CN113160703A - Display panel, manufacturing method thereof and display device - Google Patents
Display panel, manufacturing method thereof and display device Download PDFInfo
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- CN113160703A CN113160703A CN202110220055.3A CN202110220055A CN113160703A CN 113160703 A CN113160703 A CN 113160703A CN 202110220055 A CN202110220055 A CN 202110220055A CN 113160703 A CN113160703 A CN 113160703A
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Abstract
The invention discloses a display panel, a manufacturing method thereof and a display device, and relates to the technical field of display, wherein the display panel comprises: a substrate base plate; a first organic layer; a driving chip; the side wall comprises a first side surface, the first side surface is positioned on one side of the first groove close to the display area, and the edge of the first side surface, which is intersected with the first surface, is in a sawtooth shape; the first side surface comprises a plurality of first sub-portions and a plurality of second sub-portions, the first sub-portions and the second sub-portions are arranged at intervals one by one, edges of the first sub-portions, which are intersected with the first surface, extend along a first direction, and edges of the second sub-portions, which are intersected with the first surface, extend along a second direction; the included angle between the first sub-portion and the first surface is smaller than the included angle between the second sub-portion and the first surface. The invention can effectively avoid the short circuit of the circuit electrically connected with the driving chip caused by the residue of the conducting layer in the groove while avoiding the polyimide used for manufacturing the alignment layer from spreading to the driving chip.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a manufacturing method of the display panel and a display device.
Background
The display panel comprises a display area and a non-display area surrounding the display area, the non-display area comprises a step area, a part of a planarization layer in the display panel, which is located in the step area, is provided with a groove, and the slope (taper) of the groove in the planarization layer in the prior art is steeper, so that metal and Indium Tin Oxide (ITO) residues are easy to be left at the edge of the groove. The driving chip electrically connected to the device or the data line in the array substrate is usually disposed in the trench of the step region, and the metal and the ITO remaining at the edge of the trench easily cause a short circuit of the line electrically connected to the driving chip, which affects the display effect.
When the taper angle of the groove is reduced, the residue of metal and ITO at the edge of the groove is reduced, but when the taper angle of the groove is reduced, the polyimide used for manufacturing the alignment layer easily spreads into the groove, so as to cover the driving chip in the groove, and influence the performance of the driving chip, and thus influence the performance of the display panel.
Disclosure of Invention
In view of the above, the present invention provides a display panel, a manufacturing method thereof, and a display device, so as to effectively prevent a short circuit of a line electrically connected to a driving chip caused by a conductive layer remaining in a groove while preventing polyimide used for manufacturing an alignment layer from spreading onto the driving chip.
The present invention provides a display panel including: the display device comprises a substrate base plate, a first electrode and a second electrode, wherein the substrate base plate comprises a display area and a non-display area surrounding the display area, the non-display area comprises a step area, and the step area is positioned on one side of the display area along a first direction; the first organic layer is positioned on one side of the substrate base plate and comprises a first groove, the first groove is positioned in the step area and penetrates through the first organic layer in the direction vertical to the substrate base plate; the driving chip is positioned on one side of the substrate base plate and is positioned in the first groove; the first organic layer comprises a first surface, a second surface and a side wall positioned between the first surface and the second surface, the first surface and the second surface are oppositely arranged on two sides of the first organic layer in the direction vertical to the substrate base plate, the first surface is positioned on one side of the first organic layer close to the substrate base plate, and the side wall surrounds and forms a first groove; the side wall comprises a first side surface, the first side surface is positioned on one side of the first groove close to the display area, and the edge of the first side surface, which is intersected with the first surface, is in a sawtooth shape; the first side surface comprises a plurality of first sub-portions and a plurality of second sub-portions, the first sub-portions and the second sub-portions are arranged at intervals one by one, edges of the first sub-portions, which are intersected with the first surface, extend along a first direction, edges of the second sub-portions, which are intersected with the first surface, extend along a second direction, and the first direction and the second direction are intersected; the included angle between the first sub-portion and the first surface is smaller than the included angle between the second sub-portion and the first surface.
Based on the same idea, the invention also provides a display device, which comprises the display panel.
