A display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel comprises: a plurality of pixel units; each pixel unit comprises a plurality of sub-pixels; the sub-pixel comprises a light emitting element and a driving circuit; the driving circuit is electrically connected with the light emitting element; the driving process of the sub-pixel comprises at least a light emitting stage; the driving circuit is used for driving the light emitting element to emit light in the light emitting stage; the light emitting element comprises a first light emitting element and a second light emitting element; the light emitting color of the first light emitting element is different from the light emitting color of the second light emitting element; the display mode of the display panel comprises a first mode; in the first mode, within the display time of a frame of picture, the sum of the time length of the light emitting stage of the first light emitting element is greater than the sum of the time length of the light emitting stage of the second light emitting element, or in the same pixel unit, the sum of the time length of the light emitting stage of N first light emitting elements is greater than the sum of the time length of the light emitting stage of M second light emitting elements, wherein N>M>=1. The application can improve the display quality.

Description

A display panel and display device Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a display panel and a display device. Background Technology

[0002] With the development of display technology, display panels are widely used in electronic devices such as smartphones, tablet PCs, and car navigation systems, becoming indispensable devices in people's lives and work. People's requirements for the display quality of display panels are also getting higher and higher.

[0003] Currently, by setting light-emitting elements with different light-emitting colors in the display panel, the display panel can display a color image. However, the display luminous efficiency of light-emitting elements with different light-emitting colors varies, especially at higher temperatures, where the difference in display luminous efficiency between light-emitting elements with different light-emitting colors becomes more obvious, resulting in color deviation. Summary of the Invention

[0004] This invention provides a display panel and a display device to address the deficiencies in the prior art, improve the color shift problem of the display panel, and enhance the display quality of the display panel.

[0005] In a first aspect, embodiments of the present invention provide a display panel, the display panel comprising: a plurality of pixel units; each pixel unit comprising a plurality of sub-pixels; each sub-pixel comprising a light-emitting element and a driving circuit; the driving circuit being electrically connected to the light-emitting element; the driving process of the sub-pixel comprising at least a light-emitting stage; the driving circuit being used to drive the light-emitting element to emit light during the light-emitting stage;

[0006] The light-emitting element includes a first light-emitting element and a second light-emitting element; the light-emitting color of the first light-emitting element is different from the light-emitting color of the second light-emitting element;

[0007] The display panel's display modes include a first mode;

[0008] In the first mode, during the display time of one frame, the sum of the durations of the light-emitting phases of the first light-emitting elements is greater than the sum of the durations of the light-emitting phases of the second light-emitting elements, or, in the same pixel unit, the sum of the durations of the light-emitting phases of N first light-emitting elements is greater than the sum of the durations of the light-emitting phases of M second light-emitting elements, where N>M≧1.

[0009] Secondly, embodiments of the present invention also provide a display panel, which includes: a plurality of pixel units and a plurality of light emission control signal lines;

[0010] Each pixel unit includes multiple sub-pixels; each sub-pixel includes a light-emitting element and a driving circuit; the driving circuit is electrically connected to the light-emitting element; the driving process of the sub-pixel includes at least a light-emitting stage; the driving circuit is used to drive the light-emitting element to emit light during the light-emitting stage; the light-emitting element includes a first light-emitting element and a second light-emitting element; the light-emitting color of the first light-emitting element is different from the light-emitting color of the second light-emitting element; the driving circuit electrically connected to the first light-emitting element is the first driving circuit, and the driving circuit electrically connected to the second light-emitting element is the second driving circuit.

[0011] The light emission control signal line is electrically connected to the driving circuit, and the light emission control signal provided by the light emission control signal line controls the sub-pixel to enter the light emission stage; the light emission control signal line includes a first light emission control signal line and a second light emission control signal line; the first light emission control signal line is electrically connected to the first driving circuit, and the second light emission control signal line is electrically connected to the second driving circuit.

[0012] Thirdly, embodiments of the present invention also provide a display device, which includes a display panel as described above.

[0013] The technical solution of this invention, during the display time of one frame of a display panel in the first display mode, sets the sum of the light-emitting phase durations of the first light-emitting element to be greater than the sum of the light-emitting phase durations of the second light-emitting element. This ensures that the human eye perceives the light from the first light-emitting element for a longer period than it perceives the light from the second light-emitting element. This increases the total integral value of the brightness and light-emitting time of the first light-emitting element in the same pixel unit, thereby improving the perceived brightness perceived by the human visual system, compensating for the insufficient brightness of the first light-emitting element, and improving or balancing the color shift problem caused by the difference in luminous efficiency between the first and second light-emitting elements. To improve the display effect of the display panel; correspondingly, in the display mode of the display panel in the first mode, within one frame of the display time, by making the sum of the light emission stages of N first light-emitting elements greater than the sum of the light emission stages of M second light-emitting elements, and by making the number N of first light-emitting elements emitting light in each pixel unit greater than the number M of second light-emitting elements, the brightness and total integral value of the light emission time of all first light-emitting elements in the same pixel unit can be increased, thus compensating for the insufficient light emission brightness of the first light-emitting elements, so as to improve or balance the color shift problem caused by the difference in luminous efficiency between the first and second light-emitting elements, thereby improving the display effect of the display panel.

[0014] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 is a top view of a display panel provided in an embodiment of the present invention;

[0017] Figure 2 is a schematic diagram of a driving circuit provided in an embodiment of the present invention;

[0018] Figure 3 is a timing diagram of a sub-pixel provided in an embodiment of the present invention;

[0019] Figure 4 is a timing diagram of a display panel in the first mode provided by an embodiment of the present invention;

[0020] Figure 5 is a timing diagram of another display panel in the first mode provided by the embodiments of the present invention;

[0021] Figure 6 is a timing diagram of another display panel in the first mode provided by the embodiment of the present invention;

[0022] Figure 7 is a top view of a pixel unit structure provided in an embodiment of the present invention;

[0023] Figure 8 is a timing diagram of another display panel in the first mode provided by the embodiments of the present invention;

[0024] Figure 9 is a timing diagram of another display panel in the first mode provided by the embodiment of the present invention;

[0025] Figure 10 is a timing diagram of another display panel in the first mode provided by the embodiment of the present invention;

[0026] Figure 11 is a top view of another display panel provided in an embodiment of the present invention;

[0027] Figure 12 is a timing diagram of a display panel in the second mode provided by an embodiment of the present invention;

[0028] Figure 13 is a timing diagram of another display panel in the second mode provided by the embodiment of the present invention;

[0029] Figure 14 is a timing diagram of another display panel in the first mode provided by the embodiment of the present invention;

[0030] Figure 15 is a timing diagram of a pixel unit in the first mode provided by an embodiment of the present invention;

[0031] Figure 16 is a timing diagram of another pixel unit in the first mode provided by the embodiment of the present invention;

[0032] Figure 17 is a timing diagram of another pixel unit in the first mode provided by the embodiment of the present invention;

[0033] Figure 18 is a timing diagram of a pixel unit in the second mode provided by an embodiment of the present invention;

[0034] Figure 19 is a timing diagram of another pixel unit in the second mode provided by the embodiment of the present invention;

[0035] Figure 20 is a timing diagram of another pixel unit in the first mode provided by the embodiment of the present invention;

[0036] Figure 21 is a timing diagram of another pixel unit in the first mode provided by the embodiment of the present invention;

[0037] Figure 22 is a timing diagram of another pixel unit in the first mode provided by the embodiment of the present invention;

[0038] Figure 23 is a timing diagram of another pixel unit in the first mode provided by the embodiment of the present invention;

[0039] Figure 24 is a top view of another pixel unit structure provided in an embodiment of the present invention;

[0040] Figure 25 is a timing diagram of another pixel unit in the first mode provided by the embodiment of the present invention;

[0041] Figure 26 is a timing diagram of another pixel unit in the first mode provided by the embodiment of the present invention.

[0042] Figure 27 is a top view of another display panel provided in an embodiment of the present invention;

[0043] Figure 28 is a timing diagram of another pixel unit in the first mode provided by the embodiment of the present invention;

[0044] Figure 29 is a timing diagram of another pixel unit in the first mode provided by the embodiment of the present invention;

[0045] Figure 30 is a timing diagram of another pixel unit in the first mode provided by the embodiment of the present invention;

[0046] Figure 31 is a timing diagram of another pixel unit in the second mode provided by the embodiment of the present invention;

[0047] Figure 32 is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be fully described below with reference to the accompanying drawings of the embodiments of this invention through specific implementation methods. Obviously, the described embodiments are only some, not all, embodiments of this invention. Various modifications and variations can be made to this invention without departing from the spirit or scope of this invention, which will be obvious to those skilled in the art. Therefore, this invention is intended to cover modifications and variations of this invention that fall within the scope of the corresponding claims (the claimed technical solutions) and their equivalents.

[0049] Furthermore, the terms "first," "second," and similar terms used in the embodiments of this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, terms such as "an," "one," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. Terms such as "including" or "comprising" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes. In addition, descriptions of "same" or "equal" in the embodiments of this disclosure do not mean that two objects are completely equal in size or shape; they are allowed to be approximately the same or approximately equal within a certain error range.

[0050] It should be noted that the implementation methods provided in the embodiments of the present invention can be combined with each other without contradiction.

[0051] Currently, self-emissive display panels, such as OLED, micro LED, or mini LED display panels, are highly favored because they do not require a backlight module and offer excellent color saturation, contrast, and response speed.

[0052] Self-emissive display panels typically include driving circuits and light-emitting elements. The driving circuits drive the light-emitting elements to emit light. Due to limitations in the materials used to manufacture the light-emitting elements, different colors of light-emitting elements have different luminous efficiencies. Therefore, even when the driving circuits for each color of light-emitting element provide the same driving signal, the brightness of each color's light-emitting element varies, resulting in color shift. Existing technologies mitigate the color shift problem caused by different luminous efficiencies by making the mapping relationship between the driving signal and the brightness of different colors of light-emitting elements different. However, for light-emitting elements with low luminous efficiency, once the driving signal reaches its limit, it is impossible to further adjust the driving signal to change the brightness, thus failing to further improve the color shift problem and affecting the display quality of the display panel.

