CN115171527A - Display panel manufacturing method and display panel - Google Patents
Display panel manufacturing method and display panel Download PDFInfo
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- CN115171527A CN115171527A CN202210701865.5A CN202210701865A CN115171527A CN 115171527 A CN115171527 A CN 115171527A CN 202210701865 A CN202210701865 A CN 202210701865A CN 115171527 A CN115171527 A CN 115171527A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000005452 bending Methods 0.000 claims abstract description 95
- 239000003292 glue Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 19
- 239000010410 layer Substances 0.000 claims description 14
- 239000012790 adhesive layer Substances 0.000 claims description 13
- 238000010008 shearing Methods 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 3
- 230000005489 elastic deformation Effects 0.000 abstract 1
- 239000011241 protective layer Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000003028 elevating effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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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
Abstract
The application discloses a display panel manufacturing method and a display panel, wherein the display panel manufacturing method comprises the steps of arranging a guide shaft which is stretched to generate elastic deformation on one side of a non-display surface of a flexible screen body to be bent; bending the flexible screen body by taking the guide shaft as a bending center; and (4) removing the tensile force, and filling at least part of the hollowed-out area after the guide shaft rebounds. By the mode, the manufacturing method of the display panel enables the bending area to be supported well all the time, avoids the phenomenon of dead fold, and is simple in step; the prepared display panel hollow area has good filling performance, is effectively supported, and the screen body circuit is not easy to be damaged, thereby ensuring the product quality.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a method for manufacturing a display panel and a display panel.
Background
With the continuous maturity of flexible OLED display technology, borderless display has become the mainstream of the market, and the requirement for the process is higher and higher, wherein the bending technology is one of important technologies for realizing borderless display.
The bending technique is a technique of bending an extension region of a display panel for providing a control circuit to a back surface of a display region. However, in the bending process, the bending stability is difficult to ensure, the stress of each point in the bending area is difficult to keep consistent, and the phenomenon of dead bending is easy to occur, so that the problems of line breakage and the like are caused. In addition, after the bending is finished, a hollowed-out area formed on the back of the bending area is prone to causing pressing damage of the bending area in the subsequent testing and whole machine assembling processes, and circuit damage is caused.
Disclosure of Invention
The technical problem that the present application mainly solves is to provide a display panel and a manufacturing method thereof, in which a bending region is well supported, so as to avoid a dead-fold phenomenon and avoid circuit damage.
In order to solve the technical problem, the application adopts a technical scheme that: the manufacturing method of the display panel is provided, wherein an elastic guide shaft is arranged on one side of a non-display surface of a flexible screen body to be bent; in the length direction of the flexible screen body, the flexible screen body comprises a display area, a bending area and an extension area which are sequentially connected; the guide shaft is positioned in the bending area and fixedly connected with the bending area, extends along the width direction of the flexible screen body and is in a stretching deformation state under the action of tensile force; bending the flexible screen body by taking the guide shaft as a bending center until the extension area and the display area are opposite and are arranged in a stacked mode; wherein the bending area forms a hollow-out area for accommodating the guide shaft; and removing the pulling force, and filling at least part of the hollowed-out area after the guide shaft rebounds.
In order to solve the above technical problem, another technical solution adopted by the present application is: a display panel is provided, which is manufactured by the manufacturing method of any one of the display panels in the embodiments.
The beneficial effect of this application is: different from the situation of the prior art, the guide shaft is arranged in the bending area, and the guide shaft is in a stretching deformation state and has high toughness, so that when the bending area is bent by taking the guide shaft as a bending center, the guide shaft can be supported in the bending area well to prevent the circuit from being broken; the guide shaft has elasticity, so that the bending track can reach an ideal state through abdication, the stress distribution of a bending area is uniform, and the phenomenon of dead fold is not easy to generate; meanwhile, after the bending is finished and the pulling force is removed, the guide shaft is rebounded and shortened, the radius is increased, the hollowed-out area can be automatically filled, the subsequent glue sealing step is not needed, the preparation step is simplified, and the problem that the bending area is crushed to cause the breakage of the circuit inside the screen body in the subsequent testing and whole machine assembling process is avoided. The display panel hollow area filling performance is good, effective support is achieved, the screen body circuit is not prone to being damaged, and the product quality is guaranteed.
