CN110867478B - Display panel, manufacturing method thereof and display device - Google Patents
Display panel, manufacturing method thereof and display device Download PDFInfo
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- CN110867478B CN110867478B CN201911204839.6A CN201911204839A CN110867478B CN 110867478 B CN110867478 B CN 110867478B CN 201911204839 A CN201911204839 A CN 201911204839A CN 110867478 B CN110867478 B CN 110867478B
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- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
Abstract
The embodiment of the invention provides a display panel, a manufacturing method thereof and a display device, relates to the technical field of display, and aims to effectively reduce the voltage drop of a reference voltage signal line and improve the display uniformity. The display panel includes: a display area and a non-display area surrounding the display area; pixel rows arranged in a first direction in the display area, each pixel row including a plurality of display pixels arranged in a second direction; a reference voltage signal line extending in a second direction; the repairing lines extend along the second direction, and comprise first repairing lines which are not electrically connected with the display pixels; the first lapping signal line comprises a first wiring section which is electrically connected with the first repairing line and the second lapping signal line respectively, and the second lapping signal line is electrically connected with the reference voltage signal line.
Description
[ technical field ] A method for producing a semiconductor device
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 of the invention ]
The display panel is provided with a plurality of display pixels, each display pixel comprises a pixel driving circuit and an organic light-emitting element, and a plurality of signal lines, such as reference voltage signal lines for resetting anodes of the organic light-emitting elements and gates of driving transistors in the pixel driving circuit, are arranged in the display panel for driving the organic light-emitting elements to emit light normally. However, as the size of the display panel is larger, the length of the reference voltage signal line is also longer, resulting in a larger load of the reference voltage signal line. Therefore, when the reference voltage signal is transmitted to the middle display area, a large voltage drop exists, so that the potential of the reference voltage signal in the middle display area is higher, the reference voltage signal does not completely reset the anode of the organic light emitting element and the gate of the driving transistor, and further, data signal writing is insufficient, and the phenomena that the middle display area is brighter during dark state display and the middle display area is darker during bright state display occur.
[ summary of the invention ]
In view of this, embodiments of the present invention provide a display panel, a manufacturing method thereof, and a display device, which effectively reduce a voltage drop of a reference voltage signal line and improve display uniformity.
In one aspect, an embodiment of the present invention provides a display panel, including:
a display area and a non-display area surrounding the display area;
pixel rows arranged in a first direction in the display area, each of the pixel rows including a plurality of display pixels arranged in a second direction, the first direction intersecting the second direction;
a reference voltage signal line extending in the second direction;
at least one group of repairing lines, wherein the repairing lines extend along the second direction, the repairing lines comprise first repairing lines, and the first repairing lines are not electrically connected with the display pixels;
the first lapping signal line comprises a first wiring section which is electrically connected with the first repairing line and the second lapping signal line respectively, and the second lapping signal line is electrically connected with the reference voltage signal line.
On the other hand, based on the same inventive concept, an embodiment of the present invention provides a method for manufacturing a display panel, including:
providing a substrate base plate, and forming on the substrate base plate: pixel rows arranged in a first direction in a display area, each of the pixel rows including a plurality of display pixels arranged in a second direction, the first direction intersecting the second direction; a reference voltage signal line extending in the second direction; at least one set of repair lines extending in the second direction; at least one set of overlapping wires extending along the first direction, the overlapping wires including a first overlapping signal wire and a second overlapping signal wire, the first overlapping signal wire being electrically connected with the repair wire and the second overlapping signal wire, respectively, the second overlapping signal wire being electrically connected with the reference voltage signal wire;
lighting the display panel, and detecting whether a first display pixel exists, wherein the first display pixel cannot emit light normally;
if the first display pixel exists, the repairing line comprises a first repairing line and a second repairing line, the first repairing line is not electrically connected with the display pixel, and the second repairing line is electrically connected with the first display pixel; performing laser cutting on the first lapping signal line to enable the first lapping signal line to comprise a first routing segment and a second routing segment, wherein the first routing segment is electrically connected with the first repairing line and the second lapping signal line respectively, the second routing segment is electrically connected with the second repairing line through a via hole, the second routing segment is electrically insulated from the second lapping signal line, and two end parts of the second routing segment are arranged in a suspended manner; if the first display pixel does not exist, the repairing line only comprises the first type of repairing line, the first lapping signal line is not subjected to laser cutting, and the first lapping signal line only comprises the first routing line segment.
