CN110308823B - Special-shaped display panel and display device - Google Patents
Special-shaped display panel and display device Download PDFInfo
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- CN110308823B CN110308823B CN201910597713.3A CN201910597713A CN110308823B CN 110308823 B CN110308823 B CN 110308823B CN 201910597713 A CN201910597713 A CN 201910597713A CN 110308823 B CN110308823 B CN 110308823B
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- touch electrode
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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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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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 a special-shaped display panel and a display device, relates to the technical field of display, and aims to enable touch sensitivity of a special-shaped display area and that of a normal display area in the special-shaped display panel to be consistent. The special-shaped display panel comprises a special-shaped display area and a normal display area; the special-shaped display area and the normal display area are both provided with touch units, and the touch units comprise a first touch electrode and a second touch electrode which are mutually insulated; the area of the first touch electrode included in the touch control unit located in the special-shaped display area is smaller than that of the first touch electrode included in the touch control unit located in the normal display area; and/or the area of the second electrode included in the touch control unit positioned in the special-shaped display area is smaller than the area of the second touch control electrode included in the touch control unit positioned in the normal display area; the display area further comprises a regulating structure, and the regulating structure is used for enabling the mutual capacitances of the touch control units located in the special-shaped display area and the normal display area to be the same.
Description
[ field of technology ]
The invention relates to the technical field of display, in particular to a special-shaped display panel and a display device.
[ background Art ]
Along with the rapid development of display technology and man-machine interaction technology, a special-shaped display panel with a touch function is increasingly widely applied. The special-shaped display panel is a display panel with a special shape which is reformed on the basis of the traditional display panel, and the design of the special-shaped display panel can enable the product equipped with the special-shaped display panel to be more attractive. The conventional special-shaped display panel mainly comprises a rounded rectangle and other shapes as shown in fig. 1.
The touch control units are designed in the special-shaped display panel, and are generally designed to be uniformly distributed in the plane where the whole special-shaped display panel is located. However, since the shape of the special-shaped display area is different from that of the normal display area, the shape of the touch control unit positioned in the special-shaped display area is different from that of the touch control unit positioned in the normal display area, and further, the touch control sensitivity of the special-shaped display area is different from that of the normal display area, so that the touch control experience effect of the special-shaped display panel is poor.
[ invention ]
In view of this, the embodiment of the invention provides a special-shaped display panel and a display device, which are used for enabling the touch sensitivity of a special-shaped display area and a normal display area in the special-shaped display panel to be consistent.
In one aspect, an embodiment of the present invention provides a special-shaped display panel, including: a special-shaped display area and a normal display area;
the special-shaped display area and the normal display area are both provided with touch units, and the touch units comprise a first touch electrode and a second touch electrode which are mutually insulated;
the area of the first touch electrode included in the touch unit located in the special-shaped display area is smaller than that of the first touch electrode included in the touch unit located in the normal display area;
and/or the number of the groups of groups,
the area of the second touch electrode included in the touch unit located in the special-shaped display area is smaller than that of the second touch electrode included in the touch unit located in the normal display area;
the special-shaped display area further comprises a regulating structure, and the regulating structure is used for enabling the mutual capacitance of the touch control unit located in the special-shaped display area to be identical to the mutual capacitance of the touch control unit located in the normal display area.
Optionally, the first touch electrode and the second touch electrode in the special-shaped display area and the normal display area are arranged on the same layer.
Optionally, the area of the first touch electrode located in the special-shaped display area is smaller than the area of the first touch electrode located in the normal display area; the regulation structure comprises a first compensation electrode, and the first compensation electrode is connected with the first touch electrode positioned in the special-shaped display area; the sum of the areas of the first compensation electrode and the first touch electrode positioned in the special-shaped display area is equal to the area of the first touch electrode positioned in the normal display area;
and/or the number of the groups of groups,
the area of the second touch electrode positioned in the special-shaped display area is smaller than that of the second touch electrode positioned in the normal display area; the regulation structure comprises a second compensation electrode, and the second compensation electrode is connected with the second touch electrode positioned in the special-shaped display area; and the sum of the areas of the second compensation electrode and the second touch electrode positioned in the special-shaped display area is equal to the area of the second touch electrode positioned in the normal display area.
Optionally, a first insulating layer is further included between the first compensation electrode and the first touch electrode; the first insulating layer comprises a via hole, and the first compensation electrode is connected with the first touch electrode positioned in the special-shaped display area through the via hole;
and/or the number of the groups of groups,
a first insulating layer is further arranged between the second compensation electrode and the second touch electrode; the first insulating layer comprises a via hole, and the second compensation electrode is connected with the second touch electrode in the special-shaped display area through the via hole.
