Abstract: A controlled thermal coefficient product manufacturing system and method is disclosed. The disclosed product relates to the manufacture of metallic material product (MMP) having a thermal expansion coefficient (TEC) in a predetermined range. The disclosed system and method provides for a first material deformation (FMD) of the MMP that comprises at least some of a first material phase (FMP) wherein the FMP comprises martensite randomly oriented and a first thermal expansion coefficient (FTC). In response to the FMD at least some of the FMP is oriented in at least one predetermined orientation. Subsequent to deformation, the MMP comprises a second thermal expansion coefficient (STC) that is within a predetermined range and wherein the thermal expansion of the MMP is in at least one predetermined direction. The MMP may be comprised of a second material phase (SMP) that may or may not transform to the FMP in response to the FMD.

Abstract: A deposition mask assembly includes: a mask in which a deposition pattern is formed and a mask frame fixed to an edge of the mask, an opening being formed at a center of the mask frame. A first surface of the edge of the mask and a first surface of the mask frame adjacent to the opening which face each other are welded to each other.

Abstract: A transparent protection window, a flexible display apparatus, and associated method, the transparent protection window including a first area extending in one direction, the first area having a first thickness; a second area extending in a direction different from that of the first area, the second area having a second thickness; and a third area connecting the first area to the second area, the third area including a portion having a curved surface, wherein the first thickness of the first area is less than the second thickness of the second area.

Abstract: A holder for a cathode ray tube includes a stud engaging portion having an engaging hole in order to be engaged to a stud pin mounted inside a panel, a frame engaging portion engaged to a mask frame which supports a shadow mask, and a connecting portion for connecting the stud engaging portion and the frame engaging portion. Lower end surfaces of a pair of holders are arranged facing toward each other so that the lower end surfaces of the connecting portion are in substantial contact with each other.

Abstract: A cathode ray tube includes an electron gun for emitting at least one electron beam; a mask frame include a mask having a plurality of holes or slits for allowing the electron beam to be transmitted therethrough and a frame to which the mask is attached; and a panel including a phosphor layer to be scanned by the at least one electron beam transmitted through the plurality of holes or slits of the mask. The panel includes a plurality of stud pins for supporting the frame. The frame includes a plurality of elastic supports engaged with the plurality of stud pins. At least one of the plurality of elastic supports includes an engagement portion having an engaging hole which is engaged with one of the plurality of the stud pins and an elastic portion in contact with the one stud pin. Mask frame vibration causes the elastic portion to rub against a respective stud pin so as to generate a frictional force for attenuating the vibration of the mask frame.

Abstract: Each of the flat surfaces of the pin-seal portions is formed such that the width thereof in the second direction gradually increases as far as the portion upper than the stud pin in the direction from the side of the face portion to the side of the seal end surface, and forms the symmetrical shape about the center portion in the second direction. Namely, the flat surface is formed so as to have the substantially half ellipse shape which has the major axis in the second direction, and protrudes toward the face portion.

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: 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 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: Colour cathode-ray tube comprising a colour 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 mask for a color cathode ray tube (CRT) and a manufacturing method thereof are provided. This mask includes a plurality of strips isolated from each other at predetermined intervals in parallel, and a plurality of bridges for forming slots through which electron beams pass by connecting adjacent strips to each other. In this mask, each of the bridges between adjacent strips has a first curved portion formed on the side from which electron beams come out, and a second curved portion formed on the side upon which electron beams are incident. The first curved portion has a first width in the direction perpendicular to the length direction of the strips, and extends in the length direction of the strips. The second curved portion has a second width that is smaller than the first width in the length direction of the adjacent strips.

