CN114153328B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN114153328B CN114153328B CN202111466194.0A CN202111466194A CN114153328B CN 114153328 B CN114153328 B CN 114153328B CN 202111466194 A CN202111466194 A CN 202111466194A CN 114153328 B CN114153328 B CN 114153328B
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- 238000010586 diagram Methods 0.000 description 19
- 230000000694 effects Effects 0.000 description 19
- 239000000463 material Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the application provides a display panel and a display device, wherein the display panel comprises a pixel definition layer and a touch electrode layer, and the touch electrode layer is positioned on one side of the pixel definition layer facing a light-emitting surface of the display panel; the pixel definition layer comprises a plurality of first openings, a plurality of second openings and a plurality of third openings, wherein the lengths of the first openings are longest along a first direction; the touch electrode layer comprises a plurality of touch electrode blocks, part of adjacent touch electrode blocks are electrically connected through first connecting electrodes arranged on the same layer, and the other part of adjacent touch electrode blocks are electrically connected through second connecting electrodes arranged on different layers; at least part of the second connecting electrodes extend in the first direction at an included angle alpha which is more than 0 degrees and less than or equal to 90 degrees. The second connection electrode is inclined relative to the length direction of the first opening, so that shielding of the second connection electrode on light emitted by the light-emitting device under a large visual angle can be reduced, the probability of overlapping of the second connection electrode and the first opening is reduced, and the black dark line with the large visual angle is effectively solved.
Description
[ field of technology ]
The application relates to the technical field of display, in particular to a display panel and a display device.
[ background Art ]
Ultra-thin display screens have been a research hotspot in the display field. The touch electrode is integrated into the display panel to form the display screen with the built-in touch electrode, so that the display screen is an effective means for realizing lighter and thinner display screen.
In the display screen with the built-in touch electrode, mutual capacitive touch can still be realized. One conventional approach is to arrange a plurality of touch driving electrodes and a plurality of touch sensing electrodes in the same layer, and the extending mode of the touch driving electrodes is different from the extending direction of the touch sensing electrodes, so as to realize touch action recognition by using the capacitance between the touch driving electrodes and the touch sensing electrodes.
Because the touch driving electrode and the touch sensing electrode are in the same layer and are crossed, in order to realize the electric insulation of the touch driving electrode and the touch sensing electrode, jumper processing is needed to be carried out on the crossing part of the touch driving electrode and the touch sensing electrode. However, the inventor finds that the display screen applying the touch technology can generate black dark lines under a large visual angle, and the black dark lines are more obvious when the resolution of the display screen is higher and higher.
[ MEANS FOR SOLVING PROBLEMS ]
In view of the above, embodiments of the present application provide a display panel and a display device to solve the above problems.
In a first aspect, embodiments of the present application provide a display panel, including:
the pixel definition layer comprises a plurality of first openings, a plurality of second openings and a plurality of third openings; the length of the first opening is longer than that of the second opening along the first direction, and the length of the first opening is longer than that of the third opening;
the touch electrode layer is positioned on one side of the pixel definition layer facing the light emitting surface of the display panel; the touch electrode layer comprises a plurality of touch electrode blocks, wherein part of adjacent touch electrode blocks are electrically connected through a first connecting electrode, and the other part of adjacent touch electrode blocks are electrically connected through a second connecting electrode;
the first connecting electrode and the touch electrode layer are arranged on the same layer, and the second connecting electrode and the touch electrode layer are arranged on different layers; at least part of the second connecting electrodes extend in the first direction at an included angle alpha which is more than 0 degrees and less than or equal to 90 degrees.
In an implementation manner of the first aspect, a plurality of the first openings are sequentially arranged along the first direction; among the plurality of first openings arranged along the first direction, gaps between part of adjacent first openings are first gaps, and gaps between the other part of first openings are second gaps;
wherein the width of the first gap along the first direction is greater than the width of the second gap along the first direction; along the thickness direction of the display panel, at least part of the projection of the second connection electrode overlaps with the projection of the first gap.
In an implementation manner of the first aspect, along a thickness direction of the display panel, a projection of any of the second connection electrodes overlaps with a projection of the first gap.
In an implementation manner of the first aspect, the second openings and the third openings are alternately arranged along the first direction; and a blue light emitting device is arranged in the first opening, a red light emitting device is arranged in the second opening, and a green light emitting device is arranged in the third opening.
In an implementation manner of the first aspect, the extending directions of the second connection electrodes adjacently arranged along a second direction intersect, and the second direction is perpendicular to the first direction.
In an implementation manner of the first aspect, the second connection electrodes arranged along the second direction are arranged in a first minimal repeating unit; the first minimal repeating unit comprises at least three second connecting electrodes, and the first minimal repeating unit comprises at least two second connecting electrodes in extending directions.
In an implementation manner of the first aspect, along the first direction, extending directions of the second connection electrodes adjacently arranged intersect.
In an implementation manner of the first aspect, the second connection electrodes arranged along the first direction are arranged in a second minimal repeating unit; the second minimum repeating unit comprises at least three second connection electrodes, and the second minimum repeating unit comprises at least two second connection electrodes in extending directions.