Drawings
FIG. 1 is a schematic flow chart of an embodiment of a method for manufacturing a display panel according to the present application;
FIGS. 2-5 are schematic structural diagrams illustrating an embodiment of a method for manufacturing a display panel according to the present application;
fig. 6 is a plan view of an embodiment of a method of manufacturing a display panel according to the present application;
FIG. 7 is a schematic structural diagram of an embodiment of a guide shaft in a display panel according to the present application;
fig. 8 is a schematic structural view of another embodiment of a guide shaft in a display panel according to the present application.
Detailed Description
In order to make the purpose, technical solution and effect of the present application clearer and clearer, the present application is further described in detail below with reference to the accompanying drawings and examples. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. 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.
Referring to fig. 1, fig. 1 is a schematic flow chart illustrating a method for manufacturing a display panel according to an embodiment of the present disclosure.
The manufacturing method of the display panel comprises the following steps:
step S101: a guide shaft 1 with elasticity is arranged on one side of a non-display surface 2a of a flexible screen body 2 to be bent.
Specifically, referring to fig. 2 and fig. 6, fig. 2 is a schematic structural diagram of an embodiment corresponding to step S101 in fig. 1, and fig. 6 is a schematic top view of an embodiment corresponding to fig. 2. In the length direction (X direction in the figure) of the flexible screen body 2, the flexible screen body 2 includes a display area 21, a bending area 22 and an extension area 23 which are connected in sequence; the guide shaft 1 is located in the bending area 22, and the guide shaft 1 extends along the width direction of the flexible screen body 2 and is in a stretching deformation state under the action of a tensile force.
Referring to fig. 2, in the method for manufacturing a display panel of the present application, before bending, the flexible screen 2 includes a display surface 2b and a non-display surface 2a that are oppositely arranged along a thickness direction (i.e., Z direction in fig. 2); the flexible screen 2 includes a display area 21, a bending area 22 and an extension area 23 connected in sequence along a length direction (X direction). The image display may be performed in the display area 21, or in the display area 21 and the bending area 22, and the extension area 23 is used for mounting a chip, a flat cable, or the like. A supporting film 3 for improving the rigidity of the flexible screen body 2 can be fixedly connected to the non-display surface 2a, and an elevating block 4 can be fixedly connected to the supporting film 3 to ensure that the distance between the display area 21 and the extension area 23 after bending is 2 times of the bending radius; the fixed connection of the supporting membrane 3 and the heightening block 4 can be bonding; preferably, in this embodiment, in order to ensure the flexibility of the flexible screen 2, the support film 3 is not disposed on the non-display surface 2a of the bending region 22. In addition, a protective layer 5 is provided on the display surface 2b of the bending region 22.
Referring to fig. 6, in step S101, the guide shaft 1 may stretch the guide shaft 1 along the width direction (Y direction) of the flexible screen 2 to be in a stretching deformation state, and specifically, the guide shaft 1 is longer along the Y direction and is thinner along the radial direction. The guide shaft 1 is tensioned, has higher strength and stronger supporting performance, and can play a role in supporting and guiding for the subsequent bending of the flexible screen body 2. In step S101, the guide shaft 1 may be stretched first, and then the guide shaft 1 may be brought into contact with the non-display surface of the bending region 22. Of course, in other embodiments, it is also possible to first contact the guide shaft 1 with the non-display surface of the bending region 22 and then stretch the guide shaft 1.
Optionally, in step S101, before bending, a surface of the guide shaft 1 near the bending region 22 is a cambered surface. The cambered surface makes the bending area 22 present a single arc when bending, and the stress of each point is consistent, further avoiding dead fold phenomenon. Specifically, the bending radius of the flexible panel is 0.25-0.4mm, that is, the diameter of the hollow area 6 is 0.5-0.8mm, when the cross section of the guide shaft 1 before bending is circular, the diameter of the guide shaft 1 in a non-stretching state (that is, an original state) is 0.55-0.85mm (for example, 0.55mm, 0.65mm, 0.75mm, 0.85 mm), that is, the diameter of the guide shaft 1 can be slightly larger than the diameter of the hollow area 6, the guide shaft 1 rebounds after pulling force is removed, the bending area 22 acts on the guide shaft 1, so that the diameter of the guide shaft 1 is reduced, and the reduced diameter part of the guide shaft 1 can flow and fill one side area of the hollow area 6, which is close to the support film 3 and the block 4; in the bending process, due to the shape of the guide shaft 1, the bending track can be effectively ensured to be an arc, and the bending is convenient.
