Abstract:
PROBLEM TO BE SOLVED: To provide an image display device having enhanced image quality by preventing an electron beam from being deviated from its course, and to provide a method of manufacturing the same. SOLUTION: This image display device is equipped with a first substrate 10 having an image display surface and a second substrate provided with a plurality of electron sources 18 to excite the image display surface, and a plurality of spacers 30a, 30b to support an atmospheric pressure load acting on a plate like grid 24 and these substrates are provided between the first and second substrates. An insulating layer 40 is formed on the surface facing the second substrate of the grid, and a conductive layer 42 electrically connected to the spacers to let the electron on the spacer escape is formed on the insulating layer. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a flat image display device and a manufacturing method of an image display device that can reduce thickness and weight and can reduce manufacturing cost. SOLUTION: A vacuum envelope 15 comprises a first substrate 10 provided with an image display surface 16, and a second substrate 12 opposed to the first substrate at a clearance and provided with a plurality of electron sources 18. The second substrate is formed from a metallic substrate 50 coated with an insulating layer 52 over a mounting surface with the electron sources. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide an image-display device in which deviation of orbit of an electron beam is prevented and quality of the images is improved without causing a rise of temperature and increase in the power consumption, and a method of manufacturing the same. SOLUTION: The image-display device consists of a first substrate 10, which has an image-display face and a second substrate, which is oppositely arranged to the first substrate with a gap and in which two or more electron sources 18 that excite the image-display face are provided. Between these first substrate and second substrate, a plurality of spacers 30a and 30b which supports the atmospheric pressure load that acts on these substrates is prepared. Between the second substrate side tip end of the spacer and the second substrate, a conductor 33 which repels the electron beams emitted from the electron source is provided. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide an image display device having an improved image quality by preventing the orbit of electron beam from deviation. SOLUTION: The image display device comprises a face plate 12 having an image display surface, a rear plate 10 located so as to face the face plate 12 with a gap, on which, a plurality of electron source 18, crossing at right angle to each other with a prescribed pixel pitch in X-direction and Y-direction, exiting the image display surface, and a plurality of spacers 30a, 30b arranged between the face plate and the rear plate. The spacers are arranged with a pitch several times that of the pixels in X-direction, and at least at a partial area of the image display surface, the spacers are arranged with a pitch same as that of the pixels in Y-direction in line with the electron sources, and the spacers are arranged on both sides of respective electron sources so as to sandwich the electrons emitted from respective electron sources. COPYRIGHT: (C)2003,JPO
Abstract:
PURPOSE:To effectively decrease the occurrence of color displacement and howling by using a composite material having a high thermal expansion coefficient and a high elasticity coefficient. CONSTITUTION:A shadow mask 1a comprises a composite material 9 which has an invar 6 as a core material and which has ferrous layers 7, 8, serving as mating laminate materials, integrally bonded to both surfaces of that core material, the composite material being formed with a number of electron beam passage holes 3a by etching treatment. The total thickness of the ferrous layers 7, 8 as mating laminate materials is set at a value which is 0.54 to 0.8 time as large as the thickness of the invar 6 as core material.
Abstract:
PURPOSE:To obtain a level with a high refractive index not obtained by a conventional optical lens by constituting the device such that the optical lens consists of a hollow cell with a liquid filled therein to support the lens outer shape and the liquid sealed in the cell and the liquid is a mixed liquid comprising two kinds or over of liquids whose refractive index differs from each other. CONSTITUTION:An optical lens 12 to magnify a picture on a fluorescent screen of a cathode ray tube 1 and projecting the picture consists of a hollow cell 15 with a liquid filled therein to support the lens outer shape and a liquid 16 sealed therein and the liquid 16 comprises a mixed liquid comprising two kinds or over of liquids whose refractive index differs from each other. Thus, the lens with a high refractive index not obtained by a conventional optical lens made of a glass or a plastic only is realized, a desired refractive index is obtained by selecting the sealed liquid and adjusting the mixture ratio and the degree of freedom of the design of the projection optical system is improved and a high performance lens is easily designed and manufactured.