Abstract: A color CRT has a panel portion with a phosphor screen and a shadow mask structure. The shadow mask structure has a support frame, a shadow mask, and suspension springs attached to corners of the support frame. Studs are embedded in corners of the panel portion for supporting the shadow mask structure. Each suspension spring includes a base member and a spring member. The spring member includes a sloped portion extending axially and bent outwardly, an engagement portion formed with a hole engaged with one of the studs, and a step-like portion provided between the sloped portion and the engagement portion. The step-like portion protrudes the engagement portion toward the stud such that a center of the hole engaged with the stud is displaced toward the skirt portion of the panel portion from an intersection of an axis of the stud with an imaginary plane projected from the sloped portion.

Abstract: A color cathode ray tube includes a shadow mask structure composed of a frame, a shadow mask attached to the frame and suspension springs attached to the frame, and studs embedded in a skirt portion of its panel portion. Each suspension spring is composed of a base member including a portion attached to the frame, a sloped portion extending from the portion toward the skirt portion, and a first joint portion extending axially from the sloped portion; and a spring member including a second joint portion fixed to the first joint portion, a resilient portion extending at an angle &thgr; from the second joint portion, and a stud-engaging portion extending from the resilient portion and formed with a hole engaged with one of the studs, where 0°≦&thgr;≦10°. A length L of the resilient portion satisfies 20 mm≦L≦an axial length of the frame.

Abstract: A cathode-ray tube having a luminescent screen on a faceplate panel and a tension mask assembly, wherein the assembly comprises a pair of support blades for supporting a tension mask. The tension mask has a pair of mask borders each being fixed to a respective support blade and a plurality of strands extending between the mask borders. The mask further comprises cross wires extending generally perpendicular to the strands on a screen facing side and at least one shield assembly extending between and attached to the mask borders. The shield assembly has a sheath extending along one side of the mask in contact with at least one strand and a shield attached to the cross wires of the mask in overlapping relation to the sheath.

Abstract: A color display tube (1) is disclosed having an improved suspension system of the color selection electrode (12). The positional stability of the color selection electrode (12) is of eminent importance for the color purity of the color display tube (1). If the color selection electrode (12) slightly shifts, the electron beams (7,8,9) may impinge on electroluminescent material of the wrong color, leading to discolorations. It is recognized that this positional stability is improved by applying free end portions (22) of a smaller diameter on the supporting elements (17) because this will lower the friction between the free end portions (22) and the suspension means (20). This smaller diameter has the disadvantage that the insertion of the color selection electrode (12) into the display window (3) of the color display tube (1) becomes more difficult. This invention solves this problem by applying free end portions (22), which are provided with a centering tip (44).

Abstract: The invention provides a CRT having a funnel sealed at one end to a faceplate panel with a luminescent screen on an interior surface thereof, a mask assembly supported within the CRT and in proximity to the screen, the faceplate panel having a plurality of peripheral sidewalls each having an inside surface. The CRT also includes a plurality of studs, with at least one stud affixed in each of the corners of inside surface of the sidewalls. A plurality of springs engage the corner studs, to support the mask assembly within the CRT; at least one additional stud is affixed along the inside surface of one sidewall and a shim is attached around the additional stud. On the mask assembly at least one bracket is positioned to have a slot into which the shim is loosely engaged, thereby mitigating motion in a plane parallel to the interior sidewall.

Abstract: The invention provides a CRT having a funnel sealed at one end to a faceplate panel with a luminescent screen on an interior surface thereof, a mask assembly supported within the CRT and in proximity to the screen, the faceplate panel having a plurality of peripheral sidewalls each having an inside surface. The CRT also includes a plurality of studs, with at least one stud affixed in each of the corners of inside surface of the sidewalls. A plurality of springs engage the corner studs, to support the mask assembly within the CRT; at least one additional stud is affixed along the inside surface of one sidewall and a shim is attached around the additional stud. On the mask assembly at least one bracket is positioned to have a slot into which the shim is loosely engaged, thereby mitigating motion in a plane parallel to the interior sidewall.

