CN115328334A - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN115328334A
CN115328334A CN202210993503.8A CN202210993503A CN115328334A CN 115328334 A CN115328334 A CN 115328334A CN 202210993503 A CN202210993503 A CN 202210993503A CN 115328334 A CN115328334 A CN 115328334A
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CN
China
Prior art keywords
electrode
electrodes
touch
branch
display area
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Pending
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CN202210993503.8A
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Chinese (zh)
Inventor
于泉鹏
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Shanghai Tianma Microelectronics Co Ltd
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Shanghai Tianma Microelectronics Co Ltd
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Priority to CN202210993503.8A priority Critical patent/CN115328334A/en
Publication of CN115328334A publication Critical patent/CN115328334A/en
Pending legal-status Critical Current

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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
    • G06F3/0412—Digitisers structurally integrated in a display
    • 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
    • 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

Abstract

The embodiment of the invention discloses a display panel and a display device. The display panel includes first display area and second display area, and the second display area includes a plurality of non-light transmission district and light transmission district, and the display panel includes: a substrate base plate; a plurality of light emitting elements located on one side of the substrate base plate; the touch control function layer comprises a plurality of touch control electrodes arranged in an array and a plurality of dummy electrodes; the touch control electrodes comprise first touch control electrodes and second touch control electrodes, the projections of the second display areas on the substrate base plate are positioned between the projections of two adjacent first trunk electrodes arranged along the second direction on the substrate base plate and/or between the projections of two adjacent second trunk electrodes arranged along the first direction, and the projections of the second display areas on the substrate base plate are not overlapped with the projections of at least one of the first touch control electrodes, the second touch control electrodes and the dummy electrodes on the substrate base plate. The embodiment of the invention provides a design of a touch functional layer to improve the touch performance of a display panel.

Description

Display panel and display device
Technical Field
The present invention relates to display technologies, and in particular, to a display panel and a display device.
Background
In recent years, organic Light-Emitting diodes (OLEDs) have become a very popular flat panel display industry in the sea and abroad, which is known as the next generation of "star" flat panel display technology, mainly because OLEDs have the characteristics of self-luminescence, wide viewing angle, fast response time, high luminous efficiency, thin panel thickness, capability of manufacturing large-sized and bendable panels, simple manufacturing process, low cost, and the like. With the development of display technology, full-screen occupies almost a large percentage of the consumer market and is a hot topic in the development direction. For example, off-screen camera products have been used.
In addition, the touch screen technology has gradually replaced the key technology as the mainstream technology of the mobile terminal and the like. The touch screen technology is a technology in which when a finger, a pen, or the like contacts a touch screen mounted on the front end of a display device, a touched position (in the form of coordinates) is detected and transmitted to a CPU, thereby specifying input information. However, for a camera product under a screen, a setting area of the camera needs higher light transmittance, and in the prior art, a touch electrode in the setting area of the camera and nearby the setting area of the camera is generally and directly removed, so that a touch blind area is large.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, wherein the display panel provides a design of a touch functional layer so as to improve the touch performance of the display panel.
In a first aspect, an embodiment of the present invention provides a display panel, including a first display area and a second display area, where the second display area includes a plurality of non-transmissive areas and transmissive areas, and the display panel includes:
a substrate base plate;
a plurality of light emitting elements located on one side of the substrate base;
the touch functional layer is positioned on one side of the light-emitting element, which is far away from the substrate, and comprises a plurality of touch electrodes arranged in an array manner and a plurality of dummy electrodes;
the touch electrodes comprise first touch electrodes and second touch electrodes, the first touch electrodes are electrically connected along a first direction, the first touch electrodes comprise first trunk electrodes extending along the first direction, the second touch electrodes are electrically connected along a second direction, the second touch electrodes comprise second trunk electrodes extending along the second direction, and the first direction and the second direction are crossed;
the projections of the second display areas on the substrate base plate are located between the projections of the adjacent two first trunk electrodes arranged along the second direction on the substrate base plate, and/or the projections of the second display areas on the substrate base plate are located between the projections of the adjacent two second trunk electrodes arranged along the first direction, and the projections of the second display areas on the substrate base plate are not overlapped with the projections of at least one of the first touch electrode, the second touch electrode and the dummy electrode on the substrate base plate.
In a second aspect, an embodiment of the present invention further provides a display device, including the display panel.
The display panel provided by the embodiment of the invention comprises a first display area and a second display area, wherein the second display area comprises a plurality of non-light-transmitting areas and light-transmitting areas, and the light-transmitting areas can transmit external light and enable a light sensing element (such as a camera) under a screen to work; the display panel includes: a substrate base plate; a plurality of light emitting elements located on one side of the substrate base plate; the touch control functional layer is positioned on one side of the light-emitting element, which is far away from the substrate, and comprises a plurality of touch control electrodes arranged in an array and a plurality of dummy electrodes; the touch control electrodes comprise first touch control electrodes and second touch control electrodes, the first touch control electrodes are electrically connected along a first direction, the first touch control electrodes comprise first trunk electrodes extending along the first direction, the second touch control electrodes are electrically connected along a second direction, the second touch control electrodes comprise second trunk electrodes extending along the second direction, and the first direction and the second direction are crossed. The projection of the second display area on the substrate base plate is arranged between the projections of two adjacent first trunk electrodes arranged along the second direction on the substrate base plate, and/or the projection of the second display area on the substrate base plate is arranged between the projections of two adjacent second trunk electrodes arranged along the first direction, so that the influence of the removal of the touch electrodes around the second display area and the second display area on the touch effect is avoided, and the projection of the second display area on the substrate base plate and the projection of at least one of the first touch electrode, the second touch electrode and the dummy electrode on the substrate base plate are not overlapped, so that the light transmittance of the light-transmitting area is improved, the imaging quality of the camera is improved, and the performance of the display panel is improved.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 to fig. 4 are schematic partial structural diagrams of a display panel according to an embodiment of the invention;
fig. 5 is a schematic partial structure diagram of another display panel according to an embodiment of the present invention;
fig. 6 to 8 are schematic partial structural diagrams of another display panel according to an embodiment of the invention;
FIG. 9 is a cross-sectional view taken along line A1A2 of FIG. 5;
FIG. 10 is a cross-sectional view taken along line B2B2 of FIG. 5;
fig. 11 is a schematic partial structure diagram of another display panel according to an embodiment of the present invention;
fig. 12 is a schematic cross-sectional view illustrating a first display area according to an embodiment of the invention;
fig. 13 is a schematic cross-sectional view illustrating a second display area according to an embodiment of the invention;
fig. 14 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 15 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
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. 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 will also 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 intervening elements. The terms "first," "second," and the like, are used for descriptive purposes only and are not intended to denote any order, quantity, or importance, but rather are used to distinguish one element from another. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
A camera under screen (cpu or under display camera, UDC) is a new technology, which hides a camera under a screen, so that a camera area can be normally displayed when a photographing and shooting function is not performed, the screen occupation ratio is improved, and real full-screen display is realized. Because the requirement of a camera on light is high when imaging is carried out, a touch control functional layer is generally arranged above a light-emitting element, in order to improve the light transmittance of a camera area under a screen, a touch control electrode in the camera area can be directly removed when a display panel is designed in the existing product, a connecting line is only designed in the area or a winding wire which bypasses the area is designed, and the direct removal of the touch control electrode can cause insensitive touch control or even loss of the touch control function of the camera area under the screen and the peripheral area, so that the performance of the display panel is influenced.
