CN210927687U

CN210927687U - Electronic equipment

Info

Publication number: CN210927687U
Application number: CN202020241425.2U
Authority: CN
Inventors: 贾玉虎
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-03-02
Filing date: 2020-03-02
Publication date: 2020-07-03
Anticipated expiration: 2030-03-02

Abstract

The application provides an electronic equipment with fingerprint identification function, this electronic equipment includes: the device comprises a middle frame, a display screen, a fingerprint identification module and a light source; the display screen and the middle frame are arranged together in a surrounding manner to form an accommodating space; wherein: the middle frame comprises a bottom part and a side part; the side part is connected with the bottom part and extends in the thickness direction of the bottom part; the side portion includes: top and bottom walls disposed in opposition, and outer and inner walls disposed in opposition; the top wall is connected with the display screen, and the bottom wall is connected with the bottom; the fingerprint identification module is arranged in the accommodating space; the light source is arranged on the inner wall; the glue overflowing groove is formed in the top wall and used for containing glue between the display screen and the top wall. Through the mode, the risk that hot melt adhesive overflows into the accommodating space to shield the light source under pressure when the display screen is attached to the top wall can be effectively reduced.

Description

Electronic equipment

Technical Field

The application relates to the technical field of electronic equipment structures, in particular to electronic equipment.

Background

In recent years, smart phones enter a full-screen era, the screen occupation of the smart phones is getting larger and larger, and the traditional capacitive fingerprint identification technology needs to be provided with independent fingerprint identification keys, so that the full-screen development of the smart phones is limited. Therefore, the technology of identifying fingerprints under the screen is produced at the same time, and becomes the mainstream technology of identifying fingerprints of various large mobile phone manufacturers.

The current technology of identifying finger print under screen is mainly applied to the self-luminous mobile phone screen such as OLED (Organic Light-Emitting Diode) and AMOLED (Active-matrix Organic Light-Emitting Diode). And the LCD (Liquid Crystal Display) screen is lighted by depending on the backlight module, can only be lighted in a full screen, and cannot form an effective fingerprint detection optical loop, so that the optical loop is formed by arranging an independent light source, and then fingerprint identification under the LCD screen is realized. However, the light source is generally arranged on the middle frame, when the middle frame is attached to the display screen, the glue is easy to overflow to shield the light source, and then the work of the fingerprint module is influenced.

Disclosure of Invention

An aspect of an embodiment of the present application provides an electronic device with a fingerprint identification function, where the electronic device includes: the device comprises a middle frame, a display screen, a fingerprint identification module and a light source; the display screen and the middle frame are arranged together in an enclosing mode to form an accommodating space; wherein: the middle frame comprises a bottom part and a side part; the side portion is connected to the bottom portion and extends in a thickness direction of the bottom portion; the side portion includes: top and bottom walls disposed in opposition, and outer and inner walls disposed in opposition; the top wall is connected with the display screen, and the bottom wall is connected with the bottom; the fingerprint identification module is arranged in the accommodating space; the light source is arranged on the inner wall, and light rays emitted by the light source are reflected to the fingerprint identification module to be used for the fingerprint identification module to acquire signals; the top wall is provided with an adhesive overflow groove used for containing the hot melt adhesive diffused when the display screen is attached to the top wall.

The electronic equipment with fingerprint identification function that this application embodiment provided sets up through the roof at center and display screen laminating and overflows gluey groove for when center and display screen use the mode of gluing to laminate, the hot melt adhesive of pressurized diffusion can the holding in overflowing gluey inslot, and can not overflow inside advancing electronic equipment. Therefore, the risk that the diffused hot melt adhesive shields the light emitting surface of the light source can be effectively reduced, and the working stability and reliability of the fingerprint identification module are improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is an exploded schematic view of an electronic device 10 according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of the structure of the electronic device 10;

FIG. 3 is a schematic diagram of the operation of the fingerprint identification module 300 of FIG. 1;

FIG. 4 is a schematic diagram of the structure of the middle frame 200 in FIG. 1;

FIG. 5 is a cross-sectional view of the electronic device 10 of FIG. 2 along line V-V;

FIG. 6 is an enlarged view of a portion of the flash 2211 and the stop 2241 of FIG. 4;

FIG. 7 is a top view of side 220 of FIG. 4;

FIG. 8 is an enlarged partial view of the glue slot 2211 and the flow restrictor 2241 of FIG. 5;

FIG. 9 is an enlarged partial view of another cross-sectional configuration of the flash 2211 and restrictor 2241;

FIG. 10 is a schematic diagram of a partial structure of the middle frame 200;

FIG. 11 is another schematic structural diagram of a portion of the middle frame 200;

fig. 12 is a schematic view of another partial structure of the middle frame 200.

