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公开(公告)号:US12142175B2
公开(公告)日:2024-11-12
申请号:US18239725
申请日:2023-08-29
Applicant: Samsung Display Co., Ltd.
Inventor: Jun Young Ko , Tae Joon Kim , Eun Sol Seo , Yu Jin Sin , Jun Seong Lee , Jae Woo Choi
IPC: G09G3/00 , G06F3/041 , G09G3/3233 , G06F3/044
Abstract: An apparatus for inspecting a display device including a touch sensor may include: a power source generator configured to generate a pixel voltage of the display device; and a variable impedance circuit electrically connected to an output terminal of the power source generator, wherein the variable impedance circuit may include: a variable resistance circuit electrically connected to the power source generator and an output terminal of the variable impedance circuit, and including resistors connected in parallel with each other; and a variable capacitor circuit electrically connected to the power source generator and a ground voltage source.
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公开(公告)号:US20230410702A1
公开(公告)日:2023-12-21
申请号:US18239725
申请日:2023-08-29
Applicant: Samsung Display Co., Ltd.
Inventor: Jun Young KO , Tae Joon Kim , Eun Sol Seo , Yu Jin Sin , Jun Seong Lee , Jae Woo Choi
IPC: G09G3/00 , G06F3/041 , G09G3/3233
CPC classification number: G09G3/006 , G06F3/0412 , G09G3/3233 , G09G2330/10 , G09G2330/021 , G06F3/0416 , G09G2300/0819 , G06F3/0446
Abstract: An apparatus for inspecting a display device including a touch sensor may include: a power source generator configured to generate a pixel voltage of the display device; and a variable impedance circuit electrically connected to an output terminal of the power source generator, wherein the variable impedance circuit may include: a variable resistance circuit electrically connected to the power source generator and an output terminal of the variable impedance circuit, and including resistors connected in parallel with each other; and a variable capacitor circuit electrically connected to the power source generator and a ground voltage source.
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公开(公告)号:US10379641B2
公开(公告)日:2019-08-13
申请号:US15647110
申请日:2017-07-11
Applicant: Samsung Display Co., Ltd.
Inventor: Sang Hyun Lim , Chang Sub Jung , A Ra Jo , Jae Woo Choi
IPC: G06F3/044 , G06F3/038 , G06F3/0354 , G06F3/041
Abstract: A touch screen apparatus includes: an active area and a non-active area outside the active area; first sensing electrodes arranged along a first direction in the active area; second sensing electrodes arranged along a second direction intersecting the first direction in the active area, the second sensing electrodes being insulated from the first sensing electrodes; and at least one additional sensing electrode separated from the first and second sensing electrodes, the at least one additional sensing electrode being located in the non-active area.
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公开(公告)号:US20170357354A1
公开(公告)日:2017-12-14
申请号:US15603660
申请日:2017-05-24
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor: SANG HYUN LIM , Chang Sub Jung , A Ra Jo , Jae Woo Choi
CPC classification number: G06F3/0412 , G06F3/0416 , G06F3/044 , G06F2203/04105 , H05K1/16 , H05K1/189 , H05K2201/10053 , H05K2201/10128
Abstract: A display device includes a display panel configured to display an image on a front surface thereof, and a flexible circuit board connected to the display panel and configured to drive the display panel. The display device further includes a pressure sensor including a first electrode and a second electrode. The pressure sensor is configured to sense a change of capacitance of a capacitor, which is formed between the first electrode and the second electrode, in accordance with a pressure applied thereto. The flexible circuit board includes a first surface and a second surface facing the first surface. The first electrode and the second electrode are disposed on the first surface or the second surface.
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公开(公告)号:US12183228B2
公开(公告)日:2024-12-31
申请号:US18239725
申请日:2023-08-29
Applicant: Samsung Display Co., Ltd.
Inventor: Jun Young Ko , Tae Joon Kim , Eun Sol Seo , Yu Jin Sin , Jun Seong Lee , Jae Woo Choi
IPC: G09G3/00 , G06F3/041 , G09G3/3233 , G06F3/044
Abstract: An apparatus for inspecting a display device including a touch sensor may include: a power source generator configured to generate a pixel voltage of the display device; and a variable impedance circuit electrically connected to an output terminal of the power source generator, wherein the variable impedance circuit may include: a variable resistance circuit electrically connected to the power source generator and an output terminal of the variable impedance circuit, and including resistors connected in parallel with each other; and a variable capacitor circuit electrically connected to the power source generator and a ground voltage source.
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公开(公告)号:US12105915B2
公开(公告)日:2024-10-01
申请号:US17875335
申请日:2022-07-27
Applicant: Samsung Display Co., LTD.
