CN111816692B - Array substrate, display panel and manufacturing method thereof - Google Patents
Array substrate, display panel and manufacturing method thereof Download PDFInfo
- Publication number
- CN111816692B CN111816692B CN202010899160.XA CN202010899160A CN111816692B CN 111816692 B CN111816692 B CN 111816692B CN 202010899160 A CN202010899160 A CN 202010899160A CN 111816692 B CN111816692 B CN 111816692B
- Authority
- CN
- China
- Prior art keywords
- area
- groove
- region
- array substrate
- grooves
- 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
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
Landscapes
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention provides an array substrate, a display panel and a manufacturing method thereof, belongs to the technical field of display equipment, and aims to solve the problem of how to avoid coating solution accumulated on one side of a binding region from flowing into the binding region; the first groove is provided with an elastic filling layer containing heat-shrinkable particles. Wherein, the heat-shrinkable particles are heated and changed to form a second groove on the surface of the elastic filling layer, so that the redundant coating solution can be contained in the second groove. The array substrate, the display panel and the manufacturing method thereof provided by the invention can eliminate redundant coating solution positioned on one side of the binding region, and avoid the phenomenon that the subsequent binding process is influenced by the coating solution flowing into the binding region.
Description
Technical Field
The invention relates to the technical field of display equipment, in particular to an array substrate, a display panel and a manufacturing method of the array substrate.
Background
The flexible polarizer is an indispensable and important component of the display panel, and a coating solution for manufacturing the flexible polarizer can be coated on the display panel body by adopting a coating mode.
The display screen body comprises an array substrate and a light-emitting device layer, wherein the array substrate comprises a display area and a peripheral non-display area, the non-display area comprises a binding area opposite to the display area, and a coating area of a coating solution covers the display area, namely the generated flexible polarizer covers the surface of the display area; when the coating solution is applied to the surface of the display region, an excess of the coating solution is accumulated on the side of the display region close to the binding region.
However, since the distance between the bonding region and the display region is small, an excessive coating solution may flow into the bonding region, thereby affecting a subsequent bonding process.
Disclosure of Invention
The embodiment of the invention provides an array substrate, a display panel and a manufacturing method thereof, which can eliminate redundant coating solution positioned on one side of a binding region and avoid the phenomenon that the subsequent binding process is influenced by the fact that the coating solution flows into the binding region.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides an array substrate, where the array substrate is divided into a display area, a binding area, and a transition area located between the display area and the binding area; the transition area is provided with a wiring area and at least one first groove, and an elastic filling layer containing heat shrinkable particles is arranged in the first groove.
In an optional embodiment, the transition region is provided with a plurality of the first grooves, and the plurality of the first grooves are arranged in the transition region in an array;
in an optional embodiment, the routing area is arranged in an area between two adjacent columns of the first grooves.
In an optional embodiment, the transition region is provided with a plurality of first grooves arranged in parallel, and a length direction of each first groove extends along a direction from the display region to the binding region;
in an optional embodiment, the routing area is arranged in an area between two adjacent first grooves.
In an optional embodiment, the first groove is partially overlapped with the routing area, a supporting layer is arranged in the overlapped area of the first groove and the routing area, and the elastic filling layer containing the heat-shrinkable particles is arranged in the non-overlapped area of the first groove and the routing area;
in an alternative embodiment, the transition region is provided with a plurality of first grooves arranged in parallel, and the length direction of each first groove is parallel to a boundary formed between the transition region and the display region; at least one supporting layer and at least one elastic filling layer containing heat-shrinkable particles are arranged in each first groove at intervals;
in an alternative embodiment, the spacing distance between two adjacent first grooves gradually decreases along the direction from the display area to the binding area.
In an alternative embodiment, the elastomeric filling layer comprises a base material and heat-shrinkable particles distributed in the base material, wherein the base material is a thermoplastic elastomer and the heat-shrinkable particles are polyethylene or polyvinyl chloride.
In a second aspect, an embodiment of the present invention provides a display panel, including an array substrate, a light emitting device layer, and a functional layer, which are stacked; the array substrate is divided into a display area, a binding area and a transition area between the display area and the binding area; the transition area is provided with a wiring area and at least one first groove, an elastic filling layer containing heat-shrinkable particles is arranged in the first groove, and a second groove is formed on the surface of the elastic filling layer; the light emitting device layer is positioned above the display area of the array substrate; the functional layer is located above the light-emitting device layer and extends to the transition region of the array substrate, and the functional layer is filled in the second groove.