In another aspect, based on the same inventive concept, an embodiment of the present invention provides a display device, including the display panel.
One of the above technical solutions has the following beneficial effects:
in the technical scheme provided by the embodiment of the invention, the first lapping signal line and the second lapping signal line are additionally arranged, on one hand, the first-class repairing line is electrically connected with the reference voltage signal line through the first routing segment of the first lapping signal line and the second lapping signal line, so that the reference voltage signal is transmitted on the first-class repairing line and the reference voltage signal line, and the parasitic capacitance formed between the reference voltage signal line and the first-class repairing line is reduced based on the principle of reducing the parasitic capacitance at the same potential; on the other hand, a grid structure is formed among the first wire segment, the second lapping signal line and the reference voltage signal line, so that the transmission path of the reference voltage signal is increased, namely, a plurality of parallel lines are added, and the resistance of the reference voltage signal line is reduced.
Therefore, by adopting the technical scheme provided by the embodiment of the invention, based on the connection relation among the first lapping signal line, the second lapping signal line, the first class of repairing lines and the reference voltage signal line, the load of the reference voltage signal line can be effectively reduced, so that the attenuation degree of the reference voltage signal when the reference voltage signal is transmitted to the middle display area is effectively reduced, the difference between the reference voltage signal in the middle display area and the reference voltage signal in other display areas is improved, the integral display uniformity of the display areas is further improved, and the display performance is optimized.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
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 of a display panel according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a repair line according to an embodiment of the present invention;
FIG. 6 is a flow chart of a manufacturing method according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
An embodiment of the present invention provides a display panel, as shown in fig. 1, fig. 1 is a schematic structural diagram of the display panel provided in the embodiment of the present invention, where the display panel includes: a display area 1 and a non-display area 2 surrounding the display area 1; pixel rows 3, the pixel rows 3 being arranged in a first direction in the display area 1, each pixel row 3 including a plurality of display pixels 4 arranged in a second direction, the first direction intersecting the second direction; a reference voltage signal line 5, the reference voltage signal line 5 extending along the second direction, the reference voltage signal line 5 being electrically connected to the display pixels 4 for providing a reference voltage signal to the display pixels 4; the repairing lines 6 extend along the second direction, the repairing lines 6 comprise first repairing lines 7, and the first repairing lines 7 are not electrically connected with the display pixels 4; the first lapping signal line 9 comprises a first routing section 11, the first routing section 11 is electrically connected with the first repairing line 7 and the second lapping signal line 10 respectively, and the second lapping signal line 10 is electrically connected with the reference voltage signal line 5.
First, after the display panel is manufactured, before the display panel is put into use, it is necessary to perform a lighting test on the display panel to test whether there are damaged display pixels 4 that cannot normally emit light in the display panel, so that dark spots appear in a displayed picture. If the display pixel 4 exists, the display pixel 4 is electrically connected with the corresponding repair line 6, the repair line 6 is used for repairing the display pixel 4 to enable the display pixel 4 to normally emit light so as to eliminate dark spots, at the moment, other repair lines 6 which do not need dark spot repair are first repair lines 7, the first repair lines 7 do not need to be electrically connected with the display pixel 4, and no signal is transmitted on the first repair lines 7.
In the display panel provided by the embodiment of the invention, by additionally arranging the first lapping signal line 9 and the second lapping signal line 10, on one hand, the first-class repairing line 7 is electrically connected with the reference voltage signal line 5 through the first routing segment 11 of the first lapping signal line 9 and the second lapping signal line 10, so that the reference voltage signals are transmitted on the first-class repairing line 7 and the reference voltage signal line 5, and the parasitic capacitance formed between the reference voltage signal line 5 and the first-class repairing line 7 is reduced based on the principle of reducing the parasitic capacitance at the same potential; on the other hand, a grid structure is formed among the first routing segment 11, the second lapping signal line 10 and the reference voltage signal line 5, so that the transmission path of the reference voltage signal is increased, namely, a plurality of parallel lines are added, and the resistance of the reference voltage signal line 5 is reduced.
