WO2021007836A1

WO2021007836A1 - Electronic device

Info

Publication number: WO2021007836A1
Application number: PCT/CN2019/096492
Authority: WO
Inventors: 陈松亚
Original assignee: 深圳市柔宇科技有限公司
Priority date: 2019-07-18
Filing date: 2019-07-18
Publication date: 2021-01-21
Also published as: CN113383290A

Abstract

An electronic device (100), comprising a shell (20) and a flexible display device (30) provided on the shell (20). The flexible display device (30) comprises a flexible screen (31) and a fingerprint identification module (35) provided in the shell (20). The shell (20) comprises a flat front surface facing the flexible screen (31). The back surface of the flexible screen (31) is attached to the front surface of the shell (20). A first light-transmitting region (260) is formed on the front surface of the shell (20). The fingerprint identification module (35) is provided corresponding to the first light-transmitting region (260). A sensing signal of the fingerprint identification module (35) can pass through the first light-transmitting region (260) of the shell (20) and the flexible screen (31).

Description

Electronic device

Technical field

This application relates to the field of display devices of electronic equipment, and in particular to an electronic device.

Background technique

In current flexible screen electronic devices, such as folding flexible mobile phones, in order to increase the screen-to-body ratio of the electronic device, the fingerprint recognition module and the flexible screen are usually superimposed, that is, the fingerprint weaving module is attached to the back of the flexible screen. To increase the screen-to-body ratio. However, the fingerprint recognition module on the back of the flexible screen is a hard structure. After it is directly attached to the back of the flexible screen, the connection between the flexible screen and the fingerprint recognition module is at the edge of the fingerprint recognition module, which causes stress concentration problems. And the flatness of the flexible module is greatly affected by the fingerprint recognition module. When pressing on the front of the flexible screen, stress marks and light and shadow are prone to appear on the front of the flexible screen, and there are damage to the flexible screen and pressing fatigue to shorten the flexibility. The risk of screen life.

Summary of the invention

The present application provides an electronic device with better fit and flatness to prevent the appearance of stress marks and light shadows.

An electronic device provided by the present application includes a housing and a flexible display device arranged on the housing. The flexible display device includes a flexible screen and a fingerprint recognition module arranged in the housing. The housing includes a surface Facing the flat front of the flexible screen, the back of the flexible screen is attached to the front of the housing, the front of the housing is provided with a first light-transmitting area, and the fingerprint recognition module corresponds to the first A light-transmitting area is provided, and the sensing signal of the fingerprint recognition module can pass through the first light-transmitting area and the flexible screen of the housing.

The electronic device of the present application includes a housing and a flexible display device. The flexible display device includes a flexible screen attached to the housing and a fingerprint recognition module arranged in the housing. The back of the flexible screen is flatly attached On the front side of the housing, a first light-transmitting area is provided on the front side of the housing, the fingerprint recognition module is provided corresponding to the first light-transmitting area, and the sensing signal of the fingerprint recognition module can pass through The first light-transmitting area of the casing and the flexible screen. Since the fingerprint recognition module is not directly attached to the back of the flexible screen, but is arranged on the housing, the edge of the flexible screen corresponding to the fingerprint recognition module will not have stress concentration problems. When the front surface of the flexible screen is pressed at the position corresponding to the fingerprint identification module, the position of the flexible screen corresponding to the fingerprint identification module will not show stress marks.

Description of the drawings

In order to explain the technical solutions in the embodiments of the present invention more clearly, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings.

FIG. 1 is a schematic diagram of the three-dimensional structure of the electronic device in the first embodiment of the present application.

Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1.

Fig. 3 is an enlarged view of part III in Fig. 2.

4 to 6 are schematic diagrams of different installation stages of the fingerprint identification module of the electronic device in the first embodiment of the present application.

FIG. 7 is a schematic diagram of the use state of the electronic device in the first embodiment of the present application.

FIG. 8 is a schematic sectional view of the electronic device in the second embodiment of the present application.

9 is a schematic cross-sectional structure diagram of an electronic device in a third embodiment of the present application.

