CN113724597B - Display module and display device - Google Patents
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- CN113724597B CN113724597B CN202111012914.6A CN202111012914A CN113724597B CN 113724597 B CN113724597 B CN 113724597B CN 202111012914 A CN202111012914 A CN 202111012914A CN 113724597 B CN113724597 B CN 113724597B
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- 239000003292 glue Substances 0.000 claims abstract description 65
- 238000005452 bending Methods 0.000 claims abstract description 56
- 239000012790 adhesive layer Substances 0.000 claims abstract description 36
- 239000010410 layer Substances 0.000 claims abstract description 22
- 239000002346 layers by function Substances 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 11
- 239000011148 porous material Substances 0.000 claims 1
- 238000009825 accumulation Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 45
- 238000000034 method Methods 0.000 description 14
- 230000000149 penetrating effect Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 230000007547 defect Effects 0.000 description 7
- 238000001179 sorption measurement Methods 0.000 description 7
- 230000005484 gravity Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002096 quantum dot Substances 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The present disclosure provides a display module assembly and display device, wherein, the display module assembly includes: the display panel comprises a display area and a bending area positioned at the periphery of the display area; a laminated structure disposed on the light-emitting side of the display region; the glue layer is arranged on one side of the bending area and is provided with a first area and a second area, the first area is in contact with the laminated structure, and the thickness of the first area is larger than that of the second area. By arranging the adhesive layer on one side of the bending region, and the thickness of the first region is larger than that of the second region, on one hand, the contact area between the adhesive layer and the laminated structure of the display region can be increased, so that the stress at the junction of the display region and the bending region can be effectively dispersed, the accumulation of the stress is avoided, the occurrence probability of poor cracks at the junction is reduced, and the product yield is improved; on the other hand, since the thickness of the second region is thin, it can be ensured that the bending performance of the second region is not affected.
Description
Technical Field
The disclosure relates to the field of display technologies, and in particular, to a display module and a display device.
Background
Along with the vigorous development of science and technology, the flexible display panel gradually realizes mass production and productization. In order to reduce the size of the bezel, a bending region of the flexible display panel is typically bent to bind the circuit board at the back side.
Disclosure of Invention
The disclosure provides a display module and a display device to improve the product yield.
The present disclosure provides a display module assembly, the display module assembly includes:
the display panel comprises a display area and a bending area positioned at the periphery of the display area;
a laminated structure disposed on the light-emitting side of the display region;
the glue layer is arranged on one side of the bending area, the glue layer is provided with a first area and a second area, the first area is in contact with the laminated structure, and the thickness of the first area is larger than that of the second area.
In an alternative implementation, the laminated structure includes:
the display panel comprises an adhesive layer and a functional layer which are stacked, wherein the adhesive layer is arranged close to the display panel;
the functional layer comprises a substrate which is arranged close to the bonding layer, the substrate is provided with a protruding portion protruding relative to the bonding layer, the orthographic projection of the protruding portion on the display panel covers the orthographic projection of the first area on the display panel, the protruding portion is provided with a through hole, and the through hole penetrates through the surface of the protruding portion, which is close to one side of the display panel, and the surface, which is away from one side of the display panel.
In an alternative implementation, the adhesive layer contacts a surface of the protrusion near a side of the display panel.
In an alternative implementation manner, the through hole has a first opening area and a second opening area, the first opening area is located at one side of the second opening area close to the display panel, and the area of the first opening area is smaller than or equal to the area of the second opening area.
In an alternative implementation manner, the protruding portion is provided with a plurality of through holes arranged in an array.
In an optional implementation manner, the array arrangement direction of the plurality of through holes includes at least one of the following: the display area is oriented in the direction of the bending area and along the boundary line between the display area and the bending area.
In an alternative implementation, the sum of the minimum distance between two adjacent through holes and the aperture of a first through hole is greater than or equal to 50 micrometers and less than or equal to 120 micrometers, and the first through hole is any one of the two adjacent through holes.
In an alternative implementation, the aperture of the through-hole is greater than or equal to 50 microns and less than or equal to 120 microns.
