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    2.
    发明专利
    未知

    公开(公告)号：FI792716A

    公开(公告)日：1980-03-09

    申请号：FI792716

    申请日：1979-08-31

    Applicant: RCA CORP

    Inventor： D AMATO RALPH JAMES ,  NOLAN RICHARD ADDISON

    IPC: H01J9/14 ,  H01J29/07 ,  H01J

    Abstract: The present invention provides an improvement in an apertured mask type color picture tube having a faceplate, a cathodoluminescent screen on the faceplate, a corrugated apertured mask adjacent the screen and an electron gun means for producing and directing a plurality of electron beams through the mask to impinge upon the screen. The mask is constructed by first forming the apertures therein and thereafter forming the mask in a corrugated shape. Aperture width in the apertured but unformed mask is adjusted to compensate for stretching and compression of the mask occurring during formation of the mask into a corrugated shape. Therefore, the corrugated mask is substantially free of aperture width variation from that desired caused by forming the mask in a corrugated shape.

    4.
    发明专利
    未知

    公开(公告)号：FR2472262A1

    公开(公告)日：1981-06-26

    申请号：FR8026265

    申请日：1980-12-11

    Applicant: RCA CORP

    Inventor： NOLAN RICHARD ADDISON

    IPC: H01J9/14 ,  H01J29/07 ,  H01J31/20 ,  H01J29/06

    Abstract: A color picture tube having a slit type apertured mask, wherein the slit apertures are arranged in columns and the apertures in each column are separated by webs is improved by constructing the mask with portions of full thickness and portions of reduced thickness. The portions of full thickness consist of strips between the aperture columns and islands at the webs. The strips and islands are separated from each other by the portions of reduced thickness. The cross-sectional area of each web is substantially uniform across the web.

    5.
    发明专利
    未知

    公开(公告)号：DE2936233A1

    公开(公告)日：1980-03-13

    申请号：DE2936233

    申请日：1979-09-07

    Applicant: RCA CORP

    Inventor： D AMATO RALPH JAMES ,  NOLAN RICHARD ADDISON

    IPC: H01J9/14 ,  H01J29/07 ,  H01J9/02

    Abstract: The present invention provides an improvement in an apertured mask type color picture tube having a faceplate, a cathodoluminescent screen on the faceplate, a corrugated apertured mask adjacent the screen and an electron gun means for producing and directing a plurality of electron beams through the mask to impinge upon the screen. The mask is constructed by first forming the apertures therein and thereafter forming the mask in a corrugated shape. Aperture width in the apertured but unformed mask is adjusted to compensate for stretching and compression of the mask occurring during formation of the mask into a corrugated shape. Therefore, the corrugated mask is substantially free of aperture width variation from that desired caused by forming the mask in a corrugated shape.

    6.
    发明专利
    未知

    公开(公告)号：IT1150063B

    公开(公告)日：1986-12-10

    申请号：IT2609580

    申请日：1980-11-19

    Applicant: RCA CORP

    Inventor： NOLAN RICHARD ADDISON

    IPC: H01J9/14 ,  H01J29/07 ,  H01J31/20 ,  H01J

    Abstract: A color picture tube having a slit type apertured mask, wherein the slit apertures are arranged in columns and the apertures in each column are separated by webs is improved by constructing the mask with portions of full thickness and portions of reduced thickness. The portions of full thickness consist of strips between the aperture columns and islands at the webs. The strips and islands are separated from each other by the portions of reduced thickness. The cross-sectional area of each web is substantially uniform across the web.

    Colour picture tube with improved shadowmask
    7.
    发明专利
    Colour picture tube with improved shadowmask 未知

    公开(公告)号：FR2576452A1

    公开(公告)日：1986-07-25

    申请号：FR8600623

    申请日：1986-01-17

    Applicant: RCA CORP

    Inventor： NOLAN RICHARD ADDISON

    IPC: H01J29/07

    Abstract: Colour picture tube which comprises a generally rectangular shadowmask mounted with a spacing with respect to a cathodo luminescent screen, inside the envelope of the said tube, this shadowmask including a perforated central portion, an intermediate peripheral portion surrounding the said perforated central portion, and a skirt-shaped peripheral portion surrounding this intermediate portion, characterised in that at least two opposite sides of the said shadowmask include a plurality of spaced parallel grooves 44, 46 on the two main surfaces of the said mask, in the said intermediate portion 34, the grooves 44 on one main surface being offset with respect to the grooves 46 on the other main surface, so that the presence of grooves enables the grooved region of the said intermediate portion to expand when the mask is formed, thereby reducing the distortion of the perforated central portion 32 of the mask.

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