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公开(公告)号：US11017719B2
公开(公告)日：2021-05-25
申请号：US16567578
申请日：2019-09-11
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Hyo Jung Kim , Tae Young Kim , Yong Sung Park , Jong Woo Park , Mi Seon Seo , Keun Soo Lee , Ki Ju Im , Dae Youn Cho , Young Tae Choi , Hyun Cheol Hwang
IPC: G09G3/3233 , H01L27/32
Abstract: A display device includes a plurality of pixels. Each pixel includes a first transistor that controls an amount of current received from a first power supply voltage line connected via a second node to an organic light emitting diode in response to a voltage of a first node, a second transistor connected between a data line and the second node and that includes a first gate electrode connected to a first scan line, a light emitting line connected to a gate electrode of at least one light emitting transistor located in a current path between the first power supply voltage line and the organic light emitting diode, and a seventh transistor connected between one of at least one second gate electrode of the second transistor and the light emitting line. Accordingly, a threshold voltage of a switching transistor included in each of the plurality of pixels may be negatively shifted.
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公开(公告)号：US10854143B2
公开(公告)日：2020-12-01
申请号：US16240515
申请日：2019-01-04
Applicant: Samsung Display Co., Ltd.
Inventor： Dae Youn Cho , Tae Young Kim , Hee Jin Kim , Jong Woo Park , Young Tae Choi
IPC: G09G3/3291 , G09G3/3266 , G09G3/3233 , G09G3/3258 , H01L27/32
Abstract: An organic light-emitting display device includes a display unit having a plurality of pixel units. The display device also includes a timing controller for calculating a black bias pixel ratio (BBPR) of the display unit based on image signals provided by an external source and for generating a control signal based on the BBPR. The BBPR is the ratio of a number of pixel units in a black state to a total number of pixel units. A power supply unit provides a driving voltage to the display unit based on the control signal from the timing controller, wherein the power supply unit provides a first driving voltage to the display unit when the BBPR is less than a reference value and provides a second driving voltage, which is higher than the first driving voltage, otherwise.
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公开(公告)号：US11448550B2
公开(公告)日：2022-09-20
申请号：US17153678
申请日：2021-01-20
Applicant: Samsung Display Co., LTD.
Inventor： Dae Youn Cho , Eu Gene Kim , Ji Ho Moon , Jong Woo Park , Young Tae Choi
IPC: G01J1/42 , G09G3/3275
Abstract: An optical measurement device includes an optical sensor which measures an optical waveform of a reference object or a measurement object, a learner which receives a first optical waveform of the reference object from the optical sensor and learns frequency characteristics of the first optical waveform, a filter generator which analyzes the frequency characteristics of the first optical waveform and generates a frequency filter, a frequency modeling unit which receives a second optical waveform of the measurement object from the optical sensor and models frequency characteristics of the second optical waveform, and an optical characteristic detector which calculates an optical characteristic index of the second optical waveform based on an output value of the frequency modeling unit and the frequency filter.
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公开(公告)号：US11315482B2
公开(公告)日：2022-04-26
申请号：US16813982
申请日：2020-03-10
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Dae Youn Cho , Ji Ho Moon , Jong Woo Park , Young Tae Choi
Abstract: A pixel includes a light emitting device, a first transistor for controlling an amount of current flowing from a first power source to a second power source via the light emitting device, in response to a voltage applied to a first node, a second transistor coupled between a data line and a second node corresponding to a first electrode of the first transistor, and including a gate electrode coupled to a first scan line, a third transistor coupled between the first node and a third node corresponding to a second electrode of the first transistor, and including a gate electrode coupled to the first scan line, and a fourth transistor coupled between the third transistor and the third node, and configured to maintain a turn-on state.
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公开(公告)号：US20210256906A1
公开(公告)日：2021-08-19
申请号：US17226817
申请日：2021-04-09
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Hyo Jung Kim , Tae Young Kim , Yong Sung Park , Jong Woo Park , Mi Seon Seo , Keun Soo Lee , Ki Ju Im , Dae Youn Cho , Young Tae Choi , Hyun Cheol Hwang
IPC: G09G3/3233 , H01L27/32
Abstract: A display device includes a plurality of pixels. Each pixel includes a first transistor that controls an amount of current received from a first power supply voltage line connected via a second node to an organic light emitting diode in response to a voltage of a first node, a second transistor connected between a data line and the second node and that includes a first gate electrode connected to a first scan line, a light emitting line connected to a gate electrode of at least one light emitting transistor located in a current path between the first power supply voltage line and the organic light emitting diode, and a seventh transistor connected between one of at least one second gate electrode of the second transistor and the light emitting line. Accordingly, a threshold voltage of a switching transistor included in each of the plurality of pixels may be negatively shifted.
