CN107863374B

CN107863374B - OLED display panel and display device

Info

Publication number: CN107863374B
Application number: CN201711050367.4A
Authority: CN
Inventors: 杨轩
Original assignee: Wuhan Tianma Microelectronics Co Ltd
Current assignee: Wuhan Tianma Microelectronics Co Ltd
Priority date: 2017-10-31
Filing date: 2017-10-31
Publication date: 2020-10-30
Anticipated expiration: 2037-10-31
Also published as: CN107863374A

Abstract

The invention discloses an OLED display panel and a display device, which comprise a display area, a middle area and a non-display area, wherein a second display area in the display area is divided into two display sub-areas by the middle area. The first scanning line corresponding to the pixel in the display sub-area includes a first sub-line extending in the row direction, a second sub-line extending in the row direction, and a third sub-line; the first sub-line of the nth first scanning line is connected with the nth row of pixels, the second sub-line is connected with the (n +1) th row of pixels, and one end, close to the middle area, of the first sub-line is connected with the second sub-line through the third sub-line. The first scanning line is formed by connecting a first sub line, a second sub line and a third sub line in series, and two rows of pixels are connected on the first scanning line, so that the pixel Loading on the scanning line in the display sub area is close to the pixel Loading on the scanning line in the first display area, and the problem of uneven display is avoided.

Description

OLED display panel and display device

Technical Field

The invention relates to the technical field of display, in particular to an OLED display panel and a display device.

Background

With the development of display technology, the comprehensive screen has a larger screen occupation ratio and an ultra-narrow frame, and compared with a common display screen, the comprehensive screen can greatly improve the visual effect of a viewer, thereby receiving wide attention. At present, in a display device such as a mobile phone using a full-screen, in order to realize functions of self-photographing, video call, and fingerprint recognition, a front camera, a receiver, a fingerprint recognition area, or a physical key is generally disposed on a front surface of the display device.

In order to realize full-screen display, as shown in the schematic structural diagram of the display panel shown in fig. 1, an intermediate area 1 is provided in the display area of the display panel, and a front camera 10, a headphone 20, and the like are provided in the intermediate area 1. However, due to the arrangement of the middle area 1, the number of pixels in the row of the middle area 1 is less than the number of pixels in the row of pixels located below the middle area 1, so that the loads of the pixels in different rows are different, and display is not uniform.

Disclosure of Invention

The embodiment of the invention provides an OLED display panel and a display device, which are used for solving the problem of uneven display in the prior art.

The OLED display panel provided by the embodiment of the invention is provided with a display area, a middle area and a non-display area surrounding the display area and the middle area; the display area is provided with pixels arranged in a matrix and scanning lines corresponding to the pixels in each row; the non-display area is provided with first shift register units which are connected with the scanning lines in a one-to-one corresponding mode;

the display area comprises a first display area and a second display area; wherein the second display region comprises two display sub-regions spaced apart by the intermediate region and arranged in a row direction;

the scanning line corresponding to the pixels in the display sub-area is a first scanning line, the first scanning line comprises a first sub-line extending along the row direction, a second sub-line extending along the row direction, and a third sub-line which is located at one end, close to the middle area, of the first sub-line and extends along the column direction; the first sub-line of the nth first scanning line is connected with the pixels on the nth row, and the second sub-line of the nth first scanning line is connected with the pixels on the (n +1) th row; one end of the first sub-line, which is far away from the middle area, is connected with the corresponding first shift register unit, and one end of the first sub-line, which is close to the middle area, is connected with the second sub-line through the third sub-line;

n is any integer greater than 0 and less than or equal to N, where N is the number of rows of the pixels in the display sub-region.

Correspondingly, the embodiment of the invention also provides a display device which comprises the OLED display panel provided by the embodiment of the invention.

