Sony Corporation

Nok Corporation

Ibaraki Steel Center Co., Ltd.

Satoshi Sato

Eiji Ohta

Toru Abiko

Yasuyuki Kudo

Akihiro Horii

Shinichi Matsumura

Hirokazu Odagiri

Shogo Shinkai

Hiroshi Mizuno

Hiroshi Ichigaya

Tatsuya Harima

Andrew Chakchung Yu

Taro Omura

Minoru Yamaga

Norimasa Furukawa

Masayasu Kakinuma

Katsunori Maeshima

Noriyuki Hirai

Yuichi Arisaka

Masaharu Senoue

Yasuhiro Nishida

Masato Ishigaki

Kiichiro Goto

Yu Andrew Chakchung

Yoshiyuki Kanzaki

Takumi Ohhara

Kenichi Sasaki

Wataru Okawa

Satoshi Kawamura

Masakazu Ooka

Yoshiki Hiyama

Kentaro Tanabe

Yoshihisa Yamazaki

Fumiko Sasaki

An optical sheet, a backlight device, and a liquid crystal display device are provided. The beam-condensing optical sheet includes a large number of irregularity portions arranged on one main surface of a light-transmissive base, in which a pitch of arrangement of the irregularity portions is 110 &#x3bc;m or more and 330 &#x3bc;m or less, and surface roughness (Ra) of the irregularity portion is 0.1 &#x3bc;m or less.

Optical sheet having irregularity portions, backlight device with optical sheet, and liquid crystal display device including a backlight device with optical sheet

A liquid-crystal display that can inhibit the coloring of an image when a liquid-crystal panel is viewed from an oblique direction is provided. An optical filter is disposed at the forward end of a liquid-crystal panel and has different transmittances between a light component that travels in an oblique direction and a light component that travels in a direction normal to the multilayer, where both of the light components have a predetermined wavelength range. In the case where a wide-color-gamut light source, such as LEDs, is used as a light sources of a backlight unit, when the liquid-crystal panel is viewed from an oblique direction, the entire image area tends to be reddish, and the color temperature tends to decrease. In this case, the optical filter is configured such that the intensity of a visible red light component is selectively reduced such that the intensity of a visible blue light component is increased, thereby inhibiting the reddening of an image area when viewed from an oblique direction.

Optical element, liquid crystal panel, and liquid crystal display

An optical packaged body capable of preventing generation of a wrinkle, deflection, and warpage, and capable of being thinned is provided. The optical packaged body includes a support medium and a packaging film that covers the support medium in a state of being applied with shrinkage force. The packaging film has an optical function section that acts on light from a light source in at least one of a first region into which the light from the light source enters and a second region from which the light from the light source is emitted after passing through the optical packaged body when the light source is arranged on one face side of the optical packaged body.

Optical packaged body, method of manufacturing it, illuminating device, and display unit

The problem to be solved by the present invention is to clear up an eccentric load onto a pin and a problem of deformation and cavity due to flowing material during extrusion when spring washer blind-holes in a piston for an automobile transmission are formed by extrusion with a pin. After an annular region along the peripheral edge portion on the back of an end plate of a secondary workpiece is flattened, the secondary workpiece is set on a lower die. Further, while the lower die is pressed with upper dies and cushion pressure is applied on the lower die, pins, for piercing the spring washer blind-holes are made to perform an extrusion operation onto the end plate of the secondary workpiece from the backside of the end plate. The extruded material is made to flow into recess holes of the upper die, and thus spring washer blind-holes are formed. Then, projections which have flowed and protrude on the front side are removed by turning with a lathe.

Method of forming spring washer blind-holes into a piston for an automobile transmission

An optical element covering member capable of improving insufficiency in rigidity of the optical element while an increase in thickness of a liquid crystal display device or deterioration of display characteristics of the liquid crystal display device is reduced, a backlight provided with the optical element covering member, and a liquid crystal display device are provided. The optical element covering member includes at least one optical element, a support medium for supporting the at least one optical element, and a covering member for covering the at least one optical element and the support medium. The at least one optical element and the support medium constitute a stack.

Optical element package, backlight, and liquid crystal display device

An optical packaged body capable of preventing generation of a wrinkle, deflection, and warpage, capable of being thinned is provided. The optical package body includes a support medium and a packaging film that covers the support medium in a state of being applied with shrinkage force. The packaging film has an optical function section that acts on light from a light source in at least one of a first region into which the light from the light source enters and a second region from which the light from the light source is emitted after passing through the optical packaged body when the light source is arranged on one face side of the optical packaged body.

Optical element package

In a method in which the inside surface of the negative electrode cup of an alkaline battery is coated with metal or metal alloy having a higher hydrogen overpotential than copper, the mask used for coating processing has the shape in which: when d is the diameter of the negative electrode cup, t is the plate thickness of the negative electrode cup, A is the diameter of the mask opening on the negative electrode cup mounting side, B is the diameter of the mask opening on the negative electrode cup supplying side, h is the depth of the negative electrode cup, C is the thickness of mask on negative electrode cup mounting side, and D is a tapered angle of the mask opening on the negative electrode cup, 2(2t+d)&#x2212;B&#x3e;A &#x2267;0.7d, (A/2)&#x2212;h&#x2267;C&#x3e;0 mm, and 90&#xb0;&#x3e;D&#x2267;45&#xb0; are satisfied to coat only the inside surface area except a cuff portion and cuff bottom portion.

