plurality of channels for detecting a touch pressure, the touch input device including the same, and a pressure detection method using the same.
Various kinds of input devices are being used to operate a computing system. For example, the input device includes a button, key, joystick and touch screen. Since the touch screen is easy and simple to operate, the touch screen is increasingly being used to operate the computing system.
FIG. 1 is a schematic view of a configuration of a capacitance type touch sensor panel and the operation thereof;
FIGS. 2a to 2e are conceptual views showing a relative position of the touch sensor panel with respect to a display panel in a touch input device according to the embodiment;
FIGS. 3a to 3h are cross sectional views of an exemplary pressure sensor including a pressure electrode according to the embodiment of the present invention;
The following detailed description of the present invention shows a specified embodiment of the present invention and will be provided with reference to the accompanying drawings. The embodiment will be described in enough detail that those skilled in the art are able to embody the present invention. It should be understood that various embodiments of the present invention are different from each other and need not be mutually exclusive. Similar reference numerals in the drawings designate the same or similar functions in many aspects.
Hereinafter, a pressure sensor for pressure detection and a touch input device to which a pressure detection module including the pressure sensor according to an embodiment of the present invention can be applied will be described with reference to the accompanying drawings. Hereinafter, while a capacitance type touch sensor panel 100 is exemplified below, the touch sensor panel 100 capable of detecting a touch position in any manner may be applied.
FIG. 1 is a schematic view of a configuration of the capacitance type touch sensor panel 100 which is included in the touch input device to which a pressure sensor 440 and the pressure detection module including the pressure sensor 440 according to the embodiment of the present invention can be applied, and the operation of the touch sensor panel. Referring to FIG. 1, the touch sensor panel 100 may include a plurality of drive electrodes TX1 to TXn and a plurality of receiving electrodes RX1 to RXm, and may include a drive unit 120 which applies a driving signal to the plurality of drive electrodes TX1 to TXn for the purpose of the operation of the touch sensor panel 100, and a sensing unit 110 which detects whether or not the touch occurs and/or the touch position by receiving a sensing signal including information on the capacitance change amount changing according to the touch on the touch surface of the touch sensor panel 100.