CN113724611A

CN113724611A - Display panel

Info

Publication number: CN113724611A
Application number: CN202111004702.3A
Authority: CN
Inventors: 王芳
Original assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Current assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2021-11-30
Anticipated expiration: 2041-08-30
Also published as: CN113724611B

Abstract

The invention provides a display panel. The display panel includes: a plurality of first subpixels displaying a first color, arranged in a first row along a first direction; a plurality of second subpixels displaying a second color, arranged in a second row along the first direction; a plurality of third subpixels displaying a third color, disposed in the second row along the first direction; a plurality of spare first sub-pixels displaying a first color, arranged in a third row along the first direction; the spare first sub-pixel is driven in a time-sharing manner with the adjacent first sub-pixel. The invention prolongs the service life of the display panel and avoids the problem of service life shortening caused by poor display effect when each repeated pixel unit only comprises one blue sub-pixel. And the adjacent light-emitting layers of the sub-pixels displaying the same color are connected and simultaneously prepared on the anode layer, so that the MASK opening difficulty can be reduced, the process difficulty can be reduced, the preparation steps can be simplified, the preparation cost can be saved, and the preparation efficiency can be improved.

Description

Display panel

Technical Field

The invention relates to the field of display, in particular to a display panel.

Background

The twenty-first century is called a brand-new electronic information age, the demand of people for information is getting larger and larger due to the development of networks, and smart phones, watches and tablet computers become an essential part of the life of people. The development of display technology is greatly promoted by the arrival of the information age, and people pursue a large-size flexible display which is lighter, thinner and energy-saving, so that organic electroluminescence becomes the mainstream of the market.

For medium and large-sized products such as notebook computers, tablet computers, vehicle-mounted products, televisions and the like, the requirements on the service life are higher, the challenges on OLED panels are greater, and especially blue light devices with shorter service lives are provided.

At present, each pixel unit in the existing organic light-emitting pixel structure only comprises one blue sub-pixel, so that the brightness of the blue sub-pixel is attenuated to 70% -80% of the initial brightness after long-term use, and at the moment, the display effect is poor, and the service life is shortened. In addition, each sub-pixel of the organic light-emitting pixel structure of the existing display panel is manufactured respectively, so that the cost is high and the manufacturing efficiency is low.

Disclosure of Invention

The present invention provides a display panel, so as to solve the technical problems that the luminance of a blue sub-pixel is attenuated to 70% -80% of the initial luminance after long-term use due to the fact that each pixel unit of the existing organic light-emitting pixel structure only includes one blue sub-pixel, and the display effect is poor, which affects the shortening of the service life, and solve the technical problems that each sub-pixel of the existing organic light-emitting pixel structure of the existing display panel is manufactured separately, the cost is high, and the manufacturing efficiency is low.

In order to solve the above problems, the present invention provides a display panel including: a plurality of first subpixels displaying a first color, arranged in a first row along a first direction; a plurality of second subpixels displaying a second color, arranged in a second row along the first direction; a plurality of third subpixels displaying a third color, disposed in the second row along the first direction; a plurality of spare first sub-pixels displaying a first color, arranged in a third row along the first direction; wherein the spare first sub-pixel is driven in a time-sharing manner with the adjacent first sub-pixel.

Further, the light emitting layer of the first sub-pixel is connected with the light emitting layer of the adjacent spare first sub-pixel.

Further, in the second row, the second sub-pixels and the third sub-pixels are alternately arranged at intervals.

Furthermore, in the second row, support pillars are further disposed between the second sub-pixels and the third sub-pixels, and the second sub-pixels, the third sub-pixels, the support pillars, the second sub-pixels, the third sub-pixels, and the support pillars are arranged alternately at intervals.

Further, the support post is located between the first sub-pixel and the spare first sub-pixel; or the second sub-pixel and the third sub-pixel are both located between the first sub-pixel and the spare first sub-pixel.

Further, in the second row, the second sub-pixels, the third sub-pixels, the second sub-pixels, the third sub-pixels, and the third sub-pixels are alternately arranged at intervals in an arrangement manner.

