CN108281570B - Display panel and manufacturing method thereof - Google Patents
Display panel and manufacturing method thereof Download PDFInfo
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- CN108281570B CN108281570B CN201810164565.1A CN201810164565A CN108281570B CN 108281570 B CN108281570 B CN 108281570B CN 201810164565 A CN201810164565 A CN 201810164565A CN 108281570 B CN108281570 B CN 108281570B
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/844—Encapsulations
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- 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
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
Abstract
The invention discloses a display panel and a manufacturing method thereof, wherein the display panel comprises a substrate base plate, the substrate base plate comprises a display area and a peripheral area surrounding the display area, and the display panel also comprises at least one protective layer at least covering a cutting area corresponding to a cutting line of the peripheral area. Because the protective layer is arranged at the edge of the peripheral area of the display panel, when the display panel is cut by using a laser technology subsequently, the protective layer can absorb laser energy and release impact force, and prevent the edge film layer from being heated and impacted to generate cracks to be diffused to the display area, thereby solving the problem that the film layer in the cutting area is easy to generate cracks due to overlarge laser intensity in the prior art, and the cracks are conducted inwards to enter the display area to influence the display.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a manufacturing method thereof.
Background
In the Display field, an Organic Light Emitting Diode (OLED) Display panel is considered as a new application technology of a next generation flat panel Display because it has excellent characteristics of self-luminescence, no need of a backlight source, high contrast, thin thickness, wide viewing angle, fast response speed, applicability to a flexible panel, wide application temperature range, and the like. Currently, flexible OLED display devices are becoming an important development direction of display devices.
In the prior art, the manufacturing process of the flexible display panel is as follows: a plurality of flexible display panels are formed on a large display mother board and then cut to form independent flexible display panels. At present, flexible OLED is cut by laser, because laser energy is large, a film layer near a cutting line is easily modified by heating and impact, the strength is reduced, cracks are easily generated by external impact in subsequent procedures, the cracks are conducted inwards to enter a display area to cause black clusters, and a method capable of effectively protecting the cutting edge and preventing the cracks is urgently needed.
Disclosure of Invention
The embodiment of the invention provides a display panel, a manufacturing method thereof and the display panel, which are used for solving the problem that when the laser technology is adopted for cutting in the prior art, a film layer in a cutting area is impacted by laser energy to generate cracks, and the cracks are conducted inwards to enter a display area to influence the display.
Therefore, an embodiment of the present invention provides a display panel, including a substrate, where the substrate includes a display area and a peripheral area surrounding the display area, and the display panel further includes at least one protective layer covering at least a cutting area corresponding to a cutting line at an edge of the peripheral area.
Preferably, in the display panel provided in the embodiment of the present invention, a material of the protective layer is an organic material.
Preferably, in the display panel provided in the embodiment of the present invention, the display panel further includes a planarization layer, a pixel defining layer, and a spacer layer; one or a combination of the planarization layer, the pixel definition layer and the spacer layer is multiplexed as a protective layer.
Preferably, in the display panel provided in the embodiment of the present invention, the display panel further includes a barrier layer completely covering the substrate, and at least one film layer located on the barrier layer and covering the display area and the peripheral area; the orthographic projection of the film layer on the substrate base plate and the orthographic projection of the protective layer on the substrate base plate have no overlapping area.
Preferably, in the display panel provided in the embodiment of the present invention, a partial region of the film layer close to the protective layer includes a plurality of independently disposed first trenches.
Preferably, in the display panel provided in the embodiment of the present invention, the display panel further includes a barrier layer completely covering the substrate, and at least one film layer located on the barrier layer and covering the display area and the peripheral area; an overlapping area exists between the orthographic projection of the film layer on the substrate base plate and the orthographic projection of the protective layer on the substrate base plate.
Preferably, in the display panel provided in the embodiment of the present invention, a portion of the film layer overlapped with the protection layer includes a plurality of independently disposed first trenches, and the protection layer fills the first trenches.
