公开(公告)号：US11749159B2

公开(公告)日：2023-09-05

申请号：US17863313

申请日：2022-07-12

Applicant: LX Semicon Co., Ltd.

Inventor： Jin Su Byeon ,  Cheol Ho Lee ,  Yoon Soo Shin

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2310/0267 ,  G09G2310/0291 ,  G09G2330/021

Abstract: Provided are a gate driver circuit used in a display device and a method for driving the same. Charge sharing is adaptively achieved according to the phase of a clock signal outputted by the output ends of buffers in the gate driver circuit, so that power consumed when a gate line is driven can be reduced.

公开(公告)号：US20230251742A1

公开(公告)日：2023-08-10

申请号：US18134010

申请日：2023-04-12

Applicant: LX SEMICON CO., LTD.

Inventor： Sun Young PARK ,  Hong Kyun JUNG ,  Sung Chun KIM

IPC: G06F3/041

CPC classification number: G06F3/0418 ,  G06F3/04164 ,  G06F3/04166 ,  G06F3/0412 ,  G09G3/3611 ,  G09G2310/08

Abstract: A touch sensing device for preventing occurrence of electromagnetic interference (EMI) due to a clock includes a touch controller configured to operate in a write mode during a display period and operate in a read request mode or a read operation mode during a touch sensing period, and a touch driver configured to receive touch sensing data from a touch sensor during the touch sensing period and transmit the touch sensing data to the touch controller through a first bus and a second bus. The first bus is used for clock transmission in the write mode and the read request mode and is used for data transmission in the read operation mode. The second bus is used for data transmission in the write mode, the read request mode, and the read operation mode.

公开(公告)号：US11721264B2

公开(公告)日：2023-08-08

申请号：US17962595

申请日：2022-10-10

Applicant: LX SEMICON CO., LTD.

Inventor： Do Hoon Lee ,  Ji Won Lee ,  Hyun Kyu Jeon

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G3/2007 ,  G09G2300/026 ,  G09G2330/027 ,  G09G2360/16

Abstract: A display driving device configured to drive a plurality of display panels includes an external illuminance calculation unit configured to calculate external illuminance using measured illuminance input from an illuminance measurement device, and accumulate and store the external illuminance according to a time zone, a weight determination unit configured to determine a weight according to the calculated external illuminance, an image processing unit configured to apply the weight to first output data to generate second output data, and a target panel determination unit configured to determine target panels that are display panels for displaying an image, among the plurality of display panels, using the second output data.

公开(公告)号：US11720217B2

公开(公告)日：2023-08-08

申请号：US17518131

申请日：2021-11-03

Applicant: LX Semicon Co., Ltd.

Inventor： Jun Tak Jeon ,  Kyung Hwan Kim

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/0446 ,  G06F3/0412 ,  G06F3/0416

Abstract: The present embodiment relates to a touch sensing circuit configured to control a driving signal transferred to a power circuit and, more specifically, to a touch sensing circuit and a method for operating a touch sensing circuit, the touch sensing circuit including: a readout circuit configured to output a driving signal for driving a touch electrode included in a panel; a power circuit configured to supply driving power to the readout circuit; and a touch control circuit communicating with the power circuit to control the amplitude of a driving signal.

公开(公告)号：US11720204B2

公开(公告)日：2023-08-08

申请号：US17453022

申请日：2021-11-01

Applicant: LX SEMICON CO., LTD.

Inventor： Young Hoon Bin ,  Jae Woo Jeon

IPC: G06F3/041 ,  G09G5/12 ,  G09G5/18

CPC classification number: G06F3/04166 ,  G06F3/0412 ,  G09G5/12 ,  G09G5/18

Abstract: A timing controller according to one aspect of the present disclosure that is capable of operating in a low-power mode for a touch sensor driving period includes a receiver which receives a timing synchronization signal and video image data from an external source, a data processor which generates a gate control signal and a data control signal on the basis of the timing synchronization signal and arranges the video image data as pixel data for a display panel, and a transmitter which operates in a normal mode to output the pixel data, the gate control signal, and the data control signal for a display driving period and operates in a low-power mode for at least some time of a touch sensor driving period.