Therefore, with the display panel provided by the embodiment of the present invention, based on the connection relationship among the first overlapping signal line 9, the second overlapping signal line 10, the first-type repair line 7, and the reference voltage signal line 5, the load of the reference voltage signal line 5 can be effectively reduced, so that the attenuation degree of the reference voltage signal transmitted to the middle display region is effectively reduced, the difference between the reference voltage signal in the middle display region and the reference voltage signal in other display regions is improved, the overall display uniformity of the display region 1 is improved, and the display performance is optimized.
In addition, it should be noted that, since the first repair line 7 is not electrically connected to the display pixel 4, the first repair line 7 is electrically connected to the reference voltage signal line 5, so that the reference voltage signal is transmitted on the first repair line 7, and the normal light emission of the display pixel 4 is not affected.
Optionally, referring to fig. 1 again, each pixel row 3 is correspondingly provided with a group of repair lines 6, so that when a lighting test is performed on the display panel, a greater number of display pixels 4 that cannot normally emit light in the pixel row 3 can be repaired as much as possible, and dark spots are eliminated to a greater extent. In addition, the number of the repair lines 6 is increased, and accordingly, the number of the first-class repair lines 7 and the number of the first routing segments 11 are increased, so that the number of parallel lines formed with the reference voltage signal line 5 is increased correspondingly, and the load of the reference voltage signal line 5 is reduced to a greater extent.
Optionally, as shown in fig. 2, fig. 2 is another schematic structural diagram of the display panel provided in the embodiment of the present invention, where the non-display area 2 includes a first non-display area 12 and a second non-display area 13 that are oppositely disposed, and the first non-display area 12 and the second non-display area 13 respectively extend along a first direction; the display panel includes two sets of overlapping wires 8, and the two sets of overlapping wires 8 are respectively located in the first non-display region 12 and the second non-display region 13. In the first non-display area 12, the first routing line segment 11 is electrically connected with the first type repair line 7 corresponding to the x-th pixel row 3, and the second lapping signal line 10 is electrically connected with one end of the reference voltage signal line 5; in the second non-display area 13, the first routing line segment 11 is electrically connected with the first type repair line 7 corresponding to the y-th pixel row 3, and the second lapping signal line 10 is electrically connected with the other end of the reference voltage signal line 5; x is 2n-1, y is 2n, and n is a positive integer greater than or equal to 1.
A group of overlapping wires 8 are respectively arranged in the first non-display area 12 and the second non-display area 13, the first routing segments 11 in the first non-display area 12 are electrically connected with the first-class repair lines 7 corresponding to odd-numbered pixel rows 3, and the first routing segments 11 in the second non-display area 13 are electrically connected with the first-class repair lines 7 corresponding to even-numbered pixel rows 3, so that the first-class repair lines 7 corresponding to all the pixel rows 3 can be ensured to be electrically connected with the reference voltage signal line 5, the reference voltage signal is transmitted on all the first-class repair lines 7, and the parasitic capacitance of the reference voltage signal line 5 is reduced to a greater extent. In addition, the first routing segment 11 and the second lapping signal line 10 are respectively arranged in the first non-display area 12 and the second non-display area 13, so that the number of formed parallel lines is increased, and the resistance of the reference voltage signal line 5 is further reduced.
Furthermore, two ends of each reference voltage signal line 5 are electrically connected to the second overlapping signal line 10, respectively, so as to ensure that the two ends of each reference voltage signal line 5 are formed with a parallel connection line of the first routing segment 11 and the second overlapping signal line 10, thereby realizing effective reduction of the load of each reference voltage signal line 5.
Optionally, as shown in fig. 3, fig. 3 is still another structural schematic diagram of the display panel provided in the embodiment of the present invention, in the first non-display area 12, the first routing segment 11 is further electrically connected to the first-type repair line 7 corresponding to the y-th pixel row 3, and in the second non-display area 13, the first routing segment 11 is further electrically connected to the first-type repair line 7 corresponding to the x-th pixel row 3. By adopting the arrangement mode, two ends of the first-class repairing wire 7 are electrically connected with the reference voltage signal wire 5 through the first routing segment 11 and the second lapping signal wire 10 of the first non-display area 12 and the second non-display area 13, and a parallel circuit is also formed between the first-class repairing wire 7 and the reference voltage signal wire 5, so that the load of the reference voltage signal wire 5 is reduced to a greater extent.