In an alternative implementation, the width of the protrusion is greater than or equal to 100 microns and less than or equal to 200 microns in a direction of the display region toward the bending region.
In an alternative implementation manner, an included angle between a center line of the through hole and a surface of the protrusion portion near one side of the display panel is greater than 45 ° and less than 90 °;
the center line is a connecting line between the center of the hole bottom and the center of the hole top of the through hole, the hole top is positioned on the surface of the protruding portion, which is away from one side of the display panel, the hole bottom is positioned on the surface of the protruding portion, which is close to one side of the display panel, the minimum distance between the edge of the hole bottom and the first surface of the protruding portion is smaller than the minimum distance between the edge of the hole top and the first surface, and the first surface is connected with the surface of the protruding portion, which is close to one side of the display panel, and the surface, which is away from one side of the display panel, and is close to the bending area.
In an alternative implementation, the minimum distance between the hole bottom edge and the first surface is less than or equal to 20 microns.
In an alternative implementation, the functional layer is a touch functional layer.
In an alternative implementation, the material of the glue layer is UV glue.
The disclosure provides a display device, including any one of the display modules.
Compared with the prior art, the method has the following advantages:
according to the technical scheme, the adhesive layer is arranged on one side of the bending area, and the thickness of the first area is larger than that of the second area, so that on one hand, the first area is in contact with the laminated structure and has larger thickness, and the contact area between the adhesive layer and the laminated structure of the display area can be increased, and therefore the stress at the junction of the display area and the bending area can be effectively dispersed, stress accumulation is avoided, the occurrence probability of crack defects at the junction is reduced, and the product yield is improved; on the other hand, since the thickness of the second region is thin, it can be ensured that the bending performance of the second region is not affected.
The foregoing description is merely an overview of the technical solutions of the present disclosure, and may be implemented according to the content of the specification in order to make the technical means of the present disclosure more clearly understood, and in order to make the above and other objects, features and advantages of the present disclosure more clearly understood, the following specific embodiments of the present disclosure are specifically described.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the related art, a brief description will be given below of the drawings required for the embodiments or the related technical descriptions, and it is obvious that the drawings in the following description are some embodiments of the present disclosure, and other drawings may be obtained according to the drawings without any inventive effort for a person of ordinary skill in the art. It should be noted that the scale in the drawings is merely schematic and does not represent actual scale.
Fig. 1 schematically shows a schematic cross-sectional structure of a display module of the related art;
fig. 2 schematically illustrates a schematic cross-sectional structure of a display module provided by the present disclosure;
FIG. 3 schematically illustrates a schematic of a dispensing process;
fig. 4 schematically illustrates a schematic cross-sectional structure of another display module provided by the present disclosure;
fig. 5 schematically shows a schematic of a liquid glue application flow;
FIG. 6 schematically illustrates a force analysis schematic of a liquid glue;
fig. 7 schematically illustrates a schematic plan structure of a display module provided by the present disclosure.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are some embodiments of the present disclosure, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure are intended to be within the scope of this disclosure.
In the related art, as shown in fig. 1, an adhesive layer 11 is generally coated on a bending region of a display panel 10 to reduce the probability of occurrence of cracking defects in the bending region during bending. However, in the actual production process, the display panel 10 coated with the adhesive layer 11 still has a lot of crack defects, and the inventor analyzes the defective positions to find that the crack defects mainly occur at the boundary between the display area and the bending area of the display panel 10, as indicated by the arrow in fig. 1.
The inventor analyzes the occurrence mechanism of the crack defect at the junction, and finds that the stress is concentrated at the junction of the display area and the bending area, the thickness of the adhesive layer 11 at the junction is thinner, and the contact area between the adhesive layer 11 and the structure 12 positioned in the display area is smaller, so that the bending stress at the junction cannot be effectively dispersed, and the crack defect frequently occurs.