[0053] To address the aforementioned technical problems, embodiments of the present invention provide a display panel comprising: a plurality of pixel units; each pixel unit comprising a plurality of sub-pixels; each sub-pixel comprising a light-emitting element and a driving circuit; the driving circuit being electrically connected to the light-emitting element; the driving process of the sub-pixel comprising at least a light-emitting stage; the driving circuit being used to drive the light-emitting element to emit light during the light-emitting stage; the light-emitting element comprising a first light-emitting element and a second light-emitting element; the light-emitting color of the first light-emitting element being different from the light-emitting color of the second light-emitting element; the display mode of the display panel comprising a first mode; in the first mode, during the display time of one frame, the sum of the durations of the light-emitting stages of the first light-emitting elements is greater than the sum of the durations of the light-emitting stages of the second light-emitting elements, or, in the same pixel unit, the sum of the durations of the light-emitting stages of N first light-emitting elements is greater than the sum of the durations of the light-emitting stages of M second light-emitting elements, wherein N>M≧1.

[0054] By adopting the above technical solution, by setting the sum of the light-emitting phases of the first light-emitting element to be greater than the sum of the light-emitting phases of the second light-emitting element, the duration for which the human eye perceives the light from the first light-emitting element is longer than the duration for which it perceives the light from the second light-emitting element. This increases the total integral value of the brightness and light-emitting time of the first light-emitting element in the same pixel unit, thereby increasing the perceived brightness of the first light-emitting element as perceived by the human visual system. This compensates for the insufficient brightness of the first light-emitting element, improves or balances the color shift problem caused by the difference in luminous efficiency between the first and second light-emitting elements, and ultimately improves the display effect of the display panel. Correspondingly, during the display time of one frame when the display mode of the display panel is the first mode, by making the sum of the light-emitting phases of N first light-emitting elements greater than the sum of the light-emitting phases of M second light-emitting elements, and by making the number N of first light-emitting elements emitting light in each pixel unit greater than the number M of second light-emitting elements, the brightness of all first light-emitting elements in the same pixel unit and the total integral value of the light-emitting time can be improved, thus compensating for the insufficient light-emitting brightness of the first light-emitting elements, improving or balancing the color shift problem caused by the difference in luminous efficiency between the first and second light-emitting elements, and thereby improving the display effect of the display panel.

[0055] The above is the core idea of ​​this invention. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention. The technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0056] Figure 1 is a top view of a display panel according to an embodiment of the present invention. Referring to Figure 1, the display panel 100 includes a plurality of pixel units 10; each pixel unit 10 includes a plurality of sub-pixels 11; each sub-pixel 11 includes a light-emitting element LED and a driving circuit DC; the driving circuit DC is electrically connected to the light-emitting element LED; the driving process of the sub-pixel 11 includes at least a light-emitting stage; the driving circuit DC is used to drive the light-emitting element LED to emit light during the light-emitting stage; the light-emitting element LED includes a first light-emitting element D1 and a second light-emitting element D2; the light-emitting color of the first light-emitting element D1 is different from the light-emitting color of the second light-emitting element D2.

[0057] In this system, the light-emitting element (LED) is typically a current-driven element, requiring a DC driving circuit to convert the received data signal into a driving current and provide it to the LED during the light-emitting stage to drive the LED to emit light. As shown in Figure 2, the DC driving circuit may include at least a driving module 101 and a data writing module 102. The driving module 101 may include a driving transistor M1. The data writing module 102 can control the data signal Data to be written to the gate of the driving transistor M1 before the light-emitting stage, so that during the light-emitting stage, the driving transistor M1 can provide a driving current to the LED based on the signal at its gate, thereby driving the LED to emit light.

[0058] It is understood that, provided the driving circuit DC can drive the light-emitting element LED to emit light according to the received data signal Data, the specific structure of the driving circuit DC can be designed according to actual needs. In an optional embodiment, as shown in Figure 2, the driving circuit DC can be a typical 7T1C pixel circuit. In other embodiments, the driving circuit DC can also be a typical 8T1C pixel circuit or any variation of the 7T1C pixel circuit. This embodiment of the invention does not specifically limit this. For ease of description, unless otherwise specified, this embodiment of the invention uses a driving circuit DC including a 7T1C pixel circuit as an example to illustrate the technical solution of this embodiment of the invention.

[0059] As shown in Figure 2, the driving circuit DC may also include an initialization module 103, a compensation module 104, a first light-emitting control module 105, a second light-emitting control module 106, a reset module 107, and a storage capacitor Cst. In this case, the driving process of the sub-pixel 11 may also include an initialization stage, a data writing stage, and a reset stage.

[0060] For example, Figure 3 is a timing diagram of a sub-pixel provided in an embodiment of the present invention. Referring to Figures 2 and 3, in the initialization phase tc, the initialization module 103 can use the initialization signal Vref to initialize the gate of the driving transistor M1 and the storage capacitor Cst; in the data writing phase td, the data writing module 102 provides the data signal Data to the gate of the driving transistor M1 and stores it in the storage capacitor Cst. At the same time, the compensation module 104 compensates the threshold voltage of the driving transistor M1 to the gate of the driving transistor M1 and stores it in the storage capacitor Cst, so that the driving transistor M1 is driven by the driving current generated by its gate and the driving transistor... The threshold voltage of M1 is irrelevant. During the reset phase tv, the reset module 107 can reset the LED using the reset signal Vin. During the light-emitting phase te, the first light-emitting control module 105 can provide the first power signal PVDD to the first terminal of the driving transistor M1, so that the driving transistor M1 can generate a corresponding driving current according to the voltage difference between its gate and the first terminal. At the same time, the second light-emitting control module 106 can control the second terminal of the driving transistor M1 to form a conductive current path with the LED, so that the driving current can be provided to the LED through the second light-emitting control module 106 to drive the LED to emit light. The reset signal Vin can be the same as or different from the initialization signal Vref, and this embodiment of the invention does not specifically limit this.

[0061] Furthermore, the above example only illustrates that the reset phase tv and the data writing phase td are the same phase. In the embodiments of the present invention, the reset phase tv can be a separate phase, which can be located before or after the data writing phase td. Alternatively, the reset phase tv can also be the same phase as the initialization phase tc. The embodiments of the present invention do not specifically limit this. For ease of description, unless otherwise specified, the embodiments of the present invention use the example of the reset phase tv and the data writing phase td being the same phase to illustrate the technical solutions of the embodiments of the present invention.

[0062] In an optional embodiment, continuing to refer to Figures 2 and 3, the initialization module 103 may include an initialization transistor M3. This initialization transistor M3 can be turned on or off under the control of a first scan signal S1 at its gate. When the first scan signal S1 controls the initialization transistor M3 to be turned on, the initialization signal Vref can be transmitted through the turned-on initialization transistor M3 to the first node N1, which is electrically connected to the gate of the driving transistor M1 and the first plate of the storage capacitor Cst, to initialize the driving transistor M1 and the storage capacitor Cst, clearing the electrical signals written to the first node N1 and the storage capacitor Cst in the previous data writing stage td, and controlling the driving transistor M1 to be fully turned on in preparation for the data writing stage td. The effective level phase of the first scan signal S1 can be used as the initialization phase tc.

[0063] The data writing module 102 may include a data writing transistor M2, which can be turned on or off under the control of a second scan signal S2 at its gate. When the second scan signal S2 controls it to be turned on, the data signal Data can be transmitted to the compensation module 104 through the turned-on data writing transistor M2 and the turned-on driving transistor M1, so that the compensation module 104 can compensate for the data signal Data. The effective level phase of the second scan signal S2 can be considered as the data writing phase td.

[0064] The compensation module 104 may include a threshold compensation transistor M4. The gate of the compensation transistor M4 can receive the same signal as the gate of the data writing transistor M2. The data writing transistor M2 can be turned on or off under the control of the second scan signal S2. When the second scan signal S2 controls the data writing transistor M2 and the threshold compensation transistor M4 to be turned on, the first node N1 can be charged through the turned-on threshold compensation transistor M4, and control the opening degree of the driving transistor M1 to gradually decrease until the voltage difference between the gate voltage of the driving transistor M1 and its first electrode voltage reaches its threshold voltage, and the driving transistor M1 is turned off so as to store the threshold-compensated data signal Data in the first node N1.

[0065] The reset module 107 may include a reset transistor M7. The gate of the reset transistor M7 can receive the same signal as the gate of the data writing transistor M2. The reset transistor M7 can be turned on or off under the control of the second scan signal S2. When the second scan signal S2 controls the reset transistor M7 to be turned on, the reset signal Vin can be transmitted to the light-emitting element LED through the turned-on reset transistor M7 to reset the light-emitting element LED, clearing the electrical signal provided to the light-emitting element LED in the previous light-emitting stage te, in preparation for the light-emitting stage te. The effective level stage of the second scan signal S2 can be used as the reset stage tv.

[0066] The first light-emitting control module 105 may include a first light-emitting control transistor M5, and the second light-emitting control module 106 may include a second light-emitting control transistor M6. The gates of the first light-emitting control transistor M5 and the second light-emitting control transistor M6 can simultaneously receive a light-emitting control signal Emit. The first light-emitting control transistor M5 and the second light-emitting control transistor M6 can be turned on or off under the control of the light-emitting control signal Emit. When the light-emitting control signal Emit controls the first light-emitting control transistor M5 and the second light-emitting control transistor M6 to be turned on, the first power supply signal PVDD can be transmitted to the first terminal of the driving transistor M1 according to the turned-on first light-emitting control transistor M5. The driving transistor M1 generates a driving current independent of the threshold voltage based on the voltage difference between the threshold-compensated data signal Data stored in the first node N1 and the first power supply signal PVDD. At the same time, the driving current can be transmitted to the light-emitting element LED through the turned-on second light-emitting control transistor M6 to drive the light-emitting element LED to emit light. It is understood that, in the embodiments of the present invention, the light-emitting stage te of the light-emitting element LED is the stage in which the driving circuit DC electrically connected to the light-emitting element LED provides driving current to the light-emitting element LED. The duration of the light-emitting stage te of the light-emitting element LED can be equal to the effective level duration of the light-emitting control signal Emit received by the driving circuit DC electrically connected to the light-emitting element LED, that is, the effective pulse width of the light-emitting control signal Emit.

[0067] It should be noted that Figures 2 and 3 only exemplarily show that the transistors in the driving circuit DC are all P-channel transistors. A P-channel transistor is turned on when the signal at its gate is low and turned off when the signal at its gate is high. In other embodiments, at least some of the transistors in the driving circuit DC may also be N-channel transistors. An N-channel transistor is turned on when the signal at its gate is high and turned off when the signal at its gate is low. The channel type of the transistors in the driving circuit DC can be set according to actual needs, and this embodiment of the invention does not limit this. For ease of description, unless otherwise specified, this embodiment of the invention uses P-channel transistors in the driving circuit DC as an example to illustrate the technical solutions of this embodiment.

