Display devices and display terminals

Abstract

This application provides a display device and a display terminal. The display device includes a cylindrical shaft, a modular screen body, and a flexible circuit board. The modular screen body is wound around the cylindrical shaft, with the starting end of the winding of the modular screen body connected to the cylindrical shaft. The flexible circuit board passes through the cylindrical wall of the cylindrical shaft, with one end of the flexible circuit board outside the cylindrical shaft connected to the starting end of the winding of the modular screen body, and the portion of the flexible circuit board inside the cylindrical shaft being inserted into the cylindrical shaft. Therefore, during the winding and sliding process of the modular screen body, the starting end of the winding of the modular screen body and the flexible circuit board are more firmly fixed relative to the cylindrical shaft. This reduces the relative movement between the starting end of the winding of the modular screen body and the flexible circuit board during the winding and sliding process, effectively reducing the possibility of adhesive layer stacking or film layer peeling caused by the stress on the modular screen body itself, improving the service life of the modular screen body, and also improving the reliability of the display device.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display device and a display terminal. Background Technology

[0002] With the innovation and development of flexible display technology, flexible display devices are being used in a wider range of fields, such as mobile phones, televisions, and automobiles. Flexible display devices with sliding and rolling shapes will surely occupy a place in the future field of flexible displays due to their obvious advantages such as small space occupation and portability.

[0003] However, the display effect, reliability, and service life (usually one of these three factors) of flexible display devices with sliding and rolling shapes need to be improved. Summary of the Invention

[0004] In view of this, embodiments of this application provide a display panel and a display terminal to at least partially solve the above-mentioned problems.

[0005] According to a first aspect of the present application, a display device is provided, comprising: a cylindrical shaft, a modular screen body, and a flexible circuit board; the modular screen body is wound around the cylindrical shaft, and the starting end of the winding of the modular screen body is connected to the cylindrical shaft; the flexible circuit board passes through the cylindrical wall of the cylindrical shaft, one end of the flexible circuit board located outside the cylindrical shaft is connected to the starting end of the winding of the modular screen body, and the portion of the flexible circuit board located inside the cylindrical shaft is inserted into the cylindrical shaft.

[0006] In one possible implementation, the cylindrical shaft includes a plurality of arc-shaped plates; the plurality of arc-shaped plates are circumferentially distributed to form the cylindrical shaft, adjacent arc-shaped plates are connected, and the flexible circuit board passes through the cylindrical wall of the cylindrical shaft between any two adjacent arc-shaped plates.

[0007] In one possible implementation, the plurality of arc-shaped plates are two arc-shaped plates; the cylindrical shaft is provided with a first connecting strip and a second connecting strip that are connected to each other, the first connecting strip is connected to the first arc-shaped plate of the two arc-shaped plates, and the second connecting strip is connected to the second arc-shaped plate of the two arc-shaped plates; the first connecting strip is connected to a first insert block inserted into the second connecting strip, and / or the second connecting strip is connected to a second insert block inserted into the first connecting strip.

[0008] In one possible implementation, the first connecting strip and the second connecting strip are located on opposite sides of the flexible circuit board; the first connecting strip and / or the portion of the flexible circuit board located inside the cylindrical shaft are connected to a fixing block, the fixing block connected to the first connecting strip is inserted into the portion of the flexible circuit board located inside the cylindrical shaft, and the fixing block connected to the portion of the flexible circuit board located inside the cylindrical shaft is inserted into the first connecting strip.

[0009] In one possible implementation, the first connecting strip and the second connecting strip are parallel to each other, with the side of the first connecting strip closest to the flexible circuit board abutting against the flexible circuit board, and the side of the second connecting strip closest to the flexible circuit board abutting against the flexible circuit board.

[0010] In one possible implementation, the first connecting strip and the second connecting strip are located on opposite sides of the flexible circuit board; the end face of the first arc-shaped plate near the flexible circuit board and the side face of the first connecting strip near the flexible circuit board are on the same plane, and the end face of the second arc-shaped plate near the flexible circuit board and the side face of the second connecting strip near the flexible circuit board are on the same plane.