Preferably, in the display panel provided in the embodiment of the present invention, the protective layer includes a plurality of independently disposed second trenches, and an orthogonal projection of each second trench on the substrate does not have an overlapping region with an orthogonal projection of the film layer on the substrate.
Preferably, in the display panel provided in the embodiment of the present invention, when the film layer includes the first groove, the first groove penetrates through the film layer; the second trench penetrates the protection layer.
Correspondingly, the embodiment of the invention also provides a preparation method of the display panel, which comprises the following steps:
forming a plurality of display panels arranged in an array on a display mother board; wherein the display panel includes a display area and a peripheral area surrounding the display area;
forming at least one protective layer on the display mother board, wherein the protective layer at least covers a cutting area corresponding to the cutting line at the edge of the peripheral area;
and cutting along the cutting line to form independent display panels.
The invention has the beneficial effects that:
the display panel comprises a substrate base plate, wherein the substrate base plate comprises a display area and a peripheral area surrounding the display area, and the display panel further comprises at least one protective layer at least covering a cutting area corresponding to a cutting line of the peripheral area. Because the protective layer is arranged at the edge of the peripheral area of the display panel, when the display panel is cut by using a laser technology subsequently, the protective layer can absorb laser energy and release impact force, and prevent the edge film layer from being heated and impacted to generate cracks to be diffused to the display area, thereby solving the problem that the film layer in the cutting area is easy to generate cracks due to overlarge laser intensity in the prior art, and the cracks are conducted inwards to enter the display area to influence the display.
Drawings
FIG. 1 is a schematic structural diagram of a conventional display panel;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 3 is a second schematic structural diagram of a display panel according to an embodiment of the invention;
fig. 4 is a third schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 5 is a fourth schematic view illustrating a display panel according to an embodiment of the present invention;
FIG. 6 is a fifth schematic view illustrating a structure of a display panel according to an embodiment of the present invention;
fig. 7 is a flowchart of a method for manufacturing a display panel according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following describes in detail a display panel, a manufacturing method thereof, an organic light emitting display panel and a specific implementation of the display panel provided in an embodiment of the present invention with reference to the accompanying drawings.
The thicknesses and shapes of the respective layers in the drawings do not reflect the true proportions of the display panel, and are merely intended to schematically illustrate the present invention.
In the prior art, as shown in fig. 1, a flexible OLED display panel includes a substrate base plate 01, the substrate base plate 01 includes a display area and a peripheral area AA, only a peripheral area AA is illustrated in fig. 1, the substrate 01 of the peripheral area AA includes a barrier layer 02 completely covering the substrate 01, a buffer layer 03 over the barrier layer 02, a gate insulating layer 04 over the buffer layer 03, an interlayer dielectric layer 05 over the gate insulating layer 04, and an encapsulation layer 06 over the interlayer dielectric layer 05, since the cutting line a is located at the edge of the peripheral area AA, the prior art uses a laser technique to cut a single display panel, due to the large laser energy, the film layer near the cutting line a, such as the barrier layer 02, is easily heated and easily cracked by impact (in the direction of the arrow in the figure), and the cracks are conducted inwards into the display area, so that black lumps affect the display effect of the display panel.
In view of the above, the present invention provides a display panel, as shown in fig. 2 to 6, including a substrate base plate 01, the substrate base plate 01 includes a display area and a peripheral area AA surrounding the display area, only the peripheral area AA is shown in the figure, and the display panel further includes at least one protective layer 07 covering at least a cutting area bb corresponding to a cutting line a at an edge of the peripheral area AA.
According to the display panel provided by the embodiment of the invention, the protective layer is arranged at the edge of the peripheral area, so that when the display panel is cut by using a laser technology subsequently, the protective layer can absorb laser energy and release impact force, and prevent the edge film layer from being heated and impacted to generate cracks to be diffused to the display area, thereby solving the problem that the film layer in the cutting area is easy to generate cracks due to overlarge laser intensity in the prior art, and the cracks are conducted inwards to enter the display area to influence the display.
