CN213815334U - Flexible display screen and electronic equipment - Google Patents

Abstract

The application provides a flexible display screen, which comprises a substrate film layer, a display film layer and a protective film layer which are sequentially stacked; the flexible display screen is provided with a light hole, and the light hole penetrates through the substrate film layer and the display film layer; one side of the protective film layer in the light-transmitting hole is provided with a transparent supporting layer. Through the mode, the structural strength and the shock resistance of the protective film layer at the light-transmitting hole can be improved.

Description

Flexible display screen and electronic equipment

Technical Field

The application relates to the technical field of electronic equipment, in particular to a flexible display screen and electronic equipment.

Background

With the continuous development of the flexible screen, more and more mobile phone manufacturers begin to adopt the flexible screen as the screen of the mobile phone, and the folding of the mobile phone screen is realized through the flexible screen, so that the mobile phone has the function of a tablet personal computer. At present, the front camera becomes the standard configuration of most common mobile phones. Most mobile phones generally use a screen hole digging mode to realize the light sensing of the front camera. However, due to the particularity of the folding screen mobile phone, the flexible screen of the folding screen mobile phone has to meet high flexibility, so that when holes are dug in the flexible screen to realize the light sensing of the front camera, the structural strength of the flexible screen in the hole opening area is lowered, and the flexible screen is easy to deform.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a flexible display screen on one hand, and the flexible display screen comprises a substrate film layer, a display film layer and a protection film layer which are sequentially stacked; the flexible display screen is provided with a light hole, and the light hole penetrates through the substrate film layer and the display film layer; and a transparent supporting layer is arranged on one side of the protective film layer in the light-transmitting hole so as to improve the structural strength of the protective film layer at the light-transmitting hole.

Another aspect of the embodiments of the present application provides an electronic device, including: the camera module comprises a shell, a camera module and the display screen; the display screen is connected with the shell, and the display screen and the shell are arranged together to form an accommodating space; the camera module is arranged in the accommodating space, part of the area of the camera module is accommodated in the light-transmitting hole, and external light can penetrate through the protective film layer and the transparent supporting layer and irradiate the photosensitive surface of the camera module.

The embodiment of the application provides a flexible display screen, through seting up the light trap that runs through substrate rete and demonstration rete for after external light passed the protection rete, the accessible light trap pierces through flexible display screen. After the flexible display screen is loaded to the electronic equipment, external light can irradiate the photosensitive device corresponding to the flexible display screen at the light-transmitting hole, so that the function of the photosensitive device is realized. Meanwhile, the transparent supporting layer is arranged on one side of the protective film layer in the light transmitting hole to support the protective film layer, so that the structural strength and the impact resistance of the flexible display screen at the light transmitting hole can be improved, and the deformation probability of the flexible display screen at the light transmitting hole is reduced.

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 a schematic structural diagram of an electronic device 10 provided in an embodiment of the present application;

FIG. 2 is an exploded view of the electronic device 10 of FIG. 1;

FIG. 3 is a schematic diagram of the electronic device 10 of FIG. 1 in a folded state;

fig. 4 is a schematic structural diagram of the camera module 200 in fig. 2;

FIG. 5 is a schematic diagram of the structure of the flexible display screen 300 of FIG. 2;

FIG. 6 is a schematic cross-sectional view of the electronic device 10 of FIG. 1 taken along line V-V;

fig. 7 is a schematic structural diagram of the flexible display 300 in fig. 6 at the light-transmitting hole 303;

FIG. 8 is a schematic view of the structures of the substrate film layer 310 and the display film layer 320 of FIG. 7;

fig. 9 is a schematic structural view of the protective film layer 330 in fig. 7;

FIG. 10 is a schematic diagram of the substrate film layer 310, the display film layer 320 and the protection film layer 330 of FIG. 9 in yet another embodiment;

fig. 11 is a schematic structural view of the protective film layer 330 and the transparent support layer 340 in fig. 10;

fig. 12 is a schematic structural view of the protective film layer 330 and the transparent support layer 340 in fig. 11 in another embodiment;

fig. 13 is an assembly diagram of the camera module 200 of fig. 6 with the substrate film layer 310, the display film layer 320 and the protection film layer 330.

