CN115083276A - Cover plate, display panel and display device - Google Patents
Cover plate, display panel and display device Download PDFInfo
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- CN115083276A CN115083276A CN202210711835.2A CN202210711835A CN115083276A CN 115083276 A CN115083276 A CN 115083276A CN 202210711835 A CN202210711835 A CN 202210711835A CN 115083276 A CN115083276 A CN 115083276A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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Abstract
The application provides a cover plate, a display panel and a display device. The cover plate is provided with an inner surface facing the flexible screen body and an outer surface far away from the flexible screen body, and the cover plate is provided with a plane part and a curved surface part adjacent to the plane part; the curved surface part at least comprises a nonlinear curved surface part along the circumferential direction of the plane part; the inner surface of the nonlinear curved surface part is uneven. The cover plate can obviously improve the display quality and the display appearance of the display panel of the curved screen and the display device, and improves the manufacturing yield of the display panel and the display device.
Description
Technical Field
The application relates to a cover plate, a display panel and a display device, and belongs to the technical field of display.
Background
With the continuous development of display technology, the flexible screen is widely applied to mobile phones, flat panels and other display devices, the flexible screen is curved, so that the display area can be increased, the mastering hand feeling of an operator is improved due to the fact that the flexible screen conforms to human engineering mechanics, and the curved screen is pursued by markets and users as a new trend.
The curved screen comprises a hyperbolic screen and a four-curved screen, wherein the hyperbolic screen is that the display areas of the screen body at two opposite sides are provided with 3D curved arc edges, and the four-curved screen is that the whole outer edge display area of the screen body is the 3D curved arc edges. Taking the rectangular screen body as an example, when the edge of the periphery of the rectangular screen body is curved, the four corners of the screen body inevitably generate irregular folded structures, and the folded structures not only can make the screen body and the cover plate difficult to be tightly attached, but also can generate the defect of poor display.
Disclosure of Invention
The embodiment of the application provides an apron, through making this apron have the internal surface of the orientation screen body of part unevenness, when apron and flexible screen body laminating, the bending stress when can effectively release the flexible screen body curved surface to guarantee the high laminating of apron and flexible screen body, thereby improved the demonstration of curved surface screen bad and the outward appearance is bad, improves and shows the quality.
The embodiment of the application also provides a display panel, which comprises the cover plate and the screen body. In the manufacturing process of the display panel, the bending stress generated when the flexible screen body is curved can be released by the partially-uneven inner surface of the cover plate, and the cover plate and the flexible screen body are highly attached, so that the display panel has excellent display appearance and display quality, and the manufacturing yield is high.
The embodiment of the application also provides a display device, which comprises the display panel, so that the display device has excellent display appearance and display quality and high manufacturing yield.
The application provides a cover plate, which is used for covering a flexible screen body, wherein the cover plate is provided with an inner surface facing the flexible screen body and an outer surface far away from the flexible screen body, and the cover plate is provided with a plane part and a curved surface part adjacent to the plane part; the curved surface part at least comprises a nonlinear curved surface part along the circumferential direction of the plane part;
the inner surface of the nonlinear curved surface part is uneven.
In the cover plate, optionally, along the circumferential direction, the inner surface of the nonlinear curved surface portion includes convex portions and concave portions arranged at intervals, wherein the convex direction of the convex portions points to the inner surface, and the concave direction of the concave portions points to the outer surface.
In the above-described cover plate, optionally, one end of the concave portion is located at an outer edge of the inner surface, and the other end of the concave portion extends toward the planar portion; one end of the convex part is positioned at the outer edge of the inner surface, and the other end of the convex part extends towards the plane part;
optionally, the convex portion and the concave portion each extend in a radial direction.
In the above-described cover plate, optionally, in the same circumferential direction, a protrusion height of the convex portion and a depression depth of the concave portion are equal.
In the cover plate described above, optionally, in a direction from the curved surface portion to the flat surface portion, a convex height of each of the convex portions is gradually reduced, and a concave depth of each of the concave portions is gradually reduced;
optionally, the rate of decrease of the height of the protrusions is the same as the rate of decrease of the depth of the recesses.
