公开(公告)号：US20240185814A1

公开(公告)日：2024-06-06

申请号：US18526004

申请日：2023-12-01

申请人： LX SEMICON CO., LTD.

发明人： Woong Jin OH ,  Yong Min KIM ,  Kwang Jun LEE

IPC分类号： G09G3/36 ,  G09G3/3275

CPC分类号： G09G3/3685 ,  G09G3/3275 ,  G09G2310/0291 ,  G09G2310/0297 ,  G09G2370/10

摘要： Disclosed is a source driver IC including a first latch circuit configured to sample image data, a second latch circuit configured to latch and output the sampled image data at a rising edge of a latch enable signal, a latch enable signal output control circuit configured to output the latch enable signal at a first timing or second timing according to a timing setting signal, a digital-to-analog converter configured to convert the image data into an analog data voltage, an output buffer circuit configured to amplify and output the data voltage in synchronization with the latch enable signal, and a Mux circuit configured to be turned on during a period of a low level of a source output enable signal to output the data voltage to each channel.

公开(公告)号：US12002402B2

公开(公告)日：2024-06-04

申请号：US18084298

申请日：2022-12-19

申请人： LX Semicon Co., Ltd.

发明人： Gi Baek Choi ,  Jong Hwi Park ,  Yong Jung Kwon ,  Jung Bae Yun

IPC分类号： G09G3/20

CPC分类号： G09G3/2007 ,  G09G2310/027 ,  G09G2310/0297 ,  G09G2310/08 ,  G09G2320/02

摘要： An embodiment provides a latch circuit which outputs, to a digital analog converter (DAC), a digital signal including grayscale data, the latch circuit including a first latch configured to store the digital signal and a second latch configured to output the digital signal by controlling first timing at which a level of a first signal included in the digital signal becomes an enable level, based on a center grayscale. The grayscale data includes first grayscale data and second grayscale data.

公开(公告)号：US20240178848A1

公开(公告)日：2024-05-30

申请号：US18518733

申请日：2023-11-24

申请人： LX SEMICON CO., LTD.

发明人： Jae Hwan LEE ,  Yoon Hoe KIM ,  Ji Hye KIM ,  Seung Chan JUNG ,  Hyun Soo CHUNG

IPC分类号： H03L7/083 ,  H03L7/093 ,  H03L7/107

CPC分类号： H03L7/083 ,  H03L7/093 ,  H03L7/1077

摘要： The present disclosure relates to a multi-chip clock synchronization device and a method capable of reducing an operating frequency and power consumption when a plurality of chips share clocks for multi-chip clock synchronization, which may include a reference clock supply unit connected to a plurality of chips and supplying a reference clock of a first frequency to each chip and a target clock generation unit generating a target clock of a second frequency based on the reference clock of the first frequency, wherein the reference clock supply unit may generate the reference clock of the first frequency which is N times lower than the second frequency of the target clock to supply the generated reference clock to each chip, and the target clock generation unit may multiply the first frequency of the reference clock by N times when the reference clock of the first frequency is input to generate the target clock of the second frequency.

公开(公告)号：US20240144854A1

公开(公告)日：2024-05-02

申请号：US18499967

申请日：2023-11-01

申请人： LX SEMICON CO., LTD.

发明人： Jung Hyun TARK ,  Hyung Sub KIM ,  Su Jeong NA

IPC分类号： G09G3/20

CPC分类号： G09G3/2092 ,  G09G2310/0297 ,  G09G2330/021

摘要： Power management device for driving a display panel is disclosed. In order to achieve the above object, a power management device of operating a display panel may include a first buffer circuit configured to generate and output a first gamma reference voltage in a first section of a frame and generate and output a first touch driving voltage in a second section of the frame; and a second buffer circuit configured to generate and output a second gamma reference voltage in the first section and generate and output a second touch driving voltage in the second section.

公开(公告)号：US11972082B2

公开(公告)日：2024-04-30

申请号：US18089357

申请日：2022-12-27

申请人： LX Semicon Co., Ltd.

发明人： Young Ju Park ,  Young Eun Lee

IPC分类号： G06F3/044 ,  G02F1/1333 ,  G06F3/041

CPC分类号： G06F3/0446 ,  G02F1/13338 ,  G06F3/0412 ,  G06F3/04162

摘要： The present disclosure relates to a technology for sensing a touch input by differently adjusting a ratio of a threshold for each touch location, and can provide a technology for incorporating a difference between touch sensing sensitivity at the center of a touch area and touch sensing sensitivity in the periphery of the touch area by setting a threshold by incorporating a ratio of touch intensity at an offset location and touch intensity at an adjacent location.

