CN211403017U

CN211403017U - Fingerprint module and LCD module integral type structure under LCD screen

Info

Publication number: CN211403017U
Application number: CN202020433027.0U
Authority: CN
Inventors: 刘兴; 韩文松; 张业; 李山萌; 郑瑞建
Original assignee: Truly Opto Electronics Ltd
Current assignee: Truly Opto Electronics Ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-09-01
Anticipated expiration: 2030-03-30

Abstract

The utility model discloses a fingerprint module and LCD module integral type structure under LCD screen, fingerprint module and LCD module integral type structure include from last apron, LCD module, backlight unit, the fingerprint module and the circuit board subassembly down that stacks gradually the setting down under the LCD screen, circuit board subassembly electric connection LCD module and backlight unit extend to backlight unit's below, fingerprint module electric connection forms the integral type structure on circuit board subassembly and form between backlight unit and circuit board subassembly under the LCD screen, and the shipment is given the customer end again after the fingerprint module assembles as a whole under LCD module and the LCD screen, has effectively reduced customer's equipment process, has also reduced the defective percentage of equipment.

Description

Fingerprint module and LCD module integral type structure under LCD screen

Technical Field

The utility model relates to a show technical field, more specifically relate to a fingerprint module and LCD module integral type structure under LCD screen.

Background

Fingerprint identification schemes of smart phones are traditionally of a capacitive type, an ultrasonic type and the like, and optical fingerprint identification schemes are applied in recent years, but most of the fingerprint identification schemes are still applied to high-end models, such as an OLED display screen. Increasingly, optical fingerprint identification schemes are also trending toward the middle and low end LCD display screen area. Simultaneously, along with the integral demand of full screen and cell-phone appearance design, the fingerprint identification module is hidden to the inside mainstream trend that will be called of whole machine, therefore each fingerprint identification chip producer is working on under research and development hidden LCD screen fingerprint identification technique.

SUMMERY OF THE UTILITY MODEL

In order to solve the not enough of prior art, the utility model provides a fingerprint module and LCD module integral type structure under the LCD screen, LCD module and LCD screen fingerprint module assembly are shipment for the customer end after a whole again, have effectively reduced customer's equipment process, have also reduced the defective percentage of equipment.

The utility model discloses the technological effect that will reach is realized through following scheme: the utility model provides a fingerprint module and LCD module integral type structure under LCD screen, fingerprint module and LCD module integral type structure include from last apron, LCD module, backlight unit, the fingerprint module and the circuit board subassembly under the LCD screen that down range upon range of setting in proper order under the LCD screen, circuit board subassembly electric connection LCD module and backlight unit extend to backlight unit's below, fingerprint module electric connection forms the integral type structure on circuit board subassembly and between backlight unit and circuit board subassembly under the LCD screen.

Preferably, the backlight module comprises a backlight iron frame, a light guide assembly and a light inlet lamp assembly.

Preferably, the backlight iron frame is of a frame structure, the light guide assembly is arranged in the backlight iron frame, and the light incident lamp assembly is formed on the side surface of the light guide assembly to form the side-in type backlight module.

Preferably, the backlight iron frame is correspondingly provided with through holes at the positions where the fingerprint modules are arranged under the LCD screen.

Preferably, the backlight module is further provided with an infrared-permeable film.

Preferably, the LCD module further comprises an infrared light LED lamp assembly arranged on one side of the cover plate facing the LCD module.

Preferably, the fingerprint module under the LCD screen comprises a chip, a lens, a bracket, a reinforcing steel sheet and components.

Preferably, the chip is electrically connected with the circuit board assembly, the support is fixedly arranged on the circuit board assembly, the lens is fixed in the support, and the reinforcing steel sheet is arranged on one side surface of the circuit board, which faces away from the chip.

Preferably, the lower fingerprint module of the LCD screen is fixed on the lower end surface of the backlight module by adhesive bonding.

Preferably, the LCD module still includes the female seat of ZIF connector, the female seat of ZIF connector is fixed to be set up on the circuit board subassembly, the female seat electric connection of ZIF connector that the fingerprint module passes through circuit board subassembly and LCD module under the LCD screen.