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 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 a schematic structural diagram of an electronic device 10 according to an embodiment of the present disclosure, fig. 2 is a schematic exploded structural diagram of the electronic device 10 in fig. 1, and fig. 3 is a schematic folded state diagram of the electronic device 10 in fig. 1.

The electronic device provided by the embodiment of the present application may be a foldable mobile phone, a foldable tablet computer, a foldable personal digital assistant, a foldable electronic book reader, and the like, and the embodiment takes the foldable mobile phone as an example to perform the following description. As shown in fig. 1 and 2, the electronic device 10 may include: the camera module 200 comprises a shell 100, a camera module 200 and a flexible display screen 300. Wherein the housing 100 and the flexible display 300 can be unfolded or folded along the axis 11 to realize the foldable function of the electronic device 10. The housing 100 is connected to the flexible display 300, and the housing and the flexible display can jointly enclose to form an accommodating space 400. The camera module 200 may be disposed in the accommodating space 400. The flexible display screen 300 is used for realizing an image display function of the electronic device 10, and a partial area of the flexible display screen 300 can transmit light, so that the camera module 200 can realize a shooting function through the light-transmitting area. In this embodiment, the flexible display screen 300 has higher structural strength and impact resistance in the light-transmitting area, so that the probability of deformation of the flexible display screen 300 in the light-transmitting area can be reduced, and the problems that the imaging resolution of the camera module 200 is influenced and glare is generated after the flexible display screen 300 deforms in the light-transmitting area are solved.

As shown in fig. 2, the case 100 may include: a middle frame 110 and a rear cover 120. The flexible display 300 may be disposed to cover one side of the middle frame 110, and the rear cover 120 may be disposed to cover the other opposite side of the middle frame 110. Wherein, the side wall of the middle frame 110 may extend in the thickness direction of the electronic device 10, so that the middle frame 110 may form a corresponding open structure. The flexible display screen 300 may cover the open structure, so as to form the accommodating space 400 together with the middle frame 110. The accommodating space 400 may be used to accommodate the camera module 200, and may also be used to accommodate other electronic devices of the electronic device 10, such as a fingerprint sensor, a circuit board, an infrared sensor, and the like, and the middle frame 110 may be used to support and fix the electronic devices located in the accommodating space 400.

The rear cover 120 may cover the other opposite side of the middle frame 110, and may also surround the middle frame 110 to form a corresponding receiving space (not shown). The receiving space may be used to receive electronic devices such as a battery, a rear camera, and a flashlight in the electronic device 10, and the rear cover 120 may be used to cover and protect the electronic devices located in the receiving space. In some embodiments, the housing 100 may also include only the back cover 120. The rear cover 120 may also form the above-mentioned open structure by extending the sidewalls of the rear cover 120 to a side near the flexible display 300. The flexible display screen 300 may cover the open structure of the rear cover 120, and form an accommodating space 400 together with the rear cover 120 to accommodate the camera module 200 and other electronic devices of the electronic device 10.

The middle frame 110 may be made of glass, metal, hard plastic, or the like, so that the middle frame 110 has a certain structural strength and can support functional devices in the accommodating space 400. Accordingly, the material of the rear cover 120 may also be glass, metal, rigid plastic, etc., so that the rear cover 120 also has a certain structural strength, which may protect the electronic device 10. In addition, since the middle frame 110 and the rear cover 120 are generally directly exposed to the external environment, the middle frame 110 and the rear cover 120 may preferably have certain wear-resistant, corrosion-resistant, scratch-resistant, and other properties, or the outer surfaces of the middle frame 110 and the rear cover 120 may be coated with a layer of functional material for wear-resistant, corrosion-resistant, scratch-resistant, and the like.

