公开(公告)号：US10135019B2

公开(公告)日：2018-11-20

申请号：US15687290

申请日：2017-08-25

Applicant: LG Display Co., Ltd.

Inventor： Shinbok Lee ,  Taejoon Song ,  Namkook Kim ,  Soonsung Yoo ,  Hwankeon Lee

IPC: H01L51/52 ,  H01L51/56 ,  H01L27/32 ,  H01L51/00 ,  F21Y115/15

Abstract: A lighting apparatus using an organic light-emitting diode and a method of fabricating the same according to the present disclosure are characterized in that contact electrodes are formed by laser ablation and printing after an organic emissive material, a conductive film as a cathode, and passivation layers are deposited on the entire surface of a substrate. The lighting apparatus may be fabricated in a simplified manner without using an open mask (metal mask), which is a complicated tool, and may be useful especially in roll-to-roll manufacturing.

公开(公告)号：US10944078B2

公开(公告)日：2021-03-09

申请号：US16600862

申请日：2019-10-14

Applicant: LG Display Co., Ltd.

Inventor： Taejoon Song ,  Jongmin Kim

IPC: H01L51/52 ,  H01L27/32 ,  H01L51/56

Abstract: A lighting device is provided. The lighting device may include an organic light emitting diode arranged on one surface of a first substrate, the organic light emitting diode including a first electrode, an organic light emitting layer and a second electrode, and the first electrode is made of a transparent conductive material having a resistance value of 2,800-5,500Ω in each pixel, and has light scattering particles dispersed therein. Thus, even when a resistor of the organic light emitting layer is removed from a pixel due to a contact between the first electrode and the second electrode, it is possible to prevent an over current from being applied to the corresponding pixel through a resistor of the first electrode.

公开(公告)号：US10418571B2

公开(公告)日：2019-09-17

申请号：US15709103

申请日：2017-09-19

Applicant: LG DISPLAY CO., LTD.

Inventor： Taejoon Song ,  Namkook Kim ,  Shinbok Lee ,  Soonsung Yoo ,  Hwankeon Lee

IPC: H01L29/18 ,  H01L21/00 ,  H01L51/00 ,  H01L51/52

Abstract: A lighting apparatus of the present disclosure may transport a film formed with a plurality of lighting apparatuses between rolls, and place a mask on an entire surface of the film to deposit an organic light emitting material in a state in which a part of the film is blocked to form an organic light emitting layer, and then deposit a metal layer by the same mask to form a second electrode, wherein the organic light emitting layer and the second electrode are not formed in a region where a pad is formed by the mask to open the pad and connect an external signal source thereto. The first electrode may be connected to a first pad and the second electrode may be connected to a second pad to apply a voltage, wherein a part of the organic light emitting layer is laser-etched to form a contact portion, and the second electrode is electrically connected to the second pad.

公开(公告)号：US20190165297A1

公开(公告)日：2019-05-30

申请号：US16197301

申请日：2018-11-20

Applicant: LG DISPLAY CO., LTD.

Inventor： Kyu-Hwang Lee ,  Taejoon Song ,  Chulho Kim ,  Hwankeon Lee

IPC: H01L51/52 ,  H01L27/32 ,  G09G3/3225

Abstract: Disclosed herein is an OLED lighting apparatus which can achieve both improvement in reliability and reduction in manufacturing cost. In the OLED lighting apparatus, an encapsulation layer is disposed over the active area and the non-active area on a buffer layer, such that a pad disposed in the non-active area of the buffer layer can be stably secured by the encapsulation layer bonded thereto. Accordingly, upon tape automated bonding between an FPCB substrate with a COF tape attached thereto and a via electrode, the COF tape does not directly contact the pad but contacts the via electrode connected to the pad, particularly a connection terminal of the via electrode disposed on an upper surface of the encapsulation layer, thereby establishing electrical connection between the FPCB substrate and the via electrode. In this way, the connection terminal of the via electrode is electrically connected to the FPCB substrate via the COF tape, whereby a signal from the outside can be applied to the pad connected to the via electrode.

公开(公告)号：US10079361B2

公开(公告)日：2018-09-18

申请号：US15699840

申请日：2017-09-08

Applicant: LG Display Co., Ltd.

Inventor： Taejoon Song ,  Namkook Kim ,  Shinbok Lee ,  Soonsung Yoo ,  Hwankeon Lee

IPC: H01L51/10 ,  H01L51/52 ,  H01L51/00 ,  H01L51/56

CPC classification number: H01L51/5246 ,  H01L27/3276 ,  H01L27/3288 ,  H01L27/329 ,  H01L51/0017 ,  H01L51/0021 ,  H01L51/0097 ,  H01L51/102 ,  H01L51/5203 ,  H01L51/56 ,  H01L2251/5338 ,  H01L2251/5361

Abstract: A lighting apparatus using an organic light-emitting diode and a method of fabricating the same are characterized in that an organic emissive material and a conductive film used as a cathode are deposited on the entire surface of a substrate, and then an organic emissive layer in a lighting area and contact areas becomes separated (disconnected or cut) by laser ablation, simultaneously with the formation of a contact hole for contact with an anode. Next, cathode contact and encapsulation processes are performed using an adhesive containing conductive particles and a metal film. This simplifies the fabrication process of the lighting apparatus without using an open mask (metal mask), which is a complicated tool, thus making it useful especially in roll-to-roll manufacturing.

