CN113900305A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN113900305A CN113900305A CN202111184067.1A CN202111184067A CN113900305A CN 113900305 A CN113900305 A CN 113900305A CN 202111184067 A CN202111184067 A CN 202111184067A CN 113900305 A CN113900305 A CN 113900305A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134345—Subdivided pixels, e.g. for grey scale or redundancy
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention provides a display panel and a display device, wherein the display panel comprises an array substrate, the array substrate comprises a plurality of sub-pixel units, each sub-pixel unit comprises a pixel electrode, each pixel electrode comprises a plurality of branch electrodes and a first connecting electrode extending along a second direction, and one end of each branch electrode is connected with the first connecting electrode; the signal line also extends along the second direction; in the direction perpendicular to the display panel, the first connecting electrodes and the signal line projection have overlapping regions, at least two regions in the overlapping regions have different widths in the first direction, and the second direction intersects with the first direction. The design can effectively reduce the area of the overlapped area of the film layer where the signal line is positioned and the film layer where the pixel electrode is positioned, thereby avoiding the film layer fracture of the pixel electrode at the edge of the signal line, and also avoiding the fracture of the branch electrode and the first connecting electrode at the joint, thereby avoiding the occurrence of poor display.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
In real life, people are on-vehicle to the application, display screen on the intelligent system has different demonstration demands, if different visual angle demands, on-vehicle display screen usually needs to have better contrast on specific visual angle, when satisfying the demonstration demand, the consumption that needs the display screen again is low as far as possible, this makes the width of signal line constantly increase in the display screen, the width increase of signal line can shelter from the light leak on the one hand to a certain extent, thereby promote display panel's contrast, on the other hand can reduce the resistance of signal line again, thereby reduce the load on the signal line.
However, the increased width of the signal line is accompanied by some additional problems, such as the possibility of increasing the overlapping probability of other wires or electrodes in the display screen and the signal line in the direction perpendicular to the display screen, and since the signal line has a certain thickness, at the edge of the signal line, other wires or electrodes need to be deposited on the side wall of the signal line, i.e. need to cross over the signal line with a certain thickness, the probability of breakage of other wires or electrodes is increased, and thus poor display is caused.
Disclosure of Invention
Based on the above problems, embodiments of the present invention provide a display panel and a display device, which have good display effect and low power consumption.
In a first aspect, the present application provides a display panel, including an array substrate;
the array substrate comprises a plurality of sub-pixel units, each sub-pixel unit comprises a pixel electrode, each pixel electrode comprises a plurality of branch electrodes and a first connecting electrode extending along a second direction, and one end of each branch electrode is connected with the corresponding first connecting electrode;
a signal line extending in the second direction;
in a direction perpendicular to the display panel, the first connection electrodes and the signal line projection have overlapping regions, there are at least two regions in the overlapping regions having different widths in a first direction, and the second direction intersects with the first direction.
In a second aspect, the present application provides a display device including the display panel.
Compared with the prior art, the display panel and the display device provided by the invention at least realize the following beneficial effects:
the application provides a display panel and display device, display panel includes a plurality of sub pixel units, and the sub pixel unit includes the pixel electrode, and the pixel electrode includes a plurality of branch electrodes and the first connection electrode that extends along the second direction, wherein the one end of branch electrode with first connection electrode is connected, and the signal line also extends along the second direction, and in the direction of perpendicular display panel, first connection electrode has the overlap area with the signal line projection, and it is inconsistent to have two regional widths along first direction at least in the overlap area. Because the signal line has certain thickness, at the edge of the signal line, the pixel electrode needs to be deposited on the side wall of the signal line, namely the signal line with certain thickness needs to be spanned, which is also called as the climbing phenomenon of the pixel electrode at the edge position of the signal line, and through setting the overlapping area of the first connecting electrode and the projection of the signal line to have different widths in the first direction in the direction vertical to the display panel, the overlapping area of the film layer where the signal line is located and the film layer where the pixel electrode is located can be effectively reduced, thereby avoiding the film layer fracture of the pixel electrode during climbing the slope, and avoiding the fracture of the branch electrode and the first connecting electrode at the joint to a certain extent, thereby avoiding the occurrence of poor display.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that are required in the description of the embodiments will be briefly introduced, the drawings described herein are provided to provide further understanding of the present invention and constitute a part of the present invention, and the exemplary embodiments and descriptions thereof of the present invention are provided for explaining the present invention and do not constitute a limitation of the present invention.
