Screen components and electronic devices

Abstract

The embodiment of the present application provides a screen assembly, including: a screen body, the screen body including a curved portion, the curved portion including a glass cover plate and a first buffer layer arranged on the inner side of the glass cover plate; at least one screen sound-emitting component, the at least one screen sound-emitting component is placed on the screen body. The present application also provides an electronic device, including the screen assembly described in the above technical solution. In this embodiment, a first buffer layer is provided on the inner side of the glass cover plate of the curved portion of the screen body, that is, on the side facing the middle frame, which can mitigate the destructive effect of the large-amplitude vibration sound of the screen sound-emitting component on the screen assembly, especially the glass cover plate of the curved portion, reduce the stress on the glass cover plate of the curved portion, and extend its service life.

Description

Technical Field

[0001] The present invention relates to the field of electronic communication technology, and in particular to a screen assembly and electronic equipment. Background Art

[0002] In the related art, electronic devices such as mobile phones have increased the display ratio of screen components by applying screen sound technology. However, the screen sound device in the related art needs to cooperate with the flat area of ​​the screen to achieve installation and sound functions. When the screen component gradually develops to multi-curved screens, flexible full-screen and other screen display areas, the required amplitude and frequency range are wider, and the requirements for the screen and materials are higher. Summary of the invention

[0003] In view of this, the technical problem to be solved by the present invention is to provide a screen assembly and an electronic device. The screen assembly provided by the present invention can ensure the normal display of the screen under large amplitude conditions and extend the vibration life of the screen.

[0004] An embodiment of the present application provides a screen assembly, including: a screen body, the screen body including a curved portion, the curved portion including a glass cover plate and a first buffer layer arranged on the inner side of the glass cover plate.

[0005] In this embodiment, a first buffer layer is arranged on the inner side of the glass cover plate of the curved part of the screen body, that is, on the side facing the middle frame. This can mitigate the destructive effect of large-amplitude vibration and sound of the screen sound-generating component on the screen assembly, especially the glass cover plate of the curved part, reduce the stress borne by the glass cover plate of the curved part, and extend its service life.

[0006] In some possible implementations, the screen body includes a display module, and a second buffer layer is disposed on one side of a backlight surface of the display module.

[0007] In this embodiment, a second buffer layer is provided on one side of the backlight surface of the display module, which can mitigate the destructive effect of large-amplitude vibration and sound generation of the screen generating element on the screen assembly, thereby extending the vibration life of the screen while ensuring normal display of the screen.

[0008] In some possible implementations, the second buffer layer is disposed on the backlight side of the SCF composite film in the display module; in other possible implementations, the second buffer layer is disposed between the display panel and the SCF composite film in the display module. The second buffer layer is disposed on the backlight side of the display module and will not affect the normal display of the screen.

[0009] In some possible implementations, the first buffer layer and the second buffer layer are independently silica aerogel layers. Silica aerogel has excellent properties such as high specific surface area, high porosity, low density and low thermal conductivity. It can be used as a buffer layer to slow down the destructive effect of large amplitude vibration on the screen assembly. In some possible implementations, the silica aerogel layer includes silica aerogel and polyimide doped in the silica aerogel. Specifically, the silica aerogel is mixed with a polyimide solution, and a silica aerogel layer including polyimide and silica aerogel can be obtained after film formation by coating, casting, etc. The silica aerogel layer formed by polyimide and silica aerogel doped in the polyimide can increase the compatibility between the buffer layer and the display module, thereby improving the service life of the screen module.

[0010] In some possible implementations, the cover plate of the curved portion is an organosilane glass. In some specific implementations, the organosilane glass is a transparent flexible material made of organosilanes such as silicone and polydimethylsiloxane, or contains organosilanes such as silicone and polydimethylsiloxane and other organic substances, such as polyimide, polyurethane, polyethylene terephthalate or polyethylene naphthalate. Using organosilane glass as the material of the curved portion of the screen body can improve the ductility of the arc edge area, thereby reducing the destructive effect of vibration on the arc edge area and improving the service life of the screen.

