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公开(公告)号：US11921946B2
公开(公告)日：2024-03-05
申请号：US17821455
申请日：2022-08-22
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Do Ik Kim , Gwang Bum Ko , Sung Hwan Kim
CPC classification number: G06F3/0414 , G06F3/04144 , G06F3/0416 , G06F3/043 , H10K50/841 , H10K59/40 , H10N30/302 , G06F3/0412 , G06F3/044 , G06F3/046 , G06F2203/04101 , G06F2203/04105 , H10K59/12
Abstract: A display device that senses externally applied pressure and a change in the resonant frequency of a piezoelectric element. The display device includes a piezoelectric sensor layer including a piezoelectric sensor; and a display panel disposed on the piezoelectric sensor layer. The piezoelectric sensor includes: a piezoelectric element having a first electrode, a second electrode facing the first electrode, and a piezoelectric material disposed between the first electrode and the second electrode; an alternating current (AC) voltage generator connected to the first electrode and applies a voltage having a resonance frequency to the piezoelectric element. A sensing circuit connected to the second electrode is configured to measure a change in impedance of the piezoelectric element.
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公开(公告)号：US11429211B2
公开(公告)日：2022-08-30
申请号：US17015419
申请日：2020-09-09
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Do Ik Kim , Gwang Bum Ko , Jung Hak Kim , Sang Chul Lee , Ga Young Kim
Abstract: There is provided a display device including a high-sensitivity touch sensor. A display device includes: pixels arranged in a display region; sensing electrodes arranged in a sensing region; sensing lines coupled to the respective sensing electrodes; a noise detection electrode disposed on the same layer as the sensing electrodes; sensing channels each including a first input terminal coupled to any one of the sensing electrodes and a second input terminal coupled to the noise detection electrode, the sensing channels each generating an output signal corresponding to a voltage difference between the first and second input terminals; and a processor detecting a touch input, using the output signals of the sensing channels.
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公开(公告)号：US11231824B2
公开(公告)日：2022-01-25
申请号：US16840891
申请日：2020-04-06
Applicant: Samsung Display Co., Ltd.
Inventor： Gwang Bum Ko , Hyun Jae Na
Abstract: A touch panel including a sensing cell and a sensing line disposed on a transparent substrate. Each of the sensing cell and the sensing line includes at least one pattern line. The at least one pattern line includes unit patterns, each of the unit patterns including a first line extending in a first direction, a second line connected to the first line and extending in a second direction intersecting the first direction, a third line connected to the first line and extending in a third direction intersecting the first direction, and a fourth line connected to the third line and extending in the first direction. The first line, the second line, the third line, and an extension of the fourth line form a trapezoid. The unit patterns are repeatedly arranged and adjacent unit patterns are connected each other.
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公开(公告)号：US10592052B2
公开(公告)日：2020-03-17
申请号：US16573461
申请日：2019-09-17
Applicant: Samsung Display Co., Ltd.
Inventor： Gwang Bum Ko , Hyun Jae Na , Hyoung Wook Jang , Ye Ri Jeong , Jeong Yun Han
Abstract: A touch sensor includes: a plurality of first sensor electrode columns disposed in a sensing area, the plurality of first sensor electrode columns each including one or more first sensor electrodes; a plurality of second sensor electrode columns alternately disposed with the first sensor electrode columns in the sensing area, the plurality of second sensor electrode columns each including a plurality of second sensor electrodes having a length defined by a longitudinal axis and a width extending in a direction across the length; a plurality of lines connected to the first sensor electrode columns and the second sensor electrode columns; and a pad unit including a plurality of pads connected to the lines, wherein at least some of the second sensor electrodes have a width that varies along the longitudinal axis of its respective second electrodes.
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公开(公告)号：US10380403B2
公开(公告)日：2019-08-13
申请号：US15968646
申请日：2018-05-01
Applicant: Samsung Display Co., Ltd.
Inventor： Gwang Bum Ko , Do Ik Kim , Seung Hwan Chung , Sung Hwan Kim
IPC: H01L27/00 , G06K9/00 , G02B19/00 , H01L31/0232 , H01L27/15 , H01L31/153 , F21V8/00 , H01L27/32 , G02B6/08 , G02B3/00 , G02B5/00
Abstract: A display device with a display panel including a display area and a plurality of pixels arranged in the display area, a photosensor layer including a sensing area overlapping the display area and a plurality of photosensors arranged in the sensing area, a light-guiding layer arranged between the display panel and the photosensor layer and configured to include a plurality of light-transmission holes corresponding to the photosensors, respectively, and a light-condensing layer arranged between the display panel and the photosensor layer to overlap the light-guiding layer.