Furthermore, in the second row, a support column is further arranged between two adjacent second sub-pixels, and a support column is further arranged between two adjacent third sub-pixels; the second sub-pixel and the third sub-pixel are both located between the first sub-pixel and the spare first sub-pixel.

Further, the light emitting layers of two adjacent second sub-pixels are connected; the light emitting layers of two adjacent third sub-pixels are connected.

Furthermore, in the second row, a support column is further disposed between the second sub-pixel and the third sub-pixel, and the support column is located between the first sub-pixel and the spare first sub-pixel.

Further, the display panel further comprises a data driving unit for providing a plurality of data signals to the first sub-pixel, the spare first sub-pixel, the second sub-pixel and the third sub-pixel; the data driving unit first drives the first sub-pixel, and when the luminance of the first sub-pixel is attenuated to 70-80% of the initial luminance, the data driving unit is changed to drive the spare first sub-pixel.

The invention has the technical effects that each pixel unit comprises a first sub-pixel (blue sub-pixel) and a standby first sub-pixel, when the organic light-emitting pixel structure is driven, when the brightness of the driven first sub-pixel is attenuated to 70% -80% of the initial brightness, the standby first sub-pixel is started to replace the brightness attenuated first sub-pixel, so that the service life compensation effect is achieved, the service life of the display panel is prolonged, and the problem of service life shortening caused by poor display effect when each pixel unit only comprises one blue sub-pixel is solved. And the adjacent sub-pixels displaying the same color are arranged, so that the light-emitting layers can be manufactured at the same time, the preparation steps are simplified, the preparation cost is saved, and the preparation efficiency is improved.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

Fig. 1 is a schematic view of a partial planar structure of a pixel of a display panel according to embodiment 1 of the present invention;

FIG. 2 is a sectional view at A-A of FIG. 1 in embodiment 1 of the present invention;

fig. 3 is a schematic plan view illustrating a corresponding connection between a data line and a third sub-pixel in embodiment 1 of the present invention;

fig. 4 is a schematic view of a partial planar structure of a pixel of a display panel according to embodiment 2 of the present invention;

fig. 5 is a schematic view of a partial planar structure of a pixel of a display panel according to embodiment 3 of the present invention;

fig. 6 is a schematic view of a partial planar structure of a pixel of a display panel according to embodiment 4 of the present invention;

FIG. 7a is a block diagram illustrating a driving method of a display panel according to an embodiment of the present invention;

FIG. 7b is a block diagram illustrating another driving method of a display panel according to an embodiment of the present invention.

The parts in the figures are numbered as follows:

red sub-pixel 1, green sub-pixel 2, blue sub-pixel 3,

a first row 11, a second row 12, a third row 13,

an organic light emitting pixel structure 10, an array substrate 20, a first sub-pixel row 21,

the second subpixel row 22, the third subpixel row 23, the active layer 31,

a first gate insulation layer 32, a first metal layer 33, a second gate insulation layer 34,

a second metal layer 35, a planarization layer 36, a source drain layer 37,

a data driving unit 40, a memory component 41, a counting component 42,

odd lines 51, even lines 52, display panel 100,

an anode layer 101, a pixel defining layer 102, a light emitting layer 103,

cathode layer 104, support posts 105, pixel cells 110,

data line 120, recess 121, substrate layer 201,

a driving circuit layer 202, an interlayer insulating layer 203, a line changing layer 204,

steps S10-S31.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all 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 application.

The following description of the various embodiments refers to the accompanying drawings that illustrate specific embodiments in which the invention may be practiced. Directional phrases used in connection with the present invention, such as, for example, rows, columns, etc., are used in the directional sense only with reference to the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.

Example 1

Referring to fig. 1 to 3, an embodiment of the invention provides a display panel 100, including: an array substrate 20; a plurality of pixel units 110 are disposed on the array substrate 20; and a data driving unit 40. The data driving unit 40 is disposed on the array substrate 20 and configured to provide a plurality of data signals to the plurality of pixel units 110. Each of the pixel units 110 includes a red sub-pixel 1, a green sub-pixel 2, and two blue sub-pixels 3. For simplicity, R, G, B is used in the drawings of the present application to denote red sub-pixel 1, green sub-pixel 2, and blue sub-pixel 3, respectively. The data driving unit 40 is configured to drive the red sub-pixel 1, the green sub-pixel 2, and one of the blue sub-pixels 3 for image display, and drive the red sub-pixel 1, the green sub-pixel 2, and the other of the blue sub-pixels 3 for image display after a predetermined number of image frames. This enables one of the blue sub-pixels 3 to be driven at the earliest and the other blue sub-pixel 3 to be standby, so that one blue sub-pixel 3 and one standby blue sub-pixel 3 are included in one pixel unit 110, and the service life of the display panel 100 is prolonged in a time-sharing driving manner.