Optionally, the first insulating layer includes an organic layer, and the organic layer includes the via.
Optionally, the orthographic projection of the first compensation electrode on the plane of the special-shaped display panel overlaps with the orthographic projection of the second touch electrode located in the special-shaped display area on the plane of the special-shaped display panel;
and/or the number of the groups of groups,
and the orthographic projection of the second compensation electrode on the plane of the special-shaped display panel overlaps with the orthographic projection of the first touch electrode positioned in the special-shaped display area on the plane of the special-shaped display panel.
Optionally, the material of the first compensation electrode and/or the second compensation electrode includes any one of indium tin oxide, indium zinc oxide or indium gallium zinc oxide.
Optionally, the distance between the orthographic projections of the first touch electrode and the second touch electrode in the special-shaped display area on the plane where the special-shaped display panel is located is smaller than the distance between the orthographic projections of the first touch electrode and the second touch electrode in the normal display area on the plane where the special-shaped display panel is located;
and/or the number of the groups of groups,
and the distance between the first touch electrode and the second touch electrode in the special-shaped display area is smaller than the distance between the first touch electrode and the second touch electrode in the normal display area along the thickness direction of the special-shaped display panel.
Optionally, along the thickness direction of the special-shaped display panel, a distance between the first touch electrode and the second touch electrode in the special-shaped display area is smaller than a distance between the first touch electrode and the second touch electrode in the normal display area;
the first touch electrode and the second touch electrode which are positioned in the special-shaped display area are arranged on the same layer;
and a second insulating layer is arranged between the first touch electrode and the second touch electrode in the normal display area.
Optionally, the touch units are arranged in an array along a first direction and a second direction, the first touch electrodes of two adjacent touch units are connected along the first direction, and the second touch electrodes of two adjacent touch units are connected along the second direction.
Optionally, a second insulating layer is included between the first touch electrode and the second touch electrode in the special-shaped display area and the normal display area;
and the thickness of the second insulating layer positioned in the normal display area is larger than that of the second insulating layer positioned in the special-shaped display area.
Optionally, the touch units are arranged in an array along a first direction and a second direction, the first touch electrodes of two adjacent touch units are connected along the first direction, and the second touch electrodes of two adjacent touch units are connected along the second direction.
Optionally, the first touch electrode is a touch sensing electrode, and the second touch electrode is a touch driving electrode; or, the first touch electrode is a touch driving electrode, and the second touch electrode is a touch sensing electrode.
On the other hand, the embodiment of the invention provides a display device which comprises the display panel.
In a capacitive touch display panel, the occurrence position of touch is generally determined by detecting the variation of the mutual capacitance of a touch unit before and after touch. If the area of the touch unit located in the special-shaped display area is smaller, the mutual capacitance of the touch unit located in the area and the change amount of the mutual capacitance caused when the area performs the touch operation are smaller, and the touch operation in the area may not be detected. According to the embodiment of the invention, the regulation and control structure is arranged in the special-shaped display area, when the special-shaped display panel is subjected to touch operation, the regulation and control structure can compensate the mutual capacitance of the touch control units positioned in the special-shaped display area, so that the mutual capacitance of the touch control units positioned in the special-shaped display area is increased to be consistent or tends to be consistent with the mutual capacitance of the touch control units positioned in the normal display area, and then when the special-shaped display area and the normal display area are subjected to the same touch operation, the change amount of the mutual capacitance of the touch control units positioned in the special-shaped display area is correspondingly increased to be consistent or tends to be consistent with the change amount of the mutual capacitance of the touch control units positioned in the normal display area. Therefore, the touch operation in the special-shaped display area can be detected more easily due to the arrangement of the regulation structure, namely, the touch sensitivity of the special-shaped display area can be improved, and the touch sensitivity difference between the special-shaped display area and the normal display area in the special-shaped display panel is balanced.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, 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 invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a prior art special-shaped display panel;
FIG. 2 is an enlarged schematic view of region 10' of FIG. 1;
fig. 3 is an enlarged schematic view of a portion of a position of a special-shaped display panel according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view taken along line AA' of FIG. 3;
FIG. 5 is a schematic diagram of a touch principle;
FIG. 6 is a schematic diagram of a second touch principle;
FIG. 7 is a further schematic cross-sectional view taken along line AA' of FIG. 3;
FIG. 8 is a further schematic cross-sectional view taken along line AA' of FIG. 3;
FIG. 9 is another cross-sectional schematic view along BB' of FIG. 3;
FIG. 10 is another cross-sectional view taken along line AA' of FIG. 3;
FIG. 11 is another cross-sectional view taken along line AA' of FIG. 3;
fig. 12 is a schematic diagram of a display device according to an embodiment of the invention.
