Patent Application
20230075241
The present application relates to the technical field of display, and particularly to a display panel and display device.
With rapid development of electronic devices, users are requiring to have higher and higher screen-to-body ratios, such that the industry has shown more and more interest in all-screen displays of electronic devices.
In the related art, a display panel may be divided into a main screen area and a secondary screen area. Photosensitive elements can be placed under the secondary screen area and the secondary screen area can also be used to satisfy a display function. However, since the secondary screen area retains film structures, such as light-emitting devices and traces, etc., a diffraction problem of under-screen shoot will be caused when the photosensitive elements are shooting through the secondary screen area, resulting in a decrease in image quality.
Embodiments of the present application provide a display panel and a display device, which can alleviate the diffraction problem of under-screen shoot and improve image quality.
In a first aspect, an embodiment of the present application provide a display panel including a first display area that is a light-transmitting display area and includes a first sub-display area and a second sub-display area, the display panel including: an array substrate; a light-emitting functional layer, located on a side of an array substrate, a light-emitting functional layer including a plurality of first sub-pixels located in the first sub-display area and a plurality of second sub-pixels located in the second sub-display area; wherein a plurality of orthographic projection shapes of the plurality of second sub-pixels on the array substrate are identical, at least one of the first sub-pixels is a target sub-pixel, an orthographic projection shape of the target sub-pixel on the array substrate is identical to an orthographic projection shape of the second sub-pixel on the array substrate, each of the orthographic projection shape of the target sub-pixel on the array substrate and the orthographic projection shape of the second sub-pixel on the array substrate comprises a first center line and a second center line that are perpendicular to each other, and the first center line of the orthographic projection shape of the target sub-pixel intersects the first center line of the orthographic projection shape of the second sub-pixel.
In a second aspect, an embodiment of the present application provide a display device including at least one photosensitive element and the display panel as described in any embodiment of the first aspect, wherein each of the first sub-display area and the second sub-display area correspond to one of the at least one photosensitive element.
According to the display panel and display device of the embodiments of the present application, at least one of the first sub-pixels in the first sub-display area is a target sub-pixel, the plurality of orthographic projection shapes of the plurality of second sub-pixel on the array substrate are the same, the orthographic projection shape of the target sub-pixel on an array substrate is the same as an orthographic projection shape of the second sub-pixel on the array substrate, each of the orthographic projection shape of the target sub-pixel on the array substrate and the projection shape of the second sub-pixel on the array substrate includes the first center line and the second center line that are perpendicular to each other, and the first center line of the orthographic projection shape of the target sub-pixel intersects the first center line of the orthographic projection shape of the second sub-pixel. That is to say, a slit formed between target sub-pixels can intersect a slit formed between second sub-pixels, so that first diffraction light spots generated by light passing through the first sub-display area can intersect second diffraction light spots generated by light passing through the second sub-display area. Therefore, subsequently, initial images can be acquired through the first sub-display area and the second sub-display area, respectively. Since the diffraction light spots generated by the two sub-display areas intersect each other, positions where the diffraction light spots are located in the two initial images are different, so that the two initial images may be compared and synthesized and image information of positions where the diffraction light spots are located in one of the initial images can be replaced with image information of corresponding positions in the other initial image where no diffraction light spots or weaker diffraction light spots are located. Since two diffraction light spots intersect, the diffraction light spots in the synthesized image can be mitigated or disappear. Therefore, the present application can alleviate the diffraction problem of under-screen shoot and improve image quality.
Features and exemplary embodiments of various aspects of the present application will be described in details below. In order to make the objects, technical solutions and advantages of the present application clearer, the present application is further described in details below with reference to the accompany drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, but not to limit the present application.
Embodiments of the present application provide a display panel and a display device. Various embodiments of the display panel and the display device will be described below with reference to the accompany drawings.
As shown in
The display panel 100 includes a first display area AA1. The first display area AA1 is a light-transmitting display area. Exemplarily, the whole display area of the display panel 100 can be the first display area AA1, that is, the display panel 100 can be a light-transmitting display panel.
In embodiments of the present application, it is preferable that a light transmittance of the first display area AA1 is greater than or equal to 15%. In order to ensure that the light transmittance of the first display area AA1 is greater than 15%, or even greater than 40% or more, light transmittances of functional film layers in the display panel 100 in the embodiments of the present application may be greater than 50%, or even light transmittances of at least some of the functional film layers may be greater than 90%.
