CN110992872B - Display panel, driving method thereof and display device - Google Patents
Display panel, driving method thereof and display device Download PDFInfo
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- CN110992872B CN110992872B CN201911365501.9A CN201911365501A CN110992872B CN 110992872 B CN110992872 B CN 110992872B CN 201911365501 A CN201911365501 A CN 201911365501A CN 110992872 B CN110992872 B CN 110992872B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2007—Display of intermediate tones
- G09G3/2074—Display of intermediate tones using sub-pixels
Abstract
The invention discloses a display panel, a driving method thereof and a display device. During display, M sub-pixels are selected from one sub-pixel to be lighted in each sub-period, and the positions of the lighted sub-pixels in the sub-pixels are not completely the same in different sub-periods of the same display period. It can ensure that each sub-pixel is not always lighted in one display period, thereby improving the display life of the display panel. Or, when displaying, the number of the sub-pixels lighted in the sub-pixels in different display periods is different, or the brightness of the sub-pixels lighted in the sub-pixels in different display periods is not completely the same. The brightness or the number of the lighted sub-pixels in the sub-pixels is increased to compensate the attenuation of the sub-pixels along with the time, so that the problem that the display panel cannot normally display due to the attenuation of the brightness of the sub-pixels is avoided, and the service life of the display panel can be prolonged.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel, a driving method thereof, and a display device.
Background
With the maturity of display technology and technology, the demand of vehicle-mounted applications for displays begins to grow rapidly, and compared with consumer product displays, vehicle-mounted displays have a longer service life, and with the increase of service life, pixels in the displays gradually decay, and when the decay reaches a certain degree, the displays cannot normally display. Therefore, in-vehicle applications have high requirements on the lifetime of the display.
Disclosure of Invention
The embodiment of the invention provides a display panel, a driving method thereof and a display device, which are used for prolonging the service life of the display panel.
An embodiment of the present invention provides a display panel, including: a plurality of sub-pixels arranged in a matrix, each of the sub-pixels including N sub-pixels, and the sub-pixels belonging to the same sub-pixel have the same color; n is an integer greater than 1;
each sub-pixel is displayed with at least one sub-pixel lighted;
in each sub-period of the same display period, the number of the sub-pixels which are lighted in the sub-pixels is M, and M is an integer less than N; in different sub-periods of the same display period, the positions of the lighted M sub-pixels in the sub-pixels are not completely the same;
or the number of the sub-pixels which are lighted in the sub-pixels in different display time periods is different, or the brightness of the sub-pixels which are lighted in the sub-pixels in different display time periods is not completely the same.
Correspondingly, the embodiment of the invention also provides a display device which comprises any one of the display panels provided by the embodiment of the invention.
Correspondingly, an embodiment of the present invention further provides a driving method for a display panel, where the display panel is any one of the display panels provided in the embodiments of the present invention, and the driving method includes:
when the sub-pixels are displayed, at least one sub-pixel is lightened;
in each sub-period of the same display period, the number of the sub-pixels which are lighted in the sub-pixels is M, and M is an integer less than N; in different sub-periods of the same display period, the positions of the lighted M sub-pixels in the sub-pixels are not completely the same.
Correspondingly, an embodiment of the present invention further provides a driving method of a display panel, where the display panel is any one of the display panels provided in the embodiments of the present invention, and Z sub-pixels in the sub-pixels are used as basic sub-pixels, and the rest N-Z sub-pixels are used as auxiliary sub-pixels; wherein Z is an integer greater than or equal to 1 and less than N; the driving method includes:
when the accumulated display time of the display panel is less than a preset value, the control circuit controls the sub-pixels to be only lightened when the basic sub-pixels are displayed;
when the accumulated display time of the display panel is larger than or equal to the preset value, the control circuit controls the basic sub-pixel and at least one auxiliary sub-pixel to be lightened when the sub-pixels are displayed, and the brightness of the lightened auxiliary sub-pixel is smaller than or equal to that of the basic sub-pixel.
