CN107957816B - Organic light-emitting display panel and display device - Google Patents
Organic light-emitting display panel and display device Download PDFInfo
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- CN107957816B CN107957816B CN201711422420.9A CN201711422420A CN107957816B CN 107957816 B CN107957816 B CN 107957816B CN 201711422420 A CN201711422420 A CN 201711422420A CN 107957816 B CN107957816 B CN 107957816B
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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
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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
Abstract
The embodiment of the invention provides an organic light-emitting display panel and a display device. The organic light emitting display panel includes: the two adjacent first touch electrodes are electrically connected with each other through a first connecting electrode to form a first touch sensing unit, the two adjacent second touch electrodes are electrically connected with each other through a second connecting electrode to form a second touch sensing unit, the two adjacent first touch electrodes are spaced by the second touch electrodes, and the first connecting electrodes are in a circular ring shape or an elliptical ring shape; the first connecting electrode and the second touch electrode are overlapped, the second touch electrode is provided with a hollow area, and after the design is adopted, the reliability of the touch function of the organic light-emitting display panel is favorably improved, and the touch performance of the organic light-emitting display panel is favorably enhanced.
Description
Technical Field
The invention relates to the technical field of display, in particular to an organic light-emitting display panel and a display device.
Background
In the prior art, a display panel includes a plurality of first touch sensing units and a plurality of second touch sensing units, where each of the first touch sensing units includes a first touch electrode and a bridge crossing wire, and two adjacent first touch electrodes are electrically connected by the bridge crossing wire crossing the second touch sensing unit. The display panel can receive the effect of stress in the use, and this stress can be used on the cross-bridge wire, and in prior art, use a cross-bridge wire electricity between two first touch-control electrodes to connect, after the cross-bridge wire breaks under the effect of stress, can lead to display panel's touch function to become invalid, consequently above-mentioned design makes display panel's touch function's reliability relatively poor.
Disclosure of Invention
Embodiments of the present invention provide an organic light emitting display panel and a display device, so as to solve the problem in the prior art that the reliability of the touch function of the display panel is poor.
In one aspect, an embodiment of the present invention provides an organic light emitting display panel, including:
the touch control device comprises a first touch control sensing unit and a second touch control sensing unit, wherein the first touch control sensing unit is provided with a plurality of first touch control electrodes arranged along a first direction and first connecting electrodes, and two adjacent first touch control electrodes are electrically connected with each other through the first connecting electrodes; and
the second touch sensing unit is provided with a plurality of second touch electrodes and second connecting electrodes, the second touch electrodes are arranged along a second direction, and two adjacent second touch electrodes are electrically connected with each other through the second connecting electrodes; two adjacent first touch electrodes are spaced by the second touch electrode;
the first connecting electrode is in a circular ring shape or an elliptical ring shape;
and a hollow area is arranged on the second touch electrode at the overlapping position of the first connecting electrode and the second touch electrode.
In another aspect, an embodiment of the present invention provides a display device, which includes the organic light emitting display panel described above.
Any one of the above technical solutions has the following beneficial effects:
in the embodiment of the invention, the two adjacent first touch electrodes are electrically connected with each other through the first connecting electrode, the two first touch electrodes are separated by the second touch electrode, and the first connecting electrode is in a circular ring shape or an elliptical ring shape, after the design is adopted, two channels are included between the two adjacent first touch electrodes, so that the two adjacent first touch electrodes can still normally work even if one channel fails under the action of stress, and further the reliability of the touch function of the display panel can be improved, and compared with the design of using a bridge wire in the prior art after the first connecting electrode is designed into the circular ring shape or the elliptical ring shape, the embodiment of the invention can increase the cross-sectional area of the channel between the two adjacent first touch electrodes, thereby the impedance between the two adjacent first touch electrodes can be reduced, and further the touch performance of the display panel can be enhanced, meanwhile, in the embodiment of the invention, the second touch electrode is provided with the hollow area at the overlapping position of the first connecting electrode and the second touch electrode, and after the design is adopted, the capacitance formed between the first connecting electrode and the second touch sensing unit can be reduced, so that the influence of the second touch sensing unit on the signal in the first touch sensing unit is reduced, and the hollow area can enhance the mutual capacitance between the first touch electrode and the second touch electrode to a certain extent, so that the touch performance of the display panel can be further improved after the design is adopted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic top view illustrating an organic light emitting display panel according to an embodiment of the present invention;