[ detailed description ] of the invention
For a better understanding of the technical solution of the present invention, the following detailed description of the embodiments of the present invention refers to the accompanying drawings.
It should be understood that the described embodiments are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the 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 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.
It should be understood that although the terms first, second, etc. may be used to describe the touch electrodes in embodiments of the present invention, these touch electrodes should not be limited to these terms. These terms are only used to distinguish touch electrodes from each other. For example, a first touch electrode may also be referred to as a second touch electrode, and similarly, a second touch electrode may also be referred to as a first touch electrode without departing from the scope of embodiments of the present invention.
In carrying out the embodiments of the present invention, the inventors have found that, as shown in fig. 1 and 2, fig. 1 is a schematic view of a special-shaped display panel in the prior art, and fig. 2 is an enlarged schematic view of a region 10 'in fig. 1, in which a plurality of driving units 2' are disposed. Since the shape of the special-shaped display area 11' is different from that of the normal display area 12', the shape of the touch unit 2' located in the special-shaped display area 11' is different from that of the touch unit 2' located in the normal display area 12', and the mutual capacitance of the touch units 2' located in the special-shaped display area 11' and the normal display area 12' is affected. In a capacitive touch display panel, the occurrence position of touch is generally determined by detecting the variation of the mutual capacitance of a touch unit before and after touch. If the area of the touch unit located in the special-shaped display area is smaller, the mutual capacitance of the touch unit located in the area and the amount of change of the mutual capacitance caused when the area performs the touch operation are smaller, so that the touch operation in the area may not be detected, resulting in a difference in touch sensitivity between the special-shaped display area 11 'and the normal display area 12'.
Based on this, the embodiment of the present invention provides a special-shaped display panel, as shown in fig. 3, fig. 3 is an enlarged schematic view of a part of positions of the special-shaped display panel provided by the embodiment of the present invention, where the special-shaped display panel includes a special-shaped display area 11 and a normal display area 12; the special-shaped display area 11 and the normal display area 12 are both provided with a touch unit 2, and the touch unit 2 comprises a first touch electrode 21 and a second touch electrode 22 which are mutually insulated and crossed.
Specifically, as shown in fig. 3, the area of the first touch electrode 21 included in the touch unit 2 located in the special-shaped display area 11 is smaller than the area of the first touch electrode 21 included in the touch unit 2 located in the normal display area 12; the area of the second touch electrode 22 included in the touch unit 2 located in the special-shaped display area 11 is smaller than the area of the second touch electrode 22 included in the touch unit 2 located in the normal display area 12.
As shown in fig. 4, fig. 4 is a schematic cross-sectional view along AA' of fig. 3, wherein the special-shaped display area 11 further includes a regulating structure 3, and the regulating structure 3 is used for compensating the mutual capacitance of the touch unit 2 located in the special-shaped display area 11.
According to the embodiment of the invention, the regulation and control structure 3 is arranged in the special-shaped display area 11, when the special-shaped display panel is subjected to touch operation, the regulation and control structure 3 can compensate the mutual capacitance of the touch unit 2 positioned in the special-shaped display area 11, so that the mutual capacitance of the touch unit 2 positioned in the special-shaped display area 11 is consistent or tends to be consistent with the mutual capacitance of the touch unit 2 positioned in the normal display area 12, and therefore, when the special-shaped display area and the normal display area are subjected to the same touch operation, the change amount of the mutual capacitance of the touch unit positioned in the special-shaped display area is correspondingly increased to be consistent or tends to be consistent with the change amount of the mutual capacitance of the touch unit positioned in the normal display area. Therefore, the arrangement of the regulation structure can enable the touch operation occurring in the special-shaped display area to be detected more easily, namely, the touch sensitivity of the special-shaped display area can be improved, and the touch sensitivity difference between the special-shaped display area 11 and the normal display area 12 in the special-shaped display panel is balanced.
