CN108766247B - Display panel and manufacturing method thereof - Google Patents
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- CN108766247B CN108766247B CN201810792968.0A CN201810792968A CN108766247B CN 108766247 B CN108766247 B CN 108766247B CN 201810792968 A CN201810792968 A CN 201810792968A CN 108766247 B CN108766247 B CN 108766247B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000005452 bending Methods 0.000 claims abstract description 64
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- 239000012790 adhesive layer Substances 0.000 description 6
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- 230000001070 adhesive effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
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- 230000014759 maintenance of location Effects 0.000 description 1
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- 230000000717 retained effect Effects 0.000 description 1
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Classifications
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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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- Electroluminescent Light Sources (AREA)
Abstract
The present application relates to various display panels and methods of manufacturing display panels. The display panel includes a flexible screen body and a support layer. The flexible screen body comprises a display area, a bending area and an extension area which are sequentially arranged. The flexible screen body also includes a first surface and a second surface disposed opposite each other. The flexible screen is curved from the second surface toward the first surface. The display area and the extension area are arranged in parallel. The supporting layer is attached to the first surface. The supporting layer comprises a bottom supporting film, at least one middle supporting film and a top supporting film which are sequentially stacked on the first surface, wherein the middle supporting film comprises a stress release area for reducing deformation stress, and the stress release area is opposite to the bending area. The stress relief region can reduce the bending stress generated by the supporting layer in the bending region, and avoid the damage of the supporting layer due to the larger bending stress.
Description
Technical Field
The present disclosure relates to display technology, and more particularly, to a display panel and a method for manufacturing the display panel.
Background
With more and more flexible screen bodies, the phenomenon of poor display of the screen bodies caused by folding the flexible screen bodies is more and more. The stress generated after the flexible screen body is folded influences the reliability of the display module structure. In order to ensure the stiffness and the protection effect of the flexible screen body, a supporting layer is often required to be attached to the back surface of the flexible screen body. However, the folding of the flexible screen body and the supporting layer can generate larger bending stress, and the flexible screen is easy to damage.
Disclosure of Invention
Accordingly, it is necessary to provide a display panel and a method for manufacturing the display panel, which solve the problem that a large bending stress is generated when a flexible screen body and a supporting layer are folded.
A display panel, comprising:
the flexible screen body comprises a display area, a bending area and an extension area which are sequentially arranged, wherein the display area and the extension area are arranged in parallel, the flexible screen body further comprises a first surface and a second surface which are oppositely arranged, and the flexible screen body is bent from the second surface towards the first surface;
the supporting layer is attached to the first surface and is arranged, the supporting layer comprises a bottom supporting film, at least one middle supporting film and a top supporting film, wherein the bottom supporting film, the at least one middle supporting film and the top supporting film are sequentially stacked on the first surface, the middle supporting film comprises a stress release area for reducing deformation stress, and the stress release area is opposite to the bending area.
In one embodiment, the middle support membrane comprises:
a first support film disposed between the bottom support film located in the display area and the top support film located in the display area;
a second support film disposed between the bottom support film at the extension region and the top support film at the extension region;
the gap between the first support film and the second support film constitutes the stress relief region.
In one embodiment, the middle support membrane at the stress relief zone is provided with a hollowed-out structure.
In one embodiment, the hollowed-out structure includes at least one through groove.
In one embodiment, the plurality of through grooves are sequentially arranged at intervals along the arc top of the bending area.
In one embodiment, the width of the through slot is gradually reduced from the middle of the stress relief region to both sides of the stress relief region.
In one embodiment, the distance between adjacent through grooves is gradually increased from the middle part of the stress relief region to both sides of the stress relief region along the arc top of the bending region.
In one embodiment, the edges of the through slots are provided with a saw tooth structure.
A display panel manufacturing method comprises the following steps:
providing a flexible screen body, wherein the flexible screen body comprises a display area, a bending area and an extension area which are sequentially arranged;
manufacturing a middle support film with a stress release area;
the back of the flexible screen body is sequentially laminated with a bottom supporting film, at least one middle supporting film and a top supporting film, and the stress release area and the bending area are opposite to each other.
