Display panel, control chip and display device

Abstract

The embodiment of the invention provides a display panel, a control chip and a display device, the display panel comprises a plurality of sub-pixels, and the plurality of sub-pixels comprise a first color sub-pixel. The first color sub-pixel comprises first to nth light-emitting devices, and n is greater than or equal to 2; in the first working mode, the first light-emitting device in any light-emitting first color sub-pixel emits light, and the nth light-emitting device in the first color sub-pixel which at least partially emits light does not emit light; and in the second working mode, the nth light-emitting device in any light-emitting first color sub-pixels emits light, and the first light-emitting device in at least part of the light-emitting first color sub-pixels does not emit light. According to the embodiment of the invention, the use frequency of the first light-emitting device and the nth light-emitting device is more balanced, so that the service life of each light-emitting device in the first color sub-pixel is further prolonged, and a good use effect of the plurality of light-emitting devices is ensured.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel, a control chip, and a display device. Background Art

[0002] The display panel includes a plurality of sub-pixels, each of which includes a light-emitting device for emitting light. During the application of the display panel, the service life of the light-emitting device is important to ensure the display effect of the display panel during the application. Summary of the invention

[0003] In view of this, the present application provides a display panel, a control chip, and a display device to solve the above problems.

[0004] In a first aspect, an embodiment of the present application provides a display panel, including a plurality of sub-pixels, wherein the plurality of sub-pixels include a first color sub-pixel; the first color sub-pixel includes 1st to nth light-emitting devices, where n≥2;

[0005] The working mode of the display panel includes a first working mode and a second working mode;

[0006] Among them, in the first operating mode, the first light-emitting device in any luminous first color sub-pixel emits light and the nth light-emitting device in at least partially luminous first color sub-pixel does not emit light; in the second operating mode, the nth light-emitting device in any luminous first color sub-pixel emits light and the first light-emitting device in at least partially luminous first color sub-pixel does not emit light.

[0007] In a second aspect, an embodiment of the present application provides a control chip for driving the display panel provided in the first aspect to emit light.

[0008] In a third aspect, an embodiment of the present application provides a display panel, including the display panel provided in the first aspect.

[0009] In the embodiment of the present application, a plurality of light-emitting devices are arranged in the sub-pixels in the display panel, and a single or multiple light-emitting devices can be flexibly controlled to emit light, which is conducive to ensuring that the frequency of lighting up the plurality of light-emitting devices in the sub-pixels is more uniform, and further improving the service life of the light-emitting devices. In addition, the display panel is arranged to include a first working mode and a second working mode, and the display panel can be switched between the first working mode and the second working mode, so that the use frequency of the first light-emitting device and the nth light-emitting device is more balanced, thereby further improving the service life of each light-emitting device in the first color sub-pixel, and also conducive to ensuring that the plurality of light-emitting devices maintain a good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0011] Figure 1 A schematic plan view of a display panel provided in an embodiment of the present application;

[0012] Figure 2 A method provided in the embodiment of the present application Figure 1 A partial plan view of the middle area;

[0013] Figure 3 A schematic diagram of a working mode of a display panel provided in an embodiment of the present application;

[0014] Figure 4 A schematic diagram of another working mode of a display panel provided in an embodiment of the present application;

[0015] Figure 5 A schematic diagram of another working mode of a display panel provided in an embodiment of the present application;

[0016] Figure 6 A schematic diagram of another working mode of a display panel provided in an embodiment of the present application;

[0017] Figure 7 A schematic plan view of another display panel provided in an embodiment of the present application;

[0018] Figure 8 A schematic diagram of another working mode of a display panel provided in an embodiment of the present application;

[0019] Fig. 9 A schematic diagram of another working mode of a display panel provided in an embodiment of the present application;

[0020] Fig.10 A schematic diagram of a pixel circuit provided in an embodiment of the present application;

[0021] Fig.11 A schematic diagram of another pixel circuit provided in an embodiment of the present application;

[0022] Fig.12 A schematic plan view of another display panel provided in an embodiment of the present application;

[0023] Fig.13 A schematic plan view of another display panel provided in an embodiment of the present application;

[0024] Fig.14A schematic plan view of another display panel provided in an embodiment of the present application;

[0025] Fig.15 A schematic diagram of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0027] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0028] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0029] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0030] In the description of this specification, it is necessary to understand that the words such as "substantially", "approximately", "approximately", "about", "roughly", "substantially" and the like described in the claims and embodiments of the present application refer to what can be generally recognized within a reasonable process operation range or tolerance range, rather than an exact value.

[0031] It should be understood that although the terms first, second, etc. may be used to describe color sub-pixels, operating modes, etc. in the embodiments of the present application, these should not be limited to these terms. These terms are only used to distinguish color sub-pixels, operating modes, etc. from each other. For example, without departing from the scope of the embodiments of the present application, the first operating mode may also be referred to as the second operating mode, and similarly, the second operating mode may also be referred to as the first operating mode. The applicant of this case has provided a solution to the problems existing in the prior art through careful and in-depth research.

[0032] Figure 1 A schematic plan view of a display panel provided in an embodiment of the present application, Figure 2 A method provided in the embodiment of the present application Figure 1 A partial plan view of the central area. Figure 3 A schematic diagram of a working mode of a display panel provided in an embodiment of the present application.

[0033] The present application embodiment provides a display panel 100, such as Figure 1-Figure 2 As shown, the display panel 100 includes a plurality of sub-pixels 10, including a first color sub-pixel 101. Optionally, the light emitting color of the first color sub-pixel 101 is one of red, green, and blue. The first color sub-pixel 101 includes the first light emitting device 201 to the nth light emitting device 20n, where n≥2.

[0034] In the related art, a light-emitting device is usually prepared in a sub-pixel to perform light-emitting work. However, in the case of long-term use, a light-emitting device is used at a high frequency, which is not conducive to extending the service life of the light-emitting device and ensuring the light output effect of the display panel.

