公开(公告)号：US20200258961A1

公开(公告)日：2020-08-13

申请号：US16783297

申请日：2020-02-06

Applicant: Japan Display Inc.

Inventor： Hironori TOYODA

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

Abstract: Provided is an electroluminescence display device including, on a substrate, a plurality of pixels having a light emitting layer made of an electroluminescent material obtained by adding a dopant to a host material, and a bank that separates the adjacent pixels and has been subjected to bleaching processing, in which within the plane of the substrate, the concentration of the dopant in the light emitting layer is distributed and the intensity of the bleaching processing performed on the bank is distributed.

公开(公告)号：US20180294423A1

公开(公告)日：2018-10-11

申请号：US15919243

申请日：2018-03-13

Applicant: Japan Display Inc.

Inventor： Hironori TOYODA

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

Abstract: To provide a display device including a light emitting element layer including an anode electrode, a light emissive layer formed on the anode electrode, and a cathode electrode formed on the light emissive layer, and a bank formed on the lower electrode and having an opening, in which the lower electrode is partially exposed, wherein the light emissive layer includes a p-doped hole transport layer containing p-dopant, and the p-doped hole transport layer contains a larger amount of p-dopant in an area close to an end portion of the opening of the bank than the amount of p-dopant contained in other areas.

公开(公告)号：US20180175118A1

公开(公告)日：2018-06-21

申请号：US15841679

申请日：2017-12-14

Applicant: Japan Display Inc.

Inventor： Hironori TOYODA ,  Norihisa Maeda

IPC: H01L27/32 ,  H01L51/52

Abstract: An organic EL display device includes at least one light emitting unit that includes a first electrode, an organic film that includes a light emitting layer and is provided over the first electrode, and a second electrode that is provided over the organic film and transmits light from the light emitting layer, and an optical adjusting layer that covers the at least one light emitting unit. The optical adjusting layer in a first area that overlaps the at least one light emitting unit in a planar view and the optical adjusting layer in at least one second area that is adjacent to the first area are different from each other in at least one of a number of layers that the optical adjusting layer includes, a film thickness, and a refractive index.

公开(公告)号：US20180088419A1

公开(公告)日：2018-03-29

申请号：US15707139

申请日：2017-09-18

Applicant: Japan Display Inc.

Inventor： Hironori TOYODA

IPC: G02F1/1343 ,  G02F1/1333 ,  G02F1/1337 ,  G02F1/139

CPC classification number: G02F1/134336 ,  G02F1/133345 ,  G02F1/133707 ,  G02F1/139 ,  G02F2201/128 ,  G02F2201/50 ,  G02F2201/501 ,  H01L27/32

Abstract: A display device includes: a pixel electrode formed on an insulating surface; a bank that covers an edge of the pixel electrode and at the same time has an opening in which an upper surface of the pixel electrode is not covered by the bank; an organic layer that covers the opening and includes a light emitting layer; an opposing electrode that is formed on the organic layer and the bank; a cap layer that is formed on the opposing electrode; and a hygroscopic layer that contains a hygroscopic agent and that is formed on the opposing electrode in a region that overlaps with the bank but does not overlap with the opening in a planar view from a display surface side.

公开(公告)号：US20160190509A1

公开(公告)日：2016-06-30

申请号：US15060136

申请日：2016-03-03

Applicant: Japan Display Inc.

Inventor： Toshihiro SATO ,  Hironori TOYODA

IPC: H01L51/52 ,  H01L27/32

CPC classification number: H01L51/5246 ,  H01L27/3211 ,  H01L27/3213 ,  H01L27/3246 ,  H01L27/3248 ,  H01L27/3251 ,  H01L27/3258 ,  H01L27/3276 ,  H01L51/504 ,  H01L51/5044 ,  H01L51/5221 ,  H01L51/5234 ,  H01L51/5243 ,  H01L51/5253 ,  H01L51/5256 ,  H01L51/5284 ,  H01L2251/301 ,  H01L2251/558

Abstract: An organic electroluminescence display device includes: a lower electrode that is made of a conductive inorganic material and formed in each of pixels arranged in a matrix in a display area;a light-emitting organic layer that is in contact with the lower electrode and made of a plurality of different organic material layers including a light-emitting layer emitting light; an upper electrode that is in contact with the light-emitting organic layer, formed so as to cover the whole of the display area, and made of a conductive inorganic material; and a conductive organic layer that is in contact with the upper electrode, formed so as to cover the whole of the display area, and made of a conductive organic material.