Based on the same idea, the invention further provides a manufacturing method of the display panel, which is used for manufacturing the display panel provided by the invention and comprises the following steps: providing a substrate, wherein the substrate comprises a display area and a non-display area surrounding the display area, the non-display area comprises a step area, and the step area is positioned on one side of the display area along a first direction; forming a first organic layer on one side of the substrate base plate, wherein the first organic layer comprises a first surface and a second surface which are oppositely arranged on two sides of the first organic layer in the direction vertical to the substrate base plate, and the first surface is positioned on one side of the first organic layer close to the substrate base plate; forming a first groove in the first organic layer, wherein the first groove is positioned in the step area and penetrates through the first organic layer in the direction vertical to the substrate base plate, the first organic layer comprises a side wall positioned between the first surface and the second surface, and the side wall surrounds and forms the first groove; the side wall comprises a first side surface, the first side surface is positioned on one side of the first groove close to the display area, and the edge of the first side surface, which is intersected with the first surface, is in a sawtooth shape; the first side surface comprises a plurality of first sub-portions and a plurality of second sub-portions, the first sub-portions and the second sub-portions are arranged at intervals one by one, edges of the first sub-portions, which are intersected with the first surface, extend along a first direction, edges of the second sub-portions, which are intersected with the first surface, extend along a second direction, and the first direction and the second direction are intersected; the included angle between the first sub-part and the first surface is smaller than the included angle between the second sub-part and the first surface; and a driving chip is bound on one side of the substrate base plate and is positioned in the first groove.
Compared with the prior art, the display panel, the manufacturing method thereof and the display device provided by the invention at least realize the following beneficial effects:
in the display panel provided by the invention, the included angle between the first sub-part and the first surface is theta 1, the included angle between the second sub-part and the first surface is theta 2, and theta 1 is smaller than theta 2, namely, the included angle between the second sub-part and the first surface is larger, when the film layer made of polyimide is arranged on one side of the first organic layer far away from the substrate base plate, the polyimide is effectively prevented from spreading to the driving chip along the first direction, and the performance of the driving chip is prevented from being influenced. Although the larger included angle between the second sub-portion and the first surface increases the possibility of metal and residue at the corner between the second sub-portion and the substrate, the smaller included angle between the first sub-portion and the first surface effectively prevents metal and ITO residue from existing at the corner between the first sub-portion and the substrate, and the first sub-portion and the second sub-portion are arranged at intervals, so that even if metal and ITO residue exist at the corner between the first side surface and the substrate, the metal and ITO residue only exist at the corner between the second sub-portion and the first surface, that is, the arrangement of the first sub-portion effectively prevents metal and ITO residue connected at the corner between the first side surface and the substrate, and the metal and ITO residue at the corner between each second sub-portion and the first surface are in a mutually insulated state, thereby effectively preventing short circuit from occurring between circuits electrically connected with the driving chip, the display effect is prevented from being influenced. Further, although a smaller angle between the first sub-portion and the first surface may increase the possibility of polyimide spreading into the first groove along the first sub-portion, an edge of the first sub-portion intersecting the first surface extends along the first direction, and polyimide may spread along the second direction and may not spread onto the driving chip. Therefore, the display panel provided by the invention can prevent the polyimide from spreading to the driving chip, thereby avoiding affecting the performance of the driving chip, and can also prevent short circuit from occurring between circuits electrically connected with the driving chip, thereby avoiding affecting the display effect.