In order to solve the above problem, an embodiment of the present invention provides a display panel including a first display region and a second display region, the second display region including a plurality of non-light-transmitting regions and light-transmitting regions, the display panel including: a substrate base plate; a plurality of light emitting elements located on one side of the substrate base; the touch control functional layer is positioned on one side of the light-emitting element, which is far away from the substrate, and comprises a plurality of touch control electrodes arranged in an array and a plurality of dummy electrodes; the touch control electrodes comprise first touch control electrodes and second touch control electrodes, the first touch control electrodes are electrically connected along a first direction, the first touch control electrodes comprise first trunk electrodes extending along the first direction, the second touch control electrodes are electrically connected along a second direction, the second touch control electrodes comprise second trunk electrodes extending along the second direction, and the first direction and the second direction are crossed; the projection of the second display area on the substrate base plate is positioned between the projections of the two adjacent first main electrodes arranged along the second direction on the substrate base plate, and/or the projection of the second display area on the substrate base plate is positioned between the projections of the two adjacent second main electrodes arranged along the first direction, and the projection of the second display area on the substrate base plate is not overlapped with the projection of at least one of the first touch electrode, the second touch electrode and the dummy electrode on the substrate base plate.
The second display area is a light sensing element setting area of the display panel, and the light sensing element can be a camera. In a specific implementation, in order to increase the light transmittance of the second display region, the pixel density of the first display region may be set to be greater than that of the second display region, and/or the light emitting area of the light emitting element of the first display region is greater than that of the light emitting element of the second display region, which is not limited in the embodiment of the present invention. The non-light-transmitting area of the second display area is used for arranging the light-emitting element and the corresponding pixel circuit, and the light-transmitting area is used for transmitting outside light. In another embodiment, only the light emitting device can be disposed in the non-transmissive region, and the corresponding pixel circuit can be disposed in the first display region to increase the area of the transmissive region. The substrate may be a flexible substrate or a rigid substrate, which is not limited in the embodiment of the present invention. The display panel provided by the embodiment of the invention further comprises a touch functional layer for realizing a touch function. In this embodiment, a mutual capacitance manner is adopted to realize a touch function, the touch function layer includes a plurality of touch electrodes arranged in an array, the touch electrodes include a first touch electrode and a second touch electrode, one of the touch electrodes is a touch driving electrode, and the other touch electrode is a driving sensing electrode, and positioning is realized by detecting capacitance change of a touch position. Since the touch functional layer covers the display area, the first touch electrode and the second touch electrode do not cover all the display area, and in order to improve the display uniformity of the display area, the touch functional layer further includes a plurality of dummy electrodes, and the dummy electrodes are connected to a fixed potential (e.g., ground potential) or suspended in the air.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention. Referring to fig. 1, the display panel according to the embodiment of the invention includes a first display area 100 and a second display area 200, wherein the first display area 100 is a conventional display area, and the second display area 200 is a region where the light sensing elements are disposed. The second display area 200 includes a non-transparent area 201 and a plurality of transparent areas 202, the non-transparent area 201 and the first display area 100 are both provided with light emitting devices (not shown in fig. 1) to realize image display, and the transparent area 201 can transmit external light to be received by the light sensing devices below the display panel.
In this embodiment, the light sensing element may be a camera, and optionally, the projection of the second display area 200 on the substrate is a circle. In other embodiments, the second display area 200 is not limited to include one, and the position of the specific second display area is not limited, and may be located in the upper left corner, the upper right corner, or the center of the upper side of the display panel.