In an optional embodiment, the transition region is provided with a plurality of the first grooves, and the plurality of the first grooves are arranged in the transition region in an array; preferably, the routing area is arranged in an area between two adjacent columns of the first grooves;
in an optional embodiment, the transition region is provided with a plurality of first grooves arranged in parallel, and a length direction of each first groove extends along a direction from the display region to the binding region; preferably, the routing area is arranged in an area between two adjacent first grooves;
in an optional embodiment, the first groove is partially overlapped with the routing area, a supporting layer is arranged in the overlapped area of the first groove and the routing area, and the elastic filling layer containing the heat-shrinkable particles is arranged in the non-overlapped area of the first groove and the routing area;
in an alternative embodiment, the transition region is provided with a plurality of first grooves arranged in parallel, and the length direction of each first groove is parallel to a boundary formed between the transition region and the display region; at least one supporting layer and at least one elastic filling layer containing heat-shrinkable particles are arranged in each first groove at intervals;
in an alternative embodiment, the spacing distance between two adjacent first grooves gradually decreases along the direction from the display area to the binding area.
In an alternative embodiment, the functional layer is a flexible polarizer.
In a third aspect, an embodiment of the present invention provides a method for manufacturing a display panel, including the following steps: providing an array substrate, wherein the array substrate comprises a display area, a binding area and a transition area positioned between the display area and the binding area; a wiring area and at least one first groove are arranged in the transition area; an elastic filling layer containing heat-shrinkable particles is arranged in the first groove; forming a light emitting device layer on a surface of the array substrate; and coating a coating solution for forming a functional layer above the light-emitting device layer, and simultaneously carrying out heat treatment on the transition region to form a second groove on the surface of the elastic filling layer, wherein the second groove is used for accommodating redundant coating solution.
In an alternative embodiment, the preparation method of the elastic filling layer containing the heat-shrinkable particles comprises the following steps: filling thermoplastic elastic materials containing heat-shrinkable particles in the first groove by adopting a screen printing mode; carrying out curing treatment on the thermoplastic elastic material so as to enable the thermoplastic elastic material to be cured to form the elastic filling layer containing the heat-shrinkable particles; wherein the temperature of the thermoplastic elastomer material curing process is lower than the deformation temperature of the heat-shrinkable particles.
Compared with the related art, the array substrate, the display panel and the manufacturing method thereof provided by the embodiment of the invention have the following advantages;
the array substrate comprises a display area, a binding area and a transition area positioned between the display area and the binding area; the transition area is provided with a wiring area and at least one first groove, an elastic filling layer containing heat-shrinkable particles is arranged in the first groove, when the flexible polarizer is prepared on the surface of the array substrate in a coating solution brushing mode, the transition area can be subjected to heat treatment, and the heat-shrinkable particles absorb heat to shrink and deform so as to form a recess on the surface of the elastic filling layer, namely a second groove for containing redundant coating solution is formed on the surface of the elastic filling layer.
Compared with the prior art, the second groove can be formed on the surface of the transition area in the embodiment of the invention, so that the redundant coating solution accumulated in the transition area can flow into the second groove, the redundant coating solution is prevented from flowing into the binding area, and the influence of the redundant coating solution on the subsequent binding process can be eliminated.
In addition to the technical problems solved by the present invention, the technical features constituting the technical solutions, and the advantages brought by the technical features of the technical solutions described above, other technical problems solved by the array substrate, the display panel, and the manufacturing method thereof provided by the present invention, other technical features included in the technical solutions, and advantages brought by the technical features will be further described in detail in the detailed description of the embodiments.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly described below, it is obvious that the drawings in the following description are only a part of the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an array substrate according to an embodiment of the present invention;
fig. 2 is a first schematic distribution diagram of the routing area and the groove in the transition area according to the embodiment of the present invention;
fig. 3 is a second schematic distribution diagram of the routing area and the groove in the transition area according to the embodiment of the present invention;
fig. 4 is a third schematic distribution diagram of the routing area and the groove in the transition area according to the embodiment of the present invention;
FIG. 5 is a schematic view of the arrangement of the support layer and the resilient filling layer disposed in the first groove in an embodiment of the present invention;
FIG. 6 is a first schematic view illustrating a distribution of a plurality of first grooves in a transition region according to an embodiment of the present invention;
FIG. 7 is a second schematic diagram illustrating a distribution of a plurality of first grooves in a transition region according to an embodiment of the present invention;
FIG. 8 is a schematic view of an elastic filling layer formed in the first groove according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a recess formed on a surface of an elastic filling layer according to an embodiment of the present invention;
fig. 10 is a schematic view illustrating a coating solution for forming a flexible polarizer according to an embodiment of the present invention.
Description of reference numerals:
10-a display area; 20-a transition region;
21-a first groove; 22-routing area;
23-a second groove; 30-binding region
40-a flexible polarizer; 100-an array substrate;
211-lateral grooves; 211 a-support layer;
211 b-an elastomeric filling layer; 212-longitudinal grooves;
2111-first region; 2112-second region.
Detailed Description
At present, a display panel generally includes a display panel body and a functional layer, such as a polarizer layer, formed on the display panel body, wherein the display panel body includes an array substrate and a light emitting device layer, the array substrate is divided into a display area and a peripheral non-display area, the light emitting device layer is formed above the display area of the array substrate, and the functional layer is formed above the light emitting device layer.