10 is a schematic cross-sectional view of the electronic device in the fourth embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for convenience Describe the present invention and simplify the description, instead of implying or indicating that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

Please refer to FIGS. 1 to 3 together. FIG. 1 is a schematic diagram of the three-dimensional structure of the electronic device in the first embodiment of the present application; FIG. 2 is a cross-sectional view along the line II-II in FIG. 1; FIG. 3 is part III in FIG. 2 Zoomed in. The electronic device 100 in the first embodiment of the present application includes a housing 20 and a flexible display device 30 disposed on the housing 20. The housing 20 includes a first frame 21, a second frame 23 and a bending mechanism 25 connected between the first frame 21 and the second frame 23. The flexible display device 30 includes a flexible screen 31 attached to the first frame 21, the second frame 23, and the bending mechanism 25, and a fingerprint recognition module 35 disposed on the housing 20. The flexible screen 31 is provided with a bendable area 301 corresponding to the bending mechanism 25 and two non-bending areas 304 disposed on opposite sides of the bendable area 301. The two non-bending areas 304 are attached to the first The front of a frame 21 and a second frame 23. The fingerprint identification module 35 can be arranged on the side of the first frame 21 away from the flexible screen 31 or on the side of the second frame 23 away from the flexible screen 31. In this embodiment, the fingerprint identification module 35 is disposed on the side of the first frame 231 away from the flexible screen 31. The housing 20 includes a flat front face facing the flexible screen 31. The back of the flexible screen 31 is attached to the front of the housing 20. The front of the housing 20 is provided with a first light-transmitting area 260. The fingerprint recognition module 35 corresponds to the first A light-transmitting area 260 is provided, and the sensing signal of the fingerprint recognition module 35 can pass through the first light-transmitting area 260 and the flexible screen 31 of the housing 20. Specifically, if the fingerprint recognition module 35 is an optical fingerprint recognition module, the light transmittance of the area corresponding to the fingerprint recognition module 35 of the flexible screen 31 and the first light transmission area of the housing 20 meets the requirements of the optical fingerprint recognition module; If the fingerprint identification module 35 is a radio frequency fingerprint identification module, and the first light-transmitting area is a penetrating area, the portion of the flexible screen 31 corresponding to the penetrating area and the portion of the housing 20 corresponding to the penetrating area It is made of materials that reduce signal loss so that the signal of the radio frequency fingerprint identification module can penetrate. In this embodiment, the fingerprint identification module 35 is an optical fingerprint identification module, and light from the fingerprint identification module 35 can pass through the housing 20 and the flexible screen 31.

In this embodiment, the electronic device 100 is a mobile phone. It can be understood that in other embodiments, the electronic device 100 may be, but is not limited to, any other products with display touch function, such as a tablet computer, a display, a liquid crystal panel, an OLED panel, a TV, a smart watch, and a car display. In the present application, the front surface refers to the same surface as the light-emitting surface of the flexible screen 31, and the back surface refers to the surface opposite to the light-emitting surface of the flexible screen 31.

The fingerprint recognition module 35 of the flexible display device 30 of the electronic device 100 of the present application is arranged on the side of the first frame 21 away from the flexible screen 31 or on the side of the second frame 23 away from the flexible screen 31. The back is flatly attached to the front of the first frame 21 or the second frame 23, the front of the housing 20 is provided with a first light-transmitting area 260, the fingerprint recognition module 35 is provided corresponding to the first light-transmitting area 260, fingerprint recognition The sensing signal of the module 35 can pass through the first transparent area 260 of the housing 20 and the flexible screen 31. Therefore, the fingerprint identification module 35 is not directly attached to the back of the flexible screen 31, but is arranged in the housing 20. The flexible screen 31 corresponds to the edge of the fingerprint identification module 35 without stress concentration problems. When the position on the front side corresponding to the fingerprint identification module 35 is pressed, the position of the flexible screen 31 corresponding to the fingerprint identification module 35 will not show stress marks. In addition, the back of the flexible screen 31 is flatly attached to the front of the housing 20, thereby ensuring the parallelism between the fingerprint identification module 35 and the flexible screen 31, improving the accuracy of receiving and transmitting the sensing signals of the fingerprint identification module 35, and increasing The efficiency and accuracy of fingerprint collection improve user experience.

The first frame body 21 and the second frame body 23 are provided with a metal middle frame 26, and the flexible display device 30 is provided on the metal middle frame 26. The first frame body 21 is provided with a main board 212, a number of electronic components arranged on the main board 212, and a battery arranged in the first frame body 21. The fingerprint identification module 35 is electrically connected to the main board 212, and several of the electronic components may be heating chips such as a CPU chip, a power management chip, a charging integrated circuit chip, etc., which are arranged on the main board 212. The front 210 of the first frame 21 faces away from the main board 212, and the front 210 is attached to the back of the flexible screen 31.