In the above-described cover plate, optionally, the curved surface portion and the flat surface portion smoothly transition at a junction between the flat surface portion and the curved surface portion.
In the cover plate, optionally, the flat portion is circular, wherein the concave portions and the convex portions arranged adjacently at intervals are radially distributed on the inner surface of the curved portion with the circular points of the flat portion as the center;
optionally, the total length of the concave and convex portions in the circumferential direction of the outer edge of the inner surface is L 1 The circumference of the curved surface part is L 2 ，
L 2 ≤L 1 ≤1.2L 2 。
In the cover plate, optionally, the nonlinear curved surface portion includes at least one corner region, and the concave portions and the convex portions are adjacently arranged at intervals on an inner surface of the corner region;
optionally, the total length of the concave and convex portions of each corner region in the circumferential direction of the outer edge of the inner surface is L 1 The length of the arc outer edge of the corner area is L 2 ，
L 2 ≤L 1 ≤1.2L 2 ；
The embodiment of the application also provides a display panel, which comprises the cover plate and a screen body.
The application also provides a display device which comprises the display panel.
According to the cover plate, the non-linear curved surface part is provided with the uneven inner surface, so that the uneven inner surface can guide the flexible screen body to generate folds matched with the flexible screen body in the process that the flexible screen body is attached to the cover plate to perform curved surface treatment on the flexible screen body, and the cover plate can be attached to the flexible screen body in a high degree; and the uneven inner surface is beneficial to effectively releasing the bending stress of the flexible screen body, and the damage of the flexible screen body caused by overlarge bending stress is avoided. Therefore, the cover plate is beneficial to improving the display effect and the appearance effect of the display panel and the display device, and the manufacturing yield of the display panel and the display device is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of an inner surface of a first cover plate according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of the structure of FIG. 1 in the direction A-A;
FIG. 3 is a schematic view of the structure of FIG. 1 in the direction B-B;
fig. 4 is a schematic structural view of a flexible screen body provided in the embodiment of the present application before being attached to a cover plate;
FIG. 5 is a schematic view of a portion of the edge of the cover plate shown in FIG. 1;
FIG. 6 is a second schematic view of FIG. 1 taken along line A-A;
FIG. 7 is a third schematic view of FIG. 1 taken along line A-A;
fig. 8 is a schematic structural diagram of an inner surface of a second cover plate according to an embodiment of the present disclosure.
Reference numerals:
100-a cover plate; 100 a-inner surface 100 b-outer surface
10-plane part; 1 a-a recess; 1 b-convex part
200-flexible screen body 20-curved surface part; 20 a-a non-linear curved surface portion;
20 b-straight curved face; 2-cornering apex; 3-arc outer edge;
a-the outer rim; b-adjacent.
Detailed Description
As described in the background art, in the related art, when a quadric-curved screen is manufactured, a flexible screen body and a cover plate need to be attached, in the attaching process, a non-linear portion in the circumferential direction of the flexible screen body generates a large bending deformation relative to a linear portion in the circumferential direction of the flexible screen body, and not only is the generation of a large bending stress accompanied, but also the phenomenon that the cover plate and the flexible screen body are not well attached to each other to generate bubbles occurs. More seriously, when the stress of the folded structure is too large, the flexible screen body at the position can be broken to further cause the damage of the whole screen body, so that the manufacturing yield of the display panel is influenced.
To above-mentioned technical problem, this application embodiment provides an apron, and the curved surface portion through the non-linearity that makes the apron has unevenness's internal surface, and at the in-process of the flexible screen body and the laminating of apron, unevenness's internal surface can guide the flexible screen body to produce the fold rather than the adaptation to the bending stress of effective dispersion fold production in-process makes the stress evenly distributed of fold department. Therefore, the laminating effect of the cover plate and the flexible screen body is guaranteed, and the phenomenon of screen body breakage caused by overlarge stress or unbalanced distribution is avoided.
In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Fig. 1 is a schematic structural view of an inner surface of a first cover plate according to an embodiment of the present disclosure, fig. 2 is a schematic structural view of fig. 1 in a direction a-a, fig. 3 is a schematic structural view of fig. 1 in a direction B-B, and fig. 4 is a schematic structural view of a flexible screen body according to an embodiment of the present disclosure before being attached to the cover plate; fig. 5 is a schematic structural diagram of a partial edge of the cover plate shown in fig. 1, and specifically, fig. 5 is a schematic structural diagram of a partial edge under an M viewing angle.
