CN114333594B - Cover plate structure of flexible display module, flexible display module and flexible display equipment - Google Patents
Cover plate structure of flexible display module, flexible display module and flexible display equipment Download PDFInfo
- Publication number
- CN114333594B CN114333594B CN202210002254.1A CN202210002254A CN114333594B CN 114333594 B CN114333594 B CN 114333594B CN 202210002254 A CN202210002254 A CN 202210002254A CN 114333594 B CN114333594 B CN 114333594B
- Authority
- CN
- China
- Prior art keywords
- layer
- display module
- flexible display
- cover plate
- flexible
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000011521 glass Substances 0.000 claims abstract description 124
- 238000005452 bending Methods 0.000 claims abstract description 32
- 239000010410 layer Substances 0.000 claims description 264
- 239000012790 adhesive layer Substances 0.000 claims description 17
- 239000003973 paint Substances 0.000 claims description 5
- 239000004642 Polyimide Substances 0.000 description 15
- 229920001721 polyimide Polymers 0.000 description 15
- 238000010586 diagram Methods 0.000 description 9
- 239000011247 coating layer Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention relates to a cover plate structure of a flexible display module, the flexible display module and flexible display equipment. The cover plate structure of the flexible display module comprises an organic cover plate layer and a flexible glass layer which are attached to each other; the flexible glass layer is provided with a first part and a second part, the first part is positioned in a region corresponding to the bendable region of the flexible display module on the cover plate structure, and the second part is positioned in a region corresponding to the non-bending region of the flexible display module on the cover plate structure; the thickness of the first portion of the flexible glass layer is greater than the thickness of the second portion; or the flexible glass layer is only arranged in the area of the cover plate structure corresponding to the non-bending area of the flexible display module. The scheme can reduce the overall resilience force of the flexible display module when the flexible display module is bent, and can better maintain the fit between the structures of all layers. The amount of misplacement at the edge of the support layer when the flexible display module is bent can be reduced, so that the probability of propping up the Pad bonding area of the flexible display module is reduced.
Description
Technical Field
The invention relates to the technical field of display, in particular to a cover plate structure of a flexible display module, the flexible display module and flexible display equipment.
Background
The screen of the Organic light emitting diode display device (Organic LIGHT EMITTING DISPLAY, OLED) can also have certain flexibility and adaptability, and based on the characteristics, the OLED display screen can be prepared into a flexible display module, and can be applied to folding and curling products with different forms, such as folding mobile phones, watches, bracelets and other wearable devices.
Fig. 1 is a schematic structural diagram of a conventional flexible display module. As shown in fig. 1, the flexible display module includes a polyimide layer (PI) 1, ultra-thin glass (UTG) 2, a polarizer 3, a display 4, a back film 5, and a support layer 6. The polyimide layer 1 and the ultra-thin glass 2 are combined together to form a cover plate structure of the display screen 4, and the cover plate structure covers the surface of the display screen 4, so that the display screen 4 is protected on one hand, and a better touch hand feel is provided for a user when the user performs touch operation on the display screen 4 on the other hand. The support layer 6 is typically chosen to be metal, which acts as a support for the display screen 4.
The flexible display module shown in fig. 1 has the following drawbacks and disadvantages:
Firstly, the thickness of the flexible display module is thicker, and the cover plate material with higher modulus, namely the ultrathin glass 2, is used, so that the whole rebound force of the flexible display module is larger, and the situation that the flexible display module is separated from a whole machine such as a mobile phone, a watch, a bracelet and the like easily occurs in actual use.
Secondly, the above-mentioned flexible display module assembly uses the double-deck apron structure that polyimide layer 1 and ultra-thin glass 2 combined, when flexible display module assembly is buckled, the dislocation volume between support layer 6 and notacoria 5 can increase by a wide margin in the edge of flexible display module assembly. According to the simulation, a flexible display module (thickness of polyimide layer 90 micrometers, thickness of ultrathin glass 70 micrometers) with a double-layer cover plate combining a polyimide layer (PI) 1 and ultrathin glass (UTG) 2 has a dislocation amount of a supporting layer 6 at the edge of 525 micrometers and 366 micrometers respectively compared with a flexible display module (thickness of polyimide layer 90 micrometers) with a polyimide layer (PI) as a single-layer cover plate. Because the Pad-bonding area of the flexible display module is located in the bending area, the Pad-bonding area (as shown in the area a in fig. 1) is easily damaged by the support layer 6 after the support layer moves in a staggered manner, resulting in defects such as bright lines.