As shown in fig. 2 and 3, the electronic device 10 may further be provided with a hinge mechanism 500 for implementing a foldable function of the electronic device 10. The spindle mechanism 500 may be coupled to the housing 100 such that the housing 100 may be unfolded or folded along the axis 11 by the spindle mechanism 500. For example, the middle frame 110 may be divided into a first middle frame 111 and a second middle frame 112 along the axis 11, and the rotating mechanism 500 may be disposed between the first middle frame 111 and the second middle frame 112 along the axis 11 and connected to the first middle frame 111 and the second middle frame 112, respectively. When the user rotates the first middle frame 111, the first middle frame 111 can rotate relative to the second middle frame 112 through the rotating shaft mechanism 500, so as to fold with the second middle frame 112 along the axis 11. The specific structure of the rotating shaft mechanism 500 can refer to the prior art, and is not described herein. 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.

Accordingly, the rear cover 120 may also be divided into a first rear cover 121 and a second rear cover 122 along the axis 11. The first rear cover 121 can be covered on the first middle frame 111, and the second rear cover 122 can be covered on the second middle frame 112, so that the first rear cover 121 can be driven by the first middle frame 111 to fold along the axis 11 and the second rear cover 122. In the present embodiment, the first middle frame 111 and the first rear cover 121 may constitute the first mounting region 101 of the case 100, and the second middle frame 112 and the second rear cover 122 may constitute the second mounting region 102 of the case 100. The first mounting area 101 and the second mounting area 102 may be used to support the flexible display screen 300 and to mount the electronics required by the electronic device 10.

In some embodiments, a flexible material, such as leather, rubber, foam, etc., may be further disposed between the first rear cover 121 and the second rear cover 122. Through setting up the corresponding region of slewing mechanism 500 with flexible material for flexible material not only can cover slewing mechanism 500, plays waterproof dirt-proof effect, can also satisfy the required bendability of electronic equipment 10 in slewing mechanism 500 region. In addition, in other embodiments, the rear cover 120 may not be divided into the first rear cover 121 and the second rear cover 122, and may be an integral body made of a flexible material, so as to directly attach to the sides of the first middle frame 111 and the second middle frame 112 facing away from the flexible display screen 100, so as to improve the appearance integrity of the electronic device 10.

In this embodiment, the axis 11 may be a symmetrical folding line of the electronic device 10, i.e. the electronic device 10 may be symmetrical about the axis 11. In some embodiments, the axis 11 may also be an asymmetric folding line, for example, a third or a fourth of the area of the electronic device 10 may be folded along the axis 11, and the specific folding area setting thereof may be adjusted according to actual requirements, which is not limited herein. Further, the axis 11 may not only be placed longitudinally as shown in the drawings, so that the electronic apparatus 10 is folded left and right based on the axis 11. It may also be placed laterally so that the electronic device 10 folds up and down based on the axis 11. 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.

Referring to fig. 4, fig. 4 is a schematic structural diagram of the camera module 200 in fig. 2.

As shown in fig. 4, the camera module 200 may be used to implement a shooting function of the electronic device 10. The camera module 200 may be a front camera of the electronic device 10, and front shooting of the electronic device 10 may be achieved by setting a light-transmitting area of the flexible display screen 300 opposite to the front camera. The camera module 200 may include: a lens 210 and a light sensor 220. The lens 210 may be disposed on a light-sensitive surface of the light sensor 220. The external light can be irradiated to the lens 210 through the light-transmitting area of the flexible display screen 300, and is transmitted to the photosensitive surface of the optical sensor 220 through the lens 210, so as to realize the photographing and imaging of the camera module 200. In this embodiment, the lens 210 may be disposed in the flexible display 300 to achieve the purpose of reducing the overall thickness of the electronic device 10.

Referring to fig. 5 to 7 in conjunction with fig. 2, fig. 5 is a schematic structural diagram of the flexible display 300 in fig. 2, fig. 6 is a schematic structural diagram of a partial cross-section of the electronic device 10 along v-v in fig. 1, and fig. 7 is a schematic structural diagram of the flexible display 300 in fig. 6 at the light-transmitting hole 303.