Method for manufacturing alkaline battery

A magnetic tape cartridge and A magnetic tape cartridge recording/reproducing apparatus, which can prevent a magnetic tape from being charged to avoid damage of a magnetic head while lowering the resistance of the magnetic tape and maintaining optimum electromagnetic conversion properties. A tape reel () is formed from a conductive material, and one end portion of a magnetic tape () connected to a reel hub (B) has a surface resistivity [&#x3a9;/sq] in the order of 10or less. In the magnetic tape () having a multilayer structure which comprises a magnetic layer (), a nonmagnetic conductor layer (), a plastic film (), and a back coat layer () from the magnetic surface (M) side, even when the surface resistivity of the magnetic layer () exceeds 10&#x3a9;/sq, the magnetic layer () is removed and the exposed nonmagnetic conductor layer () is connected to the reel hub (A), thus lowering the resistance of the magnetic tape while maintaining optimum electromagnetic conversion properties.

Magnetic tape cartridge and recorder/reproducer a magnetic tape cartridge

It is a magnetic recording medium for which favorable values for all of reproduced output, noise level and error rate can be obtained, and which is also superior in terms of storage stability. A magnetic recording medium (), which has a configuration in which a magnetic layer () comprised of a maghemite thin film containing cobalt is formed on a tape-shaped substrate () comprised of aromatic polyimide, and in which the substrate () is 3 to 10 &#x3bc;m in thickness, and 5 to 30 nm in its ten-point average roughness (SRz) of the surface on which the magnetic layer () is formed, and the magnetic layer () is 10 to 50 nm in thickness, 0.1 to 3.0 nm in center plane average thickness (SRa), and 2,000 to 4,000 Oe (158,000 to 316,000 A/m) in in-plane coercivity, is made.

Magnetic recording medium and method of manufacturing a magnetic recording medium

A magnetic recording medium exhibiting satisfactory electromagnetic conversion characteristic and movement characteristics and incorporating a non-magnetic support member made of aromatic polyamide film. The magnetic recording medium incorporating a non-magnetic support member having a principal plane on which a magnetic layer constituted by at least a thin metal film is formed, wherein said non-magnetic support member has said principal plane on which at least said thin metal film is formed and on which small projections, the height of each of which is 10 nm to 40 nm from the central surface, are formed at a density of 1,000,000 pieces/mm to 20,000,000 pieces/mm , and a bearing curve of the principal plane of said non-magnetic support member on which said small projection have been formed is such that the gradient of a straight line is &minus;0.3 or smaller when a range of 10 nm in the upper portion is linearly approximated with a straight line by a least square approximation and the intercept is 10 nm to 40 nm.

Magnetic recording medium

A magnetic recording medium exhibiting an excellent electromagnetic conversion characteristic and a satisfactory movement characteristic if an aromatic polyamide film is employed as a non-magnetic support member thereof. The magnetic recording medium according to the present invention incorporates a non-magnetic support member on which a magnetic layer constituted by a thin metal magnetic film is formed, wherein at least either main surface of the non-magnetic support member has small projections, and the either main surface of the non-magnetic support member having the small projections formed thereon has a kurtosis (Ku) which is 10.0 to 50.0, average roughness Ra at the central surface of either main surface of the non-magnetic support member is 1.0 nm to 5.0 nm, and average roughness Rz of ten points on either main surface of the non-magnetic support member is 15 nm to 50 nm.

A magnetic recording medium capable of realizing satisfactory workability in a process for manufacturing a non-magnetic support member and the magnetic recording medium, preventing deterioration in the surface characteristic of the magnetic layer caused from transcription of the reverse side so that both excellent electromagnetic conversion characteristic and moving easiness are realized. The magnetic recording medium has a non-magnetic support member; and a magnetic layer in the form of a thin metal magnetic film formed on the non-magnetic support member, wherein the non-magnetic support member is in the form of a laminate composed of a plurality of layers, the magnetic layer is formed on a first layer of the plural layers, and the surface roughness of a surface of a second layer opposite to the surface of the second layer on which the first layer is formed is made in such a way that SRa=3 nm to 12 nm and SRz=40 nm to 300 nm.

A convergence measurement apparatus for a color CRT comprising a light sensor which is placed on the face of a CRT to be tested, a CPU, and a pattern generator which causes a plurality of luminescent lines of a primary color to be displayed on one area of the CRT screen and a plane area comprised of a composite of the two other primary colors to be displayed on another area of the screen. The plurality of lines are shifted at a given rate along the designated area of the screen, the color of the displayed lines successively changing to show each primary color. The light sensor receives light intensity information from the generated pattern and the CPU calculates a mis-convergence value based on the light intensity data. The apparatus further includes a self-inspection feature by which the processing is executed for successive measurement of the same primary color. If the values for each measurement are identical the system is assumed to be operating normally and if there is variation, abnormal operation can be diagnosed.

Self-inspecting convergence measuring apparatus

An adjusting apparatus for cathode ray tube equipment for convergence and/or image distortion adjustment which includes a pattern generator connected to a cathode ray tube to be measured and which generates a predetermined pattern having a plurality of bars and a white area, a probe attached to a front face of the cathode ray tube to be measured, and which includes a photo detector and a switch for starting measurement, an analog-to-digital converter connected to the probe, a measured data memory connected to an analog-to-digital converter for storing data received by the probe, a processor for controlling the pattern generator, receiving data from the measured data memory, and calculating the data according to various measurement routines.

Growing community of inventors

Miyagi, Japan

Satoshi Sato