CN111128969A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN111128969A CN111128969A CN201911283254.8A CN201911283254A CN111128969A CN 111128969 A CN111128969 A CN 111128969A CN 201911283254 A CN201911283254 A CN 201911283254A CN 111128969 A CN111128969 A CN 111128969A
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- display panel
- patterned
- electrostatic protection
- patterning
- patterned structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/58—Structural electrical arrangements for semiconductor devices not otherwise provided for, e.g. in combination with batteries
- H01L23/60—Protection against electrostatic charges or discharges, e.g. Faraday shields
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- H—ELECTRICITY
- 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
Abstract
The invention discloses a display panel and a display device, wherein the display panel comprises a substrate; the display panel comprises a substrate, an electrostatic protection structure positioned on the substrate, a dielectric layer and a first metal layer, wherein the electrostatic protection structure is arranged around at least part of a display area of the display panel and comprises at least two layers of patterning structures, the first patterning structure and the second patterning structure are positioned on one side, away from the substrate, of the first patterning structure; at least one overlapping area exists between the first patterned structure and the second patterned structure along the direction perpendicular to the display panel, an acute included angle is formed between the extending direction of the first patterned structure and the extending direction of the second patterned structure in the overlapping area, and the first patterned structure is provided with a concave portion corresponding to the overlapping area. By the technical scheme, the antistatic capacity of the electrostatic protection structure is optimized.
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 development of display technology, more and more display devices are applied to daily life and work of people, and great convenience is brought to the daily life and work of people. No matter the Static electricity is widely existed in daily life and work, Electrostatic Discharge (EDS) is a necessary means for preventing the display device from being out of operation during the use of the display device.
The display panel generally includes the display area and the non-display area that sets up around the display area, and the display area is provided with the light emitting component who is used for showing and corresponds the electronic components that light emitting component set up, and the existence of static can influence the working property of light emitting component in the display panel display area and corresponding light emitting component's electronic components in the display panel display area, and then influences display panel's display effect and leads to display panel to carry out normal demonstration even.
Disclosure of Invention
In view of this, the present invention provides a display panel and a display device, which optimize the antistatic capability of the electrostatic protection structure and reduce the probability of static electricity entering the display area inside the display panel.
In a first aspect, an embodiment of the present invention provides a display panel, including:
a substrate;
the electrostatic protection structure is positioned on the substrate and arranged around at least part of the display area of the display panel, the electrostatic protection structure comprises at least two layers of patterning structures including a first patterning structure and a second patterning structure, the second patterning structure is positioned on one side, away from the substrate, of the first patterning structure, the first patterning structure and the second patterning structure are respectively arranged on adjacent metal layers, and a dielectric layer is arranged between the first patterning structure and the second patterning structure;
along the direction perpendicular to the display panel, at least one overlapping area exists between the first patterned structure and the second patterned structure, an acute included angle is formed between the extending direction of the first patterned structure and the extending direction of the second patterned structure in the overlapping area, and the first patterned structure is provided with a concave portion corresponding to the overlapping area.
Further, the first patterning structure comprises at least two routing lines arranged at intervals;
preferably, the first patterned structure includes at least two parallel traces arranged at intervals.
Further, the second patterned structure includes a polygonal line.
Further, the first patterning structure comprises a surface far away from the substrate, and the thickness of the dielectric layer on the surface is greater than or equal to 100nm and smaller than or equal to 490 nm.
Further, a display area of the display panel is provided with a plurality of light emitting elements and a pixel driving circuit arranged corresponding to the light emitting elements, the pixel driving circuit including a plurality of thin film transistors and at least one capacitor structure;
the first patterning structure and the grid electrode of the thin film transistor are manufactured in the same layer, and the second patterning structure and the upper electrode plate of the capacitor structure are manufactured in the same layer.
Further, the display area comprises a first side and a second side which are oppositely arranged along a first direction and a third side and a fourth side which are oppositely arranged along a second direction, and the electrostatic protection structure is at least arranged around the first side, the second side and the third side; wherein the first direction intersects the second direction.
Further, the electrostatic protection structure is disposed around at least a portion of the fourth side.
Further, the electrostatic protection structure is connected with an electric signal with a constant potential;
preferably, the electrostatic protection structure is electrically connected to a driving chip, and the driving chip provides the electric signal of the constant potential to the electrostatic protection structure.