Further, in order to effectively absorb laser energy and release an impact force, in the display panel provided in the embodiment of the present invention, a material of the protective layer is an organic material.
Further, in the display panel provided in the embodiment of the present invention, the display panel further includes a planarization layer, a pixel defining layer, and a spacer layer; one or a combination of the planarization layer, the pixel defining layer and the spacer layer is multiplexed as a protective layer. That is, when the planarization layer, the pixel definition layer or the spacer layer is formed, the planarization layer, the pixel definition layer or the spacer layer above the cutting region corresponding to the cutting line is not required to be etched by a photolithography process, but is reserved to be reused as a protection layer, so that a process for separately preparing the protection layer is not required to be added, the preparation process flow can be simplified, the production cost is saved, and the production efficiency is improved. For example, the protection layer of the embodiment of the invention may be a pattern of multiplexing planarization layer alone, a pattern of multiplexing pixel definition layer alone, a pattern of multiplexing spacer layer alone, or may be one or a combination of a pattern of multiplexing planarization layer, pixel definition layer and spacer layer. The invention is characterized in that the film layers are reused as a protective layer to absorb laser energy and release impact force, and prevent the edge film layer from being heated and impacted to generate cracks to be diffused to a display area, thereby solving the problem that the film layer in the cutting area is easy to generate cracks due to overlarge laser intensity in the prior art, and the cracks are conducted inwards to enter the display area to influence the display.
Further, in the display panel provided in the embodiment of the present invention, as shown in fig. 2, the display panel further includes a barrier layer 02 completely covering the substrate 01, and the barrier layer 02 is for improving surface adhesion, blocking water and oxygen, and simultaneously playing a role in heat insulation and static electricity prevention; the display panel further comprises at least one film layer 10 overlying the barrier layer 02 covering the display area and the peripheral area AA; the orthographic projection of the film layer 10 on the substrate base plate 01 and the orthographic projection of the protective layer 07 on the substrate base plate 01 have no overlapping area. However, since the barrier layer 02 is generally an inorganic layer and is very thin, when the laser technology is used for cutting, cracks are easily generated on the barrier layer 02, and just for preventing the generation of the cracks, the protective layer 07 provided by the invention can absorb laser energy and release impact force, and prevent the cracks generated by heating and impacting the barrier layer 02 from diffusing to the display area, thereby solving the problem that the cracks are easily generated on the barrier layer 02 in the cutting area due to overlarge laser intensity in the prior art, and the cracks are conducted inwards to enter the display area to influence the display.
Further, in order to prevent crack propagation, in the display panel provided by the embodiment of the present invention, as shown in fig. 2, a partial region of the film layer 10 near the protective layer 07 includes a plurality of independently disposed first trenches 001. Thus, when the barrier layer 02 cracks, the first trenches 001 may block crack propagation.
Further, in the display panel provided in the embodiment of the present invention, as shown in fig. 3 to 6, the display panel further includes a barrier layer 02 completely covering the substrate base plate 01, and the barrier layer 02 is for improving a surface adhesion force, blocking water and oxygen, and simultaneously playing a role in heat insulation and static electricity prevention; the display panel further comprises at least one film layer 10 overlying the barrier layer 02 covering the display area and the peripheral area AA; the orthographic projection of the film layer 10 on the substrate base plate 01 and the orthographic projection of the protective layer 07 on the substrate base plate 01 have an overlapping area. Because the orthographic projection of the protective layer 07 on the substrate base plate 01 is overlapped with the orthographic projection of the film layer 10 on the substrate base plate 01, the protective layer 07 covers a larger area, but the protective layer 07 only covers the cutting area bb corresponding to the cutting line a of the peripheral area AA, so that the protective layer 07 has better effects of absorbing the energy of the laser and releasing the impact force of the laser.