Fig. 1 is a schematic top view of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic top view of the area S in FIG. 1;
FIG. 3 is another schematic top view of the area S of FIG. 1;
FIG. 4 is a schematic top view of the area S in FIG. 1;
FIG. 5 is a schematic top view of the area S in FIG. 1;
FIG. 6 is a schematic top view of the area S in FIG. 1;
FIG. 7 is a schematic top view of the area S of FIG. 1;
FIG. 8 is a schematic top view of another display panel according to an embodiment of the present invention;
FIG. 9 is a schematic top view of the area S' of FIG. 8;
FIG. 10 is another schematic top view of the area S' of FIG. 8;
FIG. 11 is a schematic top view of the area S' of FIG. 8;
FIG. 12 is a schematic top view of the area S of FIG. 1;
FIG. 13 is a schematic top view of the area S of FIG. 1;
FIG. 14 is a schematic top view of the area S in FIG. 1;
fig. 15 is a schematic top view of a display device according to an embodiment of the invention.
Detailed Description
The embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. 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.
Since the display panel generally needs to have a better contrast ratio at a specific viewing angle and lower power consumption, the width of the signal line, which is the width in the extending direction of the vertical signal line, is increasing within the display panel, and then the overlapping area between the signal line and the pixel electrode occurs in the direction of the vertical display panel; since the pixel electrode includes a plurality of branch electrodes and a first connection electrode having the same extension direction as the extension direction of the signal line, one end of the branch electrode is connected to the first connection electrode; in order to ensure that the light-transmitting area of the pixel unit has a high light transmittance, the widths of the first connecting electrode and the branch electrode are generally small so as to be able to set a large number of branch electrodes having a long extension length, thereby obtaining a high electric field intensity, the widths of the first connecting electrode and the branch electrode refer to the widths in the direction perpendicular to the extension direction of the first connecting electrode and the branch electrode, respectively, and the size of the connecting portion of the first connecting electrode and the branch electrode is small, when there is overlap between the film projection of the signal line and the film projection of the pixel electrode in the direction perpendicular to the display panel, since the signal line has a certain thickness, the pixel electrode crosses the film with a certain thickness at the edge position of the signal line overlapping with the projection, that is, the pixel electrode climbs at the edge position of the signal line overlapping with the projection, and this area easily causes the pixel electrode to break, resulting in poor display.
Based on the above-mentioned problems, the present invention provides a display panel, as shown in fig. 1-2, fig. 1 is a schematic top view of a display panel according to an embodiment of the present invention, and fig. 2 is a schematic top view of an area S in fig. 1; the display panel 1 shown in fig. 1 includes an array substrate 10, the array substrate 10 includes a plurality of sub-pixel units 100, it should be noted that the sub-pixel units 100 shown in fig. 1 are only schematic and do not represent actual sizes, numbers, shapes and arrangements, and in some other embodiments of the present invention, the sizes, numbers, shapes and arrangements of the sub-pixel units 100 may be set according to actual requirements, which is not limited by the present invention.
The sub-pixel unit 100 in the S region shown in fig. 2 includes a pixel electrode 11, the pixel electrode 11 includes a plurality of branch electrodes 111 and a first connection electrode 110, the first connection electrode 110 extends in a second direction Y, and one end of the branch electrode 111 is connected to the first connection electrode 110. The array substrate 10 further includes a signal line 12, and the signal line 12 also extends along the second direction Y, that is, the extending direction of the signal line 12 is the same as the extending direction of the first connecting electrode 110; in the direction perpendicular to the display panel 1, the projection of the first connection electrode 110 and the signal line 12 has an overlap region, and at least two regions among the overlap region have different widths in the first direction, as shown in fig. 2, at least two regions a1 and a2 exist among the projection overlap region of the first connection electrode 110 and the signal line 12, an overlap region having a width L1 in the first direction X is included in the region a1, an overlap region having a width L2 in the first direction X is included in the region a2, L1 is greater than L2, and the first direction X intersects with the second direction Y.
By arranging the overlapping regions of the projections of the first connecting electrode 110 and the signal line 12 to have different widths in the first direction X in the direction perpendicular to the display panel 1, the overlapping region area of the projection of the film layer where the signal line 12 is located and the film layer where the pixel electrode 11 is located can be effectively reduced; since the widths of the first-connection electrode 110 and the branch electrode 111 are generally set to be smaller so that a larger number of branch electrodes 111 having a longer extension length can be provided in order to ensure a higher light transmittance in the light-transmitting region of the sub-pixel unit 100, thereby obtaining a larger electric field intensity, where the widths of the first-connection electrode 110 and the branch electrode 111 refer to widths in a direction perpendicular to the extending direction of the first-connection electrode and the branch electrode, respectively, the size of the connection portion of the first-connection electrode 110 and the branch electrode 111 is also smaller, when there is overlap in the film projection of the signal line 12 and the film projection of the pixel electrode 11 in the direction perpendicular to the display panel 1, since the signal line 12 has a certain thickness, the pixel electrode 11 crosses the film having a certain thickness at the edge position of the signal line 12 overlapping the projection thereof, that is, the pixel electrode 11 climbs the edge position of the signal line 12 overlapping the projection thereof, this region easily causes breakage of the pixel electrode 11, thereby causing display failure; and the overlapping area of the film layer where the signal line 12 is located and the projection of the film layer where the pixel electrode 11 is located is reduced, so that the probability of breakage of the pixel electrode 11 at a climbing position can be reduced, and normal display of the sub-pixel unit 100 is ensured.