Disclosure of Invention
The invention provides a cover plate structure of a flexible display module, the flexible display module and flexible display equipment, and aims to solve the technical problems that in the prior art, the rebound force is large when a bendable region of the flexible display module is bent, and the dislocation amount at the edge of a supporting layer is large.
The cover plate structure of the flexible display module is used for covering the surface of the flexible display module, the flexible display module is provided with a bendable area and a non-bendable area, and the cover plate structure comprises an organic cover plate layer and a flexible glass layer which are attached to each other; the flexible glass layer is provided with a first part and a second part, the first part is positioned in a region corresponding to the bendable region of the flexible display module on the cover plate structure, and the second part is positioned in a region corresponding to the non-bending region of the flexible display module on the cover plate structure; the thickness of the first portion of the flexible glass layer is greater than the thickness of the second portion; or the flexible glass layer is only arranged in the area of the cover plate structure corresponding to the non-bending area of the flexible display module.
Wherein the thickness of the first part ranges from 50 to 70 micrometers, and the thickness of the second part ranges from 30 to 50 micrometers.
Wherein the thickness of the organic cover plate layer is 60-90 micrometers.
Wherein, one side of the flexible glass layer, which is opposite to the organic cover plate layer, is planar and parallel to the organic cover plate layer; a portion of the flexible glass layer thicker than the second portion protrudes on a side of the flexible glass layer facing the organic cover sheet layer.
Wherein, the side of the flexible glass layer facing the organic cover plate layer is planar and parallel to the organic cover plate layer; a portion of the flexible glass layer thicker than the second portion protrudes on a side of the flexible glass layer facing away from the organic cover layer.
The cover plate structure further comprises a thickness filling layer, wherein the thickness filling layer is arranged on one side of the flexible glass layer, protruding from the first portion, and the thickness of the area, corresponding to the first portion, of the thickness filling layer is smaller than that of the area, corresponding to the second portion, of the thickness filling layer, so that one side, facing away from the flexible glass layer, of the thickness filling layer is a plane parallel to the organic cover plate layer.
Wherein the thickness filling layer is an adhesive layer or a coating layer.
The joint of the first part and the second part of the flexible glass layer is provided with a corner filling structure, and the corner filling structure is arc-shaped.
The thickness of the second portion of the flexible glass layer is a fixed value, or the thickness of the second portion of the flexible glass layer has a gradual gradient, and the thickness of a position far from the first portion is smaller, and the thickness of a position near to the first portion is larger.
The flexible glass layer is only arranged in the area of the cover plate structure corresponding to the non-bending area of the flexible display module, and a filling layer which is arranged on the same layer as the flexible glass layer is arranged in the area of the cover plate structure corresponding to the bendable area of the flexible display module.
The flexible display module provided by the invention comprises the cover plate structure of the flexible display module.
The flexible display module further comprises a display panel and a supporting layer, wherein the supporting layer and the cover plate structure are respectively arranged on two sides of the display panel; the support layer and the area corresponding to the bendable area of the flexible display module are provided with hollowed-out patterns.
The flexible display device provided by the invention comprises the flexible display module.
Compared with the prior art, the cover plate structure of the flexible display module, the flexible display module and the flexible display equipment provided by the embodiment of the invention have the following advantages:
The cover plate structure of the flexible display module provided by the embodiment of the invention has the advantages that the flexible glass layer comprises the first part corresponding to the non-bending area of the flexible display module and the second part corresponding to the bending area of the flexible display module, the thickness of the second part is smaller than that of the first part, or the flexible glass layer is only arranged in the area corresponding to the bending area of the flexible display module, in other words, the flexible glass layer is thinner or not arranged in the area corresponding to the bending area of the flexible display module. The flexible display module is characterized in that the flexible display module is provided with a bending area, and the bending area is provided with a bending area which is used for bending the flexible display module. On the other hand, the arrangement can reduce the dislocation amount of the edge of the supporting layer of the flexible display module when the bendable region of the flexible display module is bent, and the dislocation amount of the edge of the supporting layer is reduced, so that the probability that the Pad bonding region of the flexible display module is damaged by the top of the edge of the supporting layer can be reduced, and accordingly, the probability of occurrence of defects such as bright lines and the like can be reduced.
