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公开(公告)号：US20230252926A1
公开(公告)日：2023-08-10
申请号：US17993966
申请日：2022-11-24
Applicant: Samsung Display Co., Ltd.
Inventor： JIN-TAEK HONG , SUNGCHUN PARK
CPC classification number: G09G3/20 , H02M3/158 , H02M1/0009 , H02H7/12 , H02H1/0007 , G09G2330/021 , G09G2330/04
Abstract: A power management circuit is disclosed that includes a boost converter, a pass transistor, and an overcurrent detect circuit. The boost converter is configured to convert an input voltage into a first power supply voltage. The pass transistor is configured to transfer the first power supply voltage as a second power supply voltage after a predetermined time from a time point at which the first power supply voltage is activated. The overcurrent detect circuit is configured to perform an overcurrent detect operation by sensing a current flowing through the pass transistor. A display device is also disclosed that includes the power management circuit.
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公开(公告)号：US20250093994A1
公开(公告)日：2025-03-20
申请号：US18805463
申请日：2024-08-14
Applicant: Samsung Display Co., Ltd.
Inventor： JIN-TAEK HONG
Abstract: A display device includes: a display layer; a sensor layer on the display layer; and a sensor driver to drive the sensor layer. The sensor layer includes: a plurality of sensing electrodes; a plurality of sensing lines connected to the plurality of sensing electrodes, respectively; a multiplexer circuit connected to the plurality of sensing lines, and including a control transistor including a gate electrode; and a connection line connected between the multiplexer circuit and the sensor driver. The sensor driver includes a sensing circuit connected between the connection line and the gate electrode of the control transistor, and to output a control signal to the gate electrode of the control transistor based on a sensing signal of the connection line.
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公开(公告)号：US20240290236A1
公开(公告)日：2024-08-29
申请号：US18655323
申请日：2024-05-06
Applicant: Samsung Display Co., Ltd.
Inventor： JIN-TAEK HONG , SUNGCHUN PARK
CPC classification number: G09G3/20 , H02H1/0007 , H02H7/12 , H02M1/0009 , H02M3/158 , G09G2330/021 , G09G2330/04
Abstract: A power management circuit is disclosed that includes a boost converter, a pass transistor, and an overcurrent detect circuit. The boost converter is configured to convert an input voltage into a first power supply voltage. The pass transistor is configured to transfer the first power supply voltage as a second power supply voltage after a predetermined time from a time point at which the first power supply voltage is activated. The overcurrent detect circuit is configured to perform an overcurrent detect operation by sensing a current flowing through the pass transistor. A display device is also disclosed that includes the power management circuit.
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4.发明公开公开(公告)号：US20230230514A1
公开(公告)日：2023-07-20
申请号：US17963801
申请日：2022-10-11
Applicant: Samsung Display Co., Ltd.
Inventor： HYUNGRAE NAM , JIN-TAEK HONG
CPC classification number: G09G3/006 , G09G3/32 , G09G2310/08 , G09G2310/0291 , G09G2330/028 , G09G2320/0276
Abstract: Provided is a display device which comprises a display panel including a plurality of pixels displaying an image based on a driving voltage, a reference voltage generator converting a sensing driving voltage generated by measuring the driving voltage into a sensing driving current, converting a preset reference driving voltage into a reference driving current, comparing the sensing driving current and the reference driving current, and generating a first reference voltage and a second reference voltage based on a difference between the sensing driving current and the reference driving current, a gamma voltage generator generating a plurality of gamma voltages by dividing the first reference voltage and the second reference voltage, and a data driver converting image data into a data voltage based on the gamma voltages and providing the data voltage to each of the pixels.
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