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公开(公告)号：US12198628B2
公开(公告)日：2025-01-14
申请号：US18226912
申请日：2023-07-27
Applicant: Samsung Display Co., LTD.
Inventor： Kyung Hoon Chung , Byung Chang Yu
IPC: G09G3/3233
Abstract: A light emitting display device includes: a light emitting element including an anode connected to a first line; a first transistor; a second transistor including a first electrode connected to a data line, and a second electrode connected to a gate electrode of the first transistor; a third transistor including a first electrode connected to the first line, and a second electrode connected to a first electrode of the first transistor; a fourth transistor including a second electrode connected to the gate electrode; a sixth transistor including a first electrode connected to a second electrode of the first transistor, and a second electrode connected to a second line; a first capacitor including a first electrode connected to the gate electrode and a second electrode connected to the second electrode of the first transistor; and a second capacitor including a second electrode connected to the second electrode of the first transistor.
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公开(公告)号：US11657760B2
公开(公告)日：2023-05-23
申请号：US16889606
申请日：2020-06-01
Applicant: Samsung Display Co., Ltd.
Inventor： Jun Hyun Park , Bon Yong Koo , Yu Jin Lee , Kyung Hoon Chung
IPC: G09G3/3258 , G09G3/3233 , G09G3/3266 , G09G3/3275
CPC classification number: G09G3/3258 , G09G3/3233 , G09G3/3266 , G09G3/3275 , G09G2300/0426 , G09G2310/08 , G09G2320/0252
Abstract: A light emission driver includes a plurality of stages outputs a light emission control signal. Each of the stages includes an input circuit controlling voltages of a first node and a second node, an output circuit supplying a voltage of first power or a second power to an output terminal, a first signal processor controlling a voltage of a fourth node based on a signal supplied to a third input terminal and a voltage of a fifth node, a second signal processor controlling the voltage of the fourth node in response to the voltage of a third node, a first stabilizer limiting voltage drops of the first node and the second node, and a second stabilizer controlling an electrical connection between the third node and the first node in response to the voltage of the fourth node.
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公开(公告)号：US11514846B2
公开(公告)日：2022-11-29
申请号：US17467164
申请日：2021-09-03
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Min Jae Jeong , Kyung Bae Kim , Chong Chul Chai , Kyung Hoon Chung
IPC: G09G3/32 , H01L33/36 , H01L25/075 , H01L33/62
Abstract: A display device includes a light-emitting diode including a first conductivity-type semiconductor, an active layer, and a second conductivity-type semiconductor; a first voltage line to which a first voltage is applied; a second voltage line to which a second voltage is applied; a first transistor including a source electrode electrically connected to the first voltage line and a drain electrode electrically connected to a first electrode of the light-emitting diode and to the first conductivity-type semiconductor; a second transistor including a drain electrode electrically connected to a gate electrode of the first transistor and a source electrode electrically connected to a data line to apply a data signal; a capacitor electrically connected to the gate electrode of the first transistor and the first electrode; and a third transistor including a source electrode electrically connected to the second voltage line and a drain electrode electrically connected to the first electrode.
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公开(公告)号：US11430390B2
公开(公告)日：2022-08-30
申请号：US17313483
申请日：2021-05-06
Inventor： Min Jae Jeong , Joon Ho Lee , Kee Chan Park , Kyung Hoon Chung , Chong Chul Chai
IPC: G09G3/3266 , G09G3/3291
Abstract: A display device includes a scan write line for receiving a scan write signal, a first driving voltage line for receiving a first driving voltage, a first data line for receiving first data voltages, a second data line for receiving second data voltages, and a sub-pixel connected to the scan write line, the first data line, the second data line, and the first driving voltage line, wherein the sub-pixel includes a light emitting element connected to the first driving voltage line, a constant current generator configured to apply a driving current to the light emitting element according to a first data voltage among the first data voltages of the first data line, and a light emission period controller configured to control a light emission period of the light emitting element according to a second data voltage among the second data voltages of the second data line.
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公开(公告)号：US11069726B2
公开(公告)日：2021-07-20
申请号：US16262715
申请日：2019-01-30
Applicant: Samsung Display Co., Ltd.
Inventor： Hyun Joon Kim , Kyung Bae Kim , Kyung Hoon Chung , Mee Hye Jung
IPC: H01L33/62 , H01L27/15 , H01L33/36 , H01L25/075 , H01L33/18 , H01L27/12 , H01L33/38 , H01L25/16 , H01L33/00 , H01L33/20
Abstract: A method of manufacturing a display device, the method including providing a substrate, forming a first electrode, a second electrode spaced from the first electrode and in a same plane as the first electrode, a first alignment line connected to the first electrode, and a second alignment line connected to the second electrode on the substrate, self-aligning the plurality of light emitting elements by providing a solution containing a plurality of light emitting elements on the substrate, removing the first alignment line and the second alignment line from the substrate on which the plurality of light emitting elements are self-aligned, forming a first contact electrode electrically connecting one end of each light emitting element to the first electrode, and forming a second contact electrode electrically connecting an other end of each light emitting element to the second electrode.