The flexible display module provided by the embodiment of the invention comprises the cover plate structure, and when the bendable region of the flexible display module is bent, the resilience force generated based on the flexible glass layer can be reduced or absent, so that the integral resilience force of the bendable region of the flexible display module during bending can be reduced, the bonding between the layer structures of the flexible display module can be better maintained, and the damage probability of the flexible display module during bending is reduced. And the misplacement of the edge of the supporting layer when the bendable region of the flexible display module is bent can be reduced, so that the probability of propping up the Pad-bonding region of the flexible display module is reduced, and accordingly, the probability of poor appearance of bright lines and the like is also reduced.
The flexible display device provided by the embodiment of the invention comprises the flexible display module, and has the beneficial effects consistent with those of the flexible display module, and is not repeated herein.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic diagram of a conventional flexible display module;
fig. 2 is a schematic structural diagram of a flexible display module including a cover structure in embodiment 1 of the present invention;
FIG. 3 is a schematic diagram of a part of the flexible display module shown in FIG. 2;
FIG. 4 is a schematic diagram of an alternative embodiment of the cover structure and the flexible display module shown in FIG. 2;
FIG. 5 is a schematic diagram of a part of the flexible display module shown in FIG. 4;
fig. 6 is a schematic structural diagram of a flexible display module including a cover structure in embodiment 2 of the present invention;
FIG. 7 is a schematic diagram of a part of the flexible display module shown in FIG. 6;
Fig. 8 is a schematic structural diagram of a flexible display module including a cover structure in embodiment 3 of the present invention;
fig. 9 is a schematic partial structure of the flexible display module shown in fig. 8.
In the figure:
a 1-polyimide layer; 2-ultra-thin glass; 3-a polarizer; 4-a display screen; 5-backing film; 6-a support layer;
10-an organic cover sheet layer; 11-a flexible glass layer; 111-a first part; 112-a second part; 12-an adhesive layer; 13-a paint layer; 14-a filling layer;
20-a polarizer; 30-a display panel; 40-backing film; 50-supporting layer.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiments of a cover plate structure of a flexible display module, a flexible display module and a flexible display device provided by the invention are described below with reference to the accompanying drawings.
(1) Example 1 of cover plate Structure of Flexible display Module
Referring to fig. 2 and 3, the cover plate structure of the flexible display module provided in this embodiment is used for covering the surface of the flexible display module, so that on one hand, a protection effect can be provided for the flexible display module, and on the other hand, a good touch feel can be provided for a user when the user touches the flexible display module. The cover structure comprises an organic cover layer 10 and a flexible glass layer 11 which are adhered. Specifically, the material of the organic cover sheet layer 10 is typically Polyimide (PI), and may be polyethylene terephthalate (PET) or other organic materials. In this embodiment, the thickness of the organic cover sheet layer 10 is 60 to 90 μm. The flexible glass layer 11 is a flexible glass, typically ultra-thin glass (UTG). An adhesive layer 12 is generally arranged between the organic cover plate layer 10 and the flexible glass layer 11, and the organic cover plate layer 10 and the flexible glass layer 11 are bonded and adhered together by the adhesive layer 12; the adhesive layer 12 is generally made of OCA optical adhesive.
The flexible display module is provided with a bendable region and a non-bendable region. In this embodiment, the flexible glass layer 11 has a first portion 111 and a second portion 112, the first portion 111 is located in a region of the cover structure corresponding to the bendable region of the flexible display module, and the second portion 112 is located in a region of the cover structure corresponding to the non-bendable region of the flexible display module. The thickness of the first portion 111 of the flexible glass layer 11 is greater than the thickness of the second portion 112. Specifically, the thickness of the first portion ranges from 50 to 70 micrometers, and the thickness of the second portion ranges from 30 to 50 micrometers.
