摘要:
A plasma display panel comprises a front substrate and a rear substrate, a plurality of row electrode pairs provided on the inner surface of the front substrate, a dielectric layer provided on the inner surface of the front substrate for coverring the row electrode pairs, a plurality of column electrodes provided on the inner surface of the rear substrate, a partition wall assembly provided between the front substrate and the rear substrate, said partition wall assembly including a plurality of longitudinal partition walls and a plurality of lateral partition walls, forming a plurality of discharge cells. In particular, the dielectric layer has a plurality of projection portions located corresponding to and protruding toward the lateral partition walls of the partition wall assembly, in a manner such that there would be no slots formed between the dielectric layer and the lateral partition walls.
摘要:
A liquid crystal display apparatus having a diffusion plate and/or a prism sheet disposed between a liquid crystal display device and a plurality of light emission portions. Each light emission portion is constituted by an optical guide and one or more light emitting devices. The optical guide has a light reflection surface formed in a substrate and a light transmission surface brought into tight contact with the light reflection surface. The light emitting devices are integrated with the optical guide. Then, the light reflection surface is a scatter reflection surface, and an average angle between the light reflection surface and the light transmission surface is set to range from 7° to 23°. Thus, obtained is a thin-type liquid crystal display apparatus high in luminance of light outgoing to the front surface of the display apparatus and superior in uniformity of outgoing angle distribution or luminance distribution.
摘要:
A plasma display panel includes: a plurality of row electrode pairs (X, Y) provided on a front glass substrate (10); a protective layer (12) on the front glass substrate (10); and a plurality of column electrodes (D) provided in a back substrate (13) at intersections with the row electrode pairs (X, Y) to form discharge cells (C) in the discharge space (S). An ultraviolet region light emissive layer (17) having persistence characteristics allowing continuous emission of ultraviolet light as a result of excitation by ultraviolet rays having 0.1 msec or more of a wavelength is provided at a site facing each discharge cell (C) between the front glass substrate (10) and the back glass substrate (13).
摘要:
The present invention relates to a disc drive apparatus capable of preventing skew or wobble from occurring when a spindle motor is attached to a base. The disc drive apparatus according to the present invention comprises: a turntable 22 which holds an optical disc 2; a spindle motor which rotatively drives the turntable 22; an optical pick-up 20 which writes/reads signals on or from the optical disc 2; guide shafts 42a and 42b which slidably supports the optical pick-up 20 in the radial direction of the optical disc 2, and a base 15 to which a spindle motor 23 and both end portions of each of the guide shafts 42a and 42b, wherein the spindle motor 23 is attached to the base 15 through a spacer member 28 which performs positioning of the turntable 22 in the vertical direction thereof relative to the base 15.
摘要:
In a plasma display panel, studs or second ribs are provided on the inner surface of a back side substrate. Each stud faces an edge portion of the associated one of projecting portions of the associated one of pairs of row electrodes far from a discharge gap therebetween and faces the associated one of body portions of the associated pair of row electrodes in the vicinity of the associated projecting portion. The studs are designed to be in contact with the dielectric layer.
摘要:
Provided are paint films with outstanding paint film performance traits such as water resistance and chemical resistance, etc., and outstanding finished appearance. The water-based paints are easy to apply and have outstanding storage stability. The invention further provides an acrylic graft copolymer obtained by reacting a acrylic copolymer (a) of acid number 35 to 120 mg KOH/g, hydroxyl group number 50 to 150 mg KOH/g, glass transition temperature -20 to +50.degree. C. and number average molecular weight 4500 to 9000, and a monomer combination (b) comprising an unsaturated monomer (b1) containing a glycidyl group and an unsaturated monomer (b2) containing a hydroxyl group to give an acid number of .ltoreq.15 mg KOH/g and a hydroxyl group number of 50 to 150 mg KOH/g. Copolymer (a) and monomers (b) are reacted in specified proportions in a single stage to make the claimed water-dispersible acrylic graft copolymer which has an acid number of 10 to 30 mg KOH/g, a hydroxyl group number of 50 to 150 mg KOH/g, a glass transition temperature of -20 to +50.degree. C. and a number-average molecular weight of 10,000-100,000 by grafting side chains formed from the aforementioned (b) to a main chain from the aforementioned (a), and this graft copolymer is dispersed in an aqueous medium to obtain the claimed water-based paint.
摘要:
A water-based paint composition comprising (A) from 10-90% by weight, based on total weight of resin solids of a water-dispersible acrylic graft copolymer having an acid value of 10-30 mg and a hydroxyl value of 50-150, wherein the polymer is obtained by graft polymerization of an acrylic copolymer of an acid value of 35-120 mg KOH/g and a hydroxyl value 50-150 mg KOH/g, and an acrylic copolymer of acid value .ltoreq.15 and a hydroxyl value of 50-150, and (B) from 10-90% by weight, based on total weight of resin solids of internally non-crosslinked acrylic fine particles having an acid value 15-200 and a hydroxyl value of 15-200 made by emulsion polymerizing .alpha.,.beta.-ethylenically unsaturated monomers.
摘要:
An optical disc has a recording film with information recorded thereon, and a photochromic material film provided adjacent the recording film. The photochromic material film is made of a photochromic material. The photochromic material has a first state irradiated with reading light having a first wavelength. In the first state, the transmittance of the material is increased so as to enable reading of the recorded information. The photochromic material further has a second state irradiated with auxiliary light having a second wavelength, where the transmittance becomes low so as to disable the reading of the recorded information.
摘要:
A photochromic optical disk read/write apparatus is provided having, in addition to the beams of light for reading and writing, a tracking light beam which is used for tracking during the reading, erasing, and writing of information signals and a standby state so that deterioration in the recording medium quality can be lessened.