In the above description of the special-shaped display panel provided by the embodiment of the invention, the area of the first touch electrode 21 included in the touch unit 2 located in the special-shaped display area 11 is smaller than the area of the first touch electrode 21 included in the touch unit 2 located in the normal display area 12, and the area of the second touch electrode 22 included in the touch unit 2 located in the special-shaped display area 11 is smaller than the area of the second touch electrode 22 included in the touch unit 2 located in the normal display area 12, in fact, according to different designs of the shapes of the touch unit 2 and the special-shaped display area 11, only the area of the first touch electrode 21 included in the touch unit 2 located in the special-shaped display area 11 may be smaller than the area of the first touch electrode 21 included in the touch unit 2 located in the normal display area 12. Or, only the area of the second touch electrode 22 included in the touch unit 2 located in the special-shaped display area 11 is smaller than the area of the second touch electrode 22 included in the touch unit 2 located in the normal display area 12, and in both cases, the setting of the regulation structure 3 located in the special-shaped display area 11 can play a role in compensating the mutual capacitance of the touch unit 2 located in the special-shaped display area 11.
For example, as shown in fig. 3, the touch units 2 may be arranged in an array in the special-shaped display panel along the first direction x and the second direction y, so that the touch units 2 cover the special-shaped display panel. As shown in fig. 3, the first touch electrodes 21 of two adjacent touch units 2 are connected along the first direction x, and the second touch electrodes 22 of two adjacent touch units 2 are connected along the second direction y. And the first touch electrode 21 and the second touch electrode 22 of the same touch unit 2 are in insulating intersection.
Alternatively, in the implementation, the first touch electrode 21 may be used as a touch sensing electrode, and the second touch electrode 22 may be used as a touch driving electrode. Alternatively, the first touch electrode 21 is used as a touch driving electrode, and the second touch electrode 22 is used as a touch sensing electrode. Taking the first touch electrode 21 as a touch sensing electrode and the second touch electrode 22 as a touch driving electrode as an example, when the special-shaped display panel is touched, a touch driving signal is provided to the second touch electrode 22. Under the action of the touch driving signal, as shown in fig. 5, fig. 5 is a schematic diagram of a touch principle, and the first touch electrode 21 and the second touch electrode 22 are coupled to form a mutual capacitance. When a finger touches the special-shaped display panel, as shown in fig. 6, fig. 6 is a schematic diagram of a second touch principle, an electric field between the first touch electrode 21 and the second touch electrode 22 is changed, so that a mutual capacitance between the two is changed, and a signal output by the first touch electrode 21 is correspondingly changed, so that a touch position is determined based on the change.
As shown in fig. 5, the mutual capacitance C between the first touch electrode 21 and the second touch electrode 22 is equal toThe positive correlation is that epsilon is the dielectric constant of the medium between the first touch electrode 21 and the second touch electrode 22, d is the distance between the first touch electrode 21 and the second touch electrode 22, and S is the orthographic projection area of the first touch electrode 21 and the second touch electrode 22 on the plane of the special-shaped display panel.
In order to compensate the mutual capacitance of the touch unit 2 located in the special-shaped display area 11, if the mutual capacitance is reduced by reducing the distance d between the first touch electrode 21 and the second touch electrode 22, in the current process of manufacturing the touch electrode, the short circuit between the first touch electrode and the second touch electrode is easily caused if the distance between the adjacent first touch electrode and second touch electrode is too small due to the limitation of the process exposure capability. Therefore, in the embodiment of the present invention, on the basis that the first touch electrode 21 and the second touch electrode 22 are not shorted, the distance between the first touch electrode 21 and the second touch electrode 22 in the special-shaped display area 11 may be designed to be the smallest within the allowable process range, and the distance between the first touch electrode 21 and the second touch electrode 22 in the normal display area 12 may be correspondingly increased to balance the mutual capacitance between the special-shaped display area 11 and the first touch electrode 21 and the second touch electrode 22 in the normal display area 12.
