CN112951096B - Display panel and preparation method thereof - Google Patents
Display panel and preparation method thereof Download PDFInfo
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- CN112951096B CN112951096B CN202110374422.5A CN202110374422A CN112951096B CN 112951096 B CN112951096 B CN 112951096B CN 202110374422 A CN202110374422 A CN 202110374422A CN 112951096 B CN112951096 B CN 112951096B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
Abstract
The invention relates to a display panel and a preparation method thereof. The display panel comprises a display area, a wiring area, a lap joint area, a slotting area and a bending area; the display area, the wiring area, the lap joint area, the slotting area and the bending area are sequentially arranged; the orthographic projection of the wiring area and the overlapping area in the display area is positioned in the orthographic projection of the slotted area in the display area; the display panel also comprises a first inorganic layer, a planarization layer and a second inorganic layer; the first inorganic layer is positioned in the wiring area, the lap joint area and the slotting area; the planarization layer is positioned on the first inorganic layer and is positioned in the wiring area, the lap joint area and the slotting area, the planarization layer comprises a groove, and the groove is positioned in the slotting area; the second inorganic layer is positioned on one side of the planarization layer, which is far away from the first inorganic layer, the second inorganic layer is positioned in the wiring area, the lap joint area and at least part of the groove area, and the second inorganic layer is in contact with the first inorganic layer in the groove. According to the embodiment of the invention, the yield of the display panel can be improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a preparation method thereof.
Background
In the related art, with the development of display technologies, the market demand for a display panel with a high screen ratio is more and more urgent, and meanwhile, the display panel is also developed towards being lighter and thinner, for example, touch On Cell (out-Cell Touch display panel) can make the display panel lighter and thinner. Touch On Cell can adopt FMLOC (Flexible Metal Layer On Cell, flexible multilayer structure On screen) Touch scheme.
In the related art, a high-screen-ratio display panel can carry a Pad bonding (terminal Bending) technology, the technology needs to be bent before routing of a Pad (terminal), a touch line in a Bending area cannot be designed on a touch layer, a jumper needs to be lapped to a driving circuit layer, and then the jumper is lapped back to the touch layer. However, since FMLOC is manufactured after the TFE (Thin-Film Encapsulation) and EVEN (evaporation) process is completed, the inorganic layer in FMLOC is manufactured by a low temperature process, and the portion outside the display region is plated on the Planarization Layer (PLN) on the driving circuit layer, which is unstable in structure, may be peeled off under the immersion of water and chemical, and if the inorganic layer in FMLOC is peeled off, the trace between the display region and the bending region may be adversely affected, thereby reducing the yield of the display panel.
Disclosure of Invention
The invention provides a display panel and a preparation method thereof, which aim to solve the defects in the related art.
According to a first aspect of embodiments of the present invention, there is provided a display panel including a display area and a peripheral area, the peripheral area being adjacent to the display area; the peripheral area comprises a wiring area, a lap joint area, a slotting area and a bending area; in a first direction, the display area, the routing area, the lap joint area, the slotting area and the bending area are sequentially arranged; the orthographic projection of the wiring area on the display area is positioned in the orthographic projection of the slotted area on the display area, and the orthographic projection of the lapping area on the display area is positioned in the orthographic projection of the slotted area on the display area;
the display panel further includes: the touch control panel comprises a driving circuit layer, a planarization layer and a touch control layer; the driving circuit layer comprises a first inorganic layer, and the touch layer comprises a second inorganic layer;
the first inorganic layer is at least positioned in the wiring area, the lap joint area and the slotting area; the planarization layer is positioned on the first inorganic layer and at least positioned in the routing area, the lap joint area and the slotting area, the planarization layer comprises a groove, and the groove is positioned in the slotting area; the second inorganic layer is located on one side, far away from the first inorganic layer, of the planarization layer, extends from the wiring area to the grooving area, is located in the wiring area, the lap joint area and at least part of the grooving area, and is in contact with the first inorganic layer in the groove.
In one embodiment, the trenched region extends from one side of the planarization layer to the other side of the planarization layer in a second direction that intersects the first direction.
In one embodiment, a projection of the grooved region on the first inorganic layer is rectangular.
