| 摘要 |
Colour display tube comprising in an evacuated envelope means to generate a number of electron beams (3,4,5), a display screen (6) comprising a large number of areas (16) luminescing in different colours, and colour selection means (7) which assign each electron beam (3,4,5) to luminescent areas (16) of one colour, which colour selection means (7) comprise a metal plate (11) which is provided with rows of apertures (9) and which forms a first set of electrodes against which, between said rows, spherical or rod-shaped carriers (13) of insulating material are fixed by means of an adhesive, to which carriers (13) elongate conductors (14) are connected which form a second system of electrodes between which systems a potential difference is applied in which grooves (12,15) are present both in the metal plate (11) between the rows of apertures (9) and in the elongate conductors (14) in the longitudinal direction of said conductors (24), in which grooves (12,15) the carriers (13) are centred unambiguously and are secured in that there are per carrier (13) only two points or lines of contact (17,18,19,20) in each groove (12,15) and in that the carriers (13) are secured to the system (14) having the lower potential by means of an electrically conductive adhesive (21) in the grooves (15), and substantially no flash-overs occur between the systems of electrodes. |