Further, at least one electric contact point electrically connected with a constant potential signal line is arranged on the electrostatic protection structure, and the constant potential signal line is arranged around at least part of the display area of the display panel.
In a second aspect, an embodiment of the present invention further provides a display device, which is characterized by including the display panel according to the first aspect.
The embodiment of the invention provides a display panel and a display device, wherein the display panel comprises a substrate and an electrostatic protection structure positioned on the substrate, the electrostatic protection structure is arranged around at least part of a display area of the display panel, the electrostatic protection structure comprises at least two layers of patterning structures including a first patterning structure and a second patterning structure, the second patterning structure is positioned on one side, away from the substrate, of the first patterning structure, the first patterning structure and the second patterning structure are respectively arranged on adjacent metal layers, and a dielectric layer is arranged between the first patterning structure and the second patterning structure. Along the direction of perpendicular to display panel, there is at least one overlap area first patterning structure and second patterning structure, acute included angle has between the extending direction of first patterning structure in the overlap area and the extending direction of second patterning structure, first patterning structure corresponds the overlap area and has the recess, the antistatic effect of electrostatic protection structure has been optimized, the probability that static gets into the inside display area of display panel has been reduced, it leads to the inorganic dielectric layer in the display area to be hit to have improved static, influence the working property of luminescent element in the display area of display panel and the electronic components who corresponds luminescent element, and then influence the display effect of display panel and lead to the problem that display panel can't normally show even.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic top view of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic enlarged view of a portion of area a of FIG. 1;
FIG. 3 is a schematic cross-sectional view along AA' of FIG. 2;
fig. 4 is a schematic cross-sectional view illustrating another display panel according to an embodiment of the invention;
fig. 5 is a schematic top view of another display panel according to an embodiment of the present invention;
fig. 6 is a schematic cross-sectional structure diagram of a display panel according to an embodiment of the present invention;
fig. 7 is a schematic top view of another display panel according to an embodiment of the present invention;
fig. 8 is a schematic top view of another display panel according to an embodiment of the present invention;
fig. 9 is a schematic top view 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. Throughout this specification, the same or similar reference numbers refer to the same or similar structures, elements, or processes. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
As background art, a display panel generally includes a display area and a non-display area surrounding the display area, the display area of the display panel is provided with light emitting elements for displaying and electronic components corresponding to the light emitting elements, the thicknesses of inorganic medium layers located between metal layers in the display area are different, the inorganic medium layer with smaller thickness is easily affected by static electricity and is damaged, that is, the existence of static electricity in the display area of the display panel causes the inorganic medium layer in the display area to be easily damaged, the working performance of the light emitting elements in the display area of the display panel and the electronic components corresponding to the light emitting elements is affected, and further the display effect of the display panel is affected and even the display panel cannot perform normal display.
In view of this, the embodiment of the invention utilizes the electrostatic protection structure to enable static electricity to be easily accumulated at the position of the electrostatic protection structure, thereby reducing the probability of static electricity entering the display panel, forming the electrostatic protection barrier at the edge of the display panel, and enhancing the antistatic capability of the display panel. In addition, the overlapping angle of the first patterned structure and the second patterned structure in the electrostatic protection structure and the arrangement of the concave part in the first patterned structure reduce the thickness of the dielectric layer on the side wall of the concave part, so that static electricity is accumulated in the first patterned structure and the second patterned structure at the edge position of the display panel, the static electricity is easily released through the thinner dielectric layer positioned on the side wall of the concave part, the static electricity releasing capacity of the dielectric layer positioned between the first patterning structure and the second patterning structure is optimized, the probability of the static electricity entering the display area in the display panel is further reduced, the phenomenon that the inorganic dielectric layer in the display area is damaged by the static electricity to influence the working performance of the light-emitting element in the display area of the display panel and the electronic component corresponding to the light-emitting element is improved, thereby affecting the display effect of the display panel and even causing the problem that the display panel can not display normally.