[0068] Optionally, the light-emitting element (LED) may include OLED, mini-LED, or micro LED. When the light-emitting element includes mini-LED or micro LED, the LED can have a smaller size, which is beneficial for improving the resolution of the display panel.

[0069] It is understandable that different colored light-emitting elements are affected by micro-size effects to varying degrees, resulting in different luminous efficiencies. For example, when the light-emitting elements include mini-LEDs or micro LEDs, if the first light-emitting element D1 emits red light and the second light-emitting element D2 emits green or blue light, the luminous efficiency of the first light-emitting element D1 will be lower than that of the second light-emitting element D2. Consequently, when the driving current provided by the driving circuit for driving the first light-emitting element D1 is the same as that provided by the driving circuit for driving the second light-emitting element D2, the brightness of the first light-emitting element D1 will be lower than that of the second light-emitting element D2, causing color shift problems. In particular, as the temperature of the display panel increases, the luminous efficiency of the LED light-emitting elements will decrease accordingly. Moreover, the luminous efficiency of LED light-emitting elements of different colors decreases at different rates. For example, the luminous efficiency of the first LED light-emitting element D1, which emits red light, decreases at a greater rate than that of the second LED light-emitting element D2, which emits blue or green light. This makes the difference in brightness of LED light-emitting elements of different colors more obvious under the same driving current, and the color shift problem becomes more serious, thereby affecting the display luminous effect of the display panel 100.

[0070] It's also understandable that the human visual system's perception of brightness is based on the integral of the brightness and emission time of an LED. When an LED emits light, the human visual system integrates the brightness based on the LED's emission time. The perceived brightness is related to the integral value; the larger the integral value, the stronger the perceived brightness. At the same brightness, the longer the LED's emission time, the greater the perceived brightness, which can compensate for insufficient LED brightness. Therefore, the color shift caused by the different luminous efficiencies of LEDs of different colors can be addressed by adjusting the LED's emission time or by improving the overall color accuracy.

[0071] In an optional embodiment, FIG4 is a timing diagram of a display panel in a first mode provided by the embodiment of the present invention. Referring to FIG1-FIG4, the display mode of the display panel 100 includes a first mode DP1. In the first mode DP1, within the display time F0 of one frame, the sum of the durations of the light-emitting phases te of the first light-emitting element D1 is greater than the sum of the durations of the light-emitting phases te of the second light-emitting element D2.

[0072] The first mode DP1 refers to the display mode when the luminous efficiency of the first light-emitting element D1 and the luminous efficiency of the second light-emitting element D2 have a large difference, and in this mode, the luminous efficiency of the first light-emitting element D1 is less than that of the second light-emitting element D2. For example, in the first mode DP1, where the display panel 100 is in a high-temperature environment or when the display panel 100 is displaying an image, the temperature of the display panel is high due to high brightness or high frequency. The luminous efficiency of the first light-emitting element D1, which emits red light, is lower than that of the second light-emitting element D2, which emits blue or green light, and the difference between the two is significant. Simply adjusting the value of the data signal Data is insufficient to balance the color shift caused by the difference in luminous efficiency. Similarly, in the first mode DP1, which is a high-brightness display mode, the driving current of the first light-emitting element D1, which emits red light, is already very high. Adjusting the value of the data signal Data cannot further increase the driving current, and thus, adjusting the value of the data signal Data alone cannot solve the color shift problem. Furthermore, in the first mode DP1, which is a high-refresh-rate display mode or other display modes with high image quality requirements, the balance accuracy of the luminous efficiency of different colored LEDs is high. Simply adjusting the value of the data signal Data cannot achieve a high-precision color shift balance. The technical solution of this invention can effectively improve or balance the color deviation problem caused by the large difference in luminous efficiency of LEDs of different colors, and can also achieve a high-precision luminous efficiency balance to improve the display effect of the display panel 100.

[0073] The display panel 100 includes k rows of sub-pixels 11. At least some of the sub-pixels 11 located in the same row can receive the same light emission control signal Emit. For example, the red sub-pixels located in the first row can receive the same light emission control signal Emit (1), and the green or blue sub-pixels located in the first row can receive the same light emission control signal Emit (2). During the display time F0 of one frame, each row of sub-pixels 11 can sequentially enter the light emission stage te, so that the first light emission element D1 and the second light emission element D2 of each row of sub-pixels 11 can emit light sequentially.

[0074] For example, taking the driving process of a sub-pixel in one row as an example, in each sub-pixel 11 located in the same row, the start time of the light emission stage te of the first light-emitting element D1 may be different from the start time of the light emission stage te of the second light-emitting element D2, and / or, the end time of the light emission stage te of the first light-emitting element D1 may be different from the end time of the light emission stage te of the second light-emitting element D2. In the first mode DP1, within the display time F0 of one frame, by setting the sum of the durations of the light-emitting phases te of the first light-emitting element D1 to be greater than the sum of the durations te of the light-emitting phases te of the second light-emitting element D2, the duration for which the human eye observes the light from the first light-emitting element D1 is longer than the duration for which the human eye observes the light from the second light-emitting element D2. This compensates for the insufficient brightness of the first light-emitting element D1, increases the total integral value of the brightness and light-emitting time of the first light-emitting element D1 in the same pixel unit 10, thereby increasing the perceived brightness of the first light-emitting element D1 as perceived by the human visual system, compensating for the insufficient brightness of the first light-emitting element D1, improving or balancing the color shift problem caused by the difference in luminous efficiency between the first light-emitting element D1 and the second light-emitting element D2, and thus improving the display effect of the display panel 100.

[0075] In one embodiment, FIG4 is a timing diagram of a display panel in the first mode provided by the present invention. Referring to FIG4, in the first mode DP1, within the display time F0 of one frame, the light emission control signal Emit (1) received by the driving circuit DC1 electrically connected to the first light emission element D1 includes an effective pulse, and the light emission control signal Emit (2) received by the driving circuit DC2 electrically connected to the second light emission element D2 also includes an effective pulse. The effective pulse width of the light emission control signal Emit (1) received by the driving circuit DC1 is greater than the effective pulse width of the light emission control signal Emit (2) received by the driving circuit DC2.

[0076] In another embodiment, FIG5 is a timing diagram of another display panel in the first mode provided by the embodiment of the present invention, and FIG6 is a timing diagram of another display panel in the first mode provided by the embodiment of the present invention. Referring to FIG5 and FIG6, in the first mode DP1, within the display time F0 of one frame, the light emission control signal Emit (1) received by the driving circuit DC1 electrically connected to the first light-emitting element D1 includes multiple effective pulses, and / or, the light emission control signal Emit (2) received by the driving circuit DC2 electrically connected to the second light-emitting element D2 includes multiple effective pulses. When both the light emission control signal Emit(1) received by the driving circuit DC1 electrically connected to the first light-emitting element D1 and the light emission control signal Emit(2) received by the driving circuit DC2 electrically connected to the second light-emitting element D2 include multiple valid pulses, the width of each valid pulse of the light emission control signal Emit(1) is greater than the width of each valid pulse of the light emission control signal Emit(2), and / or the number of valid pulse widths of the light emission control signal Emit(1) is greater than the number of valid pulses of the light emission control signal Emit(2). It is only necessary to satisfy that, under the first mode DP1, within the display time F0 of one frame, the sum of the widths of all valid pulses of the light emission stage te of the first light-emitting element D1 is greater than the sum of the widths of all valid pulses of the light emission stage te of the second light-emitting element D2.

[0077] It should be noted that the figure only shows an example of a pixel unit 10 including a first light-emitting element D1 and a second light-emitting element D2. In other embodiments, a pixel unit 10 may include multiple first light-emitting elements D1 and / or multiple second light-emitting elements D2. In the first mode DP1, within the display time F0 of a frame, the sum of the durations of the light-emitting phases te of at least one first light-emitting element D1 is greater than the sum of the durations of the light-emitting phases te of any second light-emitting element D2.

[0078] In another optional embodiment, under the first mode DP1, within the display time F0 of one frame, in the same pixel unit, the sum of the durations of the light-emitting phases of N first light-emitting elements is greater than the sum of the durations of the light-emitting phases of M second light-emitting elements, where N>M≧1, that is, the number of first light-emitting elements D1 emitting light in each pixel unit 10 can be greater than the number of second light-emitting elements D2. In this case, the light-emitting phases te of each first light-emitting element D1 in the same pixel unit 10 can overlap, or the light-emitting phases te of each first light-emitting element D1 in the same pixel unit 10 can also not overlap.

[0079] It should be noted that a pixel unit can be understood as the smallest functional unit for achieving color display.

[0080] For example, taking N=2 and M=1 as an example, Figure 7 is a top view of a pixel unit structure provided by an embodiment of the present invention, and Figure 8 is a timing diagram of another display panel provided by an embodiment of the present invention. Referring to Figures 7 and 8, a pixel unit 10 includes two first light-emitting elements D1 (D11, D12) and one second light-emitting element D2. In the first mode DP1, within the display time F0 of one frame, the sum of the light-emitting phase te of one first light-emitting element D1 can be equal to the sum of the light-emitting phase te of one second light-emitting element D2. In the same pixel unit 10, the sum of the light-emitting phase te of two first light-emitting elements D1 (D11, D12) is equal to twice the light-emitting phase te of one second light-emitting element D2. This makes the sum of the light-emitting phase te of all first light-emitting elements D1 (D11, D12) in the same pixel unit 10 greater than the sum of the light-emitting phase te of all second light-emitting elements D2. This helps to compensate for or balance the brightness difference between the first light-emitting element D1 and the second light-emitting element D2 caused by the lower luminous efficiency of the first light-emitting element D1, and helps to improve the display uniformity of the display panel 100.

[0081] By setting the sum of the durations of the light-emitting phases te of N first light-emitting elements D1 to be greater than the sum of the durations te of the light-emitting phases te of M second light-emitting elements D2 within one frame display time F0 when the display mode of the display panel 100 is the first mode DP1, and by setting the number N of first light-emitting elements D1 in the same pixel unit 10 to be greater than the number M of second light-emitting elements D2 in the same pixel unit 10, the brightness and total integral value of the brightness and light-emitting time of all first light-emitting elements D1 in the same pixel unit 10 can be improved. This can compensate for the insufficient brightness of the first light-emitting elements D1, improve or balance the color shift problem caused by the different luminous efficiencies of LEDs of different colors, thereby improving the display uniformity of the display panel 100 and further improving the display effect of the display panel 100.

