Read-out device and procedure for its manufacture

Abstract

Displays for information exist, which appear to emerge out of a solid piece of metal. In order to obtain an aluminium-like and translucent material, according to prior art glass has aluminium vapour deposited onto the front surface, and a diode matrix display is hidden behind this translucent material while inactive, whereas it becomes visible when lit. In order to avoid the use of glass and to make the metal surface and the display surface indistinguishable from each other under all lighting conditions, the surface is made out of the piece of material constituting the surrounding parts. A cavity is formed from behind, and the bottom of said cavity is made very thin and hence translucent by etching or a similar material removing process. Oxide layers support this translucent layer, and an internal support is provided in the cavity, said support also carrying the sources of light.

Description

technical field [0001] The present invention relates to an illuminated character and symbol reading device integrally formed with a surrounding surface. Background technique [0002] It is well known that the readout device is a black matrix, and the black matrix is ​​activated by lighting the light-emitting elements on the pattern hidden behind the black matrix. Such a substrate can be made, for example, of black glass, through which the light from light-emitting diodes arranged in a suitable matrix passes. In the inactive state, there is apparently no readout or display, which can be seen as a feature of the industrial design used on the device. Display devices are known which are capable of displaying characters on any surface, that is, any surface other than black. This requires projection from a projector mounted in front of the display and is not suitable for home installations. [0003] Furthermore, the use of glass plates as light guides is also known, in which ap...

AI Technical Summary

Problems solved by technology

However, under certain other lighting conditions, it is likely to still be seen as a matrix of holes, and the illuminated characters can only be in a narrow range around the axis, that is, almost frontally, to see

Moreover, drilling holes will also destroy the oxidation protection layer on the surface, causing light refraction so that the outline of the display can be seen

Aluminum has been recognized as being able to be vapor-deposited onto a translucent surface, making the surface both translucent and fully metallic, but the use of this technology requires a glass-like material that can be mounted Around the aluminum surface, or covering the entire surface, so that the overall impression of the aluminum structure is destroyed

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