In one embodiment, the slotted zone surrounds the overlap region from at least two sides.
In one embodiment, the slotted region surrounds the overlap region from three sides.
In one embodiment, the number of the routing areas is two, the number of the overlapping areas is two, the number of the slotting areas is two, and the number of the grooves is two;
for each slotted region, in a first direction, there is one routing region whose orthographic projection in the display region is located in the orthographic projection of the slotted region in the display region, and there is one overlapping region whose orthographic projection in the display region is located in the orthographic projection of the slotted region in the display region;
a space exists between the two slotted regions; there is one said groove per each said grooved region.
In one embodiment, the touch layer includes a touch line, a second metal layer and a third metal layer;
the touch line is at least positioned in the wiring area and the lap joint area; the driving circuit layer comprises a first metal layer, the first metal layer is at least positioned in the lap joint area and the bending area, and the touch control line is lapped to the first metal layer in the lap joint area;
the second inorganic layer is located between the second metal layer and the third metal layer, the second metal layer comprises a first touch electrode, the third metal layer comprises a second touch electrode, and the touch line is located in one of the second metal layer and the third metal layer.
In one embodiment, the driving circuit layer includes a pixel circuit, the pixel circuit is located in the display area, the pixel circuit includes a capacitor, the capacitor includes a first electrode and a second electrode, the first inorganic layer is also located in the display area, and the first inorganic layer is located between the first electrode and the second electrode.
According to a second aspect of the embodiments of the present invention, there is provided a method for manufacturing a display panel, the display panel including a display area and a peripheral area, the peripheral area being adjacent to the display area; the peripheral area comprises a wiring area, a lap joint area, a slotting area and a bending area; in a first direction, the display area, the routing area, the lap joint area, the slotting area and the bending area are sequentially arranged; the orthographic projection of the wiring area on the display area is positioned in the orthographic projection of the slotted area on the display area, and the orthographic projection of the lap joint area on the display area is positioned in the orthographic projection of the slotted area on the display area; the method comprises the following steps:
forming a driving circuit layer including a first inorganic layer; the first inorganic layer is at least positioned in the wiring area, the lap joint area and the slotting area;
forming a planarization layer, wherein the planarization layer is located on the first inorganic layer and at least located in the routing area, the lap joint area and the groove area, the planarization layer comprises a groove, and the groove is located in the groove area;
forming a touch layer, wherein the touch layer comprises a second inorganic layer, the second inorganic layer is positioned on one side of the planarization layer, which is far away from the first inorganic layer, the second inorganic layer extends from the wiring area to the slotting area, and is positioned in the wiring area, the lap-joint area and at least part of the slotting area, and in the groove, the second inorganic layer is in contact with the first inorganic layer.
In one embodiment, the forming a planarization layer includes:
forming an organic layer, wherein the organic layer is positioned on the first inorganic layer and is at least positioned in the wiring area, the lap joint area and the slotting area; the surface of the organic layer far away from the first inorganic layer is a plane;
and patterning the organic layer by using a mask to obtain the planarization layer.
According to the above embodiment, since the planarization layer includes the groove, the groove is located in the groove area, the groove area is located on one side of the routing area and the overlapping area close to the bending area, the second inorganic layer in the touch layer is located on one side of the planarization layer away from the first inorganic layer, and extends from the routing area to the groove area, the second inorganic layer is located in the routing area, the overlapping area and at least a part of the groove area, and in the groove area, the second inorganic layer contacts with the first inorganic layer, and since the second inorganic layer and the first inorganic layer are both inorganic layers, the contact part between the two layers has good compactness. When the boundary of the second inorganic layer close to one side of the bending region is positioned between the groove and the bending region, even if the boundary of the second inorganic layer close to one side of the bending region is stripped, the stripping can be avoided from extending to the wiring region and the lap joint region, and when the boundary of the second inorganic layer close to one side of the bending region is positioned in the groove, the boundary of the second inorganic layer close to one side of the bending region can be prevented from being stripped, so that the adverse effect on the wiring between the display region and the bending region can be avoided, and the yield of the display panel can be improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural view of a display panel according to the related art;
fig. 2 is a schematic view showing a structure of another display panel according to the related art;
fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram illustrating another display panel according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram illustrating another display panel according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram illustrating another display panel according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram illustrating another display panel according to an embodiment of the present invention;
fig. 8 is a flowchart illustrating a method of manufacturing a display panel according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
In the related art, as shown in fig. 1 and 2, in the region between the display region 11 and the bending region 12, the inorganic layer 13 in the touch layer (not shown) is easily peeled off, and the peeling region 14 extends along the boundary of the groove 16 on the planarization layer 15, thereby adversely affecting the touch line 17 and the bonding region 18, and reducing the yield of the display panel. In fig. 1 to 2, the planarization layer 15 is located on the inorganic layer 19 in the driving circuit layer, and the flexible film layer 110 is located in the bending region 12.