Detailed Description

As used herein, an "electronic device" (or simply "terminal") includes, but is not limited to, an apparatus that is configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal). A communication terminal arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A cellular phone is an electronic device equipped with a cellular communication module.

The inventor finds that in some LCD screen lower fingerprint identification technologies, a light source is arranged on the side face inside a middle frame, the light emitted by the light source irradiates the finger of a user, and a fingerprint identification sensor collects light signals reflected by the finger, so that the LCD screen lower fingerprint identification is realized. However, in the subsequent assembling process of the mobile phone, the display screen and the middle frame are generally bonded in a dispensing manner, the hot melt adhesive can be diffused to a certain extent after being pressed by the bonding of the display screen and the middle frame, and the diffused position is uncontrollable, so that the risk that the hot melt adhesive overflows into the electronic equipment along with the middle frame exists. Furthermore, in order to compress the internal space of the mobile phone, the lamp source is often tightly attached to the side surface inside the middle frame, when the hot melt adhesive overflows into the electronic device along with the middle frame, the hot melt adhesive easily overflows to the lamp source along the side surface of the middle frame and shields the light emitting surface of the lamp source, and then the light irradiation of the lamp source is influenced, so that the fingerprint identification sensor cannot effectively collect corresponding optical signals, and finally, the fingerprint identification time under the LCD screen is increased or the identification is failed, and the normal use of the electronic device is influenced.

In order to solve the above problem, an embodiment of the present application provides an electronic device with a fingerprint identification function. The present application will be described in further detail with reference to the following drawings and examples. It is to be noted that the following examples are only illustrative of the present application, and do not limit the scope of the present application. Likewise, the following examples are only some examples and not all examples of the present application, and all other examples obtained by a person of ordinary skill in the art without any inventive work are within the scope of the present application.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1 to 3, fig. 1 is an exploded schematic view of an electronic device 10 according to an embodiment of the present disclosure, fig. 2 is a schematic view of the electronic device 10, and fig. 3 is a schematic view of an operating principle of the fingerprint identification module 300 in fig. 1.

The electronic device 10 provided in the embodiment of the present application may be an electronic device such as a mobile phone, a television, a tablet computer, and the like. The electronic device 10 of the present embodiment is described by taking a mobile phone as an example.

As shown in fig. 1 to 3, the electronic apparatus 10 includes: display screen 100, center 200, fingerprint identification module 300 and light source 400. The display screen 100 is covered on one side of the middle frame 200, and encloses with the middle frame 200 to form an accommodating space 500. The fingerprint recognition module 300 is disposed in the accommodating space 500, and the light source 400 is disposed on the middle frame 200. The light emitted from the light source 400 can be irradiated to the finger of the user and reflected to the fingerprint identification module 300 through the finger 20 of the user, thereby realizing the technology of fingerprint identification under the screen.

Referring to fig. 4 to 12, fig. 4 is a schematic structural diagram of the middle frame 200 in fig. 1, fig. 5 is a schematic structural diagram of a cross section of the electronic device 10 in fig. 2 along v-v, fig. 6 is a partially enlarged view of the glue overflow slot 2211 and the limiting member 2241 in fig. 4, fig. 7 is a top view of the side portion 220 in fig. 4, fig. 8 is a partially enlarged view of the glue overflow slot 2211 and the limiting member 2241 in fig. 5, fig. 9 is a partially enlarged view of another cross-sectional structure of the glue overflow slot 2211 and the limiting member 2241, fig. 10 is a schematic structural diagram of a part of the middle frame 200, fig. 11 is a schematic structural diagram of another part of the middle frame 200, and fig. 12 is a schematic structural diagram of another part of.