Fig. 1 is a schematic top view of a display panel according to an embodiment of the present invention, fig. 2 is a partially enlarged view of a region a in fig. 1, and fig. 3 is a schematic cross-sectional view along an AA' direction in fig. 2. With reference to fig. 1 to 3, the display panel includes a substrate 1 and an electrostatic protection structure 2 located on the substrate 1, the electrostatic protection structure 2 is disposed around at least a portion of a display area AA of the display panel, the electrostatic protection structure 2 includes at least two patterned structures, namely a first patterned structure 3 and a second patterned structure 4, the second patterned structure 4 is located on a side of the first patterned structure 3 away from the substrate 1, the first patterned structure 3 and the second patterned structure 4 are respectively disposed on adjacent metal layers, and a dielectric layer 5 is disposed between the first patterned structure 3 and the second patterned structure 4.
Along the direction perpendicular to the display panel, at least one overlapping region b exists between the first patterned structure 3 and the second patterned structure 4, an acute included angle is formed between the extending direction of the first patterned structure 3 in the overlapping region b and the extending direction of the second patterned structure 4, that is, the extending direction of the first patterned structure 3 in the overlapping region b is not parallel or perpendicular to the extending direction of the second patterned structure 4, and the first patterned structure 3 has a concave portion 6 corresponding to the overlapping region b. It should be noted that the overlapped region b mentioned herein means that there is an overlapped portion of the first patterned structure 3 and the second patterned structure 4 in the region, for example, as shown in fig. 2 and 3, there is a portion of the first patterned structure 3 and the second patterned structure 4 overlapped along a direction perpendicular to the display panel in the overlapped region b. In addition, the extending direction of the first patterned structure 3 and the second patterned structure 4 is the overall direction of the traces included in the first patterned structure 3 or the second patterned structure 4, for example, the extending direction of the first patterned structure 3 in fig. 2 is the overall direction of the vertical traces, that is, the vertical direction in fig. 2, and the extending direction of the second patterned structure 4 is the overall direction of the folded trace, for example, the folded trace is split into a plurality of linear traces e, and the extending direction of each linear trace e is the direction of the linear trace e.
Specifically, with reference to fig. 1 to 3, the material forming the electrostatic protection structure 2 is a metal material, that is, the material forming the first patterned structure 3 and the second patterned structure 4 is a metal material, the electrostatic protection structure 2 is disposed around at least a portion of the display area AA of the display panel, and the metal electrostatic protection structure 2 is disposed at the edge of the display panel, so that static electricity is easily accumulated at the position of the electrostatic protection structure 2, thereby reducing the probability of static electricity entering the display panel, forming an electrostatic protection barrier at the edge of the display panel, and enhancing the antistatic capability of the display panel.
In addition, by respectively arranging the first patterned structure 3 and the second patterned structure 4 on adjacent metal layers, a dielectric layer 5 is arranged between the first patterned structure 3 and the second patterned structure 4, at least one overlapping region b exists between the first patterned structure 3 and the second patterned structure 4 in the electrostatic discharge structure along a direction perpendicular to the display panel, and the first patterned structure 3 positioned below the display panel is provided with a concave portion 6 corresponding to the overlapping region b, so that a part of the dielectric layer 5 positioned between the first patterned structure 3 and the second patterned structure 4 is positioned in the concave portion 6, because in the overlapping region b, an acute included angle is formed between the extending direction of the first patterned structure 3 and the extending direction of the second patterned structure 4, namely, the extending direction of the first patterned structure 3 is not parallel to and perpendicular to the extending direction of the second patterned structure 4, according to the process characteristics of the semiconductor film layer, the thickness of the dielectric layer 5 formed on the side wall of the concave part 6 is smaller than the thickness of the dielectric layer 5 formed at other positions, and is also smaller than the thickness of the dielectric layer 5 on the side wall of the concave part 6 when the first patterned structure 3 and the second patterned structure 4 are arranged in parallel or vertically, so that the thickness of the dielectric layer 5 on the side wall of the concave part 6 is reduced while static electricity is accumulated on the first patterned structure 3 and the second patterned structure 4 at the edge position of the display panel, the static electricity is easily released through the thinner dielectric layer 51 on the side wall of the concave part 6, the static electricity releasing capability of the dielectric layer 5 between the first patterned structure 3 and the second patterned structure 4 is optimized, the probability that the static electricity enters the display area AA inside the display panel is further reduced, and the damage of the inorganic dielectric layer in the display area AA caused by the static electricity is improved, the working performance of the light-emitting elements in the display area AA of the display panel and the electronic components corresponding to the light-emitting elements are affected, and the display effect of the display panel is further affected, even the display panel cannot normally display.