Alternatively, when the first touch electrode 21 and the second touch electrode 22 located in the abnormal display area and the normal display area are both arranged in the same layer, when the area of the first touch electrode 21 located in the abnormal display area 11 is smaller than the area of the first touch electrode 21 located in the normal display area 12, as shown in fig. 4, the embodiment of the present invention may set the adjusting structure 3 to include the first compensation electrode 31, where the first compensation electrode 31 is connected to the first touch electrode 21 located in the abnormal display area 11; the sum of the areas of the first compensation electrode 31 and the first touch electrode 21 located in the special-shaped display area 11 is equal to the area of the first touch electrode 21 located in the normal display area 12, which is equivalent to increasing the area of the electrode forming the mutual capacitance with the second touch electrode 22 located in the special-shaped display area 11, so that the mutual capacitance of the touch unit 2 located in the special-shaped display area 11 can be compensated, and the touch sensitivity located in the special-shaped display area 11 and the touch sensitivity located in the normal display area 12 can be consistent when the touch operation is performed. Moreover, in this way, the first compensation electrode 31 is disposed with a larger degree of freedom, and when the mutual capacitance formed by the first touch electrode 21 and the second touch electrode 22 located in the abnormal display area 11 differs greatly from that located in the normal display area 12, the area of the first compensation electrode 31 can be disposed to be larger. That is, by providing the first compensation electrode 31, the adjustable range of the mutual capacitance can be increased. In addition, the first compensation electrode 31 is arranged without adjusting the first touch electrode 21 and the second touch electrode 22 in the special-shaped display area 11 on the basis of balancing the mutual capacitance between the first touch electrode 21 and the second touch electrode 22 in the normal display area 12, so that defects such as short-circuiting of the first touch electrode 21 and the second touch electrode 22 can be avoided.
As shown in fig. 4, a first insulating layer 41 is further disposed between the first compensation electrode 31 and the first touch electrode 21; the first insulating layer 41 is provided with a via hole 410, and the first compensation electrode 31 is connected to the first touch electrode 21 located in the special-shaped display area 11 through the via hole 410.
Similarly, when the area of the second touch electrode 22 located in the special-shaped display area 11 is smaller than the area of the second touch electrode 22 located in the normal display area 12, as shown in fig. 7, fig. 7 is a schematic view of a further cross section along AA' in fig. 3; the embodiment of the present invention may set the above-mentioned control structure 3 to include the second compensation electrode 32, where the second compensation electrode 32 is connected to the second touch electrode 22 located in the special-shaped display area 11, and the sum of the areas of the second compensation electrode 32 and the second touch electrode 22 located in the special-shaped display area 11 is equal to the area of the second touch electrode 22 located in the normal display area 11, which is equivalent to increasing the area of the electrode forming a mutual capacitance with the first touch electrode 21 located in the special-shaped display area 11, and also can compensate the mutual capacitance of the touch unit 2 located in the special-shaped display area 11, so that the touch sensitivity in the special-shaped display area 11 is consistent with the touch sensitivity in the normal display area 12. Furthermore, the provision of the second compensation electrode 32 can also increase the adjustable range of the mutual capacitance. In addition, the arrangement of the second compensation electrode 32 does not need to adjust the first touch electrode 21 and the second touch electrode 22 located in the special-shaped display area 11 on the basis of balancing the mutual capacitance between the first touch electrode 21 and the second touch electrode 22 located in the normal display area 12, so that defects such as short-circuiting of the first touch electrode 21 and the second touch electrode 22 can be avoided.
As shown in fig. 7, a first insulating layer 41 is disposed between the second compensation electrode 32 and the second touch electrode 22; the first insulating layer 41 includes a via 410, and the second compensation electrode 32 is connected to the second touch electrode 22 located in the special-shaped display area 11 through the via 410.
Of course, when the area of the first touch electrode 21 located in the special-shaped display area 11 is smaller than the area of the first touch electrode 21 located in the normal display area 12, and the area of the second touch electrode 22 located in the special-shaped display area 11 is smaller than the area of the second touch electrode 22 located in the normal display area 12, as shown in fig. 8, fig. 8 is a schematic view of a further cross section along AA' in fig. 3, the above-mentioned control structure 3 may be configured to include a first compensation electrode 31 and a second compensation electrode 32, where the first compensation electrode 31 is connected to the first touch electrode 21 located in the special-shaped display area 11 according to an embodiment of the present invention; the sum of the areas of the first compensation electrode 31 and the first touch electrode 21 located in the abnormal display area 11 is equal to the area of the first touch electrode 21 located in the normal display area 12. The second compensation electrode 32 is connected to the second touch electrode 22 located in the special-shaped display area 11, and the sum of the areas of the second compensation electrode 32 and the second touch electrode 22 located in the special-shaped display area 11 is equal to the area of the second touch electrode 22 located in the normal display area 11. That is, the mutual capacitance of the touch units 2 located in the abnormal display area 11 is compensated from both the first touch electrode 21 and the second touch electrode 22 at the same time, so that the touch sensitivity in the abnormal display area 11 is consistent with that in the normal display area 12.