As shown in fig. 4 to fig. 6, the Display screen 100 may specifically be an LCD (Liquid Crystal Display) screen, and the Display screen 100 may include a Display module 110, a backlight module 120 and an installation shell 130. Wherein, the display module assembly 110 and the center 200 are attached together to form the accommodating space 500, and the accommodating space 500 can be used for installing the fingerprint identification module assembly 300 and also can be used for installing functional devices of the electronic device 10, such as a main board, a battery, a camera and the like. The backlight module 120 is disposed on a side of the display module 110 close to the middle frame 200, and the mounting shell 130 is disposed on a side of the backlight module 120 away from the display module 110. The mounting case 130 is used for mounting the backlight module 120, and has a certain protection capability and a heat dissipation function. For example, the mounting case 130 may be made of a metal having certain structural strength and heat conductivity, such as an iron case. The backlight module 120 can be protected and the heat conduction can be performed on the backlight module 120. Further, the installation shell 130 has a notch 1301 opened in the area corresponding to the fingerprint identification module 300, so that the fingerprint identification module 300 can acquire signals from the notch 1301, and further, the function of the fingerprint identification module 300 is applied. Such as screen unlock, fingerprint payment, etc. In addition, the size of the gap 1301 is slightly larger than or equal to the sensing area of the fingerprint identification module 300, so that the incident light is prevented from affecting other photosensitive elements in the electronic device 10 too much due to the overlarge gap 1301, or the incident light is prevented from affecting the signal acquisition of the fingerprint identification module 300 too little due to the undersize gap 1301. In some embodiments, the display screen 100 may further include a touch circuit for responding to a touch operation performed on the display module 110, which is not limited in this embodiment.

The middle frame 200 includes a bottom portion 210 and a side portion 220, and the side portion 220 is connected to the bottom portion 210, and the side portion 220 extends in a thickness direction of the bottom portion 210. Wherein the side portion 220 includes oppositely disposed top and

bottom walls

221, 222, and oppositely disposed outer and

inner walls

223, 224. The top wall 221 is connected to the display screen 100 by glue, such as hot melt glue, sealant or other glue, which is not limited herein. The bottom wall 222 is connected to the bottom 210. For example, in the present embodiment, the middle frame 200 may include four side portions 220, the four side portions 220 are disposed around the bottom portion 210, and the display screen 100 is attached to the top walls 221 of the four side portions 220 to form a closed accommodating space 500. In addition, the bottom portion 210 and the side portion 220 may be an integral structure, or two independent components may be assembled by bonding or welding, which is not limited in this embodiment.

Fingerprint identification module 300 sets up in accommodation space 500, and fingerprint identification module 300 includes: a support pad 310 and a fingerprint identification module 320. The fingerprint recognition module 320 is disposed on the bottom 210 near one side of the display module 110. The support pad 310 is disposed around the fingerprint recognition module 320, and one end of the support pad 310 is attached to the mounting case 230 and the other end is attached to the bottom 210. In this embodiment, the fingerprint recognition module 320 may be specifically an optical sensor, and is configured to collect an optical signal reflected by a finger of a user, so as to implement a fingerprint recognition function. The support pad 310 may be made of a flexible material having a certain elasticity, such as foam, and soft plastic. When the user presses the display screen 100, the supporting pad 310 may provide a certain elastic force, so as to prevent the display screen 100 from being scratched by pressure to the fingerprint identification module 320, and thus the display screen 100 and the fingerprint identification module 320 are damaged. Meanwhile, the supporting pad 310 is disposed around the fingerprint recognition module 320, and can also play a certain role in preventing water and light leakage. The light source 400 is disposed on the inner wall 224, wherein light emitted from the light source 400 can be reflected to the fingerprint identification module 320 by the finger of the user, so that the fingerprint identification module 320 can collect the optical signal with the fingerprint information of the finger of the user for identification, thereby implementing corresponding functional application. In this embodiment, the light source 400 may specifically be an infrared lamp, or may be a light source of other kinds of light, and only the light emitted by the light source 400 is reflected by the finger of the user, and then can be collected and identified by the fingerprint identification module 320, which is not limited in this embodiment.

As shown in fig. 7 to 12, further, to avoid the problem that the operation of the fingerprint identification module 320 is affected when the hot melt adhesive is spread into the accommodating space 500 to shield the light source 400 when the display screen 100 is attached to the middle frame 200. The top wall 221 is provided with an adhesive overflow groove 2211, and the adhesive overflow groove 2211 is used for accommodating hot melt adhesive diffused by pressure when the display screen 100 is attached to the top wall 221, so as to reduce the risk that the hot melt adhesive overflows into the accommodating space 500 along the top wall 221 and the inner wall 224 to shield the light source 400. Meanwhile, the inner wall 224 is further provided with a flow limiting piece 2241, and the flow limiting piece 2241 is used for blocking the hot melt adhesive when the capacity of the adhesive overflowing groove 2211 is insufficient to enable the hot melt adhesive to continue to diffuse, so that the hot melt adhesive is prevented from continuing to diffuse. Through setting up excessive gluey groove 2211 and current-limiting piece 2241 can effectually reduce the region that the hot melt adhesive pressurized was diffused, reduce the risk that hot melt adhesive influences light source 400. In addition, the glue overflow slot 2211 can be separately arranged or the flow restrictor 2241 can be separately arranged to reduce the area of the hot melt glue which is pressed and spread. In some embodiments, there may be a plurality of glue overflow slots 2211 spaced apart from the top wall 221. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise.