[0011] The present application also provides an electronic device, including the screen assembly described in the above technical solution. The present application uses the screen assembly of the above technical solution to achieve screen vibration sound of a full screen or curved screen, and reduce the damage of vibration to the screen assembly, thereby increasing the service life of the screen assembly, and further increasing the service life of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of the structure of a mobile phone provided in an embodiment of the present application;

[0013] Figure 2 A schematic diagram of the structure of a screen assembly provided in an embodiment of the present application;

[0014] Figure 3 A schematic diagram of the structure of the screen body provided in the embodiment of the present application;

[0015] Figure 4 A schematic diagram of the layer structure of the screen body provided in an embodiment of the present application;

[0016] Figure 5 A schematic diagram of the structure of a first display module provided in an embodiment of the present application;

[0017] Figure 6A schematic diagram of the structure of a display panel provided in an embodiment of the present application;

[0018] Figure 7 A schematic diagram of the structure of a second display module provided in an embodiment of the present application;

[0019] Figure 8 A schematic diagram of the laminated structure of the screen body provided in the third embodiment of the present application;

[0020] Fig. 9 A schematic diagram of the laminated structure of the screen body provided in the fourth embodiment of the present application. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] As electronic devices become more functional, consumers have higher and higher requirements for the display ratio of electronic device screens, and screen sound technology has emerged. Screen sound technology uses a vibrating component to drive the screen to vibrate, and then pushes the air around the screen to produce fluctuations so that the screen makes sounds. Since there is no need to install a receiver or a speaker sound hole, a full-screen and hole-free design is achieved. However, continuous vibration will cause irreversible damage to the screen assembly, affecting its service life. Based on this, the present application reduces the damage to the screen assembly caused by vibration by setting a buffer layer, thereby extending the service life of the screen assembly and the electronic device.

[0023] In this application, the electronic device may be any device with communication and storage functions, such as a smart phone, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a tablet computer, a personal digital assistant (PAD), a laptop computer, a digital camera, an e-book reader, a portable multimedia player, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a 5G terminal device, etc., and the embodiments of this application are not limited to this. This application is described by taking a mobile phone as an example.

[0024] See also Figure 1 , Figure 1A structural schematic diagram of a mobile phone provided in an embodiment of the present application, in one possible implementation, the mobile phone 10 includes a middle frame 100, a screen assembly 200 and a battery cover 300, the middle frame 100 connects the screen assembly 200 and the battery cover 300 respectively and forms a receiving space, and the motherboard, memory, power supply and other devices of the mobile phone 10 are arranged in the receiving space.

[0025] In a possible implementation, the screen assembly 200 includes a screen body 210 and at least one screen sound generating member 220, see Figure 2 , Figure 2 A schematic diagram of the structure of the screen assembly provided for an embodiment of the present application. The screen sounding component 220 is disposed on the side of the screen body 210 facing the middle frame, and there may be multiple screen sounding components 220. In some specific implementations, the screen sounding component 220 is a piezoelectric driver. In other embodiments, the screen sounding component 220 may also be a driver of other types, and this application does not impose any special restrictions thereon. In other embodiments, the screen sounding component 220 may also be disposed on the middle frame, back panel, and other parts of the mobile phone.

[0026] In some possible implementations, the screen body 210 includes a flat portion 701 and a curved portion 702, see Figure 3 , Figure 3 A schematic diagram of the structure of the screen body provided in an embodiment of the present application. Among them, the curved portion 702 includes a cover plate 7021 and a first buffer layer 7022 arranged on the inner side of the cover plate 7021. The cover plate 7021 can be inorganic glass or a flexible material, such as organosilane glass, which has good ductility and does not affect light transmittance. In some possible implementations, the Shore hardness of the organosilane glass is 35A to 95A, preferably 58A to 95A. In some possible implementations, the hardness of the cover plate of the planar portion 701 is consistent with that of the curved portion 702, which can ensure the performance of the entire machine. In some possible implementations, the curved portion 702 and the flat portion 701 are both organosilane glass. In some possible implementations, the organosilane glass is a transparent and flexible material such as silicone, polydimethylsiloxane, etc.; in some possible implementations, the organosilane glass contains organosilane and other components, such as flexible and transparent materials such as polyimide, polyurethane, polyethylene terephthalate or polyethylene naphthalate, wherein the content of the organosilane is 30wt% to 80wt%, that is, the ratio of the organosilane content to the content of other components is 8:2 to 3:7.

