CN111161662B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN111161662B CN111161662B CN202010004485.7A CN202010004485A CN111161662B CN 111161662 B CN111161662 B CN 111161662B CN 202010004485 A CN202010004485 A CN 202010004485A CN 111161662 B CN111161662 B CN 111161662B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2007—Display of intermediate tones
- G09G3/2074—Display of intermediate tones using sub-pixels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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Abstract
The embodiment of the invention discloses a display panel and a display device, wherein the display panel comprises a display area, and the display area comprises a first area; a power line extending along a first direction is arranged in the display area, and the first area comprises a pixel circuit array; in the first area, in at least one pixel circuit column from the first column to the last column, at least one first pixel circuit is indirectly connected with a power line directly connected with other pixel circuits in the same row through a capacitance layer; in the row of the first pixel circuit, the power line indirect to the first pixel circuit is connected with at least another power line through a conductive part, the conductive part is located between the row of the first pixel circuit and the adjacent row of the pixel circuit, and the conductive part extends along the second direction. The technical scheme of the invention is beneficial to the transmission voltage drop of the power supply voltage signal, and is further beneficial to improving the display uniformity and improving the display effect.
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 rapid development of display terminals, the requirements of users on screen occupation ratio are higher and higher, so that the comprehensive screen display of the display terminal is concerned more and more in the industry.
The prior art has the problem of poor display effect in areas with dense pixel circuits or areas with irregular pixel arrangement.
Disclosure of Invention
The invention provides a display panel and a display device, which aim to improve the display uniformity and improve the display effect.
In a first aspect, an embodiment of the present invention provides a display panel, including: a display area including a first region;
a power line extending along a first direction is arranged in the display area, and the first area comprises a pixel circuit array; in the first area, in at least one pixel circuit column from the first column to the last column, at least one first pixel circuit is indirectly connected with a power line directly connected with other pixel circuits in the same row through a capacitance layer;
in the row of the first pixel circuit, the power line indirect to the first pixel circuit is at least connected with another power line through a conductive part, the conductive part is positioned between the row of the first pixel circuit and the adjacent pixel circuit row, the conductive part extends along the second direction, and the first direction and the second direction are crossed.
Optionally, the conductive part and the power line are on the same layer.
Optionally, the conductive part and the power line are located in the first metal layer, the display panel further includes a second metal layer and a third metal layer, the capacitor layer includes a first plate layer and a second plate layer, and the first plate layer and the second plate layer are located in the second metal layer and the third metal layer, respectively;
the display panel also comprises a data line positioned on the first metal layer, and the extending direction of the data line is the same as that of the power line; the second metal layer, the third metal layer and the first metal layer are sequentially stacked, and the data line is bridged by the second metal layer or the third metal layer at the position of the conductive part.
Optionally, the first pixel circuit is located between a first pixel circuit and a last pixel circuit of a row of pixel circuits, the first pixel circuit is indirectly connected to a first power line directly connected to the first pixel circuit on the first side and a second power line directly connected to the second pixel circuit on the second side through the capacitor layer, the first power line and the second power line are electrically connected through the conductive portion, and the first side and the second side are two opposite sides of the first pixel circuit.
Optionally, in the row where the first pixel circuit is located, the power lines directly connected to the pixel circuits are all electrically connected through the conductive portion.
Optionally, the first region includes an arc region, and the pixel circuits in the arc region are arranged in a staggered manner; the at least one power line includes a first portion extending in a first direction and a second portion extending in a second direction.
Optionally, the capacitor layer includes a first plate layer and a second plate layer, the power line is disposed on a side of the second plate layer away from the first plate layer, the first pixel circuit is indirectly connected to the power line directly connected to the other pixel circuits in the same row through the second plate layer, and the conductive part is on the same layer as the second plate layer or the first plate layer.
Optionally, the metal layer where the power line is located is made of titanium aluminum titanium, and the metal layer where the capacitor layer is located is made of molybdenum.
Optionally, the display area further includes a first sub-display area and a second sub-display area, and the first area connects the first sub-display area and the second sub-display area; the second sub-display region and the first region include pixel circuits, and the pixel circuits in the first region are electrically connected with the light emitting devices in the first region and the first sub-display region;
preferably, the first sub-display area is a transparent display area.
In a second aspect, an embodiment of the present invention further provides a display device, which includes
An apparatus body having a device region;
the display panel provided by the first aspect covers the device body;
the device area is located below a first sub-display area of the display panel, and a photosensitive device which emits or collects light through the first sub-display area is arranged in the device area.