Abstract:
PURPOSE:To reduce the quality deterioration of an image screen, by making the average pitch of the projections and the recesses of a transparent membrane almost equal to that of a glass panel surface, and the average height of the projections and the recesses of the membrane smaller than that of the panel surface. CONSTITUTION:A transparent membrane 3 is formed in an uneven surface by the unevenness of a glass panel 1 surface. In this case, the average pitch of the recesses 31 and the projections 32 of the transparent membrane 3 is made almost equal to that of the recesses 11 and the projections 12 of the panel 1 surface, while the average height of the recesses 31 and the projections 32 of the membrane 3 is made smaller than that of the recesses and the projections 11 and 12 of the panel 1 surface. Therefore, the smallest necessary amount of the transparent membrane 3 is secured in order to make the initial quality of the image at the level of the ordinary one, the exposed membrane over the projections 12 of the panel 1 is reduced, and the membrane amount in the recesses 11 is increased. Consequently, even though the panel is brought in contact with various substances in such a condition, the rate of the hurt of the membrane 3 is reduced, since the membrane amount exposed on the projections 12 is smaller, and the deterioration of the image screen quality is decreased even for a long service time.
Abstract:
PURPOSE:To make brightness, contract, hue etc. among small areas quite easily adjustable from each other by forcing a single electron beam emitted from an electron gun to be deflected a little so as to be divided in plural numbers of electron beams, in a color receiving set of shadow mask type with its screen to be scanned across plural numbers of fractionated small areas. CONSTITUTION:Each of electron guns 6-1, 6-2,... distributed at an electron gun part 6, radiates respectively an electron beam 15. Each of these electron beams 15 performs horizontally as well as vertically deflecting scanning at a given area on a screen 2 by means of main deflecting yokes 7-1, 7-2,... with given periods TH, TV, At this time, one single vertical deflection is performed for plural times of horizontal one and synchronizing with this vertical deflecting period, each of auxiliary deflecting yokes 8-1, 8-2 performs a little deflection so as to give 3 lines of electron beams 15-R, 15-G, and 15-B which are substantially isolated by a given distance from each other on a central deflecting plane by means of the main deflecting yoke stated above, thereby changing a kind of image signal to be put in an electron beam.
Abstract:
PURPOSE:To intend to improve the shockproofness of the elastic holder and the industrial mass productivity by making the elastic direction of the elastic holder identical or parallel to the bisector of the angle between the both sides of the panel forming its corner part. CONSTITUTION:The elastic holder 8 and the stud pin 10 are generally arranged so as the central axis 24 of the circular cone 11 cut the top off of the stud pin to be perpendicular to the plane of the supporting part of the elastic holder 8. Hence, when the stud pin 10 is planted the elastic direction of the elastic holder 8 is made coincident to the direction of the central axis 24 of the circular cone 11 cut the top off, that is identical to the bisector of the angle between the both sides of the panel forming its corner part. Therefore, the longitudinal and transversal shockproofness in the plane of the glass panel 2 can be made equal. Thereby the shockproofness of the elastic holder 8 can be improved and the color picture tube excellent in the industrial mass productivity and the economic efficiency can be obtained.
Abstract:
PURPOSE:To form a color cathode-ray tube of large shape and high resolution, by properly arranging many small electron-gun parts and composing a screen part and shadow mask corresponding to them, in united composition. CONSTITUTION:On a side wall part of a face plate 3 with a screen 2 being equipped with many phosphors 12 whose phosphor stripes R, G, and B serve as one group, small electron gun parts 6-1 to 6-12 are arranged inside many necks 5-1 to 5-12 coupled through a funnel 4, to compose a color cathode-ray tube 1. And, a shadow mask 10 is formed so that an effective part 18 having apertures is divided into small areas 18-1 to 18-2, against an ineffective part 17-1 having no aperture 9. Therefore, even if each electron gun 6 is deflection- scanned excessively, the neighboring screen part is not affected and a cathode- ray tube, which is both large and easy to watch, can be obtained.