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Patent Agency Ranking
公开(公告)号：US10857574B2
公开(公告)日：2020-12-08
申请号：US15991305
申请日：2018-05-29
Applicant: Samsung Display Co., Ltd.
Inventor： Myung Kyu Kim , Kyung Hoon Chung
Abstract: A mask cleaning apparatus includes: a mask holding unit configured to hold a mask; a light source unit configured to irradiate light onto the mask to remove a deposition material accumulated on a surface of the mask; and a material collecting unit configured to collect the deposition material removed from the mask, wherein the material collecting unit includes: a plurality of collecting cases corresponding to kinds of the deposition material; a rotating plate having a suction hole; and a plate driving unit configured to rotate the rotating plate to connect the suction hole to at least one of the collecting cases. Based on the irradiated light, different organic deposition materials may be collected for reuse.
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公开(公告)号：US11961461B2
公开(公告)日：2024-04-16
申请号：US18158347
申请日：2023-01-23
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Hyun Joon Kim , Kyung Hoon Chung
CPC classification number: G09G3/12 , G09G2300/0809 , G09G2320/0242
Abstract: A pixel circuit includes: a first transistor including a gate electrode connected to a first node, a source electrode connected to a first power line, and a drain electrode connected to a second power line; a light emitting element connected between the first transistor and the first or second power line; a second transistor connected between a data line and the first node, and including a gate electrode connected to a first scan line; a first capacitor connected between the first node and the source electrode of the first transistor; a third transistor connected between the first node and the first power line, and including a gate electrode connected to a second node; a fourth transistor connected between the second node and the data line, and including a gate electrode connected to a second scan line; and a second capacitor connected between the second node and a first control line.
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公开(公告)号：US11893926B2
公开(公告)日：2024-02-06
申请号：US18110549
申请日：2023-02-16
Applicant: Samsung Display Co., LTD.
Inventor： Byung Chang Yu , Hae Min Kim , Myunghoon Park , Dong-Hoon Lee , Kyung Hoon Chung
IPC: G09G3/32
CPC classification number: G09G3/32 , G09G2300/0842 , G09G2310/0267 , G09G2310/0275
Abstract: Embodiments provide an emissive display device including a driving transistor including a first electrode, a second electrode, and a driving gate electrode, a second transistor including a first electrode electrically connected to a data line, a transfer capacitor including a first transfer electrode electrically connected to a second electrode of the second transistor and a second transfer electrode electrically connected to the driving gate electrode; a fifth transistor electrically connecting the first electrode of the driving transistor and the driving gate electrode; a ninth transistor including a second electrode electrically connected to the second electrode of the driving transistor; and a light emitting diode including an anode and a cathode receiving an output current outputted to the second electrode of the driving transistor.
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公开(公告)号：US11817046B2
公开(公告)日：2023-11-14
申请号：US18058725
申请日：2022-11-23
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Min Jae Jeong , Kyung Bae Kim , Chong Chul Chai , Kyung Hoon Chung
IPC: G09G3/32 , H01L33/36 , H01L25/075 , H01L33/62
CPC classification number: G09G3/32 , H01L25/0753 , H01L33/36 , H01L33/62 , G09G2300/0426 , G09G2310/0278 , H01L2933/0016 , H01L2933/0066
Abstract: A display device includes a light-emitting diode including a first conductivity-type semiconductor, an active layer, and a second conductivity-type semiconductor; a first voltage line to which a first voltage is applied; a second voltage line to which a second voltage is applied; a first transistor including a source electrode electrically connected to the first voltage line and a drain electrode electrically connected to a first electrode of the light-emitting diode and to the first conductivity-type semiconductor; a second transistor including a drain electrode electrically connected to a gate electrode of the first transistor and a source electrode electrically connected to a data line to apply a data signal; a capacitor electrically connected to the gate electrode of the first transistor and the first electrode; and a third transistor including a source electrode electrically connected to the second voltage line and a drain electrode electrically connected to the first electrode.
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公开(公告)号：US11341878B2
公开(公告)日：2022-05-24
申请号：US16821706
申请日：2020-03-17
Applicant: Samsung Display Co., LTD.
Inventor： Hyun Joon Kim , Jun Ki Jeong , Kyung Hoon Chung , Kyung Bae Kim , Seung Chan Lee , Chong Chul Chai
IPC: G09G3/00
Abstract: A method of testing a display panel including a pixel coupled to first, second, and third power lines, a data line, scan lines, an emission control line, and a test line, the method includes: applying a first power supply voltage to the first power line; applying a test voltage having a turn-on voltage level to the second power line; applying a scan signal having a turn-on voltage level sequentially to the scan lines and an emission control signal having a turn-on voltage level to the emission control line; applying a gate signal to the test line to turn on a test transistor coupled between two electrode of a light emitting element included in the pixel; measuring a sensing voltage output through the data line; and determining whether the pixel is defective, based on a voltage level of the measured sensing voltage.
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