Specifically, the glue overflow groove 2211 and the light source 400 are arranged on the same side portion 220, the projection of the glue overflow groove 2211 on the inner wall 224 of the same side portion 220 is opposite to the projection of the light source 400 on the inner wall 224 of the same side portion 220, and the length of the projection of the glue overflow groove 2211 on the inner wall 224 is greater than or equal to the length of the projection of the light source 400 on the inner wall 224. That is, projections of the flash groove 2211 and the light source 400 in the same plane are oppositely arranged, and after translation, two sides of the projection of the light source 400 oppositely arranged in the length direction at least partially overlap with the projection of the flash groove 2211. For example, in this embodiment, the length of the projection of the glue overflow slot 2211 on the inner wall 224 may be equal to the length of the projection of the light source 400 on the inner wall 224, so that the glue overflow slot 2211 can block the hot melt glue that may diffuse to the area of the inner wall 224 where the light source 400 is located, and prevent the hot melt glue from continuously diffusing. In some embodiments, the glue overflow slot 2211 may also be formed along the top wall 221, that is, the length of the glue overflow slot 2211 is the same as the length of the top wall 221, so that the blocking area and capacity of the glue overflow slot 2211 are increased, and the glue overflow slot 2211 can block the hot melt glue diffused to the area of the inner wall 224 where the light source 400 is located, and also can block all the hot melt glue diffused by pressure on the whole top wall 221, thereby effectively reducing the risk that the hot melt glue overflows into the accommodating space 500 to block the light source 400. Further, the glue overflow slot 2211 can be opened from shallow to deep in the direction close to the inner wall 224 to form an inclined plane, so that the hot melt glue can flow into the glue overflow slot 2211 conveniently, and meanwhile, a retaining wall 2242 with a certain height can be formed by utilizing the inner wall 224 to block the diffusion of the hot melt glue. In some embodiments, the glue overflow slots 2211 can also be rectangular slots to increase the hot melt adhesive capacity of the glue overflow slots 2211. Specifically, the opening depth of the glue overflow slot 2211 can be adapted to the thickness of the glue. For example, in this embodiment, the specific depth S of the glue overflow groove 2211 may be 0.05mm to 0.2mm, so as to avoid that the excessive depth of the glue overflow groove 2211 affects the structural strength of the middle frame 200, or increase the processing difficulty of the glue overflow groove 2211.

Further, the flow restrictor 2241 is disposed on the inner wall 224, and the flow restrictor 2241 is located between the light source 400 and the glue overflow slot 2241. The flow restrictor 2241 extends toward the display screen 100 and is higher than the top wall 221. For example, the height H of the flow restrictor 2241 may be 0.05m to 0.15 mm. When the glue overflowing groove 2211 contains the hot melt adhesive, and the hot melt adhesive continues to diffuse, the flow limiting piece 2241 can block the part of the hot melt adhesive which is not blocked by the glue overflowing groove 2211, so that the blocking effect of the diffusion of the hot melt adhesive is enhanced. Further, the length of the projection of the flow restrictor 2241 on the inner wall 224 is greater than or equal to the length of the projection of the light source 400 on the inner wall 224, so as to ensure that the flow restrictor 2241 can block the area of the inner wall 224 where the light source 400 is located, and prevent the hot melt adhesive passing through the adhesive overflow slot 2211 from spreading to the light source 400 along the inner wall 224. For example, in this embodiment, the length of the flow restrictor 2241 projected on the inner wall 224 is equal to the length of the light source 400 projected on the inner wall 224, and further the length of the glue overflow slot 2211 projected on the inner wall 224 is equal to the length of the flow restrictor 2241 projected on the inner wall 224. The overflow slot 2211 and the flow-limiting piece 2241 are matched to realize the separation of the hot melt adhesive, so that the risk that the hot melt adhesive overflows into the accommodating space 500 to shield the light source 400 is further reduced. In some embodiments, the flow restrictor 2241 may also be disposed along the top wall 221. That is, the flow restrictor 2241 completely blocks all areas on the top wall 221 to increase the blocking range of the flow restrictor 2241 and reduce the risk of hot melt adhesive diffusion.

