Folding screen and electronic device

Abstract

The application discloses a folding screen and an electronic device. The folding screen is attached to a segmented rigid plate at a non-bending part of the back surface, thereby playing a role of rigid strengthening and making up for the deficiency of the flatness of the structural member. A flatness compensation assembly is arranged between the back surface bending part and the shaft support strip. The flatness compensation assembly comprises a bendable plate and back adhesive attached to both sides of the bendable plate. Thus, the concave-convex feeling caused by the direct contact between the shaft support strip and the folding screen is avoided, the flatness of the bending part is improved, and the entire manufacturing process is operable and the manufacturing process is simplified.

Description

TECHNICAL FIELD

[0001] The present application generally relates to the technical field of mechanical manufacturing, and in particular to a folding screen and an electronic device. BACKGROUND

[0002] In modern society, more and more electronic devices with display functions are widely used in people's daily life and work, becoming an indispensable important tool. The main component of electronic devices to realize display function is display screen. With the continuous progress of science and technology and the increasing demand of people, foldable flexible display screen emerges as the times require.

[0003] Due to the characteristics of lightness, thinness and softness and foldability of the flexible display screen, on the one hand, it is easy to be deformed by external force such as uneven structure or rough shell, which makes the shadow line under light show irregular and smooth phenomenon, seriously affecting the overall texture and seniority; on the other hand, when the flexible display screen recovers from the folded state to the unfolded state, the plastic deformation caused by the material of the screen will cause local arching phenomenon in the folding area if the back of the display screen is not stuck to the shaft, and if the back of the display screen is stuck to the shaft, it will cause poor appearance flatness of the screen, and uneven feeling.

[0004] In related technology, an integral thin steel sheet is added to the back of the flexible display screen to improve the flatness of the screen, and silicon rubber is coated on the shaft to make the stress on the back of the screen uniform. However, the flatness of the screen in this way is difficult to control, and the process technology is required to be higher. SUMMARY

[0005] In view of the above defects or deficiencies in the prior art, it is desirable to provide a folding screen and an electronic device which can improve the flatness of the surface of the folding screen and simplify the process technology.

[0006] In a first aspect, the present application provides a folding screen, the back of the folding screen is attached to a segmented rigid plate in a non-bending part, and a flatness compensation assembly is arranged between the back bending part and the shaft support strip, the flatness compensation assembly comprises a bendable plate and a back adhesive attached to both sides of the bendable plate.

[0007] Optionally, the segmented rigid plate is further attached to a plurality of OCA slip gels on the side away from the back non-bending part, and the distance between the slip gels located in different segmented rigid plates is not equal.

[0008] Optionally, the thickness of the slip gel is 0.05mm-0.4mm.

[0009] Optionally, the segmented rigid plate comprises any one of glass plate, glass fiber plate, stainless steel sheet or plastic sheet.

[0010] Optionally, the segmented rigid plate has a thickness of 0.05mm to 0.4mm.

[0011] Optionally, the back of the folding screen is further attached with an integrated rigid plate.

[0012] Optionally, the segmented rigid plate in the folding screen is a glass plate with a thickness of 0.1mm, the integrated rigid plate is a glass plate with a thickness of 0.05mm or a stainless steel sheet, and the side of the segmented rigid plate away from the back non-bending part is attached with a slip adhesive with a thickness of 0.05mm.

[0013] Optionally, the back adhesives on both sides of the bendable plate are arranged in a staggered manner to generate a flatness compensation gap.

[0014] Optionally, the side of the bendable plate close to the back bending part is attached with a back adhesive, and the side of the bendable plate close to the shaft support strip is attached with two back adhesives, wherein the position of the compensation gap between the two back adhesives corresponds to the position of the back adhesive.

[0015] In a second aspect, the application provides an electronic device comprising the folding screen of the first aspect.