Further, the surface of the guide shaft 1 far away from the bending area 22 is a plane, so that the following hollow area 6 can be better filled at one side close to the heightening block 4 and attached to the heightening block 4 and the support film 3. Specifically, the diameter of the arc surface of the guide shaft 1 in the non-stretched state (i.e., the original state) is 0.5-0.8mm (e.g., 0.5mm, 0.6mm, 0.7mm, 0.8 mm), i.e., is consistent with the diameter of the hollow-out area 6, or may be slightly larger than the diameter of the hollow-out area 6, e.g., 0.5-0.85mm.
Optionally, the flexible screen body 2 may be an OLED flexible screen body, a Micro-LED flexible screen body, a liquid crystal flexible screen body, or the like.
Step S102: referring to fig. 3 and 4, fig. 3 is a schematic structural view of an embodiment corresponding to step S101 in fig. 1 when the embodiment is bent by 90 °, and fig. 4 is a schematic structural view of an embodiment corresponding to step S101 in fig. 1 when the bending is completed. Bending the flexible screen body 2 by taking the guide shaft 1 as a bending center until the extension area 23 is opposite to the display area 21 and is arranged in a stacked manner; wherein, a hollow-out area 6 for accommodating the guide shaft 1 is formed on one side of the non-display surface 2a of the bent flexible screen body.
In step S102, the extension area 23 is bent counterclockwise according to the direction indicated by the arrow in fig. 2 or fig. 3 until the support film 3 of the extension area 23 is attached to the block for elevating 4 (as shown in fig. 4), after the bending is completed, the support film 3, the block for elevating 4 and the flexible screen 2 surround to form a hollow-out area 6, and the guide shaft 1 is located in the hollow-out area 6. In the bending process, the non-display surface 2a of the bending area 22 is bent along the guide shaft 1, the bending area 22 always receives the supporting force of the guide shaft 1, namely the reaction force of the pressure, when the bending area 22 applies the pressure to the surface of the guide shaft 1, and the guide shaft 1 can be well supported in the bending area 22, so that the circuit is prevented from being broken; and because guiding axle 1 has elasticity, can make the orbit of buckling reach the ideal state through stepping down, make the bending region 22 after buckling be half-circular arc, and display area 21 and extension area 23 are parallel to each other, and the interval of display area 21 and extension area 23 is twice bending radius, is difficult for producing the dead fold phenomenon under this state.
Step S103: referring to fig. 5, the pulling force is removed, and the guide shaft 1 rebounds to fill at least part of the hollow area 6.
In the step S103, since the guide shaft 1 has elasticity, after the tensile force is removed, the guide shaft 1 rebounds, shortens along the Y direction, and thickens along the radial direction, and can automatically fill the remaining at least partially unfilled portion of the hollow area 6, so that the bent area after bending is well supported, and the problem that the bent area is crushed in the subsequent testing and whole machine assembling processes, which results in the breakage of the internal circuit of the screen body, is avoided; because the protective layer 5 forms stress towards the display surface 2b on the bending area 22 after bending, the stress applied to the bending area 22 by the protective layer 5 is balanced after the hollow-out area 6 is filled, so that the bonding force between the display area 21 and the extension area 23 is improved, and the problem of bending failure is avoided; meanwhile, the subsequent step of sealing the hollow-out area 6 is avoided, the steps are simplified, and the narrow hollow-out area 6 can be well filled.
