Display panel, display device and driving method thereof

Abstract

The invention relates to a display panel, a display device and a driving method thereof. The display panel includes: a substrate; the plurality of sub-pixels are located on one side of the substrate, and the plurality of sub-pixels comprise a plurality of first color sub-pixels and a plurality of second color sub-pixels; wherein the first color sub-pixel comprises at least two first color light-emitting diodes, and the at least two first color light-emitting diodes of the first color sub-pixel comprise a first sub-light-emitting diode and a second sub-light-emitting diode; the light-emitting area of the first sub light-emitting diode is smaller than that of the second sub light-emitting diode; the second color sub-pixel comprises at least one second color light-emitting diode, and the first color light-emitting diode and the second color light-emitting diode are light-emitting diodes with different colors. The problem of color cast of the display panel under a high-temperature condition can be solved.

Description

Technical Field

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

[0002] Micro-component technology refers to the high-density integration of micro-sized component arrays on a substrate. As an emerging display technology, micro-component display has many advantages over liquid crystal display (LCD) and organic light-emitting diode (OLED) display, such as lower power consumption, higher color gamut, faster response rate, etc., and does not require high water and oxygen isolation in packaging. Therefore, mini light-emitting diodes (Mini LED) and micro light-emitting diodes (MicroLED) are regarded as a display technology with great development prospects.

[0003] However, the display panel in the related art has the problem of color shift under high temperature conditions. Summary of the invention

[0004] Based on this, it is necessary to provide a display panel, a display device and a driving method thereof, aiming to solve the problem of color shift of the display panel under high temperature conditions in the related art.

[0005] In a first aspect, an embodiment of the present application provides a display panel, including:

[0006] substrate;

[0007] A plurality of sub-pixels are located on one side of the substrate, wherein the plurality of sub-pixels include a plurality of first color sub-pixels and a plurality of second color sub-pixels;

[0008] The first color sub-pixel includes at least two first color light-emitting diodes, the at least two first color light-emitting diodes of the first color sub-pixel include a first sub-light-emitting diode and a second sub-light-emitting diode, and the light-emitting area of ​​the first sub-light-emitting diode is smaller than the light-emitting area of ​​the second sub-light-emitting diode;

[0009] The second color sub-pixel includes at least one second color light emitting diode, and the first color light emitting diode and the second color light emitting diode are light emitting diodes of different colors.

[0010] In a second aspect, an embodiment of the present application further provides a display device, which includes the display panel provided in the first aspect.

[0011] In a third aspect, an embodiment of the present application further provides a method for driving a display device, for driving the display device provided in the second aspect, the method for driving the display device comprising:

[0012] Acquiring the temperature of the display panel;

[0013] Under the condition that the temperature of the display panel is lower than a preset critical temperature, driving the first sub-light emitting diode in the first color sub-pixel to emit light;

[0014] Under the condition that the temperature of the display panel is greater than a preset critical temperature, the second sub-light emitting diode in the first color sub-pixel is driven to emit light.

[0015] In the embodiment of the present application, two LEDs with different light-emitting areas are set for the first color LED whose light-emitting efficiency is seriously attenuated with the increase of temperature. The first sub-LED with a smaller light-emitting area can be displayed at a lower temperature such as room temperature. At this time, the first sub-LED with a smaller light-emitting area can match the brightness of other color LEDs, so that the color coordinates of the white screen are normal. The second sub-LED with a larger light-emitting area can be displayed at a higher temperature. At this time, even if the light-emitting efficiency of the second sub-LED with a larger light-emitting area is seriously attenuated at high temperature, since the light-emitting area of ​​the second sub-LED is increased in advance, the second sub-LED with a larger light-emitting area whose light-emitting efficiency is seriously attenuated can also match the brightness of other color LEDs, so that the color coordinates of the white screen are normal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are 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 creative work.

[0017] Figure 1 A schematic diagram of a cross-sectional structure of a display panel provided in some embodiments of the present application.

[0018] Figure 2 A first partial top view schematic diagram of a display panel provided in some embodiments of the present application.

[0019] Figure 3 A second partial top view schematic diagram of a display panel provided in some embodiments of the present application.