The embodiment of the invention provides a display panel and a display device, wherein the display panel comprises a display area, and the display area comprises a first area; a power line extending along a first direction is arranged in the display area, and the first area comprises a pixel circuit array; in the first area, in at least one pixel circuit column from the first column to the last column, at least one first pixel circuit is indirectly connected with a power line directly connected with other pixel circuits in the same row through a capacitance layer; in the row of the first pixel circuit, the power line indirect to the first pixel circuit is connected with at least another power line through a conductive part, the conductive part is located between the row of the first pixel circuit and the adjacent row of the pixel circuit, and the conductive part extends along the second direction. The conductive part can divide a part of current on the power line, so that the current flowing through the connecting part for connecting the capacitors in the two pixel circuits in the capacitor layer is reduced, the voltage drop of the power supply voltage signal on the capacitors and the connecting part of the pixel circuits is reduced, the difference between the power supply voltage signal received by the pixel circuit indirectly electrically connected with the power line and the power supply voltage signal actually output by the power supply for providing the power supply voltage signal for the power line is reduced, the display uniformity is improved, and the display effect is improved.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a 2T1C pixel circuit commonly used in the prior art;
fig. 4 is a cross-sectional view of a display panel according to 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 cross-sectional view of another display panel provided in an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 10 is an enlarged view of a portion of FIG. 9;
fig. 11 is a cross-sectional view of another display panel provided in an embodiment of the present invention;
FIG. 12 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 13 is an enlarged view of a portion of FIG. 12;
fig. 14 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 to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings, not all of them.
As described in the background art, the prior art has a problem of poor display effect in an area with dense pixel circuits or an area with irregular pixel arrangement. The inventors have found that the above problems occur because the dense arrangement of the pixel circuits makes the wiring space tight, and some of the pixel circuits cannot be directly electrically connected to the power line. The pixel circuits are arranged in irregular areas, the pixel circuits are usually arranged in a staggered mode, the power line is usually provided with inflection points, the power line comprises a connecting part which is connected with the two inflection points of the same power line, the connecting part is inconsistent with the overall extending direction, the wiring space of the power line is more tense at the moment, and therefore part of the pixel circuits cannot be directly electrically connected with the power line. The pixel circuit usually comprises a storage capacitor, one polar plate of the storage capacitor is usually connected with a power line, the pixel circuit which cannot be directly and electrically connected with the power line is usually connected with a capacitor of the pixel circuit which is directly connected with the power line in the same row through a metal connecting part in a capacitor layer, the metal impedance of a metal layer where the capacitor is located is usually large, the voltage drop of a power voltage signal on the power line on the metal connecting part is large, the difference between a power signal received by the pixel circuit which cannot be directly and electrically connected with the power line and a signal provided by a power supply in a display panel is large, the driving current generated by the pixel circuit is influenced, the uniformity of the display panel is poor, and the display effect is poor.
In view of the above problems, an embodiment of the present invention provides a display panel, where fig. 1 is a schematic structural diagram of a display panel provided in an embodiment of the present invention, fig. 2 is a schematic structural diagram of another display panel provided in an embodiment of the present invention, and referring to fig. 1 and fig. 2, the display panel includes a display area 1a, and the display area 1a includes a first area 11;
a power line 110 extending in a first direction y as a whole is disposed in the display region 1a, and the first region 11 includes a pixel circuit array; in the first region 11, in at least one pixel circuit column from the first column to the last column (in fig. 1, a plurality of pixel circuits arranged along the first direction y are one pixel circuit column), at least one first pixel circuit 121 is indirectly connected with the power line 110 directly connected with other pixel circuits 120 in the same row through the capacitor layer;
in the row of the first pixel circuit 121, the power line 110 indirect to the first pixel circuit 121 is connected to at least another power line 110 through a conductive part 130, the conductive part 130 is located between the row of the first pixel circuit 121 and an adjacent pixel circuit row (in fig. 1, a plurality of pixel circuits arranged along the second direction x are a pixel circuit row), and the conductive part 130 extends along the second direction x; the first direction y and the second direction x intersect.
Specifically, the first region 11 included in the display region 1a may be a region where the pixel circuits 110 are densely arranged, so that a part of the pixel circuits 120 cannot be directly connected to the power line 110, such as a rectangular or rectangular-like display panel (refer to fig. 1) with high pixel circuit density, a circular display region (refer to fig. 2) and an arc-shaped display region where the pixel circuits 120 are arranged in a staggered manner, where the staggered arrangement of the pixel circuits 120 may refer to an arrangement manner where each pixel circuit 120 of a column of the pixel circuits 120 is not completely arranged on a straight line.