fig. 2 is a schematic top view illustrating another organic light emitting display panel according to an embodiment of the present invention;
fig. 3 is a schematic top view illustrating another organic light emitting display panel according to an embodiment of the present invention;
fig. 4 is a schematic top view illustrating another organic light emitting display panel according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view taken along direction BB' in FIG. 3 or FIG. 4;
fig. 6 is a schematic top view illustrating another organic light emitting display panel according to an embodiment of the present invention;
fig. 7 is a schematic top view illustrating another organic light emitting display panel according to an embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view along direction AA' of FIG. 1 or FIG. 2;
fig. 9 is a schematic top view illustrating another organic light emitting display panel according to an embodiment of the present invention;
fig. 10 is a schematic top view illustrating another organic light emitting display panel according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention 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 type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be noted that the terms "upper", "lower", "left", "right", and the like used in the description of the embodiments of the present invention are used in the angle shown in the drawings, and should not be construed as limiting the embodiments of the present invention. In addition, in this context, it is also to be understood that when an element is referred to as being "on" or "under" another element, it can be directly formed on "or" under "the other element or be indirectly formed on" or "under" the other element through an intermediate element.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Fig. 1 (only illustrating a case where the first connection electrode has a circular ring shape) is a schematic top view of an organic light emitting display panel according to an embodiment of the present invention, and fig. 2 (only illustrating a case where the first connection electrode has an elliptical ring shape) is a schematic top view of another organic light emitting display panel according to an embodiment of the present invention, as shown in fig. 1 and 2, the organic light emitting display panel includes: first touch sensing units 1 having a plurality of first touch electrodes 11 arranged in a first direction X and first connection electrodes 12, in each first touch sensing unit 1, any adjacent two first touch electrodes 11 being electrically connected to each other through the first connection electrodes 12; and a second touch sensing unit 2 having a plurality of second touch electrodes 21 and second connection electrodes 22, the plurality of second touch electrodes 21 being arranged along the second direction Y, in each second touch sensing unit 2, any two adjacent second touch electrodes 21 being electrically connected to each other through the second connection electrodes 22; two adjacent first touch electrodes 11 are separated by a second touch electrode 21; the first connecting electrode 12 is circular or elliptical; at the overlapping position of the first connecting electrode 12 and the second touch electrode 21, the second touch electrode 21 is provided with a hollow area 23.
Specifically, as shown in fig. 1 and 2, the first touch electrodes 11 and the second touch electrodes 21 are distributed in an array, two adjacent first touch electrodes 11 are electrically connected to each other through the first connection electrodes 12, the first touch electrodes 11 and the first connection electrodes 12 located in the same column form the first touch sensing unit 1, two adjacent second touch electrodes 21 are electrically connected to each other through the second connection electrodes 22, and the second touch electrodes 21 and the second connection electrodes 22 located in the same row form the second touch sensing unit 2, wherein the first touch sensing unit 1 extends along the first direction X and is arranged along the second direction Y, the second touch sensing unit 2 extends along the second direction Y and is arranged along the first direction X, and the two adjacent first touch electrodes 11 are spaced apart by the second touch electrodes 21, that is, the two adjacent first touch electrodes 11 are spaced apart by the second touch sensing unit 2, the first touch sensing unit 1 and the second touch sensing unit 2 are insulated from each other.
As shown in fig. 1 and fig. 2, taking the working manner of the first touch electrode 11 and the second touch electrode 21 as an example of mutual capacitance, the first touch electrode 11 is a driving electrode for receiving a touch driving signal, the second touch electrode 21 is a sensing electrode for outputting a touch sensing signal, and the organic light emitting display panel can perform its touch function through the touch driving signal and the touch sensing signal, so as to determine the touch position of a finger on the organic light emitting display panel.
