CN115019633A

CN115019633A - Display screen assembly and terminal

Info

Publication number: CN115019633A
Application number: CN202111117297.6A
Authority: CN
Inventors: 刘方成; 熊源; 贺海明; 张言
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-09-06
Anticipated expiration: 2041-09-23
Also published as: CN115019633B

Abstract

The embodiment of the application provides a display screen assembly and a terminal. The display screen assembly comprises a cover plate with a cover plate bending part, a display panel arranged on one side of the cover plate, a supporting structure and a pressing structure. The display panel comprises a display area and a bending area which is bent to one side of the display area, which is far away from the cover plate. The display area comprises a curved surface display area arranged corresponding to the bent part of the cover plate. The bending area comprises a first bending area which is arranged opposite to the curved surface display area. The display area and the bending area are surrounded with an accommodating space. The supporting structure is accommodated in the accommodating space. The support structure includes a first curved surface portion. The two opposite sides of the first curved surface part respectively support against the curved surface display area and the first bending area, and the outlines of the two opposite sides of the first curved surface part are respectively matched with the outlines of the curved surface display area and the first bending area. The first curved surface portion is not of equal thickness. The pressing structure is arranged on one side, far away from the cover plate, of the bending area so as to press the bending area, the supporting structure and the display area tightly.

Description

Display screen assembly and terminal

Technical Field

The application relates to the technical field of display, in particular to a display screen assembly and a terminal.

Background

Generally, a display screen assembly includes a cover plate and a display panel disposed at one side of the cover plate. The terminal bending (pad bending) process is a process of bending a terminal area (also called a bonding area) of the display panel to a side of the display panel away from the cover plate. In the multi-curved-surface display screen assembly, the cover plate comprises a bending part, the display panel needs to be abutted against the bending part of the cover plate through a terminal bending process and bent to one side of the display panel, which is far away from the cover plate, and how to keep the terminal bending process in a good bending form becomes a key for realizing the multi-curved-surface display screen assembly.

Disclosure of Invention

The present application provides in a first aspect a display screen assembly comprising:

the cover plate comprises at least one cover plate bending part;

the display panel is arranged on one side of the cover plate, the cover plate bending part is bent towards one side of the display panel, the display panel comprises a display area and a bending area which is bent from the display area to one side of the display area, which is far away from the cover plate, the display area comprises a curved surface display area which is arranged corresponding to the cover plate bending part, the bending area comprises a first bending area which is arranged opposite to the curved surface display area and a binding area which is connected with the first bending area, and an accommodating space is defined by the display area and the bending area;

the supporting structure is accommodated in the accommodating space and comprises a first curved surface part positioned between the curved surface display area and the first bending area, two opposite sides of the first curved surface part respectively support the curved surface display area and the first bending area, the outlines of the two opposite sides of the first curved surface part are respectively matched with the outlines of the curved surface display area and the first bending area, and the first curved surface part is unequal in thickness; and

and the pressing structure is arranged on one side of the bending area, which is far away from the cover plate, so that the bending area, the supporting structure and the display area are pressed tightly.

Because the first curved surface part of the supporting structure is not of equal thickness and can take into account the contour of the film layer adjacent to the first curved surface part, stable support is formed. Therefore, the problem of assembly interference caused by contour difference can be solved while the stress of the bending area is effectively relieved, and the separation of the supporting structure and the film layer adjacent to the supporting structure is avoided. Moreover, especially when the bending part of the cover plate has a large angle bending relative to the flat part of the cover plate, the supporting structure is separated from the film layer adjacent to the supporting structure. In addition, compact structure's setting can further play the fixed design effect to display panel, prevents to separate between each rete of display screen subassembly.

In some embodiments, the first curved surface portion comprises two curved surfaces respectively matched with the contours of the curved surface display area and the first bending area; the curvature radius of the cambered surface matched with the profile of the first bending area is larger than that of the cambered surface matched with the profile of the curved surface display area. That is to say, the cambered surface of first curved surface portion and first bending zone looks adaptation is gentler to further alleviate the stress concentration problem after display panel buckles.

In some embodiments, the display area further comprises a flat display area connected to the curved display area. The apron is including the straight portion of apron of connecting the apron kink, and the plane display district sets up in the straight portion of apron.

In some embodiments, the flat display area has a quadrilateral shape, the flat display area includes four adjacent edges, and a bending area is disposed at the curved display area where at least one of the four edges is connected.

In some embodiments, the bending region further comprises a second bending region connected between the curved display region and the first bending region; the binding area and the plane display area are arranged oppositely; the plane display area, the curved surface display area, the second bending area, the first bending area and the binding area are connected in sequence in a smooth transition mode.