[0016] In summary, the folding screen and the electronic device provided by the embodiments of the application have the following advantages. The segmented rigid plate attached to the back non-bending part of the folding screen plays a role of rigid reinforcement, which makes up for the deficiency of the flatness of the structural part. The flatness compensation assembly arranged between the back bending part and the shaft support strip includes the bendable plate and the back adhesives attached to both sides of the bendable plate, which avoids the concave-convex feeling caused by the direct contact between the shaft support strip and the folding screen, improves the flatness of the bending part, and has strong operability in the whole manufacturing process, which simplifies the manufacturing process. BRIEF DESCRIPTION OF DRAWINGS

[0017] Other features, objects and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments, made with reference to the following drawings:

[0018] Figure 1 A basic structure schematic diagram of a folding screen provided by the embodiments of the application;

[0019] Figure 2 A structure schematic diagram of another folding screen provided by the embodiments of the application;

[0020] Figure 3 A structure schematic diagram of another folding screen provided by the embodiments of the application;

[0021] Figure 4 A structure schematic diagram of another folding screen provided by the embodiments of the application;

[0022] Figure 5 A structural diagram of a folding screen provided for another embodiment of the application is shown in the figure;

[0023] Figure 6 An application diagram of a folding screen provided for an embodiment of the application is shown in the figure;

[0024] Figure 7 A structural block diagram of an electronic device provided for an embodiment of the application is shown in the figure.

[0025] Reference signs:

[0026] 100 - folding screen, 101 - segmented rigid plate, 102 - rotating shaft support strip, 103 - flatness compensation assembly, 1031 - bendable plate, 1032 - back adhesive, 1033 - compensation gap, 104 - sliding adhesive, 105 - integrated rigid plate, 106 - cover plate, 1061 - laser adhesive tape, 107 - middle plate;

[0027] 201 - electronic device, 2011 - microprocessor, 2012 - memory, 2013 - peripheral device interface, 2014 - radio frequency circuit, 2015 - sensor, 2016 - power supply. DETAILED DESCRIPTION

[0028] In order to make the person skilled in the art better understand the scheme of the application, the technical scheme in the embodiments of the application will be described clearly and completely below in combination with the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by the person skilled in the art without creative labor fall within the scope of protection of the application.

[0029] The terms "first", "second", "third", "fourth" and the like (if any) in the specification and claims of the application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the described embodiments of the application can be implemented in an order other than that illustrated or described herein.

[0030] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or modules does not have to be limited to those steps or modules clearly listed, but can include other steps or modules that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] For the convenience of understanding and description, the following will be described by Figures 1 to 7 The folding screen and the electronic device provided by the embodiments of the present application will be described in detail.

[0033] Please refer to Figure 1 which is a basic structure diagram of a folding screen provided by the embodiments of the present application. The back non-bending part of the folding screen 100 is attached to a segmented rigid plate 101, and a flatness compensation component 103 is arranged between the back bending part and the shaft support strip 102, which includes a bendable plate 1031 and back adhesive 1032 attached to both sides of the bendable plate 1031.

[0034] Among them, the back adhesive 1032 on both sides of the bendable plate 1031 is arranged in a staggered manner to generate a flatness compensation gap 1033, which can compensate for the local lifting force of the back adhesive 1032 on the area. For example, one side of the bendable plate 1031 close to the back bending part is attached to a piece of back adhesive, and the other side of the bendable plate 1031 close to the shaft support strip 102 is attached to two pieces of back adhesive, and the position of the compensation gap 1033 formed between the two pieces of back adhesive corresponds to the position of the piece of back adhesive. It should be noted that the attachment position of the two pieces of back adhesive on the side of the bendable plate 1031 close to the shaft support strip 102 can be Figure 1 The middle two shaft support strips 102 are shown. Similarly, as shown in Figure 2 The attachment position of the two pieces of back adhesive can also be the outermost two shaft support strips 102, which will not be described again. For example, please refer to Figure 3 The side of the bendable plate 1031 close to the back bending part is attached to two pieces of back adhesive, and the other side of the bendable plate 1031 close to the shaft support strip 102 is attached to a piece of back adhesive.

