Patents by Inventor Paridhi Sharma
Paridhi Sharma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11556202Abstract: An apparatus (2, 22) is described which includes a touch panel (1, 21). The touch panel (1, 21) includes a layer of piezoelectric material (4) disposed between a number of sensing electrodes (5, 23, 24) and at least one counter electrode (6). The apparatus (2, 22) also includes a touch controller (3) connected to the touch panel (1, 21). The touch controller (3) is configured to determine, in response to receiving piezoelectric signals (7) from one or more of the sensing electrodes (5, 23, 24), a location (9) and an applied force (10) corresponding to a user interaction (11) with the touch panel (1, 21). The touch controller (3) is configured to determine a capacitance value (20) of one or more of the sensing electrodes (5). The touch controller is configured to operate in a force-based mode, a capacitance-based mode or a mixed force-capacitance mode depending on the type of input received.Type: GrantFiled: March 13, 2020Date of Patent: January 17, 2023Assignee: Cambridge Touch Technologies Ltd.Inventors: Arokia Nathan, Michael Astley, Constantinos Tsangarides, Paridhi Sharma, Riccardo Micci, Xiang Cheng, Jiahao Li
-
Patent number: 11494022Abstract: A force-sensing touch panel (31) is described which includes a layer structure stacked in a thickness direction between first and second surfaces. The layer structure includes from first surface to second surface, a number of first electrodes (7) and a number of second electrodes (8), a layer of piezoelectric material (9), and a number of third electrodes (30). The first and second electrodes (7, 8) are configured to define a coordinate system for sensing a location of a force applied to the touch panel in a plane perpendicular to the thickness direction. The third electrodes (30) are configured such that signals received from the first, second and third electrodes (7, 8, 30) enable determining unique locations corresponding to two or more forces applied to the touch panel (31) concurrently.Type: GrantFiled: February 17, 2020Date of Patent: November 8, 2022Assignee: Cambridge Touch Technologies Ltd.Inventors: Michael Astley, Arokia Nathan, Constantinos Tsangarides, Paridhi Sharma, Antonio Afonso Bras Ferreira Marques, Xiang Cheng, Jiahao Li
-
Patent number: 11474653Abstract: A device (1) includes a body (2) and a touch panel (3) supported by, integrated with, or underlying the body (2). The touch panel (3) includes a layer of piezoelectric material (5) disposed between a plurality of first electrodes (6) and at least one second electrode (7). The device (1) also includes at least one second piezoelectric input region (8) supported by, integrated with, or underlying a portion of the body (2) which does not correspond to the touch panel (3). The device (1) is configured to receive user input using the touch panel (3) and/or at least one piezoelectric input region (8).Type: GrantFiled: October 22, 2020Date of Patent: October 18, 2022Assignee: Cambridge Touch Technologies Ltd.Inventors: Antonio Afonso Bras Ferreira Marques, Arokia Nathan, Michael Astley, Jiahao Li, Xiang Cheng, Paridhi Sharma, Constantinos Tsangarides
-
Patent number: 11429240Abstract: A touch sensor (1) for combined capacitive touch and force sensing is described. The touch sensor (1) includes number plurality of first electrodes (4) and a number of second electrodes (5). The second electrodes (5) are insulated from the first electrodes (4). The first and second electrodes (4, 5) form a grid for capacitive touch sensing. The touch sensor (1) also includes a transparent cover (6). The touch sensor (1) also includes a transparent piezoelectric film (3) arranged between the transparent cover (6) and the first and second electrodes (4, 5). The touch sensor (1) also includes a patterned counter electrode (8) disposed between the transparent piezoelectric film (3) and the transparent cover (6). The patterned counter electrode (8) is a conductive grid formed from the union of plurality of counter electrode line elements (9). A pitch of the counter electrode line elements (9) is larger than a pitch of the first electrodes (4) and/or second electrodes (5).Type: GrantFiled: January 23, 2020Date of Patent: August 30, 2022Assignee: Cambridge Touch Technologies Ltd.Inventors: Constantinos Tsangarides, Paridhi Sharma, Michael Astley, Arokia Nathan, Xiang Cheng, Jiahao Li