In the process of manufacturing the existing display panel, a mother board comprising a plurality of display panels is generally prepared, and then the mother board is cut to form a single display panel; wherein the polarizer is also formed in each display panel before cutting. The flexible polarizer is formed by slit coating, and the slit coating is to coat a coating solution for forming the flexible polarizer on each display screen body in the same row at the same time, and should be theoretically coated on a light emitting device layer (display area) in the display screen body, however, because of the problems of insufficient fluidity and coating precision of the coating solution, the redundant coating solution is accumulated outside the display area, and the redundant coating solution accumulated on one side of the binding area generally flows into the binding area, thereby affecting the subsequent binding process.
In order to solve the above problem, in the embodiment of the invention, a transition region is reserved between the display region and the binding region on the array substrate, a first groove and a routing region are arranged in the transition region, and an elastic filling layer containing heat shrinkable particles is arranged in the first groove. By adopting the specific structure, in the process of coating the coating solution for forming the functional layer (similar to a flexible polaroid) on the display screen body, the transition region is subjected to heat treatment, so that the heat-shrinkable particles in the elastic filling layer are subjected to shrinkage deformation after being heated, and then the surface of the elastic filling layer is sunken to form a second groove which can contain redundant coating solution, so that the redundant coating solution accumulated in the transition region is prevented from flowing into the binding region, and the subsequent binding process can be normally carried out.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the described embodiments are merely a few embodiments of the invention, 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 invention.
As shown in fig. 1, a display panel provided in an embodiment of the present invention includes a display screen body and a functional layer that are stacked; the display screen body comprises an array substrate 100 and a light-emitting device layer (a packaging layer is arranged on the light-emitting device layer), wherein the array substrate 100 comprises a substrate which can be a regular rectangular glass substrate, and a driving circuit layer is arranged on the substrate; the driving circuit layer comprises a plurality of driving single paths; the light emitting device layer is an AMOLED layer or a PMOLED layer, and comprises a plurality of light emitting units. One of the driving circuits is electrically connected with one of the light emitting units correspondingly so as to drive the light emitting units to display.
For convenience of describing the structure of the array substrate 100, the present embodiment may define the length direction of the array substrate 100 as the X direction and the width direction as the Y direction.
The array substrate 100 may be divided into a display area 10 and a peripheral non-display area according to the position of the light emitting unit; the non-display region includes a binding region 30, the binding region 30 is located at one side of the display region 10 along a length direction of the array substrate 100, and a transition region 20 is further disposed between the binding region 30 and the display region 10. In the array substrate 100, the driving circuit layer is disposed in the display area, and the light emitting device layer is disposed above the driving circuit layer, that is, formed above the display area 10 in the array substrate 100; a functional layer is disposed on the light emitting device layer (display region 10) and a part of the transition region 20, and the functional layer may be any material layer that can be formed by a coating solution, such as a flexible polarizer; the functional layer in this embodiment may be a flexible polarizer, and the present solution is described by taking the flexible polarizer as an example.
The flexible polarizer is disposed over the display area 10 of the array substrate 100, and particularly, is disposed on a side of the light emitting device away from the array substrate 100. Because the flexible polarizer may be formed by a coating process, the area coated with the coating solution for forming the flexible polarizer covers the display area 10, and the flexible polarizer formed by the cured coating solution may be attached above the display device layer.
The bonding region 30 is used for bonding a chip, the chip is electrically connected to not only the driving circuit, but also the driving circuit in the display region 10, and can transmit a control signal to the light emitting unit, that is, the bonding region 30 and the display region 10 are provided with a wire for transmitting a signal, the wire needs to pass through the transition region 20, one end of the wire extends to the bonding region 30, and the other end of the wire extends to the display region 10.
However, in order to prevent the coating solution for forming the flexible polarizer from entering the bonding region 30 and affecting the subsequent bonding process, in the embodiment of the present invention, the transition region 20 between the display region 10 and the bonding region 30 is provided with not only the routing region 22 but also at least one first groove 21; an elastic filling layer containing heat-shrinkable particles is arranged in the first groove 21, wherein the heat-shrinkable particles can shrink and deform through heat treatment so as to recess the surface of the elastic filling layer and form a second groove.
In the process of forming the flexible polarizer according to the embodiment of the present invention, the coating solution for forming the flexible polarizer may be coated on the surface of the display region in the display screen body, and the coating region of the coating solution covers the display region 10, so that the formed flexible polarizer covers the display region 10. In the coating process, the excess coating solution may accumulate on the surface of the transition region 20, and the second groove may contain the excess coating solution, so as to prevent the coating solution from entering the bonding region 30 and affecting the subsequent bonding process.
The routing area is used for laying wires, and the positions of the wires in the transition area 20 can be set reasonably according to the arrangement condition of the first grooves 21 in the transition area 20. For example, the first groove 21 selectively coincides with the trace area 22; when the first groove 21 is overlapped with the wiring area 22, a supporting layer is required to be arranged in the overlapped area of the first groove and the wiring area for laying the wiring, the supporting layer plays a role in supporting the wiring, and the bending phenomenon of the wiring can be prevented. The support layer may be a blank area of the transition area 20, that is, a surface of the glass substrate is used as a support surface, or a support layer which is separately provided and has a certain flexibility, and can be bent but not deformed. When the first groove 21 and the trace area 22 are not overlapped, an elastic filling layer containing heat-shrinkable particles may be disposed in the area where the first groove 21 and the trace area 22 are not overlapped.
