Fingerprint identification terminal equipment
A fingerprint identification and terminal equipment technology, applied in the field of communication, can solve problems such as easily generating Newton rings and affecting the accurate collection of infrared light signals
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Embodiment 1
[0031] First, through figure 1 and Figure 4 According to Embodiment 1 of the present invention, a fingerprint recognition terminal device for fingerprint recognition in an LCD screen includes a glass cover plate 140, an LCD liquid crystal panel 130, a backlight module 120 and Fingerprint recognition sensor 110. The backlight module includes a light source 10, a light guide plate 12 arranged on one side of the light source 10, a reflective sheet 11 arranged below the light guide plate 13, and a reflective sheet 11 arranged between the light guide plate 13 and the reflective sheet 11. The light-transmitting sheet 12 is provided with a light-transmitting structure on the light-transmitting sheet 12. The size of the transparent sheet 12 corresponds to that of the light guide plate 13 . In order to avoid the influence of Newton's rings generated between the light guide plate 13 and the reflection sheet 11 on the fingerprint identification signal, the thickness of the light-tran...
Embodiment 2
[0035] Please refer to Figure 5 , is an exploded view of the backlight module of the fingerprint identification terminal device according to Embodiment 2 of the present invention. Only the differences between Embodiment 2 and Embodiment 1 will be described below, and the similarities will not be repeated here.
[0036] The size of the transparent sheet 12 corresponds to the fingerprint recognition area of the fingerprint recognition terminal device.
Embodiment 3
[0038] Please refer to Figure 6 , is an exploded view of the backlight module of the fingerprint identification terminal device according to Embodiment 3 of the present invention. In the following, only the differences between Embodiment 3 and Embodiment 1 will be described, and the similarities will not be repeated here.
[0039] The fingerprint identification terminal device is not provided with a transparent sheet, but a transparent structure 12 is provided between the light guide plate 13 and the reflective sheet 11 . The transparent structure 12 is disposed on the reflective surface of the reflective sheet 11 . The light-transmitting structures 12 are radially distributed, and the density of the light-transmitting structures 12 near the fingerprint recognition area is higher than the density of the light-transmitting structures 12 in the far fingerprint recognition area. The transparent structure 12 is a circular prism.
[0040] The thickness of the light-transmitting...
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Abstract
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