公开(公告)号：US20220209784A1

公开(公告)日：2022-06-30

申请号：US17696252

申请日：2022-03-16

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sanho BYUN ,  Minsung KIM ,  Jungmoon KIM

IPC: H03M1/44 ,  G06F3/044 ,  H03M1/36

Abstract: A touch processing circuit includes: a front-end circuit including an amplifier, a first capacitor, a second capacitor, a third capacitor, and a plurality of switches each having two ends that are selectively connected each other, the front-end circuit being configured to process an input signal varying according to a touch; and a controller controlling the plurality of switches so that the front-end circuit is configured as a first circuit that accumulates deviation of the input signal between a first phase and a second phase during an integration period and a second circuit that converts the accumulated deviation into a digital signal during a conversion period.

公开(公告)号：US20220334604A1

公开(公告)日：2022-10-20

申请号：US17721541

申请日：2022-04-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jungmoon KIM ,  Jeongpyo KIM ,  Insuk KIM ,  Yeonjeong LEE

IPC: G05F1/575

Abstract: An integrated circuit includes: a power supply circuit configured to generate a supply voltage from at least one of first and second power source voltages; and a system load configured to operate by receiving the supply voltage through an output node of the power supply circuit, wherein the power supply circuit includes: a first low drop-output (LDO) regulator configured to generate, from the first power source voltage, a first load current flowing to the system load through the output node; and a second LDO regulator configured to selectively generate a second load current flowing to the system load through the output node, from the second power source voltage based on a difference between voltages of internal nodes of the first LDO regulator.

公开(公告)号：US20210375209A1

公开(公告)日：2021-12-02

申请号：US17118728

申请日：2020-12-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Byunghun HAN ,  Insuk KIM ,  Jungmoon KIM ,  Sungjin PARK ,  Seunggun HAM

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3275

Abstract: An OLED display system includes a display panel, a driving circuit, a voltage generator and a power management application circuit (PMAC). The driving circuit provides scan signals to the display panel. The voltage generator generates a negative voltage based on a first driving voltage having a positive level and a second driving voltage having a negative level and provides the negative voltage to the driving circuit. The PMAC includes a power management application circuit (PMIC) and an additional circuit distinct from the PMIC and disposed externally to the PMIC. The PMIC applies a high power supply voltage and a low power supply voltage to the display panel and generates the first driving voltage based on a battery voltage. The additional circuit generates the second driving voltage based on the battery voltage. The driving circuit generates at least one of the scan signals based on the negative voltage.

公开(公告)号：US20200372859A1

公开(公告)日：2020-11-26

申请号：US16774319

申请日：2020-01-28

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jungmoon KIM

IPC: G09G3/3225 ,  G09G3/3275

Abstract: A display device includes a display panel including pixels arranged in rows and columns, a gate driver connected to pixels in the rows through first gate lines and second gate lines, a data driver connected to the pixels in the columns through data lines, a sensor connected to the pixels in the columns through sensing lines, a memory to store a look-up table, and a timing controller to control the gate driver and the data driver to adjust the brightnesses of the pixels through the first gate lines and the data lines and to control the gate driver and the sensor to perform a sensing operation of sensing the brightnesses of the pixels through the second gate lines and the sensing lines. The timing controller reads the look-up table from the memory and adjusts a sensing period of the sensing operation based on the look-up table.

公开(公告)号：US20240345611A1

公开(公告)日：2024-10-17

申请号：US18756699

申请日：2024-06-27

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jungmoon KIM ,  Jeongpyo KIM ,  Insuk KIM ,  Yeonjeong LEE

IPC: G05F1/575 ,  G09G3/20

CPC classification number: G05F1/575 ,  G09G3/20 ,  G09G2330/021

Abstract: An integrated circuit includes: a power supply circuit configured to generate a supply voltage from at least one of first and second power source voltages; and a system load configured to operate by receiving the supply voltage through an output node of the power supply circuit, wherein the power supply circuit includes: a first low drop-output (LDO) regulator configured to generate, from the first power source voltage, a first load current flowing to the system load through the output node; and a second LDO regulator configured to selectively generate a second load current flowing to the system load through the output node, from the second power source voltage based on a difference between voltages of internal nodes of the first LDO regulator.

