Sharp Kabushiki Kaisha Corporation

Yoshiyuki Isomura

Katsuhiro Kikuchi

Yuto Tsukamoto

Hideki Uchida

Satoshi Inoue

Eiji Koike

Masanori Ohara

Manabu Niboshi

Asae Ito

Kazuki Matsunaga

Shinichi Kawato

Ayataka Endo

Takashi Ochi

Yuhki Kobayashi

Takeshi Yaneda

Eiichi Matsumoto

Hiromitsu Katsui

Masahiro Ichihara

Shinji Nakajima

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

An organic electroluminescence device includes a base material including a recessed portion on a surface side, a reflective layer disposed at least on a surface of the recessed portion, a filling layer having optical transparency, the filling layer being disposed in the recessed portion through the reflective layer, a first electrode having optical transparency, the first electrode being disposed at least on an upper-layer side of the filling layer, an organic layer including at least a light emitting layer, the organic layer being disposed on an upper-layer side of the first electrode, and a second electrode having optical transparency and light reflectivity, the second electrode being disposed on an upper-layer side of the organic layer. The filling layer includes at least one type of phosphor.

Organic electroluminescence device with recesses filled with a phosphor filling layer in the base material

The electroluminescence device of the disclosure includes: a base material provided with a recessed portion; a light-emitting element including a reflective layer provided on the front surface of the recessed portion, a filling layer having optical transparency and filling an inside of the recessed portion with the reflective layer interposed therebetween, a first electrode having optical transparency provided on the filling layer, an organic layer including a light-emitting layer provided on the first electrode, and a second electrode having optical transparency provided on the organic layer, and an active element connected to the light-emitting element, wherein a display region includes a plurality of unit regions divided from one another, the unit regions include a plurality of the light-emitting elements and the active elements configured to control the light emission of the plurality of light-emitting elements, and the reflective layer of at least one of the light-emitting elements of the plurality of recessed portions functions as a contact portion with the active element.

Organic electroluminescence device and illumination device

An organic electroluminescence device includes a base material including a recessed portion on one face side, and a light emitting element. The light emitting layer including a reflective layer disposed at least on a surface of the recessed portion, a filling layer that has optical transparency and is filled and disposed in the recessed portion with the reflective layer interposed between the recessed portion and the filling layer, a first electrode that has optical transparency and is disposed at least on an upper-layer side of the filling layer, an organic layer that includes at least a light emitting layer and is disposed on an upper layer of the first electrode, and a second electrode that has optical transparency and is disposed on an upper-layer side of the organic layer. The organic electroluminescence device includes a display region divided into a plurality of unit regions separated from each other. The unit regions each has a light emitting area and a non emissive area that are partitioned. The light emitting area includes the light emitting element, and the non emissive area includes a light absorption layer.

Organic electroluminescence device, illumination device, and display device

To provide an organic EL element having good injection properties and transport properties of a carrier. Included are: an InGaZnO layer with a composition rich in InOas a transparent electrode contacting a negative electrode; an InGaZnO layer with a stoichiometric ratio of In:Ga:Zn:O=1:1:1:4 as an electron injecting layer; and an InGaZnO layer with a composition rich in GaOas an electron transport layer contacting a light emitting layer.

Organic electroluminescence element, organic electroluminescence display device, and method for producing organic electroluminescence element

In an organic EL element equipped with an anode, a cathode, a luminescent layer, and an electron transport layer, the cathode includes a reflecting electrode. The electron transport layer includes a doped electron transport layer to which an n-type dopant material is added and a non-doped electron transport layer to which an n-type dopant material is not added. A first reflection surface that reflects light from the luminescent layer is provided at an interface between the doped electron transport layer and the non-doped electron transport layer.

Organic EL element having reflective interface transport layers

An organic EL display device includes a plurality of sub-pixels each including a first organic EL element and a second organic EL element, a temperature information detector configured to measure current-voltage characteristics of the second organic EL element included in each of the sub-pixels, and to detect, on the basis of a result of the measurement, temperature information of the second organic EL element included in each of the sub-pixels, and a correction unit configured to correct a driving signal of the first organic EL element included in each of the sub-pixels on the basis of the temperature information of the second organic EL element included in the same sub-pixel as the sub-pixel including the relevant first organic EL element.

