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.

公开(公告)号：US12294014B2

公开(公告)日：2025-05-06

申请号：US17281500

申请日：2019-06-11

Applicant: Samsung Display Co., Ltd.

Inventor： Chong Chul Chai ,  Hyun Joon Kim ,  Hyun Min Cho ,  Kyung Bae Kim ,  Min Jae Jeong

IPC: H01L27/15 ,  B82B3/00 ,  H01L33/24 ,  H01L33/38 ,  H01L33/40 ,  H01L33/44

Abstract: A light emitting device comprises: a substrate; a first electrode on the substrate, the first electrode having holes, and having inclined surfaces along the peripheries of the holes; second electrodes on the substrate, each of which is in a respective one of the holes of the first electrode; and light emitting elements between the first electrode and the second electrodes, the light-emitting elements being electrically connected to the first electrode and the second electrodes.

公开(公告)号：US12243971B2

公开(公告)日：2025-03-04

申请号：US17683889

申请日：2022-03-01

Applicant: Samsung Display Co., LTD.

Inventor： Ki Hyun Pyo ,  Jin Seon Kwak ,  Kyung Bae Kim ,  Yeon Kyung Kim ,  Ji Hye Lee

IPC: H01L33/62 ,  H01L33/38

Abstract: A display device according to some embodiments includes a substrate, a first power line extending in a first direction on the substrate, and configured to transmit a first alignment signal or a first driving voltage, a second power line extending in the first direction on the substrate, and configured to transmit a second alignment signal or a second driving voltage, a first electrode extending in a second direction that is substantially perpendicular to the first direction, configured to receive the first alignment signal or the first driving voltage, and electrically connected to the first power line, a second electrode spaced apart from the first electrode, extending in the second direction, configured to receive the second alignment signal or the second driving voltage, and electrically connected to the second power line, and a light emitting element between the first electrode and the second electrode.

公开(公告)号：US12223888B2

公开(公告)日：2025-02-11

申请号：US18508214

申请日：2023-11-13

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Min Jae Jeong ,  Kyung Bae Kim ,  Chong Chul Chai ,  Kyung Hoon Chung

IPC: G09G3/32 ,  H01L25/075 ,  H01L33/36 ,  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.

公开(公告)号：US12131702B2

公开(公告)日：2024-10-29

申请号：US18107659

申请日：2023-02-09

Applicant: Samsung Display Co., LTD.

Inventor： Ji Hye Lee ,  Kyung Bae Kim ,  Ki Hyun Pyo ,  Sung Chul Hong

IPC: G09G3/3233 ,  H01L25/16 ,  H01L27/12

CPC classification number: G09G3/3233 ,  H01L25/167 ,  H01L27/124 ,  G09G2300/0426 ,  G09G2300/0452 ,  G09G2300/0819 ,  G09G2300/0842

Abstract: A display device includes a pixel including a first sub-pixel to third sub-pixels, each arranged in a first direction and emitting light of a color, a first to third vertical power lines, each extending in a second direction different from the first direction, overlapping the first to third sub-pixels, respectively, and transmitting first to third powers, respectively, a first to third horizontal power lines, each extending in the first direction and electrically connected to the first to third vertical power lines through a contact hole, respectively. Voltages of the first power, the second power, and the third power are different from each other.

公开(公告)号：US12100699B2

公开(公告)日：2024-09-24

申请号：US17476948

申请日：2021-09-16

Applicant: Samsung Display Co., LTD.

Inventor： Kyung Bae Kim ,  No Kyung Park ,  Chong Chul Chai ,  Do Yeong Park

IPC: H01L25/16 ,  H01L33/38 ,  H01L33/62

CPC classification number: H01L25/167 ,  H01L33/38 ,  H01L33/62

Abstract: A display device includes a first electrode extended in a first direction, a second electrode spaced apart from the first electrode in a second direction and extended in the first direction, a first insulating layer on the first and second electrodes, light-emitting elements on the first insulating layer, each having at least an end disposed on the first electrode or the second electrode, a second insulating layer disposed on the light-emitting elements and extended in the first direction, and a first connection electrode disposed on the first electrode and electrically contacting the light-emitting elements, a second connection electrode disposed on the second electrode and electrically contacting the light-emitting elements. Each of the first and second connection electrodes includes a main portion electrically contacting the light-emitting elements, and a subsidiary portion having a width smaller than a width of the main portion and electrically connected to the main portion.

