公开(公告)号：US12254809B2

公开(公告)日：2025-03-18

申请号：US18422988

申请日：2024-01-25

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung Hwan Hwang ,  Hyun Joon Kim ,  Kye Uk Lee ,  Jun Ki Jeong

IPC: G09G3/20 ,  G09G3/32

Abstract: A display device includes PAM data lines receiving PAM and PWM data voltages, and sub-pixels connected to the PAM and PWM data lines. A sub-pixel includes a light emitting element, a first pixel driver to supply a control current according to one of the PAM data voltages to a node, a second pixel driver to generate a driving current according to one of the PWM data voltages, and a third pixel driver to adjust a period during which the driving current is supplied to the light emitting element according to a voltage of the node. A peak current value of the driving current when the sub-pixel emits a light corresponding to a low gray level region is smaller than a peak current value of the driving current when the sub-pixel emits a light corresponding to a high gray level region higher than the low gray level region.

公开(公告)号：US12249273B2

公开(公告)日：2025-03-11

申请号：US18498018

申请日：2023-10-30

Applicant: Samsung Display Co., LTD.

Inventor： Jung Hwan Hwang ,  Hyun Joon Kim ,  Kye Uk Lee ,  Jun Ki Jeong ,  Sang Jin Jeon

IPC: G09G3/32

Abstract: A display device includes connection lines, pulse amplitude modulation (PAM) data lines configured to receive pulse width modulation (PWM) data voltages, PWM data lines configured to receive the PWM data voltages, a first connection control line configured to receive a first connection control signal, a second connection control line configured to receive a second connection control signal, subpixels connected to the PWM data lines and the PAM data lines, and a first demultiplexer (demux) unit configured to connect the connection lines to the PAM data lines or to the PWM data lines according to the first connection control signal and the second connection control signal.

公开(公告)号：US12165568B2

公开(公告)日：2024-12-10

申请号：US18353817

申请日：2023-07-17

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung Hwan Hwang ,  Hyun Joon Kim ,  Kye Uk Lee ,  Sang Jin Jeon ,  Jun Ki Jeong

IPC: G09G3/22 ,  G09G3/3208 ,  G09G3/3233 ,  G09G3/3241 ,  G09G3/36

Abstract: A display device includes a first pixel driver connected to a sweep line, the first pixel driver generating a control current based on a first data voltage, a second pixel driver connected to a scan control line, the second pixel driver generating a driving current based on a second data voltage and controlling a period for which the driving current flows, based on the control current, and a light-emitting element connected to the second pixel driver to receive the driving current. The first pixel driver includes a first transistor generating the control current based on the first data voltage, a second transistor providing the first data voltage to a first electrode of the first transistor based on a scan write signal, and a first capacitor including a first capacitor electrode connected to a gate electrode of the first transistor, and a second capacitor electrode connected to the sweep line.

公开(公告)号：US12136381B2

公开(公告)日：2024-11-05

申请号：US17842927

申请日：2022-06-17

Applicant: Samsung Display Co., LTD.

Inventor： Jun Ki Jeong ,  Hyun Joon Kim ,  Kye Uk Lee ,  Sang Jin Jeon ,  Jung Hwan Hwang

IPC: G09G3/32

Abstract: A display device includes a display area which displays an image, and a non-display area disposed around the display area and including a pad part. The display area includes pixels of a first pixel row which are pixels arranged in a first direction along the first pixel row, pixels of a second pixel row, which are pixels arranged in the first direction along the second pixel row next to the first pixel row, and pixel circuits of a first circuit row which are pixel circuits arranged in the first direction along the first circuit row, where the pixel circuits of the first circuit row are electrically connected to the pixels of the first pixel row, respectively. The first pixel row and the first circuit row are spaced apart from each other with the second pixel row interposed therebetween.

公开(公告)号：US12080724B2

公开(公告)日：2024-09-03

申请号：US17737707

申请日：2022-05-05

Applicant: Samsung Display Co., LTD.

