Hitachi, Ltd.

Hitachi Displays, Ltd.

Panasonic Liquid Crystal Display Co., Ltd.

Japan Display Inc.

Samsung Display Co., Ltd.

Hitachi Automotive Systems, Ltd.

Tokyo Institute of Technology

Hitachi Vehicle Energy, Ltd.

Future Vision Inc.

Etsuko Nishimura

Hajime Murakami

Masaya Adachi

Kazutaka Tsuji

Kenichi Onisawa

Masao Shimizu

Yoshiro Mikami

Makoto Abe

Masatoshi Wakagi

Shingo Ishihara

Akihide Tanaka

Kikuo Ono

Takaaki Suzuki

Toshio Abe

Kenichi Chahara

Yoshiaki Nakayoshi

Toshiki Kaneko

Katsunori Nishimura

Tetsuro Minemura

Mieko Matsumura

Takeshi Satou

Katsunori Nakajima

Chieko Araki

Mutsuko Hatano

Sukekazu Aratani

Masahiro Ishii

Genshiro Kawachi

Isao Suzumura

Masahiro Tanaka

Shuichi Suzuki

Takeshi Sato

Junichi Hanna

Hiroki Kaneko

Makoto Okai

Junji Tanno

Takuya Takahashi

Katsumi Tamura

Kenji Okishiro

Yasuo Imanishi

Akihiko Noie

Kento Hoshi

Yusuke Kaga

Akiko Kagatsume

Kazuaki Naoe

Ken-ichi Onisawa

Yoshitaka Tsutsui

Shimpei Amasaki

A secondary battery is disclosed. The secondary battery has a bipolar electrode, an electrolyte layer, and a porous insulator. The bipolar layer includes a positive electrode layer formed on one surface of a collector foil and a negative electrode formed on the other surface of the collector foil. The electrolyte layer is famed at least on a surface of at least one of the positive electrode layer and the negative electrode layer. The porous insulator is formed to a lateral surface of at least one of the positive electrode layer, the negative electrode layer, and the electrolyte layer. The electrolyte layer is laminated by at least one layer relative to the bipolar electrode to configure a bipolar battery. The porous insulator also includes an inorganic particle and a reactive agent for lowering a fluidity of the liquid electrolyte bleeding from the electrolyte layer.

Secondary battery

A display device includes a plurality of light-emitting elements aligned on a TFT substrate in a formation of a matrix. The plurality of light-emitting elements each have a flat surface portion and including a light-emitting layer, an anode, and a cathode, an insulating layer formed on the TFT substrate and under the light emitting element, and a tilted metal surface provided on a peripheral area surrounding the flat surface portion of the light-emitting element and having a tilt angle with respect to the flat surface portion of the light-emitting element. The tilted metal surface is provided on a surface of a slope of a bank that is provided on the insulation layer, and a width of a cross-section of the bank becomes smaller as the cross section conies farther away from a surface of the TFT substrate. A counter substrate is placed on the TFT substrate.

Display device including light emitting element and bank having sloped surface

To provide a negative electrode material having a high initial capacity and a long charge and discharge cycle life A negative electrode material according to the present invention contains a particle of a negative electrode active material that occludes and releases lithium ions and a carbon fiber, wherein the negative electrode active material occludes lithium by forming an alloy with the lithium, a surface of the negative electrode active material particle is coated with carbon, and the carbon fiber is bonded to the surface of the carbon via an adhesive resin.

Negative electrode material for lithium ion secondary battery and manufacturing method of the same, negative electrode for lithium ion secondary battery and manufacturing method of the same, and lithium ion secondary battery

Light-emitting element having picture elements

A display device includes a plurality of light-emitting elements aligned on a TFT substrate in a formation of a matrix. The plurality of light-emitting elements each have a flat surface portion and including a light-emitting layer, an anode, and a cathode, an insulating layer formed on the TFT substrate and under the light emitting element, and a tilted metal surface provided on a peripheral area surrounding the flat surface portion of the light-emitting element and having a tilt angle with respect to the flat surface portion of the light-emitting element. The tilted metal surface is provided on a surface of a slope of a bank that is provided on the insulation layer, and a width of a cross-section of the bank becomes smaller as the cross section comes farther away from a surface of the TFT substrate. A counter substrate is placed on the TFT substrate.

Display device having light-emitting elements

Provided is a negative electrode material for a lithium ion secondary battery, which has excellent high-temperature storage characteristics and cycle characteristics. The negative electrode material for a lithium ion secondary battery has a high molecular weight polymer adsorbed on a carbon material, the O/C value of surface functional group quantity is 4.5% or more and 25% or less in the negative electrode material for a lithium ion secondary battery, and the S/C value of surface functional group quantity is 0.05% or more and 2.5% or less in the negative electrode material for a lithium ion secondary battery. Also provided are a negative electrode for a lithium ion secondary battery, lithium ion secondary battery, and methods for producing the negative electrode material, the negative electrode, and the battery.

