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公开(公告)号：CA1213303A
公开(公告)日：1986-10-28
申请号：CA469209
申请日：1984-12-03
Applicant: RCA CORP
Inventor： CHEN HSING-YAO , HUGHES RICHARD H
Abstract: An improved color picture tube has an inline electron gun for generating and directing three inline electron beams along initially coplanar paths toward a screen of the tube. The beams pass through a deflection zone adapted to have two orthogonal magnetic deflection fields established therein. A first of the fields causes deflection of the beams perpendicular to the inline direction of the beams, and a second of the fields causes deflection parallel thereto. The improvement comprises the electron gun including four magnetically permeable members located near the exit of the electron gun in a fringe portion of the deflection zone. A first and a second of the members are located between the center beam path and a first and a second outer beam path, respectively. A third and a fourth of said members are spaced from the first and second members, respectively, and located on the outside of the respective outer beam paths. The first and third members and the second and fourth members bypass a part of the fringe portion of each of the two orthogonal deflection fields around the respective outer beam paths, while allowing another part of each of the same fringe portions to pass through the respective outer beam paths. The first and second members bypass a part of the fringe portion of each of the orthogonal deflection fields around the center beam path, while allowing another part of each of the same fringe portions to pass through the center beam path.
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公开(公告)号：GB2135507B
公开(公告)日：1986-05-14
申请号：GB8402100
申请日：1984-01-26
Applicant: RCA CORP
Inventor： CHEN HSING-YAO
Abstract: An inline electron gun in a color picture tube is improved by the addition of two slots that are spaced sufficiently close to and inward from the two apertures in a portion of the screen grid electrode facing an accelerating and focusing electrode. The slots cause a distortion of the electrostatic field formed between the two electrodes at the two apertures. The field distortion compensates for an opposite distortion within the main lens of the electron gun.
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公开(公告)号：DD232387A5
公开(公告)日：1986-01-22
申请号：DD27060784
申请日：1984-12-11
Applicant: RCA CORP
Inventor： CHEN HSING-YAO , HUGHES RICHARD H
Abstract: The present invention provides an improvement in a color picture tube having an inline electron gun for generating and directing three inline electron beams, comprising a center beam and two outer beams, along initially coplanar paths toward a screen of the tube. The beams pass through a deflection zone adapted to have two orthogonal magnetic deflection fields established therein. A first of the fields causes deflection of the beams perpendicular to the inline direction of the beams, and a second of the fields causes deflection parallel to the inline direction of the beams. The improvement comprises the electron gun including four magnetically permeable members located near the exit of the electron gun in a fringe portion of said deflection zone. A first and a second of the members are located between the center beam path and a first and second outer beam path, respectively. A third and a fourth of said members are spaced from the first and second members, respectively, and are located on the outside of the respective outer beam paths. The first and third members and the second and fourth members have means for bypassing a part of the fringe portion of the first of the two orthogonal magnetic deflection fields, at the members, around the respective outer beam paths, while allowing another part of the same fringe portion, at the members, to pass through the respective outer beam paths. The first and second members have means for bypassing a part of the fringe portion of the first of the two orthogonal deflection fields, at the members, around the center beam path, while allowing another part of the same fringe portion, at the members, to pass through the center beam path.
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24.发明专利
公开(公告)号：CA1182162A
公开(公告)日：1985-02-05
申请号：CA406127
申请日：1982-06-28
Applicant: RCA CORP
Inventor： CHEN HSING-YAO
Abstract: An improved color picture tube has an inline electron gun for generating and directing three electron beams, a center beam and two side beams, along coplanar paths toward a screen of the tube. The gun includes a main focus lens for focusing the electron beams. The main focus lens is formed by two spaced electrodes each having three separate inline apertures therein. Each electrode also includes a peripheral rim. The peripheral rims of the two electrodes face each other. The apertured portion of each electrode is within a recess set back from the rim. The main focus lens electrode closest to the screen includes a slot on the side facing the screen. The slot extends in the direction of the three electron beam paths and includes means for providing a weaker stigmator effect on the two side beams than on the center beam.
