CN109164939B - Display panel, display device and manufacturing method of display panel - Google Patents
Display panel, display device and manufacturing method of display panel Download PDFInfo
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- CN109164939B CN109164939B CN201811094912.4A CN201811094912A CN109164939B CN 109164939 B CN109164939 B CN 109164939B CN 201811094912 A CN201811094912 A CN 201811094912A CN 109164939 B CN109164939 B CN 109164939B
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- touch lead
- display panel
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
Abstract
The invention discloses a display panel, a display device and a manufacturing method of the display panel, which belong to the technical field of display and comprise the following steps: a substrate; the touch screen comprises a plurality of gate lines, a plurality of data lines, a plurality of first touch leads and a plurality of second touch leads, wherein the first touch leads and the data lines are arranged on the same layer, and the second touch leads are positioned on one side of the gate lines close to the substrate; the same touch electrode is electrically connected with the first touch lead and the second touch lead. By arranging the second touch lead on one side of the gate line close to the substrate, the display panel provided by the invention can enhance the coverage of the second touch lead, improve the protection capability of the second touch lead, avoid the problem of failure of the touch lead, improve the reliability of touch signal transmission and improve the touch performance of the display panel.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a display device and a manufacturing method of the display panel.
Background
In the display panel provided by the prior art, in the fan-out area of the display panel, the thickness of the insulating layer covering the touch lead layer is small, so that the coverage of the touch lead layer is deteriorated, and the protection of the touch lead layer is deteriorated; and the segment difference of the touch lead layer is larger, so that the touch lead of the fan-out area has failure problem, and the reliability of touch signal transmission is reduced.
Disclosure of Invention
In view of the foregoing, the present invention provides a display panel including an array substrate, the array substrate including: a substrate; the gate lines are positioned on one side of the substrate and extend along the row direction, and the data lines are positioned on one side of the gate lines, which is far away from the substrate, and extend along the column direction; the common electrode is positioned on one side of the data line, which is far away from the substrate, and the common electrode is reused as a touch electrode; the first touch lead and the data line are arranged on the same layer, and the second touch lead is positioned on one side of the gate line close to the substrate; the same touch electrode is electrically connected with the first touch lead and the second touch lead.
The invention also provides a display device comprising the display panel provided by the invention.
The invention also provides a manufacturing method of the display panel, which comprises the following steps: providing a substrate; forming a second touch lead material layer on the substrate; patterning the second touch lead material layer to form a plurality of second touch leads; forming a plurality of thin film transistors and a plurality of first touch leads on a substrate, including: forming a gate material layer; patterning the grid material layer to form a plurality of grids; forming a source electrode material layer and a drain electrode material layer; patterning the source electrode material layer and the drain electrode material layer to form a plurality of source electrodes, a plurality of drain electrodes and a plurality of first touch control lead wires; forming a plurality of pixel electrodes on a substrate; a common electrode is formed on the substrate.
Compared with the prior art, the display panel, the display device and the manufacturing method of the display panel provided by the invention at least realize the following beneficial effects:
in the embodiment of the invention, the pixel electrode and the common electrode are arranged on one side of the second touch lead away from the substrate, and the second touch lead has no influence on the pixel storage capacitor, so that the thickness of the second touch lead can be increased in order to ensure the touch performance of the display panel; even if the thickness of the second touch lead is larger, the second touch lead has larger section difference, and the second touch lead is covered with a plurality of film layers, so that the problem of micro-holes can not occur. Therefore, the display panel provided by the embodiment of the invention can enhance the coverage of the second touch lead, improve the protection capability of the second touch lead, avoid the failure problem of the touch lead, improve the reliability of touch signal transmission and improve the touch performance of the display panel.
