公开(公告)号：US20240112626A1

公开(公告)日：2024-04-04

申请号：US18528761

申请日：2023-12-04

Applicant: Samsung Display Co., LTD.

Inventor： Jung Hwan HWANG ,  Hyun Joon KIM ,  Kye Uk LEE ,  Sang Jin JEON ,  Jun Ki JEONG

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2320/0633

Abstract: A display device includes a scan write line, a PWM emission line, a PAM emission line, a sweep signal line, a first data line, a second data line, and a subpixel connected thereto, and including a light emitting element, a first pixel driver to supply a control current to a node according to the first data voltage in response to the PWM emission signal, a second pixel driver to generate a driving current according to the second data voltage in response to the PWM emission signal, and a third pixel driver to supply the driving current to the light emitting element according to the PAM emission signal and a voltage of the node, wherein the PWM emission signal includes a plurality of PWM pulses, the PAM emission signal includes a plurality of PAM pulses, and a number of the PWM pulses is greater than a number of the PAM pulses.

公开(公告)号：US20240008327A1

公开(公告)日：2024-01-04

申请号：US18362933

申请日：2023-07-31

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jun Hyun PARK ,  Jang Mi KANG ,  Hyun Joon KIM ,  Hae Min KIM ,  Min Jae JEONG

IPC: H10K59/131 ,  G09G3/3233 ,  H10K50/813 ,  H10K59/122 ,  H10K59/35

CPC classification number: H10K59/131 ,  G09G3/3233 ,  H10K50/813 ,  G09G2300/0809 ,  H10K59/352 ,  G09G2300/0452 ,  H10K59/122

Abstract: A light emitting diode display device includes: a pixel circuit; a data line connected to the pixel circuit to transmit a data voltage; an anode on the pixel circuit and the data line; an emission layer on the anode; and a cathode on the emission layer. The anode includes a first anode and a second anode, and the data line extends across the first anode and the second anode.

公开(公告)号：US20230268329A1

公开(公告)日：2023-08-24

申请号：US17984104

申请日：2022-11-09

Applicant: Samsung Display Co., LTD.

Inventor： Hyun Joon KIM ,  Jung Hwan HWANG ,  Kye Uk LEE ,  Sang Jin JEON

IPC: H01L25/16 ,  H01L33/50 ,  H01L27/12

CPC classification number: H01L25/167 ,  H01L27/124 ,  H01L33/50

Abstract: A display device includes a substrate including an emission area and a non-emission area, a pixel circuit layer above the substrate, and including a transistor and a signal line in the non-emission area, and a color conversion pattern in the emission area, a light emitting element above the color conversion pattern, and electrically connected to the transistor, an insulating layer covering the light emitting element, and a pad above the insulating layer, and electrically connected to the signal line, wherein the color conversion pattern is configured to convert a wavelength band of light incident from the light emitting element.

公开(公告)号：US20230246147A1

公开(公告)日：2023-08-03

申请号：US17964540

申请日：2022-10-12

Applicant: Samsung Display Co., LTD.

Inventor： Seung Lyong BOK ,  Hyun Joon KIM

IPC: H01L33/62 ,  H01L33/38 ,  H01L27/15 ,  H01L25/075 ,  G09F9/302 ,  G09F9/33

CPC classification number: H01L33/62 ,  G09F9/33 ,  G09F9/3026 ,  H01L25/0753 ,  H01L27/156 ,  H01L33/382

Abstract: A display device includes a plurality of sub-pixels, wherein a sub-pixel of the plurality of sub-pixels includes: a first pad electrode and a second pad electrode on the substrate and spaced from each other in a plan view; a light emitting device on the first pad electrode and the second pad electrode; and a first inspection transistor overlapping the first pad electrode in a thickness direction of the substrate, wherein the first inspection transistor overlaps the light emitting device in the thickness direction of the substrate.

公开(公告)号：US20230237954A1

公开(公告)日：2023-07-27

申请号：US17979064

申请日：2022-11-02

Applicant: Samsung Display Co., LTD.