In some embodiments, the support structure further includes a first planar portion connected to the first curved portion, the first planar portion extends from the first curved portion and is located between the planar display area and the binding area, and opposite sides of the first planar portion respectively abut against the planar display area and the binding area. Therefore, the two opposite surfaces of the supporting structure respectively support against the display area and the bending area, so that the display panel has a stable structure after being bent.

In some embodiments, the first planar portion is of uniform thickness, but is not so limited.

In some embodiments, the pressing structure includes a second curved portion and a second flat portion connected to the second curved portion, the second curved portion is disposed on a side of the first bending region away from the cover plate, and the second flat portion is disposed on a side of the binding region away from the cover plate.

In some embodiments, the bending directions of the curved surface display area, the first bending area, the first curved surface portion and the second curved surface portion are all consistent with the bending direction of the cover plate bending portion.

In some embodiments, the compression structure is of uniform thickness, but is not so limited.

In some embodiments, the thickness of the support structure ranges from 0.1mm to 0.3mm to save tail space.

In some embodiments, the support structure is made of a hard material or a soft material; and/or the compaction structure is made of hard materials. Hard materials include hard metals or hard plastics. Hard metal such as steel sheet, titanium sheet, magnesium alloy, etc., and hard plastic such as acryl, to provide a strong supporting force. Examples of soft materials are polyethylene terephthalate, polyurethane, polymethyl methacrylate, foam, rubber, etc.

In some embodiments, the display screen assembly further comprises a first support layer disposed on a side of the display area remote from the cover plate and between the display area and the support structure; the outline of the first supporting layer is matched with the outline of the display area and is at least attached to the plane display area and the curved surface display area. Because display panel is flexible, through setting up first supporting layer, can support display panel's the position in plane display district and curved surface display district, make display panel flattening, prevent that display panel from taking place to curl.

In some embodiments, the display screen assembly further comprises a second supporting layer disposed on a side of the bending region close to the cover plate and between the bending region and the supporting structure; the profile of the second supporting layer is matched with the profile of the bending area and is at least attached to the first bending area and the binding area. In a similar way, because display panel is flexible, through setting up the second supporting layer, can support display panel's the first district of buckling and the position of binding the district, make display panel leveling, prevent that display panel from taking place to curl.

In some embodiments, the display screen assembly further comprises a heat dissipation layer disposed between the first support layer and the support structure. The heat dissipation layer is at least arranged corresponding to the plane display area and the curved surface display area, and the heat dissipation layer covers the display area as much as possible to ensure maximum heat dissipation.

In some embodiments, the second bending region has a gap with the first support layer, and/or the heat dissipation layer, and/or the support structure, and/or the second support layer to avoid stress concentration at the second bending region of the display panel.

In some embodiments, the opposing sides of the support structure are bonded to the second support layer and the heat sink layer, respectively, by an adhesive layer, and/or the compression forms are bonded to the inflection zones by an adhesive layer.

In some embodiments, the material of the support structure is a heat sink material. Namely, in the display screen assembly, the heat dissipation layer and the support structure can be manufactured into a composite film layer with the heat dissipation function and the support function, and the position of the composite film layer corresponding to the first bending area is designed into a structure with different thicknesses so as to reduce one laminating process.

In some embodiments, the display screen assembly further includes a polarizer positioned between the cover plate and the display area.

In some embodiments, the display screen assembly further comprises a transparent optical adhesive between the polarizer and the cover plate.

In some embodiments, the display screen assembly further includes a chip disposed in the bonding region, the bending region includes a trace, and the chip is electrically connected to the display region through the trace to drive the display region to display the image.

In some embodiments, the display screen assembly further includes a circuit board electrically connected to the bonding region, and the circuit board is electrically connected to the chip and the display region through the bonding region.

In some embodiments, the display panel is an organic light emitting diode display panel, a micro inorganic light emitting diode display panel, or a quantum dot electroluminescent display panel.

A second aspect of the present application provides a terminal, which includes the above-mentioned display screen assembly. The terminal can be an electronic product with a display interface, such as a mobile phone, a display, a tablet computer, a vehicle-mounted computer, an intelligent watch, an intelligent bracelet and the like.

Drawings

Fig. 1 is a schematic plan view of a terminal provided in some embodiments of the present application.

Fig. 2 is a schematic partial cross-sectional view taken along line a-a of fig. 1.

Fig. 3 is a perspective view of the cover plate of fig. 2.

Fig. 4 is a schematic structural diagram of the display panel in fig. 2.

Description of the main elements

Terminal 100

Display screen assembly 10

Cover plate 11

Front face 11a

Back surface 11b

Cover

plate bending parts

111, 111a, 111b

Flat portion 112 of cover plate

Display panel 12

Display area 121

Flat display area 1211

Curved display area 1212

Bending zone 122

First inflection region 1221

Second bending region 1222

Binding area 1223

Accommodating space 12c

Support structure 13

First curved surface portion 131

First plane part 132

Pressing structure 14

Second curved surface part 141

Second plane part 142

First supporting layer 151

Second support layer 152

Heat dissipation layer 153

Adhesive layer 154

Transparent optical cement 155

Polarizer 156

Chip 16

Circuit board 17

The following detailed description will further illustrate the present application in conjunction with the above-described figures.