Of course, it is not necessary for any product in which the present invention is practiced to specifically achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic plan view of a display panel according to the present invention;
FIG. 2 is a cross-sectional view of the display panel of FIG. 1 taken along line A-A';
FIG. 3 is a cross-sectional view of the display panel of FIG. 1 taken along line B-B';
FIG. 4 is a schematic structural diagram of a portion C of the display panel shown in FIG. 1;
FIG. 5 is a schematic view of another structure of the portion C of the display panel shown in FIG. 1;
FIG. 6 is a schematic view of a portion C of the display panel shown in FIG. 1;
FIG. 7 is another cross-sectional view of the display panel of FIG. 1 taken along line B-B';
FIG. 8 is a flowchart illustrating a method for fabricating a display panel according to the present invention;
fig. 9 is a schematic plan view of a display device according to the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 is a schematic plan view of a display panel provided by the present invention, fig. 2 is a cross-sectional view of the display panel shown in fig. 1 along a-a ', and fig. 3 is a cross-sectional view of the display panel shown in fig. 1 along B-B', and this embodiment provides a display panel including a substrate 10, where the substrate 10 may be a rigid substrate or a flexible substrate. When the base substrate 10 is a rigid substrate, the base substrate 10 may be a glass substrate. When the base substrate 10 is a flexible substrate, the base substrate 10 may be a Polyimide (PI) substrate. The substrate 10 includes a display area AA and a non-display area NA surrounding the display area AA, an area of the display panel corresponding to the display area AA is used for displaying, an area of the display panel corresponding to the non-display area NA is not used for displaying, and the non-display area NA may be provided with structures such as circuit elements and wires. The non-display area NA includes a stepped area NA1, and the stepped area NA1 is located at one side of the display area AA along the first direction X.
The display panel further includes a first organic layer 20, the first organic layer 20 is disposed on one side of the substrate base plate 10, the first organic layer 20 includes a first trench 21, the first trench 21 is disposed in the stepped area NA1, and the first trench 21 penetrates the first organic layer 20 in a direction perpendicular to the substrate base plate 10. Optionally, the first organic layer 20 is a planarization layer.
The display panel further includes a driving chip 30, the driving chip 30 is bonded to one side of the substrate base plate 10, and the driving chip 30 is located in the first trench 21, so that the driving chip 30 and the first organic layer 20 are located on the same side of the substrate base plate 10.
The first organic layer 20 includes a first surface 22, a second surface 23, and a sidewall 24, in a direction perpendicular to the substrate 10, the first surface 22 and the second surface 23 are oppositely disposed on two sides of the first organic layer 20, the first surface 22 is located on a side of the first organic layer 20 close to the substrate 10, the second surface 23 is located on a side of the first organic layer 20 away from the substrate 10, the sidewall 24 is located between the first surface 22 and the second surface 23, and the sidewall 24 surrounds and forms the first trench 21.
The sidewall 24 includes a first side surface 240, and the first side surface 240 is located on a side of the first groove 21 close to the display area AA, where the first side surface 240 includes a plurality of first sub-portions 241 and a plurality of second sub-portions 242, the first sub-portions 241 and the second sub-portions 242 are arranged at intervals, an edge where the first sub-portions 241 intersect with the first surface 22 extends along a first direction X, an edge where the second sub-portions 242 intersect with the first surface 22 extends along a second direction Y, and the first direction X and the second direction Y intersect with each other, that is, an edge where the first side surface 240 intersects with the first surface 22 is zigzag.
An included angle between the first sub-portion 241 and the first surface 22 is θ 1, an included angle between the second sub-portion 242 and the first surface 22 is θ 2, and θ 1 is smaller than θ 2, that is, the included angle between the second sub-portion 242 and the first surface 22 is larger, when the film layer made of polyimide is disposed on the side of the first organic layer 20 away from the substrate 10, the polyimide is effectively prevented from spreading onto the driving chip 30 along the first direction X, and the performance of the driving chip 30 is prevented from being affected. Although the larger angle between the second sub-portion 242 and the first surface 22 increases the possibility of the metal and the conductive layer such as ITO remaining at the corner between the second sub-portion 242 and the substrate 10, the smaller angle between the first sub-portion 241 and the first surface 22 effectively prevents the metal and the ITO remaining at the corner between the first sub-portion 241 and the substrate 10, and the first sub-portions 241 and the second sub-portions 242 are arranged at intervals, so that even if the metal and the ITO remaining at the corner between the first side surface 240 and the substrate 10, the metal and the ITO remaining only exist at the corner between the second sub-portion 242 and the first surface 22, that is, the arrangement of the first sub-portion 241 effectively prevents the metal and the ITO remaining at the corner between the first side surface 240 and the substrate 10, and the metal and the ITO remaining at the corner between each second sub-portion 242 and the first surface 22 are insulated from each other, effectively avoiding short circuit between the circuits electrically connected with the driving chip 30 and avoiding influencing the display effect. Further, although the smaller angle between the first sub-portion 241 and the first surface 22 increases the possibility of polyimide spreading into the first groove 21 along the first sub-portion 241, the edge where the first sub-portion 241 intersects with the first surface 22 extends along the first direction X, and the polyimide spreads along the second direction Y and does not spread onto the driving chip 30. Therefore, the display panel provided by the application can realize avoiding the polyimide to stretch to the driving chip 30, thereby avoiding influencing the performance of the driving chip 30, and meanwhile, avoiding the short circuit between the circuits electrically connected with the driving chip 30, and avoiding influencing the display effect.