As shown in fig. 8, when the first compensation electrode 31 and the second compensation electrode 32 are simultaneously disposed, the embodiment of the invention ensures the accuracy of the touch operation by disposing the first compensation electrode 31 and the second compensation electrode 32 on different layers, so as to avoid the crossing of the first compensation electrode 31 and the second compensation electrode 32. Specifically, as shown in fig. 8, a first insulating layer 41 is disposed between the first compensation electrode 31 and the first touch electrode 21, and between the second compensation electrode 32 and the second touch electrode 22; the two first insulating layers 41 are respectively provided with a via hole 410, and the first compensation electrode 31 is connected with the first touch electrode 21 located in the special-shaped display area 11 through one of the via holes 410. The second compensation electrode 32 is connected to the second touch electrode 22 located in the shaped display area 11 through another via 410.
For example, the first insulating layer 41 may be formed using an organic layer, and the via hole 410 may be formed in the organic layer by performing an etching operation on the first insulating layer 41. Compared with the method for forming the through holes in the inorganic layer, the method for forming the through holes in the organic layer can reduce the process difficulty.
Optionally, as shown in fig. 4 and fig. 8, when the first compensation electrode 31 is disposed, the orthographic projection of the first compensation electrode 31 on the plane of the special-shaped display panel overlaps with the orthographic projection of the second touch electrode 22 located in the special-shaped display area 11 on the plane of the special-shaped display panel, and by disposing the first compensation electrode 31 overlapping with the second touch electrode 22, a capacitance can be formed at a portion opposite to the first compensation electrode 31 and the second touch electrode 22, so as to further compensate for the mutual capacitance between the first touch electrode 21 and the second touch electrode 22.
As shown in fig. 7 and 8, when the second compensation electrode 32 is disposed, the orthographic projection of the second compensation electrode 32 on the plane of the special-shaped display panel overlaps with the orthographic projection of the first touch electrode 21 located in the special-shaped display area 11 on the plane of the special-shaped display panel, and by disposing the second compensation electrode 32 overlapping with the first touch electrode 21, a capacitance can be formed at a portion opposite to the first compensation electrode 31 and the first touch electrode 21, so as to further compensate the mutual capacitance of the first touch electrode 21 and the second touch electrode 22.
For example, the material of the first compensation electrode 31 and/or the second compensation electrode 32 may include a transparent metal oxide, for example, any one of indium tin oxide, indium zinc oxide or indium gallium zinc oxide, so as to ensure the light transmittance of the special-shaped display area on the basis of compensating the mutual capacitance of the touch unit 2 located in the special-shaped display area 11.
The above description of the embodiment of the present invention is given by taking the case that the first touch electrode 21 and the second touch electrode 22 located in the special-shaped display area 11 and the normal display area 12 are arranged in the same layer, and actually, the first touch electrode 21 and the second touch electrode 22 located in the normal display area may be arranged in different layers. As described above, the mutual capacitance C between the first touch electrode 21 and the second touch electrode 22 is equal toIn the positive correlation, the distance d between the first touch electrode 21 and the second touch electrode 22 is the distance between the two in the spatial range, so whether the first touch electrode 21 and the second touch electrode 22 are arranged in the same layer or in different layers, the embodiment of the invention can set the distance of the orthographic projection of the first touch electrode 21 and the second touch electrode 22 located in the special-shaped display area 11 on the plane of the special-shaped display panel to be smaller than the distance of the orthographic projection of the first touch electrode 21 and the second touch electrode 22 located in the normal display area 12 on the plane of the special-shaped display panel, that is, the mutual capacitance between the first touch electrode 21 and the second touch electrode 22 is increased by reducing the distance between the first touch electrode 21 and the second touch electrode 22 on the plane of the special-shaped display panel.
Alternatively, in the thickness direction of the special-shaped display panel, the distance between the first touch electrode 21 and the second touch electrode 22 in the special-shaped display area 11 may be set smaller than the distance between the first touch electrode 21 and the second touch electrode 22 in the normal display area 12, that is, the mutual capacitance between the first touch electrode 21 and the second touch electrode 22 may be increased by decreasing the distance between the two in the thickness direction of the special-shaped display panel.
