CN115148116A - Display panel and display device - Google Patents
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- CN115148116A CN115148116A CN202210753609.0A CN202210753609A CN115148116A CN 115148116 A CN115148116 A CN 115148116A CN 202210753609 A CN202210753609 A CN 202210753609A CN 115148116 A CN115148116 A CN 115148116A
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- 239000002184 metal Substances 0.000 claims description 60
- 239000000758 substrate Substances 0.000 claims description 16
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 28
- 239000010410 layer Substances 0.000 description 52
- 238000010586 diagram Methods 0.000 description 18
- 230000005540 biological transmission Effects 0.000 description 8
- 238000013461 design Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000002356 single layer Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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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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- 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
- G09F9/335—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 being organic light emitting diodes [OLED]
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Abstract
The invention discloses a display panel and a display device. The display panel includes: a display area and a non-display area; the non-display area includes a first lead and a driving circuit unit; the display area comprises a first side edge, a second side edge and a plurality of first reference voltage lines, wherein the first side edge and the second side edge are adjacent to each other, and the second side edge is close to the driving circuit unit; the first lead is close to the first side edge, the first lead extends along the direction of the first side edge and is electrically connected with the driving circuit unit, and the first reference voltage line extends from the display area to the first side edge and is electrically connected with the first lead. In the invention, the left frame and the right frame of the non-display area adopt the first lead wire to transmit the reference voltage signal, so that excessive space of the left frame and the right frame is not required to be occupied, and the narrow frame is favorably realized.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a display device.
Background
With the rapid development of display technology, people have higher and higher requirements on the performance and appearance of display devices. For example, a screen-to-very high full-face screen occupies almost a large percentage of the consumer market. Therefore, the frame occupation ratio of the display device is further reduced, and the frame occupation ratio is always a hot development direction of the current display screen.
In the current manufacturing process of display panels, how to reduce the frame occupation ratio of the display panels becomes a problem to be solved urgently.
Disclosure of Invention
The invention provides a display panel and a display device, which are used for realizing a narrow frame.
According to an aspect of the present invention, there is provided a display panel including: a display area and a non-display area;
the non-display area includes a first lead and a driving circuit unit;
the display area comprises a first side edge, a second side edge and a plurality of first reference voltage lines, wherein the first side edge and the second side edge are adjacent to each other, and the second side edge is close to the driving circuit unit;
the first lead is close to the first side edge, extends along the direction of the first side edge and is electrically connected with the driving circuit unit, and the first reference voltage line extends from the display area to the first side edge and is electrically connected with the first lead.
According to another aspect of the present invention, there is provided a display device including the display panel as described above.
In the invention, the non-display area comprises a first lead and a driving circuit unit which are electrically connected; the display area comprises a plurality of first reference voltage lines, wherein the first reference voltage lines extend from the display area to the first side edge and are electrically connected with the first leads; the driving circuit unit provides a first reference voltage signal to the first lead line and then to the display area through the first reference voltage line, so that the pixels of the display area perform display according to the first reference voltage signal and other control signals. In the invention, the left frame and the right frame of the non-display area adopt the first lead wire to transmit the reference voltage signal, so that excessive space of the left frame and the right frame is not required to be occupied, and the narrow frame is favorably realized.
It should be understood that the statements in this section are not intended to identify key or critical features of the embodiments of the present invention, nor are they intended to limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another display panel provided in an embodiment of the invention;
FIG. 3 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 6 isbase:Sub>A cross-sectional view taken along A-A' of FIG. 5;
FIG. 7 is a cross-sectional view taken along line B-B' of FIG. 5;
FIG. 8 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 9 is a schematic diagram illustrating a display panel according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of another display panel provided in an embodiment of the invention;
FIG. 11 is a cross-sectional view taken along C-C' of FIG. 10;
FIG. 12 is a cross-sectional view taken along line D-D' of FIG. 10;
FIG. 13 is a cross-sectional view taken along E-E' of FIG. 10;
FIG. 14 is a diagram of another display panel according to an embodiment of the present invention;
FIG. 15 is a schematic diagram of another display panel provided in an embodiment of the invention;
fig. 16 is a schematic diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic diagram of a display panel according to an embodiment of the present invention, and the embodiment is applicable to any display panel, such as an organic light emitting display panel and a micro light emitting diode display panel, but not limited thereto. As shown in fig. 1, the display panel includes: a display area 11 and a non-display area 12; the non-display area 12 includes a first lead 13 and a driving circuit unit 14; the display area 11 comprises a first side 15 and a second side 16 which are adjacent and a plurality of first reference voltage lines 17, wherein the second side 16 is close to the driving circuit unit 14; the first lead 13 is close to the first side 15, the first lead 13 extends along the direction of the first side 15 and is electrically connected to the driving circuit unit 14, and the first reference voltage line 17 extends from the display area 11 to the first side 15 and is electrically connected to the first lead 13.
