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公开(公告)号：US11688327B2
公开(公告)日：2023-06-27
申请号：US17958449
申请日：2022-10-03
Applicant: Novatek Microelectronics Corp.
Inventor： Cheng-Tsu Hsieh
IPC: G09G3/20
CPC classification number: G09G3/2092 , G09G2310/0267 , G09G2310/0275 , G09G2310/0291
Abstract: The disclosure provides a source driving circuit adapted to a display panel. The source driving circuit includes a data channel and a control circuit. The data channel is configured to be coupled to a data line of the display panel and drive the data line of the display panel sequentially according to first display data and second display data. The first display data corresponds to a first scan line of the display panel, and the second display data corresponds to a second scan line of the display panel next to the first scan line of the display panel. The control circuit is coupled to the data channel and is configured to control a time point that the data channel outputs the second display data according to similarity between the first display data and the second display data.
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公开(公告)号：US20210027721A1
公开(公告)日：2021-01-28
申请号：US16522660
申请日：2019-07-26
Applicant: Novatek Microelectronics Corp.
Inventor： Cheng-Tsu Hsieh
IPC: G09G3/34
Abstract: A display apparatus includes at least one source driver and a display panel having a display area and a non-display area, in which the display area includes a first array of transistors and the non-display area includes a second array of transistors. The at least one source driver is coupled to a first side of the display area and is configured to drive the first array of transistors. The second array of transistors are coupled to a second side of the display area of the display panel and is configured to perform a first pre-charge operation on a plurality of odd-number channels of the display panel and perform a second pre-charge operation on a plurality of even-numbered channels of the display panel through the second side of the display area. The first side of the display area is opposite to the second side of the display area.
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公开(公告)号：US11120772B1
公开(公告)日：2021-09-14
申请号：US16847589
申请日：2020-04-13
Applicant: NOVATEK Microelectronics Corp.
Inventor： Cheng-Tsu Hsieh , Sou-Chieh Chang , Ying-Hsiang Wang
Abstract: A source driving circuit, a display apparatus and an operation method are provided. The source driving circuit includes a reference voltage generating circuit, a plurality of compensation circuits, a gamma voltage generating circuit and a digital to analog converter. The reference voltage generating circuit is configured to generate a plurality of gamma reference voltages. The plurality of compensation circuits are coupled to the reference voltage generating circuit and configured to generate a plurality of compensated gamma reference voltages according to the plurality of gamma reference voltages and a voltage associated with a common voltage. The gamma voltage generating circuit is configured to generate a plurality of gamma voltages according to the plurality of compensated gamma reference voltages. The digital to analog converter is configured to generate a plurality of data driving voltages corresponding to image data according to the plurality of gamma voltages.
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公开(公告)号：US20200286438A1
公开(公告)日：2020-09-10
申请号：US16290967
申请日：2019-03-04
Applicant: Novatek Microelectronics Corp.
Inventor： Cheng-Tsu Hsieh , Ching-Wen Hou
Abstract: A source driver including a first output buffer, a second output buffer and a plurality of switches is provided. The first output buffer is connected to an output line. The second output buffer is connected to another output line. During a charge-sharing period, the first switch and the fourth switch are not conducted, and the second switch, the third switch, the fifth switch and the sixth switch are conducted. A first node, a second node and the output lines are connected together to perform a charge-sharing operation during the charge-sharing period. Based on the circuit structure of the source driver, the efficiency of the charge-sharing operation is improved and the chip area of the source driver is reduced.
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公开(公告)号：US20230024342A1
公开(公告)日：2023-01-26
申请号：US17958449
申请日：2022-10-03
Applicant: Novatek Microelectronics Corp.
Inventor： Cheng-Tsu Hsieh
IPC: G09G3/20
Abstract: The disclosure provides a source driving circuit adapted to a display panel. The source driving circuit includes a data channel and a control circuit. The data channel is configured to be coupled to a data line of the display panel and drive the data line of the display panel sequentially according to first display data and second display data. The first display data corresponds to a first scan line of the display panel, and the second display data corresponds to a second scan line of the display panel next to the first scan line of the display panel. The control circuit is coupled to the data channel and is configured to control a time point that the data channel outputs the second display data according to similarity between the first display data and the second display data.