Fig. 2 to fig. 4 are schematic partial structural diagrams of a display panel according to an embodiment of the invention. Wherein fig. 2-4 show top views of the second display area 200 and a portion of the first display area 100. Referring to fig. 2 to 4, the touch functional layer includes a plurality of touch electrodes 300 arranged in an array and a plurality of dummy electrodes 400, where the touch electrodes 300 are used for implementing a touch function, and the shape, position, and the like of the dummy electrodes 400 are configured according to the structure of the specific touch electrodes 300, which is not limited in the embodiment of the present invention. The touch electrode 300 includes a first touch electrode 310 and a second touch electrode 320, the first touch electrodes 310 are electrically connected along a first direction x, the first touch electrode 310 includes a first trunk electrode 311 extending along the first direction x, the second touch electrodes 320 are electrically connected along a second direction y, the second touch electrode 320 includes a second trunk electrode 321 extending along the second direction y, and the first direction x and the second direction y intersect. Referring to fig. 2, the projection of the second display region 200 on the substrate base plate is located between the projections of the adjacent two first trunk electrodes 311 arranged along the second direction y on the substrate base plate; referring to fig. 3, the projection of the second display region 200 on the substrate base plate is located between the projections of two adjacent second trunk electrodes 321 arranged along the first direction x; referring to fig. 4, the projection of the second display region 200 on the substrate is located between two adjacent first trunk electrodes 311, and is located between the projections of two adjacent second trunk electrodes 321, that is, located in the quadrilateral outline enclosed by the two first trunk electrodes 311 and the second trunk electrodes 321. By optimally designing the position relationship between the touch electrode 300 and the second display area 200, the touch performance of the area near the second display area 200 can be improved. In practical implementation, in order to improve the light transmittance of the second display area 200, in the embodiment, the projection of the second display area 200 on the substrate is set to be non-overlapped with the projection of at least one of the first touch electrode 310, the second touch electrode 320 and the dummy electrode 400 on the substrate. For example, the second display area 200 shown in fig. 2 does not overlap with the first trunk electrode 311 and the dummy electrode 400, and the second display area 200 shown in fig. 3 does not overlap with the second trunk electrode 321 and the dummy electrode 400, which may be designed according to practical situations in specific implementation, and the embodiment of the present invention does not limit this. Optionally, referring to fig. 4, the projection of the second display area 200 on the substrate is not overlapped with the projections of the first touch electrode 310, the second touch electrode 320 and the dummy electrode 400 on the substrate, which is beneficial to improving the light transmittance of the second display area 200 and improving the imaging effect of the camera.
According to the technical scheme, the projection of the second display area on the substrate base plate is arranged between the projections of the adjacent two first main electrodes arranged along the second direction on the substrate base plate, and/or the projection of the second display area on the substrate base plate is arranged between the projections of the adjacent two second main electrodes arranged along the first direction, so that the touch effect is prevented from being influenced by removing the touch electrodes around the second display area and the second display area, and the projection of the second display area on the substrate base plate is not overlapped with the projection of at least one of the first touch electrode, the second touch electrode and the dummy electrode on the substrate base plate, so that the light transmittance of the light transmission area is improved, the imaging quality of the camera is improved, and the performance of the display panel is improved.
In order to improve the touch accuracy of the touch panel, when the shape of the touch electrode is designed, the touch electrode may be designed to include a branch electrode in addition to the main electrode. Exemplarily, fig. 5 is a schematic partial structure diagram of another display panel provided in an embodiment of the present invention. Referring to fig. 5, optionally, the first touch electrode 310 includes at least one first branch electrode 312, at least one end of the first branch electrode 312 is connected to the first main electrode 311, and the extending direction of the first branch electrode 312 intersects the first direction x; and/or the second touch electrode 320 includes at least one second branch electrode 322, at least one end of the second branch electrode 312 is connected to the second main electrode 321, and the extending direction of the second branch electrode 322 intersects with the second direction y.
It can be understood that, fig. 5 exemplarily shows that the first touch electrode 310 and the second touch electrode 320 both include corresponding branch electrodes, in other embodiments, only the first touch electrode 310 or the second touch electrode 320 may be disposed to include the branch electrodes, for example, two adjacent touch electrodes including only the main electrode may be disposed to be close to each other to ensure the touch accuracy and sensitivity, where the shapes of the branch electrodes are merely illustrative, and the specific implementation may be designed according to actual situations.
With continued reference to fig. 5, optionally, the first branch electrode 312 includes a first sub-branch electrode 3121 extending along the third direction a and a second sub-branch electrode 3122 extending along the fourth direction b, the first sub-branch electrode 3121 is electrically connected with the first trunk electrode 311 and/or electrically connected with the second sub-branch electrode 3122, and the second sub-branch electrode 3122 is electrically connected with the first trunk electrode 311 and/or electrically connected with the first sub-branch electrode 3121; the first direction x and the second direction y are crossed with the third direction a, and the first direction x and the second direction y are crossed with the fourth direction b; alternatively, the second branch electrode 322 includes a third sub-branch electrode 3221 extending along the third direction a and a fourth sub-branch electrode 3222 extending along the fourth direction b, the third sub-branch electrode 3221 is electrically connected to the second main electrode 321 and/or electrically connected to the fourth sub-branch electrode 3222, and the fourth sub-branch electrode 3222 is electrically connected to the second main electrode 321 and/or electrically connected to the third sub-branch electrode 3221, where fig. 5 only schematically illustrates that the third sub-branch electrode 3221 is connected to the second main electrode 321, and the fourth sub-branch electrode 3222 is connected to the second main electrode 321, in other embodiments, the second branch electrode 322 may also be shaped similar to the first branch electrode 312, and the specific implementation may be designed according to actual situations.
Alternatively, with continued reference to fig. 5, along the fourth direction b, at least one set of the first sub-branch electrodes 3121, the third sub-branch electrodes 3221 and the first sub-branch electrodes 3121 are alternately arranged, such as three sub-branch electrodes overlapped with the dashed arrow in fig. 5; or at least one set of the third sub branch electrodes 3221, the first sub branch electrodes 3121 and the third sub branch electrodes 3221 are alternately arranged (not shown in fig. 5); and/or at least one set of the second sub-branch electrodes 3122, the fourth sub-branch electrodes 3222 and the second sub-branch electrodes 3122 are alternately arranged along the third direction a, such as three branch electrodes overlapped with the solid arrows in fig. 5; or at least one set of the fourth sub-branch electrodes 3222, the second sub-branch electrodes 3122 and the fourth sub-branch electrodes 3222 are alternately arranged (not shown in fig. 5).
The dummy electrode 400 is disposed in a gap of the touch electrode 300, the patterns of the first touch electrode 310, the second touch electrode 320 and the dummy electrode 400 are mutually insulated and nested, fig. 5 schematically shows the shape of each electrode, the first touch electrode 310, the second touch electrode 320 and the dummy electrode 400 are arranged in a mutually insulated manner, and the shape of the first touch electrode 310 and the shape of the second touch electrode 320 are reasonably arranged, so that the capacitance between the first touch electrode 310 and the second touch electrode 320 is favorably formed, and the touch performance is improved. In other embodiments, the shape and number of the specific branch electrodes may be designed according to practical situations, which is not limited in the embodiments of the present invention.