Optionally, as shown in fig. 3, fig. 3 is another schematic top view of the area S in fig. 1; in fig. 3, in the side of the signal line 12 close to the branch electrode 111, there are a plurality of first recesses M, in the direction perpendicular to the display panel 1, in the projection overlapping region of the first connecting electrode 110 and the signal line 12, the width of the overlapping region corresponding to the first recess M along the first direction X is L4, the width of the overlapping region not corresponding to the first recess M along the first direction X is L3, and L3 is greater than L4, that is, the overlapping region area of the projection of the film layer where the signal line 12 is located and the film layer where the pixel electrode 11 is located is reduced by providing a plurality of first recesses M on the side of the signal line 12 close to the branch electrode 111, in this way, in the actual preparation of the signal line 12, the method is simple and easy to implement, does not need to add extra process steps, and can reduce the probability of the pixel electrode 11 breaking at the climbing position, thereby ensuring the normal display effect of the sub-pixel unit 100; optionally, the plurality of first concave portions M are arranged at intervals along the extending direction of the signal line 12, that is, the second direction Y, the first concave portions M may be arranged at fixed intervals or may be arranged at non-fixed intervals in the second direction Y, and the maximum widths W of the first concave portions M in the second direction Y may be consistent or may not be consistent, which is not limited in the present invention; alternatively, as shown in fig. 3, the plurality of first recesses M are arranged at regular intervals along the extending direction of the signal line 12, and the maximum widths W along the second direction Y are consistent, which not only facilitates the preparation of the signal line 12, but also ensures the stability of signal transmission on the signal line 12.
Optionally, as shown in fig. 4, fig. 4 is another schematic top view of the area of fig. 1S; in the preparation of the signal line 12, due to the limitation of practical process capability, the signal line 12 is provided with a concave portion, and generally, the bottom edge and the side edge of the concave portion easily form an obtuse angle, as shown in fig. 3, two side edges B2 of the first concave portion M opposite to each other along the second direction Y and a bottom edge B1 connected with two side edges B2 form an angle between the bottom edge B1 and the side edge B2, which is generally an obtuse angle in practical process, so that the projection of the signal line 12 at the side close to the branch electrode 111 corresponding to the first concave portion M includes at least one arc, and the preparation of the signal line 12 is facilitated under the condition that the effect of reducing the probability of breaking of the pixel electrode 11 at the climbing position and ensuring normal display of the sub-pixel unit 100 is achieved. The pattern enclosed by the base B1, the two sides B2, and the signal line 12 on the side close to the branch electrode 111 of the first concave portion M and the sides not corresponding to the first concave portion M may be rectangular (see fig. 3), triangular, trapezoidal, rounded rectangular, triangular-like, trapezoidal-like, or the like, and the present invention is not limited thereto.
Alternatively, with continued reference to fig. 3 and 4, the end of the branch electrode 111 connected to the first connecting electrode 110 is the first end portion D1, the first concave portion M at least partially overlaps the projection of the first end portion D1 in the first direction X, and the projection of the first concave portion M at least partially overlaps the projection of the first end portion D1 in the first direction X, that is, the concave portion is formed at a position corresponding to the first end portion D1 on the side of the signal line 12 close to the branch electrode 111, or at least a part of the first concave portion M corresponds to the first end portion D1, so that the distance D between the first end portion D1 and the projection of the signal line 12 in the first direction X in the direction perpendicular to the display panel 1 can be increased, and since the width of the first connecting electrode 110 and the branch electrode 111 is set smaller, so that a larger number of branch electrodes 111 and with a longer extension length can be provided, and thus a larger electric field intensity can be obtained, so that the size of the first end portion D1 connected to the first connecting electrode 110 and the branch electrode 111 is also smaller, since the first end portions D1 of the branch electrodes 111 do not have continuity in the second direction Y, that is, the plurality of branch electrodes 111 are actually arranged in the second direction Y, that is, the width of the first end portion D1 in the second direction Y is also smaller; when the first end portion D1 is closer to the signal line 12, the narrow width of the first end portion D1 along the second direction Y further increases the risk of breakage of the first connecting electrode 110, thereby affecting the display of the sub-pixel unit 100. Therefore, when the first concave portion M is disposed to at least partially overlap the projection of the first end portion D1 in the first direction X, that is, on the side of the signal line 12 close to the branch electrode 111, a concave portion is formed at a position corresponding to the first end portion D1, or at least a portion of the first concave portion M corresponds to the first end portion D1, which corresponds to increasing the distance D between the first end portion D1 and the projection of the signal line 12 in the first direction X in the direction perpendicular to the display panel 1, the risk of the first end portion D1 and the first connecting electrode 110 breaking can be reduced, thereby ensuring normal display of the sub-pixel unit 100.