The utility model has the advantages of it is following:

through setting up the integral type structure with fingerprint module under the LCD screen, the shipment is given the customer end again after LCD module and the assembly of fingerprint module under the LCD screen are a whole, has effectively reduced customer's equipment process, has also reduced the defective percentage of equipment.

Drawings

FIG. 1 is a schematic plane structure diagram of an integrated structure of a lower fingerprint module and an LCD module of an LCD screen according to the present invention;

fig. 2 is a schematic view (local) of the structure test structure of the integrated structure of the fingerprint module and the LCD module under the LCD screen of the present invention.

Detailed Description

The invention is described in detail below with reference to the drawings, wherein examples of the embodiments are shown in the drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the interconnection of two elements or through the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The embodiment of the utility model provides a fingerprint module and LCD module integral type structure under LCD screen sets up the integral type structure with the LCD module through fingerprint module under the LCD screen, and the goods is delivered for the customer end after LCD module and LCD screen fingerprint module assembly are a whole again, has effectively reduced customer's equipment process, has also reduced the defective percentage of equipment.

The utility model discloses in, it is shown with fig. 2 to combine fig. 1, fingerprint module 400 and circuit board assembly 500 under LCD screen and LCD module integral type structure include from last apron 100, LCD module 200, backlight unit 300, the LCD screen that down stacks gradually the setting, circuit board assembly 500 electric connection LCD module 200 and backlight unit 300 extend to backlight unit 300's below, fingerprint module 400 electric connection forms the integral type structure under the LCD screen on circuit board assembly 500 and between backlight unit 300 and circuit board assembly 500.

Specifically, the backlight module 300 includes a backlight frame, a light guide assembly and a light incident assembly, wherein the backlight frame is in a frame structure, the light guide assembly is disposed in the backlight frame, and the light incident assembly is formed at a side of the light guide assembly to form the side-in type backlight module 300. It should be understood by those skilled in the art that the structure of the side-in type backlight module 300 is conventional in the art, and the present invention is not limited by the drawings.

In order to make the fingerprint on the LCD module 200 recognized by the LCD screen lower fingerprint module 400, the backlight iron frame is correspondingly provided with through holes 310 at the positions where the LCD screen lower fingerprint module 400 is disposed, so that the light can penetrate through the light guide assembly. When the utility model discloses a fingerprint module 400 adopts infrared fingerprint identification technique under the LCD screen, backlight unit 300 still is equipped with the permeable infrared membrane (not shown in the figure) to infrared light passes backlight unit 300.

The integrated structure of the LCD module 200 and the LCD module 400 further includes an infrared LED lamp assembly 600, and the infrared LED lamp assembly 600 is preferably disposed on one side of the cover plate 100 facing the LCD module 200. The infrared LED lamp assembly 600 can be assembled after the integrated structure of the LCD screen lower fingerprint module 400 and the LCD module 200 is assembled, i.e. the infrared LED lamp assembly can be assembled by a customer.

The LCD screen lower fingerprint module 400 comprises a chip 410, a lens 420, a support 430, a reinforcing steel sheet 440 and a component 450, wherein the chip 410 is electrically connected with the circuit board assembly 500, the support 430 is fixedly arranged on the circuit board assembly 500, the lens 420 is fixed in the support 430, and the reinforcing steel sheet 440 is arranged on a side surface of the circuit board, which is back to the chip 410, and plays a role in supporting and fixing.

The lower fingerprint module 400 of the LCD screen is fixed on the lower end surface of the backlight module 300 by adhesive. The adhesive may be a double-sided adhesive a and/or a solid adhesive B, and may be adhered and fixed by the double-sided adhesive a, and then fixed by the solid adhesive B. LCD module 200 still includes the female seat 210 of ZIF connector, the female seat 210 of ZIF connector is fixed to be set up on circuit board subassembly 500, fingerprint module 400 can pass through circuit board subassembly 500 and the female seat 210 electric connection of ZIF connector of LCD module 200 under the LCD screen, realizes the electric intercommunication power supply. The circuit board assembly 500 includes a circuit board electrically connected to the backlight module 300, a circuit board electrically connected to the LCD module 200, and a circuit board electrically connected to the fingerprint module 400 under the LCD screen.

