公开(公告)号：US20220206529A1

公开(公告)日：2022-06-30

申请号：US17542586

申请日：2021-12-06

Applicant: LG DISPLAY CO., LTD.

Inventor： Jieun LEE ,  NohJin MYUNG ,  Eun ROH

IPC: G06F1/16

Abstract: A foldable display device includes a display panel including a folding area and a non-folding area, and a support substrate disposed under the display panel, the support substrate includes a first metal sheet including a plurality of wavy curved portions and a first planarization layer disposed on the first metal sheet, and the support substrate includes a second metal sheet disposed on the first planarization layer and having a planar surface shape and a second planarization layer disposed under the first metal sheet, therefore, since the support substrate integrated into a single layer is disposed under the display panel, folding properties of the display device may be improved, and an overall thickness of the display device may be decreased and a transfer of a pattern boundary or a folding area boundary can be minimized.

公开(公告)号：US20220206528A1

公开(公告)日：2022-06-30

申请号：US17534948

申请日：2021-11-24

Applicant: LG Display Co., Ltd.

Inventor： NohJin MYUNG ,  Wansoo LEE ,  Youngjoo PARK ,  Jieun LEE ,  Eun ROH

IPC: G06F1/16

Abstract: A foldable display device includes a display panel which includes a folding area and non-folding areas on some sides of the folding area, and a hinge unit which is disposed in an area corresponding to the folding area below the display panel to in-fold or out-fold the display panel. The hinge unit includes a plurality of rotary shafts and a plurality of coupling links disposed between the plurality of rotary shafts. Accordingly, the foldable display device can be bi-directionally (e.g., inwardly or outwardly) folded by the hinge unit with a simple structure. Further, a radius of curvature during the folding can be desirably changed by adjusting a component of the hinge unit, for example, a number of the plurality of rotary shafts and the plurality of coupling links, a cross-sectional length, and the like.

公开(公告)号：US20230029166A1

公开(公告)日：2023-01-26

申请号：US17839124

申请日：2022-06-13

Applicant: LG Display Co., Ltd.

Inventor： Youngjoo PARK ,  Eun ROH ,  Taehyoung KWAK

IPC: H01L51/52 ,  H01L51/00

Abstract: The present disclosure relates to a flexible display device, and more particularly a flexible display device includes a display panel, a back plate disposed below the display panel; and a plate bottom disposed below the back plate, and the back plate includes a base member and a hard coating layer disposed on at least one surface of the base member. The present disclosure is provide a flexible display device which minimizes dent or puncture failures and reduces a rigidity difference between the folding area and the non-folding area without including a plate top or an impact absorption layer to have excellent durability.

公开(公告)号：US20220189349A1

公开(公告)日：2022-06-16

申请号：US17534143

申请日：2021-11-23

Applicant: LG DISPLAY CO., LTD.

Inventor： Eun ROH ,  NohJin MYUNG ,  Jieun LEE

IPC: G09F9/30 ,  G09G3/00 ,  G02B1/14

Abstract: A flexible display device includes: a display panel including a folding area and a non-folding area; and a back plate which includes a base layer which supports the display panel, below the display panel and includes a plurality of grooves on a bottom surface corresponding to the folding area and a filler which is filled in at least a part of the plurality of grooves, and the filler includes a metal fiber. According to the exemplary embodiment of the present disclosure, components such as a plate top, a plate bottom, and a damping layer are not included, but a mechanical property such as impact resistance is satisfied and the thickness of the display device is minimized so that the folding characteristic and the reliability are significantly improved. Therefore, a flexible display device having a larger curvature than that of the related art may be easily implemented.

公开(公告)号：US20240223964A1

公开(公告)日：2024-07-04

申请号：US18513737

申请日：2023-11-20

Applicant: LG Display Co., Ltd.

Inventor： Eun ROH ,  NohJin MYUNG ,  SangWoo JIN ,  Seunghyun SUNG

IPC: H04R17/10 ,  H04R1/02 ,  H04R7/10

CPC classification number: H04R17/10 ,  H04R1/028 ,  H04R7/10 ,  H04R2307/023 ,  H04R2499/15

Abstract: A vibration apparatus includes a vibration member, a cover member, and a vibration generating part between the vibration member and the cover member. At least a portion of vibration generating part is configured to be one body with or directly connected with the vibration member.