Fig. 2 is a first schematic distribution diagram of the routing area and the first groove in the transition area according to the embodiment of the present invention. As shown in fig. 2, the transition region 20 of the embodiment of the invention is provided with a plurality of first grooves 21, the plurality of first grooves 21 may be arranged in the transition region 20 in an array, that is, the plurality of first grooves 21 may be arranged in the transition region 20 in several rows and several columns, a routing region 22 may be formed in a blank region between two adjacent columns, so that a conductive line passes through the transition region 20, one end of the conductive line extends to the bonding region 30, and the other end of the conductive line extends to the display region 10.
The routing area 22 in this embodiment is formed between any two adjacent rows, which is not limited in this embodiment; alternatively, the trace area 22 may be a blank area located between the edge position of the transition area 20 and a column of the first grooves 21 close to the edge position, that is, along the width direction of the array substrate 100, the trace area 22 may be located between the left side of the first groove 21 in the same column and the left edge of the transition area 20; or between the right side of the first recess 21 and the right side edge of the transition region 20 in the same column.
It is understood that the plurality of first grooves 21 may also be distributed in the transition region 20 in a discrete manner in the present embodiment, that is, the plurality of first grooves 21 may be randomly distributed in the transition region 20. The shape of the first groove 21 is not limited in this embodiment, and the first groove 21 may be an arc groove, a rectangular groove, an oval groove, or the like. This embodiment will be described by taking a rectangular groove or an arc-shaped groove as an example.
Fig. 3 is a second schematic distribution diagram of the routing area and the first groove in the transition area according to the embodiment of the present invention. As shown in fig. 3, in the embodiment of the present invention, a plurality of first grooves 21 are arranged in parallel in the transition region 20, and a length direction of each first groove 21 extends along a direction from the display region to the binding region. That is, in the plurality of first grooves 21 in the transition region 20 arranged in an array, the first grooves 21 in the same column extend and communicate with each other along the column direction (the length direction of the array substrate 100), that is, the first grooves 21 in the same column communicate with each other along the column direction to form the longitudinal grooves 212, a region between two adjacent longitudinal grooves 212 may form the routing region 22, a conductive wire may pass through between two adjacent longitudinal grooves 212, and two ends of the conductive wire extend into the display region 10 and the binding region 30, respectively. It will be appreciated that the wires may also pass through the blank area between the edge of the transition area 20 and the longitudinal groove 212 at the edge location.
Fig. 4 is a third schematic distribution diagram of the trace area and the first groove in the transition area according to the embodiment of the present invention. As shown in fig. 4, in the embodiment of the present invention, the transition region 20 is provided with a plurality of first grooves 21 arranged in parallel, and the length direction of each first groove 21 is parallel to the boundary formed between the transition region and the display region; that is, in the plurality of first grooves 21 in the transition region 20 arranged in an array, the first grooves 21 in the same row extend and communicate with each other along the row direction (the width direction of the array substrate 100), that is, the first grooves 21 in the same row communicate with each other along the row direction to form the transverse groove 211, and the length direction of the transverse groove 211 may extend along the width direction of the array substrate 100; in other words, the length direction of the lateral groove 211 is parallel to the boundary formed between the transition region 20 and the display region 10.
It can be understood that a plurality of first grooves 21 in the same row may form a plurality of transverse grooves 211 arranged at intervals, the extending direction of the first grooves 21 is perpendicular to the arrangement direction of the traces, any one of the first grooves 21 may partially overlap with the trace region, a support layer needs to be arranged in the overlapping region of the first grooves 21 and the trace region 22, and an elastic filling layer containing heat-shrinkable particles may be arranged in the region where the first grooves 21 do not overlap with the trace region 22. In other words, the plurality of transverse grooves 211 are arranged in the same row at intervals, a supporting layer is arranged in an overlapped area of any one of the transverse grooves 211 and the routing area 22, and an elastic filling layer containing heat-shrinkable particles is arranged in an un-overlapped area of the transverse groove 211 and the routing area 22. Alternatively, the empty area between two adjacent transverse grooves 211 in the plurality of transverse grooves 211 in the same row forms the routing area 22, and thus, a supporting layer does not need to be disposed in the transverse grooves 211, and the conductive wires can pass through the empty area of the array substrate 100.
On the basis of the above embodiment, two ends of the lateral groove 211 in this embodiment may extend to the edge position of the transition region 20, and since two ends of the lateral groove 211 may extend to two side edges of the transition region 20, a support layer for a conducting wire to pass through needs to be disposed in the lateral groove 211, each lateral groove 211 includes a first region 2111 and a second region 2112, where the first region 2111 is a region where the lateral groove 211 coincides with the trace region 22; the second area is a region where the transverse groove 211 and the trace region 22 do not overlap, that is, a support layer may be disposed in the first area 2111, and an elastic filling layer containing heat-shrinkable particles is disposed in the second area 2112.