Optionally, referring to fig. 3 again, each first routing segment 11 and the second overlapping signal line 10 form a parallel structure through at least two connecting routing lines 26, so as to ensure stable electrical connection between each first routing segment 11 and the second overlapping signal line 10, thereby ensuring stability of a parallel line formed by the first routing segment 11 and the second overlapping signal line, and further improving reliability of load reduction on the reference voltage signal line 5.
Optionally, as shown in fig. 4, fig. 4 is a schematic structural diagram of a display panel according to an embodiment of the present invention, where the display pixel 4 includes a first display pixel 14, the first display pixel 14 is a display pixel 4 that cannot emit light normally, the repair line 6 further includes a second type of repair line 15, and the second type of repair line 15 is electrically connected to the first display pixel 14, that is, the second type of repair line 15 is the repair line 6 used for repairing the first display pixel 14. The first lap signal line 9 further includes a second wire segment 16, the second wire segment 16 is electrically connected to the second repair line 15 through a via hole, the second wire segment 16 is electrically insulated from the second lap signal line 10, and two end portions of the second wire segment 16 are suspended.
When the first display pixels 14 which cannot normally emit light exist in the display panel, the first display pixels need to be repaired by the second repair line 15, and therefore, a driving signal for repairing is transmitted to the second repair line 15. The second wire segment 16 is electrically insulated from the second lap signal line 10, and two end portions of the second wire segment 16 are suspended, so that the second wire segment 16 is only electrically connected with the second repairing line 15, crosstalk between other signals and driving signals transmitted on the second repairing line 15 is avoided, the transmission reliability of the driving signals is ensured, and dark spots are effectively eliminated.
Further, referring to fig. 4 again, the first lap signal line 9 further includes a third trace section 17, the third trace section 17 is electrically connected to the second lap signal line 10, and two ends of the third trace section 17 are disposed in a suspended manner. When two adjacent groups of repair lines 6 are the second-type repair lines 15, a third routing section 17 with two suspended ends is further arranged between the two second routing sections 16 of the first lapping routing section, and the third routing section 17 is electrically connected with the second lapping signal line 10, so that the load of the reference voltage signal line 5 can be further reduced by using the third routing section 17.
Further, referring to fig. 4 again, each third routing segment 17 and the second overlapping signal line 10 form a parallel structure through at least two connecting routing lines 26, so as to ensure stable electrical connection between each third routing segment 17 and the second overlapping signal line 10, further ensure stability of a parallel line formed by the third routing segment 17 and the second overlapping signal line, and ensure reliability of load reduction on the reference voltage signal line 5.
Optionally, as shown in fig. 5, fig. 5 is a schematic structural diagram of the repair line 6 provided in the embodiment of the present invention, and the display panel further includes: a data line 18, the data line 18 extending in a first direction; and the virtual pixel 19, wherein the virtual pixel 19 is positioned in the non-display area 2. The display pixel 4 includes a first pixel driving circuit 20 and a first organic light emitting element 21, the first pixel driving circuit 20 is electrically connected to the data line 18, and the dummy pixel 19 includes a second pixel driving circuit 22. Each group of the repair lines 6 comprises a first sub-repair line 23 and a second sub-repair line 24, and the first sub-repair line 23 and the second sub-repair line 24 are respectively electrically connected with the second pixel driving circuit 22; when the display pixel 4 includes the first display pixel 14, the first sub-repair line 23 is further electrically connected to the first light emitting element in the first display pixel 14, the second sub-repair line 24 is further electrically connected to the first data line 25, the first display pixel 14 is the display pixel 4 incapable of emitting light normally, and the first data line 25 is the data line 18 electrically connected to the first pixel driving circuit 20 of the first display pixel 14.
Specifically, when the first display pixel 14 exists in the display panel, the first repair sub-line 23 corresponding to the first display pixel 14 is electrically connected to the second pixel driving circuit 22 and the first light emitting element of the first display pixel 14 respectively, the second repair sub-line 24 corresponding to the first display pixel 14 is electrically connected to the second pixel driving circuit 22 and the first data line 25 corresponding to the first display pixel 14, respectively, and based on this connection, it is equivalent to replace the first pixel driving circuit 20 in the first display pixel 14 with the second pixel driving circuit 22, the second pixel driving circuit 22 receives the data signal required to be received by the first pixel driving circuit 20, and the driving current converted from the data signal is supplied to the first light emitting element, and the second pixel driving circuit 22 is used to drive the first light emitting element to normally emit light, thereby eliminating the dark spot.