[0011] In one possible implementation, the module screen is wound around the cylindrical shaft more than once, with the starting end of the winding of the module screen connected to the first end of the first arc-shaped plate. The first turn of the module screen being wound around the cylindrical shaft starts from the first end of the first arc-shaped plate, winds along the first arc-shaped plate to the second end of the first arc-shaped plate, and then winds to the second arc-shaped plate. The sum of the outer diameter of the first arc-shaped plate and the thickness of the module screen is equal to the outer diameter of the second arc-shaped plate.

[0012] In one possible implementation, a limiting strip is connected to the starting end of the winding of the module screen, and the limiting strip is inserted into the cylindrical shaft.

[0013] In one possible implementation, a glue groove is provided on the cylindrical shaft near the winding start end of the module screen; at least a portion of the limiting strip is located in the glue groove, and the glue groove is provided with glue that adheres to the inner wall of the glue groove, the winding start end of the module screen, and the limiting strip.

[0014] In one possible implementation, the module screen includes a protective layer, a touch display screen, and a support layer, with the touch display screen located between the protective layer and the support layer; the limiting strip is connected to the support layer; and one end of the flexible circuit board located outside the cylindrical shaft is electrically connected to the touch display screen at the starting end of the winding of the module screen.

[0015] According to a second aspect of the embodiments of this application, a display terminal is provided, the display terminal including a terminal device body and a display device disposed on the terminal device body as described in the first aspect or any of the above implementations.

[0016] According to the display device provided in the embodiments of this application, the display device includes a module screen whose winding start end is connected to a cylindrical shaft, and a flexible circuit board whose end outside the cylindrical shaft is connected to the winding start end of the module screen. The portion of the flexible circuit board inside the cylindrical shaft is inserted into the cylindrical shaft. Therefore, during the process of unfolding the module screen wound on the cylindrical shaft and winding the module screen onto the cylindrical shaft (referred to as the module screen winding and sliding process), the insertion and connection between the flexible circuit board and the cylindrical shaft, and the connection between the winding start end and the cylindrical shaft, make the winding start end of the module screen and the flexible circuit board more firmly fixed relative to the cylindrical shaft. This reduces the relative movement between the winding start end of the module screen and the flexible circuit board during the module screen winding and sliding process, effectively reducing the possibility of adhesive layer stacking or film layer peeling caused by the force on the module screen itself, improving the service life of the module screen, and also improving the reliability of the display device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the structure of a display device according to an embodiment of this application;

[0019] Figure 2 This is a cross-sectional view of a display device according to an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the structure of a cylindrical shaft according to an embodiment of this application;

[0021] Figure 4 This is a partial cross-sectional view of another display device according to an embodiment of this application;

[0022] Figure 5 This is a schematic diagram of the structure of a module screen according to an embodiment of this application;

[0023] Figure 6 This is a schematic diagram of the structure of another display device according to an embodiment of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Cylindrical shaft; 11. First arc-shaped plate; 111. Limiting groove; 112. Glue groove; 12. Second arc-shaped plate; 2. Module screen body; 21. Winding starting end; 211. Limiting strip; 22. Protective layer; 23. Touch screen; 24. Support layer; 3. Flexible circuit board; 4. Glue; 5. First connecting strip; 51. First insert block; 6. Second connecting strip; 61. Second insert block; 7. Fixing strip. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions in the embodiments of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art should fall within the protection scope of the embodiments of this application.

[0027] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in the embodiments of this application refers to and includes any or all possible combinations of one or more associated listed items.

[0028] It should be understood that in the description of the embodiments of this application, the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the scheme of the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0029] Furthermore, when an element or layer is referred to as being "on" another element or layer, "connected to," or "bonded to" another element or layer, the element or layer may be directly on the other element or layer, directly connected to, or directly bonded to the other element or layer, or there may be intermediate elements or layers. However, when an element or layer is referred to as being "directly on" another element or layer, "directly connected to," or "directly bonded to" another element or layer, there are no intermediate elements or layers.