As shown in FIG. 3, the flexible screen 31 is provided with a second light-transmitting area 305 corresponding to the first light-transmitting area 260, and the sensing signal of the fingerprint recognition module 35 can pass through the first light-transmitting area 260 and the second light-transmitting area 305. Specifically, the sensing signal of the fingerprint recognition module 35 can pass through the first transparent region 260 and the second transparent region 305.

The front 210 of the housing 20 has a through hole 261 corresponding to the first light-transmitting area 260. The through hole 261 is provided with a light-transmitting material layer 263. The front side of the light-transmitting material layer 263 is coplanar with the front 210 of the housing 20. The group 35 is arranged on the back of the transparent material layer 263, and the sensing signal of the fingerprint recognition module 35 can pass through the transparent material layer 263. Specifically, the front surface 210 of the first frame 21 is provided with a through hole 261, and the through hole 261 is filled with a light-transmitting material layer 263. The front surface of the light-transmitting material layer 263 is coplanar with the front surface 210 of the first frame 21. The intersection of the layer 263 and the front surface 210 of the first frame 21 forms a first transparent area 260; the back of the flexible screen 31 is attached to the front surface 210 of the housing 20, and the flexible screen 31 is provided with a second transparent area corresponding to the first transparent area 260. Transparent area 305. The areas of the layers of the flexible screen 31 corresponding to the second light-transmitting area 305 are set as light-transmitting areas, so that the sensing signal of the fingerprint identification module 35 can pass through the layers of the flexible screen 31.

In this embodiment, the projected area of the second light-transmitting area 305 is greater than or equal to the projected area of the first light-transmitting area 260, that is, the orthographic projection area of the first light-transmitting area 260 on the front surface 210 of the first frame 21 is located in the second The light-transmitting area 305 is in the orthographic projection area of the front surface 210 of the first frame 21. The through hole 261 is a stepped hole, and the stepped hole includes a small hole close to the front surface 210 and a large hole away from the front surface 210; the through hole 261 is configured as a stepped hole to make the connection between the light-transmitting material layer 263 and the first frame 21 stronger .

There is no gap between the light-transmitting material layer 263 and the housing 20. Specifically, there is no gap between the first frame body 21 and the light-transmitting material layer 263. Therefore, when the flexible screen 31 is attached to the front 210 of the first frame 21, the parallelism between the flexible screen 31 and the front 210 of the first frame 21 is high, which can prevent the flexible screen 31 from corresponding to the position of the transparent material layer 263 Light and shadow of stress marks appear.

In this embodiment, the light-transmitting material layer 263 and the housing 20 are integrally formed, that is, the light-transmitting material layer 263 and the first frame 21 are formed by in-mold molding or two-color injection molding. The light-transmitting material layer 263 can be made of, but not limited to, other optical resin materials such as highly transparent PC plastic, plastic material, or rubber. The front surface of the transparent material layer 263 is surface-treated so that the front surface of the transparent material layer 263 and the front surface 210 of the housing 20 have no gap. Specifically, the light-transmitting material layer 263 and the housing 20 reach the front surface 210 of the first frame body 21 and the front surface of the light-transmitting material layer 263 by precision mold forming control or secondary processing, such as partial polishing, to be coplanar, so that the The front surface 210 of the first frame body 21 and the back surface of the flexible screen 31 on the front surface of the light-transmitting material layer 263 are unbroken, and the through hole 261 is supported by the light-transmitting material layer 263, which can satisfy the requirement that the flexible screen 31 fit the casing 20 After the flatness, the flexible screen 31 and the through hole 261 of the first frame 21 are filled with light-transmitting material layer 263 and the stress marks and appearance abnormalities of the through hole 261 after being laminated and rolled are reduced, and the corresponding communication of the flexible screen 31 is improved. The touch feel and anti-pressing ability of the light-transmitting material layer 263 in the hole 261.