According to the display panel 100 of the embodiments of the present application, the first display area AA1 is the light-transmitting display area, so that photosensitive components may be integrated on the back of the first display area AA1 of the display panel 100 to realize under-screen integration of the photosensitive components such as cameras, while the first display area AA1 can display images. Thus, a display area of the display panel 100 can be increased and a full-screen design of a display device can be realized.
The first display area AA1 may include a first sub-display area AA11 and a second sub-display area AA12. Light transmittances of the first sub-display area AA11 and the second sub-display area AA12 may be the same. As illustrated in
The display panel 100 includes an array substrate 01 and a light-emitting functional layer 02 located on a side of the array substrate 01. The array substrate 01 may include first signal lines 10 and second signal lines 20. The light-emitting functional layer 02 includes first sub-pixels 110 and second sub-pixels 210. A plurality of first sub-pixels 110 are located in the first sub-display area AA11 and a plurality of second sub-pixels 210 are located in the second sub-display area AA12.
Exemplarily, the first sub-display area AA11 may include first sub-pixels 110 of at least three colors, and the second sub-display area AA12 may include second sub-pixels 210 of at least three colors. In the drawings of the present application, sub-pixels of the same color are represented by the same hatch pattern. It is illustrated in the drawings that the first sub-display area AA11 includes red first sub-pixels 110R, green first sub-pixels 110G and blue first sub-pixels 110B, and the second sub-display area AA12 includes red second sub-pixels 210R, green second sub-pixels 210G and blue second sub-pixels 210B.
Color types of sub-pixels included in the first sub-display area AA11 and the second sub-display area AA12 can be adjusted according to design needs of the display panel 100, and therefore are not limited to examples of the above embodiments. In addition, arrangements of sub-pixels in the first sub-display area AA11 and the second sub display area AA12 are also not limited to examples in the drawings of the present application.
At least one of the plurality of first sub-pixels 110 in the first sub-display area AA11 is a target sub-pixel 110T. A plurality of shapes formed by orthographic projections of the plurality of second sub-pixel 210 on the array substrate 01 are the same. A shape formed by an orthographic projection of the target sub-pixel 110T on the array substrate 01 and a shape formed by an orthographic projection of the second sub-pixel 210 on the array substrate 01 are the same. For example, the orthographic projection shape on the array substrate 01 of the target sub-pixel 110T and the second sub-pixel 210 are all rectangular shapes, elliptical shapes, triangular shapes, shapes of irregular polygons and the like. Orthographic projection shapes on the array substrate 01 of the other first sub-pixels 110 in the sub-display area AA11 except the target sub-pixel 110T may be the same as or may be different from orthographic projection shapes of the second sub-pixels 210 on an array substrate 01, which is not limited in the present application.
As illustrated in
It should be understood that as long as the first center line S11 and the second center line S12 pass through the center point O1 of the orthographic projection shape of the target sub-pixel 110T on an array substrate 01 and are perpendicular to each other, the orthographic projection shape of the target sub-pixel 110T may be symmetrical about the first center line S11 or the second center line S12, or may be asymmetrical, which is not limited in the present application. The first center line S21 and the second center line S22 of the orthographic projection shape of the second sub-pixel 210 are in the similar way.
It should also be understood that a position of the first center line S11 of the orthographic projection shape of the target sub-pixel 110T on the orthographic projection shape is the same as that of the first center line S21 of the orthographic projection shape of the second sub-pixel 210 on the orthographic projection shape, and similarly, a position of the second center line S12 of the orthographic projection shape of the target sub-pixel 110T on the orthographic shape the same as that of the second center line S22 of the orthographic projection shape of the second sub-pixel 210 on the orthographic shape, too. For example, in an example that the orthographic projection shape on the array substrate 01 of either the target sub-pixel 110T or the second sub-pixel 210 is a rectangular shape, the first center line S11, S21 may be a line perpendicular to the two short sides of the rectangular shape and passing through the center point of the rectangular shape, and the second center line S12, S22 may be a line perpendicular to the two long sides of the rectangular shape and passing through the center point of the rectangular shape. For another example, in an example that the orthographic projection shape on an array substrate 01 of either the target sub-pixel 110T or the second sub-pixel 210 is an elliptical shape (not illustrated), the first center line S11, S21 may be the long axis of the elliptical shape, and the second center line S12, S22 may be the short axis of the elliptical shape.