[0035] Therefore, in the embodiment of the present application, setting a color sub-pixel 101 to include more than 2 light-emitting devices 20 is beneficial to using multiple light-emitting devices 20 to jointly achieve the target brightness, thereby reducing the device pressure of a single light-emitting device 20 to achieve the target brightness; it is also beneficial to allow multiple light-emitting devices 20 to alternately emit light to complete the light output of a sub-pixel 10 and provide conditions, thereby effectively improving the service life of the light-emitting device 20, thereby extending the service life of the display panel 100, and ensuring the display effect of the display panel 100 during long-term use.

[0036] Combination Figure 3 As shown, the working modes of the display panel 100 provided in the embodiment of the present application include a first working mode M1 and a second working mode M2. Figure 3 In the working mode representation in , the light-emitting device 20 filled with a dark shadow among the multiple light-emitting devices 20 of a first color sub-pixel 101 is represented as the light-emitting device 20 that needs to be illuminated.

[0037] Among them, in the first working mode M1, the first light-emitting device 201 in any emitting first color sub-pixel 101 emits light and the nth light-emitting device 20n in the first color sub-pixel 101 that at least partially emits light does not emit light. When the display panel 100 is operated in the first mode M1, in the first color sub-pixel 101 that at least partially emits light, one or more light-emitting devices 20 in the first color sub-pixel 101 can be set to emit light to achieve the target brightness. At this time, when selecting to drive one or more light-emitting devices 20 among the multiple light-emitting devices 20 to emit light, the first light-emitting device 201 is selected to emit light with a higher priority, and the first light-emitting device 201 is selected to light up first. For example, combined with Figure 3As shown, a first color sub-pixel 101 includes 3 sub-pixels, n=3; the three light-emitting devices 20 are respectively the first light-emitting device 201, the second light-emitting device 202, and the third light-emitting device 203. If in the first working mode M1, when a first color sub-pixel 101 reaches the target brightness, two light-emitting devices 20 are required to emit light together, then it is preferred that the first light-emitting device 201 emits light and the second light-emitting device 202 emits light; if in the first working mode M1, when a first color sub-pixel 101 reaches the target brightness, only one light-emitting device 20 is required to emit light, then the first light-emitting device 201 is preferably selected to emit light.

[0038] In the second working mode M2, the nth light-emitting device 20n in any emitting first color sub-pixel 101 emits light and the first light-emitting device 201 in at least partially emitting first color sub-pixel 101 does not emit light. When the display panel 100 is operated in the second mode M2, in at least partially emitting first color sub-pixel 101, one or more light-emitting devices 20 in the first color sub-pixel 101 may be set to emit light to achieve target brightness. At this time, when selecting to drive one or more light-emitting devices 20 among the multiple light-emitting devices 20 to emit light, the third light-emitting device 203 is selected to emit light with a higher priority, and the third light-emitting device 20 is selected to light up first.

[0039] To sum up, in different working modes of the display panel 100, the priority of selecting and lighting up multiple light-emitting devices 20 is swapped, which is beneficial to avoid the situation where the first light-emitting device 201 or the nth light-emitting device 20n is always selected to emit light multiple times when one or more light-emitting devices 20 need to be lit to emit light, thereby reducing the frequency of use of the first light-emitting device 201 or the nth light-emitting device 20n, and further beneficial to ensuring that the service life of multiple light-emitting devices 20 is relatively equal and the display effect is similar.

[0040] In the embodiment of the present application, a plurality of light-emitting devices 20 are arranged in the sub-pixel 10 in the display panel 100, and a single or multiple light-emitting devices 20 can be flexibly controlled to emit light, which is conducive to ensuring that the frequency of lighting up the plurality of light-emitting devices 20 in the sub-pixel 10 is more uniform, and further improving the service life of the light-emitting devices 20. In addition, the display panel 100 is arranged to include a first working mode M1 and a second working mode M2, and the display panel 100 can switch between the first working mode M1 and the second working mode M2, so that the use frequency of the first light-emitting device 201 and the nth light-emitting device 20n is more balanced, thereby further improving the service life of each light-emitting device 20 in the first color sub-pixel 101, and is also conducive to ensuring that the plurality of light-emitting devices 20 maintain a good use effect.

[0041] Figure 4A schematic diagram of another working mode of a display panel provided in an embodiment of the present application.

[0042] In one embodiment of the present application, when the luminance of the first color sub-pixel 101 in the display panel 100 belongs to the first range L1, the first color sub-pixel 101 includes x1 luminous light-emitting devices 20. When the luminance of the first color sub-pixel 101 belongs to the second range L2, the first color sub-pixel 101 includes x2 luminous light-emitting devices 20. The maximum value of the first range L1 is less than or equal to the minimum value of the second range L2, and x1 is less than x2, where x2 is a value less than or equal to n.

[0043] Exemplarily, the luminous brightness of the first color sub-pixel 101 is represented by grayscale. Optionally, the first range L1 is the luminous brightness range of the first color sub-pixel 101 when the grayscale is between 1-160, and the second range L2 is the luminous brightness range of the first color sub-pixel 101 when the grayscale is between 161-255. The maximum value of the first range L1 is less than or equal to the minimum value of the second range L2, which can indicate that the brightness of the first color sub-pixel 101 working in the first range L1 is less than the brightness of the first color sub-pixel 101 working in the second range L2. Accordingly, the number of light-emitting devices 20 that need to be lit to generate the target brightness of the first color sub-pixel 101 working in the first range L1 is less than the number of light-emitting devices 20 that need to be lit to generate the target brightness of the first color sub-pixel 101 working in the second range L2, which is conducive to adjusting the number of light-emitting devices 20 to be lit according to the need of luminous brightness, thereby improving the use efficiency of multiple light-emitting devices 20 and improving the service life of multiple light-emitting devices 20.