In an implementation manner of the first aspect, the plurality of touch electrode blocks includes a plurality of first touch electrode blocks and a plurality of second touch electrode blocks, and the first touch electrode blocks are electrically insulated from the second touch electrode blocks;
among the plurality of second connection electrodes arranged along the first direction, part of the second connection electrodes are used for connecting the first touch electrode blocks adjacently arranged along the first direction, and part of the second connection electrodes are used for connecting the second touch electrode blocks adjacently arranged along the second direction; the second direction intersects the first direction;
among the plurality of second connection electrodes arranged along the second direction, part of the second connection electrodes are used for connecting the second touch electrode blocks arranged adjacently along the second direction, and part of the second connection electrodes are used for connecting the first touch electrode blocks arranged adjacently along the first direction.
In an implementation manner of the first aspect, among a plurality of second connection electrodes arranged along the first direction, at least two second connection electrodes arranged continuously are electrically connected with the first touch electrode block arranged along the first direction, and at least two second connection electrodes arranged continuously are electrically connected with the second touch electrode block arranged along the second direction;
and among the plurality of second connection electrodes arranged along the second direction, at least two second connection electrodes arranged continuously are electrically connected with the second touch electrode blocks arranged along the second direction, and at least two second connection electrodes arranged continuously are electrically connected with the first touch electrode blocks arranged along the first direction.
In an implementation manner of the first aspect, the plurality of touch electrode blocks includes a plurality of first touch electrode blocks and a plurality of second touch electrode blocks, and the first touch electrode blocks are electrically insulated from the second touch electrode blocks;
the first touch electrode blocks arranged along the first direction are electrically connected, and the second touch electrode blocks arranged along the second direction are electrically connected, wherein the second direction is intersected with the first direction;
along the second direction, at least part of adjacent second touch electrode blocks are electrically connected through the second connecting electrodes; and the extending direction of at least part of the second connecting electrodes for electrically connecting the adjacent second touch electrode blocks is perpendicular to the first direction.
In an implementation manner of the first aspect, along the second direction, any adjacent second touch electrodes are electrically connected through the second connection electrode; and the extending direction of any second connecting electrode for electrically connecting the adjacent second touch electrode blocks is perpendicular to the first direction.
In a second aspect, embodiments of the present application provide a display device including a display panel as provided in the first aspect.
In the display panel and the display device provided by the embodiments of the application, because the included angle between the second connection electrode and the length direction of the first opening is greater than 0 °, the second connection electrode is designed to be inclined relative to the length direction of the first opening. The shielding effect of the second connection electrode on the light emitted from the light emitting device at a large viewing angle can be reduced. And even if there is a process error such that there is overlap between the second connection electrode and the first opening, the overlapping area of the second connection electrode and the first opening is reduced relative to the prior art due to the oblique design of the second connection electrode. Therefore, the display panel provided by the embodiment of the application can effectively solve the problem of black dark lines under a large visual angle.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a display panel according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a display panel according to another embodiment of the present disclosure;
fig. 3 is a schematic cross-sectional view along the MN direction in fig. 1 and 2;
FIG. 4 is a graph showing the effect of the display panel according to the embodiment of the present application compared with that of the display panel in the prior art;
FIG. 5 is a schematic view of another display panel according to another embodiment of the present disclosure;
FIG. 6 is a schematic view of a display panel according to another embodiment of the present disclosure;
fig. 7 is a schematic view of a display panel according to another embodiment of the present disclosure;
FIG. 8 is a schematic view of another display panel according to another embodiment of the present disclosure;
FIG. 9 is a schematic diagram of a display panel according to still another embodiment of the present disclosure;
FIG. 10 is a schematic view of another display panel according to still another embodiment of the present disclosure;
FIG. 11 is a schematic view of a display panel according to still another embodiment of the present disclosure;
fig. 12 is a schematic layout diagram of a second connection electrode in a display panel according to an embodiment of the present application;
FIG. 13 is a schematic diagram illustrating the connection between the touch electrode block and the second connection electrode in the CC area of FIG. 12;
FIG. 14 is a schematic view showing the projection of the opening and the second connection electrode in the pixel defining layer of the display panel;
fig. 15 is a schematic diagram of a display device according to an embodiment of the present application.
[ detailed description ] of the invention
For a better understanding of the technical solutions of the present application, embodiments of the present application are described in detail below with reference to the accompanying drawings.
It should be understood that the described embodiments are merely some, but not all, of the embodiments of the present application. All other embodiments, based on the embodiments herein, which would be apparent to one of ordinary skill in the art without making any inventive effort, are intended to be within the scope of the present application.
The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
In the description of the present specification, it is to be understood that the terms "substantially," "approximately," "about," "approximately," "substantially," and the like as used in the claims and examples herein refer to values that are generally agreed upon, rather than exact, within reasonable process operating ranges or tolerances.