In this embodiment, the display area 11 of the display panel is used for displaying, and the display area 11 includes a first side 15 and a second side 16 adjacent to each other. It can be understood that the side of the display area 11 is not a visible line segment actually existing in the display panel, the display area 11 includes a plurality of pixels, and an outer edge of a circle of outermost pixels of the display area 11 is connected to form a virtual shape, where the virtual shape is defined as an area boundary of the display area 11, and then one side of the virtual shape is a side of the display area 11. Fig. 2 is a schematic view of another display panel according to an embodiment of the invention, and as shown in fig. 2, the optional display area 11 includes a plurality of pixels 18 arranged in an array, the outer edges of a circle of outermost pixels 18 of the display area 11 may be connected to form a virtual rectangle 19, and one side of the virtual rectangle 19 may be defined as one side of the display area 11. It should be noted that the pixel arrangement manner in the display panel is not limited to the array arrangement manner, and may also be other pixel arrangement manners, which are not described herein again; the virtual shape formed by the display area may be different according to the arrangement of the pixels in the display panel, for example, the virtual shape formed by the display area may be a quadrangle, a polygon, a circle, or the like, but is not limited thereto.
The non-display area 12 of the display panel is provided with circuit structures such as peripheral circuits for driving the pixels of the display area 11 to display. The peripheral circuit structure of the non-display area 12 includes at least a first lead 13 and a driving circuit unit 14. As shown in fig. 1, the optional driving circuit unit 14 is disposed in the non-display area 12 outside the lower side of the display area 11, and then the second side 16 is close to the driving circuit unit 14, that is, the second side 16 of the display area 11 is the lower side of the display area 11, the first side 15 of the display area 11 is adjacent to the second side 16, and then the first side 15 of the display area 11 is the left (right) side of the display area 11. Wherein the first lead 13 is close to the first side 15, i.e. the first lead 13 is disposed in the non-display region 12 outside the left side of the display region 11. The first lead 13 extends in the direction of the first side 15 and is electrically connected to the driving circuit unit 14, and the driving circuit unit 14 supplies an electrical signal to the first lead 13.
The pixels include pixel circuits and light emitting elements, and the peripheral circuit structure of the non-display region 12 is electrically connected to the pixel circuits of the display region 11 for driving the pixel circuits to operate so that the light emitting elements of the display region 11 perform display. It is to be understood that the pixel circuit includes a first reference voltage terminal, the display region 11 includes a plurality of first reference voltage lines 17, one first reference voltage line 17 electrically connects the first reference voltage terminals of the plurality of pixel circuits and supplies a first reference voltage signal to the plurality of pixel circuits, the plurality of first reference voltage lines 17 supplies the first reference voltage signal to all the pixel circuits of the display region 11, and the pixel circuits drive the light emitting elements to display according to the first reference voltage signal and other control signals. The first reference voltage line 17 extends from the display region 11 to the first side 15 and is electrically connected to the first lead 13, and then the driving circuit unit 14 supplies the first reference voltage signal to the first lead 13 and then to the corresponding electrically connected plurality of pixel circuits through the first reference voltage line 17.
Fig. 3 is a schematic diagram of another display panel according to an embodiment of the invention, as shown in fig. 3, the first lead 13 is optionally wrapped around the display area 11, and both ends of the first lead 13 are electrically connected to the driving circuit unit 14, so that both ends of the first reference voltage line 17 of the display area 11 can respectively extend to the non-display area 12 and are electrically connected to the first lead 13. The driving circuit unit 14 supplies a first reference voltage signal to a plurality of first reference voltage lines 17 through a first lead 13. It should be noted that the number of the first reference voltage lines is related to the number of pixels in the display area, for example, the first reference voltage lines are electrically connected to the first reference voltage terminals of a row of pixels, and then the number of the first reference voltage lines is equal to the number of rows of pixels in the display area; but is not limited thereto, for example, the first reference voltage line may be connected to the first reference voltage terminals of the two rows of pixels, and the like.