As shown in fig. 10-12, in some embodiments, both the flash 2211 and the flow restrictor 2241 may be disposed along the top wall 221. That is, the glue overflow slot 2211 and the flow-limiting piece 2241 completely separate all areas on the top wall 221, so that the double cooperation of the glue overflow slot 2211 and the flow-limiting slot 2241 is realized, and the separation effect on the diffusion of the hot melt adhesive is enhanced. In addition, only one of the overflow slot 2211 and the flow restrictor 2241 may completely block all areas on the top wall 221, the other projection on the inner wall 224 is arranged opposite to the projection of the light source 400 on the inner wall 224, and the length of the projection on the inner wall 224 is greater than or equal to the length of the projection of the light source 400 on the inner wall 224.

The electronic equipment with fingerprint identification function that this application embodiment provided sets up excessive gluey groove 2211 and sets up current-limiting piece 2241 at inner wall 224 through seting up at roof 221, and excessive gluey groove 2211, current-limiting piece 2241 and light source 400 three position relation are corresponding for when display screen 100 and center 200 are laminated, reduced the hot melt adhesive pressurized and spread the risk that shelters from light source 400 to accommodation space 500, improved the reliability of fingerprint identification module 320 work. Furthermore, the size of the glue overflow slot 2211 and the size of the flow restrictor 2241 are adjusted to match with each other, so that the diffusion of the hot melt adhesive after being pressed can be effectively inhibited. Meanwhile, different glue overflow grooves 2211 are arranged, and the blocking effect of the glue overflow grooves 2211 is further enhanced.

The terms "first", "second" and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. All directional indications (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

The above description is only a part of the embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent devices or equivalent processes performed by the content of the present application and the attached drawings, or directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. An electronic device, characterized in that the electronic device comprises: the device comprises a middle frame, a display screen, a fingerprint identification module and a light source;

the display screen and the middle frame are arranged together in an enclosing mode to form an accommodating space; wherein:

the middle frame comprises a bottom part and a side part; the side portion is connected to the bottom portion and extends in a thickness direction of the bottom portion;

the side portion includes: top and bottom walls disposed in opposition, and outer and inner walls disposed in opposition; the top wall is connected with the display screen, and the bottom wall is connected with the bottom;

the fingerprint identification module is arranged in the accommodating space;

the light source is arranged on the inner wall;

the top wall is provided with a glue overflow groove used for accommodating glue between the display screen and the top wall.

2. The electronic device of claim 1, wherein the glue overflow slot and the light source are disposed on a same side portion, a projection of the glue overflow slot on an inner wall of the side portion is disposed opposite to a projection of the light source on the inner wall of the side portion, and a length of the projection of the glue overflow slot on the inner wall is greater than or equal to a length of the projection of the light source on the inner wall.

3. The electronic device of claim 1, further comprising a current limiter;

the flow limiting piece is arranged on the inner wall and is positioned between the light source and the glue overflowing groove; wherein:

the current limiting piece extends towards the display screen direction and is higher than the top wall.

4. The electronic device of claim 3, wherein the flow restrictor is 0.05-0.15 mm above the top wall.

5. The electronic device of claim 3, wherein a length of a projection of the current limiter on the inner wall is greater than or equal to a length of a projection of the light source on the inner wall.

6. The electronic device of claim 1, wherein the glue overflow slot is a rectangular slot to increase the capacity of the glue overflow slot.

7. The electronic device of claim 1, wherein the glue overflow groove is sloped from shallow to deep in a direction approaching the inner wall, so that the inner wall forms a retaining wall to block the diffusion of the hot melt glue.

8. The electronic device of claim 6 or 7, wherein the depth of the glue overflow groove is 0.05mm to 0.2 mm.

9. The electronic device of claim 1, wherein the display screen comprises: the backlight module comprises a display module, a backlight module and an installation shell;

the display module is attached to the top wall;

the backlight module is arranged on one surface of the display module close to the bottom;

the mounting shell is arranged on one surface of the backlight module, which is far away from the display module;

the installation shell with the breach has been seted up in the corresponding region of fingerprint identification module, the fingerprint identification module can be followed signal acquisition is carried out in breach department.

10. The electronic device of claim 9, wherein the fingerprint identification module comprises: the supporting pad and the fingerprint identification module;

fingerprint identification module set up in the bottom is close to display module assembly one side, the supporting pad centers on fingerprint identification module sets up, wherein:

the two opposite sides of the supporting pad are respectively connected with the mounting shell and the bottom.