Display device and display terminal

Abstract

The application relates to a display device and a display terminal, wherein the display device comprises a flexible display panel, the flexible display panel comprises a plurality of panel bending parts in annular distribution; a cover plate, the cover plate comprises an inner wall and an outer wall arranged on one side of the inner wall, the inner wall comprises a plurality of cover plate bending parts in annular distribution; wherein: each cover plate bending part is matched with a corresponding panel bending part. The application can realize full-curved surface display in multiple directions by arranging the cover plate similar to a bottle cap, arranging the plurality of cover plate bending parts in annular distribution on the inner wall of the cover plate, and matching the flexible display panel with the cover plate.

Description

Technical Field

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

[0002] With the continuous innovation and development of AMOLED display technology, wearable applications are becoming more and more widespread, and the application forms of mobile phones, wristbands and watches are becoming more and more diverse. However, curved screens or "bottle cap screens" have many limitations and there has never been a perfect solution.

[0003] Currently, curved screens in the wearable market mainly adopt two methods: 3D CG and splicing display. Among them, the 3D CG method uses three-dimensional processing, with a flat structure at the bottom of the screen and a curved structure at the top. The splicing display method splices a flat display screen with other display components (such as a light strip composed of LEDs). The flat display area can display images normally, but the curved display area around the flat display area (similar to the side of a bottle cap) can only display fixed graphic logos. Summary of the Invention

[0004] In view of this, this application proposes a display device and display terminal that can perform curved bonding of a flexible display panel and a cover plate, improve the wrinkle problem of flexible display panel bonding, and realize a fully curved screen for multi-directional display.

[0005] According to one aspect of this application, a display device is provided, the display device comprising: a flexible display panel, the flexible display panel including a plurality of panel bending portions distributed in a ring; a cover plate, the cover plate including an inner wall and an outer wall disposed on one side of the inner wall, the inner wall including a plurality of cover plate bending portions distributed in a ring; wherein: each of the cover plate bending portions is respectively attached to the corresponding panel bending portion.

[0006] Furthermore, the cover plate bending portion includes a first cover plate bending surface and a second cover plate bending surface. The first cover plate bending surface and the second cover plate bending surface each include multiple edges. The first cover plate bending surface and the second cover plate bending surface of the same cover plate bending portion are provided with a common edge shared by the first cover plate bending surface and the second cover plate bending surface.

[0007] Furthermore, each of the first and second cover plate bending surfaces includes a non-common edge and a common edge, and the first and second cover plate bending surfaces of the plurality of cover plate bending portions are staggered to form a sawtooth shape.

[0008] Furthermore, both the first and second bent surfaces of the cover plate are planar, wherein the non-common edges of the first bent surface of the cover plate are straight lines.

[0009] Further, the first cover plate bending surface and the second bending surface are both curved surfaces, wherein the non-common edges of the first cover plate bending surface are all curved lines.

[0010] Further, the cover plate further comprises a reflective grating or a micro-prism, which is arranged between the inner wall of the cover plate and the outer wall of the cover plate.

[0011] Further, the reflective grating comprises a grating base and a plurality of score lines, which are arranged on the grating base in a spaced manner, and the grating base is arranged along the direction of the inner wall.

[0012] Further, the micro-prism comprises a plurality of triangular prisms, which are arranged along the direction of the inner wall.

[0013] Further, the display panel further comprises a plurality of light emitting components, which are arranged on the plurality of panel bending portions respectively.

[0014] According to another aspect of the present application, a display terminal is provided, which comprises the display device.

[0015] By arranging a cover plate similar to a "bottle cap" and arranging a plurality of cover plate bending portions in a ring-shaped distribution on the inner wall of the cover plate, the flexible display panel can be curvedly attached to the cover plate according to the aspects of the present application, the wrinkle problem of the flexible display panel attachment can be improved, and a full-curved screen for multi-directional display can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0016] The technical solutions and other beneficial effects of the present application will be apparent from the following detailed description of the specific embodiments of the present application, combined with the accompanying drawings.

[0017] Figure 1 A plan view of the flexible display panel attached to the cover plate according to the embodiments of the present application is shown.

[0018] Figure 2 A cross-sectional view of the first display device according to the embodiments of the present application is shown.

[0019] Figure 3 A front view of the first display device according to the embodiments of the present application is shown.