[0020] Figure 4 A third partial top view schematic diagram of a display panel provided in some embodiments of the present application.

[0021] Figure 5 A fourth partial top view schematic diagram of a display panel provided in some embodiments of the present application.

[0022] Figure 6 A schematic diagram of a display device provided in some embodiments of the present application.

[0023] Figure 7 A schematic diagram of the process steps of a driving method for a display device provided in some embodiments of the present application.

[0024] Figure 8 A schematic diagram of a driving process of a driving method for a display device provided in some embodiments of the present application.

[0025] Description of reference numerals:

[0026] Display panel 100; display device 200; substrate 11; second film layer 12; first film layer 13; adhesive layer 14; cover plate 15;

[0027] sub-pixel SP; first color sub-pixel SP1; second color sub-pixel SP2; third color sub-pixel SP3; first color light emitting diode 21; first sub-light emitting diode 21a; second sub-light emitting diode 21b; second color light emitting diode 22; third color light emitting diode 23;

[0028] Temperature sensor 30 ; driving chip 70 ; selecting driving circuit 81 ; first sub-driving circuit 91 ; second sub-driving circuit 92 . DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0031] When describing positional relationships, unless otherwise specified, when an element such as a layer, film, or substrate is referred to as being "on" another element, it can be directly on the other element or there may be intervening elements. Further, when a layer is referred to as being "under" another layer, it can be directly under or there may be one or more intervening elements. It is also understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers or there may be one or more intervening elements.

[0032] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be construed as being one in number.

[0033] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present application.

[0034] It should also be understood that when interpreting an element, even if not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of the specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" can mean within one or more standard deviations, which are not limited here.

[0035] Furthermore, in the specification, the phrase “planar distribution schematic diagram” refers to a drawing when a target portion is viewed from above, and the phrase “cross-sectional schematic diagram” refers to a drawing when a section taken by vertically cutting the target portion is viewed from the side.

[0036] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0037] In the related art, the display panel has the problem of color shift under high temperature conditions. The inventors found that the reason for the above phenomenon is that the temperature light efficiency characteristics (luminous efficiency characteristics according to temperature) of light-emitting diodes of different colors are different, especially the luminous efficiency of red light-emitting diodes decays much more with the increase of temperature than that of green light-emitting diodes and blue light-emitting diodes, which causes the color coordinates of the white screen to shift (color shift or color cast problem). For example, the proportion of red light in the white screen decreases, resulting in the problem of blueness of the white screen. The color shift problem is more serious in high-brightness products.

[0038] Based on the above technical problems, the inventors have found that for a light-emitting diode of a color whose luminous efficiency is severely attenuated as the temperature rises, two light-emitting diodes with different luminous areas can be set. The light-emitting diode with a smaller luminous area can be displayed at a lower temperature such as room temperature. At this time, the light-emitting diode with a smaller luminous area can match the brightness of the light-emitting diodes of other colors, so that the color coordinates of the white screen are normal. The light-emitting diode with a larger luminous area can be displayed at a higher temperature. At this time, even if the luminous efficiency of the light-emitting diode with a larger luminous area is severely attenuated at high temperature, since the luminous area of ​​the light-emitting diode is increased in advance, the light-emitting diode with a larger luminous area whose luminous efficiency is severely attenuated can also be matched with the brightness of the light-emitting diodes of other colors, so that the color coordinates of the white screen are normal.

[0039] The above is the core idea of ​​this application. The technical solutions in the embodiments of this application will be described clearly and completely below in conjunction with the drawings in the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] See also Figures 1 to 5 , Figure 1 A schematic diagram of a cross-sectional structure of a display panel provided in some embodiments of the present application; Figure 2 A first partial top view schematic diagram of a display panel provided in some embodiments of the present application; Figure 3 A second partial top view schematic diagram of a display panel provided in some embodiments of the present application; Figure 4 A third partial top view schematic diagram of a display panel provided in some embodiments of the present application; Figure 5 A fourth partial top view schematic diagram of a display panel provided in some embodiments of the present application.

