CN114627770A - Display panel and display device - Google Patents
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- CN114627770A CN114627770A CN202011462685.3A CN202011462685A CN114627770A CN 114627770 A CN114627770 A CN 114627770A CN 202011462685 A CN202011462685 A CN 202011462685A CN 114627770 A CN114627770 A CN 114627770A
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Abstract
The embodiment of the invention discloses a display panel and a display device. The pixel density of the first display area of the display panel is greater than that of the second display area; the second display area comprises a plurality of first pixel units; the boundary of the second display area, which is adjacent to the first display area, is provided with an arc-shaped section; the arc-shaped section comprises a starting point and an end point, and the extending directions of a first tangent at the starting point and a second tangent at the end point of the arc are crossed with each other; the arc-shaped section comprises a first sub arc-shaped section and a second sub arc-shaped section, each sub arc-shaped section comprises a plurality of steps, and each step comprises a first edge parallel to the first tangent line and a second edge parallel to the second tangent line; along the direction that the starting point points to the end point, the number of first pixel units included in the first edge of the step of the first sub-arc-shaped section is gradually reduced; along the direction that the terminal point points to the starting point, the number of the first pixel units included by the second edge of the step of the second sub-arc-shaped segment is gradually reduced. The technical scheme provided by the embodiment of the invention has the advantage of arc-shaped and attractive display boundary.
Description
Technical Field
The embodiment of the invention relates to the technical field of display panels, in particular to a display panel and a display device.
Background
With the development of display technology and the improvement of living standard of people, display devices are widely used, and the requirements on the screen occupation ratio of the display devices are higher and higher, so that the comprehensive screen display of the display devices is widely concerned by the industry. The existing display device integrates a front camera, an earphone, an infrared sensing element and the like in the transparent display area by arranging the transparent display area on the display screen, however, the display effect of the display boundary of the existing transparent display area and the non-transparent display area is poor.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, and aims to solve the problem that the display effect of the display boundary of the conventional slotted area is poor.
In order to realize the technical problem, the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a display panel, including:
the display device comprises a first display area and a second display area which is arranged adjacent to the first display area; the pixel density of the first display area is greater than that of the second display area; the second display area comprises a plurality of first pixel units; the boundary of the second display area, which is adjacent to the first display area, is provided with an arc-shaped section; the arc-shaped section comprises a starting point and an end point, and the extending directions of a first tangent of the arc-shaped section at the starting point and a second tangent of the arc-shaped section at the end point are crossed with each other;
the arc-shaped section comprises a first sub arc-shaped section and a second sub arc-shaped section, one end point of the first sub arc-shaped section is a starting point, and one end point of the second sub arc-shaped section is an end point; each sub-arc-shaped section comprises a plurality of steps, and each step comprises a first edge parallel to the first tangent line and a second edge parallel to the second tangent line;
along a first direction in which the starting point points to the end point, the number of first pixel units included in a first edge of a step of the first sub-arc-shaped section is gradually reduced; along a second direction in which the end point points to the start point, the number of first pixel units included in the second edge of the step of the second sub-arc-shaped segment is gradually reduced.
Further, the first display area comprises a plurality of second pixel units;
the first length of the first pixel unit along the direction parallel to the first tangent line is M times of the second length of the second pixel unit along the direction parallel to the first tangent line, and the third length of the first pixel unit along the direction parallel to the second tangent line is N times of the fourth length of the second pixel unit along the direction parallel to the second tangent line; wherein M and N are both positive integers greater than or equal to 2.
Furthermore, along the first direction, the number of first pixel units included in the first edge of the step of the first sub-arc-shaped section accords with an arithmetic progression;
along the second direction, the number of the first pixel units included by the second edge of the step of the second sub-arc-shaped section accords with the arithmetic progression.
Furthermore, the number of the first pixel units included by the second edge of the step of each first sub-arc-shaped section is equal;
the number of the first pixel units included in the first edge of the step of each second sub-arc-shaped segment is equal.