In this embodiment, the side of the flexible glass layer 11 facing away from the organic cover layer 10 is planar and parallel to the organic cover layer 10. The portion of the flexible glass layer 11 where the first portion 111 is thicker than the second portion 112 protrudes on the side of the flexible glass layer 11 facing the organic cover sheet layer 10.
Since the thickness of the first portion 111 of the flexible glass layer 11 is greater than that of the second portion 112, at least one side of the flexible glass layer 11 will be uneven, and therefore a thickness filling layer needs to be disposed in the cover plate structure to fill the thickness difference between the first portion 111 and the second portion 112 of the flexible glass layer 11, so that two sides of the flexible glass layer 11 can be flat after the thickness filling layer is combined, and thus good adhesion is achieved with other layer structures located at two sides of the flexible glass layer 11. In the present embodiment, the side of the flexible glass layer 11 facing the organic cover layer 10 is uneven, and therefore, it is necessary to provide a thickness-filling layer on the side of the flexible glass layer 11 facing the organic cover layer 10. Specifically, the adhesive layer 12 may be used as a thickness filling layer, as shown in fig. 2 and 3. The adhesive layer 12 is used as a thickness filling layer, so that not only the uneven side of the flexible glass layer 11 (the side of the flexible glass layer 11 facing the organic cover plate layer 10 in the embodiment) can be connected with the organic cover plate layer 10 in a flat state, but also no additional other structure is added.
As an alternative to using the adhesive layer 12 as a thickness filling layer, as shown in fig. 4 and 5, a coating layer 13 may be further disposed on the uneven side of the flexible glass layer 11, that is, on the side of the flexible glass layer 11 facing the organic cover layer 10, where the coating layer 13 is disposed between the adhesive layer 12 and the flexible glass layer 11, and the side of the coating layer 13 contacting the adhesive layer 12 is in a plane parallel to the organic cover layer 10, while the side contacting the flexible glass layer 11 is uneven, and has a thickness variation, specifically, the thickness in the area corresponding to the first portion 111 of the flexible glass layer 11 is small, and the thickness in the area corresponding to the second portion 112 of the flexible glass layer 11 is large, so as to compensate for the thickness variation on the side of the flexible glass layer 11 facing the organic cover layer 10, so that when the flexible glass layer 11 and the coating layer 13 are in a whole, both sides thereof (that is, the side of the coating layer 13 facing away from the flexible glass layer 11 and the side of the flexible glass layer 11 facing the organic cover layer 10) are in a plane parallel to the organic cover layer 10. In this embodiment, the material of the paint layer 13 is an organic paint, and specifically may be polyimide or the like.
In the present embodiment, the thickness of the first portion 111 is larger than the thickness of the second portion 112, in other words, the second portion 112 of the flexible glass layer 11 is thinner. By means of the arrangement, on the one hand, the resilience force generated by the second portion 112 of the flexible glass layer 11 during bending can be reduced, so that when the flexible display module is bent in the bendable region, acting force between the flexible glass layer 11 and the adjacent other layer structures, which is used for separating the flexible glass layer 11 from the adjacent other layer structures, can be reduced, and the bonding between the flexible glass layer 11 and the adjacent other layer structures can be better maintained, so that the damage probability of the flexible display module during bending is reduced. On the other hand, the arrangement can reduce the dislocation amount of the edge of the supporting layer of the flexible display module when the bendable region of the flexible display module is bent, and the dislocation amount of the edge of the supporting layer is reduced, so that the probability that the Pad bonding region of the flexible display module is damaged by the top of the edge of the supporting layer can be reduced, and accordingly, the probability of occurrence of defects such as bright lines and the like can be reduced.
According to the simulation, when the thickness of the organic cover layer 10 is 90 micrometers (the material of the organic cover layer 10 is polyimide), the thickness of the first portion 111 of the flexible glass layer 11 is 70 micrometers, and when the thickness of the second portion 112 is 40 micrometers, the amount of dislocation at the edge of the support layer is 460 micrometers when the bendable region of the flexible display module is bent, and compared with the case that the amount of dislocation at the edge of the support layer is 525 micrometers when the thickness of the organic cover layer 10 is 90 micrometers and the thickness of the flexible glass layer 11 is 70 micrometers, which is mentioned in the background art, the amount of dislocation at the edge of the support layer is obviously reduced in the embodiment.