[0027] In some possible implementations, the first buffer layer is a silica aerogel layer, that is, a layer formed by silica aerogel. Specifically, the silica aerogel layer is formed by film-forming substances, such as polymer compounds, including but not limited to polyimide, polydimethylsiloxane, polyurethane, etc., doped with silica aerogel particles. In some possible implementations, the doping amount of the polymer compound is 20wt% to 40wt%, preferably 25wt% to 35wt%, such as 25wt%, 27wt%, 30wt% or 33wt%. Polymer compounds such as polyimide are doped in silica aerogel, which can improve the mechanical properties of silica aerogel, make its pores more open, and the material can have better flexibility and resilience. In some possible implementations, the density of the silica aerogel layer is 0.003 to 0.29g / cm 3 , porosity is 80% to 99.8%, specific surface area is 800m 2 / g or more. In some possible implementations, the pore diameter of the silica aerogel layer is 30-50nm, preferably 35-45nm. If the pore diameter is too small and the material is too dense, the energy generated by the vibration of the screen sound-generating part cannot be transmitted to the screen body. If the pore diameter is too large and the material is too dense, the energy absorption effect will be poor, affecting the service life of the screen. In some possible implementations, the thickness of the silica aerogel layer is 240-400μm, preferably 250-350μm. The silica aerogel layer has excellent properties such as high specific surface area, high porosity, low density and low thermal conductivity. It can be used as a buffer layer to slow down the destructive effect of large-amplitude vibration on the screen assembly, especially in the curved part subjected to greater stress, which can extend its life.

[0028] The present application has no particular restriction on the source of the silica aerogel, and the silica aerogel can be prepared according to the following method:

[0029] Using tetraethyl orthosilicate (TEOS) as raw material, ethanol as solvent, and HF as catalyst, SiO2 aerogel is prepared through sol-gel and supercritical drying process. Using tetraethyl orthosilicate (TEOS) as raw material, ethanol as solvent, and HF as catalyst can effectively reduce the gelation temperature (for example, it can be reduced to room temperature) and shorten the gelation time (can be shortened to a few minutes), thereby quickly preparing SiO2 aerogel. The SiO2 aerogel prepared by the above method was subjected to BET and TEM tests. The results showed that it has a large specific surface area and a nanoporous structure, the particles are several nanometers, and the pore size is 5 to 30nm.

[0030] It can also be prepared according to the following method: using relatively cheap polysilicon (E-40) as the silicon source, using surface modification, reducing the surface tension of the liquid in the gel pores and other technologies to reduce the shrinkage of SiO2 gel during the drying process, and preparing SiO2 aerogel under normal pressure. The silica aerogel prepared by this method has a typical nanoporous structure and a large specific surface area.

[0031] In some possible implementations, the curved portion 702 may be connected to the planar portion 701 by bonding. In order to ensure bonding accuracy and not affect optical performance, the curved portion 702 may be bonded to the planar portion 701 by optical adhesive or the like.

[0032] In some possible implementations, the plane portion of the screen body 210 includes a cover plate 2110, a touch module 2120, and a display module 2130 which are arranged in sequence, see Figure 4 , Figure 4 Schematic diagram of the layer structure of the screen body provided in the embodiment of the present application. Among them, the touch module 2120 is used to realize touch screen control, the display module 2130 is used for display, and the cover plate 2110, as the outermost layer of the screen assembly 200, can protect the touch module 2120 and the display module 2130. In some possible implementations, the cover plate 2110 is inorganic glass. In other possible implementations, the cover plate 2110 is transparent organosilane glass. In some possible implementations, the cover plate 2110 is 3D glass or 2.5D glass. In some possible implementations, the touch module 2120 includes a flat layer (TB), a touch area and an organic layer arranged in sequence, and the present application has no special restrictions on it.

