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1. 发明专利

JPH06131987A COLOR PICTURE TUBE 失效
公开(公告)号：JPH06131987A
公开(公告)日：1994-05-13
申请号：JP28038292
申请日：1992-10-20
申请人： TOSHIBA CORP
发明人： FUKUDA KUMIO , KANBARA EIJI , SHIMOKAWABE JIRO
IPC分类号： H01J29/18 , H01J31/20
摘要： PURPOSE:To provide an image having a wide visual field angle and ambience. CONSTITUTION:A rectangular phosphor screen 12 made of a three-color phosphor layer is formed on the inner face of a panel 10 having an image display face 19 made of a curved surface, an electron beam emitted from an electron gun is deflected by the magnetic field generated by a deflection yoke, the electron beam is selected by a color selecting electrode 13 arranged to face the phosphor screen 12 and horizontally and vertically scanned on the phosphor screen 12, and the rectangular image plane is obtained on the phosphor screen 12. At least the long side 22 of the phosphor screen 12 is formed into a pin cushion shape.

2. 发明专利

JPH05299028A 失效
公开(公告)号：JPH05299028A
公开(公告)日：1993-11-12
申请号：JP10502392
申请日：1992-04-24
申请人： TOSHIBA CORP
发明人： KANBARA EIJI , SHIMOKAWABE JIRO
IPC分类号： H01J29/56
摘要： PURPOSE:To prevent convergent error of three electron beams by focusing the three single-rowed electron beams composed of a center beam passing on the same plane and a pair of side beams by means of a large aperture magnetic electron lens. CONSTITUTION:In an electron gun 7, one of a pair of side beams 6B and 6R are deflected/emitted in the negative direction and the other is deflected/emitted in the positive direction without focusing three electron beams 6B, 6G and 6R by a beam emitting edge side rotational direction deflecting means DR. This is to carry out a rotational correction on a large aperture common magnetic field focusing type electron lens image formed by means of a focusing magnetic field generator FMG. The three electron beams are converged on a phosphor screen 3 through this lens. To a convergent operation of this lens, an in-line direction deflecting means DI formed by winding a coil round horizontal/vertical shafts of an annular magnetic substance core forms a four- pole magnetic field, and exerts a force so as to keep away the beams 6B and 6R from the beam 6G, and corrects excessive convergence, and converges the beams 6B, 6G and 6R properly on the screen 3.

3. 发明专利

JPH03205746A COLOR PICTURE TUBE DEVICE 失效
公开(公告)号：JPH03205746A
公开(公告)日：1991-09-09
申请号：JP28419690
申请日：1990-10-24
申请人： TOSHIBA CORP
发明人： SHIMOMA TAKETOSHI , KANBARA EIJI , SHIMOKAWABE JIRO
IPC分类号： H01J29/48 , H01J29/50
摘要： PURPOSE:To obtain a color picture tube which has a short depth like one for a general house even in use for an HDTV and small consumption power and can display a high-quality image by specifying the ratio between the diagonal maximum deflection angle by a deflection yoke, the interval of adjacent electron beams, and the inner diameter of a neck. CONSTITUTION:The diagonal maximum deflection angle by a deflection yoke 57 is set wide to 100-110 deg. like a present color picture tube for a general house to shorten the depth. The diameter of a neck 55 is set large to 36.5mm or above, the interval between three electron beams BR, BG, and BB of an electron gun 56 sealed in it is set small to 3.5-6.0mm, and these three electron beams BR, BG, and BB are concurrently focused by a large-diameter electron lens LEL, thus the spot diameter on a screen 52 is made small, and the high resolution required for an EDTV and an HDTV is obtained. The self-concentration magnetic field can be obtained due to in-line arrangement, and the interval between the three electron beams BR, BG, and BB is small regardless of the large neck diameter and the large deflection angle. A color picture tube which has a short depth like one for a general house in use for the HDTV and low consumption power and can display a high-quality image is obtained.

4. 发明专利

JPH03205745A COLOR PICTURE TUBE DEVICE 失效
公开(公告)号：JPH03205745A
公开(公告)日：1991-09-09
申请号：JP28419590
申请日：1990-10-24
申请人： TOSHIBA CORP
发明人： SHIMOMA TAKETOSHI , KANBARA EIJI , SUGAWARA SHIGERU , SHIMOKAWABE JIRO
IPC分类号： H01J29/48 , H01J29/50 , H01J29/51
摘要： PURPOSE:To easily improve the distortion of the beam spot due to deflection aberration and obtain a good image over the whole screen area by concentrating three parallel electron beams generated from a cathode by a common large- diameter lens near a screen. CONSTITUTION:Three parallel beams BR, BG, and BB are formed at an electron beam forming section GE, and they are focused and concentrated on a preset screen 2 by the first lens L1, the second lens L2, and the third lens L3 at a main lens section ML. The first lens L1, the second lens L2, and the third lens L3 are installed to adjust the focusing state of three beams, the fourth lens L4 contains a large-diameter lens acting in common for the three beams BR, BG, and BB, the interval between three beams is small, high lens performance is exerted, convergence quality is good over the whole face of the screen 2, the beam spot diameter is reduced, and high resolution is realized. The beam spot deflection aberration is easily corrected, and a good image is obtained over the whole face of the screen 2.