In this embodiment, the junction of the first portion 111 and the second portion 112 of the flexible glass layer 11 has a fillet structure which is arc-shaped. The arc-shaped corner-filling structure can be used as transition between the first part 111 and the second part 112, so that stress concentration between the first part 111 and the second part 112 of the flexible glass layer 11 is improved, and the problems that the flexible glass layer 11 is broken at the joint of the first part 111 and the second part 112 are avoided.
In this embodiment, the thickness of the second portion 112 of the flexible glass layer 11 may be a fixed value, that is, the thickness of the second portion 112 is uniform throughout the area. The flexible glass layer 11 thus provided is simpler in shape and lower in manufacturing cost.
Further, the thickness of the second portion 112 of the flexible glass layer 11 may also have a gradual gradient, and the thickness is smaller at a position farther from the first portion 111 and is larger at a position nearer to the first portion 111. The arrangement can further reduce the rebound force generated by the second portion 112 during bending, and further reduce the amount of dislocation of the bendable region of the flexible display module at the edge of the supporting layer during bending. In this preferred embodiment, the thickness of the first portion 111 being greater than the thickness of the second portion 112 means that the lower limit of the thickness range of the first portion 111 is greater than or equal to the upper limit of the thickness range of the second portion 112.
(2) Example 2 of cover plate Structure of Flexible display Module
In this embodiment, the cover structure of the flexible display module also includes the organic cover layer 10 and the flexible glass layer 11 that are bonded to each other, as in the embodiment 1 described above; also, the flexible glass layer 11 also includes a first portion 111 and a second portion 112, the thickness of the first portion 111 being greater than the thickness of the second portion 112.
As shown in fig. 6 and 7, in the present embodiment, the side of the flexible glass layer 11 facing the organic cover sheet layer 10 is planar and parallel to the organic cover sheet layer 10. The portion of the flexible glass layer 11 where the first portion 111 is thicker than the second portion 112 protrudes on the side of the flexible glass layer 11 facing away from the organic cover layer 10.
In this embodiment, the thickness of the first portion 111 of the flexible glass layer 11 is greater than the thickness of the second portion 112, so, as in embodiment 1, the cover structure of the flexible display panel in this embodiment can also achieve the effects of small rebound force of the flexible glass layer 11 and small amount of dislocation of the supporting layer when the bendable region of the flexible display module is bent.
Unlike embodiment 1 described above, the protruding shape of the first portion 111 of the flexible glass layer 11, which is thicker than the second portion 112, is on the side of the flexible glass layer 11 facing away from the organic cover layer 10. Therefore, unlike the above-described embodiment 1, in the present embodiment, the thickness-filling layer needs to be provided on the side of the flexible glass layer 11 facing away from the organic cover layer 10, and the thickness variation of the flexible glass layer 11 is compensated for on this side, so that the side of the flexible glass layer 11 facing away from the organic cover layer 10 can be bonded to other layer structures on this side in a flat shape.
In this embodiment, the thickness-filling layer may also be an adhesive layer or a paint layer. When the thickness-filling layer is an adhesive layer, the adhesive layer is not the adhesive layer 12 between the flexible glass layer 11 and the organic cover layer 10, but the adhesive layer between the other layer structure (for example, a polarizer) to which the side of the flexible glass layer 11 facing away from the organic cover layer 10 is attached and the flexible glass layer 11.
Other parts not mentioned in this embodiment are the same as those in embodiment 1 described above, and are not described here again.
(3) Example 3 of cover plate Structure of Flexible display Module
As in embodiment 1 described above, in this embodiment, the cover structure of the flexible display module also includes the organic cover layer 10 and the flexible glass layer 11 that are bonded to each other.
In the present embodiment, as shown in fig. 8 and 9, the flexible glass layer 11 is disposed only in the area of the cover plate structure corresponding to the non-bending area of the flexible display module, unlike the above-described embodiments 1 and 2. In other words, the flexible glass layer 11 is not provided in the bendable region.