Wherein the power line 110 generally extends along the first direction y, may mean that the power line 110 may include a portion whose extending direction does not coincide with the first direction y, but for the same power line 110, the total length of the portion of the power line 110 extending along the first direction y is greater than the total length of the portion of the power line 110 extending along the other direction. For example, for the display panel shown in fig. 2, the power line 110 includes a first portion 111 and a second portion 112, the first portion 111 extending along the first direction y, and the second portion 112 extending along the second direction x.
Specifically, the power supply line 110 is used to transmit a power supply signal to the pixel circuit 120 directly or indirectly connected thereto. Here, the pixel circuit 120 is directly connected to the power line 110, which may mean that an element included in the pixel circuit 120, such as a capacitor or a transistor, is directly connected to the power line 110. The indirect connection of the pixel circuit 120 and the power line 110 may mean that none of the elements, such as a capacitor or a transistor, included in the pixel circuit 120 is directly connected to the power line 110, but the connection to the power line 110 is achieved through a connection structure other than the pixel circuit 120. Fig. 3 is a schematic structural diagram of a 2T1C pixel circuit commonly used in the prior art, referring to fig. 3, the conventional pixel circuit 120 generally includes a capacitor C1, one plate of the capacitor C1 is generally directly electrically connected to the power line 110, the pixel circuit 110 further includes a Data writing transistor T1 and a driving transistor T2, wherein the Data writing transistor T1 is connected to the Data signal input terminal Data and the Scan signal input terminal Scan1, the second transistor is connected to the first power voltage input terminal VDD, and is further connected to the light emitting device, and the light emitting device is connected to the second power voltage input terminal VSS, wherein the power line 110 in this embodiment can provide a power signal to the first power voltage input terminal VDD. Fig. 4 isbase:Sub>A cross-sectional view ofbase:Sub>A display panel according to an embodiment of the present invention, and fig. 4 isbase:Sub>A cross-sectional view taken alongbase:Sub>A-base:Sub>A' of fig. 1, and referring to fig. 1, fig. 2 and fig. 4, in the prior art, forbase:Sub>A pixel circuit 120 indirectly connected tobase:Sub>A power line 110,base:Sub>A connection betweenbase:Sub>A self capacitor C1 andbase:Sub>A capacitor C1 in an adjacent pixel circuit 120 is usually implemented throughbase:Sub>A capacitor layer, so as to implementbase:Sub>A connection between the power line 110 directly connected tobase:Sub>A capacitor of the adjacent pixel circuit 120. With continued reference to fig. 1, 2, and 4, optionally, the display panel includes a connection portion 140 located on the capacitance layer, and the indirect connection of the pixel circuit 120 and the power line 110 is realized by connecting the capacitances in the adjacent pixel circuits 120 through the connection portion 140. The area occupied by the capacitor is large, the power line 110 and the capacitor are usually located in different metal layers of the display panel, and the metal used in the capacitor layer is usually large in resistance, for example, the metal of the capacitor layer may be molybdenum, so that the voltage drop of the power voltage signal transmitted by the power line 110 on the connecting portion 140 of the capacitor layer is large, the difference between the power voltage signal received by the pixel circuit 120 indirectly connected with the power line 110 and the power voltage signal actually output by the power supply providing the power voltage signal for the power line 110 is large, the display uniformity is poor, and the display effect is affected.
With reference to fig. 1, in the display panel provided in this embodiment, for the first pixel circuit 121 indirectly electrically connected to the power line 110, in the row where the first pixel circuit 121 is located, the power line 110 indirectly connected to the first pixel circuit 121 is at least connected to another power line 110 through the conductive portion 130, the conductive portion 130 is located between the row where the first pixel circuit 121 is located and the adjacent pixel circuit row, and the conductive portion 130 extends along the second direction x; the first direction y and the second direction x intersect. The conductive portion 130 can divide a part of the current on the power line 110, so that the current flowing through the connecting portion 140 connecting the capacitors in the two pixel circuits 120 in the capacitor layer is reduced, and further the voltage drop of the power voltage signal on the capacitor layer and the connecting portion 140 of the pixel circuit 120 is reduced, so that the difference between the power voltage signal received by the pixel circuit 120 indirectly electrically connected to the power line 110 and the power voltage signal actually output by the power supply providing the power voltage signal for the power line 110 is reduced, further the display uniformity is improved, and the display effect is improved.