The optional display area 11 further includes a plurality of first connection lines, and the first reference voltage line 17 intersects and electrically contacts the first connection lines. Fig. 4 is a schematic diagram of another display panel according to an embodiment of the present invention, and as shown in fig. 4, the display area 11 further includes a plurality of first connection lines 20, the first connection lines 20 intersect and electrically contact the first reference voltage lines 17, and then the plurality of first reference voltage lines 17 and the plurality of first connection lines 20 intersect and electrically contact to form a metal mesh structure in the display area 11. A mesh structure formed by the intersection of the plurality of first reference voltage lines 17 and the plurality of first connection lines 20 may be formed using a single metal layer or a plurality of metal layers. It should be noted that the number of the first reference voltage lines and the number of the first connecting lines are related to the number of pixels in the display area, for example, an intersecting node of one first reference voltage line and one first connecting line corresponds to a first reference voltage end electrically connected to one pixel, so that the number of the first reference voltage lines is equal to the number of pixel rows in the display area, and the number of the first connecting lines is equal to the number of pixel columns in the display area; but is not limited thereto.
In the invention, the non-display area comprises a first lead and a driving circuit unit which are electrically connected; the display area comprises a plurality of first reference voltage lines, wherein the first reference voltage lines extend from the display area to the first side edge and are electrically connected with the first leads; the driving circuit unit provides a first reference voltage signal to the first lead line and then to the display area through the first reference voltage line, so that the pixels of the display area perform display according to the first reference voltage signal and other control signals. In the invention, the left frame and the right frame of the non-display area adopt the first lead wire to transmit the reference voltage signal, so that excessive space of the left frame and the right frame is not required to be occupied, and the narrow frame is favorably realized.
The selectable non-display area further comprises a second lead wire, the second lead wire is insulated from the first lead wire, the second lead wire is located between the driving circuit unit and the second side edge, and the second lead wire is electrically connected with the driving circuit unit. The selectable display area further comprises a plurality of second reference voltage lines, and the second reference voltage lines are intersected and insulated with the first reference voltage lines in the direction vertical to the display panel; the second reference voltage line extends from the display area to the second side and is electrically connected to the second lead line. The selectable driving circuit unit provides a first reference voltage to the first lead, and the driving circuit unit provides a second reference voltage to the second lead, the first reference voltage being different from the second reference voltage.
Fig. 5 isbase:Sub>A schematic view of another display panel according to an embodiment of the present invention, fig. 6 isbase:Sub>A sectional view taken alongbase:Sub>A-base:Sub>A 'of fig. 5, and fig. 7 isbase:Sub>A sectional view taken along B-B' of fig. 5. As shown in fig. 5, the peripheral circuit structure of the non-display area 12 further includes a second lead 21, the second lead 21 being located between the driving circuit unit 14 and the second side 16, i.e., the second lead 21 is disposed in the non-display area 12 outside the lower side of the display area 11. The second lead 21 extends in the direction of the second side 16 and is electrically connected to the driving circuit unit 14, and the driving circuit unit 14 supplies an electrical signal to the second lead 21. The second lead 21 is insulated from the first lead 13 in a direction perpendicular to the display panel, i.e., with an insulating medium therebetween.
It is to be understood that the pixel circuits include a second reference voltage terminal, the display region 11 includes a plurality of second reference voltage lines 22, one second reference voltage line 22 electrically connects the second reference voltage terminals of the plurality of pixel circuits and supplies a second reference voltage signal to the plurality of pixel circuits, the plurality of second reference voltage lines 22 supply the second reference voltage signal to all the pixel circuits of the display region 11, and the pixel circuits drive the light emitting elements to display according to the second reference voltage signal and other control signals. The second reference voltage line 22 extends from the display region 11 to the second side 16 and is electrically connected to the second lead line 21, and then the driving circuit unit 14 provides the second reference voltage signal to the second lead line 21 and then to the corresponding electrically connected plurality of pixel circuits through the second reference voltage line 22.