Optionally, referring to fig. 5 again, the display panel further includes a dummy pixel 19, and the dummy pixel 19 is located in the non-display area 2; the crossover line 8 is located between the virtual pixel 19 and the display area 1, and on the premise of ensuring that the reference voltage signal line 5 is reduced, the crossover line 8 is prevented from shielding the light outgoing area of the display area 1.
Optionally, referring to fig. 5 again, the display panel further includes a data line 18, the data line 18 extends along the first direction; the overlapping line 8 and the data line 18 are arranged on the same layer, at the moment, the overlapping line 8 does not need to additionally occupy the film thickness, the thickness of the display panel is prevented from being increased, and the overlapping line 8 and the data line 18 are formed by the same composition process, so that the process flow is simplified, and the manufacturing cost is reduced.
An embodiment of the present invention further provides a manufacturing method of a display panel, as shown in fig. 6 by combining fig. 1 and fig. 4, fig. 6 is a flowchart of the manufacturing method provided in the embodiment of the present invention, where the manufacturing method includes:
step S1: providing a substrate base plate, and forming on the substrate base plate: pixel rows 3, the pixel rows 3 being arranged in a first direction in the display area 1, each pixel row 3 including a plurality of display pixels 4 arranged in a second direction, the first direction intersecting the second direction; a reference voltage signal line 5, the reference voltage signal line 5 extending in a second direction; at least one set of repair lines 6, the repair lines 6 extending in a second direction; at least one set of overlapping wires 8, the overlapping wires 8 extend along a first direction, the overlapping wires 8 comprise a first overlapping signal wire 9 and a second overlapping signal wire 10, the first overlapping signal wire 9 is electrically connected with the repairing wire 6 and the second overlapping signal wire 10 respectively, and the second overlapping signal wire 10 is electrically connected with the reference voltage signal wire 5.
Step S2: the display panel is lit up, and whether or not the first display pixel 14 exists is detected, and the first display pixel 14 is the display pixel 4 which cannot normally emit light.
Step S3: if the first display pixel 14 exists, the repairing line 6 comprises a first repairing line 7 and a second repairing line 15, the first repairing line 7 is not electrically connected with the display pixel 4, and the second repairing line 15 is electrically connected with the first display pixel 14; the first lapping signal line 9 is subjected to laser cutting, so that the first lapping signal line 9 comprises a first wire route section 11 and a second wire route section 16, wherein the first wire route section 11 is respectively and electrically connected with the first repairing line 7 and the second lapping signal line 10, the second wire route section 16 is electrically connected with the second repairing line 15 through a through hole, the second wire route section 16 is electrically insulated from the second lapping signal line 10, and two end parts of the second wire route section 16 are arranged in a suspended mode. If the first display pixel 14 does not exist, the repair line 6 only comprises the first type of repair line 7, the first lapping signal line 9 is not cut by laser, and the first lapping signal line 9 only comprises the first routing segment 11.
After the lighting test is performed, the position of the second repair line 15 electrically connected to the first display pixel 14 to be repaired is determined according to the position of the first display pixel 14 to be repaired, and the region electrically connected to the second repair line 15 in the first overlapping signal line 9 is cut to form the first routing segment 11 and the second routing segment 16.
According to the display panel formed by the manufacturing method, the first lapping signal line 9 and the second lapping signal line 10 are additionally arranged on the substrate, based on the connection relation among the first lapping signal line 9, the second lapping signal line 10, the first repairing line 7 and the reference voltage signal line 5, the parasitic capacitance of the reference voltage signal line 5 can be reduced by the first repairing line 7, the resistance of the reference voltage signal line 5 is reduced by the first routing line segment 11 and the second lapping signal line 10, and therefore the load of the reference voltage signal line 5 is effectively reduced. Therefore, the attenuation degree of the reference voltage signal transmitted to the middle display area can be effectively reduced, the difference between the reference voltage signal in the middle display area and the reference voltage signal in other display areas is reduced, the overall display uniformity of the display area 1 is improved, and the display performance is optimized.