In order to solve the above-mentioned problems, an embodiment of the present disclosure provides a display module, and a schematic cross-sectional structure of the display module is schematically shown with reference to fig. 2. As shown in fig. 2, the display module includes:
the display panel 20 includes a display area AA and a bending area BA located at the periphery of the display area AA;
a laminated structure 21 disposed on the light emitting side of the display area AA;
the adhesive layer 22 is disposed on one side of the bending area BA, the adhesive layer 22 has a first area A1 and a second area A2, the first area A1 is disposed in contact with the laminated structure 21, and the thickness of the first area A1 is greater than the thickness of the second area A2.
Wherein the glue layer 22 and the laminated structure 21 are located on the same side of the display panel 20. The glue layer 22 is in contact with the side of the laminate structure 21 adjacent to the bending area BA.
According to the display module provided by the embodiment, the adhesive layer 22 is arranged on one side of the bending area BA, and the thickness of the first area A1 is larger than that of the second area A2, on one hand, as the first area A1 is in contact with the laminated structure 21 and the first area A1 has larger thickness, the contact area between the adhesive layer 22 and the laminated structure 21 of the display area AA can be increased, so that the stress at the junction of the display area AA and the bending area BA can be effectively dispersed, stress accumulation is avoided, the occurrence probability of poor cracks at the junction is reduced, and the product yield is improved; on the other hand, since the thickness of the second region A2 is thin, it can be ensured that the bending performance of the second region A2 is not affected.
In this embodiment, the material of the adhesive layer 22 may be, for example, UV adhesive, which is not limited in this embodiment.
The display panel 20 may be, for example, a flexible display panel having an Organic Light-Emitting Diode (OLED), a quantum dot Light-Emitting Diode (Quantum Dot Light-Emitting Diode), or the like, which is not particularly limited in this embodiment.
The inventors have also found that a display module as shown in fig. 2 is not obtainable based on a conventional glue dispensing process. The reasons are as follows: the glue layer 22 in fig. 2 may be formed by injecting the liquid glue from the glue nozzle of the glue application device into the bending area BA, and then curing the liquid glue. As shown in fig. 3, since there is a limit of the minimum non-interference distance between the glue nozzle of the glue application device and the laminated structure 21 of the display area AA, the glue nozzle cannot be infinitely close to the laminated structure 21 of the display area AA, and thus a glue layer 22 of a large thickness cannot be formed in the first area A1. In addition, even without limitation of the glue application nozzle, when a large amount of liquid glue is instilled into the first area, the liquid glue itself has a large fluidity, and in a natural state, with accumulation of the liquid glue, a flat state is gradually formed in the bending area BA, and the glue layer 22 with a large thickness cannot be formed in the first area A1.
In order to obtain a display module as shown in fig. 2, in an alternative implementation, a schematic cross-sectional structure of another display module is schematically shown with reference to fig. 4. As shown in fig. 4, the laminated structure 21 includes: the adhesive layer 41 and the functional layer are laminated, and the adhesive layer 41 is provided close to the display panel 20.
Wherein the functional layer comprises a substrate 42 arranged near the adhesive layer 41, the substrate 42 is provided with a protruding part 43 protruding relative to the adhesive layer 41, the front projection of the protruding part 43 on the display panel 20 covers the front projection of the first area A1 on the display panel 20, the protruding part 43 is provided with a through hole 44, and the through hole 44 penetrates through the surface of the protruding part 43 near the side of the display panel 20 and the surface far away from the side of the display panel 20.
The material of the adhesive layer 41 may be, for example, optical adhesive (Optically Clear Adhesive, OCA) or the like, and this embodiment is not limited thereto. The adhesive layer 41 is used to attach the display panel 20 and the substrate 42 together.
In this implementation manner, the functional layer may be, for example, a touch functional layer, which is not limited in this embodiment. The functional layer substrate 42 may be an organic film such as a PET film, for example, and the present embodiment is not limited thereto.
The protruding portion 43 is a portion of the substrate 42 protruding toward the bending area BA with respect to the adhesive layer 41. The projections 43 of the substrate 42 and the orthographic projections of the adhesive layer 41 on the display panel 20, respectively, may not overlap.
