公开(公告)号：EP2864836A4

公开(公告)日：2016-02-24

申请号：EP13807387

申请日：2013-06-12

Applicant: E INK CALIFORNIA LLC

Inventor： CHAN BRYAN H ,  LIN CRAIG ,  ZANG HONGMEI

IPC: G02F1/167

CPC classification number: G02F1/167 ,  B06B1/06 ,  B06B1/0644 ,  B06B1/0659 ,  G02B26/026 ,  G02F2001/133394 ,  G02F2001/1672 ,  G09G3/34 ,  G09G3/3433 ,  G09G3/344 ,  G09G2380/02 ,  H01L41/08 ,  H01L41/0805 ,  H01L41/293 ,  H01L41/297 ,  H01L41/31 ,  H01L41/312 ,  H01L41/35

公开(公告)号：EP2856460A4

公开(公告)日：2015-12-23

申请号：EP13797753

申请日：2013-05-16

Applicant: E INK CALIFORNIA LLC

Inventor： LIN CRAIG ,  CHAN BRYAN H

IPC: G09F9/00 ,  G02F1/1333 ,  G02F1/167

CPC classification number: G02F1/1333 ,  G02F1/0102 ,  G02F1/133377 ,  G02F1/167 ,  G02F2001/133374 ,  G02F2001/1672

Abstract: The present invention is directed to display devices comprising a watermark area and a non-watermark area. The display cells in the watermark area have widths of the partition walls, heights of the partition walls, or top opening shapes, which are different from those of the display cells in the non-watermark area. The watermark aims to protect against counterfeiting or to be used for decoration purposes. The watermark is visible at certain viewing angles and/or under certain lighting conditions and it does not interfere with displaying of the regular images.