Abstract: Systems, methods, and devices of the various embodiments provide for microfabrication of devices, such as semiconductors, thermoelectric devices, etc. Various embodiments may include a method for fabricating a device, such as a semiconductor (e.g., a silicon (Si)-based complementary metal-oxide-semiconductor (CMOS), etc.), thermoelectric device, etc., using a mask. In some embodiments, the mask may be configured to allow molecules in a deposition plume to pass through one or more holes in the mask. In some embodiments, molecules in a deposition plume may pass around the mask. Various embodiments may provide thermoelectric devices having metallic junctions. Various embodiments may provide thermoelectric devices having metallic junctions rather than junctions formed from semiconductors.

Abstract: Systems and methods for generating shadows for a media guidance application are provided. A display of a media asset is generated that includes a media object with a shadow at an object shadow position. Object shadow information is stored corresponding to the shadow of the object and the object shadow position. In response to receiving a user request to access a media guidance application, a media guidance application display corresponding to the user request is selected. A guide shadow is generated based on the stored object shadow information and the media guidance application display. The guide shadow is combined with the media guidance application display for display to the user.

Abstract: A mask frame assembly for thin film deposition and manufacturing method thereof are disclosed. One inventive aspect includes a mask frame, a plurality of first masks and a plurality of second masks. The first and second masks are alternately formed in a first direction. Two overlapped portions of each of the first and second masks are connected to both sides of the non-overlapped portion of each of the first and second mask, respectively. In addition, one overlapped portion of each first mask and one overlapped portion of each second mask overlap each other at a connection area.

Abstract: A cathode ray tube is disclosed, in which a shadow mask satisfies the following condition: Rx<1200 mm or Ry<1200 mm, and further satisfies the following condition: 0<Rd<3000 mm or Rd <?1500. The structural strength of the shadow mask is increased, thereby greatly improving thermal distortion and vibration problems of the shadow mask as well as greatly improving the qualities such as the drop characteristic, doming characteristic and inner pin distortion problem.

Abstract: A mask assembly for a Cathode Ray Tube (CRT) includes a shadow mask with a plurality of beam passage holes, and a frame including a supporting portion with a pair of long sides and a pair of short sides which fix the shadow mask and a strength maintenance portion bent from the supporting portion. The frame includes a plurality of reinforcement indentations formed on a portion of the boundary between the supporting portion and the strength maintenance portion. At least one of the reinforcement indentations satisfies the following condition: S 1 3 ? S 2 ? 2 3 ? S 1 wherein S1 represents an area of a triangle defined by a width of the supporting portion including the reinforcement indentation, a width of the strength maintenance portion including the reinforcement indentation and an imaginary line connecting an end of the supporting portion and an end of the strength maintenance portion, and wherein S2 represents a sectional area of the reinforcement indentation.

Abstract: A shadow mask for a cathode ray tube has an effective screen portion having a plurality of beam passage holes arranged in a predetermined pattern, and an inactive portion with no beam passage holes. The length of a beam passage hole at a column adjacent to a division between the effective screen portion and the inactive portion (hereinafter “the beam passage hole length”) in the long-sided direction is set to be smaller than the length of a beam passage hole placed at the short-sided center of the column. The beam passage hole length “a” at columns which are even-numbered from the long-sided center of the effective screen portion is set to satisfy the condition of 1>a/A?0.45, compared to the length A of the beam passage hole placed at the short-sided center of relevant columns. The beam passage hole length “b” at columns which are odd-numbered is set to satisfy the condition of 1>b/B?0.35, compared to the length B of the beam passage hole placed at the short-sided center of relevant columns.

Abstract: Disclosed herein is a shadow mask for cathode ray tubes. When the width of a smaller hole part of each of slots formed at the shadow mask is defined as Sw, the horizontal distance between the end of a taper-shaped larger hole part facing the panel side of each of the slots, which is adjacent to the edge part of the shadow mask, and the end of the smaller hole part, which is adjacent to the edge part of the shadow mask, is defined as Ta, and the incident angle at which the electron beam passes through each of the slots is defined as ?, the shadow mask has at least one slot through which the electron beam passes at an incident angle ? of above 47 degrees, and the at least one slot through which the electron beam passes at an incident angle ? of above 47 degrees is configured such that the following inequality is satisfied: 1<Ta/Sw<2.