公开(公告)号：US20230216406A1

公开(公告)日：2023-07-06

申请号：US18147885

申请日：2022-12-29

Applicant: LX SEMICON CO., LTD.

Inventor： Xuan Dien DO ,  Yoon Soo SHIN ,  Chang Jin JEONG ,  Jin Su BYEON

IPC: H02M3/158 ,  H02M1/00 ,  G09G3/36

CPC classification number: H02M3/158 ,  H02M1/0009 ,  H02M1/0032 ,  G09G3/3696 ,  G09G2330/021

Abstract: According to one embodiment of the present disclosure, there is provided a DC-DC converter including a slope compensation circuit configured to generate a sawtooth-shaped compensation ramp wave to output a slope voltage, a current sensing circuit configured to receive and convert a sensing current to output the converted current, and an adder configured to receive the slope voltage and the sensing current, wherein the adder includes a sensing resistor and a sensing switch, one end of the sensing resistor is connected to the current sensing circuit and the other end of the sensing resistor is connected to the sensing switch and the slope compensation circuit, and one end of the sensing switch is connected to the sensing resistor and the slope compensation circuit and the other end of the sensing switch is connected to the ground.

公开(公告)号：US20230215325A1

公开(公告)日：2023-07-06

申请号：US18084298

申请日：2022-12-19

Applicant: LX Semicon Co., Ltd.

Inventor： Gi Baek CHOI ,  Jong Hwi PARK ,  Yong Jung KWON ,  Jung Bae YUN

IPC: G09G3/20

CPC classification number: G09G3/2007 ,  G09G2310/0297 ,  G09G2310/027 ,  G09G2310/08 ,  G09G2320/02

Abstract: 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：US11676519B2

公开(公告)日：2023-06-13

申请号：US17857501

申请日：2022-07-05

Applicant: LX Semicon Co., Ltd.

Inventor： Hee Yoon Jung ,  Hyung Sub Kim ,  Jung Hyun Tark

IPC: G09G3/00 ,  G06F3/041 ,  G09G3/3275 ,  G09G3/36

CPC classification number: G09G3/006 ,  G06F3/04182 ,  G09G3/3275 ,  G09G3/3685 ,  G09G2330/12 ,  G09G2354/00 ,  G09G2370/14

Abstract: The present embodiment provides a technology for sensing a common mode voltage in the positive line and negative line of a transmission line for image data and determining whether noise occurs in the image data transmitted through the transmission line by comparing the common mode voltage with a set reference voltage.

公开(公告)号：US20230178024A1

公开(公告)日：2023-06-08

申请号：US17992474

申请日：2022-11-22

Applicant: LX Semicon Co., Ltd.

Inventor： Jong Min LEE ,  Kyeong Rok LEE ,  Sang Suk KIM ,  Jang Su KIM

IPC: G09G3/3241

CPC classification number: G09G3/3241 ,  G09G2310/027 ,  G09G2320/0233

Abstract: A current supply circuit according to the present disclosure may include a voltage/current converter configured to convert, into a data current, a data voltage received from a data driving circuit and a first current mirror circuit configured to mirror the data current so that a light-emitting diode (LED) current flows into an LED array. The data current may be adjusted based on a greyscale value of the LED array.

公开(公告)号：US20230177992A1

公开(公告)日：2023-06-08

申请号：US17984992

申请日：2022-11-10

Applicant: LX Semicon Co., Ltd.

Inventor： Seok Hoo KIM

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2310/08 ,  G09G2310/0291 ,  G09G2330/021

Abstract: Disclosed are a timing controller and driver which are improved to have a function of compensating a source signal to be provided to a display panel, and a display system including the timing controller and the driver.