Referring to fig. 1 to fig. 5, in a first aspect, a cover plate 100 is provided for covering a flexible screen body 200, the cover plate 100 has an inner surface 100a facing the flexible screen body 200 and an outer surface 100b away from the flexible screen body, the cover plate 100 has a planar portion 10 and a curved portion 20 adjacent to the planar portion 10; the curved surface portion 20 includes at least a nonlinear curved surface portion 20a in the circumferential direction of the planar portion 10; the inner surface 100a of the nonlinear curved surface portion 20a is uneven.
The cover sheet 100 of the present application includes a flexible screen body 200 having an inner surface 100a and an outer surface 100b disposed opposite each other, wherein the inner surface 100a is configured to face the flexible screen body 200 and ultimately conform to the flexible screen body 200. Specifically, the cover plate 100 is a curved cover plate, and the curved portion 20 of the curved cover plate is curved toward the inner surface 100 a. The cover plate 100 includes a planar portion 10 and a curved portion 20 adjacent to the planar portion 10, and the curved portion 20 is provided on the periphery of the planar portion 10. It is understood that the flat portion 10 herein means a central portion of the cover plate having a certain thickness and being parallel to the horizontal direction, and the curved portion 20 means an edge portion of the cover plate 100 bent toward the inner surface 100a with respect to the flat portion 10. As shown in fig. 1, the flat portion 10 of the cover plate 100 in the present embodiment is circular, and the curved portion 20 is adjacent to the flat portion 10 and surrounds the outer periphery of the flat portion 10. It can be understood that the entire curved surface portion 20 exhibits the non-linear curved surface portion 20a and is annular, subject to the influence of the circular shape of the flat surface portion 10.
Note that, in the cover plate 100 shown in fig. 1, when the flexible screen body 200 is pressed to be attached to the cover plate 100, the flexible screen body 200 corresponding to the non-linear curved surface portion 20a is subjected to a large bending stress, and thus a wrinkle structure is generated therein. According to the cover plate 100, the inner surface 100a of the nonlinear curved surface part 20a presents an uneven appearance, so that in the attaching process, on one hand, the uneven inner surface 100a can guide the flexible screen body 200 to generate wrinkles matched with the flexible screen body 200, so that the cover plate 100 and the flexible screen body 200 can be attached at high height, and the problem of bubble generation caused by gaps between the flexible screen body 200 and the cover plate 100 is remarkably reduced or eliminated; on the other hand, the uneven inner surface 100a can also disperse the bending stress at the wrinkle part adapted to the flexible screen body 200, and improve the balance of stress distribution, thereby avoiding the occurrence of screen body fracture caused by over-large overall or local stress. Therefore, the cover plate 100 of the embodiment of the application is beneficial to realizing the display quality and the appearance quality of the curved display panel, prolonging the service life and improving the manufacturing yield.
Specifically, the inner surface 100a of the nonlinear curved surface portion 20a includes concave portions 1a and convex portions 1b arranged at intervals adjacent to each other in the circumferential direction, wherein the concave direction of the concave portions 1a is directed to the outer surface 100b, and the convex direction of the convex portions 1b is directed to the inner surface 100 a.
In the inner surface 100a of the nonlinear curved surface portion 20a, the convex portions 1b and the concave portions 1a arranged adjacently at intervals cause the inner surface 100a of the nonlinear curved surface portion 20a to assume an uneven state in which, in the thickness direction of the cover plate 100, the concave direction of the concave portions 1a is directed to the outer surface and the convex direction of the convex portions 1b is directed to the inner surface.
The present application does not limit the specific number of the concave portions 1a and the convex portions 1b, and may be one or more, and it can be understood that, when the inner surface 100a of the nonlinear curved surface portion 20a has a plurality of concave portions 1a and convex portions 1b spaced apart in the circumferential direction, the attachment of the cover plate 100 and the flexible screen body 200 is more tight, and it is more advantageous to disperse the stress generated by the bending of the nonlinear curved surface portion 20 a.