[0041] First, see Figures 1 to 5 The present application provides a display panel 100, which includes a substrate 11 and a plurality of sub-pixels SP; the plurality of sub-pixels SP are located on one side of the substrate 11, and the plurality of sub-pixels SP include a plurality of first color sub-pixels SP1 and a plurality of second color sub-pixels SP2; wherein the first color sub-pixel SP1 includes at least two first color light-emitting diodes 21, and the at least two first color light-emitting diodes 21 of the first color sub-pixel SP1 include a first sub-light-emitting diode 21a and a second sub-light-emitting diode 21b, and a light-emitting area of ​​the first sub-light-emitting diode 21a is smaller than a light-emitting area of ​​the second sub-light-emitting diode 21b; the second color sub-pixel SP2 includes at least one second color light-emitting diode 22, and the first color light-emitting diode 21 and the second color light-emitting diode 22 are light-emitting diodes 20 of different colors.

[0042] For example, Figure 1 As shown, in the cross-sectional structure of the display panel 100, the display panel 100 includes a plurality of light-emitting diodes 20 located on one side of a substrate 11, the plurality of light-emitting diodes 20 may include light-emitting diodes of different colors, and the light-emitting diodes 20 are electrically connected to a driving circuit on one side of the substrate 11 or in the substrate 11 through a pad terminal 201.

[0043] For example, the light-emitting diode 20 may be a mini light-emitting diode (Mini Light-Emitting Diode, Mini LED) or a micro light-emitting diode (Micro Light-Emitting Diode, MicroLED), which is not limited here.

[0044] For example, Figure 1 As shown, the display panel 100 includes a first film layer 13, which is at least partially located on the light-emitting diode 20, and is an insulating layer. The first film layer 13 may be an organic film layer, and the first film layer 13 may provide good coverage for the top surface and side surface of the light-emitting diode 20 to fill the gap between adjacent light-emitting diodes 20. The first film layer 13 is a glue layer, which may be an OC.

[0045] For example, the display panel 100 further includes an adhesive layer 14 and a cover plate 15. The adhesive layer 14 is located on the side of the first film layer 13 away from the light-emitting diode 20, and the cover plate 15 is located on the side of the adhesive layer 14 away from the light-emitting diode 20, or can be located on the top surface of the display panel 100. The adhesive layer 14 can be OCA or can include packaging glue.

[0046] For example, the display panel 100 also includes a second film layer 12, which fills the gaps between adjacent light-emitting diodes 20. The second film layer 12 may be black. The second film layer 12 can prevent light from being emitted from a side of the substrate 11 away from the cover plate 15. The second film layer 12 can reduce light reflection.

[0047] For example, the luminous efficiency of the first color LED 21 is severely attenuated with the increase of temperature, and the attenuation of the luminous efficiency of the first color LED 21 with the increase of temperature is greater than the attenuation of the luminous efficiency of the second color LED 22 with the increase of temperature. Therefore, the first color sub-pixel SP1 is set to include at least two first color LEDs 21, and the at least two first color LEDs 21 of the first color sub-pixel SP1 include a first sub-LED 21a and a second sub-LED 21b, and the luminous area of ​​the first sub-LED 21a is smaller than the luminous area of ​​the second sub-LED 21b.

[0048] For example, the first sub-LED 21 a and the second sub-LED 21 b may emit light under different temperature conditions.

[0049] It should be noted that the first color sub-pixel SP1 may include one or more first sub-light emitting diodes 21 a , and the first color sub-pixel SP1 may also include one or more second sub-light emitting diodes 21 b .

[0050] In the embodiment of the present application, two light-emitting diodes with different light-emitting areas are set for the first color light-emitting diode 21 whose light-emitting efficiency is seriously attenuated with the increase of temperature. The first sub-light-emitting diode 21a with a smaller light-emitting area can be displayed at a lower temperature such as room temperature. At this time, the first sub-light-emitting diode 21a with a smaller light-emitting area can match the brightness of other color light-emitting diodes, so that the color coordinates of the white screen are normal. The second sub-light-emitting diode 21b with a larger light-emitting area can be displayed at a higher temperature. At this time, even if the light-emitting efficiency of the second sub-light-emitting diode 21b with a larger light-emitting area is seriously attenuated at high temperature, since the light-emitting area of ​​the second sub-light-emitting diode 21b is increased in advance, the second sub-light-emitting diode 21b with a larger light-emitting area whose light-emitting efficiency is seriously attenuated can also match the brightness of other color light-emitting diodes, so that the color coordinates of the white screen are normal.