Optionally, the first direction X is perpendicular to the second direction Y, so as to further prevent the polyimide from spreading onto the driving chip 30 along the first direction X, thereby avoiding affecting the performance of the driving chip 30.
Fig. 4 is a schematic structural diagram of a portion C of the display panel shown in fig. 1, and referring to fig. 4, in some alternative embodiments, the driving chip 30 includes a plurality of pads 31 arranged along the second direction Y, and in the first direction X, the first sub-portion 241 is located between any two adjacent pads 31, so that polyimide is effectively prevented from spreading onto the pads 31 of the driving chip 30 when the polyimide spreads into the first grooves 21 along the first sub-portion 241, and performance of the driving chip 30 is effectively prevented from being affected by the polyimide covering the pads 31 of the driving chip 30.
With continued reference to fig. 4, in some alternative embodiments, in the first direction X, one pad 31 corresponds to one second sub-portion 242, and since the first sub-portion 241 is disposed to effectively avoid the existence of the metal and the ITO residue connected at the corner between the first side 240 and the substrate 10, so that the metal and the ITO residue at the corner between each second sub-portion 242 and the first surface 22 are in an insulated state, the provision of at least one first sub-portion 241 between any two adjacent pads 31 can effectively avoid the occurrence of short circuit between the lines electrically connected to different pads 31 in the driving chip 30, and avoid the influence on the display effect.
And in the second direction Y, the length of the second sub-portion 242 is greater than the width of the corresponding pad 31, so as to further avoid short circuit between the lines electrically connected to different pads 31 in the driving chip 30.
With continued reference to fig. 4, in some alternative embodiments, in the first direction X, a first sub-portion 241 is disposed between any two adjacent pads 31, so that not only can polyimide be prevented from spreading onto the pads 31, but also short circuits between lines electrically connected to different pads 31 in the driver chip 30 can be prevented, and the difficulty in disposing the first side 240 is effectively reduced, the production efficiency is improved, and the production cost is reduced.
Fig. 5 is another schematic structural diagram of the portion C of the display panel shown in fig. 1, referring to fig. 5, since the first sub-portions 241 are disposed to effectively avoid the existence of metal and ITO residues that are connected through the corners between the first side surface 240 and the substrate 10, so that the metal and ITO residues at the corners between the second sub-portions 242 and the first surface 22 are in an insulated state, in some alternative embodiments, two first sub-portions 241 are disposed between any two adjacent pads 31 in the first direction X, so as to further avoid short circuit between lines electrically connected to different pads 31 in the driving chip 30, and avoid affecting the display effect.
It should be noted that in other embodiments of the present invention, in the first direction X, the first sub-portion 241 with other values may be disposed between any two adjacent pads 31, which is not described herein again.
Fig. 6 is a schematic structural diagram of a portion C of the display panel shown in fig. 1, and referring to fig. 6, in some alternative embodiments, the display panel further includes a plurality of gold fingers 40 arranged along the second direction Y, at least one pad 31 is electrically connected to at least one gold finger 40, both the pad 31 and the gold finger 40 have conductivity, and the pad 31 is electrically connected to the gold finger 40 to implement transmission of an electrical signal in the flexible circuit board to a corresponding trace or circuit in the display panel.