[0030] The terms First, Second, etc., are used to describe various elements, components, regions, layers, and / or parts, but these elements, components, regions, layers, and / or parts should not be limited by these terms. These terms are used to distinguish one element, component, region, layer, and / or part from another element, component, region, layer, and / or part.

[0031] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] The specific implementation of the embodiments of this application will be further described below with reference to the accompanying drawings.

[0033] Figure 1 This is a schematic diagram of the structure of a display device according to an embodiment of this application. Figure 1 As shown, the display device includes: a cylindrical shaft 1, a module screen 2, and a flexible circuit board 3; the cylindrical shaft 1 is a cylindrical shaft, such as a round cylindrical shaft; the module screen 2 is a rollable flexible screen, which is wound around the cylindrical shaft 1, and the starting end 21 of the winding of the module screen 2 is connected to the cylindrical shaft 1; the flexible circuit board 3 passes through the cylindrical wall of the cylindrical shaft 1, so that a part of the flexible circuit board 3 is located inside the cylindrical shaft 1 and another part is located outside the cylindrical shaft 1, the end of the flexible circuit board 3 located outside the cylindrical shaft 1 is connected to the starting end 21 of the winding of the module screen 2, and the end of the flexible circuit board 3 located outside the cylindrical shaft 1 is also electrically connected to the starting end 21 of the winding of the module screen 2, and the part of the flexible circuit board 3 located inside the cylindrical shaft 1 is inserted and engaged with the cylindrical shaft 1.

[0034] In this embodiment, the winding start end 21 of the module screen 2 is connected to the cylindrical shaft 1. The end of the flexible circuit board 3 located outside the cylindrical shaft 1 is connected to the winding start end 21 of the module screen 2, and the portion of the flexible circuit board 3 located inside the cylindrical shaft 1 is inserted into the cylindrical shaft 1. Therefore, during the process of unfolding the module screen 2 wound on the cylindrical shaft 1 and winding the module screen 2 onto the cylindrical shaft 1 (referred to as the process of module screen 2 curling and sliding), the insertion and connection between the flexible circuit board 3 and the cylindrical shaft 1, and the connection between the winding start end 21 and the cylindrical shaft 1, make the winding start end 21 of the module screen 2 and the flexible circuit board 3 more firmly fixed relative to the cylindrical shaft 1. This reduces the relative movement between the winding start end 21 and the flexible circuit board 3 during the curling and sliding of the module screen 2, effectively reducing the possibility of adhesive layer stacking or film layer peeling caused by the force on the module screen 2 itself, improving the service life of the module screen 2, and also improving the reliability of the display device.

[0035] In one possible implementation, such as Figure 2 and Figure 3 As shown, the winding start end 21 of the module screen 2 is fixedly connected to a limiting strip 211, which is inserted into the cylindrical shaft 1. For example, a limiting groove 111 is opened on the outer surface of the cylindrical shaft 1, and the limiting strip 211 is inserted into the cylindrical shaft 1 through the limiting groove 111.

[0036] In this embodiment, the winding start end 21 of the module screen 2 is inserted into the cylindrical shaft 1 by a limiting strip 211, which makes the connection between the winding start end 21 of the module screen 2 and the cylindrical shaft 1 more secure.

[0037] Optionally, such as Figure 2 As shown, the cross-sectional area of ​​the limiting strip 211 gradually increases along the direction from the outer surface of the cylindrical shaft 1 to the inner surface of the cylindrical shaft 1. The shape of the limiting groove 111 matches the shape of the limiting strip 211. Therefore, the possibility of the limiting strip 211 coming out of the limiting groove 111 after being subjected to force can be reduced, so that the winding start end 21 of the module screen body 2 is more firmly connected to the cylindrical shaft 1.

[0038] Optionally, such as Figure 2 As shown, the winding start end 21 of the cylindrical shaft 1 and the module screen body 2 can also be bonded together with adhesive 4 to make the connection between the winding start end 21 of the module screen body 2 and the cylindrical shaft 1 more secure.