Specifically, the structure of the pixel unit 110 is shown in fig. 1, and fig. 1 is a schematic view of a partial planar structure of a pixel of the display panel 100; the pixel units 110 are arranged in a plurality of rows and a plurality of columns in an array, which is referred to as a row in the column direction, each pixel unit 110 defines a first row 11, a second row 12 and a third row 13 that are sequentially arranged, the first row 11 and the third row 13 respectively include one blue sub-pixel 3, the blue sub-pixel 3 in the third row 13 is used as a spare blue sub-pixel 3, the second row 12 includes one red sub-pixel 1 and one green sub-pixel 2 that are alternately arranged at intervals, and the arrangement mode of the first row 11 is the same as that of the third row 13. Wherein, since two of the blue sub-pixels 3 are respectively disposed at two opposite ends of the pixel units 110, any one of the blue sub-pixels 3 in one of the pixel units 110 is disposed adjacent to and in parallel with the blue sub-pixel 3 in another adjacent one of the pixel units 110. In this embodiment, the blue sub-pixel 3 is a first sub-pixel displaying a first color, the green sub-pixel 2 is a second sub-pixel displaying a second color, and the red sub-pixel 1 is a third sub-pixel displaying a third color.

Referring to fig. 1 and 2, an embodiment of the invention provides a display panel 100, which is an organic light emitting display panel, including an organic light emitting pixel structure 10, where the organic light emitting pixel structure 10 is disposed on an array substrate 20. The array substrate 20 comprises a substrate layer 201, a driving circuit layer 202, an interlayer insulating layer 203 and a wire changing layer 204; the driving circuit layer 202 is provided with a source drain layer 37, and is arranged on the substrate layer 201; the interlayer insulating layer 203 is arranged on the driving circuit layer 202; the wiring layer 204 is disposed on the interlayer insulating layer 203 and electrically connected to the source/drain layer 37. Specifically, the driving circuit layer 202 includes an active layer 31, a first gate insulating layer 32, a first metal layer 33, a second gate insulating layer 34, a second metal layer 35, a planarization layer 36, and the source/drain layer 37, which are sequentially stacked from bottom to top, where the first metal layer 33 is provided with a gate, and the second metal layer 35 is disposed corresponding to the gate to form a capacitor structure. The interlayer insulating layer 203 may include a plurality of layers, and in this case, the corresponding wire changing layer 204 may also include a plurality of layers, so that a wire changing structure including a plurality of wire changing layers 204 may be disposed in the interlayer insulating layer 203.

Referring to fig. 2, the organic light emitting pixel structure 10 includes an anode layer 101, a pixel defining layer 102, a light emitting layer 103, and a cathode layer 104. The anode layer 101 is disposed on the wire changing layer 204, the pixel defining layer 102 is disposed on the anode layer 101, the pixel defining layer 102 includes a plurality of grooves 121, the anode layer 101 is disposed in the grooves 121, and the light emitting layer 103 is disposed in the grooves 121; each sub-pixel of the pixel unit 110 comprises the light emitting layer 103 disposed in the groove 121; the cathode layer 104 covers the light emitting layer 103 and the pixel defining layer 102.

With reference to fig. 2, when the organic light emitting diode is used as the display panel of the sub-pixels, the blue sub-pixel 3 and the spare blue sub-pixel 3 in the two adjacent pixel units 110 are disposed adjacently, and at this time, the light emitting layer of the first sub-pixel is disposed to be connected to the light emitting layer of the adjacent spare first sub-pixel, so that the two adjacent blue sub-pixels 3 can be simultaneously prepared, and the preparation efficiency is improved. Because they are prepared by the same MASK opening, the light emitting layer covers the two anode layers 101 of the MASK opening from the structural point of view, so the MASK opening difficulty can be reduced, the process difficulty can be reduced, the preparation steps can be simplified, the preparation cost can be saved, and the preparation efficiency can be improved.