In order to solve the above technical problems, embodiments of the present invention provide a display panel and a manufacturing method thereof, which can avoid adverse effects on routing between a display area and a bending area, and improve yield of the display panel.
The embodiment of the invention provides a display panel. As shown in fig. 3, the display panel includes a display area 11 and a peripheral area (not shown), which is adjacent to the display area 11.
As shown in fig. 3, the peripheral region includes a trace region 31, a lap region 18, a grooved region 32 and a bending region 12. In the first direction Y, the display area 11, the trace area 31, the lap area 18, the grooved area 32 and the bending area 12 are sequentially arranged. The orthographic projection of the routing area 31 on the display area 11 is positioned in the orthographic projection of the slotted area 32 on the display area 11, and the orthographic projection of the lapping area 18 on the display area 11 is positioned in the orthographic projection of the slotted area 32 on the display area 11.
In this embodiment, as shown in fig. 4, the display panel further includes a driving circuit layer (not shown), a planarization layer 15 and a touch layer (not shown). The driving circuit layer includes a first inorganic layer 41, and the touch layer includes a second inorganic layer 42.
The first inorganic layer 41 is at least located in the trace region 31, the lap region 18 and the grooved region 32. The planarization layer 15 is disposed on the first inorganic layer 41 and at least located in the trace area 31, the lap joint area 18 and the grooved area 32, the planarization layer 15 includes a groove 151, and the groove 151 is located in the grooved area 32. The second inorganic layer 42 is disposed on a side of the planarization layer 15 away from the first inorganic layer 41, and the second inorganic layer 42 extends from the trace region 31 to the trench region 32 and is disposed in the trace region 31, the lap region 18 and at least a portion of the trench region 32. In the groove 151, the second inorganic layer 42 is in contact with the first inorganic layer 41.
In this embodiment, since the planarization layer 15 includes the groove 151, the groove 151 is located in the groove opening region 32, the groove opening region 32 is located on one side of the trace region 31 and the overlapping region 18 close to the bending region 12, the second inorganic layer 42 in the touch layer is located on one side of the planarization layer 15 away from the first inorganic layer 41, the trace region 31 extends toward the groove opening region 32, the second inorganic layer 42 is located in the trace region 31, the overlapping region 18 and at least a portion of the groove opening region 32, and in the groove opening region 32, the second inorganic layer 42 contacts with the first inorganic layer 41, since the second inorganic layer 42 and the first inorganic layer 41 are both inorganic layers, the contact density between the two layers is good. When the boundary of the second inorganic layer 42 close to the bending region 12 is located between the groove 151 and the bending region 12, even if the boundary of the second inorganic layer 42 close to the bending region 12 is peeled, the peeling can be prevented from extending to the trace region 31 and the lap joint region 18, and when the boundary of the second inorganic layer 42 close to the bending region 12 is located in the groove 151, the peeling can be prevented from occurring on the boundary of the second inorganic layer 42 close to the bending region 12, so that the adverse effect on the trace between the display region 11 and the bending region 12 can be avoided, and the yield of the display panel can be improved.
The display panel provided by the embodiment of the present invention is briefly described above, and the display panel provided by the embodiment of the present invention is described in detail below.
The embodiment of the invention also provides a display panel. As shown in fig. 3, the display panel includes a display area 11 and a peripheral area, and the peripheral area is adjacent to the display area 11. The peripheral area may surround the display area 11, but is not limited thereto.