公开(公告)号：US20220335903A1

公开(公告)日：2022-10-20

申请号：US17856182

申请日：2022-07-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： In-Suk KIM ,  Jungmoon KIM ,  Woo-Nyoung LEE

IPC: G09G3/3275 ,  G09G3/20 ,  G09G3/36

Abstract: An electronic device includes a first source group and a second source group, each of which includes a plurality of source channels, and a gamma block that receives first to 2i-th initial voltages (i being an integer of 1 or more), outputs first to 2i-th intermediate voltages by amplifying the first to i-th initial voltages, and outputs first to i-th gamma voltages to the first source group by buffering the first to 2i-th intermediate voltages, and a first buffer block that receives the first to 2i-th intermediate voltages from the gamma block and buffers the first to 2i-th intermediate voltages so as to be output to the second source group, and the gamma block may include a first resistor string including a plurality of resistors connected between nodes from which the first to i-th gamma voltages are output.

公开(公告)号：US20210020083A1

公开(公告)日：2021-01-21

申请号：US16791498

申请日：2020-02-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jungmoon KIM

IPC: G09G3/00 ,  G09G3/3291

Abstract: In a method of sensing a threshold voltage of a driving transistor in a pixel included in a display panel, a first initial level of a data voltage, a level of an initialization voltage and a second initial level of a reference voltage that are used for sensing the threshold voltage of the driving transistor are set. The reference voltage is different from the initialization voltage. The threshold voltage of the driving transistor is sensed by applying the initialization voltage, the data voltage having the first initial level and the reference voltage having the second initial level to the driving transistor. When a predetermined condition is not satisfied by variation in the threshold voltage of the driving transistor, at least one of the first initial level and the second initial level is changed. The threshold voltage of the driving transistor is sensed again based on a result of changing at least one of the first initial level and the second initial level.

公开(公告)号：US20240046881A1

公开(公告)日：2024-02-08

申请号：US18382319

申请日：2023-10-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Byunghun HAN ,  Insuk KIM ,  Jungmoon KIM ,  Sungjin PARK ,  Seunggun HAM

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3275

CPC classification number: G09G3/3258 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2330/021 ,  G09G2300/0819 ,  G09G2310/08 ,  G09G2310/0243 ,  G09G2300/0426 ,  G09G2330/028

Abstract: An OLED display system includes a display panel, a driving circuit, a voltage generator and a power management application circuit (PMAC). The driving circuit provides scan signals to the display panel. The voltage generator generates a negative voltage based on a first driving voltage having a positive level and a second driving voltage having a negative level and provides the negative voltage to the driving circuit. The PMAC includes a power management application circuit (PMIC) and an additional circuit distinct from the PMIC and disposed externally to the PMIC. The PMIC applies a high power supply voltage and a low power supply voltage to the display panel and generates the first driving voltage based on a battery voltage. The additional circuit generates the second driving Voltage based on the battery voltage. The driving circuit generates at least one of the scan signals based on the negative voltage.

公开(公告)号：US20220214794A1

公开(公告)日：2022-07-07

申请号：US17699728

申请日：2022-03-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Minsung KIM ,  Sanho BYUN ,  Roots HUANG ,  Yao Sheng LIANG ,  Jungmoon KIM ,  Dongjo PARK

IPC: G06F3/041 ,  G06F3/044

Abstract: A touch sensing system is provided. The touch sensing system includes a touch panel including touch sensors arranged in a grid along row and column directions; a touch controller including at least one transmission circuit to transmit a signal to the touch sensors and at least one reception circuit to detect a signal from the touch sensors; and a switching circuit to selectively connect each of the touch sensors to the at least one transmission circuit and the at least one reception circuit in accordance with an operation mode. The switching circuit connects each of the touch sensors to the at least one reception circuit in a touch mode and connects a first portion of the touch sensors to the at least one reception circuit and a second portion of the touch sensors to the at least one transmission circuit in a proximity mode.

公开(公告)号：US20210366405A1

公开(公告)日：2021-11-25

申请号：US17108141

申请日：2020-12-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： In-Suk KIM ,  Jungmoon KIM ,  Woo-Nyoung LEE

IPC: G09G3/3275 ,  G09G3/3266 ,  G09G3/20 ,  G09G3/3216 ,  G09G3/36

Abstract: An electronic device includes a first source group and a second source group, each of which includes a plurality of source channels, and a gamma block that receives first to 2i-th initial voltages (i being an integer of 1 or more), outputs first to 2i-th intermediate voltages by amplifying the first to i-th initial voltages, and outputs first to i-th gamma voltages to the first source group by buffering the first to 2i-th intermediate voltages, and a first buffer block that receives the first to 2i-th intermediate voltages from the gamma block and buffers the first to 2i-th intermediate voltages so as to be output to the second source group, and the gamma block may include a first resistor string including a plurality of resistors connected between nodes from which the first to i-th gamma voltages are output.