[0082] It is understood that N and M can also be other integers, such as N=3, M=1 or 2, or N=4, M=1, 2 or 3, etc. The embodiments of the present invention will not be described one by one.

[0083] In one embodiment, as shown in FIG8, taking N=2 and M=1 as an example, the duration of the light-emitting stage te of each LED in the same pixel unit 10 is the same; in another embodiment, FIG9 is a timing diagram of another display panel provided by the present invention. As shown in FIG9, taking N=2 and M=1 as an example, the sum of the durations of the light-emitting stage te of the M first light-emitting elements D1 in the same pixel unit 10 is equal to the sum of the durations of the light-emitting stage te of the M second light-emitting elements D2, and the duration of the light-emitting stage te of the remaining (NM) first light-emitting elements D1 is greater than zero; in yet another embodiment, the duration of the light-emitting stage te of each first light-emitting element D1 in the same pixel unit 10 is greater than that of each second light-emitting element D2. The duration of the light-emitting phase te; In another embodiment, FIG10 is a timing diagram of another display panel provided by an embodiment of the present invention. As shown in FIG10, the duration of the light-emitting phase te of a single first light-emitting element D1 in the same pixel unit 10 may also be less than the duration of the light-emitting phase te of the second light-emitting element D2. For example, the duration of the light-emitting phase te of a single first light-emitting element D1 may be greater than 1 / 2 of the duration of the light-emitting phase te of the second light-emitting element D2 and less than the duration of the light-emitting phase te of the second light-emitting element D2. In the embodiment of the present invention, it is sufficient that the sum of the durations of the light-emitting phase te of all first light-emitting elements D1 in the same pixel unit 10 is greater than the sum of the durations of the light-emitting phase te of all second light-emitting elements D2.

[0084] It should be noted that in the same pixel unit 10, the light emission control signal Emit(11) and the light emission control signal Emit(12) received by the driving circuit DC which is electrically connected to different first light emission elements D1 (e.g., D11 and D12) can be the same signal or different signals. This embodiment of the invention does not limit this.

[0085] In another optional embodiment, FIG11 is a top view of another display panel provided by the present invention. Referring to FIG2-FIG6 and FIG11, the display panel 100 further includes multiple light emission control signal lines EL; the light emission control signal lines EL are electrically connected to the driving circuit DC, and the light emission control signal Emit provided by the light emission control signal lines EL controls the sub-pixel 11 to enter the light emission stage te; the driving circuit DC electrically connected to the first light emission element D1 is the first driving circuit DC1, and the driving circuit DC electrically connected to the second light emission element D2 is the second driving circuit DC2; the light emission control signal lines EL include the first light emission control signal line EL1 and the second light emission control signal line EL2; the first light emission control signal line EL1 is electrically connected to the first driving circuit DC1, and the second light emission control signal line EL2 is electrically connected to the second driving circuit DC2.

[0086] For example, the first light-emitting control signal line EL1 transmits a first light-emitting control signal. EL1 is electrically connected to the gate of the first light-emitting control transistor M5 and the second light-emitting control transistor M6 of the first driving circuit DC1. The first light-emitting control signal can simultaneously control the on / off state of the first light-emitting control transistor M5 and the second light-emitting control transistor M6. By controlling the on / off state of the first light-emitting control transistor M5 and the second light-emitting control transistor M6, the first light-emitting control signal can control whether the driving current in the driving transistor M1 can be transmitted to the first light-emitting element D1, thereby controlling the duration of the light-emitting phase te of the first light-emitting element D1 within the display time F0 of one frame. Similarly, the second light-emitting control signal line EL2 transmits a second light-emitting control signal. EL2 is electrically connected to the gate of the first light-emitting control transistor M5 and the second light-emitting control transistor M6 of the second driving circuit DC2. The second light-emitting control signal can control whether the driving current in the driving transistor M1 can be transmitted to the second light-emitting element D2, thereby controlling the duration of the light-emitting phase te of the second light-emitting element D2 within the display time F0 of one frame.

[0087] By setting a first light-emitting control signal line EL1 and a second light-emitting control signal line EL2, and electrically connecting the first light-emitting control signal line EL1 to the first driving circuit DC1 and the second light-emitting control signal line EL2 to the second driving circuit DC2, different light-emitting control signal lines (EL1, EL2) can be used to provide a first light-emitting control signal to the first driving circuit DC1 and a second light-emitting control signal to the second driving circuit DC2, respectively. This allows for flexible control of the enable level duration of the first and second light-emitting control signals within the display time F0 of a single frame. This enables flexible control of the duration of the light-emitting phase te of the first light-emitting element D1 and the second light-emitting element D2. Furthermore, when the luminous efficiency of the first light-emitting element D1 and the second light-emitting element D2 has a significant difference... Meanwhile, by correspondingly adjusting the enable level duration of the first light-emitting control signal transmitted on the first light-emitting control signal line EL1 and / or the second light-emitting control signal transmitted on the second light-emitting control signal line EL2, the duration of the light-emitting phase te of the first light-emitting element D1 and / or the duration of the light-emitting phase te of the second light-emitting element D2 within the display time F0 of a frame can be set accordingly. This ensures that, under the same display grayscale, the integral value of the brightness of the first light-emitting element D1 and the duration of its light-emitting phase te is consistent with the integral value of the brightness of the second light-emitting element D2 and the duration of its light-emitting phase te. This balances the perceived brightness of the first light-emitting element D1 and the second light-emitting element D2 as perceived by the human visual system, improves or balances the color shift problem caused by the difference in luminous efficiency between the first light-emitting element D1 and the second light-emitting element D2, and thus improves the display effect of the display panel 100.

[0088] It is understood that this embodiment can be combined with the above embodiments without contradiction. For example, by adjusting the first light-emitting control signal transmitted on the first light-emitting control signal line EL1, in the first mode DP1, within the display time F0 of one frame, the first light-emitting control signal transmitted on the first light-emitting control signal line EL1 can be controlled to increase the time for the first driving circuit DC1 to provide driving current to the first light-emitting element D1. That is, in the first mode DP1, within the display time F0 of one frame, the duration of the light-emitting stage te of the first light-emitting element D1 is increased, so that in the first mode DP1, within the display time F0 of one frame, the sum of the durations of the light-emitting stages te of the first light-emitting element D1 can be greater than the sum of the durations of the light-emitting stages te of the second light-emitting element D2, and the difference between the two can be related to the difference in luminous efficiency between the first light-emitting element D1 and the second light-emitting element D2, which is beneficial to uniform luminous efficiency. The integral value of the luminous brightness of LEDs with different luminous efficiencies in the same pixel unit 10 and the duration of their luminous phase te is used to improve the display effect. For example, by adjusting the first luminous control signal transmitted on the first luminous control signal line EL1, the sum of the durations of the luminous phase te of N first luminous elements D1 can be controlled within the display time F0 of one frame in the first mode DP1, so that the sum of the durations of the luminous phase te of N first luminous elements D1 can be greater than the sum of the durations of the luminous phase te of M second luminous elements D2, and the difference between the two can be related to the difference in luminous efficiency and the ratio of the number of first luminous elements D1 and second luminous elements D2. This is beneficial to balancing the integral value of the luminous brightness of LEDs with different luminous efficiencies in the same pixel unit 10 and the duration of their luminous phase te, thereby improving the display effect.

[0089] Based on the above embodiments, referring further to Figures 2-6 and Figure 11, the display panel 100 also includes a light-emitting control circuit 20; the light-emitting control circuit 20 includes multiple cascaded first light-emitting control units 21 and multiple cascaded second light-emitting control units 22; each first light-emitting control unit 21 is electrically connected to each first light-emitting control signal line EL1; each first light-emitting control unit 22 provides a light-emitting control signal to each first light-emitting control signal line EL1, and the enable level time of each light-emitting control signal provided by each first light-emitting control unit 21 is shifted sequentially; each second light-emitting control unit 22 is electrically connected to each second light-emitting control signal line EL2; each second light-emitting control unit 22 provides a light-emitting control signal to each second light-emitting control signal line EL2, and the enable level time of each light-emitting control signal provided by each second light-emitting control unit 22 is shifted sequentially.

[0090] For example, each first light-emitting control unit 21 provides a first light-emitting control signal to each first light-emitting control signal line EL1. The first light-emitting control signals are shifted sequentially. The duration of the light-emitting phase of the first light-emitting element D1 in each row within the display time F0 of one frame can be controlled by the first light-emitting control signal. In different display modes, the duration of the light-emitting phase of the first light-emitting element D1 within the display time F0 of one frame can be the same or different, and can be designed according to actual needs. This embodiment of the invention does not specifically limit this. Each second light-emitting control unit 22 provides a second light-emitting control signal to each second light-emitting control signal line EL2. The second light-emitting control signals are shifted sequentially. The duration of the light-emitting phase of the second light-emitting element D2 in each row within the display time F0 of one frame can be controlled by the second light-emitting control signal. In different display modes, the duration of the light-emitting phase of the second light-emitting element D2 within the display time F0 of one frame can be the same or different, and can be designed according to actual needs. This embodiment of the invention does not specifically limit this. Thus, in the first mode DP1, within the display time F0 of one frame, by controlling the duration of the light emission phase of the first light emission element D1 of each row of sub-pixels 11 through each first light emission control unit 21, and by controlling the duration of the light emission phase of the second light emission element D2 of each row of sub-pixels 11 through each second light emission control unit 22, the sum of the durations of the light emission phase te of the first light emission element D1 in the same pixel unit 10 can be greater than the sum of the durations of the light emission phase te of the second light emission element D2, or the sum of the durations of the light emission phases of N first light emission elements in the same pixel unit can be greater than the sum of the durations of the light emission phases of M second light emission elements, where N>M≧1.