Inventor： Jun Ki Jeong ,  Hyun Joon Kim ,  Mee Hye Jung

IPC: H01L27/12 ,  G09G3/32 ,  H01L25/16 ,  H01L23/00 ,  H01L33/62

CPC classification number: H01L27/1248 ,  G09G3/32 ,  H01L25/167 ,  G09G2300/0439 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0243 ,  G09G2310/08 ,  G09G2330/04 ,  G09G2330/12 ,  H01L24/05 ,  H01L33/62 ,  H01L2224/05027 ,  H01L2224/05073 ,  H01L2224/05562 ,  H01L2224/05573

Abstract: A light emitting display device includes a pixel circuit unit, a data distribution unit, a plurality of signal generating units, a unit light emitting diode, and a dummy opening. The pixel circuit unit is configured to generate an output current. The data distribution unit is configured to apply a data voltage to the pixel circuit unit through a data line. The plurality of signal generating units are respectively configured to apply a scan signal and a light emission control signal to the pixel circuit unit through a plurality of signal lines. The unit light emitting diode is configured to receive the output current of the pixel circuit unit and is attached to the pixel circuit unit. The dummy opening is formed in the region where the pixel circuit unit, the data distribution unit, and a plurality of signal generating units are not positioned.

公开(公告)号：US11908392B2

公开(公告)日：2024-02-20

申请号：US18072507

申请日：2022-11-30

Applicant: Samsung Display Co., LTD.

Inventor： Jun Ki Jeong ,  Hyun Joon Kim ,  Jung Hwan Hwang

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0852 ,  G09G2320/0233

Abstract: A display device including: a first transistor configured to control a control current based on a voltage of a first node; a second transistor configured to electrically connect a second node that is a first electrode of the first transistor to a first data line in response to a scan write signal; a third transistor configured to control a driving current based on a voltage of a third node; a fourth transistor configured to electrically connect a fourth node that is a first electrode of the third transistor to a second data line in response to the scan write signal; a fifth transistor configured to control the driving current based on a voltage of a fifth node having received the control current; and a light emitting element configured to receive the driving current, wherein the fifth transistor is of a different type from that of the first to fourth transistors.

公开(公告)号：US11705051B2

公开(公告)日：2023-07-18

申请号：US17849277

申请日：2022-06-24

Applicant: Samsung Display Co., LTD.

Inventor： Jung Hwan Hwang ,  Hyun Joon Kim ,  Kye Uk Lee ,  Sang Jin Jeon ,  Jun Ki Jeong

IPC: G09G3/3241 ,  G09G3/36 ,  G09G3/3208 ,  G09G3/3233 ,  G09G3/22

CPC classification number: G09G3/22 ,  G09G3/3208 ,  G09G3/3233 ,  G09G3/3241 ,  G09G3/3648 ,  G09G2330/025 ,  G09G2330/028

Abstract: A display device includes a first pixel driver connected to a sweep line, the first pixel driver generating a control current based on a first data voltage, a second pixel driver connected to a scan control line, the second pixel driver generating a driving current based on a second data voltage and controlling a period for which the driving current flows, based on the control current, and a light-emitting element connected to the second pixel driver to receive the driving current. The first pixel driver includes a first transistor generating the control current based on the first data voltage, a second transistor providing the first data voltage to a first electrode of the first transistor based on a scan write signal, and a first capacitor including a first capacitor electrode connected to a gate electrode of the first transistor, and a second capacitor electrode connected to the sweep line.

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：US09728150B2

公开(公告)日：2017-08-08

申请号：US14690130

申请日：2015-04-17

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jun Ki Jeong ,  Kwang Chul Jung ,  Il Gon Kim

IPC: G09G5/00 ,  G09G3/36 ,  G02F1/1362

CPC classification number: G09G3/3666 ,  G02F1/136286 ,  G09G2300/0408 ,  G09G2300/0426 ,  G09G2310/0278 ,  G09G2310/0281 ,  G09G2360/12

Abstract: A display panel includes a display unit with a first area and a second area, first gate lines on the first area and the second area that extend in a first direction in the first area and in a third direction in the second area, while sections extending in the first direction and in a second direction are repeated, and second gate lines on the second area that extend in the third direction while sections extending in the first direction and in the second direction are repeated. The second gate line includes a plurality of sub gate lines that extend in the second direction in the second area, and one end of each of the plurality of sub gate lines is connected to one end of each of the plurality of second gate lines.

公开(公告)号：US12198636B2

公开(公告)日：2025-01-14

申请号：US18313601

申请日：2023-05-08

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyun Joon Kim ,  Jun Ki Jeong

IPC: G09G3/3266

Abstract: A pixel of a light-emitting display device includes a capacitor, a first transistor, a second transistor including a gate receiving a gate writing signal, a third transistor including a gate receiving a scan signal, a fourth transistor including a gate receiving a gate initialization signal, a fifth transistor including a gate receiving a first emission signal, a sixth transistor including a gate receiving a second emission signal, and a light-emitting diode. The scan signal and the gate writing signal may be provided at a first frequency, and the first emission signal, the second emission signal and the gate initialization signal may be provided at a second frequency higher than the first frequency.