The first center line S11 of the orthographic projection shape of the target sub-pixel 110T intersects the first center line S21 of the orthographic projection shape of the second sub-pixel 210. It can be understood that the second center line S12 of the orthographic projection shape of the target sub-pixel 110T intersects the second center line S22 of the orthographic projection shape of the second sub-pixel 210.
Exemplarily, as illustrated in
That is to say, the orthographic projection shapes of the target sub-pixel 110T and the second sub-pixels 210 are placed on the array substrate 01 in different angles. That is, the target sub-pixel 110T is rotated by a certain angle relative to second sub-pixel 210.
In embodiments of the present application, the first center line S11 of the orthographic projection shape of the target a sub-pixel 110T is set to intersect the first center line S21 of the orthographic shape of the second sub-pixel 210, i.e., a slit formed between target sub-pixels 110T intersects a slit formed between second sub-pixels 210, so that a first diffraction light spot generated by light passing through the slit between the target sub-pixels 110T intersect a second diffraction light spot generated by light passing through the slit between the second sub-pixels 210, i.e., the first diffraction light spot generated by light passing through the first sub-display area intersects with the second diffraction light spot generated by light passing through the second sub-display area. That is to say, two different diffraction situations happen in the first sub-display area AA11 and the second sub display area AA12, i.e., there is a difference between diffraction light spots generated by the first sub-display area AA11 and the second sub-display area AA12. Therefore, initial images can be acquired subsequently through the first sub-display area AA11 and the second sub-display area AA12, respectively. Since the diffraction light spots generated by the two sub-display areas intersect each other, positions where the diffraction light spots are located in the two initial images are different, so that the two initial images can be compared and synthesized and image information of positions where the diffraction light spots are located in one of the initial images can be replaced with image information of corresponding positions in the other initial image where no diffraction light spots or weaker diffraction light spots are located. Since two diffraction light spots intersect, the diffraction light spots in the synthesized image can be mitigated or disappear. Therefore, the present application can alleviate the diffraction problem of under-screen shoot and improve image quality.
In some optional embodiments, in order to generate two kinds of diffraction light spots that intersect, an angle formed by an intersection of the first center line S11 of the orthographic projection shape of the target sub-pixel 110T and the first center line S21 of the orthographic projection shape of the second sub-pixel 210 should be within a preset range of angles. Exemplarily, the preset range of angles may be 30 degrees˜150 degrees. For example, the angle formed by the intersection of the first center line S11 of the orthographic projection shape of the target sub-pixel 110T and the first center line S21 of the orthographic projection shape of the second sub-pixel 210 may be 30 degrees, 45 degrees, 100 degrees, 150 degrees and the like. The angle formed by the intersection of the first center line S11 of the orthographic projection shape of the target sub-pixel 110T and the first center line S21 of the orthographic projection shape of the second sub-pixel 210 is within the preset range of angles, so that differences between the first diffraction light spot generated by light passing through the first sub-display area and the second diffraction light spot generated by light passing through the second sub-display area can be big enough, and thereby diffraction light spots in the synthesized image can be lower than a preset value in subsequent algorithm compensation.
Optionally, the angle formed by the intersection of the first center line S11 of the orthographic projection shape of the target sub-pixel 110T and the first center line S21 of the orthographic projection shape of the second sub-pixel 210 may be 90 degrees, i.e., the first center line S11 of the orthographic projection shape of the target sub-pixel 110T and the first center line S21 of the orthographic projection shape of the second sub-pixel 210 are perpendicular. In that case, differences between the first diffraction light spot generated by light passing through the first sub-display area and the second diffraction light spot generated by light passing through the second sub-display area can be maximized.
It can be understood that, since the second center line and the first center line are perpendicular to each other, an angle formed by an intersection of the second center line S12 of the orthographic projection shape of the target sub-pixel 110T and the second center line S22 of the orthographic projection shape of the second sub-pixel 210 is also the preset range of angles, i.e., 30 degrees˜150 degrees.