[0044] Furthermore, if Figure 4As shown, in combination with the display panel 100 including the first working mode M1 and the second working mode M2, in the first working mode M1: when the brightness range of the first color sub-pixel 101 is within the first range L1, one of the first light-emitting device 201 and the second light-emitting device 202 of the three light-emitting devices 20 can be set to be illuminated; when the brightness range of the first color sub-pixel 101 is within the second range L2, the first light-emitting device 201 and the second light-emitting device 202 of the three light-emitting devices 20 can be set to be illuminated; in the first working mode M1, the third light-emitting device 203 in the first color sub-pixel 101 that is at least partially illuminated is not illuminated, which is beneficial to reduce the usage frequency of the third light-emitting device 203. In the second working mode M2: when the brightness range of the first color sub-pixel 101 is within the first range L1, one of the second light-emitting device 201 and the third light-emitting device 203 among the three light-emitting devices 20 can be set to be illuminated; when the brightness range of the first color sub-pixel 101 is within the second range L2, the second light-emitting device 202 and the third light-emitting device 203 among the three light-emitting devices 20 can be set to be illuminated; in the second working mode M1, the first light-emitting device 201 in the first color sub-pixel 101 that is at least partially illuminated is not illuminated, which is beneficial to reduce the usage frequency of the first light-emitting device 201.

[0045] In the embodiment of the present application, the number of light-emitting devices 20 lit in the sub-pixel 10 is adjusted to be different under different brightness ranges, which is conducive to more rational use of multiple light-emitting devices 20 for light-emitting work, improving the effect of the joint work of multiple light-emitting devices 20, and increasing the service life of the light-emitting device 20.

[0046] Figure 5 A schematic diagram of another working mode of a display panel provided in an embodiment of the present application, Figure 6 A schematic diagram of another working mode of a display panel provided in an embodiment of the present application.

[0047] In one embodiment of the present application, Figure 1 , Figure 5 As shown, in the first working mode M1, in combination with the above-mentioned embodiment, the first light emitting device 201 among the plurality of light emitting devices 20 has a higher priority to be lit. When the light emitting brightness of the first color sub-pixel 101 belongs to the first range L1, the first to x1-th light emitting devices 20 in the first color sub-pixel 101 emit light; when the light emitting brightness of the first color sub-pixel 101 belongs to the second range L2, the first to x2-th light emitting devices 20 in the first color sub-pixel 101 emit light.

[0048] Take grayscale to represent the luminous brightness of the first color sub-pixel 101 as an example. Optionally, the first range L1 is the luminous brightness range of the first color sub-pixel 101 when the grayscale is between 1-160, and the second range L2 is the luminous brightness range of the first color sub-pixel 101 when the grayscale is between 161-255. The maximum value of the first range L1 is less than or equal to the minimum value of the second range L2, which can indicate that the brightness of the first color sub-pixel 101 working in the first range L1 is less than the brightness of the first color sub-pixel 101 working in the second range L2.

[0049] For example, Figure 5 As shown, the first color sub-pixel 101 includes three light-emitting devices 20, and x1=2 and x2=3 are used as examples for explanation. At this time, when the luminous brightness of the first color sub-pixel 101 belongs to the first range L1, the first light-emitting device 201 and the second light-emitting device 202 in the first color sub-pixel 101 emit light; when the luminous brightness of the first color sub-pixel 101 belongs to the second range L2, the first to third light-emitting devices 20 in the first color sub-pixel 101 emit light. At this time, the priority of the light-emitting devices 20 being lit is in descending order from the first light-emitting device 201 to the nth light-emitting device 20n, and the nth light-emitting device 20n is lit less frequently. In summary, in the first working mode M1, the usage frequencies of the first light-emitting device 201 and the second light-emitting device 202 in the first color sub-pixel 101 are both 100%, and the usage frequency of the third light-emitting device 203 is 50%.

[0050] In the second working mode M2, when the luminous brightness of the first color sub-pixel 101 belongs to the first range L1, the (n-x1+1)th to nth light-emitting devices 20 in the first color sub-pixel 101 emit light; when the luminous brightness of the first color sub-pixel 101 belongs to the second range L2, the (n-x2+1)th to nth light-emitting devices 20 in the first color sub-pixel 101 emit light. When the n light-emitting devices 20 are waiting to be lit, the nth light-emitting device 20n has the highest priority, that is, the priority of the multiple light-emitting devices 20 being lit is reduced in the order of the nth light-emitting device 20n to the first light-emitting device 201.

[0051] For example, continue to refer to Figure 5As shown, the first color sub-pixel 101 includes three light-emitting devices 20, and x1=2 and x2=3 are used as examples for explanation. In the second working mode M2, when the luminous brightness of the first color sub-pixel 101 belongs to the first range L1, the third light-emitting device 203 and the second light-emitting device 202 in the first color sub-pixel 101 emit light; when the luminous brightness of the first color sub-pixel 101 belongs to the second range L2, the first to third light-emitting devices 20 in the first color sub-pixel 101 emit light. In summary, in the second working mode M2, the usage frequencies of the third light-emitting device 203 and the second light-emitting device 202 in the first color sub-pixel 101 are both 100%, and the usage frequency of the first light-emitting device 201 is 50%.