[0039] In one possible implementation, such as Figure 2 As shown, the adhesive 4 is bonded to the side of the winding start end 21 of the module screen 2 near the cylindrical shaft 1. The limiting strip 211 passes through the adhesive 4, and the side of the adhesive 4 away from the winding start end 21 is bonded to the outer surface of the cylindrical shaft 1. Thus, the adhesive 4 can further strengthen the connection between the winding start end 21 of the module screen 2 and the cylindrical shaft 1. Optionally, a groove for accommodating the adhesive 4 can also be provided on the side of the winding start end 21 of the module screen 2 near the cylindrical shaft 1 to make the winding start end 21 of the module screen 2 fit more closely to the cylindrical shaft 1. This embodiment of the application does not limit this.

[0040] In another possible implementation, such as Figure 4 As shown, a glue groove 112 is provided on the cylindrical shaft 1 near the winding start end 21 of the module screen body 2; at least a portion of the limiting strip 211 is located within the glue groove 112, and a glue 4 is provided within the glue groove 112 to adhere to the inner wall of the glue groove 112, the winding start end 21 of the module screen body 2, and the limiting strip 211. The thickness of the glue 4 is equal to the depth of the glue groove 112. Figure 3 The thickness of the colloid 4 and the depth of the colloid groove 112 are both h1.

[0041] In this embodiment, the colloid 4 is disposed in the colloid groove 112 opened on the cylindrical shaft 1. While strengthening the connection between the winding start end 21 of the module screen body 2 and the cylindrical shaft 1, and making the winding start end 21 of the module screen body 2 fit more closely with the cylindrical shaft 1, it can also avoid slotting on the module screen body 2, improve the life of the module screen body 2, and make the module screen body 2 thinner.

[0042] In one possible implementation, such as Figure 5 As shown, the module screen 2 includes a protective layer 22, a touch display screen 23 and a support layer 24. The touch display screen 23 is located between the protective layer 22 and the support layer 24. Based on this, the limiting strip 211 is fixedly connected to the support layer 24; the end of the flexible circuit board 3 located outside the cylindrical shaft 1 is electrically connected to the touch display screen 23 at the winding start end 21 of the module screen 2.

[0043] In this embodiment, the limiting strip 211 inserted into the cylindrical shaft 1 is connected to the support layer 24 of the module screen body 2. Thus, during the rolling and sliding process of the module screen body 2, the support layer 24 is the part of the module screen body 2 that is subjected to the greatest force, which effectively reduces the possibility of adhesive layer stacking or film layer peeling caused by the force on the touch display screen 23 itself, improves the service life of the touch display screen 23, and further improves the reliability of the display device.

[0044] In one possible implementation, such as Figure 2 and Figure 3 As shown, the cylindrical shaft 1 includes multiple arc-shaped plates; the multiple arc-shaped plates are circumferentially distributed to form a cylindrical shaft 1, adjacent arc-shaped plates are connected, and the flexible circuit board 3 passes through the cylindrical wall of the cylindrical shaft 1 between any two adjacent arc-shaped plates. The aforementioned limiting groove 111 can be opened on the outer surface of any arc-shaped plate.

[0045] In this embodiment, the cylindrical shaft 1 is formed by connecting multiple arc-shaped plates, and the flexible circuit board 3 passes through the cylindrical wall of the cylindrical shaft 1 between any two adjacent arc-shaped plates. Therefore, compared to inserting the flexible circuit board 3 into a slot opened in the cylindrical wall of the integral cylindrical shaft 1 and then connecting a portion of the flexible circuit board 3 inside the cylindrical shaft 1 to the cylindrical shaft 1, this embodiment directly assembles the flexible circuit board 3 between two adjacent arc-shaped plates during the assembly of the display device, which is more convenient. Furthermore, the cylindrical shaft 1 formed by multiple arc-shaped plates facilitates the connection between the portion of the flexible circuit board 3 inside the cylindrical shaft 1 and the cylindrical shaft 1 itself. Therefore, the display device can be more easily assembled, and the assembly yield can be improved.