公开(公告)号：US11152446B2

公开(公告)日：2021-10-19

申请号：US16203285

申请日：2018-11-28

Applicant: LG Display Co., Ltd.

Inventor： Kyu-Hwang Lee ,  Taejoon Song ,  Chulho Kim ,  Jongmin Kim

IPC: H01L27/32 ,  H01L51/50 ,  H01L51/52 ,  H01L51/56

Abstract: The present application relates to an OLED panel for a lighting device and a method of manufacturing the same. An OLED panel for a lighting device includes: a substrate; a auxiliary wiring pattern having a plurality of wiring lines disposed on the substrate; a first electrode disposed on the substrate where the auxiliary wiring pattern is disposed, and having a planarized upper surface; a passivation layer disposed on the first electrode and disposed at least in an area above the auxiliary wiring pattern; an OLED emission structure disposed on the first electrode; and a second electrode disposed on the OLED emission structure. In the OLED panel for a lighting device, luminance uniformity may be improved through a dual auxiliary wiring pattern, and the upper surface of the first electrode is planarized. Accordingly, the area of the passivation layer is reduced, and thus a light-emitting area may be increased.

公开(公告)号：US10971572B2

公开(公告)日：2021-04-06

申请号：US16209055

申请日：2018-12-04

Applicant: LG Display Co., Ltd.

Inventor： Kyu-Hwang Lee ,  Taejoon Song ,  Chulho Kim ,  Jungeun Lee ,  Shin-Bok Lee ,  Taeok Kim

IPC: H01L51/52 ,  H01L27/32 ,  H01L51/56 ,  H01L41/04 ,  H01L41/09 ,  H01L51/00

Abstract: A flexible OLED panel for a lighting device according to the present invention includes a substrate which is made of a polymer material and has a first light extracting pattern provided on a lower surface thereof; an auxiliary wiring pattern which is arranged on the substrate; a first electrode which is arranged on the substrate on which the auxiliary wiring pattern is arranged; a passivation layer which is arranged on the first electrode, at least on an area on which the auxiliary wiring pattern is arranged; an OLED light emitting structure which is arranged on the first electrode on which the passivation layer is arranged; a second electrode which is arranged on the OLED light emitting structure; and an encapsulation layer which is arranged on the second electrode.

公开(公告)号：US10770674B2

公开(公告)日：2020-09-08

申请号：US16197301

申请日：2018-11-20

Applicant: LG DISPLAY CO., LTD.

Inventor： Kyu-Hwang Lee ,  Taejoon Song ,  Chulho Kim ,  Hwankeon Lee

IPC: H01L51/52 ,  G09G3/3225 ,  H01L27/32 ,  H01L51/00

Abstract: Disclosed herein is an OLED lighting apparatus which can achieve both improvement in reliability and reduction in manufacturing cost. In the OLED lighting apparatus, an encapsulation layer is disposed over the active area and the non-active area on a buffer layer, such that a pad disposed in the non-active area of the buffer layer can be stably secured by the encapsulation layer bonded thereto. Accordingly, upon tape automated bonding between an FPCB substrate with a COF tape attached thereto and a via electrode, the COF tape does not directly contact the pad but contacts the via electrode connected to the pad, particularly a connection terminal of the via electrode disposed on an upper surface of the encapsulation layer, thereby establishing electrical connection between the FPCB substrate and the via electrode. In this way, the connection terminal of the via electrode is electrically connected to the FPCB substrate via the COF tape, whereby a signal from the outside can be applied to the pad connected to the via electrode.

公开(公告)号：US10608074B2

公开(公告)日：2020-03-31

申请号：US16184671

申请日：2018-11-08

Applicant: LG DISPLAY CO., LTD.

Inventor： Taeok Kim ,  Taejoon Song

IPC: H01L27/32 ,  H01L51/52 ,  H01L51/56

Abstract: An OLED panel for a lighting device is provided. The OLED panel for a lighting device may include a substrate divided into a light emitting area and a pad area formed outside of the light emitting area; an auxiliary wiring pattern disposed on the substrate, the auxiliary wiring pattern having a taper-shaped cross-section whose width is gradually narrower toward an upper portion thereof; a first electrode disposed on the substrate on which the auxiliary wiring pattern is disposed; a passivation layer disposed on the first electrode within an area where the auxiliary wiring pattern disposed; an OLED light emitting structure disposed on the first electrode on which the passivation layer is disposed; a second electrode disposed on the OLED light emitting structure; and an encapsulating layer disposed on the second electrode, and the passivation layer may have a cross-section corresponding to a cross-section of the auxiliary wiring pattern in the light emitting area. The OLED panel for a lighting device may have a wide light emitting area by reducing a passivation area on the auxiliary wiring pattern.

公开(公告)号：US10483495B2

公开(公告)日：2019-11-19

申请号：US16030287

申请日：2018-07-09

Applicant: LG Display Co., Ltd.

Inventor： Taejoon Song ,  Jongmin Kim

IPC: H01L51/52 ,  H01L27/32 ,  H01L51/56

Abstract: A lighting device is provided. The lighting device may include an organic light emitting diode arranged on one surface of a first substrate, the organic light emitting diode including a first electrode, an organic light emitting layer and a second electrode, and the first electrode is made of a transparent conductive material having a resistance value of 2,800-5,500Ω in each pixel, and has light scattering particles dispersed therein. Thus, even when a resistor of the organic light emitting layer is removed from a pixel due to a contact between the first electrode and the second electrode, it is possible to prevent an over current from being applied to the corresponding pixel through a resistor of the first electrode.