公开(公告)号：US20240128930A1

公开(公告)日：2024-04-18

申请号：US18486715

申请日：2023-10-13

申请人： LX SEMICON CO., LTD.

发明人： Yong Sung AHN ,  Ji Won KIM ,  Hyo Joong KIM ,  Kyung Min SHIN ,  Kyu Tae LEE ,  Ha Rim CHOI

IPC分类号： H03F1/02 ,  G09G3/20 ,  G09G3/3233 ,  G09G3/3275 ,  H03F3/45 ,  H03F3/68

CPC分类号： H03F1/02 ,  G09G3/2007 ,  G09G3/3233 ,  G09G3/3275 ,  H03F3/45076 ,  H03F3/68 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0291 ,  G09G2320/0233 ,  G09G2320/0673 ,  H03F2203/45044 ,  H03F2203/45214 ,  H03F2203/45296

摘要： The present disclosure relates to an offset elimination operation of an internal operational amplifier of a data driving circuit and relates to a technique that applies different offset elimination methods for each position of an operational amplifier.

公开(公告)号：US11961445B2

公开(公告)日：2024-04-16

申请号：US17537050

申请日：2021-11-29

申请人： LX Semicon Co., Ltd.

发明人： Jun Young Park ,  Do Yeon Kim ,  Min Ji Lee ,  Gang Won Lee ,  Young Kyun Kim ,  Ji Won Lee

IPC分类号： G09G3/20 ,  G09G5/10

CPC分类号： G09G3/2074 ,  G09G5/10 ,  G09G2320/0276

摘要： A data processing circuit according to an embodiment may include a reception circuit configured to receive image data including grayscale values associated with pixels disposed in a display panel. The data processing circuit may include a compensation circuit configured to calculate a final compensation value by multiplying a representative compensation value of each area and a global gain, and to produce converted image data. The data processing circuit may include a memory storing a representative compensation value associated with a grayscale value of each area of the display panel, and may include a transmission circuit configured to transmit the converted image data to a data driving circuit.

公开(公告)号：US11960682B2

公开(公告)日：2024-04-16

申请号：US18075255

申请日：2022-12-05

申请人： LX Semicon Co., Ltd.

发明人： Chan Hee Han

IPC分类号： G06F3/041

CPC分类号： G06F3/04186

摘要： The present disclosure relates to a touch sensing device and a coordinate correction method, and more particularly, to a technique of determining a degree, to which a drawn line is curved (a straight line/a curved line), according to gradient values of straight lines that can be generated by touch coordinates and adaptively correcting the coordinates.

公开(公告)号：US20240079418A1

公开(公告)日：2024-03-07

申请号：US18461188

申请日：2023-09-05

申请人： LX SEMICON CO., LTD.

发明人： Min Ho JEON ,  Dam HA

IPC分类号： H01L27/12

CPC分类号： H01L27/1244

摘要： Disclosed herein is a chip on film package including a base film, output wiring disposed on the base film and extending along a first direction, an insulation layer overlapping at least a portion of the output wiring, an output pad portion defined as a region in which the output wiring is exposed without the insulation layer, a semiconductor chip mounted on the base film and electrically connected to the output wiring, and a protective layer disposed between the semiconductor chip and the output pad portion with respect to the first direction.

公开(公告)号：US20240072706A1

公开(公告)日：2024-02-29

申请号：US18240429

申请日：2023-08-31

申请人： LX SEMICON CO., LTD.

发明人： Jang Hyun YOON

IPC分类号： H02P23/14 ,  H02P27/08

CPC分类号： H02P23/14 ,  H02P27/08

摘要： The present disclosure relates to a motor driver capable of simply estimating an initial position of a rotor, and the motor driver according to one embodiment may include a gate driver for sequentially driving three-phase coils of a motor in first to sixth operation modes through an inverter for driving the three-phase coils and an initial position detector for detecting a maximum peak value among first to sixth currents by sensing the first to sixth currents flowing through two-phase coils among the three-phase coils through the inverter in each of the first to sixth operation modes and determine a starting position of a rotor of the motor based on the detected maximum peak value.