Furthermore, the number of the first pixel units included in the second edge of the step of the first sub-arc-shaped segment is equal to the number of the first pixel units included in the first edge of the step of the second sub-arc-shaped segment.
Further, the length of the first pixel unit and the second pixel unit parallel to the first tangent line is smaller than the length of the first pixel unit and the second pixel unit parallel to the second tangent line;
the number of the steps of the first sub arc-shaped section is larger than that of the steps of the second sub arc-shaped section.
Further, the arc segment further comprises:
the third sub arc-shaped section is arranged between the first sub arc-shaped section and the second sub arc-shaped section;
the third sub-arc segment comprises a plurality of steps;
the number of the first pixel units included by the first edge of the step of the third sub-arc-shaped section is equal to the number of the first pixel units included by the second edge of the step of the third sub-arc-shaped section.
Furthermore, each of the first pixel unit and the second pixel unit comprises a first sub-pixel, a second sub-pixel and a third sub-pixel;
along the direction parallel to the first tangent line, the first sub-pixel, the second sub-pixel and the third sub-pixel are sequentially arranged to form a sub-pixel column; in two adjacent sub-pixel columns, the geometric center of a third sub-pixel of one sub-pixel column is positioned between the geometric centers of a first sub-pixel and a second sub-pixel of the other sub-pixel column, which are adjacent to the third sub-pixel.
Further, along the direction parallel to the first tangent line, the distance between two adjacent sub-pixels in the second display area is N times the distance between two adjacent sub-pixels in the first display area;
the distance between two adjacent sub-pixel columns in the second display area is N times the distance between two adjacent sub-pixel columns in the first display area.
In a second aspect, an embodiment of the present invention further provides a display device, including the display panel according to any one of the first aspects, and an optical sensor;
the optical sensor is arranged in the second display area.
The display panel provided by the embodiment of the invention comprises a first display area and a second display area which is arranged adjacent to the first display area; the pixel density of the first display area is greater than that of the second display area; the second display area comprises a plurality of first pixel units; the boundary of the second display area, which is adjacent to the first display area, is provided with an arc-shaped section; the arc-shaped section comprises a starting point and an end point, and the extending directions of a first tangent of the arc-shaped section at the starting point and a second tangent of the arc-shaped section at the end point are crossed with each other; the arc-shaped section comprises a first sub arc-shaped section and a second sub arc-shaped section, one end point of the first sub arc-shaped section is a starting point, and one end point of the second sub arc-shaped section is an end point; each sub-arc-shaped section comprises a plurality of steps, and each step comprises a first edge parallel to the first tangent line and a second edge parallel to the second tangent line; along a first direction in which the starting point points to the end point, the number of first pixel units included in a first edge of a step of the first sub-arc-shaped section is gradually reduced; along a second direction in which the end point points to the start point, the number of first pixel units included in the second edge of the step of the second sub-arc-shaped segment is gradually reduced. In addition, the scheme of the embodiment enables the sawtooth sense of the junction of the first display area and the second display area to be small, the arc shape of the boundary of the second display area to be attractive, the display effect of the display panel to be better, and the problem that the display effect of the display boundary of the transparent display area of the existing display panel is poor is solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of a region C of the display panel of FIG. 1 according to an embodiment of the present invention;
FIG. 4 is an enlarged schematic view of a region C of another display panel provided in an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a first sub-arc segment of another display panel according to an embodiment of the present invention;
fig. 6 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 structures related to the present invention are shown in the drawings, not all of them.
As mentioned in the background art, the display effect of the display boundary of the transparent display area of the conventional display device is not good, and the transparent display area of the conventional display device may be square, which affects the display effect of the product and the user experience.