The flexible display screen 300 may be an OLED (Organic Light-Emitting Diode) screen, which can meet the folding performance required by the electronic device 10 while realizing image display of the electronic device 10. As shown in fig. 5, the flexible display 300 may cover a side of the middle frame 110 facing away from the rear cover 120, and the flexible display 300 may include a first display area 301 and a second display area 302 connected with each other, and the first display area 301 and the second display area 302 may be folded along the axis 11. For example, the first display area 301 may be disposed on a side of the first middle frame 111 facing away from the first rear cover 121. The second display area 302 may be disposed on a side of the second middle frame 112 facing away from the second back cover 122. A region where the first display area 301 and the second display area 302 meet may be provided on the hinge mechanism 500. When the user rotates the first middle frame 111, the first display area 301 can be folded along the axis 11 relative to the second display area 302 under the driving of the first middle frame 111.

The flexible display screen 300 may be provided with a light hole 303 to form a light transmission area, so that external light can irradiate the camera module 200 through the light hole 303 to realize the shooting function of the camera module 200. As shown in fig. 5 and 6, the light hole 303 may be disposed in the second display area 302, and the light hole 303 may be located at an edge of the second display area 302 away from the axis 11, so as to prevent the light hole 303 from affecting the image display of the second display area 302. The camera module 200 can be disposed on the second middle frame 112 and disposed opposite to the light hole 303 of the second display area 302, so that external light can irradiate the camera module 200 through the light hole 303 to realize the shooting function of the camera module 200. In the present embodiment, the light hole 303 may have a shape similar to a circle in appearance to fit the lens 210 of the camera module 200.

In some embodiments, the light hole 303 of the flexible display 300 can also be disposed in the first display area 301, only the light hole 303 needs to be located outside the area corresponding to the rotating shaft mechanism 500, and the camera module 200 and the light hole 303 are correspondingly disposed. Meanwhile, the opening position of the light hole 303 may not be limited to the position shown in fig. 5, and the specific opening position may be adjusted according to actual requirements, which is not limited herein. In addition, due to different style designs, the light hole 303 may also be in other shapes such as an ellipse, a triangle, a square, etc. only the camera module 200 needs to receive enough light for imaging through the light hole 303.

As shown in fig. 7, the flexible display screen 300 may include: a substrate film layer 310, a display film layer 320, a protective film layer 330, and a transparent support layer 340. The substrate film layer 310, the display film layer 320, and the protection film layer 330 may be sequentially stacked, and the substrate film layer 310 may be disposed on a side of the middle frame 110 away from the rear cover 120. The substrate film layer 310 may be used to support the display film layer 320. The display film layer 320 may be used to emit light to realize image display of the flexible display screen 300. The protective film layer 330 may serve to protect the display film layer 320, and a user may observe an image formed by the display film layer 320 after emitting light through the protective film layer 330. The light hole 303 may penetrate through the substrate film layer 310 and the display film layer 320, so that external light can irradiate the camera module 200 through the light hole 303 after passing through the protection film layer 330, thereby implementing a shooting function of the camera module 200. The transparent supporting layer 340 may be disposed on one side of the protective film layer 330 in the light hole 303, and is used to support the protective film layer 330, so as to improve the structural strength and the impact resistance of the protective film layer 330 at the light hole 303, reduce the probability of deformation of the flexible display screen 300 at the light hole 303, and avoid the problem that the imaging resolution of the camera module 200 is affected and glare is generated after the flexible display screen 300 deforms at the light hole 303.

Referring to fig. 8, fig. 8 is a schematic structural diagram of the substrate film layer 310 and the display film layer 320 in fig. 7.

As shown in fig. 8, the substrate film layer 310 may include a buffer layer 311 and a base layer 312, which are stacked. The buffer layer 311 may be disposed on a side of the display film layer 320 facing away from the protective film layer 330 to space the display film layer 320 and the substrate layer 312. The buffer layer 311 can protect the display film layer 320 in the folding process of the flexible display screen 300, prevent the display film layer 320 from being in hard contact with the substrate layer 312, reduce the influence of the substrate layer 312 on the display film layer 320, and improve the reliability of the display film layer 320. For example, the buffer layer 311 may be made of a flexible material such as foam, and rubber, so that the buffer layer 311 may have a buffering effect. In the present embodiment, the buffer layer 311 may be made of foam having a property that viscosity increases with an increase in applied pressure, compared to rubber and foam. Namely, when the foam is subjected to external instant large impact force, the foam has certain structural strength and is not easy to deform. When the force to which the foam is subjected is slowly applied, it exhibits its normal characteristics, becoming soft and easily deformable. Therefore, when the electronic device 10 is impacted by an external force, the buffer layer 311 can also play a role in weakening the impact force, and further, the probability that the flexible display screen 100 is damaged by the impact force is reduced.

