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sensor

A technology of sensors and components, applied in the direction of instruments, computing, electrical digital data processing, etc., can solve the problems of high waste quantity and manufacturing cost

Inactive Publication Date: 2017-10-03
OERLIKON TRADING AG TRUEBBACH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage is that this involves an expensive 3-layer system with a correspondingly high amount of scrap and production costs

Method used

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Embodiment Construction

[0008] figure 1 The OFN shown in includes the middle region and the edges. The middle area is black, the edges should have a chrome look in daylight and backlit in low ambient light. Therefore, the edge must be at least partially transparent to visible light. The intermediate region must be transparent to infrared radiation in order to function as an OFN. Radiation having a wavelength of greater than 780 nm and preferably less than 1400 nm is considered to be infrared radiation in the sense of the present invention.

[0009] Black-dyed polycarbonate was used for the middle area and clear polycarbonate was used for the edges. These can be flushed together. After rinsing, the components are cleaned in ultrasonic electrolyte baths and subsequently dried. The central region is now covered, ie covered, for example by means of gluing, since the central region is not coated with a metal layer. Only the edges are exempt from masking.

[0010] The components are then coated with...

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Abstract

The present invention relates to an infrared sensor, in particular to an optical finger navigation module, which has an assembly applied as a cover glass for the sensor, wherein the assembly comprises a sensor area and a transparent area, wherein the transparent area has a thin, visible light At least partially permeable layer system comprising at least one layer, and said at least one layer is a metal layer, a semiconductor layer and / or a combination of metals and / or semiconductors, or comprises at least one metal and at least one A combination of semiconductors, characterized in that not only the semiconductor regions but also the transparent regions are covered with a UV-cured cured lacquer layer.

Description

technical field [0001] The present invention relates to an optical finger navigation module (OFN). Such sensors are used, for example, in mobile telephones. Here, according to one specific embodiment, such a sensor is primarily used as an infrared camera for recording fingertip movements and converting them into cursor movements. A module is described in DE 10 2009 043 800 A1, which is based on the fact that light from an IR light source is reflected on the finger and the light is received during the reflection. Adjacent digital images are compared to each other to calculate motion information. Background technique [0002] In many cases, the corresponding sensors are covered by a polycarbonate cover plate and protected from the surrounding environment. In this context, it would be desirable to provide a metal finish at least for the corresponding surface parts in order to realize, for example, a day-and-night design (Tag-Nacht design), so that the difficulty arises that ...

Claims

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Application Information

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IPC IPC(8): G06F3/042
CPCG06F3/042G06F3/0304G06F3/03547
Inventor A.克克斯
Owner OERLIKON TRADING AG TRUEBBACH
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