公开(公告)号：US20250063913A1

公开(公告)日：2025-02-20

申请号：US18938475

申请日：2024-11-06

Applicant: Japan Display Inc.

Inventor： Nobuto MANAGAKI

IPC: H10K59/131 ,  G06F3/041 ,  G06F3/044 ,  H01L23/532 ,  H10K50/844 ,  H10K59/40

Abstract: A display device includes a substrate, a circuit element layer on the substrate, a display element layer on the circuit element layer, a sealing film on the display element layer, an oxide film on the sealing film, a barrier metal layer on the oxide film, and a wiring layer on the barrier metal layer, wherein a surface of the sealing film in contact with the oxide film has concave/convexities, and the barrier metal layer is formed by titanium nitride. A height of the concave/convexities of the surface of the sealing film may be less than 30 nm. A thickness of the oxide film may be 5 nm or less.

公开(公告)号：US20240215279A1

公开(公告)日：2024-06-27

申请号：US18391722

申请日：2023-12-21

Applicant: Japan Display Inc.

Inventor： Nobuto MANAGAKI

IPC: H10K50/11 ,  H10K50/16 ,  H10K50/165

CPC classification number: H10K50/11 ,  H10K50/165 ,  H10K50/166

Abstract: According to one embodiment, a display device has such configuration that an electron transport layer includes a high-concentration layer and a low-concentration layer, the high-concentration layer is adjacent to an interface with the electron injection layer, the concentration of Liq contained in the high-concentration layer is 70% or more and 90% or less, the concentration of Liq contained in the low-concentration layer is 10% or more and 50% or less, and the thickness of the high-concentration layer is 5% or more and 15% or less of the thickness of the electron transport layer.

公开(公告)号：US20230209850A1

公开(公告)日：2023-06-29

申请号：US18086643

申请日：2022-12-22

Applicant: Japan Display Inc.

Inventor： Nobuto MANAGAKI ,  Takuya NAKAGAWA ,  Ryosuke MURATA ,  Masakazu GUNJI ,  Takahiro USHIKUBO ,  Masashi TSUBUKU

IPC: H10K50/11

CPC classification number: H01L51/5004 ,  H01L2251/558

Abstract: According to one embodiment, a display device includes an anode, an organic EL element layer including a hole injection layer, a hole transport layer, an electron blocking layer, a light-emitting layer, a hole blocking layer, an electron transport layer and an electron injection layer, and a cathode, wherein ΔE2_LUMO is defined as a potential barrier between the electron transport layer and the hole blocking layer, and the light-emitting layer, ΔE2_HOMO is defined as a potential barrier between the hole transport layer and the electron blocking layer, and the light-emitting layer, and each of ΔE2_LUMO and ΔE2_HOMO is 0.1 eV or higher and 0.5 eV or less.

公开(公告)号：US20250126969A1

公开(公告)日：2025-04-17

申请号：US18910109

申请日：2024-10-09

Applicant: Japan Display Inc.

Inventor： Nobuto MANAGAKI

IPC: H10K50/18 ,  H10K101/10 ,  H10K101/20

Abstract: Disclosed is a light-emitting element including an anode, a cathode, and an electroluminescence layer between the anode and the cathode. The electroluminescence layer includes: an electron-blocking layer; a buffer layer over the electron-blocking layer; and an emission layer located over the buffer layer and containing a host material and a first emission material exhibiting thermally activated delayed fluorescence. The buffer layer contains the host material. The emission layer may further include a second emission material. An energy level of a singlet excited state of the second emission material is lower than an energy level of a singlet excited state of the first emission material.

公开(公告)号：US20250048880A1

公开(公告)日：2025-02-06

申请号：US18775347

申请日：2024-07-17

Applicant: Japan Display Inc.

Inventor： Nobuto MANAGAKI

IPC: H10K59/70 ,  H10K59/12 ,  H10K59/35

Abstract: The display device includes at least one pixel having a first sub-pixel, a second sub-pixel, and a third sub-pixel. The first sub-pixel and the second sub-pixel respectively include red-emissive and green-emissive organic electroluminescence elements. The third sub-pixel includes a blue-emissive inorganic electroluminescence element. Each of the organic electroluminescence elements includes an anode, a cathode, and an organic electroluminescence layer between the anode and the cathode. The inorganic electroluminescence element includes an anode, a cathode, and an inorganic electroluminescence layer electrically connected to the anode and the cathode.

