CN210691347U - Fingerprint device and electronic equipment with same - Google Patents

Abstract

The utility model discloses a fingerprint device, include: a display; the fingerprint module is arranged on one side of the display and comprises a lens, an optical layer and a photoelectric sensing part which are sequentially arranged in the direction away from the display; the IR film is arranged on one side surface of the display, which is adjacent to the fingerprint module. According to the utility model discloses a fingerprint device is through establishing the IR membrane in the neighbouring of display a side surface of fingerprint module has reduced stromatolite quantity in the fingerprint module effectively, simplifies the process flow of fingerprint module, promotes the yield of fingerprint module, the cost is reduced.

Description

Fingerprint device and electronic equipment with same

Technical Field

The utility model belongs to the technical field of the electronic equipment technique and specifically relates to a fingerprint device and electronic equipment who has it is related to.

Background

With the rapid development of science and technology, electronic devices such as mobile phones and tablet computers occupy a larger and larger area in the life of people. In the correlation technique, electronic equipment manufacturer generally adopts "fingerprint under the screen" scheme when producing the fingerprint module. Particularly, set up the fingerprint module in the below of display screen to constitute optics fingerprint device, the user can directly realize fingerprint identification through the display screen. However, the fingerprint module includes many stacked layers in the manufacturing process, the process is complex, the yield of the fingerprint module is low, and the price is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a fingerprint device has reduced the quantity of fingerprint module stromatolite in manufacturing process effectively, simplifies the process flow of fingerprint module, promotes the yield of fingerprint module, the cost is reduced.

Another object of the present invention is to provide an electronic device having the above fingerprint device.

According to the utility model discloses fingerprint device of first aspect embodiment includes: a display; the fingerprint module is arranged on one side of the display and comprises a lens, an optical layer and a photoelectric sensing part which are sequentially arranged along the direction far away from the display; the IR film is arranged on one side surface of the display, which is adjacent to the fingerprint module.

According to the utility model discloses fingerprint device through establishing the IR membrane on the lower surface of display, has reduced stromatolite quantity in the fingerprint module effectively, has simplified the process flow of fingerprint module, promotes the yield of fingerprint module, the cost is reduced.

According to some embodiments of the invention, the IR film is coated on the side of the display adjacent to the fingerprint module. The adoption of the plating mode can effectively ensure the purity of the IR film, strengthen the binding force and the adhesive force between the IR film and the display, and ensure that the IR film can be effectively fixed on the display, thereby ensuring the reliability of fingerprint identification.

According to some embodiments of the invention, the IR film is evaporated or sputtered on the side of the display adjacent to the fingerprint module. The method adopts the evaporation mode, improves the purity of the IR film, is easy to detect and control the thickness and components of the IR film on line, has the highest thickness control precision reaching the monomolecular level, discharges few and basically no pollutants in the evaporation process, has no three wastes pollution, and is environment-friendly. The sputtering mode has high deposition rate and low substrate temperature, can obviously improve the controllability, repeatability and uniformity of the thickness of the IR film, can improve the bonding force and adhesive force between the IR film and the display by adopting sputtering, simultaneously can lead high-energy electrons to do spiral motion due to orthogonal electromagnetic field in sputtering and be limited near a cathode, and lead a glow discharge area to be limited in a near area near a marking target, thereby avoiding the generation of ineffective ions, greatly reducing the damage of the electrons to the surface of the substrate caused by direct bombardment, increasing the ionization rate, greatly reducing the working air pressure, and further improving the success rate of the IR film plating on the display.

According to some embodiments of the present invention, the fingerprint module is located in the orthographic projection on the display. For the display, the area of fingerprint module only needs to satisfy discernment human fingerprint, can effectively reduce the shared space of fingerprint module in electronic equipment like this, has improved electronic equipment's space utilization.

According to some embodiments of the invention, the orthographic projection of the IR film on the display is located within the display. For the display, the area of the IR film only needs to meet the requirement of light which needs to be transmitted by human fingerprints, so that the occupied space of the IR film in the electronic equipment can be effectively reduced, and the space utilization rate of the electronic equipment is improved.

