公开(公告)号：US12300766B2

公开(公告)日：2025-05-13

申请号：US17614724

申请日：2020-05-20

Applicant: Samsung Display Co., LTD.

Inventor： Hyun Deok Im ,  Jong Hyuk Kang ,  Dae Hyun Kim ,  Won Hee Nam ,  Ki Sun Jang ,  Hyun Min Cho

IPC: H01L33/38 ,  H01L27/15

Abstract: A display device includes at least one pixel; at least one electrode spaced apart from each other in each of the at least one pixel; and at least one light-emitting element disposed between the at least one electrode, wherein the at least one electrode include at least one inner electrode disposed adjacent to the center of each of the at least one pixel; and at least one outer electrode spaced apart from each of the at least one inner electrode, a distance between the central portion of the at least one pixel and the at least one outer electrode is greater than a distance between the central portion of the at least one pixel and the inner electrode, and a width of the at least one inner electrode is different from a width of the at least one outer electrode.

公开(公告)号：US12017453B2

公开(公告)日：2024-06-25

申请号：US17802897

申请日：2020-06-08

Applicant: Samsung Display Co., LTD.

Inventor： Jong Hyuk Kang ,  Jin Oh Kwag ,  Won Hee Nam ,  Suk Beom You ,  Hyun Min Cho

IPC: B41J2/045 ,  B41J2/11 ,  B41J2/14 ,  B41J2/175

CPC classification number: B41J2/04593 ,  B41J2/11 ,  B41J2/14 ,  B41J2/17596 ,  B41J2002/14491

Abstract: Provided are an inkjet printing device, a method for printing bipolar elements, and a method for manufacturing a display device. The inkjet printing device includes an inkjet head disposed above a stage and including a plurality of nozzles through which ink including bipolar elements each having areas doped with partially different polarities is discharged; an actuator disposed in the inkjet head and adjusting an amount of droplet of the ink discharged through the plurality of nozzles; and at least one sensing part disposed in the inkjet head and measuring a number of bipolar elements discharged through the plurality of nozzles.