-
公开(公告)号：GB2135507A
公开(公告)日：1984-08-30
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.
-
公开(公告)号：PL237382A1
公开(公告)日：1983-01-31
申请号：PL23738282
申请日：1982-07-09
Applicant: RCA CORP
Inventor： CHEN HSING-YAO , HUGHES RICHARD H
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.
-
公开(公告)号：AU4515779A
公开(公告)日：1979-10-18
申请号：AU4515779
申请日：1979-03-15
Applicant: RCA CORP
Inventor： HUGHES RICHARD HENRY , CHEN HSING-YAO
-
公开(公告)号：FR2556499B1
公开(公告)日：1992-09-04
申请号：FR8418826
申请日：1984-12-10
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.
-
公开(公告)号：FR2545647B1
公开(公告)日：1988-06-10
申请号：FR8406943
申请日：1984-05-04
Applicant: RCA CORP
Inventor： HEKKEN FRANS VAN , CHEN HSING-YAO
Abstract: An inline electron gun for a cathode-ray tube includes a plurality of cathodes, a control grid, a screen grid and a main focus lens arranged successively in alignment with the cathodes for focusing a plurality of electron beams along beam paths onto a screen. The screen grid has a functional grid area with a given thickness. A recessed portion is formed within the functional grid area. A plurality of apertures are formed within the recessed portion of the screen grid. The recessed portion is surrounded by a peripheral rim which is in proximity to the outer apertures thereby affecting the electrostatic field in the vicinity of the outer electron beam paths.
-
Patent Agency Ranking
公开(公告)号：GB2154789B
公开(公告)日：1988-05-11
申请号：GB8503765
申请日：1985-02-14
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, a center aperture and two side apertures. The improvement comprises each of the apertures in each of the focus lens electrodes having a shape that distorts a portion of the focus lens thereat, to at least partially compensate for an astigmatic effect within the tube that acts on an associated electron beam. The side apertures in both of the electrodes are nonsymmetrical about axes that pass through the respective side apertures and are perpendicular to the initial coplanar paths of the electron beams.
-
57.发明专利
公开(公告)号：CA1212144A
公开(公告)日：1986-09-30
申请号：CA453157
申请日：1984-04-30
Applicant: RCA CORP
Inventor： VAN HEKKEN FRANS , CHEN HSING-YAO
Abstract: An inline electron gun for a cathode-ray tube includes a plurality of cathodes, and a control grid, a screen grid and main focus lens electrodes arranged successively in alignment with the cathodes for focusing a plurality of electron beams along beam paths onto a screen. The screen grid has a functional grid area with a given thickness. A recessed portion is formed within the functional grid area. A plurality of apertures are formed within the recessed portion of the screen grid. The recessed portion is surrounded by a peripheral rim which is in proximity to the outer apertures, thereby affecting the electrostatic field in the vicinity of the outer electron beam paths.
-
公开(公告)号：BR8505150A
公开(公告)日：1986-07-29
申请号：BR8505150
申请日：1985-10-16
Applicant: RCA CORP
Inventor： CHEN HSING-YAO
Abstract: An inline electron gun (26:26 min ) for a cathode-ray tube (8) includes an improved beam forming region comprising three cathodes (34), a control grid (36) and a novel screen grid electrode means (38,38 min ), the latter comprising two spaced apart metal members (G2a, G2b;G2a min ,G2b min ). In one embodiment (26), the first member (G2a) closest to the control grid is relatively thick and has three slots (52) formed in one surface thereof facing away from the control grid. Circular apertures (54) are formed within the slots and extend through the body of the first member. The second member (G2b) has three circular apertures (56) therethrough aligned with the circular apertures in the first member. When a dynamic signal is superimposed on the DC bias voltage and applied to the second member, the first member shields the control grid from the dynamic signal so that little or no brightness modulation occurs. In a second embodiment (26 min ), the first (G2a min ) and second (G2b min ) members of the screen grid (38 min ) are structurally interchanged. In a third embodiment, the first (G2a) and the second (G2b) members have orthogonally disposed rectangular slots formed in facing surfaces.
-
59.发明专利
公开(公告)号：CA1206512A
公开(公告)日：1986-06-24
申请号：CA445058
申请日：1984-01-11
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.
-
公开(公告)号：CS238629B2
公开(公告)日：1985-12-16
申请号：CS528882
申请日：1982-07-09
Applicant: RCA CORP
Inventor： CHEN HSING-YAO , HUGHES RICHARD H
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.
-
-
-
-
-
-
-
-
-
Search Results
68
records
(took 0.022 seconds)
