公开(公告)号：KR830001485B1

公开(公告)日：1983-07-30

申请号：KR770002302

申请日：1977-09-30

Applicant: RCA CORP

Inventor： MORREL ALBERT MAXWELL

IPC: H01J29/07

Abstract: A shadow mask type of cathode ray tube is improved by corrugation of the mask having a lot of holes and support of the corrugated mask at points of inflection at the edges of the mask.

公开(公告)号：FR2592218B1

公开(公告)日：1989-11-24

申请号：FR8617690

申请日：1986-12-17

Applicant: RCA CORP

Inventor： MORREL ALBERT MAXWELL ,  MASTERTON WALTER DAVID ,  BAUDER RICHARD CLARK

IPC: G03B41/00 ,  H01J9/227 ,  H01J31/20

Abstract: The present invention is an improvement in a method of screening a line screen slit mask color picture tube. Such method includes coating a faceplate panel of the tube with a photosensitive material, inserting a slit shadow mask into the panel and exposing the photosensitive material by passing light from a line light source through the slits of the mask. Such method further comprises positioning a generally cylindrical shaped lens between the line light source and the faceplate panel during exposure of the photosensitive material. The longitudinal axis of the lens is oriented perpendicular to the longitudinal axis of the line light source. The improvement comprises moving both the faceplate panel and the cylindrical shaped lens in synchronization in a direction parallel to the line light source during the exposing step.

公开(公告)号：IT8422510D0

公开(公告)日：1984-09-04

申请号：IT2251084

申请日：1984-09-04

Applicant: RCA CORP

Inventor： AMATO RALPH JAMES D ,  GODFREY RICHARD HUGH ,  MORREL ALBERT MAXWELL ,  RAGLAND FRANK ROWLAND JR

IPC: H01J29/86 ,  H04N5/64 ,  H01J

Abstract: Improvement is provided in the appearance of a color picture type cathode-ray tube including rectangular faceplate with an exterior surface having curvature along both the minor (Y-Y) and major (X-X) axes. At least in the center portion of the faceplate, the curvature along the minor axis is at least 10 percent greater than the curvature along the major axis. Points on the exterior surface near the ends of the major axis, at the edges of the screen, lie in a first plane (P1) perpendicular to the central axis (Z-Z) of the tube; points on the exterior surface near the ends of the minor axis, at the edges of the screen, lie in a second plane (P2) which is spaced from and parallel to the first plane; and points on the exterior surface near the ends of the diagonals of the rectangular faceplate, at the edges of the screen, lie in a third plane (P3) which is spaced from and parallel to the first plane. The three planes are spaced from the center portion of the faceplate in the order of second plane, first plane and third plane. Further relative dimensions are detailed.

公开(公告)号：IT1176642B

公开(公告)日：1987-08-18

申请号：IT2251084

申请日：1984-09-04

Applicant: RCA CORP

Inventor： D AMATO RALPH JAMES ,  GODFREY RICHARD HUGH ,  MORREL ALBERT MAXWELL ,  RAGLAND JR FRANK ROWLAND

IPC: H01J29/86 ,  H04N5/64 ,  H01J

Abstract: Improvement is provided in the appearance of a color picture type cathode-ray tube including rectangular faceplate with an exterior surface having curvature along both the minor (Y-Y) and major (X-X) axes. At least in the center portion of the faceplate, the curvature along the minor axis is at least 10 percent greater than the curvature along the major axis. Points on the exterior surface near the ends of the major axis, at the edges of the screen, lie in a first plane (P1) perpendicular to the central axis (Z-Z) of the tube; points on the exterior surface near the ends of the minor axis, at the edges of the screen, lie in a second plane (P2) which is spaced from and parallel to the first plane; and points on the exterior surface near the ends of the diagonals of the rectangular faceplate, at the edges of the screen, lie in a third plane (P3) which is spaced from and parallel to the first plane. The three planes are spaced from the center portion of the faceplate in the order of second plane, first plane and third plane. Further relative dimensions are detailed.

公开(公告)号：FR2592218A1

公开(公告)日：1987-06-26

申请号：FR8617690

申请日：1986-12-17

Applicant: RCA CORP

Inventor： MORREL ALBERT MAXWELL ,  MASTERTON WALTER DAVID ,  BAUDER RICHARD CLARK

IPC: G03B41/00 ,  H01J9/227 ,  H01J31/20

Abstract: The present invention is an improvement in a method of screening a line screen slit mask color picture tube. Such method includes coating a faceplate panel of the tube with a photosensitive material, inserting a slit shadow mask into the panel and exposing the photosensitive material by passing light from a line light source through the slits of the mask. Such method further comprises positioning a generally cylindrical shaped lens between the line light source and the faceplate panel during exposure of the photosensitive material. The longitudinal axis of the lens is oriented perpendicular to the longitudinal axis of the line light source. The improvement comprises moving both the faceplate panel and the cylindrical shaped lens in synchronization in a direction parallel to the line light source during the exposing step.