As shown in fig. 6 and 7, in the direction Z perpendicular to the display panel, the second reference voltage line 22 intersects and is insulated from the first reference voltage line 17, that is, the second reference voltage line 22 is located in a different layer from the first reference voltage line 17, and at least one insulating dielectric layer is spaced between the second reference voltage line 22 and the first reference voltage line 17. It should be noted that the number of the second reference voltage lines is related to the number of pixels in the display area, for example, the second reference voltage lines are electrically connected to the second reference voltage terminals of a column of pixels, and then the number of the second reference voltage lines is equal to the number of columns of pixels in the display area; but is not limited thereto, for example, the second reference voltage line may be connected to the second reference voltage terminals of two columns of pixels, etc.
As described above, the second reference voltage signal may be alternatively transferred by the plurality of second reference voltage lines 22 in the display area 11 as shown in fig. 5. For the transmission manner of the first reference voltage signal in the same display panel, the transmission of the first reference voltage signal by the plurality of first reference voltage lines 17 in the display area 11 shown in fig. 3 can be selected; the first reference voltage signal may also be transmitted by a metal mesh structure formed by intersecting a plurality of first reference voltage lines 17 and a plurality of first connection lines 20 in the display area 11 as shown in fig. 4.
In the present embodiment, the non-display region 12 includes the insulated first and second lead lines 13 and 21; the first lead 13 is located at the left and right frame positions of the display area 11, and the first lead 13 is led into the first reference voltage line 17 of the display area 11 from the left and right sides of the display area 11; the second lead wire 21 and the driving circuit unit 14 are located at a lower frame position of the display area 11, and the second lead wire 21 is led from the lower side of the display area 11 to the second reference voltage line 22 of the display area 11. The first lead wire 13 and the second lead wire 21 are located on different sides of the display area 11, wherein only the first lead wire 13 is led into the first reference voltage wire 17 of the display area 11 from the left and right sides of the display area 11, so that the space of the left and right frames can be saved, and the narrow frame can be realized.
The selectable display area further includes a plurality of second connection lines, and the second reference voltage line intersects and electrically contacts the second connection lines. Fig. 8 is a schematic diagram of another display panel according to an embodiment of the present invention, and as shown in fig. 8, the display area 11 further includes a plurality of second connection lines 23, the second connection lines 23 intersect and electrically contact the second reference voltage lines 22, and then the plurality of second reference voltage lines 22 intersect and electrically contact the plurality of second connection lines 23 in the display area 11 to form a metal mesh structure. A mesh structure formed by the intersection of the second reference voltage lines 22 and the second connecting lines 23 may be formed using a single metal layer or a multi-layer metal layer. It should be noted that the number of the second reference voltage lines and the number of the second connecting lines are related to the number of pixels in the display area, for example, an intersecting node of one second reference voltage line and one second connecting line corresponds to a second reference voltage end electrically connected to one pixel, so that the number of the second reference voltage lines is equal to the number of pixel columns in the display area, and the number of the second connecting lines is equal to the number of pixel rows in the display area; but is not limited thereto.
As described above, the second reference voltage signal may be transmitted by a metal mesh structure formed by intersecting the plurality of second reference voltage lines 22 and the plurality of second connecting lines 23 in the display region 11 as shown in fig. 8. For the transmission manner of the first reference voltage signal in the same display panel, the transmission of the first reference voltage signal by the plurality of first reference voltage lines 17 in the display area 11 shown in fig. 3 can be selected; the first reference voltage signal may also be transmitted by a metal mesh structure formed by intersecting a plurality of first reference voltage lines 17 and a plurality of first connection lines 20 in the display area 11 as shown in fig. 4.
The selectable display panel comprises a substrate base plate and a first metal layer on the substrate base plate; the second lead is located in the first metal layer. In this embodiment, the second lead may adopt a single-layer metal routing design, that is, a first metal layer is formed on the substrate, and the first metal layer may be optionally patterned to form the second lead. For the same display panel, the first lead wire can also adopt a single-layer metal routing design, namely, another metal layer laminated with the first metal layer is formed on the substrate, and the metal layer can be selectively patterned to form the first lead wire; in other embodiments, however, the first lead may also adopt a multi-layer metal trace design. At least one insulating layer is arranged between the metal layer of the first lead and the metal layer of the second lead.