It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present application to describe openings, directions, touch electrode pads, connection electrodes, etc., these openings, directions, touch electrode pads, connection electrodes, etc. should not be limited to these terms. These terms are only used to distinguish openings, directions, touch electrode blocks, connection electrodes, etc. from each other. For example, a first direction may also be referred to as a second direction, and similarly, a second direction may also be referred to as a first direction, without departing from the scope of embodiments of the present application.
The applicant has provided a solution to the problems existing in the prior art by intensive studies.
Fig. 1 is a schematic diagram of a display panel according to an embodiment of the present application, fig. 2 is a schematic diagram of a display panel according to another embodiment of the present application, and fig. 3 is a schematic cross-sectional view along the MN direction in fig. 1 and 2.
The present application provides a display panel, please refer to fig. 1, fig. 2 and fig. 3, which includes a pixel defining layer 10 and a touch electrode layer 20.
The pixel defining layer 10 includes a plurality of first openings 11, a plurality of second openings 12, and a plurality of third openings 13, and the first openings 11, the second openings 12, and the third openings 13 may be used to provide light emitting devices. Referring to fig. 1 and 2, along the first direction X, the length of the first opening 11 is greater than the length of the second opening 12, and the length of the first opening 11 is greater than the length of the third opening 13. That is, in the embodiment of the present application, among the openings for accommodating the light emitting devices provided in the pixel defining layer 10, the first opening 11 has the longest length in the first direction X; and the length of the first opening 11 in the first direction X is greater than the length thereof in the second direction Y, which intersects the first direction X.
The touch electrode layer 20 is located on a side of the pixel defining layer 10 facing the light emitting surface of the display panel, and in the manufacturing process of the display panel, the manufacturing step of the touch electrode layer 20 is subsequent to the manufacturing step of the pixel defining layer 10. The touch electrode layer 20 includes a plurality of touch electrode blocks 21, wherein some adjacent touch electrode blocks 21 are electrically connected through a first connection electrode 22, and another adjacent touch electrode block 21 is electrically connected through a second connection electrode 31.
The first connection electrode 22 and the touch electrode layer 20 are disposed on the same layer, and the second connection electrode 31 and the touch electrode layer 20 are disposed on different layers. That is, part of adjacent touch electrode blocks 21 are electrically connected through the first connection electrode 22 of the same layer, and part of adjacent touch electrode blocks 21 are electrically connected in a jumper manner through the second connection electrode 31 of the different layer.
Wherein, the included angle between the extending direction of at least part of the second connecting electrodes 31 and the first direction X is a first included angle alpha, and 0 degrees is less than or equal to 90 degrees. That is, at least part of the second connection electrode 31 extends at an angle greater than 0 ° to the longitudinal direction of the first opening 11. The extending direction of the second connection electrode 31 may be understood as a direction in which a first end and a second end of the second connection electrode 31 are connected, where the first end is one end of the second connection electrode 31 connected to one touch electrode block, and the second end is the other end of the second connection electrode 31 connected to the other touch electrode block.
Fig. 4 is a graph showing the effect of the display panel according to the embodiment of the present application compared with that of the display panel in the prior art. In fig. 4, the (a) set of effect contrast charts and the (b) set of effect contrast charts are respectively the second connection electrode visibility effect diagrams at different viewing angles, wherein the viewing angle of the (a) set of effect contrast charts is smaller than that of the (b) set of effect contrast charts. (a) The left diagrams in the group (a) and the right diagrams in the group (b) both show the visibility effect schematic diagram of the second connection electrode in the prior art, and the right diagrams in the group (a) and the group (b) both show the visibility effect schematic diagram of the second connection electrode in the application.
The inventor analyzes the problem of black dark lines of a large visual angle of a display screen with the touch electrode blocks arranged on the same layer, and finds out the following problem. The black dark line is the second connection electrode 31' at a large viewing angle, i.e., the second connection electrode 31' blocks light emitted from the light emitting device in the first opening 11' at a certain large viewing angle, resulting in a black dark line. The closer the distance between the second connection electrode 31 'and the first opening 11', the more remarkable the black dark line is generated. The visual rule of the black dark line is that the larger the visual angle is, the more obvious the dark line is; the smaller the distance between the second connection electrode 31 'and the first opening 11', the more pronounced the dark line. When there is overlap of the second connection electrode 31 'with the first opening 11' due to a process error, a dark line is very noticeable.
The inventors have analyzed the above problems, and the main reason is that the length of the second connection electrode 31' is longer than that of the connection electrode on the same layer as the touch electrode block and the second connection electrode 31' is parallel to the length direction of the first opening 11 '. Therefore, the shielding effect of the second connection electrode 31 'on the light emitted by the light emitting device is more obvious under certain specific viewing angles, so that the second connection electrode 31' is easily recognized by human eyes under the specific viewing angles; and when there is a partial overlap of the second connection electrode 31' with the first opening 11', the risk of the second connection electrode 31' being recognized by the human eye increases.