The back of the housing 20 is provided with a mounting slot 264 communicating with the through hole 261. The fingerprint identification module 35 is accommodated in the mounting slot 264. The fingerprint identification module 35 does not occupy the internal space of the housing 20, which facilitates the access of other components inside the housing 20. Arrange the layout. In this embodiment, a mounting slot 264 is opened on the back of the first frame 21 corresponding to the through hole 261, the fingerprint recognition module 35 is completely stored in the mounting slot 264, and the signal receiving and transmitting surface 350 of the fingerprint recognition module 35 is attached to the light-transmitting surface. The back of the material layer 263.

In other embodiments, a gap may also be provided between the fingerprint identification module 35 and the back surface of the transparent material layer 263.

The opening area of the through hole 261 is smaller than the opening area of the mounting groove 264. Specifically, the orthographic projection of the through hole 261 on the front surface 210 of the housing 20 is located in the area of the orthographic projection of the mounting groove 264 on the front surface 210 of the housing 20. Since the opening area of the through hole 261 is smaller than the opening area of the mounting groove 264, the housing 20 forms a mounting platform 266 at the intersection of the through hole 261 and the mounting groove 264, and the fingerprint recognition module 35 is connected to the mounting platform 266.

In this embodiment, the fingerprint identification module 35 is attached to the back of the mounting table 266 through glue, and a transparent optical glue can also be arranged between the fingerprint identification module 35 and the back of the light-transmitting material layer 263, so that the fingerprint identification module 35 The connection with the first frame 26 is stronger.

In other embodiments, the opening area of the through hole 261 may also be equal to or larger than the opening area of the mounting groove 264, that is, the orthographic projection area of the through hole 261 on the front 210 of the housing 20 and the mounting groove 264 on the front of the housing 20 The orthographic projection area on 210 coincides, or the orthographic projection of the mounting groove 264 on the front surface 210 of the housing 20 is located in the orthographic projection area of the through hole 261 on the front surface 210 of the housing 20. The fingerprint identification module 35 and the inner peripheral wall of the installation groove 264 are connected by glue, and a transparent optical glue can be arranged between the fingerprint identification module 35 and the back surface of the light-transmitting material layer 263.

In other embodiments, the fingerprint identification module 35 can also be detachably snapped or screwed into the installation slot 264 to facilitate replacement of the fingerprint identification module 35.

Please refer to FIGS. 4 to 6 together. FIGS. 4 to 6 are schematic diagrams of the installation process of the fingerprint recognition module of the electronic device 100 in the first embodiment of the present application. First, a through hole 261 and a mounting groove 264 are opened in the housing 20. Specifically, a through hole 261 is opened on the front surface 210 of the first frame 21, and a mounting groove 264 is opened on the back of the first frame 21 corresponding to the through hole 261. The intersection of 261 and the installation groove 264 is located inside the first frame 21, and the opening area of the installation groove 264 is larger than the opening area of the through hole 261. Therefore, the first frame 21 is formed at the intersection of the installation groove 264 and the through hole 261 Mounting stand 266; the light-transmitting material is molded into the through hole 261 of the first frame 21 through a precision mold to form the light-transmitting material layer 263, the light-transmitting material layer 263 is fixed in the through hole 261 and the light-transmitting material layer The front surface of the 263 is coplanar with the front surface 210 of the first frame 21 to facilitate the stacking of the flexible screen 31; preferably, the back surface of the light-transmitting material layer 263 and the back surface of the mounting table 266 are coplanar. The fingerprint identification module 35 is installed in the installation slot 264. Specifically, the fingerprint identification module 35 is attached to the back of the mounting table 266 through transparent optical glue, so that the fingerprint identification module 35 is fixedly received in the installation slot 264. The signal transceiving surface 350 of the pattern recognition module 35 is attached to the back of the light-transmitting material layer 263; then the main board 212, battery and back plate are installed on the back of the first frame 21, and the fingerprint recognition module 35 is electrically connected to the main board 212 Specifically, the fingerprint recognition module 35 is connected to the main board 212 through a wire; the back of the flexible screen 31 is attached to the front surface 210 of the first frame 21 through a transparent optical adhesive layer.

In other embodiments, the fingerprint identification module 35 can be directly welded to the main board 212, and the fingerprint identification module 35 can be inserted into the installation slot 264 during installation.