[0033] In some possible implementations, a structural support layer (not shown in the figure) is further provided between the cover plate 2110 and the touch module 2120. The structural support layer 2140 may be a polarizer (POL) layer, which may be connected to the cover plate 2110 and the touch module 2120 respectively through optical glue (OCA glue).

[0034] In some possible implementations, the display module 2130 includes a display panel 401, an SCF composite film 402, and a second buffer layer 403, see Figure 5 , Figure 5 The first display module provided in the embodiment of the present application is a schematic diagram of the structure. In some possible implementations, the display panel 401 is an OLED display panel, see Figure 6 , Figure 6 The OLED display panel includes a TFT substrate 501, a light-emitting functional layer 502 and an encapsulation layer (TFE layer) 503 which are stacked in sequence.

[0035] The TFT substrate 501 includes a substrate 5011 and a driving structure layer 5012 which are arranged in sequence, wherein the substrate 5011 is a flexible substrate including polyimide (PI), polyethylene terephthalate (PET) or a surface-treated polymer soft film, etc. The driving structure layer 5012 includes a plurality of driving circuits, each of which includes a plurality of transistors and at least one storage capacitor, such as 2T1C, 4T1C or 7T1C.

[0036] The light-emitting functional layer 502 includes a first electrode, a pixel definition layer, an organic functional layer and a second electrode arranged in sequence, wherein the first electrode can be made of a metal material, such as any one or more of magnesium, silver, copper, aluminum, titanium and molybdenum, or an alloy containing the above metals, such as aluminum-neodymium alloy or molybdenum-niobium alloy, etc., and can be a single-layer structure, or a multi-layer composite structure, such as Ti / Al / Ti, etc., or a stacked structure formed by a metal and a transparent conductive material, such as ITO / Ag / ITO, Mo / AlNd / ITO and other reflective materials. The pixel definition (PDL, Pixel Definition Layer) layer includes a plurality of sub-pixel definition parts, and the plurality of sub-pixel definition parts include red sub-pixels, green sub-pixels and blue sub-pixels, and are arranged in a regular pattern for display. In one embodiment, the organic functional layer includes: a hole injection layer, a hole transport layer, a light-emitting layer and an electron transport layer. In one embodiment, the second electrode is a transparent cathode. In one embodiment, the cathode can be made of any one or more of magnesium, silver, aluminum, or an alloy containing any one or more of the above metals, or a transparent conductive material such as indium tin oxide (ITO), or a multilayer composite structure of metal and transparent conductive material.

[0037] In some possible implementations, the TFE layer 503 includes a first encapsulation layer, a second encapsulation layer, and a third encapsulation layer stacked. The first encapsulation layer uses an inorganic material and covers the cathode in the display area; the second encapsulation layer uses an organic material and covers the first encapsulation layer; the third encapsulation layer uses an inorganic material and covers the first encapsulation layer and the second encapsulation layer. In other embodiments, the encapsulation layer may also use a five-layer structure of inorganic / organic / inorganic / organic / inorganic.

[0038] In some possible implementations, the SCF composite film 402 is located on the backlight side of the display panel 401 , that is, in contact with the substrate 5011 of the display panel 401 .

[0039] In some possible implementations, the second buffer layer 403 is disposed on the backlight side of the SCF composite film 402, i.e., a display panel / SCF composite film / second buffer layer structure is formed. In some possible implementations, the second buffer layer is a silica aerogel layer, i.e., a layer formed of silica aerogel, as described above, and this application will not repeat them here.