As shown in fig. 9, fig. 9 is another schematic cross-sectional view along BB 'of fig. 3, and in the embodiment of the present invention, the first touch electrode 21 and the second touch electrode 22 located in the normal display area 12 may be arranged in different layers, as shown in fig. 10, fig. 10 is another schematic cross-sectional view along AA' of fig. 3, and the first touch electrode 21 and the second touch electrode 22 located in the special-shaped display area 11 are arranged in the same layer, so that the distance between the first touch electrode 21 and the second touch electrode 22 located in the special-shaped display area 11 is smaller than the distance between the first touch electrode 21 and the second touch electrode 22 located in the normal display area 12 along the thickness direction of the special-shaped display panel, so as to compensate the mutual capacitance of the touch unit 2 located in the special-shaped display area 11. Alternatively, as shown in fig. 11, fig. 11 is another schematic cross-sectional view along AA' in fig. 3, in an embodiment of the present invention, the first touch electrode 21 and the second touch electrode 22 located in the special-shaped display area 11 may be arranged in different layers, and in combination with fig. 9 and fig. 11, along the thickness direction of the special-shaped display panel, the distance d1 between the first touch electrode 21 and the second touch electrode 22 located in the special-shaped display area 11 is made smaller than the distance d2 between the first touch electrode 21 and the second touch electrode 22 located in the normal display area 12, so as to balance the mutual capacitance of the touch units located in the special-shaped display area 11 and the mutual capacitance of the touch units located in the normal display area 12.
As illustrated in fig. 9, a second insulating layer 62 for insulating and separating the first touch electrode 21 and the second touch electrode 22 is disposed between the first touch electrode 21 and the second touch electrode 22 of the normal display area 12. The embodiment of the invention can adjust the distance between the first touch electrode 21 and the second touch electrode 22 along the thickness direction of the special-shaped display panel by adjusting the thickness of the second insulating layer 62. For example, as shown in fig. 9 and 11, when the above-described second insulating layer 62 is provided in both the special-shaped display region 11 and the normal display region 12, the thickness d1 of the second insulating layer 62 located in the special-shaped display region 11 may be set smaller and the thickness d2 of the second insulating layer 62 located in the normal display region 12 may be set larger. Since the second insulating layer 62 can be formed by a conventional deposition process, the thickness of the second insulating layer can be adjusted in a wide range by adjusting parameters such as deposition time and deposition rate, and thus the adjustable range of the mutual capacitance of the touch unit located in the special-shaped display area 11 can be improved in this way, and the process is simple and easy to operate. Further, since the first touch electrode 21 and the second touch electrode 22 are separated by the second insulating layer 62, it is not necessary to adjust the first touch electrode 21 and the second touch electrode 22 located in the abnormal display region 11 by this adjustment method, and thus, it is possible to avoid a defect such as a short circuit between the first touch electrode 21 and the second touch electrode 22.
For example, as shown in fig. 9, when the second insulating layer 62 between the first touch electrode 21 and the second touch electrode 22 is disposed in the normal display area 12, the embodiment of the present invention may dispose the corner 7 on the second insulating layer 62, where the disposition of the corner 7 can increase the distance L1 of the orthographic projection of the first touch electrode 21 and the second touch electrode 22 on the surface where the display panel is located, so that the mutual capacitance of the touch unit located in the normal display area 12 can approach the mutual capacitance of the touch unit located in the special-shaped display area 11, that is, balance the difference of the mutual capacitances of the touch units located in the special-shaped display area 11 and the normal display area 12.
The embodiment of the present invention further provides a display device, as shown in fig. 12, and fig. 12 is a schematic diagram of the display device provided in the embodiment of the present invention, where the display device includes the above-mentioned special-shaped display panel 100, and the specific structure of the special-shaped display panel 100 has been described in detail in the above embodiment, which is not repeated herein. Of course, the display device shown in fig. 12 is only a schematic illustration, and the display device may be any electronic apparatus having a display function, such as a mobile phone, a tablet computer, a notebook computer, an electronic book, or a television.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the invention.
Claims (12)
1. A special-shaped display panel, characterized in that the display area of the special-shaped display panel comprises: a special-shaped display area and a normal display area;
the special-shaped display area and the normal display area are both provided with touch units, each touch unit comprises a first touch electrode and a second touch electrode which are mutually insulated, the first touch electrode and the second touch electrode which are positioned in the special-shaped display area and the normal display area are arranged on the same layer, the display area further comprises a regulating structure, and the regulating structure comprises a first compensation electrode or a second compensation electrode;
the area of the first touch electrode included in the touch unit located in the special-shaped display area is smaller than that of the first touch electrode included in the touch unit located in the normal display area, and the first compensation electrode is connected with the first touch electrode located in the special-shaped display area; the sum of the areas of the first compensation electrode and the first touch electrode positioned in the special-shaped display area is equal to the area of the first touch electrode positioned in the normal display area;
and/or the number of the groups of groups,
the area of the second touch electrode included in the touch unit located in the special-shaped display area is smaller than that of the second touch electrode included in the touch unit located in the normal display area, and the second compensation electrode is connected with the second touch electrode located in the special-shaped display area; the sum of the areas of the second compensation electrode and the second touch electrode positioned in the special-shaped display area is equal to the area of the second touch electrode positioned in the normal display area;
the regulation and control structure is used for enabling the mutual capacitance of the touch control unit located in the special-shaped display area to be the same as the mutual capacitance of the touch control unit located in the normal display area.