Alternatively, the guide shaft 1 and the bending region 22 may be fixedly connected by adhesive. In some embodiments, the guide shaft 1 may be a glue line, and specifically, the glue line may be made of a transparent optical glue OCA having high flowability, high viscosity, high toughness, and high elasticity. The glue line can directly bond with bending region 22 when contacting with non-display surface 2a of bending region 22, and has stronger toughness, can support bending region 22 under tensile state, and mobility is strong, can fill out hollow-out area 6 automatically after kick-backing and realize abundant bonding. Of course, in other embodiments, a glue layer may also be applied to the non-display surface 2a of the bending region 22, and the guide shaft 1 may not have viscosity, so that the guide shaft 1 can be bonded to the bending region 22 when contacting the non-display surface 2a of the bending region 22, and the guide shaft 1 presses the glue layer to fill the hollow region 6 after rebounding.
Further, as shown in fig. 7 and 8, fig. 7 and 8 are schematic structural views of the guide shaft 1 in the display panel of the present application. The guide shaft 1 comprises an elastic shaft 11 and a glue layer 12 wrapping the elastic shaft 11. Specifically, the elastic shaft 11 may be made of rubber having high elasticity, and the rubber layer 12 may be made of transparent optical cement OCA. Wherein, step S103 includes:
after the pulling force is removed, the diameter of the elastic shaft 11 is increased after rebounding, and the hollowed-out area 6 is filled with the adhesive layer 12 under the extrusion of the elastic shaft. Wherein the elastic shaft 11 is used to provide higher elasticity and support, the high-fluidity adhesive layer 12 can quickly fill the hollow area 6 to achieve sufficient adhesion.
Further, step S103 includes:
and (3) removing the tensile force, raising the temperature of the hollow area 6 to a preset temperature, raising the pressure of the hollow area 6 to a preset pressure, and continuing for a preset time, so that the guide shaft 1 rebounds and fills the hollow area 6. Preferably, the predetermined temperature is 45-55 deg.C (e.g., 48 deg.C, 50 deg.C, 52 deg.C); and/or the predetermined pressure is 0.45-0.55MPa (e.g., 0.48MPa, 0.5MPa, 0.52 MPa); and/or the preset time is 5-10min (for example, 5min, 7min, 10 min), preferably 5min, so as to avoid the adhesive layer 12 flowing out from two ends due to too long time. The display panel after bending is placed under high temperature and high pressure, the fluidity of the glue layer 12 is improved, the preparation time of the display panel is shortened, and the preparation efficiency is improved. Specifically, the display panel may be placed in a defoaming machine, and a corresponding preset temperature, a preset pressure, and a preset time may be set in the defoaming machine, so that both defoaming and filling of the hollow area 6 may be achieved.
Optionally, referring to fig. 8, a hole (not shown) is formed in the elastic shaft 11, and the adhesive layer 12 fills the hole. Specifically, the elastic shaft 11 may be made of foam polyurethane, and has both strong elasticity and a large number of holes, so as to store a large number of glue layers 12.
Before step S101, the method further includes: carrying out low-temperature treatment on the guide shaft 1; wherein the low temperature treatment temperature is lower than ambient temperature; specifically, the low-temperature treatment temperature is 0 to 10 ℃. The temperature of locating when buckling is the room temperature, because guiding axle 1 is that the low temperature storage has passed, guiding axle 1 still has stronger elasticity and toughness at room temperature, and glue film 12 mobility is also relatively poor, and glue film 12 that lies in the hole when taut can not be extruded because of the deformation, and glue film 12 homoenergetic inside and outside elastic axis 11 can be along with elastic axis 11 produces deformation, has kept the shape of guiding axle 1 cross section, and has avoided spilling over of glue film 12 when buckling. When the bending is finished and then the high-temperature high-pressure treatment is carried out, the fluidity of the adhesive layer 12 is improved, the adhesive layer 12 in the hole flows out of the elastic shaft 11, and the adhesive layer 12 outside the hole jointly flows under the extrusion of the elastic shaft 11 to fill the hollowed-out area 6 to realize full adhesion; and because the volume of the hollow-out area 6 is less, the high-fluidity glue layer 12 can effectively and fully fill the hollow-out area 6 after flowing out from the elastic shaft 11.