As shown in FIG. 3, the flexible screen 31 includes a screen body 310, a first heat dissipation layer 311 laminated on the front surface of the screen body 310, and a cover plate 319 laminated on the front surface of the first heat dissipation layer 311. The first heat dissipation layer 311 is made of a coating material with high infrared emissivity. The infrared emissivity of the first heat dissipation layer 311 is greater than or equal to 0.95. At least the area of the first heat dissipation layer 311 corresponding to the through hole 261 is set as a light-transmitting area. In this embodiment, the cover plate 319 is a thin sheet that can transmit light and infrared rays, is flexible and bendable. Specifically, the cover plate 319 is ultra-thin glass, and the thickness of the ultra-thin glass cover sheet is on the order of microns. The thickness of the thin glass cover plate 319 ranges from 5 microns to 80 microns.

The ultra-thin glass cover sheet has the advantages of better bending resistance, high strength, high hardness, etc. When the ultra-thin glass cover sheet is attached to the front of the flexible screen 31, the ultra-thin glass cover sheet can not only follow the The flexible screen 31 is bent or flattened, and can effectively resist scratches on the ultra-thin glass cover sheet by external objects, and is not easy to wear. Secondly, the elastic modulus of the ultra-thin glass cover sheet is low. It can be directly pasted on the front of the flexible screen 31. When the electronic device 100 is bent, the flexible screen 31 can be stretched simultaneously or approximately simultaneously, thereby avoiding the flexible screen 31. When bending, due to the large difference in the stretching range, damage occurs. On the other hand, the ultra-thin glass cover sheet has a high light transmittance, which facilitates the emission of light from the flexible screen 31 and the normal operation of the fingerprint recognition module 35, and after long-term use, the ultra-thin glass cover sheet There will be no problems such as discoloration.

In the present application, a first heat dissipation layer 311 is provided on the front surface of the screen 310 with higher heat generation. Since the first heat dissipation layer 311 is made of a coating material with high infrared emissivity, it is provided on the front surface of the screen 310 The first heat dissipation layer 311 made of a coating material with high infrared emissivity improves the heat dissipation efficiency of the surface of the screen 310.

The first heat dissipation layer 311 may be a transparent graphene coating or a transparent graphene film layer. In this embodiment, the first heat dissipation layer 311 is a transparent graphene coating applied on the back of the cover 319, and the graphene coating covers the entire back of the cover 319 to form a uniform graphene coating . Specifically, the graphene coating is deposited on the back surface of the cover plate 319 by vacuum deposition or evaporation. Since the graphene coating is a coating with high infrared emissivity and the surface structure of the graphene coating is a crystalline structure, the graphene coating has a high efficiency in converting heat into infrared rays. When the electronic device 100 is working, the heat generated by the screen body 310 can be converted into infrared rays through the first heat dissipation layer 311, and then evenly radiated to the outside through the cover plate 319.

The first heat dissipation layer 311 is glued to the front surface of the screen body 310. Specifically, the cover plate 319 is attached to the front surface of the screen body 310 through a transparent optical adhesive layer 312. The optical adhesive layer 312 can transmit light and infrared rays and has strong thermal conductivity. The heat generated by the screen body 310 is conducted to the first heat dissipation layer 31 through the optical adhesive layer 312, and the first heat dissipation layer 311 converts the heat into infrared rays, which is evenly radiated to the outside through the cover plate 319.

In other embodiments, the first heat dissipation layer 311 may be a transparent graphene film layer, the graphene film layer is laminated between the screen 310 and the cover 319, and the graphene film layer covers the entire screen. The front of 310.

In other embodiments, the first heat dissipation layer 311 may also be a transparent graphene coating coated on the front surface of the screen body 310.

In other embodiments, the first heat dissipation layer 311 may be a transparent carbon nanotube coating, that is, the first heat dissipation layer 311 is a transparent carbon nanotube coating coated on the back of the cover plate 319. The coating covers the entire back of the cover plate 319 to form a uniform carbon nanotube coating. Since the carbon nanotube coating is a coating with high thermal conductivity, the carbon nanotube coating has a high efficiency in converting heat into infrared rays, and can convert the heat generated by the screen 310 into infrared rays through the cover 319 Injection to improve the heat dissipation efficiency of the screen 310.

In other embodiments, both the front and back of the cover plate 319 are coated with a transparent first heat dissipation layer 311.

In other embodiments, the cover plate 319 may also be a flexible transparent cover plate, such as a transparent PET film layer, a PI film layer, etc.