In one embodiment, the making of the middle support membrane with stress relief regions comprises:
determining the area of the middle support film corresponding to the bending area as the stress release area;
and cutting and removing the middle support film positioned in the stress release area, and dividing the middle support film into a first support film and a second support film.
In one embodiment, the bottom support film, at least one of the middle support film and the top support film are sequentially attached to the back surface of the flexible screen body, and the stress release area and the bending area are opposite to each other and include:
attaching the first support film to one side of the bottom support film, which is positioned in the display area and is far away from the flexible screen body;
and attaching the second support film to one side, away from the flexible screen body, of the bottom support film located in the extension area.
In one embodiment, the making of the middle support membrane with stress relief regions comprises:
determining the area of the middle support film corresponding to the bending area as the stress release area;
and cutting the middle support film positioned in the stress release area to form a hollowed-out structure.
The application provides a display panel, the supporting layer includes bottom support membrane, at least one middle part support membrane and top support membrane. The middle support membrane is disposed between the bottom support membrane and the top support membrane. The stress release area of the middle support film is opposite to the bending area. When the flexible screen body is bent, the supporting layers are bent together, and the stress relief area can reduce bending stress generated by the supporting layers in the bending area, so that the supporting layers are prevented from being damaged due to larger bending stress.
Drawings
Fig. 1 is a schematic diagram of a display panel according to an embodiment of the present application;
FIG. 2 is a schematic view of a middle support membrane according to an embodiment of the present disclosure;
FIG. 3 is a schematic view of a middle support membrane according to another embodiment of the present disclosure;
fig. 4 is a schematic structural view of a middle support membrane according to another embodiment of the present application.
Reference numerals illustrate:
display panel 10
Flexible screen 100
Display area 110
Inflection region 120
Extension region 130
First surface 140
Second surface 150
Support layer 200
Bottom support film 210
Top support film 230
Middle support membrane 220
Stress relief region 221
Hollow structure 222
Through groove 223
Saw tooth structure 224
First support film 225
Second support film 226
Cover layer 300
Touch sensing layer 310
Polarizer 320
Cover plate 330
Ink layer 340
First adhesive layer 350
Second adhesive layer 360
The driving unit 410
Flexible circuit board 420
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the following embodiments are used to further describe the display panel and the manufacturing method of the display panel of the present application in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
Referring to fig. 1, a display panel 10 is provided. The display panel 10 includes a flexible screen body 100 and a support layer 200. The flexible screen body 100 includes a display area 110, a bending area 120 and an extension area 130, which are sequentially arranged. The flexible screen 100 further includes a first surface 140 and a second surface 150 disposed opposite each other. The flexible screen 100 is curved from the second surface 150 toward the first surface 140. The display area 110 and the extension area 130 are disposed in parallel. The supporting layer 200 is adhered to the first surface 140. The supporting layer 200 includes a bottom supporting film 210, at least one middle supporting film 220, and a top supporting film 230 stacked in order on the first surface 140, where the middle supporting film 220 includes a stress relief area 221 for reducing deformation stress, and the stress relief area 221 is disposed opposite to the bending area 120.
In one embodiment, the flexible screen 100 may have a flexible substrate. The flexible substrate may have a display driving circuit, an array of light emitting diodes, and the like. The flexible screen 100 may be an OLED display. The flexible screen body 100 may be bent along a certain direction, or may be bent along a plurality of directions at the same time. The surface of the display area 110 facing away from the support may be used to display a pattern. It is understood that the display area 110 may have a frame around the periphery of the surface to be displayed. The bezel may serve as a non-display area. When the display panel 10 is a full screen display, the bezel may have a small width or no bezel.
The inflection zones 120 may be used to bend the flexible screen 100. The inflection zones 120 may not have a distinct demarcation line. The size and bend radius of the inflection region 120 may be flexibly changed. In one embodiment, the base material of the inflection region 120 is more flexible than the materials of the display region 110 and the extension region 130. The extension 130 may be used to provide a circuit device. The second surface 150 at the display area 110 may be seen with a display pattern.
