Sharp Kabushiki Kaisha Corporation

Semiconductor Energy Laboratory Co., Ltd.

Shark Kabushiki Kaisha

Yuto Tsukamoto

Katsuhiro Kikuchi

Manabu Niboshi

Shinichi Kawato

Satoshi Inoue

Hideki Uchida

Eiji Koike

Yoshiyuki Isomura

Masanori Ohara

Tokiyoshi Umeda

Asae Ito

Kazuki Matsunaga

Takashi Ochi

Bai Zhang

Tomohiro Kosaka

Hiroshi Imada

Hisao Ikeda

Tomofumi Osaki

Tomoaki Jo

Seiichi Mitsui

Yuhki Kobayashi

Ayataka Endo

Youhei Nakanishi

Masayuki Kanehiro

Koji Murata

Kohei Yokoyama

Yoshitaka Dozen

Nozomu Sugisawa

Hisayuki Utsumi

Naoyuki Senda

Shota Okamoto

Yoshiharu Hirakata

Fumikazu Shimoshikiryoh

Kaoru Hatano

Noritaka Kishi

Hiroshi Tsuchiya

Noboru Noguchi

Takuya Kawata

Eiichi Matsumoto

Masahiro Ichihara

Kazuo Takizawa

Shinji Nakajima

The light-emitting device includes a light-emitting element in which a first electrode, a light-emitting layer, and a second electrode are sequentially layered toward a light-emitting face side. The plurality of light-emitting elements include a first light-emitting element configured to emit light of a first color, a second light-emitting element configured to emit light of a second color different from the first color, and a third light-emitting element configured to emit light of a third color different from the first color and the second color. The light-emitting device includes a light absorption layer on the light-emitting face side of the second electrode, in plane view, in common at positions where the light absorption layer is superimposed on the plurality of light-emitting elements, and the light absorption layer absorbs the light of the first color, the light of the second color, and the light of the third color.

Light-emitting device

A display device includes a light-emitting element layer including light-emitting elements in a plurality of kinds each emitting a light in a different color. A first electrode of the light-emitting elements includes a plurality of reflective layers including one RM and one TE stacked on the RM. The plurality of the reflective layers are stacked so that the RM and the TE are alternatively arranged in the stated order.

Display device

A display device includes a plurality of sub-pixels. The sub-pixels include, in common, a common hole-transport layer disposed between an anode and a light-emitting layer. Each sub-pixel individually includes an individual hole-transport layer disposed between the common hole-transport layer and the light-emitting layer. The common hole-transport layer is made of a first hole-transport-layer material. A sub-pixel has a first color and includes a first individual hole-transport layer made of a second hole-transport-layer material. A sub-pixel has a second color and includes a second individual hole-transport layer made of a mixed material of the first and second hole-transport-layer materials.

Display device, display device manufacturing method, display device manufacturing apparatus

The light-emitting device includes a light-emitting element in which a first electrode, a light-emitting layer, and a second electrode are sequentially layered toward a side of a light-emitting face. Further, the light-emitting device includes, on a side of the light-emitting face of the second electrode, a complementary color light absorption layer configured to absorb complementary color light of light emitted by the light-emitting element.

Light-emitting device including complementary color light absorption layer

A TFT layer; a light-emitting element layer including a first electrode, a light-emitting layer, and a second electrode; a wavelength conversion layer formed above the light-emitting element layer and being configured to convert a color of light from the light-emitting layer; a dielectric layer formed above the wavelength conversion layer; and a particle layer formed above the dielectric layer and including metal nanoparticles including a core and a shell around the core.

A display device includes a light-emitting layer and a red converting layer, the red converting layer includes a binder resin, red luminescent bodies, and In nanoparticles, each of the In nanoparticles includes a core and a silica shell, and the silica shell includes blue luminescent bodies emitting light having a wavelength shorter than that of red luminescent bodies.

A light-emitting device or the like with high color reproducibility and high luminous efficiency is achieved. The light-emitting device includes a blue pixel, a green pixel, and a red pixel, and the green pixel includes, in a green-light-emitting layer that emits light, a host material that transports carriers, a fluorescence dopant, which serves as a light emission dopant that contribute to light emission, and a thermally activated assist dopant which is composed of a thermally activated delayed fluorescent material.