The invention has the following beneficial effects:
in the display panel, the driving method thereof and the display device provided by the embodiment of the invention, one sub-pixel comprises a plurality of sub-pixels, and each sub-pixel can be independently controlled. During display, M sub-pixels are selected from one sub-pixel to be lighted in each sub-period, and the positions of the lighted sub-pixels in the sub-pixels are not completely the same in different sub-periods of the same display period. That is, it can be ensured that each sub-pixel is not always lighted during one display period, so that the display lifetime of the display panel can be improved. Or, when displaying, the number of the sub-pixels lighted in the sub-pixels in different display periods is different, or the brightness of the sub-pixels lighted in the sub-pixels in different display periods is not completely the same. The brightness or the number of the sub-pixels which are lighted in the sub-pixels is increased to compensate the attenuation of the sub-pixels along with the time, so that the problem that the display panel cannot normally display due to the attenuation of the brightness of the sub-pixels is avoided, and the service life of the display panel can be prolonged.
Drawings
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 a display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a display panel according to another embodiment of the present invention;
fig. 7 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 10 is a flowchart illustrating a driving method of a display panel according to an embodiment of the invention;
FIG. 11 is a schematic structural diagram of a sub-pixel according to an embodiment of the present invention;
fig. 12 is a flowchart illustrating a driving method of a display panel according to an embodiment of the invention;
FIG. 13 is a schematic structural diagram of a sub-pixel according to an embodiment of the present invention;
fig. 14 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is further described in conjunction with the accompanying drawings and examples. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted. The words expressing the position and direction described in the present invention are illustrated in the accompanying drawings, but may be changed as required and still be within the scope of the present invention. The drawings of the present invention are for illustrative purposes only and do not represent true scale.
It should be noted that in the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.
The following describes a display panel, a driving method thereof, and a display device according to an embodiment of the present invention with reference to the accompanying drawings.
Fig. 1 shows a display panel according to an embodiment of the present invention, where fig. 1 is a schematic structural diagram of the display panel according to the embodiment of the present invention; the method comprises the following steps:
a plurality of sub-pixels 10 arranged in a matrix, each sub-pixel 10 including N sub-pixels 101, and the sub-pixels 101 belonging to the same sub-pixel 10 have the same color; n is an integer greater than 1;
each sub-pixel 10 is displayed with at least one sub-pixel 101 being lighted;
in each sub-period of the same display period, the number of sub-pixels 101 to be lit in the sub-pixel 10 is M, and M is an integer smaller than N; in different sub-periods of the same display period, the positions of the lighted M sub-pixels 101 in the sub-pixel 10 are not completely the same;
alternatively, the number of the sub-pixels 101 to be lit in the sub-pixels 10 in different display periods is different, or the luminance of the sub-pixels 101 to be lit in the sub-pixels 10 in different display periods is not completely the same.
According to the display panel provided by the embodiment of the invention, one sub-pixel comprises a plurality of sub-pixels, and each sub-pixel can be independently controlled. During display, M sub-pixels are selected from one sub-pixel to be lighted in each sub-period, and the positions of the lighted sub-pixels in the sub-pixels are not completely the same in different sub-periods of the same display period. That is, it can be ensured that each sub-pixel is not always lighted during one display period, so that the display lifetime of the display panel can be improved. Or, when displaying, the number of the sub-pixels lighted in the sub-pixels in different display periods is different, or the brightness of the sub-pixels lighted in the sub-pixels in different display periods is not completely the same. The brightness or the number of the sub-pixels which are lighted in the sub-pixels is increased to compensate the attenuation of the sub-pixels along with the time, so that the problem that the display panel cannot normally display due to the attenuation of the brightness of the sub-pixels is avoided, and the service life of the display panel can be prolonged.
In a specific implementation, the display panel generally includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and certainly, in order to improve the display effect, some display panels further include a white sub-pixel or a yellow sub-pixel, which is not limited herein.
Further, in the display panel provided in the embodiment of the present invention, the arrangement rule between the sub-pixels is not limited, and the arrangement manner of the sub-pixels may be any arrangement manner.
