Patents by Inventor Suk-Bae Cha
Suk-Bae Cha 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).
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Publication number: 20220307708Abstract: An air purification device includes a housing configured to house a desiccant material filter and a fan coupled to the housing and configured to cause airflow to pass through the desiccant material filter. Moisture is to be collected from the airflow by the desiccant material filter. The moisture is to be removed from the desiccant material filter via one or more of heat or microwave energy.Type: ApplicationFiled: March 14, 2022Publication date: September 29, 2022Inventors: Chang Yul Cha, Suk-Bae Cha, George Crandell, Craig Henricksen, William Walden
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Publication number: 20220152540Abstract: A microwave enhanced air disinfection (MEAD) device includes a housing and a microwave generator coupled to the housing. The microwave generator is configured to generate microwave energy. The MEAD device further includes a multi-component filter disposed in the housing. The multi-component filter is configured to collect contaminants from airflow. At least a portion of the contaminants from the airflow is to be destroyed at least one of directly or indirectly via the microwave energy.Type: ApplicationFiled: November 9, 2021Publication date: May 19, 2022Inventors: Chang Yul Cha, Suk-Bae Cha, George Crandell, Craig Henricksen, William Walden
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Publication number: 20220152264Abstract: A method includes identifying a schedule to operate a microwave enhanced air disinfection (MEAD) system and causing, based on the schedule, intermittent generation of microwave energy by a microwave generator of the MEAD system. A multi-component filter disposed in a housing of the MEAD system is configured to collect contaminants from airflow through the housing. At least a portion of the contaminants from the airflow is to be destroyed at least one of directly or indirectly via the microwave energy.Type: ApplicationFiled: November 9, 2021Publication date: May 19, 2022Inventors: Chang Yul Cha, Suk-Bae Cha, George Crandell, Craig Henricksen, William Walden
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Patent number: 11237667Abstract: An apparatus for combined capacitance and pressure sensing is described. The apparatus includes a multiplexer (75) having a plurality of inputs (76) and an output (F), a touch panel (29), and a front end module (3). The touch panel includes a layer structure (5; FIG. 15) comprising one or more layers, each extending perpendicularly to a thickness direction, the one or more layers including a layer of piezoelectric material (10; FIG. 15), the layer structure having first (6) and second (7; FIG. 15) opposite faces, and the layer(s) arranged between the first and second faces such that the thickness direction of each layer is perpendicular to the first and second faces. The touch panel also includes a plurality of first electrodes (8) disposed on the first face, each first electrode connected to a respective input of the multiplexer. The touch panel also includes at least one second electrode (9) disposed on the second face.Type: GrantFiled: April 16, 2019Date of Patent: February 1, 2022Assignee: Cambridge Touch Technologies Ltd.Inventors: Arokia Nathan, Jackson Chi-Sun Lai, Corbin Church, Suk-Bae Cha
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Patent number: 10496210Abstract: A pressure sensing architecture for use with liquid crystal (LC), organic light emitting diode (OLED), electrophoretic, or other similarly fabricated displays. The described architecture includes a bottom TFT structure and a top structure with color filter material, and with liquid crystal, electrophoretic or OLED material provided in between. A piezoelectric or equivalent material is provided within the display assembly. Transmitting and receiving electrodes can be used to electrically bias the piezoelectric or equivalent material, which provides an analog electrical signal in response to incident touch pressure.Type: GrantFiled: January 21, 2018Date of Patent: December 3, 2019Assignee: Cambridge Touch Technologies Ltd.Inventors: Arokia Nathan, Jackson Chi-Sun Lai, Suk-Bae Cha, Corbin Church
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Publication number: 20190253053Abstract: Integrated touch displays with combined pressure and projected capacitance touch capabilities are provided. A sensing electrode layer and, optionally, a driving electrode layer, has a plurality of discrete pads deposited, patterned, printed or laminated on a cover lens or color filter substrate. Each of the discrete pads may be formed of an optically transparent conductor.Type: ApplicationFiled: April 22, 2019Publication date: August 15, 2019Inventors: Arokia Nathan, Jackson Chi-Sun Lai, Suk-Bae Cha, Corbin Church