In some optional embodiments, as illustrated in
Exemplarily, an arrangement of first sub-pixels 110 in a first repeating unit 10 may be to the same as an arrangement of second sub-pixels 210 in a second repeating unit 20, that is, the number and arranging order in color of first sub-pixels 110 in a first repeating unit 10 may be the same as the number and arranging order in color of second sub-pixels 210 in a second repeating unit 20.
Further, at least one of the first sub-pixels 110 in the first repeating units 10 is a target sub-pixel 110T, and first center lines S11 of orthographic projection shapes of all target sub-pixels 110T belonging to the same first repeating unit 10 are parallel to each other. That is to say, placement angles of the orthographic projection shapes on an array substrate 01 of target sub-pixels 110T belonging to the same first repeating unit 10 are identical, that is, rotation angles of all the target sub-pixels 110T belonging to the same first repeating unit 10 relative to the second sub-pixels 210 are identical. In an aspect, the first center lines S11 of the orthographic projection shapes of the target sub-pixels 110T belonging to the same first repeating unit 10 are set to be parallel, so that disorders in diffraction light spots of the first sub-display area may be avoided, and therefore it can be avoided that there is no obvious difference between the diffraction light spots generated by the first sub-display AA11 and the second sub-display area AA12; and in another aspect, the complexity of process can be reduced.
In some optional embodiments, as illustrated in
The first center lines S11 of the orthographic projection shapes of the target sub-pixels 110T belonging to the different first repeating units 10 are set to intersect each other, so that it can be avoided that all first sub-pixels 110 in the first sub-display area AA11 are placed according to one rule, and therefore the diffraction phenomenon of the first sub-display area AA11 itself can be reduced, while there are differences between the diffraction light spots generated by the first sub-display area AA11 and the second sub-display area AA12.
In some optional embodiments, sizes of the orthographic projection shapes of the target sub-pixels 110T on the array substrate 01 are to the same as sizes of the orthographic projection shapes of the second sub-pixels 210 on the array substrate 01. In this way, influencing factors of diffraction of the first sub-display area AA11 and the second sub display area AA12 can be concentrated on differences in the placement angles, so as to avoid that there is no obvious difference between diffraction light spots generated by the first sub-display area AA11 and the second sub display area AA12.
In some optional embodiments, as described above, the first sub-pixels 110 can have at least three colors. The drawings of the present application illustrate that the first sub-pixels 110 include red first sub-pixels 110R, green first sub-pixels 110G and blue first sub-pixels 110B. First sub-pixels 110 of at least one color are target sub-pixels 110T. For example, as illustrated in
Orthographic projection shapes of first sub-pixels 110 of other colors on the array substrate 01 are either circular shapes or square shapes. For example, as illustrated in
Inventors of the present application found that when orthographic projection shapes of sub-pixels on the array substrate 01 are set to be circular shapes or square shapes, the diffraction phenomenon is not obvious. Therefore, according to embodiments of the present application, the diffraction phenomenon of the first sub-display area AA11 itself can be reduced, while there are differences between the diffraction light spots generated by the first sub-display area AA11 and the second sub-display area AA12.
In some optional embodiments, as illustrated in
In some embodiments, the first pixel circuit 30 and the second pixel circuit 40 may have the same circuit structure. The circuit structure may be any one of the 2T1C circuit, 7T1C circuit, 7T2C circuit, or 9T1C circuit. Herein, the “2T1C circuit” refers to a pixel circuit including 2 thin film transistors (T) and 1 capacitor (C) therein, and the others, i.e., the “7T1C circuit”, “7T2C circuit”, “9T1C circuit” are similar.
Orthographic projection shapes of the first pixel circuit 30 and the second pixel circuit 40 on the array substrate 01 may be the same. For example, the orthographic projection shapes of the first pixel circuit 30 and the second pixel circuit 40 on the array substrate 01 may be rectangular shapes, elliptical shapes, triangular shapes, shapes of irregular polygons, and the like.
An orthographic projection shape of the first pixel circuit 30 on the array substrate 01 may include a center point O3, and include a third center line S31 and a fourth center line S32 passing through its center point O3 and perpendicular to each other. An orthographic projection shape of the second pixel circuit 40 on the array substrate 01 may include a center point O4, and include a third center line S41 and a fourth center line S42 passing through its center point O4 and perpendicular to each other.