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Patent Agency Ranking
公开(公告)号：US10971560B2
公开(公告)日：2021-04-06
申请号：US16404021
申请日：2019-05-06
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Hyo Jung Kim , June Hwan Kim , Jong Woo Park , Dae Guen Choi , Jae Sik Son , Young Tae Choi
Abstract: Disclosed herein are a display device, an apparatus for testing a display device, and a method for testing a display device. A display device includes a first substrate having a display area and a non-display area defined thereon, the non-display area being on an outer side of the display area. The non-display area may include a plurality of test pads and a first dummy thin-film transistor electrically connected to the test pads. The first dummy thin-film transistor includes a dummy gate electrode, and a dummy source electrode and a dummy drain electrode insulated from the gate electrode and spaced apart from each other. A bending area is defined on the first substrate that at least partially traverses the display area and the non-display area, the bending area overlaps the first dummy thin-film transistor.
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公开(公告)号：US20200327850A1
公开(公告)日：2020-10-15
申请号：US16813982
申请日：2020-03-10
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Dae Youn Cho , Ji Ho Moon , Jong Woo Park , Young Tae Choi
IPC: G09G3/32
Abstract: A pixel includes a light emitting device, a first transistor for controlling an amount of current flowing from a first power source to a second power source via the light emitting device, in response to a voltage applied to a first node, a second transistor coupled between a data line and a second node corresponding to a first electrode of the first transistor, and including a gate electrode coupled to a first scan line, a third transistor coupled between the first node and a third node corresponding to a second electrode of the first transistor, and including a gate electrode coupled to the first scan line, and a fourth transistor coupled between the third transistor and the third node, and configured to maintain a turn-on state.
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公开(公告)号：US11922841B2
公开(公告)日：2024-03-05
申请号：US17950174
申请日：2022-09-22
Applicant: Samsung Display Co., Ltd.
Inventor： Yoon Ho Kim , Jong Woo Park , June Hwan Kim , Ki Ju Im , Young Tae Choi , Hyuncheol Hwang
CPC classification number: G09G3/006 , H01L27/124 , G09G2300/0426 , G09G2330/12
Abstract: The present disclosure relates to a display device, and the display device according to an embodiment includes: a substrate including a display area and a peripheral area; a plurality of light-emitting elements positioned in a display area; a plurality of pixel circuits connected to a plurality of light-emitting elements, respectively; a sensor positioned on the peripheral area of the substrate; a leakage current detecting circuit connected to the sensor; and a light emitting wiring connected to the leakage current detecting circuit and connected to at least one of the plurality of light-emitting elements, wherein the sensor includes a first sensor and the first sensor includes a first sensing transistor, and a first conductive pattern spaced apart from the channel of the first sensing transistor, and the first conductive pattern is positioned in the same layer as at least one of a plurality of layers configuring the transistor.
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公开(公告)号：US11848330B2
公开(公告)日：2023-12-19
申请号：US16875770
申请日：2020-05-15
Applicant: Samsung Display Co., Ltd.
Inventor： June Hwan Kim , Tae Young Kim , Jong Woo Park , Young Tae Choi , Hyun Cheol Hwang , Ki Ju Im
IPC: H01L27/12 , H01L29/786 , H10K59/121
CPC classification number: H01L27/1237 , H01L27/1218 , H01L27/1255 , H01L29/7869 , H01L29/78675 , H10K59/1213 , H10K59/1216
Abstract: A display device is provided. The display device comprises a substrate, a first buffer layer on the substrate, a first semiconductor layer on the first buffer layer and including a first active layer, a first gate insulating layer on the first semiconductor layer and the first buffer layer and covering the first active layer, a first conductive layer on the first gate insulating layer and including a first gate electrode, a second conductive layer on the first conductive layer and including a first source/drain electrode, a first interlayer insulating layer on the first conductive layer, a second semiconductor layer on the first interlayer insulating layer and including a second active layer, a second gate insulating layer on the second semiconductor layer and covering the second active layer, and a third conductive layer on the second gate insulating layer and including a second gate electrode and a second source/drain electrode, wherein the first gate insulating layer and the second gate insulating layer include different insulating materials.
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公开(公告)号：US11308874B2
公开(公告)日：2022-04-19
申请号：US16358700
申请日：2019-03-20
Applicant: Samsung Display Co., Ltd.
Inventor： Tae Young Kim , Jong Woo Park , Hyo Jung Kim , Ki Ju Im , Young Tae Choi
IPC: G09G3/3233 , G09G3/3266 , H01L29/78 , G09G3/3291 , H01L27/32
Abstract: A display device including an emitting element. A first transistor includes a first electrode electrically connected to a first supply voltage line, a second electrode electrically connected to the emitting element, and a gate electrode receiving a data signal, the first transistor being configured to transfer a driving current to the emitting element based on the data signal. A capacitor is connected between the gate electrode of the first transistor and the first supply voltage line. An electric field generating element is connected between the second electrode of the first transistor and the gate electrode of the first transistor and includes ferroelectrics.
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