公开(公告)号：US20190197286A1

公开(公告)日：2019-06-27

申请号：US16047007

申请日：2018-07-27

Applicant: Samsung Display Co., Ltd.

Inventor： Jeung Soo KIM ,  Tae Eun KIM ,  Youn Bum LEE ,  Young Kwang KIM ,  Tae Hun KIM ,  Sang Hyun LEE

IPC: G06K9/00 ,  H01L27/32

CPC classification number: G06K9/0004 ,  H01L27/14678 ,  H01L27/3234 ,  H01L27/3244

Abstract: A display device includes a substrate having a display region and a non-display region disposed at one side of the display region, the display region includes first and second areas adjacent to each other; a display unit disposed on a front surface of the substrate, the display unit including a plurality of pixels for displaying an image; a cushion layer disposed on a rear surface of the substrate, the cushion layer including a first opening portion corresponding to the first area; a fingerprint sensor provided in the first opening portion of the cushion layer, the fingerprint sensor sensing a fingerprint of a user; and a first light-blocking layer disposed on a rear surface of the substrate, the first light-blocking layer covering at least part of the cushion layer and a lower surface of the fingerprint sensor.

公开(公告)号：US20220380668A1

公开(公告)日：2022-12-01

申请号：US17826064

申请日：2022-05-26

Applicant: Samsung Display Co., Ltd.

Inventor： Jong Hee PARK ,  Hyoung Sik KIM ,  Sang Hyuk LEE ,  Yong Hoe KIM ,  Young Kwang KIM ,  Dong Ho KANG ,  Hyun-Cheol SHIN ,  Sung-Tae KIM ,  Dong Hun LEE ,  Min Hye LEE ,  Byung Su LEE ,  Ki Su JUNG

IPC: C09K13/06 ,  H01L27/32 ,  H01L51/00 ,  H01L51/52 ,  H01L51/56

Abstract: An etchant composition includes: an inorganic acid compound at 9.0 wt % to 9.9 wt %; an inorganic salt compound at 5.0 wt % to 10.0 wt %; an organic acid compound at 35 wt % to 45 wt %; a lactate-based compound at 10 wt % to 20 wt %; a nitrogen cyclic compound containing oxygen at 0.1 wt % to 1.0 wt %; and a remaining amount of water such that a total weight of the etchant composition is 100 wt %, wherein the inorganic acid compound is an etchant composition having an acid dissociation constant (pKa) value of −1.0 to −3.0.