As shown in fig. 1 and 2, the first connecting electrode 12 is in a circular ring shape or an elliptical ring shape, after two adjacent first touch electrodes 11 are electrically connected with each other through the first connecting electrode 12, two channels can be formed between the two adjacent first touch electrodes 11, and after the above design is adopted, because two channels are included between the two adjacent first touch electrodes 11, and the two adjacent first touch electrodes 11 transmit electric signals through the two channels, even if one channel fails under stress, i.e. one side of the first connecting electrode 12 is broken, the two adjacent first touch electrodes 11 can still transmit electric signals through the other channel, so that the first touch sensing unit 1 can continue to normally operate, thereby improving the reliability of the touch function of the organic light emitting display panel, i.e. two channels are arranged between the two adjacent first touch electrodes 11, even if one channel fails, the first touch sensing unit 1 can still keep working normally, and compared with the prior art (two first touch electrodes are electrically connected by using one bridge wire), in the embodiment of the present invention, the first connecting electrode 12 is in a circular or elliptical ring shape, that is, it is equivalent to two wires arranged between two adjacent first touch electrodes 11, so as to increase the cross-sectional area of the channel between two adjacent first touch electrodes 11, that is, reduce the impedance between two adjacent first touch electrodes 11, and further enhance the touch performance of the organic light emitting display panel.
As shown in fig. 1 and 2, the second touch electrode 21 is provided with a hollow area 23, the orthographic projection of the portion of the first connection electrode 12 on the organic light emitting display panel is located in the orthographic projection of the hollow area 23 on the organic light emitting display panel, that is, at the overlapping position of the first connection electrode 12 and the second touch electrode 21, the second touch electrode 21 is provided with the hollow area 23, after the design is adopted, the capacitance formed between the first connection electrode 12 and the second touch sensing unit 2 can be reduced, so that the mutual influence between the second touch sensing unit 2 and the first touch sensing unit 1 can be reduced, the attenuation amount of the touch signal can be further reduced, the touch performance of the organic light emitting display panel can be improved, and the hollow area 23 can enhance the mutual capacitance between the first touch electrode 11 and the second touch electrode 21 to a certain extent, that is, the parallel capacitance formed by the first touch electrode 11 and the second touch electrode 21 can be increased, therefore, the fringe field between the first touch electrode 11 and the second touch electrode 21 is enhanced, and therefore the hollow area 23 can further improve the touch performance of the organic light emitting display panel.
Alternatively, as shown in FIG. 1, the diameter of the circular ring is L, L < 150 μm, and as shown in FIG. 2, the major axis of the elliptical ring is A, A < 150 μm.
Specifically, as shown in fig. 1, when the first connecting electrode 12 is in a circular ring shape, and the diameter of the circular ring shape is L, and L is less than 150 μm, the circular ring shape may not form a visible pattern when the organic light emitting display panel displays, which is beneficial to improving the display effect of the organic light emitting display panel.
Alternatively, as shown in fig. 1 and 2, the line width of the first connection electrode 12 is H, H < 10 μm.
Specifically, as shown in fig. 1 and 2, the line width of the first connection electrode 12 is designed to be H, where H is less than 10 μm, so that the influence of the first connection electrode 12 on the transmittance of the organic light emitting display panel can be reduced, and the display effect of the organic light emitting display panel can be improved.
Alternatively, as shown in fig. 1 and 2, the material of the first connection electrode 12 includes: molybdenum and/or aluminum.
Specifically, as shown in fig. 1 and 2, when the first connection electrode 12 is made of a molybdenum and/or aluminum material, it is beneficial to reduce the impedance of the first connection electrode 12 itself, so that the first connection electrode 12 affects the touch signal, and thus the touch performance of the organic light emitting display panel is improved.
Alternatively, fig. 3 (only illustrating the case that the first connection electrode has a circular ring shape) is a schematic top view of another organic light emitting display panel provided by an embodiment of the present invention, fig. 4 (only illustrating the case that the first connection electrode has an elliptical ring shape) is a schematic top view of another organic light emitting display panel provided by an embodiment of the present invention, and fig. 5 is a schematic cross-sectional view along a direction BB' in fig. 3 or fig. 4, as shown in fig. 3, fig. 4, and fig. 5, the organic light emitting display panel includes: a pixel defining layer 3, the pixel defining layer 3 including a plurality of openings 31 distributed in an array; a plurality of sub-pixel units 4, wherein the orthographic projection of each sub-pixel unit 4 on the organic light-emitting display panel is positioned in the orthographic projection of the corresponding opening 31 on the organic light-emitting display panel; the plurality of sub-pixel units 4 includes a plurality of first sub-pixel units 41, and an orthogonal projection of the first connection electrode 12 on the organic light emitting display panel overlaps with an orthogonal projection of a portion of each of the first sub-pixel units 41 and the pixel defining layer 3 on the organic light emitting display panel.