[0052] It should be noted that, in combination with actual usage, the range of the luminous brightness of the first color sub-pixel 101 can be further refined, and the number of light-emitting devices 20 lit in different ranges can be adjusted in combination with the number of light-emitting devices 20 prepared. Figure 6As shown, the luminous brightness of the first color sub-pixel 101 is represented by grayscale. Optionally, the first range L1 is the luminous brightness range of the first color sub-pixel 101 when the grayscale is between 1-80, the second range L2 is the luminous brightness range of the first color sub-pixel 101 when the grayscale is between 81-160, and the third range L3 is added to be the luminous brightness range of the first color sub-pixel 101 when the grayscale is between 161-255. Accordingly, taking the first color sub-pixel 101 including three light-emitting devices 20 as an example, one light-emitting device 20 needs to be lit in the first range L1, two light-emitting devices 20 need to be lit in the second range L2, and three light-emitting devices 20 need to be lit in the third range L3. Therefore, in combination with the first working mode M1, according to the priority of the multiple light-emitting devices 20 being selected to be lit, the first light-emitting device 201 in the first color sub-pixel 101 can be lit to emit light in the first range L1, the first light-emitting device 201 and the second light-emitting device 202 in the first color sub-pixel 101 can be lit in the second range L2, and the first light-emitting device 201, the second light-emitting device 202, and the third light-emitting device 203 in the first color sub-pixel 101 can be lit in the third range L3. The gray scale is used to further ensure that the service life of the multiple light-emitting devices 20 is equivalent. In combination with the second working mode M2, according to the priority of the plurality of light-emitting devices 20 being selected to be lit, the third light-emitting device 203 in the first color sub-pixel 101 can be lit to emit light in the first range L1, the third light-emitting device 201 and the second light-emitting device 202 in the first color sub-pixel 101 can be lit in the second range L2, and the first light-emitting device 201, the second light-emitting device 202, and the third light-emitting device 203 in the first color sub-pixel 101 can be lit in the third range L3. In summary, in the first working mode M1, the usage frequency of the first light-emitting device 201 in the first color sub-pixel 101 is 100%, the usage frequency of the second light-emitting device 201 is about 66.7%, and the usage frequency of the third light-emitting device 203 is about 33.3%. In the second working mode M2, the usage frequency of the third light emitting device 203 in the first color sub-pixel 101 is 100%, the usage frequency of the second light emitting device 201 is about 66.7%, and the usage frequency of the first light emitting device 201 is about 33.3%.This is conducive to more accurately adjusting the length of time that the multiple light-emitting devices 20 are used, and better extending the service life of the multiple light-emitting devices 20. In summary, in combination with the display panel 100 working in different modes, the order in which the multiple light-emitting devices 20 are preferentially lit is adjusted, and the number of light-emitting devices 20 that are lit when the first color sub-pixel 101 works in different brightness ranges is set to be different, so that the light-emitting time and usage frequency of different light-emitting devices 20 are basically the same, and the risk of a single light-emitting device 20 being used for a long time is reduced as much as possible, so that the life of different light-emitting devices 20 in the sub-pixel 10 is extended to a comparable degree, which is conducive to ensuring the light output effect of the first color sub-pixel 101.

[0053] In the embodiment of the present application, in combination with the display panel 100 working in different modes, the number of multiple light-emitting devices 20 that are illuminated is adjusted and certain light-emitting devices 20 are specified to be illuminated, and the number of light-emitting devices 20 that are illuminated when the first color sub-pixel 101 works in different brightness ranges is set to be different. This is beneficial to making the light-emitting time and usage frequency of different light-emitting devices 20 basically equivalent, reducing the risk of a single light-emitting device 20 being used for a long time as much as possible, and extending the life of different light-emitting devices 20 in the sub-pixel 10 to a similar extent, which is beneficial to ensuring the light-emitting effect of the first color sub-pixel 101; it is also beneficial to make the working process when the sub-pixel 10 includes multiple light-emitting devices 20 more orderly, and ensure the stable operation of the sub-pixel 10.

[0054] Figure 7 A schematic plan view of another display panel provided in an embodiment of the present application is shown in FIG. Figure 8 A schematic diagram of another working mode of a display panel provided in an embodiment of the present application.

[0055] In one embodiment of the present application, Figure 7 As shown, n>2 is set, that is, the number of light-emitting devices 20 included in one first color sub-pixel 101 exceeds two.

[0056] The display panel 100 further includes a third operation mode M3.

[0057] Among them, in the third working mode M3, the i-th light-emitting device 20i in any emitting first color sub-pixel 101 emits light, the first light-emitting device 201 in at least partially emitting first color sub-pixel 101 does not emit light and / or the n-th light-emitting device 20n in at least partially emitting first color sub-pixel 101 does not emit light. In combination with the above content, if the first light-emitting device 201 and the n-th light-emitting device 20n in the plurality of light-emitting devices 20 have a higher light-emitting frequency, it can be set to preferentially select the i-th light-emitting device 20i to be lit, 1<i<n.

[0058] For example, in combination Figure 7 , Figure 8 As shown, the first color sub-pixel 10 is provided with four light-emitting devices 20. In the third working mode M3, optionally, when the range of the luminous brightness of the first color sub-pixel 101 is represented by grayscale, the first range L1 is 1-80, the second range L2 is 81-160, and the third range L3 is 161-255 as an example:

[0059] When the first color sub-pixel 101 needs to light up a light-emitting device 20 within the first range L1, any light-emitting device 20 from the first light-emitting device 201 to the fourth light-emitting device 204 can be flexibly selected to emit light, for example, i=2, the second light-emitting device 202 is selected to emit light, and the first light-emitting device 201 and the fourth light-emitting device 204 are not to emit light, and n=4. At this time, the standard for selecting the light-emitting device 20 to be lit in the third working mode M3 can be which of the multiple light-emitting devices 20 have a lower usage frequency or a shorter cumulative lighting time, and can be used first.

[0060] Similarly, when two light-emitting devices 20 need to be lit in the second range L2 of the first color sub-pixel 101, any two light-emitting devices 20 from the first light-emitting device 201 to the fourth light-emitting device 204 can be flexibly selected to emit light, for example, when i=2, the second light-emitting device 202 is selected to emit light, and another light-emitting device 20 is selected from the remaining light-emitting devices 20 to emit light. At this time, different sub-pixels 10 can flexibly select another light-emitting device 20 to be lit according to the usage of the multiple light-emitting devices 20 included in themselves. For example, the second light-emitting device 202 in multiple first color sub-pixels 101 is all lit, but some of the first color sub-pixels 101 also include the first light-emitting device 201 to be lit, some of the first color sub-pixels 101 also include the third light-emitting device 203 to be lit, and some of the first color sub-pixels 101 also include the fourth light-emitting device 204 to be lit. Similarly, in addition to the second light emitting device 202 emitting light, when another light emitting device 20 is selected to be lit, another light emitting device 20 with a lower usage frequency and a shorter cumulative lighting time can be selected.