Abstract: In a shadow mask 1 of pressing type, a large number of slots are made in a mask body in the horizontal direction and in the vertical direction. Each slot has a roughly rectangular backside opening, a roughly rectangular front-side opening, and a through-hole that connects these two openings. Between each slot of the multiple slots made in the mask body that is situated at least on either of the two diagonal axes of the mask body but in such a position that the angle at which electron beams enter the slot is 20 degrees or more and another slot that is arranged adjacently to the above slot in the vertical direction, a connecting part connecting the peripheral-side vertical outer edges of the front-side openings of these slots is provided so that it runs through a horizontal bridge part formed between the front-side openings of the slots.

Abstract: A frame for a cathode ray tube including a substantially rectangular frame body having longer and shorter sides, and one or more beads formed on each of the longer frame sides, and one or more beads formed on each of the shorter frame sides, wherein at least one of the beads formed on each of the longer frame sides has a shape different from the shape of the beads formed on each of the shorter frame sides, to increase the rigidity of the longer frame side. The number of the beads formed on each of the longer frame sides may be different from the number of the beads formed on each of the shorter frame sides, to increase the rigidity of the longer frame side.

Abstract: A cathode ray tube includes a tension mask attached to a rectangular mask frame assembly that has two long sides paralleling a central major axis thereof and two short sides paralleling a central minor axis thereof. The two long sides are disposed at generally a right angle with respect to the two short sides with each of the sides connected to form a continuous generally planar support frame having an inner and outer peripheral surface. The support frame is formed of a material having a first coefficient of thermal expansion and includes a detensioning member formed of a second coefficient of thermal expansion on the peripheral surface of at least one side of the frame to facilitate detensioning of the mask.

Abstract: The present invention relates to a color cathode ray tube in which beam landing errors caused by non-uniform thermal expansion of a shadow mask are corrected such that color purity is improved. In one aspect of the present invention, a color cathode ray tube comprises a panel on inner surface of which a phosphor screen is formed; a funnel joined to the panel; an electron gun; a shadow mask mounted to the panel, the shadow mask having a faceplate portion and a peripheral skirt portion bent back from the faceplate portion; and a frame joined to said shadow mask; wherein radius of curvature of at least a corner of the faceplate portion of said shadow mask is not smaller than 50 mm, and gap is provided between a corner of the faceplate portion of said shadow mask and a corresponding corner of said frame.

Abstract: A cathode ray tube includes a shadow mask having a faceplate portion and a skirt portion. The faceplate portion includes an apertured portion. A frame is provided having a supporting portion and a bottom portion that extends by width Da from the short side of the supporting portion. Da satisfies the relation Da<Ha×La/P+Na, where La represents a distance between a center point of the faceplate portion and a short side of the apertured portion, Na represents a distance between the short side of the apertured portion and a short side of the border of the faceplate portion, P represents a distance between the electron beams deflection center and the center point of the faceplate portion, and Ha represents a distance between the short side of the border of the faceplate portion and a short side of a rear end line of the supporting portion.

Abstract: A tension mask frame assembly for a color CRT includes a pair of first and second support members separated a predetermined distance from each other, first and second elastic members installed at end portions of the first and second support members to support the first and second support members, a tension mask installed at the first and second support members such that a tensile force is applied to the first and second support member and having a plurality of electronic beam passing holes formed therein, and a compensation portion installed at the end portions of the first and second support members to make the tensile force applied to the tension mask after heat treatment distributed such that tension at a central portion is greater than that at a surrounding portion.