Detailed Description

With the development of the full-face screen of the mobile phone, the conventional two-face curved screen scheme cannot meet the pursuit of consumers for exquisite appearance, and a four-face curved full-face screen scheme appears on the market, namely, the upper end face, the lower end face, the left end face and the right end face of the display screen are curved surfaces. The area (or lower frame) outside the lower display area of the display screen has dense routing, and the display panel needs to be bent to the back of the cover plate through a terminal bending (pad bending) process and is fixedly supported, so that how to keep a good bending form of the terminal bending process becomes a key for realizing a four-sided curved full-face screen.

Therefore, the embodiment of the application provides a display screen assembly and a terminal comprising the same. The terminal can be an electronic product with a display interface, such as a mobile phone, a display, a tablet computer, a vehicle-mounted computer, an intelligent watch, an intelligent bracelet and the like. In the following, the display screen assembly is taken as a four-surface curved display screen assembly, and the terminal is taken as a mobile phone for illustration.

Fig. 1 is a schematic plan view of a terminal 100 provided in some embodiments of the present application. As shown in fig. 1, the front surface of the terminal 100 is entirely a display area 121, which can implement a full screen display. The display area 121 is rectangular in fig. 1. In other embodiments, the display area 121 is not limited to a rectangle, but it may also be circular or shaped.

Fig. 2 is a schematic partial cross-sectional view taken along line a-a of fig. 1. Some elements of the terminal 100 are omitted in fig. 2, and only the display screen assembly 10 is illustrated. It is understood that the terminal 100 further includes a housing, a battery, and the like. As shown in fig. 2, the display screen assembly 10 includes a cover plate 11 and a display panel 12 disposed on one side of the cover plate 11. The cover plate 11 includes opposite front and

rear faces

11a and 11 b. The front surface 11a of the cover 11 is a display surface of the terminal 100, or the front surface 11a of the cover 11 means that the cover 11 is on the terminal 100, exposing the outer surface of the terminal 100. The display panel 12 is disposed on one side of the rear surface 11b of the cover plate 11. The cover 11 includes a cover straight portion 112 and at least one cover bending portion 111 bent from an edge of the cover straight portion 112. The cover plate bending part 111 is connected with the cover plate straight part 112 in a smooth transition mode. The cover bending portion 111 is bent from the front surface 11a toward the back surface 11b, or the cover bending portion 111 is bent toward the display panel 12. The display panel 12 is flexible and bendable. The display panel 12 is, for example, an organic light emitting diode display panel, a micro inorganic light emitting diode display panel, or a quantum dot electroluminescent display panel.

Fig. 3 is a perspective view of the cover plate 11 in fig. 2. As shown in fig. 3, the cover plate 11 includes a cover plate straight portion 112, two cover plate bending portions 111a respectively located at two opposite ends of the cover plate straight portion 112 in the Y-axis direction, and two cover plate bending portions 111b respectively located at two opposite ends of the cover plate straight portion 112 in the X-axis direction. The X-axis direction is perpendicular to the Y-axis direction. The flat portion 112 of the cover plate has a rectangular shape. The two cover bending portions 111a are bent from two short edges of the rectangle in a direction away from the cover straight portion 112. The two cover bent portions 111b are bent from the two long edges of the rectangle in a direction away from the cover straight portion 112. Therefore, four side faces included by the front face 11a of the cover plate 11 are all arc faces, and the cover plate 11 is provided with a 3D bending shape in the X-axis direction and the Y-axis direction, so that the user experience is improved.

In fig. 3, the flat portion 112 of the cover plate has a flat plate shape, and both opposite surfaces thereof are flat. In other embodiments, both the front surface 11a and the back surface 11b of the cover plate 11 may be arc surfaces, or the position of the back surface 11b of the cover plate 11 corresponding to the middle area is a plane surface, and the position of the front surface 11a of the cover plate 11 corresponding to the middle area is an arc surface.

In some embodiments, the included angle between the cover bending portion 111 and the cover flat portion 112 is approximately 90 degrees, for example, 80 degrees to 160 degrees. The cover plate 11 is transparent and may be made of glass or plastic.

Fig. 4 is a schematic structural diagram of the display panel in fig. 2, please refer to fig. 2 again in combination with fig. 4. The display panel 12 includes a display area 121 and a bending area 122 bent from the display area 121 to a side of the display area 121 away from the cover plate 11. The display area 121 includes a flat display area 1211 and a connected curved display area 1212. The flat display area 1211 is disposed on the flat portion 112 of the cover plate. The curved display area 1212 is disposed on the cover plate bending portion 111. The bending region 122 includes a first bending region 1221 disposed opposite to the curved display region 1212, a binding region 1223 connected to the first bending region 1221, and a second bending region 1222 connected between the curved display region 1212 and the first bending region 1221. The binding area 1223 is disposed opposite to the flat display area 1211, and the flat display area 1211, the curved display area 1212, the second bending area 1222, the first bending area 1221, and the binding area 1223 are connected in sequence and in a smooth transition manner.