[0091] It is understandable that within the display time F0 of one frame, the duration of the light-emitting phase te of a first light-emitting element D1 and the duration of the light-emitting phase te of a second light-emitting element D2 in the same pixel unit 10 can be the same or different. For example, the display mode of the display panel 100 includes a first mode DP1. In the first mode DP1, within the display time F0 of one frame, the light-emitting control signal provided by the first light-emitting control signal line EL is different from the light-emitting control signal provided by the second light-emitting control signal line EL2. This results in the duration of the light-emitting phase te of the first light-emitting element D1 and the duration of the light-emitting phase te of the second light-emitting element D2 in the same pixel unit 10 being different within the display time F0 of one frame. This can compensate for the difference in display brightness between the first light-emitting element D1 and the second light-emitting element D2 due to the different luminous efficiencies of the two light-emitting elements under the same display grayscale. This is beneficial for improving or balancing the color shift problem caused by the different luminous efficiencies of the first light-emitting element D1 and the second light-emitting element D2. For another example, the display mode of the display panel 100 includes a first mode... DP1, pixel unit 10 includes N first light-emitting elements D1 and M second light-emitting elements D2, N>M≥1. The light-emitting control signal provided by the first light-emitting control signal line EL and the light-emitting control signal provided by the second light-emitting control signal line EL2 can be the same. This allows the duration of the light-emitting phase te of the first light-emitting element D1 in the same pixel unit 10 to be equal to the duration of the light-emitting phase te of the second light-emitting element D2 within the display time F0 of one frame in the first mode DP1. However, the sum of the durations of the light-emitting phases te of all the first light-emitting elements D1 is different from the sum of the durations of the light-emitting phases te of all the second light-emitting elements D2. This can still compensate for the difference in luminous efficiency between the first light-emitting element D1 and the second light-emitting element D2 under the same display grayscale, which is beneficial to improving or balancing the color shift problem caused by the difference in luminous efficiency between the first light-emitting element D1 and the second light-emitting element D2.

[0092] In an optional embodiment, the display mode of the display panel 100 includes a first mode DP1. In the first mode DP1, within the display time F0 of one frame, the duration for which the light emission control signal provided by the first light emission control signal line EL1 controls the first driving circuit DC1 to enter the light emission stage te is a third duration t3, and the duration for which the light emission control signal provided by the second light emission control signal line EL2 controls the second driving circuit DC2 to enter the light emission stage te is a fourth duration t4; wherein, the third duration t3 is greater than the fourth duration t4, as shown in Figure 4.

[0093] For example, in the first mode DP1, the luminous efficiency of the first light-emitting element D1 is less than that of the second light-emitting element D2. By setting the third duration t3 to be greater than the fourth duration t4, the integral value of the luminous brightness and luminous time of the first light-emitting element D1 can be increased within the display time F0 of one frame, thereby improving the perceived brightness of the first light-emitting element D1 as perceived by the human visual system, compensating for the insufficient brightness of the first light-emitting element D1, and improving the display effect.

[0094] It should be noted that, referring to Figures 5 and 6, in the first mode DP1, within the display time F0 of one frame, the light emission control signal Emit(1) received by the driving circuit DC1 electrically connected to the first light-emitting element D1 includes multiple valid pulses, and / or, when the light emission control signal Emit(2) received by the driving circuit DC2 electrically connected to the second light-emitting element D2 includes multiple valid pulses, the third duration t3 is the sum of the widths of the multiple valid pulses of the light emission control signal Emit(1) within the display time F0 of one frame, and / or, the fourth duration t4 is the sum of the widths of the multiple valid pulses of the light emission control signal Emit(2) within the display time F0 of one frame.

[0095] Optionally, Figure 12 is a timing diagram of a display panel in the second mode provided by an embodiment of the present invention, and Figure 13 is a timing diagram of another display panel in the second mode provided by an embodiment of the present invention. Referring to Figures 1-3, 7, 12 and 13, the display mode of the display panel 100 also includes a second mode DP2. In the second mode DP2, within the display time F0 of one frame, the sum of the durations of the light-emitting phases te of the first light-emitting element D1 is less than or equal to the sum of the durations of the light-emitting phases te of the second light-emitting element D2, or, in the same pixel unit 10, the sum of the durations of the light-emitting phases te of N first light-emitting elements D1 is less than or equal to the sum of the durations of the light-emitting phases te of M second light-emitting elements D2, where N>M≧1.

[0096] In this context, the second mode DP2 refers to a display module where the difference in luminous efficiency between the first light-emitting element D1 and the second light-emitting element D2 is relatively small. For example, the second mode DP2 is used when the display panel 100 is in a low-temperature environment, or when the display panel 100 is displaying an image, resulting in a low temperature due to low brightness or low frequency. In this case, the difference in luminous efficiency between the red-emitting first light-emitting element D1 and the blue or green-emitting second light-emitting element D2 is small. If adjusting the data signal Data alone can balance the color shift caused by the difference in luminous efficiency, then the illumination duration of different LEDs can be set to the same duration. In one exemplary embodiment, the second mode DP2 is a low-brightness display mode where the driving current of the red-emitting first light-emitting element D1 is small, and the driving current corresponding to its highest grayscale level has not yet reached its upper limit and cannot be adjusted. Adjusting the data signal Data alone can solve the color shift problem. In another exemplary embodiment, the second mode DP2 is used in low-refresh-rate display modes or other display modes with lower image quality requirements. Adjusting the data signal Data alone can achieve a basic balance in brightness. In another exemplary embodiment, the sensing temperature of the display panel 100 in the second mode DP2 is lower than that in the first mode. In other words, the luminous efficiency of the first light-emitting element D1 decreases less in the second mode DP2, while the luminous efficiency of the first light-emitting element D1 decreases more in the first mode DP1.

[0097] For example, taking the driving transistor M1 in the DC drive circuit as a P-channel transistor, the driving current in the light-emitting element LED is negatively correlated with the magnitude of the data signal Data written to the driving transistor M1. That is, the larger the data signal Data, the smaller the driving current of the light-emitting element LED when it is in the light-emitting stage te, and the smaller the data signal Data, the larger the driving current of the light-emitting element LED when it is in the light-emitting stage te. Therefore, in the second mode DP2, if the luminous efficiency of the first light-emitting element D1 is less than that of the second light-emitting element D2, and the difference between the two is small, the driving current of the light-emitting element LED when it is in the light-emitting stage te can be increased by reducing the data signal Data of the first light-emitting element D1, thereby increasing the brightness of the first light-emitting element D1, thus compensating for the low luminous efficiency of the first light-emitting element D1, and also achieving the effect of improving or balancing the color shift problem caused by the different luminous efficiencies of light-emitting elements LEDs of different colors. At this time, under the second mode DP2, within the display time F0 of one frame, the sum of the durations of the light-emitting phases te of the first light-emitting element D1 can be less than or equal to the sum of the durations of the light-emitting phases te of the second light-emitting element D2, as shown in Figures 1 and 12; or, under the second mode DP2, within the display time F0 of one frame, the sum of the durations of the light-emitting phases te of one first light-emitting element D1 can be less than the sum of the durations of the light-emitting phases te of one second light-emitting element D2. In the same pixel unit, the sum of the durations of the light-emitting phases te of N first light-emitting elements D1 is less than or equal to the sum of the durations of the light-emitting phases te of M second light-emitting elements D2, where N>M≧1, as shown in Figures 7 and 13.

[0098] It should be noted that the embodiments of the present invention are not limited to the relationship between the sum of the durations of the light-emitting stages te of the first light-emitting element D1 and the sum of the durations te of the light-emitting stages te of the second light-emitting element D2 within the display time F0 of one frame in the second mode DP2. In the second mode DP2, the sum of the durations te of the light-emitting stages te of the first light-emitting element D1 within the display time F0 of one frame can be greater than, less than, or equal to the sum of the durations te of the light-emitting stages te of the second light-emitting element D2.

[0099] Based on the above embodiments, and continuing to refer to Figures 1-3, 7, 12, and 13, the driving circuit DC includes a first driving circuit DC1 and a second driving circuit DC2; the first driving circuit DC1 is electrically connected to the first light-emitting element D1, and the second driving circuit DC2 is electrically connected to the second light-emitting element D2; for the preset display grayscale, in the first mode DP1, the second driving circuit DC2 receives a third data signal, and in the second mode DP2, the second driving circuit DC2 receives a fourth data signal; the third data signal and the fourth data signal are different.

[0100] The display grayscale refers to the brightness level presented by the LED light-emitting element when it emits light for display. The brightness level presented by the LED is positively correlated with the LED's luminous intensity. For the same LED within the same emission time, the greater the luminous intensity of the LED, the higher the brightness level presented by the LED. The preset display grayscale can be the brightness level that the LED needs to present during actual display, or the brightness level that the LED needs to present during testing.

[0101] Understandably, the luminous efficiency of the second light-emitting element D2 differs under different display modes. In the first mode DP1, the mapping relationship between the data signal Data received by the second driving circuit DC2 and the display grayscale of the second light-emitting element D2 is a first mapping relationship. In the second mode DP2, the mapping relationship between the data signal Data received by the second driving circuit DC2 and the display grayscale of the second light-emitting element D2 is a second mapping relationship. The first and second mapping relationships are different. Under the same preset display grayscale, the driving current and / or emission time required by the second light-emitting element D2 are different in different display modes, that is, the third data signal and the fourth data signal are different, and / or the emission time is different.

[0102] For example, taking the driving transistor M1 in the driving circuit DC as a P-channel transistor, the luminous efficiency of the second light-emitting element D2 in the first mode DP1 is less than that in the second mode DP2, and the difference is small. That is, when the display panel 100 switches from the second display mode DP2 to the first display mode DP1, the luminous efficiency of the second light-emitting element D2 is attenuated to a certain extent. This can make the third data signal received by the second driving circuit DC2 in the first mode DP1 less than the fourth data signal received by the second driving circuit DC2 in the second mode DP2. This increases the driving current provided by the second driving circuit DC2 to the second light-emitting element D2 in the first mode DP1, thereby increasing the luminous brightness of the second light-emitting element D2 to compensate for the attenuation of the luminous efficiency of the second light-emitting element D2 in the first mode DP1. This allows the second light-emitting element D1 to achieve the same display luminous brightness in the first mode DP1 and the second mode DP2, thereby improving the display accuracy of the second light-emitting element D2 and mitigating the color shift problem caused by the attenuation of the luminous efficiency of the second light-emitting element D2.