In a specific implementation, the through hole 44 may be formed on the protruding portion 43 by means of laser drilling, for example, and the inclination angle of the laser head used for laser drilling determines the penetrating direction of the through hole 44. The penetrating direction of the through hole 44 intersects with the surface of the protruding portion 43 near the side of the display panel 20, and the included angle between the penetrating direction and the surface can be set according to actual requirements.
As shown in fig. 4, an angle β3 between the center line of the through hole 44 and the surface of the protrusion 43 near the display panel 20 may be set according to practical requirements. Wherein the center line is the line between the center of the hole bottom and the center of the hole top of the through hole 44, the hole top is located on the surface of the protruding portion 43 on the side facing away from the display panel 20, and the hole bottom is located on the surface of the protruding portion 43 on the side facing the display panel 20.
In order to explain the solution provided by this implementation, a capillary phenomenon will be first described. When the thin tubular object is inserted into the liquid, the liquid contacts the thin tubular object, and since the adhesion between the liquid and the solid (the tube wall) is greater than the cohesion of the liquid itself, the phenomenon that the liquid can move upward along the tube wall against the gravitational force is called capillary phenomenon, also called capillary action. For example: the capillary tube is inserted into the immersion liquid, and the liquid level in the tube rises and is higher than the liquid level outside the tube.
The liquid glue is subjected to force analysis by combining the capillary phenomenon, and as shown in fig. 6, when the liquid glue is initially contacted with the through hole 44, the liquid glue is subjected to the adsorption force F of the hole wall Adhesion force Can be decomposed into component forces F in the horizontal direction 1 And component force F in the vertical direction 2 The method comprises the following steps:
F 1 ＝F adhesion force ·cosβ
F 2 ＝F Adhesion force ·sinβ
Wherein the component force F in the horizontal direction 1 The direction of (2) is related to the penetrating direction of the through hole 44, i.e. the angle beta between the center line of the through hole 44 and the surface of the protrusion 43 on the side of the display panel 20, the component force F in the vertical direction 2 Is the direction of the bending area BA toward the protruding portion 43.
In addition, the liquid glue moves upwards along the hole wall in the through hole 44 and is also subjected to self gravity G Gravity force And friction force f Friction force Gravity G at the beginning of contact Gravity force And friction force f Friction force Much smaller than the adhesion F Adhesion force The method comprises the following steps:
F 1 ＞＞f friction force ·cosβ
F 2 ＞＞f Friction force ·sinβ+G Gravity force
Thus, the component force F of the liquid glue in the vertical direction 2 Will move upwardly along the direction of penetration of the through-hole 44.
When the liquid glue fills the entire through hole 44, the entire system reaches an equilibrium state, i.e. F Adhesion force ＝f Friction force +G Gravity force 。
A schematic flow chart of the glue line application is schematically shown with reference to fig. 5. As shown in fig. 5, the formation of the glue layer 22 from the start of coating to curing can be divided into four stages:
the first stage: the glue application is started, and a glue application nozzle of the glue application device applies liquid glue to the bending area, as shown in fig. 5 (1). In a specific implementation, the distance between the glue spreading nozzle and the protruding part can be determined through experiments, so that the dripping position of the liquid glue is ensured to be close to the protruding part (such as dripping along the edge of the protruding part), and the liquid glue cannot be dripped on the protruding part.
And a second stage: the liquid glue gradually gathers, and because the mobility of the liquid glue is strong, the liquid glue flows to one side close to the bonding layer, and when the liquid glue contacts the bottom of the through hole, the through hole generates initial adsorption to the liquid glue, as shown in (2) in fig. 5;
and a third stage: under the capillary action of the through hole, the liquid glue can be adsorbed by the hole wall, and under the action of the adsorption force, the liquid glue can move upwards along the penetrating direction of the through hole, as shown in (3) in fig. 5;
fourth stage: and (5) finishing the coating of the liquid glue, and curing to form a glue layer. As shown in fig. 5 (4), if the material of the adhesive layer is UV adhesive, the adhesive layer may be formed by curing with UV light irradiation, so as to obtain the display module shown in fig. 4.
