Abstract: In a charge/discharge control method of a lithium ion battery having a negative electrode active material and connected to a charge/discharge control device, battery information regarding a charge/discharge state of the lithium ion battery is acquired by the charge/discharge control device, a degradation state of the lithium ion battery is determined on the basis of the battery information, by the charge/discharge control device, and a voltage range for charge/discharge of the lithium ion battery is changed on the basis of a determination result of the degradation state, by the charge/discharge control device.

Abstract: A lithium secondary battery having a positive electrode, a negative electrode, and an electrolyte, wherein the positive electrode is constituted by a positive electrode mixture layer containing a positive electrode active material, a binder, and a conductive agent being formed on a positive electrode collector, the negative electrode is constituted by a negative electrode mixture layer containing a negative electrode active material, the binder, and the conductive agent being formed on a negative electrode collector, and the conductive agent contained in both of the positive electrode mixture layer and the negative electrode mixture layer is a fibrous conductive agent or a mixture of the fibrous conductive agent and a particulate conductive agent and an aspect ratio of the fibrous conductive agent is 20 or more.

Abstract: In a charge/discharge control method of a lithium ion battery having a negative electrode active material and connected to a charge/discharge control device, battery information regarding a charge/discharge state of the lithium ion battery is acquired by the charge/discharge control device, a degradation state of the lithium ion battery is determined on the basis of the battery information, by the charge/discharge control device, and a voltage range for charge/discharge of the lithium ion battery is changed on the basis of a determination result of the degradation state, by the charge/discharge control device.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A transflective liquid crystal display includes a first substrate, a second substrate, and liquid crystal intercalated between the first and second substrates in which each pixel includes a reflection area and a transmission area. The second substrate includes pixel electrodes and common electrodes to drive the liquid crystal. In the reflection area, a reflective layer is arranged between the pixel and common electrodes and the second substrate, and a polarizing layer is disposed between the pixel and common electrodes and the reflective layer.

Abstract: Objects of the present invention are to improve the adhesion and processing characteristics of electrode composite layers and to provide a lithium secondary battery by which a decrease in battery capacity during high-temperature storage at 50° C. or higher is suppressed. The lithium secondary battery of the present invention comprises a positive electrode capable of storing and releasing lithium ions, a negative electrode capable of storing and releasing lithium ions, a separator disposed between the positive electrode and the negative electrode, and an electrolyte, wherein the negative electrode or the electrolyte contains a nonvolatile liquid.

Abstract: In a transflective liquid crystal display device having a first substrate, a second substrate, a liquid crystal layer disposed between the two substrates and a reflective region and a transmissive region in each pixel; the second substrate has a pixel electrode to drive the liquid crystal layer and a common electrode; the reflective region of the second substrate is formed with an in-cell polarizer between the pixel electrode and common electrode and the reflector. In this invention, the thickness of the liquid crystal layer is set greater in the reflective region than in the transmissive region. The difference in the liquid crystal layer thickness between the reflective region and the transmissive region is provided by forming a step in the first substrate or the second substrate.

Abstract: A liquid crystal display device includes light source sections 150, a light guide plate 130 guiding light of the light source sections from a side edge and including a light emitting surface, and a liquid crystal panel 200 including a lower polarizer 230 opposed to the light emitting surface. The lower polarizer has a transmission axis generally along a light guide azimuth in which the light guide plate guides the light. The light guide plate includes a polarization converting section 131 on at least one of the light emitting surface and a rear surface. The polarization converting section reflects light made incident from the light guide azimuth in a different traveling azimuth and further reflects the light reflected in the different traveling azimuth to bring the traveling azimuth closer to the light guide azimuth to thereby convert polarization of the light traveling from the light guide azimuth.

Abstract: Provided is an illuminating device (1) including: a light source (10); a light-guide-plate (20) received light from the light source at a side surface of the light-guide-plate and outputting from a front surface of the light-guide-plate; and reflector (30) disposed on a rear surface side of the light-guide-plate. The light-guide-plate outputs light having a peak of a luminance at an output angle inclined with respect to a normal line of the front surface. A part of the light output at the angle is made obliquely incident on the front surface at an angle smaller than a critical angle to be reflected in the light-guide-plate and, then, when the part of the light obliquely travels to the rear surface and to return to the front surface, polarized light components are converted so as to contain more p-polarized light components than s-polarized, and the part of the light is output.

Abstract: An illuminating device includes: a light guide plate for outputting light, which enters the light guide plate from one side surface, from a front surface of the light guide plate; an optical sheet disposed on the front surface of the light guide plate; and a reflection sheet disposed on a rear surface of the light guide plate. The optical sheet includes prism arrays which are provided on a surface of the optical sheet opposite to the light guide plate, and each of which has at least two inclined surfaces and a ridge line extending in one direction. The light guide plate changes a polarization state of light that is reflected by the surface of the optical sheet, is transmitted through the light guide plate, is reflected by the reflection sheet, is transmitted through the light guide plate again, and then enters the optical sheet.

Abstract: In a transflective liquid crystal display device having a first substrate, a second substrate, a liquid crystal layer disposed between the two substrates and a reflective region and a transmissive region in each pixel; the second substrate has a pixel electrode to drive the liquid crystal layer and a common electrode; the reflective region of the second substrate is formed with an in-cell polarizer between the pixel electrode and common electrode and the reflector. In this invention, the thickness of the liquid crystal layer is set greater in the reflective region than in the transmissive region. The difference in the liquid crystal layer thickness between the reflective region and the transmissive region is provided by forming a step in the first substrate or the second substrate.