-
Publication number: 20220171489Abstract: An apparatus (2, 22) is described which includes a touch panel (1, 21). The touch panel (1, 21) includes a layer of piezoelectric material (4) disposed between a number of sensing electrodes (5, 23, 24) and at least one counter electrode (6). The apparatus (2, 22) also includes a touch controller (3) connected to the touch panel (1, 21). The touch controller (3) is configured to determine, in response to receiving piezoelectric signals (7) from one or more of the sensing electrodes (5, 23, 24), a location (9) and an applied force (10) corresponding to a user interaction (11) with the touch panel (1, 21). The touch controller (3) is configured to determine a capacitance value (20) of one or more of the sensing electrodes (5). The touch controller is configured to operate in a force-based mode, a capacitance-based mode or a mixed force-capacitance mode depending on the type of input received.Type: ApplicationFiled: March 13, 2020Publication date: June 2, 2022Inventors: Arokia Nathan, Michael Astley, Constantinos Tsangarides, Paridhi Sharma, Riccardo Micci, Xiang Cheng, Jiahao Li
-
Publication number: 20220147187Abstract: A touch sensor (1) for combined capacitive touch and force sensing is described. The touch sensor (1) includes number plurality of first electrodes (4) and a number of second electrodes (5). The second electrodes (5) are insulated from the first electrodes (4). The first and second electrodes (4, 5) form a grid for capacitive touch sensing. The touch sensor (1) also includes a transparent cover (6). The touch sensor (1) also includes a transparent piezoelectric film (3) arranged between the transparent cover (6) and the first and second electrodes (4, 5). The touch sensor (1) also includes a patterned counter electrode (8) disposed between the transparent piezoelectric film (3) and the transparent cover (6). The patterned counter electrode (8) is a conductive grid formed from the union of plurality of counter electrode line elements (9). A pitch of the counter electrode line elements (9) is larger than a pitch of the first electrodes (4) and/or second electrodes (5).Type: ApplicationFiled: January 23, 2020Publication date: May 12, 2022Inventors: Constantinos Tsangarides, Paridhi Sharma, Michael Astley, Arokia Nathan, Xiang Cheng, Jiahao Li
-
Publication number: 20220137767Abstract: A force-sensing touch panel (31) is described which includes a layer structure stacked in a thickness direction between first and second surfaces. The layer structure includes from first surface to second surface, a number of first electrodes (7) and a number of second electrodes (8), a layer of piezoelectric material (9), and a number of third electrodes (30). The first and second electrodes (7, 8) are configured to define a coordinate system for sensing a location of a force applied to the touch panel in a plane perpendicular to the thickness direction. The third electrodes (30) are configured such that signals received from the first, second and third electrodes (7, 8, 30) enable determining unique locations corresponding to two or more forces applied to the touch panel (31) concurrently.Type: ApplicationFiled: February 17, 2020Publication date: May 5, 2022Inventors: Michael Astley, Arokia Nathan, Constantinos Tsangarides, Paridhi Sharma, Afonso Marques, Xiang Cheng, Jiahao Li
-
Publication number: 20210124458Abstract: A device (1) includes a body (2) and a touch panel (3) supported by, integrated with, or underlying the body (2). The touch panel (3) includes a layer of piezoelectric material (5) disposed between a plurality of first electrodes (6) and at least one second electrode (7). The device (1) also includes at least one second piezoelectric input region (8) supported by, integrated with, or underlying a portion of the body (2) which does not correspond to the touch panel (3). The device (1) is configured to receive user input using the touch panel (3) and/or at least one piezoelectric input region (8).Type: ApplicationFiled: October 22, 2020Publication date: April 29, 2021Inventors: Afonso Marques, Arokia Nathan, Michael Astley, Jiahao Li, Xiang Cheng, Paridhi Sharma, Constantinos Tsangarides