Optionally, along a direction perpendicular to the substrate base plate, the center of the second display area coincides with the center of a connecting line between the centers of two adjacent first trunk electrodes arranged along the second direction; and/or the center of the second display area is superposed with the center of a central connecting line of two adjacent second main electrode arranged along the first direction.
For example, fig. 6 to fig. 8 are schematic partial structural diagrams of another display panel according to an embodiment of the present invention. Referring to fig. 6, the center of the second display region 200 coincides with the center C of a line AB connecting the center a of the first stem electrode 311 and the center B of the first stem electrode 311; referring to fig. 7, the center of the second display region 200 coincides with the center F of a line DE connecting the center D of the second stem electrode 321 and the center E of the second stem electrode 321; referring to fig. 8, the center of the second display area 200 coincides with both the center C of AB and the center F of DE. The term "overlap" described in this embodiment refers to overlap within a process error tolerance range, and the touch performance can be improved on the basis of ensuring the light transmittance of the second display area 200 by reasonably designing the position relationship between the second display area 200 and the touch electrode. Further, with reference to fig. 8, in an implementation, the edge of the second display area 200 may be tangent to the edge of the adjacent trunk electrode, so as to facilitate positioning the position of the second display area 200, and reduce the overlapping area with the trunk electrode as much as possible when there is a process error causing a position misalignment.
Fig. 9 is a schematic cross-sectional view taken along a sectional line A1A2 in fig. 5, and fig. 10 is a schematic cross-sectional view taken along a sectional line B1B2 in fig. 5. Where fig. 9 and 10 show the structure of the touch functional layer, referring to fig. 9, optionally, the touch functional layer includes a first conductive layer 501; the first conductive layer 501 includes a first trunk electrode 311, a second trunk electrode 321, and a dummy electrode 400. Referring to fig. 10, optionally, the touch functional layer further includes a second conductive layer 502 and a first insulating layer 503, wherein the first insulating layer 503 is located between the first conductive layer 501 and the second conductive layer 502; the second conductive layer 502 includes a connection line between two adjacent first touch electrodes (two adjacent first main electrodes 311).
It is understood that, in this embodiment, most structures of the touch functional layer are located on the first conductive layer 501, wherein to avoid the connection between the first touch electrode and the second touch electrode, the first main electrode 311 is designed to be a plurality of separate structures, and then is electrically connected through a bridge structure located on the second conductive layer 502, in another embodiment, the second main electrode 321 may also be designed to be a separate structure, and a bridge structure of two second main electrodes 321 is designed on the second conductive layer 502.
In specific implementation, optionally, the first conductive layer further includes at least one first branch electrode 312 (for example, the structure shown in fig. 5), at least one end of the first branch electrode 312 is connected to the first trunk electrode 311, and an extending direction of the first branch electrode 312 intersects with the first direction; and/or the second touch electrode comprises at least one second branch electrode 322, at least one end of the second branch electrode 322 is connected with the second main electrode 322, and the extending direction of the second branch electrode 322 is crossed with the second direction. The shapes of the first branch electrode 312 and the second branch electrode 322 may be designed according to practical situations, and the embodiment of the present invention is not limited.
In one embodiment, the touch electrode may be formed by Metal traces of a mesh structure, that is, a Metal mesh structure, and optionally, the first conductive layer includes a plurality of Metal traces of a mesh structure, and the Metal traces are not overlapped with the second display region along a direction perpendicular to the substrate. Because the metal is walked the line and is generally set up the non-opening district on pixel definition layer, this position just in time corresponds the position of display panel design printing opacity district, through setting up metal and walk the line and do not have the overlap with the second display area, be favorable to increasing printing opacity district area, improve the light transmissivity in second display area, improve the formation of image effect of camera.
In another embodiment, optionally, the first conductive layer includes a transparent conductive layer, and the transparent conductive layer does not overlap with the second display region in a direction perpendicular to the substrate base plate.
The touch control functional layer can be formed by utilizing a transparent conductive layer (such as Indium Tin Oxide (ITO)), and the transparent conductive layer also has certain influence on the transmittance of light, so that the requirement of the second display area on the transmittance of light is higher, and the transparent conductive layer is arranged to be not overlapped with the second display area, so that the transmittance of light in the second display area can be improved, and the imaging effect of the camera is improved.
With continuing reference to fig. 5 and fig. 10, optionally, along the first direction x, the first touch electrode 310 includes a plurality of separated first main electrodes 311, two adjacent first main electrodes 311 along the first direction x are electrically connected through a connection line located on the second conductive layer 502, the plurality of electrically connected first main electrodes 311 form a first main electrode group 313, and the plurality of first main electrode groups 313 are arranged along the second direction y; along the second direction y, the second touch electrode 320 includes integrally arranged second trunk electrodes 311, and a plurality of second trunk electrodes 321 are arranged along the first direction x; the plurality of first main electrode groups 300 and the plurality of second main electrodes 321 cross to form a mesh structure, and the projection of the second display area 200 on the substrate is located in the projection of one mesh of the mesh structure on the substrate.
Through setting up second display area 200 and being located network structure's mesh structure, can guarantee that second display area 200 is provided with touch-control electrode all around to guarantee that the regional touch-control function around second display area 200 is normal, through getting rid of touch-control electrode and the dummy electrode with second display area 200 overlap region, thereby under the circumstances of guaranteeing that the touch-control function is stable around second display area 200, promote the light transmissivity of second display area 200, improve the formation of image effect of camera.