According to the display module provided by the implementation manner, through the through holes 44 are formed in the protruding portions 43 protruding from the substrate 42 relative to the bonding layer 41, when liquid glue is dripped onto the bending areas BA and contacts with the bottoms of the through holes 44, the liquid glue moves upwards along the penetrating direction of the through holes 44 under the capillary action of the through holes 44, and the liquid glue on the bending areas BA moves towards the direction close to the protruding portions 43, so that the glue layer 22 with a larger thickness can be formed on the first area A1 corresponding to the protruding portions 43.
As shown in fig. 4, the adhesive layer 22 contacts the surface of the protrusion 43 near the side of the display panel 20. Specifically, since the liquid adhesive on the bending area BA moves in a direction approaching the protrusion 43, the adhesive layer 22 formed after the solidification of the liquid adhesive is closely adhered and bonded to the surface of the protrusion 43 on the side approaching the display panel 20. In this way, when the bending area BA is bent, the stress generated during bending can be conducted to the protruding portion 43 through the adhesive layer 22, and when the protruding portion 43 is made of an organic film, the strength of the organic film is enough to bear such stress release, so compared with the solution (as shown in fig. 2) that the thickness of the first area A1 is simply increased, the stress dispersing effect can be further improved, and the occurrence probability of cracking failure can be reduced.
As shown in fig. 4, the protruding portion 43 has a first surface a, and the first surface a is respectively connected to a surface of the protruding portion 43 on a side close to the display panel 20 and a surface of the protruding portion on a side away from the display panel 20, and is close to the bending area BA.
To ensure movement of the liquid glue in a direction towards the adhesive layer 41, in an alternative implementation, as shown in fig. 4, the angle between the centre line of the through hole 44 and the surface of the protrusion 43 on the side of the display panel 20 may be greater than 0 ° and less than or equal to 90 °, and the minimum distance d1 between the hole bottom edge and the first surface a of the protrusion 43 is smaller than the minimum distance d2 between the hole top edge and the first surface.
In this embodiment, the liquid glue is subjected to an adsorption force F by capillary action of the through hole 44 Adhesion force Component force F in horizontal direction 1 Is the direction of the bending area BA towards the display area AA, and therefore in this component F 1 Under the action of the above, the liquid adhesive moves from the bending area BA to the direction close to the adhesive layer 41, so that the contact area between the first area A1 and the adhesive layer 41 can be further increased, the effect of stress dispersion is improved, and the occurrence rate of crack defects is reduced. In addition, as the distance d1 between the edge of the hole bottom and the first surface is smaller, the distance between the hole bottom and the gluing nozzle can be shortened, and the liquid glue dripped from the gluing nozzle can be ensured to contact with the hole bottom as soon as possible, so that the through hole 44 has an adsorption effect on the liquid glue.
To further increase the thickness of the glue layer 22 of the first area A1, in an alternative implementation, the angle β between the center line of the through hole 44 and the surface of the protrusion 43 on the side close to the display panel 20 may be greater than 45 ° and less than 90 °. In this way, the component force F in the vertical direction can be ensured 2 Greater than the component force F in the horizontal direction 1 The thickness of the adhesive layer 22 of the first area A1 can be increased accordingly.
In an alternative implementation, the minimum distance d1 between the hole bottom edge and the first surface a may be less than or equal to 20 micrometers. The distance may be determined by combining the glue dropping device with the manufacturing process of the through hole 44, so long as the contact between the liquid glue and the bottom of the hole can be ensured, so that the through hole 44 has an adsorption effect on the liquid glue, and the specific numerical value of the embodiment is not limited.
In an alternative implementation, the through hole 44 has a first opening region and a second opening region, the first opening region being located at a side of the second opening region near the display panel 20, and an area of the first opening region being smaller than or equal to an area of the second opening region.
The area of the first opening area is equal to that of the second opening area, namely, the opening sizes of the first opening area and the second opening area are the same. Further, the area of any two opening regions of the through hole 44 in the penetrating direction may be the same, as shown in fig. 4.