[0051] In some embodiments, the first sub-LED 21 a and the second sub-LED 21 b are configured to emit light under different temperature conditions of the display panel 100 .

[0052] For example, the second sub-LED 21b has a larger light-emitting area. Under higher temperature conditions (greater than or equal to a preset critical temperature), at least the second sub-LED 21b emits light, thereby compensating for the severe attenuation of the light-emitting efficiency of the first color LED 21 caused by the temperature increase, thereby improving or avoiding the color cast phenomenon.

[0053] In some embodiments, the cold-to-hot ratio of the first color LED 21 is smaller than that of the second color LED 22 ; and the light emitting area of ​​the second sub-LED 21 b is larger than that of the second color LED 22 .

[0054] For example, when an LED is lit at different temperatures, the ratio of the luminous flux of the LED under stable working conditions to the luminous flux of the LED when it is lit at room temperature is called the cold-to-hot ratio. The so-called luminous flux refers to the light emitted by the LED per unit time. Therefore, the cold-to-hot ratio actually indicates the ability of the LED to maintain the luminous flux in the hot state. When the cold-to-hot ratio is equal to 1, it indicates that the LED has the best luminous flux maintenance ability in the hot state, that is, the luminous flux does not decay in the hot state, and the amount of light emitted by the LED remains unchanged.

[0055] For example, the cold-to-hot ratio of the first color LED 21 is smaller than that of the second color LED 22, that is, compared with the second color LED 22, the luminous efficiency of the first color LED 21 decays more seriously with increasing temperature. Therefore, for the first color LED 21, a first sub-LED 21a and a second sub-LED 21b need to be set.

[0056] For example, compared with the light-emitting area of ​​the second color LED 22, the light-emitting area of ​​the second sub-LED 21b is larger than the light-emitting area of ​​the second color LED 22. Under higher temperature conditions (greater than or equal to the preset critical temperature), at least the second sub-LED 21b emits light, thereby compensating for the attenuation of the light-emitting efficiency of the first color LED 21 caused by the increase in high temperature, thereby improving or avoiding the color cast phenomenon.

[0057] In some embodiments, the light emitting area of ​​the first sub-LED 21 a is greater than the light emitting area of ​​the second color LED 22 .

[0058] For example, in some implementations, the preset critical temperature is high. When the temperature is close to the preset critical temperature but does not exceed the preset critical temperature, the luminous efficiency of the first color LED 21 has been attenuated to a large extent. Therefore, the light-emitting area of ​​the first sub-LED 21a is set to be larger than the light-emitting area of ​​the second color LED 22. The first sub-LED 21a can also compensate to a certain extent for the attenuation of the luminous efficiency of the first color LED 21 caused by the increase in high temperature, thereby improving or avoiding the color cast phenomenon.

[0059] For example, in some other embodiments, the first color sub-pixel SP1 may include 3 or more first color light-emitting diodes 21, and the light-emitting areas of these different first color light-emitting diodes 21 may be different. For example, the first color sub-pixel SP1 may include a first sub-light-emitting diode 21a, a second sub-light-emitting diode 21b, and a third sub-light-emitting diode, and the light-emitting areas of the first sub-light-emitting diode 21a, the second sub-light-emitting diode 21b, and the third sub-light-emitting diode are all different, and the first sub-light-emitting diode 21a, the second sub-light-emitting diode 21b, and the third sub-light-emitting diode can display under different temperature conditions of the display panel.

[0060] In some embodiments, the plurality of sub-pixels SP further include a plurality of third color sub-pixels SP3, the third color sub-pixel SP3 includes at least one third color LED 23, and the first color LED 21, the second color LED 22 and the third color LED 23 are LEDs of different colors.