Abstract: A first frame includes a bottom portion, an inclined portion, a joint portion and a lateral portion for supporting a shadow mask. Between the lateral portion and the joint portion, a space is provided except where the lateral portion and the joint portion are welded. The joint portion is inclined with respect to the lateral portion such that the space enlarges with an increase in the distance from an edge of the lateral portion on the side of supporting the shadow mask. With this configuration, foreign substances can be removed from between the lateral portion and the joint portion in the process of cleaning the first frame, making it possible to both suppress the deterioration of high-voltage withstand capabilities of a color cathode ray tube and prevent the poor welding of the first frame.

Abstract: A shadow mask for a cathode ray tube includes an aperture area having a plurality of apertures passing electron beams, a non-aperture area extending a predetermined distance from a circumference of the aperture area and a skirt extending a predetermined distance from an outside circumference of the non-aperture area and bent at a predetermined angle to the non-aperture area, wherein the aperture area has predetermined curvature radii, and wherein if a curvature radius in a horizontal direction of the aperture area is Rhs, and a curvature radius in a vertical direction is Rvs, the following condition is satisfied, 0.6<Rvs/Rhs<0.8.

Abstract: A color cathode ray tube in which beam landing errors caused by non-uniform thermal expansion of a shadow mask are corrected is provided such that color purity is improved. The color cathode ray tube in accordance with the present invention comprises a panel having a phosphor screen formed on an inner surface thereof, a shadow mask having a faceplate portion and a peripheral skirt portion bent back from the faceplate portion and a frame joined to the skirt portion, wherein a height of the skirt portion is less than or equal to 12 mm for substantially the entire skirt portion, and a plurality of holes are perforated at the skirt portion.

Abstract: A cathode ray tube comprises a panel having a fluorescent formed on an inner surface thereof; a funnel connected to the panel; an electron gun housed in the funnel emitting electron beams; a deflection yoke for deflecting the electron beams in horizontal and vertical directions; a shadow mask for selecting colors of the electron beams; and a mask frame for supporting the shadow mask, in which an outer surface of the panel is substantially flat and an inner surface has a designated curvature, and a radius of curvature from a center of the shadow mask in a major-axis, minor-axis and diagonal-axis direction is substantially same.

Abstract: Color cathode-ray tube comprising a color selection mask tensioned in at least one direction inside a metal frame, the said frame comprising on at least two opposed sides means for damping vibrations of the mask of the type comprising a central part joined to the surface of the frame and two wings extending on each side of the central part and coming into contact with the mask.

Abstract: A tension mask frame assembly for a color cathode ray tube (CRT) includes a frame and a tension mask installed to apply tension to the support members, and wherein a plurality of electron beam passing holes are formed. The frame includes; a pair of first and second support members separated by a predetermined distance; first and second elastic members installed between the first and second support members, and supporting the first and second support members; and first, second, third, and fourth holder units installed on the first and second support members and the first and second elastic members, and respectively including first, second, third, and fourth holders and first, second, third, and fourth springs fixed to the first, second, third, and fourth holders. The thermal expansion coefficient of the material forming the third and fourth holders is no more than that of the material forming the first and second elastic members.

Abstract: A cathode ray tube comprises a panel having a fluorescent formed on an inner surface thereof; a funnel fastened to the panel; an electron gun housed in the funnel, emitting electron beams; a shadow mask for selecting colors of the electron beams; a mask frame for supporting the shadow mask; and a mask spring for coupling the mask frame to the panel, wherein the mask spring is comprised of an fastening portion welded to the mask frame, a attaching portion attached to the panel, and a connecting portion for connecting the fastening portion with the attaching portion, and elongated embossments are formed on a bending portion formed between the fastening portion and the connecting portion.

Abstract: A cathode ray tube includes a color selection apparatus mounted between a phosphor screen and an electron gun, and support members for supporting the color selection apparatus. Each of the support members is formed by a spring including a fixed section secured to the color selection apparatus, a locking section connected to the cathode ray tube, and a center section formed between these elements. The fixed section and the center section are separated by and bent at a first folding trace, and the center section and the locking section are separated by and bent at a second folding trace. Also, if a direction along a width of the springs is X, the first folding trace has an angle ?1 with a straight line drawn on the fixed section along direction X, and the second folding trace has an angle ?2 with a straight line drawn on the center section along direction X, the angle ?2 is greater than the angle ?1.