The invention has the following beneficial effects:

the OLED display panel and the display device provided by the embodiment of the invention comprise a display area, a middle area and a non-display area, wherein the second display area in the display area is divided into two display sub-areas by the middle area. The first scanning line corresponding to the pixels in the display sub-area comprises a first sub-line extending along the row direction, a second sub-line extending along the row direction and a third sub-line which is positioned at one end of the first sub-line close to the middle area and extends along the column direction; the first sub-line of the nth first scanning line is connected with the pixels of the nth row, and the second sub-line of the nth first scanning line is connected with the pixels of the (n +1) th row; one end of the first sub-line, which is far away from the middle area, is connected with the corresponding first shift register unit, and one end of the first sub-line, which is close to the middle area, is connected with the second sub-line through the third sub-line. The first scanning line is formed by connecting a first sub line, a second sub line and a third sub line in series, and two rows of pixels are connected on the first scanning line, so that the pixel Loading on the scanning line in the display sub area is close to the pixel Loading on the scanning line in the first display area, and the problem of uneven display is avoided.

Drawings

FIG. 1 is a schematic structural diagram of a conventional OLED display panel;

fig. 2 is a schematic circuit structure diagram of a pixel circuit according to an embodiment of the present invention;

FIG. 3 is an input timing diagram corresponding to the pixel circuit shown in FIG. 2;

FIG. 4 is a schematic structural diagram of a conventional OLED display panel;

fig. 5 is a schematic structural diagram of an OLED display panel according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a first scan line in an OLED display panel according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a display sub-region in an OLED display panel according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of another structure of a display sub-region in an OLED display panel according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a second scan line in the OLED display panel according to the embodiment of the invention;

fig. 10 is a schematic structural diagram of an OLED display panel according to an embodiment of the present invention;

FIG. 11 is a schematic cross-sectional view of an OLED display panel according to an embodiment of the present invention;

FIGS. 12a to 12d are schematic diagrams illustrating the middle region of an OLED display panel according to an embodiment of the present invention;

fig. 13 is a schematic partial structure diagram of an OLED display panel according to an embodiment of the present invention;

fig. 14 is a schematic partial structure view of an OLED display panel according to an embodiment of the invention;

fig. 15 is a schematic partial structure view of an OLED display panel according to an embodiment of the invention;

fig. 16 is a schematic structural diagram of a display device according to an embodiment of the present invention.

Detailed Description

Because the Organic light-emitting diode (OLED) display panel has the advantages of low working voltage, fast response speed, high light-emitting efficiency, wide viewing angle, wide working temperature and the like, the Organic light-emitting diode (OLED) display panel is beneficial to the lightness, thinness, low power consumption and curved surface design of a display device. In the OLED display panel, a pixel circuit is generally used to drive the OLED to emit light. The pixel circuit generally resets the gate of the driving transistor before writing data to the OLED, for example, the pixel circuit shown in fig. 2, and fig. 2 is a schematic circuit structure diagram of a pixel circuit according to an embodiment of the present invention; includes 5 switching transistors: M1-M5, 1 driving transistor M0 and 1 capacitor C. Fig. 2 shows a corresponding input timing chart, and fig. 3 shows an input timing chart corresponding to the pixel circuit shown in fig. 2. In the stage of T1, the first Scan line Scan1 controls the switching transistor M1 to be turned on, and Vref resets the driving transistor M0, and in the stage of T2, the second Scan line Scan2 controls the switching transistors M2 and M3 to be turned on, so that Data writing is realized.

In the conventional OLED display panel, as shown in fig. 4, fig. 4 is a second schematic structural diagram of the conventional OLED display panel, and the scan line scan (n) is connected to the pixel circuits in the n-th row of pixels and the pixel circuits in the n + 1-th row of pixels, so that Data is written into the n-th row of pixel circuits and Vref reset is performed on the n + 1-th row of pixel circuits at the same time. However, in the conventional OLED display panel, due to the existence of the middle area, the pixel load on the scan lines at both sides of the middle area is about half of the pixel load on the scan lines located below the middle area. Therefore, the capacitive loads of the pixels in different rows are different, and the problem of uneven display is caused.

In view of this, embodiments of the present invention provide an OLED display panel and a display device.