[0061] By way of example, the display panel 100 may include sub-pixels of multiple colors, and the sub-pixels of multiple colors include light emitting diodes of multiple colors.

[0062] In some embodiments, when the temperature of the display panel 100 is less than a preset critical temperature, the display panel 100 is in the first operating mode, and the first sub-LED 21a, the second color LED 22, and the third color LED 23 emit light;

[0063] When the temperature of the display panel 100 is greater than the preset critical temperature, the display panel 100 is in the second operation mode, and the second sub-LED 21 b , the second color LED 22 and the third color LED 23 emit light.

[0064] For example, the preset critical temperature is any value between 45 and 60 degrees Celsius. For example, the preset critical temperature is any value between 45, 48, 50, 52, 55, 58 and 60 degrees Celsius. The preset critical temperature is the temperature of the display panel 100. For example, the display panel 100 or the display device includes a driving chip and a temperature sensor 30. The temperature sensor 30 can be arranged on the back of the display panel 100, or in other components of the display device. The temperature sensor 30 can obtain the temperature of the display panel 100.

[0065] For example, in some embodiments, when the temperature of the display panel 100 is greater than a preset critical temperature, the display panel 100 is in the second operating mode, and the second sub-LED 21b, the second color LED 22 and the third color LED 23 emit light.

[0066] For example, in some other embodiments, when the temperature of the display panel 100 is greater than the preset critical temperature, the display panel 100 is in the second working mode, and the first sub-LED 21a, the second sub-LED 21b, the second color LED 22, and the third color LED 23 emit light. That is, in the first color sub-pixel SP1, both the first sub-LED 21a and the second sub-LED 21b emit light, so that the light emitting area in the first color sub-pixel SP1 is further increased.

[0067] In some embodiments, the brightness difference between the white screen brightness of the first working mode and the white screen brightness of the second working mode is less than or equal to 10%;

[0068] ;

[0069] ΔL% represents the brightness difference, L2 represents the brightness of the white screen in the second working mode, and L1 represents the brightness of the white screen in the first working mode.

[0070] For example, the absolute value of the brightness difference between the white screen brightness of the first working mode and the white screen brightness of the second working mode is less than or equal to 10%, which can ensure that the color deviation of the white screen brightness of the first working mode and the white screen of the second working mode is small and within the preset specification range.

[0071] In some embodiments, the color deviation value of the x color coordinate (Wx) of the white picture in the first working mode and the white picture in the second working mode is less than or equal to 0.03;

[0072] The color deviation value of the y color coordinate (Wy) of the white picture in the first working mode and the white picture in the second working mode is less than or equal to 0.03;

[0073] Δx=|x2-x1|, Δy=|y2-y1|;

[0074] Among them, Δx represents the color deviation value of the x color coordinate, x2 represents the x coordinate of the white screen in the second working mode, x1 represents the x coordinate of the white screen in the first working mode, Δy represents the color deviation value of the y color coordinate, y2 represents the y coordinate of the white screen in the second working mode; y1 represents the y coordinate of the white screen in the first working mode.

[0075] For example, the color deviation value of the x color coordinate of the white screen in the first working mode and the white screen in the second working mode is less than or equal to 0.03; the color deviation value of the y color coordinate of the white screen in the first working mode and the white screen in the second working mode is less than or equal to 0.03; this can ensure that the brightness of the white screen in the first working mode and the color deviation of the white screen in the second working mode are small and within the preset specification range.

[0076] For example, in some other embodiments, the color deviation value of the x color coordinate of the white screen in the first working mode and the white screen in the second working mode is less than or equal to 0.02; the color deviation value of the y color coordinate of the white screen in the first working mode and the white screen in the second working mode is less than or equal to 0.02; this can ensure that the brightness of the white screen in the first working mode and the color deviation of the white screen in the second working mode are small and within the preset specification range.

[0077] In addition, in some embodiments, the cold-to-hot ratio of the first color LED 21 is smaller than the cold-to-hot ratio of the second color LED 22 and the cold-to-hot ratio of the third color LED 23; the light-emitting area of ​​the second sub-LED 21b is larger than the light-emitting area of ​​the second color LED 22 and the light-emitting area of ​​the third color LED 23. By increasing the light-emitting area of ​​the second sub-LED 21b, the color shift problem is improved or avoided.