Inventor： Kye Uk LEE ,  Jung Hwan HWANG ,  Hyun Joon KIM

IPC: G09G3/32 ,  H01L25/075 ,  H01L27/12 ,  H01L33/62

CPC classification number: G09G3/32 ,  H01L25/0753 ,  H01L27/1244 ,  H01L33/62 ,  G09G2300/0408 ,  G09G2300/0413 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2300/0871 ,  G09G2320/02 ,  G09G2310/0202 ,  G09G2310/0272 ,  G09G2330/02 ,  G09G2330/12 ,  G09G2320/064

Abstract: A display device includes a substrate including a display area in which a plurality of sub-pixels are disposed, a plurality of anode electrodes respectively connected to the plurality of sub-pixels, and a cathode electrode connected to the plurality of sub-pixels and spaced apart from each of the plurality of anode electrodes. Each of the plurality of anode electrodes is disposed closer to the substrate than the cathode electrode by a height difference compensation part.

公开(公告)号：US20230196986A1

公开(公告)日：2023-06-22

申请号：US18073311

申请日：2022-12-01

Applicant: Samsung Display Co., Ltd.

Inventor： Byung Chang YU ,  Hyun Joon KIM ,  Hae Min KIM ,  Myung Hoon PARK ,  Dong Hoon LEE

IPC: G09G3/32 ,  G09G3/3233

CPC classification number: G09G3/32 ,  G09G3/3233 ,  G09G2310/0275 ,  G09G2310/0267 ,  G09G2300/0852 ,  G09G2330/021 ,  G09G2320/0233

Abstract: A pixel and a display device including the same are disclosed. The pixel includes a light emitting element, first through seventh transistors, and a first capacitor. The first transistor is connected between first and second nodes. The second transistor is connected between a data line and a fourth node and configured to be turned on by a first scan signal. The third transistor is connected between the first node and a third node and configured to be turned on by a second scan signal. The fourth transistor is connected between the fourth node and a third power line and configured to be turned on by a third scan signal. The fifth transistor is connected between the third node and the third power line and configured to be turned on by a fourth scan signal. The sixth transistor is connected between the first node and a fifth node and configured to be turned off by an emission control signal. The seventh transistor is connected between the second node and the second power line and configured to be turned off in response to the emission control signal. The first capacitor is connected between the third and fourth nodes.

公开(公告)号：US20230154372A1

公开(公告)日：2023-05-18

申请号：US17810141

申请日：2022-06-30

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung Hwan HWANG ,  Hyun Joon KIM ,  Kye Uk LEE ,  Jun Ki JEONG

IPC: G09G3/20 ,  G09G3/32

CPC classification number: G09G3/2011 ,  G09G3/32 ,  G09G2310/08 ,  G09G2310/027 ,  G09G2300/0819 ,  G09G2300/0426 ,  G09G2320/0242

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：US20230120477A1

公开(公告)日：2023-04-20

申请号：US17941990

申请日：2022-09-09

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：US20220310579A1

公开(公告)日：2022-09-29

申请号：US17841247

申请日：2022-06-15

Applicant: Samsung Display Co. Ltd.

Inventor： Seung Chan LEE ,  Gun Hee KIM ,  Sang Ho PARK ,  Ju Won YOON ,  Joo Hee JEON ,  Hyun Joon KIM

IPC: H01L25/18 ,  H01L25/00 ,  H01L27/32 ,  H01L51/00

Abstract: A display device and a method for fabricating the same. The display device includes a substrate including a circuit layer and a first pad unit; an auxiliary substrate disposed below the substrate and comprising a driving circuit and a second pad unit; a light-emitting unit disposed on the circuit layer; and a connection electrode in contact with a side surface of the substrate and electrically connecting the first pad unit with the second pad unit. The method includes forming a circuit layer and a first pad unit on a first surface of a substrate; forming a driving circuit and a second pad unit on a fourth surface of an auxiliary substrate; and attaching a second surface of the substrate opposite the first surface to a third surface of the auxiliary substrate opposite the fourth surface.

公开(公告)号：US20220277677A1

公开(公告)日：2022-09-01

申请号：US17749690

申请日：2022-05-20

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.