公开(公告)号：US20240215294A1

公开(公告)日：2024-06-27

申请号：US18391684

申请日：2023-12-21

Applicant: Japan Display Inc.

Inventor： Nobuto MANAGAKI ,  Hayata AOKI

IPC: H10K50/18 ,  H10K59/35 ,  H10K71/10 ,  H10K101/40

CPC classification number: H10K50/181 ,  H10K59/35 ,  H10K71/10 ,  H10K2101/40

Abstract: According to one embodiment, a display device includes an anode, a cathode opposing the anode and an organic layer located between the anode and the cathode, and the organic layer includes a hole injection layer, a hole transport layer, an electron blocking layer, a light emitting layer, a hole blocking layer, an electron transport layer, and an electron injection layer, and at least one of the electron blocking layer and the hole blocking layer has a resistance of 10% or more and 30% or less in a thickness direction when a total resistance between the anode and the cathode is set to 100%.

公开(公告)号：US20240215278A1

公开(公告)日：2024-06-27

申请号：US18389834

申请日：2023-12-20

Applicant: Japan Display Inc.

Inventor： Nobuto MANAGAKI

IPC: H10K50/11 ,  H10K59/12

CPC classification number: H10K50/11 ,  H10K59/1201 ,  H10K2101/40

Abstract: According to one embodiment, a display device has such configuration that each of ΔE1_LUMO and ΔE1_HOMO is 0.35 eV or less (ΔE1≤0.35 eV), each of ΔE2_LUMO and ΔE2_HOMO is 0.1 eV or more and 0.5 eV or less (0.1 eV≤ΔE2≤0.5 eV), the light emitting layer includes a first material and a second material, a band gap of the first material is larger than a band gap of the second material, and a ratio of the first material to the second material is 5% or more and less than 40%.

公开(公告)号：US20230413627A1

公开(公告)日：2023-12-21

申请号：US18458218

申请日：2023-08-30

Applicant: Japan Display Inc.

Inventor： Nobuto MANAGAKI

IPC: H10K59/131 ,  G06F3/041 ,  G06F3/044 ,  H01L23/532 ,  H10K50/844 ,  H10K59/40

CPC classification number: H10K59/131 ,  G06F3/0412 ,  G06F3/044 ,  H01L23/53266 ,  G06F3/04164 ,  G06F3/0446 ,  G06F3/0443 ,  H10K50/844 ,  H10K50/8445 ,  H10K59/40 ,  G06F2203/04103 ,  G06F2203/04111

Abstract: A display device includes a substrate, a circuit element layer on the substrate, a display element layer on the circuit element layer, a sealing film on the display element layer, an oxide film on the sealing film, a barrier metal layer on the oxide film, and a wiring layer on the barrier metal layer, wherein a surface of the sealing film in contact with the oxide film has concave/convexities, and the barrier metal layer is formed by titanium nitride. A height of the concave/convexities of the surface of the sealing film may be less than 30 nm. A thickness of the oxide film may be 5 nm or less.

公开(公告)号：US20220254859A1

公开(公告)日：2022-08-11

申请号：US17729049

申请日：2022-04-26

Applicant: Japan Display Inc.

Inventor： Nobuto MANAGAKI

IPC: H01L27/32 ,  G06F3/041 ,  G06F3/044 ,  H01L23/532 ,  H01L51/52

Abstract: A display device includes a substrate, a circuit element layer on the substrate, a display element layer on the circuit element layer, a sealing film on the display element layer, an oxide film on the sealing film, a barrier metal layer on the oxide film, and a wiring layer on the barrier metal layer, wherein a surface of the sealing film in contact with the oxide film has concave/convexities, and the barrier metal layer is formed by titanium nitride. A height of the concave/convexities of the surface of the sealing film may be less than 30 nm. A thickness of the oxide film may be 5 nm or less.

公开(公告)号：US20210313525A1

公开(公告)日：2021-10-07

申请号：US17205414

申请日：2021-03-18

Applicant: Japan Display Inc.

Inventor： Nobuto MANAGAKI

IPC: H01L51/00 ,  H01L27/32 ,  H01L51/56 ,  B32B27/08 ,  B32B27/28

Abstract: A semiconductor device includes: a resin substrate; a display element configured to generate an image; and a circuit layer including a thin film transistor configured to control the display element. The resin substrate has a main body made of resin and a surface layer made of the resin laminated on the main body. The surface layer has a lower electrification property than the main body or the surface layer has a lower film density than the main body. Each of the display element and the circuit layer is on the surface layer.