[0035] It should be noted that, due to the thin and flexible material of the foldable screen, the flatness of the non-bent and bent parts on the back of the screen faces different challenges. Specifically, the main influencing factor for the non-bent part is the flatness of the structural components during processing, while the main influencing factor for the bent part is the unevenness of the hinge support strip on the screen surface. Therefore, in this embodiment, a segmented rigid plate 101 is applied to the non-bent part of the back of the foldable screen 100, which strengthens the rigidity, enhances the premium feel of the screen, and compensates for any deficiencies in the flatness of the structural components. A flatness compensation component 103 is provided between the bent part and the hinge support strip 102. This flatness compensation component 103 includes a bendable plate 1031 and adhesive backing 1032 applied to both sides of the bendable plate. This avoids the unevenness caused by the hinge support strip 102 directly contacting the foldable screen 100, improves the flatness of the bent part, and effectively solves the problem of M-shaped arching during the folding and unfolding process.

[0036] Optionally, such as Figure 4 As shown, in other embodiments of this application, a plurality of OCA sliding adhesives 104 are also applied to the side of the segmented rigid plate 101 away from the non-bent portion on the back side. The distance between the sliding adhesives 104 on different segmented rigid plates is not equal. For example, the supporting segmented rigid plate is provided with denser sliding adhesives 104 with a spacing of 2 mm, while the folded segmented rigid plate is provided with sparser sliding adhesives 104 with a spacing of 10 mm. Optionally, the thickness of the sliding adhesive 104 is 0.05 mm to 0.4 mm, and the width of the sliding adhesive 104 can be 2 mm, 5 mm, or 10 mm, etc. The advantage of this design is that it ensures that the pull-out force of the sliding adhesive on the folding segment rigid plate is less than that of the CPI cover plate. This prevents the CPI cover plate from being pulled by the reaction force of the screen stack when the entire device is folded, thus avoiding the risk of failure due to large gaps and high stress on the screen stack. It also avoids the problem of uneven screen surface caused by applying back adhesive over a large area, thereby improving the tolerance for the flatness of the back components of the screen.

[0037] Optionally, in the embodiments of this application, the segmented rigid plate 101 may be any one of glass plate, fiberglass plate, stainless steel sheet or plastic sheet, and the thickness of the segmented rigid plate 101 may be 0.05mm to 0.4mm, which can play a role in strengthening rigidity, improving the high-end texture of the screen, and also making up for the lack of flatness in the processing of structural components.

[0038] Optionally, such as Figure 5As shown, in other embodiments of the present application, the back of the folding screen 100 is also attached with an integrated rigid plate 105. The integrated rigid plate 105 can include, but is not limited to, any one of a glass plate or a stainless steel sheet, and has a thickness of 0.05mm to 0.2mm, so that the screen can quickly reach the position after folding and unfolding, and the M-bend of the back bending part can quickly recover. It should be noted that when the thickness of the integrated rigid plate 105 is in the range of 0.15mm to 0.2mm, the screen bending is relatively difficult, at this time the bending part can be thinned or perforated to facilitate bending.

[0039] In the actual production process, please refer to Figure 6 As shown, the front of the folding screen 100 is attached with a CPI cover plate 106, and the two ends are fixed and packaged by adhesive laser tape 1061. Alternatively, the laser tape 1061 can also be replaced by double-sided tape or hot melt adhesive, etc. In addition to bonding the segmented rigid plate 101, the sliding glue 104 is also used to bond the middle plate 107, which is used to install and protect the internal electronic components. In addition, for example Figure 6 As shown, the segmented rigid plate 101 of the folding screen 100 is a glass plate with a thickness of 0.1mm, the integrated rigid plate 105 is a glass plate or a stainless steel sheet with a thickness of 0.05mm, and the side of the segmented rigid plate 101 away from the back non-bending part is attached with sliding glue 104 with a thickness of 0.05mm.