The vertical projection of the golden finger 40 on the substrate 10 overlaps with the vertical projection of the corresponding second sub-portion 242 on the substrate 10, the golden finger 40 extends through the area of the display panel where the corresponding second sub-portion 242 is located, and because at least one first sub-portion 241 is arranged between any two adjacent bonding pads 31, the arrangement of the first sub-portion 241 effectively avoids the existence of the metal and the ITO residue which are connected at the corner between the first side surface 240 and the substrate 10, so that the metal and the ITO residue at the corner between each second sub-portion 242 and the first surface 22 are in an insulated state, and therefore, the occurrence of short circuit between the golden fingers 41 electrically connected with different bonding pads 31 in the driving chip 30 can be effectively avoided, and the display effect is prevented from being influenced.
With continued reference to fig. 4, in some alternative embodiments, the first side 240 is located on a side of the first trench 21 close to the display area AA, and an edge of the first sub-portion 241 intersecting the first surface 22 extends along the first direction X, where a length of the first sub-portion 241 is less than or equal to 30 μm, which effectively reduces a width of the first side 240 in the first direction X of a vertical projection pattern of the substrate base plate 10, and is beneficial to implement a narrow bezel.
Fig. 7 is another cross-sectional view of the display panel shown in fig. 1 along B-B', and referring to fig. 7, in some alternative embodiments, the display panel further includes an alignment layer 50, the alignment layer 50 is located on a side of the first organic layer 20 away from the substrate 10, the alignment layer 50 is made of polyimide, an included angle between the second sub-portion 242 and the first surface 22 is relatively large, when the alignment layer 50 is located on a side of the first organic layer 20 away from the substrate 10, the polyimide is effectively prevented from spreading onto the driving chip 30 along the first direction X, and the performance of the driving chip 30 is prevented from being affected.
Fig. 8 is a flowchart of a manufacturing method of a display panel provided by the present invention, and referring to fig. 1-3 and fig. 8, the present embodiment provides a manufacturing method of a display panel, for manufacturing the display panel provided by the present invention, the manufacturing method includes:
s1, providing a substrate base plate.
The substrate includes a display region and a non-display region surrounding the display region, the non-display region including a stepped region, the stepped region being located at one side of the display region along a first direction.
S2, forming a first organic layer on one side of the base substrate.
In the direction perpendicular to the substrate base plate, the first organic layer comprises a first surface and a second surface which are oppositely arranged on two sides of the first organic layer, and the first surface is positioned on one side of the first organic layer close to the substrate base plate.
S3, forming a first trench in the first organic layer.
The first groove is positioned in the step area, penetrates through the first organic layer in the direction perpendicular to the substrate base plate, and comprises a side wall positioned between the first surface and the second surface, and the side wall surrounds and forms the first groove.
The side wall comprises a first side surface, the first side surface is positioned on one side of the first groove close to the display area, and the edge of the first side surface, which is intersected with the first surface, is in a sawtooth shape; the first side surface comprises a plurality of first sub-portions and a plurality of second sub-portions, the first sub-portions and the second sub-portions are arranged at intervals one by one, edges of the first sub-portions, which are intersected with the first surface, extend along a first direction, edges of the second sub-portions, which are intersected with the first surface, extend along a second direction, and the first direction and the second direction are intersected; the included angle between the first sub-portion and the first surface is smaller than the included angle between the second sub-portion and the first surface.
And S4, binding a driving chip on one side of the substrate base plate, wherein the driving chip is positioned in the first groove.