Exemplarily, as shown in fig. 3, the concave portion 6 formed by the first patterned structure 3 and corresponding to the overlap region b may be configured as a through hole structure, that is, the first patterned structure 3 includes two independent structures without contact, and a concave through hole structure is formed between the two independent structures, because an acute angle is formed between the extending direction of the first patterned structure 3 and the extending direction of the second patterned structure 4 in the overlap region b, the thickness of the dielectric layer 5 on the sidewall of the through hole structure is reduced, static electricity is easily released through the thinner dielectric layer 51 on the sidewall of the through hole structure, and the probability of static electricity entering the display area AA inside the display panel is further reduced.
For example, as shown in fig. 4, the concave portion 6 corresponding to the overlapping region b formed by the first patterned structure 3 is configured as a groove structure, that is, the first patterned structure 3 is formed as an etched groove structure on the complete structure, and the groove structure has a sidewall and a bottom, and also because an acute included angle is formed between the extending direction of the first patterned structure 3 and the extending direction of the second patterned structure 4 in the overlapping region b, the thickness of the dielectric layer 5 on the sidewall of the groove structure is reduced, static electricity is easily released through the thinner dielectric layer 51 on the sidewall of the groove structure, and the probability of static electricity entering the display area AA inside the display panel is further reduced. It should be noted that the electrostatic protection structure 2 is disposed around at least a portion of the display area AA of the display panel, and the electrostatic protection structure 2 includes at least two patterned structures, namely, the first patterned structure 3 and the second patterned structure 4, so that the first patterned structure 3 is disposed around at least a portion of the display area AA of the display panel, and the second patterned structure 4 is disposed around at least a portion of the display area AA of the display panel, and specific surrounding areas of the first patterned structure 3 and the second patterned structure 4 are not limited, so as to ensure that the first patterned structure 3 and the second patterned structure 4 have an overlapping area b. In addition, fig. 2 only exemplarily shows two layers of patterned structures of the first patterned structure 3 and the second patterned structure 4 in the electrostatic discharge structure, and the electrostatic discharge structure may be arranged to include more layers of patterned structures, so that the electrostatic protection structure 2 forms a combination of a plurality of groups of patterned structures similar to the arrangement manner of the first patterned structure 3 and the second patterned structure 4.
Optionally, with reference to fig. 1 to fig. 3, the first patterned structure 3 includes at least two parallel traces 7 arranged at intervals, so that the first patterned structure 3 can be formed by using a simpler structure, and the first patterned structure 3 forms a concave portion 6 corresponding to the overlapping region b, for example, the concave portion 6 of the through hole structure is formed, thereby reducing the thickness of the dielectric layer 5 on the sidewall of the concave portion 6, and static electricity is easily released through the thinner dielectric layer 51 on the sidewall of the concave portion 6, thereby further reducing the probability that static electricity enters the display area AA inside the display panel. Illustratively, similarly to the structure shown in fig. 4, the thickness of the dielectric layer 5 on the sidewall of the recess 6 can also be reduced by etching a groove structure on the film layer structure where the complete first patterned structure is located, so that the first patterned structure 3 has the independent structures 71 arranged at intervals, and forming the recess 6 of the groove structure.
Alternatively, the second patterned structure 4 may include a meander-line-shaped trace, such that the first patterned structure and the second patterned structure form a plurality of overlapping regions b arranged along the extending direction of the parallel trace 7, increasing the number of overlapping regions b where the second patterned structure 4 and the first patterned structure 3 exist, each overlapping region b has an acute included angle between the extending direction of the first patterned structure 3 and the extending direction of the second patterned structure 4, thereby increasing the number of positions in the display panel where the thinner dielectric layer 51 can be used for electrostatic discharge, further reducing the probability of electrostatic entering the display area AA in the display panel, improving the phenomenon that the inorganic dielectric layer in the display area AA is damaged by the electrostatic, affecting the working performance of the light-emitting elements in the display area AA of the display panel and the electronic components corresponding to the light-emitting elements, thereby affecting the display effect of the display panel and even causing the problem that the display panel can not display normally.
