CN113076030A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN113076030A CN113076030A CN202110461890.6A CN202110461890A CN113076030A CN 113076030 A CN113076030 A CN 113076030A CN 202110461890 A CN202110461890 A CN 202110461890A CN 113076030 A CN113076030 A CN 113076030A
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- display panel
- driving signal
- touch
- touch signal
- 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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
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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
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
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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
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/147—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
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- General Physics & Mathematics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the invention discloses a display panel and a display device. The display panel includes: the touch signal connecting lines and the driving signal lines in the display panel are positioned in different metal layers; the shielding structure is positioned in the metal layer between the metal layer where the touch signal connecting line is positioned and the metal layer where the driving signal line is positioned; the shielding structure comprises a main body part and at least two branch parts connected with the main body part; the vertical projection of the main body part on the display panel is overlapped with the vertical projection of the touch signal connecting lines on the display panel and the vertical projection of the driving signal lines on the display panel, and the vertical projections of the touch signal connecting lines on the display panel are positioned between the vertical projections of the at least two branch parts on the display panel. According to the scheme, the touch signal transmitted by the touch signal connecting line is shielded through the shielding structure to relieve poor display caused by the interference of the touch signal on the driving signal, so that the display effect is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel and a display device.
Background
With the continuous development of display technology, people have higher and higher performance requirements on display devices. At present, a display device generally has a touch function, and since the frequency of a touch signal is generally high and signal lines in the display device are dense, the touch signal interferes with a driving signal of the display device, thereby affecting a display effect.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, which are used for reducing the interference degree of a touch signal to a display driving signal.
In a first aspect, an embodiment of the present invention provides a display panel, including a display area and a non-display area, where the display panel includes:
the touch signal terminals are positioned at one end of the non-display area, which is far away from the display area;
the touch signal connecting lines are positioned in the non-display area and connected with the corresponding touch signal ends in the non-display area, and the touch signal connecting lines and the driving signal lines in the display panel are positioned in different metal layers;
the shielding structure is positioned in the metal layer between the metal layer where the touch signal connecting line is positioned and the metal layer where the driving signal line is positioned; the shielding structure comprises a main body part and at least two branch parts connected with the main body part, wherein the main body part extends along a first direction, the branch parts extend along a second direction, and the first direction and the second direction are intersected;
the vertical projection of the main body part on the display panel is overlapped with the vertical projection of the touch signal connecting lines on the display panel and the vertical projection of the driving signal lines on the display panel, and the vertical projections of the touch signal connecting lines on the display panel are positioned between the vertical projections of the at least two branch parts on the display panel.
Optionally, the first direction is perpendicular to the second direction.
Optionally, in a direction perpendicular to the display panel, a distance from a surface of one side of the branch portion, which is away from the driving signal line, to the metal layer where the driving signal line is located is greater than or equal to a distance from a surface of one side of the touch signal line, which is away from the driving signal line, to the metal layer where the driving signal line is located.
Optionally, the at least two branch portions include two first branch portions, and the two first branch portions are respectively connected to two ends of the main body portion;
the setting areas of the touch signal connecting lines and the driving signal lines in the display panel are positioned between the setting areas of the two first branch parts in the display panel.
Optionally, the touch panel further comprises a plurality of driving signal ends, the driving signal lines are connected to the driving signal ends, and the touch signal ends are located at two sides of the plurality of driving signal ends; the at least two branch parts further comprise second branch parts positioned between the adjacent touch signal ends and the driving signal ends;
the setting area of the touch signal connecting line in the display panel is positioned between the setting areas of the adjacent first branch part and the second branch part in the display panel; at least part of the arrangement areas of the driving signal lines in the display panel are positioned between the arrangement areas of two adjacent second branch parts in the display panel.
