Biometric verification device
AssigneeAu Optronics Corporation
InventorHsun-Chen Chu
Life of this patent
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Abstract
A biometric verification device includes a backlight module, a photodetector, a switching element, and at least one collimation structure. The photodetector is disposed on the backlight module. The switching element is disposed on the backlight module and electrically connected with the photodetector. The at least one collimation structure is disposed on the backlight module and has a first pinhole and a second pinhole. The horizontal projections of the first pinhole and the second pinhole on the backlight module do not overlap with the horizontal projection of the photodetector on the backlight module.
Claims16
A biometric verification device, comprising:
- a backlight module;
- a photodetector, disposed on the backlight module;
- a switching element, disposed on the backlight module, and electrically connected with the photodetector;
- and
- at least one collimation structure, disposed on the backlight module, and having a first pinhole and a second pinhole therein,
- wherein horizontal projections of the first pinhole and the second pinhole on the backlight module do not overlap with a horizontal projection of the photodetector on the backlight module,
- wherein the first pinhole and the second pinhole are defined by a first collimation layer and a second collimation layer, respectively, and a ratio of a distance between the first pinhole and the second pinhole in a normal direction of the first collimation layer to a width of one of the first pinhole and the second pinhole falls within a range of 5 to 10.
Dependencies are inferred from the claim text.