Inventor: Hyun Wook Cho , Min Hong Kim , Tae Joon Kim , Hyung Bae Kim , Jung Mok Park , Il Ho Lee , Jae Woo Choi
CPC classification number: G06F3/04186 , G06F3/0412 , G06F3/041662 , G06F3/0446 , G06F2203/04111
Abstract: A display device includes a display unit including pixels. A sensor unit overlaps with the display unit and includes sensors. A sensor driver transmits a driving signal to the sensors, and receives sensing signals corresponding to the driving signal from the sensors. One sensing period includes a first sensing period and a second sensing period. The sensor driver transmits a first driving signal having a first frequency to the sensors in the first sensing period, and transmits a second driving signal having a second frequency different from the first frequency to the sensors in the second sensing period.
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公开(公告)号:US12087192B1
公开(公告)日:2024-09-10
申请号:US18469768
申请日:2023-09-19
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor: Tae Hyeon Yang , Jun Young Ko , Han Su Cho , Tae Joon Kim , Jae Woo Choi
IPC: G06F3/041 , G06F3/044 , G09G3/00 , G09G3/3233
CPC classification number: G09G3/006 , G06F3/0412 , G06F3/04166 , G06F3/0418 , G06F3/0446 , G09G3/3233 , G09G2300/0842 , G09G2330/12
Abstract: A display device includes a touch panel and a display panel. The touch panel outputs touch sensing signals. At least one of a plurality of touch sensing signals is converted from a time domain to a frequency domain, and then information on a thickness of a common electrode is detected based on a peak of the converted touch sensing signal. As a result, it is possible to inspect whether the common electrode is formed with a uniform thickness without destroying the display device.
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公开(公告)号:US11880520B2
公开(公告)日:2024-01-23
申请号:US17403100
申请日:2021-08-16
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor: Hyung Bae Kim , Tae Joon Kim , Jae Woo Choi
IPC: G06F3/041 , G06F3/044 , H10K59/40 , H10K59/179
CPC classification number: G06F3/0412 , G06F3/0446 , H10K59/1795 , H10K59/40
Abstract: A touch member for a display device includes first and second touch signal lines and an insulating layer between first and second conductive layers. The first touch signal line includes a first sub-touch signal line corresponding to the first conductive layer, and a second sub-touch signal line corresponding to the second conductive layer and connected to the first sub-touch signal line through first and second contact holes penetrating the insulating layer. The second touch signal line includes a third sub-touch signal line corresponding to the first conductive layer, and a fourth sub-touch signal line corresponding to the second conductive layer and connected to the third sub-touch signal line through third and fourth contact holes penetrating the insulating layer. The first and second contact holes are spaced by a first distance, and the third and fourth contact holes are spaced by a second distance less than the first distance.
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公开(公告)号:US11769430B2
公开(公告)日:2023-09-26
申请号:US17831330
申请日:2022-06-02
Applicant: Samsung Display Co., Ltd.
Inventor: Jun Young Ko , Tae Joon Kim , Eun Sol Seo , Yu Jin Sin , Jun Seong Lee , Jae Woo Choi
IPC: G09G3/00 , G06F3/041 , G09G3/3233 , G06F3/044
CPC classification number: G09G3/006 , G06F3/0412 , G09G3/3233 , G06F3/0416 , G06F3/0446 , G06F2203/04111 , G09G2300/0426 , G09G2300/0819 , G09G2300/0842 , G09G2330/021 , G09G2330/10
Abstract: A method for inspecting a display device (which includes a pixel electrode and a touch sensor overlapping the pixel electrode) includes: adjusting an impedance value of a variable impedance circuit of an inspection apparatus according to a model of the display device; driving a power source generator of the inspection apparatus; supplying a pixel voltage to the pixel electrode through an output terminal connected to the variable impedance circuit; driving the touch sensor; and detecting a defect related to the pixel electrode based on sensing signals output from the touch sensor.
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公开(公告)号:US11495165B2
公开(公告)日:2022-11-08
申请号:US17457818
申请日:2021-12-06
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor: Jae Woo Choi , Tae Joon Kim , Eun Sol Seo , Hyun Wook Cho
Abstract: A display device is described including a display panel for displaying an image and an input sensing unit disposed on the display panel for sensing a user input. The input sensing unit includes: an electrode unit including first electrodes and second electrodes which intersect each other and a control unit for determining the proximity of an object or the shape of the object, based on capacitance change values of the first electrodes and the second electrodes. In a first mode the input sensing unit is driven using a self-capacitance method. The control unit may merge the capacitance change values, and determine the proximity of the object based on the merged value. In a second mode based on mutual capacitance, the control unit may determine the shape of the object.
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