The bending of the bending region 120 after the bending of the flexible screen body 100 may form a U-shaped structure. Inside the U-shaped structure may be the first surface 140. Outside the U-shaped structure is the second surface 150. The parallel arrangement of the extension area 130 and the display area 110 may enable the display panel 10 to have a plate-like structure, and facilitate the fixation of the flexible screen 100. It is understood that the display area 110, the inflection area 120, and the extension area 130 may be integrally formed.
The supporting layer 200 is used to support and maintain the shape of the flexible screen 100 after being bent. In one embodiment, the supporting layer 200 may be physically fixed to the first surface 140 of the flexible screen 100, or the supporting layer 200 may be adhered to the first surface 140 of the flexible screen 100 by using glue.
In one embodiment, the support layer 200 may comprise a multilayer film. The multi-layer film structure may make the support layer 200 more stable. The multi-layer film structure can avoid the problem that the whole flexible screen body 100 is not supported when the single-layer film structure is damaged. The materials of at least two of the layers of the multi-layer film may be different and thus different film materials may be used depending on the curvature and shape of the flexible screen bend. Different membrane layers may also have different structures to provide stable support to the flexible screen 100. The multi-layer film may include the bottom support film 210, the top support film 230, and the middle support film 220 therein. The bottom support film 210 may be directly attached to the first surface 140. The plurality of film layers can be adhered by colloid.
The stress relief region 221 may be used to relieve stress that builds up in the middle support film 220 after the support layer 200 is bent. Since the stress relief region 221 is disposed directly opposite the inflection region 120, i.e., the stress relief region 221 bends together when the inflection region 120 bends. The stress relief region 221 may be provided with a structure for relieving stress. And the thicker the support layer 200, the greater the bending stress that can be produced. The thickness of the stress relief region 221 may be thinner than the middle support film 220 located in the display region 110 and the extension region 130, or the material of the middle support film 220 located in the stress relief region 221 may be softer, or the middle support film 220 of the stress relief region 221 may have a hollowed-out structure 222, which may reduce the stress of the support layer 200 due to bending.
The display panel 10 provided herein, the support layer 200 includes a bottom support film 210, at least one middle support film 220, and a top support film 230. The middle support membrane 220 is disposed between the bottom support membrane 210 and the top support membrane 230. The stress relief region 221 of the middle support film 220 is disposed directly opposite the inflection region 120. When the flexible screen body 100 is bent, the supporting layer 200 is bent together, and the stress relief region 221 can reduce the bending stress generated by the supporting layer 200 in the bending region 120, so as to avoid the supporting layer 200 from being damaged due to the larger bending stress.
Referring to fig. 1 and 2, in one embodiment, the middle support membrane 220 includes a first support membrane 225 and a second support membrane 226. The first support film 225 is disposed between the bottom support film 210 located in the display area 110 and the top support film 230 located in the display area 110. The second support film 226 is disposed between the bottom support film 210 located in the extension region 130 and the top support film 230 located in the extension region 130. The gap between the first support film 225 and the second support film 226 constitutes the stress relief region 221. I.e. in the display area 110, the support layer 200 comprises the bottom support film 210, the first support film 225 and the top support film 230. In the inflection region 120, the support layer 200 includes only a bottom support film 210 and a top support film 230. The gap is left between the bottom support film 210 and the top support film 230. In the extension region 130, the support layer 200 includes the bottom support film 210, the second support film 226, and the top support film 230. Therefore, the supporting layer 200 located at the bending region 120 lacks a portion of the middle supporting film 220, and the bending stress of the supporting layer 200 is correspondingly reduced and is easier to bend. The bottom support film 210 and the top support film 230 of the support layer 200 located in the bending region 120 are sufficient to support bending of the flexible screen body 100, and meanwhile, no large bending stress is generated, so that the service life of the display panel 10 can be effectively prolonged.