It should be noted that fig. 2 only exemplarily shows that the first patterned structure 3 includes two parallel traces 7 disposed at intervals, or the first patterned structure 3 may also include more parallel traces 7 disposed at intervals, and a plurality of overlapping regions b exist between the folded trace traces and all the parallel traces 7, so as to further increase the number of the concave portions 6 formed by the first patterned structure 3, and further optimize the electrostatic protection effect of the display panel, and the number of the parallel traces 7 included in the first patterned structure 3 may be set according to the requirement for the antistatic capability of the display panel and the requirement for the frame width of the display panel.
Optionally, with reference to fig. 3 and 4, the first patterned structure 3 includes a surface 30 far from the substrate 1, and the thickness d of the dielectric layer 5 on the surface 30 is greater than or equal to 100nm and less than or equal to 490 nm. Specifically, with reference to fig. 1 to 4, in order to further reduce the thickness of the dielectric layer 5 between the first patterned structure 3 and the second patterned structure 4, the dielectric layer 5 may be further etched after the whole dielectric layer 5 is formed by using a mask, and the thickness d of the dielectric layer 5 on the surface 30 is set to be greater than or equal to 100nm and less than or equal to 490nm, which is beneficial to reducing the thickness d of the dielectric layer 5 on the surface 30 on the premise of meeting the minimum film required by the semiconductor film manufacturing process, and the part of the dielectric layer 5 is also located in the overlapping region b between the first patterned structure 3 and the second patterned structure 4, thereby further improving the electrostatic discharge capability of the dielectric layer 5 and reducing the probability of static electricity entering the display area AA inside the display panel.
Fig. 5 is a schematic top view of another display panel according to an embodiment of the present invention, and fig. 6 is a schematic cross-sectional view of the display panel according to the embodiment of the present invention. With reference to fig. 5 and 6, a display area AA of the display panel is provided with a plurality of light emitting elements 8 and pixel driving circuits 9 corresponding to the light emitting elements 8, fig. 5 exemplarily shows one pixel driving circuit 9 as one thin film transistor, the light emitting elements 8 and the pixel driving circuits 9 corresponding to the light emitting elements 8 are located in a space formed by crossing scan lines 80 and data lines 90, the pixel driving circuit 9 includes a plurality of thin film transistors T and at least one capacitor structure C (not shown in fig. 5), the first patterned structure 3 is fabricated on the same layer as a gate G of the thin film transistor T, and the second patterned structure 4 and an upper electrode plate 10 of the capacitor structure C are fabricated on the same layer.
Specifically, with reference to fig. 5 and 6, the display area AA of the display panel is provided with a plurality of light emitting elements 8 and pixel driving circuits 9 arranged corresponding to the light emitting elements 8, the light emitting elements 8 may be, for example, organic light emitting elements 8, the pixel driving circuits 9 are used for supplying driving currents to the corresponding light emitting elements 8, the light emitting elements 8 emit light in response to the driving currents, the pixel driving circuits 9 include a plurality of thin film transistors T and at least one capacitor structure C, the pixel driving circuits 9 may be arranged to include at least two thin film transistors T and one capacitor structure C, that is, the pixel driving circuits 9 constitute a 2T1C structure, and the number of the thin film transistors T and the capacitor structures C included in the pixel driving circuits 9 is not particularly limited in the embodiments of the present invention.
Specifically, the first patterned structure 3 and the gate G of the thin film transistor T may be fabricated in the same layer, the second patterned structure 4 and the upper plate 10 of the capacitor structure C may be fabricated in the same layer, the lower plate 101 of the capacitor structure C and the gate G of the thin film transistor T may be fabricated in the same layer, and since the dielectric layer 5 between the gate G of the thin film transistor T and the upper plate 10 of the capacitor structure C is thinner than other dielectric layers in the display area AA, the first patterned structure 3 and the gate G of the thin film transistor T may be fabricated in the same layer, and the second patterned structure 4 and the upper plate 10 of the capacitor structure C may be fabricated in the same layer, so that the dielectric layer 5 between the first patterned structure 3 and the second patterned structure 4 and the dielectric layer 5 between the gate G of the thin film transistor T and the upper plate 10 of the capacitor structure C may be fabricated simultaneously, that the dielectric layer 5 between the lower plate 101 and the upper plate 10 of the capacitor structure C may be fabricated, the thickness of the dielectric layer 5 between the first patterned structure 3 and the second patterned structure 4 is reduced, the electrostatic discharge capability of the dielectric layer 5 between the first patterned structure 3 and the second patterned structure 4 is improved, the probability of static electricity entering the display area AA inside the display panel is reduced, and the problem that the working performance of the light-emitting element 8 in the display area AA of the display panel and the working performance of the electronic component corresponding to the light-emitting element 8 are affected by the static electricity is solved.