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Publication number: 20190243503Abstract: An apparatus for combined capacitance and pressure sensing is described. The apparatus includes a multiplexer (75) having a plurality of inputs (76) and an output (F), a touch panel (29), and a front end module (3). The touch panel includes a layer structure (5; FIG. 15) comprising one or more layers, each extending perpendicularly to a thickness direction, the one or more layers including a layer of piezoelectric material (10; FIG. 15), the layer structure having first (6) and second (7; FIG. 15) opposite faces, and the layer(s) arranged between the first and second faces such that the thickness direction of each layer is perpendicular to the first and second faces. The touch panel also includes a plurality of first electrodes (8) disposed on the first face, each first electrode connected to a respective input of the multiplexer. The touch panel also includes at least one second electrode (9) disposed on the second face.Type: ApplicationFiled: April 16, 2019Publication date: August 8, 2019Inventors: Arokia Nathan, Jackson Chi-Sun Lai, Corbin Church, Suk-Bae Cha
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Publication number: 20190243502Abstract: An apparatus for combined capacitance and pressure sensing is described. The apparatus includes a multiplexer (75) having a plurality of inputs (76) and an output (F), a touch panel (29), and a front end module (3). The touch panel includes a layer structure (5; FIG. 15) comprising one or more layers, each extending perpendicularly to a thickness direction, the one or more layers including a layer of piezoelectric material (10; FIG. 15), the layer structure having first (6) and second (7; FIG. 15) opposite faces, and the layer(s) arranged between the first and second faces such that the thickness direction of each layer is perpendicular to the first and second faces. The touch panel also includes a plurality of first electrodes (8) disposed on the first face, each first electrode connected to a respective input of the multiplexer. The touch panel also includes at least one second electrode (9) disposed on the second face.Type: ApplicationFiled: April 16, 2019Publication date: August 8, 2019Inventors: Arokia Nathan, Jackson Chi-Sun Lai, Corbin Church, Suk-Bae Cha
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Patent number: 10318038Abstract: An apparatus for combined capacitance and pressure sensing is described. The apparatus includes a multiplexer (75) having a plurality of inputs (76) and an output (F), a touch panel (29), and a front end module (3). The touch panel includes a layer structure (5; FIG. 15) comprising one or more layers, each extending perpendicularly to a thickness direction, the one or more layers including a layer of piezoelectric material (10; FIG. 15), the layer structure having first (6) and second (7; FIG. 15) opposite faces, and the layer(s) arranged between the first and second faces such that the thickness direction of each layer is perpendicular to the first and second faces. The touch panel also includes a plurality of first electrodes (8) disposed on the first face, each first electrode connected to a respective input of the multiplexer. The touch panel also includes at least one second electrode (9) disposed on the second face.Type: GrantFiled: December 23, 2015Date of Patent: June 11, 2019Assignee: Cambridge Touch Technologies Ltd.Inventors: Arokia Nathan, Jackson Chi-Sun Lai, Suk-Bae Cha, Corbin Church
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Patent number: 10310659Abstract: An apparatus for combined capacitance and pressure sensing is described. The apparatus includes a multiplexer (75) having a plurality of inputs (76) and an output (F), a touch panel (29), and a front end module (3). The touch panel includes a layer structure (5; FIG. 15) comprising one or more layers, each extending perpendicularly to a thickness direction, the one or more layers including a layer of piezoelectric material (10; FIG. 15), the layer structure having first (6) and second (7; FIG. 15) opposite faces, and the layer(s) arranged between the first and second faces such that the thickness direction of each layer is perpendicular to the first and second faces. The touch panel also includes a plurality of first electrodes (8) disposed on the first face, each first electrode connected to a respective input of the multiplexer. The touch panel also includes at least one second electrode (9) disposed on the second face.Type: GrantFiled: December 22, 2015Date of Patent: June 4, 2019Assignee: Cambridge Touch Technologies Ltd.Inventors: Arokia Nathan, Jackson Chi-Sun Lai, Suk-Bae Cha, Corbin Church