As shown in fig. 3, the peripheral region includes a trace region 31, a lap region 18, a grooved region 32 and a bending region 12. The trace area 31, the lap area 18, and the grooved area 32 are located on the same side of the display area 11 as the bending area 12. As shown in fig. 3, in the first direction Y, the display region 11, the trace region 31, the lap region 18, the grooved region 32, and the bending region 12 are sequentially arranged.
In the present embodiment, as shown in fig. 3, an orthogonal projection of the trace area 31 in the display area 11 is located in an orthogonal projection of the open groove area 32 in the display area 11, and an orthogonal projection of the overlapping area 18 in the display area 11 is located in an orthogonal projection of the open groove area 32 in the display area 11.
In the present embodiment, as shown in fig. 3, the grooved region 32 extends from one side of the planarization layer 15 to the other side of the planarization layer 15 as a whole in the second direction X, which intersects with and is perpendicular to the first direction Y. The grooved region 32 may surround the overlap region 18 from at least two sides. For example, the slotted region 32 may surround the overlap region 18 from three sides. Of course, in other embodiments, the grooved region 32 may have a straight stripe shape, i.e., the projection on the first inorganic layer 41 may be a rectangle.
In this embodiment, as shown in fig. 4, the display panel further includes a driving circuit layer, a planarization layer 15 and a touch layer.
In the present embodiment, the driving circuit layer includes pixel circuits, and the pixel circuits are located in the display region 11. The pixel circuit may be, for example, a 2T1C pixel circuit, a 3T1C pixel circuit, a 4T1C pixel circuit, a 7T1C pixel circuit, or an 8T1C pixel circuit, but is not limited thereto. The pixel circuit comprises a transistor and a capacitor. Each transistor includes a gate electrode, a source electrode, a drain electrode, and a plurality of inorganic layers. The inorganic layers are insulating layers. The capacitor includes a first electrode, a second electrode and a first inorganic layer 41, the first inorganic layer 41 is located between the first electrode and the second electrode, the first inorganic layer 41 is an insulating layer, and the first inorganic layer 41 is located in the display region 11, the trace region 31, the lap joint region 18 and the groove region 32. Of course, the first inorganic layer 41 may be one of a plurality of inorganic layers in a transistor. The material of the first inorganic layer 41 may be silicon oxide or silicon nitride.
In the present embodiment, the driving circuit layer includes a first metal layer (not shown). The first metal layer may be a metal layer on which any one of the first electrode, the second electrode, the gate, the source, and the drain is located. The first metal layer is located in the display region 11, the bonding region 18 and the bending region 12. The first metal layer may be used to electrically connect circuits located in the display area with a chip located on the back side of the display panel. For example, the first metal layer may be used to connect the pixel circuit with a driving chip located on the back surface of the display panel, and may also be used to connect the touch electrode with a touch chip located on the back surface of the display panel.
In this embodiment, as shown in fig. 4, the touch layer includes a second metal layer (not shown), a third metal layer (not shown), and a second inorganic layer 42, and the second inorganic layer 42 is located between the second metal layer and the third metal layer. The second metal layer includes a first touch electrode, the third metal layer includes a second touch electrode, and one of the second metal layer and the third metal layer includes a touch line 17. The first touch electrode and the second touch electrode are located in the display area 11, the touch line 17 is at least located in the trace area 31 and the bonding area 18, and a portion of the touch line 17 may be located in the display area 11. At least one of the first touch electrode and the second touch electrode is electrically connected to the touch line 17. For example, the first touch electrode is electrically connected to the touch line 17, the second touch electrode is electrically connected to the touch line 17, or the first touch electrode and the second touch electrode are respectively electrically connected to the touch line 17. The touch lines 17 are connected to the first metal layer in the bonding region 18 through the metal vias 33, and are connected to the touch chip on the back of the display panel through the first metal layer. The second inorganic layer 42 extends from the display area 11 to the grooved area 32, and is located in the display area 11, the trace area 31, the lap area 18, and the grooved area 32. The material of the second inorganic layer 42 may be silicon oxide or silicon nitride.