Abstract: A color display tube (1) is disclosed, which comprises an improved suspension system of the color selection electrode (12). The color display tube has suspension means that are constructed so as to be self-locking. The suspension means (20) are provided with an additional flat portion (31). This plate has an aperture (32) that is shaped such that it has at least three surfaces of engagement (42, 43) for the free end portion (22) of the supporting elements (17) connected to the inside of the upright edge (18) of the display window (3). When the color display tube is exposed to shock loading, the construction of the flat portion (31) is capable of absorbing this shock without the color selection electrode (12) becoming detached from the supporting elements (17). The action is based on the friction between the surfaces of engagement (42) and the free end portion (22).

Abstract: A color display tube (1) is disclosed with an improved suspension of the color selection electrode (12). In order to have a color display tube with good properties of, for instance, color purity, it is of eminent importance that the color selection electrode (12) has and excellent positional stability. Especially wide screen tubes seem to be more sensitive to external shocks by which the color selection electrode (12) may shift and cause discolorations. The positional stability of the color selection electrode (12) can be improved by decreasing the friction between the color selection electrode (12) and the supporting elements (17) in the display window (3) of the color display tube (1). This is achieved by applying a supporting element (17) with a free end portion (22) having a small diameter and by applying a low force between the suspension means (20) and the supporting elements (17).

Abstract: A stud for mounting a shadowmask in a cathode ray tube comprises a tubular body symmetrically arrayed about a longitudinal axis and having a given diameter and a spherical projection fixedly mounted upon one end of the tubular body. The sphere has a diameter greater than the given diameter. In alternate embodiments the tubular body can have plural diameters.

Abstract: Each of the flat surfaces of the pin-seal portions is formed such that the width thereof in the second direction gradually increases as far as the portion upper than the stud pin in the direction from the side of the face portion to the side of the seal end surface, and forms the symmetrical shape about the center portion in the second direction. Namely, the flat surface is formed so as to have the substantially half ellipse shape which has the major axis in the second direction, and protrudes toward the face portion.

Abstract: A color CRT is provided, which makes it possible to use a larger-sized shadow mask without increasing the size of a face panel. This CRT is comprised of a vacuum envelope having a face panel, a funnel connected to the panel, and a neck connected to the funnel. The envelope has a central longitudinal axis approximatley pernendicular to the panel. The panel has studpins fixed to the inside of its side walls. A shadow mask assembly is provided in the envelope, which includes a shadow mask and a frame for supporting the mask. The frame has an approximately rectangular front section, an approximately rectangular middle section, and an approximately rectangular rear section. The front section and the rear section extend in approximately parallel to the central longitudinal axis of the envelope. The front section is shifted outwardly with respect to the rear section to approach the side walls of the panel. The periphery of the mask is fixed to the front section.

Abstract: A Braun tube including a shadow mask, a panel for supporting the shadow mask, stud pins fitted between the shadow mask and the panel, and a frame of substantially rectangular form having a long side with a height in a range of (0.8-0.9)×(a height from a center of the stud pin to a central point of an inside surface of the panel), and a short side and a corner side each with a height in a range of (0.7-0.85)×(the height of the long side), thereby making the Braun tube stable from influences from doming, howling, and geomagnetism by optimizing respective heights of the frame to satisfy various requirements for the Braun tube at the same time when an overall size of the frame is increased, and permitting convenience of design.

Abstract: Locking structure for picture tube and front frame body. Multiple fixing posts are formed on inner side of the front frame body and multiple fixing plates project from outer periphery of the picture tube corresponding to the fixing posts which retain the fixing plates. The front frame body is formed with a central window. When the bottom faces of the respective fixing plates of the picture tube are correspondingly planely rested on the fixing posts of the front frame body, the end edge of the flange of the window of the front frame body is snugly sealedly attached to the periphery of the picture tube. When screws are respectively screwed to forcedly lock the fixing plates of the picture tube on the corresponding fixing posts of the front frame body, the fixing plates are slightly downward inlaid into the top ends of the fixing posts so as to prevent the picture tube from being displaced or slided.