Optionally, based on the above design, as shown in fig. 5, fig. 5 is another schematic top view of the area S in fig. 1; the side of the signal line 12 far from the branch electrode 111 further has a plurality of first convex portions N1, and the projection of the first convex portion N1 in the first direction X at least partially overlaps the projection of the first concave portion M in the first direction X, that is, the first convex portion N1 disposed on the side of the signal line 12 far from the branch electrode 111 at least partially corresponds to the first concave portion M, because the first concave portion M disposed on the side of the signal line 12 near the branch electrode 111 makes the width of the region corresponding to the first concave portion M in the first direction X on the signal line 12 smaller than the rest of the region, so if the first convex portion N1 is disposed on the side of the signal line 12 far from the branch electrode 111 and the projection of the first convex portion N1 and the projection of the first concave portion M in the first direction X can at least partially overlap, the width of the signal line 12 in the first direction X can be compensated, thereby preventing the signal line 12 from being broken due to the smaller width of the region corresponding to the first concave portion M, therefore, the continuity of the signal line 12 can be ensured, and the stability of the signal on the signal line 12 can be ensured.
Optionally, a side of the signal line 12 away from the branch electrode 111, which corresponds to the first convex portion N1 region, is a convex portion side C1, a side of the signal line 12 away from the branch electrode 111, which does not correspond to the first convex portion N1 region, is a non-convex portion side C2, and a maximum distance between the convex portion side C1 and an extension line of the non-convex portion side C2 along the first direction X is e 1; the side of the signal line 12 close to the branch electrode 111 corresponding to the region of the first recess M is a recess side B1, that is, a bottom side B1 of the first recess M, the side of the signal line 12 close to the branch electrode 111 not corresponding to the region of the first recess M is a non-recess side B4, a maximum distance between the bottom side B1 and an extension line of the non-recess side B4 in the first direction X is e2, e1 is set equal to e2, such as the width of the signal line 12 in the direction perpendicular to the extension direction thereof may be set equal everywhere, that is, the projected shapes of the first convex portion N1 and the first recess M in the direction perpendicular to the display panel 1 may be set, or the width of the signal line 12 in the region corresponding to the first recess M and at the position farthest from the branch electrode 111 in the region of the first recess M may be set, the width of the signal line 12 is equal to the width of the signal line 12 in the region not corresponding to the first recess M, where the width of the signal line 12 is also referred to the width in the direction perpendicular to the extension direction thereof, that is, at least the width of the signal line 12 farthest from the branch electrode 111 in the region corresponding to the first concave portion M is not too small, so that the load on the signal line 12 is sufficiently ensured to be uniform, the signal strength is uniform, and the signal line 12 is also ensured not to overlap with the projection of the pixel electrode 11 of the adjacent sub-pixel unit 100 in the direction perpendicular to the display panel 1.
Optionally, with reference to fig. 5, the branch electrode 111 has a second end portion D2, wherein the second end portion D2 is an end away from the signal line 12, and the projection of the second end portion D2 and the first convex portion N1 on the signal line 12 of the adjacent sub-pixel unit 100 in the first direction X do not overlap; the second end portion D2 is not overlapped with the projection of the first convex portion N1 on the signal line 12 of the adjacent sub-pixel unit 100 in the first direction X, so that on one hand, the projection of the film layer where the pixel electrode 11 of the adjacent sub-pixel unit 100 is located and the film layer where the signal line 12 is located in the direction perpendicular to the display panel 1 can be prevented from being overlapped, and thus the second end portion D2 of the branch electrode 111 and other regions of the branch electrode 111 can be prevented from being broken, on the other hand, the branch electrode 111 can have a longer extension length, and the transmittance of the sub-pixel unit 100 can be improved to a certain extent.
Optionally, as shown in fig. 6, fig. 6 is another schematic top view of the area of fig. 1S; the signal line 12 has first branches 121 and second branches 122, the first branches 121 extend along a third direction P3, the second branches 122 extend along a fourth direction P4, the first branches 121 and the second branches 122 are alternately arranged along a second direction Y, the third direction P3 and the fourth direction P4 both cross the first direction X, and the third direction P3 and the fourth direction P4 both cross the second direction Y; this design keeps the signal line 12 unchanged in its overall direction of extension, i.e. whether the signal line extends substantially in the second direction Y, however, in a local area, the signal line 12 continuously changes the extending direction of its branch portion, such as the extending direction of the first branch portion 121 and the second branch portion 122, it is possible to make the overlapping area of the projection of the signal line 12 and the first connection electrode 110 of the pixel electrode 11 in the direction perpendicular to the display panel 1, have different widths in the first direction X, thereby reducing the overlapping area of the film layer where the signal line 12 is located and the projection of the film layer where the pixel electrode 11 is located, the width of the signal line 12 in the direction perpendicular to the extending direction is consistent, the transmitted signal is uniform, and no additional process step is needed, and the probability of breakage of the pixel electrode 11 at the climbing position can be reduced, so that normal display of the sub-pixel unit 100 is ensured.