According to some embodiments of the present invention, the IR film has an orthographic projection area on the display equal to an orthographic projection area of the fingerprint module on the display. The IR film functions to cut off infrared light and pass visible light. Set to the area through the area with the IR membrane and equal with the area of fingerprint module, can transmit the light of IR membrane effectively to the fingerprint module in, guaranteed efficient photoelectric conversion in the fingerprint module.

According to some embodiments of the invention, the display is an OLED. The OLED is adopted in the display mainly because the OLED has thinner organic plastic layer, lighter and more flexible organic plastic layer, light luminescent layer, brighter luminescence, easier manufacture, larger size and wide visual field range which can reach about 170 degrees.

According to some embodiments of the invention, the photoelectric sensing part is a silicon plate or a TFT sensor. Through setting up the photoelectric sensing part into silicon board or TFT sensor, improved the integrated level of photoelectric sensing part, and silicon board and TFTsensor's with low costs, flexible process, the processing manufacturing of the fingerprint module of being convenient for.

According to some embodiments of the invention, the lens is a microlens. The light generated by the display is effectively reflected to the finger of the user through the light condensation effect of the micro-lens.

According to the utility model discloses electronic equipment of second aspect embodiment includes according to the utility model discloses above-mentioned fingerprint device of first aspect embodiment.

According to the utility model discloses electronic equipment, through setting the utility model discloses the fingerprint device of above-mentioned first aspect embodiment. The number of the laminated layers of the fingerprint device in the manufacturing process is reduced, the process flow of the fingerprint device is simplified, the yield of the fingerprint device is improved, the cost is reduced, and therefore the cost of the electronic device is reduced.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic diagram of a fingerprint device according to an embodiment of the present invention.

Reference numerals:

100: a fingerprint device;

1: a display;

2: an IR film;

3: a fingerprint module; 31: a lens; 32: an optical layer; 33: a photoelectric sensing part;

4: soaking cotton; 5: fencing; 6: a flexible circuit board; 7: hot-pressing the conductive adhesive; 8: a reinforcing steel sheet.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

A fingerprint device 100 according to an embodiment of the present invention is described below with reference to fig. 1.

As shown in fig. 1, a fingerprint device 100 according to an embodiment of the present invention includes a display 1, a fingerprint module 3, and an IR film 2(Infrared filter).

Specifically, the fingerprint module 3 is arranged on one side of the display 1, and the fingerprint module 3 comprises a lens 31, an optical layer 32 and a photoelectric sensing part 33 which are sequentially arranged along the direction far away from the display 1. The IR film 2 is disposed on a side surface of the display 1 adjacent to the fingerprint module 3.

For example, in the example of fig. 1, the display 1 is located at the top, the upper surface of the IR film 2 is connected to the lower surface of the display 1, the fingerprint module 3 may be located right below the IR film 2 and spaced up and down from the IR film 2, and the fingerprint module 3 sequentially includes a lens 31, an optical layer 32 and a photoelectric sensing part 33 from top to bottom. So, establish on display 1's lower surface through IR membrane 2, and need not to set up IR membrane 2 in fingerprint module 3, compare with the fingerprint module that traditional has a plurality of stromatolites, because the number of piles of fingerprint module 3 reduces relatively to can simplify fingerprint module 3's process flow, promote fingerprint module 3's yield, thereby can reduce cost. The finger is placed at fingerprint device 100, and display 1 jets out light to the finger, because the difference of the optical refractive index of skin and air, skin reflectivity is little, and air reflectivity is big, and the reflection signal of skin contact department is little promptly, and the reflection signal of air contact department is big, and the light after the reflection filters infrared light through IR membrane 2, sees through visible light, and visible light utilizes foretell reflectivity difference to convert light signal into charge signal through camera lens 31, optical layer 32 and photoelectric sensing part 33, snatchs and preserves fingerprint image information.

According to the utility model discloses fingerprint device 100 through establishing IR membrane 2 on display 1's lower surface, has reduced stromatolite quantity in the fingerprint module 3 effectively, has simplified fingerprint module 3's process flow, has promoted the yield of fingerprint module, the cost is reduced.

According to some embodiments of the present invention, the IR film 2 may be plated on the lower surface of the display 1. Therefore, the purity of the IR film 2 can be effectively guaranteed by adopting the plating mode, the binding force and the adhesive force between the IR film 2 and the display 1 are enhanced, the IR film 2 can be effectively fixed on the display 1, and the reliability of fingerprint identification is guaranteed.

