公开(公告)号：US12001631B2

公开(公告)日：2024-06-04

申请号：US17959031

申请日：2022-10-03

申请人： LX Semicon Co., Ltd.

发明人： Ho Sup Choi

IPC分类号： G06F3/041 ,  G06F3/044

CPC分类号： G06F3/04166 ,  G06F3/044

摘要： Embodiments relate to a technology of sensing a position of a pen in a touch panel in which a plurality of touch electrodes are disposed. In order to reduce the noise of data when sensing the position of a pen, a method of calculating a position by using data of all data slots for a region preset on the basis of a previous position of the pen.

公开(公告)号：US20240178808A1

公开(公告)日：2024-05-30

申请号：US18518836

申请日：2023-11-24

申请人： LX SEMICON CO., LTD.

发明人： Harim CHOI ,  Jiwon KIM ,  Hyo Joong KIM ,  Kyung Min SHIN ,  Yongsung AHN

IPC分类号： H03F3/45

CPC分类号： H03F3/45475 ,  H03F2200/129 ,  H03F2200/375

摘要： The present invention provides an offset free differential amplifier and an offset free method of a differential amplifier capable of removing an offset of a differential amplifier by selectively using at least one of an auto zero method and a chopping method. The offset free differential amplifier includes a differential amplifier; a chopping switch unit that is connected to two input terminals and one output terminal of the differential amplifier in response to a chopping control signal and removes an average offset of the differential amplifier; and an auto-zero switch unit that is connected to the differential amplifier and the chopping switch unit in response to an auto-zero switch control signal and removes an absolute offset of the differential amplifier.

公开(公告)号：US11996029B2

公开(公告)日：2024-05-28

申请号：US17857692

申请日：2022-07-05

申请人： LX Semicon Co., Ltd.

发明人： Seong Sik Yoon ,  Hong Kyu Choi

IPC分类号： G09G3/20 ,  G06F3/041

CPC分类号： G09G3/2092 ,  G06F3/0412 ,  G09G2330/021 ,  G09G2330/026 ,  G09G2330/027

摘要： The present disclosure relates to a technology for supplying power to a display device and provides a device which checks a control value for each mode stored in a memory according to a mode indication signal in a simple form received from an external device and controls operation states of power converting circuits in each mode according to the control value for each mode.

公开(公告)号：US20240153432A1

公开(公告)日：2024-05-09

申请号：US18500530

申请日：2023-11-02

申请人： LX SEMICON CO., LTD.

发明人： Won KIM ,  Se Hong OH ,  Beom Rak CHOI

IPC分类号： G09G3/20

CPC分类号： G09G3/2092 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2330/021

摘要： An embodiment provides a data driving device that varies a bias current of an amplifier to prevent noise generated when a digital-to-analog conversion circuit converts a digital signal for a grayscale value into an analog signal from being propagated to a pixel.

公开(公告)号：US20240152232A1

公开(公告)日：2024-05-09

申请号：US18503029

申请日：2023-11-06

申请人： LX SEMICON CO., LTD.

发明人： Jeong Kwon NAM ,  Yeon Ju YU ,  Jin Yoon JANG

IPC分类号： G06F3/041

CPC分类号： G06F3/04166 ,  G06F3/0412 ,  G06F3/044

摘要： One embodiment provides a touch driving device for driving a touch panel that generates an auxiliary signal using a voltage source and a resistor, and generates a touch driving signal by combining the auxiliary signal and PWM driving pulses. Such touch driving device may change the voltage level of the voltage source or change the resistance value of the resistor to compensate for the characteristic deviation between channel circuits.

公开(公告)号：US11977704B2

公开(公告)日：2024-05-07

申请号：US17954972

申请日：2022-09-28

申请人： LX Semicon Co., Ltd.