Based on the above technical problem, the present embodiment proposes the following solutions:
fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention. Fig. 2 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Fig. 3 is an enlarged schematic view of a structure of a region C in fig. 1 of a display panel according to an embodiment of the present invention. With reference to fig. 1 to 3, a display panel according to an embodiment of the present invention includes a first display region 1 and a second display region 2 disposed adjacent to the first display region 1; the pixel density of the first display area 1 is greater than that of the second display area 2; the second display area 2 includes a plurality of first pixel units 201; the boundary of the second display area 2 adjacent to the first display area 1 is provided with an arc-shaped section 5; wherein the arc segment 5 comprises a starting point and an end point, and the extending directions of a first tangent 3 of the arc segment 5 at the starting point and a second tangent 4 of the arc segment 5 at the end point are mutually crossed; the arc segment 5 comprises a first sub-arc segment 501 and a second sub-arc segment 502, wherein one endpoint of the first sub-arc segment 501 is a starting point, and one endpoint of the second sub-arc segment 502 is an end point; each sub-arc segment comprises a plurality of steps 6, each step 6 comprises a first edge 601 parallel to the first tangent line 3 and a second edge 602 parallel to the second tangent line 4; in a first direction in which the starting point points to the end point, the number of first pixel cells 201 included in the first edge 601 of the step 6 of the first sub-arc segment 501 gradually decreases; in a second direction, in which the end point points to the start point, the second side 602 of the step 6 of the second sub-arc segment 502 comprises a gradually decreasing number of the first pixel cells 201.
Specifically, the light transmittance of the second display area 2 is greater than that of the first display area 1, and optical devices such as an optical sensor may be disposed in the second display area 2, and the optical sensor realizes a light sensing function through the second display area 2. The pixel density of the first display area 1 is greater than the pixel density of the second display area 2, the ratio between the pixel density of the first display area 1 and the pixel density of the second display area 2 may be an integer, the boundary between the second display area 2 and the first display area 1 is set as the arc segment 5, and the arc segment 5 is set to transition from the starting point to the end point of the arc segment 5 from the first sub-arc segment 501 and the second sub-arc segment 502. In the first direction, the number of the first pixel cells 201 included in the first edge 601 of the step 6 of the first sub-arc segment 501 gradually decreases; along the second direction, the number of the first pixel units 201 included in the second edge 602 of the step 6 of the second sub-arc-shaped segment 502 is gradually reduced, so that the transition from the first sub-arc-shaped segment 501 to the second sub-arc-shaped segment 502 is smoother, the jaggy feeling of the display panel at the arc-shaped boundary of the first display area 1 and the second display area 2 is smaller, and the display effect is better.
It should be noted that fig. 1 exemplarily shows a case where the second display area is a rounded rectangle, fig. 2 exemplarily shows a case where the second display area is a circle, and the second display area may be provided in any shape including an arc segment as needed, which is not limited herein.
In the display panel provided by this embodiment, the number of the first pixel units included in the first edge of the step of the first sub-arc segment is gradually decreased along the first direction in which the starting point points to the end point; along a second direction in which the end point points to the start point, the number of first pixel units included in the second edge of the step of the second sub-arc-shaped segment is gradually reduced. In addition, the scheme of the embodiment enables the sawtooth sense of the junction of the first display area and the second display area to be small, the arc shape of the boundary of the second display area to be attractive, the display effect of the display panel to be better, and the problem that the display effect of the display boundary of the transparent display area of the existing display panel is poor is solved.
Optionally, with continued reference to fig. 3, the first display region 1 includes a plurality of second pixel units 101, and the first length L of the first pixel unit 201 along the direction parallel to the first tangent 32Is the second length L of the second pixel unit 101 along the direction parallel to the first tangent 31M times, a third length L of the first pixel cell 201 in a direction parallel to the second tangent 44Is the fourth length L of the second pixel unit 101 along the direction parallel to the second tangent line 43N times of; wherein M and N are both positive integers greater than or equal to 2.