As described above, if the light emitting diode or the micro light emitting diode is selected as the sub-pixel, the display panel can set the blue sub-pixel 3 as the green light emitting diode. The red sub-pixel 1 is a red led, and the green sub-pixel 2 is a blue led. In a similar manner to that shown in figure 1.

If other types of electroluminescent devices are used as the sub-pixels, the electroluminescent device with the fastest brightness decay among the electroluminescent devices can be used as the first sub-pixel according to the description of the embodiment, and the same effect can be achieved by applying the architecture and method of the embodiment.

Because the first row 11 and the third row 13 in each pixel unit 110 both include one blue sub-pixel 3, it can be realized that each pixel unit includes two blue sub-pixels 3, one blue sub-pixel 3 is in standby, when the organic light emitting pixel is driven, one of the two blue sub-pixels 3 is driven, and when the brightness of the driven blue sub-pixel 3 is attenuated to 70% -80% of the initial brightness, the standby blue sub-pixel 3 is started to replace the blue sub-pixel 3 with attenuated brightness, so as to achieve the brightness compensation effect, prolong the service life of the display panel 100, and avoid the problem of display effect deterioration caused by different degrees of brightness attenuation of the sub-pixels.

In this embodiment, the blue sub-pixels 3 in the first row 11 and the third row 13 are longitudinally arranged, and the red sub-pixels 1 and the green sub-pixels 2 in the second row 12 are both transversely arranged.

In this embodiment, each of the pixel units 110 defines a first sub-pixel row 21, a second sub-pixel row 22 and a third sub-pixel row 23 arranged in sequence, where the first sub-pixel row 21 includes one red sub-pixel 1, the second sub-pixel row 22 includes two blue sub-pixels 3, and the third sub-pixel row 23 includes one green sub-pixel 2.

In this embodiment, the pixel defining layer 102 is further provided with a supporting Pillar (PS)105, and each pixel unit 110 is provided with one supporting pillar 105; the supporting column 105 is disposed between the two blue sub-pixels 3 in the second sub-pixel row 22, and the supporting column 105 is disposed between the red sub-pixel 1 and the green sub-pixel 2 in the second row 12. And the arrangement modes of G, R, PS, G, R and PS are alternately arranged, namely the arrangement modes of the second sub-pixels, the third sub-pixels, the support columns, the second sub-pixels, the third sub-pixels and the support columns are alternately arranged.

Referring to fig. 3, after the pixel unit 110 is driven for a period of time, when the brightness of the earliest driven blue sub-pixel 3 decays to 70% -80% of the initial brightness, the brightness of the red sub-pixel 1 and the green sub-pixel 2 do not decay significantly. This causes a significant color shift when the display panel 100 displays an image, which deteriorates the display effect. In order to compensate for the display degradation, the data driving unit 40 includes a memory component 41 for recording the default video frame number and a counting component 42 for accumulating the displayed video frame number. The default image frame number is obtained in advance by an experiment or the like, and is a cumulative display image frame number when the maximum luminance of the blue sub-pixel 3 declines to 70% or less of the standard (normal) luminance of the factory shipment of the blue sub-pixel 3. The accumulated display image frame number at this time is used as the default image frame number and recorded in the memory component 41.

After the display panel 100 leaves the factory, the counting component 42 of the data driving unit 40 starts to obtain the cumulative number of displayed image frames for driving the blue sub-pixel 3 by cumulatively displaying the number of displayed image frames, and then compares the cumulative number of displayed image frames with the default number of image frames recorded in the memory component 41 of the data driving unit 40, and drives the standby blue sub-pixel 3 to display an image after the cumulative number of displayed image frames is greater than the default number of image frames, so as to replace the blue sub-pixel 3 with attenuated brightness, thereby achieving the effect of brightness compensation, prolonging the service life of the display panel 100, and avoiding the problem of display effect deterioration caused by different degrees of brightness attenuation of the sub-pixels.