[0020] Figure 4 A plan view of the second display device according to the embodiments of the present application is shown.

[0021] Figure 5 A cross-sectional view of the second display device according to the embodiments of the present application is shown. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort fall within the protection scope of the present application.

[0023] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0024] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection or can communicate with each other; it can be direct connection, or indirect connection through intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to the same reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, the present application provides various specific examples of processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials. In some examples, methods, means, elements and circuits well known to those skilled in the art are not described in detail, in order to highlight the main idea of the present application.

[0026] The application mainly provides a display device, which comprises a flexible display panel, the flexible display panel comprising a plurality of panel bending parts in annular distribution; a cover plate, the cover plate comprising an inner wall and an outer wall arranged on one side of the inner wall, the inner wall comprising a plurality of cover plate bending parts in annular distribution; wherein: each of the cover plate bending parts is fitted with the corresponding panel bending part.

[0027] Compared with the curved screen in the prior art, the application can realize the curved fitting of the flexible display panel and the cover plate by arranging the cover plate similar to a "bottle cap" and arranging the plurality of cover plate bending parts in annular distribution on the inner wall of the cover plate, improve the wrinkle problem of the flexible display panel fitting, and realize the full curved screen of multi-direction display.

[0028] Among them, the flexible display panel of the application can be a whole flat display panel before fitting. Since the flexible display panel can be flat before fitting, the cover plate is designed as a structure similar to a "bottle cap", and when the flexible display panel is fitted with the cover plate, the flat flexible display panel can be folded into the cover plate according to the structure of the cover plate, so as to realize the curved fitting of the flexible display panel and the cover plate. At the same time, since the inner wall of the cover plate is provided with a plurality of cover plate bending parts in annular distribution, the influence of the wrinkle problem can be offset during the fitting of the flexible display panel and the cover plate, so that the wrinkle problem of the flexible display panel is improved.

[0029] Figure 1 A top view of the flexible display panel and the cover plate of the embodiment of the application is shown.

[0030] Referring to Figure 1 , the flexible display panel 1, the cover plate 2 and the display device 3 formed after the flexible display panel 1 and the cover plate 2 are fitted are all presented in the angle of a top view. The flexible display panel 1 can be fitted into the cover plate 2 and embedded with the cover plate 2 in structure, so as to form the display device 3.

[0031] Among them, for the flexible display panel 1, the flexible display panel can be rolled into a shape similar to a cylinder from a flat whole surface shape before fitting, the boundary 11 of the flexible display panel can be circular, the pre-folding line 12 represents the line after the boundary 11 is folded inward, the pre-folding line 12 and the boundary 11 form a pre-folding area, and the pre-folding line 12 can be polygonal.

[0032] In Figure 1In the middle, for the cover plate 2, the outer wall 21 of the cover plate 2 can be circular, representing a smooth two-dimensional plane, which can be an inclined plane at an angle to the direction perpendicular to the paper plane, or a plane or curved surface perpendicular to the paper plane. The inner wall 22 of the cover plate 2 can be a polygon arranged in a ring shape, corresponding to the pre-folding line 12 of the flexible display panel. The transition line 23 can be circular, representing the inner boundary of the inner wall 22.

[0033] In the process of adhering the flexible display panel 1 to the cover plate 2, the flexible display panel 1 can be folded along the pre-folding line 12, then adhered between the transition line 23 and the outer wall 21 of the cover plate, and correspond to the inner wall 22 of the cover plate, thereby forming a display device 3. It is worth noting that the display device 3 can also include other components, so for the display device 3, a gap can be provided between the pre-folding line 12 and the outer wall 21.

[0034] In one example, the flexible display panel can be an OLED display panel. Of course, for other types of display panels such as LCD, the structure of the display device and the light emitting line can be adjusted accordingly on the basis of the inventive concept of the present application as needed. It can be understood that the present application does not limit the type of flexible display panel.

[0035] Figure 2 A cross-sectional view of a first display device according to an embodiment of the present application is shown.

[0036] As shown in Figure 2 , a cross-section along a fixed position of the display device 3 in Figure 1 is taken to obtain a cross-sectional view of the display device from a top perspective. In Figure 2 , the flexible display panel can include a plurality of panel bending portions arranged in a ring shape, and each of the panel bending portions can include a first panel bending surface 121 and a second panel bending surface 122. The first panel bending surface 121 and the second panel bending surface 122 are connected at a predetermined angle. For example, the direction of the first panel bending surface 121 is from the lower left to the upper right of Figure 2 , and the direction of the second panel bending surface 122 is from the upper left to the lower right of Figure 2 . In Figure 2 , two adjacent panel bending portions can form an M-shaped structure as shown in Figure 2 .