Of course, it is not necessary for any product in which the present invention is practiced to 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 cross-sectional view of a display panel provided in the prior art;
fig. 2 is a schematic plan view of a display panel according to an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of the display panel provided in FIG. 2 in a region M;
FIG. 4 is a cross-sectional view of the enlarged schematic view provided in FIG. 3 along section line QQ';
FIG. 5 is a cross-sectional view of the enlarged schematic view provided in FIG. 3 along section line OO';
FIG. 6 is a cross-sectional view of the enlarged schematic view provided in FIG. 3 along section line SS';
FIG. 7 is a cross-sectional view of the display panel shown in FIG. 2 along the cross-sectional line PP';
FIG. 8 is a schematic diagram of a planar structure of another display panel according to an embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view of the display panel provided in FIG. 8 in a fan-out area F;
FIG. 10 is a cross-sectional view of the display panel shown in FIG. 8 along the NN;
FIG. 11 is a cross-sectional view of the enlarged schematic view provided in FIG. 3 along section line DD';
fig. 12 is a schematic plan view of a display device according to an embodiment of the present invention;
fig. 13 is a flowchart of a method for manufacturing a display panel 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.
Referring to fig. 1, fig. 1 is a schematic cross-sectional structure diagram of a display panel provided in the prior art. As shown in fig. 1, the fan-out region of the display panel includes a substrate 01, a gate metal layer 02, and a source-drain metal layer 03 touch lead layer 04, the gate metal layer 02, the source-drain metal layer 03, and the touch lead layer 04 are insulated from each other, and an insulating layer 05 covers the touch lead layer 04. The source/drain metal layer 03 includes a source 031, a drain 032, and an active layer 033. In order to ensure the touch performance of the display panel, it is necessary that the resistance of the touch lead layer 04 is as small as possible, so the thickness of the touch lead layer 04 itself is larger than that of other metal film layers, and in consideration of the pixel storage capacitance on the display panel (the capacitance C ═ S/d, and the smaller the distance d is, the larger the capacitance is), the thickness of the insulating layer 05 covering the touch lead layer 04 is not preferably too large, and the smaller the thickness of the insulating layer 05 causes the coverage of the touch lead layer to be poor, thereby causing the touch lead to be poor in protection in the fan-out area, and possibly causing the touch lead to be scratched. In addition, the thickness of the touch lead layer 04 itself is larger, so that the step difference caused by the touch lead layer 04 is larger, and the covered insulating layer 05 is thinner, so that the insulating layer 05 is prone to form micro-holes at the step (circled by the dotted line in the figure) of the touch lead layer 04, which may cause the touch lead to fail and reduce the reliability of touch signal transmission.
In view of the above, please refer to fig. 2-4, fig. 2 is a schematic plan view of a display panel according to an embodiment of the present invention, fig. 3 is an enlarged schematic view of the display panel in the region M shown in fig. 2, and fig. 4 is a schematic cross-sectional view of the enlarged schematic view shown in fig. 3 along the section line QQ'. As shown in fig. 2 to 4, the present invention provides a display panel, including an array substrate 100, where the array substrate 100 includes: a substrate 1; the display device comprises a plurality of gate lines 2 and a plurality of data lines 3, wherein the gate lines 2 are positioned on one side of a substrate 1, the gate lines 2 extend along a row direction X, the data lines 3 are positioned on one side of the gate lines 2, which is far away from the substrate 1, and the data lines 3 extend along a column direction Y; the common electrode 4 is positioned on one side of the data line 3, which is far away from the substrate 1, and the common electrode 4 is reused as a touch electrode 5; the touch screen comprises a plurality of first touch lead wires 51 and a plurality of second touch lead wires 52, wherein the first touch lead wires 51 and the data lines 3 are arranged on the same layer, and the second touch lead wires 52 are positioned on one side of the gate lines 2 close to the substrate 1; the same touch electrode 5 is electrically connected to the first touch lead 51 and the second touch lead 52. It should be noted that, in order to clearly illustrate the solution of the present invention, the first touch lead 51 and the second touch lead 52 are drawn separately in fig. 2, and in an actual manufacturing process, the first touch lead 51 and the second touch lead 52 in fig. 2 are overlapped along a direction perpendicular to the display panel, so as to save the occupied space of the display panel. Specifically, as shown in fig. 2-4, the touch electrode 5 on the display panel is electrically connected to both the first touch lead 51 and the second touch lead 52, and the second touch lead 52 is located on one side of the gate line 2 close to the substrate 1, that is, the second touch lead 52 is covered with a plurality of film layers.
