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公开(公告)号：US12204718B2
公开(公告)日：2025-01-21
申请号：US18397060
申请日：2023-12-27
Applicant: Samsung Display Co., Ltd.
Inventor： Yerin Oh , Taejoon Kim , Jinwoo Park , Seungrok Lee , Il Ho Lee , Wankee Jun
Abstract: An electronic device including: a display layer; a sensor layer disposed on the display layer; a memory configured to store first sensitivity values and first differential sensitivity values; and a sensor driver configured to calculate second sensitivity values from a plurality of nodes and to calculate second differential sensitivity values, wherein the sensor driver is configured to: calculate difference values between the first differential sensitivity values and the second differential sensitivity values; calculate a first average value of a first row or column of values among the difference values; and calculate a second average value of remaining values among the difference values, wherein the remaining values were not used in the first average value calculation, and wherein the sensor driver determines whether to update a baseline, based on the first average value and the second average value.
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公开(公告)号：US12189893B2
公开(公告)日：2025-01-07
申请号：US18239225
申请日：2023-08-29
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Seung Rok Lee , Jin Woo Park , Tae Joon Kim , Jung Mok Park , Il Ho Lee
IPC: G06F3/041
Abstract: A touch test device for a display device, includes a loading unit receiving a display device. The display device includes a touch sensing unit having driving electrodes and sensing electrodes. A touch driving circuit driving the driving electrodes and the sensing electrodes and detecting touch signal data for the driving electrodes, sensing signal data for the sensing electrodes, and touch data of touch nodes positioned at intersections between the driving electrodes and the sensing electrodes. A test processing circuit calculates parameter values inversely proportional to resistance deviations of the driving electrodes and the sensing electrodes, performs an arithmetic operation on the parameter values and the touch data of the touch nodes to provide corrected touch data, and detects defects in the driving electrodes and the sensing electrodes according to a result of comparing and analyzing the corrected touch data.
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公开(公告)号：US11977703B2
公开(公告)日：2024-05-07
申请号：US18174523
申请日：2023-02-24
Applicant: Samsung Display Co., LTD.
Inventor： Jin Woo Park , Min Hong Kim , Tae Joon Kim , Il Ho Lee , Wan Kee Jun
CPC classification number: G06F3/04166 , G06F3/0412 , G06F3/0446
Abstract: A touch detection module, includes: a plurality of driving electrodes arranged side by side; a plurality of sensing electrodes staggered with respect to the driving electrodes; and a touch driving circuit configured to supply touch driving signals to the plurality of driving electrodes and to detect touch detection signals through the plurality of sensing electrodes to identify touch position coordinates, wherein the touch driving circuit is configured: to vary frequency modulation parameter set values in response to a change in a frequency of reference clocks, and to generate and supply a frequency of the touch driving signals by using the reference clocks and a varied frequency modulation parameter set value.
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公开(公告)号：US11409395B2
公开(公告)日：2022-08-09
申请号：US16667335
申请日：2019-10-29
Applicant: Samsung Display Co., Ltd.
Inventor： Il Ho Lee , Sanghyuk Kwon , Yeongbin Kim , Chansik Noh , Eunchul Shin , Sangmin Choi
Abstract: A testing device for testing a display module may include touch test pads electrically connected to touch pads of a display module, a first power test pad and a second power test pad electrically connected to a first power pad and a second power pad of the display module, a voltage generator providing a first test power voltage and a second power test voltage to the first power test pad and second power test pad, and a capacitance measurement circuit measuring capacitance between the first power test pad and second power test pad.
