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公开(公告)号：US20220020673A1
公开(公告)日：2022-01-20
申请号：US17169553
申请日：2021-02-08
Applicant: Novatek Microelectronics Corp.
Inventor： Hong-Dyi Chang , Tai-Hung Lin , Jhih-Siou Cheng
IPC: H01L23/495 , H01L23/31 , H01L23/00
Abstract: A quad flat no-lead (QFN) package structure including a lead frame, a semiconductor die, and an encapsulating material. The lead frame includes a die pad and a plurality of contacts surrounding the die pad. The semiconductor die is disposed on the die pad and electrically connected to the plurality of contacts, wherein a shortest distance between the semiconductor die and a first side of the die pad is shorter than a shortest distance between the semiconductor die to a second side of the die pad, and the first side is opposite to the second side. The encapsulating material encapsulates the lead frame and the semiconductor die and partially exposing the plurality of contacts, wherein an aspect ratio of the QFN package is substantially equal to or greater than 3.
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公开(公告)号：US11227561B2
公开(公告)日：2022-01-18
申请号：US16805818
申请日：2020-03-01
Applicant: NOVATEK Microelectronics Corp.
Inventor： Chieh-Cheng Chen , Chih-Chia Kuo
IPC: G09G3/36
Abstract: A display driver circuit, configured to drive a display panel, includes a time recording circuit, a storage circuit, and an output control circuit. The time recording circuit calculates a first time interval between a first vertical synchronous pulse and a second vertical synchronous pulse subsequent to the first vertical synchronous pulse. The storage circuit stores a display data corresponding to the first vertical synchronous pulse when the first vertical synchronous pulse is received by the display driver circuit. The output control circuit is coupled with the time recording circuit and the storage circuit. When the display driver circuit receives the second vertical synchronous pulse, the output control circuit outputs data pieces, generated by dividing the display data, to the display panel. The data pieces are outputted at second time intervals, and each of the second time intervals is positively correlated with the first time interval.
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公开(公告)号：US11227141B2
公开(公告)日：2022-01-18
申请号：US16850015
申请日：2020-04-16
Applicant: Novatek Microelectronics Corp.
Inventor： Shao-Yang Chiang , I-Hsiu Chen , Hung-Yu Yang
Abstract: A fingerprint identification device and a fingerprint identification method are provided. The fingerprint identification device includes a self-emitting display panel, a fingerprint sensor and a processor. The self-emitting display panel displays at least one light pattern in a sensing region. The fingerprint sensor senses a finger object located above the sensing region of the self-emitting display panel to generate a first fingerprint image and a second fingerprint image corresponding to the at least one light pattern. The processor is coupled to the fingerprint sensor. The processor determines whether the first fingerprint image and the second fingerprint image have opposite tones to identify the finger object is a real finger or a fake finger.
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公开(公告)号：US20220012454A1
公开(公告)日：2022-01-13
申请号：US17369182
申请日：2021-07-07
Applicant: NOVATEK MICROELECTRONICS CORP.
Inventor： Wu-Wei Lin
Abstract: The present disclosure provides a fingerprint recognition driving method for a display panel, the display panel including a fingerprint recognition circuit, a fingerprint recognition driving circuit and a controller, the fingerprint recognition driving circuit being used to provide a fingerprint recognition driving signal to the fingerprint recognition circuit, the fingerprint recognition driving method including: periodically arranging, by the controller, time periods for display and touch in a case that the controller does not receive a fingerprint recognition start signal; periodically arranging, by the controller, time periods for display and touch and time periods for fingerprint recognition at intervals in a case that the controller receives the fingerprint recognition start signal; generating, by the controller, a first fingerprint recognition reset signal during at least one time period for display and touch, and the fingerprint recognition driving circuit being reset under the control of the first fingerprint recognition reset signal.
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公开(公告)号：US11223779B2
公开(公告)日：2022-01-11
申请号：US16899593
申请日：2020-06-12
Applicant: NOVATEK Microelectronics Corp.
Inventor： Dong-Hai Huang , Chi-Fan Liou , Jie-Jung Huang
IPC: H04N5/235
Abstract: An operating method of an image sensing device capable of detecting several light emitting diodes each having a flickering cycle time, the image sensing device includes several pixel circuits, each of the several pixel circuits includes a first sensing circuit and a second sensing circuit, the operating method including the following operations: operating the image sensing device in a first operating mode, including: sensing light by the first sensing circuit with a first exposure time longer than the flickering cycle time, thereby obtaining a first sensing result; sensing light, simultaneously by the first sensing circuit and the second sensing circuit with a second exposure time shorter than the flickering cycle time, thereby obtaining a second sensing result and a third sensing result; determining whether there is LED (light emitting diode) flickering or not according to the first sensing result, the second sensing result and the third sensing result.
