Panasonic Corporation

Sanyo Electric Co., Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Kenji Date

Koji Aoto

Kazuto Fukuda

Motoki Kinugawa

Shuzo Tsuchida

Yasuhiro Asaida

Takao Kuromiya

Yoshinori Shishida

Fumio Sakamoto

Akihiro Matsuda

A separator includes a separation functional layer and a support layer. The separation functional layer is configured as a denser layer with a smaller pore size and a lower porosity than the support layer. Accordingly, movement of metal foreign objects from the positive electrode plate side to the negative electrode plate side, and precipitation of metal foreign objects on the negative electrode plate side can be inhibited, thereby making it possible to ensure battery performance and safety.

Lithium-ion battery

An electrode active material layer containing an electrode active material and a binder. The binder is distributed in the electrode active material layer such that the amount of the binder increases continuously from an outer surface of the electrode active material layer toward the core. The amount of the binder present in the electrode active material layer per unit thickness is less than 10 in a region extending from a position 90% of the thickness of the electrode active material layer to a position 100% of the thickness of the electrode active material layer from a surface of the electrode active material layer facing the core, with 10 being assigned to the amount of the binder present in the electrode active material layer per unit thickness if the binder is uniformly distributed in the electrode active material layer.

Electrode plate for nonaqueous electrolyte secondary battery, nonaqueous electrolyte secondary battery including the same, and method for manufacturing the same

An electrode active material layer containing an electrode active material and a binder. The electrode active material layer includes a portion containing the smallest amount of the binder in a middle region across the thickness of the electrode active material layer. The binder is distributed in the electrode active material layer such that the amount of the binder increases continuously from the portion toward the core and an outer surface of the electrode active material layer. Preferably, the amount of the binder present in the electrode active material layer per unit thickness is limited to more than 10 in a region extending 10% of the thickness from the outer surface of the electrode active material layer, with 10 being assigned to the amount of the binder present in the electrode active material layer per unit thickness if the binder is uniformly distributed.

An object of the present invention is to provide a plasma display panel that can suppress the generation of cracks in a dielectric layer, and also improve the yield, and a method for manufacturing such a display panel. A dielectric layer on a front panel is designed to have a two-layer structure in which a first dielectric layer and a second dielectric layer are laminated, and the first dielectric layer is formed through processes in which, after printing or applying a dielectric paste containing a glass frit onto a front substrate so as to cover display electrodes formed thereon as a stripe pattern, drying and firing the resulting substrate at a temperature not less than a softening point of the glass frit, and the second dielectric layer is formed on the first dielectric layer by using a sol-gel method.

Plasma display panel and manufacturing method thereof

A method for producing a plasma display panel, a formation of the front-sided dielectric layer comprising the steps of: (i) locally supplying a low-melting point frit material onto a predetermined region of the substrate having the electrode thereon to locally form a low-melting point frit material layer; (ii) heating the low-melting point frit material layer to form a local glass layer therefrom; (iii) supplying a dielectric material over the substrate, covering the electrode and the local glass layer therewith to form a dielectric material layer; and, (iv) heating the dielectric material layer to form a dielectric layer therefrom, wherein a softening temperature of the local glass layer is lower than and equal to a softening temperature of a sealing material to be used for a panel sealing by which the front panel is sealed with a rear panel.

Growing community of inventors

Hyogo, Japan

Kenji Date