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公开(公告)号：JPH0467539A
公开(公告)日：1992-03-03
申请号：JP17960290
申请日：1990-07-09
Applicant: TOSHIBA CORP
Inventor： SONE TOSHIHISA , NAKAMURA MICHIO , HIROTA KOJI
Abstract: PURPOSE:To absorb the positional error of stud pins in manufacture by providing guide means limiting the relative movement elastic supporters to one direction on multiple elastic supporters except one. CONSTITUTION:When a shadow mask 7 is to be assembled into a panel 3, coupling members 216 corresponding to the second and third elastic supporters 21b, 21c and a coupling member 206 corresponding to the fourth elastic supporter 21d are merely brought into contact with respective elastic supporters 21b, 21c, 21d. The movement of the supporters 21b, 21c, 21d against the members 216, 206 coupled with the stud pins 30b, 30c, 30d is limited only to the direction parallel with the plane formed by the pins 30a, 30b, 30c by guide means. The supporters 21b, 21c, 21d are moved to positions where spring pressures of the supporters 21a, 21b, 21c, 21d are balanced in the direction parallel with the plane formed by the pins 30a, 30b, 30c and stopped. Coupling sections 213, 203 and coupling members 216, 206 of the supporters 21b, 21c, 21d are welded and fixed. The twisting of the supporters 21 can be prevented.
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公开(公告)号：JPS63239752A
公开(公告)日：1988-10-05
申请号：JP9864487
申请日：1987-04-23
Applicant: TOSHIBA CORP
Inventor： SONE TOSHIHISA , URATA HIROSHI , NAKAMURA MICHIO , TAKAHASHI TORU , YAMAZAKI HIDETOSHI , TOKITA KIYOSHI
Abstract: PURPOSE:To make a purity drift not produced for hours even in case of using a shadow mask small in a coefficient of thermal expansion and an iron mask frame by using a specific support member. CONSTITUTION:A support member 30, having a top part, is formed into V-shaped or U-shaped form in a section in the direction of a tube shaft 17, and it consists of a first member 32 extending toward a stand pin 22 from the top part with a certain angle to the tube shaft 17 and a second member 33 extending toward a shadow mask 18 from the top part with a certain angle to the tube shaft 17. Accordingly, even if a mask frame 19 is spread in the peripheral direction by thermal expansion, it is in no case shifted toward a phosphor screen. Otherwise, the travel is possible to be set to the desired small value. In this manner, the mask frame 19 is supported at four corners, and in case of a color picture tube where a coefficient of thermal expansion in the shadow mask 18 is small as compared with the mask frame 19, a purity drift for long hours is improvable.
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公开(公告)号：JPS622432A
公开(公告)日：1987-01-08
申请号：JP27786685
申请日：1985-12-12
Applicant: TOSHIBA CORP
Inventor： TOKITA KIYOSHI , NAKAMURA MICHIO , URATA HIROSHI
Abstract: PURPOSE:To improve the image reproduction of a color cathode-ray tube by adjusting the angle between the movable piece of a thin elastic member and the tube axis and the angle between an electron beam and the tube axis according to a given formula. CONSTITUTION:The side wall of a shadow mask 15 having a thermal expansion coefficient of alpham for 200 deg.C is fixed to a mask frame 17 having a thermal expansion coefficient of alphaf for the above temperature range. A thin elastic member 22 is installed between a mask frame 17 and a stud pin 10 which is buried in the inner surface of the panel 1. The angle (alpha) between the movable piece 22a of the member 22 and the tube axis 20 and the angle (beta) between the tube axis 20 and an electron beam 24 passing through the outermost opening of the shadow mask 15 located near the member 22 are adjusted according to the formula. Due to the above structure, the image reproduction of the color cahtode-ray tube is improved.
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公开(公告)号：JPS59165338A
公开(公告)日：1984-09-18
申请号：JP3821883
申请日：1983-03-10
Applicant: Toshiba Corp
Inventor： TOKITA KIYOSHI , NAKAMURA MICHIO
IPC: H01J29/07
CPC classification number: H01J29/076
Abstract: PURPOSE: To suppress occurrence of the doming of a shadow mask at the early stage of its operation, by adapting the slit holes in the shadow mask to be distributed with specific pitches in the horizontal direction.