[0103] It is understood that, compared with the first light-emitting element D1, the luminous efficiency of the second light-emitting element D2 is more stable and hardly decays with changes in display mode, or the decay is small. Therefore, when switching display modes, it is not necessary to compensate for the decay of the luminous efficiency of the second light-emitting element D2 by adjusting the light emission time. Alternatively, the decay of the luminous efficiency of the second light-emitting element D2 can be compensated by adjusting the data signal, as described in the above embodiments. Or, if there is a more extreme display mode that causes a large decay of the luminous efficiency of the second light-emitting element D2, the compensation scheme for the decay of the luminous efficiency of the first light-emitting element D1 can be referred to in the embodiments of the present invention. The following embodiments will not describe the compensation scheme for the decay of the luminous efficiency of the second light-emitting element D2.

[0104] Optionally, referring to Figures 1, 7, and 11, the LED light-emitting element further includes a third light-emitting element D3; the first light-emitting element D1, the second light-emitting element D2, and the third light-emitting element D3 emit different colors. In one embodiment, the first light-emitting element D1 emits red, the second light-emitting element D2 emits green, and the third light-emitting element D3 emits blue; in another embodiment, the first light-emitting element D1 emits red, the second light-emitting element D2 emits blue, and the third light-emitting element D3 emits green. In this case, as the display mode changes, the luminous efficiency of the first light-emitting element D1 decreases significantly, resulting in a situation where the luminous efficiency of the first light-emitting element D1 is lower than that of the second and third light-emitting elements D2.

[0105] In an optional embodiment, FIG14 is a timing diagram of another display panel in the first mode provided by the embodiment of the present invention. Referring to FIG1-FIG3, FIG7 and FIG14, in the first mode DP1, within the display time F0 of one frame, the sum of the durations of the light-emitting phases te of the first light-emitting element D1 is greater than the sum of the durations of the light-emitting phases te of the third light-emitting element D3, or, in the same pixel unit 10, the sum of the durations of the light-emitting phases te of N first light-emitting elements D1 is greater than the sum of the durations of the light-emitting phases te of Q third light-emitting elements D3; wherein, N>Q≧1.

[0106] Specifically, in the first mode DP1, the luminous efficiency of the first light-emitting element D1 is less than that of the second light-emitting element D2, and the luminous efficiency of the first light-emitting element D1 is less than that of the third light-emitting element D3. At this time, in the first mode DP1, within the display time F0 of one frame, the sum of the durations of the light-emitting phases te of the first light-emitting element D1 is set to be greater than the sum of the durations te of the light-emitting phases te of the second light-emitting element D2, and the sum of the durations te of the light-emitting phases te of the first light-emitting element D1 is set to be greater than the sum of the durations te of the light-emitting phases te of the third light-emitting element D3. This makes the duration for which the human eye observes the light from the first light-emitting element D1 longer than the duration for which it observes the light from the second light-emitting element D2 or the third light-emitting element D3. This increases the total integral value of the light-emitting brightness and light-emitting time of the first light-emitting element D1 in the same pixel unit 10, thereby increasing the perceived brightness of the first light-emitting element D1 as perceived by the human visual system and compensating for the insufficient light-emitting brightness of the first light-emitting element D1. Alternatively, in the first mode DP1, within the display time F0 of one frame, the sum of the durations te of the light-emitting phases te of N first light-emitting elements D1 is set to be greater than the sum of the durations te of the light-emitting phases te of Q third light-emitting elements D3, and the sum of the durations te of the light-emitting phases te of the first light-emitting element ... The number N of the first light-emitting elements D1 in pixel unit 0 is greater than the number Q of the third light-emitting elements D3 in pixel unit 10. This makes it so that in the first mode DP1, within the display time F0 of one frame, the sum of the duration of the light-emitting phase te of all the first light-emitting elements D1 in the same pixel unit 10 is greater than the sum of the duration of the light-emitting phase te of all the third light-emitting elements D3. This can improve the total integral value of the luminance and luminance time of all the first light-emitting elements D1 in the same pixel unit 10. This makes the sum of the integral values ​​of the luminance of N first light-emitting elements D1 and the duration of their light-emitting phase te equal to the sum of the integral values ​​of the luminance of Q third light-emitting elements D3 and the duration of their light-emitting phase te under the same driving current. The perceived luminance of the first light-emitting elements D1 and the perceived luminance of the third light-emitting elements D3 perceived by the human visual system are the same, thereby compensating for the lack of luminance of the first light-emitting elements D1 and improving or balancing the color shift problem caused by the difference in luminous efficiency between the first light-emitting elements D1 and the third light-emitting elements D3.

[0107] Based on the above embodiments, referring again to Figures 1-3, 7, and 14, within the display time F0 of one frame, the sum of the durations of the light-emitting phases te of the third light-emitting element D3 is equal to the sum of the durations of the light-emitting phases te of the second light-emitting element D2, or, in the same pixel unit 10, the sum of the durations of the light-emitting phases te of M second light-emitting elements D2 is equal to the sum of the durations of the light-emitting phases te of Q third light-emitting elements D3.

[0108] Specifically, the luminous efficiency of the second light-emitting element D2 is relatively close to that of the third light-emitting element D3. Therefore, there is no need to balance the color shift caused by the difference in luminous efficiency between the second light-emitting element D2 and the third light-emitting element D3. Alternatively, the color shift caused by the difference in luminous efficiency between the second light-emitting element D2 and the third light-emitting element D3 can be balanced simply by adjusting the data signal Data written by the second driving circuit DC2, which is electrically connected to the second light-emitting element D2, and / or the data signal Data written by the third driving circuit DC3, which is electrically connected to the third light-emitting element D3. There is no need to adjust the light emission duration of the second light-emitting element D2 and the third light-emitting element D3.

[0109] It is understood that the luminous efficiency of the third light-emitting element D3 is relatively close to that of the second light-emitting element D2, and the light-emitting duration of the third light-emitting element D3 can be equal to the light-emitting duration of the second light-emitting element D2. In one embodiment, the number M of the second light-emitting elements D2 in the same pixel unit 10 can be equal to the number Q of the third light-emitting elements D3. Within the display time F0 of one frame, the duration of the light-emitting phase te of each second light-emitting element D2 in the same pixel unit 10 is equal to the duration of the light-emitting phase te of each third light-emitting element D3. In another embodiment, referring to FIG11, the display panel 100 further includes multiple light-emitting control lines EL. The second driving circuit DC2 and the third driving circuit DC3 located in the same row or the same pixel unit 10 can be electrically connected to the same light-emitting control line EL to receive the same light-emitting control signal Emit(2). In addition, the second driving circuit DC2 and the third driving circuit DC3 located in the same row or the same pixel unit 10 can also receive the same first scan signal S1 and second scan signal S2. Therefore, the setting method of the light-emitting stage te of the third light-emitting element D3 can be the same as the setting method of the light-emitting stage te of the second light-emitting element D2. For ease of description, the following embodiments will only be described by way of example for the first light-emitting element D1 and the second light-emitting element D2, and the third light-emitting element D3 will not be described.

[0110] Optionally, Figure 15 is a timing diagram of a pixel unit in the first mode provided by an embodiment of the present invention, Figure 16 is a timing diagram of another pixel unit in the first mode provided by an embodiment of the present invention, and Figure 17 is a timing diagram of another pixel unit in the first mode provided by an embodiment of the present invention. Referring to Figures 1-3 and Figures 15-17, the driving circuit DC includes a first driving circuit DC1 and a second driving circuit DC2; the first driving circuit DC1 is electrically connected to the first light-emitting element D1, and the second driving circuit DC2 is electrically connected to the second light-emitting element D2; in the first mode DP1, the display time F0 of one frame of the display panel 100 includes a first time period t1 and a second time period t2; in the first time period t1, the driving process of the first driving circuit DC1 includes a light-emitting stage te, and the driving process of the second driving circuit DC2 includes a light-emitting stage te; in the second time period t2, the driving process of the first driving circuit DC1 includes a light-emitting stage te, and the driving process of the second driving circuit DC does not include a light-emitting stage te.

[0111] In one possible implementation, referring to Figure 17, a frame includes multiple subframes. In each subframe, data is written to and light is emitted from each row of driving circuits by scanning line by line. The subframes together constitute the display of a frame. One subframe includes a first time period t1, and another subframe includes a second time period t2.

[0112] In one possible implementation, referring to Figures 15 and 16, a frame includes a refresh frame and a hold frame. The refresh frame includes a process of rewriting the signal to the gate of the driving transistor, while the hold frame does not include a process of rewriting the signal to the gate of the driving transistor. The refresh frame may include a first time period t1, and the hold frame may include a second time period t2.

[0113] In one possible implementation, referring to FIG15, within the display time F0 of a frame, the driving process of the first driving circuit DC1 includes multiple light-emitting stages, one of which is located in a first time period t1 and the other is located in a second time period t2.

[0114] In one possible implementation, referring to FIG16, the duration of the light-emitting phase of the first driving circuit DC1 is longer than the duration of the light-emitting phase of the second driving circuit DC2. The time period during which the light-emitting phases of the first driving circuit DC1 and the second driving circuit DC2 overlap is a first time period t1, and the time period during which the light-emitting phases of the first driving circuit DC1 and the second driving circuit DC2 do not overlap is t2.

[0115] As shown in Figure 15, in the first time period t1 under the first mode DP1, the effective pulse time of the light emission control signal Emit(1) received by the first driving circuit DC1 can be different from the effective pulse time of the light emission control signal Emit(1) received in the second time period t2 under the first mode DP1, so that the duration of the light emission stage te of the first light emission element D1 electrically connected to the first driving circuit DC1 in the first time period t1 can be different from the duration of its light emission stage in the second time period t2. At this time, there is an interval time between the light emission stage te of the first driving circuit DC1 in the first time period t1 and the light emission stage te in the second time period t2; or, as shown in Figure 16, in the first mode DP1, there is no interval time between the light emission stage te of the first driving circuit DC1 in the first time period t1 and the light emission stage te in the second time period t2, that is, the light emission stage te of the first time period t1 and the light emission stage of the second time period t2 are continuous time periods.

[0116] Thus, in the first mode DP1, within the display time F0 of one frame of the display panel 100, by ensuring that the first light-emitting element D1 includes a light-emitting phase te in both the first time period t1 and the second time period t2, while the second light-emitting element D2 only includes a light-emitting phase te in the first time period t1, the sum of the duration of the light-emitting phase of the first light-emitting element D1 in the first time period t1 and the duration of the light-emitting phase te in the second time period t2 is greater than the duration of the light-emitting phase te of the second light-emitting element D2 in the first time period t1. This increases the total integral value of the luminous brightness and luminous time of the first light-emitting element D1, thereby improving the perceived brightness of the first light-emitting element D1 as perceived by the human visual system. This compensates for the problem of low luminous brightness caused by the low luminous efficiency of the first light-emitting element D1, and improves or balances the color shift problem caused by the difference in luminous efficiency between the first light-emitting element D1 and the second light-emitting element D2.