2. The shaped display panel of claim 1, wherein the display panel is configured to display a plurality of images,
the regulating structure comprises a first insulating layer;
the first insulating layer is positioned between the first compensation electrode and the first touch electrode; the first insulating layer comprises a via hole, and the first compensation electrode is connected with the first touch electrode positioned in the special-shaped display area through the via hole;
and/or the number of the groups of groups,
the first insulating layer is positioned between the second compensation electrode and the second touch electrode; the first insulating layer comprises a via hole, and the second compensation electrode is connected with the second touch electrode in the special-shaped display area through the via hole.
3. The shaped display panel of claim 2, wherein the display panel is configured to display the image of the display panel,
the first insulating layer includes an organic layer including the via.
4. The shaped display panel of claim 2, wherein the display panel is configured to display the image of the display panel,
the orthographic projection of the first compensation electrode on the plane of the special-shaped display panel overlaps with the orthographic projection of the second touch electrode positioned in the special-shaped display area on the plane of the special-shaped display panel;
and/or the number of the groups of groups,
and the orthographic projection of the second compensation electrode on the plane of the special-shaped display panel overlaps with the orthographic projection of the first touch electrode positioned in the special-shaped display area on the plane of the special-shaped display panel.
5. The shaped display panel of claim 1, wherein the display panel is configured to display a plurality of images,
the material of the first compensation electrode and/or the second compensation electrode comprises any one of indium tin oxide, indium zinc oxide or indium gallium zinc oxide.
6. The shaped display panel of claim 1, wherein the display panel is configured to display a plurality of images,
the distance of the orthographic projection of the first touch electrode and the second touch electrode, which are positioned in the special-shaped display area, on the plane where the special-shaped display panel is positioned is smaller than the distance of the orthographic projection of the first touch electrode and the second touch electrode, which are positioned in the normal display area, on the plane where the special-shaped display panel is positioned;
and/or the number of the groups of groups,
and the distance between the first touch electrode and the second touch electrode in the special-shaped display area is smaller than the distance between the first touch electrode and the second touch electrode in the normal display area along the thickness direction of the special-shaped display panel.
7. The shaped display panel of claim 6, wherein the display panel comprises,
and the distance between the first touch electrode and the second touch electrode in the special-shaped display area is smaller than the distance between the first touch electrode and the second touch electrode in the normal display area along the thickness direction of the special-shaped display panel.
8. The shaped display panel of claim 7, wherein the display panel comprises,
the first touch electrode and the second touch electrode which are positioned in the special-shaped display area are arranged on the same layer;
and a second insulating layer is arranged between the first touch electrode and the second touch electrode in the normal display area.
9. The shaped display panel of claim 7, wherein the display panel comprises,
the first touch electrode and the second touch electrode which are positioned in the special-shaped display area and the normal display area respectively comprise a second insulating layer;
and the thickness of the second insulating layer positioned in the normal display area is larger than that of the second insulating layer positioned in the special-shaped display area.
10. The special-shaped display panel according to claim 1, wherein the touch units are arranged in an array along a first direction and a second direction, the first touch electrodes of two adjacent touch units are connected along the first direction, and the second touch electrodes of two adjacent touch units are connected along the second direction.
11. The shaped display panel of claim 1, wherein the first touch electrode is a touch sensing electrode and the second touch electrode is a touch driving electrode; or, the first touch electrode is a touch driving electrode, and the second touch electrode is a touch sensing electrode.
12. A display device comprising the shaped display panel of any one of claims 1-11.
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| EP4053680A4 (en) | 2019-10-29 | 2022-11-09 | BOE Technology Group Co., Ltd. | Touch substrate and touch display device |
| CN111949158B (en) * | 2020-08-11 | 2022-03-01 | 昆山国显光电有限公司 | Touch display panel and touch display device |
| CN113253872B (en) * | 2021-05-24 | 2023-11-28 | 武汉华星光电技术有限公司 | Touch panel and display device |
| CN113495650B (en) * | 2021-06-11 | 2022-08-12 | 武汉天马微电子有限公司 | Touch substrate, display panel and display device |
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