公开(公告)号：US12015047B2

公开(公告)日：2024-06-18

申请号：US17210959

申请日：2021-03-24

Applicant: Samsung Display Co., LTD.

Inventor： No Kyung Park ,  Kyung Bae Kim ,  Do Yeong Park

IPC: H01L27/15 ,  H01L33/38 ,  H01L33/50 ,  H01L33/62

CPC classification number: H01L27/156 ,  H01L33/382 ,  H01L33/505 ,  H01L33/62

Abstract: A display device includes pixels including subpixels, electrodes spaced apart from each other in a first direction, extending in a second direction, and disposed in the subpixels, light emitting elements in the subpixels and on the electrodes, and contact electrodes electrically contacting the light emitting elements and the electrodes. The subpixels each includes an emission area including the light emitting elements, and a sub area spaced apart from the emission area. The pixels each includes a first subpixel including a first emission area and a sub area on a first side of the first emission area, and a second subpixel which is disposed on a first side of the first subpixel and includes a second emission area and a sub area disposed on a second side of the second emission area. The sub area of the second subpixel is disposed side by side with the first emission area.

公开(公告)号：US11908845B2

公开(公告)日：2024-02-20

申请号：US17003428

申请日：2020-08-26

Applicant: Samsung Display Co., Ltd.

Inventor： Min Kyu Woo ,  Kyung Bae Kim ,  Chong Chul Chai

IPC: H01L29/12 ,  H01L29/786 ,  H01L25/16 ,  H01L33/62 ,  H01L33/60 ,  H01L33/44 ,  H01L33/20

CPC classification number: H01L25/167 ,  H01L33/62 ,  H01L33/20 ,  H01L33/44 ,  H01L33/60

Abstract: A display device includes: a base layer having a first area and a second area extending at least partially around a periphery of the first area; conductive patterns in the second area; an insulating layer over the conductive patterns in the second area; a first electrode and a second electrode on the insulating layer; and a plurality of light emitting elements between the first electrode and the second electrode in the first area and being connected to the first electrode and the second electrode. The first electrode and the second electrode are spaced apart from each other in the first area and are respectively connected to portions of the conductive patterns through contact openings penetrating the insulating layer. The light emitting elements do not overlap the conductive patterns and the insulating layer.

公开(公告)号：US11552063B2

公开(公告)日：2023-01-10

申请号：US17002258

申请日：2020-08-25

Applicant: Samsung Display Co., LTD.

Inventor： Kyung Bae Kim ,  Dong Hwan Kim ,  Mee Hye Jung ,  Jun Ki Jeong

IPC: H01L25/16 ,  H01L27/12 ,  H01L33/62 ,  H01L23/00

Abstract: A display device includes a substrate including a display area including pixel areas and a non-display area adjacent to the display area; and a pixel disposed in each of the pixel areas. The pixel includes a sub-electrode, a first conductive line, and a second conductive line on the substrate; a first insulating layer over the sub-electrode and the first and second conductive lines; first to fourth electrodes on the first insulating layer; a second insulating layer over the first and second electrodes to completely overlap the first and second electrodes, the second insulating layer exposing the third and fourth electrodes; light emitting elements between the first and second electrodes; a first contact electrode on the first electrode; and a second contact electrode on the second electrode.

公开(公告)号：US11271032B2

公开(公告)日：2022-03-08

申请号：US16901850

申请日：2020-06-15

Applicant: Samsung Display Co., Ltd.

Inventor： Yu Jin Lee ,  Kyung Bae Kim ,  Ji Hye Lee ,  Chong Chui Chai

IPC: H01L27/15 ,  H01L33/38 ,  H01L33/62

Abstract: A display device is provided. The display device includes a first electrode including a first electrode surface extending in a first direction and a second electrode surface connected to one end of the first electrode surface and extending in a second direction that is different from the first direction, a second electrode including a third electrode surface extending in the first direction and spaced apart from the first electrode surface and facing the first electrode surface, and a fourth electrode surface extending in the second direction and spaced apart from the second electrode surface and facing the second electrode surface, and at least one light emitting element between the first electrode and the second electrode and including a first light emitting element between the first electrode surface and the third electrode surface and a second light emitting element between the second electrode surface and the fourth electrode surface.