The concave part 1a and the convex part 1b can guide the flexible screen body 200 to generate concave-convex regular wrinkles matched with the flexible screen body, so that the flexible screen body 200 and the cover plate 100 can be highly attached, and further promotion effect on stress dispersion and balance is achieved. In order to release the stress generated by bending the flexible screen body 200 to the maximum and further ensure the uniform distribution of the stress, both the concave edge of the concave portion 1a and the convex edge of the convex portion 1b in the present application may be circular arc-shaped.
In a possible realization, one end of the recess 1a is located at the outer edge a of the inner surface 100a, and the other end of the recess 1a extends towards the planar portion 10; one end of the convex portion 1b is located at the outer edge a of the inner surface 100a, and the other end of the convex portion 1b extends toward the planar portion 10.
The outer edge of the inner surface 100a referred to in the present application refers to the outer edge a of the curved surface portion 20 farthest from the planar portion 10. It is understood that the initial end surface of the concave portion 1a is located at the outer edge a and extends toward the planar portion 10, so that the concave portion 1a has a certain length in the direction, that is, in the direction in which the outer edge a faces the planar portion 10, a plurality of concave surfaces are sequentially arranged and combined to form the concave portion 1 a; the starting end surface of the convex portion 1b extends toward the planar portion 10 at the outer edge a so that the convex portion 1b has a certain length in the direction, i.e., a plurality of convex surfaces are combined in turn as the convex portion 1b in the direction in which the outer edge a faces the planar portion 10.
It is understood that the flexible screen 200 corresponding to the non-linear curved surface portion 20a is subjected to greater stress during the lamination process than the flexible screen 200 corresponding to the linear curved surface portion 20b, and the flexible screen 200 of the outer edge a has greater bending stress in the flexible screen 200 corresponding to the non-linear curved surface portion 20 a. Therefore, by extending one end of the concave portion 1a and the convex portion 1b to the outer edge a of the curved surface portion 20 farthest from the curved surface portion 10, the advantage of the concave portion 1a and the convex portion 1b in releasing the bending stress can be exhibited to the maximum, and the stress at the outer edge a and the adjacent portion b of the curved surface portion 20 of the flexible screen body 200 can be released as much as possible.
In the embodiment of fig. 1 in particular, one end of the recess 1a starts from the outer edge a and the other end extends towards the planar portion 10 up to the abutment b of the planar portion 10 and the curved portion 20; one end of the convex portion 1a starts from the outer edge a, and the other end extends toward the flat portion 20 up to the abutment b of the flat portion 10 and the curved portion 20.
Further, the extending direction of the concave portion 1a and the convex portion 1b coincides with the radial direction.
In order to ensure the stress dispersion and the stress balance effect, the width of the orthographic projection of the concave portion 1a on the plane of the plane portion 10 is equal everywhere along the radial direction of the plane portion 10, and the width of the orthographic projection of the convex portion 1b on the plane of the plane portion 10 is equal everywhere along the radial direction of the plane portion 10, wherein the "width" herein refers to the extension length perpendicular to the radial direction. Further, the widths of the orthogonal projections of each of the concave portion 1a and the convex portion 1b on the plane of the planar portion 10 are equal.
In one possible implementation, the projection height H1 of the projection 1b and the recess depth H2 of the recess 1a are equal in the same circumferential direction.
Specifically, in the circumferential direction D1 in which the outer edge a is located, the projection height H1 of each projection 1b and the depression depth H2 of each recess 1a are equal. At this time, in the circumferential direction D1, the convex portions 1b and the concave portions 1a which are spaced and adjacently disposed form a complete and symmetrical peak and valley, so that the stress in the circumferential direction can be sufficiently released, and the probability of the screen body breaking can be reduced.
Further, in the direction along the curved surface portion 20 to the planar portion 10, the projection height H1 of the convex portion 1b and the depression depth H2 of the concave portion 1a are each gradually reduced.