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The shapes and sizes of the various elements in the drawings are not to scale and are merely intended to illustrate the invention.

As shown in fig. 5, fig. 5 is a schematic structural diagram of an OLED display panel provided in an embodiment of the present invention, where the display panel includes a display area, a middle area B, and a non-display area C surrounding the display area and the middle area B; the display area is provided with pixels 01 arranged in a matrix and scanning lines scan (n) corresponding to the pixels 01 in each row; the non-display area C is provided with first shift register units VSR (n) which are correspondingly connected with the scanning lines scan (n) one by one;

the display areas include a first display area a1 and a second display area; wherein the second display region comprises two display sub-regions a20 spaced apart by a middle region B and arranged in a row direction;

scanning lines (scan (1) to scan (4) in fig. 5) corresponding to the pixels of a20 in the display sub-region are first scanning lines, as shown in fig. 6, fig. 6 is a schematic structural diagram of the first scanning lines in the OLED display panel according to the embodiment of the present invention, where fig. 6 is a schematic diagram of an nth first scanning line scan (n), the first scanning line scan (n) includes a first sub-line S1 extending in a row direction, a second sub-line S2 extending in the row direction, and a third sub-line S3 located at an end of the first sub-line S1 close to the middle region B and extending in a column direction; wherein, the first sub-line S1 of the nth first scan line scan (n) is connected with the pixels 01 of the nth row, and the second sub-line S2 of the nth first scan line scan (n) is connected with the pixels 01 of the (n +1) th row; one end of the first sub-line S1, which is far away from the middle area B, is connected with the corresponding first shift register unit VSR (n), and one end of the first sub-line S1, which is near to the middle area B, is connected with the second sub-line S2 through the third sub-line S3;

n is any integer greater than 0 and less than or equal to N, which is the number of rows of pixels 01 in the display sub-region a 20.

The OLED display panel provided by the embodiment of the invention comprises a display area, a middle area and a non-display area, wherein the second display area in the display area is divided into two display sub-areas by the middle area. The first scanning line corresponding to the pixels in the display sub-area comprises a first sub-line extending along the row direction, a second sub-line extending along the row direction and a third sub-line which is positioned at one end of the first sub-line close to the middle area and extends along the column direction; the first sub-line of the nth first scanning line is connected with the pixels of the nth row, and the second sub-line of the nth first scanning line is connected with the pixels of the (n +1) th row; one end of the first sub-line, which is far away from the middle area, is connected with the corresponding first shift register unit, and one end of the first sub-line, which is close to the middle area, is connected with the second sub-line through the third sub-line. The first scanning line is formed by connecting a first sub line, a second sub line and a third sub line in series, and two rows of pixels are connected on the first scanning line, so that the pixel Loading on the scanning line in the display sub area is close to the pixel Loading on the scanning line in the first display area, and the problem of uneven display is avoided.

It should be noted that, in the OLED display panel provided in the embodiment of the present invention, the pixels are light emitting diodes and pixel circuits for driving the light emitting diodes to emit light.

Specifically, in the OLED display panel provided in the embodiment of the present invention, the scan line corresponding to the nth row of pixels is a scan line for controlling data writing of the row of pixels and controlling resetting of the (n +1) th row of pixels. Therefore, in the display sub-area, the first sub-line of the nth first scan line is connected to the nth row of pixels for controlling data writing of the nth row of pixels, and the second sub-line is connected to the (n +1) th row of pixels for controlling the (n +1) th row of pixels to be reset. For the second sub-line in the first scanning line, which corresponds to the end of the first scanning line, the far-end delay effect delay is the largest, but since it is used for the reset control, the influence is not large.