Abstract: A rail of a flat type cathode ray tube is disclosed, wherein the flat type cathode ray tube comprises a panel having a deposited fluorescent surface therein and of which interior and exterior surfaces are substantially flat, a funnel connected to the panel; a shadow mask arranged with the inner surface of the panel with a predetermined gap, and a rail fixed to the panel and combined with the shadow mask. In the flat type cathode ray tube, if a height of the rail is L, the rail maintains a predetermined gap of 0.1L˜0.3L with the panel and is fixed by a frit glass.

Abstract: A shadow mask has a main mask and an auxiliary mask overlapped on the main mask. Electron beam passage apertures formed in the main mask and the auxiliary mask are arranged at given pitches in the direction of a major axis. Each electron beam passage aperture of the auxiliary mask is a communicating hole, which is formed of a smaller hole in that surface of the auxiliary mask which is in contact with the main mask and a larger hole opening in the opposite surface of the auxiliary mask. The smaller and larger holes of each electron beam passage aperture of the auxiliary mask have their respective central axes extending coaxially with each other and substantially at right angles to the surface of the auxiliary mask in the direction of the major axis.

Abstract: A cathode ray tube is mounted with a reinforcing band for improving landing stability of electron beams and howling of shadow mask and reinforcing an explosion-proof function.

Abstract: A tension mask frame assembly of a color CRT includes a tension mask in which a plurality of electron beam passing holes are formed and a frame. The frame includes a pair of first and second support members separated a predetermined distance from each other and supporting the tension mask so that a tensile force is applied to the tension mask. First and second elastic members are installed between both end portions of each of the first and second support members, supporting the first and second support members to be separated a predetermined distance from each other to compensate for an amount of thermal expansion of the tension mask, and having inclined portions inclined at a predetermined angle. Bars connect the first and second support members and are made of a material having a thermal expansion coefficient smaller than that of the first and second elastic members.

Abstract: A color cathode ray tube has stress-absorbing hole patterns in skirt portions of its color selection electrode. Each of the stress-absorbing hole patterns is composed of a plurality of columns of rectangular through holes, and the columns are arranged in a lengthwise direction of the skirt portions. Each of the plurality of columns of rectangular through holes is composed of rectangular through holes arranged in a widthwise direction of the skirt portions. The relationships in shape of the rectangular through holes among outermost columns, columns next to the outermost columns, and remaining columns is optimized in the stress-absorbing hole patterns.

Abstract: A material for a shadow mask, characterized in that it has a chemical composition: C=0.0030 wt %, Si=0.03 wt %, Mn: 0.1 to 0.5 wt %, P=0.02 wt %, S=0.02 wt %, Al: 0.01 to 0.07 wt %, N=0.0030 wt %, B: an amount satisfying 0.5?B/N?2, and balance: Fe and inevitable impurities, and can form a shadow mask having a coercive force Hc of 90 A/m or less; and a method for producing the material, characterized in that use is made of a raw material having the above chemical composition, the finishing temperature in hot rolling is lower than Ar3 point by O to 30° C., the coiling temperature is 650 to 700° C., and the rolling reduction percentage in the final rolling (secondary cold rolling) is 30 to 45%. The material produced by the method exhibits magnetic characteristics being uniform in a coil and excellent as described above.

Abstract: The present invention relates to a cathode ray tube, and more particularly to a cathode ray tube having a shadow mask for obviating doming phenomenon caused by thermal expansion and deterioration of color purity.

Abstract: A color CRT includes a panel having a fluorescent film formed on an inner surface, a tension mask frame assembly installed in the panel and including a frame including a pair of first and second support members separated a predetermined distance from each other, and first and second elastic members installed between the first and second support members to support the first and second support members and having support portions fixed at the first and second support members and a connection portion to connect the support portions, a mask having electron beam passing holes formed therein and installed such that a tension is applied to the first and second support members, and a correction unit installed at the first and second support members or support portions between the connection portion and the mask, to correct a mis-landing of an electron beam due to thermal expansion of the mask and the frame.