Further, referring again to fig. 7 and 8, before bending, the elastic shaft 11 may be a circular shaft, and the side of the glue layer 12 near the bending region 22 is a cambered surface. The cambered surface makes the bending area 22 present a single arc when bending, and the stress of each point is consistent, further avoiding dead fold phenomenon. Specifically, when the cross section of the guide shaft 1 before bending is circular and the elastic shaft 11 is not provided with a hole, the diameter of the guide shaft 1 in a non-stretching state (i.e., an original state) is 0.55-0.85mm (e.g., 0.55mm, 0.65mm, 0.75mm, 0.85 mm), i.e., slightly larger than the diameter of the hollow-out area 6, so as to ensure that the adhesive layer 12 can fully fill the hollow-out area 6 after bending; when the cross section of the guide shaft 1 is circular and the elastic shaft 11 is provided with a hole therein, the diameter of the guide shaft 1 may be equal to the diameter of the hollow area 6 by 0.5-0.8mm (e.g., 0.5mm, 0.6mm, 0.7mm, 0.8 mm), since the area of the hollow area 6 near the support film 3 and the block 4 may be filled with the adhesive layer 12 in the hole.
Optionally, as shown in fig. 8, a side of the adhesive layer 12 away from the bending region 22 is a plane, which can better fill a side of the hollow-out region 6 close to the block 4 and attach to the block 4 and the support film 3. Specifically, the diameter of the arc surface of the guide shaft 1 in the non-stretched state (i.e., the original state) is 0.5 to 0.8mm (e.g., 0.5mm, 0.6mm, 0.7mm, 0.8 mm), that is, the diameter is consistent with the diameter of the hollow area 6.
Alternatively, as shown in fig. 7, the elastic shaft 11 is disposed eccentrically to the glue layer 12, and the central axis of the elastic shaft 11 is disposed on a side of the central axis of the glue layer 12 close to the bending region 22. I.e. the side far away from the bending region 22 has more glue layers 12, which is beneficial for filling the area of the hollowed-out area 6 far away from the bending region 22.
Alternatively, referring to fig. 6, step S101 includes:
clamping two ends of the guide shaft 1 by using a clamp, and enabling the guide shaft 1 to be stretched and deformed along the length direction of the guide shaft; and then the bending area 22 of the flexible screen body 2 is contacted with the outer surface of the guide shaft 1. The first stretching and the second contacting prevent the adhesive layer 12 from overflowing along with stretching during the stretching process.
Furthermore, in the width direction (Y direction), two ends of the guide shaft 1 in the stretching deformation state exceed the edge of the flexible screen body 2, so that the pulling force on the guide shaft 1 can be conveniently removed subsequently; and/or in the width direction, two ends of the rebounded guide shaft 1 are flush with the edge of the flexible screen body 2, so that the hollow area 6 is completely filled to the maximum extent, and the support performance of the bending area 22 is improved.
Further, the step of removing the pulling force in step S103 includes: the guide shaft 1 beyond the edge of the flexible screen 2 is subjected to a shearing operation to remove the pulling force. In particular, the cutting position is 50-100 μm from the edge of the flexible screen 2 (see cut line C in FIG. 6). Shearing convenient operation, and easily control and the distance at the edge of the flexible screen body 2, this shearing position guarantees that can fill more areas of fretwork area 6 and can not be excessive after guiding axle 1 kick-backs.
Referring to fig. 5, fig. 5 is a schematic structural diagram of an embodiment of a display panel according to the present application. The display panel is manufactured by the manufacturing method in any of the above embodiments. The display panel comprises a guide shaft 1, a flexible screen body 2, a support film 3, a block 4 and a protective layer 5. Referring to fig. 2, two surfaces of the flexible screen body 2 are a display surface 2b and a non-display surface 2a respectively; the flexible screen body 2 comprises a display area 21, a bending area 22 and an extension area 23 which are connected in sequence along the length direction. The image display may be performed in the display area 21, or in the display area 21 and the bending area 22, and the extension area 23 is used for mounting a chip, a flat cable, or the like. A supporting film 3 for improving the rigidity of the flexible screen body 2 is fixedly connected to the non-display surface 2a, and an elevating block 4 is fixedly connected between the display area 21 and the supporting film 3 of the extension area 23 so as to ensure that the distance between the bent display area 21 and the bent extension area 23 is 2 times of the bending radius; the display surface 2b of the bending area 22 is provided with a protective layer 5; the support membrane 3 and the flexible screen body 2, and the support membrane 3 and the heightening block 4 can be fixedly connected in a bonding mode; the bending area 22, the support film 3 and the heightening block 4 are surrounded to form a hollow-out area 6, the hollow-out area 6 is filled with the guide shaft 1, and the guide shaft 1 is made of the guide shaft 1 in any one of the embodiments.