In particular, the second length L1Refers to the distance between the side of the second pixel cell 101 adjacent to the previous second pixel cell 101 and the side adjacent to the next second pixel cell 101 in a direction parallel to the first tangent line 3. First length L2Refers to the side of the first pixel cell 201 adjacent to the last first pixel cell 201 and the side below along the direction parallel to the first tangent line 3The distance between adjacent sides of one first pixel cell 201. A fourth length L3Refers to the distance between the edge of the second pixel cell 101 adjacent to the previous second pixel cell 101 and the edge adjacent to the next second pixel cell 101 along the direction parallel to the second tangent line 4. A third length L4Refers to the distance between the side of the first pixel cell 201 adjacent to the previous first pixel cell 201 and the side adjacent to the next first pixel cell 201 in the direction parallel to the second tangent line 4.
A first length L in a direction parallel to the first tangent 32Is a second length L1I.e. in a direction parallel to the first tangent 3, one first pixel cell 201 corresponds to M second pixel cells 101. A third length L in a direction parallel to the second tangent 44Is a fourth length L3I.e. in a direction parallel to the second tangent 4, one first pixel cell 201 corresponds to N second pixel cells 101. The number of the pixel units of the first display area 1 and the second display area 2 at the first side 601 or the second side 602 of the step 6 can be an integer, so that the color shift is small when the picture is displayed at the boundary of the second display area 2 adjacent to the first display area 1. It should be noted that M and N may be the same or different, and are not limited herein.
Exemplarily, fig. 3 exemplarily shows a first length L of the first pixel unit 201 in a direction parallel to the first tangent 32Is the second length L of the second pixel unit 101 along the direction parallel to the first tangent 312 times, a third length L of the first pixel unit 201 along a direction parallel to the second tangent line 44Is the fourth length L of the second pixel unit 101 along the direction parallel to the second tangent line 432 times higher. Referring to fig. 3, in the first direction, the first side 601 of the step 6 of the first sub arc-shaped segment 501 includes 4, 3, 2 and 1 numbers of the first pixel units 201, and the first side 601 of the step 6 of the first sub arc-shaped segment 501 corresponds to 8, 6, 4 and 2 numbers of the second pixel units 101; the numbers of the second pixel units 101 and the first pixel units 201 corresponding to the first edge 601 of each step 6 of the first sub-arc segment 501 are both integer, so that the color cast is reduced, and the color cast is reduced along the first edgeIn the direction, the number of the pixel units corresponding to the first edge 601 gradually decreases, so that the transition from the first tangent line 3 to the first sub-arc 501 and the arc shape are smoother, the saw tooth feeling is lower, and the display effect is better. Along the second direction, the number of the first pixel cells 201 included in the second side 602 of the step 6 of the second sub-arc-shaped segment 502 is 3, 2 and 1, respectively, and the number of the second pixel cells 101 included in the second side 602 of the step 6 of the second sub-arc-shaped segment 502 is 6, 4 and 2, respectively; the number of the second pixel units 101 and the number of the first pixel units 201 corresponding to the second edge 602 of each step 6 of the second sub-arc-shaped section 502 are both integer, the color cast is reduced, and along the second direction, the number of the pixel units corresponding to the second edge 602 is gradually reduced, so that the transition from the second tangent line 4 to the second sub-arc-shaped section 502 and the arc shape are smoother, the saw tooth feeling is lower, and the display effect is better. It should be noted that N may be other positive integers, and is not limited herein.
It should be noted that, along the first direction, the number of the second pixel units 101 included in the first edge 601 of the step 6 of the first sub-arc-shaped segment 501 gradually decreases; along the second direction, the number of the second pixel units 101 included in the second edge 602 of the step 6 of the second sub-arc-shaped segment 502 is gradually reduced, and the first pixel units 201 and the second pixel units 101 are matched, so that the transition from the first sub-arc-shaped segment 501 to the second sub-arc-shaped segment 502 is smoother, the jaggy feeling of the display panel at the arc-shaped boundary of the first display area 1 and the second display area 2 is smaller, and the display effect is better.