[0040] The folding screen provided by the embodiments of the present application has the effect of rigid reinforcement by attaching a segmented rigid plate to the back non-bending part of the folding screen, which makes up for the deficiency of the flatness of the structural parts; and a flatness compensation component is arranged between the back bending part and the shaft support strip, the flatness compensation component includes a bendable plate and back glue attached to both sides of the bendable plate, thereby avoiding the concave-convex feeling caused by the direct contact of the shaft support strip with the folding screen, improving the flatness of the bending part, and the entire manufacturing process is highly operable, simplifying the manufacturing process.

[0041] Based on the foregoing embodiments, the embodiments of the present application provide an electronic device. As shown in Figure 7 The electronic device 201 includes the folding screen 100 described above, which is used to display a user interface (User Interface, UI). The user interface can include graphics, text, icons, videos, and any combination thereof.

[0042] When the folding screen 100 is a touch display screen, it also has the ability to collect touch signals on or above its surface. The touch signal can be input as a control signal to the microprocessor 2011 of the electronic device 201 for processing. At this time, the folding screen 100 can also be used to provide virtual buttons and / or virtual keyboards, also known as soft buttons and / or soft keyboards.

[0043] The folding screen 100 can be a flexible display screen, which is arranged on a curved surface or a folding surface of the electronic device 201. Even, the folding screen 100 can also be arranged in an irregular shape that is not rectangular, that is, a special-shaped screen. The folding screen 100 can be made of a material such as a liquid crystal display (LCD) or an organic light-emitting diode (OLED).

[0044] In addition, the electronic device 201 further includes a microprocessor 2011 and a memory 2012, where the microprocessor 2011 can include one or more processing cores, such as a 4-core microprocessor, an 8-core microprocessor, etc. The microprocessor 2011 can be implemented in at least one of a hardware form of a digital signal processing (DSP), a field programmable gate array (FPGA), and a programmable logic array (PLA).

[0045] The microprocessor 2011 can also include a main processor and a coprocessor. The main processor is a processor for processing data in an awake state, also known as a central processing unit (CPU); the coprocessor is a low-power processor for processing data in a standby state.

[0046] In addition, the microprocessor 2011 can be integrated with a graphics processor (GPU) for rendering and drawing the content to be displayed by the display screen. In some embodiments, the microprocessor 2011 can also include an artificial intelligence (AI) processor for processing machine learning-related computing operations.

[0047] The memory 2012 can include one or more computer-readable storage media, which can be non-transitory. The memory 2012 can also include a high-speed random access memory, and a non-volatile memory such as one or more disk storage devices, flash memory devices.

[0048] In some embodiments, the electronic device 201 can further include a peripheral device interface 2013 and at least one peripheral device. The microprocessor 2011, the memory 2012 and the peripheral device interface 2013 can be connected through a bus or a signal line. Each peripheral device can be connected to the peripheral device interface 2013 through a bus, a signal line or a circuit board.

[0049] Specifically, the peripheral devices include, but are not limited to, a radio frequency circuit 2014, a foldable screen 100, a sensor 2015 and a power supply 2016. The peripheral device interface 2013 can be used to connect at least one peripheral device related to input / output (I / O) to the microprocessor 2011 and the memory 2012. In some embodiments, the microprocessor 2011, the memory 2012 and the peripheral device interface 2013 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the microprocessor 2011, the memory 2012 and the peripheral device interface 2013 can be implemented on a separate chip or circuit board, and the embodiments of the present application do not limit this.