In order to fill the blank of the area where the flexible glass layer 11 is not arranged in the bendable area, a filling layer 14 which is arranged on the same layer as the flexible glass layer 11 is arranged in the area, corresponding to the bendable area, of the cover plate structure, and the filling layer 14 can enable other layer structures which are arranged on two sides of the flexible glass layer 11 and are attached to the flexible glass layer 11 to have flat shapes in the non-bending area and the bendable area of the flexible display panel. Typically, the flexible glass layer 11 is bonded to the other layer structures on both sides by adhesive. In this embodiment, the thickness of the filling layer 14 is equal to the sum of the thickness of the flexible glass layer 11 and the thicknesses of the two adhesive layers located at two sides of the flexible glass layer 11, so that the distance between the layer structures at two sides of the flexible glass layer 11 is substantially consistent between the non-bending area and the bendable area of the flexible display module, and thus the flat adhesion between the layer structures of the flexible display module can be better ensured.
In this embodiment, the cover plate structure of the flexible display module, the flexible glass layer 11 is only disposed in the area corresponding to the non-bending area of the flexible display module, and the flexible glass layer 11 is not disposed in the area corresponding to the bendable area of the flexible display module, so that when the bendable area of the flexible display module is bent, the layer structure of the flexible display module is not separated due to the resilience force generated by the flexible glass layer 11, and the bonding between the layer structures of the flexible display module can be better maintained, thereby reducing the damage probability of the flexible display module during bending. Meanwhile, as the flexible glass layer 11 is not arranged in the bendable region of the flexible display module, the dislocation amount of the edge of the supporting layer is correspondingly reduced when the bendable region of the flexible display module is bent, the dislocation amount of the edge of the supporting layer is reduced, the probability that the Pad bonding region of the flexible display module is damaged by the top of the edge of the supporting layer can be reduced, and accordingly, the probability of occurrence of defects such as bright lines and the like can be reduced.
Other parts not mentioned in this embodiment are the same as those in embodiment 1 and embodiment 2, and are not described here again.
(4) Embodiments of flexible display modules
In this embodiment, the flexible display module includes the cover plate structure of the flexible display module described in the above embodiments.
In this embodiment, as shown in fig. 2 to 9, the flexible display module may further include a polarizer 20, a display panel 30, a back film 40, a supporting layer 50, and the like, in addition to the cover plate structure. The polarizer 20 is located on a side of the display panel 30 facing the cover plate, and the back film 40 and the supporting layer 50 are located on a side of the display panel 30 facing away from the cover plate.
In this embodiment, the supporting layer 50 has a hollowed pattern in a region corresponding to the bendable region of the flexible display module; in the area corresponding to the non-bending area of the flexible display module, the supporting layer 50 may have a structure or shape without hollow. The tangential modulus of the area of the supporting layer 50 corresponding to the bendable area of the flexible display module can be reduced, when the bendable area of the flexible display module is bent, the dislocation amount of the edge of the supporting layer 50 can be reduced, the dislocation amount of the edge of the supporting layer 50 is reduced, the probability that the Pad-bonding area of the flexible display module is damaged by the top of the edge of the supporting layer 50 can be reduced, and accordingly, the probability of occurrence of defects such as bright lines and the like can be reduced. On the other hand, the arrangement can further reduce resilience force generated when the bendable region of the flexible display module is bent, so that the lamination between the layers of structures of the flexible display module can be better maintained, and the damage probability of the flexible display module during bending is reduced.
In the present embodiment, the material of the supporting layer 50 is metal, and the thickness thereof is 100-150 μm. In the prior art, in order to enable the supporting layer to bend under the condition that other parameters are consistent, the thickness of the supporting layer is set to be small, usually 30-50 micrometers, so that a problem that the supporting layer cannot provide enough support for the display panel easily occurs. Compared with the prior art, the thickness of the supporting layer 50 is larger in the embodiment, so that better support can be provided for the display panel 30; meanwhile, as the hollowed-out patterns are arranged in the area corresponding to the bendable area of the flexible display module, the bending of the support layer 50 can be realized under the condition that the thickness of the support layer 50 is large, and the dislocation amount at the edge of the support layer 50 is small when the bendable area of the flexible display module is bent.