In addition, it should be further noted that, when the first overlapping signal line 9 is formed, with reference to fig. 3 and 4, the first overlapping signal line 9 is electrically connected to the second overlapping signal line 10 through the plurality of connecting traces 26, and after the region electrically connected to the second repair line 15 in the first overlapping signal line 9 is cut, the trace segments in the other regions except the second trace segment 16 in the first overlapping signal line 9 can still be ensured to be electrically connected to the second overlapping signal line 10, so as to improve the reliability of reducing the load of the reference voltage signal line 5.
Alternatively, referring to fig. 2, the display panel includes a non-display region 2 surrounding the display region 1, the non-display region 2 includes a first non-display region 12 and a second non-display region 13 disposed oppositely, and the first non-display region 12 and the second non-display region 13 extend along a first direction, respectively. Based on this, the process of forming the repair line 6 includes: a group of repair lines 6 are correspondingly arranged on each pixel row 3. The process of forming the crossover wire 8 includes: a set of overlapping wires 8 are respectively arranged in the first non-display area 12 and the second non-display area 13; in the first non-display area 12, the first lap signal line 9 is electrically connected with the repair line 6 corresponding to the x-th pixel row 3, and the second lap signal line 10 is electrically connected with one end of the reference voltage signal line 5; in the second non-display area 13, the first lapping signal line 9 is electrically connected with the repairing line 6 corresponding to the y-th pixel row 3, and the second lapping signal line 10 is electrically connected with the other end of the reference voltage signal line 5; x is 2n-1, y is 2n, and n is a positive integer greater than or equal to 1.
A group of overlapping wires 8 are respectively arranged in the first non-display area 12 and the second non-display area 13, the first routing segments 11 in the first non-display area 12 are electrically connected with the first-class repair lines 7 corresponding to odd-numbered pixel rows 3, and the first routing segments 11 in the second non-display area 13 are electrically connected with the first-class repair lines 7 corresponding to even-numbered pixel rows 3, so that the first-class repair lines 7 corresponding to all the pixel rows 3 can be ensured to be electrically connected with the reference voltage signal line 5, the reference voltage signal is transmitted on all the first-class repair lines 7, and the parasitic capacitance of the reference voltage signal line 5 is reduced to a greater extent. In addition, the first routing segment 11 and the second lapping signal line 10 are respectively arranged in the first non-display area 12 and the second non-display area 13, so that the number of formed parallel lines is increased, and the resistance of the reference voltage signal line 5 is further reduced.
Optionally, in conjunction with fig. 3, the process of forming the crossover line 8 further includes: in the first non-display area 12, the first lap signal line is also electrically connected to the repair line 6 corresponding to the y-th pixel row 3, and in the second non-display area 13, the first lap signal line 9 is also electrically connected to the repair line 6 corresponding to the x-th pixel row 3. With the arrangement, two ends of the first-class repair line 7 are electrically connected with the reference voltage signal line 5 through the first routing segment 11 and the second lapping signal line 10 of the first non-display area 12 and the second non-display area 13, and a parallel line is also formed between the first-class repair line 7 and the reference voltage signal line 5, so that the load of the reference voltage signal line 5 is reduced to a greater extent.
Alternatively, with reference to fig. 5, the display panel includes a non-display area 2 surrounding the display area 1, and step S1 further includes: the substrate base plate is also provided with: a virtual pixel 19, the virtual pixel 19 is located in the non-display area 2; a data line 18, the data line 18 extending in a first direction; the crossover line 8 is located between the dummy pixel 19 and the display region 1, and the crossover line 8 and the data line 18 are disposed on the same layer.
The crossover line 8 is positioned between the virtual pixel 19 and the display area 1, so that the light outgoing area of the display area 1 is prevented from being shielded by the crossover line 8 on the premise of ensuring that the reference voltage signal line 5 is reduced. In addition, the overlapping wire 8 and the data wire 18 are arranged on the same layer, the overlapping wire 8 does not need to occupy extra film thickness, the thickness of the display panel is prevented from being increased, the overlapping wire 8 does not need to be formed by adopting an extra composition process, the process flow is simplified, and the manufacturing cost is reduced.
As shown in fig. 7, fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present invention, and the display device includes the display panel 100. The specific structure of the display panel 100 has been described in detail in the above embodiments, and is not described herein again. Of course, the display device shown in fig. 7 is only a schematic illustration, and the display device may be any electronic device with a display function, such as a mobile phone, a tablet computer, a notebook computer, an electronic book, or a television.