Furthermore, when the luminance of the spare blue sub-pixel 3 decays to 70% -80% of the original luminance, the blue sub-pixel 3 which is driven earliest is driven again to display the image or the blue sub-pixel 3 which is driven earliest and the spare blue sub-pixel 3 are driven simultaneously to display the image, so that the influence of the luminance decay of the blue sub-pixel 3 on the display effect of the display panel 100 is compensated.

Specifically, the blue sub-pixel 3 driven earliest is in the inactive state when the display panel 100 drives the spare blue sub-pixel 3 to display the image, and the brightness degradation can be recovered to a certain degree. Although not reaching the original factory standard brightness, it is better than the spare blue sub-pixel 3 whose brightness has decayed to 70% -80% of the original brightness. Therefore, instead of driving the earliest blue sub-pixel 3, the display panel 100 can partially compensate for the spare blue sub-pixel 3 whose brightness has decayed to 70% -80% of the original brightness.

Specifically, the earliest driving blue sub-pixel 3 and the standby blue sub-pixel 3 are driven simultaneously to display images, so as to compensate for the influence of the luminance attenuation of the blue sub-pixel 3 on the display effect of the display panel 100, and obtain a better compensation effect, but have a greater influence on the lifetime of the blue sub-pixel 3. The counting component 42 of the data driving unit 40 obtains the cumulative number of the displayed image frames for driving the spare blue sub-pixel 3 by cumulatively displaying the number of the image frames, and indicates that the brightness of the spare blue sub-pixel 3 has decayed to 70% -80% of the initial brightness after the cumulative number of the displayed image frames is greater than 2 times the default number of the image frames. At this time, the earliest driving blue sub-pixel 3 and the spare blue sub-pixel 3 are driven simultaneously to display images, so as to compensate for the brightness attenuation of the blue sub-pixel 3.

Embodiments of the present invention provide a display panel 100, which may be an Organic Light Emitting Diode (OLED) display panel, a micro LED display panel, or other display panels. Since the display panel needs to use electroluminescent devices of different materials as sub-pixels in order to emit different light. Electroluminescent devices of different colors will also typically have different life time and brightness decay curves. The display panel usually uses red, blue and green sub-pixels. Electroluminescent devices of the three colors red, blue, green will also typically have different life time and brightness decay curves. Therefore, the short-lived and fast-decaying electroluminescent device may cause color shift in the overall color display of the display panel, resulting in deterioration of display quality. Embodiments of the present invention may slow this degradation. For the light emitting diode, the brightness of the green light emitting diode is the lowest and the lifetime is the shortest, so that the third sub-pixel can be set as the green light emitting diode by using the light emitting diode or the micro light emitting diode as the display panel of the sub-pixel.

The display panel using the organic light emitting diode as the sub-pixel selects the blue sub-pixel 3 as the blue sub-pixel, because the luminance attenuation of the blue sub-pixel is most obvious, the problem of image display color deviation caused by the luminance attenuation of the blue sub-pixel can be mainly solved.

In the display panel 100 provided in the embodiment of the present invention, since the pixel unit 110 has two blue sub-pixels 3 that are turned on at different times, it is possible that the sub-pixels of different color lights of the display panel are distributed unevenly due to different lighting positions of the blue sub-pixels 3, so that the light mixing is uneven, and the display effect is degraded. In the embodiment of the present invention, the blue sub-pixel 3 of the display panel 100 is preferably two adjacent blue sub-pixels 3, such as: two of the blue sub-pixels 3 in one of the pixel units 110 are adjacently arranged in parallel, or two of the blue sub-pixels 3 are respectively disposed at two opposite ends of the pixel unit 110, but any one of the blue sub-pixels 3 in one of the pixel units 110 is adjacently arranged in parallel with the blue sub-pixel 3 in another adjacent pixel unit 110. In the above two sub-pixel arrangement modes, because only one of the two adjacent parallel blue sub-pixels 3 is lit at the same time, the two sub-pixels are close to each other, and the obvious difference of the sub-pixel distribution positions of different colors caused by the different lighting positions of the blue sub-pixels 3 is avoided.