As shown in fig. 4, the planarization layer 15 is disposed on the first inorganic layer 41, the planarization layer 15 is disposed on the display region 11, the trace region 31, the landing region 18 and the grooved region 32, the planarization layer 15 includes a groove 151, and the groove 151 is disposed in the grooved region 32. The groove 151 may surround the overlap region 18 from at least two sides. For example, the groove 151 may surround the overlap region 18 from three sides. Of course, in other embodiments, the groove 151 may have a straight stripe shape, i.e., the projection on the first inorganic layer 41 may have a rectangular shape.
As shown in fig. 4, the second inorganic layer 42 is located on a side of the planarization layer 15 remote from the first inorganic layer 41. In the groove 151, the second inorganic layer 42 is in contact with the first inorganic layer 41. Since the second inorganic layer 42 and the first inorganic layer 41 are both inorganic layers, the contact area therebetween is dense.
In this embodiment, the boundary of the second inorganic layer 42 close to the bending region 12 is located between the groove 151 and the bending region 12, and since the second inorganic layer 42 contacts the first inorganic layer 41 in the groove 151, the contact portion between the two layers is dense, even if the boundary of the second inorganic layer 42 close to the bending region 12 is peeled, the peeling can be prevented from extending to the routing region 31 and the overlapping region 18, and the peeling can be prevented from occurring at the boundary of the second inorganic layer 42 close to the bending region 12, so that the bad influence on the routing between the display region 11 and the bending region 12 can be avoided, and the yield of the display panel can be improved.
In addition, it should be noted that the flexible film layer 110 is located in the bending region 12. The material of the flexible film layer 110 may be an organic material, and the material of the flexible film layer 110 may be the same as that of the pixel defining layer, or the same as that of the planarization layer 15.
The embodiment of the invention also provides a display panel. As shown in fig. 5 to fig. 6, different from the above embodiments, in the present embodiment, the second inorganic layer 42 is located in the display region 11, the trace region 31, the lap region 18 and the partial groove region 32, that is, the boundary of the second inorganic layer 42 close to the side of the bending region 12 is located in the groove 151.
In this embodiment, since the boundary of the second inorganic layer 42 close to the bending region 12 is located in the groove 151, the second inorganic layer 42 contacts with the first inorganic layer 41 in the groove 151, and since the second inorganic layer 42 and the first inorganic layer 41 are both inorganic layers, the contact density between the two is good, and the peeling of the boundary of the second inorganic layer 42 close to the bending region 12 can be avoided, thereby avoiding the adverse effect on the wires between the display region 11 and the bending region 12, and improving the yield of the display panel.
The embodiment of the invention also provides a display panel. As shown in fig. 7, unlike the above embodiments, in the present embodiment, the number of the routing areas 31 is two, the number of the overlapping areas 18 is two, the number of the grooved areas 32 is two, and the number of the grooves 151 is two.
For each of the slotted regions 32, there is a trace region 31 whose orthographic projection on the display region 11 is within the orthographic projection of the slotted region 32 on the display region 11, and there is a lap region 18 whose orthographic projection on the display region 11 is within the orthographic projection of the slotted region 32 on the display region 11. A space may exist between the two slotted regions 32. Of course, the two grooved regions 32 may be continuous.
In the present embodiment, there is one groove 151 per grooved region 32. The two grooves 151 can communicate with each other.
In the present embodiment, the length of the display panel in the second direction X is 70 mm, and the length of each of the grooved regions 32 is 10 mm, but is not limited thereto.
In the present embodiment, in each groove 151, the second inorganic layer 42 is in contact with the first inorganic layer 41. Since the second inorganic layer 42 and the first inorganic layer 41 are both inorganic layers, the contact area therebetween is dense.
In this embodiment, the boundary of the second inorganic layer 42 close to the bending region 12 is located between the groove 151 and the bending region 12, and since the second inorganic layer 42 contacts the first inorganic layer 41 in the groove 151, the contact portion between the two is dense, even if the boundary of the second inorganic layer 42 close to the bending region 12 is peeled, the peeling can be prevented from extending to the trace region 31 and the lap joint region 18, and the peeling can be prevented from occurring to the boundary of the second inorganic layer 42 close to the bending region 12, therefore, the adverse effect on the traces between the display region 11 and the bending region 12 can be avoided, and the yield of the display panel can be improved.