Optionally, along the first direction, the number of the first pixel units 201 included in the first edge 601 of the step 6 of the first sub-arc segment 501 corresponds to the arithmetic progression; along the second direction, the second side 602 of the step 6 of the second sub-arc segment 502 comprises the number of the first pixel units 201 according to the arithmetic difference number sequence.
Specifically, the arrangement is such that the transition between the steps 6 of the first sub-arc segment 501 in the first direction is smoother, and the jaggy feel of the first sub-arc segment 501 is smaller; the transition between the steps 6 of the second sub-arc 502 in the second direction is smoother and the second sub-arc 502 has less jaggy feel.
Exemplarily, fig. 3 exemplarily shows that the first side 601 of each step 6 included in the first sub-arc segment 501 includes 4 first pixel units 201, 3 first pixel units 201, 2 first pixel units 201, and 1 first pixel unit 201, respectively; the second side 602 of each step 6 included in the second sub-arc-shaped segment 502 includes the cases of 1 first pixel unit 201, 2 first pixel units 201, and 3 first pixel units 201, respectively. The first side 601 of each step 6 included in the first sub-arc segment 501 includes 8 second pixel units 101, 6 second pixel units 101, 4 second pixel units 101, and 2 second pixel units 101; the second side 602 of each step 6 included in the second sub-arc 502 includes 2 second pixel units 101, 4 second pixel units 101, and 6 second pixel units 101, respectively.
Optionally, on the basis of the above embodiment, with continued reference to fig. 1 to fig. 3, the second edge 602 of the step 6 of each first sub-arc segment 501 includes equal number of first pixel units 201; the first side 601 of the step 6 of each second sub-arc segment 502 comprises the same number of first pixel units 201.
Specifically, along the second direction, the number of the first pixel units 201 included in the second side 602 of the step 6 of each first sub-arc-shaped segment 501 is equal, that is, the width of the second side 602 of the step 6 of the first sub-arc-shaped segment 501 is the same, so that the jaggy feeling of the first sub-arc-shaped segment 501 can be reduced by adjusting the number of the first pixel units 201 included in the first side 601 of the step 6 of the first sub-arc-shaped segment 501, and the smoothness of the first sub-arc-shaped segment 501 is improved.
Along the first direction, the number of the first pixel units 201 included in the first edge 601 of the step 6 of each second sub-arc-shaped segment 502 is equal, so that the saw-tooth feeling of the second sub-arc-shaped segment 502 can be reduced by adjusting the number of the first pixel units 201 included in the second edge 602 of the step 6 of the second sub-arc-shaped segment 502, and the smoothness of the second sub-arc-shaped segment 502 is improved.
Optionally, with continued reference to fig. 3, the second side 602 of the step 6 of the first sub-arc segment 501 comprises the same number of first pixel cells 201 as the first side 601 of the step 6 of the second sub-arc segment 502.
Specifically, the setting can make the step length of the first sub-arc segment 501 along the first direction step 601 size change consistent with the step length of the second sub-arc segment 502 including the second side 602 along the second direction step 6 size change, so that the radian of the first sub-arc segment 501 is close to the radian of the second sub-arc segment 502, the radian of the whole arc segment 5 is consistent, the smoothness and the aesthetic feeling of the arc segment 5 are improved, and the display effect of the display panel at the boundary of the second display area 2 is improved.
Optionally, on the basis of the above embodiment, the length parallel to the first tangent 3 of each of the first pixel unit 201 and the second pixel unit 101 in conjunction with fig. 3 is smaller than the length parallel to the second tangent 4; the number of steps 6 of the first sub-arc segment 501 is greater than the number of steps 6 of the second sub-arc segment 502.