Fig. 11 is a schematic partial structure diagram of another display panel according to an embodiment of the present invention. Referring to fig. 11, optionally, the first touch electrodes 310a located in the first display area and not adjacent to the second display area 200 are in a symmetrical pattern, that is, the first touch electrodes 310a are symmetrical with respect to the axis of the corresponding first main electrode 311 a; the second touch electrodes 320a located in the first display area and not adjacent to the second display area 200 are symmetric patterns, that is, the second touch electrodes 320a are symmetric with respect to the axis of the corresponding second main electrode 321 a; the first touch electrodes 310b adjacent to the second display area 200 are in an asymmetric pattern, that is, the first touch electrodes 310b are asymmetric with respect to the corresponding first main electrodes 311b, and the second touch electrodes 320b adjacent to the second display area 200 are in an asymmetric pattern, that is, the second touch electrodes 320b are asymmetric with respect to the corresponding second main electrodes 321 b.
It can be understood that, in the technical solution of the present embodiment, the touch electrode and the dummy electrode corresponding to the position of the second display area 200 are removed, so that the touch electrode adjacent to the second display area 200 is an asymmetric pattern, and in the specific implementation, a portion of the branch electrode corresponding to the second display area 200 may be removed, that is, a portion of the touch electrode including a portion with missing branches is designed. With reference to fig. 11, optionally, the first touch electrode 310b adjacent to the second display area 200 includes a third sub-electrode 312a and a fourth sub-electrode 312b, the third sub-electrode 312a is located on a side of the first main electrode 311b close to the second display area 200, the fourth sub-electrode 312b is located on a side of the first main electrode 311b away from the second display area 200, and the third sub-electrode 312a and the fourth sub-electrode 312b are asymmetric structures with respect to the first main electrode 311 b; the second touch electrode 320b adjacent to the second display area 200 includes a fifth sub-electrode 322a and a sixth sub-electrode 322b, the fifth sub-electrode 322a is located on a side of the second main electrode 321b close to the second display area 200, the sixth sub-electrode 322b is located on a side of the second main electrode 321b far from the second display area 200, and the fifth sub-electrode 322a and the sixth sub-electrode 322b are asymmetric structures with respect to the second main electrode 321 b.
Through the above arrangement, the touch performance of the area around the second display area 200 can be ensured.
With continued reference to fig. 11, optionally, the areas of two first touch electrodes adjacent to the second display area 200 (the first touch electrode above and the first touch electrode below the second display area 200) are equal, and/or the areas of two second touch electrodes adjacent to the second display area 200 (the second touch electrode on the left side and the second touch electrode on the right side of the second display area 200) are equal.
The areas of the two first touch electrodes and the two second touch electrodes are equal, so that the areas of the branch electrodes missing from the first touch electrodes and the second touch electrodes are basically consistent, the influence of uneven capacitance caused by the difference of the touch areas is reduced, and the touch performance of the display panel is improved.
Optionally, the display panel further includes a first electrode layer, a light emitting layer, and a second electrode layer sequentially stacked along a direction away from the substrate; the first electrode layer includes a plurality of first electrodes corresponding to the light emitting elements, and in the second display region, the second electrode layer includes a patterned second electrode including a plurality of openings corresponding to the light transmitting regions.
Fig. 12 is a schematic cross-sectional structure diagram of a first display area according to an embodiment of the disclosure. Referring to fig. 12, the display panel includes a substrate base 10; among other things, the substrate base plate 10 may be flexible and thus stretchable, foldable, bendable, or rollable, so that the display panel may be stretchable, foldable, bendable, or rollable. The base substrate 10 may be formed of any suitable insulating material having flexibility. The base substrate 10 may serve to block oxygen and moisture, prevent moisture or impurities from diffusing through the base substrate 10, and form a flat surface on the upper surface of the base substrate 10. For example, the base substrate 10 may be formed of a polymer material such as Polyimide (PI), polycarbonate (PC), polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyarylate (PAR), or glass Fiber Reinforced Plastic (FRP), and may be transparent, translucent, or opaque. Optionally, the display panel may further include a buffer layer (not shown in fig. 12) on the base substrate 10, and the buffer layer may cover the entire upper surface of the base substrate 10. The base substrate 10 may be rigid, and may be a glass substrate, for example, to form a rigid display panel.
A pixel circuit layer 20 on one side of the substrate base plate 10; the specific pixel circuit layer 20 is located on the side of the substrate base plate 10 facing the display surface or touch surface of the display panel. The pixel circuit layer 20 may include a plurality of Thin Film transistors 21 (TFTs) and a pixel circuit composed of the TFTs 21 for driving the light emitting element in the display layer. In this embodiment, a structure of a top gate thin film transistor will be described as an example. Thin-film-transistor layer 21 includes: an active layer 211 on the base substrate 10; the active layer 211 may be an amorphous silicon material, a polysilicon material, a metal oxide material, or the like. When the active layer 211 is made of a polysilicon material, a low-temperature amorphous silicon technology may be used, that is, the amorphous silicon material is melted by laser to form the polysilicon material. In one embodiment, the pixel circuit layer 21 may optionally include a plurality of thin film transistors 21, and the thin film transistors 21 may include low temperature polysilicon-based thin film transistors and metal oxide semiconductor-based thin film transistors. The oxide semiconductor can comprise Indium Gallium Zinc Oxide (IGZO), the IGZO has the characteristics of high transmittance, low electron mobility, large on-off ratio, low power consumption and the like compared with LTPS, and a pixel circuit formed by utilizing the two transistors has better performance. In addition, various methods such as a Rapid Thermal Annealing (RTA) method, a Solid Phase Crystallization (SPC) method, an Excimer Laser Annealing (ELA) method, a Metal Induced Crystallization (MIC) method, a Metal Induced Lateral Crystallization (MILC) method, or a Sequential Lateral Solidification (SLS) method may also be used. The active layer 211 further includes source and drain regions formed by doping N-type impurity ions or P-type impurity ions, and a channel region is formed between the source and drain regions. The pixel circuit layer 20 further includes a gate insulating layer 212 on the active layer 211; the gate insulating layer 212 includes an inorganic layer such as silicon oxide, silicon nitride, and may include a single layer or a plurality of layers. Thin-film transistor layer 21 also includes a gate 213 located on gate insulating layer 212; the gate electrode 213 may include a single layer or a plurality of layers of gold (Au), silver (Ag), copper (Cu), nickel (Ni), platinum (Pt), palladium (Pd), aluminum (Al), molybdenum (MO), or chromium (Cr), or a material such as aluminum (Al): neodymium (Nd) alloy or Molybdenum (MO): the tungsten (W) alloy may be selected according to actual conditions. The pixel circuit layer 20 further includes an interlayer insulating layer 214 on the gate electrode 213; the interlayer insulating layer 214 may include an inorganic material or an organic material. The inorganic material may include at least one selected from silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, and silicon oxynitride. The organic material may include at least one selected from acrylic resins, methacrylic resins, polyisoprene, vinyl resins, epoxy resins, urethane resins, cellulose resins, and perylene resins. Thin-film-transistor layer 21 also includes a source electrode 2151 and a drain electrode 2152 on interlayer insulating layer 214. The source and drain electrodes 2151 and 2152 are electrically connected to the source and drain regions, respectively, through contact holes, which may be formed by selectively removing the gate insulating layer 212 and the interlayer insulating layer 214.
