Koninklijke Philips Corporation N.v.

Dani&euml;l Den Engelsen

Rudolf Maria Jozef Voncken

Ronald Van Der Wilk

Willem M Van Alphen

Michiel Harjon Wassink

Leendert Vriens

Mark N Jonkhof

Antonius H J Willems

A cathode ray tube having a tensioned shadow mask with elongated holes, i.e. holes with a length longer than 5 mm. The pattern of holes repeats itself after 5 or more rows and the relation between the number of rows after which the pattern repeats itself, the vertical pitch a and the horizontal pitch d is given by a /d &lE;n &lE;8a /d , most preferably n &ap;2a /d .

CRT with improved slotted mask

A color cathode ray tube comprises an electron gun and a deflection unit, the electron gun being arranged in a neck portion of an envelope, and the deflection unit being arranged around the envelope. The neck portion of the envelope includes a first part in which the electron gun is arranged. Behind this first part, the neck portion narrows (the outside diameter decreases). The deflection unit is at least partly provided around this narrowed part.

Cathode ray tube with narrowed neck portion

Growing community of inventors

Eindhoven, Netherlands

Daniël Den Engelsen

Growing community of inventors

Eindhoven, Netherlands

Dani&euml;l Den Engelsen

Daniël Den Engelsen