公开(公告)号：US20200295304A1

公开(公告)日：2020-09-17

申请号：US16808512

申请日：2020-03-04

Applicant: Japan Display Inc.

Inventor： Tomohiko NAGANUMA

IPC: H01L51/52 ,  H01L27/32

Abstract: Layers interposed between a light emitting layer and pixel electrodes include an upper layer including at least one layer above a carrier generation layer and a lower layer including one or more layers below the carrier generation layer. The carrier generation layer has carrier mobility 100 times or higher than any one of one layer contacting a lower surface of the light emitting layer and one layer contacting a lower surface of the carrier generation layer. Light emitting sections are divided into groups corresponding to different light emitting colors. Each of the groups is different from at least one of the other groups in the distance that a corresponding group of the light emitting sections has from the lower surface of the light emitting layer to a reflective surface. First sections have a uniform thickness.

公开(公告)号：US20200052046A1

公开(公告)日：2020-02-13

申请号：US16531822

申请日：2019-08-05

Applicant: Japan Display Inc.

Inventor： Tomohiko NAGANUMA

IPC: H01L27/32 ,  H01L51/56 ,  H01L51/50

Abstract: An organic EL display device according to an embodiment of the present invention includes: a base material; a plurality of pixels located on the base material; a lower electrode included in each of the plurality of pixels; a bank defining the plurality of pixels; an organic material layer disposed on the lower electrode and on the bank and including a plurality of layers; and an upper electrode disposed on the organic material layer. In a first layer included in the organic material layer, a non-existent region where the first layer is cut off or has a thickness thinner than that of another region is formed, and the non-existent region is formed in at least a portion of an effective region of the pixel surrounded by the bank.

公开(公告)号：US20190294276A1

公开(公告)日：2019-09-26

申请号：US16438935

申请日：2019-06-12

Applicant: Japan Display Inc.

Inventor： Tomohiko NAGANUMA ,  Mitsuhide MIYAMOTO ,  Chunche MA

IPC: G06F3/044 ,  G06F3/041 ,  H01L27/32 ,  H01L51/52

Abstract: First electrodes are formed on an insulation surface in such a manner that the adjacent first electrodes are connected in a first direction and are separated in a second direction intersecting the first direction. Second electrodes are formed on an insulation surface in such a manner that the adjacent second electrodes are connected in the second direction and are separated in the first direction. Third electrodes are formed in regions in which the third electrodes overlap with the first electrodes and do not overlap with the second electrodes in such a manner that the adjacent third electrodes are connected in the second direction and are separated in the first direction. A flexible insulation layer is formed between the first electrodes and the third electrodes. An area of each of the third electrodes is less than an area of each of the first electrodes.

公开(公告)号：US20180088708A1

公开(公告)日：2018-03-29

申请号：US15704535

申请日：2017-09-14

Applicant: Japan Display Inc.

Inventor： Tomohiko NAGANUMA ,  Mitsuhide MIYAMOTO ,  Chunche MA

IPC: G06F3/044 ,  H01L51/00 ,  H01L51/52 ,  H01L27/32 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F3/0414 ,  G06F3/0418 ,  G06F2203/04111 ,  H01L27/323 ,  H01L51/0097 ,  H01L51/5253 ,  H01L2251/5338

Abstract: First electrodes are formed on an insulation surface in such a manner that the adjacent first electrodes are connected in a first direction and are separated in a second direction intersecting the first direction. Second electrodes are formed on an insulation surface in such a manner that the adjacent second electrodes are connected in the second direction and are separated in the first direction. Third electrodes are formed in regions in which the third electrodes overlap with the first electrodes and do not overlap with the second electrodes in such a manner that the adjacent third electrodes are connected in the second direction and are separated in the first direction. A flexible insulation layer is formed between the first electrodes and the third electrodes. An area of each of the third electrodes is less than an area of each of the first electrodes.

公开(公告)号：US20170351358A1

公开(公告)日：2017-12-07

申请号：US15604764

申请日：2017-05-25

Applicant: Japan Display Inc.

Inventor： Yuko MATSUMOTO ,  Tomohiko NAGANUMA

IPC: G06F3/044 ,  H01L27/32

CPC classification number: G06F3/04144 ,  G06F3/0412 ,  G06F3/044 ,  G06F3/0447 ,  G06F2203/04103 ,  G06F2203/04111 ,  H01L27/323 ,  H01L27/3246 ,  H01L27/3248

Abstract: A sensing circuit is configured to measure a first physical quantity corresponding to a first capacitance being a parasitic capacitance formed in at least one of electrode groups including a plurality of first electrodes and a plurality of second electrodes, to thereby detect that significant change has occurred in the first capacitance due to touching of a conductor when an obtained first measurement value is out of a first range. The sensing circuit is further configured to measure a second physical quantity corresponding to a second capacitance formed between each of the plurality of first electrodes and each of the plurality of second electrodes, to thereby detect that significant change has occurred in the second capacitance due to compression of an insulating elastic layer based on a pressing force when an obtained second measurement value is out of a second range.

公开(公告)号：US20170141167A1

公开(公告)日：2017-05-18

申请号：US15290591

申请日：2016-10-11

Applicant: Japan Display Inc.

Inventor： Tomohiko NAGANUMA

IPC: H01L27/32 ,  H01L51/56 ,  H01L51/50 ,  H01L51/52

CPC classification number: H01L27/3246 ,  H01L27/3211 ,  H01L27/326 ,  H01L27/3276 ,  H01L51/502 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5203 ,  H01L51/5268 ,  H01L51/5271 ,  H01L51/56 ,  H01L2227/323 ,  H01L2251/5392

Abstract: There is provided a display device including a plurality of pixels, a bank layer located at boundaries among the plurality of pixels and separating each of the plurality of pixels, lower electrodes respectively provided in the plurality of pixels, a light emitting layer arranged on at least a lower electrode of the lower electrodes, and an upper electrode arranged on the light emitting layer, in which the light emitting layer has a first surface opposing the lower electrode, a second surface located on an opposite side of the light emitting layer from the first surface, and a side surface intersecting the first surface and the second surface, and the bank layer is located on an opposite side of the light emitting layer from the lower electrode and covers a part of the second surface and the side surface of the light emitting layer.