Fig. 6 is a second structure diagram of fig. 1 in the direction of a-a, and a convex portion is taken as an example for explanation. In the direction along the curved surface portion 20 to the planar portion 10 (i.e., the extending direction of the convex portion 1 b), the convex height of the convex portion 1b in the circumferential direction D1 at the outer edge a is larger than the convex height of the convex portion 1b in the circumferential direction D2, and the convex height of the convex portion 1b in the circumferential direction D2 is larger than the convex height of the convex portion 1b in the circumferential direction D3. The reason is that the radius of the screen body gradually decreases while extending from the outer edge a of the curved surface portion 20 to the flat surface portion 10, and therefore, when the height of the projection of the convex portion 1b gradually decreases while extending, the curved surface portion more conforms to the tendency of bending of the non-linear curved surface portion 20a, and the dispersion and the balance of the stress are more favorably promoted.
Likewise, in the direction along the curved surface portion 20 to the planar portion 10 (i.e., the extending direction of the recessed portion 1 a), the recessed depth of the recessed portion 1a in the circumferential direction D1 at the outer edge a is larger than the recessed depth of the recessed portion 1a in the circumferential direction D2, and the recessed depth of the recessed portion 1a in the circumferential direction D2 is larger than the recessed depth of the recessed portion 1a in the circumferential direction D3. The reason is that the radius of the screen body gradually decreases while extending from the outer edge a of the curved surface portion 20 to the flat surface portion 10, and therefore, when the depth of the recess 1a gradually decreases while extending, the curved surface portion more conforms to the tendency of the non-linear curved surface portion 20a to bend, which is more advantageous in promoting the dispersion and equalization of stress.
Further, when the reduction rate of the protrusion height H1 and the reduction rate of the depression depth H2 are the same, the structural uniformity of the unevenness of the inner surface 100a corresponding to the nonlinear curved surface portion 20a is higher, and the cover plate 100 is more advantageous for the generation guide of wrinkles and the stress dispersion and equalization of the flexible screen body 200.
In one possible implementation, the curved surface portion 20 and the flat surface portion 10 smoothly transition at the abutment b of the flat surface portion 10 and the curved surface portion 20.
Taking the convex portion 1b as an example, fig. 7 is a third schematic structural diagram of fig. 1 in the direction of a-a, and compared with fig. 2, fig. 7 shows an embodiment in which the convex portion 1b and the plane portion 10 smoothly transition at the adjacent portion b of the plane portion 10 and the curved surface portion 20.
The smooth transition referred to in the present application means that the depth of depression of the concave portion 1a or the height of projection of the convex portion 1b becomes zero at the abutment b between the flat surface portion 10 and the curved surface portion 20 as the depth of depression of the concave portion 1a and the height of projection of the convex portion 1b gradually decrease in the course of extension.
Compared with the non-smooth transition shown in fig. 2, when the curved surface portion 20 and the flat surface portion 10 are in smooth transition at the adjacent position b between the flat surface portion 10 and the curved surface portion 20, the attachment degree between the cover plate 100 and the flexible screen body 200 is better, the phenomenon of generating bubbles due to the existence of a gap between the cover plate 100 and the flexible screen body is greatly avoided, and the display panel has a better display appearance.
In one possible implementation, as shown in fig. 1, the flat portion 10 of the cover plate 100 in the present embodiment is circular, and as the curved portion 20 provided around the outer periphery of the flat portion 10, the whole curved portion 20 presents a non-linear curved portion 20a and is annular.
In this embodiment, the plurality of concave portions 1a and the plurality of convex portions 1b are radially distributed at intervals on the inner surface 100a of the curved surface portion 20 with a circular point of the planar portion as a center.
Further, the total length L of the concave portion 1a and the convex portion 1b in the circumferential direction of the outer edge a in the curved surface portion 20 1 And the perimeter L of the curved surface portion 20 2 The following relationship is satisfied:
L 2 ≤L 1 ≤1.05L 2 。
at this time, the flexible screen body 200 and the cover plate 100 can be more remarkably tightly attached to the curved surface portion 20, the attaching effect is optimized, the gap between the flexible screen body 200 and the cover plate 100 is reduced or eliminated, and the screen body quality is improved.