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Patent Agency Ranking
公开(公告)号：US11340723B2
公开(公告)日：2022-05-24
申请号：US17215867
申请日：2021-03-29
Applicant: Samsung Display Co., Ltd.
Inventor： Gwang Bum Ko
Abstract: A touch sensor includes sensing blocks. Each of the sensing blocks includes first sensing cells of a first group, first sensing cells of a second group, and second sensing cells. The first sensing cells of the first group are arranged in a first direction, spaced apart from each other with first separation areas therebetween, and coupled to an identical first electrical node. The first sensing cells of the second group are arranged in the first direction, spaced apart from each other with second separation areas therebetween, and coupled to an identical second electrical node. The second sensing cells respectively extend in a second direction in the first separation areas and the second separation areas. First sensing cells at borders of respective sensing blocks adjacent in the first direction are coupled to different electrical nodes.
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公开(公告)号：US10775942B2
公开(公告)日：2020-09-15
申请号：US15871006
申请日：2018-01-14
Applicant: Samsung Display Co., Ltd.
Inventor： Jeong Yun Han , Gwang Bum Ko , Soo Jung Lee
Abstract: A touch screen includes a base film which includes a sensing area and a non-sensing area; a plurality of first touch electrodes including a plurality of sub-touch electrodes disposed in the sensing area; a plurality of second touch electrodes disposed in the sensing area; first and second sensing lines disposed in the non-sensing area; and a bridge line which is disposed in the non-sensing area and is connected to the first sensing line. The bridge line includes a multilayer structure in which at least two sub-bridge lines are stacked to overlap each other in plan view.
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公开(公告)号：US10579191B2
公开(公告)日：2020-03-03
申请号：US15868964
申请日：2018-01-11
Applicant: Samsung Display Co., Ltd.
Inventor： Gwang Bum Ko , Soo Jung Lee , Jeong Yun Han
Abstract: A touch sensor includes a base, first sensing electrode columns (FSECs), and second sensing electrode columns (SSECs). The base includes a sensing region (SR) including a rounded corner (RC), and a non-SR outside the SR. The FSECs extend in a direction on the base, each FSEC among the FSECs including first sensing electrodes (FSEs), each FSE among the FSEs including sub-electrodes. The SSECs are alternately disposed with the FSECs on the base, each SSEC among the SSECs including second sensing electrodes (SSEs). Sub-electrodes of one of adjacent FSEs among the FSEs are electrically connected to respective sub-electrodes of another of the adjacent FSEs. A sub-electrode closest to the RC among the sub-electrodes includes a rounded edge (RE) corresponding to the RC. A SSE closest to the RC among the SSEs includes a RE corresponding to the RC, and a protrusion part protruding toward the sub-electrode including the RE.
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公开(公告)号：US10444900B2
公开(公告)日：2019-10-15
申请号：US15603395
申请日：2017-05-23
Applicant: Samsung Display Co., Ltd.
Inventor： Gwang Bum Ko , Hyun Jae Na , Hyoung Wook Jang , Ye Ri Jeong , Jeong Yun Han
Abstract: A touch sensor includes: a plurality of first sensor electrode columns disposed in a sensing area, the plurality of first sensor electrode columns each including one or more first sensor electrodes; a plurality of second sensor electrode columns alternately disposed with the first sensor electrode columns in the sensing area, the plurality of second sensor electrode columns each including a plurality of second sensor electrodes having a length defined by a longitudinal axis and a width extending in a direction across the length; a plurality of lines connected to the first sensor electrode columns and the second sensor electrode columns; and a pad unit including a plurality of pads connected to the lines, wherein at least some of the second sensor electrodes have a width that varies along the longitudinal axis of its respective second electrodes.
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公开(公告)号：US20190018541A1
公开(公告)日：2019-01-17
申请号：US15846118
申请日：2017-12-18
Applicant: Samsung Display Co., Ltd.
Inventor： Jeong Yun HAN , Hoe Seok Na , Gwang Bum Ko , Jeong Hoon Bang
CPC classification number: G06F3/0418 , G06F3/044 , G06F2203/04112 , H01L27/323 , H01L27/3262 , H01L27/3276
Abstract: An input sensing unit includes sensing electrodes. Each of the sensing electrodes includes: first electrodes arranged in a column extending in a first direction; a second electrode extending in the first direction; first sensing lines connected to the first electrodes, the first sensing lines extending in the first direction; and a second sensing line connected to the second electrode, the second sensing line extending in the first direction. The first sensing lines are connected to first pad portions. The second sensing line is connected to a second pad portion. The second pad portions or some of the first pad portions are disposed between a first pad portion among the first pad portions and the second pad portion, the first pad portion being connected to a first sensing line closest to the second sensing line among the first sensing lines.
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