Optionally, in the display panel provided in the embodiment of the present invention, as shown in fig. 2, fig. 2 is another schematic structural diagram of the display panel provided in the embodiment of the present invention; further comprising: a plurality of data lines data, a plurality of scan lines scan, gate circuits 20 corresponding to the sub-pixels 10 in each column one by one, and source driving circuits 30 connected to the gate circuits 20;
each row of sub-pixels 10 is correspondingly connected with one scan line scan;
each column of sub-pixels 10 corresponds to N data lines data;
for each sub-pixel 10 in the same column of sub-pixels 10, the N sub-pixels 101 in the sub-pixel 10 are respectively connected with the N data lines data in a one-to-one correspondence manner;
the N data lines data corresponding to each column of sub-pixels 10 are connected to the gate circuit 20 corresponding to the column of sub-pixels 10.
In specific implementation, when the sub-pixel 101 needs to be turned on for each sub-pixel 101 in the same sub-pixel 10, the source driving circuit 30 supplies a signal to the data line data connected to the sub-pixel 101 through the gate circuit 20 corresponding to the sub-pixel column where the sub-pixel 101 is located, and then the data line data supplies the signal to the sub-pixel 101.
Optionally, in the display panel provided in the embodiment of the present invention, as shown in fig. 3, fig. 3 is a schematic structural diagram of the display panel provided in the embodiment of the present invention; further comprising: a plurality of data lines data, a plurality of scan lines scan, gate circuits 20 corresponding to the respective sub-pixels 10 one to one, and source driving circuits 30 connected to the respective data lines data;
each row of sub-pixels 10 is correspondingly connected with one scan line scan;
each column of sub-pixels 10 is correspondingly connected with one data line data;
In specific implementation, for each sub-pixel 101 in the same sub-pixel 10, when the sub-pixel 101 needs to be lit, the source driving circuit 30 provides a sign to the gate circuit 20 through the data line data corresponding to the sub-pixel 101, and then the gate circuit 20 provides a signal to the sub-pixel 101.
Optionally, in the display panel provided in the embodiment of the present invention, as shown in fig. 4, fig. 4 is a schematic structural diagram of the display panel provided in the embodiment of the present invention; further comprising: a plurality of data lines data, a plurality of scan lines scan, and N source driving circuits 30;
each row of sub-pixels 10 is correspondingly connected with one scan line scan;
each column of sub-pixels 10 corresponds to N data lines data;
for each sub-pixel 10 in the same column of sub-pixels 10, the N sub-pixels 101 in the sub-pixel 10 are respectively connected with the N data lines data in a one-to-one correspondence manner; the N data lines data corresponding to each column of sub-pixels 10 are respectively connected to the N source driving circuits 30 in a one-to-one correspondence.
In a specific implementation, when the sub-pixel 101 needs to be turned on for each sub-pixel 101 in the same sub-pixel 10, the source driving circuit 30 connected to the data line data corresponding to the sub-pixel 101 directly supplies a signal to the sub-pixel 101 through the data line data corresponding to the sub-pixel 101.
In a specific implementation, in the display panel provided in the embodiment of the present invention, the sizes of the sub-pixels in the same sub-pixel may be the same or different, and are not limited herein.
Optionally, in the display panel provided in the embodiment of the present invention, as shown in fig. 1 to 4, the areas of the sub-pixels 101 in the same sub-pixel 10 are the same. This facilitates the area of the sub-pixel 101 to be the same for each lighting of the sub-pixel 10 when the sub-pixels 101 are alternately lighted.
In specific implementation, in the display panel provided in the embodiment of the present invention, the shape of each sub-pixel in the same sub-pixel is not limited, and optionally, as shown in fig. 1 to 4, the shape of each sub-pixel 101 in the same sub-pixel 10 is the same. Thus, the difficulty of the manufacturing process can be reduced.
Optionally, in the display panel provided in the embodiment of the present invention, as shown in fig. 5 to 8, fig. 5 is a schematic view of another structure of the display panel provided in the embodiment of the present invention; fig. 6 is a schematic structural diagram of a display panel according to an embodiment of the present invention; fig. 7 is a schematic structural diagram of a display panel according to an embodiment of the present invention; fig. 8 is a schematic structural diagram of a display panel according to an embodiment of the present invention; n sub-pixels of the sub-pixel 10 are arranged in a matrix of X rows and Y columns, where N = X × Y, and X and Y are integers greater than or equal to 1. This ensures that the illuminated sub-pixel 101 of the sub-pixel 10 is as free as possible from aliasing during display.