Since the display device provided by the embodiment of the invention includes the display panel 100, the display device can effectively reduce the load of the reference voltage signal line 5, further effectively reduce the attenuation degree of the reference voltage signal when the reference voltage signal is transmitted to the middle display area, improve the overall display uniformity of the display area 1, and optimize the display performance.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (17)
1. A display panel, comprising:
a display area and a non-display area surrounding the display area;
pixel rows arranged in a first direction in the display area, each of the pixel rows including a plurality of display pixels arranged in a second direction, the first direction intersecting the second direction;
a reference voltage signal line extending in the second direction;
at least one group of repairing lines, wherein the repairing lines extend along the second direction, the repairing lines comprise first repairing lines, and the first repairing lines are not electrically connected with the display pixels;
the first lapping signal line comprises a first wiring section which is electrically connected with the first repairing line and the second lapping signal line respectively, and the second lapping signal line is electrically connected with the reference voltage signal line.
2. The display panel according to claim 1, wherein a set of the repair lines is correspondingly disposed for each of the pixel rows.
3. The display panel according to claim 2, wherein the non-display region includes a first non-display region and a second non-display region that are oppositely disposed, the first non-display region and the second non-display region respectively extending in the first direction;
the display panel comprises two groups of overlapping wires which are respectively positioned in the first non-display area and the second non-display area;
in the first non-display area, the first routing line segment is electrically connected with the first type of repair line corresponding to the x-th pixel row, and the second lapping signal line is electrically connected with one end of the reference voltage signal line;
in the second non-display area, the first routing line segment is electrically connected with the first type of repair line corresponding to the y-th pixel row, and the second lapping signal line is electrically connected with the other end of the reference voltage signal line;
x is 2n-1, y is 2n, and n is a positive integer greater than or equal to 1.
4. The display panel according to claim 3, wherein both ends of each of the reference voltage signal lines are electrically connected to the second overlapping signal lines, respectively.
5. The display panel according to claim 3, wherein the first routing segment is further electrically connected to the first repair line of the first kind corresponding to the y-th pixel row in the first non-display region, and the first routing segment is further electrically connected to the first repair line of the first kind corresponding to the x-th pixel row in the second non-display region.
6. The display panel according to claim 1, wherein each of the first routing segments and the second overlapping signal lines form a parallel structure through at least two connecting routing lines.
7. The display panel according to claim 1, wherein the display pixels comprise first display pixels which cannot normally emit light, and the repair lines further comprise second repair lines which are electrically connected with the first display pixels;
the first lapping signal line further comprises a second wiring section, the second wiring section is electrically connected with the second repairing line through a via hole, the second wiring section is electrically insulated from the second lapping signal line, and two end parts of the second wiring section are arranged in a suspended mode.
8. The display panel according to claim 7, wherein the first overlapping signal line further comprises a third trace section, the third trace section is electrically connected to the second overlapping signal line, and two ends of the third trace section are suspended.
9. The display panel according to claim 8, wherein each of the third wire segments and the second overlapping signal line form a parallel structure through at least two connecting wires.
10. The display panel according to claim 1, characterized in that the display panel further comprises:
a data line extending in the first direction;
a virtual pixel located in the non-display area;
the display pixel includes a first pixel driving circuit and a first organic light emitting element, the first pixel driving circuit is electrically connected to the data line, and the dummy pixel includes a second pixel driving circuit;
each group of the repairing lines comprises a first sub repairing line and a second sub repairing line, and the first sub repairing line and the second sub repairing line are respectively and electrically connected with the second pixel driving circuit; when the display pixel comprises a first display pixel, the first sub-repairing line is further electrically connected with the first organic light-emitting element in the first display pixel, the second sub-repairing line is further electrically connected with a first data line, the first display pixel cannot emit light normally, and the first data line is electrically connected with the first pixel driving circuit of the first display pixel.
11. The display panel according to claim 1, wherein the display panel further comprises a dummy pixel, the dummy pixel being located in the non-display region;
the overlapping line is located between the dummy pixel and the display region.
12. The display panel according to claim 1, further comprising a data line extending in the first direction;
the lap joint line and the data line are arranged on the same layer.
