公开(公告)号：US20230008655A1

公开(公告)日：2023-01-12

申请号：US17858930

申请日：2022-07-06

申请人： LX Semicon Co., Ltd.

发明人： Seong Sik YOON ,  Seong Wha HONG ,  Ju Hyoung LEE

IPC分类号： G06F3/041 ,  G06F3/0354 ,  G06F1/3231

摘要： The present embodiment relates to a touch power management circuit and a touch driving system including the same, and more particularly, to a touch power management circuit that prevents unnecessary power consumption during a pen touch driving period in order to reduce power consumption of a display device, and a touch driving system including the same.

公开(公告)号：US20230005411A1

公开(公告)日：2023-01-05

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

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：US11526237B1

公开(公告)日：2022-12-13

申请号：US17713970

申请日：2022-04-05

申请人： LX Semicon Co., Ltd.

发明人： Yang Been Lim

IPC分类号： G06F3/041 ,  G06F3/044

摘要： A touch sensing apparatus includes a coordinate calculator configured to count a current number of touches and calculate an estimated number of touches, by the unit of touch group, by using touch data including touch coordinates of a plurality of touch electrodes, and detect a discontinuous touch corresponding to a touch group in which the current number of touches and the estimated number of touches are not the same; and a touch data generator configured to generate the touch data including corrected coordinate data.

公开(公告)号：US20220383805A1

公开(公告)日：2022-12-01

申请号：US17824573

申请日：2022-05-25

申请人： LX Semicon Co., Ltd.

发明人： Ji Won LEE ,  Ji Hong YUK ,  Sa Ra YOON

IPC分类号： G09G3/32 ,  G09G3/20

摘要： The present embodiment provides an image data processing apparatus, including a memory storing previous frame image data and an image data compensating circuit configured to generate overdriving image data for current frame image data by comparing the previous frame image data and the current frame image data, wherein the degree of an overdriving is adjusted based on a display brightness value (DBV), which is used for adjusting the brightness of a display panel.

公开(公告)号：US20220365654A1

公开(公告)日：2022-11-17

申请号：US17738659

申请日：2022-05-06

申请人： LX Semicon Co., Ltd.

发明人： Kyu Tae LEE ,  Mun Seok KANG ,  Jae Hwan LEE ,  Jeong Kwon NAM ,  Hyun Soo CHUNG ,  Jin Yoon JANG ,  Hee Ra YUN

IPC分类号： G06F3/041

摘要： The present embodiment may provide a touch sensing circuit including: an analog signal processing circuit including one or more adjustable filters configured to receive a touch sensing signal from a touch electrode of a panel and to transmit some of a frequency region of the touch sensing signal; and a touch control circuit configured to determine a change in capacitance of the touch electrode attributable to an object approaching the panel and to transmit a controlling signal to control the adjustable filters of the analog signal processing circuit. The adjustable filter of the present embodiment may include a variable resistor or a variable capacitor. A resistance value or capacitance value of the adjustable filter may be changed in response to the controlling signal, thus changing a frequency pass band of the touch sensing signal.

公开(公告)号：US20220357831A1

公开(公告)日：2022-11-10

申请号：US17725364

申请日：2022-04-20

申请人： LX Semicon Co., Ltd.

发明人： Ji Ho KIM ,  Jun Tak JEON ,  Kyung Hwan KIM ,  Sung Chun KIM

IPC分类号： G06F3/041 ,  G09G3/20

摘要： The present disclosure relates to a microcontroller, a readout integrated circuit and a method of driving a circuit, and more particularly, to a microcontroller, a readout integrated circuit and a method of driving a circuit to transmit command signals by using a pair of lines, through which signals are transmitted from the microcontroller which is a master circuit to the readout integrated circuit which is a slave circuit, as two single-ended signal transmission lines and to control power of the readout integrated circuit which is a slave circuit.

公开(公告)号：US20220198982A1

公开(公告)日：2022-06-23

申请号：US17555328

申请日：2021-12-17

申请人： LX Semicon Co., Ltd.

发明人： Jung Min Choi

IPC分类号： G09G3/20

摘要： The present disclosure relates to a data driving device and a display device including the same, and more particularly, to a data driving device and a display device including the same, capable of improving the slew rate and the display speed of the display device by overdriving a pixel of a display panel with a power voltage of the data driving device.

公开(公告)号：US20220197468A1

公开(公告)日：2022-06-23

申请号：US17552270

申请日：2021-12-15

申请人： LX Semicon Co., Ltd.

发明人： Kyu Tae Lee ,  Mun Seok Kang ,  Jae Hwan Lee ,  Jeong Kwon Nam ,  Hyun Soo Chung ,  Jin Yoon Jang ,  Hee Ra Yun ,  Yeon Ju Yu

IPC分类号： G06F3/041 ,  G06F3/044

摘要： The present disclosure provides a touch sensing circuit comprising an analog signal processing circuit configured to receive a plurality of sensing signals having different frequencies from touch electrodes; and a digital signal processing circuit configured to receive output data of the analog signal processing circuit and perform a discrete Fourier transform. In addition, the present disclosure provides a touch sensing circuit comprising the digital signal processing circuit of the touch sensing circuit that separates the plurality of sensing signals through the discrete Fourier transform and allowing a simultaneous sensing of a finger touch and a stylus pen touch.

公开(公告)号：US11367375B2

公开(公告)日：2022-06-21

申请号：US17511457

申请日：2021-10-26

申请人： LX Semicon Co., Ltd.

发明人： Jae Uk Jeon ,  Jung Bae Yun ,  Man Jeong Ko ,  Byung Seob Song

IPC分类号： G09G3/20

摘要： The present embodiment relates to a data processing device and a display device and, more specifically, to data processing device and a display device for selectively applying an image quality improvement function in consideration of the characteristics depending on the positions on a display panel.

公开(公告)号：US20220189383A1

公开(公告)日：2022-06-16

申请号：US17545981

申请日：2021-12-08

申请人： LX Semicon Co., Ltd.

发明人： Jin Ho Choi ,  Jang Su Kim ,  Ji Hwan Kim

IPC分类号： G09G3/32 ,  H05B45/325

摘要： An embodiment relates to a technique for driving an LED display. In a method of controlling grayscale of pixels dividedly by N subframes (N is a natural number of 2 or greater), a pulse width modulation (PWM) control value of each subframe may be calculated by a precalculator disposed at a front end of latches, thereby simplifying a circuit.