Optionally, the touch control device further comprises a setting signal end located at both sides of the plurality of touch control signal ends and the plurality of driving signal ends, and located between the adjacent touch control signal ends and the driving signal ends;
one the first branch portion is connected with the setting signal end which is positioned on one side of the plurality of touch signal ends and the plurality of driving signal ends, the other one of the first branch portion is connected with the setting signal end which is positioned on the other side of the plurality of touch signal ends and the plurality of driving signal ends, and the second branch portion is connected with the adjacent touch signal end and the setting signal end between the driving signal ends.
Optionally, the setting signal terminal is a power signal terminal.
Optionally, comprising:
the display function layer comprises a first metal layer and a second metal layer, the driving signal line is positioned in the first metal layer, and the driving signal line comprises a data line; the second metal layer includes a power line of the display panel;
the touch control functional layer is positioned on one side, close to the second metal layer, of the display functional layer, and the touch control signal connecting line is positioned in the touch control functional layer; the shielding structure is disposed in the second metal layer.
Optionally, the power line serves as the shielding structure.
In a second aspect, an embodiment of the present invention further provides a display device, including the display panel according to the first aspect.
The display panel and the display device provided by the embodiment of the invention have the advantages that the touch signal connecting lines and the driving signal lines in the non-display area of the display panel are arranged on different metal layers, the shielding structure is arranged in the metal layer between the metal layer where the touch signal connecting lines are arranged and the metal layer where the driving signal lines are arranged, the vertical projection of the main body part of the shielding structure on the display panel is overlapped with the vertical projection of the touch signal connecting lines on the display panel and the vertical projection of the driving signal lines on the display panel, the touch signal connecting lines and the driving signal lines can be isolated by the main body part of the shielding structure to reduce the interference degree of touch signals on the driving signals, the vertical projection of the touch signal connecting lines on the display panel is arranged between the vertical projections of at least two branch parts on the display panel, so that at least part of the branch parts are arranged at two sides of the, the touch signal is further shielded by the branch part of the shielding structure, so that poor display caused by interference of the touch signal on the driving signal is relieved, and the display effect is promoted.
Drawings
Fig. 1 is a top view of a display panel according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a display panel according to an embodiment of the present invention;
FIG. 3 is a top view of another display panel provided in accordance with an embodiment of the present invention;
fig. 4 is a cross-sectional view of another display panel provided in an embodiment of the present invention;
fig. 5 is a cross-sectional view of another display panel provided in an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As described in the background, the touch signal in the display device may interfere with the driving signal, thereby affecting the display effect. The inventor researches and finds that the reason for the problems is that: touch structures In display devices are generally classified into On-cell type and In-cell type touch structures, where an On-cell is a scheme for disposing a touch structure In a display module, for example, a touch function layer may be disposed On an encapsulation layer of a display function layer. In the On-cell structure, the signal lines in the touch functional layer and the signal lines in the display functional layer are located in different film layers, and considering the stress problem of the bending region, the signal lines of the touch functional layer need to be accessed into the touch signals through the routing of the array segments, and the frequency of the touch signals is usually high, so that interference can be generated On the signals transmitted by the signal lines in the display functional layer, and the display effect is influenced.
In view of the foregoing problems, embodiments of the present invention provide a display panel. Fig. 1 is a top view of a display panel according to an embodiment of the present invention; fig. 2 is a cross-sectional view of a display panel according to an embodiment of the present invention, which may be a cross-sectional view of the display panel shown in fig. 1 cut along a cross-sectional line BB'. Referring to fig. 1 and 2, the display panel 100 includes:
a plurality of touch signal terminals a1 located at one end of the non-display area NAA of the display panel 100 away from the display area AA; a plurality of touch signal connection lines 10 located in the non-display area NAA of the display panel 100, wherein the touch signal connection lines 10 are connected to corresponding touch signal terminals a1 in the non-display area NAA of the display panel 100, and the touch signal connection lines 10 and the driving signal lines 20 in the display panel 100 are located in different metal layers;
the shielding structure 30 is positioned in the metal layer between the metal layer where the touch signal connection line 10 is positioned and the metal layer where the driving signal line 20 is positioned; the shielding structure 30 includes a main body portion 31 and at least two branch portions 32 connected to the main body portion 31, the main body portion 31 extends in a first direction X, the branch portions 32 extend in a second direction Y, and the first direction X and the second direction Y intersect;
the vertical projection of the main body 31 on the display panel 100 overlaps with the vertical projection of the touch signal connection lines 10 on the display panel 100 and the vertical projection of the driving signal lines 20 on the display panel 100, and the vertical projection of the touch signal connection lines 10 on the display panel 100 is located between the vertical projections of the at least two branch portions 32 on the display panel 100.