In this embodiment, since the pixel electrode and the common electrode are on the side of the second touch lead away from the substrate, and the second touch lead has no influence on the pixel storage capacitor, the thickness of the second touch lead itself can be increased to ensure the touch performance of the display panel; even if the thickness of the second touch lead is larger, the second touch lead has larger section difference, and the second touch lead is covered with a plurality of film layers, so that the problem of micro-holes can not occur. Therefore, the display panel provided by the embodiment can enhance the coverage of the second touch lead, improve the protection capability of the second touch lead, avoid the failure problem of the touch lead, improve the reliability of touch signal transmission, and improve the touch performance of the display panel.
Optionally, please refer to fig. 2-3 and fig. 5, fig. 5 is a schematic cross-sectional view of the enlarged schematic view provided in fig. 3 along the section line OO'. The display panel includes a display area a including a plurality of pixel electrodes 6 and a plurality of thin film transistors TFT.
Optionally, referring to fig. 2-4 and fig. 6, fig. 6 is a schematic cross-sectional view along the section line SS' of the enlarged schematic view provided in fig. 3. As shown in fig. 2-4 and 6, a first insulating layer 9 is disposed between the second touch lead 52 and the gate line 2, a second insulating layer 10 is disposed between the gate lines 2 and the data lines 3, and a third insulating layer 11 is disposed between the data lines 3 and the common electrode 4; the third insulating layer 11 is provided with a first via hole K1 and a second via hole K2, the first via hole K1 penetrates through the third insulating layer 11, and the second via hole K2 penetrates through the third insulating layer 11, the second insulating layer 10 and the first insulating layer 9 in sequence; the first touch lead 51 includes a first end D1 and a second end D2, the second touch lead 52 includes a third end D3 and a fourth end D4, the same touch electrode 5 is electrically connected to the first end D1 of the first touch lead 51 through the first via hole K1 and is electrically connected to the third end D3 of the second touch lead 52 through the second via hole K2, and the second end D2 of the first touch lead 51 is electrically connected to the fourth end D4 of the second touch lead 52. It should be understood that the first end D1 and the second end D2 are not specific to the starting point of the first touch lead 51 in this embodiment, and the third end D3 and the fourth end D4 are not specific to the starting point of the second touch lead 52, and the first end, the second end, the third end and the fourth end are only used to illustrate the connection relationship among the first touch lead, the second touch lead and the common electrode in this embodiment. As shown in fig. 2, the lengths of the first touch lead 51 and the second touch lead may be equal, and the common electrode 4 is electrically connected to the first touch lead 51 through the first via K1 and electrically connected to the second touch lead 52 through the second via K2.
Specifically, as shown in fig. 2-4 and fig. 6, each touch electrode 5 on the display panel is electrically connected to one end of the first touch lead 51 through the first via K1, and is electrically connected to one end of the second touch lead 52 through the second via K2, and the other end of the first touch lead 51 is electrically connected to the other end of the second touch lead 52, that is, the first touch lead 51 and the second touch lead 52 are connected in parallel.
In this embodiment, the second touch lead is disposed on a side of the gate line close to the substrate, the touch electrode is electrically connected to one end of the two touch leads through the two via holes, and the remaining ends of the two touch leads are connected to each other, so that the two touch leads are connected in parallel, coverage of the second touch lead is enhanced, protection capability of the second touch lead is improved, and when the problem of failure of the touch leads is avoided, the two touch leads transmit touch signals simultaneously, which not only can further improve reliability of transmission of the touch signals, but also can improve speed of transmission of the touch signals, and improve touch performance of the display panel.
Optionally, please refer to fig. 2 and fig. 7, fig. 7 is a schematic cross-sectional structure of the display panel provided in fig. 2 along a section line PP'. As shown in fig. 2 and 7, the display panel includes a display area a and a non-display area B, the non-display area B is disposed around the display area a, the non-display area B includes a fan-out area F and a bonding area C, the bonding area C includes a plurality of pads 7, the first touch lead 51 is directly connected to the pad 7 through the fan-out area F, or the second touch lead 52 is directly connected to the pad 7 through the fan-out area F (not shown in the figure); the display panel further comprises a first connecting part 81, the first connecting part 81 and the common electrode 4 are arranged on the same layer, and the first connecting part 81 is positioned on one side of the display area A close to the fan-out area F; the second end D2 of the first touch lead 51 and the fourth end D4 of the second touch lead 52 are electrically connected by the first connection portion 81. It is understood that the present embodiment is only schematically illustrated by taking the shape of the first connection portion 81 in fig. 2 as a rectangle, and the present invention does not specifically limit the specific shape of the first connection portion.