Negative electrode material for lithium ion secondary batteries, negative electrode for lithium ion secondary batteries, lithium ion secondary battery, method for producing negative electrode material for lithium ion secondary batteries, and method for producing negative electrode for lithium ion secondary batteries

Display device having light-emitting elements including metals

A long-life battery whose properties do not deteriorate after charge-discharges cycles is provided. A non-aqueous electrolyte secondary battery includes a cathode, an anode, and a non-aqueous electrolytic solution containing an electrolyte. At least one of the cathode and the anode includes a binder. The binder includes a layer having electron conductivity on a surface thereof. The binder improves the contact property between particles of the active materials of the battery and the conductivity in the electrode without impairing the binding property of the binder. Preferably, the binder includes a metal on the surface thereof and the metal does not form an alloy with lithium to further improve the lifetime of the battery.

Non-aqueous electrolyte secondary battery

Light-emitting element and display device using same

A lithium ion battery control system includes a degradation rate calculating unit, a degradation rate storage unit, a degradation rate comparing unit, a charging and discharging control circuit, and a rechargeable battery. The degradation rate calculating unit calculates a degradation rate when receiving a trigger for starting the check of the degradation rate of the battery. The degradation rate comparing unit receives a present degradation rate from the degradation rate calculating unit and a previous degradation rate from the degradation rate storage unit and compares both degradation rates. As a result, when the present degradation rate is greater than the previous degradation rate by a predetermined value, a charging and discharging condition is limited.

Lithium ion battery control system and assembled battery control system

An object of the present invention is to provide a lithium ion battery which is excellent in properties at large current and can be applied to applications requiring high output power even when the mixture layers are made thick. The present invention provides a lithium ion battery including a positive electrode including a positive electrode mixture layer formed on a current collector, a negative electrode including a negative electrode mixture layer formed on a current collector and an electrolyte, the positive electrode and the negative electrode being disposed through the intermediary of a separator, wherein the positive electrode includes as a positive electrode active material a lithium composite oxide represented by LiNiMnCOMO(in the formula, M is at least one selected from the group consisting of Fe, V, Ti, Cu, Al, Sn, Zn, Mg, B and W, a+b+c+d=1, 0.2&#x2266;a&#x2266;0.8, 0.1&#x2266;b&#x2266;0.4, 0&#x2266;c&#x2266;0.4 and 0&#x2266;d&#x2266;0.1), the negative electrode includes graphite as a negative electrode active material, the interlayer distance (d) of the graphite is 0.335 nm or more and 0.338 nm or less, the one-side thickness A (&#x3bc;m) of the positive electrode mixture layer is 60 or more and 85 or less, the product A&#xd7;B between the one-side thickness A and the density B (g/cm) of the positive electrode mixture layer is 160 or more and 220 or less, the one-side thickness C (&#x3bc;m) of the negative electrode mixture layer is 40 or more and 75 or less, and the product C&#xd7;D between the one-side thickness C and the density D (g/cm) of the negative electrode mixture layer is 65 or more and 105 or less.

Lithium ion battery

A display device having a plurality of light-emitting elements that construct picture elements aligned on a TFT substrate in a formation of a matrix. The display device includes the plurality of light-emitting elements each having a flat surface portion and including a light-emitting layer, an anode, and a cathode; a plurality of driver elements each coupled to the light-emitting element; a plurality of capacitor elements each of which is coupled to the light emitting element and receives an image signal; a plurality of switching elements each of which is coupled to the capacitor element and the light emitting element and control input of the image signal to the capacitor; and an insulation layer having a contact hole formed over the driver element. The anode is formed on the insulation layer and coupled to the driver element via the contact hole.

An electrode for a lithium-ion secondary battery includes a collector of copper or the like, an electrode material layer being form on one surface and both surfaces of the collector and including an active material and a binder, and a binder-rich layer being formed in a dot shape or a stripe shape with a predetermined interval in the interface between the collector and the electrode material layer and having a binder concentration higher than that of the electrode material layer. Accordingly, a concentration gradient of the binder is provided to the surface of the collector. By arranging the binder-rich layer at a predetermined interval, it is possible to improve the adhesiveness between the collector and the electrode material layer due to an anchor effect and to guarantee conductivity between the collector and the electrode material layer.

Electrode for lithium ion battery, manufacturing method thereof, lithium ion battery, and manufacturing method thereof

A display device having a plurality of light-emitting elements that construct picture elements aligned on a substrate in a formation of a matrix. The light-emitting element includes a light-emitting device having a flat surface portion and including a light-emitting layer and an anode. A driver element is connected with the light-emitting element, and an insulation layer having a contact hole formed over the driver element. The anode is formed on the insulation layer and is connected to the driver element via the contact hole. A tilted reflective surface is provided in a peripheral area surrounding the flat surface portion of the light-emitting device and has a tilt angle with respect to the flat surface portion of the light-emitting device. The tilted reflective surface is provided on a surface of a slope of a bank provided on the substrate and formed to cover the contact hole.

Growing community of inventors

Chiba, Japan

Etsuko Nishimura