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Patent number: 10126807Abstract: Switching of power modes for touch screens is disclosed. In example embodiments a touch detect mode may be activated for touchscreen operation. The touchscreen may be a projected capacitance screen that includes force sensing based on piezo electric sensors. The touch detect mode may be a low power mode in which at least one channel, but fewer than all channels of the touch screen are monitored. When is determined that a touch event has occurred a switch to a scan mode for touchscreen operation may be performed. Scan mode may be a higher power mode in which all channels of the touch screen are scanned at least for position sensing. The touch detect mode monitoring may be implemented by monitoring the total charge on the at least one channel and providing a voltage signal. When the voltage signal meets predetermined criteria an indication of a touch event may be generated.Type: GrantFiled: February 17, 2015Date of Patent: November 13, 2018Assignee: Cambridge Touch Technologies Ltd.Inventors: Arokia Nathan, Jackson Chi-Sun Lai, Suk-Bae Cha, Corbin Church
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Publication number: 20180224994Abstract: A pressure sensing architecture for use with liquid crystal (LC), organic light emitting diode (OLED), electrophoretic, or other similarly fabricated displays. The described architecture includes a bottom TFT structure and a top structure with color filter material, and with liquid crystal, electrophoretic or OLED material provided in between. A piezoelectric or equivalent material is provided within the display assembly. Transmitting and receiving electrodes can be used to electrically bias the piezoelectric or equivalent material, which provides an analog electrical signal in response to incident touch pressure.Type: ApplicationFiled: March 30, 2018Publication date: August 9, 2018Inventors: Arokia Nathan, Jackson Chi-Sun Lai, Suk-Bae Cha, Corbin Church
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Publication number: 20180143725Abstract: A pressure sensing architecture for use with liquid crystal (LC), organic light emitting diode (OLED), electrophoretic, or other similarly fabricated displays. The described architecture includes a bottom TFT structure and a top structure with color filter material, and with liquid crystal, electrophoretic or OLED material provided in between. A piezoelectric or equivalent material is provided within the display assembly. Transmitting and receiving electrodes can be used to electrically bias the piezoelectric or equivalent material, which provides an analog electrical signal in response to incident touch pressure.Type: ApplicationFiled: January 21, 2018Publication date: May 24, 2018Inventors: Arokia Nathan, Jackson Chi-Sun Lai, Suk-Bae Cha, Corbin Church
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Publication number: 20170371470Abstract: An apparatus for combined capacitance and pressure sensing is described. The apparatus includes a multiplexer (75) having a plurality of inputs (76) and an output (F), a touch panel (29), and a front end module (3). The touch panel includes a layer structure (5; FIG. 15) comprising one or more layers, each extending perpendicularly to a thickness direction, the one or more layers including a layer of piezoelectric material (10; FIG. 15), the layer structure having first (6) and second (7; FIG. 15) opposite faces, and the layer(s) arranged between the first and second faces such that the thickness direction of each layer is perpendicular to the first and second faces. The touch panel also includes a plurality of first electrodes (8) disposed on the first face, each first electrode connected to a respective input of the multiplexer. The touch panel also includes at least one second electrode (9) disposed on the second face.Type: ApplicationFiled: December 23, 2015Publication date: December 28, 2017Inventors: Arokia Nathan, Jackson Chi-Sun Lai, Suk-Bae Cha, Corbin Church
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Publication number: 20170364193Abstract: An apparatus for combined capacitance and pressure sensing is described. The apparatus includes a multiplexer (75) having a plurality of inputs (76) and an output (F), a touch panel (29), and a front end module (3). The touch panel includes a layer structure (5; FIG. 15) comprising one or more layers, each extending perpendicularly to a thickness direction, the one or more layers including a layer of piezoelectric material (10; FIG. 15), the layer structure having first (6) and second (7; FIG. 15) opposite faces, and the layer(s) arranged between the first and second faces such that the thickness direction of each layer is perpendicular to the first and second faces. The touch panel also includes a plurality of first electrodes (8) disposed on the first face, each first electrode connected to a respective input of the multiplexer. The touch panel also includes at least one second electrode (9) disposed on the second face.Type: ApplicationFiled: December 22, 2015Publication date: December 21, 2017Inventors: Arokia Nathan, Jackson Chi-Sun Lai, Suk-Bae Cha, Corbin Church