[0078] In addition, in some embodiments, the light emitting area of ​​the first sub-LED 21a is larger than the light emitting area of ​​the second color LED 22 and the light emitting area of ​​the third color LED 23. By increasing the light emitting area of ​​the first sub-LED 21a and the second sub-LED 21b, the color shift problem can be better improved or avoided (when the temperature is close to the preset critical temperature and does not exceed the preset critical temperature).

[0079] In some embodiments, the first color sub-pixel SP1 is a red sub-pixel, and the second color sub-pixel SP2 and the third color sub-pixel SP3 are different ones of a green sub-pixel and a blue sub-pixel.

[0080] For example, the luminous efficiency of a red light emitting diode attenuates more seriously as the temperature rises (the first color light emitting diode 21 has a smaller cold-to-hot ratio), so the first color sub-pixel SP1 is a red sub-pixel.

[0081] For example, the second color sub-pixel SP2 is one of the green sub-pixel and the blue sub-pixel, and the third color sub-pixel SP3 is the other of the green sub-pixel and the blue sub-pixel.

[0082] In some embodiments, Figure 4 As shown, the display panel also includes a plurality of selection drive circuits 81, the selection drive circuits 81 are electrically connected to the first sub-light emitting diode 21a and the second sub-light emitting diode 21b in the corresponding first color sub-pixel SP1, and the selection drive circuits 81 are configured to control the first sub-light emitting diode 21a and the second sub-light emitting diode 21b to emit light under different temperature conditions of the display panel 100.

[0083] For example, Figure 4 As shown, a first color sub-pixel SP1 corresponds to a selection drive circuit 81. In a first color sub-pixel SP1, a selection drive circuit 81 is electrically connected to the first sub-light emitting diode 21a and the second sub-light emitting diode 21b. The other end of the selection drive circuit 81 is electrically connected to the driver chip 70. The driver chip 70 can control the selection drive circuit 81 to work. The selection drive circuit 81 can control the first sub-light emitting diode 21a or the second sub-light emitting diode 21b to emit light under different temperature conditions. When the temperature of the display panel 100 is less than the preset critical temperature, the display panel 100 is in the first working mode, and the selection drive circuit 81 can control the first sub-light emitting diode 21a to emit light; when the temperature of the display panel 100 is greater than the preset critical temperature, the display panel 100 is in the second working mode, and the selection drive circuit 81 can control the second sub-light emitting diode 21b to emit light.

[0084] In some embodiments, Figure 5As shown, the display panel 100 further includes a first sub-driving circuit 91, a second sub-driving circuit 92 and at least one driving chip 70. The first sub-driving circuit 91 is electrically connected to the first sub-light emitting diode 21a; the second sub-driving circuit 92 is electrically connected to the second sub-light emitting diode 21b; the first sub-driving circuit 91 and the second sub-driving circuit 92 are electrically connected to the corresponding driving chip 70 respectively.

[0085] For example, Figure 5 As shown, the first sub-LED 21a and the second sub-LED 21b are electrically connected to different LEDs. The first sub-driver circuit 91 can be controlled to work by the driver chip 70, and the first sub-driver circuit 91 can control the first sub-LED 21a to emit light. The second sub-driver circuit 92 can be controlled to work by the driver chip 70, and the second sub-driver circuit 92 can control the second sub-LED 21b to emit light.

[0086] It should be noted that Figure 2 As shown in the figure, the first color sub-pixel SP1 includes a first sub-LED 21a and a second sub-LED 21b, both of which are LEDs for displaying images; the second color sub-pixel SP2 includes a second color LED 22, which is a LED for displaying images; the third color sub-pixel SP3 includes a third color LED 23, which is a LED for displaying images.