Alternatively, the IR film 2 is evaporated on the lower surface of the display 1. Vapor deposition is a method of obtaining a thin film material by heating the material in a vacuum environment, vaporizing the material, and depositing the vaporized material on a substrate. Therefore, the purity of the IR film 2 is improved by adopting an evaporation plating mode, the thickness and the components of the IR film 2 are easy to detect and control on line, the thickness control precision can reach the monomolecular level to the maximum, and pollutants discharged in the evaporation plating process are few and basically free, so that the method is free from three wastes pollution and environment-friendly.

Of course, the present invention is not limited thereto, and the IR film 2 may be sputtered on the lower surface of the display 1. Sputtering is a method of introducing appropriate inert gas as a medium in a vacuum environment, impacting the target material with the inert gas at an accelerated speed, impacting atoms on the surface of the target material, and forming a coating on the surface. The sputtering mode has high deposition rate and low substrate temperature, can obviously improve the controllability, repeatability and uniformity of the thickness of the IR film, can improve the binding force and adhesive force of the IR film 2 and the display 1 by adopting sputtering, simultaneously can lead high-energy electrons to do spiral motion due to orthogonal electromagnetic field in sputtering and be limited near a cathode, and lead a glow discharge area to be limited in the near-vicinity area of a marking target, thereby avoiding the generation of ineffective ions, greatly reducing the damage of electrons to the surface of the substrate caused by direct bombardment, increasing the ionization rate, greatly reducing the working air pressure, and further improving the success rate of the IR film 2 sputtered on the display 1.

According to the utility model discloses an in some optional embodiments, fingerprint module 3 orthographic projection on display 1 is located display 1, that is to say, display 1's area is greater than fingerprint module 3's area. For example, referring to fig. 1, the fingerprint module 3 is disposed under the display 1, and the width of the fingerprint module 3 is smaller than the width of the display 1. So set up, for display 1, the area of fingerprint module 3 only needs to satisfy discernment human fingerprint, can effectively reduce the shared space of fingerprint module 3 in electronic equipment like this, has improved electronic equipment's space utilization.

Optionally, the orthographic projection of the IR film 2 on the display 1 is located within the display 1, i.e. the area of the display 1 is larger than the area of the IR film 2. For example, referring to fig. 1, the IR film 2 is disposed directly below the display 1, the IR film 2 is in contact with the lower surface of the display 1, and the width of the IR film 2 is smaller than the width of the display 1. So set up, for display 1, the area of IR membrane 2 only needs to satisfy the light that the human fingerprint of discernment needs to see through, can effectively reduce the shared space of IR membrane 2 in electronic equipment like this, has improved electronic equipment's space utilization.

Further, the orthographic projection area of the IR film 2 on the display 1 can be equal to the orthographic projection area of the fingerprint module 3 on the display 1. The IR film 2 functions to cut off infrared light and pass visible light. From this, set up the area through with IR membrane 2 to equal with fingerprint module 3's area, can transmit fingerprint module 3 effectively with the light through IR membrane 2 in, guaranteed efficient photoelectric conversion in the fingerprint module 3.

The display 1 may be an OLED (Organic Light Emitting display, Organic Light Emitting semiconductor, OLED is a current type Organic Light Emitting device, and emits Light by injecting and recombining carriers, and the Light Emitting intensity is proportional to the injected current. The display 1 adopts the OLED mainly because the OLED has thinner organic plastic layer, lighter and more flexible, light emitting layer, brighter light emitting, easier manufacture, larger size and wide visual field range which can reach about 170 degrees.

Alternatively, the photo sensing part 33 is a silicon plate or a TFT sensor (Thin Fi lm Transistor sensor Thin film Transistor glass sensing part). As shown in fig. 1, the photoelectric sensing part 33 is connected with the lower surface of the optical layer 32, and the photoelectric sensing part 33 is set to be a silicon plate or a TFT sensor, so that the integration level of the photoelectric sensing part 33 is improved, and the silicon plate and the TFTsensor have low cost and flexible process, thereby facilitating the processing and manufacturing of the fingerprint module 3.

