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公开(公告)号：US12282620B2
公开(公告)日：2025-04-22
申请号：US16037296
申请日：2018-07-17
Applicant: SITRONIX TECHNOLOGY CORP.
Inventor： Chia-Chi Cheng
Abstract: The present invention discloses a touch display driving circuit, which generates a plurality of scan signals and a plurality of source signals for driving a touch display panel to display images. The touch display driving circuit further comprises a touch detection circuit and one or more current-source. The touch detection circuit detects a plurality of sensing signals of the touch display panel in a touch detection cycle for detecting touches on the touch display panel. The one or more current-source outputs one or more current signal in the touch detection cycle for maintaining the average values of the levels of the plurality of scan signals or the average values of the levels of the plurality of source signal at a predetermined level and maintaining the display electrodes of the touch display panel floating. Thereby, in the touch detection cycle, the parasitic capacitance effect between the touch electrodes and the display electrodes of the touch display panel can be reduced and thus enhancing the touch sensitivity thereof.
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公开(公告)号：US12223865B2
公开(公告)日：2025-02-11
申请号：US18225880
申请日：2023-07-25
Applicant: SITRONIX TECHNOLOGY CORP.
Inventor： Chung-Hsin Su
IPC: G09G3/00 , G09G3/3208
Abstract: The present application provides a display driving circuit and a method for testing drivers thereof, which is applied to a control circuit for testing a first and a second driver connected in series. The control circuit transmits an enable signal, a first voltage level, and a second voltage level to the first driver for comparing a first returned voltage level and a second returned voltage level of the first driver with a first preset parameter and a second preset parameter. When the first returned voltage level is not equal to the first preset parameter or the second returned voltage level is not equal to the second preset parameter, the control circuit stops testing. Thereby, by using the voltage levels transmitted between the control circuit and the drivers, built-in self-tests may be performed, which simplifies the self-tests of the display driving circuit and no external testing device is required.
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公开(公告)号：US12118923B2
公开(公告)日：2024-10-15
申请号：US18091788
申请日：2022-12-30
Applicant: SITRONIX TECHNOLOGY CORP.
Inventor： Chung-Hsin Su
CPC classification number: G09G3/32 , G09G3/2092 , G09G2300/0408 , G09G2300/0426 , G09G2300/0452 , G09G2310/0267 , G09G2310/06 , G09G2320/0204 , G09G2320/0233 , G09G2330/06
Abstract: The present application provides a driving circuit for display panel, which comprises a driving-signal generating circuit generating a driving signal in a frame time for driving a display element of a display panel. The driving signal includes at least one first turn-on pulse width, at least one first turn-off pulse width, at least one second turn-on pulse width, and at least one second turn-off pulse width. The first turn-on pulse width is greater than the second turn-on pulse width. The first turn-off pulse width is smaller than the second turn-off pulse width. By adopting the driving circuit according to the present application, EMI may be reduced and the displaying quality may be improved.
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公开(公告)号：US12008949B2
公开(公告)日：2024-06-11
申请号：US18091693
申请日：2022-12-30
Applicant: SITRONIX TECHNOLOGY CORP.
Inventor： Chung-Hsin Su
CPC classification number: G09G3/32 , G09G3/2092 , G09G2300/0408 , G09G2300/0426 , G09G2300/0452 , G09G2310/0267 , G09G2310/06 , G09G2320/0204 , G09G2320/0233 , G09G2330/06
Abstract: The present application provides a driver for a display panel, the driver comprises at least one driving circuit, generating a plurality of Type-1 driving signals and a plurality of Type-2 driving signals for driving a plurality of pixels on display panel. The pixels include a plurality of first pixels and a plurality of second pixels adjacent to the first pixels. Each pixel includes a first display element, a second display element, a third display element. The Type-1 driving signals drive the first, second, and third display elements of the first pixels. The Type-2 driving signals drive the first, second, and third display elements of the second pixels. A first pulse of the Type-1 driving signals and a second pulse of the Type-2 driving signals are located at different time segments. By adopting the driver according to the present application, current concentration may be avoided and displaying quality may be improved.
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公开(公告)号：US11847280B2
公开(公告)日：2023-12-19
申请号：US15903445
申请日：2018-02-23
Applicant: SITRONIX TECHNOLOGY CORP.