As shown in fig. 5, when two ends of the horizontal groove 211 respectively extend to two left and right edge positions of the array substrate 100, a supporting layer 211a may be disposed in an overlapping area of the first groove 211 and the trace area 22, that is, the supporting layer 211a is disposed in the first area 2111 of the horizontal groove 211; accordingly, two adjacent lateral grooves 211 are provided at positions corresponding to the support layers 211a, so that the conductive wires pass through the surface of each support layer 211 a.
In addition, in the present embodiment, an elastic filling layer 211b containing heat-shrinkable particles is further disposed in the non-overlapping area of the first groove 211 and the trace area 22, that is, the elastic filling layer 211b containing heat-shrinkable particles is disposed in the second area 2112 of the lateral groove 211, and the second groove can be formed on the surface of the elastic filling layer 211b containing heat-shrinkable particles under the hot pressing condition, so that the coating solution accumulated in the transition area 20 can flow into the second groove, and the coating solution is prevented from entering the bonding area 30.
It is understood that the position of the support layer 211a in the lateral groove 211 provided in the present embodiment is not limited, the support layer 211a may be located at an edge position or a middle position of the lateral groove 211, and the support layer 211a and the elastic filling layer 211b may be spaced apart in the lateral groove 211. In this embodiment, the supporting layer 211a is preferably disposed at the middle part, and the elastic filling layers 211b are disposed on the left and right sides of the supporting layer 211 a; both ends of the conductive line can be made to face the display area 10, facilitating the connection of the conductive line to the display device in the display area 10.
On the basis of the above-mentioned embodiment, the transition region 20 may be provided with a plurality of parallel transverse grooves 211 along the direction from the display region 10 to the binding region 30, and the present embodiment does not impose any limitation on the number of transverse grooves 211 provided in the transition region 20 and the interval between two adjacent transverse grooves 211, and is not limited to the two transverse grooves 211 provided in the transition region 20 shown in fig. 4 and 5. For example, more than two lateral grooves 211 may be provided in the transition region 20, and the number of the lateral grooves 211 and the amount of coating solution that can be accommodated in each lateral groove 211 may be set according to the excess coating solution to be collected.
As shown in fig. 6, each of the lateral grooves 211 has a width and a depth, and for convenience of describing the present embodiment, a thickness direction of the array substrate 100 may be defined as a Z direction. The depth direction of the lateral groove 211 is consistent with the thickness direction of the array substrate 100; meanwhile, it is defined that the arrangement direction of the plurality of lateral grooves 211 in the transition region 20 coincides with the length direction of the array substrate 100, that is, the plurality of lateral grooves 211 are arranged along the X direction.
In the embodiment of the present invention, a plurality of transverse grooves 211 are formed in the transition region 20, the transverse grooves 211 are parallel to each other, and the interval between two adjacent transverse grooves 211 may be equal, so as to form a plurality of transverse grooves 211 on the surface of the transition region 20. Illustratively, in the present embodiment, five lateral grooves 211 are uniformly formed on the surface of the array substrate 100, and the cross-sectional shape of the lateral grooves 211 may be rectangular or arc; taking the transverse groove 211 as an arc-shaped groove as an example, the depth and the opening width of the transverse groove 211 can be set according to the sizes of different screen bodies; the opening width of the lateral groove 211 may be set between 5 μm and 20 μm, and the depth of the lateral groove 211 may be 1/10 to 1/5 of the thickness of the array substrate 100. For the same lateral groove 211, the depth and the opening width of different regions of the lateral groove 211 may be the same or different, and the opening width and the depth of each lateral groove 211 may be the same or different; this is not particularly required by the present embodiment.
As shown in fig. 7, in the present embodiment, a plurality of transverse grooves 211 are provided in the transition region 20, the plurality of transverse grooves 211 are parallel to each other, and the intervals between two adjacent transverse grooves 211 are not equal. Illustratively, in the direction from the display region 10 to the binding region 30, the transition region 20 is sequentially provided with five lateral grooves 211, and the interval between two adjacent lateral grooves 211 gradually becomes smaller; that is, the arrangement density of the lateral grooves 211 at the side of the transition region 20 close to the bonding region 30 is greater than the arrangement density at the side of the transition region 20 close to the display region 10; so that the arrangement density of the lateral groove 211 matches the deposition amount of the surplus arrangement solution, and the surplus coating solution can be prevented from flowing into the binding region 30.
As shown in fig. 8, and in conjunction with fig. 4 and 5, a support layer 211a and an elastic filling layer 211b are disposed in the lateral groove 211, and the surfaces of the support layer 211a and the elastic filling layer 211b are flush with the surface of the array substrate 100; the support layer 211a is located in a first region 2111 of the lateral recess 211 and the resilient fill layer 211b is located in a second region 2112 of the lateral recess 211.