Specifically, the display panel 100 according to the embodiment of the present invention is a touch display panel, and the display panel may include a display functional layer 50 and a touch functional layer 60, where the touch functional layer 60 includes touch electrodes and touch signal lines (the touch electrodes and the touch signal lines are not shown in the figure) connected to the touch electrodes, and the touch signal connecting lines 10 are connected between the corresponding touch signal lines and the touch signal terminal a1 for transmitting touch signals, so that the display panel 100 can implement a touch function. The touch signal terminal a1 is located at an end of the non-display area NAA away from the display area AA, which means that the touch signal terminal a1 is located at an end of the non-display area NAA of the display panel 100 connected to the driving chip.
The display function layer 50 includes a plurality of metal layers, the driving signal lines 20 in the display panel 100 are located in the metal layers of the display function layer 50, and the touch signal connection lines 10 and the driving signal lines 20 are located in different metal layers of the display panel. Alternatively, the driving signal line 20 may be a data line for transmitting a data voltage signal to the pixel circuit in the display area AA. The shielding structure 30 is located in the metal layer between the metal layer where the touch signal connection line 10 is located and the metal layer where the driving signal line 20 is located, the shielding structure 30 is made of metal, for example, the shielding structure 30 may include a titanium layer, an aluminum layer, and a titanium layer, which are stacked.
The main body 31 and the branch 32 in the shielding structure 30 are both located in the non-display area NAA and are disposed in the lower frame region of the display panel 100, an extending direction of the main body 31 (i.e., the first direction X) may be a direction parallel to a lower edge of the display area AA, and an extending direction of the branch 32 (i.e., the second direction Y) intersects with the first direction X. The vertical projection of the main body 31 on the display panel 100 overlaps with the vertical projection of the touch signal connection line 10 on the display panel 100 and the vertical projection of the driving signal line 20 on the display panel 100, which means that the extending direction of the main body 31 intersects with the extending directions of the touch signal connection line 10 and the driving signal line 20, and the main body 31 spatially overlaps with the touch signal connection line 10 and spatially overlaps with the driving signal line 20 to isolate the touch signal connection line 10 and the driving signal line 20 by the main body 31. The vertical projection of the plurality of touch signal connection lines 10 on the display panel 100, which is located between the vertical projections of the at least two branch portions 32 on the display panel 100, means that the arrangement area of the plurality of touch signal connection lines 10 in the display panel 100 is located between the arrangement areas of the at least two branch portions 32 in the display panel 100, so that at least a part of the branch portions 32 are located at two sides of the periphery of the plurality of touch signal connection lines 10, thereby further isolating the touch signal connection lines 10 from the driving signal lines 20 through the branch portions 32. Fig. 1 only illustrates a case that the shielding structure 30 includes two branch portions 32, in practical applications, the shielding structure 30 may further include a plurality of branch portions 32 to increase an area of the shielding structure 30, so as to improve a shielding effect of the shielding structure 30 on the touch signal connection line 10 and the driving signal line 20.
In fig. 1, in order to more clearly illustrate the relative positional relationship between the structures in the display panel 10, the main body 31 of the shielding structure 30 is disposed at a certain distance from the lower edge of the display area AA. In practical applications, the distance between the main body 31 and the lower edge of the display area AA can be reduced, for example, the main body 31 is disposed to extend to a position where the touch signal connecting line 10 is close to one end of the lower edge of the display area AA, so that the disposed area of the main body 31 can cover the extended area of the touch signal connecting line 10, and the disposed area of the touch signal connecting lines 10 in the display panel 100 is ensured to be located between the main body 31 and the area of the semi-enclosed structure formed by the branch portions 32 in the display panel 100.
