公开(公告)号：US11989371B2

公开(公告)日：2024-05-21

申请号：US17825862

申请日：2022-05-26

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sanghyun Heo ,  Jiwoong Kim ,  Hyunggun Ma ,  Kyungtea Park ,  Seongan Park ,  Seongjoo Lee ,  Taehun Lee

IPC: G06F3/041 ,  G06F3/044 ,  H10K59/122

CPC classification number: G06F3/04182 ,  G06F3/041662 ,  G06F3/04164 ,  G06F3/0446 ,  G06F2203/04106 ,  H10K59/122

Abstract: A display device includes a display panel, an input sensor having a plurality of first sensing electrodes and a plurality of second sensing electrodes, and a readout circuit that includes a noise filter electrically connected to the plurality of first sensing electrodes and the plurality of second sensing electrodes to remove noise of a receiving signal received from the plurality of first sensing electrodes and the plurality of second sensing electrodes. The readout circuit determines which of the first sensing electrodes are influenced by a touch based on the receiving signal as influenced electrodes, during a first sensing mode. The readout circuit adjusts a passband of the noise filter based on the number of influenced electrode and transmits a transmitting signal to the influenced electrodes, during a second sensing mode.

公开(公告)号：US12040814B2

公开(公告)日：2024-07-16

申请号：US18118918

申请日：2023-03-08

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

Inventor： Kyungtea Park ,  Kun-Woo Park ,  Jae-Hyun Chung ,  Ohjo Kwon ,  Seung-Tak Ryu ,  Keumdong Jung

IPC: H03M1/38 ,  G06F3/01

CPC classification number: H03M1/38 ,  G06F3/01

Abstract: An analog-to-digital converter includes: a sample/hold circuit, which samples an analog signal, and outputs a first voltage; a digital-to-analog conversion circuit, which converts a digital signal to output a second voltage; an amplifier, which amplifies the first voltage and the second voltage; a noise shaping filter, which integrates a residual voltage corresponding to a difference between the amplified first voltage and the amplified second voltage, and generates a first integration voltage and a second integration voltage; a comparator, which compares a sum of the amplified first voltage, the first integration voltage, and the second integration voltage with the amplified second voltage; and a SAR logic, which outputs the digital signal according to a comparison result of the comparator, and controls the digital-to-analog conversion circuit.

公开(公告)号：US11663946B2

公开(公告)日：2023-05-30

申请号：US17723820

申请日：2022-04-19

Applicant: Samsung Display Co., Ltd.

Inventor： Jiwoong Kim ,  Ohjo Kwon ,  Ikhyun Kim ,  Hyunggun Ma ,  Kyungtea Park ,  Seongjoo Lee ,  Keumdong Jung ,  Sanghyun Heo ,  Donghyun Hwang

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2310/027 ,  G09G2310/0286 ,  G09G2310/0289 ,  G09G2310/0291

Abstract: A driving chip includes a data channel block including a plurality of data channels, a scan channel block disposed in a first direction from the data channel block and including a plurality of scan channels, a data pad block disposed outside the data channel block and the scan channel block in the first direction and including a plurality of data pads which respectively receive a data signal from the plurality of data channels, and a scan pad block disposed outside the data channel block and the scan channel block in the first direction, disposed outside the data pad block in a second direction crossing the first direction and including a plurality of scan pads which respectively receive a scan signal from the scan channels.

公开(公告)号：US11436861B2

公开(公告)日：2022-09-06

申请号：US17199324

申请日：2021-03-11

Applicant: Samsung Display Co., Ltd.

Inventor： Goeun Cha ,  Keumdong Jung ,  Yuna Kim ,  Kyungtea Park ,  Soojung Lee ,  Kangbin Jo

IPC: G06K9/00 ,  G06F3/147 ,  H01L27/32 ,  G06V40/12 ,  G06V40/13

Abstract: A display device includes: a display panel to display an image by generating light, a sensor disposed under the display panel to convert a light energy into an electrical energy, a voltage generator connected to the sensor, and a capacitive element connected to the sensor. The electrical energy generated by the sensor is charged in the capacitive element. The sensor senses an object using the light reflected by the object.