Optionally, based on the above design, please refer to fig. 7, fig. 7 is another schematic top view of the area of fig. 1S; the signal line 12 has first branches 121 and second branches 122, the first branches 121 and the second branches 122 are alternately arranged in the second direction Y, the first branches 121 and the second branches 122 have first connecting portions K1 and second connecting portions K2, the first connecting portion K1 is closer to the branch electrode 111 than the second connecting portion K2 along the first direction X, and the first connecting portion K1 and the first end portion D1 of the branch electrode 111 do not overlap in projection in the first direction X; in the local area, the signal line 12 continuously changes the extending direction of its branch portion, and the distance between the side Q1 of the signal line 12 close to the branch electrode 111 and the first end portion D1 along the first direction X in the direction perpendicular to the display panel 1 has a minimum value and a maximum value, and even if the projection of the first connecting portion K1 and the first end portion D1 along the second direction Y at least partially overlaps, the first connecting portion K1 and the projection of the first end portion D1 of the branch electrode 111 along the first direction X are arranged not to overlap, that is, the area of the signal line 12, which may overlap with the projection of the first end portion D1 of the branch electrode 111, along the second direction Y, can be arranged to avoid the first end portion D1, or the area of the side Q1 of the signal line 12 close to the branch electrode 111 along the direction perpendicular to the display panel 1, which has the minimum distance between the projection of the first end portion D1 along the first direction X, along the first end portion D1, corresponding to the projection of the second connecting portion K2 and the projection of the first end portion D1 at least partially overlapping in the first direction X, corresponding to the area of the signal line 12 corresponding to the first end portion D1 facing away from the branch electrode 111 is inexpensive, corresponding to the distance D between the signal line 12 and the projection of the first end portion D1 in the first direction X in the direction perpendicular to the display panel 1 being increased, the risk of the first end portion D1 breaking away from the first connecting electrode 110 can be reduced, thereby ensuring normal display of the sub-pixel unit 100.
Optionally, with reference to fig. 7, the branch electrode 111 has a second end portion D2, wherein the second end portion D2 is an end away from the signal line 12, and the projection of the second end portion D2 and the second connecting portion K2 on the signal line 12 of the adjacent sub-pixel unit 100 in the first direction X do not overlap; compared with the first connection portion K1, the second connection portion K2 is further away from the branch electrode 111, and then is closer to the branch electrode 111 of the adjacent sub-pixel unit 100, and the projection of the second end portion D2 and the second connection portion K2 on the signal line 12 of the adjacent sub-pixel unit 100 in the first direction X are not overlapped, so that on one hand, the projection of the film layer where the pixel electrode 11 of the adjacent sub-pixel unit 100 is located and the projection of the film layer where the signal line 12 is located in the direction perpendicular to the display panel 1 can be avoided from being overlapped, and thus, the second end portion D2 of the branch electrode 111 and other areas of the branch electrode 111 can be avoided from being broken, on the other hand, the branch electrode 111 can also have a longer extension length, and the transmittance of the sub-pixel unit 100 can be improved to a certain extent.
Optionally, as shown in fig. 8, fig. 8 is a schematic top view of another display panel according to an embodiment of the present invention; as shown in fig. 8, the display panel 2 includes a plurality of touch electrode lines T1, a plurality of auxiliary lines T2, and a driving circuit 21, the touch electrode line T1 is electrically connected to the driving circuit 21, at least a portion of the signal lines 12 in the signal lines 12 may be the touch electrode line T1, at least a portion of the signal lines 12 may be the auxiliary lines T2, and the auxiliary lines T2 and the touch electrode lines T1 may be disposed in the same layer.