Light emitting device and display device

Alight-emitting element includes an anode electrode, a cathode electrode, a light-emitting layer, a positive hole transport layer, and an electron transport layer. The light-emitting layer, the positive hole transport layer, and the electron transport layer are provided between the anode electrode and the cathode electrode. The light-emitting layer includes QD phosphor particles, a positive hole transport substance configured to transport positive holes transported thereto by the positive hole transport layer, an electron transport substance configured to transport electrons transported thereto by the electron transport layer, and a photosensitive host material.

Light emitting element comprising quantum dots and method for producing light emitting element

To provide a light-emitting device that can obtain fluorescence having a narrow spectrum more efficiently, a light-emitting device includes: a light-emitting layer in which thermally activated delayed fluorescence bodies and quantum dots are dispersed; a first electrode in a lower layer than the light-emitting layer; and a second electrode in an upper layer than the light-emitting layer, wherein a light emission spectrum of the thermally activated delayed fluorescence bodies and an absorption spectrum of the quantum dots at least partially overlap each other.

Light-emitting device including light-emitting layer in which thermally activated delayed fluorescence bodies and quantum dots are dispersed and manufacturing apparatus of light-emitting device

An organic EL display device includes a light modulating unit layer, a TFT layer, and a plurality of organic EL elements layered in the stated order. A top-emitting single-sided display emitting light emitted from a light emitting layer from an upper electrode side and a double-sided display emitting light emitted from the light emitting layer from each of the upper electrode side and a lower electrode side are electrically switched.

Display device configured to switch between single-sided and double-sided display

To provide a light-emitting device for achieving fluorescence emission with higher efficiency and longer life, a light-emitting device includes an exciton generation layer in which quantum dots are dispersed, a light-emitting layer in which light emitters, which are phosphors or phosphorescent members, are dispersed, the light-emitting layer adjoining the exciton generation layer in a vertical direction, a first electrode located on a lower side of the exciton generation layer and the light-emitting layer, and a second electrode located on an upper side of the exciton generation layer and the light-emitting layer, and the light emission spectrum of the quantum dots and the absorption spectrum of the light emitters at least partially overlap.

An organic EL display device includes a blue pixel, and a second pixel configured to output light having a peak wavelength longer than that of blue light. The blue pixel includes a blue phosphorescent luminescent material containing layer and a blue fluorescent luminescent material containing layer as common layers common to the plurality of pixels, and the second pixel includes a second phosphorescent luminescent material containing layer provided in each of the second pixel, adjacently to the common layers at the side of an anode from the common layers.

Organic EL display device, manufacturing method thereof, and light-emission method thereof

An organic EL display device with higher resolution, suppressed power consumption while being driven and low manufacturing cost, and no color mixing and color shifting between subpixels adjacent to each other is provided. In a B subpixel, a first separation layer is provided between a common blue-light-emitting layer and a common green-light-emitting layer. In a G subpixel, a second separation layer is provided between the common green-light-emitting layer and a common red-light-emitting layer.

Organic EL display device and organic EL display device manufacturing method

An organic electroluminescence device according to one aspect of the disclosure includes a base material including a recessed portion on an upper face, and a light emitting element including a reflective layer, a filling layer having optical transparency, a first electrode having optical transparency, an organic layer including at least a light emitting layer, and a second electrode having optical transparency. The reflective layer is disposed at least on a surface of the recessed portion. The filling layer is disposed at an inside of the recessed portion with the reflective layer interposed between the recessed portion and the filling layer. The first electrode is disposed at least on an upper-layer side of the filling layer. The organic layer is disposed on an upper layer of the first electrode. The second electrode is disposed on an upper-layer side of the organic layer. The organic electroluminescence device includes a display region that is divided into a plurality of unit regions. The plurality of unit regions each having the light emitting element has a light emitting area and a transmissive area that are partitioned.

Organic electroluminescence device including a plurality of unit regions each including a light emitting area and a transmissive area

Provided is a display apparatus where: a blue light-emitting layer is formed as a layer that is common to a first subpixel, a second subpixel, and a third subpixel; a green light-emitting layer is formed as a layer that is common to the second subpixel and the third subpixel; and the red light-emitting layer is formed only in the third subpixel.

Growing community of inventors

Sakai, Japan

Yuto Tsukamoto