Further, in order to prevent crack propagation, in the above-described display panel provided by the embodiment of the present invention, as shown in fig. 3 to 6, a portion of the film layer 10 overlapping with the protective layer 07 includes a plurality of independently disposed first trenches 001, and the protective layer 07 fills the first trenches 001. Thus, when the barrier layer 02 cracks, the first trenches 001 may block crack propagation.
Further, in the display panel provided in the embodiment of the present invention, as shown in fig. 2 to fig. 6, the film 10 includes one or a combination of a buffer layer 03, a gate insulating layer 04, and an interlayer dielectric layer 05. The arrangement of these layers 10 is the same as in the prior art and will not be described in detail here.
Further, since the organic material in the display device is liable to react with water and oxygen, so that the organic material fails, and the service life of the device is shortened, in the display panel provided in the embodiment of the present invention, as shown in fig. 2 to 6, the display panel further includes an encapsulation layer 06 located above the film layer 10, and an orthographic projection of the encapsulation layer 06 on the substrate base 01 and an orthographic projection of the protection layer 07 on the substrate base 01 have no overlapping region.
Further, in the display panel provided by the embodiment of the present invention, as shown in fig. 2, fig. 3, fig. 5 and fig. 6, the protective layer 07 includes a plurality of independently disposed second grooves 002, and an orthographic projection of each second groove 002 on the substrate 01 has no overlapping region with an orthographic projection of the film layer 10 on the substrate 01. Because the second groove 002 structure is arranged in the protective layer 07, the second groove 002 can effectively absorb the energy of laser, even if cracks are generated, the second groove 002 structure can block the continuous diffusion of the cracks, and therefore the problem that in the prior art, due to the fact that the laser intensity is too large, cracks are easily generated on the barrier layer 02 of the cutting area, and the cracks are conducted inwards to enter the display area to influence the display is solved.
Preferably, in the display panel provided in the embodiment of the invention, as shown in fig. 2, fig. 4, fig. 5 and fig. 6, when the film 10 includes the first trench 001, the first trench 001 penetrates through the film 10; the second trench 002 penetrates the protection layer 07, so that the film layer 10 and the protection layer 07 have better effects of absorbing the energy of the laser and releasing the impact force of the laser.
Fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the invention.
As shown in fig. 2, in the flexible display panel in the present embodiment, individual display panels are formed by cutting along cutting lines a.
The display panel includes: the packaging structure comprises a substrate base plate 01, a barrier layer 02 completely covering the substrate base plate 01, and a film layer 10 positioned on the barrier layer 02, wherein the film layer 10 comprises a buffer layer 03, a gate insulating layer 04 positioned on the buffer layer 03, an interlayer dielectric layer 05 positioned on the gate insulating layer 04, and a packaging layer 06 positioned above the interlayer dielectric layer 05; the partial region of the film 10 close to the protective layer 07 includes a plurality of independently disposed first trenches 001, and no overlapping region exists between the orthographic projection of the buffer layer 03, the gate insulating layer 04, the interlayer dielectric layer 05 and the encapsulation layer 06 on the substrate 01 and the orthographic projection of the protective layer 07 on the substrate 01.
Fig. 3 is a schematic structural diagram of a display panel according to another embodiment of the invention.
As shown in fig. 3, the present embodiment is different from the embodiment shown in fig. 2 only in the structure of the protective layer 07. The display panel includes: the packaging structure comprises a substrate base plate 01, a barrier layer 02 completely covering the substrate base plate 01, and a film layer 10 positioned on the barrier layer 02, wherein the film layer 10 comprises a buffer layer 03, a gate insulating layer 04 positioned on the buffer layer 03, an interlayer dielectric layer 05 positioned on the gate insulating layer 04, and a packaging layer 06 positioned above the interlayer dielectric layer 05; the portion of the film layer 10 overlapping the protective layer 07 includes a plurality of independently disposed first trenches 001, and the protective layer 07 fills the first trenches 001. These layers are the same as the previous embodiment and are not described herein.