The pixel circuit layer 20 may also include a passivation layer 22. Alternatively, the passivation layer 22 is positioned on the source electrode 2151 and the drain electrode 2152 of the thin film transistor 21. The passivation layer 22 may be formed of an inorganic material such as silicon oxide or silicon nitride, or may be formed of an organic material. The display panel may further include a planarization layer 23. Optionally, a planarization layer 23 is located on the passivation layer 22. The planarization layer 23 may include an organic material such as acryl, polyimide (PI), benzocyclobutene (BCB), or the like, and the planarization layer 23 has a planarization effect.
And a display layer 30 positioned on a side of the pixel circuit layer 20 facing away from the substrate 10, the display layer 30 including a plurality of light emitting elements 31.Optionally, the display layer 30 is located on the planarization layer 23. The display layer 30 includes a first electrode layer 301, a light-emitting layer 302, and a second electrode layer 303 which are provided in this order in a direction away from the base substrate 10. The first electrode layer 301 may be formed of various conductive materials. For example, the first electrode layer 301 may be an anode layer, and may be formed as a transparent electrode or a reflective electrode according to its use. When the anode is formed as a transparent electrode, indium Tin Oxide (ITO), indium Zinc Oxide (IZO), zinc oxide (ZnO), or indium oxide (In) may be included 2 O 3 ) Etc., when the anode is formed as a reflective electrode, the reflective layer may be formed of silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), or a mixture thereof, and ITO, IZO, znO, or In 2 O 3 Etc. may be formed on the reflective layer. The light emitting layer 302 may include a low molecular material or a high molecular material. When the light emitting layer 302 includes a low molecular material, the light emitting layer 302 may include an emission layer (EML), and may further include at least one of a Hole Injection Layer (HIL), a Hole Transport Layer (HTL), an Electron Transport Layer (ETL), and an Electron Injection Layer (EIL). The light emitting layer 302 may include various organic materials, for example, copper phthalocyanine (CuPc), N '-di (naphthalene-1-yl) -N, N' -diphenyl-benzidine (NPB), tris-8-hydroxyquinoline-aluminum (Alq 3), or the like. The light emitting layer 302 may be formed by vapor deposition.
When the light emitting layer 302 includes a high molecular material, the light emitting layer 302 may include an HTL and an EML. The HTL may include PEDOT, and the EML may include polyphenylene vinylene (PPV) based and polyfluorene based polymer materials. The light emitting layer 302 may be formed by screen printing, inkjet printing, laser Induced Thermal Imaging (LITI), or the like.
However, the light emitting layer 302 is not limited to the above example. The light emitting layer 302 may include a single layer across the plurality of first electrode layers 301 or a plurality of layers patterned with respect to each of the first electrode layers 301. The display layer 30 further includes a pixel defining layer 32 on a side of the first electrode layer 301 remote from the pixel circuit layer 20. The pixel defining layer 32 may be formed of an organic material such as Polyimide (PI), polyamide, benzocyclobutene (BCB), acryl resin, or phenol resin, or an inorganic material such as SiNx. When the second electricityWhen the electrode layer 303 (cathode layer) is formed as a transparent electrode, a compound having a small work function such as lithium (Li), calcium (Ca), lithium fluoride/calcium (LiF/Ca), lithium fluoride/aluminum (LiF/Al), aluminum (Al), magnesium (Mg), or a combination thereof may be initially deposited on the light emitting layer by evaporation, and a compound such as ITO, IZO, znO, or In 2 O 3 Etc. a transparent electrode-forming material may be deposited on the compound. When the cathode is formed as a reflective electrode, the cathode may be formed by evaporating Li, ca, liF/Al, mg or a mixture thereof on the entire surface of the substrate.
Optionally, the first electrode layer 301 includes a plurality of anode patterns corresponding to the pixels one by one, and the anode patterns in the first electrode layer 301 are connected to the source electrode 2151 or the drain electrode 2152 of the thin film transistor 21 through the via holes on the planarization layer 23. The pixel defining layer 32 includes a plurality of openings exposing the first electrode layer 301, and the pixel defining layer 32 may cover edges of the first electrode layer 301 pattern. The light emitting layer 302 at least partially fills the opening of the pixel defining layer 32 and is in contact with the first electrode layer 301.
Alternatively, the first electrode layer 301, the light emitting layer 302, and the second electrode layer 303 defined by the opening of each pixel defining layer 32 constitute a light emitting element 31 (shown in a dashed line frame in fig. 12), each light emitting element 31 can emit light of different colors according to different light emitting layers 302, each light emitting element 31 constitutes a sub-pixel, and a plurality of sub-pixels collectively perform display of a screen.