The flat display area 1211 and the binding area 1223 are both flat and opposite to each other. The curved surface display area 1212 and the first bending area 1221 are both C-shaped, and the bending directions of the curved surface display area 1212 and the first bending area 1221 are the same as the bending direction of the cover plate bending portion 111, and the opening direction of the C-shaped is the direction in which the cover plate bending portion 111 points to the curved surface display area 1212 and the first bending area 1221. The curved display area 1212 and the first bending area 1221 are contained inside the cover plate bending portion 111, and the shapes of the curved display area 1212 and the first bending area 1221 are matched with the shape of the cover plate bending portion 111. The second bending region 1222 connects the curved display region 1212 and the first bending region 1221, and the second bending region 1222 is U-shaped.

In fig. 2, the display panel 12 includes a plurality of curved display regions 1212. Each curved surface display area 1212 is disposed at one of the cover bending portions 111 in fig. 3. Thus, the terminal 100 includes a flat display area 1211 and four curved display areas 1212 extending from the peripheral edges of the flat display area 1211, which can implement a four-sided curved full screen display. In addition, the flat display area 1211 has a quadrilateral shape similar to the flat portion 112 of the cover plate, and the flat display area 1211 includes four adjacent edges, and the bending area 122 is disposed at the curved display area 1212 connected to at least one of the four adjacent edges.

Specifically, the curved display area 1212 attached to the cover bending portion 111a at the lower side of the terminal 100 is provided with the bending area 122. That is, on the lower side of the terminal 100, the display panel 12 is bent to the side thereof facing away from the display screen for binding. In other embodiments, the number and location of the inflection zones 122 are not limited thereto. For example, the bending region 122 may be disposed at any one of an upper side, a left side, and a right side of the terminal 100.

In some embodiments, the display screen assembly 10 further includes a circuit board 17 disposed in the binding area 1223. The circuit board 17 is disposed on a side of the display area 121 away from the display surface thereof. The circuit board 17 is electrically connected to the binding area 1223 of the display panel 12, which is equivalent to that the circuit board 17 is electrically connected to the display area 121 through the binding area 1223 to drive the display area 121 to display the image. The Circuit Board 17 may be a Flexible Circuit Board (FPC).

In some embodiments, the display screen assembly 10 further includes a chip 16 electrically connected to the binding 1223. The circuit board 17 is electrically connected to the chip 16 through the bonding area 1223, and the circuit board 17 supplies power to the chip 16 and provides various signals. The method of mounting the Chip 16 On the bonding region 1223 includes, but is not limited to, a Chip On Film (COF) method and a cop (Chip On pi) packaging method.

Specifically, the flat display area 1211 and the curved display area 1212 each include a light emitting unit and a driving signal line. The first inflection region 1221, the second inflection region 1222, and the bonding region 1223 each include traces. The inflection region 122. The chip 16 is electrically connected to the driving signal line of the display area 121 through the routing of the bending area 122, and then the driving signal line drives the light emitting unit to emit light, so as to drive the display area 121 to display a picture.

In some embodiments, the bonding area 1223 of the display panel 12 is bent to a side of the display area 121 thereof away from the display screen through a terminal bending process, so that the terminal 100 implements full-screen display. After the display panel 12 is bent, an accommodating space 12c is defined by the flat display area 1211 of the display area 121, the curved display area 1212 of the display area 121, the second bending area 1222 of the bending area 122, the first bending area 1221 of the bending area 122, and the binding area 1223 of the bending area 122.

As shown in fig. 2, the display screen assembly 10 further includes a support structure 13 received in the receiving space 12 c. A surface of one side of the support structure 13 is disposed opposite to the flat display area 1211 and the curved display area 1212, and a surface of the other side of the support structure 13 is disposed opposite to the first bending area 1221 and the binding area 1223. The second inflection region 1222 is not in contact with the supporting structure 13 at all, and a gap is formed between the second inflection region 1222 and the supporting structure 13 to prevent the supporting structure 13 from damaging the second inflection region 1222. The bending region 122 is supported by the supporting structure 13, so that the impact resistance of the display panel 12 can be prevented from being reduced due to the suspension state of the bending region 122, and the wires of the bending region 122 are not easy to break.