Need to make sure thatExplained is that L 1 Is the total length of all the recesses 1a and the protrusions 1b in the circumferential direction D1 in the inner surface of the nonlinear curved surface portion 20. A perimeter L of the curved surface portion 20 2 Refers to the outer perimeter of the curved surface portion 20.
From the above relationship, it can be seen that the circumference L of the curved surface portion 20 is the same 2 After determination, can be based on L 2 The number of the concave portions 1a and the convex portions 1b in the curved surface portion 20, the depth of the concave portions 1a at the outer edge a, and the height of the convex portions 1b are determined.
Specifically, the cover plate 100 as shown in fig. 1 can be used in a mobile or stationary terminal having a circular display screen, such as a smart watch, an advertisement display board, and the like.
The cover plate 100 of the present application may have other embodiments in addition to one embodiment of the cover plate 100 shown in fig. 1. Fig. 8 is a schematic structural diagram of an inner surface of a second cover plate according to an embodiment of the present disclosure. Referring to fig. 8, the planar portion 10 of the cover plate 100 is rectangular, and the curved portion 20 connected to the planar portion 10 and located at the periphery of the planar portion 10 includes, in the circumferential direction: four linear curved surface portions 20b and four nonlinear curved surface portions 20a are adjacently disposed, and the adjacent two linear curved surface portions 20b are connected by the nonlinear curved surface portions 20 a.
Specifically, the non-linear curved surface portion 20a includes at least one corner region (fig. 8 includes 4 corner regions), and a plurality of concave portions 1a and convex portions 1b are adjacently and alternately distributed on an inner surface 100a of the corner region. Specifically, the cornering region comprises a cornering apex 2 and a curved outer edge 3. One end surface of the concave portion 1a and the convex portion 1b is located at the arc-shaped outer edge 3 of the corner region, and the other end surface extends toward the center of the flat portion 10.
Further, the total length L of the concave portion 1a and the convex portion 1b of each corner region at the outer edge a 1 And an arcuate outer edge L of the corner region 2 The following relationship is satisfied: :
L 2 ≤L 1 ≤1.05L 2 。
at this time, the flexible screen body 200 and the cover plate 100 can be more remarkably tightly attached to the curved surface portion 20, the attaching effect is optimized, the gap between the flexible screen body 200 and the cover plate 100 is reduced or eliminated, and the screen body quality is improved.
It is to be construed that L 1 Is the total length of all the recesses 1a and the protrusions 1b in the inner surface of one corner region in the circumferential direction D1. The arc outer edge L 2 Refers to the arc length of the outer arc edge 3 of the corner region.
According to the above relationship, when the arc-shaped outer edge L 2 After determination, can be based on L 2 The number of recesses and projections 1 in the corner region, the depth of depression of the recess 1a at the outer edge, and the height of projection of the projection 1b are determined.
Specifically, the cover panel 100 shown in fig. 8 can be used in a mobile or stationary terminal having a display panel, such as a mobile phone, an ipad, a television, and a notebook computer.
When the cover plate and the flexible screen body are jointed, a jointing device commonly used in the field is needed. Specifically, the inner surface of the cover plate faces the flexible screen body, the attaching device is arranged on one side, away from the cover plate, of the flexible screen body, and the attaching device gradually completes attaching of the flexible screen body and the cover plate in the process of applying pressure to the flexible screen body and enabling the screen body to move towards the inner surface of the cover plate. Because the apron of this application has unevenness's internal surface at nonlinear line shape curved surface portion, consequently, flexible screen body can produce the fold with this structure adaptation under the guide of internal surface structure. The problem that in the prior art, a gap exists between a fold formed by extruding a non-linear area of the quadric-curved screen and a cover plate with a smooth inner surface, so that the four-curved screen is not tightly attached is solved. In addition, the process that the flexible screen body is guided by the cover plate to generate folds is also the process that the cover plate performs dispersion and homogenization treatment on the stress at the folds, so that the bending stress of the flexible screen body in a non-linear area is reduced or eliminated, the occurrence of the fracture phenomenon of the flexible screen body due to overlarge stress or over concentration is avoided, the manufacturing yield of the display panel is improved, the display quality of the display panel is improved, and the service life of the display panel is prolonged.
The material of the cover plate is not limited too much, and glass or other known materials commonly used in the art can be used.