[0061] Similarly, when the first color sub-pixel 101 needs to light up three light-emitting devices 20 within the third range L3, any three light-emitting devices 20 from the first light-emitting device 201 to the fourth light-emitting device 204 can be flexibly selected to emit light, for example, when i=2, the second light-emitting device 202 is selected to emit light, and two light-emitting devices 20 are selected from the remaining light-emitting devices 20 to emit light. At this time, different sub-pixels 10 can flexibly select the other two light-emitting devices 20 to be lit according to the usage of the multiple light-emitting devices 20 included in themselves. For example, the second light-emitting device 202 in multiple first color sub-pixels 101 is all lit, but some of the first color sub-pixels 101 also include the first light-emitting device 201 and the third light-emitting device 203 to be lit, and some of the first color sub-pixels 101 also include the third light-emitting device 203 and the fourth light-emitting device 204 to be lit. Similarly, in addition to the second light emitting device 202 emitting light, when selecting another two light emitting devices 20 to be lit, another two light emitting devices 20 with a lower usage frequency and a shorter cumulative lighting time can be selected.

[0062] Of course, in the examples given in the embodiments of the present application, i in the first range L1, the second range L2, and the third range L3 are all equal to 2, and the second light-emitting device 202 is lit multiple times, which is only an example. In some other embodiments, different light-emitting devices 20 can be selected in the first range L1, the second range L2, and the third range L3 to be the light-emitting devices 20 that emit light in any light-emitting first color sub-pixel 101.

[0063] In combination with the above, when it is necessary to flexibly select the light-emitting device to be lit in the third mode M3, the display panel 100 may be provided to further include a control chip 200. Optionally, the control chip 200 may be electrically connected to one electrode of the light-emitting device 20, or electrically connected to at least one of the scanning signal, light-emitting control signal, and clock signal used to control the pixel circuit to generate a light-emitting driving current to drive the light-emitting device 20 to emit light, so that the control chip 200 can obtain the operating frequency and cumulative light-emitting duration of different light-emitting devices 20 by monitoring these signals, thereby flexibly selecting the light-emitting device 20 to be lit.

[0064] In an embodiment of the present application, the display panel 100 is provided to also include a third operating mode M3, and in the third operating mode M3, the light-emitting devices 20 with a lower frequency of use can be flexibly and selectively illuminated according to the frequency of use of the multiple light-emitting devices 20, such as reducing the frequency of use of the first light-emitting device 20 and the nth light-emitting device 20n, so that the use time of the multiple light-emitting devices 20 is more balanced and the extended service life is more similar.

[0065] In one embodiment of the present application, continue to refer to Figure 4-Figure 6 , Figure 8As shown, when displaying a frame of picture, the first color sub-pixel 101 includes x3 light-emitting devices 20 and x3 light-emitting devices 20 start to emit light at the same time; n≥x3>1, which is conducive to using multiple light-emitting devices 20 to work together to obtain the target brightness required by the first color sub-pixel 101, so that each light-emitting device 20 needs to generate the risk of high brightness, reduce the light-emitting pressure of a single light-emitting device 20, reduce the degree of working loss of a single light-emitting device 20 when emitting light, and increase the service life of the light-emitting device.

[0066] Fig. 9 A schematic diagram of another working mode of a display panel provided in an embodiment of the present application.

[0067] In one embodiment of the present application, Figure 1 , Figure 2 , Fig. 9 As shown, when displaying a frame in the first working mode M1, the first color sub-pixel 101 includes x3 emitting light-emitting devices 20, and the 1st to x3th emitting light-emitting devices 20 in the first color sub-pixel 101 start to emit light in sequence; n≥x3>1. Fig. 9 As shown, taking the first color sub-pixel 101 including three light-emitting devices 20, x3=3 as an example, at this time, the display panel 100 works in one frame, and the multiple light-emitting devices 20 start to emit light in sequence in the following pattern: the first light-emitting device 201 in the first color sub-pixel 101 first emits light for a period of time, then the first light-emitting device 201 turns off the light of the second light-emitting device 202, then the second light-emitting device 202 turns off the light of the third light-emitting device 203, then the third light-emitting device 203 turns off the light of the first light-emitting device 201...; in this way, it is beneficial to make the multiple light-emitting devices 20 operate alternately, thereby ensuring that the use time of the multiple light-emitting devices 20 is more balanced, and the extended service life of the multiple light-emitting devices 20 is similar.

[0068] In addition, when a frame of picture is displayed in the second working mode M2, the first color sub-pixel 101 includes x3 emitting light-emitting devices 20, and the nth to (n-x3+1)th emitting light-emitting devices 20 in the first color sub-pixel 101 start to emit light in sequence. Similar to the first working mode M1, taking the first color sub-pixel 101 including three emitting light-emitting devices 20 as an example, at this time, the display panel 100 works in a frame of picture, and the rule that the multiple light-emitting devices 20 start to emit light in sequence is: the third light-emitting device 203 in the first color sub-pixel 101 first emits light for a period of time, then the third light-emitting device 203 turns off the light of the second light-emitting device 202, then the second light-emitting device 202 turns off the light of the first light-emitting device 201, then the first light-emitting device 201 turns off the light of the third light-emitting device 203...; in this way, it is beneficial to make the multiple light-emitting devices 20 operate alternately, so as to ensure that the use time of the multiple light-emitting devices 20 is more balanced, and the extended life of the multiple light-emitting devices 20 is similar.

[0069] Optionally, the first light emitting device 201 , the second light emitting device 202 , and the third light emitting device 203 are preset to emit light for the same time.

[0070] In combination with the above content, the order in which the multiple light-emitting devices 20 of the display panel 100 are turned on in sequence in the first working mode M1 and the second working mode M2, in the first working mode M1: when the three light-emitting devices 20 are turned on in sequence for a period of time and then turned off, since the first light-emitting device 201 first emits light for a period of time, followed by the second light-emitting device 202 to the third light-emitting device 203 emit light in sequence, and since the light-emitting stage has a certain duration, there may be a situation in a light-emitting stage: the third light-emitting device 203 that is ranked last has not started working, or the third light-emitting device 203 that is ranked last has emitted light less times than the other two light-emitting devices 20. In the long run, it is easy for the first light-emitting device 201 to be used the most times, which is not conducive to extending the lifespan of multiple light-emitting devices 20.