The first region 2111 is opposite to the above-described conductive line connecting the binding region 30 and the display region 10, and the conductive line may pass through the first region 2111 in a direction perpendicular to the length direction of the lateral groove 211. The first region 2111 forms a filling layer that does not contain heat-shrinkable particles, i.e., the support layer 211a formed in the first region 211 does not contain heat-shrinkable particles; the conductive lines may be disposed on the surface of the support layer 211 a. Because the supporting layer 211a is not doped with the heat-shrinkable particles, the supporting layer 211a is not deformed when the supporting layer 211a is heated and cured; therefore, the lead can be prevented from being broken due to bending, and the yield of products is improved.
Correspondingly, the elastic filling layer 211b in the second region 2112 is doped with heat-shrinkable particles, and the heat-shrinkable particles shrink and deform during the heating and curing process of the elastic filling layer 211b, so that the volume occupied by the heat-shrinkable particles in the elastic filling layer 211b is reduced, the surface of the elastic filling layer 211b can be recessed to form a second groove 23, so as to form an excess coating solution flowing into the transition region 20, and prevent the coating solution accumulated in the transition region 20 from flowing into the binding region 30 to affect the subsequent binding process; as shown in fig. 9.
In this embodiment, the supporting layer 211a and the elastic filling layer 211b may be made of thermoplastic elastic material, and the thermoplastic elastic material may be cured at high temperature to form an elastomer; the support layer 211a is different from the elastic filling layer 211b in that the elastic filling layer 211b is doped with heat-shrinkable particles; the heat shrinkable particles may be made of polyethylene or polyvinyl chloride having a memory function, and may be shrunk and deformed after absorbing heat, so as to recess the surface of the elastic filling layer 211b to form the second groove 23. Further, the supporting layer 211a may also be made of a hard material, and may be formed in the lateral groove 211 with the elastic filling layer 211b, respectively; or the support layer 211a is formed of a blank area of a part of the glass substrate.
As shown in fig. 10, when the flexible polarizer 40 is formed on the surface of the display panel by coating, the excess coating solution accumulated on the transition region 20 will flow into the second groove 23 formed on the surface of the elastic filling layer 211b, so as to prevent the excess coating solution from flowing into the bonding region 30 and affecting the subsequent bonding process; meanwhile, the surface of the coating solution coated on the display region 10 may be flat, so that the thickness of the flexible polarizer 40 may be uniform, and the surface of the flexible polarizer 40 away from the array substrate 100 may be flat, thereby improving the display effect of the display panel.
The embodiment of the invention also provides a manufacturing method of the display panel, which specifically comprises the following steps:
step a: an array substrate 100 is provided, the array substrate 100 includes a display region 10 and a bonding region 30 located at one end of the display region 10, and a transition region 20 is disposed between the bonding region 30 and the display region 10. A wiring area and at least one first groove are arranged in the transition area; an elastic filling layer containing heat-shrinkable particles is arranged in the first groove; the array substrate 100 provided by the present invention has the structure of the array substrate 100 (the array substrate in the display panel), and the specific content refers to the foregoing description.
For example, the first groove 21 located in the transition region 20 may be formed by wet etching or laser etching, and the first groove 21 may be formed directly on the glass substrate, in which case the glass substrate may be directly processed by using a glass etching solution or by using laser etching to form a plurality of first grooves 21 in the transition region 20.
To facilitate the description of the method, the first grooves 21 in the same row are connected to form the transverse groove 211 in this embodiment as an example: both ends of the lateral groove 211 can extend to the edge position of the transition region 20, and the lateral groove 211 comprises a first region 2111 and a second region 2112, wherein the first region 2111 coincides with the trace region 22; and the first region 2111 is provided with a support layer 211a to dispose the conductive lines on the support layer 211 a. The second region 2112 is not overlapped with the trace region 22, and the second region 2112 is provided with an elastic filling layer 211b containing heat-shrinkable particles.
For example, in the process of forming the support layer and the elastic filling layer containing the heat-shrinkable particles, a thermoplastic elastic material may be filled in an area where the support layer 211a is to be formed, and then the thermoplastic elastic material may be cured to cure the thermoplastic elastic material filled in the first area 2111 to form the support layer 211 a. Then, the second region 2112 is filled with the thermoplastic elastomer material containing the heat-shrinkable particles by screen printing, and then the thermoplastic elastomer material containing the heat-shrinkable particles is subjected to curing treatment to form the elastic filling layer 211 b.
The conditions of the curing treatment are directly related to the selection of the thermoplastic elastomer material, and are not specifically limited herein, as long as the conditions of the curing treatment on the thermoplastic elastomer material do not cause the deformation of the heat-shrinkable particles, and the specific temperature of the curing treatment is lower than the deformation temperature of the heat-shrinkable particles.