The base layer 312 may have a rigidity such that the base layer 312 can support the display film layer 320 and the protective film layer 330 to maintain the flatness of the flexible display 300 after being unfolded along the axis 11 while satisfying the folding performance required by the flexible display 300. For example, the base layer 312 may be made of a metal material such as steel, copper, or aluminum, so that the base layer 312 has a certain structural strength and a certain flexibility. In the present embodiment, the base layer 312 may be a steel sheet made of stainless steel, and may have a thickness of 0.08mm to 0.12 mm. The thickness of the substrate layer 312 may be 0.1mm, and the steel sheet with the thickness of 0.1mm can not only meet the overall thickness requirement of the flexible display screen 300, but also optimize the support of the substrate layer 312 to the display film layer 320 and the protection film layer 330. In some embodiments, the specific thickness of the substrate layer 312 may also be set according to the actual bending property, and is not limited herein. In addition, in other embodiments, the area of the substrate layer 312 opposite to the rotating shaft mechanism 500 may be further provided with a plurality of holes, so that the rigidity of the substrate layer 312 at the rotating shaft mechanism 500 is reduced through the holes while the lowest support property of the substrate layer 312 is maintained, so as to meet the bending performance required by the flexible display screen 300 at the rotating shaft mechanism 500. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise.

As shown in fig. 8, the display film layer 320 may include a polarizing layer 321, a light emitting layer 322, and a substrate layer 323, which are sequentially stacked. The substrate layer 323 may be disposed on a side of the buffer layer 311 away from the base layer 312. The polarizing layer 321 may be a circular polarizer and is used to prevent the flexible display 300 from reflecting and shining after being irradiated by light, so as to improve the contrast of the flexible display 300 in a bright environment. The light emitting layer 322 is used to emit light to form an image to be displayed on the flexible display 300, and may include an anode metal layer, a hole injection layer, a hole transport layer, an electroluminescent layer, an electron output layer, an electron injection layer, and a cathode metal layer, which are sequentially stacked, and may realize a light emitting function of the light emitting layer 322 by transporting electrons and holes in the above stack. The specific structure and the light emitting principle of the light emitting layer 322 can be referred to in the prior art, and are not described herein. The substrate layer 323 may be used to carry the light emitting layer 322. The substrate layer 323 may be any one of a CPI (polyimide) film, a COP (cyclic Olefin Polymer) film, and UTG (Ultra Thin Glass) film to satisfy the folding performance required by the flexible display panel 300. In this embodiment, the substrate layer 323 may be a CPI film, so that the substrate layer 323 may have stronger high and low temperature resistance, electrical insulation, adhesion, radiation resistance, high modulus bending resistance, and the like.

Referring to fig. 9 to 12, fig. 9 is a schematic structural diagram of the protective film layer 330 in fig. 7, fig. 10 is a schematic structural diagram of a further embodiment of the substrate film layer 310, the display film layer 320 and the protective film layer 330 in fig. 9, fig. 11 is a schematic structural diagram of the protective film layer 330 and the transparent support layer 340 in fig. 10, and fig. 12 is a schematic structural diagram of the protective film layer 330 and the transparent support layer 340 in fig. 11 in another embodiment.

As shown in fig. 9, the protective film layer 330 may include a protective layer 331, a cover plate layer 332, a vibration damping layer 333, and an adhesive layer 334, which are sequentially stacked. The adhesive layer 334 is disposed on a side of the display film layer 320 facing away from the substrate film layer 310. The protective layer 331 may be used to protect the cover plate layer 332 from abrasion or scratching of the cover plate layer 332. The cover sheet layer 332 may serve to protect the display film layer 320 while also reducing the plastic feel of the flexible display screen 300. The damping layer 333 is used to alleviate the damage of the pressure to the flexible display screen 300, and improve the reliability of the flexible display screen 300. The adhesive layer 334 is used to adhere the display film layer 320 to connect the protection film layer 330 and the display film layer 320.

