Fingerprint identification area indicating device based on multi-color electrochromic structure and application of fingerprint identification area indicating device
A technology of fingerprint identification and indication device, applied in the optical or photoelectric field, can solve the problems affecting the integrity of electronic equipment, the sealing performance of the whole machine, etc., and achieve the effect of improving the integration and fingerprint identification efficiency and broad application prospects.
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Embodiment 1
[0146] Embodiment 1 This embodiment discloses an electronic device based on a multi-color electrochromic structure fingerprint identification area indicator device, including a cover plate, a multi-color electrochromic structure, a fingerprint identification component, and, together with the multi-color electrochromic structure, A processor electrically connected to the fingerprint identification component; the processor can regulate the light transmittance of the colorful electrochromic structure, so that it is in an active state when the fingerprint identification component detects that a user's finger is approaching, so that the multi-color electrochromic structure The color change of the color electrochromic structure is different from the color of the cover plate, so as to indicate the position of the fingerprint recognition area, and when the fingerprint recognition component is in an inactive state, the color of the colorful electrochromic structure is consistent with the...
Embodiment 2
[0148] Embodiment 2 This embodiment discloses an electronic device based on a multi-color electrochromic structure fingerprint identification area indicator device, including a cover plate, a multi-color electrochromic structure, a fingerprint identification component, and, together with the multi-color electrochromic structure, A processor electrically connected to the fingerprint identification component; the processor can regulate the light transmittance of the colorful electrochromic structure, so that it is in an active state when the fingerprint identification component detects that a user's finger is approaching, so that the multi-color electrochromic structure The color change of the color electrochromic structure is different from the color of the cover plate, so as to indicate the position of the fingerprint recognition area, and when the fingerprint recognition component is in an inactive state, the color of the colorful electrochromic structure is consistent with the...
Embodiment 3
[0154] A working electrode of a colorful electrochromic structure provided in this embodiment includes a first optical structure layer, a second optical structure layer, a dielectric layer and a base layer, which can be referred to Image 6 shown.
[0155] Wherein, the first optical structure layer is air, the second optical structure is a metal tungsten (W) layer, the medium layer is formed of tungsten oxide, and the base layer may be PET film.
[0156] The preparation method of the working electrode of the colorful electrochromic structure is as follows: on a clean PET substrate, a layer of tungsten film is firstly sputtered by magnetron sputtering. Preferably, the thickness of the tungsten film is selectively sputtered to be about 10nm. Then a layer of tungsten oxide is sputtered on the tungsten film by magnetron sputtering. Preferably, the thickness of the tungsten oxide layer is set at 100nm-400nm.
[0157] Of course, the aforementioned tungsten film can also be prepare...
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