It should be noted that fig. 1 and fig. 2 are only schematic illustrations of a rectangular display panel and a circular display panel, respectively, and for other display panels in which the display area 1a includes a first area 11 having pixels densely arranged so that a part of the pixel circuits 120 cannot be directly connected to the power line 110, the structure of the display panel of this embodiment is also applicable, and the embodiment of the present invention is not limited in detail herein.
The display panel provided by the embodiment comprises a display area, wherein the display area comprises a first area; a power line extending along a first direction is arranged in the display area, and the first area comprises a pixel circuit array; in the first area, in at least one pixel circuit column from the first column to the last column, at least one first pixel circuit is indirectly connected with a power line directly connected with other pixel circuits in the same row through a capacitance layer; in the row of the first pixel circuit, the power line indirect to the first pixel circuit is connected with at least another power line through a conductive part, the conductive part is located between the row of the first pixel circuit and the adjacent row of the pixel circuit, and the conductive part extends along the second direction. The conductive part can divide a part of current on the power line, so that the current flowing through the connecting part for connecting the capacitors in the two pixel circuits in the capacitor layer is reduced, the voltage drop of the power supply voltage signal on the capacitors and the connecting part of the pixel circuits is reduced, the difference between the power supply voltage signal received by the pixel circuit indirectly electrically connected with the power line and the power supply voltage signal actually output by the power supply for providing the power supply voltage signal for the power line is reduced, the display uniformity is improved, and the display effect is improved.
Fig. 5 is a cross-sectional view of another display panel according to an embodiment of the present invention, and fig. 5 is a cross-sectional view taken along a line B-B' corresponding to fig. 1, and referring to fig. 5, on the basis of the above technical solution, optionally, the conductive part 130 is on the same layer as the power line 110.
Specifically, the conductive portion 130 and the power line 110 are disposed on the same layer as the conductive portion 130 and the power line 110, so that the conductive portion 130 and the power line 110 do not need to be connected through a via hole, and a punching process is not needed, so that the display panel process is simple to implement.
Fig. 6 is a cross-sectional view of another display panel provided in an embodiment of the present invention, where fig. 6 is a cross-sectional view taken along C-C' in fig. 1, and with reference to fig. 4, fig. 5 and fig. 6, on the basis of the above technical solutions, optionally, the conductive portion 130 and the power line 110 are located on the first metal layer 210, the display panel further includes a second metal layer 220 and a third metal layer 230, the capacitor layer includes a first plate layer and a second plate layer, and the first plate layer and the second plate layer are located on the second metal layer 220 and the third metal layer 230, respectively;
the display panel further includes a data line 211 located on the first metal layer 210, the data line 211 extends along the first direction y, the second metal layer 220, the third metal layer 230 and the first metal layer 210 are sequentially stacked, the conductive portion 130 is located, and the data line 211 is bridged by the second metal layer 220 or the third metal layer 230.
Specifically, since the power line 110, the data line 211 and the conductive portion 130 are all located on the first metal layer 210, and the data line 211 and the power line 110 extend in the same direction, that is, generally extend along the first direction y, and the conductive portion 130 extends along the second direction x, where the first direction y intersects with the second direction x, the data line 211 needs to be crossed at the location of the conductive portion 130 to prevent display abnormality caused by contact between the data line 211 and the conductive portion 130. The display panel of the embodiment may include a substrate 240, and the second metal layer 220, the third metal layer 230 and the first metal layer 210 are sequentially stacked on one side of the substrate, and at the position of the conductive portion 130, the data line 211 is bridged by the second metal layer 220 and the third metal layer 230, so as to prevent the data line 211 and the conductive portion 130 from contacting to cause a short circuit, and ensure a good display effect.
Fig. 7 is a schematic structural diagram of another display panel according to an embodiment of the present invention, referring to fig. 7, optionally, a first pixel circuit 121 is located between a first pixel circuit 120 and a last pixel circuit 120 of a row of pixel circuits 120, the first pixel circuit 121 is indirectly connected to a first power line 113 directly connected to the first pixel circuit 120 on a first side and a second power line 114 directly connected to the second pixel circuit 120 on a second side through a capacitor layer, the first power line 113 and the second power line 114 are electrically connected through a conductive portion 130, and the first side and the second side are opposite sides of the first pixel circuit 121.