The selectable display panel comprises a substrate base plate, and a first metal layer and a second metal layer which are arranged on the substrate base plate in a stacked mode; the second lead comprises a first sub-lead and a second sub-lead which extend in the same direction, the first sub-lead and the second sub-lead are at least partially overlapped in the direction perpendicular to the display panel, the first sub-lead is located in the first metal layer, the second sub-lead is located in the second metal layer, and the first sub-lead and the second sub-lead are electrically connected through the through hole. In this embodiment, the second lead may adopt a double-layer metal routing design.
Fig. 9 is a schematic view illustrating a manufacturing process of a display panel according to an embodiment of the present invention. As shown in fig. 9, a first metal layer 32 is formed on a base substrate 31; the first metal layer 32 may optionally be patterned to form first sub-leads 33; forming an insulating dielectric layer 34 on the first sub-lead 33; forming a via hole 35 penetrating through the film layer in the insulating medium layer 34, wherein the bottom of the via hole 35 extends to the surface of the first sub-lead 33; forming a second metal layer 36 on the insulating dielectric layer 34; the second metal layer 36 may optionally be patterned to form second sub-leads 37. The second lead is composed of the first and second sub-leads 33 and 37 of different layers, the first and second sub-leads 33 and 37 at least partially overlap in the direction Z perpendicular to the display panel, and the first and second sub-leads 33 and 37 are electrically connected through the via 35. For the same display panel, the first lead wire can also adopt a double-layer metal wiring design; in other embodiments, however, the first lead may also be designed with a single layer of metal traces. At least one insulating layer is arranged between the metal layer of the first lead and the metal layer of the second lead.
The selectable non-display area also comprises a second lead, the second lead and the first lead are arranged in a stacked and insulated mode, the second lead is close to the first side edge, and the second lead extends along the direction of the first side edge and is electrically connected with the driving circuit unit; the first lead line and the second lead line at least partially overlap in a direction perpendicular to the display panel. The selectable display area further comprises a plurality of second reference voltage lines insulated from the first reference voltage lines in a direction perpendicular to the display panel; the second reference voltage line extends from the display region to the first side and is electrically connected to the second lead. The selectable driving circuit unit provides a first reference voltage to the first lead, and the driving circuit unit provides a second reference voltage to the second lead, the first reference voltage being different from the second reference voltage.
Fig. 10 is a schematic view of still another display panel according to an embodiment of the present invention, fig. 11 is a sectional view taken along C-C ' of fig. 10, fig. 12 is a sectional view taken along D-D ' of fig. 10, and fig. 13 is a sectional view taken along E-E ' of fig. 10. As shown in fig. 10, the peripheral circuit structure of the non-display area 12 further includes a second lead 24, and the second lead 24 is close to the first side 15, i.e., the second lead 24 is disposed in the non-display area 12 outside the left side of the display area 11. The second lead 24 extends in the direction of the first side 15 and is electrically connected to the driving circuit unit 14, and the driving circuit unit 14 supplies an electrical signal to the second lead 24. As shown in fig. 11, the second lead 24 and the first lead 13 are stacked and insulated in a direction Z perpendicular to the display panel, that is, at least one insulating layer is provided between the two. In the direction Z perpendicular to the display panel, the first lead 13 and the second lead 24 are at least partially overlapped, and although both the two leads are disposed at the left and right frame positions, the overlapping of the two leads can save the space of the left and right frames, and a narrow frame is realized. It is understood that the second lead in fig. 10 and fig. 5 only differ in location, but the same manufacturing process and method may be adopted, and are not described in detail herein. In fig. 5, the second lead 21 is located between the second side 16 and the driving circuit unit 14, and the second lead 21 extends in the direction of the second side 16; in fig. 10, the second leads 24 are located in the non-display region 12 outside the first side 15, and the second leads 24 extend along the direction of the first side 15. The parts of fig. 10 that are the same as those of the second lead in fig. 5 are not described again here.
The display region 11 includes a plurality of second reference voltage lines 25, the second reference voltage lines 25 extend from the display region 11 to the first side 15 and are electrically connected to the second lead lines 24, and then the driving circuit unit 14 supplies a second reference voltage signal to the second lead lines 24 and then to the corresponding electrically connected plurality of pixel circuits through the second reference voltage lines 25. As shown in fig. 12 and 13, in the direction Z perpendicular to the display panel, the extending directions of the second reference voltage line 25 and the first reference voltage line 17 are close to each other, and the second reference voltage line 25 is located in a different layer from the first reference voltage line 17, and at least one insulating dielectric layer is interposed therebetween.