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公开(公告)号：US11789566B2
公开(公告)日：2023-10-17
申请号：US17674980
申请日：2022-02-18
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Hyun Wook Cho , Min Hong Kim , Jung Mok Park , Il Ho Lee
CPC classification number: G06F3/04184 , G06F3/0446 , G06F3/04166
Abstract: A display device including: pixels; a data driver configured to start outputting data voltages to at least some of the pixels at a first time during a horizontal period, and end outputting the data voltages at a second time during the horizontal period; sensors; and a sensor driver configured to change a logic level of a sensing signal of at least some of the sensors at a third time different from the first time and the second time during the horizontal period, wherein at least one of the first time, the second time, and the third time is changed according to a number of times a logic level of a vertical synchronization signal is changed while a logic level of a horizontal synchronization signal is maintained.
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Patent Agency Ranking
公开(公告)号：US20190332208A1
公开(公告)日：2019-10-31
申请号：US16505919
申请日：2019-07-09
Applicant: Samsung Display Co., Ltd.
Inventor： Il Ho Lee , Seung-Hee Lee , Seoung Bum Pyoun , Young-Jin Kim
Abstract: A display device includes a display panel including pixels, an active area on which an image is configured to be displayed, and a black matrix area on which an image is not configured to be displayed, touch sensor electrodes configured to detect a touch of an external object, the touch sensor electrodes disposed in the active area, and detection input electrodes configured to generate mutual capacitance with the touch sensor electrodes, the detection input electrodes disposed in an edge area of the display panel that overlaps the black matrix area.
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公开(公告)号：US09092103B2
公开(公告)日：2015-07-28
申请号：US13844211
申请日：2013-03-15
Applicant: Samsung Display Co., Ltd.
Inventor： Moonsung Choi , Incheol Kim , Seongmo Hwang , Jihong Park , Il Ho Lee , Seungho Nam
CPC classification number: G06F3/0412 , G06F3/0416 , G06F3/044 , G06F3/045 , G06F2203/04101 , G06F2203/04111 , G06F2203/04112
Abstract: A display apparatus includes a display panel that displays an image during a display period and detects a touch event during a non-display period. The display panel includes a plurality of common electrodes and a plurality of data lines capacitively coupled to the common electrodes during the non-display period. Coordinate information of a position at which the touch event occurs is calculated on the basis of a capacitance variation of the common electrodes and the data lines.
Abstract translation: 显示装置包括显示面板，其在显示期间显示图像，并且在非显示期间检测触摸事件。 显示面板包括多个公共电极和在非显示期间电容耦合到公共电极的多条数据线。 基于公共电极和数据线的电容变化来计算发生触摸事件的位置的坐标信息。
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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：US11768566B2
公开(公告)日：2023-09-26
申请号：US16703826
申请日：2019-12-04
Applicant: Samsung Display Co., Ltd.
Inventor： In Cheol Kim , Il Ho Lee , Byoung Won Choi , Jin Woo Park
IPC: G06F3/044
CPC classification number: G06F3/0443
Abstract: A touch screen panel including a substrate having an effective area and a pad area, sensing electrodes disposed in the effective area, pads disposed in the pad area, wirings connecting the sensing electrodes and the pads, respectively, the wirings each having different lengths, and an electrostatic dispersion pad disposed adjacent to a sensing electrode disposed closest to the pad area among the sensing electrodes.
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公开(公告)号：US11681391B2
公开(公告)日：2023-06-20
申请号：US17401695
申请日：2021-08-13
Applicant: Samsung Display Co., Ltd.
Inventor： Il Ho Lee , Sanghun Park , Jihoon Kim , Yongsub So
CPC classification number: G06F3/04164 , G06F3/0412 , G06F3/0446
Abstract: A display device includes a display panel configured to display an image, an input sensor disposed on the display panel to sense an input and including a first area and a second area, and a sensor controller connected to the input sensor. The input sensor includes first sensing electrodes disposed in the first area, second sensing electrodes disposed in the second area, and a boundary sensing electrode disposed to overlap a boundary between the first and second areas. The boundary sensing electrode forms a mutual capacitor with one or more of the first sensing electrodes that are adjacent to the boundary sensing electrode, and forms a mutual capacitor with one or more of the second sensing electrodes that are adjacent to the boundary sensing electrode.
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