In this embodiment, the first touch lead or the second touch lead is directly connected to the pad, and the first touch lead and the second touch lead are connected in parallel, so that the reliability of touch signal transmission can be significantly improved, the speed of touch signal transmission can be increased, and the touch performance of the display panel can be improved.
Optionally, with continuing reference to fig. 2-3, the display panel further includes a plurality of pixel electrodes 6, where an orthogonal projection of the first via K1 on the substrate 1 is a first via projection K1 ', an orthogonal projection of the second via K2 on the substrate 1 is a second via projection K2', an orthogonal projection of the gate line 2 on the substrate 1 is a gate line projection 2 ', an orthogonal projection of the pixel electrode 6 on the substrate 1 is a pixel electrode projection 6', the first via projection K1 'is located between the gate line projection 2' and the pixel electrode projection 6 ', and the second via projection K2' is located between the gate line projection 2 'and the pixel electrode projection 6'.
It should be understood that fig. 2 only schematically illustrates that all of the first touch leads 51 are directly connected to the pads 7 through the fan-out area F, and all of the second touch leads 52 are directly connected to the pads 7 through the fan-out area F, or a part of the first touch leads 51 is directly connected to the pads 7 through the fan-out area F, and a part of the second touch leads 52 is directly connected to the pads 7 through the fan-out area F, which is not particularly limited in this embodiment of the present invention.
Specifically, in this embodiment, the first via hole K1, the second via hole K2 and the thin film transistor TFT are arranged along the row direction, the first via hole K1 or the second via hole K2 is disposed in the gap between the pixel electrode 6, the gate line 2 and the first touch lead 51/the second touch lead 52, so that the space utilization rate of the display panel can be fully utilized, and the first connection portion connects the first touch lead and the second touch lead together, so as to implement parallel connection of the first touch lead and the second touch lead, further improve the reliability of touch signal transmission, and improve the touch performance of the display panel.
Optionally, referring to fig. 4 or fig. 6, the first touch lead 51 and the second touch lead 52 are overlapped along a direction perpendicular to the display panel.
In this embodiment, the first touch lead and the second touch lead are overlapped, so that the space occupied by the touch leads can be reduced, the display space of the display panel is increased, and the display effect of the display panel is improved.
Optionally, please refer to fig. 8-9, fig. 8 is a schematic plan view of another display panel according to an embodiment of the present invention, and fig. 9 is a schematic cross-sectional view of the display panel provided in fig. 8 in a fan-out area F. As shown in fig. 8 to 9, the display panel includes a display area a and a non-display area B, the non-display area B being disposed around the display area a, the non-display area B including a fan-out area F and a bonding area C, the bonding area C including a plurality of pads 7; the first touch leads 51 are located in the display area a, the second touch leads 52 are located in the non-display area B, and the second touch leads 52 are electrically connected to the pads 7 through the fan-out area F. The second touch lead 52 is located on one side of the gate line 2 close to the substrate 1. It should be noted that, in order to clearly illustrate the solution of the present invention, the first touch lead 51 and the second touch lead 52 are drawn separately in fig. 8, and in an actual manufacturing process, the first touch lead 51 and the second touch lead 52 in fig. 2 are overlapped along a direction perpendicular to the display panel, so as to save the occupied space of the display panel.
In this embodiment, the touch electrode is electrically connected to the first touch lead in the display area, the touch lead is electrically connected to the second touch lead through the second connecting portion, the second touch lead is directly electrically connected to the pad through the fan-out area, and the second touch lead is located on one side of the gate line close to the substrate, so that the coverage of the second touch lead can be enhanced, the protection capability of the second touch lead is improved, the problem of failure of the touch lead is avoided, the reliability of touch signal transmission is improved, and the touch performance of the display panel is improved.