CONSTITUTION: If the pitches of the slit holes in the shadow mask in the horizontal direction are represented by PO at the center, PH at the end of the horizontal axis, PV at the end of the vertical axis, and PD at the end of the diagonal line, they were adapted to suffice POAbstract translation: 目的：通过使荫罩中的狭缝孔在水平方向上以特定的间距进行调整，来抑制荫罩在其操作的早期阶段的拱起发生。 构成：如果水平方向的荫罩中的狭缝孔的间距由中心处的PO表示，水平轴端的PH表示为垂直轴的末端，在末端的PD表示 对角线，它们适应于足够的PO
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公开(公告)号：JPS58184244A
公开(公告)日：1983-10-27
申请号：JP6625482
申请日：1982-04-22
Applicant: Toshiba Corp
Inventor： KIDA KINJI , NAKAMURA MICHIO
CPC classification number: H01J29/707
Abstract: PURPOSE:To eliminate any difference between deflection sensitivity to both side beams and the same to the central beam, with regard to the combination of a color picture tube and deflection yoke, wherein the deflection sensitivity to both side beams is different from the deflection sensitivity to the central beam. CONSTITUTION:12 and 14 denote both side beam emission holes of an electron gun while 13 denotes a central beam emission hole. Also 23 and 24 are deflection magnetic field control elements while 25-30 denote each part of the magnetic field control elements. In said constitution arrangement, the horizontal deflection magnetic field near the central beam emission hole 13 becomes fairly scarcse because much of the magnetic flux is converged by the parts 25 and 26 of the magnetic control elements 23 and 24. Accordingly, the magnetic field control elements 23 and 24 act to weaken the horizontal deflection sensitivity to the central beam 4 thus to enable even coma aberration to be easily corrected.
Abstract translation: 目的：为了消除与侧光束的偏转灵敏度和与中心光束的偏转灵敏度之间的差异，关于彩色显像管和偏转线圈的组合，其中对两个侧面光束的偏转灵敏度不同于偏转灵敏度 中央梁。 构成：12和14表示电子枪的两个侧射束发射孔，而13表示中心射束孔。 另外23和24是偏转磁场控制元件，而25-30表示磁场控制元件的每个部分。 在所述构成装置中，中央光束发射孔13附近的水平偏转磁场变得相当狭窄，因为大部分磁通量被磁控制元件23和24的部分25和26收敛。因此，磁场控制元件 23和24用于削弱对中心束4的水平偏转灵敏度，从而能够容易地校正彗形像差。
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Patent Agency Ranking
公开(公告)号：JPH09283057A
公开(公告)日：1997-10-31
申请号：JP9100596
申请日：1996-04-12
Applicant: TOSHIBA CORP
Inventor： NAKAMURA MICHIO , KADOKAWA SATOSHI
Abstract: PROBLEM TO BE SOLVED: To constitute an explosion-proof cathode ray tube obtaining an excellent explosion-proof reinforcing affect by applying it to a cathode ray tube flatting an effective part of a panel and laterally long cathode ray tube with 16:9 aspect ratio or fluorescent screen. SOLUTION: This cathode ray tube is provided with a vacuum envelope comprising a substantially rectangular panel providing a side wall part in the periphery of an effective part and a funnel connected or fused to a side wall part end of the panel, metal band 29 annularly connecting both end parts fastening a side wall part periphery of the panel with an elongation factor exceeding an elastic limit and a mounting lug 31 welded to this metal band. Here, in the metal band 29, both end connection parts are positioned in the vicinity of a diagonal axis of the panel, its both end parts are connected through the mounting lug 31 arranged in the vicinity of diagonal axis thereof.
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公开(公告)号：JPH07320659A
公开(公告)日：1995-12-08
申请号：JP10648794
申请日：1994-05-20
Applicant: TOSHIBA CORP
Inventor： NAKAMURA MICHIO , KADOKAWA SATOSHI , TSUCHIDA SHIGERU
IPC: H01J29/76
Abstract: PURPOSE:To improve the concentration of three beams aligned in a line, and to improve the focus characteristic of the peripheral part of a faceplate by combing a first arm for magnetically connecting, a connection part for leading a magnetic flux and a second arm for forming a magnetic field so as to apply the specified work. CONSTITUTION:In the case where a pair of magnetic field control elements 22 are arranged in the rear side of a vertical deflecting coil 13, the rear leaked magnetic field discharged from the rear part of the vertical deflecting coil 13 in the electron gun 7 direction is taken into a first arm 23, and the magnetic flux taken into the first arm 23 is led to a second arm 24 through a connection part 25, and discharged from a pair of magnetic pole formed parts 26 in both sides of the second arm 24 so as to form a pin-cushion magnetic field in the rear side of a deflecting device 21. The vertical deflected magnetic field of the deflecting device 21 is thereby formed so that the phosphor screen 3 side is formed with a barrel type magnetic field generated by the vertical deflecting coil 13 and that the electron gun 7 side is formed with the pin-cushion magnetic field formed by the magnetic field control element 22. Coma of the barrel type vertical deflecting magnetic field is reduced, and the three electron beams 6B, 6G, 6R can be concentrated over the whole of the faceplate without the concentration error.