Although the first scan line of the display sub-region is set to be the series connection structure of the first sub-line, the second sub-line and the third sub-line, when there is still a difference between the load of the first scan line in the display sub-region and the load on the scan line in the first display region, optionally, in the OLED display panel provided in the embodiment of the present invention, as shown in fig. 7 and 8, fig. 7 is one of the schematic structural diagrams of the display sub-region in the OLED display panel provided in the embodiment of the present invention, fig. 8 is a second schematic structural diagram of the display sub-region in the OLED display panel provided in the embodiment of the present invention, and the OLED display panel further includes a connection line Ln electrically connected to the first scan line scan (n);

the connection line Ln and other Scan lines adjacent to the first Scan line Scan (n) in the column direction, for example, Scan (n-1) and/or Scan (n +1), constitute a capacitive structure. Thereby utilizing the relationship between the upper and lower levels of a scan line to further compensate for the load of the first scan line within the display sub-area by increasing the load capacitance of the first scan line. Fig. 7 illustrates an example of a capacitor structure formed by the connection line Ln and the Scan line Scan (n +1), and fig. 8 illustrates an example of a capacitor structure formed by the connection line Ln and the Scan line Scan (n-1), which is not limited herein.

Alternatively, in the OLED display panel provided in the embodiment of the present invention, as shown in fig. 7, the Scan lines Scan (n) and the connecting lines Ln are both located on the substrate of the display panel, and the Scan lines Scan (n +1) and the connecting lines Ln that form the capacitor structure have an overlapping region in a direction perpendicular to the substrate.

Alternatively, in the OLED display panel provided in the embodiment of the invention, as shown in fig. 7, the second sub-line S2 in the first scan line scan (n) is electrically connected to the connection line Ln;

the connection line Ln and the first sub-line S2 in the Scan line Scan (n +1) adjacent to the first Scan line Scan (n) have an overlapping region in the direction perpendicular to the substrate.

Alternatively, in the OLED display panel provided in the embodiment of the invention, as shown in fig. 8, when the connection line Ln and the Scan line Scan (n-1) form a capacitance structure, the first sub-line S1 in the first Scan line Scan (n) is electrically connected to the connection line Ln; the connection line Ln and the second sub-line S2 in the Scan line Scan (n-1) adjacent to the first Scan line Scan (n) have an overlapping region in the direction perpendicular to the substrate.

Alternatively, in the OLED display panel provided in the embodiment of the invention, as shown in fig. 7 and 8, the first sub-line S1, the second sub-line S2, and the third sub-line S3 in the first scan line scan (n) are disposed in the same layer;

the connecting line Ln and the first scan line scan (n) are arranged in different layers.

Alternatively, in the OLED display panel provided in the embodiment of the invention, as shown in fig. 7 and 8, the connection line Ln and the first sub-line S1 are electrically connected through the via V1. Specifically, the first through hole may be implemented by one through hole, or may be implemented by a plurality of through holes, which is not limited herein.

Specifically, in the OLED display panel provided in the embodiment of the present invention, the connecting lines and the scan lines that form the capacitor structure have opposite areas that are determined according to the capacitive load that needs to be compensated of the corresponding first scan line, and the larger the capacitive load that needs to be compensated, the larger the opposite areas of the connecting lines and the scan lines are.

Specifically, the OLED display panel is generally provided therein with a data line metal layer, a scan line metal layer, and a capacitance line metal layer. Optionally, in the OLED display panel provided in the embodiment of the present invention, the connecting line and the capacitor line metal layer in the display panel are disposed in the same layer, so that the connecting line can be formed by changing the patterned pattern when the capacitor line metal layer is fabricated, and a Mask process for separately fabricating the connecting line can be omitted.

Optionally, in the OLED display panel provided in the embodiment of the present invention, all the first scan lines in the two display sub-regions are disposed in the same layer. Thus, the patterns can be formed simultaneously by one patterning process during manufacturing.

Optionally, in the OLED display panel provided in the embodiment of the present invention, the scan lines in the first display region are the same as those in the prior art, specifically, as shown in fig. 5, the scan lines corresponding to the pixels in the first display region a1 are second scan lines scan (m), as shown in fig. 9, fig. 9 is a schematic structural diagram of the second scan lines in the OLED display panel provided in the embodiment of the present invention, the second scan lines scan (m) include a fourth sub-line S4 extending along the row direction and a fifth sub-line S5 extending along the row direction, where the fourth sub-line S4 of the m-th second scan line scan (m) is connected to the m-th row pixel 01, the fifth sub-line S5 of the m-th second scan line scan (m) is connected to the m + 1-th row pixel, and one end of each of the fourth sub-line S4 and the fifth sub-line S5 is connected to the corresponding first shift register unit vsr (n);

m is any integer greater than 0 and less than or equal to M, which is the number of rows of pixels 01 in the first display area a 1.