Referring to fig. 7, fig. 7 schematically shows a case where the pixel circuit 120 adjacent to the first side of the first pixel circuit 121 is directly connected to the power line 110, and the pixel circuit 120 adjacent to the second side of the first pixel circuit 121 is directly connected to the power line 110, the first pixel circuit 121 is electrically connected to the first power line 113 directly connected to the pixel circuit 120 adjacent to the first side through the capacitor layer, and the first pixel circuit 121 is electrically connected to the second power line 114 directly connected to the pixel circuit 120 adjacent to the second side through the capacitor layer, the conductive part 130 is connected to the first power line 113 and the second power line 114, so that the conductive part 130 is connected in parallel to the capacitor layer connecting the first power line 113 and the second power line 114, and thus a shunting effect can be achieved, that a current portion passing through the capacitor layer connecting part 140 is shunted to the conductive part 130 in this embodiment when the conductive part 130 is not provided, so that a current flowing through the capacitor layer connecting part 140 is reduced, and a voltage drop of the power voltage signal on the capacitor connecting part 140 of the pixel circuit 120 is reduced, so that the power voltage signal received by the pixel circuit 120 indirectly electrically connected to the power line 110 is uniform with the power line, and the power line 110 is provided, thereby improving a display effect of reducing a voltage difference.
Moreover, when the first pixel circuit 121 is not located in the first row and the last row in the first region 11, the first conductive part 130 may be disposed in the row where the first pixel circuit 121 is located and the adjacent rows on both sides, so as to increase the shunt branch, further reduce the current flowing through the capacitor layer connecting part 140, further reduce the voltage drop of the power voltage signal on the capacitor of the pixel circuit 120 and the connecting part 140, and further improve the display effect.
Fig. 8 is a schematic structural diagram of another display panel according to an embodiment of the present invention, and referring to fig. 8, optionally, in the row where the first pixel circuit 121 is located, the power lines 110 directly connected to the pixel circuits 120 are all electrically connected through the conductive portion 130.
Specifically, in the row of the first pixel circuit 121, the power lines 110 directly connected to each pixel circuit 120 are electrically connected through the conductive parts 130, so that the conductive parts 130 between two adjacent power lines 110 can be in parallel connection with the capacitor plates of the pixel circuits 120 directly connected to two adjacent power lines 110, the capacitor plates of the first pixel circuits 121 between the pixel circuits 120 directly connected to the power lines 110, and the connection parts 140 connected to the capacitor plates, so that the voltage drops of the power voltage signals on the capacitor plates and the connection parts 140 of the pixel circuits 120 are reduced, and the difference between the power voltage signals received by the pixel circuits 120 indirectly electrically connected to the power lines 110 and the power voltage signals actually output by the power supply providing the power voltage signals for the power lines 110 can be reduced, thereby improving the display uniformity and improving the display effect.
Fig. 9 is a schematic structural diagram of another display panel according to an embodiment of the present invention, and fig. 10 is a partial enlarged view of fig. 9, where fig. 10 is a partial enlarged view of the display panel shown in fig. 9 and including a first region 11, and referring to fig. 9 and fig. 10, optionally, the first region 11 includes an arc region 11a, and the pixel circuits 120 in the arc region are arranged in a staggered manner; the at least one power line 110 includes a first portion 111 extending in the first direction y and a second portion 112 extending in the second direction x.
Specifically, because the pixel circuits 120 are arranged in the arc-shaped region in a staggered manner, the power line 113 completely extends along the first direction y, and cannot be connected to all the pixel circuits 120 in one column, so that, in the first region 11, for the power line 110 electrically connected to one column of pixel circuits 120 including the pixel circuits 120 arranged in a staggered manner, the power line 110 includes a first portion 111 and a second portion 112, where the first portion 111 extends along the first direction y, and the second portion 112 extends along the second direction x, so as to achieve connection between the power line 110 and the pixel circuits 120 arranged in a staggered manner. When the pixel circuits 120 are closely arranged, the distance between the pixel circuits 120 in adjacent rows is very small, and in the arc-shaped area, the data line also includes a portion extending along the first direction y and a portion extending along the second direction x, so that the second portion 112 of the power line 110 corresponding to a plurality of pixel circuit columns cannot be arranged in the small space of the pixel circuits 120 in the adjacent rows, and the first pixel circuit 121 in one row of the pixel circuits 120, which cannot be directly electrically connected with the power trace, is indirectly connected with the power line 110 directly connected with other pixel circuits 120 in the same row through the capacitor layer; in addition, in the row of the first pixel circuits 121, the power line 110 indirectly connected to the first pixel circuit 121 is at least connected to another power line 110 through the conductive part 130, so that the difference between the power voltage signal received by the pixel circuit 120 indirectly connected to the power line 110 and the power voltage signal actually output by the power supply providing the power voltage signal for the power line 110 is reduced, thereby improving the display uniformity and the display effect.