In the prior art, the traces in the lower frame region of the display panel are dense, and the lower frame region includes traces for transmitting the touch signals and display driving signal lines. Moreover, the traces in the lower bezel area are usually configured as fan-out traces, so that the traces for transmitting the touch signals and the display driving signal lines are spatially overlapped (for example, in practical applications, the driving signal lines 20 shown in fig. 1 are fan-out traces, and at least a part of the driving signal lines 20 are spatially overlapped with the touch signal connecting lines 10), which increases the interference degree of the touch signals to the display driving signals. Compared with the prior art, the scheme arranges the touch signal connecting lines and the driving signal lines in the non-display area of the display panel at different metal layers, the shielding structure 30 is arranged in the metal layer between the metal layer where the touch signal connecting lines are arranged and the metal layer where the driving signal lines are arranged, the vertical projection of the main body part 31 of the shielding structure 30 on the display panel is overlapped with the vertical projection of the touch signal connecting lines on the display panel and the vertical projection of the driving signal lines on the display panel, the touch signal connecting lines and the driving signal lines can be isolated through the main body part 31 of the shielding structure 30 to reduce the interference degree of the touch signals on the driving signals, the vertical projection of the plurality of touch signal connecting lines on the display panel is arranged between the vertical projections of at least two branch parts 32 on the display panel, so that at least part of the branch parts 32 are arranged at two sides of the periphery of the plurality, the touch signal is further shielded by the branch portion 32 of the shielding structure 30, so that poor display caused by interference of the touch signal on the driving signal is relieved, and the display effect is improved.
Referring to fig. 1, on the basis of the above scheme, optionally, the first direction X is perpendicular to the second direction Y. When the extending direction of the touch signal connecting lines 10 is perpendicular to the first direction X, by setting the extending direction of the branch portions 32 of the shielding structure 30 to be perpendicular to the extending direction of the main body portion 31, not only can at least some of the branch portions 32 be located at two sides of the periphery of the plurality of touch signal connecting lines 10, but also the area of the lower frame of the display panel occupied by the branch portions 32 can be reduced.
With continued reference to fig. 1, optionally, the at least two branch portions 32 include two first branch portions 32a, and the two first branch portions 32a are respectively connected to two ends of the main body portion 31 on the same side; the arrangement areas of the touch signal connection lines 10 and the driving signal lines 20 in the display panel 100 are located between the arrangement areas of the two first branch portions 32a in the display panel 100. Specifically, since the main body portion 31 of the shielding structure 30 and each of the touch signal connection lines 10 and the driving signal lines 20 in the display panel are spatially overlapped, one first branch portion 32a may be disposed at one end of the main body portion 31 along the first direction X, and another first branch portion 32a may be disposed at the other end of the main body portion 31 along the first direction X, such that the one first branch portion 32a is located at one side of the arrangement region of the plurality of touch signal connection lines 10, and the another first branch portion 32a is located at the other side of the arrangement region of the plurality of touch signal connection lines 10, and the shielding structure 30 forms a half-enclosure structure for each of the touch signal connection lines 10 in the display panel 100 as a whole, thereby improving the shielding effect of the shielding structure 30 on the touch signal connection lines 10 and the driving signal lines 20.
Fig. 3 is a top view of another display panel according to an embodiment of the invention, as shown in fig. 3, optionally, the display panel 100 further includes a plurality of driving signal terminals a2, the driving signal lines 20 are connected to the driving signal terminals a2, and the touch signal terminals a1 are located at two sides of the driving signal terminals a 2; the at least two branch portions 32 further include a second branch portion 32b located between the adjacent touch signal terminal a1 and the driving signal terminal a 2; the setting areas of the touch signal connection lines 10 in the display panel 100 are located between the setting areas of the adjacent first branch portions 32a and second branch portions 32b in the display panel 100; at least a part of the arrangement region of the driving signal line 20 in the display panel 100 is located between the arrangement regions of the adjacent two second branch portions 32b in the display panel 100.