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Publication number: 20170359064Abstract: Integrated touch displays with combined pressure and projected capacitance touch capabilities are provided. A sensing electrode layer and, optionally, a driving electrode layer, has a plurality of discrete pads deposited, patterned, printed or laminated on a cover lens or color filter substrate. Each of the discrete pads may be formed of an optically transparent conductor.Type: ApplicationFiled: August 6, 2017Publication date: December 14, 2017Inventors: Arokia Nathan, Jackson Chi-Sun Lai, Suk-Bae Cha, Corbin Church
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Publication number: 20160179276Abstract: An apparatus for combined capacitance and pressure sensing is described. The apparatus includes a multiplexer (75) having a plurality of inputs (76) and an output (F), a touch panel (29), and a front end module (3). The touch panel includes a layer structure (5; FIG. 15) comprising one or more layers, each extending perpendicularly to a thickness direction, the one or more layers including a layer of piezoelectric material (10; FIG. 15), the layer structure having first (6) and second (7; FIG. 15) opposite faces, and the layer(s) arranged between the first and second faces such that the thickness direction of each layer is perpendicular to the first and second faces. The touch panel also includes a plurality of first electrodes (8) disposed on the first face, each first electrode connected to a respective input of the multiplexer. The touch panel also includes at least one second electrode (9) disposed on the second face.Type: ApplicationFiled: December 22, 2015Publication date: June 23, 2016Inventors: Arokia Nathan, Jackson Chi-Sun Lai, Suk-Bae Cha, Corbin Church
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Publication number: 20150234446Abstract: Switching of power modes for touch screens is disclosed. In example embodiments a touch detect mode may be activated for touchscreen operation. The touchscreen may be a projected capacitance screen that includes force sensing based on piezo electric sensors. The touch detect mode may be a low power mode in which at least one channel, but fewer than all channels of the touch screen are monitored. When is determined that a touch event has occurred a switch to a scan mode for touchscreen operation may be performed. Scan mode may be a higher power mode in which all channels of the touch screen are scanned at least for position sensing. The touch detect mode monitoring may be implemented by monitoring the total charge on the at least one channel and providing a voltage signal. When the voltage signal meets predetermined criteria an indication of a touch event may be generated.Type: ApplicationFiled: February 17, 2015Publication date: August 20, 2015Inventors: Arokia Nathan, Jackson Chi-Sun Lai, Suk-Bae Cha, Corbin Church
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Publication number: 20140008203Abstract: Integrated touch displays with combined pressure and projected capacitance touch capabilities are provided. A sensing electrode layer and, optionally, a driving electrode layer, has a plurality of discrete pads deposited, patterned, printed or laminated on a cover lens or color filter substrate. Each of the discrete pads may be formed of an optically transparent conductor.Type: ApplicationFiled: July 3, 2013Publication date: January 9, 2014Inventors: Arokia Nathan, Jackson Chi Sun Lai, Suk-Bae Cha, Corbin Church
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Publication number: 20130265256Abstract: A pressure sensing architecture for use with liquid crystal (LC), organic light emitting diode (OLED), electrophoretic, or other similarly fabricated displays. The described architecture includes a bottom TFT structure and a top structure with color filter material, and with liquid crystal, electrophoretic or OLED material provided in between. A piezoelectric or equivalent material is provided within the display assembly. Transmitting and receiving electrodes can be used to electrically bias the piezoelectric or equivalent material, which provides an analog electrical signal in response to incident touch pressure.Type: ApplicationFiled: April 5, 2013Publication date: October 10, 2013Inventors: Arokia Nathan, Jackson Chi Sun Lai, Suk-Bae Cha, Corbin Church