Alternatively, in conjunction with fig. 1 to 6, the display area AA includes a first side 11 and a second side 12 oppositely disposed along a first direction XX ', and a third side 13 and a fourth side 14 oppositely disposed along a second direction YY', the electrostatic protection structure 2 is disposed around at least the first side 11, the second side 12 and the third side 13, and the first direction XX 'intersects with the second direction YY'. Specifically, the first side 11 and the second side 12 may be the left and right sides of the display area AA, the third side 13 and the fourth side 14 are the upper and lower sides of the display area AA, the electrostatic protection structure 2 is arranged to surround at least the first side 11, the second side 12 and the third side 13, that is, the electrostatic protection structure 2 is arranged to be at least located at the left and right side frames and the upper side frame of the non-display area AA, and the electrostatic protection structure 2 surrounds the left and right upper corners of the display area AA, the metal electrostatic protection structure 2 enables static electricity to be easily accumulated at the position of the electrostatic protection structure 2, so that the antistatic capabilities of the left and right side frames and the upper side frame of the display panel are enhanced, the antistatic capabilities of the left and right upper corners of the display panel are also enhanced, the probability of static electricity entering the inside of the display panel is reduced, an electrostatic protection barrier is formed at the edge of the display panel.
Optionally, in conjunction with fig. 1-6, the electrostatic protection structure 2 is disposed around at least a portion of the fourth side 14. Specifically, the fourth edge 14 may be the lower edge of the display area AA, and the electrostatic protection structure 2 may be disposed on at least a portion of the lower edge of the non-display area AA while the electrostatic protection structure 2 is disposed on the left and right side frames and the upper side frame of the non-display area AA, fig. 1 and 5 exemplarily set the portion of the lower edge of the static protection structure located on the non-display area AA and the electrostatic protection structure 2 surrounding the lower left corner and the lower right corner of the display area AA, and may also set the electrostatic protection structure 2 surrounding the fourth edge 14 of the display area AA as shown in fig. 7, that is, the electrostatic protection structure 2 is configured to form a ring-shaped structure in the non-display area AA of the display panel, and the metal electrostatic protection structure 2 facilitates static electricity accumulation at the position of the electrostatic protection structure 2, so as to enhance the antistatic capability of the left and right side frames and the four corners of the upper and lower side frames of the display panel, the probability of static electricity entering the display panel is reduced, the static protection barrier is formed at the edge of the display panel, and the antistatic capacity of the display panel is enhanced.
Alternatively, in conjunction with fig. 1 to 7, the electrostatic protection structure 2 may be set to switch in an electrical signal of constant potential. In particular, an electrical signal of constant potential, for example, of constant high potential or constant ground potential, may be applied to the electrostatic protection structure 2. Illustratively, as shown in fig. 1, 5 and 7, the esd structure 2 may be electrically connected to a driving chip (not shown in the drawings), the driving chip provides an electrical signal with a constant potential to the esd structure 2, for example, the esd structure 2 may be respectively connected to two ports 16 on the left and right of the driving chip at the lower frame of the display panel, the driving chip provides a signal with a constant potential to the esd structure 2 through the two ports 16, for example, a signal with a constant potential such as ELVDD, ELVSS, VGH, VGL or GND may be output to the esd structure 2, where ELVDD and ELVSS respectively provide a high-low level power signal to the light emitting elements 8 in the display area AA of the display panel, VGH and VGL respectively provide a high-low level power signal to the gate driving circuit or the enable circuit in the non-display area AA of the display panel, GND is a ground signal, the esd structure 2 passes through the electrical signal with a constant potential, the antistatic ability of the electrostatic protection structure 2 is further enhanced, and the probability of static electricity entering the display panel is reduced.
