Backlight Modules and Display Devices

Abstract

Embodiments of the present invention provide a backlight module and a display device, including: a casing, a light guide plate, a first flexible circuit board, and a plurality of first light sources; the light guide plate, the first light source and the first flexible circuit board are arranged on the casing In the accommodation space formed by the bottom plate and the side plate of the body; the bottom plate includes a first bottom plate part, a convex part and a second bottom plate part which are connected and arranged along the first direction, and the distance between the first bottom plate part and the light guide plate is greater than that of the second bottom plate part. the distance between the bottom plate part and the light guide plate; the orthographic projection of the first light source and at least part of the first flexible circuit board on the bottom plate is located on the first bottom plate part; the backlight module includes a biometric light source, and the biometric light source is located on the bottom plate away from the backlight module One side of the light emitting surface, and the orthographic projection on the bottom plate is located on the convex part; the second bottom plate part is also provided with a first opening, and the light emitted by the biometric light source is emitted to the light emitting surface of the backlight module through the first opening. The embodiments of the present invention can reduce the length of the glass cover plate, which is beneficial to the narrow frame design of the display device.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a backlight module and a display device. Background technique [0002] Recently, in order to achieve a full-screen or near-full-screen effect, under-screen biometric detection technology has emerged, that is, placing a biometric detection unit under the display screen, and sending or emitting a detection beam through the display screen to achieve biometric detection. Taking fingerprint recognition technology as an example, the display device usually adopts the fingerprint recognition technology under the screen to realize its fingerprint recognition function; the realization principle is to set the fingerprint recognition sensor in the display module, and use the light source that provides detection light for fingerprint recognition to emit detection light. , part of the light is reflected by the fingerprint to the fingerprint recognition sensor, the sensor collects the ...

AI Technical Summary

Problems solved by technology

[0003] Embodiments of the present invention provide a backlight module and a display device to solve the problem of increasing the length of the glass cover in the prior art where the biometric light source occupies the glass cover, which is beneficial to the narrow frame design of the display device; Effective use of biometric light to improve biometric detection accuracy

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