Organic el display device and method of driving organic el display device

The organic EL device includes a base material, a recessed portion, a reflective layer provided along an inner face of the recessed portion, a filling layer having optical transparency, and filled and disposed at an inside of the recessed portion, with the reflective layer interposed between the recessed portion and the filling layer, a first electrode having optical transparency and provided at an upper-layer side of the filling layer, an organic layer including a light-emitting layer and provided at an upper-layer side of the first electrode, a second electrode having optical transparency and optical reflectivity and provided at an upper-layer side of the organic layer. At least a portion of an edge of the light-emitting region is positioned further inside than an edge of the recessed portion, and the reflective layer and the first electrode are in contact with each other at the periphery of the recessed portion.

Organic electroluminescent device and method for producing organic electroluminescent device

An organic electroluminescence device according to one aspect of the present invention includes: a base material in which a recess is provided at an upper surface of the base material; a reflective layer that is provided at least along a surface of the recess; a filling layer that is filled into an inside of the recess via the reflective layer, the filling layer having light transmissivity; a first electrode that is provided at least on a layer above the filling layer, the first electrode having light transmissivity and light reflectivity; an organic layer that is provided on a layer above the first electrode, the organic layer including at least a light-emitting layer; and a second electrode that is provided on a layer above the organic layer, the second electrode having light transmissivity and light reflectivity. A part of the reflective layer contacts a part of the first electrode.

Organic electroluminescence device including a micro-cavity light extraction structure

An organic EL device according to one aspect of the present invention includes: a base material; a first recess provided on a top surface of the base material; a reflective layer provided along a surface of the first recess; a filling layer filled in the first recess, the filling layer including a top surface on which a second recess is provided; a first electrode provided on an upper layer side of the filling layer; an organic layer comprising a light emitting layer provided on an upper layer side of the first electrode; and a second electrode provided on an upper layer side of the organic layer. Within the organic layer, a part of a light emitting area interposed between the first electrode and the second electrode is positioned inside the second recess The reflective layer is in contact with the first electrode in a periphery of the first recess.

Organic electroluminescence device and method for manufacturing organic electroluminescence device

An organic electroluminescence device according to one aspect of the present invention includes: a substrate; a thin film transistor provided above the substrate; a flattening layer provided above the thin film transistor and including a contact hole which is open on a side opposite to the substrate; a reflecting layer provided along at least a surface of the contact hole; a light-transmitting filling layer configured to fill an inside of the contact hole with the reflecting layer therebetween; and an organic EL element formed above the flattening layer and a contact hole top.

Organic electroluminescence device including an organic electroluminescence element above a contact hole

An organic electroluminescence device according to one aspect of the present invention includes: a base material having a top surface on which a recess is provided; a reflective layer provided along at least a surface of the recess; a filling layer filled inside the recess via the reflective layer, the filling layer having light transmissivity; a first electrode provided at least on an upper layer side of the filling layer, the first electrode having light transmissivity; an organic layer provided on an upper layer side of the first electrode, the organic layer including at least a light emitting layer; and a second electrode provided on an upper layer side of the organic layer, the second electrode having light transmissivity, wherein a coloring material is mixed into the filling layer.

An organic electroluminescence device according to one aspect of the present invention includes: a base material having a top surface on which a recess is provided; a reflective layer provided along at least a surface of the recess; a filling layer filled in the recess via the reflective layer, the filling layer having light transmissivity; a first electrode provided at least on an upper layer side of the filling layer, the first electrode having light transmissivity; an organic layer provided on an upper layer side of the first electrode, the organic layer including at least a light emitting layer; and a second electrode provided on an upper layer side of the organic layer, the second electrode having light transmissivity. The second electrode has a reflectance of 70% or less.

The organic electroluminescent element of the present invention includes, in the given order: an anode; a light-emitting layer; and a cathode, the light-emitting layer including a luminescent dopant layer and a luminescent host layer, the luminescent dopant layer containing a luminescent dopant material and substantially no luminescent host material, the luminescent host layer containing a luminescent host material and substantially no luminescent dopant material.

Organic electroluminescent element and organic electroluminescent display panel which emits light from the cathode side

An organic EL device according to one aspect of the present invention includes: a base material in which a recess is provided at an upper surface of the base material; a reflective layer that is provided at least along a surface of the recess; a filling layer that is filled into an inside of the recess via the reflective layer, the filling layer having light transmissivity; a first electrode that is provided at least on a layer above the filling layer, the first electrode having light transmissivity; an organic layer that is provided on a layer above the first electrode, the organic layer comprising at least a light-emitting layer; and a second electrode that is provided on a layer above the organic layer, the second electrode having light transmissivity and light reflectivity. A part of the reflective layer contacts a part of the first electrode.

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Sakai, Japan

Yoshiyuki Isomura