Specifically, as shown in fig. 3, 4 and 5, the pixel defining layer 3 is used to define the area where each sub-pixel unit 4 is located, that is, the pixel defining layer 3 includes a plurality of openings 31 distributed in an array, one sub-pixel unit 4 is disposed in each opening 31, different sub-pixel units 4 are separated from each other by the pixel defining layer 3, and the sub-pixel units 4 emit light through the corresponding openings 31, so that the organic light emitting display panel displays an image.
As shown in fig. 3 and 4, since the first connecting electrode 12 is circular or elliptical, compared to the case that the cross-bridge wire is linear in the prior art, the covering area of the first connecting electrode 12 on one first sub-pixel unit 41 is smaller, and the overlapping portion of the first connecting electrode 12 and the pixel defining layer 3 is more, compared to the prior art, the first connecting electrode 12 in the embodiment of the present invention has less influence on the transmittance of the organic light emitting display panel, and a visible pattern is not easily formed on the organic light emitting display panel, so that the embodiment of the present invention is beneficial to improving the display effect of the organic light emitting display panel.
Alternatively, fig. 6 (only illustrating the case where the first connection electrode has a circular ring shape) is a schematic top view of another organic light emitting display panel according to an embodiment of the present invention, and fig. 7 (only illustrating the case where the first connection electrode has an elliptical ring shape) is a schematic top view of another organic light emitting display panel according to an embodiment of the present invention, as shown in fig. 6 and 7, the first connection electrode 12 has a mesh structure.
Specifically, as shown in fig. 6 and 7, after the first connection electrode 12 is designed to have a grid structure, the first connection electrode 12 is beneficial to reducing the influence on the transmittance of the organic light emitting display panel, that is, the design can improve the transmittance of the organic light emitting display panel, thereby being beneficial to improving the display effect of the display panel.
Optionally, fig. 8 is a schematic cross-sectional view along the direction AA' in fig. 1 or fig. 2, and fig. 8 shows that the first touch electrode 11 and the second touch sensing unit 2 are disposed on the same layer; the organic light emitting display panel further includes: the insulating layer 5 is positioned between the film layers where the first touch electrode 11 and the second touch sensing unit 2 are positioned and the film layer where the first connecting electrode 12 is positioned; the first connection electrode 12 is connected to the first touch electrode 11 through a via hole penetrating the insulating layer 5.
Specifically, as shown in fig. 8, the first touch electrodes 11 and the second touch sensing units 2 are disposed on the same layer, that is, the first touch electrodes 11, the second touch electrodes 21 and the second connecting electrodes 22 are disposed on the same layer, the first connecting electrodes 12 electrically connect two adjacent first touch electrodes 11 together in a bridge-crossing manner, and in order to insulate the first touch sensing units 1 and the second touch sensing units 2 from each other, an insulating layer 5 is disposed between a film layer where the first touch electrodes 11 and the second touch sensing units 2 are located and a film layer where the first connecting electrodes 12 are located, so that the first touch sensing units 1 and the second touch sensing units 2 normally perform their functions.
Alternatively, fig. 9 (only illustrating the case that the first connection electrode has a circular ring shape) is a schematic top view of another organic light emitting display panel provided in the embodiment of the present invention, and fig. 10 (only illustrating the case that the first connection electrode has an elliptical ring shape) is a schematic top view of another organic light emitting display panel provided in the embodiment of the present invention, as shown in fig. 9 and 10, the first connection electrode 12 is in point connection with the first touch electrode 11 through at least two via holes 6 penetrating through the insulating layer 5.
Specifically, as shown in fig. 9 and 10, when the first connecting electrode 12 electrically connects two adjacent first touch electrodes 11 through at least two via holes 6 penetrating through the insulating layer 5, compared with the design of one via hole, it is beneficial to reduce the impedance at the joint of the via hole 6, and it is beneficial to reduce the probability of poor contact between the first connecting electrode 12 and the first touch electrode 11 due to process reasons when the via hole 6 is manufactured, and at the same time, it is beneficial to reduce the probability of breakage between the first connecting electrode 12 and the first touch electrode 11 due to breakage at the via hole 6, and therefore, after the above design is adopted, it is beneficial to improve the reliability of the organic light emitting display panel.