With continued reference to fig. 1 to fig. 3, in the display panel manufactured by the manufacturing method of the display panel provided by the present invention, an included angle between the first sub-portion 241 and the first surface 22 is θ 1, an included angle between the second sub-portion 242 and the first surface 22 is θ 2, and θ 1 is smaller than θ 2, that is, the included angle between the second sub-portion 242 and the first surface 22 is larger, when the film layer made of polyimide is disposed on the side of the first organic layer 20 away from the substrate 10, the polyimide is effectively prevented from spreading onto the driving chip 30 along the first direction X, and the performance of the driving chip 30 is prevented from being affected. Although the larger angle between the second sub-portion 242 and the first surface 22 increases the possibility of metal and ITO residue existing at the corner between the second sub-portion 242 and the substrate 10, the smaller angle between the first sub-portion 241 and the first surface 22 effectively prevents metal and ITO residue existing at the corner between the first sub-portion 241 and the substrate 10, and the first sub-portions 241 and the second sub-portions 242 are arranged at intervals, so that even if metal and ITO residue exist at the corner between the first side surface 240 and the substrate 10, the metal and ITO residue only exists at the corner between the second sub-portion 242 and the first surface 22, that is, the arrangement of the first sub-portion 241 effectively prevents metal and ITO residue existing at the corner between the first side surface 240 and the substrate 10, and the metal and ITO residue at the corner between each second sub-portion 242 and the first surface 22 are in an insulated state, effectively avoiding short circuit between the circuits electrically connected with the driving chip 30 and avoiding influencing the display effect. Further, although the smaller angle between the first sub-portion 241 and the first surface 22 increases the possibility of polyimide spreading into the first groove 21 along the first sub-portion 241, the edge where the first sub-portion 241 intersects with the first surface 22 extends along the first direction X, and the polyimide spreads along the second direction Y and does not spread onto the driving chip 30. Therefore, the display panel provided by the application can realize avoiding the polyimide to stretch to the driving chip 30, thereby avoiding influencing the performance of the driving chip 30, and meanwhile, avoiding the short circuit between the circuits electrically connected with the driving chip 30, and avoiding influencing the display effect.
In some optional embodiments, please refer to fig. 9, fig. 9 is a schematic plan view of a display device provided in the present invention, and the display device 1000 provided in this embodiment includes the display panel 000 provided in the above embodiments of the present invention. The embodiment of fig. 9 only uses a mobile phone as an example to describe the display device 1000, and it should be understood that the display device 1000 provided in the embodiment of the present invention may also be other display devices 1000 having a display function, such as a computer, a television, a vehicle-mounted display device, and the present invention is not limited thereto. The display device 1000 according to the embodiment of the present invention has the beneficial effects of the display panel 000 according to the embodiment of the present invention, and specific descriptions of the display panel 000 according to the above embodiments may be specifically referred to, and this embodiment is not described herein again.
As can be seen from the above embodiments, the display panel, the manufacturing method thereof, and the display device provided by the present invention at least achieve the following beneficial effects:
in the display panel provided by the invention, the included angle between the first sub-part and the first surface is theta 1, the included angle between the second sub-part and the first surface is theta 2, and theta 1 is smaller than theta 2, namely, the included angle between the second sub-part and the first surface is larger, when the film layer made of polyimide is arranged on one side of the first organic layer far away from the substrate base plate, the polyimide is effectively prevented from spreading to the driving chip along the first direction, and the performance of the driving chip is prevented from being influenced. Although the larger included angle between the second sub-portion and the first surface increases the possibility of metal and residue at the corner between the second sub-portion and the substrate, the smaller included angle between the first sub-portion and the first surface effectively prevents metal and ITO residue from existing at the corner between the first sub-portion and the substrate, and the first sub-portion and the second sub-portion are arranged at intervals, so that even if metal and ITO residue exist at the corner between the first side surface and the substrate, the metal and ITO residue only exist at the corner between the second sub-portion and the first surface, that is, the arrangement of the first sub-portion effectively prevents metal and ITO residue connected at the corner between the first side surface and the substrate, and the metal and ITO residue at the corner between each second sub-portion and the first surface are in a mutually insulated state, thereby effectively preventing short circuit from occurring between circuits electrically connected with the driving chip, the display effect is prevented from being influenced. Further, although a smaller angle between the first sub-portion and the first surface may increase the possibility of polyimide spreading into the first groove along the first sub-portion, an edge of the first sub-portion intersecting the first surface extends along the first direction, and polyimide may spread along the second direction and may not spread onto the driving chip. Therefore, the display panel provided by the invention can prevent the polyimide from spreading to the driving chip, thereby avoiding affecting the performance of the driving chip, and can also prevent short circuit from occurring between circuits electrically connected with the driving chip, thereby avoiding affecting the display effect.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (11)