The display panel has good filling property of the hollow area, is effectively supported, is not easy to damage a screen circuit, and ensures the effect of product quality; and then prevent to carry out follow-up test and complete machine assembling process and easily cause the regional pressure of buckling and hinder, guarantee that the regional circuit of buckling does not receive the damage.
The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure or those directly or indirectly applied to other related technical fields are intended to be included in the scope of the present disclosure.
Claims (10)
1. A method of manufacturing a display panel, comprising:
arranging an elastic guide shaft on one side of the non-display surface of the flexible screen body to be bent; in the length direction of the flexible screen body, the flexible screen body comprises a display area, a bending area and an extension area which are sequentially connected; the guide shaft is positioned in the bending area, extends along the width direction of the flexible screen body and is in a stretching deformation state under the action of tensile force;
bending the flexible screen body by taking the guide shaft as a bending center until the extension area is opposite to the display area and is arranged in a stacked manner; a hollow area for accommodating the guide shaft is formed on one side of the non-display surface of the bent flexible screen body;
and removing the pulling force, and filling at least part of the hollowed-out area after the guide shaft rebounds.
2. The manufacturing method according to claim 1, wherein the guiding shaft comprises an elastic shaft and a glue layer wrapping the elastic shaft, and the step of filling the hollow area after the guiding shaft rebounds after the pulling force is removed comprises the following steps:
and removing the tensile force, increasing the radius of the elastic shaft after the elastic shaft rebounds, and filling the hollowed-out area by the adhesive layer under the extrusion of the elastic shaft.
3. The method of claim 1, wherein said step of removing said pulling force and filling said hollowed-out area after said guiding shaft rebounds comprises:
removing the tension, raising the temperature of the hollowed-out area to a preset temperature, raising the pressure of the hollowed-out area to a preset pressure, and continuing for a preset time, wherein the guide shaft rebounds and fills the hollowed-out area;
preferably, the preset temperature is 45-55 ℃; and/or the preset pressure is 0.45-0.55Mpa; and/or the preset time is 5-10min.
4. The manufacturing method according to claim 2,
a hole is formed in the elastic shaft, and the hole is filled with the adhesive layer; before the step of arranging an elastic guide shaft on one side of the non-display surface deviating from the flexible screen body to be bent, the method comprises the following steps of: carrying out low-temperature treatment on the guide shaft; wherein the temperature of the low-temperature treatment is lower than ambient temperature;
preferably, the temperature of the low-temperature treatment is 0-10 ℃.
5. The manufacturing method according to claim 1, wherein the step of providing a guide shaft having elasticity on a side of the non-display surface of the flexible screen body to be bent comprises:
clamping two ends of the guide shaft in the width direction of the flexible screen body by using a clamp, and enabling the guide shaft to be stretched and deformed in the width direction of the flexible screen body;
and fixedly connecting the bending area of the flexible screen body with the guide shaft.
6. The manufacturing method according to any one of claims 1 to 5,
in the width direction of the flexible screen body, two ends of the guide shaft in a stretching deformation state exceed the edge of the flexible screen body; and/or the presence of a gas in the atmosphere,
in the width direction of the flexible screen body, two ends of the rebounded guide shaft are flush with the edge of the flexible screen body.
7. The method of manufacturing of claim 6, wherein said step of removing said pulling force comprises: shearing the guide shaft beyond the edge of the flexible screen body to remove the tensile force;
preferably, the shearing location is 50-100 μm from the edge of the flexible screen.
8. The manufacturing method according to claim 1,
one side of the guide shaft, which is far away from the bending area, is a plane.
9. The manufacturing method according to claim 2,
and before the step of removing the pulling force and filling the hollowed-out area after the guide shaft rebounds, the elastic shaft and the glue layer are eccentrically arranged, and the central shaft of the elastic shaft is arranged on one side, close to the bending area, of the central shaft of the glue layer.
10. A display panel produced by the production method according to any one of claims 1 to 9.
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