As described above, the transfer of the second reference voltage signal may be performed by the plurality of second reference voltage lines 25 in the display area 11 as shown in fig. 10. For the transmission mode of the first reference voltage signal in the same display panel, the transmission of the first reference voltage signal by the plurality of first reference voltage lines 17 in the display area 11 shown in fig. 3 may be selected; the first reference voltage signal may also be transmitted by a metal mesh structure formed by intersecting a plurality of first reference voltage lines 17 and a plurality of first connection lines 20 in the display area 11 as shown in fig. 4.
In this embodiment, the first lead 13 and the second lead 24 are both located at the left and right frames of the display area 11, and the first lead 13 and the second lead 24 are at least partially overlapped in the Z direction, so that the space of the left and right frames is not occupied too much, and a narrow frame can be realized.
Fig. 14 is a schematic diagram of another display panel according to an embodiment of the invention, as shown in fig. 14, the second lead wires 24 are optionally wrapped around the display area 11, and both ends of the second lead wires 24 are electrically connected to the driving circuit unit 14, so that both ends of the second reference voltage line 25 of the display area 11 can respectively extend to the non-display area 12 and are electrically connected to the second lead wires 24.
The selectable display area further includes a plurality of second connection lines, and the second reference voltage line intersects and electrically contacts the second connection lines. Fig. 15 is a schematic diagram of another display panel according to an embodiment of the present invention, as shown in fig. 15, the display area 11 further includes a plurality of second connection lines 26, and the second connection lines 26 intersect and electrically contact the second reference voltage lines 25, so that the plurality of second reference voltage lines 25 and the plurality of second connection lines 26 intersect and electrically contact to form a metal mesh structure in the display area 11, and a single metal layer or a plurality of metal layers may be used to form the mesh structure formed by the plurality of second reference voltage lines 25 and the plurality of second connection lines 26 intersecting.
As described above, the second reference voltage signal may be transmitted by a metal mesh structure formed by intersecting the plurality of second reference voltage lines 25 and the plurality of second connecting lines 26 in the display region 11 as shown in fig. 15. For the transmission manner of the first reference voltage signal in the same display panel, the transmission of the first reference voltage signal by the plurality of first reference voltage lines 17 in the display area 11 shown in fig. 3 can be selected; the first reference voltage signal may also be transmitted by a metal mesh structure formed by intersecting a plurality of first reference voltage lines 17 and a plurality of first connection lines 20 in the display area 11 as shown in fig. 4. The line structure for transmitting the first reference voltage signal and the line structure for transmitting the second reference voltage signal in the display area are both designed by mesh structures, so that load uniformity can be realized.
The selectable display panel comprises a substrate base plate, and a first metal layer and a second metal layer which are stacked on the substrate base plate; the first lead is positioned on the first metal layer; the second lead is located on the second metal layer. In this embodiment, first lead wire and second lead wire all are located display panel's left and right sides frame position department, and first lead wire and second lead wire at least part of overlap in the direction of perpendicular to display panel, so first lead wire and second lead wire all can adopt the design of individual layer metal wiring, and not only manufacturing process is simple, can also reduce panel thickness in the direction of perpendicular to display panel, realizes slimming and narrow frame. For example, a first metal layer is formed on a substrate, and the first metal layer is patterned to form first leads; and forming at least one insulating layer for insulation, then forming a second metal layer, and patterning the second metal layer to form a second lead. However, in other embodiments, one skilled in the art may also adopt a multi-layer metal routing design for the first lead and/or the second lead according to the product requirement, and is not limited thereto.