Abstract: A color picture tube includes an evacuated envelope having a rectangular faceplate panel with two approximately parallel long sides, two approximately parallel short sides and four corners. The panel comprises a faceplate and a peripheral sidewall, and includes a shadow mask-frame assembly mounted therein by springs located at the four corners of the panel. The springs have apertures engaging studs that are located on the peripheral sidewall at the four corners. The panel includes additional studs on the peripheral sidewall located near the centers of at least one pair of approximately parallel sides of the panel. Brackets are located on opposite sides of the shadow mask-frame assembly at the locations of the additional studs. The brackets include slots therein. The slots are open on sides thereof facing the faceplate. The additional studs are positioned within the slots.

Abstract: A color cathode ray tube comprises a vacuum envelope in which there is mounted a shadow mask having a curved surface having a plurality of electron beam passing holes and a skirt extending downward from the margin of the curved surface. The shadow mask is supported by a mask frame having a substantially rectangular side wall. A shadow mask assembly constituted by fitting and securing the skirt into the side wall is set in the panel of the envelope, and the skirt is fitted and secured into the side wall by curving the middles of two or four facing sides of the skirt inward. Thereby, it is possible to provide a color cathode ray tube having the shadow mask assembly capable of obtaining a superior magnetic shielding characteristic by enlarging the effective region of the curved surface of the shadow mask.

Abstract: A cathode ray tube face panel having an upstanding wall therearound with a plurality of article supporting studs retained therein, said studs being formed from an alloy having a chromium content of from about 10 to 16% by weight and the balance iron.

Abstract: A corner spring for color CRT includes a first arm where a coupling hole is formed to mate with a stud pin inside the panel, a second arm coupled with an outer face of the frame for supporting the shadow mask, and a welding portion where the first and second arms are welded to each other. The length(L) of movable piece that is from the welding portion to bent portion of the first arm, is represented as 1.08S≦L≦1.75S to the distance (S) from a center of spring hole in a stud pin coupling portion of the first arm to a frame contacting portion of the second arm. The distance (H) between a central axis of the welding portion and the frame welding portion of the second arm is expressed as H≦0.668S.

Abstract: A holder for maintaining an apertured shadow mask in fixed relation to the display screen of a color cathode ray tube (CRT) includes the combination of a mounting stud attached to an inner portion of the CRT's glass envelope and an apertured resilient metal holder attached to the shadow mask's peripheral frame and adapted to receive the mounting stud in a tight-fitting manner. A plurality of such mounting stud/metal holder combinations securely attach the top, bottom and lateral edges of the shadow mask frame to adjacent inner portions of the CRT's glass envelope adjacent its display screen. Heating of the shadow mask caused by the CRT's electron beams incident thereon gives rise to heating and thermal expansion of the shadow mask metal holders.

Abstract: An arrangement for mounting a shadow mask, or color selection electrode, in the glass envelope of a color cathode ray tube (CRT) includes four resilient metal holders, each spot welded to a respective upper, lower or lateral portion of the shadow mask's skirt. Each holder is formed from a unitary metal strip which is shaped so as to include an inner mounting portion spot welded to the mask's skirt and an outer apertured portion adapted to receive a stud attached to and extending inwardly from the CRT's glass envelope. The shadow mask undergoes thermal deformation, or doming, when heated by electron beams incident thereon and transfers heat to each of the metallic holders. Each of the metallic holders, in turn, undergoes thermal deformation, but because of the shape and orientation of the holders relative to the shadow mask, the four holders deflect the shadow mask in a direction generally perpendicular to and outward from the CRT's glass display screen, i.e., along the CRT's Z-axis.