The embodiment of the invention also provides a preparation method of the display panel, which is used for preparing the display panel in any embodiment. The method for manufacturing the display panel, as shown in fig. 8, may include the following steps 801 to 803:
in step 801, a driving circuit layer is formed, the driving circuit layer including a first inorganic layer 41; the first inorganic layer 41 is at least located in the trace region 31, the lap region 18 and the grooved region 32.
In step 802, a planarization layer 15 is formed, wherein the planarization layer 15 is disposed on the first inorganic layer 41 and at least located in the routing region 31, the bonding region 18 and the trench region 32, the planarization layer 15 includes a groove 151, and the groove 151 is located in the trench region 32.
In this embodiment, the method of forming the planarization layer 15 includes: an organic layer is formed on the first inorganic layer 41 and at least located in the trace region 31, the lap region 18 and the groove region 32. The surface of the organic layer remote from the first inorganic layer 41 is planar. For example, the organic layer may be located in the display region 11, the trace region 31, the lap region 18 and the grooved region 32. Then, the organic layer is patterned using a mask, thereby obtaining the planarization layer 15.
In step 803, a touch layer is formed, where the touch layer includes a second inorganic layer 42, the second inorganic layer 42 is located on a side of the planarization layer 15 away from the first inorganic layer 41, the second inorganic layer 42 extends from the trace area 31 to the groove area 32, and is located in the trace area 31, the lap area 18 and at least a portion of the groove area 32, and the second inorganic layer 42 contacts the first inorganic layer 41 in the groove 151.
In this embodiment, since the planarization layer 15 includes the groove 151, the groove 151 is located in the groove area 32, the groove area 32 is located on one side of the trace area 31 and the overlapping area 18 close to the bending area 12, the second inorganic layer 42 in the touch layer is located on one side of the planarization layer 15 away from the first inorganic layer 41, the trace area 31 extends toward the groove area 32, the second inorganic layer 42 is located in the trace area 31, the overlapping area 18 and at least a part of the groove area 32, and in the groove area 32, the second inorganic layer 42 contacts with the first inorganic layer 41, and since the second inorganic layer 42 and the first inorganic layer 41 are both inorganic layers, the contact density between the two layers is good. When the boundary of the second inorganic layer 42 close to the bending region 12 is located between the groove 151 and the bending region 12, even if the boundary of the second inorganic layer 42 close to the bending region 12 is peeled off, the peeling can be prevented from extending to the routing region 31 and the overlapping region 18, and when the boundary of the second inorganic layer 42 close to the bending region 12 is located in the groove 151, the peeling can be prevented from occurring on the boundary of the second inorganic layer 42 close to the bending region 12, so that the bad influence on the routing between the display region 11 and the bending region 12 can be avoided, and the yield of the display panel can be improved.
It should be noted that the display panel provided in the embodiment of the present invention can be applied to the following display devices: any product or component with a display function, such as electronic paper, a mobile phone, a tablet computer, a television, a notebook computer, a digital photo frame, a navigator and the like.
The forming process adopted by the above process may include, for example: deposition, sputtering and other film forming processes and etching and other patterning processes.
It is noted that in the drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. Also, it will be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or layer or intervening layers may also be present. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or intervening layers or elements may also be present. In addition, it will also be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer between the two layers or elements, or more than one intermediate layer or element may also be present. Like reference numerals refer to like elements throughout.
