Display device, in particular for cooktops

摘要

A display device in particular for cooktops is provide that has a glass ceramic with a front side and a back side and a lamp arranged in the area of the back side. The display device further includes an optical compensation filter arranged between the front side and the lamp so as to implement any color impressions easily and inexpensively and in a preselectable manner.

主权项

1. A display device for cooktops, comprising:
a colored glass ceramic panel forming a glass ceramic front side and a glass ceramic back side, the glass ceramic panel having a mean transmission greater than 0.2% for each of the spectral ranges of 420-500 nm, 500-620 nm, and 550-640 nm, and the glass ceramic panel having a maximum transmission less than 40% in the spectral range of 400 to 750 nm and less than an average of 4% in the spectral range of 450 to 600 nm; a lamp arranged in an area of the glass ceramic back side, the lamp being either a combination of at least a blue LED, a green LED, and red LED or being a white lamp; and an optical compensation filter arranged between the glass ceramic front side and the lamp with the glass ceramic panel and the compensation filter forming two filters arranged one after another such that a shift in a standard chromaticity coordinate x, y in the CIE Norm Valent System CIExyY (CIE: Commision Internationale de l'Eclaireage, 1931, 2° observer) of the lamp due to filter properties of the glass ceramic panel is corrected by a combination of the glass ceramic panel and the compensation filter to yield a desired chromaticity coordinate x, y in the CIE Norm Valent System CIExyY (CIE: Commision Internationale de l'Eclaireage, 1931, 2° observer).