发明人： Se Jeong Park ,  Yeong Il Jeon

IPC分类号： G06F3/041 ,  B60K35/00 ,  G06F3/044 ,  G06F3/04886

CPC分类号： G06F3/041661 ,  B60K35/00 ,  G06F3/0418 ,  G06F3/044 ,  B60K2370/1434 ,  B60K2370/152 ,  B60K2370/166 ,  G06F3/04886

摘要： The present disclosure relates to a touch driving device, a display device including the same, and a touch management device, and more particularly, to a touch driving device which includes a panel divided into one or more separate areas and differently sets the touch sensitivities for the respective areas in order to prevent an error caused by a user's mistake, and a display device including the same and a touch management method.

公开(公告)号：US20240146263A1

公开(公告)日：2024-05-02

申请号：US18496025

申请日：2023-10-27

申请人： LX SEMICON CO., LTD.

发明人： Sang Duk YU ,  Ho Jong PARK ,  Tae Jun AHN ,  Sung Dae YEO

IPC分类号： H03F3/45 ,  G09G3/3291 ,  G09G3/36

CPC分类号： H03F3/45076 ,  G09G3/3291 ,  G09G3/3685 ,  G09G2310/027 ,  G09G2310/0289 ,  G09G2310/0291 ,  G09G2310/06 ,  G09G2330/021

摘要： A differential amplifier according to an embodiment can be provided in a data driving device for driving pixels of a display panel. The differential amplifier can improve the slew rate of the differential amplifier by supplying dynamic current to an input circuit stage and/or a current mirror circuit stage of the differential amplifier through a boosting circuit stage.

公开(公告)号：US20240105126A1

公开(公告)日：2024-03-28

申请号：US18471754

申请日：2023-09-21

申请人： LX SEMICON CO., LTD.

发明人： Won Youn KIM

IPC分类号： G09G3/3283 ,  G09G3/3233

CPC分类号： G09G3/3283 ,  G09G3/3233 ,  G09G2300/0828 ,  G09G2300/0852 ,  G09G2310/0297 ,  G09G2330/10

摘要： In the embodiment, the location of the defective pixel can be determined by measuring the operating current of each LED of the pixel, and the sub-LED can be driven in response to the location information of the defective pixel, thereby implementing normal LED operation even in a pixel defect situation.

公开(公告)号：US20240105099A1

公开(公告)日：2024-03-28

申请号：US18512345

申请日：2023-11-17

申请人： LX SEMICON CO., LTD.

发明人： Da Sol WON ,  Kwang Myung KANG ,  Yong Min KIM ,  Dong Keun SONG ,  Jung Min CHOI ,  Seon Ho HONG

IPC分类号： G09G3/20 ,  G09G3/00

CPC分类号： G09G3/2092 ,  G09G3/007 ,  G09G2310/027 ,  G09G2310/0291

摘要： The embodiment relates to a data driving device for driving pixels of a display panel. In the data driving device, two adjacent DACs can have different gate loads for the same gray level value so that the fluctuation of the gate load according to the gray level value is reduced.

公开(公告)号：US20240105087A1

公开(公告)日：2024-03-28

申请号：US18471747

申请日：2023-09-21

申请人： LX SEMICON CO., LTD.

发明人： Seok Jin JEONG ,  Bong Sin KWAK ,  Man Jung KIM ,  Myung Yu KIM ,  Kwang Hee YOON

IPC分类号： G09G3/00 ,  G06F11/10

CPC分类号： G09G3/006 ,  G06F11/1004 ,  G09G2380/10

摘要： The present disclosure provides a display device for inspecting image data that may include a data processing device configured to generate first cyclic redundancy check (CRC) data for a partial area among areas of image data included in a first frame to transmit the image data of the first frame and the first CRC data and a data driving device configured to receive the image data of the first frame and the first CRC data from the data processing device to generate second CRC data for a partial area among areas of the image data included in the first frame on the basis of the image data of the first frame and to compare the first CRC data with the second CRC data to determine whether there is an error in the partial area among areas of the image data included in the first frame.