Specifically, the protective layer 331 may be any one of a CPI (color Polyimide) film, a PET (Poly-Ethylene Terephthalate) film, and a PC (Polycarbonate) film, so that the protective layer 331 not only can satisfy the folding performance required by the flexible display panel 300, but also can protect the cover plate layer 332, and prevent the cover plate layer 332 from being worn or scratched. The cover plate layer 332 may be UTG (Ultra Thin Glass), and the thickness of the cover plate layer 332 may range from 25 μm to 35 μm, so as to improve the Glass texture of the flexible display screen 300 and reduce the plastic texture of the flexible display screen 300. In this embodiment, the specific thickness of the cover plate layer 332 may be 28 μm, 30 μm or 32 μm, so that the cover plate layer 332 may bring a better glass texture and ensure that the thickness of the flexible display screen 300 is not too thick. The shock absorbing layer 333 may be a PET film or a thin film similar to the PET film to improve the shock resistance of the flexible display 300. The Adhesive layer 334 may be an OCA (optical Clear Adhesive) glue to ensure the light transmittance of the protective film 330, so that the light emitted from the display film 320 exits the protective film 330.

Further, in order to improve the structural strength and the impact resistance of the protective film 330 at the light hole 303, the transparent supporting layer 340 may be disposed on one side of the protective film 330 near the display film 320, so as to reduce the probability of deformation of the protective film 330 at the light hole 303, and avoid the deformation problem of the protective film 330 at the light hole 303 due to uneven internal and external pressure differences, so as to maintain the flatness of the flexible display screen 300. Meanwhile, the problem that the imaging resolving power of the camera module 200 is weakened and glare is generated due to the influence of the PV (Peak to Valley) value on the surface of the cover plate layer 332 caused by the uneven structure at the light-transmitting hole 303 after the protective film layer 330 deforms due to the uneven internal and external pressure difference can also be avoided.

As shown in fig. 9, a transparent support layer 340 may be disposed on a side of the adhesive layer 340 within the light-transmitting hole 303. Because the adhesive layer 334 originally has adhesiveness, the transparent supporting layer 340 can be directly adhered to the adhesive layer 334 without separately arranging an adhesive for adhesion, thereby facilitating the overall thinning of the electronic device 10. Meanwhile, since the transparent support layer 340 is adhered to only one side of the adhesive layer 334 within the light transmission hole 303, it is not adhered to the display film layer 320 in the region of the light transmission hole 303. Therefore, in the folding process of the flexible display screen 300, when the stack structures are dislocated due to inconsistent bending radii, the transparent support layer 340 does not affect the sliding of the stacks, thereby preventing the stack structures from being damaged due to the influence of the transparent support layer 340 in the folding process. In this embodiment, the shape of the transparent support layer 340 may be the same as the light transmission holes 303 to support the area of the protective film layer 330 at the light transmission holes 303 to the maximum, thereby improving the structural strength and impact resistance of the protective film layer 330 at the light transmission holes 303.

Specifically, the transparent supporting layer 340 may be glass, and the thickness of the transparent supporting layer 340 may range from 0.08mm to 0.42mm, so that the transparent supporting layer 340 has sufficient supporting force and excellent light transmittance, so as to satisfy the structural strength required by the protective film 330 at the light hole 303 and the light transmittance required by the camera module 200 at the light hole 303. In this embodiment, the transparent supporting layer 340 may also be sapphire glass with higher structural strength, and the thickness value may be 0.2mm or 0.3mm, so that the transparent supporting layer 340 can improve the structural strength of the protective film layer 330 at the light transmitting hole 303, and at the same time, can not greatly affect the overall thickness of the electronic device 10. In some embodiments, the transparent supporting layer 340 may also be another structure with higher light transmittance and hardness, and only the transparent supporting layer 340 needs to increase the structural strength of the protective film 330 at the light hole 303 and satisfy the light transmittance required by the camera module 200 at the light hole 303.