Specifically, the driving chip in the display panel may provide a driving signal to the driving signal terminal a2 to transmit a data voltage signal to the pixel circuit in the display area AA through the driving signal line 20. Each driving signal terminal a2 forms a driving signal terminal group, each touch signal terminal a1 forms two touch signal terminal groups, one touch signal terminal group can be disposed on the left side of the driving signal terminal group, and the other touch signal terminal group can be disposed on the right side of the driving signal terminal group, which is beneficial for disposing the touch signal connection line 10 on both sides of the driving signal line 20, thereby reducing the interference degree of the touch signal transmitted by the touch signal connection line 10 on the driving signal transmitted by the driving signal line 20. The shielding structure 30 further includes two second branch portions 32b, each second branch portion 32b is disposed in an area between the adjacent driving signal terminal group and the adjacent touch signal terminal group, so that the disposed area of the touch signal connection line 10 on each side of the driving signal line 20 is disposed between the disposed areas of the adjacent first branch portion 32a and the adjacent second branch portion 32b, and at least a portion of the driving signal line 20 is disposed between the disposed areas of the two second branch portions 32b, so that the shielding structure 30 forms a semi-surrounding structure for the driving signal terminal group and each touch signal terminal group, thereby further improving the shielding effect of the shielding structure 30 on the touch signal connection line 10 and the driving signal line 20.
Fig. 4 is a cross-sectional view of another display panel provided in an embodiment of the present invention, which may be a cross-sectional view of the display panel shown in fig. 3 cut along a cross-sectional line CC; fig. 5 is a cross-sectional view of another display panel according to an embodiment of the present invention, and may be another cross-sectional view of the display panel shown in fig. 3, which is cut along a cross-sectional line CC'. With reference to fig. 3 to fig. 5, optionally, a distance h1 from the surface of the branch portion 32 away from the driving signal line 20 to the metal layer where the driving signal line 20 is located is equal to a distance h2 from the surface of the touch signal line 10 away from the driving signal line 20 to the metal layer where the driving signal line 20 is located, that is, h1 is equal to h 2.
Illustratively, for example, when forming the shielding structure 30, the thickness of the branch portion 32 (including the first branch portion 32a and/or the second branch portion 32b, fig. 4 only shows the first branch portion 32a) of the shielding structure 30 may be increased, so that the thickness of the branch portion 32 is greater than that of the main body portion 31, and then the insulating medium layer, the other film layers in the display function layer 50, and the touch function layer 60 are sequentially disposed on the shielding structure 30, and a surface of the branch portion 32 on a side away from the driving signal line 20 is ensured to be flush with a surface of the touch signal connection line 10 on a side away from the driving signal line 20, that is, the two surfaces are in the same plane, so that h1 is equal to h 2. In this way, along the length direction (i.e. the first direction X) of the main body 31, the branch portion 32 can shield the outside of the touch signal connection line 10, i.e. the side of the touch signal connection line 10 close to the branch portion 32, and shield the touch signal connection line through the branch portion of the shielding structure, which not only helps to shield the touch signal connection line, but also helps to prevent the touch signal connection line at the edge of the display panel from being corroded by water vapor, so as to avoid the touch function failure.
With reference to fig. 3 to fig. 5, optionally, a distance h1 from the surface of the branch portion 32 away from the driving signal line 20 to the metal layer where the driving signal line 20 is located is further provided, which is greater than a distance h2 from the surface of the touch signal line 10 away from the driving signal line 20 to the metal layer where the driving signal line 20 is located, that is, h1 > h 2. Like this, along first direction X, branch portion 32 can further shelter from the outside of touch-control signal connecting wire 10, has not only promoted the shielding effect of branch portion to touch-control signal connecting wire, still helps further to prevent that the touch-control signal connecting wire at display panel edge from being corroded by steam.