Alternatively, as shown in fig. 9 to 11, fig. 9 is a schematic top view of the region S ' of fig. 8, fig. 10 is a schematic top view of the region S ' of fig. 8, and fig. 11 is a schematic top view of the region S ' of fig. 8; the auxiliary line T2 has a main body portion T20, a first subsection T21 and a second subsection T22, the end of the first subsection T21 connected to the main body portion T20 is a first sub-end T211, the end of the first subsection T21 not connected to the main body portion T20 is a second sub-end T212, the end of the second subsection T22 connected to the main body portion T20 is a third sub-end T221, the end of the second subsection T22 not connected to the main body portion T20 is a fourth sub-end T222, the first subsection T21 extends in the fifth direction P5, and the second subsection T22 extends in the sixth direction P6; along the first direction X, the second sub-terminal T212 is farther from the branch electrode 111 than the first sub-terminal T211, and the fourth sub-terminal T222 is farther from the branch electrode than the third sub-terminal T221. The array substrate 10 has a plurality of sub-pixel units 100, the plurality of sub-pixel units 100 are arranged in a matrix on the array substrate 10, the plurality of sub-pixel units 100 are arranged along a first direction X to form a sub-pixel unit row, the plurality of sub-pixel unit rows are arranged along a second direction Y, and in the second direction Y, in two adjacent sub-pixel unit rows, the auxiliary line T2 is discontinuous, the auxiliary line T2 is disconnected in the second direction Y, that is, the auxiliary line T2 has opposite sides CT2 in the second direction Y, the first connecting electrode 110 of the pixel electrode 11 needs to cross over the signal line 12 with a certain thickness in the second direction Y, that is, the pixel electrode 11 needs to climb at the side CT2 of the signal line 12, and therefore, the pixel electrode 11 is easily broken in this region, and thus the display failure is caused. The two ends of the auxiliary line T2 are offset toward the side away from the branch electrode 111, so that on one hand, the area of the overlapping region between the film layer of the region where the end of the auxiliary line T2 is located and the projection of the film layer of the first connecting electrode 110 of the pixel electrode 11 in the direction perpendicular to the display panel 1 can be reduced, and the probability of the first connecting electrode 110 of the pixel electrode 11 breaking due to climbing at the side CT2 of the auxiliary line T2 can be reduced, and on the other hand, the distance D between the first end D1 of the branch electrode 111 and the two parts of the auxiliary line T2, i.e., the projection of the first part T21 and the second part T22, along the first direction X can be increased, and the probability of the breaking between the branch electrode 111 and the first connecting electrode 110 can be reduced, and the normal display of the sub-pixel unit 100 can be ensured.
It should be noted that the auxiliary line T2 may be arranged in any manner as described in fig. 2 to 7, and in fig. 9, the auxiliary line T2 is arranged in the manner described in fig. 5; in fig. 10 to 11, the auxiliary line T2 is provided in the manner described in fig. 7, but the present invention is not limited thereto.
Optionally, with continued reference to fig. 10 to 11, when the auxiliary line T2 is arranged in the manner as described in fig. 6 or fig. 7, that is, the auxiliary line T2 is that the main body portion T20 has the first branch portion 121 and the second branch portion 122, the first branch portion 121 extends along the third direction P3, the second branch portion 122 extends along the fourth direction P4, and along the second direction Y, the first branch portion and the second branch portion are alternately arranged, and the third direction P3 and the fourth direction P4 both intersect with the first direction X, and the third direction P3 and the fourth direction P4 both intersect with the second direction Y; the auxiliary line T2 has a first subsection T21 extending in the fifth direction P5 and a second subsection T22 extending in the sixth direction P6, the first subsection T21 and the second subsection T22; the fifth direction P5 may coincide with one of the third direction P3 and the fourth direction P4, and the sixth direction P6 may coincide with the other direction; as in fig. 10, the fifth direction P5 has a coincident direction with the fourth direction P4, and the sixth direction P6 has a coincident direction with the third direction P3; in fig. 11, the fifth direction P5 and the third direction P3 have the same direction, and the sixth direction P6 and the fourth direction P4 have the same direction; that is, the first branch T21 is arranged to extend in the same direction as one of the branches, and the second branch T22 is arranged to extend in the same direction as the other branch; as in fig. 10, the first branch T21 and the second branch 122 have a same direction, the second branch T22 and the first branch 121 have a same direction, because along the second direction Y, the first branch 121 also has two branches 1211 and 1212, the branch 1211 is closer to the first branch T21 than the branch 1212, the branch 1211 and the branch 1212 are respectively connected to different second branches 122, the connection between the branch 1211 and the second branch 122 is the first connection K1, the connection between the branch 1212 and the second branch 122 is the second connection K2, that is, along the second direction Y, the first connection K1 is closer to the first branch T21 than the second connection K2, that is, from the first branch T21 to the direction of the main body T20, the second sub-end T212, the first sub-end T211, the first connection K1, the second connection K2, the angle between the extending direction of the first branch T21 and the extending direction of the first branch 21, the extending direction of the first branch portion T21 and the extending direction of the second branch portion 122 are closer to each other than the angle between the extending direction of the first branch portion T21 and the extending direction of the second branch portion 122, and similarly, the extending direction of the second branch portion T22 and the extending direction of the first branch portion 121 are closer to each other; similarly, as shown in fig. 11, the extending direction of the first branch T21 and the extending direction of the first branch 121 are closer, and the extending direction of the second branch T22 and the extending direction of the second branch 122 are closer; in fig. 10, it can be provided that the first branch T21 has a direction coinciding with the second branch 122, and the second branch T22 has a direction coinciding with the first branch 121; in fig. 11, it can be provided that the first branch T21 has a uniform direction with the first branch 121 and the second branch T22 has a uniform direction with the second branch 122; the first sub-portion T21 of the auxiliary line T2 is aligned with the extending direction of one of the branches, and the second sub-portion T22 is aligned with the extending direction of the other branch, so that the preparation of the auxiliary line T2 is facilitated, the probability of the first connecting electrode 110 breaking due to climbing at the side CT2 of the auxiliary line T2 in the second direction Y is reduced, and the probability of the auxiliary line T2 overlapping with the projection of the pixel electrode 11 of the adjacent sub-pixel unit 100 in the direction perpendicular to the display panel 1 is prevented from increasing.