The utility model discloses a back is accomplished in the assembly of LCD screen lower fingerprint module 400 and LCD module 200 integral type structure, through circuit board subassembly 500 and client side mainboard connection and power supply, infrared light is launched to infrared light LED banks spare 600, the infrared light shines the bottom that reflects LCD module 200 behind people's the finger, install and sense the infrared light of reflection at LCD screen lower fingerprint module 400 photosensitive device of LCD module 200 bottom, calculate through chip 410, form the fingerprint pattern, realize responding to finger fingerprint.

In the present invention, the cover plate 100 is a glass cover plate 100.

The utility model discloses a LCD is Liquid Crystal Display's abbreviation, the chinese name is Liquid Crystal Display, and its structure is placed the Liquid Crystal box in the middle of two parallel glass substrates, makes TFT (thin film transistor) on the lower substrate glass, and last CF (color filter) of making of upper substrate glass changes the upset that comes control Liquid Crystal molecule through signal and voltage on the TFT to reach the polarized light of every pixel of control and emit or not, and reach the demonstration purpose.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention and not for limiting the same, and although the embodiments of the present invention are described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the embodiments of the present invention, and these modifications or equivalent substitutions cannot make the modified technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a fingerprint module and LCD module integral type structure under LCD screen, a serial communication port, fingerprint module and LCD module integral type structure include from the last apron, LCD module, backlight unit, the fingerprint module and the circuit board subassembly down that down range upon range of setting in proper order under the LCD screen, circuit board subassembly electric connection LCD module and backlight unit extend to backlight unit's below, fingerprint module electric connection forms the integral type structure on circuit board subassembly and between backlight unit and circuit board subassembly under the LCD screen.

2. The integrated structure of the LCD panel lower fingerprint module and the LCD module of claim 1, wherein the backlight module comprises a backlight iron frame, a light guide assembly and a light incident assembly.

3. The integrated structure of the LCD panel lower fingerprint module and the LCD module of claim 2, wherein the backlight iron frame is a frame structure, the light guide assembly is disposed in the backlight iron frame, and the light incident lamp assembly is formed at a side of the light guide assembly to form a side-in type backlight module.

4. The integrated structure of the LCD panel lower fingerprint module and the LCD module of claim 3, wherein the backlight iron frame is provided with through holes at positions corresponding to the positions of the LCD panel lower fingerprint module.

5. The integrated structure of the LCD panel lower fingerprint module and the LCD module as claimed in claim 4, wherein the backlight module is further provided with an infrared transparent film.

6. The integrated structure of the LCD panel lower fingerprint module and the LCD module as claimed in claim 1, further comprising an infrared LED lamp assembly disposed on a side of the cover plate facing the LCD module.

7. The integrated structure of the LCD panel lower fingerprint module and the LCD module of claim 1, wherein the LCD panel lower fingerprint module comprises a chip, a lens, a bracket, a reinforcing steel sheet and components.

8. The integrated structure of the LCD panel lower fingerprint module and the LCD module of claim 7, wherein the chip is electrically connected to the circuit board assembly, the bracket is fixedly disposed on the circuit board assembly, the lens is fixed in the bracket, and the reinforcing steel sheet is disposed on a side of the circuit board opposite to the chip.

9. The integrated structure of the LCD panel lower fingerprint module and the LCD module of claim 1, wherein the LCD panel lower fingerprint module is fixed on the lower end surface of the backlight module by adhesive bonding.

10. The integrated structure of the LCD panel lower fingerprint module and the LCD module of claim 1, wherein the LCD module further comprises a ZIF connector female socket, the ZIF connector female socket is fixedly disposed on the circuit board assembly, and the LCD panel lower fingerprint module is electrically connected with the ZIF connector female socket of the LCD module through the circuit board assembly.