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公开(公告)号：IT8424007D0
公开(公告)日：1984-12-12
申请号：IT2400784
申请日：1984-12-12
Applicant: RCA CORP
Inventor： CHEN HSING-YAO , HUGHES RICHARD HENRY
Abstract: The present invention provides an improvement in a color picture tube having an inline electron gun for generating and directing three inline electron beams, comprising a center beam and two outer beams, along initially coplanar paths toward a screen of the tube. The beams pass through a deflection zone adapted to have two orthogonal magnetic deflection fields established therein. A first of the fields causes deflection of the beams perpendicular to the inline direction of the beams, and a second of the fields causes deflection parallel to the inline direction of the beams. The improvement comprises the electron gun including four magnetically permeable members located near the exit of the electron gun in a fringe portion of said deflection zone. A first and a second of the members are located between the center beam path and a first and second outer beam path, respectively. A third and a fourth of said members are spaced from the first and second members, respectively, and are located on the outside of the respective outer beam paths. The first and third members and the second and fourth members have means for bypassing a part of the fringe portion of the first of the two orthogonal magnetic deflection fields, at the members, around the respective outer beam paths, while allowing another part of the same fringe portion, at the members, to pass through the respective outer beam paths. The first and second members have means for bypassing a part of the fringe portion of the first of the two orthogonal deflection fields, at the members, around the center beam path, while allowing another part of the same fringe portion, at the members, to pass through the center beam path.
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Patent Agency Ranking
公开(公告)号：FR2540288A1
公开(公告)日：1984-08-03
申请号：FR8401284
申请日：1984-01-27
Applicant: RCA CORP
Inventor： CHEN HSING-YAO
Abstract: An inline electron gun in a color picture tube is improved by the addition of two slots that are spaced sufficiently close to and inward from the two apertures in a portion of the screen grid electrode facing an accelerating and focusing electrode. The slots cause a distortion of the electrostatic field formed between the two electrodes at the two apertures. The field distortion compensates for an opposite distortion within the main lens of the electron gun.
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公开(公告)号：FR2509526A1
公开(公告)日：1983-01-14
申请号：FR8211735
申请日：1982-07-05
Applicant: RCA CORP
Inventor： CHEN HSING-YAO , HUGHES RICHARD HENRY
Abstract: A color CRT has an inline electron gun for generating and directing three electron beams toward a screen, the gun including a main focus lens formed by two spaced electrodes (40, 42) each having three separate inline apertures (58,60,62;64,66,68) and a peripheral rim (70,72), the apertured portion of each electrode being within a recess (54,56) set back from the rim, 15 wherein the main focus lens electrode (42) closest to the screen includes a slot (95) e.g. formed by two strips (96,98), on the side facing the screen, the slot extending in the direction of the three electron beam paths and includes means for providing a weaker stigmator effect on the two side beams than on the center beam. As shown in Figure 5 the ends of the strips (96, 98) may be tapered, or curved or the strips shortened, to provide the weaker stigmator effect. Alternatively, Figures 9 and 10 (not shown), the slot is dogboned in shape and located in a bracket (102) attached to an apertured plate (52), in turn attached to the screen side of the main focus lens electrode closest to the screen.
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公开(公告)号：FR2509525A1
公开(公告)日：1983-01-14
申请号：FR8211733
申请日：1982-07-05
Applicant: RCA CORP
Inventor： CHEN HSING-YAO
Abstract: An improved color picture tube has an inline electron gun for generating and directing three electron beams, a center beam and two side beams, along coplanar paths toward a screen of the tube. The gun includes a main focus lens for focusing the electron beams. The main focus lens is formed by two spaced electrode members each having three separate inline apertures therein. Each electrode also includes a peripheral rim. The peripheral rims of the two electrodes face each other. The apertured portion of each electrode is within a recess set back from the rim. The width of the recess in at least one of the electrodes is wider at the center beam path than at the side beam paths, measured perpendicular to the plane containing the electron beam paths.
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公开(公告)号：FI791127A
公开(公告)日：1979-10-13
申请号：FI791127
申请日：1979-04-05
Applicant: RCA CORP
Inventor： HUGHES RICHARD HENRY , CHEN HSING-YAO
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公开(公告)号：GB2175743B
公开(公告)日：1989-11-01
申请号：GB8610020
申请日：1986-04-24
Applicant: RCA CORP , RCA LICENSING CORP
Inventor： CHEN HSING-YAO
Abstract: The asymmetric beam focusing slot provides a two-part crossover of the electron beams. The slot has a length greater than the spacing between the outer apertures and a width greater than the diameter of the apertures. The screen grid also has an improved refraction lens which comprises a transversely disposed recessed portion including a substantially rectangularly-shaped central portion and substantially triangularly-shaped end parts. The refraction lens provides a compensating field between the screen grid and the main electron lens to offset any changes in the main electron lens caused by variations in the focus voltage in the main electron lens. The recessed portion has a length, extending in the plane of the electron beams, at least coextensive with the length of the slot, and a width, extending substantially orthogonal to the plane of the electron beams, substantially greater than the width of the slot. The recessed portion is surrounded by a peripheral rim which conforms to the shape of the recessed portion. The central part of the peripheral rim is remote from the center aperture, and the triangularly-shaped end parts of the rim are in proximity to the outer apertures, thereby affecting the electrostatic field in the vicinity of the outer apertures by tilting the field lines within the recessed portion.
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