Here, the reason why the shielding effect of the light emitted from the light emitting device by the second connection electrode 31' is obvious in the related art will be described with reference to fig. 4. As shown in the left diagram of the (a) group effect diagram and the (b) group effect diagram in fig. 4, since the extending direction of the second connection electrode 31' is parallel to the length direction of the first opening 11', the shielding effect of each position of the portion of the second connection electrode 31' adjacent to the first opening 11' on the light emitted by the light emitting device in the first opening 11' is the same under certain viewing angles. Then, the portions of the second connection electrode 31 'adjacent to the first opening 11' are completely visible under the viewing angles.
Based on the above, the inventor proposes a new display panel integrated with a touch function.
In the display panel provided in this embodiment of the present application, since the included angle between the extending direction of the second connection electrode 31 and the length direction of the first opening 11 is greater than 0 °, that is, the extending direction of the second connection electrode 31 is designed to be inclined with respect to the length direction of the first opening 11.
Referring to fig. 4, in the portion of the second connection electrode 31 above the left side of the first opening 11, the shielding effect of the different positions on the light emitted by the light emitting device in the first opening 11 is different if the distances between the different positions and the first opening 11 are different. Specifically, under one viewing angle, only the positions of the second connection electrode 31 within a certain range from the first opening 11 will have a shielding effect on the light emitted by the light emitting device in the first opening 11, i.e. only the positions can be recognized by human eyes.
For example, in a portion of the second connection electrode 31 adjacent to the first opening 11 in the view angles shown in (a) and (b) of fig. 4, the second connection electrode 31 at a specific position blocks light emitted from the light emitting device in the first opening 11, resulting in the second connection electrode 31 at the position being visible; the second connection electrode 31 at the other position cannot block the light emitted from the light emitting device in the first opening 11, and the second connection electrode 31 is substantially invisible.
Therefore, by making the second connection electrode 31 inclined with respect to the length direction of the first opening 11, the shielding effect of the second connection electrode 31 on the light emitted from the light emitting device at a large viewing angle can be reduced. Furthermore, even if there is a process error such that the second connection electrode 31 overlaps the first opening 11, the overlapping area of the two is reduced relative to the related art due to the oblique design of the second connection electrode 31. Therefore, the display panel provided by the embodiment of the application can effectively solve the problem of black dark lines under a large visual angle.
In addition, since the first opening 11, the second opening 12 and the third opening 13 each include edges parallel to the first direction X, the angle between the extending direction of the second connection electrode 31 and the first direction X is greater than 0 °, and the angle between the second connection electrode 31 and the length direction of the first opening 11, the length direction/width direction of the second opening 12 and the length direction/width direction of the third opening is greater than 0 °. Based on the above molecules, the shielding of the light emitted from the light emitting devices in the second opening 12, the third opening 13 by the second connection electrode 31 is also reduced.
And since the length/width of each of the second opening 12 and the third opening 13 is smaller than that of the first opening 11, the light emitted from the light emitting devices in the second opening 12 and the third opening 13 is not significantly blocked by the second connection electrode 31.
As shown in fig. 3, the light emitting device includes a light emitting material layer 41, and a first electrode 42 and a second electrode 43 disposed at both sides of the light emitting material layer 41. For example, the light emitting material layer may be an organic light emitting material layer, and one of the first electrode 42 and the second electrode 43 may be an anode and the other may be a cathode. In addition, the display panel may further include a pixel circuit CT electrically connected to the first electrode 42.
In the embodiment of the present application, light emitting devices of different colors may be disposed in the first opening 11, the second opening 12, and the third opening 13, respectively.
The second connection electrode 31 may be disposed between the pixel defining layer 10 and the touch electrode layer 20, or may be disposed on a side of the touch electrode layer 20 away from the pixel defining layer 10. The preparation step of the second connection electrode 31 follows the preparation step of the light emitting device.
In addition, as shown in fig. 3, the touch electrode layer 20 is located at a side of the light emitting device away from the pixel defining layer 10, i.e. the preparation step of the touch electrode layer 20 is after the preparation steps of the light emitting device and the pixel defining layer 10.
Alternatively, the touch electrode layer 20 may be disposed in the same layer as the second electrode 43 in the light emitting device, or the touch electrode layer 20 may multiplex the second electrode 43, where the second electrode 43 is close to the light emitting surface of the display panel relative to the second electrode 41.
In a technical solution corresponding to the present embodiment, please refer to fig. 1 and 2, the touch electrode blocks 21 arranged along the first direction X are electrically connected, and the touch electrode blocks 21 arranged along the second direction Y are electrically connected. The touch electrode blocks 21 arranged along the first direction X may form a touch sensing electrode or a touch driving electrode, the touch electrode blocks 21 arranged along the second direction Y may form a touch driving electrode or a touch sensing electrode, and the touch driving electrode is electrically insulated from the touch sensing electrode.
Specifically, referring to fig. 1 and 2, the plurality of touch electrode blocks 21 includes a plurality of first touch electrode blocks 21a and a plurality of second touch electrode blocks 21b, and the first touch electrode blocks 21a are electrically insulated from the second touch electrode blocks 21b. And the adjacent first touch electrode blocks 21a arranged along the first direction X are electrically connected to form a touch driving electrode or a touch sensing electrode, and the adjacent second touch electrode blocks 21b arranged along the second direction Y are electrically connected to form a touch sensing electrode or a touch driving electrode, and the touch driving electrode is electrically insulated from the touch sensing electrode.