Optionally, please refer to fig. 8 and 10, fig. 10 is a schematic cross-sectional structure view of the display panel provided in fig. 8 along a section line NN'. As shown in fig. 8 and 10, the display panel further includes a second connection portion 82, the second connection portion 82 is disposed in the same layer as the common electrode 4, and the second connection portion 82 is located on a side of the display area a close to the fan-out area F; a first insulating layer 9 is arranged between the second touch lead 52 and the gate lines 2, a second insulating layer 10 is arranged between the gate lines 2 and the data lines 3, and a third insulating layer 11 is arranged between the data lines 3 and the common electrode 4; the third insulating layer 11 is provided with a third via hole K3 and a fourth via hole K4, the third via hole K3 penetrates through the third insulating layer 11, the fourth via hole K4 penetrates through the third insulating layer 11, the second insulating layer 10 and the first insulating layer 9, the second connection portion 82 is electrically connected to the first touch lead 51 through the third via hole K3, and the second connection portion 82 is electrically connected to the second touch lead 52 through the fourth via hole K4. Optionally, in the display area a, the touch electrode 5 is electrically connected to the first touch lead 51 through the first via K1. It is to be understood that the present embodiment is only schematically illustrated by taking the shape of the second connection portion 81 in fig. 8 as a rectangle, and the present invention does not specifically limit the specific shape of the second connection portion.
In this embodiment, the touch electrode is electrically connected to the first touch lead in the display area, the touch lead is electrically connected to the second touch lead through the second connecting portion, the second touch lead is directly electrically connected to the pad through the fan-out area, and the second touch lead is located on one side of the gate line close to the substrate, so that the coverage of the second touch lead can be enhanced, the protection capability of the second touch lead is improved, the problem of failure of the touch lead is avoided, the reliability of touch signal transmission is improved, and the touch performance of the display panel is improved.
Optionally, referring to fig. 3 and fig. 11, fig. 11 is a cross-sectional structure view of the enlarged schematic view provided in fig. 3 along a section line DD'. As shown in fig. 3 and 11, the display panel further includes a plurality of thin film transistors TFT including a gate electrode G, a source electrode S, a drain electrode D, and an active layer AC, the gate electrode G of the thin film transistor TFT being electrically connected to the gate line 2, the source electrode S being electrically connected to the data line 3, and the drain electrode D covering a portion of a surface of the pixel electrode 6 on a side away from the substrate 1 to be electrically connected to the pixel electrode 6; the first insulating layer 9 is disposed between the second touch lead 52 and the gate line 2, and the pixel electrode 6 and the active layer AC are both located on a surface of the first insulating layer 9 on a side away from the substrate 1.
In this embodiment, the pixel electrode and the active layer are both located on the surface of the first insulating layer on the side away from the substrate, so that the thickness of the display panel can be reduced, and the display panel is light and thin.
The invention also provides a display device comprising the display panel provided by the invention. Specifically, referring to fig. 12, fig. 12 is a schematic plan view of a display device according to an embodiment of the present invention. Fig. 12 provides a display device 1000 including a display panel 1000A according to any of the above embodiments of the present invention. The embodiment of fig. 12 is only an example of a mobile phone, and the display device 1000 is described, it is to be understood that the display device provided in the embodiment of the present invention may be other display devices having a display function, such as a computer, a television, and a vehicle-mounted display device, and the present invention is not limited thereto. The display device provided in the embodiment of the present invention has the beneficial effects of the display panel provided in the embodiment of the present invention, and specific reference may be made to the specific description of the display panel in each of the above embodiments, which is not repeated herein.
Referring to fig. 4 and 13, fig. 13 is a flowchart of a method for manufacturing a display panel according to the present invention. As shown in fig. 13, the present invention further provides a method for manufacturing a display panel, including:
s1: providing a substrate 1;
s2: forming a second touch lead material layer on the substrate 1;
s3: patterning the second touch lead material layer to form a plurality of second touch leads 52;
s4: a plurality of thin film transistors TFT and a plurality of first touch leads 51 are formed on a substrate 1, including:
s41: forming a gate material layer;
s42: patterning the grid material layer to form a plurality of grids 2;
s43: forming a source electrode material layer and a drain electrode material layer;
s44: patterning the source and drain material layers to form a plurality of sources S, a plurality of drains D, and a plurality of first touch leads 51;
s5: forming a plurality of pixel electrodes 6 on a substrate 1;
s6: a common electrode 4 is formed on the substrate 1.