Abstract: A color cathode ray tube includes a generally rectangular shadow mask having a curved apertured portion having a multiplicity of electron-transmissive apertures, a curved imperforate portion surrounding and integral with the apertured portion and a skirt portion bent back from a periphery of the curved imperforate portion, and a generally rectangular support frame for suspending the shadow mask by spot welding the skirt portion thereto, within a panel portion of the color cathode ray tube. The skirt portion is provided with a plurality of slits extending in a direction of a height of the skirt portion and a plurality of embossments extending in the direction of the height of the skirt portion, and the slits and the embossments are juxtaposed around a circumference of the skirt portion.

Abstract: A panel assembly for a cathode ray tube includes a panel having an inner phosphor screen and a side-wall, and a shadow mask having a plurality of beam-guide apertures. The shadow mask is placed behind the phosphor screen at a predetermined distance. A shadow mask frame is attached under the shadow mask to suspend it in the panel. The panel assembly further includes a plurality of stud pins embedded into the side-wall of the panel, a spring positioned between the shadow mask frame and the stud pins to interconnect them, and a vibration damping member for damping vibration of the shadow mask by converting mechanical stress applied to the shadow mask into electrical energy. The vibration damping member is formed with piezoelectric material layers provided on at least one of an outer periphery of the stud pin and between the spring and mask frame.

Abstract: The present invention discloses a shadow mask frame assembly for a cathode ray tube comprising a burring formed by bending the open end portion of the mask frame for improving the mechanical intensity of a mask frame, a groove portion formed on predetermined positions of the burring for easily mounting the mask frame inside the face panel without interference between the stud pin and the burring, and a planar perpendicular portion, which is formed on a lower portion of the burring, parallel to an axial direction of the cathode ray tube, to which a skirt portion of the shadow mask is welded.

Abstract: A color cathode ray tube is provided which comprises a face panel having an inner surface on which phosphors are formed, a funnel connected to the rear portion of the face panel, an electron gun housed in the neck portion of the funnel, a frame attached to pins on the inside of the face panel through springs provided on two short sides of the frame and one long side thereof, and a shadow mask attached to the frame at a predetermined distance from the phosphor surface. The operation length of the spring on the short side is longer than that of the spring on the long side, so that the amount of upward displacement of landing points during the entire doming phenomenon is decreased. Thus, the deterioration in the uniformity of the luminance of white quality is reduced in the color cathode ray tube.

Abstract: A color selecting electrode assembly for color cathode ray tubes includes: an aperture grill having thin slits; a frame over which the aperture grill is stretched; and supporting members in which a fixing portion at one end is attached to the frame and an engaging portion at the other end is engaged with a panel pin provided on a panel side wall so as to support the frame. An elastic portion of the supporting members is arranged in such a manner that boundary portions of the elastic portion with the fixing portion and the engaging portion become parallel to a longitudinal-direction of the slits. An engaging hole bored in the engaging portion is provided at such a position that the engaging hole intersects with an imaginary extension plane in which a joining portion of the frame and the aperture grill is extended in a direction parallel to a tube axis of a color cathode ray tube.

Abstract: In a liquid cooling type cathode-ray tube including a cathode-ray tube assembly (1), a coupler (3) provided in the front surface side of the cathode-ray tube assembly (1) to seal a coolant (9), and fixing members (6) for fixing the coupler (3) to the cathode-ray tube assembly (1), engagement pins (14A), (14B) are fitted into and fixed into a pair of as cast holes (11A), (11B) defined on the coupler (3) or the fixing members (6), and an earth wire (16) which directly closely contacts with an outer conductive film (2) to apply an earth potential to the outer conductive film (2) is extended between a pair of engagement pins (14A) and (14B) through a spring (17). Thus, the earth potential can be applied to the outer conductive film (2) of the liquid cooling type cathode-ray tube with a high reliability and a satisfactory working property.