[0117] Understandably, in the first mode DP1, the duration of the light-emitting phase te of the first light-emitting element D1 within the first time period t1 can be greater than, equal to, or less than the duration of the light-emitting phase te of the second light-emitting element D2 within the first time period t1, satisfying the condition that, within the display time F0 of one frame in the first mode DP1, the sum of the durations of the light-emitting phases te of the first light-emitting element D1 is greater than the sum of the durations of the light-emitting phases te of the second light-emitting element D2. If, in the first mode DP1, the duration of the light-emitting phase te of the first light-emitting element D1 within the first time period t1 is greater than or equal to the duration of the light-emitting phase te of the second light-emitting element D2 within the first time period t1, then the duration of the light-emitting phase te of the first light-emitting element D1 within the second time period t2 must be greater than zero.

[0118] In one embodiment, the duration of the light-emitting phase te of the first driving circuit DC1 in the second time period t2 is the first duration, and the duration of the light-emitting phase te of the second driving circuit DC2 in the first time period t1 is the second duration. The first duration is greater than or equal to one-thousandth of the second duration, or the first duration may also be greater than or equal to the minimum detectable time. By setting the first duration to be greater than or equal to one-thousandth of the second duration, the duration of the light-emitting phase te of the first driving circuit D1 in the second time period t2 under the first mode DP1 can be one-thousandth of the second duration. According to actual needs, the duration of the light-emitting phase te of the first driving circuit D1 in the second time period t2 can be set to two-thousandths, three-thousandths, ..., ninety-nine-thousandths, one-tenth, ..., etc., of the second duration. Thus, based on the difference in luminous efficiency between the first light-emitting element D1 and the second light-emitting element D2, the duration of the first driving circuit D1 in the second time period t2 can be adjusted. The light-emitting phase te within the interval t2 is adjusted with high precision, thereby achieving a high-precision color shift balance, which is beneficial to improving the display effect of the display panel 100. Similarly, by setting the first duration to be greater than or equal to the minimum detectable time, in the first mode DP1, the duration of the light-emitting phase te of the first driving circuit D1 within the second time interval t2 can be a multiple of the minimum detectable time, thereby achieving a high-precision adjustment of the light-emitting phase te of the first driving circuit D1 within the second time interval t2, which in turn achieves a high-precision color shift balance and improves the display effect.

[0119] For example, continuing to refer to Figures 15 and 16, within the first time period t1, the driving process of the first driving circuit DC1 can simultaneously include a data writing phase td and a light-emitting phase te, and the driving process of the second driving circuit DC2 can simultaneously include a data writing phase td and a light-emitting phase te. Within the second time period t2, the driving process of the first driving circuit DC1 can only include the light-emitting phase te, excluding the data writing phase td, and the driving process of the second driving circuit DC can exclude neither the data writing phase td nor the light-emitting phase te. At this time, within the display time F0 of one frame, the data signal Data stored in the light-emitting phase te of the first driving circuit DC in the first time period t1 is equal to the data signal Data stored in the light-emitting phase te of the second time period t2. That is, the driving current provided by the first driving circuit DC1 to the first light-emitting element D1 during the light-emitting phase te of the first time period t1 is equal to the driving current provided by the first driving circuit DC1 to the first light-emitting element D1 during the light-emitting phase te of the first time period t1, and the brightness of the light emitted by the first light-emitting element D1 during the light-emitting phase te of the first time period t1 is equal to the brightness of the light emitted by the first light-emitting element D1 during the light-emitting phase te of the second time period t2. When the difference in luminous efficiency between the first light-emitting element D1 and the second light-emitting element D2 changes, the duration of the light-emitting phase te of the first driving circuit DC1 during the first time period t1, or the duration of the light-emitting phase te of the first driving circuit DC1 during the second time period t2, can be adjusted. Alternatively, the driving current provided by the first driving circuit DC1 to the first light-emitting element D1 during the light-emitting phase te of the first time period t1, and the driving current provided by the first driving circuit DC1 to the first light-emitting element D1 during the light-emitting phase te of the second time period t2, can be adjusted simultaneously to balance the color shift problem caused by the difference in luminous efficiency between the first and second light-emitting elements, to adapt to the changes in luminous efficiency of the first light-emitting element D1 and / or the second light-emitting element D2, and to improve the display effect. The duration of the first time period t1 can be the same as or different from the duration of the second time period t2.

[0120] It should be noted that Figures 15 and 16 only illustrate, by way of example, an implementation in which the display time F0 of a frame of the display panel 100 includes a first time period t1 and a second time period t2. In other implementations, under the first mode DP1, the display time F0 of a frame of the display panel 100 may include multiple first time periods t1 and / or multiple second time periods t2. The duration of each first time period t1 may be the same or different, and the duration of each second time period t2 may be the same or different. This embodiment of the invention does not limit the duration of the first time period t1 or the duration of the second time period t2.

[0121] Based on the above embodiments, FIG18 is a timing diagram of a pixel unit in the second mode provided by the embodiment of the present invention. Referring to FIG18, when the display mode of the display panel 100 further includes the second mode DP2, under the second mode DP2, the display time F0 of a frame includes the first time period t1 and does not include the second time period t2.

[0122] For example, in the second mode DP2, the temperature of the display panel 100 is the temperature at which it has higher operating efficiency, while in the first mode DP1, the temperature of the display panel 100 is the temperature at which it has lower operating efficiency. The luminous efficiency of the first light-emitting element D1 in the second mode DP2 can be greater than that in the first mode DP1, and the difference between the luminous efficiency of the first light-emitting element D1 and the luminous efficiency of the second light-emitting element D2 is smaller in the second mode DP2. In one embodiment, in the second mode DP2, within the display time F0 of one frame, the sum of the durations of the light-emitting stages te of the first light-emitting element D1 can be equal to the sum of the durations of the light-emitting stages te of the second light-emitting element D2. In this case, the luminous efficiency of the first light-emitting element D1 and the luminous efficiency of the second light-emitting element D2 can be balanced simply by adjusting the magnitude of the data signal Data.

[0123] In another embodiment, FIG19 is a timing diagram of another pixel unit in the second mode provided by the present invention. Referring to FIG19, in the second mode DP2, in the display time F0 of a frame, after the data writing stage td, a part of the first time period t1 includes the time period of the light-emitting stage te of the first light-emitting element D1 and the light-emitting stage te of the second light-emitting element D2. Another part of the first time period t1 does not include the time period of the light-emitting stage te of the first light-emitting element D1 or the light-emitting stage te of the second light-emitting element D2. That is, the part of the time after the data writing stage td is the time period when neither the first light-emitting element D1 nor the second light-emitting element D2 emits light. In other words, during a part of the first time period t1 after the data writing stage td, the driving circuit DC can be controlled to stop providing driving current to the light-emitting element LED to reduce the power consumption of the display panel 100.

[0124] It is understood that in other embodiments, under the first mode DP1, the first time period t1 and the second time period t2 may simultaneously include the light-emitting phase te of the first light-emitting element D1, and the first time period t1 and the second time period t2 may simultaneously include the light-emitting phase te of the second light-emitting element D2, as shown in Figure 20. Under the first mode DP1, the sum of the durations of the light-emitting phases te of the first light-emitting element D1 within the display time F0 of one frame is greater than the sum of the durations of the light-emitting phases te of the second light-emitting element D2.

[0125] For ease of explanation, unless otherwise specified, the following embodiments are all based on the second time period t2 excluding the light-emitting stage te of the second light-emitting element D2, that is, the driving process of the second driving circuit DC within the second time period t2 does not include the light-emitting stage te.

[0126] Optionally, referring to Figures 1-3 and Figure 17, during the first time period t1, the driving process of the first driving circuit DC1 includes a first data writing stage td1, during which the first driving circuit DC receives a first data signal; during the second time period t2, the driving process of the first driving circuit DC1 includes a second data writing stage td2, during which the first driving circuit DC1 receives a second data signal.

[0127] For example, during the first time period t1, the driving process of the first driving circuit DC1 includes a light-emitting stage te, which is designated as the first light-emitting stage te1; during the second time period t2, the driving process of the first driving circuit DC1 includes a light-emitting stage te, which is designated as the second light-emitting stage te2. During the first data writing stage td1, the first driving circuit DC1 can write and store a first data signal; during the first light-emitting stage te1, the first driving circuit DC1 provides a corresponding driving current to the first light-emitting element D1 according to the first data signal, and the first light-emitting element D1 can emit light according to the first data signal. During the second data writing stage td2, the first driving circuit DC1 can write and store a second data signal; during the second light-emitting stage te2, the first driving circuit DC1 provides a corresponding driving current to the first light-emitting element D1 according to the second data signal, and the first light-emitting element D1 can emit light according to the second data signal. In this way, the voltage of the data signal supplied to the first driving circuit DC1 can be set according to actual needs to ensure that the first driving circuit DC1 can drive the first light-emitting element D1 to emit light accurately in both the first light-emitting stage te1 and the second light-emitting stage te2, thereby improving the display light-emitting accuracy of the first light-emitting element D1 and thus improving the display effect of the display panel 100.

[0128] In an optional embodiment, the first data signal can be the same as the second data signal. In this case, within the display time F0 of the same frame under the first mode DP1, the brightness of the light emitted by the first light-emitting element D1 in the first light-emitting stage te1 is consistent with the brightness of the light emitted in the second light-emitting stage te2. Thus, by simultaneously adjusting the first data signal and the second data signal, or by adjusting the duration of the first light-emitting element D1 in the first light-emitting stage te1 and / or the second light-emitting stage te2, the integral value of the luminous brightness and luminous time of the first light-emitting element D1 is increased, thereby increasing the perceived brightness of the first light-emitting element D1 as perceived by the human visual system. This compensates for the change in the luminous efficiency of the first light-emitting element D1 and balances the color shift problem caused by the difference in luminous efficiency between the first light-emitting element D1 and the second light-emitting element D2.