In one embodiment of the present disclosure, as shown in fig. 1, the touch electrode blocks 21 arranged along the first direction X and adjacent to each other are electrically connected through the second connection electrode 31; the adjacent touch electrode blocks 21 arranged along the second direction Y are electrically connected through the first connection electrodes 22.
That is, as shown in fig. 1, among the first touch electrode blocks 21a arranged and electrically connected along the first direction X, adjacent first touch electrode blocks 21a are all electrically connected through the second connection electrode 31; among the second touch electrode blocks 21b arranged and electrically connected in the second direction Y, the adjacent second touch electrode blocks 21b are all electrically connected through the first connection electrode 22. The second direction Y may intersect the first direction X.
In this embodiment, the connection electrodes included in each touch driving electrode are all the first connection electrodes 22 or all the second connection electrodes 31, and the connection electrodes included in each touch sensing electrode are all the second connection electrodes 31 or all the first connection electrodes 22, so that the loads in each touch driving electrode are basically the same, and the loads in each touch sensing electrode are basically the same, thereby improving the uniformity of touch accuracy.
Fig. 5 is a schematic view of another display panel according to another embodiment of the present application.
In another embodiment of the present disclosure, as shown in fig. 2 and 5, a part of the touch electrode blocks 21 are arranged along the first direction X and adjacent to each other are electrically connected through the second connection electrode 31, and another part of the touch electrode blocks 21 are arranged along the first direction X and adjacent to each other are electrically connected through the first connection electrode 22. Part of the touch electrode blocks 21 are arranged along the second direction Y and adjacent to each other are electrically connected through the first connection electrodes 22, and the other part of the touch electrode blocks 21 are arranged along the second direction Y and adjacent to each other are electrically connected through the second connection electrodes 31.
When the second connection electrodes 31 are connected to the touch electrode blocks 21 arranged along the second direction Y, a smaller included angle exists between the extending directions of the second connection electrodes 31 and the second direction Y, and a larger included angle exists between the extending directions of the second connection electrodes 31 and the first direction X, so that the risk that the first opening is blocked by the second connection electrodes 31 can be further reduced, and the problem of black dark lines under a large viewing angle can be effectively improved.
The second connection electrodes 31 for electrically connecting the touch electrode blocks 21 arranged in the first direction X are denoted as 31a, and the second connection electrodes 31 for electrically connecting the touch electrode blocks 21 arranged in the second direction Y are denoted as 31b; the first connection electrodes for electrically connecting the touch electrode blocks 21 arranged in the first direction X are denoted as 22a, and the first connection electrodes for electrically connecting the touch electrode blocks 21 arranged in the second direction Y are denoted as 22b.
In one implementation manner of the present embodiment, as shown in fig. 2, among the plurality of second connection electrodes 31 arranged along the first direction X, the second connection electrodes 31 are used for connecting either the first touch electrode blocks 21a arranged adjacently along the first direction X or the second touch electrode blocks 21b arranged adjacently along the second direction Y;
that is, as shown in fig. 2, among the first touch electrode blocks 21a arranged in the first direction X, any adjacent first touch electrode block 21a is electrically connected through the first connection electrode 22a, or any adjacent first touch electrode block 21a is electrically connected through the second connection electrode 31 a. That is, among the plurality of rows of first touch electrode blocks 21a, the first touch electrode blocks 21a in the first touch electrode blocks 21a of a part of the rows are electrically connected to each other through the first connection electrodes 22a, and the first touch electrode blocks 21a in the first touch electrode blocks 21a of a part of the rows are electrically connected to each other through the second connection electrodes 31.
In this implementation manner, further, as shown in fig. 2, among the plurality of second connection electrodes 31 arranged along the second direction Y, the second connection electrodes 31 are used to connect either the first touch electrode blocks 21a arranged adjacently along the first direction X or the second touch electrode blocks 21b arranged adjacently along the second direction Y.
That is, as shown in fig. 2, among the second touch electrode blocks 21b arranged along the second direction Y, any adjacent second touch electrode block 21b is electrically connected through the first connection electrode 22b, or any adjacent second touch electrode block 21b is electrically connected through the second connection electrode 31 b. That is, among the plurality of rows of the second touch electrode blocks 21b, the second touch electrode blocks 21b in the second touch electrode blocks 21b of a part of the rows are electrically connected to each other through the first connection electrodes 22b, and the second touch electrode blocks 21b in the second touch electrode blocks 21b of a part of the rows are electrically connected to each other through the second connection electrodes 31 b.
The load compensation between the different touch driving electrodes is easy to realize, and the load compensation between the different touch sensing electrodes is also easy to realize.
In one implementation manner of the present embodiment, as shown in fig. 5, among the plurality of second connection electrodes 31 arranged along the first direction X, part of the second connection electrodes 31 are used for connecting the first touch electrode blocks 21a arranged adjacently along the first direction X, and part of the second connection electrodes 31 are used for connecting the second touch electrode blocks 21b arranged adjacently along the second direction Y; the second direction Y intersects the first direction X.