[0071] Therefore, the embodiment of the present application also proposes that under the second working mode M2, the nth to (n-x3+1)th light-emitting devices 20 are set to start emitting light in sequence. For example, the third light-emitting device 203 to the first light-emitting device emit light in sequence. In this way, the light-emitting work of the first light-emitting device 201 is switched to the end, which is beneficial to reduce the frequency of use of the first light-emitting device 201, and adjust the frequency of use of the third light-emitting device 203 to a level similar to the frequency of use of the first light-emitting device 201, which is beneficial to comprehensively compensate for the service life of multiple light-emitting devices 20 and improve the working stability of the sub-pixel 10.

[0072] Fig.10A schematic diagram of a pixel circuit provided in an embodiment of the present application.

[0073] In one embodiment of the present application, Fig.10 As shown, the pixel circuit 30 can be used to generate a light-emitting driving current and transmit the current to the light-emitting device 20 so that the light-emitting device 20 emits light. The first to nth light-emitting devices 20 in the first color sub-pixel 101 are arranged in parallel, which is conducive to allowing the light-emitting driving current to flow to different branches where different light-emitting devices 20 are located. Optionally, the multiple light-emitting devices 20 in the same first color sub-pixel 101 are of the same model.

[0074] In the embodiment of the present application, the first to nth light-emitting devices 20 in the first color sub-pixel 101 are connected in parallel, which is beneficial to realize time-sharing control of multiple first to nth light-emitting devices 20, and is beneficial to realize selective opening of multiple light-emitting devices 20 to better adjust the number of times and duration of use of multiple light-emitting devices 20, thereby achieving the purpose of better extending the service life of the light-emitting devices 20.

[0075] In one embodiment of the present application, continue to refer to Fig.10 As shown, the first color sub-pixel further includes n control switches 40 , and the n control switches 40 are respectively connected in series with the n light-emitting devices 20 .

[0076] The first color sub-pixel 101 further includes a pixel circuit 30, and the pixel circuit 30 includes a driving transistor Md. The driving transistor Md is used to provide a light-emitting current to the light-emitting device 20 connected in series with the control switch 40 when the control switch 40 is turned on. In the pixel circuit 30, the driving transistor Md can generate a light-emitting driving current in the light-emitting stage, which is transmitted to multiple light-emitting devices 20 through the light-emitting control module 301. However, since different light-emitting devices 20 are electrically connected to different control switches 40, when a certain control switch 40 is not connected, the path between the pixel circuit 30 and the corresponding light-emitting device 20 cannot be connected, and the light-emitting device 20 cannot receive the light-emitting driving current.

[0077] In the embodiment of the present application, the control ends of n control switches 40 are electrically connected to n different control signal lines SLn respectively. Fig.10As shown, the pixel circuit 30 is electrically connected to three parallel light-emitting devices 20, then the control end 401 of the control switch 40 to which the first light-emitting device 201 is electrically connected is electrically connected to the first control signal line SL1; the control end 401 of the control switch 40 to which the second light-emitting device 202 is electrically connected is electrically connected to the second control signal line SL2; the control end 401 of the control switch 40 to which the third light-emitting device 203 is electrically connected is electrically connected to the third control signal line SL3, which is beneficial for ensuring that the multiple light-emitting devices 20 are respectively controlled by different control switches 40 to receive the light-emitting drive current, is beneficial for realizing time-sharing control of the multiple light-emitting devices 20, and is beneficial for ensuring that the working modes of the multiple light-emitting devices 20 operate accurately.

[0078] Fig.11 A schematic diagram of another pixel circuit provided in an embodiment of the present application.

[0079] In one embodiment of the present application, continue to refer to Fig.10 As shown, n control switches 40 are respectively connected in series between n light-emitting devices 20 and the output terminal 302 of the pixel circuit 30. In the embodiment of the present application, n=3 is used as an example for explanation. Optionally, the output terminal 302 of the pixel circuit 30 is the same as the output terminal of the light-emitting control module 301, and the light-emitting driving current is output from the output terminal 302, which is conducive to ensuring that the light-emitting driving current must pass through the control switch 40 when flowing to the light-emitting device 20, and is conducive to ensuring that the light-emitting device 20 can stably switch between starting to emit light and stopping to emit light through the control switch 40.

[0080] Or, if Fig.11 As shown, n light-emitting devices 20 are respectively connected in series between n control switches 40 and the output terminal 302 of the pixel circuit 30. The pixel circuit 30 also includes a power supply voltage writing module 303. The power supply voltage writing module 303 can be used to turn on and receive the first power supply voltage PVDD after receiving a valid light-emitting control signal Emit during the light-emitting stage. The power supply voltage writing module 303 transmits the first power supply voltage PVDD to the driving transistor Md, thereby driving the driving transistor Md to generate a light-emitting driving current. The key to whether the pixel circuit 30 can be turned on to generate a light-emitting driving current also lies in whether the pixel circuit 20 has a conductive path, that is, whether the first power supply voltage PVDD and the second power supply voltage PVEE are fully connected. Optionally, the first power supply voltage PVDD and the second power supply voltage PVEE are respectively an anode and a cathode. Usually, the second power supply voltage PVEE is electrically connected at the end of the light-emitting driving current to release the charge.

[0081] So, if Fig.11As shown, the light-emitting driving current can flow from the output terminal 302 to the light-emitting device 20 first and then to the control switch 40, and finally to the second power supply voltage PVEE terminal. In this process, when a certain control switch 40 is not connected, no path is formed between the first power supply voltage PVDD and the second power supply voltage PVEE electrically connected to the pixel circuit 30 in the branch where the control switch 40 is located, and the light-emitting driving current will not flow to the branch, so that the light-emitting device 20 in this branch can be controlled. In the embodiment of the present application, the light-emitting driving current is set to flow to the light-emitting device 20 first and then to the control switch 40, which is conducive to preventing the light-emitting device 20 from receiving a more accurate light-emitting driving current when the branch where the light-emitting device 20 is located is turned on, and avoiding the decrease in the accuracy of the light-emitting driving current due to factors such as device and wiring impedance when the light-emitting driving current first flows to the control switch 40.