Optionally, the lens 31 is a microlens. Referring to fig. 1, a lens 31 is fixed on an optical layer 32, and light generated from the display 1 is effectively reflected to the finger of the user by the light condensing action of the micro-lenses.

Further, combine fig. 1, the below of fingerprint module 3 is equipped with Flexible circuit board (FPC for short) 6, from the top down has connected gradually the bubble cotton 4 and has enclosed fender 5 between display 1 and the Flexible circuit board 6, and bubble cotton 4 can encircle the periphery of fingerprint module 3 with enclosing fender 5, and Flexible circuit board 6's below can be connected with reinforcement steel sheet 8 through hot pressing conducting resin 7. From this, steep cotton 4 with enclose fender 5 and play the supporting role to the display, guarantee display 1's stability, construct the space of installation fingerprint module 3 simultaneously, reduce fingerprint device 3's volume. Of course, the double-faced adhesive tape and the enclosure 5 can be sequentially connected between the display 1 and the flexible circuit board 6 from top to bottom.

According to the present invention, an electronic device includes the fingerprint device 100 according to the first aspect of the present invention.

According to the utility model discloses electronic equipment through adopting foretell fingerprint device 100, has reduced fingerprint device 100 in the quantity of manufacturing in-process stromatolite, simplifies fingerprint device 100's process flow, promotes fingerprint device 100's yield, the cost is reduced to electronic device's cost has been reduced.

Alternatively, the electronic device may be any of various types of computer system devices that are mobile or portable and perform wireless communications. In particular, the electronic device may be a mobile or smart phone (e.g., an iPhone (TM) based phone), a portable gaming device (e.g., Nintendo DS (TM), Play Station portable (TM), Game-boy Advance (TM), iPhone (TM)), a laptop, a PDA, a portable internet appliance, a music player and data storage device, other handheld devices and a headset such as a watch, in-ear headphones, a pendant, a headset, etc., and other wearable devices (e.g., a Head Mounted Device (HMD) such as electronic glasses, electronic clothing, an electronic bracelet, an electronic necklace, an electronic tattoo, or a smart watch).

Alternatively, the electronic device may be any of a number of electronic devices including, but not limited to, cellular phones, smart phones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, video recorders, cameras, other media recorders, radios, medical devices, vehicle transportation equipment, calculators, programmable remote controls, pagers, laptop computers, desktop computers, printers, netbook computers, Personal Digital Assistants (PDAs), Portable Multimedia Players (PMPs), moving Picture experts group (MPEG-1 or MPEG-2) Audio layer (MP3) players, portable medical devices, and digital cameras, and combinations thereof. In some cases, the electronic device may perform a variety of functions (e.g., playing music, displaying videos, storing pictures, and receiving and sending telephone calls). If desired, the electronic device may be a portable device such as a cellular telephone, media player, other handheld device, wristwatch device, pendant device, earpiece device, or other compact portable device.

Other constructions and operations of any one or more electronic devices, such as any of various types of computer system devices that are mobile or portable and perform wireless communications, according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A fingerprint device, comprising:

a display;

the fingerprint module is arranged on one side of the display and comprises a lens, an optical layer and a photoelectric sensing part which are sequentially arranged along the direction far away from the display;

the IR film is arranged on one side surface of the display, which is adjacent to the fingerprint module.

2. The fingerprint device of claim 1, wherein the IR film is coated on the side surface of the display adjacent to the fingerprint module.

3. The fingerprint device of claim 2, wherein the IR film is evaporated or sputtered on the side surface of the display adjacent to the fingerprint module.

4. The fingerprint device of any one of claims 1-3, wherein an orthographic projection of the fingerprint module on the display is located within the display.

5. The fingerprint device of any one of claims 1-3, wherein an orthographic projection of the IR film on the display is located within the display.

6. The fingerprint device of any one of claims 1-3, wherein an area of an orthographic projection of the IR film on the display is equal to an area of an orthographic projection of the fingerprint module on the display.

7. The fingerprint device of claim 1, wherein the display is an OLED.

8. The fingerprint device of claim 1, wherein the photo-electric sensing component is a silicon plate or TFTsensor.

9. The fingerprint device of claim 1, wherein the lens is a microlens.

10. An electronic device, characterized in that it comprises a fingerprint device according to any one of claims 1-9.

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