In the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless explicitly defined otherwise.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (10)
1. A display panel, comprising a display area and a peripheral area, wherein the peripheral area is adjacent to the display area; the peripheral area comprises a wiring area, a lap joint area, a slotting area and a bending area; in a first direction, the display area, the routing area, the lap joint area, the slotting area and the bending area are sequentially arranged; the orthographic projection of the wiring area on the display area is positioned in the orthographic projection of the slotted area on the display area, and the orthographic projection of the lap joint area on the display area is positioned in the orthographic projection of the slotted area on the display area;
the display panel further includes: the touch control panel comprises a driving circuit layer, a planarization layer and a touch control layer; the driving circuit layer comprises a first inorganic layer, and the touch layer comprises a second inorganic layer;
the first inorganic layer is at least positioned in the wiring area, the lap joint area and the slotting area; the planarization layer is positioned on the first inorganic layer and at least positioned in the routing area, the lap joint area and the slotting area, the planarization layer comprises a groove, and the groove is positioned in the slotting area; the second inorganic layer is located on one side, far away from the first inorganic layer, of the planarization layer, extends from the wiring area to the grooving area, is located in the wiring area, the lap joint area and at least part of the grooving area, and is in contact with the first inorganic layer in the groove.
2. The display panel of claim 1, wherein the grooved region extends from one side of the planarization layer to the other side of the planarization layer in a second direction, the second direction intersecting the first direction.
3. The display panel of claim 2 wherein a projection of the grooved region on the first inorganic layer is rectangular.
4. The display panel of claim 2, wherein the slotted region surrounds the overlap region from at least two sides.
5. The display panel of claim 4, wherein the notched area surrounds the overlap area from three sides.
6. The display panel according to claim 1, wherein the number of the trace areas is two, the number of the lap areas is two, the number of the groove areas is two, and the number of the grooves is two;
for each slotted region, the orthographic projection of the slotted region in the display region is positioned in the orthographic projection of the slotted region in the display region, and the lapping region of the orthographic projection of the slotted region in the orthographic projection of the display region is positioned in the orthographic projection of the slotted region in the display region;
a space exists between the two slotted regions; there is one said groove per each said grooved region.
7. The display panel of claim 1, wherein the touch layer comprises a touch line, a second metal layer and a third metal layer;
the touch line is at least positioned in the wiring area and the lap joint area; the driving circuit layer comprises a first metal layer, the first metal layer is at least positioned in the lap joint area and the bending area, and the touch control line is lapped to the first metal layer in the lap joint area;
the second inorganic layer is located between the second metal layer and the third metal layer, the second metal layer comprises a first touch electrode, the third metal layer comprises a second touch electrode, and the touch line is located in one of the second metal layer and the third metal layer.
8. The display panel according to claim 1, wherein the driving circuit layer includes a pixel circuit, the pixel circuit is located in the display region, the pixel circuit includes a capacitor, the capacitor includes a first electrode and a second electrode, the first inorganic layer is also located in the display region, and the first inorganic layer is located between the first electrode and the second electrode.
9. The preparation method of the display panel is characterized in that the display panel comprises a display area and a peripheral area, wherein the peripheral area is adjacent to the display area; the peripheral area comprises a wiring area, a lap joint area, a slotting area and a bending area; in a first direction, the display area, the routing area, the lap joint area, the slotting area and the bending area are sequentially arranged; the orthographic projection of the wiring area on the display area is positioned in the orthographic projection of the slotted area on the display area, and the orthographic projection of the lap joint area on the display area is positioned in the orthographic projection of the slotted area on the display area; the method comprises the following steps:
forming a driving circuit layer including a first inorganic layer; the first inorganic layer is at least positioned in the wiring area, the lap joint area and the slotting area;
forming a planarization layer, wherein the planarization layer is located on the first inorganic layer and at least located in the routing area, the lap joint area and the groove area, the planarization layer comprises a groove, and the groove is located in the groove area;
forming a touch layer, wherein the touch layer comprises a second inorganic layer, the second inorganic layer is positioned on one side of the planarization layer, which is far away from the first inorganic layer, the second inorganic layer extends from the wiring area to the slotting area, and is positioned in the wiring area, the lap-joint area and at least part of the slotting area, and in the groove, the second inorganic layer is in contact with the first inorganic layer.
10. The method for manufacturing a display panel according to claim 9, wherein the forming a planarization layer includes:
forming an organic layer, wherein the organic layer is positioned on the first inorganic layer and is at least positioned in the wiring area, the lap joint area and the slotting area; the surface of the organic layer far away from the first inorganic layer is a plane;
and patterning the organic layer by using a mask to obtain the planarization layer.
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