Specifically, referring to fig. 3, the length of the second pixel unit 101 parallel to the first tangent line 3 is less than the length parallel to the second tangent line 4, and the length of the first pixel unit 201 parallel to the first tangent line 3 is less than the length parallel to the second tangent line 4, so that when the same first pixel unit 201 is included, the length of the first edge 601 of the first arc-shaped segment 501 is less than the length of the second edge 602 of the second arc-shaped segment 502, and by setting the number of the steps 6 of the first sub-arc-shaped segment 501 to be greater than the number of the steps 6 of the second sub-arc-shaped segment 502, the arc length of the first sub-arc-shaped segment 501 is close to the shape and length of the second sub-arc-shaped segment 502, so that the shape of the arc-shaped segment 5 is more beautiful.
Optionally, fig. 4 is an enlarged schematic view of a structure of a region C in fig. 1 of another display panel provided in an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 4, the arc segment 5 further includes a third sub-arc segment 503 disposed between the first sub-arc segment 501 and the second sub-arc segment 502; third sub-arc segment 503 comprises a plurality of steps 6; the first side 601 of the step 6 of the third sub-arc segment 503 comprises the same number of first pixel cells 201 as the second side 602 of the step 6 of the third sub-arc segment 503.
Specifically, this arrangement can further reduce the jaggy feel of the arc segment 5 by smoothly transitioning the first sub arc segment 501 to the second sub arc segment 502 through the third sub arc segment 503 disposed between the first sub arc segment 501 and the second sub arc segment 502 when the length of the arc segment 5 is long.
Optionally, fig. 5 is a schematic structural diagram of a first sub-arc segment of another display panel provided in the embodiment of the present invention. On the basis of the above embodiment, referring to fig. 5, each of the first pixel unit 201 and the second pixel unit 101 includes a first sub-pixel 701, a second sub-pixel 702, and a third sub-pixel 703; along the direction parallel to the first tangent line, the first sub-pixel 701, the second sub-pixel 702 and the third sub-pixel 703 are sequentially arranged to form a sub-pixel column; in two adjacent sub-pixel columns, the geometric center of the third sub-pixel 703 of one sub-pixel column is located between the geometric centers of the first sub-pixel 701 and the second sub-pixel 702 of the other sub-pixel column adjacent to the third sub-pixel 703.
Specifically, the first subpixel 701, the second subpixel 702, and the third subpixel 703 may be set to a red subpixel, a green subpixel, and a blue subpixel. The first subpixel 701, the second subpixel 702, and the third subpixel 703 may also be set to a green subpixel, a blue subpixel, and a red subpixel; alternatively, the first subpixel 701, the second subpixel 702, and the third subpixel 703 may be configured as a blue subpixel, a red subpixel, and a green subpixel, and are not particularly limited herein.
Specifically, the first display area 1 can be set as a main screen display area, the second display area 2 is a sub-screen display area, and since the pixel density of the second display area 2 is lower than that of the first display area 1, the light transmission effect of the second display area 2 is better than that of the first display area 1, and an optical sensor can be set in the sub-screen display area. Alternatively, on the basis of the above embodiment, with continuing reference to fig. 5, the distance D between two adjacent sub-pixels 7 of the second display area 2 along the direction parallel to the first tangent 31Is the distance D between two adjacent sub-pixels 7 of the first display region 12N times of; a distance D between two adjacent sub-pixel columns of the second display region 23Is the distance D between two adjacent sub-pixel columns of the first display area 14N times. Set up like this and make the regional distribution of the printing opacity of second display area 2 even, the light that optical sensor obtained is more even, promotes optical sensor's light collection effect.
Optionally, fig. 6 is a schematic structural diagram of a display device according to an embodiment of the present invention. On the basis of the above embodiments, referring to fig. 6, a display device 200 according to an embodiment of the present invention includes the display panel 100 and the optical sensor 300 according to any of the above embodiments, and the optical sensor 300 is correspondingly disposed in the second display area 2.
Specifically, the optical sensor 300 may include a camera, a photosensitive element, an infrared sensing element, and the like, and the display device 200 provided in this embodiment includes the display panel 100 provided in any of the above embodiments, which has the beneficial effects of the display panel 100 provided in any of the above embodiments, and therefore, the description is omitted here.