In this embodiment, since the pixel electrode and the common electrode are on the side of the second touch lead away from the substrate, and the second touch lead has no influence on the pixel storage capacitor, the thickness of the second touch lead itself can be increased to ensure the touch performance of the display panel; even if the thickness of the second touch lead is larger, the second touch lead has larger section difference, and the second touch lead is covered with a plurality of film layers, so that the problem of micro-holes can not occur. Therefore, the display panel provided by the embodiment can enhance the coverage of the second touch lead, improve the protection capability of the second touch lead, avoid the failure problem of the touch lead, improve the reliability of touch signal transmission, and improve the touch performance of the display panel.
As can be seen from the above embodiments, the display panel, the display device, and the method for manufacturing the display panel provided by the present invention at least achieve the following beneficial effects:
in the embodiment of the invention, the pixel electrode and the common electrode are arranged on one side of the second touch lead away from the substrate, and the second touch lead has no influence on the pixel storage capacitor, so that the thickness of the second touch lead can be increased in order to ensure the touch performance of the display panel; even if the thickness of the second touch lead is larger, the second touch lead has larger section difference, and the second touch lead is covered with a plurality of film layers, so that the problem of micro-holes can not occur. Therefore, the display panel provided by the embodiment of the invention can enhance the coverage of the second touch lead, improve the protection capability of the second touch lead, avoid the failure problem of the touch lead, improve the reliability of touch signal transmission and improve the touch performance of the display panel.
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 (9)
1. A display panel, comprising an array substrate, the array substrate comprising:
a substrate;
the gate lines are positioned on one side of the substrate and extend along the row direction, and the data lines are positioned on one side of the gate lines, which is far away from the substrate, and extend along the column direction;
the common electrode is positioned on one side of the data line, which is far away from the substrate, and the common electrode is reused as a touch electrode;
the first touch lead and the data line are arranged on the same layer, and the second touch lead is positioned on one side of the gate line close to the substrate;
a first insulating layer is arranged between the second touch lead and the gate lines, a second insulating layer is arranged between the gate lines and the data lines, and a third insulating layer is arranged between the data lines and the common electrode; the third insulating layer is provided with a first via hole and a second via hole, the first via hole penetrates through the third insulating layer, and the second via hole penetrates through the third insulating layer, the second insulating layer and the first insulating layer in sequence;
the first touch lead comprises a first end and a second end, the second touch lead comprises a third end and a fourth end, the same touch electrode is electrically connected with the first end of the first touch lead through a first via hole and electrically connected with the third end of the second touch lead through a second via hole, and the second end of the first touch lead is electrically connected with the fourth end of the second touch lead.
2. The display panel according to claim 1,
the display panel comprises a display area and a non-display area, the non-display area is arranged around the display area and comprises a fan-out area and a binding area, the binding area comprises a plurality of bonding pads, the first touch lead is directly connected with the bonding pads through the fan-out area,
or the second touch lead is directly connected with the bonding pad through the fan-out area;
the display panel further comprises a first connecting part, the first connecting part and the common electrode are arranged on the same layer, and the first connecting part is positioned on one side, close to the fan-out area, of the display area;
the second end of the first touch lead is electrically connected with the fourth end of the second touch lead through the first connecting portion.
3. The display panel according to claim 1,
the display panel further comprises a plurality of pixel electrodes, wherein the orthographic projection of the first via hole on the substrate is a first via hole projection, the orthographic projection of the second via hole on the substrate is a second via hole projection, the orthographic projection of the gate line on the substrate is a gate line projection, and the orthographic projection of the pixel electrode on the substrate is a pixel electrode projection;
the first via projection is located between the gate line projection and the pixel electrode projection, and the second via projection is located between the gate line projection and the pixel electrode projection.
4. The display panel according to claim 1,
the first touch lead and the second touch lead overlap in a direction perpendicular to the display panel.
5. The display panel according to claim 1,
the display panel comprises a display area and a non-display area, the non-display area is arranged around the display area and comprises a fan-out area and a binding area, and the binding area comprises a plurality of welding pads;
the plurality of first touch leads are located in the display area, the plurality of second touch leads are located in the non-display area, and the plurality of second touch leads are electrically connected with the bonding pads through the fan-out area.