Referring to fig. 7a, based on the display panel 100 described above, the present embodiment further provides a driving method of a display panel, including the steps of:

s10: the data driving unit converts the image of each frame into a data signal, provides the data signal to the pixel unit and accumulates the number of the displayed image frames, wherein the data driving unit drives the first sub-pixel, the second sub-pixel and one of the third sub-pixels to display the image; and

s20: and when the number of the displayed image frames is greater than a default image frame number, the data driving unit drives the first sub-pixel, the second sub-pixel and another third sub-pixel to display images, wherein the default image frame number corresponds to an accumulated display image frame number when the highest brightness of the third sub-pixel is reduced to less than 70 percent of the standard (normal) brightness of the third sub-pixel when leaving a factory.

It can be understood that, further, the driving method of the display panel further includes:

and S30, when the number of the displayed image frames is greater than 2 times of the default image frame number, the data driving unit drives the first sub-pixel, the second sub-pixel and the two third sub-pixels to display the image. Thus, when the brightness of the standby blue sub-pixel 3 decays to 70% -80% of the initial brightness, the counting component 42 of the data driving unit 40 accumulates the number of displayed image frames and compares the number of the default image frames recorded by the memory component 41 of the data driving unit 40, and after 2 times of the number of the default image frames, simultaneously drives the earliest driven blue sub-pixel 3 and the standby blue sub-pixel 3 to display images, thereby compensating the influence of the brightness decay of the blue sub-pixel 3 on the display effect of the display panel 100.

Referring to fig. 7b, in addition to step S30, the driving method of the display panel may also be replaced by the following steps:

s31: when the number of the displayed image frames is greater than 2 times the number of the default image frames, the data driving unit drives the earliest driven blue sub-pixel 3, the red sub-pixel 1 and the green sub-pixel 2 again to display the image, so as to compensate for the influence of the brightness attenuation of the blue sub-pixel 3 on the display effect of the display panel 100.

The degree of the luminance compensation in step S31 is slightly lower than the compensation effect in step S31, but the effect in step S31 is better for the lifetime of the blue sub-pixel 3.

Example 2

Referring to fig. 4, most of the technical features of embodiment 1 are included in embodiment 2, and the differences are that in the pixel structure of embodiment 2, a plurality of pixel units 110 'are arranged to form an odd-numbered row 51, a plurality of pixel units 110 are arranged to form an even-numbered row 52, and the pixel units 110' in the odd-numbered row 51 and the pixel units 110 in the even-numbered row 52 are symmetrically arranged.

In the second row, the second sub-pixels (G), the third sub-pixels (R), the third sub-pixels (G), the second sub-pixels (R), the third sub-pixels (G), the third sub-pixels (R) and the third sub-pixels (R) are alternately arranged at intervals. Preferably, the light emitting layers of two adjacent second sub-pixels are connected; the light emitting layers of two adjacent third sub-pixels are connected. Therefore, the adjacent sub-pixels with the same color are prepared by adopting the same MASK opening, and structurally, the light emitting layers cover the two anode layers 101 of the same, so that the MASK opening difficulty can be reduced, the process difficulty can be reduced, the preparation steps can be simplified, the preparation cost can be saved, and the preparation efficiency can be improved.

In the second row, a support column (PS) is further disposed between the second sub-pixel and the third sub-pixel, and the support column is located between the first sub-pixel and the spare first sub-pixel. Therefore, the second column adopts the arrangement mode that the R, PS, G, PS, R and R are alternately arranged at intervals.

Example 3

Referring to fig. 5, most of the technical features of embodiment 1 are included in embodiment 3, except that in the pixel structure of embodiment 3, each of the pixel units 110 defines a first sub-pixel row 21 and a second sub-pixel row 22 arranged in sequence, instead of the third sub-pixel row 23 in embodiment 1.

Referring to fig. 5, in embodiment 3, the first sub-pixel row 21 includes one of the red sub-pixels 1, and the second sub-pixel row 22 includes one of the green sub-pixels 2; the blue sub-pixel 3 crosses the first sub-pixel row 21 and the second sub-pixel row 22 along the longitudinal direction.

Referring to fig. 5, in embodiment 3, the second sub-pixel and the third sub-pixel are both located between the first sub-pixel and the spare first sub-pixel.