The area of the first opening area is smaller than that of the second opening area, that is, the area of the opening area of the through hole 44 near the display panel 20 is smaller than that of the opening area far from the display panel 20 in the penetrating direction. Further, the opening area of the through hole 44 gradually increases along the penetrating direction from the bottom of the hole to the top of the hole. This enhances the capillary effect, increases the adsorption force of the through hole 44 on the liquid glue, and further increases the thickness of the glue layer 22 formed at the junction of the display area AA and the bending area BA.
In this embodiment, one or more through holes 44 may be provided on the protruding portion 43, which is not limited in this embodiment. In an alternative implementation, referring to fig. 7, a schematic plan view of an array of through holes 44 is schematically shown, and the protruding portion 43 has a plurality of through holes 44 arranged in an array.
In this embodiment, the plurality of through holes 44 are arranged in an array on the protruding portion 43. In a specific implementation, one or more rows, one or more columns of through holes 44 may be disposed on the protruding portion 43, and the number of rows and columns of through holes 44 is not limited in this embodiment.
Alternatively, the array arrangement direction of the plurality of through holes 44 may include at least one of: the display area AA faces the direction of the bending area BA and the direction along the boundary line between the display area AA and the bending area BA as shown in fig. 7.
The display area AA faces the bending area BA, i.e. is perpendicular to the boundary line between the display area AA and the bending area BA.
Specifically, the plurality of through holes 44 may be arrayed along the display area AA toward the bending area BA; it may also be arranged in an array along the direction of the boundary line between the display area AA and the bending area BA, as shown in fig. 7; it is also possible to arrange in an array along the direction of the display area AA toward the bending area BA and the direction of the boundary line of the display area AA and the bending area BA.
It should be noted that, the arrangement of the plurality of through holes 44 on the protruding portion 43 is not limited to the array arrangement, the array arrangement direction is not limited to the above-mentioned direction, and the specific arrangement of the plurality of through holes 44 on the protruding portion 43 can be designed according to the actual requirement.
In an alternative implementation, the aperture of the through hole 44 may be greater than or equal to 50 microns and less than or equal to 120 microns, and the embodiment is not limited to the aperture of the through hole 44. Wherein the aperture of the through-hole 44, i.e. the diameter phi of the through-hole 44, is shown in fig. 7. When the plurality of through holes 44 are provided on the protruding portion 43, the aperture of each through hole 44 may be the same or different, which is not limited in this embodiment.
When the plurality of through holes 44 are provided on the protruding portion 43, the sum of the minimum distance d3 between two adjacent through holes 44 and the aperture of the first through hole 44 is greater than or equal to 50 micrometers and less than or equal to 120 micrometers. Wherein the first through hole 44 is any one of two adjacent through holes 44. The other of the adjacent two through holes 44 is a second through hole 44.
For example, the aperture of the first through hole 44 is 50 micrometers, the minimum distance d3 between the first through hole 44 and the second through hole 44 is 50 micrometers, and the sum of the minimum distance d3 between the first through hole 44 and the second through hole 44 and the aperture of the first through hole 44 is 50+50=100 micrometers, which satisfies the above requirements.
When the plurality of through holes 44 are provided on the protruding portion 43, the minimum distance d3 between any adjacent two of the through holes 44 may be the same or different, which is not limited in this embodiment.
In an alternative implementation, as shown in fig. 7, in the direction of the display area AA toward the bending area BA, the width L of the protruding portion 43 may be greater than or equal to 100 micrometers and less than or equal to 200 micrometers, which is not limited in this embodiment.
Along the penetrating direction of the through hole 44, the cross-sectional shape of the through hole 44 may be a circle (as shown in fig. 7), or may be a regular pattern or an irregular pattern such as a triangle, a quadrangle, an ellipse, a pentagon, a hexagon, etc., and the cross-sectional shape of the through hole 44 is not limited in the present disclosure.
The disclosure also provides a display device, which includes the display module set according to any embodiment.
Note that, the display device in this embodiment may be: electronic paper, mobile phone, tablet computer, television, notebook computer, digital photo frame, navigator and any other product or component with 2D or 3D display function.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.