公开(公告)号：US20160111474A1

公开(公告)日：2016-04-21

申请号：US14978639

申请日：2015-12-22

Applicant: Japan Display Inc.

Inventor： Toshihiro SATO ,  Hironori TOYODA ,  Jun FUJIYOSHI

IPC: H01L27/32 ,  H01L51/52

CPC classification number: H01L27/322 ,  H01L27/3218 ,  H01L27/3246 ,  H01L27/3248 ,  H01L27/3262 ,  H01L33/10 ,  H01L51/5036 ,  H01L51/5206 ,  H01L51/5221 ,  H01L51/5228 ,  H01L51/5234 ,  H01L51/5246 ,  H01L51/5253 ,  H01L51/5271 ,  H01L51/5284 ,  H01L2251/301 ,  H01L2251/305 ,  H01L2251/308 ,  H01L2251/5307

Abstract: There is provided an EL display device of a color filter system which obtains sufficient brightness and contrast while making it difficult to generate a color mixture even if pixels become fine. An EL display device 100 according to the present invention includes a first substrate 1, a circuit layer 2 formed on the first substrate 1, a color selection reflection layer 11 formed in an upper layer of the circuit layer 2, lower electrodes 5 formed in an upper layer of the color selection reflection layer 11, a white light emission EL layer 7 formed in an upper layer of the lower electrodes 5, an upper electrode 8 formed in an upper layer of the EL layer 7, and a sealing layer 9 formed in an upper layer of the upper electrode 8.

公开(公告)号：US20160064683A1

公开(公告)日：2016-03-03

申请号：US14838495

申请日：2015-08-28

Applicant: Japan Display Inc.

Inventor： Hironori TOYODA ,  Toshihiro SATO

IPC: H01L51/50 ,  H01L27/32

CPC classification number: H01L51/504 ,  H01L27/3206 ,  H01L51/502

Abstract: The display device includes a first organic electroluminescence element which includes an anode and a cathode which form a pair, and a light emitting layer which is formed between the anode and the cathode on a substrate. The light emitting layer includes a plurality of sub-light emitting layers which perform light emitting of colors which are respectively different. Each of the plurality of sub-light emitting layers is doped with a quantum dot light emitting material corresponding to a color to be emitted. A current with current density corresponding to a position of a sub-light emitting layer of a desired color among the plurality of sub-light emitting layers is injected to the light emitting layer, and the sub-light emitting layer of the desired color performs light emitting.

Abstract translation: 显示装置包括：第一有机电致发光元件，其包括形成一对的阳极和阴极;以及形成在基板上的阳极和阴极之间的发光层。 发光层包括执行分别不同的颜色的发光的多个次发光层。 多个子发光层中的每一个被掺杂有与要发射的颜色相对应的量子点发光材料。 将与多个次发光层中的所需颜色的副发光层的位置对应的电流密度的电流注入发光层，并且所需颜色的副发光层进行光 发射。

公开(公告)号：US20160006000A1

公开(公告)日：2016-01-07

申请号：US14791838

申请日：2015-07-06

Applicant: Japan Display Inc.

Inventor： Hironori TOYODA ,  Toshihiro SATO

IPC: H01L51/52 ,  H01L27/32

CPC classification number: H01L51/5218 ,  H01L27/3246 ,  H01L51/5209 ,  H01L51/5237 ,  H01L51/5246 ,  H01L51/5253 ,  H01L51/5265 ,  H01L51/5271

Abstract: An organic EL display device includes lower electrodes each provided for each of pixels, a bank layer formed so as to cover the peripheries of the lower electrodes and including bank openings through each of which a portion of the lower electrode is exposed, a light-emitting layer, an organic layer including portions each formed in the bank opening, a first barrier layer covering the organic layer, a second barrier layer covering the first barrier layer, an intermediate layer located at the edges of the bank openings, and light reflection films each provided under the lower electrode for each of the pixels . A first region where the intermediate layer is present when the pixel is viewed in a plan view includes, above or under the intermediate layer, a different layer structure from that of a second region inside the first region.

