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公开(公告)号：US20240233435A9
公开(公告)日：2024-07-11
申请号：US18374547
申请日：2023-09-28
Applicant: Samsung Display Co., Ltd.
Inventor： Hyun Dae LEE , Il Nam KIM , Hyoung Wook JANG , Kang Bin JO , Go Eun CHA , Hee Chul HWANG
CPC classification number: G06V40/1318 , G06F1/1643 , G06V40/1341 , G06V40/1365 , G06V2201/07
Abstract: A display device comprises a display panel comprising an image display area and a non-display area, display pixels comprising light-emitting elements in the image display area and pixel driving units connected to the light-emitting elements, light-sensing pixels comprising photo-detecting units in a fingerprint sensing area in the image display area, and sense driving units connected to the photo-detecting units, a light-sensing reset driver configured to supply reset signals to the sense driving units of the light-sensing pixels for at least each horizontal line among the light-sensing pixels in response to a line select signal from a display driving circuit; and a fingerprint scan driver configured to sequentially supply a fingerprint scan signal to the sense driving units of the light-sensing pixels in response to a fingerprint scan control signal from the display driving circuit.
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公开(公告)号：US20230316966A1
公开(公告)日：2023-10-05
申请号：US18086659
申请日：2022-12-22
Applicant: Samsung Display Co., Ltd.
Inventor： Go Eun CHA , Il Nam KIM , Seung Hyun MOON , Dong Wook YANG , Hyun Dae LEE , Kang Bin JO
CPC classification number: G09G3/006 , G01R31/2879 , G06V40/13
Abstract: A test system, a method of testing a display cell using the same, and a display device are provided. There is provided a test system comprising: a display cell including a pixel and a data line connected to the pixel, an optical sensor and a readout line connected to the optical sensor, and a signal selection unit for selectively connecting a test signal line to any one of the data line and the readout line; and a test member configured to apply a first test control signal to the signal selection unit in a data test mode and apply a second test control signal to the signal selection unit in a sensing test mode.
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公开(公告)号：US20230114518A1
公开(公告)日：2023-04-13
申请号：US18064797
申请日：2022-12-12
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Kyung Tea PARK , Jong Hyun LEE , Kang Bin JO , Go Eun CHA
Abstract: An input sensing device includes sensor pixels initialized in response to a reset signal provided through a reset line, and output a sensing signal to a read-out line in response to a scan signal provided through a scan line. A controller generates at least one start signal and clock signals. A selector selectively provides the at least one start signal and the clock signals to first control lines or second control lines. A reset driver connected to the first control lines, and supplying reset signals to at least some of the reset lines based on the at least one start signal and the clock signals provided through the first control lines. A scan driver is connected to the second control lines, and supplies scan signals to at least some of the scan lines based on the at least one start signal and the clock signals.
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公开(公告)号：US20210043692A1
公开(公告)日：2021-02-11
申请号：US16840212
申请日：2020-04-03
Applicant: Samsung Display Co., Ltd.
Inventor： Go Eun CHA , Keum Dong JUNG , Suk KIM , Soo Jung LEE
Abstract: A foldable display device includes: a first substrate, a first thin-film transistor layer on the first substrate, a light emitting element layer on the first thin-film transistor layer, and a fingerprint sensor layer to receive light reflected by an external object. The fingerprint sensor layer includes: a second substrate under the first substrate, a second thin-film transistor layer under the second substrate, and a light receiving element layer under the second thin-film transistor layer.
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公开(公告)号：US20250022308A1
公开(公告)日：2025-01-16
申请号：US18901115
申请日：2024-09-30
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Il Nam KIM , Seung Hyun MOON , Dong Wook YANG , Hyun Dae LEE , Kang Bin JO , Go Eun CHA , Hee Chul HWANG
IPC: G06V40/13 , G09G3/3233 , H10K39/34 , H10K59/131
Abstract: A display device including: scan lines including first and second scan lines; pixels connected to the scan lines; photo sensors connected to some of the scan lines, the photo sensors including a first photo sensor connected to the first scan line and a readout line, and a second photo sensor connected to the second scan line and the readout line; a scan driver to provide scan signals to the scan lines; and a readout circuit to receive, through the readout line, detection signals which are outputted from the photo sensors in response to the scan signals, wherein, while the scan signals are provided to the first and second scan lines, the readout circuit samples a detection signal of one of the first photo sensor and the second photo sensor without sampling a detection signal of the other one of the first photo sensor and the second photo sensor.