Specifically, in the OLED display panel provided in the embodiment of the present invention, the fifth sub-line may be directly connected to the corresponding shift register unit, or as shown in fig. 9, the fourth sub-line S4 and the fifth sub-line S5 are connected in parallel through the sixth sub-line S6 and then connected to the corresponding shift register unit, which is not limited herein.

Optionally, in the OLED display panel provided in the embodiment of the present invention, the fourth sub line and the fifth sub line in the second scan line are disposed in the same layer, so that they can be formed simultaneously through a single patterning process during manufacturing.

Optionally, in the OLED display panel provided in the embodiment of the present invention, the second scan lines are disposed in the same layer, so that the second scan lines can be formed simultaneously through a single patterning process during manufacturing.

Optionally, in the OLED display panel provided in the embodiment of the present invention, the second scan line and the first scan line are disposed in the same layer, so that they can be formed simultaneously by a single patterning process during manufacturing.

For the OLED display panel with large size and high resolution, the number of pixels in each row of pixels is large, so the design of bilateral driving is generally adopted, i.e. both ends of the scan line are connected to the shift register unit.

Optionally, as shown in fig. 10, fig. 10 is a second schematic structural diagram of the OLED display panel provided in the embodiment of the present invention, third shift register units VSR '(m) connected to the second scan lines scan (m) in a one-to-one correspondence are further disposed in the non-display area C, and the other ends of the fourth sub-line S4 and the fifth sub-line S5 are connected to the corresponding third shift register units VSR' (m).

The output timings of the first shift register unit VSR (m) and the third shift register unit VSR' (m) connected to the same second scan line scan (m) are the same.

Optionally, in the OLED display panel provided in the embodiment of the present invention, as shown in fig. 10, second shift register units VSR '(n) connected to the second sub-lines S2 in each first scan line scan (n) in a one-to-one correspondence manner are further disposed in the non-display area C, and the second shift register units VSR' (n) are connected to one end of the second sub-line S2, which is far away from the middle area B;

the output timings of the first shift register unit VSR (n) and the second shift register unit VSR' (n) connected to the same first scan line scan (n) are the same. That is, the first scan line scan (n) is respectively connected to two shift register units with the same output timing, that is, the display sub-region a20 is also designed to adopt the dual-edge driving design to match the dual-edge driving design of the first display region a 1. The design of adopting bilateral drive can also prevent when the scanning line and one of them shift register unit break circuit, another shift register unit still can provide the signal to the scanning line to guarantee that the display panel still can normally show, increase display panel's life.

Optionally, in the OLED display panel provided in the embodiment of the present invention, as shown in fig. 13, the non-display area C is further provided with second shift register units VSR '(n) connected to the connection lines Ln in a one-to-one correspondence manner, and the second shift register units VSR' (n) are connected to one end of the connection line Ln, which is far away from the middle area B;

the output timings of the first shift register unit VSR (n) and the second shift register unit VSR' (n) connected to the same first scan line scan (n) are the same. That is, the bilateral driving of the first scan line scan (n) is realized through the connection line Ln.

Alternatively, in the OLED display panel according to the embodiment of the invention, as shown in fig. 14, in the first scan line scan (n), the first sub line S1 and the second sub line S2 are both connected to the first shift register unit vsr (n), and the connection line Ln is connected to the first scan line scan (n) through the third sub line S3.