Referring to fig. 3, in one embodiment, the middle support film 220 located in the stress relief region 221 is provided with a hollowed-out structure 222. The hollow structure 222 may have different array patterns, and the array patterns may be circular or square. The hollowed-out structure 222 may ensure that the middle support film 220 located in the bending region 120 is not completely divided, so that the strength of the support layer 200 in the bending region 120 is further enhanced while the stress of the support layer 200 located in the bending region 120 is released.
In one embodiment, the hollow structure 222 includes at least one through groove 223. The through groove 223 is provided in the middle support film 220 located in the stress relief region 221. The width of the through groove 223 may be slightly smaller than the width of the flexible screen 100 in the bending region 120. Cutting a through groove 223 in the middle support film 220 is convenient and quick, and can improve production efficiency.
Referring to fig. 4, in one embodiment, the through slots 223 are plural. The through grooves 223 are sequentially spaced along the arc top of the bending region 120. After the supporting layer 200 is bent, a plurality of through grooves 223 are disposed at intervals at the same position of the cambered top arch formed by bending the supporting layer 200. In one embodiment, the length of the through slot 223 may be 1mm-3mm. The size and shape of the through slots 223 may vary. The shape and size of the through groove 223 may be designed according to the bending stress distribution of the supporting layer 200 in the bending region 120. The frames of the through grooves 223 can connect the first support film 225 and the second support film 226, which is convenient for carrying and mass production.
In one embodiment, the width of the through groove 223 is gradually reduced from the middle of the stress relief region 221 to both sides of the stress relief region 221. In one embodiment, the through slot 223 may be rectangular. The width of the rectangular through groove 223 may vary according to the position of the through groove 223 in the bending region 120. When the support layer 200 is bent, the support layer 200 at the middle of the stress relief region 221 generates a larger stress. By maximizing the width of the through groove 223, the less material the middle support film 220 in the middle of the stress relief region 221 is, and thus the bending stress of the middle support film 220 can be reduced. By reducing the width of the through groove 223 on both sides of the stress relief region 221, a greater portion of the middle support film 220 can be retained, and thus breakage of the stress relief region 221 after being subjected to tensile force can be avoided.
In one embodiment, the distance between adjacent through grooves 223 is gradually increased from the middle of the stress relief region 221 to both sides of the stress relief region 221 along the arc top of the inflection region 120. The distance between the adjacent through grooves 223 is gradually increased at both sides of the stress relief region 221, so that the retention of the material of the middle support film 220 can be further increased at both sides of the stress relief region 221, and thus the tensile strength of the middle support film 220 at the stress relief region 221 can be further increased.
Referring again to fig. 3, in one embodiment, the edges of the through slots 223 are provided with saw tooth structures 224. The saw tooth structure 224 may release the deformation stress generated by bending the periphery of the through groove 223 when the bending region 120 is bent. The surface of the saw tooth structure 224 may be polished to avoid tearing of the through groove 223 due to the saw tooth structure 224.
In one embodiment, the bottom support film 210 and the top support film 230 are each made of polyethylene terephthalate, and the middle support film 220 is made of polyimide film. The polyimide film has better flexibility. Thus facilitating bending of the support layer 200. The polyethylene terephthalate has a better strength to ensure the bending state of the bending region 120 and to improve the compression resistance of the display region 110 and the extension region 130.
In one embodiment, the thickness of the bottom support film 210 and the top support film 230 is 0.05mm-0.1mm. The thickness of the middle support film 220 is 0.05mm to 0.1mm. At this thickness, the strength of the supporting layer 200 can be ensured without greatly increasing the thickness of the display panel 10.
Referring again to fig. 1, in one embodiment, the display panel 10 further includes a cover layer 300. The cover layer 300 is disposed on the surface of the display area 110. The cover layer 300 includes a touch sensing layer 310, a polarizer 320, and a cover plate 330 sequentially disposed in the display area 110 away from the supporting layer. The touch sensing layer 310 may be used as a touch signal input terminal. The display area 110 may trigger different display patterns according to the sensing signal of the touch sensing layer 310. The polarizer 320 may absorb part of the light to prevent the natural light from affecting the display. The cover 330 may be made of glass material or organic material. The cover 330 may be provided with an ink layer 340 on a side adjacent to the display area 110. The ink layer 340 may be used to block light to enhance display. The ink layer 340 may be formed on the surface of the cap plate 330 by coating.