1. A display panel, comprising:
the display device comprises a substrate base plate, a first substrate and a second substrate, wherein the substrate base plate comprises a display area and a non-display area surrounding the display area, the non-display area comprises a step area, and the step area is positioned on one side of the display area along a first direction;
the first organic layer is positioned on one side of the substrate base plate and comprises a first groove, the first groove is positioned in the step area, and the first groove penetrates through the first organic layer in the direction vertical to the substrate base plate;
the driving chip is positioned on one side of the substrate base plate and is positioned in the first groove;
the first organic layer comprises a first surface, a second surface and a side wall positioned between the first surface and the second surface, the first surface and the second surface are oppositely arranged on two sides of the first organic layer in a direction perpendicular to the substrate, the first surface is positioned on one side of the first organic layer close to the substrate, and the side wall surrounds and forms the first groove;
the side wall comprises a first side surface, the first side surface is positioned on one side of the first groove close to the display area, and the edge of the first side surface, which is intersected with the first surface, is in a sawtooth shape;
the first side surface comprises a plurality of first sub-portions and a plurality of second sub-portions, the first sub-portions and the second sub-portions are arranged at intervals one by one, edges of the first sub-portions, which intersect with the first surface, extend along a first direction, edges of the second sub-portions, which intersect with the first surface, extend along a second direction, and the first direction and the second direction intersect;
an included angle between the first sub-portion and the first surface is smaller than an included angle between the second sub-portion and the first surface.
2. The display panel according to claim 1,
the driving chip comprises a plurality of bonding pads arranged along the second direction, and the first sub-portion is located between any two adjacent bonding pads in the first direction.
3. The display panel according to claim 2,
at least one first sub-portion is arranged between any two adjacent pads in the first direction;
one of the pads corresponds to one of the second sub-portions, and the length of the second sub-portion in the second direction is greater than the width of the pad corresponding to the second sub-portion.
4. The display panel according to claim 3,
the display panel further comprises a plurality of golden fingers arranged along the second direction, and at least one pad is electrically connected with at least one golden finger;
the vertical projection of the golden finger on the substrate base plate is overlapped with the vertical projection part of the second sub-part corresponding to the golden finger on the substrate base plate.
5. The display panel according to claim 3,
one first sub-portion is disposed between any adjacent two of the pads in the first direction.
6. The display panel according to claim 3,
two first sub-portions are disposed between any adjacent two of the pads in the first direction.
7. The display panel according to claim 1,
the first direction and the second direction are perpendicular.
8. The display panel according to claim 1,
the length of the first sub-portion is equal to or less than 30 μm in the first direction.
9. The display panel according to claim 1,
the display panel further comprises an alignment layer, and the alignment layer is positioned on one side, away from the substrate base plate, of the first organic layer.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
11. A method for manufacturing a display panel, which is used for manufacturing the display panel according to any one of claims 1 to 9, comprising:
providing a substrate, wherein the substrate comprises a display area and a non-display area surrounding the display area, the non-display area comprises a step area, and the step area is positioned on one side of the display area along a first direction;
forming a first organic layer on one side of the substrate base plate, wherein the first organic layer comprises a first surface and a second surface which are oppositely arranged on two sides of the first organic layer in a direction vertical to the substrate base plate, and the first surface is positioned on one side, close to the substrate base plate, of the first organic layer;
forming a first trench in the first organic layer, the first trench being located in the step region, the first trench penetrating the first organic layer in a direction perpendicular to the substrate, the first organic layer including a sidewall located between the first surface and the second surface, the sidewall surrounding the first trench;
the side wall comprises a first side surface, the first side surface is positioned on one side of the first groove close to the display area, and the edge of the first side surface, which is intersected with the first surface, is in a sawtooth shape;
the first side surface comprises a plurality of first sub-portions and a plurality of second sub-portions, the first sub-portions and the second sub-portions are arranged at intervals one by one, edges of the first sub-portions, which intersect with the first surface, extend along a first direction, edges of the second sub-portions, which intersect with the first surface, extend along a second direction, and the first direction and the second direction intersect;
the included angle between the first sub-portion and the first surface is smaller than the included angle between the second sub-portion and the first surface;
and binding a driving chip at one side of the substrate base plate, wherein the driving chip is positioned in the first groove.
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