The protective layer 07 shown in fig. 3 is a whole-surface structure, and the orthographic projection of the gate insulating layer 04, the interlayer dielectric layer 05 and the encapsulation layer 06 on the substrate base 01 and the orthographic projection of the protective layer 07 on the substrate base 01 have an overlapping region. In the embodiment, the protective layer 07 is arranged at the edge of the peripheral area of the display panel, and when the display panel is subsequently cut by using a laser technology, the protective layer 07 can absorb laser energy and release impact force, and prevent the barrier layer 02 from being heated and impacted to generate cracks to be diffused to the display area, so that the problem that in the prior art, the film layer in the cutting area is easy to generate cracks due to overlarge laser intensity, and the cracks are conducted inwards to enter the display area to influence display is solved.
Fig. 4 is a schematic structural diagram of a display panel according to another embodiment of the invention.
As shown in fig. 4, the present embodiment is different from the embodiment shown in fig. 3 only in the structure of the protective layer 07. The display panel includes: the packaging structure comprises a substrate base plate 01, a barrier layer 02 completely covering the substrate base plate 01, and a film layer 10 positioned on the barrier layer 02, wherein the film layer 10 comprises a buffer layer 03, a gate insulating layer 04 positioned on the buffer layer 03, an interlayer dielectric layer 05 positioned on the gate insulating layer 04, and a packaging layer 06 positioned above the interlayer dielectric layer 05; the portion of the film layer 10 overlapping the protective layer 07 includes a plurality of independently disposed first trenches 001, and the protective layer 07 fills the first trenches 001. These layers are the same as the previous embodiment and are not described herein.
In the display panel shown in fig. 4, overlapping regions are formed in the orthographic projections of the gate insulating layer 04, the interlayer dielectric layer 05 and the encapsulation layer 06 on the substrate base plate 01 and the orthographic projection of the protective layer 07 on the substrate base plate 01, a plurality of second grooves 002 which are independently arranged and penetrate through the protective layer 07 are arranged in the protective layer 07, and no overlapping region exists between the orthographic projection of each second groove 002 on the substrate base plate 01 and the orthographic projection of the film layer 10 on the substrate base plate 01. Because the second groove 002 structure is arranged in the protective layer 07, the second groove 002 can effectively absorb the energy of laser, even if cracks are generated, the second groove 002 structure can block the continuous diffusion of the cracks, and therefore the problem that in the prior art, due to the fact that the laser intensity is too large, cracks are easily generated on the barrier layer 02 of the cutting area, and the cracks are conducted inwards to enter the display area to influence the display is solved.
Fig. 5 is a schematic structural diagram of a display panel according to another embodiment of the invention.
As shown in fig. 5, the present embodiment is different from the embodiment shown in fig. 4 only in the structure of the protective layer 07. The display panel includes: the packaging structure comprises a substrate base plate 01, a barrier layer 02 completely covering the substrate base plate 01, and a film layer 10 positioned on the barrier layer 02, wherein the film layer 10 comprises a buffer layer 03, a gate insulating layer 04 positioned on the buffer layer 03, an interlayer dielectric layer 05 positioned on the gate insulating layer 04, and a packaging layer 06 positioned above the interlayer dielectric layer 05; the portion of the film layer 10 overlapping the protective layer 07 includes a plurality of independently disposed first trenches 001, and the protective layer 07 fills the first trenches 001. These layers are the same as the previous embodiment and are not described herein.
