Optical sensing module

Abstract

The invention provides an optical sensing module, which comprises a photosensitive element layer; the shading lamination layer is arranged on the photosensitive element layer; the lens layer is arranged on the shading laminated layer; and a plurality of light-transmitting channels. The shading laminated layer is at least provided with a first color filter film layer and a second color filter film layer which are stacked in sequence from the photosensitive element layer. The first color filter film layer has a first penetrating light wave band, and the second color filter film layer at least partially blocks the first penetrating light wave band. The lens layer includes a plurality of lenses. The plurality of light-transmitting channels are arranged corresponding to the plurality of lenses respectively, penetrate through the light-shielding lamination layer and are surrounded by the light-shielding lamination layer.

Description

technical field [0001] The invention relates to an optical sensing module. Specifically, the present invention relates to an optical sensing module with a plurality of color filter film layers stacked. Background technique [0002] Many optical sensors can perform expected sensing actions by utilizing whether light is incident or not and the light distribution map corresponding to each optical sensing unit. Based on the above, the common optical sensor can utilize the light-gathering layer of the microlens to focus and project the light on the sensor element at the focal distance, so as to read the characteristic information of the incident and distribution of the light. For example, optical sensors can be applied to biometric identification, such as fingerprints, palm prints, retina, iris, vein distribution, etc., so as to protect or switch personal information of digital devices, and can be used to improve information confidentiality and security . Therefore, this type ...

AI Technical Summary

Problems solved by technology

However, a single black matrix layer may only have a shading effect on light incident from a specific angle, and therefore multiple black matrix layers are required to shield light from different angles

In addition, in the currently widely used process, if a black matrix layer needs to be provided, it may unnecessarily increase the process of transferring factories and the consumption of production capacity, which is not conducive to reducing manufacturing costs and increasing manufacturing efficiency.

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