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Patent Agency Ranking
公开(公告)号：US11210986B1
公开(公告)日：2021-12-28
申请号：US16984137
申请日：2020-08-03
Applicant: Novatek Microelectronics Corp.
Inventor： Cheng-Kai Kuei , Chin-Hung Hsu
IPC: G09G3/20
Abstract: A display driving apparatus with a power control circuit reducing power consumption includes: a shift register receiving a display data signal and outputting a plurality of data signals; a first latch receiving a Nth data signal of the plurality of data signals and outputting a first latched data signal according to a first gate driving signal; an analog signal processing circuit including a second latch coupling to the first latch and outputting a second latched data signal according to a second gate driving signal; a data comparator comparing the first latched data signal and the second latched data signal; and a power controller coupling to the data comparator and controlling a power level of the analog signal processing circuit.
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公开(公告)号：US11205367B2
公开(公告)日：2021-12-21
申请号：US16507055
申请日：2019-07-10
Applicant: Novatek Microelectronics Corp.
Inventor： Hsueh-Yen Yang , Kai-Min Yang , Feng-Ting Pai
IPC: G02F1/1335 , G09G3/20 , G09G3/36
Abstract: A display panel including a plurality of sub-pixel repeating units is provided. The sub-pixel repeating units are repeatedly arranged on the display panel. Each of the sub-pixel repeating units includes at least one first color sub-pixel and at least one second color sub-pixel. On the display panel, the adjacent first color sub-pixels form a first polygon, and the adjacent second color sub-pixels form a second polygon. The area of the first polygon is at least twice the area of the second polygon.
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公开(公告)号：US20210392260A1
公开(公告)日：2021-12-16
申请号：US16899593
申请日：2020-06-12
Applicant: NOVATEK Microelectronics Corp.
Inventor： Dong-Hai HUANG , Chi-Fan LIOU , Jie-Jung HUANG
IPC: H04N5/235
Abstract: An operating method of an image sensing device capable of detecting several light emitting diodes each having a flickering cycle time, the image sensing device includes several pixel circuits, each of the several pixel circuits includes a first sensing circuit and a second sensing circuit, the operating method including the following operations: operating the image sensing device in a first operating mode, including: sensing light by the first sensing circuit with a first exposure time longer than the flickering cycle time, thereby obtaining a first sensing result; sensing light, simultaneously by the first sensing circuit and the second sensing circuit with a second exposure time shorter than the flickering cycle time, thereby obtaining a second sensing result and a third sensing result; determining whether there is LED (light emitting diode) flickering or not according to the first sensing result, the second sensing result and the third sensing result.
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公开(公告)号：US20210389863A1
公开(公告)日：2021-12-16
申请号：US17213154
申请日：2021-03-25
Applicant: NOVATEK Microelectronics Corp.
Inventor： Yi-Ying Lin , Chih-Chang Lai
Abstract: The present invention provides a method of controlling a display panel having a sensing area and a non-sensing area. The sensing area includes a plurality of fingerprint sensing pixels, each of which is coupled to at least one control line. The non-sensing area includes a plurality of dummy pixels, each of which is coupled to at least one dummy line. The method includes steps of: applying a control signal on a first control line among the at least one control line or configuring the first control line to be floating, and applying a first anti-loading driving (ALD) signal corresponding to the control signal on a first dummy line among the at least one dummy line or configuring the first dummy line to be floating.
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公开(公告)号：US11199565B1
公开(公告)日：2021-12-14
申请号：US16932563
申请日：2020-07-17
Applicant: NOVATEK MICROELECTRONICS CORP.
Inventor： Ying-Hsiang Wang , Jung-Hsing Liao
Abstract: An undervoltage detection circuit includes a voltage divider, a voltage-to-current (V-to-I) converter and a current comparator. The voltage divider divides a supply voltage to generate a divided voltage. The V-to-I converter converts the divided voltage into a first current based on a first V-to-I transfer function, and converts the divided voltage into a second current based on a second V-to-I transfer function different from the first V-to-I transfer function. The current comparator compares the first and second currents to generate a comparison signal that indicates whether the supply voltage is sufficiently large.
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