With reference to fig. 3 and fig. 5, optionally, the distance from the surface of the second branch portion 32b away from the driving signal line 20 to the metal layer where the driving signal line 20 is located in the shielding structure 30, the distance from the surface of the main body portion 31 connected to the second branch portion 32b away from the driving signal line 20 to the metal layer where the driving signal line 20 is located are both h3, and h3 is set to be greater than or equal to the distance h2 from the surface of the touch signal connection line 10 away from the driving signal line 20 to the metal layer where the driving signal line 20 is located. In this way, the area (i.e., the shielding structure 30 in the area D in fig. 3) where the second branch portion 32b and the main body portion 31 are connected to the second branch portion 32b can also shield one side of the touch signal connection line 10 close to the driving signal line 20, so as to further improve the shielding effect of the shielding structure 30 on the touch signal connection line 10 and the driving signal line 20, and meanwhile, the shielding structure can better block moisture and prevent corrosion to the touch signal connection line.
Referring to fig. 1 and 3, optionally, the display panel 100 further includes a set signal terminal a3 located at two sides of the touch signal terminals a1 and the driving signal terminals a2 and between the adjacent touch signal terminal a1 and the driving signal terminal a 2; one first branch portion 32a is connected to the setting signal terminal a3 at one side of the plurality of touch signal terminals a1 and the plurality of driving signal terminals a2, the other first branch portion 32a is connected to the setting signal terminal a3 at the other side of the plurality of touch signal terminals a1 and the plurality of driving signal terminals a2, and the second branch portion 32b is connected to the setting signal terminal a3 between the adjacent touch signal terminal a1 and the driving signal terminal a 2.
Specifically, the first branch portion 32a and the second branch portion 32b are connected to the setting signal terminal a3, so that the shielding structure 30 can be connected to a setting signal, which may be a fixed potential signal, and the shielding structure 30 is connected to the fixed potential signal, so that the shielding effect of the shielding structure 30 on the touch signal connection line 10 and the driving signal line 20 can be further improved. Alternatively, the setting signal terminal a3 may be a power signal terminal, such as a power signal terminal connected to the power signal ELVSS, so that the shielding structure 30 can be provided with a fixed potential signal by using the existing power signal terminal in the display panel without providing an additional signal terminal. In addition, the setting signal terminal a3 connected to the first branch portions 32a at the two ends of the main body 31 on the same side is located outside the touch signal terminal a1, which is beneficial to blocking the intrusion of water vapor, so as to avoid the water vapor from eroding the touch signal terminal a1 and the touch signal connection line 10, and further avoid the failure of the touch function.
It should be noted that fig. 1 and fig. 2 both show the case that the touch signal terminal a1, the driving signal terminal a2, and the setting signal terminal a3 are located on the circuit board 200 at the bottom of the display panel 100, the circuit board 200 may be a flexible circuit board, and the driving chip in the display device may be disposed on the circuit board 200. The bottom of the display panel 100 includes a bonding area, the bonding area may include a plurality of pads corresponding to the touch signal terminal a1, the driving signal terminal a2, and the setting signal terminal a3, and the touch signal connection line 10, the driving signal line 20, and the shielding structure 30 may be respectively connected to the corresponding pads. Since the touch signal connection lines 10 and the driving signal lines 20 are located in different metal layers, the touch signal connection lines 10 may be connected to the patch cords in the display function layer 50 through via holes, so that the touch signal connection lines 10 are connected to the corresponding pads through the patch cords. By bonding the signal terminals on the circuit board 200 to the bonding area of the display panel 100, the signal lines in the display panel can be connected to the driving chip through the circuit board 200, so that the driving chip provides signals to the signal lines. Optionally, the driving chip may also be directly disposed at the bottom of the display panel 100, and the touch signal terminal a1, the driving signal terminal a2, and the setting signal terminal a3 may also be signal terminals on the driving chip, and by bonding each signal terminal on the driving chip with a bonding area of the display panel 100, signals may also be directly provided to each signal line through the driving chip.