That is, as shown in fig. 5, among the first touch electrode blocks 21a arranged in the first direction X, a part of adjacent first touch electrode blocks 21a are electrically connected through the first connection electrode 22a, and a part of adjacent first touch electrode blocks 21a are electrically connected through the second connection electrode 31 a.
In this implementation manner, further, as shown in fig. 5, among the plurality of second connection electrodes 31 arranged along the second direction Y, part of the second connection electrodes 31 are used for connecting the second touch electrode blocks 21b arranged adjacently along the second direction Y, and part of the second connection electrodes 31 are used for connecting the first touch electrode blocks 21a arranged adjacently along the first direction X.
That is, as shown in fig. 5, among the second touch electrode blocks 21b arranged in the second direction Y, a part of adjacent second touch electrode blocks 21b are electrically connected through the first connection electrode 22b, and a part of adjacent second touch electrode blocks 21b are electrically connected through the second connection electrode 31 b.
The second connection electrodes 31 of each row and each column include both the second connection electrode 31a and the second connection electrode 31b, so that the problem of dark lines in a large viewing angle in each direction can be reduced.
Fig. 6 is a schematic view of another display panel according to another embodiment of the present application.
As shown in fig. 6, in one scheme corresponding to the present implementation manner, at least two second connection electrodes 31 arranged continuously among the plurality of second connection electrodes 31 arranged along the first direction X are electrically connected to the first touch electrode block 21a arranged along the first direction X, and at least two second connection electrodes 31 arranged continuously are electrically connected to the second touch electrode block 21b arranged along the second direction Y.
In this solution, further, as shown in fig. 6, at least two second connection electrodes 31 arranged continuously among the plurality of second connection electrodes 31 arranged along the second direction Y are electrically connected to the second touch electrode blocks 21b arranged along the second direction Y, and at least two second connection electrodes 31 arranged continuously are electrically connected to the first touch electrode blocks 21a arranged along the first direction X.
That is, as shown in fig. 6, in the first direction X, at least three first touch electrode blocks 21a arranged in succession are electrically connected by the second connection electrode 31; along the second direction Y, at least three second touch electrode blocks 21b arranged in succession are electrically connected by the second connection electrodes 31 b.
Fig. 7 is a schematic view of a display panel according to another embodiment of the present application, and fig. 8 is a schematic view of another display panel according to another embodiment of the present application.
In yet another embodiment of the present disclosure, as shown in fig. 7 and 8, at least part of the adjacent second touch electrode blocks 21b are electrically connected through the second connection electrodes 31b along the second direction Y; and the extending direction of at least part of the second connection electrodes 31b for electrically connecting the adjacent second touch electrode blocks 21b is perpendicular to the first direction X.
That is, as shown in fig. 7, at least a portion of the extending direction of the second connection electrode 31 is perpendicular to the length direction of the first opening 11, the proportion of the second connection electrode 31 that shields the light emitted from the light emitting device in the first opening 11 is further reduced, and the risk of overlapping the second connection electrode 31 with the first opening 11 is reduced.
In addition, as analyzed above, the lengths and widths of the second opening 12 and the third opening are smaller than the length of the first opening 11, so that the light emitted from the light emitting devices in the second opening 12 and the third opening 13 is not significantly blocked by the second connection electrode 31. Therefore, even if the extending direction of the second connection electrode 31 is perpendicular to the first direction X, no significant dark line problem occurs.
In one implementation of the present embodiment, as shown in fig. 8, any adjacent second touch electrodes 21b are electrically connected through second connection electrodes 31b along the second direction Y; and the extending direction of any second connection electrode 31b for electrically connecting the adjacent second touch electrode blocks 21b is perpendicular to the first direction X.
That is, as shown in fig. 8, all the extending directions of the second connection electrodes 31 are perpendicular to the length direction of the first opening 11, so that the proportion of the second connection electrodes 31 blocking the light emitted from the light emitting device in the first opening 11 is effectively reduced, and the risk of overlapping the second connection electrodes 31 with the first opening 11 is effectively reduced.
Fig. 9 is a schematic view of a display panel according to still another embodiment of the present application, fig. 10 is a schematic view of another display panel according to still another embodiment of the present application, and fig. 11 is a schematic view of yet another display panel according to still another embodiment of the present application.
In one embodiment of the present application, as shown in fig. 9 to 11, the extending directions of the adjacently arranged second connection electrodes 31 cross in the second direction Y, which may be perpendicular to the first direction X. By setting the extending directions of the plurality of second connection electrodes 31 arranged in the second direction Y to be different, the positions of the adjacent second connection electrodes 31 aligned in the first direction X need to be visible under different viewing angles, and accordingly, the positions of the adjacent second connection electrodes 31 aligned in the second direction Y need to be visible under different viewing angles. Therefore, the embodiment can effectively solve the problem of black dark lines in the large view angle of the first direction X.
Fig. 12 is a schematic layout diagram of a second connection electrode in a display panel according to an embodiment of the present application, and fig. 13 is a schematic connection diagram of a touch electrode block corresponding to a CC area in fig. 12 and the second connection electrode.