Specifically, fig. 5 to 8 are illustrated by taking N =6 as an example, and as shown in fig. 5, in one sub-pixel 10, 6 sub-pixels 101 are arranged in the row direction X, that is, X =1, y =6; alternatively, as shown in fig. 6, in one sub-pixel 10, 6 sub-pixels 101 are arranged in the column direction y, that is, X =6, y =1; alternatively, as shown in fig. 7, in one sub-pixel 10, 6 sub-pixels 101 are arranged in a matrix of 2 rows and 3 columns, i.e., X =2, y =3; alternatively, as shown in fig. 8, in one sub-pixel 10, 6 sub-pixels 101 are arranged in a matrix of 3 rows and 2 columns, that is, X =3 and y =2.
Optionally, in the display panel provided in the embodiment of the present invention, as shown in fig. 9, fig. 9 is a schematic view of another structure of the display panel provided in the embodiment of the present invention; of the N sub-pixels 101 in one sub-pixel 10, Z sub-pixels 101 are used as the base sub-pixels 101a, and the remaining N-Z sub-pixels 101 are used as the auxiliary sub-pixels 101b. The area of the basic sub-pixel 101a is larger than that of the auxiliary sub-pixel 101b, so that the basic sub-pixel 101a is used as a main display pixel and the auxiliary sub-pixel 101b is used as a compensation pixel during display.
According to the display panel provided by the embodiment of the invention, one sub-pixel comprises a plurality of sub-pixels, and each sub-pixel can be independently controlled, so that the service life of the display panel can be prolonged by adopting an alternate lighting method during display. Specifically, M sub-pixels are selected to be lit in one sub-pixel in each sub-period, and the positions of the lit sub-pixels in the sub-pixels are not completely the same in different sub-periods of the same display period. That is, it can be ensured that each sub-pixel is not always lighted during one display period, so that the display lifetime of the display panel can be improved. Of course, in the display, the number of sub-pixels to be lit in the sub-pixels in different display periods may also be different, for example, the number of sub-pixels to be lit in the sub-pixels is gradually increased along with the display time. Alternatively, in the display, the luminances of the sub-pixels to be lit up in the sub-pixels in different display periods may not be completely the same. For example, as the display time gradually increases, the luminance of the sub-pixels gradually decreases, so that the luminance of the sub-pixels which are lighted in the sub-pixels can be sequentially increased to compensate the time-dependent decrease of the sub-pixels, thereby preventing the display panel from displaying abnormally due to the decrease of the luminance of the sub-pixels, and further prolonging the service life of the display panel.
The following describes the display panel provided in the embodiment of the present invention in detail with reference to the driving method.
Based on the same inventive concept, an embodiment of the present invention further provides a driving method of a display panel, where the display panel is any one of the display panels provided in the embodiments of the present invention, as shown in fig. 10, and fig. 10 is a flowchart of the driving method of the display panel provided in the embodiments of the present invention; the driving method includes:
s101, at least one sub-pixel is lightened when the sub-pixels are displayed;
s102, in each sub-period of the same display period, the number of sub-pixels to be lightened in the sub-pixels is M, and M is an integer smaller than N; in different sub-periods of the same display period, the positions of the lighted M sub-pixels in the sub-pixels are not completely the same.
In the driving method provided by the embodiment of the invention, only M sub-pixels in the sub-pixels are lighted in each sub-period, and the positions of the lighted M sub-pixels in the sub-pixels are not completely the same in different sub-periods of the same display period, so that it can be ensured that each sub-pixel is not always lighted in one display period, and the display life of the display panel can be prolonged.
In a specific implementation, the duration of one sub-period may be one frame, that is, each time one frame is scanned, the position of the sub-pixel to be lit in the sub-pixel is changed once, so that the problem of image sticking can be improved. Of course, in practical implementation, the duration of one sub-period may also be a period of time, such as 100 hours, 500 hours, etc., so that the position of the sub-pixel to be lighted in the sub-pixel changes once every period of time.