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Patent Agency Ranking
公开(公告)号：US10964280B2
公开(公告)日：2021-03-30
申请号：US16290967
申请日：2019-03-04
Applicant: Novatek Microelectronics Corp.
Inventor： Cheng-Tsu Hsieh , Ching-Wen Hou
Abstract: A source driver including a first output buffer, a second output buffer and a plurality of switches is provided. The first output buffer is connected to an output line. The second output buffer is connected to another output line. During a charge-sharing period, the first switch and the fourth switch are not conducted, and the second switch, the third switch, the fifth switch and the sixth switch are conducted. A first node, a second node and the output lines are connected together to perform a charge-sharing operation during the charge-sharing period. Based on the circuit structure of the source driver, the efficiency of the charge-sharing operation is improved and the chip area of the source driver is reduced.
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公开(公告)号：US10796665B1
公开(公告)日：2020-10-06
申请号：US16406006
申请日：2019-05-07
Applicant: Novatek Microelectronics Corp.
Inventor： Cheng-Tsu Hsieh , Shang-Heng Shih
Abstract: A control apparatus for driving a display panel and a method thereof are provided. The control apparatus includes an image flickering detector and a chopper selector. The image flickering detector detects whether a present image pattern displayed on the display panel is flickering or not. The chopper selector selects a first chopper mode from a plurality of chopper modes for adjusting gamma voltages of a display image data, and detects whether the present image displayed on the display panel according to the display image data is flickering or not by the image flickering detector. The chopper selector selects a second chopper mode to adjust the gamma voltages of the display image data in response to the present image being flickering. The first chopper mode is different from the second chopper mode.
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公开(公告)号：US11468821B2
公开(公告)日：2022-10-11
申请号：US16995764
申请日：2020-08-17
Applicant: Novatek Microelectronics Corp.
Inventor： Cheng-Tsu Hsieh
IPC: G09G3/20
Abstract: The disclosure provides a source driving circuit adapted to a display panel. The source driving circuit includes a data channel and a control circuit. The data channel is configured to be coupled to a data line of the display panel and drive the data line of the display panel sequentially according to first display data and second display data. The first display data corresponds to a first scan line of the display panel, and the second display data corresponds to a second scan line of the display panel next to the first scan line of the display panel. The control circuit is coupled to the data channel and is configured to control a time point that the data channel outputs the second display data according to similarity between the first display data and the second display data.
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公开(公告)号：US11176861B2
公开(公告)日：2021-11-16
申请号：US17088600
申请日：2020-11-04
Applicant: NOVATEK Microelectronics Corp.
Inventor： Syang-Yun Tzeng , Cheng-Tsu Hsieh , Ching-Wen Hou , Ying-Hsiang Wang , Ping Chen
IPC: G09G3/00
Abstract: An electronic device includes a substrate and a display driver chip bonded on the substrate. The display driver chip includes a plurality of operational amplifiers, and each of the operational amplifiers has a first stage and a second stage. The first stage includes a first power input terminal. The second stage includes a first power input terminal and an output terminal for outputting an output voltage. The first power input terminal of the first stage is connected to a first metal trace of the substrate, and the first power input terminal of the second stage is connected to a second metal trace of the substrate. The first power input terminal of the first stage and the first power input terminal of the second stage are both provided with a first voltage level.
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公开(公告)号：US10950186B2
公开(公告)日：2021-03-16
申请号：US16522660
申请日：2019-07-26
Applicant: Novatek Microelectronics Corp.
Inventor： Cheng-Tsu Hsieh
Abstract: A display apparatus includes at least one source driver and a display panel having a display area and a non-display area, in which the display area includes a first array of transistors and the non-display area includes a second array of transistors. The at least one source driver is coupled to a first side of the display area and is configured to drive the first array of transistors. The second array of transistors are coupled to a second side of the display area of the display panel and is configured to perform a first pre-charge operation on a plurality of odd-number channels of the display panel and perform a second pre-charge operation on a plurality of even-numbered channels of the display panel through the second side of the display area. The first side of the display area is opposite to the second side of the display area.
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