Further, since the lens 210 of the camera module 200 is accommodated in the light hole 303, the flexible display 300 is spaced from the camera module 200 by a certain distance in order to avoid the flexible display 300 from abutting against the area of the camera module 200 in the light hole 303 when sliding during the folding process. However, the camera module 200 and the flexible display 300 are spaced apart from each other by a certain distance in the thickness direction of the electronic device 10. As shown in fig. 10, in some embodiments, in order to further reduce the separation distance between the camera module 200 and the flexible display screen 300, the overall thickness of the electronic device 10 is affected. The protective film layer 330 may further have a blind hole 335 at one side in the light hole 303, and a partial area of the transparent supporting layer 340 may be disposed in the blind hole 335, so as to achieve thinning of the electronic device 10.

As shown in fig. 11, the blind hole 335 may penetrate through the adhesive layer 334, and the aperture of the blind hole 335 is the same as that of the light-transmitting hole 303, so that a partial area of the transparent support layer 340 may be disposed on a side of the shock absorbing layer 335 within the blind hole 335. By receiving a portion of the transparent support layer 340 through the blind hole 335, the electronic device 10 can be thinned. The transparent supporting layer 340 may be bonded to the damping layer 333 by UV (Ultraviolet ray) glue or liquid OCA (optical Clear Adhesive), so as to improve the connection reliability between the transparent supporting layer 340 and the protective film layer 330, and achieve the purpose of enhancing the structural strength of the protective film layer 330 at the light hole 303.

In other embodiments, as shown in fig. 12, in order to further achieve overall reduction of the electronic device 10, the blind hole 335 may further penetrate through the shock absorbing layer 333 and the adhesive layer 334, so that the transparent supporting layer 340 may be disposed on a side of the cover board layer 332 within the blind hole 335, and an area where the transparent supporting layer 340 is disposed within the blind hole 335 is increased, thereby achieving the purpose of further overall reduction of the electronic device 10. Meanwhile, the cover plate layer 332 may be made of ultra-thin glass, and the transparent support layer 340 may be made of glass. Accordingly, the transparent support layer 340 may be fusion-bonded to the cover plate layer 332 by a glass solder to improve the coupling strength of the transparent support 340 and the protective film layer 330. Through welding transparent supporting layer 340 in blind hole 335 one side of apron layer 332, not only can realize the complete machine attenuate of electronic equipment 10, but also furthest's promotion protection film layer 330 structural strength and shock resistance in light hole 303 department. Furthermore, in some embodiments, the transparent support layer 340 may also be adhered to the side of the cover plate layer 332 within the blind hole 335 by UV glue or liquid OCA glue, only that the transparent support layer 340 may increase the structural strength of the protective film layer 330 at the light transmission hole 303.

Referring to fig. 13, fig. 13 is an assembly diagram of the camera module 200 of fig. 6, the substrate film layer 310, the display film layer 320 and the protection film layer 330.

As shown in fig. 13, the lens 210 of the camera module 200 can be accommodated in the light hole 303, so as to achieve the purpose of reducing the overall thickness of the electronic device 10. The lens 210 may be disposed on one side of the display film layer 320 in the light hole 303, and the lens 210 and the transparent supporting layer 340 may be disposed at an interval, so as to prevent the transparent supporting layer 340 from abutting against the lens 210 when the flexible display screen 300 slides during the folding process. For example, the vertical distance D1 between the lens 210 and the transparent support layer 340 may be 0.1mm to 0.2 mm. In this embodiment, the vertical distance between the lens 210 and the protective film 330 may be 0.1mm, which can reduce the influence of the separation distance on the overall thickness of the electronic device 10 while ensuring the safe separation distance.