Based on the same inventive concept, the embodiment of the invention also provides a display device, which comprises the display panel. The display panel may be an organic light emitting display panel or a micro LED display panel, but is not limited thereto. In the display panel provided by this embodiment, the pixel circuits in the display area are designed to use the dual reference voltage signals, and then the line structure including the first reference voltage line is used to transmit the first reference voltage signal in the display area, and the line structure including the second reference voltage line is used to transmit the second reference voltage signal in the display area. The first lead wire electrically connected with the first reference voltage wire and the second lead wire electrically connected with the second reference voltage wire are selected to be positioned on different sides of the display area, so that the space of a left frame and a right frame of the display panel can be saved, and a narrow frame is realized. The first lead wire electrically connected with the first reference voltage wire and the second lead wire electrically connected with the second reference voltage wire are also selected to be positioned at the same side of the display area, but the first lead wire and the second lead wire are at least partially overlapped in the direction perpendicular to the display panel, so that the space of a left frame and a right frame of the display panel can be saved, and the narrow frame is favorably realized.
Fig. 16 is a schematic diagram of a display device according to an embodiment of the present invention, and as shown in fig. 16, the display device may be applied to an electronic device 100 such as a smart phone and a tablet computer. It can be understood that any of the above embodiments and the drawings only describe a partial structure or a partial structure of the display panel, and the display panel further includes other structures, which are not described in detail herein.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present invention may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired results of the technical solution of the present invention can be achieved.
The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A display panel, comprising: a display area and a non-display area;
the non-display area includes a first lead and a driving circuit unit;
the display area comprises a first side edge, a second side edge and a plurality of first reference voltage lines, wherein the first side edge and the second side edge are adjacent to each other, and the second side edge is close to the driving circuit unit;
the first lead is close to the first side edge, the first lead extends along the direction of the first side edge and is electrically connected with the driving circuit unit, and the first reference voltage line extends from the display area to the first side edge and is electrically connected with the first lead.
2. The display panel according to claim 1, wherein the display region further comprises a plurality of first connection lines, and wherein the first reference voltage line intersects with and electrically contacts the first connection lines.
3. The display panel according to claim 1, wherein the non-display region further comprises a second lead, the second lead is insulated from the first lead, the second lead is located between the driving circuit unit and the second side, and the second lead is electrically connected to the driving circuit unit.
4. The display panel according to claim 3, wherein the display region further comprises a plurality of second reference voltage lines intersecting and insulated from the first reference voltage lines in a direction perpendicular to the display panel;
the second reference voltage line extends from the display region to the second side and is electrically connected to the second lead.
5. The display panel according to claim 3, wherein the display panel comprises a substrate base plate and a first metal layer on the substrate base plate;
the second lead is located in the first metal layer.
6. The display panel according to claim 3, wherein the display panel comprises a substrate base plate, and a first metal layer and a second metal layer which are stacked on the substrate base plate;
the second lead comprises a first sub-lead and a second sub-lead which extend in the same direction, the first sub-lead and the second sub-lead are at least partially overlapped in the direction perpendicular to the display panel, the first sub-lead is located in the first metal layer, the second sub-lead is located in the second metal layer, and the first sub-lead and the second sub-lead are electrically connected through a through hole.
7. The display panel according to claim 1, wherein the non-display region further includes a second lead, the second lead and the first lead are stacked and insulated from each other, the second lead is close to the first side, and the second lead extends in a direction of the first side and is electrically connected to the driving circuit unit;
the first and second lead lines at least partially overlap in a direction perpendicular to the display panel.
8. The display panel according to claim 7, wherein the display region further comprises a plurality of second reference voltage lines insulated from the first reference voltage lines in a direction perpendicular to the display panel;
the second reference voltage line extends from the display region to the first side and is electrically connected to the second lead.
9. The display panel according to claim 7, wherein the display panel comprises a substrate base plate, and a first metal layer and a second metal layer stacked on the substrate base plate;
the first lead is located in the first metal layer;
the second lead is located in the second metal layer.
10. The display panel according to claim 4 or 8, wherein the display region further comprises a plurality of second connection lines, and the second reference voltage line intersects and electrically contacts the second connection lines.
11. The display panel according to claim 3 or 7, wherein the driving circuit unit supplies a first reference voltage to the first wiring, and the driving circuit unit supplies a second reference voltage to the second wiring, the first reference voltage being different from the second reference voltage.
12. A display device characterized by comprising the display panel according to any one of claims 1 to 11.
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| CN202210753609.0A CN115148116A (en) | 2022-06-28 | 2022-06-28 | Display panel and display device |
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| CN202210753609.0A CN115148116A (en) | 2022-06-28 | 2022-06-28 | Display panel and display device |
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