13. A method for manufacturing a display panel is characterized by comprising the following steps:
providing a substrate base plate, and forming on the substrate base plate: pixel rows arranged in a first direction in a display area, each of the pixel rows including a plurality of display pixels arranged in a second direction, the first direction intersecting the second direction; a reference voltage signal line extending in the second direction; at least one set of repair lines extending in the second direction; at least one set of overlapping wires extending along the first direction, the overlapping wires including a first overlapping signal wire and a second overlapping signal wire, the first overlapping signal wire being electrically connected with the repair wire and the second overlapping signal wire, respectively, the second overlapping signal wire being electrically connected with the reference voltage signal wire;
lighting the display panel, and detecting whether a first display pixel exists, wherein the first display pixel cannot emit light normally;
if the first display pixel exists, the repairing line comprises a first repairing line and a second repairing line, the first repairing line is not electrically connected with the display pixel, and the second repairing line is electrically connected with the first display pixel; performing laser cutting on the first lapping signal line to enable the first lapping signal line to comprise a first routing segment and a second routing segment, wherein the first routing segment is electrically connected with the first repairing line and the second lapping signal line respectively, the second routing segment is electrically connected with the second repairing line through a via hole, the second routing segment is electrically insulated from the second lapping signal line, and two end parts of the second routing segment are arranged in a suspended manner; if the first display pixel does not exist, the repairing line only comprises the first type of repairing line, the first lapping signal line is not subjected to laser cutting, and the first lapping signal line only comprises the first routing line segment.
14. The method according to claim 13, wherein the display panel includes a non-display region surrounding the display region, the non-display region includes a first non-display region and a second non-display region disposed opposite to each other, and the first non-display region and the second non-display region extend in the first direction;
the process of forming the repair line includes:
each pixel row is correspondingly provided with a group of repairing lines;
the process of forming the crossover includes:
respectively arranging a group of overlapping wires in the first non-display area and the second non-display area; in the first non-display area, the first lapping signal line is electrically connected with the repair line corresponding to the x-th pixel row, and the second lapping signal line is electrically connected with one end of the reference voltage signal line;
in the second non-display area, the first lapping signal line is electrically connected with the repairing line corresponding to the y-th pixel row, and the second lapping signal line is electrically connected with the other end of the reference voltage signal line; x is 2n-1, y is 2n, and n is a positive integer greater than or equal to 1.
15. The method of manufacturing of claim 14, wherein the process of forming the crossover further comprises:
in the first non-display area, the first lapping signal line is also electrically connected with the repairing line corresponding to the y-th pixel row, and in the second non-display area, the first lapping signal line is also electrically connected with the repairing line corresponding to the x-th pixel row.
16. The method of manufacturing according to claim 13, wherein the display panel includes a non-display area surrounding the display area;
the substrate base plate is also provided with:
a virtual pixel located in the non-display area;
a data line extending in the first direction;
the overlapping line is located between the virtual pixel and the display area, and the overlapping line and the data line are arranged on the same layer.
17. A display device comprising the display panel according to any one of claims 1 to 12.
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| CN201911204839.6A CN110867478B (en) | 2019-11-29 | 2019-11-29 | Display panel, manufacturing method thereof and display device |
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| CN111653601B (en) * | 2020-06-17 | 2022-09-02 | 昆山国显光电有限公司 | Display panel and display device |
| CN215183964U (en) * | 2020-08-03 | 2021-12-14 | 友达光电股份有限公司 | Pixel array substrate |
| CN112837618B (en) * | 2021-01-11 | 2024-01-30 | 合肥维信诺科技有限公司 | Display panel and display device |
| CN113516917B (en) * | 2021-05-26 | 2023-05-12 | 京东方科技集团股份有限公司 | Display panel, display device and broken line repairing method |
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| CN103913905A (en) * | 2012-12-31 | 2014-07-09 | 三星显示有限公司 | Display device |
| US20180061908A1 (en) * | 2016-08-31 | 2018-03-01 | Lg Display Co., Ltd. | Display device |
| KR20190064091A (en) * | 2017-11-30 | 2019-06-10 | 엘지디스플레이 주식회사 | Organic light emitting display device |
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| CN103913905A (en) * | 2012-12-31 | 2014-07-09 | 三星显示有限公司 | Display device |
| US20170068136A1 (en) * | 2012-12-31 | 2017-03-09 | Samsung Display Co., Ltd. | Display device |
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