Accordingly, the display film 320 may also be disposed at a distance from the lens 210 to avoid the display film 320 abutting against the lens 210. For example, the vertical distance D2 between the display film layer 320 and the lens 210 may be 0.2mm to 0.4 mm. Further, the aperture of the light hole 303 at the substrate film layer 310 may be larger than the aperture of the light hole 303 at the display film layer 320, so that a step may be formed at the light hole 303 for providing an avoiding space for the connection structure between the lens 210 and the optical sensor 220, and avoiding the camera module 200 from interfering with the substrate film layer 310. In some embodiments, the specific separation distance between the transparent supporting layer 340 and the lens 210, the specific separation distance between the display film layer 320 and the lens 210, and the section difference value formed by the substrate film layer 310 and the display film layer 320 may also be specifically set according to actual requirements, and the embodiment is not limited herein.

According to the flexible display screen 300 provided by the embodiment of the application, the light holes 303 penetrating through the substrate film layer 310 and the display film layer 320 are formed, so that after external light passes through the protective film layer 330, the flexible display screen 300 can be penetrated through the light holes 303. After the flexible display 300 is loaded on the electronic device 10, the external light can irradiate the photosensitive device corresponding to the light hole 303 of the flexible display 300, so as to implement the function of the photosensitive device. Meanwhile, the transparent supporting layer 340 is arranged on one side of the protective film layer 330 in the light hole 303 to support the protective film layer 330, so that the structural strength and the impact resistance of the flexible display screen 300 at the light hole 303 can be improved, and the probability of deformation of the flexible display screen 300 at the light hole 303 is reduced.

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 (10)

1. The flexible display screen is characterized by comprising a substrate film layer, a display film layer and a protective film layer which are sequentially stacked;

the flexible display screen is provided with a light hole, and the light hole penetrates through the substrate film layer and the display film layer;

and a transparent supporting layer is arranged on one side of the protective film layer in the light-transmitting hole so as to improve the structural strength of the protective film layer at the light-transmitting hole.

2. The flexible display screen of claim 1, wherein one side of the protective film layer in the light-transmitting hole is provided with a blind hole; and partial area of the transparent supporting layer is arranged in the blind hole.

3. The flexible display screen of claim 2, wherein the protective film layer comprises a protective layer, a cover plate layer, a damping layer and an adhesive layer which are sequentially stacked;

the bonding layer is arranged on one side of the display film layer, which is far away from the substrate film layer; the blind hole penetrates through the bonding layer and the damping layer, and the transparent supporting layer is arranged on one side of the cover plate layer in the blind hole.

4. The flexible display screen of claim 3, wherein the cover sheet layer is welded to the transparent support layer.

5. The flexible display screen of claim 2, wherein the protective film layer comprises a protective layer, a cover plate layer, a damping layer and an adhesive layer which are sequentially stacked;

the bonding layer is arranged on one side of the display film layer, which is far away from the substrate film layer; the blind hole penetrates through the bonding layer; and the transparent supporting layer is arranged on one side of the damping layer in the blind hole.

6. The flexible display screen of claim 1, wherein the protective film layer comprises a protective layer, a cover plate layer, a damping layer and an adhesive layer which are sequentially stacked;

the bonding layer is arranged on one side of the display film layer, which is far away from the substrate film layer; the transparent supporting layer is arranged on one side of the bonding layer in the light-transmitting hole.

7. A flexible display screen according to claim 3 or 5 or 6, wherein the cover sheet layer is made of ultra-thin glass and the transparent support layer is made of glass.

8. The flexible display screen of claim 1, wherein the display film layer comprises a polarizing layer, a light emitting layer and a substrate layer which are sequentially stacked;

the polarizing layer is arranged on one side of the protective film layer close to the substrate film layer.

9. The flexible display of claim 1, wherein the substrate film layer comprises a buffer layer and a base layer in a stacked arrangement;

the buffer layer is arranged on one side of the display film layer, which deviates from the protective film layer.

10. An electronic device, characterized in that the electronic device comprises: a housing, a camera module and a display screen according to any one of claims 1 to 9;

the display screen is connected with the shell, and the display screen and the shell are arranged together to form an accommodating space;

the camera module is arranged in the accommodating space, part of the area of the camera module is accommodated in the light-transmitting hole, and external light can penetrate through the protective film layer and the transparent supporting layer and irradiate the camera module.

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