Fig. 11 is a schematic structural diagram of a display device according to an embodiment of the present invention, and as shown in fig. 11, the display device includes the organic light emitting display panel 100. The operation principle of the organic light emitting display panel 100 is described in detail above, and will not be described in detail herein.
It should be noted that the display device according to the embodiment of the present invention may include, but is not limited to, a Personal Computer (PC), a Personal Digital Assistant (PDA), a wireless handheld device, a Tablet Computer (Tablet Computer), a mobile phone, an MP3 player, an MP4 player, a smart watch, an in-vehicle display, and the like.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. An organic light emitting display panel, comprising:
the touch control device comprises a first touch control sensing unit and a second touch control sensing unit, wherein the first touch control sensing unit is provided with a plurality of first touch control electrodes arranged along a first direction and first connecting electrodes, and two adjacent first touch control electrodes are electrically connected with each other through the first connecting electrodes; and
the second touch sensing unit is provided with a plurality of second touch electrodes and second connecting electrodes, the second touch electrodes are arranged along a second direction, and two adjacent second touch electrodes are electrically connected with each other through the second connecting electrodes; two adjacent first touch electrodes are spaced by the second touch electrode;
the first connecting electrode is in a circular ring shape or an elliptical ring shape;
at the overlapping position of the first connecting electrode and the second touch electrode, the second touch electrode is provided with a hollow area;
the first touch electrode and the second touch sensing unit are arranged on the same layer;
the organic light emitting display panel further includes:
the insulating layer is positioned between the film layers where the first touch electrode and the second touch sensing unit are positioned and the film layer where the first connecting electrode is positioned;
the first connecting electrode is connected with the first touch electrode through a via hole penetrating through the insulating layer.
2. The organic light emitting display panel of claim 1,
the diameter of the circular ring is L, and L is less than 150 mu m;
the long axis of the elliptical ring is A, and A is less than 150 mu m.
3. The organic light emitting display panel of claim 1, wherein the first connection electrode has a line width of H < 10 μm.
4. The organic light emitting display panel of claim 3, wherein the material of the first connection electrode comprises: molybdenum and/or aluminum.
5. The organic light emitting display panel according to claim 1, wherein the organic light emitting display panel comprises:
a pixel defining layer including a plurality of openings distributed in an array;
a plurality of sub-pixel units, wherein the orthographic projection of each sub-pixel unit on the organic light-emitting display panel is positioned in the orthographic projection of the corresponding opening on the organic light-emitting display panel;
the plurality of sub-pixel units include a plurality of first sub-pixel units, and an orthogonal projection of the first connection electrode on the organic light emitting display panel overlaps with an orthogonal projection of a portion of each of the first sub-pixel units and the pixel defining layer on the organic light emitting display panel.
6. The organic light emitting display panel of claim 1, wherein the first connection electrode is a mesh structure.
7. The organic light emitting display panel of claim 6, wherein the first connection electrode is connected to the first touch electrode through at least two via holes penetrating the insulating layer.
8. A display device comprising the organic light emitting display panel according to any one of claims 1 to 7.
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| CN108762589A (en) * | 2018-05-30 | 2018-11-06 | 武汉华星光电半导体显示技术有限公司 | touch panel, touch panel preparation method and touch device |
| US10754484B2 (en) * | 2018-05-30 | 2020-08-25 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Touch panel, manufacturing method for touch panel and touch device |
| WO2020097755A1 (en) * | 2018-11-12 | 2020-05-22 | Boe Technology Group Co., Ltd. | Touch substrate, touch control display apparatus, and method of fabricating touch substrate |
| CN110007804B (en) * | 2019-04-16 | 2022-02-22 | 京东方科技集团股份有限公司 | Touch module and display device |
| CN112313610B (en) * | 2019-05-15 | 2024-04-02 | 京东方科技集团股份有限公司 | Touch unit, manufacturing method thereof, touch structure and display device |
| US10854545B1 (en) * | 2019-09-26 | 2020-12-01 | Nanya Technology Corporation | Anti-fuse structure |
| CN113126825B (en) * | 2021-05-13 | 2024-01-26 | 武汉天马微电子有限公司 | Display panel and display device |
| CN113238683B (en) * | 2021-05-27 | 2024-02-09 | 武汉天马微电子有限公司 | Display panel and display device |
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