Optionally, in the driving method provided by the embodiment of the present invention, the sub-pixels are lit in the same display period in the same number of sub-periods, which may ensure that the use time of each sub-pixel is the same in one display period, so as to avoid premature life loss of some sub-pixels due to frequent use.
Optionally, in the driving method provided in the embodiment of the present invention, when M =1, one display period includes N sub-periods, each sub-pixel lights up only one sub-pixel in each sub-period, and the number of sub-periods where each sub-pixel lights up in one display period is 1. This ensures that the time of use of each sub-pixel is the same during a display period. When M is>1, one display period includes C N M sub-periods, each sub-pixel lights up M sub-pixels in each sub-period, and in one display period, the number of the sub-periods that each sub-pixel lights up is C N M--1 1 This ensures that the time of use of each sub-pixel is the same during a display period.
Optionally, in the driving method provided in the embodiment of the present invention, in each sub-period, M sub-pixels lit up in the sub-pixels are arranged in a matrix of K rows and L columns; wherein M = K × L, K is more than or equal to 1 and less than or equal to X, and L is more than or equal to 1 and less than or equal to Y. This can avoid aliasing as much as possible during display, for example, if the sub-pixels 101 at positions 1, 2 and 3 are simultaneously lit in fig. 11, or if the sub-pixels 101 at positions 1, 2, 4 and 6 are simultaneously lit, aliasing may occur during display.
Specifically, taking the structure of the sub-pixel shown in fig. 11 as an example, fig. 11 is a schematic structural diagram of a sub-pixel according to an embodiment of the present invention; when M =2, the positions of the lighted 2 sub-pixels 101 in each sub-period sub-pixel may be selected from the following positions: position 1 and position 2, position 3 and position 4, position 5 and position 6, position 1 and position 3, position 3 and position 5, position 2 and position 4, and position 4 and position 6. When M =3, the positions of the lighted 3 sub-pixels 101 in each sub-period sub-pixel may be selected from the following positions: position 1, position 2 and position 3, position 2, position 4 and position 6. When M =4, the positions of the lighted 4 sub-pixels 101 in each sub-period sub-pixel may be selected from the following positions: position 1, position 2, position 3 and position 4, position 3, position 4, position 5 and position 6.
Based on the same inventive concept, an embodiment of the present invention further provides a driving method of a display panel, where the display panel is any one of the display panels provided in the embodiments of the present invention, and Z sub-pixels in sub-pixels are used as basic sub-pixels, and the remaining N-Z sub-pixels are used as auxiliary sub-pixels; wherein Z is an integer greater than or equal to 1 and less than N; as shown in fig. 12, fig. 12 is a flowchart of a driving method of a display panel according to an embodiment of the present invention;
the driving method includes:
s201, when the accumulated display time of the display panel is smaller than a preset value, the control circuit controls the sub-pixels to be only lighted up when displaying;
s202, when the accumulated display time of the display panel is larger than or equal to a preset value, the control circuit controls the basic sub-pixel and at least one auxiliary sub-pixel to be lightened when the sub-pixels are displayed, and the brightness of the lightened auxiliary sub-pixel is smaller than or equal to that of the basic sub-pixel.
In the driving method provided by the embodiment of the invention, when the accumulated display time of the display panel is less than the preset value, the control circuit controls the sub-pixels to only light the basic sub-pixels during the display, and when the accumulated display time of the display panel is greater than or equal to the preset value, the control circuit controls the sub-pixels to light the basic sub-pixels and at least one auxiliary sub-pixel during the display, and the brightness of the lighted auxiliary sub-pixel is less than or equal to that of the basic sub-pixel, so that the attenuation of the brightness of the basic sub-pixel along with the time is compensated by using the auxiliary sub-pixel along with the increase of the accumulated display time of the display panel, thereby avoiding the abnormal display of the display panel caused by the attenuation of the brightness of the sub-pixel and further prolonging the service life of the display panel.