Abstract: A color cathode-ray tube includes a panel having a fluorescent screen on its inside, a funnel which is coupled to the panel and has a cone portion at which a deflection yoke is installed, an electron gun which is installed in a neck portion of the funnel, and a shadow mask frame assembly which is installed at the inside of the panel and includes a shadow mask and a frame. The shadow mask includes an apertured portion which has a plurality of electron beam passage holes, an imperforate portion which extends from and surrounds a periphery of the apertured portion, and a skirt portion which is bent from a periphery of the imperforate portion and has a plurality of etched portions and embossments that are formed in the skirt portion. The frame is partially welded to the skirt portion of the shadow mask to support the shadow mask.

Abstract: Disclosed is a color cathode ray tube which can effectively improve impact resistance by setting a ratio of a curvature coefficient (a/b) of the shadow mask for a long axis to be in a range of about 100,000–135,000, and by setting a ratio of a curvature coefficient (c/d) of the shadow mask for a short axis to be in a range of about 60,000–360,000. Also, in defining ratios between a curvature radius of a center portion of the shadow mask and curvature radiuses along a horizontal direction, a vertical direction, and a diagonal direction, the curvature radius decreases towards the peripheral portions of the shadow mask, thereby improving impact resistance and drop characteristics and thus effectively preventing color purity from being degraded.

Abstract: In a cathode ray tube including a panel provided with a phosphor screen, a funnel integrated with the panel, an electron gun disposed inside the funnel, a magnetic shield (1) for shielding an electron beam (5) emitted from the electron gun against an external magnetic field, and a frame (2) for holding the magnetic shield (1), the magnetic shield (1) includes, at a portion to be joined with the frame (2), a bent portion (20) bent toward a tube axis side, and a thickness T of the bent portion (20) at its edge on the tube axis side is 0.08 mm or less. By making the thickness T small, halation that is liable to occur in a cathode ray tube with a large deflection angle can be suppressed because electron beams reflected from an end face (11) and allowed to reach the screen without being shielded by the frame (2) are reduced.

Abstract: A color picture tube has a compliant tension mask frame assembly mounted within said tube. The tension mask frame assembly includes a peripheral frame including opposing side support frame members and a pair of parallel intermediate members. Each of the intermediate members is attached to the peripheral frame at a single location and the mask is attached to longitudinal edges of the intermediate members. Further included are clips that serve as guides for holding the intermediate members to the frame while permitting expansion of the frame relative to the intermediate members and permitting compliance.

Abstract: A color selection apparatus for a cathode ray tube includes a tension mask including a plurality of electron beam passage apertures; and a frame including a pair of support members provided along opposite sides of the tension mask and applying a tensile force to the mask, and a pair of elastic members extending from one support member to the other at ends of the same, the elastic members maintaining a predetermined distance between the support members. Each of the elastic members is hollow and includes a base that is substantially parallel to the tension mask, with extensions formed substantially perpendicular to the base at both ends thereof, and bending portions integrally formed between the base and the extensions. Reinforcing elements are formed in proximity to the bending portions to increase the strength of the elastic members in the area of the bending portions.

Abstract: A subject of the present invention is to provide for a shadow mask material for a color picture tube with excellent tensile strength and excellent high temperature creep strength, a shadow mask made of the shadow mask material and a color picture tube with the shadow mask. Material for a shadow mask is made from low carbon steel containing manganese of equal or more than 0.60 wt % and aluminum of 0.002 to 0.12 wt %. A shadow mask is made of the material and the shadow mask is installed in a picture image tube.