Similarly, as long as a third center line and a fourth center line pass through a center point of an orthographic projection shape of a pixel circuit and are perpendicular to each other, the orthographic projection shape of the pixel circuit may be symmetrical about the third center line or the fourth center line, or may be asymmetrical, which is not limited in the present application.
A third center line S31 of an orthographic projection shape of the first pixel circuit 30 may be parallel to a first center line S11 of an orthographic projection shape of a target sub-pixel 110T. It can be understood that a fourth center line S32 of the orthographic projection shape of the first pixel circuit 30 may be parallel to a second center line S12 of the orthographic projection shape of the target sub-pixel 110, too. That is to say, a placement angle of the orthographic projection shape of the first pixel circuit 30 on the array substrate 01 is the same as a placement angle of the orthographic projection shape of the target sub-pixel 110T on the array substrate 01.
A third center line S41 of an orthographic projection shape of a second pixel circuit 40 may be parallel to a first center line S21 of an orthographic projection shape of a second sub-pixel 210. It can be understood that a fourth center line S42 of the orthographic projection shape of the second pixel circuit 40 may be parallel to a second center line S22 of the orthographic projection shape of the second sub-pixel 210, too. That is to say, a placement angle of the orthographic projection shape of the second pixel circuit 40 on an array substrate 01 is the same as a placement angle of the orthographic projection shape of the second sub-pixel 210 on the array substrate 01.
Light transmittances of elements in the pixel circuits are relatively low, and therefore the pixel circuits may have relatively strong influences on diffraction. Placement angles of orthographic projection shapes of pixel circuits and sub-pixels in an individual sub-display area on the array substrate can be set to be the same, so that the diffraction light spots of the first sub-display area AA11 and the second sub-display area AA12 can be prevented from having multiple directions, so as to avoid that there is no obvious difference between diffraction light spots generated by the first sub-display area AA11 and the second sub display area AA12.
In other optional embodiments, as shown in
As mentioned above, light transmittances of elements in the pixel circuits are relatively low, and therefore the pixel circuits may have relatively strong influences on diffraction. The first pixel circuit 30 and the second pixel circuit 40 are set in the transitional display area TA, so that, in one aspect, diffraction in the first sub-display area and the second sub-display area can be completely avoided, and in another aspect, the light transmittances of the first sub-display area and the second sub-display area can be improved to further improve the image quality.
In some optional embodiments, as illustrated in
Exemplarily, as further shown in
In some optional embodiments, as illustrated in
A first sub-pixel 110 may include a first electrode 112, a first light-emitting layer 111 and a second electrode 113 that are stacked. The first light-emitting layer 111 may be located in the first pixel opening K1, and the first light-emitting layer 111 may be located between the first electrode 112 and the second electrode 113, and the first electrode 112 may be located between the second electrode 113 and the array substrate 01. One of the first electrode 112 and the second electrode 113 may be an anode, and the other one may be a cathode.
The second sub-pixel 210 may include a third electrode 212, a second light-emitting layer 211 and a fourth electrode 213 that are stacked. The second light-emitting layer 211 may be located in the second pixel opening K2, and the second light-emitting layer 211 may be located between the third electrode 212 and the fourth electrode 213, and the third electrode 212 may be located between the fourth electrode 213 and the array substrate 01. One of the third electrode 212 and the fourth electrode 213 is may be anode, and the other one may be a cathode.
The third sub-pixel 310 may include a fifth electrode 312, a third light-emitting layer 311 and a sixth electrode 313 that are stacked. The third light-emitting layer 311 may be located in the third pixel opening K3, and the third light-emitting layer 311 may be located between the fifth electrode 312 and the sixth electrode 313, and the fifth electrode 312 may be located between the sixth electrode 313 and the array substrate 01. One of the fifth electrode 312 and the sixth electrode 313 may be an anode, and the other one may be a cathode.
In this embodiment, an example is illustrated where the first electrode 112, the third electrode 212 and the fifth electrode 312 are anodes, and the second electrode 113, the fourth electrode 213 and the sixth electrode 313 are cathodes. In some embodiments, the second electrode 113, the fourth electrode 213, and the sixth electrode 313 may be interconnected as a common electrode.
