公开(公告)号：US20230061354A1

公开(公告)日：2023-03-02

申请号：US17721465

申请日：2022-04-15

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Kyung Tea PARK ,  Ji Woong KIM ,  Hyung Gun MA ,  Seong An PARK ,  Seong Joo LEE ,  Tae Hun LEE ,  Sang Hyun HEO

IPC: G09G3/32 ,  H03F3/70

Abstract: An analog front-end includes a (1-1)-th charge amplifier configured to differentially amplify a first and second sensing signals provided to a (1-1)-th input terminal and a (1-2)-th input terminal, respectively, and output a (1-1)-th differential signal. A (1-2)-th charge amplifier is configured to differentially amplify the second sensing signal and a third sensing signal provided to a (1-3)-th input terminal and a (1-4)-th input terminal, respectively, and output a (1-2)-th differential signal. A second charge amplifier is configured to differentially amplify the (1-1)-th differential signal and the (1-2)-th differential signal provided to a (2-1)-th input terminal and a (2-2)-th input terminal, respectively, and output a (2-1)-th differential signal and a (2-2)-th differential signal. A demodulation circuit is configured to filter the (2-1)-th differential signal and the (2-2)-th differential signal and output demodulated differential signals. An analog-to-digital converter is configured to output a sensing value based on the demodulated differential signals.

公开(公告)号：US20230073395A1

公开(公告)日：2023-03-09

申请号：US17986675

申请日：2022-11-14

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyung Gun MA ,  Oh Jo KWON ,  Ji Woong KIM ,  Jun Yong SONG ,  Seong Joo LEE ,  Sang Hyun HEO

IPC: G09G3/32

Abstract: A digital-analog converter of the disclosure converts digital image data to generate analog data signals. The digital-analog converter includes a voltage divider which generates a plurality of gamma reference voltages based on a first reference voltage and a second reference voltage; a global ramp including a plurality of gamma decoders which generates a plurality of global gamma voltages based on the gamma reference voltages; a decoder which selects one of the global gamma voltages according to the digital image data to generate the analog data signals; and a ramp controller which turns off at least some of the gamma decoders based on the digital image data.

公开(公告)号：US20220335871A1

公开(公告)日：2022-10-20

申请号：US17500875

申请日：2021-10-13

Applicant: Samsung Display Co., Ltd. ,  Korea Advanced Institute of Science and Technology

Inventor： Seong Joo LEE ,  Seok Tae KOH ,  Gyeong Gu KANG ,  Oh Jo KWON ,  Hyun Sik KIM ,  Gyu Wan LIM ,  Keum Dong JUNG

IPC: G09G3/20

Abstract: An output buffer is disclosed that includes: a buffer circuit that outputs an output signal to an output terminal based on a first input signal provided to a first input terminal and a second input signal provided to a second input terminal; and a current supply circuit that is connected in parallel to the buffer circuit, and provides an auxiliary current to the output terminal based on the first input signal and the second input signal.

公开(公告)号：US20250097401A1

公开(公告)日：2025-03-20

申请号：US18829888

申请日：2024-09-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Young Soo HWANG ,  Seong Joo LEE

IPC: H04N13/359 ,  G02F1/133 ,  G09G3/00 ,  H04N13/315 ,  H04N13/398

Abstract: A display device includes: pixels; a first electrode located on the pixels; a liquid crystal layer located on the first electrode; a second electrode located on the liquid crystal layer; a lens array located on the second electrode; and a control circuit including a first node electrically connected to the first electrode and a second node electrically connected to the second electrode. In a first mode, the control circuit applies a first node voltage to the first node, and applies, to the second node, a second node voltage which alternates a high level higher than a voltage level of the first node voltage and a low level lower than the voltage level of the first node voltage. In a second mode, the control circuit allows the first node and the second node to be short-circuited.

公开(公告)号：US20230072385A1

公开(公告)日：2023-03-09

申请号：US17702268

申请日：2022-03-23

Applicant: Samsung Display Co., LTD.

Inventor： Ji Woong KIM ,  Hyung Gun MA ,  Kyung Tea PARK ,  Seong Joo LEE ,  Keum Dong JUNG ,  Sang Hyun HEO

IPC: G06F3/044 ,  G06F3/041 ,  G09G3/32

Abstract: A sensor device includes first sensors; second sensors and the first sensors of mutual capacitance; a sensor transmitter electrically connected to the first sensors, the sensor transmitter supplying driving signals to the first sensors; a sensor receiver electrically connected to the second sensors, the sensor receiver receiving sensing signals from the second sensors, the sensor receiver demodulating the sensing signals by using demodulation clock signals; and a signal generator generating a basic clock signal, and generating the driving signals and the demodulation clock signals to be synchronized with the basic clock signal.

公开(公告)号：US20230031695A1

公开(公告)日：2023-02-02

申请号：US17671969

申请日：2022-02-15

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyung Gun MA ,  Ji Woong KIM ,  Jun Yong SONG ,  Seong Joo LEE ,  Keum Dong JUNG ,  Sang Hyun HEO

IPC: G09G3/3266 ,  H01L25/18

Abstract: A display device includes a display panel including pixels connected to scan lines and data lines, and connection line connected to the scan lines, and a scan driver which drives scan lines. The scan driver includes a scan signal output circuit which outputs a first output signal as a scan signal to a first output line and outputs a second output signal to a second output line, a signal distribution circuit which outputs the first output signal to a first or third connection line and outputs the second output signal to a second or fourth connection line in response to first and second distribution control signals, and a scan-off circuit which outputs gate-off level to at least one of the scan lines in response to first and second scan-off control signals.

公开(公告)号：US20210359699A1

公开(公告)日：2021-11-18

申请号：US17168448

申请日：2021-02-05

Applicant: SAMSUNG DISPLAY CO., LTD. ,  Korea Advanced Institute of Science and Technology

Inventor： Seong Joo LEE ,  Oh Jo KWON ,  Gyeong Gu KANG ,  Seok Tae KOH ,  Joon Chul GOH ,  Hyun Sik KIM ,  Bong Hyun YOU

IPC: H03M1/66 ,  G09G3/20

Abstract: A digital-to-analog converter (“DAC”) converts digital image data into analog image signals. The DAC includes a stage outputting different voltages to a first output terminal and a second output terminal based on a voltage supplied to a first input terminal, a voltage supplied to a second input terminal, and a first input bit. The stage includes a switch circuit including switches that are alternately turned on by a control signal, and outputting an intermediate output voltage to a third output terminal based on a first input voltage supplied to the first input terminal and a second input voltage supplied to the second input terminal, and a selector outputting one of the first input voltage and the second input voltage, and the intermediate output voltage.