Alternatively, in the OLED display panel provided by the embodiment of the invention, as shown in fig. 14, the connection line Ln has an overlapping region with only the first sub-line S1 in the adjacent first Scan line Scan (n + 1). Of course, in order to further increase the capacitance compensation, as shown in fig. 15, the connection line Ln may have an overlapping region with both the first sub-line S1 and the second sub-line S2 in the adjacent first Scan line Scan (n + 1). At this time, one end of the third sub-wire S3 is connected to the first sub-wire S1, and the other end is connected to the second sub-wire S2 via a connecting wire Ln.

Specifically, the OLED display panel provided in the embodiment of the present invention, as shown in fig. 11, includes a substrate 10, a pixel circuit (only the driving transistor M0 is shown in the figure) located on the substrate 10, a light emitting diode 11 connected to the driving transistor M0, and an encapsulation layer 13 for performing an encapsulation function. The light emitting diode 11 generally includes an anode 111, an organic light emitting layer 112, and a cathode 113.

In the OLED display panel provided in the embodiments of the present invention, the substrate may be a glass substrate, a flexible substrate, a silicon substrate, and the like, which is not limited herein. When the display panel is applied to a display device, devices such as a camera and a headphone are generally arranged, so in order to arrange the devices such as the camera and the headphone, in a specific implementation, in the display panel provided in an embodiment of the present invention, the middle area is a hollow area of the substrate in the display panel. In the actual manufacturing process, the middle area of the substrate is cut off to form a hollow area, so that a camera, an earphone and other devices can be arranged in the display device. Of course, the middle area may not be cut, but is used as a protective cover plate for devices such as a camera and an earphone, and in this case, the middle area may be set as a non-hollowed-out area. In order to make these devices work normally, the non-hollow-out area can be set as a transparent display area or a non-display area. Of course, the specific setting of the middle area of the display panel needs to be set according to the actual application environment of the display panel, and is not limited herein.

In practical implementation, in the OLED display panel provided in the embodiment of the present invention, the outline of the middle region may be set according to the shape of the device to be disposed in the middle region, for example, when a plurality of devices are disposed in the middle region B, as shown in fig. 12a, the outline of the middle region B may be a rectangular region. Alternatively, when the edge profile of the device disposed in the middle region B is irregular, as shown in fig. 12B and 12c, the profile of the middle region B may be non-rectangular in shape.

For example, when the edge profile of the device disposed in the middle region is a circular arc, for example, a circular camera, two sides of the middle region respectively adjacent to the display sub-regions may be respectively disposed in an arc shape to form the middle region with a special-shaped profile.

Alternatively, as shown in fig. 12B, only two right angles of the rectangular region near the second region may be respectively set to be arc-shaped to form the middle region B of the special-shaped profile. Alternatively, as shown in fig. 12c, four right angles of the rectangular area may be respectively set to be arc-shaped to form the middle area B of the odd-shaped profile. Alternatively, as shown in fig. 12d, the shaped area may be set to be trapezoidal to form the middle area B. Of course, the special-shaped profile may be provided as a circular arc to form a middle area of the circular arc profile. In practical applications, the outline of the middle area needs to be designed and determined according to the practical application environment of the display panel, and is not limited herein.

Based on the same inventive concept, an embodiment of the present invention further provides a display device, as shown in fig. 16, the display device may include: the embodiment of the invention provides any one of the display panels. The principle of the display device to solve the problem is similar to the display panel, so the implementation of the display device can be referred to the implementation of the display panel, and repeated details are not repeated herein.

In a specific implementation manner, in the display device provided in the embodiment of the present invention, the display device may further include: one or a combination of a camera, an earpiece, a light sensor, a distance sensor, an iris recognition sensor, and a fingerprint recognition sensor.

In practical implementation, as shown in fig. 16 (fig. 16 only includes a camera, an earpiece, a light sensor, a fingerprint sensor, and a distance sensor for example), the display device provided in the embodiment of the present invention includes: the camera 110, the earpiece 120, the light sensor 130, the distance sensor 140 and the fingerprint recognition sensor 150 are located in the middle area B, and the orthographic projections of the display panels of the camera 110, the earpiece 120, the light sensor 130, the distance sensor 140 and the fingerprint recognition sensor 150 are located in the middle area B. Moreover, the middle area B is generally set as a hollow area to avoid affecting the operation performance of the camera 110, the receiver 120, the light sensor 130, the distance sensor 140, and the fingerprint sensor 150.