[0046] In one possible implementation, such as Figure 3 and Figure 4As shown, multiple arc plates are actually two arc plates. Based on this, the cylinder shaft 1 is provided with a first connecting strip 5 and a second connecting strip 6 that are connected to each other. The first connecting strip 5 is connected to the first arc plate 11 of the two arc plates. This connection can be a fixed connection or an integral connection, etc. The second connecting strip 6 is connected to the second arc plate 12 of the two arc plates. This connection can be a fixed connection or an integral connection, etc. The first connecting strip 5 is connected to a first insert 51 that is inserted into the second connecting strip 6, and / or the second connecting strip 6 is connected to a second insert 61 that is inserted into the first connecting strip 5. The aforementioned limiting groove 111 can be formed on the outer surface of the first arc plate 11 or the second arc plate 12. For example, the limiting groove 111 is formed at the end of the outer surface of the first arc plate 11.

[0047] In one specific implementation, such as Figure 3 and Figure 4 As shown, both the first connecting strip 5 and the second connecting strip 6 can be straight strips. One or more of each type can be provided. For example, one of each type can be provided, and both are located within the same end of the cylindrical shaft 1. Alternatively, two of each type can be provided, with one first connecting strip 5 and one second connecting strip 6 located within one end of the cylindrical shaft 1, and the other first connecting strip 5 and the other second connecting strip 6 located within the other end of the cylindrical shaft 1. That is, two first connecting strips 5 are symmetrically arranged at both ends of the cylindrical shaft 1, and two second connecting strips 6... The first connecting strip 5 and the second connecting strip 6 are symmetrically arranged at both ends of the cylindrical shaft 1. The first connecting strip 5 and the second connecting strip 6 at the same end of the cylindrical shaft 1 are connected to each other. The specific number of the first connecting strip 5 and the second connecting strip 6 is not limited in this embodiment. The length direction of the first connecting strip 5 and the second connecting strip 6 are both parallel to the end face of the cylindrical shaft 1, and the length direction of the first connecting strip 5 and the length direction of the second connecting strip 6 are parallel to each other. One end of the first connecting strip 5 is fixedly connected to the inner wall of the first arc plate 11, and one end of the second connecting strip 6 is fixedly connected to the inner wall of the second arc plate 12. The first insert 51 is fixedly connected to the side of the first connecting strip 5 near the second connecting strip 6, and the second insert 61 is fixedly connected to the side of the second connecting strip 6 near the first connecting strip 5.

[0048] In this embodiment, the connection between the two arc-shaped plates forming the cylindrical shaft 1 is achieved by inserting the first insert 51 on the first connecting strip 5 into the second connecting strip 6, and inserting the second insert 61 on the second connecting strip 6 into the first connecting strip 5. As a result, the possibility of relative movement between the first connecting strip 5 and the second connecting strip 6 is relatively small, which makes the connection between the two arc-shaped plates more secure. Therefore, the structure of the cylindrical shaft 1 is more stable and reliable.

[0049] In one possible implementation, such as Figure 1 and Figure 4 As shown, the first connecting strip 5 and the second connecting strip 6 are located on both sides of the flexible circuit board 3 respectively; the first connecting strip 5 and / or the part of the flexible circuit board 3 located inside the cylindrical shaft 1 are fixedly connected to the fixing strip 7, the fixing strip 7 connected to the first connecting strip 5 is inserted into the part of the flexible circuit board 3 located inside the cylindrical shaft 1, and the fixing strip 7 connected to the part of the flexible circuit board 3 located inside the cylindrical shaft 1 is inserted into the first connecting strip 5.

[0050] In this embodiment, the fixing block 7 connected to the first connecting strip 5 is inserted into the flexible circuit board 3, or the fixing block 7 connected to the flexible circuit board 3 is inserted into the first connecting strip 5. Thus, the fixing block 7 can connect the first connecting strip 5 and the flexible circuit board 3, thereby strengthening the connection between the flexible circuit board 3 and the cylindrical shaft 1 and reducing the possibility of electrical connection failure caused by relative movement between the flexible circuit board 3 and the cylindrical shaft 1 during the rolling and sliding process of the module screen 2.