In a specific implementation, the preset value may be determined according to an actual application of the display panel, and is not limited herein. For example, if the brightness of the display panel is significantly reduced after 500 hours of use, the preset time may be set to 500 hours.
Optionally, in the driving method provided in the embodiment of the present invention, when Z is greater than 1, the Z basic sub-pixels are Z sub-pixels that are sequentially and adjacently disposed, so that it is ensured that the sub-pixels have relatively concentrated luminance during displaying.
Specifically, taking fig. 11 as an example, when Z =2, the positions of the 2 base sub-pixels may be selected from the following positions: position 1 and position 2, position 3 and position 4, position 5 and position 6, position 1 and position 3, position 3 and position 5, position 2 and position 4, and position 4 and position 6. When Z =3, the positions of the 3 fundamental sub-pixels may be selected from the following positions: position 1, position 2 and position 3, position 2, position 4 and position 6. Therefore, the concentration of the brightness of the sub-pixels can be ensured, and the sawtooth can be avoided.
Optionally, in the driving method provided in the embodiment of the present invention, when the accumulated display time of the display panel is greater than or equal to the preset value, the longer the accumulated display time is, the greater the number of auxiliary sub-pixels that are lit by the sub-pixels during display is, so that the actual light-emitting luminance of the sub-pixels is equal to the target luminance.
Specifically, also taking fig. 11 as an example, for example, the sub-pixel 101 at position 3 and position 4 is the basic sub-pixel 101, and the sub-pixel 101 at position 1, position 2, position 5 and position 6 is the auxiliary sub-pixel 101, when the cumulative display time of the display panel is less than 500 hours, and only the sub-pixels 101 at the positions 3 and 4 are lighted, when the cumulative display time of the display panel is greater than or equal to 500 hours and less than 1000 hours, the sub-pixels 101 at the positions 1, 3 and 4 are lighted, and the brightness of the sub-pixel 101 at the position 1 is less than or equal to that of the sub-pixel 101 at the position 4. When the display panel cumulative display time is greater than or equal to 1000 hours and less than 1500 hours, the sub-pixels 101 at the position 1, the position 2, the position 3 and the position 4 are lighted, and the luminance of the sub-pixels 101 at the position 1 and the position 2 is less than or equal to the luminance of the sub-pixels 101 at the position 4. When the display panel cumulative display time is greater than or equal to 1000 hours and less than 2000 hours, the sub-pixels 101 at the position 1, the position 2, the position 5, the position 3, and the position 4 are lit, and the luminance of the sub-pixels 101 at the position 1, the position 2, and the position 5 is less than or equal to the luminance of the sub-pixels 101 at the position 4. When the display panel cumulative display time is greater than or equal to 2000 hours, sub-pixel 101 at position 1, position 2, position 5, position 6, position 3 and position 4 is lit, and the luminance of sub-pixel 101 at position 1, position 2, position 5 and position 6 is less than or equal to the luminance of sub-pixel 101 at position 4.
Optionally, in the driving method provided in this embodiment of the present invention, when the cumulative display time of the display panel is greater than or equal to the preset value, the longer the cumulative display time is, the higher the luminance of the auxiliary sub-pixel that is lit by the sub-pixel at the time of display is, so that the actual light-emitting luminance of the sub-pixel is equal to the target luminance.