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公开(公告)号：JPH07141996A
公开(公告)日：1995-06-02
申请号：JP29028493
申请日：1993-11-19
Applicant: TOSHIBA CORP
Inventor： NAKAMURA MICHIO , KADOKAWA SATOSHI , JO KATSUYOSHI
IPC: H01J29/02
Abstract: PURPOSE:To provide a color picture tube having the very small dislocation of beam landing due to an external magnetic field and excellent color purity. CONSTITUTION:A color picture tube is directly or indirectly fitted to the mask frame 5 of an actually rectangular shadow mask 6 to be positioned on the inner side of a funnel 2, and has an inner shield 30 composed of hollow and quadrangle trapezoidal ferromagnetic metal for shielding an electron beam passing region on the funnel inner side of electron beams 8B, 8G, and 8R emitted from an electron gun 9. A magnetic field control piece 31 composed of ferromagnetic metal protruded in a tube axis direction is provided on the inner side of the corner part vicinity of the inner shield 30 to magnetically join this magnetic field control piece with the inner shield or the mask frame.
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公开(公告)号：JPH0456043A
公开(公告)日：1992-02-24
申请号：JP16241890
申请日：1990-06-20
Applicant: TOSHIBA CORP , TOSHIBA ELECTRONIC ENG
Inventor： NAKAMURA MICHIO , SONE TOSHIHISA , KIDA KINJI , SHOJI HITOSHI
Abstract: PURPOSE:To suppress blooming phenomenon in the high current region by forming an approx. circular recess coaxially with an electron beam passinghole in No.1 grid at that surface of a cathode which faces the No.1 grid, and providing an electron emission layer only on the inner surface of this recess. CONSTITUTION:An approx.. circular recess 26 is formed coaxially with the electron beam passing hole 5 in No.1 grid at that surface of a cathode 25K which faces the No.1 grid G1, and an electron emission layer 27 is provided only on the inner surface of this recess. Thereby electrons in the low current region are emitted from an operational region 29L formed in a shallow part near the No.1 grod G1 in the recess 26. The electrons in the high current area, on the other hand, are emitted from the operational region in the low current region and that operational area 29H of the recess 26 which is formed in a part deeper than the low current region operational region. Thereby the assumed crossover dia. can be made small even in the high current region, and also the influence of the aberration due to main electron lens ML in the high current region can be reduced. As a result, blooming phenomenon in the high current region can be suppressed.
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公开(公告)号：JPH01159938A
公开(公告)日：1989-06-22
申请号：JP31534587
申请日：1987-12-15
Applicant: TOSHIBA CORP
Inventor： NAKAMURA MICHIO , YAMAZAKI HIDETOSHI , TAKAHASHI TORU
Abstract: PURPOSE:To correct purity drift for a long period of time properly by forming the body of a shadow mask from a material with low coefficient of thermal expansion, constituting the mask frame from a material with high coefficient of thermal expansion, and supporting this shadow mask by a frame holder equipped with No.1 and No.2 elastically deforming parts which are inclined in acute angle to the two edges of a detent part for detention to a stud pin. CONSTITUTION:The body 22 of a shadow mask 24 is formed from a material with low coefficient of thermal expansion such as invar material, while the mask frame 23 to support its peripheries constituted from a carbon steel material with relatively high coefficient of thermal expansion, and the shadow mask 24 is borne by a stud pin 29 at the inside of a panel 1. When an electron beam collides with this shadow mask 24, the mask body presents little thermal expansion due to its low coefficient of thermal expansion, and the mask frame 23 displaces in the radial direction as shown by the arrow 36, and No.1 and No.2 elastic deforming parts 32 of the frame holder 28 deform elastically. As these elastically deforming parts 32a, 32b are folded in approx. equal angle with respect to a detent part 31, there is little displacement of the mask frame 23 in the direction toward the fluorescent screen.
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