In one embodiment, the ink layer 340 and the polarizer 320 may be fixed by a first adhesive layer 350. The touch sensing layer and the display area 110 may be fixed by a second adhesive layer 360. The first adhesive layer 350 and the second adhesive layer 360 may be made of an optical adhesive, an organic resin, or the like.
In one embodiment, the display panel 10 further includes a driving unit 410 and a flexible circuit board 420. The driving unit 410 and the flexible circuit board 420 are respectively disposed at intervals in the extension region 130. The driving unit 410 may be configured to receive a control signal sent by the motherboard and input the signal into the flexible screen 100. The flexible circuit board 420 may be connected to a motherboard and provide power to the motherboard.
The application also provides a manufacturing method of the display panel 10. The method for manufacturing the display panel 10 may be used to manufacture the display panel 10 provided in the above embodiment. The manufacturing method of the display panel 10 comprises the following steps:
s10, providing a flexible screen body 100, wherein the flexible screen body 100 comprises a display area 110, a bending area 120 and an extension area 130 which are sequentially arranged;
s20, manufacturing a middle support film 220 with a stress release area 221;
s30, laminating a bottom support film 210, at least one middle support film 220 and a top support film 230 on the back of the flexible screen body 100, wherein the stress release area 221 is opposite to the bending area 120.
In the step S10, the display area 110 on the front surface of the flexible screen body 100 may be used to display a pattern. The back of the flexible screen 100 may be bonded to the support layer 200. The bending of the bending region 120 may make the display region 110 and the extension region 130 parallel. The support layer 200 may be disposed between the extension region 130 and the display region 110. The support layer 200 may support the flexible screen 100 that is bent.
In step S20, the stress relief region 221 may have the same size and shape as the inflection region 120. The stress relief region 221 may serve to reduce stress generated after the flexible screen 100 is bent.
In step S30, the bottom support film 210 may be adhered to the back surface of the flexible screen 100 by an organic adhesive, and then the middle support film 220 may be adhered to the surface of the bottom support film 210 remote from the flexible screen 100. The stress relief region 221 of the middle support film 220 needs to be disposed corresponding to the inflection region 120. Thus, when the flexible screen 100 is bent, the stress relief regions 221 may be bent together, and the stress relief regions 221 may reduce bending stress.
In one embodiment, the step S20 includes:
s21, determining the region of the middle support film 220 corresponding to the bending region 120 as the stress relief region 221;
s22, cutting and removing the middle support film 220 positioned in the stress relief region 221, and dividing the middle support film 220 into a first support film 225 and a second support film 226.
In step S21, the size and shape of the inflection zone 120 may be first determined, and then the size and shape of the stress relief zone 221 of the middle support film 220 may be determined. The size and shape of the stress relief region 221 may be the same as the size and shape of the inflection region 120.
In step S22, after the size and shape of the stress relief region 221 are determined, the middle support film 220 is cut into two parts. The stress relief region 221 no longer corresponds to the middle support membrane 220. The physical thickness of the support layer 200 at the stress relief region 221 is accordingly reduced, and thus bending stress generated when the support layer 200 is bent can be reduced.
In one embodiment, the step S30 includes:
s31, attaching the first support film 225 to the side of the bottom support film 210, which is located at the display area 110 and is far away from the screen body 100;
and S32, attaching the second support film 226 to one side of the bottom support film 210, which is positioned at the extension area 130 and is far away from the screen body 100.
It will be appreciated that the order of the steps S31 and S32 may be reversed. The first support film 225 and the second support film 226 may also be simultaneously attached to the surface of the bottom support film 210 at intervals using an automated apparatus.