Specifically, taking fig. 13 as an example, fig. 13 is a schematic structural diagram of a sub-pixel according to an embodiment of the present invention; for example, the sub-pixel at position 1 is the basic sub-pixel 101a, the sub-pixels at positions 2 and 3 are the auxiliary sub-pixels 101b, when the cumulative display time of the display panel is less than 500 hours, only the basic sub-pixel 101a at position 1 is lighted, when the display panel cumulative display time is greater than or equal to 500 hours and less than 1000 hours, the base sub-pixel 101a at the position 1 and the auxiliary sub-pixel 101b at the position 2 are lighted, and the brightness of the auxiliary sub-pixel 101b at the position 2 is 10% of that of the base sub-pixel 101 a. When the display panel has a cumulative display time greater than or equal to 1000 hours and less than 1500 hours, the base sub-pixel 101a at position 1 and the auxiliary sub-pixel 101b at position 2 are turned on, and the luminance of the auxiliary sub-pixel 101b at position 2 is 20% of that of the base sub-pixel 101 a. When the display panel cumulative display time is greater than or equal to 1000 hours and less than 2000 hours, the base sub-pixel 101a at the position 1 and the auxiliary sub-pixel 101b at the position 2 are lighted, and the brightness of the auxiliary sub-pixel 101b at the position 2 is 30% of that of the base sub-pixel 101 a. The luminance of the auxiliary sub-pixel 101b at position 2 is sequentially increased along with the accumulated display time of the display panel, and the luminance of the auxiliary sub-pixel 101b at position 3 is sequentially increased after the luminance of the auxiliary sub-pixel 101b at position 2 is equal to the luminance of the base sub-pixel 101a at lighting position 1.
Optionally, in the driving method provided by the embodiment of the invention, during displaying of the sub-pixels, the sub-pixels that are lighted up in the sub-pixels are sequentially and adjacently disposed. Also to ensure that the brightness of the sub-pixels is concentrated.
Based on the same inventive concept, the embodiment of the invention further provides a display device, which comprises any one of the display panels provided by the embodiment of the invention. The display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like shown in fig. 14. The display device can be implemented by referring to the above embodiments of the display panel, and repeated descriptions are omitted.
According to the display panel, the driving method thereof and the display device provided by the embodiment of the invention, one sub-pixel comprises a plurality of sub-pixels, and each sub-pixel can be independently controlled. During display, M sub-pixels are selected from one sub-pixel to be lighted in each sub-period, and the positions of the lighted sub-pixels in the sub-pixels are not completely the same in different sub-periods of the same display period. That is, it can be ensured that each sub-pixel is not always lighted during one display period, so that the display lifetime of the display panel can be improved. Or, when displaying, the number of the sub-pixels lighted in the sub-pixels in different display periods is different, or the brightness of the sub-pixels lighted in the sub-pixels in different display periods is not completely the same. The brightness or the number of the sub-pixels which are lighted in the sub-pixels is increased to compensate the attenuation of the sub-pixels along with the time, so that the problem that the display panel cannot normally display due to the attenuation of the brightness of the sub-pixels is avoided, and the service life of the display panel can be prolonged.
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 (16)
1. A display panel, comprising:
a plurality of sub-pixels arranged in a matrix, each sub-pixel including N sub-pixels, and each sub-pixel belonging to the same sub-pixel having the same color; n is an integer greater than 1;
each sub-pixel is displayed with at least one sub-pixel lighted;
in each sub-period of the same display period, the number of the sub-pixels which are lighted in the sub-pixels is M, and M is an integer less than N; in different sub-periods of the same display period, the positions of the lighted M sub-pixels in the sub-pixels are not completely the same;
or, Z sub-pixels in the sub-pixels are taken as basic sub-pixels, and the rest N-Z sub-pixels are taken as auxiliary sub-pixels; wherein Z is an integer greater than or equal to 1 and less than N;
when the accumulated display time of the display panel is less than a preset value, only the basic sub-pixel is lightened when the sub-pixel is displayed; when the accumulated display time of the display panel is larger than or equal to the preset value, the basic sub-pixel and at least one auxiliary sub-pixel are lightened when the sub-pixels are displayed, and the brightness of the lightened auxiliary sub-pixel is smaller than or equal to that of the basic sub-pixel; and the number of the sub-pixels lighted in the sub-pixels in different display periods is different, or the brightness of the sub-pixels lighted in the sub-pixels in different display periods is not completely the same.
2. The display panel of claim 1, further comprising: the pixel driving circuit comprises a plurality of data lines, a plurality of scanning lines, gating circuits corresponding to the sub-pixels in each row one to one, and source driving circuits connected with the gating circuits;
each row of the sub-pixels is correspondingly connected with one scanning line;
each column of the sub-pixels corresponds to N data lines;
for each sub-pixel in the sub-pixels in the same column, the N sub-pixels in the sub-pixels are respectively connected with the N data lines in a one-to-one correspondence manner;
and the N data lines corresponding to the sub-pixels in each column are connected with the gating circuits corresponding to the sub-pixels in the column.