Finally, it is further noted that 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 has described in detail a display module and a display device provided by the present disclosure, and specific examples have been applied herein to illustrate the principles and embodiments of the present disclosure, where the foregoing examples are only for aiding in understanding the methods of the present disclosure and the core ideas thereof; meanwhile, as one of ordinary skill in the art will have variations in the detailed description and the application scope in light of the ideas of the present disclosure, the present disclosure should not be construed as being limited to the above description.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Reference herein to "one embodiment," "an embodiment," or "one or more embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. Furthermore, it is noted that the word examples "in one embodiment" herein do not necessarily all refer to the same embodiment.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the disclosure may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The disclosure may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names.
Finally, it should be noted that: the above embodiments are merely for illustrating the technical solution of the present disclosure, and are not limiting thereof; although the present disclosure has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present disclosure.
Claims (13)
1. A display module, characterized in that the display module comprises:
the display panel comprises a display area and a bending area positioned at the periphery of the display area;
a laminated structure disposed on the light-emitting side of the display region;
the adhesive layer is arranged on one side of the bending area and is provided with a first area and a second area, the first area is in contact with the laminated structure, and the thickness of the first area is larger than that of the second area;
the laminated structure includes:
the display panel comprises an adhesive layer and a functional layer which are stacked, wherein the adhesive layer is arranged close to the display panel;
the functional layer comprises a substrate which is arranged close to the bonding layer, the substrate is provided with a protruding portion protruding relative to the bonding layer, the orthographic projection of the protruding portion on the display panel covers the orthographic projection of the first area on the display panel, the protruding portion is provided with a through hole, and the through hole penetrates through the surface of the protruding portion, which is close to one side of the display panel, and the surface, which is away from one side of the display panel.
2. The display module assembly of claim 1, wherein the glue layer contacts a surface of the protrusion adjacent to a side of the display panel.
3. The display module of claim 1, wherein the through hole has a first opening area and a second opening area, the first opening area is located at a side of the second opening area near the display panel, and an area of the first opening area is smaller than or equal to an area of the second opening area.
4. The display module assembly of claim 1, wherein the protrusion has a plurality of the through holes arranged in an array.
5. The display module of claim 4, wherein the array arrangement direction of the plurality of through holes comprises at least one of: the display area is oriented in the direction of the bending area and along the boundary line between the display area and the bending area.
6. The display module of claim 4, wherein a sum of a minimum distance between two adjacent through holes and a pore diameter of a first through hole is greater than or equal to 50 micrometers and less than or equal to 120 micrometers, the first through hole being any one of the two adjacent through holes.
7. The display module of any one of claims 1 to 6, wherein the aperture of the through hole is greater than or equal to 50 microns and less than or equal to 120 microns.
8. The display module of any one of claims 1 to 6, wherein the width of the protrusion is greater than or equal to 100 microns and less than or equal to 200 microns in a direction of the display area toward the bending area.
9. The display module according to any one of claims 1 to 6, wherein an angle between a center line of the through hole and a surface of the protrusion on a side close to the display panel is greater than 45 ° and less than 90 °;
the center line is a connecting line between the center of the hole bottom and the center of the hole top of the through hole, the hole top is positioned on the surface of the protruding portion, which is away from one side of the display panel, the hole bottom is positioned on the surface of the protruding portion, which is close to one side of the display panel, the minimum distance between the edge of the hole bottom and the first surface of the protruding portion is smaller than the minimum distance between the edge of the hole top and the first surface, and the first surface is connected with the surface of the protruding portion, which is close to one side of the display panel, and the surface, which is away from one side of the display panel, and is close to the bending area.
10. The display module of claim 9, wherein a minimum distance between the aperture bottom edge and the first surface is less than or equal to 20 microns.
11. The display module of any one of claims 1 to 6, wherein the functional layer is a touch functional layer.
12. The display module of claim 1, wherein the glue layer is made of UV glue.
13. A display device comprising the display module of any one of claims 1 to 12.
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| CN114241907B (en) * | 2021-12-09 | 2023-10-31 | 深圳市华星光电半导体显示技术有限公司 | Display panel and display device |
| CN114495719A (en) * | 2022-01-27 | 2022-05-13 | 武汉天马微电子有限公司 | Display device |
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