5. 发明专利

JPH03141540A COLOR PICTURE TUBE 失效
公开(公告)号：JPH03141540A
公开(公告)日：1991-06-17
申请号：JP27856789
申请日：1989-10-27
申请人： TOSHIBA CORP
发明人： SHIMOMA TAKETOSHI , KANBARA EIJI , SHIMOKAWABE JIRO
IPC分类号： H01J31/20 , H01J29/50 , H01J29/76
摘要： PURPOSE:To improve a convergence characteristic, deflection-and defocus characteristics without deterioration of deflection sensitivity by increasing the ratio of the space between three electron beams to the neck diameter and the length of horizontal deflection coil. CONSTITUTION:A deflecting yoke 57 is provided with a saddle type horizontal deflection coil 71 and a saddle type vertical deflection coil 72, and both coils are fixed to a mold. In this constitution, dispersion of misconvergence can be decreased by increasing DN/Sg. In the case of a wide angle deflecting cathode ray tube whose screen diameter is of a 25 inches-40 inches class, a length of horizontal deflection coil lHall is actually limited to approximately 180mm in maximum in the light of a total length of the picture tube, and if it is more lengthened, it becomes a picture tube unsuitable for the general household, because its depth is deep. In the case of such a large type wide angle deflecting cathode tube, it is preferable that the length lHall of the horizontal deflecting coil is therefore more than 90mm, but less than 180mm, and that DN/Sg, a ratio of a neck outer diameter D corresponding to the above value to the space of beams at both sides of the center Sg, is more than 8.4, but less than 14.0.

6. 发明专利

JPH02144831A COLOR PICTURE TUBE DEVICE 失效
公开(公告)号：JPH02144831A
公开(公告)日：1990-06-04
申请号：JP29726588
申请日：1988-11-25
申请人： TOSHIBA CORP
发明人： SHIMOMA TAKETOSHI , KANBARA EIJI , SUGAWARA SHIGERU , SHIMOKAWABE JIRO
IPC分类号： H01J29/48 , H01J29/50 , H01J29/51
摘要： PURPOSE:To enhance picture performance by focusing each of three parallel electron beams, given out of a cathode by a common large-aperture electron lens, on a screen in an optimal focused condition and an optimal centralized condition. CONSTITUTION:Components are the first electron lens LL which operates in common on three electron beams BR, BG, BS entered in parallel to a main electron lens portion ML1 and a combined electronic lens which has three individual of the second electron lenses SL1 to SL3 given by an electrode with three beam passing holes in a lens area of the first electron lens LL, and for three individual of the second electron lenses SL1 to SL3 the electron lens at the center is set to be stronger in focusing operation than the electron lenses on both sides and also each of electron beams on both sides is set to be entered into the center beam side of corresponding each of the second electron lenses SL1 to SL3. Each of the electron beams on both sides experiences comatic aberration from the second electron lenses SL1 to SL2, however the comatic aberration is offset because the first electron lens LL then experiences reverse comatic aberration, resulting in good focus on a screen. It is thus possible to enhance picture performance.

7. 发明专利

JPH01248438A COLOR IMAGE TUBE DEVICE 失效
公开(公告)号：JPH01248438A
公开(公告)日：1989-10-04
申请号：JP7439688
申请日：1988-03-30
申请人： TOSHIBA CORP
发明人： MOROHASHI KATSUE , SHIMOMA TAKETOSHI , SHIMOKAWABE JIRO
IPC分类号： H01J29/76
摘要： PURPOSE:To make correction of a cross convergence pattern by distributing the magnetic flux symmetrical about X-Z plane and asymmetrical about Y-Z plane, and by varying the mode of asymmetricity in synchronization with the horizontal and vertical deflection signals. CONSTITUTION:When distribution of the magnetic flux is such a to spread from the positive side of X-coordinates to the negative side, the separately directed flux density to the red electron beam is higher than that to the blue electron beam 33, and the red electron beam 31 receives an upward oriented force. The blue electron beam also receives an upward oriented force 36, but because the deflecting mag. flux density applied to the red electron beam is higher than the deflecting mag. flux density acting on the blue electron beam, the red electron beam 31 is deflected more than the blue electron beam. That is, the mag. flux distribution of the vertical deflecting mag. field is made asymmetrical about the Y-Z plane, and the mode of asymmetricity is varied in synchronization with the vertical and horizontal deflection signals. This enables correction of the cross convergence pattern.