6. The display panel according to claim 5,
the display panel further comprises a second connecting part, the second connecting part and the common electrode are arranged on the same layer, and the second connecting part is located on one side, close to the fan-out area, of the display area;
a first insulating layer is arranged between the second touch lead and the gate lines, a second insulating layer is arranged between the gate lines and the data lines, and a third insulating layer is arranged between the data lines and the common electrode; the third insulating layer is provided with a third via hole and a fourth via hole, the third via hole penetrates through the third insulating layer, the fourth via hole penetrates through the third insulating layer, the second insulating layer and the first insulating layer, the second connecting portion passes through the third via hole and the first touch lead are electrically connected, and the second connecting portion passes through the fourth via hole and the second touch lead is electrically connected.
7. The display panel according to claim 1,
the display panel further comprises a plurality of thin film transistors and a plurality of pixel electrodes, wherein the thin film transistors comprise grid electrodes, source electrodes, drain electrodes and active layers, the grid electrodes of the thin film transistors are electrically connected with the grid lines, the source electrodes are electrically connected with the data lines, and the drain electrodes cover partial surfaces of the pixel electrodes on the side away from the substrate so as to be electrically connected with the pixel electrodes;
a first insulating layer is arranged between the second touch lead and the gate line, and the pixel electrode and the active layer are both positioned on the surface of one side, far away from the substrate, of the first insulating layer.
8. A display device characterized by comprising the display panel according to any one of claims 1 to 7.
9. A method for manufacturing a display panel is characterized by comprising the following steps:
providing a substrate;
forming a second touch lead material layer on the substrate;
patterning the second touch lead material layer to form a plurality of second touch leads, wherein each second touch lead comprises a third end and a fourth end;
forming a first insulating layer on the substrate;
forming a plurality of thin film transistors and a plurality of first touch leads on the substrate, the first touch leads including a first end and a second end, comprising:
forming a gate material layer;
patterning the grid material layer to form a plurality of grids;
forming a second insulating layer;
forming a source electrode material layer and a drain electrode material layer;
patterning the source electrode and drain electrode material layer to form a plurality of source electrodes, a plurality of drain electrodes and a plurality of first touch control lead wires;
forming a plurality of pixel electrodes on the substrate;
forming a third insulating layer, and forming a first via hole and a second via hole, wherein the first via hole penetrates through the third insulating layer, and the second via hole penetrates through the third insulating layer, the second insulating layer and the first insulating layer in sequence;
forming a common electrode on the substrate, wherein the common electrode is reused as a touch electrode; the same touch electrode is electrically connected with the first end of the first touch lead through a first via hole and is electrically connected with the third end of the second touch lead through a second via hole, and the second end of the first touch lead is electrically connected with the fourth end of the second touch lead.
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| CN109634467B (en) * | 2019-02-20 | 2022-05-20 | 京东方科技集团股份有限公司 | Array substrate and preparation method thereof |
| CN112540695A (en) * | 2019-09-23 | 2021-03-23 | 瀚宇彩晶股份有限公司 | Touch control display device |
| CN112631448A (en) * | 2019-10-08 | 2021-04-09 | 瀚宇彩晶股份有限公司 | Touch control display panel |
| CN113540124B (en) * | 2021-07-09 | 2023-06-20 | 厦门天马微电子有限公司 | Array substrate, display panel and display device |
| CN117677923A (en) * | 2022-06-30 | 2024-03-08 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN115729002A (en) * | 2022-08-31 | 2023-03-03 | 合肥京东方光电科技有限公司 | Array substrate, detection method thereof and display device |
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| CN104698665A (en) * | 2015-04-01 | 2015-06-10 | 上海天马微电子有限公司 | Touch display panel structure and forming method and touch display device thereof |
| CN105468202A (en) * | 2016-01-29 | 2016-04-06 | 上海中航光电子有限公司 | Array substrate, touch display panel and touch display device |
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| KR102384252B1 (en) * | 2015-08-31 | 2022-04-08 | 삼성디스플레이 주식회사 | Array substrate for touch sensor in-cell type display device and manufacturing method of the same |
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| CN104698665A (en) * | 2015-04-01 | 2015-06-10 | 上海天马微电子有限公司 | Touch display panel structure and forming method and touch display device thereof |
| CN105468202A (en) * | 2016-01-29 | 2016-04-06 | 上海中航光电子有限公司 | Array substrate, touch display panel and touch display device |
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