Abstract: A frame for supporting a tension-type shadow mask of a color CRT, which can increase the contact force of a damper wire at the peripheral portion of the shadow mask thus to improve the howling phenomenon is disclosed. The frame comprises a pair of first frames, each having a portion for supporting a shadow mask, respectively; and a pair of second frames combined with the first frames for applying elastic force to the shadow mask, wherein each of the portions for supporting in the first frames has inflection points where the curvature of the portions for supporting is increased at peripheral portions thereof after the first frames are compressed, for supporting the shadow mask and increasing a friction force for a damper wire at the periphery of the shadow mask.

Abstract: Dynamic vibration absorber in a CRT having a shadow mask fastened to an inside surface of a panel by main frames, including a base part to be fitted to a non-effective surface of the shadow mask, and a vibration absorbing part having one end connected to the base part and the other end designed to make no contact with the shadow mask and the main frame, thereby attenuating vibration of the shadow mask.

Abstract: Color cathode-ray tube comprising a color selection mask (16) held under tension between a first pair of opposed long sides (30) of an approximately rectangular metal frame (21), a main magnetic screen (22) placed at the rear of the frame in the funnel-shaped part (11) of the tube's envelope, and additional means (50) for forming a screen against the Earth's magnetic field in the part lying along the second pair of opposed short sides of the frame.

Abstract: A shadow mask includes an aperture area having a plurality of apertures through which electron beams pass; a non-aperture area extending a from a circumference of the aperture area; and a skirt formed extending from an outer circumference of the non-aperture area at a predetermined angle, wherein the front surface of the aperture area is formed satisfying the following conditions, 100%<RMV?/RMV<110% 120%<RMS/RMV?<150% where RMV is a vertical radius of curvature of the front surface of the aperture area with respect to a vertical direction passing through a center of the aperture area, RMS is a vertical radius of curvature with respect to a short side of the aperture area, and RMV? is a vertical radius of curvature of the front surface of the aperture area with respect to the vertical direction at a location on a horizontal axis passing through the center of the aperture area.

Abstract: A mask-frame assembly for a color cathode-ray tube comprising a first and second support members spaced out a predetermined distance; first and second resilient support members installed between the first and second support members supporting the first and second support members, each at the first and second resilient support members comprising supports fixed to the first and second support members and a connecting portion connecting the supports; a mask installed at the first and second support members such that tension is applied thereto, the mask comprising a plurality of electron beam through holes; and a compensating unit connected between the first and second support members or the supports of the resilient support members between each connecting portion and the mask, the compensating unit being formed of a material having a lower thermal expansion coefficient than the first and second resilient support members.

Abstract: Color cathode-ray tube comprising a color selection mask tensioned in at least one direction, the mask having, on its peripheral area, mask-vibration damper means in the form of a coupled oscillator of the type comprising a metal strip whose ends are welded to the surface of the mask and whose central region comes into contact with the surface of the mask by a spring effect.

Abstract: Color cathode-ray tube comprising a color selection mask (8) placed on a metal frame (19), the said frame comprising, on at least two opposite sides, means of damping vibrations of the mask, of the type comprising two masses (51) connected to the surface of the frame by a connection having a mechanical clearance between the facing surfaces of the mask and of the frame.

Abstract: A color selection apparatus for a cathode ray tube. A mask frame having a pair of supporting members is disposed in parallel and spaced away from each other. A pair of elastic members is disposed between and coupled to the supporting members. A tensioned mask is coupled to the supporting members and is provided with a plurality of beam-passing apertures. A spring assembly includes a hook having a frame fixing part fixed on the mask frame and a spring fixing part and a spring fixed to the spring fixing part. The hook has a cut-away portion defined by cutting a portion of the frame fixing part. The cut-away portion forms a welding portion for welding the hook to the mask frame.

Abstract: A color picture tube includes: a glass panel having a substantially rectangular-frame skirt; a rectangular frame holding a shadow mask; and a support spring elastically supporting the frame inside the skirt and fixed to a first position at inside surface of a long side of the skirt and to a second position at the facing outside surface of the frame. The first and second positions are away in horizontal axis direction perpendicular to tube axis and substantially parallel to the long side. The second position is more away from vertical axis perpendicular to tube axis and horizontal axis than the first position. Materials for the support spring and frame are selected so that, in horizontal axis direction, thermal expansion amount of the support spring between the first and second positions is substantially same as that of the frame between the second position and vertical axis when the tube is operated.

