公开(公告)号：US12148861B2

公开(公告)日：2024-11-19

申请号：US17718869

申请日：2022-04-12

Applicant: Samsung Display Co., LTD.

Inventor： Jin Woo Choi ,  Sung Kook Park ,  Sung Eun Baek ,  Byung Choon Yang ,  So Yeon Yoon

IPC: H01L33/38 ,  H01L27/15 ,  H01L33/00 ,  H01L33/42 ,  H01L33/62

Abstract: A display device includes a pixel electrode disposed on a substrate and including a reflective electrode layer and an upper electrode layer, a contact electrode disposed on the pixel electrode, light-emitting elements disposed on the contact electrode and disposed perpendicular to the pixel electrode, a planarization layer disposed on the pixel electrode, the planarization layer filling a space between the light-emitting elements, and a common electrode disposed on the planarization layer and the light-emitting elements, and a size of the contact electrode is equal to a size of each of the light-emitting elements in a plan view, and the upper electrode layer is disposed on the reflective electrode layer and is in a polycrystalline phase.

公开(公告)号：US11888086B2

公开(公告)日：2024-01-30

申请号：US17553653

申请日：2021-12-16

Applicant: Samsung Display Co., LTD.

Inventor： Jin Woo Choi ,  Min Woo Kim ,  Sung Kook Park ,  Dae Ho Song ,  So Yeon Yoon ,  Joo Woan Cho

IPC: H01L33/00 ,  H01L25/075

CPC classification number: H01L33/0095 ,  H01L25/0753 ,  H01L33/0093 ,  H01L2933/0016

Abstract: A manufacturing apparatus of a display device, includes: a first unit to transfer a plurality of light emitting elements on a growth substrate to a first film; a second unit to expand the first film; a third unit to retransfer the plurality of light emitting elements to a second film; a fourth unit to determine positions of the plurality of light emitting elements on the second film; a fifth unit to bin the light emitting elements on the second film, and determine an effective light source from among the light emitting elements; a sixth unit to form a plurality of pixels on a substrate, each pixel including a first bonding electrode; a seventh unit to remove the second film after transferring one light emitting element to the first bonding electrode of one pixel; and an eighth unit to form a second electrode on the one light emitting element.