In addition, the present application also does not impose too much limitation on the material of the flexible screen, and in an embodiment, the screen sequentially includes, in the thickness direction, a substrate, an array layer, an encapsulation layer, a polarizing layer, and a touch layer, which are stacked. The packaging layer and the polarizing layer are connected through a first connecting layer, and the polarizing layer and the touch layer are connected through a second connecting layer. When the flexible screen body is attached, the touch layer of the flexible screen body is close to the inner surface of the cover plate. Furthermore, a third connecting layer is arranged on one side, close to the inner surface of the cover plate, of the touch layer, and the third connecting layer is used for connecting the inner surface of the cover plate and the touch layer.
In one embodiment, the first connecting layer, the second connecting layer and the third connecting layer may be all functional layers prepared from optical cement.
A second aspect of the embodiments of the present application provides a display panel, which includes the cover plate 100 and the flexible screen body 200 of the foregoing first aspect.
The structure of the cover plate 100 and the composition of the flexible screen 200 are as described above, and are not described herein again.
The embodiment of the application provides a display panel, set up unevenness's internal surface through the nonlinear line curved surface portion at the apron, make the flexible screen body produce the fold with the laminating in-process of lid with the lid, not only can promote the laminating effect, more can reduce or eliminate the bending stress of the flexible screen body in the nonlinear line district, avoided the flexible screen body because the too big or too concentrated emergence of the fracture phenomenon that leads to of stress, thereby make display panel's appearance quality, display quality, long service life, the preparation yield is showing and is improving.
A third aspect of the embodiments of the present application provides a display device including the above display panel.
The specific display panel has the same composition as described above, and is not described herein again. The specific form of the display device in the embodiments of the present application is not particularly limited, and may include, but is not limited to, a mobile phone, a television, a desktop computer, a notebook computer, an advertisement display screen, a watch, and the like).
The display device comprises the display panel of the application embodiment, so that the display device has excellent performances in aspects of appearance quality, display quality, service life and manufacturing yield.
In the description of the embodiments of the present application, it should be understood that the terms "mounted," "connected," and "connected" are used broadly and can refer to a fixed connection, an indirect connection through intermediary media, communication between two elements, or an interaction between two elements, for example, unless explicitly stated or limited otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. The terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like refer to an orientation or positional relationship indicated in the drawings for convenience in describing the present application and to simplify description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application. In the description of the present application, "a plurality" means two or more unless specifically stated otherwise.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A cover plate for covering a flexible screen body, the cover plate having an inner surface facing the flexible screen body and an outer surface facing away from the flexible screen body, wherein the cover plate has a planar portion and a curved portion adjoining the planar portion; the curved surface part at least comprises a nonlinear curved surface part along the circumferential direction of the plane part;
the inner surface of the nonlinear curved surface part is uneven.
2. The cover sheet according to claim 1, wherein the inner surface of the nonlinear curved surface portion in the circumferential direction comprises convex portions and concave portions arranged adjacently at intervals, wherein the convex direction of the convex portions is directed to the inner surface, and the concave direction of the concave portions is directed to the outer surface.
3. The cover plate according to claim 2, wherein one end of the recess is located at an outer edge of the inner surface, and the other end of the recess extends toward the planar portion; one end of the convex part is positioned at the outer edge of the inner surface, and the other end of the convex part extends towards the plane part;
optionally, the convex portion and the concave portion each extend in a radial direction.
4. The cover sheet according to claim 2 or 3, wherein the convex height of the convex portion and the concave depth of the concave portion are equal in the same circumferential direction.
5. The cover sheet according to claim 4, wherein a convex height of each of the convex portions is gradually reduced and a concave depth of each of the concave portions is gradually reduced in a direction from the curved surface portion to the flat surface portion;
optionally, the rate of decrease of the height of the protrusions is the same as the rate of decrease of the depth of the recesses.
6. The cover panel as claimed in any one of claims 2-5, wherein said curved surface portion and said planar portion smoothly transition at the abutment of said planar portion and said curved surface portion.