Optionally, the display panel further includes an encapsulation layer 40 on the display layer 30 and completely covers the display layer 30 to seal the display layer 30. In order to planarize the display layer 30, a planarization layer 33 is further disposed above the display layer 30. Optionally, the encapsulation layer 40 may be a thin film encapsulation layer, and is located on the planarization layer 33, and includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer (a specific film layer of the encapsulation layer 40 is not shown in fig. 12) sequentially arranged in a direction away from the substrate 10, so as to prevent water and oxygen from corroding the light-emitting element 31. Of course, in other alternative embodiments of the present invention, the encapsulation layer 40 may include any number of stacked organic and inorganic materials, but at least one layer of organic material and at least one layer of inorganic material are alternately deposited, and the lowermost layer and the uppermost layer are made of inorganic materials.
The display panel further includes a touch functional layer 50 on the encapsulation layer 40, the touch functional layer 50 includes a plurality of touch electrodes for implementing a touch function, and the specific structure of the touch functional layer 50 is described in the above embodiments and will not be described in detail herein.
The display panel further comprises a protective layer 60 on the touch functional layer 50. Optionally, the protective layer 60 is a film layer on the outermost side of the display panel, and may be a protective cover or a protective film. The protective layer 60 may be adhered to a film layer inside an adjacent display panel by an Optically Clear Adhesive OCA (optical Clear Adhesive), and a surface of the protective layer 60 is an operation surface touched by the display panel. In other embodiments, a color resistance layer may be further disposed below the protective layer 60, and the specific implementation may be designed according to actual situations.
Referring to fig. 12, for the first display region, it does not include the structure of the light-transmitting region, and thus the second electrode layer 303 is generally a whole semi-transparent film layer. In order to improve the light transmittance of the light-transmitting region of the second display region, optionally, in the second display region, the second electrode layer includes a patterned second electrode, and the second electrode layer includes a plurality of openings corresponding to the light-transmitting region.
Exemplarily, fig. 13 is a schematic cross-sectional structure diagram of a second display area according to an embodiment of the present invention. Referring to fig. 13, by designing an opening 304 corresponding to the light-transmitting region in the second electrode layer 303, the light transmittance of the light-transmitting region can be further improved.
Fig. 14 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Referring to fig. 14, optionally, the display panel further includes a third display area 500, the third display area 500 is disposed around the second display area 200, and the third display area 500 is located between the first display area 100 and the second display area 200; in the third display region 500, the second electrode layer is integrally provided.
It is understood that, since the pixel density and/or the area of the light emitting elements in the first display area 100 and the second display area 200 are generally set to be different, in order to improve the display effect of the display panel, a third display area 500 for transition may be set between the first display area 100 and the second display area 200, wherein the pixel density and/or the area of the light emitting elements of the third display area 500 is located between the first display area 100 and the second display area 200, and a gradual change may also be formed to improve the display effect.
In this embodiment, the third display area 500 is a transition area, which has no light transmittance, and thus the third display area 500 may be provided with or without touch electrodes. In one embodiment, optionally, a projection of the third display area on the substrate base does not overlap with a projection of at least one of the first touch electrode, the second touch electrode, and the dummy electrode on the substrate base. In specific implementation, the projection of the third display area on the substrate base plate and the first touch electrode, the second touch electrode and the dummy electrode are not overlapped, that is, the third display area 500 has no touch function, so that the area for removing the electrodes is larger, and the reduction of the process difficulty is facilitated.
In another embodiment, the third display area may also be configured to have a touch function, so as to reduce the area of the touch blind area. Optionally, a projection of the third display area on the substrate base plate at least partially overlaps a projection of at least one of the first touch electrode, the second touch electrode, and the dummy electrode on the substrate base plate.
Since the dummy electrode has a larger design freedom in shape and size and a smaller area of the third display area, in another embodiment, optionally, the projection of the third display area on the substrate does not overlap with the projections of the first touch electrode and the second touch electrode on the substrate, and at least partially overlaps with the projection of the dummy electrode on the substrate.
Fig. 15 is a schematic structural diagram of a display device according to an embodiment of the present invention. Referring to fig. 15, the display device 1 includes any one of the display panels 2 provided in the embodiments of the present invention. The display device 1 may be a mobile phone, a computer, an intelligent wearable device, and the like.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (22)

1. A display panel comprising a first display region and a second display region, the second display region comprising a plurality of non-light-transmitting regions and light-transmitting regions, the display panel comprising:
a substrate base plate;
a plurality of light emitting elements located on one side of the substrate base plate;
the touch control functional layer is positioned on one side of the light-emitting element, which is far away from the substrate, and comprises a plurality of touch control electrodes arranged in an array and a plurality of dummy electrodes;
the touch electrodes comprise first touch electrodes and second touch electrodes, the first touch electrodes are electrically connected along a first direction, the first touch electrodes comprise first trunk electrodes extending along the first direction, the second touch electrodes are electrically connected along a second direction, the second touch electrodes comprise second trunk electrodes extending along the second direction, and the first direction and the second direction are crossed;
the projection of the second display area on the substrate base plate is located between the projections of the first trunk electrodes arranged along the second direction and the substrate base plate, and/or the projection of the second display area on the substrate base plate is located between the projections of the second trunk electrodes arranged along the first direction and the substrate base plate, and the projection of the second display area on the substrate base plate is not overlapped with the projection of at least one of the first touch electrode, the second touch electrode and the dummy electrode on the substrate base plate.
2. The display panel according to claim 1, wherein a projection of the second display area on the substrate base does not overlap with projections of the first touch electrode, the second touch electrode and the dummy electrode on the substrate base.
3. The display panel according to claim 1, wherein the first touch electrode comprises at least one first branch electrode, at least one end of the first branch electrode is connected to the first main electrode, and an extending direction of the first branch electrode crosses the first direction; and/or
The second touch electrode comprises at least one second branch electrode, at least one end of the second branch electrode is connected with the second main electrode, and the extending direction of the second branch electrode is crossed with the second direction.