Optionally, as shown in fig. 12, fig. 12 is another schematic top view of the area S in fig. 1; the side of the first connection portion 110 of the pixel electrode 11 close to the branch electrode 111 has the second protrusion N2, and optionally, the second protrusion N2 is disposed on the side of the first connection portion 110 close to the branch electrode 111, so that the width of the first connection electrode 110 along the first direction X can be increased to a certain extent, the strength of the first connection electrode 110 can be increased, the first connection electrode 110 is prevented from being broken due to climbing at the edge of the signal line 12, and the normal display of the sub-pixel unit 100 is ensured.
Optionally, based on the above design, as shown in fig. 13, fig. 13 is another schematic top view of the area S in fig. 1; in the first direction X, there is a projection of the second convex portion N2 at least partially overlapping the first end portion D1, the first end portion D1 being an end portion where the branch electrode 111 is connected to the first connection electrode 110; alternatively, the second protrusion N2 is disposed in the first direction X, and at least partially overlaps the projection of the first end portion D1, that is, the second protrusion N2 is disposed corresponding to the first end portion D1, and this design can increase the distance D between the signal line 12 and the first end portion D1 in the direction perpendicular to the display panel 1, and improve the stability of the connection between the branch electrode 111 and the first connecting electrode 110 to some extent, thereby reducing the risk of breaking the first end portion D1 and the first connecting electrode 110, and ensuring the normal display of the sub-pixel unit 100.
Optionally, as shown in fig. 14, fig. 14 is another schematic top view of the region S in fig. 1; the branch electrode 111 includes a first branch electrode 1111, a second branch electrode 1112 and a third branch electrode 1113, wherein the extending direction of the first branch electrode 1111 includes a seventh direction P7, the extending direction of the second branch electrode 1112 includes an eighth direction P8, the extending direction of the third branch electrode 1113 includes a first direction X, the seventh direction P7 and the eighth direction P8 intersect the first direction X, the seventh direction P7 and the eighth direction P8 also intersect the second direction Y, the extending direction of a part of the branch electrode 111 is offset from the first direction X, one direction is for the display panel 1 to obtain a more uniform viewing angle, on the other hand, when the side of the signal line 12 away from the branch electrode 111 is provided with a first protrusion N1, and the first protrusion N1 is disposed corresponding to the first recess M, the second end D2 of the branch electrode 111 is prevented from overlapping with the first protrusion N1 of the adjacent sub-pixel unit 100 in a direction perpendicular to the display panel 1, therefore, the second end portion D2 of the branch electrode 111 and other regions of the branch electrode 111 are prevented from being broken, and the branch electrode 111 can have a long extension length, so that the transmittance of the sub-pixel unit 100 can be improved to some extent.
Alternatively, the first branch electrode 1111 and the second branch electrode 1112 may be provided with a plurality of extending directions, as shown in fig. 14, the extending direction of the first branch electrode 1111 includes a seventh direction P7 and a ninth direction P9, and the extending direction of the second branch electrode 1112 includes an eighth direction P8 and a tenth direction P10, which may be adjusted according to the distance between two adjacent branch electrodes 111 along the second direction Y, the requirement of the display panel 1 for the display effect, and the like, so that the display panel 1 obtains a better display effect.
Optionally, with continuing reference to fig. 14, the pixel electrode 111 may further include a second connection electrode 112, the second connection electrode 112 is connected to the second end portion D2 of the branch electrode 111, and optionally, two connection electrodes, i.e., the first connection electrode 110 and the second connection electrode 112, are disposed on the pixel electrode 111 to increase the connection stability between the branch electrode 111 and the connection electrode, for example, if the branch electrode 111 breaks at the first end portion D1, the branch electrode 111 is electrically connected to the second connection electrode 112 at the second end portion D2, so that the branch electrode 111 can still obtain a charging voltage, and thus the probability of poor display of the display panel 1 can also be reduced.
It should be noted that the drawings shown in the present disclosure are schematic diagrams, for convenience of description, only film structures of the signal line 12 and the pixel electrode 11 are shown in some of the drawings, and other film structures of the array substrate 10 are not shown and are not limited; the structures of the signal lines 12 and the pixel electrodes 11 shown in the drawings are for illustration and do not represent actual sizes and numbers, and other arrangements may be made in this portion according to actual requirements of the display panel 1, and the number of the branch electrodes 111 of the pixel electrodes 11 shown in the drawings does not represent an actual number, which is not limited in the present invention.