[0051] In one possible implementation, such as Figure 1 As shown, the first connecting strip 5 and the second connecting strip 6 are parallel to each other. The side of the first connecting strip 5 closest to the flexible circuit board 3 abuts against the flexible circuit board 3, and the side of the second connecting strip 6 closest to the flexible circuit board 3 abuts against the flexible circuit board 3.

[0052] In this embodiment, both the first connecting strip 5 and the second connecting strip 6 abut against the flexible circuit board 3. This reduces the possibility of repeated collisions between the first connecting strip 5 and the second connecting strip 6 and the flexible circuit board 3 during the rolling and sliding process of the module screen 2, thereby reducing the possibility of damage to the flexible circuit board 3 and improving the lifespan of the display device.

[0053] In one possible implementation, such as Figure 1 As shown, the first arc-shaped plate 11 is close to the end face of the flexible circuit board 3. Figure 1 a) and the side of the first connecting strip 5 near the flexible circuit board 3 ( Figure 1 (b) On the same plane, the second arc-shaped plate 12 is close to the end face of the flexible circuit board 3. Figure 1 c) and the side of the second connecting strip 6 near the flexible circuit board 3 ( Figure 1 d) are on the same plane.

[0054] In this embodiment, since the first connecting strip 5 and the second connecting strip 6 are located on both sides of the flexible circuit board 3, and the end face of the first arc plate 11 near the flexible circuit board 3 and the end face of the second arc plate 12 near the flexible circuit board 3 are located on both sides of the flexible circuit board 3, and the end face of the first arc plate 11 near the flexible circuit board 3 is on the same plane as the side face of the first connecting strip 5 near the flexible circuit board 3, and the end face of the second arc plate 12 near the flexible circuit board 3 is on the same plane as the side face of the second connecting strip 6 near the flexible circuit board 3, the structure on both sides of the flexible circuit board 3 can be made flatter, which can reduce the possibility of damage to the flexible circuit board 3 during the rolling and sliding process of the module screen 2. It can also minimize the occurrence of large relative movement between the flexible circuit board 3 and the cylinder shaft 1 caused by the structure on both sides of the flexible circuit board 3 during the rolling and sliding process of the module screen 2, thereby causing the electrical connection failure of the flexible circuit board 3.

[0055] Optionally, the winding of the module screen 2 outside the cylindrical shaft 1 can be less than one turn, equal to one turn, or greater than one turn; this embodiment of the application does not limit this.

[0056] In one possible implementation, such as Figure 6 As shown, the module screen 2 is wound around the cylindrical shaft 1 more than once. Figure 6 Only a portion of the module screen 2 is shown in the image. Based on this, the winding starting end 21 of the module screen 2 is connected to the first end of the first arc plate 11, that is, the limiting strip 211 is inserted into the first end of the first arc plate 11. The first circumference of the module screen 2 winding around the cylindrical shaft 1 starts from the first end of the first arc plate 11, winds along the first arc plate 11 to the second end of the first arc plate 11, and then winds to the second arc plate 12. The first end and the second end of the first arc plate 11 are the two ends of the first arc plate 11 along the circumference of the cylindrical shaft 1, respectively. The sum of the outer diameter of the first arc plate 11 and the thickness of the module screen 2 is equal to the outer diameter of the second arc plate 12. Figure 6 As shown, d1 is the outer diameter of the first arc plate 11, h2 is the thickness of the module screen 2, d2 is the outer diameter of the second arc plate 12, and d1+h2=d2.

[0057] In this embodiment, the sum of the outer diameter of the first arc plate 11 and the thickness of the module screen 2 is equal to the outer diameter of the second arc plate 12. As a result, when the module screen 2 is wound around the cylinder shaft 1 for the second time, the connection between the winding start end 21 of the module screen 2 on the cylinder shaft 1 and the second arc plate 12 is relatively smooth, with almost no protrusions or depressions. This can minimize the risk of the module screen 2 being pushed up by the first ring of screen body during the second ring, which could cause abnormal display and touch control of the module screen 2. This improves the flatness of the module screen 2, reduces creases, and optimizes the display effect of the display device.

[0058] This application embodiment also provides a display terminal, which includes a terminal device body and a display device disposed on the terminal device body. The display device can be the display device as described above.