[0037] Further, as shown in Figure 2As shown, the cover plate comprises an inner wall and an outer wall arranged on one side of the inner wall, the inner wall comprises a plurality of cover plate bending portions distributed in a ring shape, each of the cover plate bending portions can comprise a first cover plate bending surface 221 and a second cover plate bending surface 222. The first cover plate bending surface 221 and the second cover plate bending surface 222 are connected at a preset included angle. The inner wall can have the same trend as the flexible display panel, each of the first cover plate bending surfaces can be fitted with the corresponding first panel bending surface, and each of the second cover plate bending surfaces can be fitted with the corresponding second panel bending surface.

[0038] Continuing to refer to Figure 2 , the outer wall can further comprise a first outer wall 211, a second outer wall 212 and a third outer wall 213. Among them, the first outer wall 211 and the third outer wall 213 can jointly form the inner side of the outer wall, and the second outer wall 212 can be the outer side of the outer wall. The second outer wall 212 can be a curved surface, corresponding to 21 in Figure 1 . The first outer wall 211 can also comprise a plurality of outer wall bending portions distributed in a ring shape and arranged along the trend of the inner wall or the flexible display panel. The third outer wall 213 can be the joint of the first outer wall 211 and the third outer wall 213, and the third outer wall 213 can be a straight line. It should be noted that Figure 2 , the straight line of the third outer wall in Figure 2 can also represent a tangent line, which schematically represents the structure of the outer wall. In actual application, when the outer wall is arranged in a 360-degree ring, the third outer wall 213 does not exist. For Figure 2 , the first outer wall 211, the second outer wall 212 and the third outer wall 213 can jointly define the boundary of the outer wall.

[0039] Further, the first cover plate bending surface and the second cover plate bending surface respectively comprise a plurality of edges, and the first cover plate bending surface and the second cover plate bending surface of the same cover plate bending portion are provided with a common edge shared by the first cover plate bending surface and the second cover plate bending surface.

[0040] Figure 3 A front view of a first display device according to an embodiment of the present application is shown.

[0041] Referring to Figure 3, each of the first cover plate bending surface and the second cover plate bending surface comprises a non-common edge and a common edge, and the first cover plate bending surface and the second cover plate bending surface of the plurality of cover plate bending parts are staggered to form a zigzag shape. For example, the first cover plate bending surface 221 can comprise a non-common edge 2211, a non-common edge 2212 and a common edge 2213, and the second cover plate bending surface 222 can comprise a non-common edge 2221, a non-common edge 2222 and a common edge 2213. The common edge 2213 is the common edge of the first cover plate bending surface 221 and the second cover plate bending surface 222. In one example, the first cover plate bending surface and the second cover plate bending surface can both be rhombic.

[0042] In combination Figure 2 and Figure 3 It can be seen that in addition to the cover plate comprising an inner wall and an outer wall arranged on one side of the inner wall, the cover plate can further comprise a top surface 214 and a bottom surface defined by the first outer wall 211, the second outer wall 212 and the third outer wall 213. The planar structure of the top surface 214 can be the same as that of the bottom surface, i.e. both are defined by the first outer wall, the second outer wall and the third outer wall. The total area of the bottom surface can be greater than that of the top surface, so that the entire cover plate forms a shape similar to a circular truncated cone. The top surface and the bottom surface can be flat or convex or concave curved surfaces. The outer surface of the outer wall of the cover plate can be a smooth curved surface, and the inner surface of the outer wall of the cover plate can be arranged along the direction of the inner wall.

[0043] Further, the first cover plate bending surface and the second cover plate bending surface of the plurality of cover plate bending parts are staggered to form a zigzag shape. The size of the first cover plate bending surface can be exactly the same as that of the second cover plate bending surface, and the first cover plate bending surface and the second cover plate bending surface of the plurality of cover plate bending parts can be uniformly distributed in a ring shape. Of course, the size of the first cover plate bending surface and the size of the second cover plate bending surface can also be arranged as needed, and the first cover plate bending surface and the second cover plate bending surface of the plurality of cover plate bending parts can be arranged in a non-uniform distribution, which is not limited in the present application.