Fig. 11 is a cross-sectional view of another display panel provided by an embodiment of the invention, where fig. 11 can be obtained by cutting along B-B' in fig. 1, and referring to fig. 11, optionally, the capacitor layer includes a first plate layer and a second plate layer, the power line 110 is disposed on a side of the second plate layer away from the first plate layer, the first pixel circuit 121 is indirectly connected to the power line 110 directly connected to other pixel circuits 120 in the same row through the second plate layer, and the conductive portion 130 is in the same layer as the second plate layer or the first plate layer.
Specifically, referring to fig. 4, the first plate layer may be the second metal layer 220, and the second plate layer may be the third metal layer 230, and fig. 11 schematically illustrates a case where the conductive part 130 is the same layer as the first plate layer (the second metal layer 220). The conductive portion 130 and the first plate layer and/or the second plate layer may also divide a part of the current on the power line 110, so as to reduce the current flowing through the connecting portion 140 connecting the capacitors in the two pixel circuits 120 in the capacitor layer, and further reduce the voltage drop of the power voltage signal on the capacitor plate of the pixel circuit 120 and the connecting portion 140, thereby improving the display effect.
Optionally, the metal layer where the power line 110 is located is made of titanium aluminum titanium, and the metal layer where the capacitor layer is located is made of molybdenum. Specifically, the titanium-aluminum-titanium material has a small resistance relative to molybdenum, so that the voltage drop of the power supply voltage signal on the power line 110 is small. Moreover, since the current flows more easily to the metal with small resistance, when the conductive part 130 and the power line 110 are disposed on the same layer, a large amount of current flows to the conductive part 130, and the voltage drop of the power voltage signal on the capacitor layer serving as the connection function is further reduced, thereby further improving the display effect.
Fig. 12 is a schematic structural diagram of another display panel provided in an embodiment of the present invention, and fig. 13 is a partial enlarged view of fig. 12, where fig. 13 is a partial enlarged view of the display panel shown in fig. 12 and including a first area 11 and a first sub-display area 10, and referring to fig. 12 and fig. 13, and with reference to fig. 9 and fig. 10, on the basis of the above embodiments, optionally, the display area 1a further includes a first sub-display area 10 and a second sub-display area 20, and the first area 11 connects the first sub-display area 10 and the second sub-display area 20; the second sub-display region 20 and the first region 11 include the pixel circuit 120, and the pixel circuit 120 in the first region 11 is electrically connected to the light emitting device in the first region 11 and the first sub-display region 10;
optionally, the first sub-display area 10 is a transparent display area.
Specifically, the first region 11 may serve as a transition region between the first sub-display section 10 and the second sub-display section 20. The pixel circuit 120 may not be included in the first sub-display area 10 but the light emitting device is included, the pixel circuit 120 and the light emitting device are disposed in the second sub-display area 20 and the first area 11, and the pixel circuit 120 in the first area 11 may be electrically connected to the light emitting device in the first sub-display area 10 and the light emitting device in the first area 11, thereby driving the light emitting devices in the first sub-display area 10 and the first area 11 to emit light. The pixel circuit 120 and the signal line (such as a power line, a data line, a scanning line and the like) are not arranged in the first sub-display area 10, so that the number of metal film layers in the first sub-display area 10 is small, the light transmittance of the first sub-display area 10 is improved, when the camera is arranged below the first sub-display area 10, more light can be received by the camera, and the camera effect is improved.
The pixel circuits 120 in the first sub-display area 10 are not disposed, which results in a dense arrangement of the pixel circuits 120 in the first area 11, and the first area 11 includes a first pixel circuit 121 indirectly connected to the power line 110 directly connected to the other pixel circuits 120 in the same row through a capacitor layer. And since the pixel circuits 120 in the first region 11 are to drive not only the light emitting devices in the first region 11 but also the light emitting devices in the first sub-display section 10, there may be a case where one pixel circuit 120 in the first region 11 drives a plurality of light emitting devices in the first sub-display section 10, so that the currents in the first sub-display section 10 and the first region 11 are large, and thus the voltage drop on the power supply line 110 has a large influence on the display in the first region 11 and the first sub-display section 1 a. In this embodiment, by arranging the first pixel circuit 121 in the row, the power line 110 connected to the first pixel circuit 121 is connected to at least another power line 110 through the conductive part 130, the conductive part 130 is located between the row of the first pixel circuit 121 and the adjacent pixel circuit row, and the conductive part 130 extends along the second direction x. The conductive part 130 can divide a part of the current on the power line 110, so that the current flowing through the connecting part 140 connecting the capacitors in the two pixel circuits 120 in the capacitor layer is reduced, and further the voltage drop of the power voltage signal on the capacitor plate of the pixel circuit 120 and the connecting part 140 is reduced, so that the difference between the power voltage signal received by the pixel circuit 120 indirectly electrically connected with the power line 110 and the power voltage signal actually output by the power supply providing the power voltage signal for the power line 110 is reduced, further the display uniformity is improved, and the display effect is improved.