3. The display panel according to claim 1, further comprising: the pixel driving circuit comprises a plurality of data lines, a plurality of scanning lines, gating circuits corresponding to the sub-pixels one by one and source driving circuits connected with the data lines;
each row of the sub-pixels is correspondingly connected with one scanning line;
each column of the sub-pixels is correspondingly connected with one data line;
different sub-pixels in the sub-pixels are connected with the same data line through the same gating circuit.
4. The display panel of claim 1, further comprising: the display device comprises a plurality of data lines, a plurality of scanning lines and N source driving circuits;
each row of the sub-pixels is correspondingly connected with one scanning line;
each column of the sub-pixels corresponds to N data lines;
for each sub-pixel in the sub-pixels in the same column, the N sub-pixels in the sub-pixels are respectively connected with the N data lines in a one-to-one correspondence manner; and N data lines corresponding to the sub-pixels in each row are respectively connected with the N source drive circuits in a one-to-one correspondence mode.
5. The display panel according to any one of claims 1 to 4,
the area of each sub-pixel in the same sub-pixel is the same.
6. The display panel according to any one of claims 1 to 4,
the shape of each sub-pixel in the same sub-pixel is the same.
7. The display panel according to any one of claims 1 to 4, wherein N of the sub-pixels are arranged in a matrix of X rows and Y columns, where N = X X Y, and X and Y are integers greater than or equal to 1.
8. A display device characterized by comprising the display panel according to any one of claims 1 to 7.
9. A driving method of a display panel according to any one of claims 1 to 7, the driving method comprising:
when the sub-pixels are displayed, at least one sub-pixel is lightened;
in each sub-period of the same display period, the number of the sub-pixels which are lighted in the sub-pixels is M, and M is an integer less than N; in different sub-periods of the same display period, the positions of the lighted M sub-pixels in the sub-pixels are not completely the same.
10. The driving method as claimed in claim 9, wherein the sub-pixels are lit by the same number of sub-periods in the same display period.
11. The driving method as claimed in claim 10, wherein in each sub-period, M sub-pixels to be lit up in the sub-pixels are arranged in a matrix of K rows and L columns; wherein M = K × L, K is more than or equal to 1 and less than or equal to X, and L is more than or equal to 1 and less than or equal to Y.
12. A method of driving a display panel according to any one of claims 1 to 7, wherein Z of said sub-pixels are basic sub-pixels, and the remaining N-Z of said sub-pixels are auxiliary sub-pixels; wherein Z is an integer greater than or equal to 1 and less than N; the driving method includes:
when the accumulated display time of the display panel is less than a preset value, the control circuit controls the sub-pixels to be only lightened when the basic sub-pixels are displayed;
when the accumulated display time of the display panel is larger than or equal to the preset value, the control circuit controls the basic sub-pixel and at least one auxiliary sub-pixel to be lightened when the sub-pixels are displayed, and the brightness of the lightened auxiliary sub-pixel is smaller than or equal to that of the basic sub-pixel.
13. The driving method according to claim 12, wherein when Z is larger than 1, Z of the base sub-pixels are Z of the sub-pixels adjacently arranged in sequence.
14. The driving method according to claim 12,
when the accumulated display time of the display panel is greater than or equal to the preset value, the longer the accumulated display time is, the more the number of the auxiliary sub-pixels which are lighted up when the sub-pixels are displayed is, so that the actual light-emitting brightness of the sub-pixels is equal to the target brightness.
15. The driving method according to claim 12,
when the accumulated display time of the display panel is greater than or equal to the preset value, the longer the accumulated display time is, the higher the brightness of the auxiliary sub-pixel which is lighted up when the sub-pixel is displayed is, so that the actual light-emitting brightness of the sub-pixel is equal to the target brightness.
16. The driving method according to any one of claims 12 to 15, wherein, when the sub-pixels are displayed, the sub-pixels that are lit up in the sub-pixels are arranged adjacent to each other in sequence.
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