Abstract: A cathode ray tube comprises a panel; a funnel engaged to the panel for forming a vacuous space; and a shadow mask supported in the cathode ray tube by being fixed to a mask frame and including an effective surface having a plurality of electron beam passing holes at a center thereof, an ineffective surface formed at a periphery of the effective surface and not having the electron beam passing holes and a skirt portion extended from the ineffective surface towards a vertical direction thereof and welded to the mask frame. In the cathode ray tube, a slot of a predetermined size is formed between welding points by which the skirt portion is welded to the mask frame, and a height of the slot from an end of the skirt portion is higher than a height of the welding points, thereby reducing a doming effect of the shadow mask, reducing a mis-landing which the electron beam does not land to a precise landing point, and thus preventing a color purity of a screen from being deteriorated.

Abstract: A structure of a slot feature for a shadow mask in which, on the assumption that the width at the point of ½ in a vertical direction in the feature of slots of the shadow mask is ‘Sw’, horizontal distances from a virtual vertical line passing an apex of a concave portion of a slot at a marginal portion to a protrusion portion formed at both upper and lower sides on the basis of the width Sw line are ‘M’ and ‘N’, and angles inclined in the direction of the protrusion portion from the virtual straight line passing the apex of the curved protrusion portion formed at the opposite side of the concave portion are ‘P’ and ‘Q’, there are at least one and more mask slot satisfying a formula of M>0, N>0, P>0°, Q>0°. The shape of electron beams by positions on the screen are identical to each other, and the shape of electron beam at the left and right sides of marginal portion can be maintained in a straight line in the vertical direction.

Abstract: A color cathode ray tube comprising a panel having a substantially flat outer surface, a funnel mounted on a rear side of the panel, a shadow mask including a plurality of electron beam through holes, and a mask frame for supporting the shadow mask, said mask frame satisfying the following condition: d/v?0.9, d/h?0.9 wherein d is a height of a center of a diagonal portion of the mask frame, h is a height of a center of a short side portion of the mask frame, and v is a height of a center of a long side portion of the mask frame.

Abstract: The present invention provides an improved support blade structure for use on a tension mask frame assembly. The support blade structure is formed of a material having a first coefficient of thermal expansion and includes fastening portions and an insert member connected at a generally central location to the support blade structure. The insert member is formed of a material having a second coefficient of thermal expansion and has a plurality of apertures extending in a row along its length. The aperatures are dimensioned to be larger than the fastening portions passing therethrough to loosely connect the insert member to the support blade structure. This allows the insert member to be connected at the center while it's end are free to slide relative to the support blade structure during thermal cycling.

Abstract: A mask frame assembly in a cathode ray tube is capable of minimizing a howling phenomenon and preventing local wrinkles of a shadow mask by optimizing positioning of compression of the mask frame assembly. A mask frame assembly for applying optimal tension in a cathode ray tube includes a shadow mask for selecting color and a frame assembly having a main frame for applying tension to the shadow mask and a sub-frame for supporting the main frame, wherein each of compression points of the main frame is set to satisfy the following expressions, (L/2)×0.38?X1?(L/2)×0.52, and (L/2)×0.80?X2×(L/2)×0.98, where L is a length of a long side of the main frame, X1 and X2 are distances from the center of the main frame to each of compression points P1 and P2 in both sides.

Abstract: A color picture tube is provided with a glass bulb in which the external surface of the effective display area of the face plate is formed substantially flat and a color selection mask, having the curvature projected toward the face plate, provided opposed to the internal surface of the face plate within the glass bulb. Therefore, the external surface is flat, the mechanical shock resistance characteristic is high, a tension can surely be applied to the color selection mask and moreover vibration of the color selection mask can be prevented even if external vibration is applied thereto.