[0040] In some possible implementations, the second buffer layer 403 is compounded with the SCF composite film 402 through an adhesive, and the adhesive can be an OCA adhesive or a grid adhesive. In some specific implementations, the thickness of the adhesive layer is 50 to 100 μm, preferably 60 to 80 μm. In some specific implementations, in order to ensure the use effect of the screen, the overall thickness of the second buffer layer and the adhesive is less than 450 μm.

[0041] In some possible implementations, the display module 2130 includes a display panel 601, a buffer layer 602, and an SCF composite film 603, see Figure 7 , Figure 7 A schematic diagram of the structure of the second display module provided in an embodiment of the present application, that is, the buffer layer 602 is arranged between the display panel 601 and the SCF composite film 603 to form a display panel / buffer layer / SCF composite film structure. The buffer layer is arranged under the display panel to reduce the destructive effect of large-amplitude vibrations on the screen assembly without affecting the display. In one possible implementation, the SCF composite film 603 and the buffer layer 602 are compounded by a first adhesive layer, and the buffer layer 602 is compounded with the display panel 601 by a second adhesive layer. In some possible implementations, the first adhesive layer and the second adhesive layer are independently selected from OCA glue or grid glue.

[0042] The embodiment of the present application sets a buffer layer in the screen assembly using screen sound technology, and especially sets the buffer layer on one side of the backlight surface of the display module, which can not only reduce the destructive effect of large-amplitude vibration on the screen assembly, but also does not affect the display.

[0043] Specifically, the specific laminated structure of a screen body plane portion of the present application is shown in Figure 8 , Figure 8The schematic diagram of the laminated structure of the screen body provided in the third embodiment of the present application, the screen body includes a buffer layer 810, an SCF composite film 811, a substrate 812, a drive structure layer 813, an organic film layer 814, a TFE layer 815, a flat layer 816, a touch area 817, an organic layer 818, a first optical adhesive layer 819, a polarizer layer 820, a second optical adhesive layer 821 and a cover plate 822 arranged in sequence. Among them, the buffer layer 810 can be the silica aerogel layer described above, which is used to reduce the damage to the screen caused by vibration. The SCF composite film 811, substrate 812, driving structure layer 813, organic film layer 814 and TFE layer 815 constitute a display module 81, wherein the substrate 812, driving structure layer 813, organic film layer 814 and TFE layer 815 constitute a display panel, and the organic film layer 814 is provided with a first electrode, a pixel definition layer, an organic functional layer and a second electrode, and the organic functional layer includes a hole injection layer, a hole transport layer, a light-emitting layer and an electron transport layer, etc. The flat layer 816, the touch area 817, and the organic layer 818 constitute a touch module 82, and the first optical adhesive layer 819, the polarizer layer 820 and the second optical adhesive layer 821 constitute a support layer 83. The cover plate 822 is the outermost layer of the screen body. When the screen sounding member vibrates and makes a sound, the screen body provided in this embodiment can reduce the damage of the vibration to the screen, thereby increasing the service life of the screen.