[0059] An exemplary display terminal includes a terminal device body and a display device. The display device is disposed on the terminal device body and electrically connected to the terminal device body. The display device is the same as the display device described in the foregoing embodiments, used to display static or dynamic images.

[0060] For example, the above-mentioned display terminal can be implemented in the form of various electronic devices such as mobile phones, tablet computers, handheld computers, and PADs.

[0061] The above embodiments are only used to illustrate the embodiments of this application, and are not intended to limit the embodiments of this application. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the embodiments of this application. Therefore, all equivalent technical solutions also fall within the scope of the embodiments of this application, and the patent protection scope of the embodiments of this application should be defined by the claims.

Claims

1. A display device, characterized in that, include: Cylindrical shaft, module screen, and flexible circuit board; The module screen is wound around the cylindrical shaft, and the starting end of the winding of the module screen is connected to the cylindrical shaft; The flexible circuit board passes through the wall of the cylindrical shaft, and one end of the flexible circuit board located outside the cylindrical shaft is connected to the winding start end of the module screen. The part of the flexible circuit board located inside the cylindrical shaft is inserted and engaged with the cylindrical shaft. The cylindrical shaft includes two arc-shaped plates; The cylindrical shaft is provided with a first connecting strip and a second connecting strip that are connected to each other. The first connecting strip is connected to the first arc plate of the two arc plates, and the second connecting strip is connected to the second arc plate of the two arc plates. The first connecting strip is connected to a first plug that is inserted into the second connecting strip, and / or the second connecting strip is connected to a second plug that is inserted into the first connecting strip; The first connecting strip and the second connecting strip are respectively located on both sides of the flexible circuit board; The first connecting strip and / or the portion of the flexible circuit board located inside the cylindrical shaft are connected to a fixing block. The fixing block connected to the first connecting strip is inserted into the portion of the flexible circuit board located inside the cylindrical shaft, and the fixing block connected to the portion of the flexible circuit board located inside the cylindrical shaft is inserted into the first connecting strip.

2. The apparatus according to claim 1, characterized in that, The first connecting strip and the second connecting strip are parallel to each other. The side of the first connecting strip closest to the flexible circuit board abuts against the flexible circuit board, and the side of the second connecting strip closest to the flexible circuit board abuts against the flexible circuit board.

3. The apparatus according to any one of claims 1-2, characterized in that, The end face of the first arc-shaped plate near the flexible circuit board and the side face of the first connecting strip near the flexible circuit board are on the same plane, and the end face of the second arc-shaped plate near the flexible circuit board and the side face of the second connecting strip near the flexible circuit board are on the same plane.

4. The apparatus according to claim 1, characterized in that, The module screen is wound around the cylindrical shaft more than once. The starting end of the winding of the module screen is connected to the first end of the first arc plate. The first turn of the module screen winding around the cylindrical shaft starts from the first end of the first arc plate, winds along the first arc plate to the second end of the first arc plate, and then winds to the second arc plate. The sum of the outer diameter of the first arc-shaped plate and the thickness of the module screen is equal to the outer diameter of the second arc-shaped plate.

5. The apparatus according to claim 1, characterized in that, The starting end of the winding of the module screen is connected to a limiting strip, which is inserted into the cylindrical shaft.

6. The apparatus according to claim 5, characterized in that, A glue groove is provided on the cylindrical shaft near the starting end of the winding of the module screen; At least a portion of the limiting strip is located within the adhesive groove, and the adhesive groove is provided with an adhesive that adheres to the inner wall of the adhesive groove, the winding start end of the module screen, and the limiting strip.

7. The apparatus according to claim 5 or 6, characterized in that, The module screen includes a protective layer, a touch display screen, and a support layer, with the touch display screen located between the protective layer and the support layer; The limiting strip is connected to the support layer; The flexible circuit board is electrically connected at one end outside the cylindrical shaft to the touch display screen at the starting end of the winding of the module screen.

8. A display terminal, characterized in that, The display terminal includes a terminal device body and a display device as described in any one of claims 1-7 disposed on the terminal device body.

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