[0082] In addition, combined Fig.10 , Fig.11 As shown, the pixel circuit 30 also includes a data voltage writing module 304, a threshold voltage compensation module 305, a first reset module 306, and a second reset module 307; wherein the data voltage writing module 304 is used to transmit the data voltage Vdata to the driving transistor Md before the light-emitting stage, and the data voltage Vdata can be used to adjust the size of the light-emitting driving current generated by the driving transistor Md; the threshold voltage compensation module 305 can be used to compensate the threshold voltage of the driving transistor Md to the gate of the driving transistor Md, thereby ensuring the accuracy of the light-emitting driving current generated by the driving transistor Md; the first reset module 306 can be used to reset the gate potential of the driving transistor Md using the reset voltage Vref; the second reset module 307 can be used to reset the light-emitting device 20 using the reset voltage Vref, thereby ensuring the accuracy of the light-emitting brightness of the light-emitting device 20.

[0083] Fig.12 A schematic plan view of another display panel provided in an embodiment of the present application.

[0084] In one embodiment of the present application, Fig.12 As shown, the plurality of sub-pixels 10 include a second color sub-pixel 102; the second color sub-pixel 102 includes the first to mth light-emitting devices 20, where m≥2. That is, a plurality of light-emitting devices 20 are also provided in the second color sub-pixel 102, which is conducive to using a plurality of light-emitting devices 20 to achieve the target brightness of the second color sub-pixel 102, reducing the light-emitting working pressure of a single light-emitting device 20, thereby effectively improving the service life of the light-emitting device 20.

[0085] The operating modes of the display panel 100 include a first operating mode M1 and a second operating mode M2, wherein in the first operating mode M1, the first light-emitting device 201 in any second-color sub-pixel 102 that emits light all emits light and the m-th light-emitting device 20m in at least partially emitting second-color sub-pixel 102 does not emit light; in the second operating mode M2, the m-th light-emitting device 20m in any second-color sub-pixel that emits light all emits light and the first light-emitting device 201 in at least partially emitting second-color sub-pixel 102 does not emit light.

[0086] Similar to the first color sub-pixel 101, in different working modes of the display panel 100, the priority of selecting and lighting up multiple light-emitting devices 20 in the second color sub-pixel 102 is swapped, which is beneficial to avoid the situation where the first color sub-pixel 101 always selects the first light-emitting device 201 or the m-th light-emitting device 20m to emit light multiple times when one or more light-emitting devices 20 need to be lit to emit light, thereby reducing the frequency of use of the first light-emitting device 201 or the m-th light-emitting device 20n, which is beneficial to ensure that the service life of the multiple light-emitting devices 20 is relatively equal and the display effect is similar.

[0087] In the embodiment of the present application, the display panel 100 further includes a second color sub-pixel 102, and the multiple light-emitting devices 20 of the first color sub-pixel 101 and the second color sub-pixel 102 can all work in the first working mode M1 and the second working mode M2. When the display panel 100 can switch between the first working mode M1 and the second working mode M2, the use of the first light-emitting device 201 and the mth light-emitting device 20m is also switched, so that the use frequency of the first light-emitting device 201 and the mth light-emitting device 20m is more balanced, thereby further improving the service life of each light-emitting device 20 in the second color sub-pixel 102, and also facilitating the multiple light-emitting devices 20 to maintain a good use effect.

[0088] In one embodiment of the present application, continue to refer to Fig.12 As shown, setting m=n, that is, the number of light-emitting devices 20 included in a first color sub-pixel 101 is equal to the number of light-emitting devices 20 included in a second color sub-pixel 102, which is conducive to reducing the difficulty of preparing multiple light-emitting devices 20 in the sub-pixel 10 and improving the preparation efficiency of the display panel 100; and it is conducive to making the light-emitting devices 20 distributed on the display panel 100 more uniform, reducing the wiring impedance difference at various positions of the display panel 100, and improving the uniformity of the display panel 100 when working, and is also conducive to extending the service life of the first color sub-pixel 101 and the second color sub-pixel 102 more evenly.

[0089] Fig.13A schematic plan view of another display panel provided in an embodiment of the present application.

[0090] In one embodiment of the present application, Fig.13 As shown, m is set to be less than n, that is, the number of light-emitting devices 20 prepared in a second color sub-pixel 102 is less than the number of light-emitting devices 20 prepared in a first color sub-pixel 101. Different numbers of light-emitting devices 20 can be prepared according to different luminous brightness requirements of the first color sub-pixel 101 and the second color sub-pixel 102, thereby reducing the preparation cost of the light-emitting device 20 and improving the applicability of the embodiments of the present application.

[0091] Of course, in some other implementations, the number of light-emitting devices 20 prepared in the first color sub-pixel 101 may be set to be less than the number of light-emitting devices 20 prepared in the second color sub-pixel 102 .

[0092] In one embodiment of the present application, continue to refer to Fig.13 As shown, the first color sub-pixel 101 is a blue sub-pixel, and the second color sub-pixel 102 is a red sub-pixel or a green sub-pixel. Among the light emitted by the sub-pixels 10 of different colors, the human eye is less sensitive to blue light, and the intensity of the blue light emitted by the display panel 100 is usually larger. The human eye is more sensitive to green light and red light, and the intensity of the red light and green light emitted in the display panel 100 is usually smaller to adapt to the visual effect when the human eye views the display panel 100. Therefore, when preparing the light-emitting device 20 in the first color sub-pixel 101, the number of prepared light-emitting devices 20 can be adaptively increased to meet the demand for blue light emission of the display panel 100, and it is also beneficial to use a larger number of light-emitting devices 20 to meet the demand for blue light emission, thereby reducing the difficulty of a single light-emitting device 20 to meet the blue demand, and then increasing the service life of multiple light-emitting devices 20. Similarly, if the luminous intensity of red light and green light in the display panel 100 is relatively small, the luminous difficulty of a single light-emitting device 20 is also relatively low, and a smaller number of light-emitting devices 20 can be adaptively prepared in the second color sub-pixel 102 .

[0093] Fig.14 A schematic plan view of another display panel provided in an embodiment of the present application.

[0094] The present application embodiment provides a control chip 200, such as Fig.14 As shown, the control chip 200 is used to drive the display panel 100 of any one of the above embodiments to emit light.