As shown in FIG. 3, the screen 310 includes a light-emitting device layer 313, a polarizer layer 314 laminated on the front side of the light-emitting device layer 313, and a touch panel attached to the front side of the polarizer layer 314 through a transparent optical adhesive layer 312. The module layer 315, the support film layer 316 attached to the back of the light emitting device layer 313 through the transparent optical adhesive layer 312, and the support film 316 attached to the back of the support film 316 through the ultra-thin transparent double-sided adhesive layer 317 The second heat dissipation layer 318. The light emitting device layer 313, the polarizer layer 314, the touch module layer 315, the supporting film layer 316, and the second heat dissipation layer 318 are set as transparent areas at least corresponding to the first light transmission area 260, and the transparent areas of each layer form the The second light-transmitting area 305.

In this embodiment, the cover plate 319 is attached to the front surface of the touch module layer 315 through a transparent optical adhesive layer 312; the polarizer layer 314, the optical adhesive layer 312, and the touch module layer 315 are all transparent and can be penetrated by infrared rays. However, the area of the light emitting device layer 313, the supporting film layer 316, and the double-sided adhesive layer 317 corresponding to the first light-transmitting area 260 is transparent and each layer can be transmitted by infrared rays. The supporting film layer 316 may be made of materials such as PET or PI.

The material of the second heat dissipation layer 318 and the material of the first heat dissipation layer 311 may be the same or different. At least the regions of the second heat dissipation layer 318 and the first heat dissipation layer 311 corresponding to the first light-transmitting region 260 are transparent. The first heat dissipation layer 311, the cover plate 319, the light emitting device layer 313, the polarizer layer 314, the touch module layer 315, the support film layer 316, the double-sided adhesive layer 317, the second heat dissipation layer 318, and each optical adhesive layer 312 correspond to The absorption area of the first light transmission area 260 forms the second light transmission area 305.

In this embodiment, the material of the second heat dissipation layer 318 is the same as the material of the first heat dissipation layer 311, that is, the second heat dissipation layer 318 is also made of a transparent coating material with high infrared emissivity. The infrared emissivity of the coating is greater than or equal to 0.95. Specifically, the second heat dissipation layer 318 may be a transparent graphene coating or a transparent graphene film layer. The second heat dissipation layer 318 is used to convert the heat conducted from the screen 310 into infrared rays, which are emitted directly or through the housing 20.

The back of the screen 310 passes through the transparent optical adhesive layer 312. The front of the housing 20, that is, the back of the screen 310 is laminated on the front 210 of the first frame 21 through the transparent optical adhesive layer 312.

As shown in FIG. 2, a protective sheet 252 is also provided between the bending mechanism 25 and the flexible screen 31. The protective sheet 252 is arranged on the front surface of the bending mechanism 25. Specifically, the protective sheet 252 is fixed to the front surface of the bending mechanism 25 by welding, clamping or gluing. The protective sheet 252 is used to protect the flexible screen 31 and prevent the back of the flexible screen 31 from being damaged. The protective sheet 252 is a flexible support sheet, and the protective sheet 252 may be a thin metal sheet such as copper foil, liquid metal sheet, memory alloy sheet, plastic sheet or other sheets made of suitable materials. In this embodiment, the protective sheet 252 is a liquid metal sheet.

When the flexible screen 31 is working, the heat generated by the light-emitting device layer 313 is conducted to the first heat dissipation layer 311 through the polarizer layer 314, the optical adhesive layer 312, and the touch module layer 315. The first heat dissipation layer 311 converts the heat into infrared rays. Radiation heat dissipation through the cover plate 319 improves the heat dissipation efficiency of the flexible screen 31. At the same time, the second heat dissipation layer 318 transfers the heat of the flexible screen 31 to the metal middle frame 26 and radiates it through the metal middle frame 26. The heat generated by the electronic components inside the casing 20 is conducted to the metal middle frame 26, and the metal middle frame 26 radiates the heat to the outside.