Inventor： Min-Nan Liao
IPC: G06F3/044 , G06F3/047 , G02F1/1362 , G06F3/041 , G02F1/1333
CPC classification number: G06F3/044 , G02F1/136286 , G06F3/047 , G06F3/0412 , G02F1/13338 , G06F2203/04112 , G09G2300/0426 , G09G2310/0264
Abstract: The present invention provides a touch panel and the touch detection circuit thereof, which comprise a gate driving circuit, a source driving circuit, and a detection circuit. The gate driving circuit is coupled to a plurality of gate lines of a display panel, outputs a plurality of gate signals to the plurality of gate lines, and controls state transition of the plurality of gate signals. The source driving circuit is coupled to a plurality of source lines of the display panel. The detection circuit is coupled to the plurality of source lines or to a portion of the plurality of source lines. The detection circuit detects the levels of the plurality of signals on the coupled source lines when the gate signals change states and generates a plurality of detection signals.
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Patent Agency Ranking
公开(公告)号：US20230400946A1
公开(公告)日：2023-12-14
申请号：US18149684
申请日：2023-01-04
Applicant: SITRONIX TECHNOLOGY CORP.
Inventor： Chen-Yuan Yang , Hung-Yen Tai , Tzu-Hsuan Liu
IPC: G06F3/041
CPC classification number: G06F3/04182
Abstract: The present application provides a touch sensing circuit, which comprises a plurality of analog front-end circuits, a noise processing circuit, and a compensation circuit. The analog front-end circuits generate a plurality of output signals according to a plurality of sensing signals. The noise processing circuit is coupled to the analog front-end circuits and generates an average noise according to the output signals. The compensation circuit is coupled to the noise processing circuit and compensates the output signals according to the average noise. By applying the touch sensing circuit of the present application, the influence of common-mode noise may be suppressed and the sensitivity of sensing touches may be improved.
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公开(公告)号：US11776510B2
公开(公告)日：2023-10-03
申请号：US17023572
申请日：2020-09-17
Applicant: SITRONIX TECHNOLOGY CORP.
Inventor： Chih Hao Liu
CPC classification number: G09G5/393 , G09G3/3618 , G09G3/3688
Abstract: A screen update method for a display device and a driving device thereof, the frame update method includes: following a write-in command, controlling a driving circuit to drive a display panel to update a screen; the write-in command represents writing a display data to a storage element. The driving device includes: the driving circuit, which is coupled to the display panel and drives the display panel to update the screen; and a control circuit, which receives the write-in command and the display data, is coupled to the driving circuit; the control circuit follows the write-in command writing the display data to the storage element, and follows the write-in command to control the driving circuit to drive the display panel to update the screen.
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公开(公告)号：US11693519B2
公开(公告)日：2023-07-04
申请号：US16507264
申请日：2019-07-10
Applicant: SITRONIX TECHNOLOGY CORP.
Inventor： Chih-Yu Lin
CPC classification number: G06F3/04186 , G06F3/046
Abstract: The present invention relates to a proximity sensor and a proximity sensing method. The proximity sensor includes a sensing element and a sensing circuit. The sensing circuit is coupled to the sensing element and transmits a first driving signal and a second signal to the sensing element, respectively. The sensing element receives the first driving signal and the second driving signal, respectively, and generates a first sensing signal and a second sensing signal, respectively. The sensing circuit generates a proximity signal according to the first sensing signal and the second sensing signal. Therefore, the present invention may improve the accuracy of sensing the proximity of the human body whether near to the sensor. In addition, the sensing circuit is further coupled to a radio-frequency circuit, and the sensing circuit transmits a driving signal or/and receives a sensing signal according to the state of the radio-frequency circuit, thereby reducing interference of the sensing circuit to the radio-frequency circuit.
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公开(公告)号：US20220382415A1
公开(公告)日：2022-12-01
申请号：US17804021
申请日：2022-05-25
Applicant: SITRONIX TECHNOLOGY CORP.
Inventor： CHUN-LIANG CHEN , SHENG-YING LIN
Abstract: The present application discloses a capacitive sensing device and a sensing method thereof. A plurality of driving signals corresponding to a plurality of driving codes are outputted to a plurality of driving electrodes, thereby, a plurality of sensing signal are generated on a plurality of sensing electrodes corresponding to the driving electrodes, where the sensing signals are decoded to sensing data by an operation circuit. Hereby, the calculation function of the operation circuit according to the present application may be simplified.
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公开(公告)号：US20220300109A1
公开(公告)日：2022-09-22
申请号：US17655034
申请日：2022-03-16
Applicant: SITRONIX TECHNOLOGY CORP.
Inventor： TZU-HSUAN LIU , HUNG-YEN TAI , CHEN-YUAN YANG
Abstract: The present invention relates to a sensing circuit with signal compensation, which comprises a first sensing element, a second sensing element and a differential amplifying circuit, the differential amplifying circuit generates an output signal through a differential compensation according to a common mode voltage, a first sensing signal and a second sensing signal. Hereby, reducing the noise of the sensing circuit is achieved, and the interference of the display driving signal may be effectively improved.
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