With reference to fig. 1 to fig. 5, optionally, the display panel 100 includes a display functional layer 50 and a touch functional layer 60, the display functional layer 50 includes a first metal layer 51 and a second metal layer 52, the driving signal line 20 is located in the first metal layer 51, and the driving signal line 20 includes a data line; the second metal layer 52 includes power lines of the display panel 100; the touch functional layer 60 is located on one side of the display functional layer 50 close to the second metal layer 52, and the touch signal connection line 10 is located in the touch functional layer 60; the shielding structure 30 is disposed in the second metal layer 52.
Specifically, the display function layer 50 is located on one side of the substrate 40, and the touch function layer 60 is located on one side of the display function layer 50 away from the substrate 40, so that the substrate 40 can provide buffering, protection or support for the display panel. The substrate 40 may be a flexible substrate, and the material of the flexible substrate may be Polyimide (PI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), or the like, or may be a mixture of the foregoing materials. The substrate 40 may be a hard substrate formed of glass or the like. The display function layer 50 may include a plurality of metal layers and a light emitting layer disposed on the substrate 40, and the touch function layer 60 may include a plurality of touch electrodes and touch signal lines connected to the touch electrodes. Illustratively, the second metal layer 52 is a metal layer closest to the light emitting layer in the display function layer 50, and the first metal layer 51 is located between the second metal layer 52 and the substrate 40. The driving signal line 20 in the first metal layer 51 may be a data line for transmitting a data voltage signal to the pixel circuit in the display area AA. The power line in the second metal layer 52 may be used to transmit the power signal ELVSS, and the shielding structure 30 may be disposed in the same layer as the second metal layer 52, so that the power line in the second metal layer 52 and the shielding structure 30 may be formed in the same process, thereby simplifying the manufacturing process of the display panel.
On the basis of the above-described scheme, optionally, a power supply line is used as the shielding structure 30. Specifically, the power line for transmitting the power signal ELVSS in the display panel is located in the non-display area NAA, and the power line is generally disposed around the display area AA. In this scheme, the power line in the lower frame region of the display panel 100 can be used as the shielding structure 30, and the length, the width and the shape of the power line are set, so that the setting region of the plurality of touch signal connection lines 10 in the display panel 100 is located in the region of the power line in the display panel, and the power line is reused as the shielding structure 30, thereby not only shielding the touch signal connection lines 10, but also facilitating the simplification of the manufacturing process of the display panel.
The embodiment of the invention also provides a display device, and fig. 6 is a schematic structural diagram of the display device provided by the embodiment of the invention. The display device 300 may be an electronic device with a display function, such as a mobile phone, a computer, or a tablet computer, and fig. 6 only schematically illustrates a case where the display device 300 is a mobile phone. The display device provided by the embodiment of the present invention includes the display panel provided by any of the above embodiments of the present invention, and thus has a corresponding structure and beneficial effects of the display panel, which are not described herein again.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A display panel including a display area and a non-display area, the display panel comprising:
the touch signal terminals are positioned at one end of the non-display area, which is far away from the display area;
the touch signal connecting lines are positioned in the non-display area and connected with the corresponding touch signal ends in the non-display area, and the touch signal connecting lines and the driving signal lines in the display panel are positioned in different metal layers;
the shielding structure is positioned in the metal layer between the metal layer where the touch signal connecting line is positioned and the metal layer where the driving signal line is positioned; the shielding structure comprises a main body part and at least two branch parts connected with the main body part, wherein the main body part extends along a first direction, the branch parts extend along a second direction, and the first direction and the second direction are intersected;
the vertical projection of the main body part on the display panel is overlapped with the vertical projection of the touch signal connecting lines on the display panel and the vertical projection of the driving signal lines on the display panel, and the vertical projections of the touch signal connecting lines on the display panel are positioned between the vertical projections of the at least two branch parts on the display panel.
2. The display panel according to claim 1, wherein the first direction is perpendicular to the second direction.
3. The display panel according to claim 1, wherein in a direction perpendicular to the display panel, a distance from a surface of the branch portion on a side away from the driving signal line to the metal layer on which the driving signal line is located is greater than or equal to a distance from a surface of the touch signal line on a side away from the driving signal line to the metal layer on which the driving signal line is located.