And optionally, the distance in the first direction y between two adjacent rows of pixel circuits 120 closest to the second sub-display area 20 is greater than the distance in the first direction y between two adjacent rows of pixel circuits 120 farthest from the second sub-display area 20. And optionally, the closer to the second sub-display area 20, the larger the pitch of the pixel circuits 120 of the two adjacent rows is, the farther from the second sub-display area 20, the smaller the pitch of the pixel circuits 120 of the two adjacent rows is. Since the power line 110 is generally led from the second sub-display area 20 to the first area 11, for a column of pixel circuits 120, from the pixel circuit 120 closest to the second sub-display area 20 to the pixel circuit 120 farthest from the second sub-display area 20, if a pixel circuit 120 (for example, the pixel circuit 120 is referred to as the second pixel circuit 120) between the pixel circuit 120 closest to the second sub-display area 20 and the pixel circuit 120 farthest from the second sub-display area 20 cannot be directly electrically connected to the power line 110, then neither the second pixel circuit 120 in the column nor the pixel circuit 120 farthest from the second sub-display area 20 can be directly electrically connected to the power line 110. The more the pixel circuits 120 in two adjacent rows closer to the second sub-display area 20 are arranged, the smaller the distance between the pixel circuits 120 in two adjacent rows farther from the second sub-display area 20 is, and it can be ensured that there is enough space between the pixel circuits 120 in two adjacent rows relatively closer to the second sub-display area 20 to arrange the second portion 112 of the power supply wiring extending along the second direction x, so that the more rows of the pixel circuits 120 in the first area 11 can be directly and electrically connected with the power supply wiring, and it is further beneficial to reduce the number of the pixel circuits 120 indirectly and electrically connected with the power supply wiring, and since the power supply voltage signal received by the pixel circuits 120 indirectly and electrically connected with the power supply wiring is easily affected by the voltage drop of the capacitor layer, therefore, reducing the number of the pixel circuits 120 indirectly and electrically connected with the power supply wiring is beneficial to improving the display uniformity, and improving the display effect.
When the display panel is manufactured, the film layers in the same layer in the first sub-display region 10, the second sub-display region 20 and the first region 11 can be manufactured at the same time to form the display panel with an integrated structure, so that the process steps are simplified, and the manufacturing cost is reduced. Each film layer of the first sub-display area 10, the second sub-display area 20, and the first area 11 may also be separately manufactured, so that the first sub-display area 10, the second sub-display area 20, and the first area 11 may be manufactured in a more flexible shape, and then the first sub-display area 10, the second sub-display area 20, and the first area 11 are spliced together, for example, the first sub-display area 10 may be a rectangle shown in fig. 12, and may also be a drop shape, a circle shape, a trapezoid shape, a bar shape, an arc shape (a display panel structure shown in fig. 9) or a shape size of a status bar when the display panel displays, which is not specifically limited herein. Moreover, the position of the first sub-display area 10 is not limited to the bang area shown in fig. 9 and 12, and may be located in any area of the whole display panel, and the embodiment of the present invention is not particularly limited herein. The display panel provided by the embodiment can realize full-screen display.
An embodiment of the present invention further provides a display device, fig. 14 is a schematic structural diagram of the display device provided in the embodiment of the present invention, and referring to fig. 14, the display device 1 includes
An apparatus body 40 having a device region 41;
and the display panel 100 provided by any embodiment of the present invention, the display panel 100 is covered on the device body 40;
the device region 41 is located below the first sub-display region 10 of the display panel, and a light sensing device 411 that emits or collects light through the first sub-display region 10 is disposed in the device region.
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 some detail by the above embodiments, the invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the invention, and the scope of the invention is determined by the scope of the appended claims.
