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公开(公告)号：US12142174B2
公开(公告)日：2024-11-12
申请号：US18230539
申请日：2023-08-04
Applicant: Samsung Display Co., LTD.
Inventor： Seongjoo Lee , Joon-Chul Goh , Ohjo Kwon
IPC: G09G3/00 , G09G3/20 , G09G3/3233
Abstract: A display device includes: a display panel including a normal pixel in a display region and a test pixel in a peripheral region, a sensing line coupled to the test pixel, and a sensing circuit configured to sense a mobility characteristic of the test pixel by measuring a current at a source node of the test pixel through the sensing line. The source node of the test pixel is electrically separated from the sensing line in a data writing period of a frame period, and is electrically coupled to the sensing line in an emission period of the frame period.
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Patent Agency Ranking
公开(公告)号：US20220311397A1
公开(公告)日：2022-09-29
申请号：US17567512
申请日：2022-01-03
Inventor： Seok-Tae Koh , Seongjoo Lee , Hyun-Sik Kim , Gyeong-Gu Kang , Seunghwa Shin , Ohjo Kwon , Keumdong Jung
Abstract: An amplifier circuit includes a differential input terminal, a first power supplier, an amplifier, and a current redistributor. A differential input terminal includes a first differential pair of a p-type and a second differential pair of an n-type, and receives an input voltage. A first power supplier supplies a bias current to the differential input terminal. An amplifier receives an output current of the first differential pair and an output current of the second differential pair, and applies an amplified current to an output node. A current redistributor receives the output current of the first differential pair and the output current of the second differential pair, and provides a redistribution current to the differential input terminal.
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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.
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公开(公告)号：US11736079B2
公开(公告)日：2023-08-22
申请号：US17567512
申请日：2022-01-03
Inventor： Seok-Tae Koh , Seongjoo Lee , Hyun-Sik Kim , Gyeong-Gu Kang , Seunghwa Shin , Ohjo Kwon , Keumdong Jung
CPC classification number: H03F3/45273 , G09G3/20 , H03F1/0211 , H03F3/45269 , G09G2310/0267 , G09G2310/0275 , G09G2310/0291 , G09G2330/02 , H03F2203/45476
Abstract: An amplifier circuit includes a differential input terminal, a first power supplier, an amplifier, and a current redistributor. A differential input terminal includes a first differential pair of a p-type and a second differential pair of an n-type, and receives an input voltage. A first power supplier supplies a bias current to the differential input terminal. An amplifier receives an output current of the first differential pair and an output current of the second differential pair, and applies an amplified current to an output node. A current redistributor receives the output current of the first differential pair and the output current of the second differential pair, and provides a redistribution current to the differential input terminal.
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公开(公告)号：US12230183B2
公开(公告)日：2025-02-18
申请号：US18370460
申请日：2023-09-20
Applicant: Samsung Display Co., LTD.
Inventor： Seongjoo Lee , Joon-Chul Goh
IPC: G09G3/20
Abstract: A display device includes a display panel including pixels arranged along a plurality of pixel lines, each pixel line extending in a first direction, a data driver which applies data voltages to the pixels, and a timing controller which controls the data driver. The data driver includes first channels which applies the data voltages to the pixels of first pixel lines and is adjacent to the display panel in the first direction, and second channels which applies the data voltages to the pixels of second pixel lines and is adjacent to the display panel in a direction opposite to the first direction.
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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.
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