4. The display panel according to claim 1, wherein the at least two branch portions include two first branch portions connected to both ends of the main body portion, respectively;
the setting areas of the touch signal connecting lines and the driving signal lines in the display panel are positioned between the setting areas of the two first branch parts in the display panel.
5. The display panel according to claim 4, further comprising a plurality of driving signal terminals, wherein the driving signal lines are connected to the driving signal terminals, and the touch signal terminals are located at two sides of the plurality of driving signal terminals; the at least two branch parts further comprise second branch parts positioned between the adjacent touch signal ends and the driving signal ends;
the setting area of the touch signal connecting line in the display panel is positioned between the setting areas of the adjacent first branch part and the second branch part in the display panel; at least part of the arrangement areas of the driving signal lines in the display panel are positioned between the arrangement areas of two adjacent second branch parts in the display panel.
6. The display panel according to claim 5, further comprising a set signal terminal located at both sides of the touch signal terminals and the driving signal terminals, and between the touch signal terminals and the driving signal terminals;
one the first branch portion is connected with the setting signal end which is positioned on one side of the plurality of touch signal ends and the plurality of driving signal ends, the other one of the first branch portion is connected with the setting signal end which is positioned on the other side of the plurality of touch signal ends and the plurality of driving signal ends, and the second branch portion is connected with the adjacent touch signal end and the setting signal end between the driving signal ends.
7. The display panel according to claim 6, wherein the setting signal terminal is a power signal terminal.
8. The display panel according to claim 7, comprising:
the display function layer comprises a first metal layer and a second metal layer, the driving signal line is positioned in the first metal layer, and the driving signal line comprises a data line; the second metal layer includes a power line of the display panel;
the touch control functional layer is positioned on one side, close to the second metal layer, of the display functional layer, and the touch control signal connecting line is positioned in the touch control functional layer; the shielding structure is disposed in the second metal layer.
9. The display panel according to claim 8, wherein the power supply line serves as the shielding structure.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
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| CN202110461890.6A CN113076030B (en) | 2021-04-27 | 2021-04-27 | Display panel and display device |
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| CN202110461890.6A CN113076030B (en) | 2021-04-27 | 2021-04-27 | Display panel and display device |
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| CN113076030B CN113076030B (en) | 2023-08-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114185454A (en) * | 2021-12-13 | 2022-03-15 | 武汉华星光电半导体显示技术有限公司 | Display panel and electronic device |
| WO2023109173A1 (en) * | 2021-12-13 | 2023-06-22 | 合肥维信诺科技有限公司 | Touch display panel and touch display device |
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| CN207882614U (en) * | 2018-02-08 | 2018-09-18 | 昆山龙腾光电有限公司 | Touch-control display panel and touch control display apparatus |
| CN112436047A (en) * | 2020-11-30 | 2021-03-02 | 湖北长江新型显示产业创新中心有限公司 | Display panel and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN207882614U (en) * | 2018-02-08 | 2018-09-18 | 昆山龙腾光电有限公司 | Touch-control display panel and touch control display apparatus |
| CN112436047A (en) * | 2020-11-30 | 2021-03-02 | 湖北长江新型显示产业创新中心有限公司 | Display panel and display device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114185454A (en) * | 2021-12-13 | 2022-03-15 | 武汉华星光电半导体显示技术有限公司 | Display panel and electronic device |
| WO2023109173A1 (en) * | 2021-12-13 | 2023-06-22 | 合肥维信诺科技有限公司 | Touch display panel and touch display device |
| CN114185454B (en) * | 2021-12-13 | 2023-06-27 | 武汉华星光电半导体显示技术有限公司 | Display panel and electronic equipment |
| US12001630B2 (en) | 2021-12-13 | 2024-06-04 | Hefei Visionox Technology Co., Ltd. | Touch display panel and touch display apparatus |
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| CN113076030B (en) | 2023-08-25 |
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