Fig. 15 is a schematic top view of a display device according to an embodiment of the invention; the embodiment of the invention provides a display device 3, the display device 3 includes a display terminal product such as a smart phone, a flat panel display device, a notebook display device, a vehicle-mounted central control, and the like, the display device 3 includes the display panel 1, and the beneficial effects generated by the display device 3 are also the beneficial effects described in the above embodiment, which are not described again here.
The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.
Claims (15)
1. A display panel, comprising:
an array substrate;
the array substrate comprises a plurality of sub-pixel units, each sub-pixel unit comprises a pixel electrode, each pixel electrode comprises a plurality of branch electrodes and a first connecting electrode extending along a second direction, and one end of each branch electrode is connected with the corresponding first connecting electrode;
a signal line extending in the second direction;
in a direction perpendicular to the display panel, the first connection electrodes and the signal line projection have overlapping regions, there are at least two regions in the overlapping regions having different widths in a first direction, and the second direction intersects with the first direction.
2. The display panel according to claim 1,
the side of the signal line close to the branch electrode is provided with a plurality of first concave parts.
3. The display panel according to claim 2,
the end of the branch electrode connected with the first connecting electrode is a first end part, and the projection of the first concave part and the first end part in the first direction at least partially overlaps.
4. The display panel according to claim 2 or 3,
the side, away from the branch electrode, of the signal line is provided with a plurality of first convex parts, and the projections of the first convex parts and the first concave parts in the first direction at least partially overlap.
5. The display panel according to claim 4,
one end of the branch electrode, which is far away from the signal line, is a second end part, and the second end part does not overlap with the projection of the first convex part of the signal line of the adjacent sub-pixel unit in the first direction.
6. The display panel according to claim 1,
the signal line has a first branch portion extending in a third direction and a second branch portion extending in a fourth direction, and the first branch portion and the second branch portion are alternately arranged in the second direction, the third direction and the fourth direction intersect with the first direction, and the third direction and the fourth direction intersect with the second direction.
7. The display panel according to claim 6,
the branch electrode with the one end that first connecting electrode is connected is first tip, first branch portion with second branch portion has first connecting portion and second connecting portion, follows first direction, first connecting portion compare the second connecting portion are close to branch electrode, and follow first direction, first connecting portion with the projection of first tip is not the overlap.
8. The display panel according to claim 7,
one end of the branch electrode, which is far away from the signal line, is a second end part, and the second end part does not overlap with the projection of the second connecting part of the signal line of the adjacent sub-pixel unit in the first direction.
9. The display panel according to claim 1,
the signal line part is a touch electrode line, the part is an auxiliary line, and the auxiliary line and the touch electrode line are arranged on the same layer.
10. The display panel according to claim 9,
the auxiliary line has a main body portion, a first branch portion and a second branch portion, wherein one end of the first branch portion connected with the main body portion is a first sub-end, one end of the first branch portion not connected with the main body portion is a second sub-end, one end of the second branch portion connected with the main body portion is a third sub-end, one end of the second branch portion not connected with the main body portion is a fourth sub-end, the first branch portion extends in a fifth direction, and the second branch portion extends in a sixth direction;
along the first direction, the second sub-end is farther from the branch electrode than the first sub-end, and the fourth sub-end is farther from the branch electrode than the third sub-end.
11. The display panel according to claim 10,
the signal line has a first branch portion extending in a third direction and a second branch portion extending in a fourth direction, and the first branch portion and the second branch portion are alternately arranged in the second direction, the third direction and the fourth direction intersect with the first direction, and the third direction and the fourth direction intersect with the second direction.
The fifth direction is coincident with the third direction, and the sixth direction is coincident with the fourth direction;
or, the fifth direction is consistent with the fourth direction, and the sixth direction is consistent with the third direction.
12. The display panel according to claim 1,
one side of the first connecting electrode, which is close to the branch electrode, is provided with a second convex part.
13. The display panel according to claim 12,
the end of the branch electrode connected with the first connecting electrode is a first end part, and the projection of the second convex part and the first end part in the first direction at least partially overlaps.
14. The display panel according to claim 1,
the branch electrodes include a first branch electrode and a second branch electrode, the extending direction of the first branch electrode includes a seventh direction, the extending direction of the second branch electrode includes an eighth direction, the seventh direction and the eighth direction intersect with the first direction, and the seventh direction and the eighth direction intersect with the second direction.
15. A display device comprising the display panel according to any one of claims 1 to 14.
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| CN114613830A (en) * | 2022-03-22 | 2022-06-10 | 厦门天马微电子有限公司 | Array substrate and display device |
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| US20180024405A1 (en) * | 2016-07-20 | 2018-01-25 | Japan Display Inc. | Display device |
| CN109188796A (en) * | 2018-10-29 | 2019-01-11 | 惠科股份有限公司 | array substrate and display panel |
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