[0087] It should be noted that Figure 3 As shown in the figure, the first color sub-pixel SP1 includes two first sub-LEDs 21a and two second sub-LEDs 21b, wherein one first sub-LED 21a and one second sub-LED 21b are both LEDs for displaying images, and the other first sub-LED 21a and the other second sub-LED 21b are both spare LEDs for repair. The difference between the LED for displaying images and the spare LED for repair is explained by taking the first sub-LED 21a as an example. When the first sub-LED 21a of the display panel 100 displays normally, the spare LED for repair does not participate in the display. When a first sub-LED 21a for displaying images is damaged, another first sub-LED 21a can be used to replace the damaged first sub-LED 21a for display by using a repair process.

[0088] It should be noted that Figure 3As shown in FIG. 1 , the second color sub-pixel SP2 includes two second color LEDs 22, one of which is a LED for displaying an image, and the other second color LED 22 is a spare LED for maintenance. The third color sub-pixel SP3 includes two third color LEDs 23, one of which is a LED for displaying an image, and the other third color LED 23 is a spare LED for maintenance.

[0089] See also Figure 6 , Figure 6 A schematic diagram of a display device provided in some embodiments of the present application.

[0090] On the third aspect, based on the same application concept, the present application also provides a display device 200, the display device 200 includes any one of the display panels 100 described above, or the display device 200 includes a display panel 100 that combines any several of the features described above.

[0091] For example, the display device 200 also has the beneficial effects of the display panel 100 in the above embodiment. The similarities can be understood by referring to the above explanation of the display panel 100 and will not be described in detail below.

[0092] For example, the display device 200 provided in the embodiment of the present application can be Figure 6 The mobile phone shown can also be any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, industrial control equipment, medical display screens, touch interactive terminals, etc. The embodiments of the present application do not specifically limit this.

[0093] See also Figure 7 and Figure 8 , Figure 7 A schematic diagram of the process steps of a driving method for a display device provided in some embodiments of the present application. Figure 8 A schematic diagram of a driving process of a driving method for a display device provided in some embodiments of the present application.

[0094] Any of the display panels or display devices mentioned above can be used for display by using the driving method. The driving method of the display device includes: step S100, step S200 and step S300.

[0095] Step S100 , obtaining the temperature of the display panel 100 .

[0096] Step S200 , when the temperature of the display panel 100 is lower than a preset critical temperature, the first light emitting diode 21 a in the first color sub-pixel SP1 is driven to emit light.

[0097] Step S300 , when the temperature of the display panel 100 is greater than a preset critical temperature, the second light emitting diode 21 b in the first color sub-pixel SP1 is driven to emit light.

[0098] For example, Figure 1 , Figure 4 and Figure 5 The display panel 100 or display device 200 shown may include a driving chip 70 and a temperature sensor 30 . The temperature sensor 30 may be disposed on the back of the display panel 100 , or may be disposed in other components of the display device. The temperature sensor 30 may obtain the temperature of the display panel 100 .

[0099] For example, in step S100 , the temperature of the display panel 100 may be acquired by the temperature sensor 30 .

[0100] For example, in some embodiments, when the temperature of the display panel 100 is greater than a preset critical temperature, the display panel 100 is in the second operating mode, and the second sub-LED 21b, the second color LED 22 and the third color LED 23 emit light.

[0101] For example, in some other embodiments, when the temperature of the display panel 100 is greater than the preset critical temperature, the display panel 100 is in the second working mode, and the first sub-LED 21a, the second sub-LED 21b, the second color LED 22, and the third color LED 23 emit light. That is, in the first color sub-pixel SP1, both the first sub-LED 21a and the second sub-LED 21b emit light, so that the light emitting area in the first color sub-pixel SP1 is further increased.

[0102] For example, Figure 8 As shown, the driving process of the driving method of the display device includes: obtaining the temperature of the display panel; comparing the temperature of the display panel, comparing the obtained temperature of the display panel with the preset critical temperature; when the temperature of the display panel is lower than the preset critical temperature, the display panel performs a first working mode display; when the temperature of the display panel is higher than the preset critical temperature, the display panel performs a second working mode display.