[0044] In this case, the non-common edges of the first cover plate bending surface are straight lines, and the zigzag shape formed by the first cover plate bending surface and the second cover plate bending surface of the plurality of cover plate bending parts can be a triangular zigzag. Figure 1 As can be seen in the triangular zigzag shape, the shape of the pre-folding line 12 and the inner wall of the cover plate can be a polygon in the top view.

[0045] Reference Figure 2 and Figure 3The cover plate further comprises a reflective grating or micro-prism arranged between the inner wall of the cover plate and the outer wall of the cover plate. In the present application, a grating is an optical device, the main structure of which is a plurality of equidistant stripe shapes on a plane. The structure of the shape causes the light to be refracted, diffracted or reflected when propagating. The grating can be composed of a large number of parallel slits with equal width and equal spacing in actual application. Specifically, the grating can be made by engraving a large number of parallel notches on a glass sheet. The notches are opaque parts, and the smooth parts between the notches can be transparent, which are equivalent to a slit. The grating can be a transmission grating and a reflective grating. For example, a refined grating can have several thousand or even tens of thousands of notches within a width of 1 cm. Such a grating that uses transmission light diffraction is called a transmission grating; a grating that uses reflection light diffraction between two notches, such as a surface plated with a metal layer and engraved with a plurality of parallel notches, the smooth metal surface between the two notches can reflect light, which is called a reflective grating.

[0046] In Figure 2 , the reflective grating can comprise a grating substrate 241 and a plurality of notches 242, and the plurality of notches 242 can be spaced apart on the grating substrate 241. For example, the grating substrate 241 can be glass, and the grating substrate 241 is arranged along the direction of the inner wall. The plurality of notches 242 are relatively dense in the first cover plate bending surface and the second cover plate bending surface, and can be relatively sparse at the junction of the first cover plate bending surface and the second cover plate bending surface. Figure 3 In Figure 3 , the plurality of notches 242 can be parallel to the common edge, and the lengths of the plurality of notches can be the same.

[0047] It should be noted that the reflective grating of the embodiments of the present application can also be replaced by a micro-prism. In the present application, the main function of the grating is reflection, and the prism can also achieve similar effects. For example, the micro-prism can comprise a plurality of triangular prisms (not shown in Figure 2 ), which are arranged along the direction of the inner wall to control the light path of the flexible display panel. In the present application, the reflective grating and the micro-prism can also be replaced by other optical devices, as long as they can set a reasonable light path according to the needs, and the present application is not limited.

[0048] As Figure 2As shown, the display panel also includes multiple light-emitting components, which are respectively disposed on the multiple panel bending portions. The light-emitting components can be light-emitting devices such as LEDs. For example, light-emitting component B1 can be disposed on the bending surface 122 of the second panel. The light emitted by light-emitting component B1 passes perpendicularly through the inner wall, is reflected by the reflective grating to form a diverging light path, and then enters the inner side of the outer wall. Since the orientation of the inner side of the outer wall, the orientation of the reflective grating, the orientation of the inner wall, and the orientation of the flexible display panel are the same, the outer wall acts like a convex lens, and the light emitted by light-emitting component B1 is ultimately refracted into a vertically upward light ray L1. The light rays emitted by the multiple light-emitting components ultimately become parallel light rays that are parallel to each other.

[0049] The reflective grating or microprism can be generated using processes such as lamination, coating, vapor deposition, and etching. The refraction angle of the outer wall, the reflection angle of the reflective grating or microprism, and the tortuosity of the display panel can all be adapted and adjusted based on different structural designs to ensure that the light path propagation achieves a normal display effect; this application is not limited to these methods.

[0050] Figure 4 A top view of a second display device according to an embodiment of this application is shown.

[0051] See Figure 4 ,and Figures 1 to 3 Unlike the first type of display device, both the first and second cover plate bending surfaces are curved surfaces, wherein the non-common edges of the first cover plate bending surface are all curves. In this case, the sawtooth shape formed by the first and second cover plate bending surfaces of the plurality of cover plate bending portions can be a wavy sawtooth. Figure 4 As can be seen from the above, when the sawtooth shape is a wavy sawtooth, the shape of the pre-fold line 12 and the inner wall 42 of the cover plate can be a wavy shape similar to a sine wave when viewed from a top angle.