Specifically, the support structure 13 includes a first curved surface portion 131 and a first flat surface portion 132 connecting the first curved surface portion 131. The first plane part 132 extends from the first curved part 131 and is located between the plane display area 1211 and the binding area 1223, and two opposite sides of the first plane part 132 respectively abut against the plane display area 1211 and the binding area 1223. The bending direction of the first curved surface portion 131 is identical to the bending direction of the cover bending portion 111. The first curved surface portion 131 is not of uniform thickness. The first curved surface portion 131 is located between the curved display area 1212 and the first bending area 1221. The opposite sides of the first curved surface portion 131 respectively abut against the curved display area 1212 and the first bending area 1221. The profiles of the two opposite sides of the first curved surface portion 131 are respectively matched with the profiles of the curved surface display area 1212 and the first bending area 1221.

Since the first curved surface portion 131 of the supporting structure 13 is not thick, and it can take into account the contour of the film layer adjacent thereto, a stable support is formed. Thus, the assembly interference problem caused by the profile difference can be solved while the stress of the bending region 122 is effectively relieved, and the separation of the supporting structure 13 from the film layer adjacent to the supporting structure is avoided. Moreover, particularly when the cover bending portion 111 has a large angle bending with respect to the cover flat portion 112, the supporting structure 13 is prevented from being separated from the film layer adjacent thereto.

In some embodiments, two surfaces of the first curved surface portion 131 that are respectively matched with the contours of the curved display area 1212 and the first bending area 1221 are both curved surfaces. The radius of curvature of the arc surface adapted to the profile of the first bending region 1221 is greater than the radius of curvature of the arc surface adapted to the profile of the curved display region 1212. That is to say, the arc surface of the first curved surface portion 131 matched with the first bending area 1221 is more gentle, so as to further alleviate the stress concentration problem after the display panel 12 is bent.

In some embodiments, the first plane part 132 may be of uniform thickness, and the thickness of the first curved part 131 at each position is greater than that of the first plane part 132. I.e. locally thickened at the bending location of the support structure 13 to fill the gap between the two film layers immediately adjacent thereto. It will be appreciated that the profile shape of the opposite sides of the support structure 13 may be adjusted according to design, and is not limited to the arc shape in fig. 2. Further, the first plane part 132 may be provided to be not uniform in thickness. In some embodiments, the thickness of the supporting structure 13 ranges from 0.1mm to 0.3mm, which can effectively save the space for bending the tail portion.

In some embodiments, the material of the supporting structure 13 is a hard material or a soft material. Hard materials include hard metals or hard plastics. Specifically, the material of the supporting structure 13 may be a hard metal with a certain strength, such as a steel sheet, a titanium sheet, a magnesium alloy, or the like, or a hard plastic, such as acryl, or a soft material, such as polyethylene terephthalate, polyurethane, polymethyl methacrylate, foam rubber, or the like. In addition, adhesive layers 154 may be provided on opposite surfaces of the support structure 13, respectively, to provide adhesion to the film layers immediately adjacent thereto.

When the supporting structure 13 is made of a hard material (e.g., a stainless steel sheet), it may be in a bent and shaped state before the material is fed, and a mark (e.g., a notch) may be disposed at a boundary position of a plane portion and a curved portion of the material fed to the supporting structure 13, so as to perform fitting alignment, and ensure positional accuracy.

It should be noted that, the boundary (as shown by the dotted line L1 in fig. 2) between the flat display 1211 and the curved display 121 in the display area 121 is determined whether there is a certain bending curvature. The boundary between the display area 121 and the bending area 122, or the boundary between the curved display area 1212 and the second bending area 1222 (as shown by a dotted line L2 in fig. 2), is determined by whether the picture can be displayed. The boundary between the first bending region 1221 and the binding region 1223 (e.g., the dashed line L4 in fig. 2) is determined by whether there is a certain bending curvature. However, the boundary between the first bending region 1221 and the second bending region 1222 is not strictly defined (as the dashed line L3 in fig. 2), at least the first bending region 1221 includes a portion opposite to the curved display region 1212, and the second bending region 1222 includes a portion bent in a U-shape.

The first inflection zone 1221 and the second inflection zone 1222 are demarcated in fig. 2 by the end surface of the first curved portion 131 of the support structure 13 (as indicated by the dashed line L3 in fig. 2). The second bending area 1222 is U-shaped, and the opening direction of the U-shape faces the end surface of the first curved surface portion 131 of the supporting structure 13.

As shown in fig. 2, the display screen assembly 10 further includes a first support layer 151. The first supporting layer 151 is disposed on a side of the display area 121 away from the cover plate 11 and between the display area 121 and the supporting structure 13. The first supporting layer 151 has a contour matching the contour of the display area 121, and at least fits the flat display area 1211 and the curved display area 1212.

Since the display panel 12 is flexible, the first supporting layer 151 can support the positions of the flat display area 1211 and the curved display area 1212 of the display panel 12, so as to flatten the display panel 12 and prevent the display panel 12 from curling.