公开(公告)号：US20220093867A1

公开(公告)日：2022-03-24

申请号：US17408015

申请日：2021-08-20

Applicant: LG DISPLAY CO., LTD.

Inventor： Heeyeon HWANG ,  Eun ROH ,  NohJin MYUNG ,  Seungkyu LEE ,  Jieun LEE

IPC: H01L51/00 ,  G09F9/30 ,  C08L101/12

Abstract: A flexible substrate, a method for preparing the same, and a display device including the same, and more particularly, to a flexible substrate including: a first polymer layer including a first polymer; second polymer layers which include second polymers and are located above and below the first polymer layer; and first interfacial crosslinked layers which are located between the first polymer layer and the second polymer layers and include a first crosslinked polymer having a network structure in which the first polymer and the second polymer are crosslinked, in which the stiffness of the first polymer layer is higher than the stiffness of the second polymer layer and the softness of the second polymer layer is higher than the softness of the first polymer layer, a method for preparing the same, and a display device including the same.

公开(公告)号：US20240080629A1

公开(公告)日：2024-03-07

申请号：US18387828

申请日：2023-11-07

Applicant: LG Display Co., Ltd.

Inventor： Giyoun KIM ,  Eun ROH

IPC: H04R17/00 ,  H04R1/02

CPC classification number: H04R17/00 ,  H04R1/028 ,  H05K5/0018

Abstract: An apparatus includes a display member configured to display an image, a front member at a front surface of the display member, a vibration apparatus at a rear surface of the display member, and an adhesive member between the display member and the front member, the adhesive member including a piezoelectric material.

公开(公告)号：US20230200204A1

公开(公告)日：2023-06-22

申请号：US17984965

申请日：2022-11-10

Applicant: LG Display Co., Ltd.

Inventor： MinHo LEE ,  Eun ROH ,  Changwoo CHUN ,  Giyoun KIM ,  Sejin JANG ,  Minwan KIM ,  Yeonjae JEONG

IPC: H01L51/00 ,  H01L51/52 ,  G06F1/16

CPC classification number: H01L51/0048 ,  H01L51/0097 ,  H01L51/5246 ,  G06F1/1652

Abstract: The present disclosure relates to a flexible display device, and according to an aspect of the present disclosure, a flexible display device includes a display panel including a folding area and a non-folding area; a back plate which is disposed below the display panel and supports the display panel; and a bottom plate which is disposed below the back plate and includes a plurality of grooves so as to correspond to the folding area, and a plurality of nano helix structures disposed so as to correspond to the plurality of grooves. Therefore, the flexible display device forms a groove pattern in the bottom plate, and includes a nano helix structure in each of the plurality of grooves, to effectively relieve the folding stress and reduce the visibility of the pattern, finally an appearance quality may be improved.

公开(公告)号：US20230200110A1

公开(公告)日：2023-06-22

申请号：US17980219

申请日：2022-11-03

Applicant: LG Display Co., Ltd.

Inventor： SangHoon OH ,  NohJin MYUNG ,  Seungkyu LEE ,  Jieun LEE ,  Eun ROH ,  Heeyeon HWANG

IPC: H01L51/52

CPC classification number: H01L51/5237 ,  H01L2251/5338

Abstract: Provided is a display device. The display device includes a display panel; a support substrate supporting the display panel below the display panel and including a plurality of opening patterns; and an adhesive layer which is disposed on the support substrate and includes a plurality of first areas provided so as to correspond to each of the plurality of opening patterns and a second area enclosing the plurality of first areas and having a Young's modulus lower than that of the plurality of first areas. Each of the first area is larger than the corresponding opening pattern.

公开(公告)号：US20240165665A1

公开(公告)日：2024-05-23

申请号：US18384903

申请日：2023-10-30

Applicant: LG DISPLAY CO., LTD.

Inventor： SangWoo JIN ,  Yong-Su HAM ,  Minji KIM ,  Eun ROH

IPC: B06B1/06 ,  B06B1/02

CPC classification number: B06B1/0618 ,  B06B1/0207

Abstract: A vibration apparatus includes a vibration layer including a piezoelectric material, a first electrode layer at a first surface of the vibration layer, a second electrode layer at a second surface of the vibration layer different from the first surface, and a discharge member electrically connected to the first electrode layer and the second electrode layer.