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Patent Agency Ranking
公开(公告)号：US20240078836A1
公开(公告)日：2024-03-07
申请号：US18505063
申请日：2023-11-08
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Kyung Tea PARK , Jong Hyun LEE , Kang Bin JO , Go Eun CHA
CPC classification number: G06V40/1306 , G06V40/1318 , G09G3/2092 , G09G2310/0275 , G09G2330/028
Abstract: An input sensing device includes: sensor pixels, a horizontal driver, a selection circuit, and a vertical driver. Each of the sensor pixels is connected to a plurality of driving lines and a one of a plurality of signal input lines. The horizontal driver sequentially applies a horizontal driving signal to the sensor pixels through the driving lines. The selection circuit is connected to n of the signal input lines (n is a natural number of 2 or more) and to one output line. The selection circuit sequentially outputs n sensing signals received through the n signal input lines to the one output line. The vertical driver receives the n sensing signals through the one output line. The horizontal driver applies the horizontal driving signal n times to a given one of the driving lines to correspond to the n sensing signals.
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公开(公告)号：US20220075980A1
公开(公告)日：2022-03-10
申请号：US17406299
申请日：2021-08-19
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： JONG HYUN LEE , Eun Jin SUNG , Kyung Tea PARK , Kang Bin JO , Go Eun CHA
Abstract: A display device includes a light emitting electrode on a thin film transistor layer. The thin film transistor layer includes a lower metal layer on a substrate and a semiconductor layer above and overlapping the lower metal layer. The lower metal layer includes a plurality of curved portions. Edges of respective ones of the curved portions are on concentric circles having substantially a same center point and an edge of the semiconductor layer is on the lower metal layer.
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公开(公告)号：US20240161684A1
公开(公告)日：2024-05-16
申请号：US18387807
申请日：2023-11-07
Applicant: Samsung Display Co., LTD.
Inventor： Hyun Dae LEE , Kang Bin JO , Il Nam KIM , Go Eun CHA , Hee Chul HWANG
IPC: G09G3/32
CPC classification number: G09G3/32 , G09G2300/0426 , G09G2300/0861 , G09G2310/061 , G09G2310/08
Abstract: A display device includes: a display panel; an emission driver; a scan driver; and a timing controller. The display panel includes light emitting pixels and photosensitive pixels, where the photosensitive pixels are operated in an initialization period, a light exposure period and a sensing period. The emission driver supplies emission control signals to emission control lines connected to the light emitting pixels, based on an emission start signal. The scan driver supplies scan signals to scan lines connected to the light emitting pixels and the photosensitive pixels, based on a scan start signal. The timing controller generates the emission start signal having a single pulse of a gate-off level and the scan start signal having a single pulse of a gate-on level in a last frame period among frame periods corresponding to the light exposure period and in each of frame periods corresponding to the sensing period.
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公开(公告)号：US20230402014A1
公开(公告)日：2023-12-14
申请号：US18191765
申请日：2023-03-28
Applicant: Samsung Display Co., LTD.
Inventor： Il Nam KIM , Hyun Dae LEE , Kang Bin JO , Go Eun CHA , Hee Chul HWANG
IPC: G09G3/3266 , G06V40/13 , G06F3/041
CPC classification number: G09G3/3266 , G06V40/1318 , G06F3/04184 , G09G2360/14 , G09G2354/00 , G09G2310/061
Abstract: A display device includes: a display panel; a scan driver to provide scan signals to scan lines; an emission driver to provide emission control signals to emission control lines; and a readout circuit to receive a sensing signal from a readout line. The display panel includes: a first pixel in a first row, and connected to a first sub-scan line from among the scan lines, and a first emission control line; a first photo sensor in the first row, and connected to the first sub-scan line, a reset control line, and the readout line; a second pixel in a second row, and connected to a second sub-scan line from among the scan lines, and a second emission control line; and a second photo sensor in the second row, and connected to the second sub-scan line, a third emission control line, and the readout line.
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公开(公告)号：US20230154411A1
公开(公告)日：2023-05-18
申请号：US17887973
申请日：2022-08-15
Applicant: Samsung Display Co., LTD.
Inventor： Hyun Dae LEE , Il Nam KIM , Seung Hyun MOON , Dong Wook YANG , Kang Bin JO , Go Eun CHA
IPC: G09G3/3266 , G06V40/13
CPC classification number: G09G3/3266 , G06V40/1318 , G09G2310/08 , G09G2310/0294 , G09G2300/0828 , G09G2360/14 , G09G2310/061
Abstract: A display device comprises a display panel which comprises scan lines, sensing lines, pixels electrically connected to each of the scan lines, and photo sensors electrically to each of the scan lines and the sensing lines, a scan driver which outputs scan signals to the scan lines according to a scan control signal, a timing controller which outputs the scan control signal to the scan driver, and a readout circuit which receives light sensing signals of the photo sensors from the sensing lines. The timing controller sets a frame frequency of the scan control signal to a first frame frequency in a first mode in which the display panel displays an image. The timing controller sets the frame frequency of the scan control signal to a second frame frequency in a second mode in which the photo sensors sense a fingerprint.
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