[0050] The radio frequency circuit 2014 is used to receive and transmit radio frequency (RF) signals, also known as electromagnetic signals. The radio frequency circuit 2014 communicates with a communication network and other communication devices through electromagnetic signals. The radio frequency circuit 2014 converts electrical signals into electromagnetic signals for transmission, or converts received electromagnetic signals into electrical signals. Optionally, the radio frequency circuit 2014 includes an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a subscriber identity module card, etc. The radio frequency circuit 4014 can communicate with other devices through at least one wireless communication protocol. The wireless communication protocol includes, but is not limited to, a metropolitan area network, various generations of mobile communication networks (2G, 3G, 4G and 5G), a wireless local area network and / or a wireless fidelity (WiFi) network. In some embodiments, the radio frequency circuit 2014 can also include near field communication (NFC) related circuitry.

[0051] The sensor 2015 includes one or more sensors to provide status assessments of various aspects for the electronic device 201. Among others, the sensor 2015 includes an acceleration sensor. For example, the sensor 2015 can detect an open / close status of the electronic device 201, a change in position of the electronic device 201, the presence or absence of user contact with the electronic device 201, the orientation or acceleration / deceleration of the electronic device 201, and a temperature change of the electronic device 201. The sensor 2015 can include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor 2015 can further include a light sensor such as a complementary metal oxide semiconductor (CMOS) or a charge coupled device (CCD) image sensor for use in an imaging application. In some embodiments, the sensor 2015 can further include a pressure sensor, a gyro sensor, and a magnetic sensor.

[0052] Those skilled in the art can understand that the structure shown in FIG. 1 is not a limitation on the electronic device 201, and the electronic device 201 can include more or less components than those shown in the figure, or combine certain components, or use different component arrangements. Figure 7

[0053] It should be noted that the electronic device 201 involved in the embodiments of the present application can include, but is not limited to, a personal digital assistant (PDA), a tablet computer, a wireless handheld device, a mobile phone, and the like.

[0054] The above description is merely preferred embodiments of the present application and a description of the principles of the technology used. Those skilled in the art should understand that the scope of the application involved in the present application is not limited to the technical solutions formed by the specific combinations of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features can be replaced with technical features disclosed in the present application (but not limited to) having similar functions to form technical solutions.​

Claims

1. A folding screen, characterized in that, The back non-bending part of the folding screen is attached to a segmented rigid plate, a flatness compensation assembly is arranged between the back bending part and the shaft support strip, the flatness compensation assembly comprises a bendable plate and back adhesive attached to both sides of the bendable plate, the back adhesive on both sides of the bendable plate is arranged in a staggered manner to form a flatness compensation gap, and the segmented rigid plate is further attached to a plurality of OCA slip gels on the side away from the back non-bending part, the distance between the slip gels on different segmented rigid plates is not equal.

2. The folding screen according to claim 1, characterized in that, The thickness of the slip gel is 0.05mm-0.4mm.

3. The folding screen according to any one of claims 1 to 2, characterized in that, The segmented rigid plate comprises any one of a glass plate, a glass fiber plate, a stainless steel sheet or a plastic sheet.

4. The folding screen according to claim 3, characterized in that, The thickness of the segmented rigid plate is 0.05mm-0.4mm.

5. The folding screen of claim 1, wherein, The back of the folding screen is further attached to an integrated rigid plate.

6. The folding screen according to claim 5, characterized in that, The segmented rigid plate in the folding screen is a glass plate with a thickness of 0.1mm, the integrated rigid plate is a glass plate with a thickness of 0.05mm or a stainless steel sheet, and the thickness of the slip gel attached to the side of the segmented rigid plate away from the back non-bending part is 0.05mm.

7. The folding screen of claim 1, wherein, The side of the bendable plate close to the back bending part is attached to a piece of back adhesive, and the side of the bendable plate close to the shaft support strip is attached to two pieces of back adhesive, wherein the position of the compensation gap between the two pieces of back adhesive corresponds to the position of the piece of back adhesive.

8. An electronic device, comprising: The electronic device comprises the folding screen as claimed in any one of claims 1-7.

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