As shown in fig. 2, the display screen assembly 10 further includes a second support layer 152. The second supporting layer 152 is disposed on one side of the bending region 122 close to the cover plate 11 and between the bending region 122 and the supporting structure 13. The second support layer 152 is adhered to a surface of one side of the support structure 13 by an adhesive layer 154. The profile of the second support layer 152 is adapted to the profile of the bending region 122, and at least fits the first bending region 1221 and the binding region 1223.

Similarly, since the display panel 12 is flexible, the positions of the first bending area 1221 and the binding area 1223 of the display panel 12 can be supported by the second supporting layer 152, so that the display panel 12 is flattened and the display panel 12 is prevented from curling.

Specifically, the portion of the first supporting layer 151 attached to the curved display region 1212 and the portion of the second supporting layer 152 attached to the first bending region 1221 may further bear stress generated when the display panel 12 is bent, so as to disperse the stress, thereby preventing the display panel 12 from being bent to be curled or broken. In addition, the first supporting layer 151 and the second supporting layer 152 are not in direct contact, and are spaced apart from each other at the second bending region 1222. Therefore, the second bending area 1222 of the display panel 12 can be bent gently to ensure that the display panel 12 is supported, and meanwhile, the stress concentration of the display panel 12 at the second bending area 1222 can be avoided.

In some embodiments, the material of the first supporting layer 151 and the second supporting layer 152 may be polyimide, acrylic resin, epoxy resin, polyethylene terephthalate, polymethyl methacrylate, polyethylene, or the like.

In some embodiments, the first supporting layer 151 and the second supporting layer 152 may be respectively attached to the display panel 12 by an adhesive (not shown). Adhesives are materials that bond two objects. In some embodiments, the adhesive may be a photo-curable adhesive or a thermal-curable adhesive, but is not limited thereto.

As shown in FIG. 2, the display screen assembly 10 further includes a heat dissipation layer 153. The heat dissipation layer 153 is disposed between the first support layer 151 and the support structure 13. The heat dissipation layer 153 is bonded to the surface of the support structure 13 by an adhesive layer 154. The heat dissipation layer 153 is disposed corresponding to at least the flat display area 1211 and the curved display area 1212, and the heat dissipation layer 153 covers the display area 121 as much as possible to ensure maximum heat dissipation. Meanwhile, an air gap is formed between the heat dissipation layer 153 and the second bending region 1222, and the heat dissipation layer 153 is not in direct contact with the second bending region 1222, so as to avoid stress concentration of the second bending region 1222 of the display panel 12.

In some embodiments, the material of the heat dissipation layer 153 includes at least one of copper foil, polyimide, Super Clean Foam (SCF), and a grid adhesive. When the heat dissipation layer 153 is an SCF heat dissipation material, the SCF can perform buffering and light-shielding functions, and mainly can perform heat dissipation, and since the SCF is a composite material that integrates light-shielding, heat dissipation, buffering, electromagnetic shielding, and other functions, the bonding process of the factory process is reduced, and the reduction of the thickness of the display panel assembly is facilitated.

In fig. 2, the first planar portion 132 of the support structure 13 is in close contact with the planar portion of the heat dissipation layer 153, and the first curved portion 131 of the support structure 13 is in close contact with the curved portion of the heat dissipation layer 153. Furthermore, the first curved surface portion 131 of the support structure 13 is of a non-uniform thickness design, with a profile on one side matching the curvature of the heat dissipation layer 153 and a profile on the other side matching the curvature of the second support layer 152. So, can guarantee that display panel 12 buckles the back, separation (peeling) can not take place between supporting structure 13 and the heat dissipation layer 153, between supporting structure 13 and the second supporting layer 152, promote the reliability of product.

In other embodiments, in the display panel assembly, the heat dissipation layer and the support structure can be made into a composite film layer having both heat dissipation function and support function, and the position of the composite film layer corresponding to the first bending region is designed into a structure with different thickness, so as to reduce one attaching process. Alternatively, the material of the support structure of the display panel assembly is a heat sink material, which does not include additional other heat sink layers.

In still other embodiments, the heat dissipation layer and the support structure are made into a composite film layer having both heat dissipation function and support function, and the composite film layer is designed to have a structure with different thickness corresponding to the position of the first bending region, but the display panel assembly may also include the heat dissipation layer between the first support layer and the composite film layer.

As shown in fig. 2, the display screen assembly 10 further includes a hold down structure 14. The pressing structure 14 is disposed on a side of the bending region 122 away from the cover plate 11 to press the bending region 122, the supporting structure 13 and the display region 121, so as to fix and shape the display panel 12.