[0103] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0104] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A display panel, characterized in that: include: substrate; A plurality of sub-pixels are located on one side of the substrate, wherein the plurality of sub-pixels include a plurality of first color sub-pixels and a plurality of second color sub-pixels; The first color sub-pixel includes at least two first color light-emitting diodes, the at least two first color light-emitting diodes of the first color sub-pixel include a first sub-light-emitting diode and a second sub-light-emitting diode, and the light-emitting area of ​​the first sub-light-emitting diode is smaller than the light-emitting area of ​​the second sub-light-emitting diode; The second color sub-pixel includes at least one second color light emitting diode, and the first color light emitting diode and the second color light emitting diode are light emitting diodes of different colors.

2. The display panel according to claim 1, characterized in that: The first sub-LED and the second sub-LED are configured to emit light under different temperature conditions of the display panel.

3. The display panel according to claim 1, characterized in that: The cold-to-hot ratio of the first color light emitting diode is smaller than the cold-to-hot ratio of the second color light emitting diode; The light emitting area of ​​the second sub-LED is larger than the light emitting area of ​​the second color LED.

4. The display panel according to claim 3, characterized in that: The light emitting area of ​​the first sub-LED is larger than the light emitting area of ​​the second color LED.

5. The display panel according to claim 1, characterized in that: The plurality of sub-pixels further include a plurality of third color sub-pixels, the third color sub-pixels include at least one third color light emitting diode, and the first color light emitting diode, the second color light emitting diode and the third color light emitting diode are light emitting diodes of different colors.

6. The display panel according to claim 5, characterized in that: When the temperature of the display panel is lower than a preset critical temperature, the display panel is in a first working mode, and the first sub-LED, the second color LED and the third color LED emit light; When the temperature of the display panel is greater than a preset critical temperature, the display panel is in a second operation mode, and the second sub-LED, the second color LED and the third color LED emit light.

7. The display panel according to claim 6, characterized in that: The brightness difference between the white screen brightness of the first working mode and the white screen brightness of the second working mode is less than or equal to 10%; ； ΔL% represents the brightness difference, L2 represents the brightness of the white screen in the second working mode, and L1 represents the brightness of the white screen in the first working mode.

8. The display panel according to claim 6, characterized in that: The color deviation value of the x color coordinate of the white picture in the first working mode and the white picture in the second working mode is less than or equal to 0.03; The color deviation value of the y color coordinate of the white picture in the first working mode and the white picture in the second working mode is less than or equal to 0.03; Δx=|x2-x1|, Δy=|y2-y1|; Among them, Δx represents the color deviation value of the x color coordinate, x2 represents the x coordinate of the white screen of the second working mode, x1 represents the x coordinate of the white screen of the first working mode, Δy represents the color deviation value of the y color coordinate, y2 represents the y coordinate of the white screen of the second working mode; y1 represents the y coordinate of the white screen of the first working mode.

9. The display panel according to claim 5, characterized in that: The first color sub-pixel is a red sub-pixel, and the second color sub-pixel and the third color sub-pixel are different ones of a green sub-pixel and a blue sub-pixel.

10. The display panel according to any one of claims 1 to 9, characterized in that: Also includes: A plurality of selection drive circuits are electrically connected to the first sub-LED and the second sub-LED in the corresponding first color sub-pixel, and the selection drive circuits are configured to control the first sub-LED and the second sub-LED to emit light under different temperature conditions of the display panel.

11. The display panel according to any one of claims 1 to 9, characterized in that: Also includes: a first sub-driving circuit, electrically connected to the first sub-light emitting diode; a second sub-driving circuit, electrically connected to the second sub-light emitting diode; At least one driving chip, the first sub-driving circuit and the second sub-driving circuit are electrically connected to the corresponding driving chip respectively.

12. A display device, characterized in that: The invention comprises a display panel as claimed in any one of claims 1 to 11.

13. A method for driving a display device, characterized in that: For driving the display device as claimed in claim 12, the driving method of the display device comprising: Acquiring the temperature of the display panel; Under the condition that the temperature of the display panel is lower than a preset critical temperature, driving the first sub-light emitting diode in the first color sub-pixel to emit light; Under the condition that the temperature of the display panel is greater than a preset critical temperature, the second sub-light emitting diode in the first color sub-pixel is driven to emit light.

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