Claims (11)
1. A display panel, comprising: a display area comprising a first region;
a power line extending along a first direction is arranged in the display area, and the first area comprises a pixel circuit array; in the first area, in at least one pixel circuit column from the first column to the last column, at least one first pixel circuit is indirectly connected with a power line directly connected with other pixel circuits in the same row through a capacitance layer;
in the row of the first pixel circuit, the power line indirect to the first pixel circuit is connected with at least another power line through a conductive part, the conductive part is located between the row of the first pixel circuit and an adjacent pixel circuit row, the conductive part extends along a second direction, and the first direction and the second direction intersect.
2. The display panel according to claim 1, wherein the conductive portion is on the same layer as the power supply line.
3. The display panel of claim 2, wherein the conductive portion and the power line are located in a first metal layer, the display panel further comprises a second metal layer and a third metal layer, the capacitive layer comprises a first plate layer and a second plate layer, and the first plate layer and the second plate layer are located in the second metal layer and the third metal layer, respectively;
the display panel also comprises a data line positioned on the first metal layer, and the extending direction of the data line is the same as that of the power line; the second metal layer, the third metal layer and the first metal layer are sequentially stacked, and the data line is bridged through the second metal layer or the third metal layer at the position of the conductive part.
4. The display panel according to claim 1, wherein the first pixel circuit is located between a first pixel circuit and a last pixel circuit of a row of the pixel circuits, the first pixel circuit is indirectly connected to a first power supply line directly connected to one of the pixel circuits on a first side and a second power supply line directly connected to one of the pixel circuits on a second side through a capacitor layer, the first power supply line and the second power supply line are electrically connected through the conductive portion, and the first side and the second side are opposite sides of the first pixel circuit.
5. The display panel according to claim 1, wherein in the row where the first pixel circuit is located, the power supply lines to which the pixel circuits are directly connected are electrically connected through a conductive portion.
6. The display panel according to claim 1, wherein the first region includes an arc region in which the pixel circuits are arranged with misalignment; at least one of the power lines includes a first portion extending in a first direction and a second portion extending in a second direction.
7. The display panel according to claim 1, wherein the capacitor layer includes a first electrode plate layer and a second electrode plate layer, the power line is disposed on a side of the second electrode plate layer away from the first electrode plate layer, the first pixel circuit is indirectly connected to the power line directly connected to the other pixel circuits in the same row through the second electrode plate layer, and the conductive portion is in the same layer as the second electrode plate layer or the first electrode plate layer.
8. The display panel according to claim 1, wherein the metal layer on which the power line is located is made of titanium aluminum titanium, and the metal layer on which the capacitor layer is located is made of molybdenum.
9. The display panel according to any one of claims 1 to 8, wherein the display region further comprises a first sub-display region and a second sub-display region, and the first region connects the first sub-display region and the second sub-display region; the second sub-display region and the first region include pixel circuits, and the pixel circuits in the first region are electrically connected to the light emitting devices in the first region and the first sub-display region.
10. The display panel according to claim 9, wherein the first sub-display region is a transparent display region.
11. A display device is characterized by comprising
An apparatus body having a device region;
and the display panel of claim 9, overlaid on the device body;
the device area is located below a first sub-display area of the display panel, and a photosensitive device which transmits light to the first sub-display area or collects light is arranged in the device area.
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| CN202010004485.7A CN111161662B (en) | 2020-01-03 | 2020-01-03 | Display panel and display device |
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| CN113178140B (en) * | 2021-04-27 | 2023-07-14 | 上海天马微电子有限公司 | Display panel and display device |
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| JP3977299B2 (en) * | 2002-09-18 | 2007-09-19 | セイコーエプソン株式会社 | Electro-optical device, matrix substrate, and electronic apparatus |
| JP6619622B2 (en) * | 2015-11-13 | 2019-12-11 | 株式会社Ｊｏｌｅｄ | Display panel, display device, and electronic device |
| CN106353945A (en) * | 2016-11-18 | 2017-01-25 | 京东方科技集团股份有限公司 | Display substrate and manufacturing method thereof and display device |
| KR102513840B1 (en) * | 2017-11-15 | 2023-03-23 | 엘지디스플레이 주식회사 | Display panel |
| CN109061975A (en) * | 2018-10-26 | 2018-12-21 | 昆山国显光电有限公司 | A kind of display device and its display panel |
| CN109410823B (en) * | 2018-12-27 | 2022-04-19 | 厦门天马微电子有限公司 | Display panel and display device |
| CN110176465A (en) * | 2019-06-27 | 2019-08-27 | 上海天马有机发光显示技术有限公司 | A kind of display panel and display device |
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