8. 发明专利

JPS6489248A COLOR IMAGE RECEIVING TUBE 失效
公开(公告)号：JPS6489248A
公开(公告)日：1989-04-03
申请号：JP24756787
申请日：1987-09-30
申请人： TOSHIBA CORP
发明人： SHIMOMA TAKETOSHI , MOROHASHI KATSUE , SHIMOKAWABE JIRO
IPC分类号： H04N9/16 , H01J29/76 , H04N9/28
摘要： PURPOSE:To have high resolution over the whole picture field by making the horizontally deflecting magnetic field in the form of a barrel having vertical component and the vertical deflecting magnetic field in pin cushion form, and equipping an image signal of electron gun corresponding to each color with a lag time controlled mutually. CONSTITUTION:A deflecting device 30 includes a horizontal deflecting coil 31, vertical main deflecting coil 32, vertical aux. deflecting coil 33, and ferrite core 34. The horizontally deflecting magnetic field is made in barrel form and generated by the horizontal deflecting coil 31, while the vertically deflecting magnetic field in weak pin cushion form and generated by the vertical main deflecting coil 32. A delay circuit 27 gives mutually controlled delay times to the distribution signal for three electron guns, to correct misconvergence at the horizontal ends and diagonal ends of the picture field, while the vertical aux. deflecting magnetic fields is generated to correct misconvergence at the vertical ends and diagonal ends of the picture field. Thereby distortion of the beam spot shape is eliminated approximately, and a high resolution can be obtained over the whole picture field.

9. 发明专利

JPH05166469A COLOR PICTURE TUBE DEVICE 失效
公开(公告)号：JPH05166469A
公开(公告)日：1993-07-02
申请号：JP32933791
申请日：1991-12-13
申请人： TOSHIBA CORP
发明人： SUGAWARA SHIGERU , SHIMOKAWABE JIRO , KANBARA EIJI
IPC分类号： H01J29/76 , H04N9/28
摘要： PURPOSE:To improve a picture quality by arranging an auxiliary deflecting device in the vicinity of a main deflecting device so that misconvegence generated by repulsive force between three electron beams can be corrected. CONSTITUTION:A main deflecting device 13 relating to three electron beams 9B, 9G, 9R, emitted from an electron gun 10, is mounted to the outside of a boundary part between a large contour part 12 of a funnel 2 and a neck 8, and a color purity convergence correcting magnet 14 is mounted to the outside of the neck 8. An auxiliary deflecting device 27 is mounted adjacent to the magnet 14 to the outside of the neck 8 to connect a pair of coils of this device to an auxiliary deflecting circuit 28 connected to a driving circuit 23. By a command signal fed from the circuit 23 based on a current quantity of the electron beam, a predetermined current is allowed to flow in the coil of the device 27 from a circuit 27, and when a 4-pole field is generated, the three electron beams 9B, 9G, 9R can be properly concentrated on a phosphor screen 3 by moving a pair of the side beams 9B, 9R in a direction of over concentration.

10. 发明专利

JPH0487236A CATHODE-RAY TUBE 失效
公开(公告)号：JPH0487236A
公开(公告)日：1992-03-19
申请号：JP20264090
申请日：1990-07-31
申请人： TOSHIBA CORP
发明人： KANBARA EIJI , SHIMOKAWABE JIRO
IPC分类号： H01J29/48 , H01J29/50 , H01J29/96
摘要： PURPOSE:To easily apply a determined voltage to each electrode of an electron gun by connecting one end part of a resistance body provided along the electron gun to an electrode to which a relatively high voltage is applied, excluding an anode electrode, through a stem pin to resistively divide the voltage, and applying the determined voltage to an electrode to which a relatively low voltage is applied. CONSTITUTION:A resistance body 27 is provided along an electron gun 20, and one end part of the resistance body 27 is connected to, for example, an electrode G3 to which a relatively high voltage is applied, excluding an anode electrode G6, through a stem pin 24 to resistively divide the relatively high voltage applied to the electrode G3, and the resulting voltage is applied to electrodes G4, G5 to which a relatively low voltage is applied. Thus, a determined voltage is applied to one stem pin 24, whereby the voltage is resistively divided by the resistance body 24, and the determined voltage can be applied to other electrodes G4, G5. Thus, a required voltage can be easily applied to each electrode of the electron gun.

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