Generally, since light transmittances of the first light-emitting layer 111, the second light-emitting layer 211, the third light-emitting layer 311, and the second electrode 113, the fourth electrode 213, the sixth electrode 313 may be relatively high, these film layers may have less influences on diffraction, while since light transmittances of the first electrode 112, the third electrode 212, and the fifth electrode 312 are relatively low, these film layers may have stronger influences on diffraction. Based on this, an orthographic projection shape of a first sub-pixel 110 on the array substrate 01 may include an orthographic projection shape of a first electrode 112 on the array substrate 01, an orthographic projection shape of a second sub-pixel 210 on the array substrate 01 may include an orthographic projection shape of a third electrode 212 on the array substrate 01, and an orthographic projection shape of a third sub-pixel 310 on the array substrate 01 may include an orthographic projection shape of a fifth electrode 312 on the array substrate 01.
Exemplarily, the display panel 100 may further includes an encapsulation layer, and a polarizer and a cover plate located above the encapsulation layer. The cover plate can be disposed directly on the encapsulation layer without the polarizer. Alternatively, the cover plate can be disposed directly on at least the encapsulation layer of the first display area without the polarizer, so as to prevent the polarizer from influencing a light collection amount of a photosensitive element deposited correspondingly under the first display area. Of course, a polarizer can be disposed above the encapsulation layer of the first display area AA1.
An embodiment of the present application further provides a display device, which may include photosensitive components and the display panel 100 of any one of the foregoing embodiments. An embodiment of the display device will be taken as an example for illustration below. In this embodiment, the display device may include the display panel 100 of the above-mentioned embodiments.
The display panel 100 may include a first surface S1 and a second surface S2 that are opposite to each other. The first surface S1 may be a display surface. The display device may further include photosensitive component(s) 200 located on the second surface S2 of the display panel 100. A number of the photosensitive component(s) 200 may be two. One of the components 200 may correspond to a position of the first sub-display area AA11, and the other one of photosensitive components 200 may correspond to a position of the second sub-display AA12.
The two photosensitive components 200 can identify first diffraction light spots generated by the first sub-display area AA11 and second diffraction light spots generated by the second sub-display area AA12, respectively, so that one of two initial images obtained respectively by the two photosensitive components 200 can contain information about the first diffraction light spots and the other one can contain information about the second diffraction light spots.
The photosensitive components 200 may be image collection devices used for collecting external image information. In this embodiment, the photosensitive components 200 may be Complementary Metal Oxide Semiconductor (CMOS) image collection devices, and in some other embodiments, the photosensitive components 200 may be other forms of image collection devices such as Charge-coupled Device (CCD) image collection devices.
It can be understood that the display device 1000 provided by the embodiment of the present application may be a dual-camera display device. In some embodiments, the display device 1000 may further include an image processing module 300 that is electrically connected to both of the two photosensitive components 200. Specifically, when the display device is shooting, two cameras can work simultaneously to each obtain an initial image. An initial image shot by a camera corresponding to the first sub-display area may capture the first diffraction light spots, an initial image shot by a camera corresponding to the second sub-display area may capture the second diffraction light spots, and the two kinds of diffraction light spots intersect, i.e., there are differences between the diffraction light spots of the first sub-display area and the diffraction light spots of the second sub-display area. The image processing module 300 can identify the differences through a under-screen shooting algorithm, compare and synthesize shooting information of the two initial images, and replace image information of positions where the diffraction light spots are located in one of the initial image with image information of corresponding positions in the other initial image where no diffraction light spots or weaker diffraction light spots are located, so that since two diffraction light spots intersect, the diffraction light spots in synthesized image can be mitigated or disappear.
Specifically, a Modulation Transfer Function (MTF) or a Spatial Frequency Response (SFR) of an image can be used to evaluate an influence of diffraction light spots in the image. The smaller of the influence of diffraction light spots is, the higher the MTF or the SFR of the image will be, and the higher a resolution of the image will be, i.e., the clearer the image will be.
This specification described these embodiments specifically in order to better explain principles and practical applications of the present application, so that those skilled in the art can make good use of the present application and modifications based on the present application. The scope of the present application is limited only by the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202010978768.1 | Sep 2020 | CN | national |
The present application is a continuation of International Application No. PCT/CN2021/099095 filed on Jun. 9, 2021, which claims the priority to Chinese patent application No. 202010978768.1 filed on Sep. 17, 2020, both of which are incorporated herein by reference in their entireties.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN2021/099095 | Jun 2021 | US |
| Child | 17986335 | US |
