Backlight module, under-screen fingerprint identification apparatus and electronic device

An electronic device comprising:

• an under-screen fingerprint identification apparatus comprising a fingerprint identification module;
• and
• a backlight module, wherein the fingerprint identification module is disposed under the backlight module and configured to receive an infrared light signal passing through the backlight module that is emitted by an infrared light source and illuminates a human finger, wherein the infrared light signal is used to detect fingerprint information of the finger;
• wherein the backlight module comprises:
• a diffusion layer, wherein a haze of an infrared light signal passing through the diffusion layer is less than a haze of visible light passing through the diffusion layer and light transmittance of an infrared light signal passing through the diffusion layer is greater than light transmittance of visible light passing through the diffusion layer;
• and
• wherein the backlight module comprises:
• a reflection layer, wherein light transmittance of an infrared light signal passing through the reflection layer is greater than light transmittance of visible light passing through the reflection layer.

A backlight module for under-screen fingerprint identification, wherein

• the backlight module is configured to transmit an infrared light signal that is emitted by an infrared light source and illuminates a human finger to a fingerprint identification module, and the infrared light signal is used to detect fingerprint information of the finger;
• wherein the backlight module comprises:
• a diffusion layer, wherein a haze of the infrared light signal passing through the diffusion layer is less than a haze of the visible light passing through the diffusion layer and light transmittance of the infrared light signal passing through the diffusion layer is greater than light transmittance of the visible light passing through the diffusion layer;
• and
• a reflection layer, wherein light transmittance of the infrared light signal passing through the reflection layer is greater than light transmittance of the visible light passing through the reflection layer.