In one implementation of the present embodiment, please refer to fig. 12 and 13, in which the second connection electrodes 31 arranged along the second direction Y are arranged with the first minimum repeating units F1; the first minimum repeating unit F1 includes at least three second connection electrodes 31 therein, and the first minimum repeating unit F1 includes at least two second connection electrodes 31 extending in directions thereof.
For example, as shown in fig. 12 and 13, the first minimum repeating unit F1 includes four second connection electrodes 31, wherein the extending directions of the three second connection electrodes 31 are different from each other. The arrangement of the second connection electrodes 31 in the second direction Y with multiple extending directions may enable the positions aligned in the first direction X in the second connection electrodes 31 in the multiple extending directions to be visible under different viewing angles, and accordingly, the positions aligned in the second direction Y in the second connection electrodes 31 in the multiple extending directions need to be visible under different viewing angles. Therefore, the present embodiment can further solve the problem of black dark lines at a large viewing angle in the first direction X.
In one embodiment of the present application, as shown in fig. 9 to 11, the extending directions of the adjacently arranged second connection electrodes 31 intersect in the first direction X. By setting the extending directions of the plurality of second connection electrodes 31 arranged in the first direction X to be different, the black dark line problem at a large viewing angle in the second direction Y can be effectively solved.
In one implementation of the present embodiment, please refer to fig. 12 and 13, in which the second connection electrodes 31 arranged along the first direction X are arranged with the second minimum repeating units F2; the second minimum repeating unit F2 includes at least three second connection electrodes 31 therein, and the second minimum repeating unit F2 includes at least two second connection electrodes 31 extending in directions thereof.
For example, as shown in fig. 12 and 13, the second minimum repeating unit F2 includes four second connection electrodes 31, wherein the extending directions of the three second connection electrodes 31 are different from each other. The arrangement of the second connection electrodes 31 in the plurality of extending directions in the first direction X can further solve the black dark line problem at a large viewing angle in the second direction Y.
Fig. 14 is a schematic projection view of an opening in a pixel defining layer and a second connection electrode in a display panel.
In one embodiment of the present application, as shown in fig. 14, a plurality of first openings 11 are sequentially arranged along a first direction X; and among the plurality of first openings 11 arranged along the first direction X, gaps between part of adjacent first openings 11 are first gaps, and gaps between the other part of first openings 11 are second gaps. That is, gaps exist between the first openings 11 adjacently arranged in the first direction X, and the gaps include first gaps and second gaps having different widths.
The width of the first gap along the first direction X is larger than that of the second gap along the first direction X. For example, as shown in fig. 14, the width of the first gap in the first direction X is H1, and the width of the second gap in the first direction X is H2, H1 > H2.
In the thickness direction of the display panel, at least part of the projection of the second connection electrode 31 overlaps with the projection of the first gap. That is, the second connection electrode 31 passes over the gap between the two first openings 11 arranged in the first direction X, and the distance between the first openings 11 located at both sides of the second connection electrode 31 in the first direction X is relatively large.
The probability that the second connection electrode 31 disposed over the first gap overlaps the first opening 11 is greatly reduced and light emitted from the light emitting device is not blocked in a large range even if it is reduced, effectively solving the problem of a black dark line of a large viewing angle.
In one implementation of the present embodiment, in the thickness direction of the display panel, the projection of any of the second connection electrodes 31 overlaps with the projection of the first gap. That is, any of the second connection electrodes 31 passes over the gap between the two first openings 11 arranged in the first direction X, and the distances between the first openings 11 located on both sides of any of the second connection electrodes 31 in the first direction X are relatively large.
In an implementation manner of this embodiment, please refer to fig. 1, fig. 2, fig. 14 and fig. 3, the second openings 12 and the third openings 13 are alternately arranged along the first direction X, and then the first openings 11, the second openings 12 and the third openings 13 may be arranged in a "delta" shape.
And the light emitting device disposed in the first opening 11 is a blue light emitting device, the light emitting device disposed in the second opening 12 is a red light emitting device, and the light emitting device disposed in the third opening 13 is a green light emitting device. That is, the light emitting material layer 411 provided in the first opening 11 is a blue light emitting material layer, the light emitting material layer 412 provided in the second opening 12 is a red light emitting material layer, and the light emitting material layer 413 provided in the third opening 13 is a green light emitting material layer.
Fig. 15 is a schematic diagram of a display device according to an embodiment of the present application.
The embodiment of the application provides a display device, as shown in fig. 15, including the display panel 01 provided in any one of the embodiments. The display device provided in the embodiment of the application may be a mobile phone, and in addition, the display device provided in the embodiment of the application may also be a display device such as a computer, a television, and the like.