Referring to FIG. 7, when the fingerprint recognition module 35 of the electronic device 100 is used, the fingerprint recognition module 35 sends a sensing signal to the user's finger through the signal transmitting and receiving surface 350, and the sensing signal passes through the first light-transmitting material layer 263 The area 260 and the second light-transmitting area 305 of the flexible screen 31 reach the user's finger, the sensing signal is reflected by the user's finger, and then the sensing signal is fed back to the signal transceiving surface 350, and the signal transceiving surface 350 receives the fingerprint signal reflected from the user fingerprint, and The user's fingerprint information can be detected by comparing with the sent induction signal. In one embodiment, the fingerprint recognition module 35 is an optical fingerprint recognition module, and both the first light-transmitting area 260 and the second light-transmitting area 305 can transmit light. Therefore, the sensing signal of the fingerprint recognition module 35 can pass through The light-transmitting material layer 263 and the flexible screen 31 ensure that the signal receiving and receiving surface 350 can effectively receive the sensing signal after sending the sensing signal.

In other embodiments, the fingerprint identification module 35 may also be a radio frequency fingerprint identification module, at least the light-transmitting material layer 263 located in the range of the first light-transmitting area 260 and the flexible material layer 263 located in the range of the second light-transmitting area 305 The overall signal penetration rate of the screen 31 meets the requirements of the radio frequency fingerprint identification module. Preferably, the flexible screen 31 and the transparent material layer 263 corresponding to the second transparent region 305 and the first transparent region 260 are made of materials that reduce signal loss.

Please refer to FIG. 8. FIG. 8 is a schematic cross-sectional structure diagram of the electronic device in the second embodiment of the present application. The structure of the second embodiment of the electronic device of the present application is similar to the structure of the first embodiment, except that: The housing 20 is provided with at least one positioning ring 265 on the inner peripheral wall of the through hole 261, and the positioning ring 265 is used for positioning the light-transmitting material layer 263.

In this embodiment, the first frame 21 is provided with at least one positioning ring 265 protruding in the circumferential direction in the middle of the inner peripheral wall of the through hole 261, the light-transmitting material layer 263 is integrally formed and fixed with the first frame 21, and the positioning ring 265 allows the transparent The optical material layer 263 is firmly fixed to the first frame body 21.

In other embodiments, the inner peripheral wall of the through hole 261 of the first frame body 21 is provided with two or more positioning rings 265 spaced apart from each other along the circumferential direction.

In other embodiments, the inner peripheral wall of the through hole 261 of the first frame body 21 is roughened or provided with anti-slip patterns, so that the light-transmitting material layer 263 and the first frame body 21 are fixed more firmly.

Please refer to FIG. 9. FIG. 9 is a schematic cross-sectional structure diagram of the electronic device in the third embodiment of the present application. The structure of the third embodiment of the electronic device of the present application is similar to the structure of the first embodiment, except that: The housing 20 defines at least one positioning groove 267 on the inner peripheral wall of the through hole 261, and the light-transmitting material is filled into the positioning groove 267 to position the light-transmitting material layer 263.

In this embodiment, the first frame 21 defines at least one positioning groove 267 in the middle of the inner peripheral wall of the through hole 261 along the circumferential direction. When the light-transmitting material layer 263 is integrally formed and fixed with the first frame 21, the light-transmitting material is filled to In the positioning groove 267, the light-transmitting material layer 263 and the first frame 21 are firmly fixed.

Please refer to FIG. 10. FIG. 10 is a schematic cross-sectional structure diagram of the electronic device in the fourth embodiment of the present application. The structure of the fourth embodiment of the electronic device of the present application is similar to the structure of the first embodiment, except that: A plurality of elastic positioning members 268 are provided on the inner peripheral wall of the installation groove 264, and the plurality of positioning members 268 are used for positioning the fingerprint identification module 35 in the installation groove 264.

In this embodiment, a plurality of the positioning members 268 are arranged on the inner circumferential wall of the installation groove 264 along the circumferential direction of the installation groove 264. Specifically, the positioning member 268 is an elastic locking column, and a plurality of the locking columns are evenly arranged on the inner peripheral wall of the installation groove 264 in the circumferential direction. A positioning bar 352 is provided on the outer peripheral wall of the fingerprint identification module 35 along the circumferential direction. When installing the fingerprint recognition module 35, insert the side of the fingerprint recognition module 35 with the signal transmitting and receiving surface 350 into the installation slot 264, and push the positioning member 268 to make it elastically deformed. When the positioning member 268 crosses the positioning bar 352, The positioning member 268 is elastically reset and clamps the positioning bar 352 away from the side of the transparent material layer 263, so that the fingerprint identification module 35 is fixed in the installation slot 264. At this time, the signal transceiving surface 350 of the fingerprint identification module 35 corresponds to the first light-transmitting area 260.

