公开(公告)号：US20240268161A1

公开(公告)日：2024-08-08

申请号：US18490891

申请日：2023-10-20

Applicant: Samsung Display Co., LTD.

Inventor： Seung Bo SHIM ,  Hyo Jung KIM ,  Ji Hyeon SON ,  Jeong Yong LEE ,  Yoo Young PARK ,  Ji Myoung SEO

IPC: H10K59/123 ,  H01L29/786 ,  H10K59/12 ,  H10K71/16 ,  H10K71/60

CPC classification number: H10K59/123 ,  H01L29/7869 ,  H01L29/78696 ,  H10K59/1201 ,  H10K71/166 ,  H10K71/60

Abstract: A display device includes a first transistor, a pixel electrode electrically connected to the first transistor, and a second transistor electrically connected to the first transistor. A nitrogen content per unit area of an active layer of the second transistor is greater than a nitrogen content per unit area of an active layer of the first transistor.

公开(公告)号：US20240331615A1

公开(公告)日：2024-10-03

申请号：US18493124

申请日：2023-10-24

Applicant: Samsung Display Co., LTD.

Inventor： Hyo Jung KIM ,  Seung Bo SHIM ,  Min Ji BAEK ,  Hye Sun SUNG ,  Ji Hyeon SON ,  Jeong Yong LEE

IPC: G09G3/32 ,  H01L25/075 ,  H01L25/16 ,  H01L27/12 ,  H01L33/38 ,  H01L33/62

CPC classification number: G09G3/32 ,  H01L25/0753 ,  H01L25/167 ,  H01L27/1237 ,  H01L33/382 ,  H01L33/62 ,  G09G2320/0247 ,  G09G2320/0257 ,  H01L2933/0016

Abstract: A display device includes a first layer disposed on a base layer and including a first gate electrode, a first gate insulating layer, and an active layer, and a second layer disposed on the first layer and including a second gate electrode, a second gate insulating layer, and the active layer. The first layer and the second layer share the active layer. The first gate insulating layer has a first dielectric constant, and the second gate insulating layer has a second dielectric constant. The first dielectric constant and the second dielectric constant are different from each other.

公开(公告)号：US20240379465A1

公开(公告)日：2024-11-14

申请号：US18532105

申请日：2023-12-07

Applicant: Samsung Display Co., Ltd.

Inventor： Deok Jun CHOI ,  Hyo Jung KIM ,  KI YONG PARK ,  Yoo Young PARK ,  Hye Sun SUNG ,  Ji Hyeon SON ,  Seung Bo SHIM ,  Jeong Yong LEE

IPC: H01L21/66 ,  G09G3/3258 ,  G09G3/3291 ,  H10K59/12

Abstract: A method includes: forming a MOSFET layer on a semiconductor wafer substrate, the MOSFET layer including: pixel driver circuits; and a display driver circuit; forming at least one line layer on the MOSFET layer; applying a first supply voltage to a first supply voltage line through a first supply voltage pad; connecting data fan-out lines connected to the pixel driver circuits with a first test line by controlling a test switching circuit in the MOSFET layer; measuring an electrical signal generated from each of the pixel driver circuits through a first test pad connected to the first test line; determining whether each of the pixel driver circuits is defective or not based on the measured electrical signal; and forming a light-emitting element layer including light-emitting elements on the at least one line layer when that the pixel driver circuits are determined to be not defective.