Step b: forming a light emitting device layer having an AMOLED structure or a PMOLED structure on a surface of the array substrate. The light emitting device layer is formed above the display area in the array substrate; and forming an encapsulation layer on the light emitting device layer to protect the light emitting device layer, wherein the encapsulation layer covers the light emitting device layer, and the boundary of the encapsulation layer is positioned between the boundary of the display area and the transition area in the array substrate and the first groove.
Step c: coating a coating solution for forming a flexible polarizer 40 on the upper side of the light-emitting device layer (on the upper side of the display screen body), and simultaneously performing heat treatment on the transition region to form a second groove 23 on the surface of the elastic filling layer, wherein the second groove 23 contains redundant coating solution; so that the flexible polarizer 40 covers the entire display region 10 and does not flow into the binding region to affect the subsequent binding process.
For example, during the coating solution application process, the transition region 20 may be subjected to a heat treatment (e.g., infrared heating), and the heat-shrinkable particles in the elastic filling layer 211b shrink and deform, so that the surface of the elastic filling layer 211b is recessed and forms a second groove 23, and the second groove 23 is used for containing an excess coating solution, which may prevent the excess coating solution from flowing into the binding region 30. After the coating solution is cured, the flexible polarizer 40 with uniform thickness can be formed.
Specifically, during application of the coating solution, the transition region 20 is subjected to a heat treatment (e.g., infrared heating) to cure the thermoplastic elastomer material containing the heat-shrinkable particles filled in the second region 2112. The flexible polarizer 40 provided in this embodiment is a multilayer structure, and is required to be coated with the coating solution for multiple times, without preventing the coating solution remaining after each coating from accumulating in the transition region 20, the coating and the heating of the transition region 20 may be performed simultaneously, so that the coating solution remaining after each coating can flow into the second groove 23 formed on the surface of the elastic filling layer 211b, and the excessive coating solution accumulated in the binding region 30 is prevented from flowing into the binding region, thereby affecting the subsequent binding process.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (18)
1. The array substrate is characterized by being divided into a display area, a binding area and a transition area between the display area and the binding area; the transition area is provided with a wiring area and at least one first groove, an elastic filling layer containing heat-shrinkable particles is arranged in the first groove, a second groove is formed on the surface of the elastic filling layer, and the functional layer is filled in the second groove.
2. The array substrate of claim 1, wherein the transition region is provided with a plurality of the first grooves, and the plurality of the first grooves are arranged in the transition region in an array.
3. The array substrate of claim 2, wherein the trace area is disposed in an area between two adjacent columns of the first grooves.
4. The array substrate of claim 1, wherein the transition region is provided with a plurality of first grooves arranged in parallel, and a length direction of each first groove extends along a direction from the display region to the binding region.
5. The array substrate of claim 4, wherein the trace area is disposed in an area between two adjacent first grooves.
6. The array substrate according to claim 1, wherein the first groove partially coincides with the trace area, a support layer is disposed in a coinciding area of the first groove and the trace area, and the elastic filling layer containing the heat-shrinkable particles is disposed in a non-coinciding area of the first groove and the trace area.
7. The array substrate of claim 6, wherein the transition region is provided with a plurality of first grooves arranged in parallel, and a length direction of each first groove is parallel to a boundary formed between the transition region and the display region; at least one supporting layer and at least one elastic filling layer containing heat-shrinkable particles are arranged in each first groove at intervals.
8. The array substrate of claim 6, wherein a spacing distance between two adjacent first grooves gradually decreases along a direction from the display area to the binding area.
9. The array substrate of claim 1, wherein the elastic filling layer comprises a base material and heat-shrinkable particles distributed in the base material, wherein the base material is a thermoplastic elastomer, and the heat-shrinkable particles are polyethylene or polyvinyl chloride.
10. The display panel is characterized by comprising an array substrate, a light-emitting device layer and a functional layer which are arranged in a stacked mode;
the array substrate is divided into a display area, a binding area and a transition area between the display area and the binding area; the transition area is provided with a wiring area and at least one first groove, an elastic filling layer containing heat-shrinkable particles is arranged in the first groove, and a second groove is formed on the surface of the elastic filling layer;
the light emitting device layer is positioned above the display area of the array substrate;
the functional layer is located above the light-emitting device layer and extends to the transition region of the array substrate, and the functional layer is filled in the second groove.
11. The display panel according to claim 10,
the transition area is provided with a plurality of first grooves, and the first grooves are arranged in the transition area in an array mode.
12. The display panel according to claim 11, wherein the routing area is disposed in an area between two adjacent columns of the first grooves; or alternatively
The transition region is provided with a plurality of first grooves which are arranged in parallel, and the length direction of each first groove extends along the direction from the display region to the binding region.
13. The display panel according to claim 11, wherein the routing areas are arranged in an area between two adjacent first grooves; or
The first groove is partially overlapped with the wiring area, a supporting layer is arranged in the overlapped area of the first groove and the wiring area, and the elastic filling layer containing the heat-shrinkable particles is arranged in the non-overlapped area of the first groove and the wiring area.