Alternatively, at least one electrical contact point N electrically connected to the constant potential signal line 15 may be disposed on the electrostatic protection structure 2, the constant potential signal line 15 is disposed around at least a portion of the display area AA of the display panel, as exemplified by the electrostatic protection structure 2 in the structure shown in fig. 1, fig. 8 is a schematic view of a top view structure of another display panel provided in the embodiment of the present invention, as shown in fig. 8, at least one electrical contact point N electrically connected to the constant potential signal line 15 is disposed on the electrostatic protection structure 2, here, there are a plurality of electrical contact points N electrically connected to the constant potential signal line 15 exemplarily disposed on the electrostatic protection structure 2, the number and the position of the electrical contact points N are not particularly limited, the constant potential signal line 15 is disposed around at least a portion of the display area AA of the display panel, the constant potential signal line 15 may be, for example, a power line for transmitting ELVDD signals or ELVSS signals, the electric signal with constant potential is introduced into the electrostatic protection structure 2, so that the antistatic capacity of the electrostatic protection structure 2 is further enhanced, and the probability of static electricity entering the display panel is reduced.
It should be noted that the electrostatic protection structure 2 includes multiple layers of patterned structures, each layer of patterned structure on the electrostatic protection structure 2 may be set to access an electrical signal with a constant potential, one layer of patterned structure may be set to have an access point for the electrical signal with the constant potential, and the other layers of patterned structures and the patterned structures with the access points are electrically connected through vias, so as to transmit the electrical signal with the constant potential to all the patterned structures.
Fig. 9 is a schematic top view structure diagram of a display device according to an embodiment of the present invention, and as shown in fig. 9, a display device 200 includes the display panel 190 according to the above embodiment, so that the display device 200 according to the embodiment of the present invention has the beneficial effects of the above embodiment, and is not repeated herein. For example, the display device 200 may be an oled (organic Light Emitting diode) display device, a Micro LED display device, or a liquid crystal display device, and the display device may include a mobile phone, a computer, and other terminal devices.
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 illustrated 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, comprising:
a substrate;
the electrostatic protection structure is positioned on the substrate and arranged around at least part of the display area of the display panel, the electrostatic protection structure comprises at least two layers of patterning structures including a first patterning structure and a second patterning structure, the second patterning structure is positioned on one side, away from the substrate, of the first patterning structure, the first patterning structure and the second patterning structure are respectively arranged on adjacent metal layers, and a dielectric layer is arranged between the first patterning structure and the second patterning structure;
along the direction perpendicular to the display panel, at least one overlapping area exists between the first patterned structure and the second patterned structure, an acute included angle is formed between the extending direction of the first patterned structure and the extending direction of the second patterned structure in the overlapping area, and the first patterned structure is provided with a concave portion corresponding to the overlapping area.
2. The display panel according to claim 1, wherein the first patterned structure comprises at least two spaced-apart traces;
preferably, the first patterned structure includes at least two parallel traces arranged at intervals.
3. The display panel of claim 1, wherein the second patterned structure comprises a meander-line trace.
4. The display panel according to claim 1, wherein the first patterned structure comprises a surface far from the substrate, and the dielectric layer on the surface has a thickness of 100nm or more and 490nm or less.
5. The display panel according to claim 1, wherein a display region of the display panel is provided with a plurality of light emitting elements and a pixel driving circuit provided corresponding to the light emitting elements, the pixel driving circuit including a plurality of thin film transistors and at least one capacitor structure;
the first patterning structure and the grid electrode of the thin film transistor are manufactured in the same layer, and the second patterning structure and the upper electrode plate of the capacitor structure are manufactured in the same layer.
6. The display panel according to claim 1, wherein the display area comprises a first side and a second side oppositely disposed along a first direction and a third side and a fourth side oppositely disposed along a second direction, and the electrostatic protection structure is disposed around at least the first side, the second side, and the third side; wherein the first direction intersects the second direction.
7. The display panel of claim 6, wherein the electrostatic protection structure is disposed around at least a portion of the fourth edge.
8. The display panel of claim 7, wherein the electrostatic protection structure is switched in an electrical signal of constant potential;
preferably, the electrostatic protection structure is electrically connected to a driving chip, and the driving chip provides the electric signal of the constant potential to the electrostatic protection structure.
9. The display panel of claim 8, wherein the electrostatic discharge protection structure is provided with at least one electrical contact electrically connected to a constant potential signal line disposed around at least a portion of the display area of the display panel.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
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