In practical implementation, the display device provided in the embodiment of the present invention may be a mobile phone as shown in fig. 16. Of course, the display device provided in the embodiment of the present invention may also be any product or component having a display function, such as a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator. Other essential components of the display device are understood by those skilled in the art, and are not described herein or should not be construed as limiting the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. An OLED display panel having a display area, a middle area, and a non-display area surrounding the display area and the middle area; the display area is provided with pixels arranged in a matrix and scanning lines corresponding to the pixels in each row; the non-display area is provided with first shift register units which are connected with the scanning lines in a one-to-one corresponding mode;

2. The OLED display panel of claim 1, further comprising a connection line electrically connected to the first scan line;

the connecting line and other scanning lines adjacent to the first scanning line along the column direction form a capacitor structure.

3. The OLED display panel according to claim 2, wherein all of the scan lines and the connection lines are located on a substrate of the display panel, and there is an overlapping area of the scan lines and the connection lines constituting the capacitive structure in a direction perpendicular to the substrate.

4. The OLED display panel of claim 3, wherein the second sub-line of the first scan line is electrically connected to the connection line;

the connecting line and the first sub-line in the scanning line adjacent to the first scanning line have an overlapping region in a direction perpendicular to the substrate.

5. The OLED display panel of claim 3, wherein the first, second, and third sub-lines in the first scan line are disposed in a same layer;

the connecting lines and the first scanning lines are arranged in different layers.

6. The OLED display panel of claim 5, wherein all of the first scan lines in two of the display sub-regions are disposed in a same layer.

7. The OLED display panel of claim 1, wherein the scan line corresponding to the pixel in the first display region is a second scan line including a fourth sub-line extending in a row direction and a fifth sub-line extending in the row direction, wherein the fourth sub-line of an mth scan line is connected to the mth row pixel, the fifth sub-line of the mth scan line is connected to the m +1 th row pixel, and one end of each of the fourth and fifth sub-lines is connected to the corresponding first shift register unit;

m is any integer greater than 0 and less than or equal to M, where M is the number of rows of the pixels in the first display region.

8. The OLED display panel of claim 7, wherein the fourth and fifth sub lines in the second scan line are disposed in a same layer.

9. The OLED display panel of claim 8, wherein each of the second scan lines is disposed in a same layer.

10. The OLED display panel of claim 9, wherein the second scan line is disposed in a same layer as the first scan line.

11. The OLED display panel according to any one of claims 1 to 10, wherein a second shift register unit connected to a second sub line of each of the first scan lines in a one-to-one correspondence is further disposed in the non-display area, and the second shift register unit is connected to an end of the second sub line away from the middle area;

the output time sequences of the first shift register unit and the second shift register unit connected with the same first scanning line are the same.

12. The OLED display panel of claim 2, wherein the non-display area is further provided with second shift register units connected with the connecting lines in a one-to-one correspondence manner, and the second shift register units are connected with one ends of the connecting lines far away from the middle area;

13. The OLED display panel according to any one of claims 8 to 10, wherein third shift register units connected to the second scan lines in a one-to-one correspondence are further disposed in the non-display region, and the other ends of the fourth sub-line and the fifth sub-line are connected to the corresponding third shift register units;

and the output time sequences of the first shift register unit and the third shift register unit which are connected with the same second scanning line are the same.

14. The OLED display panel of any one of claims 1-10, wherein the outline of the middle region is a rectangular region; or the contour of the middle area is a special-shaped area.

15. A display device, comprising: the OLED display panel of any one of claims 1-14.

16. The display device of claim 15, further comprising one or a combination of a camera, an earpiece, a light sensor, a distance sensor, an iris recognition sensor, and a fingerprint recognition sensor disposed in the middle region of the OLED display panel.