14. The display panel according to claim 13, wherein the transition region is provided with a plurality of the first grooves arranged in parallel, and a length direction of each of the first grooves is parallel to a boundary formed between the transition region and the display region; at least one supporting layer and at least one elastic filling layer containing heat-shrinkable particles are arranged in each first groove at intervals.
15. The display panel according to claim 11, wherein a separation distance between two adjacent first grooves gradually decreases in a direction from the display region to the binding region.
16. The display panel of claim 10, wherein the functional layer is a flexible polarizer.
17. A manufacturing method of a display panel is characterized by comprising the following steps:
providing an array substrate, wherein the array substrate comprises a display area, a binding area and a transition area positioned between the display area and the binding area; a wiring area and at least one first groove are arranged in the transition area; an elastic filling layer containing heat-shrinkable particles is arranged in the first groove;
forming a light emitting device layer on a surface of the array substrate;
and coating a coating solution for forming a functional layer above the light-emitting device layer, and simultaneously carrying out heat treatment on the transition region to form a second groove on the surface of the elastic filling layer, wherein the second groove is used for accommodating redundant coating solution.
18. The method for manufacturing a display panel according to claim 17, wherein the method for preparing the elastic filling layer containing the heat-shrinkable particles comprises:
filling thermoplastic elastic materials containing heat-shrinkable particles in the first groove by adopting a screen printing mode; carrying out curing treatment on the thermoplastic elastic material so as to enable the thermoplastic elastic material to be cured to form the elastic filling layer containing the heat-shrinkable particles;
wherein the temperature of the thermoplastic elastomer material curing process is lower than the deformation temperature of the heat-shrinkable particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010899160.XA CN111816692B (en) | 2020-08-31 | 2020-08-31 | Array substrate, display panel and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010899160.XA CN111816692B (en) | 2020-08-31 | 2020-08-31 | Array substrate, display panel and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111816692A CN111816692A (en) | 2020-10-23 |
| CN111816692B true CN111816692B (en) | 2022-09-20 |
Family
ID=72859278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010899160.XA Active CN111816692B (en) | 2020-08-31 | 2020-08-31 | Array substrate, display panel and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111816692B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107065338A (en) * | 2017-06-08 | 2017-08-18 | 厦门天马微电子有限公司 | Array base palte, motherboard, liquid crystal display panel and display device |
| CN111508972A (en) * | 2020-04-21 | 2020-08-07 | 武汉华星光电半导体显示技术有限公司 | Flexible array substrate, flexible display panel and preparation method thereof |
-
2020
- 2020-08-31 CN CN202010899160.XA patent/CN111816692B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107065338A (en) * | 2017-06-08 | 2017-08-18 | 厦门天马微电子有限公司 | Array base palte, motherboard, liquid crystal display panel and display device |
| CN111508972A (en) * | 2020-04-21 | 2020-08-07 | 武汉华星光电半导体显示技术有限公司 | Flexible array substrate, flexible display panel and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111816692A (en) | 2020-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100359369C (en) | Display device | |
| US20030052419A1 (en) | Semiconductor device and method of manufacturing the same | |
| KR19990044229A (en) | Method for manufacturing spatial chip arranging device and device therefor | |
| EP1244055A2 (en) | Portable electronic medium and manufacturing method thereof | |
| EP3250013B1 (en) | Three-dimensional circuit structure body | |
| EP3131114B1 (en) | Bare die integration within a flexible substrate | |
| TWI511177B (en) | Inkjet printed wirebonds, encapsulant and shielding | |
| KR102189438B1 (en) | Printed wiring | |
| TWI604767B (en) | Microelectronics device including anisotropic conductive layer and method of forming the same | |
| KR20140131813A (en) | Chip on film package including the distributed via plugs | |
| CN111816692B (en) | Array substrate, display panel and manufacturing method thereof | |
| CN108734075A (en) | Taken module and its manufacturing method | |
| CN102549739B (en) | IC package with non-uniform dielectric layer thickness | |
| CN104051405A (en) | Circuit board structure provided with electronic assemblies in embedded manner and manufacturing method thereof | |
| CN111610879B (en) | Touch panel, preparation method of touch panel, touch assembly and electronic equipment | |
| TWI400548B (en) | Electrophoretic display apparatus and its manufacturing method | |
| CN107211548A (en) | The forming method of laminated circuit basal board and the laminated circuit basal board being consequently formed | |
| JP7145295B2 (en) | ELECTRONIC DEVICE AND ELECTRONIC DEVICE MANUFACTURING METHOD | |
| CN113838378B (en) | Display module and display device | |
| CN209893141U (en) | LED panel light | |
| CN113473696A (en) | Display module and display device | |
| CN114003144B (en) | Touch structure, touch display device and manufacturing method | |
| JPH0631137U (en) | Multiple electronic components | |
| JP2021536670A (en) | Electronic devices and manufacturing methods for electronic devices | |
| US20230209709A1 (en) | Display panel and manufacturing method thereof |
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 | ||
| GR01 | Patent grant |