7. The cover sheet according to any one of claims 2 to 6, wherein the planar portion has a circular shape, and wherein the concave portions and the convex portions arranged adjacently at intervals are radially distributed on the inner surface of the curved portion with the circular point of the planar portion as the center;
optionally, the total length of the concave and convex portions in the circumferential direction of the outer edge of the inner surface is L 1 The circumference of the curved surface part is L 2 ，
L 2 ≤L 1 ≤1.2L 2 。
8. The decking of any one of claims 2 to 6, wherein the non-linear curved sections include at least one corner region, the concave and convex sections being adjacently spaced apart on an inner surface of the corner region;
optionally, the total length of the concave and convex portions of each corner region in the circumferential direction of the outer edge of the inner surface is L 1 The length of the arc outer edge of the corner area is L 2 ，
L 2 ≤L 1 ≤1.2L 2 。
9. A display panel comprising the cover sheet according to any one of claims 1 to 8 and a flexible screen body.
10. A display device characterized by comprising the display panel according to claim 9.
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| CN202210711835.2A CN115083276B (en) | 2022-06-22 | 2022-06-22 | Cover plate, display panel and display device |
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| CN202210711835.2A CN115083276B (en) | 2022-06-22 | 2022-06-22 | Cover plate, display panel and display device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207264694U (en) * | 2017-08-28 | 2018-04-20 | 云谷（固安）科技有限公司 | A kind of flexible display panels, display device |
| CN208907988U (en) * | 2018-10-31 | 2019-05-28 | 云谷（固安）科技有限公司 | A kind of cover board and flexible screen |
| CN110058647A (en) * | 2019-03-26 | 2019-07-26 | 武汉华星光电半导体显示技术有限公司 | Carry substrate and Flexible Displays mould group |
| CN110379935A (en) * | 2019-07-15 | 2019-10-25 | 云谷（固安）科技有限公司 | The production method of display panel and display panel |
| CN111816083A (en) * | 2020-08-17 | 2020-10-23 | 京东方科技集团股份有限公司 | Flexible display module, flexible display device and manufacturing method |
| CN113448117A (en) * | 2021-06-29 | 2021-09-28 | 云谷（固安）科技有限公司 | Display panel, display device, display panel forming method and cover plate |
| WO2021196909A1 (en) * | 2020-04-03 | 2021-10-07 | Oppo广东移动通信有限公司 | Electronic device, display screen assembly, and display screen cover plate |
| CN114241910A (en) * | 2021-12-17 | 2022-03-25 | 昆山工研院新型平板显示技术中心有限公司 | Cover plate, manufacturing method thereof and display device |
-
2022
- 2022-06-22 CN CN202210711835.2A patent/CN115083276B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207264694U (en) * | 2017-08-28 | 2018-04-20 | 云谷（固安）科技有限公司 | A kind of flexible display panels, display device |
| CN208907988U (en) * | 2018-10-31 | 2019-05-28 | 云谷（固安）科技有限公司 | A kind of cover board and flexible screen |
| CN110058647A (en) * | 2019-03-26 | 2019-07-26 | 武汉华星光电半导体显示技术有限公司 | Carry substrate and Flexible Displays mould group |
| CN110379935A (en) * | 2019-07-15 | 2019-10-25 | 云谷（固安）科技有限公司 | The production method of display panel and display panel |
| WO2021196909A1 (en) * | 2020-04-03 | 2021-10-07 | Oppo广东移动通信有限公司 | Electronic device, display screen assembly, and display screen cover plate |
| CN113497840A (en) * | 2020-04-03 | 2021-10-12 | Oppo广东移动通信有限公司 | Electronic equipment, display screen assembly and display screen cover plate |
| CN111816083A (en) * | 2020-08-17 | 2020-10-23 | 京东方科技集团股份有限公司 | Flexible display module, flexible display device and manufacturing method |
| CN113448117A (en) * | 2021-06-29 | 2021-09-28 | 云谷（固安）科技有限公司 | Display panel, display device, display panel forming method and cover plate |
| CN114241910A (en) * | 2021-12-17 | 2022-03-25 | 昆山工研院新型平板显示技术中心有限公司 | Cover plate, manufacturing method thereof and display device |
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|---|---|
| CN115083276B (en) | 2023-11-07 |
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