In the display panel shown in fig. 5, the protection layer 07 includes two organic layer structures 071 and 072, which can reuse a planarization layer, a pixel defining layer, or a spacer layer, that is, when the planarization layer, the pixel defining layer, or the spacer layer is formed, the planarization layer, the pixel defining layer, or the spacer layer located above the cutting region corresponding to the cutting line does not need to be etched by a photolithography process, but remains to be reused as the protection layer, so that a process for separately preparing the protection layer does not need to be added, the preparation process flow can be simplified, the production cost can be saved, and the production efficiency can be improved. And a plurality of second grooves 002 which are independently arranged and penetrate through the protective layer 07 are arranged in the protective layer 07, and the orthographic projection of each second groove 002 on the substrate 01 and the orthographic projection of the film layer 10 on the substrate 01 have no overlapping area. Because the protective layer 07 is arranged into a double-layer structure, the laser energy absorption and impact force release can be further improved when the laser technology is adopted for cutting in the subsequent process, and the edge film layer is prevented from being heated and impacted to generate cracks to be diffused to the display area, so that the problem that the film layer in the cutting area is easy to generate cracks due to overlarge laser intensity and the cracks are conducted inwards to enter the display area to influence the display in the prior art is solved; and a process for independently preparing the protective layer is not required to be added, so that the preparation process flow can be simplified, the production cost is saved, and the production efficiency is improved.
Fig. 6 is a schematic structural diagram of a display panel according to another embodiment of the invention.
As shown in fig. 6, the present embodiment is different from the embodiment shown in fig. 4 only in the structure of the protective layer 07. The display panel includes: the packaging structure comprises a substrate base plate 01, a barrier layer 02 completely covering the substrate base plate 01, and a film layer 10 positioned on the barrier layer 02, wherein the film layer 10 comprises a buffer layer 03, a gate insulating layer 04 positioned on the buffer layer 03, an interlayer dielectric layer 05 positioned on the gate insulating layer 04, and a packaging layer 06 positioned above the interlayer dielectric layer 05; the portion of the film layer 10 overlapping the protective layer 07 includes a plurality of independently disposed first trenches 001, and the protective layer 07 fills the first trenches 001. These layers are the same as the previous embodiment and are not described herein.
In the display panel shown in fig. 6, the protective layer 07 includes three organic layer structures 071, 072 and 073, which can be reused as a planarization layer, a pixel defining layer or a spacer layer, that is, when the planarization layer, the pixel defining layer or the spacer layer is formed, the planarization layer, the pixel defining layer or the spacer layer located above the cutting region corresponding to the cutting line does not need to be etched by a photolithography process, but remains to be reused as the protective layer, so that a process for separately preparing the protective layer does not need to be added, the preparation process flow can be simplified, the production cost can be saved, and the production efficiency can be improved. And a plurality of second grooves 002 which are independently arranged and penetrate through the protective layer 07 are arranged in the protective layer 07, and the orthographic projection of each second groove 002 on the substrate 01 and the orthographic projection of the film layer 10 on the substrate 01 have no overlapping area. Because the protective layer 07 is set to be a three-layer structure, when the laser technology is adopted for cutting in the subsequent process, the laser energy absorption and impact force release can be further improved, and the edge film layer is prevented from being heated and impacted to generate cracks to be diffused to the display area, so that the problem that the film layer in the cutting area is easy to generate cracks due to overlarge laser intensity and the cracks are conducted inwards to enter the display area to influence the display in the prior art is solved; and a process for independently preparing the protective layer is not required to be added, so that the preparation process flow can be simplified, the production cost is saved, and the production efficiency is improved.
Of course, the protective layer may also have a structure with more than three layers, and the specific number of layers may be set according to practical situations in consideration of process problems, and is not limited herein.
Based on the same inventive concept, an embodiment of the present invention further provides a method for manufacturing a display panel, as shown in fig. 7, including:
s701, forming a plurality of display panels arranged in an array on a display mother board; the display panel comprises a display area and a peripheral area surrounding the display area;
s702, forming at least one protective layer which at least covers a cutting area corresponding to the cutting line at the edge of the peripheral area on the display mother board;
and S703, cutting along a cutting line to form an independent display panel.
According to the preparation method of the display panel provided by the embodiment of the invention, the protective layer is arranged at the edge of the peripheral area of the display panel, so that when the display panel is cut by using a laser technology subsequently, the protective layer can absorb laser energy and release impact force, and prevent the edge film layer from being heated and impacted to generate cracks to be diffused to the display area, thereby solving the problem that the film layer in the cutting area is easy to generate cracks due to overlarge laser intensity in the prior art, and the cracks are conducted inwards to enter the display area to influence the display.