[0052] Figure 5 A cross-sectional view of a second display device according to an embodiment of this application is shown.

[0053] and Figure 2 Similarly, along Figure 4 A cross-section is taken at a fixed position in the display device to obtain a top-view cross-sectional view of the display device. Figure 5 In, with Figure 2Different, the flexible display panel 41, the inner wall 42, the grating base 431 in the reflection grating and the plurality of notches 432, the part of the outer wall 44 opposite to the inner wall 42 are all set as a wave shape, and the wave shapes are the same. The light path emitted by the light emitting component B1 can vertically pass through the arc-shaped inner wall 42 to reach the reflection grating, and then become a divergent light path after being reflected by the reflection grating. The divergent light path reaches the outer wall 44, and since the structure of the outer wall is similar to a convex lens, the final light path is refracted as a vertical upward parallel light L1.

[0054] Of course, in the Figure 5 , the reflection grating can also be replaced by a micro prism. It should be noted that in the present application, the trend of the inner wall can also be set as other shapes such as square wave, and at this time the reflection grating or micro prism can be adjusted according to the actual application, and the present application does not limit the trend of the inner wall.

[0055] In addition, the present application also provides a display terminal, which comprises the display device. The display terminal can comprise a vehicle-mounted device, a mobile phone, a notebook, a tablet, a commercial advertising device, a wearable device display device, a portable display device, etc. It can be understood that the present application does not limit the display terminal.

[0056] In summary, compared with the flat bonding and splicing screen in the prior art, the present application not only can display normally on the flat part of the "bottle cap", but also can display the picture on the side part of the "bottle cap", realizing the design of full-curved screen. Since the full-curved screen needs to be curvedly bonded, there may be a wrinkle problem, so the present application can improve the wrinkle problem by designing a sawtooth-shaped bonding. In addition, the present application can further improve the light emitting path by setting a reflection grating or a prism, thereby improving the display effect of the display device.

[0057] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0058] The display device and the display terminal provided by the embodiments of the present application are described in detail above, and the principles and implementation modes of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the technical solutions and core ideas of the present application; those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display device, characterized by comprising: The display device comprises: a flexible display panel comprising a plurality of panel bending portions distributed in a ring shape; a cover plate comprising an inner wall and an outer wall arranged on one side of the inner wall, the inner wall comprising a plurality of cover plate bending portions distributed in a ring shape, each of the cover plate bending portions comprising a first cover plate bending surface and a second cover plate bending surface, the first cover plate bending surface and the second cover plate bending surface being connected at a preset included angle, and the first cover plate bending surfaces and the second cover plate bending surfaces of the plurality of cover plate bending portions being arranged in a staggered manner to form a zigzag shape; wherein each of the cover plate bending portions is fitted with a corresponding panel bending portion.

2. The display device of claim 1, wherein, The first cover plate bending surface and the second cover plate bending surface each comprise a plurality of edges, and the first cover plate bending surface and the second cover plate bending surface of the same cover plate bending portion are provided with a common edge shared by the first cover plate bending surface and the second cover plate bending surface.

3. The display device of claim 2, wherein, Each of the first cover plate bending surface and the second cover plate bending surface comprises a non-common edge and the common edge.

4. The display device of claim 3, wherein, The first cover plate bending surface and the second cover plate bending surface are both planar, and the non-common edges of the first cover plate bending surfaces are straight lines.

5. The display device of claim 3, wherein, The first cover plate bending surface and the second cover plate bending surface are both curved, and the non-common edges of the first cover plate bending surfaces are curved lines.

6. The display device of claim 1, wherein, The cover plate further comprises a reflective grating or a micro prism, which is arranged between the inner wall of the cover plate and the outer wall of the cover plate.

7. The display device of claim 6, wherein, The reflective grating comprises a grating substrate and a plurality of score lines, the plurality of score lines being arranged on the grating substrate at intervals, and the grating substrate being arranged along the direction of the inner wall.

8. The display device of claim 6, wherein, The micro prism comprises a plurality of triangular prisms, and the plurality of triangular prisms are arranged along the direction of the inner wall.

9. The display device of claim 1, wherein, The display panel further comprises a plurality of light emitting components, which are arranged on the plurality of panel bending portions, respectively.

10. A display terminal, characterized by The display terminal comprises the display device according to any one of claims 1-9.

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