[0044] Specifically, the specific laminated structure of a screen body of the present application is shown in Fig. 9 , Fig. 9The schematic diagram of the laminated structure of the screen body provided in the fourth embodiment of the present application, the screen body includes a buffer layer 910, an SCF composite film 911, a substrate 912, a drive structure layer 913, an organic film layer 914, a TFE layer 915, a flat layer 916, a touch area 917, an organic layer 918, a first optical adhesive layer 919, a polarizer layer 920, a second optical adhesive layer 921 and a cover plate 922 arranged in sequence. Among them, the buffer layer 910 can be the silica aerogel layer described above, which is used to reduce the damage to the screen caused by vibration. The SCF composite film 911, the substrate 912, the driving structure layer 913, the organic film layer 914 and the TFE layer 915 constitute the display module 91, wherein the substrate 912, the driving structure layer 913, the organic film layer 914 and the TFE layer 915 constitute the display panel, the organic film layer 914 is provided with a first electrode, a pixel definition layer, an organic functional layer and a second electrode, and the organic functional layer includes a hole injection layer, a hole transport layer, a light emitting layer and an electron transport layer, etc. The flat layer 916, the touch area 917, and the organic layer 918 constitute the touch module 92, and the first optical adhesive layer 919, the polarizer layer 920 and the second optical adhesive layer 921 constitute the support layer 93. The cover plate 922 is the outermost layer of the screen body, which includes a flat portion 9221 and a curved portion 9222, the curved portion 9222 is a flexible material, such as organic silane glass, etc., and a buffer layer 9223 is provided inside the curved portion 9222. In this structure, the plane portion 9221 can be inorganic glass or organosilane glass, and the present invention has no special limitations. When the plane portion 9221 is inorganic glass, the organosilane solution can be solidified and molded with the inorganic glass by adding the molded inorganic glass and organosilane solution into the mold. When the plane portion 9221 is organosilane glass, it can be prepared in an integrated molding manner. When the screen sound-emitting part vibrates and makes a sound, the screen body provided in this embodiment can reduce the damage to the screen caused by vibration, thereby increasing the service life of the screen. Moreover, in this embodiment, organosilane glass is used as the curved part of the screen, and a buffer layer is arranged on the inner side of the curved part. On the one hand, the ductility of the arc edge is improved, and on the other hand, the buffering of the curved cover plate is increased, thereby further increasing the service life of the screen.

[0045] The above embodiments are only used to help understand the method and core idea of ​​the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A screen assembly, characterized in that: include: A screen body, wherein the screen body comprises a curved portion, wherein the curved portion comprises a glass cover plate and a first buffer layer arranged inside the glass cover plate; The first buffer layer is a silicon dioxide aerogel layer; The silica aerogel layer comprises silica aerogel and polyimide doped in the silica aerogel; The doping amount of the polyimide is 20wt% to 40wt%; The density of the silica aerogel layer is 0.003-0.29 g / cm 3 , porosity is 80% to 99.8%, specific surface area is 800m 2 / g or more; The pore diameter of the silica aerogel layer is 30-50 nm.

2. The screen assembly according to claim 1, characterized in that: The glass cover plate of the curved portion is organic silane glass.

3. The screen assembly according to claim 1 or 2, characterized in that: The screen body comprises a display module, and a second buffer layer is arranged on one side of the backlight surface of the display module.

4. The screen assembly according to claim 3, characterized in that: The display module includes a display panel and an SCF composite film located on one side of the backlight surface of the display panel; A buffer layer is arranged on one side of the backlight surface of the SCF composite film.

5. The screen assembly according to claim 4, characterized in that: The invention also includes an adhesive layer disposed between the SCF composite membrane and the buffer layer.

6. The screen assembly according to claim 3, characterized in that: The display module includes a display panel and an SCF composite film located on one side of the backlight surface of the display panel; A buffer layer is arranged between the SCF composite film and the display panel.

7. The screen assembly according to claim 6, characterized in that: The invention also includes a first adhesive layer disposed between the SCF composite film and the buffer layer and a second adhesive layer disposed between the buffer layer and the display panel.

8. The screen assembly according to claim 5 or 7, characterized in that: The adhesive layer, the first adhesive layer and the second adhesive layer are independently selected from grid glue.

9. The screen assembly according to claim 3, characterized in that: The second buffer layer is a silicon dioxide aerogel layer.

10. The screen assembly according to claim 9, characterized in that: The silica aerogel layer includes silica aerogel and polyimide doped in the silica aerogel.

11. The screen assembly according to claim 10, characterized in that: The doping amount of the polyimide is 20wt% to 40wt%; The density of the silica aerogel layer is 0.003-0.29 g / cm 3 , porosity is 80% to 99.8%, specific surface area is 800m 2 / g or more; The pore diameter of the silica aerogel layer is 30-50 nm.

12. The screen assembly according to claim 11, characterized in that: The thickness of the silica aerogel layer is 240-400 μm.

13. An electronic device comprising the screen assembly according to any one of claims 1 to 12.

Images