Japan Display Inc.

Nippon Paper Industries Co., Ltd.

Yusuke Tada

Hajime Akimoto

Yuko Matsumoto

Mitsuhide Miyamoto

Kazuhiko Inoue

Takeshi Nakatani

Toshihiro Sato

Takeshi Fujii

Satoshi Takaichi

Hiroyoshi Suzuki

Hiroshi Shinkura

Kasumi Nishigaya

Masanari Takahashi

Naoyuki Tamura

Riichi Muramatsu

The method for manufacturing a display device includes forming a light emitting element and a terminal on a substrate, forming a sealing film including a first inorganic insulating film and a second inorganic insulating film to cover the light emitting element and the terminal, forming a resist having a taper shape in which a thickness of an end portion on the sealing film becomes thinner as it goes to the terminal side by using a gray-tone mask, forming a taper shape in which thicknesses in end portions of the first inorganic insulating film and the second inorganic insulating film becomes thinner as it goes to the terminal side by etching, forming a touch electrode above the sealing film and forming wiring connected to the terminal via the end portions together with connecting to the touch electrode for detecting a touched position.

Sensor device

A display device includes a display region including a plurality of pixels, a plurality of first electrodes formed by wiring included in a first layer, and aligned in a first direction above the display region, a plurality of second electrodes formed by wiring included in the first layer, and aligned in a second direction intersecting the first direction, a connection wiring formed by wiring included in a second layer, and electrically connecting each of the plurality of first electrodes respectively, an insulating layer separating wiring included in the first layer and wiring included in the second layer, and a light shielding layer located at a different position to the connection wiring and overlapping a space between the plurality of first electrodes and the plurality of second electrodes in the first layer, in a plan view.

Display device with touch sensor having overlapping end parts of first and second light shielding layers

Carboxymethylated cellulose nanofibers in which the degree of carboxymethyl substitution is higher than 0.30 and no more than 0.60, the cellulose type I crystallinity is 60% or higher, and the transmittance of light having a wavelength of 660 nm when the carboxymethylated celluose nanofibers are made into an aqueous dispersion having a solids fraction of 1% (w/v) is 60% or higher.

Carboxymethylated cellulose nanofibers

A powder that contains carboxymethylated cellulose nanofibers, said carboxymethylated cellulose nanofibers having a degree of carboxymethyl substitution of 0.50 or less and a cellulose type I crystallinity of 60% or more, and has a median diameter of 10.0 μm to 150.0 μm. This powder is suitable usable as an additive.

Powder containing carboxymethylated cellulose nanofibers

Display device and method of manufacturing display device

A carboxymethylated cellulose having a carboxymethyl substitution of no more than 0.50 and a cellulose I type crystallization of at least 50%. Ideally, the anionization is 0.00-1.00 meq/g. The Schopper-Riegler freeness is ideally at least 60.0&#xb0; SR. Ideally the ratio of filtration residue is 0%-30% by mass. The viscosity (30 rpm, 25&#xb0; C.) for an aqueous dispersion having a 1% solid content (w/v) is ideally no more than 10.0 mPa&#xb7;s.

Carboxymethylated cellulose

Provided is a novel manufacturing method whereby a carboxymethylated cellulose nanofiber dispersion having high tarnasparency can be obtained economically. In carboxymethylation of cellulose in the present invention, mercerization is performed in water as the main solvent, after which carboxymethylation is performed in a solvent mixture of water and an organic solvent, By defibrating the resultant carboxymethylated cellulose, a carboxymethylated cellulose nanofiber dispersion having high transparency can be obtained economically.

Method for manufacturing carboxymethylated cellulose nanofiber

A display device has a first electrode provided corresponding to each of a plurality of pixels in a region in which the plurality of pixels is provided, a second electrode provided over the plurality of pixels and extending to a contact region provided outside the pixel region, a light emitting layer provided between the first electrode and the second electrode, a third electrode provided in the contact region, an organic insulating layer covering the third electrode and provided with a contact hole exposing the third electrode, and a connection portion between the second electrode and the third electrode in the contact hole, wherein the maximum distance between any two points on the outer periphery of the connection portion is 1 &#x3bc;m or more and 100 &#x3bc;m or less.

Substrate

Carboxymethylated cellulose nanofibers in which the cellulose type I crystallinity is 60% or higher, the aspect ratio is 350 or lower, and the transmittance of light having a wavelength of 660 nm when the carboxymethylated cellulose nanofibers are made into an aqueous dispersion having a solids fraction of 1% (w/v) is 60% or higher.

Display device

The present invention provides a novel method for producing carboxymethylated cellulose, the method making it possible to economically obtain a high-transparency cellulose nanofiber dispersion. In the carboxymethylation of cellulose, mercerization is carried out in a solvent comprising mainly water, and then carboxymethylation is carried out in a mixed solvent of water and an organic solvent. A nanofiber dispersion of high-transparency carboxymethylated cellulose can be obtained by defibrating the resulting carboxymethylated cellulose.

Method for producing carboxymethylated cellulose and carboxymethylated cellulose nanofibers

A display device in an embodiment includes a first light emitting region; a second light emitting region located at a position away from the first light emitting region by a first distance in a first direction; a third light emitting region located at a position away from the second light emitting region by a second distance shorter than the first distance in the first direction; a first conductive portion located between the first light emitting region and the second light emitting region as seen from a display plane, the first conductive portion having a first width in the first direction, and a second conductive portion located between the second light emitting region and the third light emitting region as seen from the display plane, the second conductive portion having a second width shorter than the first width in the first direction.

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Tokyo, Japan

Yusuke Tada