In one embodiment, the S20 includes:
s21' determining a region of the middle support film 220 corresponding to the inflection region 120 as the stress relieving region 221;
s22', cutting the middle support film 220 positioned in the stress release area 221 to form a hollowed-out structure 222.
In step S22', the shape and size of the hollowed-out structure 222 may be designed in advance according to the shape and the stress generated in the bending region 120. The hollow structure 222 can be manufactured by mechanical cutting, photoetching and other technical means, is convenient and quick, and is beneficial to mass production.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the patent. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (5)
1. A display panel, comprising:
the flexible screen body (100) comprises a display area (110), a bending area (120) and an extension area (130) which are sequentially arranged, wherein the display area (110) and the extension area (130) are arranged in parallel, the flexible screen body (100) further comprises a first surface (140) and a second surface (150) which are oppositely arranged, and the flexible screen body (100) is bent from the second surface (150) towards the first surface (140);
the support layer (200) is adhered to the first surface (140), the support layer (200) comprises a bottom support film (210), at least one middle support film (220) and a top support film (230) which are sequentially laminated on the first surface (140), the middle support film (220) comprises a stress release area (221) for reducing deformation stress, and the stress release area (221) is opposite to the bending area (120);
the middle support film (220) positioned in the stress release area (221) is provided with a hollowed-out structure (222), the hollowed-out structure (222) comprises at least one through groove (223), and the edge of the through groove (223) is provided with a sawtooth structure (224);
the display panel (100) further comprises a driving unit (410) and a flexible circuit board (420), and the driving unit (410) and the flexible circuit board (420) are arranged in the extension area (130) at intervals.
2. The display panel according to claim 1, wherein the plurality of through grooves (223) is provided, and the plurality of through grooves (223) are sequentially arranged at intervals along the arc top of the bending region (120).
3. The display panel according to claim 2, wherein the width of the through groove (223) gradually decreases from the middle of the stress relief region (221) to both sides of the stress relief region (221).
4. The display panel according to claim 2, wherein a distance between adjacent through grooves (223) is gradually increased from a middle portion of the stress relief region (221) to both sides of the stress relief region (221) along an arc top of the bending region (120).
5. A method for manufacturing a display panel, comprising:
providing a flexible screen body (100), wherein the flexible screen body (100) comprises a display area (110), a bending area (120) and an extension area (130) which are sequentially arranged;
fabricating a middle support film (220) having a stress relief region (221);
the back of the flexible screen body (100) is sequentially laminated with a bottom supporting film (210), at least one middle supporting film (220) and a top supporting film (230), and the stress release area (221) is opposite to the bending area (120);
the making of the middle support film (220) with stress relief regions (221) includes:
-determining the area of the middle support membrane (220) corresponding to the inflection zone (120) as the stress relief zone (221);
cutting the middle support film (220) positioned in the stress relief area (221) to form a hollowed-out structure (222); the hollow structure (222) comprises at least one through groove (223), and a sawtooth structure (224) is arranged at the edge of the through groove (223).
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| CN201810792968.0A CN108766247B (en) | 2018-07-18 | 2018-07-18 | Display panel and manufacturing method thereof |
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| CN201810792968.0A CN108766247B (en) | 2018-07-18 | 2018-07-18 | Display panel and manufacturing method thereof |
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| CN109256400B (en) * | 2018-11-16 | 2021-01-26 | 京东方科技集团股份有限公司 | Flexible display substrate, manufacturing method thereof and display device |
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Application publication date: 20181106 Assignee: YUNGU (GU'AN) TECHNOLOGY Co.,Ltd.|BAZHOU YUNGU ELECTRONIC TECHNOLOGY Co.,Ltd.|KUNSHAN NEW FLAT PANEL DISPLAY TECHNOLOGY CENTER Co.,Ltd. Assignor: KUNSHAN GO-VISIONOX OPTO-ELECTRONICS Co.,Ltd. Contract record no.: X2019990000156 Denomination of invention: Display panel and manufacturing method of display panel License type: Common License Record date: 20191030 |
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