In a specific implementation, the display panel provided in the embodiment of the present invention further includes an organic light emitting layer, and these film layers are the same as those in the prior art and are not described in detail herein.
Based on the same inventive concept, the embodiment of the invention further provides a display device, which comprises any one of the display panels provided by the embodiment of the invention. The principle of the display panel to solve the problem is similar to that of the display panel, so the implementation of the display panel can be referred to the implementation of the display panel, and repeated details are not repeated herein.
The display panel comprises a substrate base plate, wherein the substrate base plate comprises a display area and a peripheral area surrounding the display area, and the display panel further comprises at least one protective layer at least covering a cutting area corresponding to a cutting line of the peripheral area. Because the protective layer is arranged at the edge of the peripheral area of the display panel, when the display panel is cut by using a laser technology subsequently, the protective layer can absorb laser energy and release impact force, and prevent the edge film layer from being heated and impacted to generate cracks to be diffused to the display area, thereby solving the problem that the film layer in the cutting area is easy to generate cracks due to overlarge laser intensity in the prior art, and the cracks are conducted inwards to enter the display area to influence the display.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (7)
1. A display panel comprises a substrate base plate, wherein the substrate base plate comprises a display area and a peripheral area surrounding the display area, and the display panel is characterized by further comprising at least one protective layer at least covering a cutting area corresponding to a cutting line at the edge of the peripheral area;
the display panel further comprises a barrier layer completely covering the substrate base plate, and at least one film layer which is positioned on the barrier layer and covers the display area and the peripheral area; the partial area of the film layer close to the protective layer comprises a plurality of independently arranged first grooves;
the protective layer comprises a plurality of independently arranged second grooves, and the orthographic projection of each second groove on the substrate base plate and the orthographic projection of the film layer on the substrate base plate are not overlapped;
the protective layer is made of organic materials.
2. The display panel of claim 1, further comprising a planarization layer, a pixel defining layer, and a spacer layer; one or a combination of the planarization layer, the pixel definition layer and the spacer layer is multiplexed as a protective layer.
3. The display panel of claim 1, wherein an orthographic projection of the film layer on the substrate base plate has no overlapping area with an orthographic projection of the protective layer on the substrate base plate.
4. The display panel of claim 1, wherein an orthographic projection of the film layer on the substrate base plate has an overlap region with an orthographic projection of the protective layer on the substrate base plate.
5. The display panel of claim 4, wherein the protective layer fills the first trench.
6. The display panel of claim 1, wherein the first trench penetrates the film layer; the second trench penetrates the protection layer.
7. A method for manufacturing a display panel according to any one of claims 1 to 6, comprising:
forming a plurality of display panels arranged in an array on a display mother board; the display panel comprises a substrate base plate, a barrier layer and at least one film layer, wherein the substrate base plate comprises a display area and a peripheral area surrounding the display area, the barrier layer completely covers the substrate base plate, and the at least one film layer is positioned on the barrier layer and covers the display area and the peripheral area;
forming at least one protective layer on the display mother board, wherein the protective layer at least covers a cutting area corresponding to the cutting line at the edge of the peripheral area; the protective layer is made of an organic material, a partial area of the film layer close to the protective layer comprises a plurality of independently arranged first grooves, the protective layer comprises a plurality of independently arranged second grooves, and the orthographic projection of each second groove on the substrate does not have an overlapping area with the orthographic projection of the film layer on the substrate;
and cutting along the cutting line to form independent display panels.
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| CN110429193B (en) * | 2018-08-07 | 2022-07-08 | 广东聚华印刷显示技术有限公司 | Display panel, preparation method thereof and display device |
| CN110931521B (en) | 2018-08-29 | 2022-07-12 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof and display device |
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