When the fingerprint identification module 35 needs to be removed, the fingerprint identification module 35 is pulled to the side away from the light-transmitting material layer 263, and the positioning member 268 is elastically deformed until the positioning member 268 is out of contact with the fingerprint identification module 35. The positioning member 268 is elastically reset, and the fingerprint identification module 35 is taken out to facilitate installation or removal of the fingerprint identification module 35.

The second frame body 23 may also be provided with a circuit board, a battery or electronic components, etc., and the heat generated by the circuit board, battery or electronic components during operation may also be conducted to the metal middle frame 26, and the metal middle frame 26 shoot out the heat.

The above are the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered This is the protection scope of the present invention.

Claims

An electronic device, comprising a housing and a flexible display device arranged in the housing, wherein the flexible display device comprises a flexible screen and a fingerprint recognition module arranged in the housing, and the housing includes Facing the flat front of the flexible screen, the back of the flexible screen is attached to the front of the housing, the front of the housing is provided with a first light-transmitting area, and the fingerprint recognition module corresponds to the The first light-transmitting area is provided, and the sensing signal of the fingerprint recognition module can pass through the first light-transmitting area and the flexible screen of the housing.
The electronic device of claim 1, wherein the flexible screen is provided with a second light-transmitting area corresponding to the first light-transmitting area, and the sensing signal of the fingerprint recognition module can pass through the first light-transmitting area. A transparent area and the second transparent area.
3. The electronic device of claim 2, wherein the area of the second light-transmitting area is greater than or equal to the area of the first light-transmitting area.
The electronic device according to claim 2, wherein a through hole is formed on the front surface of the housing corresponding to the first light-transmitting area, and a light-transmitting material layer is disposed in the through hole, and the light-transmitting material layer The front of the housing is coplanar with the front of the housing.
5. The electronic device of claim 4, wherein there is no gap between the light-transmitting material layer and the housing.
5. The electronic device of claim 4, wherein the light-transmitting material layer and the housing are integrally formed.
5. The electronic device of claim 4, wherein the signal transmitting and receiving surface of the fingerprint identification module is attached to the back surface of the transparent material layer.
8. The electronic device of claim 7, wherein a transparent optical glue is arranged between the fingerprint identification module and the back surface of the light-transmitting material layer.
5. The electronic device of claim 4, wherein a mounting groove communicating with the through hole is defined on the back of the housing, and the fingerprint identification module is received in the mounting groove.
9. The electronic device according to claim 9, wherein the orthographic projection of the through hole on the front surface of the housing is located in an orthographic projection area of the mounting groove on the front surface of the housing.
9. The electronic device of claim 9, wherein the housing forms a mounting platform at the intersection of the through hole and the mounting groove, and the fingerprint identification module is connected to the mounting platform.
11. The electronic device according to claim 11, wherein a plurality of elastic positioning members are provided on the inner peripheral wall of the installation groove, and the plurality of positioning members are used for positioning the fingerprint identification module in the installation groove.
The electronic device of claim 4, wherein the through hole is a stepped hole.
5. The electronic device of claim 4, wherein at least one positioning ring is provided on the inner peripheral wall of the through hole, and the positioning ring is used for positioning the light-transmitting material layer.
The electronic device of claim 4, wherein the inner peripheral wall of the through hole is provided with at least one circle of positioning grooves, and the light-transmitting material is filled into the positioning grooves to position the light-transmitting material layer .
5. The electronic device according to claim 4, wherein the front surface of the light-transmitting material layer is surface-treated so that the light-transmitting material layer and the front surface of the casing are not broken.
5. The electronic device of claim 4, wherein the inner peripheral wall of the through hole is roughened or is provided with anti-slip patterns.
9. The electronic device according to claim 9, wherein a main board is arranged in the casing, the fingerprint recognition module is disposed on the main board, and the fingerprint recognition module is inserted into the installation slot.
7. The electronic device of claim 1, wherein the housing comprises a first frame, a second frame, and a bending mechanism connected between the first frame and the second frame , The flexible display device is arranged on the first frame, the second frame, and the bending mechanism.
18. The electronic device of claim 18, wherein a motherboard is provided in the first frame, and the fingerprint identification module is electrically connected to the motherboard.