4. The display panel according to claim 3, wherein the first branch electrode comprises a first sub-branch electrode extending along a third direction and a second sub-branch electrode extending along a fourth direction, the first sub-branch electrode is electrically connected with the first main electrode and/or the second sub-branch electrode, and the second sub-branch electrode is electrically connected with the first main electrode and/or the first sub-branch electrode; the first direction and the second direction both intersect the third direction, and the first direction and the second direction both intersect the fourth direction;
alternatively, the first and second electrodes may be,
the second branch electrode comprises a third sub branch electrode extending along the third direction and a fourth sub branch electrode extending along the fourth direction, the third sub branch electrode is electrically connected with the second main electrode and/or the fourth sub branch electrode, and the fourth sub branch electrode is electrically connected with the second main electrode and/or the third sub branch electrode.
5. The display panel according to claim 4, wherein at least one set of the first sub-branch electrodes, the third sub-branch electrodes and the first sub-branch electrodes are alternately arranged, or at least one set of the third sub-branch electrodes, the first sub-branch electrodes and the third sub-branch electrodes are alternately arranged along the fourth direction; and/or
Along the third direction, at least one group of the second sub-branch electrodes, the fourth sub-branch electrodes and the second sub-branch electrodes are alternately arranged, or at least one group of the fourth sub-branch electrodes, the second sub-branch electrodes and the fourth sub-branch electrodes are alternately arranged.
6. The display panel according to claim 1, wherein a center of the second display region coincides with a center of a central connecting line of two adjacent first trunk electrodes arranged in the second direction in a direction perpendicular to the substrate base plate; and/or
The center of the second display area is superposed with the center of a central connecting line of two adjacent second main electrodes arranged along the first direction.
7. The display panel according to claim 1, wherein the touch functional layer comprises a first conductive layer;
the first conductive layer includes the first trunk electrode, the second trunk electrode, and the dummy electrode.
8. The display panel according to claim 7, wherein the first conductive layer further comprises at least one first branch electrode, at least one end of the first branch electrode is connected to the first trunk electrode, and an extending direction of the first branch electrode crosses the first direction; and/or
The second touch electrode comprises at least one second branch electrode, at least one end of the second branch electrode is connected with the second main electrode, and the extending direction of the second branch electrode is crossed with the second direction.
9. The display panel according to claim 7, wherein the first conductive layer comprises a plurality of metal traces with a mesh structure, and the metal traces are not overlapped with the second display region along a direction perpendicular to the substrate.
10. The display panel according to claim 7, wherein the first conductive layer comprises a transparent conductive layer, and the transparent conductive layer does not overlap with the second display region in a direction perpendicular to the substrate base plate.
11. The display panel according to claim 7, wherein the touch functional layer further comprises a second conductive layer and a first insulating layer, the first insulating layer being located between the first conductive layer and the second conductive layer;
the second conductive layer comprises a connecting line between two adjacent first touch control electrodes or a connecting line between two adjacent second touch control electrodes.
12. The display panel according to claim 11, wherein along the first direction, the first touch electrode comprises a plurality of separated first trunk electrodes, two adjacent first trunk electrodes along the first direction are electrically connected by a connection line located in the second conductive layer, the plurality of electrically connected first trunk electrodes form a first trunk electrode group, and the plurality of first trunk electrode groups are arranged along the second direction;
along the second direction, the second touch electrode comprises the second trunk electrodes which are integrally arranged, and the second trunk electrodes are arranged along the first direction;
the first main electrode groups and the second main electrodes are crossed to form a mesh structure, and the projection of the second display area on the substrate base plate is positioned in the projection of one mesh of the mesh structure on the substrate base plate.
13. The display panel according to claim 1, wherein a projection of the second display region on the substrate base plate is circular.
14. The display panel according to claim 1, wherein the first touch electrodes located in the first display area and not adjacent to the second display area are in a symmetrical pattern, and the second touch electrodes located in the first display area and not adjacent to the second display area are in a symmetrical pattern;
the first touch electrode adjacent to the second display area is in an asymmetric pattern, and the second touch electrode adjacent to the second display area is in an asymmetric pattern.
15. The display panel according to claim 14, wherein the first touch electrode adjacent to the second display area comprises a third branch electrode and a fourth branch electrode, the third branch electrode is located on a side of the first main electrode close to the second display area, the fourth branch electrode is located on a side of the first main electrode away from the second display area, and the third branch electrode and the fourth branch electrode are in an asymmetric structure with respect to the first main electrode;
the second touch electrode adjacent to the second display area includes a fifth electrode and a sixth electrode, the fifth electrode is located on one side of the second main electrode close to the second display area, the sixth electrode is located on one side of the second main electrode far from the second display area, and the fifth electrode and the sixth electrode are in an asymmetric structure with respect to the second main electrode.
16. The display panel according to claim 1, wherein the areas of the two first touch electrodes adjacent to the second display region are equal, and/or the areas of the two second touch electrodes adjacent to the second display region are equal.
17. The display panel according to claim 1, further comprising a first electrode layer, a light-emitting layer, and a second electrode layer which are stacked in this order in a direction away from the substrate base;
the first electrode layer includes a plurality of first electrodes corresponding to the light emitting elements, and the second electrode layer includes a patterned second electrode in the second display region, the second electrode including a plurality of openings corresponding to the light transmissive regions.
18. The display panel according to claim 17, further comprising a third display region which is provided around the second display region and which is located between the first display region and the second display region;
in the third display region, the second electrode layer is integrally provided.
19. The display panel of claim 18, wherein a projection of the third display area on the substrate base does not overlap a projection of at least one of the first touch electrode, the second touch electrode, and the dummy electrode on the substrate base.
20. The display panel of claim 18, wherein a projection of the third display area on the substrate base at least partially overlaps a projection of at least one of the first touch electrode, the second touch electrode, and the dummy electrode on the substrate base.
21. The display panel according to claim 20, wherein a projection of the third display area on the substrate base does not overlap with projections of the first touch electrode and the second touch electrode on the substrate base, and at least partially overlaps with a projection of the dummy electrode on the substrate base.
22. A display device comprising the display panel according to any one of claims 1 to 21.
CN202210993503.8A 2022-08-18 2022-08-18 Display panel and display device Pending CN115328334A (en)

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Application Number Priority Date Filing Date Title
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