| 摘要 |
<p>A display screen (3) of a cathode ray tube (1), or of another display device, which display screen is provided with phosphors, is coated with a spectrally selective, light-absorbing coating (8) comprising silicon oxide and at least two dyes. The spectral transmissions for blue, green and red phosphor light are chosen to be such that the electron currents towards the blue, green and red phosphors for obtaining white D (6,500 K) are equal. By virtue thereof, coloured edges around a white imaging spot are precluded, particularly at large electron currents.</p> |