Specifically, the pressing structure 14 includes a second curved surface portion 141 and a second flat surface portion 142 connected to the second curved surface portion 141, the second curved surface portion 141 is disposed on a side of the first bending area 1221 away from the cover plate 11, and the second flat surface portion 142 is disposed on a side of the binding area 1223 away from the cover plate 11. The bending direction of the second curved surface portion 141 is identical to the bending direction of the cover bending portion 111. The second planar portion 142 of the compact 14 is bonded to the planar portion (the bonding region 1223) of the display panel 12 by the adhesive layer 154, and the second curved portion 141 of the compact 14 is bonded to the curved portion (the first bending region 1221) of the display panel 12 by the adhesive layer 154 to prevent separation between the various film layers on one side thereof (e.g., between the support structure 13 and the second support layer 152, and between the support structure 13 and the heat sink layer 153).

In fig. 2, the hold-down structure 14 is of uniform thickness to facilitate machining. In other embodiments, the compression structure 14 may also be of a non-uniform thickness design.

In some embodiments, the material of the compression structure 14 is a hard material. Hard materials include hard metals or hard plastics. Examples of the hard metal include steel sheet, titanium sheet, and magnesium alloy.

In some embodiments, the compact form 14 is bonded to the inflection zones 122 by an adhesive layer 154. It should be noted that the adhesive layer 154 between the compact form 14 and the fold 122, the adhesive layer 154 between the support form 13 and the second support layer 152, and the adhesive layer 154 between the support form 13 and the heat sink layer 153 may be the same or different materials. The adhesive layer 154 is made of, for example, but not limited to, one of epoxy resin adhesive, conductive adhesive, and mesh adhesive.

As shown in FIG. 2, the display panel assembly 10 also includes a polarizer 156. The polarizer 156 is located between the cover plate 11 and the display region 121. The polarizer 156 is shaped to fit the cover 11, the flat display area 1211 and the curved display area 1212, and has a curved portion disposed on the cover bending portion 111 and a flat portion disposed on the cover flat portion 112. The curved portion corresponds to the curved display area 1212, and the flat portion corresponds to the flat display area 1211.

The boundary between the second bending region 1222 and the curved display region 1212 is defined by whether or not a screen can be displayed. In some embodiments, the boundary between the second bending region 1222 and the curved display region 1212 is defined by an end surface of the polarizer 156 disposed on the cover bending portion 111 (a dashed line L2 in fig. 2), but is not limited thereto.

As shown in FIG. 2, the display panel assembly 10 further includes a transparent optical Adhesive 155 (OCA) between the polarizer 156 and the cover plate 11. The OCA has the characteristics of being colorless and transparent, having the light transmittance of more than 90 percent, having good cementing strength, being capable of being cured at room temperature or middle temperature, having small curing shrinkage and the like, and is very suitable for being used as a bonding material of the polarizer 156 and the cover plate 11.

In summary, the layers of the display panel assembly 10 are sequentially stacked from the front surface 11a of the cover plate 11 to the back surface thereof, including the cover plate 11, the transparent optical adhesive 155, the polarizer 156, the display area 121 of the display panel 12, the first supporting layer 151, the heat dissipation layer 153, the supporting structure 13, the second supporting layer 152, the bending area 122 of the display panel 12, and the pressing structure 14. Wherein the adhesive layers 154 are disposed on opposite sides of the support structure 13 between the compact structure 14 and the display panel 12.

Because the display screen assembly 10 includes the supporting structure 13 and the pressing structure 14, the supporting structure 13 has a portion with different thickness, and the profiles of the two opposite sides of the supporting structure 13 are respectively matched with the profiles of the curved display area 1212 and the first bending area 1221, so that the display panel 12 is fixed after being bent by the terminal bending process, and meanwhile, the display panel 12 is uniformly stressed and has no stress concentration. Moreover, the supporting structure 13 is matched with the contour of the film layer adjacent to the supporting structure, so that the stress of the bending region 122 can be effectively relieved, and the problem of bending and wire breaking can be solved. In addition, two opposite surfaces of the supporting structure 13 are provided with bent cambered surfaces, instead of one surface deviating from the cover plate 11, the cambered surfaces are flat surfaces, and the thickness range of the supporting structure 13 is 0.1-0.3 mm, so that the tail part design space can be effectively saved.

Some embodiments of the present application further provide a method for manufacturing the display screen assembly 10, which includes: after the display panel 12 with the first and second supporting

layers

151 and 152 attached thereto is attached to the cover plate 11, the heat dissipation layer 153 is attached to the side of the first supporting layer 151 away from the display panel 12, and the supporting structure 13 is attached to the side of the heat dissipation layer 153. Then, the display panel 12 is reversely folded through the terminal bending process, so that the second supporting layer 152 is attached to the other side of the supporting structure 13, and the structural stability of one side of the heat dissipation layer 153 and the second supporting layer 152 is ensured through the supporting structure 13 with different thicknesses, and meanwhile, the bending form stability of the display panel 12 is ensured. Then, the pressing structure 14 is attached to the bending region 122 of the display panel 12 for shaping.

Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present application.

Claims

1. A display screen assembly, comprising:

the cover plate comprises at least one cover plate bending part;

the display panel is arranged on one side of the cover plate, the cover plate bending part bends towards one side of the display panel, the display panel comprises a display area and a bending area which is bent from the display area to one side, away from the cover plate, of the display area, the display area comprises a curved surface display area which is arranged corresponding to the cover plate bending part, the bending area comprises a first bending area which is arranged opposite to the curved surface display area and a binding area which is connected with the first bending area, and an accommodating space is enclosed by the display area and the bending area;

the supporting structure is accommodated in the accommodating space and comprises a first curved surface part, two opposite sides of the first curved surface part respectively abut against the curved surface display area and the first bending area, the outlines of the two opposite sides of the first curved surface part are respectively matched with the outlines of the curved surface display area and the first bending area, and the first curved surface part is unequal in thickness; and

2. The display screen assembly of claim 1, wherein the first curved portion comprises two curved surfaces that respectively conform to the contours of the curved display area and the first bend area; and the curvature radius of the cambered surface matched with the profile of the first bending area is larger than that of the cambered surface matched with the profile of the curved surface display area.

3. The display screen assembly of claim 1 or 2, wherein the display area further comprises a flat display area connected to the curved display area.

4. A display screen assembly according to claim 3 wherein the planar display area has a quadrilateral shape, the planar display area including four adjoining edges, the bend region being disposed at the curved display area to which at least one of the four adjoining edges is connected.

5. The display screen assembly of claim 3 or 4, wherein the inflection zones further comprise a second inflection zone connected between the curved display zone and the first inflection zone;

the binding area is arranged opposite to the plane display area;

the plane display area, the curved surface display area, the second bending area, the first bending area and the binding area are connected in sequence in a smooth transition mode.

6. The display screen assembly of claim 5, wherein the support structure further includes a first planar portion connected to the first curved portion, the first planar portion extending from the first curved portion and being positioned between the planar display area and the binding area, and wherein opposing sides of the first planar portion respectively abut the planar display area and the binding area.

7. The display screen assembly of claim 5 or 6, wherein the compression structure includes a second curved portion disposed on a side of the first bending region away from the cover plate and a second flat portion connected to the second curved portion disposed on a side of the binding region away from the cover plate.

8. The display screen assembly of claim 7, wherein the curved display area, the first bending area, the first curved portion, and the second curved portion all have a bending direction that is consistent with a bending direction of the cover plate bending portion.

9. A display screen assembly according to any of claims 1 to 8, wherein the support structure has a thickness in the range 0.1mm to 0.3 mm.

10. A screen assembly according to any one of claims 1 to 9, wherein the support structure is made of a rigid or flexible material; and/or the compaction structure is made of a hard material.

11. The display screen assembly of claim 10, wherein the hard material is a hard metal or a hard plastic.

12. A display screen assembly according to any of claims 5 to 11, further comprising a first support layer provided on a side of the display area remote from the cover plate and between the display area and the support structure;

the outline of the first supporting layer is matched with the outline of the display area and is at least attached to the plane display area and the curved surface display area.

13. The display screen assembly of claim 12, further comprising a second support layer disposed on a side of the inflection region proximate the cover plate between the inflection region and the support structure;

the profile of the second supporting layer is matched with the profile of the bending area and is at least attached to the first bending area and the binding area.

14. The display screen assembly of claim 12 or 13, further comprising a heat dissipation layer disposed between the first support layer and the support structure.

15. The display screen assembly of claim 14, wherein the second inflection region has a gap with the first support layer, and/or the heat dissipation layer, and/or the support structure, and/or the second support layer.

16. A screen assembly as recited in claim 14 or 15, wherein the support structure is bonded on opposite sides to the second support layer and the heat sink layer by adhesive layers, and/or the compression structure is bonded to the bend region by adhesive layers.

17. A display screen assembly according to any of claims 1 to 16 wherein the material of the support structure is a heat sink material.

18. The display panel assembly of any of claims 1 to 17, further comprising a polarizer between the cover plate and the display area.

19. The display panel assembly of claim 18, further comprising a transparent optical glue between the polarizer and the cover plate.

20. The display screen assembly according to any one of claims 1 to 19, further comprising a chip disposed in the bonding region, wherein the bending region includes a trace, and the chip is electrically connected to the display region through the trace to drive the display region to display a picture.

21. The display screen assembly of claim 20, further comprising a circuit board electrically connected to the bonding region, and wherein the circuit board is electrically connected to the chip and the display region through the bonding region.

22. A display screen assembly according to any one of claims 1 to 21, wherein the display panel is an organic light emitting diode display panel, a micro inorganic light emitting diode display panel, or a quantum dot electroluminescent display panel.

23. A terminal, characterized in that it comprises a display screen assembly according to any one of claims 1 to 22.