In the display panel and the display device provided by the embodiments of the application, because the included angle between the second connection electrode and the length direction of the first opening is greater than 0 °, the second connection electrode is designed to be inclined relative to the length direction of the first opening. The shielding effect of the second connection electrode on the light emitted from the light emitting device at a large viewing angle can be reduced. And even if there is a process error such that there is overlap between the second connection electrode and the first opening, the overlapping area of the second connection electrode and the first opening is reduced relative to the prior art due to the oblique design of the second connection electrode. Therefore, the display panel provided by the embodiment of the application can effectively solve the problem of black dark lines under a large visual angle.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the invention to the precise form disclosed, and any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A display panel, comprising:
the pixel definition layer comprises a plurality of first openings, a plurality of second openings and a plurality of third openings; the length of the first opening is longer than that of the second opening along the first direction, and the length of the first opening is longer than that of the third opening;
the touch electrode layer is positioned on one side of the pixel definition layer facing the light emitting surface of the display panel; the touch electrode layer comprises a plurality of touch electrode blocks, wherein part of adjacent touch electrode blocks are electrically connected through a first connecting electrode, and the other part of adjacent touch electrode blocks are electrically connected through a second connecting electrode;
the first connecting electrode and the touch electrode layer are arranged on the same layer, and the second connecting electrode and the touch electrode layer are arranged on different layers; at least part of the second connecting electrodes have an included angle alpha between the extending direction and the first direction, wherein alpha is more than 0 degrees and less than or equal to 90 degrees;
the extending directions of the second connecting electrodes adjacently arranged along the second direction are crossed, and the second direction is perpendicular to the first direction; the second connection electrodes arranged along the second direction are arranged in a first minimal repeating unit; the first minimal repeating unit comprises at least three second connecting electrodes, and the first minimal repeating unit comprises at least two second connecting electrodes in extending directions; and/or the number of the groups of groups,
the extending directions of the second connecting electrodes adjacently arranged along the first direction are crossed; the second connection electrodes arranged in the first direction are arranged in a second minimum repeating unit; the second minimum repeating unit comprises at least three second connection electrodes, and the second minimum repeating unit comprises at least two second connection electrodes in extending directions.
2. The display panel of claim 1, wherein a plurality of the first openings are arranged in sequence along the first direction; among the plurality of first openings arranged along the first direction, gaps between part of adjacent first openings are first gaps, and gaps between the other part of first openings are second gaps;
wherein the width of the first gap along the first direction is greater than the width of the second gap along the first direction; along the thickness direction of the display panel, at least part of the projection of the second connection electrode overlaps with the projection of the first gap.
3. The display panel according to claim 2, wherein a projection of any of the second connection electrodes overlaps with a projection of the first gap in a thickness direction of the display panel.
4. The display panel of claim 2, wherein the second openings alternate with the third openings along the first direction; and a blue light emitting device is arranged in the first opening, a red light emitting device is arranged in the second opening, and a green light emitting device is arranged in the third opening.
5. The display panel of claim 1, wherein the plurality of touch electrode tiles includes a plurality of first touch electrode tiles and a plurality of second touch electrode tiles, the first touch electrode tiles being electrically isolated from the second touch electrode tiles;
among the plurality of second connection electrodes arranged along the first direction, part of the second connection electrodes are used for connecting the first touch electrode blocks adjacently arranged along the first direction, and part of the second connection electrodes are used for connecting the second touch electrode blocks adjacently arranged along the second direction; the second direction intersects the first direction;
among the plurality of second connection electrodes arranged along the second direction, part of the second connection electrodes are used for connecting the second touch electrode blocks arranged adjacently along the second direction, and part of the second connection electrodes are used for connecting the first touch electrode blocks arranged adjacently along the first direction.
6. The display panel of claim 5, wherein the display panel comprises,
at least two second connection electrodes arranged continuously in the plurality of second connection electrodes arranged along the first direction are electrically connected with the first touch electrode blocks arranged along the first direction, and at least two second connection electrodes arranged continuously in the plurality of second connection electrodes are electrically connected with the second touch electrode blocks arranged along the second direction;
and among the plurality of second connection electrodes arranged along the second direction, at least two second connection electrodes arranged continuously are electrically connected with the second touch electrode blocks arranged along the second direction, and at least two second connection electrodes arranged continuously are electrically connected with the first touch electrode blocks arranged along the first direction.
7. The display panel of claim 1, wherein the plurality of touch electrode tiles includes a plurality of first touch electrode tiles and a plurality of second touch electrode tiles, the first touch electrode tiles being electrically isolated from the second touch electrode tiles;
the first touch electrode blocks arranged along the first direction are electrically connected, and the second touch electrode blocks arranged along the second direction are electrically connected, wherein the second direction is intersected with the first direction;
along the second direction, at least part of adjacent second touch electrode blocks are electrically connected through the second connecting electrodes; and the extending direction of at least part of the second connecting electrodes for electrically connecting the adjacent second touch electrode blocks is perpendicular to the first direction.
8. The display panel of claim 7, wherein any adjacent second touch electrodes are electrically connected by the second connection electrode along the second direction; and the extending direction of any second connecting electrode for electrically connecting the adjacent second touch electrode blocks is perpendicular to the first direction.
9. A display device comprising a display panel according to any one of claims 1-8.
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| CN202111466194.0A CN114153328B (en) | 2021-12-03 | 2021-12-03 | Display panel and display device |
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