Abstract: According to the prior art, springs (11/18) of a combination mask/frame (10) of picture tubes are joined to the frame by resistance welding. This welding technique is also customary when one of the springs (18) has a centering washer (20) at its free end. When combination mask/frames (10) designed in this manner are snapped repeatedly into and out of the shielding case (15), and when the shielding case (15) is stabilized or fritted to the neck of the picture tube, it can happen that the expansion characteristics of the combination mask/frame (10) are not homogeneous at the fourth spring (18) as compared to the other springs (11) under the picture tube's operating conditions.

Abstract: A color cathode-ray tube comprises a mask unit arranged between a face panel and an electron gun. The mask unit comprises a shadow mask and a mask frame supporting the shadow mask with being applied with tension. The shadow mask is formed of a substantially rectangular thin plate, arranged to face a phosphor screen formed on an inner surface of the face panel, and has a number of electron beam apertures through which electron beams emitted from the electron gun pass. The mask frame comprises a substantially rectangular frame body which has a pair of first sidewalls facing each other and a pair of second sidewalls facing each other, and a pair of mask fixing sections secured to a pair of opposite side edge portions of the shadow mask and extending along the side edge portions.

Abstract: A shadow mask color picture tube comprising a frame having two first parts each extending in a same direction and two second parts each extending in a direction perpendicular to the first parts and holding the shadow mask. A stud pin is provided at each of four corners of the skirt, and a first supporting member is provided on each of four corners of the frame. The first supporting members are connected to the stud pins so as to support the frame elastically on the skirt. Non-extensible, flexible thin metal members are provided so as to pull both the first parts of the frame in the same direction with respectively equal forces to the skirt of the panel. The forces act in the direction substantially parallel to that in which the first parts of the frame extend.

Abstract: A cathode ray tube relates to the improvement of its contact spring for grounding thermoelectrons remaining on a phosphor layer to an external anode, and the coupling structure of the contact spring. One end of the contact spring whose other end has a circular contact portion in contact with a graphite conductive layer of a funnel extends a predetermined length to form a contact portion in contact with an aluminum deposited layer of a panel. A contact spring coupling unit is formed at the center of the body of the contact spring and one side of the frame of a shadow mask frame assembly. The graphite layer formation process for electrically connecting the aluminum deposited layer and a stud pin can be eliminated, and the inferiority caused by choking of the electron beam passing holes of the shadow mask produced during welding the contact spring can be prevented which enhances productivity and quality of the end product.

Abstract: The present invention is directed to a color cathode ray tube comprising an evacuated envelope with a tube axis including a face panel having an inside wall with stud pins, a funnel connected to the panel and a neck extending from the funnel; a shadow mask assembly including a shadow mask facing the face panel, and a mask frame for supporting the shadow mask; a plurality of support members for suspending the shadow mask assembly to the stud pins, each of the support members comprising a first arm portion coupled to the study pin, a second arm portion connected to the mask frame and a folded portion connecting the first and second arm portions with each other; and a control member for controlling a deformation of each the support members, the control member connecting the folded portion to the mask frame, whereby the rotation of the shadow mask assembly caused by a deformation of the support member by an irregular inside wall of the face panel or by a thermal expansion of the shadow mask assembly can be preven

Abstract: A shadow mask assembly is formed such that a corner spring is attached to the side wall of a frame supporting a shadow mask. The corner spring has a supporting plate wherein a hole, into which a stud pin penetrates is formed at tile center; a pair of wings which extend in the direction of both sides of the supporting plate; and a welding plate which is formed by bending the supporting plate in a U-shape perpendicular to both wings. Minute space being formed between both wings and the side walls of the frame corresponding to the wings and facing and parallel to each other, and slots are inclined at an angle agreeing with a deflecting angle .beta. of an electron beam. Projections are combined with the slots, so that displacement by a thermal expansion of the frame is guided according to the deflecting angle.