In this embodiment, the flexible display module assembly includes the cover plate structure described in each embodiment, when the bendable region of the flexible display module assembly is bent, the resilience force generated based on the flexible glass layer may be reduced or absent, so that the adhesion between the structures of each layer of the flexible display module assembly can be better maintained, and the damage probability of the flexible display module assembly during bending is reduced. And the misplacement of the edge of the supporting layer when the bendable region of the flexible display module is bent can be reduced, so that the probability of propping up the Pad-bonding region of the flexible display module is reduced, and accordingly, the probability of poor appearance of bright lines and the like is also reduced.
(5) Embodiments of a flexible display device
In this embodiment, the flexible display device includes the flexible display module described in the above embodiment.
The flexible display device provided in this embodiment includes the flexible display module described in the foregoing embodiment, and has the beneficial effects consistent with those of the foregoing flexible display module, which are not described herein again.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (11)
1. The cover plate structure of the flexible display module is used for covering the surface of the flexible display module, and the flexible display module is provided with a bendable area and a non-bendable area, and is characterized by comprising an organic cover plate layer and a flexible glass layer which are attached to each other;
the flexible glass layer is provided with a first part and a second part, the first part is positioned in a region corresponding to the bendable region of the flexible display module on the cover plate structure, and the second part is positioned in a region corresponding to the non-bending region of the flexible display module on the cover plate structure; the thickness of the first portion of the flexible glass layer is greater than the thickness of the second portion; or alternatively
The flexible glass layer is only arranged in the area of the cover plate structure corresponding to the non-bending area of the flexible display module;
the thickness of the first part ranges from 50 to 70 micrometers, and the thickness of the second part ranges from 30 to 50 micrometers;
the thickness of the organic cover plate layer is 60-90 micrometers.
2. The cover plate structure of the flexible display module according to claim 1, wherein a side of the flexible glass layer facing away from the organic cover plate layer is planar and parallel to the organic cover plate layer;
A portion of the flexible glass layer thicker than the second portion protrudes on a side of the flexible glass layer facing the organic cover sheet layer.
3. The cover plate structure of the flexible display module according to claim 1, wherein a side of the flexible glass layer facing the organic cover plate layer is planar and parallel to the organic cover plate layer;
a portion of the flexible glass layer thicker than the second portion protrudes on a side of the flexible glass layer facing away from the organic cover layer.
4. A cover plate structure of a flexible display module according to claim 2 or 3, further comprising a thickness filling layer, wherein the thickness filling layer is disposed on a side of the flexible glass layer where the first portion protrudes, and a thickness of a region of the thickness filling layer corresponding to the first portion is smaller than a thickness of a region corresponding to the second portion, such that a side of the thickness filling layer facing away from the flexible glass layer is a plane parallel to the organic cover plate layer.
5. The cover structure of claim 4, wherein the thickness filling layer is an adhesive layer or a paint layer.
6. The cover plate structure of claim 1, wherein a corner-filling structure is formed at a junction of the first portion and the second portion of the flexible glass layer, and the corner-filling structure is arc-shaped.
7. The cover plate structure of a flexible display module according to claim 1, wherein the thickness of the second portion of the flexible glass layer is a fixed value, or
The thickness of the second portion of the flexible glass layer has a gradual gradient, and the thickness of the second portion is smaller at a position farther from the first portion and is larger at a position nearer to the first portion.
8. The cover plate structure of the flexible display module according to claim 1, wherein the flexible glass layer is only arranged in a region of the cover plate structure corresponding to the non-bending region of the flexible display module, and a filling layer arranged in the same layer as the flexible glass layer is arranged in a region of the cover plate structure corresponding to the bendable region of the flexible display module.
9. A flexible display module, characterized in that the flexible display module comprises the cover plate structure of the flexible display module according to any one of claims 1 to 8.
10. The flexible display module of claim 9, further comprising a display panel and a support layer, the support layer and cover plate structure being disposed on either side of the display panel, respectively;
the support layer and the area corresponding to the bendable area of the flexible display module are provided with hollowed-out patterns.