[0095] In the embodiment of the present application, the display panel 100 is further provided with a control chip 200. Optionally, the control chip 200 may be electrically connected to one electrode of the light-emitting device 20, or electrically connected to at least one of the scanning signal, the light-emitting control signal, and the clock signal used to control the pixel circuit to generate a light-emitting driving current to drive the light-emitting device 20 to emit light, so that the control chip 200 can obtain the operating frequency and the accumulated light-emitting duration of different light-emitting devices 20 by monitoring these signals, thereby flexibly selecting the light-emitting device 20 to be lit.

[0096] Fig.15 A schematic diagram of a display device provided in an embodiment of the present application.

[0097] The present application embodiment provides a display device 300, such as Fig.15 As shown, the display device 300 includes the display panel 100 as in any one of the above embodiments. Optionally, the display device 300 may be a device for display such as a television, a computer, a mobile phone, a camera, etc.

[0098] In the display device 300, a plurality of light-emitting devices 20 are arranged in the sub-pixel 10 in the display panel 100, and a single or multiple light-emitting devices 20 can be flexibly controlled to emit light, which is conducive to ensuring that the frequency of lighting up the plurality of light-emitting devices 20 in the sub-pixel 10 is more uniform, and further improving the service life of the light-emitting devices 20. In addition, the display panel 100 is arranged to include a first working mode M1 and a second working mode M2, and the display panel 100 can switch between the first working mode M1 and the second working mode M2, so that the use frequency of the first light-emitting device 201 and the nth light-emitting device 20n is more balanced, thereby further improving the service life of each light-emitting device 20 in the first color sub-pixel 101, and is also conducive to ensuring that the plurality of light-emitting devices 20 maintain a good use effect.

[0099] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A display panel, characterized in that: The method comprises a plurality of sub-pixels, wherein the plurality of sub-pixels comprises a first color sub-pixel; the first color sub-pixel comprises a 1st to an nth light-emitting device, where n≥2; The working mode of the display panel includes a first working mode and a second working mode; Among them, in the first operating mode, the first light-emitting device in any luminous first color sub-pixel emits light and the nth light-emitting device in at least partially luminous first color sub-pixel does not emit light; in the second operating mode, the nth light-emitting device in any luminous first color sub-pixel emits light and the first light-emitting device in at least partially luminous first color sub-pixel does not emit light.

2. The display panel according to claim 1, characterized in that: When the luminous brightness of the first color sub-pixel belongs to the first range, the first color sub-pixel includes x1 luminous light-emitting devices; when the luminous brightness of the first color sub-pixel belongs to the second range, the first color sub-pixel includes x2 luminous light-emitting devices; wherein the maximum value of the first range is less than or equal to the minimum value of the second range, and x1 is less than x2.

3. The display panel according to claim 1 or 2, characterized in that: In the first operating mode, when the luminance of the first color sub-pixel is within the first range, the first to x1-th light-emitting devices in the first color sub-pixel emit light; when the luminance of the first color sub-pixel is within the second range, the first to x2-th light-emitting devices in the first color sub-pixel emit light; In the second operating mode, when the luminous brightness of the first color sub-pixel belongs to the first range, the (n-x1+1)th to nth light-emitting devices in the first color sub-pixel emit light; when the luminous brightness of the first color sub-pixel belongs to the second range, the (n-x2+1)th to nth light-emitting devices in the first color sub-pixel emit light.

4. The display panel according to claim 3, characterized in that: n>2; the display panel also includes a third working mode; Among them, in the third operating mode, the i-th light-emitting device in any luminous first color sub-pixel emits light, the first light-emitting device in at least partially luminous first color sub-pixel does not emit light and / or the n-th light-emitting device in at least partially luminous first color sub-pixel does not emit light.

5. The display panel according to claim 1, characterized in that: When displaying a frame of picture, the first color sub-pixel includes x3 light-emitting devices, and the x3 light-emitting devices start to emit light at the same time; n≥x3>1.

6. The display panel according to claim 1, characterized in that: When displaying a frame in the first working mode, the first color sub-pixel includes x3 emitting light-emitting devices, and the 1st to x3th emitting light-emitting devices in the first color sub-pixel start to emit light in sequence; n≥x3>1; When displaying a frame of picture in the second working mode, the first color sub-pixel includes x3 light-emitting devices, and the (n-x3+1)th to nth light-emitting devices in the first color sub-pixel start to emit light in sequence.

7. The display panel according to claim 1, characterized in that: The first to nth light emitting devices in the first color sub-pixel are connected in parallel.

8. The display panel according to claim 7, characterized in that: The first color sub-pixel further includes: n control switches, wherein the n control switches are respectively connected in series with the n light-emitting devices; A pixel circuit, the pixel circuit comprising a driving transistor; the driving transistor is used to provide a light-emitting current to a light-emitting device connected in series with the control switch when the control switch is turned on; Wherein, the control ends of the n control switches are electrically connected to n different control signal lines respectively.

9. The display panel according to claim 8, characterized in that: The n control switches are respectively connected in series between the n light-emitting devices and the output end of the pixel circuit, or the n light-emitting devices are respectively connected in series between the n control switches and the output end of the pixel circuit.

10. The display panel according to claim 1, characterized in that: The plurality of sub-pixels include a second color sub-pixel; the second color sub-pixel includes the first to mth light-emitting devices, m≥2; The working mode of the display panel includes a first working mode and a second working mode. Among them, in the first operating mode, the first light-emitting device in any luminous second color sub-pixel emits light and the m-th light-emitting device in at least partially luminous second color sub-pixel does not emit light; in the second operating mode, the m-th light-emitting device in any luminous second color sub-pixel emits light and the first light-emitting device in at least partially luminous second color sub-pixel does not emit light.

11. The display panel according to claim 10, characterized in that: m=n.

12. The display panel according to claim 10, characterized in that: m<n.

13. The display panel according to claim 12, characterized in that: The first color sub-pixel is a blue sub-pixel, and the second color sub-pixel is a red sub-pixel or a green sub-pixel.

14. A control chip, characterized in that: Used to drive the display panel as described in any one of claims 1-13 to emit light.

15. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 13.

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