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 changes, rearrangements 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 (10)
1. A display panel, comprising:
the display device comprises a first display area and a second display area which is arranged adjacent to the first display area; the pixel density of the first display area is greater than that of the second display area; the second display area comprises a plurality of first pixel units; the boundary of the second display area, which is adjacent to the first display area, is provided with an arc-shaped segment; wherein the arc-shaped segment comprises a starting point and an end point, and the extending directions of a first tangent of the arc-shaped segment at the starting point and a second tangent of the arc-shaped segment at the end point are intersected with each other;
the arc-shaped segment comprises a first sub arc-shaped segment and a second sub arc-shaped segment, one end point of the first sub arc-shaped segment is the starting point, and one end point of the second sub arc-shaped segment is the end point; each sub-arc segment comprises a plurality of steps, each step comprises a first edge parallel to the first tangent line and a second edge parallel to the second tangent line;
along a first direction in which the starting point points to the end point, the number of the first pixel units included in the first edge of the step of the first sub-arc-shaped segment is gradually reduced; and along a second direction in which the end point points to the starting point, the number of the first pixel units included in the second edge of the step of the second sub-arc-shaped segment is gradually reduced.
2. The display panel according to claim 1,
the first display area comprises a plurality of second pixel units;
a first length of the first pixel unit along a direction parallel to the first tangent line is M times a second length of the second pixel unit along the direction parallel to the first tangent line, and a third length of the first pixel unit along the direction parallel to the second tangent line is N times a fourth length of the second pixel unit along the direction parallel to the second tangent line; wherein M and N are both positive integers greater than or equal to 2.
3. The display panel according to claim 2,
along the first direction, the number of the first pixel units included by the first edge of the step of the first sub-arc-shaped section accords with an arithmetic progression;
along the second direction, the number of the first pixel units included by the second edge of the step of the second sub-arc-shaped segment accords with an arithmetic progression.
4. The display panel according to claim 2,
the number of the first pixel units included by the second edge of the step of each first sub-arc-shaped section is equal;
the number of the first pixel units included in the first edge of the step of each second sub-arc-shaped segment is equal.
5. The display panel according to claim 2,
the number of the first pixel units included by the second edge of the step of the first sub-arc-shaped section is equal to the number of the first pixel units included by the first edge of the step of the second sub-arc-shaped section.
6. The display panel according to claim 2,
the length of the first pixel unit and the second pixel unit parallel to the first tangent is smaller than the length of the first pixel unit and the second pixel unit parallel to the second tangent;
the number of the steps of the first sub arc-shaped section is larger than that of the steps of the second sub arc-shaped section.
7. The display panel of claim 2, wherein the arc segment further comprises:
a third sub-arc segment disposed between the first sub-arc segment and the second sub-arc segment;
the third sub-arc segment comprises a plurality of steps;
the number of the first pixel units included by the first edge of the step of the third sub arc-shaped segment is equal to the number of the first pixel units included by the second edge of the step of the third sub arc-shaped segment.
8. The display panel according to claim 2,
each of the first pixel unit and the second pixel unit comprises a first sub-pixel, a second sub-pixel and a third sub-pixel;
the first sub-pixel, the second sub-pixel and the third sub-pixel are sequentially arranged along a direction parallel to the first tangent line to form a sub-pixel column; in two adjacent sub-pixel columns, the geometric center of a third sub-pixel of one sub-pixel column is positioned between the geometric centers of the first sub-pixel and the second sub-pixel of the other sub-pixel column, which are adjacent to the third sub-pixel.
9. The display panel according to claim 8,
in a direction parallel to the first tangent line, the distance between two adjacent sub-pixels in the second display area is N times the distance between two adjacent sub-pixels in the first display area;
the distance between two adjacent sub-pixel columns in the second display area is N times the distance between two adjacent sub-pixel columns in the first display area.
10. A display device comprising the display panel according to any one of claims 1 to 9, and an optical sensor;
the optical sensor is arranged in the second display area.
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