Abstract translation: 有机EL显示装置包括各自为每个像素设置的下电极，形成为覆盖下电极的周边的堤层，并且包括通过下电极的一部分暴露的堤开口，发光 层，包括各自形成在堤开口中的部分的有机层，覆盖有机层的第一阻挡层，覆盖第一阻挡层的第二阻挡层，位于堤开口的边缘处的中间层，以及光反射膜 设置在每个像素的下电极下方。 当在平面图中观看像素时存在中间层的第一区域包括在中间层的上方或下方与第一区域内的第二区域的层结构不同的层结构。

公开(公告)号：US20150221895A1

公开(公告)日：2015-08-06

申请号：US14503444

申请日：2014-10-01

Applicant: Japan Display Inc.

Inventor： Toshihiro SATO ,  Hironori TOYODA

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

CPC classification number: H01L51/5246 ,  H01L27/3211 ,  H01L27/3213 ,  H01L27/3246 ,  H01L27/3248 ,  H01L27/3251 ,  H01L27/3258 ,  H01L27/3276 ,  H01L51/504 ,  H01L51/5044 ,  H01L51/5221 ,  H01L51/5234 ,  H01L51/5243 ,  H01L51/5253 ,  H01L51/5256 ,  H01L51/5284 ,  H01L2251/301 ,  H01L2251/558

Abstract: An organic electroluminescence display device includes: a lower electrode that is made of a conductive inorganic material and formed in each of pixels arranged in a matrix in a display area; a light-emitting organic layer that is in contact with the lower electrode and made of a plurality of different organic material layers including a light-emitting layer emitting light; an upper electrode that is in contact with the light-emitting organic layer, formed so as to cover the whole of the display area, and made of a conductive inorganic material; and a conductive organic layer that is in contact with the upper electrode, formed so as to cover the whole of the display area, and made of a conductive organic material.

Abstract translation: 一种有机电致发光显示装置，具备：由导电性无机材料制成的下部电极，形成于显示区域中的矩阵状排列的各像素中; 与下部电极接触并且由包含发光层的发光层的多个不同的有机材料层构成的发光有机层; 形成为覆盖整个显示区域并由导电性无机材料形成的与发光有机层接触的上部电极; 以及与上部电极接触形成为覆盖整个显示区域并由导电性有机材料制成的导电性有机层。

公开(公告)号：US20150054815A1

公开(公告)日：2015-02-26

申请号：US14463700

申请日：2014-08-20

Applicant: Japan Display Inc.

Inventor： Hironori TOYODA ,  Toshihiro SATO

IPC: G09G3/32 ,  H05B33/08

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0262 ,  G09G2320/0606 ,  G09G2320/0666 ,  H01L27/3209 ,  H01L27/322

Abstract: The adjustment of a color temperature is made possible in a display panel using a white light-emitting OLED. The white light-emitting OLED includes a light-emitting layer containing light-emitting materials of respective colors of R, G, and B. By changing the current density of a drive current to be supplied to the white light-emitting OLED, light emission of the OLED is adjusted to a color temperature in response to an instruction from a user. A period PD in which the OLED emits light is changed in inverse proportion to a change in drive current so as to maintain emission luminance in one frame for the emission intensity of the OLED changing in response to the drive current.

Abstract translation: 在使用白色发光OLED的显示面板中可以进行色温的调节。 白色发光OLED包括含有R，G和B的各种颜色的发光材料的发光层。通过改变要提供给白色发光OLED的驱动电流的电流密度，发光 的OLED被响应于来自用户的指令而被调整到色温。 OLED发光的周期PD与驱动电流的变化成反比变化，以便随着驱动电流的变化，维持OLED发光强度的发射亮度在一帧内保持。