Abstract: Disclosed is a device for mounting a shadow mask in a color television tube comprising an engaging hole for receiving a panel pin projected on the skirt of a panel to support the shadow mask, a resilient sloped guide surface for guiding the panel pin, being bent by contacting the panel pin so as to return to the original state with its resilient force thereof when the panel pin is inserted into the engaging hole, a guide groove formed behind the sloped guide surface for smoothly guiding the panel pin toward the engaging hole, and a stopper provided behind the engaging hole for preventing the panel pin from being excessively moved behind the engaging hole so as to properly align it with the engaging hole.

Abstract: A shadow mask frame assembly includes hook springs made of a plate-like bimetal member whose outer side is a high-expansion side and inner side is a low-expansion side, is fixed on a frame in the direction of an electron beam proceeding axis, and is nearly L-shaped to have a fixing portion welded to the base of the frame and a fitting portion having a fitting hole into which a stud pin on the inner side of a panel is fitted. The shadow mask frame assembly is not distorted or rotated with respect to the panel during the thermal expansion of a shadow mask due to electron beam collision, and is sufficiently compensated only in the direction of the electron beam's proceeding axis.

Abstract: The present elastic supporting member for use in a shadow mask frame has a fixing plate attached to the shadow mask frame; a supporting plate suspended from a conventional stud pin; a spring member interposed between the fixing plate and supporting plate; a pin by which a bracket of the fixing plate and the bracket of the supporting plate are hinged on each other; and stoppers to define the disposing distance between the fixing and supporting plates.

Abstract: This invention relates to an elastic support device for a shadow mask of a color picture tube which is able to minimize stress of elastic members resulting from thermal expansion of the shadow mask during operation of the color picture tube. Thus, the compensation for mislanding of an electron beam emitted to a screen is improved. The device includes a first elastic member having a first end thereof fixed to the frame and coupled at a second end thereof to a panel pin, wherein the panel pin is secured to the panel, thereby exerting elastic force upon the frame and a second elastic member having a first end thereof slidably coupled with the frame and a second end thereof to the first elastic member, thereby exerting auxiliary elastic force upon the frame.

Abstract: In a panel for a color cathode ray tube, a faceplate is so formed as to have a substantially rectangular front view and a skirt has four corner sections. Panel pin mount bases are provided on the four corner sections of the skirt, respectively and four panel pins are fixed to the mount base, respectively.

Abstract: A color display tube is set forth comprising a color selection electrode which is suspended from supporting elements in the corners of the display window of the color display tube. The suspension elements used to suspend the color selection electrode from the supporting elements comprise a resilient element which encloses an angle .alpha. with the normal to the center of the display window. The angle .alpha. (in degrees) is defined by:.alpha.= 90-x/2- .delta.where x is the maximum deflection angle of the electrons in the color display tube, and6.5<.delta.<1.5.In the case of a 110.degree. tube, 28.5.degree.<.alpha.<33.5.degree. . By virtue thereof, the effect of overall doming is substantially equal to the effect of ambient doming, as a result of which the average picture quality is improved.

Abstract: An annulus attached adjacent the edge planes of a CRT front panel provides screen area savings, and in the preferred embodiment, panel protection, strengthening, and anti-implosion properties. The annulus is preferably composed of a plurality of sections and incorporates a shadow mask support. The annulus is attached to the front panel before receiving the shadow mask becomes a part of the CRT envelope. In a preferred embodiment, the annulus is composed of ceramic and is x-ray shielded by an application of lead-based frit.

Abstract: An improved color picture tube includes an evacuated envelope having a rectangular faceplate panel. The panel includes a viewing screen on an inner surface thereof and a shadow mask assembly mounted therein by support means located at the four corners of the panel. The shadow mask assembly includes an apertured shadow mask and a peripheral frame to which the mask is attached. The frame is formed by four sections that are welded together at their ends. Two of the sections are longer than the other two sections and are constructed of a material having a different coefficient of thermal expansion than that of the other two sections. The frame reduces electron beam misregister with elements of the screen.