Example 4

Referring to fig. 6, most of the technical features of embodiment 3 are included in embodiment 4, and the difference is that in the optical pixel structure of embodiment 4, a plurality of pixel units 110 are arranged to form an odd-numbered row 51, a plurality of pixel units 110 'are arranged to form an even-numbered row 52, and the pixel units 110 in the odd-numbered row 51 and the pixel units 110' in the even-numbered row 52 are symmetrically arranged.

In this embodiment, one supporting pillar 105 is disposed between the pixel unit 110 and the pixel unit 110'; the support posts 105 are arranged along rows in a line which is located at the symmetry axis between the pixel cells 110 of the odd rows 51 and the pixel cells 110' of the even rows 52. Specifically, in the second row, a support column is further arranged between two adjacent second sub-pixels, and a support column is further arranged between two adjacent third sub-pixels; the second sub-pixel and the third sub-pixel are both located between the first sub-pixel and the spare first sub-pixel.

The foregoing embodiments of the present application provide a display panel and a driving method thereof, where each pixel unit includes two third sub-pixels, one of the third sub-pixels is standby, when the organic light emitting pixel structure is driven, the data driving unit controls one of the two third sub-pixels to be driven, and when the brightness of the earliest driven third sub-pixel is attenuated to 70% -80% of the initial brightness, the data driving unit drives the standby third sub-pixel to replace the brightness attenuated third sub-pixel, so as to achieve the brightness compensation effect, prolong the service life of the display panel, and avoid the problem of display effect degradation caused by different brightness attenuation degrees of the sub-pixels. And the adjacent light-emitting layers of the sub-pixels displaying the same color are connected and simultaneously prepared on the anode layer, so that the MASK opening difficulty can be reduced, the process difficulty can be reduced, the preparation steps can be simplified, the preparation cost can be saved, and the preparation efficiency can be improved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A display panel, comprising:

a plurality of first subpixels displaying a first color, arranged in a first row along a first direction;

a plurality of second subpixels displaying a second color, arranged in a second row along the first direction;

a plurality of third subpixels displaying a third color, disposed in the second row along the first direction;

a plurality of spare first sub-pixels displaying a first color, arranged in a third row along the first direction;

wherein the spare first sub-pixel is driven in a time-sharing manner with the adjacent first sub-pixel.

2. The display panel according to claim 1, wherein the light emitting layer of the first sub-pixel is connected to the light emitting layer of the adjacent spare first sub-pixel.

3. The display panel according to claim 1, wherein the second sub-pixels and the third sub-pixels are alternately arranged at intervals in a second row.

4. The display panel according to claim 1, wherein in the second row, a supporting column is further disposed between the second sub-pixel and the third sub-pixel, and the second sub-pixel, the third sub-pixel, the supporting column, the second sub-pixel, the third sub-pixel, and the supporting column are alternately arranged at intervals.

5. The display panel of claim 4, wherein the support posts are located between the first sub-pixel and the spare first sub-pixel; or the second sub-pixel and the third sub-pixel are both located between the first sub-pixel and the spare first sub-pixel.

6. The display panel according to claim 1, wherein the second sub-pixels, the third sub-pixels, the second sub-pixels, the third sub-pixels, and the third sub-pixels are alternately arranged at intervals in a second row.

7. The display panel according to claim 6, wherein in the second row, a supporting column is further disposed between two adjacent second sub-pixels, and a supporting column is further disposed between two adjacent third sub-pixels; the second sub-pixel and the third sub-pixel are both located between the first sub-pixel and the spare first sub-pixel.

8. The display panel according to claim 7, wherein the light emitting layers of two adjacent second sub-pixels are connected; the light emitting layers of two adjacent third sub-pixels are connected.

9. The display panel according to claim 6, wherein a support column is further disposed between the second sub-pixel and the third sub-pixel in the second row, and the support column is located between the first sub-pixel and the spare first sub-pixel.

10. The display panel of claim 1, further comprising a data driving unit for providing a plurality of data signals to the first sub-pixel, the spare first sub-pixel, the second sub-pixel, and the third sub-pixel; the data driving unit first drives the first sub-pixel, and when the luminance of the first sub-pixel is attenuated to 70-80% of the initial luminance, the data driving unit is changed to drive the spare first sub-pixel.