11. A flexible display device comprising the flexible display module of claim 9 or 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210002254.1A CN114333594B (en) | 2022-01-04 | 2022-01-04 | Cover plate structure of flexible display module, flexible display module and flexible display equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210002254.1A CN114333594B (en) | 2022-01-04 | 2022-01-04 | Cover plate structure of flexible display module, flexible display module and flexible display equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114333594A CN114333594A (en) | 2022-04-12 |
| CN114333594B true CN114333594B (en) | 2024-10-29 |
Family
ID=81022934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210002254.1A Active CN114333594B (en) | 2022-01-04 | 2022-01-04 | Cover plate structure of flexible display module, flexible display module and flexible display equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114333594B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117082896B (en) * | 2023-08-31 | 2024-09-06 | 长沙惠科光电有限公司 | Display panel and display device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111627323A (en) * | 2020-06-28 | 2020-09-04 | 京东方科技集团股份有限公司 | Film laminating structure, display structure and display device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108962028B (en) * | 2018-07-10 | 2020-03-31 | 云谷（固安）科技有限公司 | Flexible display screen cover plate, flexible display module and flexible display device |
| CN209625665U (en) * | 2019-01-08 | 2019-11-12 | 昆山工研院新型平板显示技术中心有限公司 | Flexible die group, display module and display equipment |
| CN110047393A (en) * | 2019-04-28 | 2019-07-23 | 武汉华星光电半导体显示技术有限公司 | A kind of cover board of bent display panel, bent display panel and display device |
| CN110379306A (en) * | 2019-06-10 | 2019-10-25 | 武汉华星光电半导体显示技术有限公司 | A kind of cover board of bent display panel, bent display panel and display device |
| CN112185247A (en) * | 2019-07-03 | 2021-01-05 | 华为技术有限公司 | Flexible display cover plate, flexible display module and flexible display device |
| CN210349107U (en) * | 2019-10-31 | 2020-04-17 | 昆山工研院新型平板显示技术中心有限公司 | Flexible display cover plate, flexible display module and flexible display device |
| CN111453984A (en) * | 2020-05-14 | 2020-07-28 | 恩利克（浙江）智能装备有限公司 | Manufacturing method and structure for improving flexibility of ultrathin glass mobile phone cover plate |
| CN113393774A (en) * | 2021-07-27 | 2021-09-14 | 京东方科技集团股份有限公司 | Flexible cover plate and flexible display device |
-
2022
- 2022-01-04 CN CN202210002254.1A patent/CN114333594B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111627323A (en) * | 2020-06-28 | 2020-09-04 | 京东方科技集团股份有限公司 | Film laminating structure, display structure and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114333594A (en) | 2022-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111477670B (en) | Display device | |
| US11892879B2 (en) | Rollable display device and rollable device | |
| CN111063262B (en) | Flexible display module and manufacturing method thereof | |
| WO2021031074A1 (en) | Flexible display device and manufacturing method therefor | |
| US20240206281A1 (en) | Foldable display device and fabricating method thereof | |
| KR20180138249A (en) | Panel bottom sheet and display including the same | |
| US11782541B2 (en) | Touch panel and display device | |
| CN110718159A (en) | OLED display screen and OLED display device | |
| CN113658511B (en) | Flexible folding display module and mobile terminal | |
| CN107908308B (en) | Flexible display module and manufacturing method thereof | |
| CN114333594B (en) | Cover plate structure of flexible display module, flexible display module and flexible display equipment | |
| CN112967604A (en) | Flexible display module and display device | |
| JP2015230401A (en) | Display device | |
| CN115206189B (en) | Display device and display terminal | |
| CN112396960A (en) | Buffer layer and display device | |
| TWI596529B (en) | Transparent capacitive touch panel and electrode structure thereof | |
| TWI402736B (en) | Transparent capacitive touch panel and electrode structure thereof | |
| KR101308453B1 (en) | Shock absorption pad and method for manufacturing it | |
| CN115132089B (en) | Display module and display device | |
| CN216697673U (en) | Display module and display device | |
| CN117116141B (en) | Display module assembly and electronic equipment | |
| CN113377233B (en) | Foldable touch module and foldable display device | |
| CN220855634U (en) | Display module and electronic equipment | |
| CN118098076A (en) | Display module | |
| CN116129743A (en) | Display module, preparation method thereof and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |