• 专利标题:   Electrophoretic display comprises substrate comprising electrode, electrophoretic layer, dielectric layer, and network electrode formed from flowable electrode precursor and comprising material having preset volume resistivity.
  • 专利号:   US11175561-B1
  • 发明人:   ANSETH J W, PAOLINI R J
  • 专利权人:   EINK CORP
  • 国际专利分类:   G02B026/00, G02F001/167, G02F001/1675, G02F001/1676
  • 专利详细信息:   US11175561-B1 16 Nov 2021 G02B-026/00 202220 English
  • 申请详细信息:   US11175561-B1 US382381 12 Apr 2019
  • 优先权号:   US656660P, US382381

▎ 摘  要

NOVELTY - An electrophoretic display comprises substrate (112) having a top surface (118) and comprising electrode, an electrophoretic layer (114), dielectric layer arranged between the substrate electrode and electrophoretic layer, and network electrode (116) formed from a flowable electrode precursor and occupying at least a portion of the network of valleys. The electrophoretic layer comprises microcapsules containing an internal phase and is bound together in a continuous polymeric binder. The internal phase comprises particles arranged in a fluid and is capable of moving through the fluid upon application of an electric field. The electrophoretic layer is constructed, in which bottom portion of the microcapsules is embedded in the binder and top portion of the microcapsules is emergent from binder to provide a network of valleys positioned between the top portion of the microcapsules. The network electrode comprises a material having a volume resistivity of less than 1x103 Ohm.cm. USE - Electrophoretic display. ADVANTAGE - The electrophoretic display has excellent brightness, contrast, wide viewing angles, state bistability, and low power consumption. DETAILED DESCRIPTION - An electrophoretic display comprises substrate having a top surface and comprising an electrode, an electrophoretic layer arranged adjacent to and contacting the top surface, dielectric layer arranged between the substrate electrode and electrophoretic layer, and network electrode formed from a flowable electrode precursor and occupying at least a portion of the network of valleys. The electrophoretic layer comprises microcapsules containing an internal phase and is bound together in a continuous polymeric binder. The internal phase comprises particles arranged in a fluid and is capable of moving through the fluid upon application of an electric field. The electrophoretic layer is constructed, in which bottom portion of the microcapsules of the internal phase is embedded in the continuous polymeric binder and top portion of the microcapsules of the internal phase is emergent from the continuous polymeric binder to provide a network of valleys positioned between the top portion of the microcapsules of the internal phase. The network electrode comprises a material having a volume resistivity of less than 1x103 Ohm.cm. An INDEPENDENT CLAIM is included for manufacture of electrophoretic display medium (110). DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the electrophoretic display medium. Electrophoretic display medium (110) Substrate (112) Electrophoretic layer (114) Network electrode (116) Top surface (118)