[0129] In another optional embodiment, the second data signal is different from the first data signal. That is, the data signals received by the first driving circuit DC1 in the first data writing stage td1 and the second data writing stage td2 within the same frame display time are different. This causes the driving current provided to the first light-emitting element D1 in the first light-emitting stage te1 to be different from the driving current provided to the first light-emitting element D1 in the second light-emitting stage te2. Consequently, the brightness of the light emitted by the first light-emitting element D1 in the first light-emitting stage te1 is different from the brightness of the light emitted in the second light-emitting stage te2. Thus, when the luminous efficiency of the first light-emitting element D1 changes, the driving current provided by the first driving circuit DC1 to the first light-emitting element D1 in the first light-emitting stage te1 and / or to the second light-emitting element D2 in the second light-emitting stage te2 can be adjusted by regulating the magnitude of the first data signal and / or the second data signal, thereby compensating for the change in brightness caused by the change in the luminous efficiency of the first light-emitting element D1. In one embodiment, when the luminous efficiency of the first light-emitting element D1 changes, the brightness change caused by the change in the luminous efficiency of the first light-emitting element D1 is compensated by adjusting the second data signal provided to the first driving circuit DC1 during the second data writing stage td2.

[0130] It should be noted that whether the first data signal and the second data signal mentioned in the above embodiments are the same is based on the same grayscale displayed in a frame. In other words, the first data signal is used to determine the driving current provided by the first driving circuit DC1 to the first light-emitting element D1 in the first light-emitting stage te1, thereby determining the luminous brightness of the first light-emitting element D1 in the first light-emitting stage te1; the second data signal is used to determine the driving current provided by the first driving circuit DC1 to the first light-emitting element D1 in the second light-emitting stage te2, thereby determining the luminous brightness of the first light-emitting element D1 in the second light-emitting stage te2; the first light-emitting stage te1 and the second light-emitting stage te2 are both within the same frame display time F0, and the displayed grayscale is related to the luminous brightness and light-emitting time of the light-emitting element LED within the frame display time F0. Regardless of how the luminous brightness of the first light-emitting element D1 changes within the frame display time F0, the integral value of the luminous brightness and time of the first light-emitting element D1 within the frame display time F0 presents a display grayscale.

[0131] Optionally, the first mode includes a first sub-mode and a second sub-mode. For the preset display grayscale, the second data signal in the first sub-mode and the second data signal in the second sub-mode are different.

[0132] The first and second sub-modes can be display modes for different display panel temperatures, different refresh rates, or different brightness levels, such as a high-brightness mode used in bright environments or a low-brightness mode used in darker environments. The preset grayscale refers to a specific brightness level that the light-emitting element needs to present during the actual display time of one frame. The actual brightness level presented by the light-emitting element is related to its brightness and its emission time. The higher the brightness of the light-emitting element during the display time of one frame, the higher the brightness level it presents; conversely, the longer the emission time, the higher the brightness level it presents. This preset grayscale can be a specific brightness level that the light-emitting element needs to present during display or during testing.

[0133] For example, if the luminous efficiency of the first light-emitting element in the first sub-mode is less than that in the second sub-mode, the second data signal can be adjusted so that the driving current provided by the first driving circuit to the first light-emitting element in the second light-emitting stage of the second sub-mode is less than that provided by the first driving circuit to the first light-emitting element in the second light-emitting stage of the first sub-mode. This makes the luminous brightness of the first light-emitting element in the second light-emitting stage of the second sub-mode different from that in the second light-emitting stage of the first sub-mode, thereby improving or balancing the luminous brightness of the first light-emitting element in the first light-emitting stage of different sub-modes in the first mode. This ensures that the brightness level presented by the first light-emitting element in the second sub-mode is the same as that presented by the first light-emitting element in the first sub-mode, and both can achieve the preset display grayscale.

[0134] It is understandable that when the display mode of the display panel switches from the first sub-mode to the second sub-mode, or vice versa, the first data signal can be adjusted to control the brightness change of the first light-emitting element in the first light-emitting stage during the switching between the second and first sub-modes. This ensures that the brightness level presented by the first light-emitting element is the same in both the first and second sub-modes, achieving the preset grayscale. The adjustment method of the first data signal is the same as that of the second data signal, and will not be described again here. In one embodiment, the first data signal in the first sub-mode is the same as that in the second sub-mode for the preset grayscale. Thus, when the first light-emitting element needs to present the preset grayscale brightness in both the first and second sub-modes, the driving current provided by the first driving circuit DC1 to the first light-emitting element according to the first data signal is consistent with the driving current provided by the first driving circuit DC1 according to the second data signal. This helps to improve the consistency of the display brightness of the first light-emitting element in different sub-modes of the first mode, thereby improving the display consistency of the display panel. Meanwhile, when the luminous efficiency of the first light-emitting element is different in the second sub-mode and the first sub-mode, only the second data signal written to the first driving circuit in the second data writing stage of the different sub-mode can be adjusted to compensate for the luminous brightness of the first light-emitting element in the first light-emitting stage of the different sub-mode, so that the brightness level presented by the first light-emitting element is the same during the display time of a frame in different sub-modes, and the preset display grayscale is achieved.

[0135] It is understandable that the first data signal may only be related to the image data received by the display panel, while the second data signal may be related to the display mode. For example, the first data signal may be a normal image data signal, while the second data signal may be a compensation data signal provided based on the influence of the display screen temperature. In different sub-modes, when the luminous efficiency of the first light-emitting element changes, the brightness of the first light-emitting element in the first emission stage will change with the change in luminous efficiency, causing the brightness level presented by the first light-emitting element to change within the display time of one frame. By adjusting the second data signal, the brightness of the first light-emitting element in the first emission stage can change in the opposite direction with the change in luminous efficiency, thus compensating for the change in brightness of the first light-emitting element in the first emission stage. This compensates for the change in luminous efficiency of the first light-emitting element in different sub-modes, ensuring that the brightness level presented by the first light-emitting element in different sub-modes remains stable, achieving the preset display grayscale.

[0136] Based on the above embodiments, in the first sub-mode, the temperature sensed by the display panel is a first temperature; in the second sub-mode, the temperature sensed by the display panel is a second temperature; the first temperature and the second temperature are different.

[0137] Here, "first temperature" can refer to a specific temperature value or a temperature range, such as "first temperature range." "First sub-mode" can be the display mode when the temperature detected by the temperature sensor in the display panel is at the first temperature. Similarly, "second temperature" can refer to a specific temperature value or a temperature range, such as "second temperature range." "Second sub-mode" can be the display mode when the temperature detected by the temperature sensor in the display panel is at the second temperature. Taking "first temperature" as referring to "first temperature range" and "second temperature" as referring to "second temperature range" as an example, the temperatures within the first and second temperature ranges do not overlap. For instance, the first temperature range could be greater than or equal to 40°C and less than 50°C, and the second temperature range could be greater than or equal to 30°C and less than 40°C. When the first light-emitting element is in different temperature ranges, the luminous efficiency of the first light-emitting element is different. The second data signal can be adjusted according to different temperature ranges, thereby controlling the magnitude of the driving current provided by the first driving circuit to the first light-emitting element in the second light-emitting stage, thereby compensating for the luminous efficiency of the first light-emitting element and avoiding large changes in the brightness of the first light-emitting element due to temperature changes. That is, it avoids large deviations in the display grayscale of the first light-emitting element due to temperature changes, which would cause color shift problems.

[0138] In an optional embodiment, the first temperature is higher than the second temperature; for a preset display grayscale, in the first sub-mode, the driving current generated by the first driving circuit according to the second data signal is the first driving current, and in the second sub-mode, the driving current generated by the first driving circuit according to the second data signal is the second driving current, and the second driving current is less than the first driving current.

[0139] Specifically, when the driving transistor of the driving circuit is a P-channel transistor, the driving current is negatively correlated with the data signal. For the same display screen, the second data signal written to the first driving circuit in the second sub-mode is greater than the second data signal written to the first driving circuit in the first sub-mode. When the driving transistor is an N-channel transistor, the driving current is positively correlated with the data signal. For the same display screen, the second data signal written to the first driving circuit in the second sub-mode is less than the second data signal written to the first driving circuit in the first sub-mode.

[0140] Specifically, as the temperature of the display panel increases, the luminous efficiency of the first light-emitting element gradually decreases. Therefore, the luminous efficiency of the first light-emitting element in the first sub-mode is lower than that in the second sub-mode. By setting the first driving current to be greater than the second driving current, when the display mode of the display panel changes from the second sub-mode to the first sub-mode, the luminous brightness of the first light-emitting element in the first sub-mode during the second emission stage can be increased, and when the display mode of the display panel changes from the first mode to the second sub-mode, the luminous brightness of the first light-emitting element in the first sub-mode during the second emission stage can be decreased. This compensates for the change in luminous brightness caused by the change in the luminous efficiency of the first light-emitting element, so that when the displayed image on the display panel remains unchanged, the grayscale of the first light-emitting element in the first sub-mode is consistent with that in the second sub-mode, balancing the color shift problem caused by the change in the luminous efficiency of the first light-emitting element and improving the display effect.

[0141] Based on the above embodiments, the first mode further includes a third sub-mode. In the third sub-mode, the sensing temperature of the display panel is a third temperature, which is lower than the second temperature, and the difference between the first temperature and the second temperature is equal to the difference between the second temperature and the third temperature. For the preset display grayscale, in the third sub-mode, the driving current generated by the first driving circuit according to the second data signal is the third driving current, which is less than the second driving current. The difference between the first driving current and the second driving current is greater than the difference between the second driving current and the third driving current.

[0142] The third temperature can refer to a specific temperature value or a temperature range, such as a third temperature range. The third sub-mode can be the display mode when the temperature sensor on the display panel detects a certain third temperature. For example, the first temperature can refer to a temperature range greater than or equal to 40℃ and less than 50℃, the second temperature can refer to a temperature range greater than or equal to 30℃ and less than 40℃, and the third temperature can refer to a temperature range greater than or equal to 25℃ and less than 30℃. The first, second, and third temperatures are three consecutively adjacent temperature ranges, and the upper limit temperature difference and / or lower limit temperature difference between any two adjacent temperature ranges are the same.

[0143] It is understandable that as the temperature of the display panel increases, the luminous efficiency of the first light-emitting element decreases accordingly. Moreover, at higher temperatures, the luminous efficiency of the first light-emitting element will drop sharply. Therefore, when the sensing temperature of the display panel increases from the third temperature of the third sub-mode to the second temperature of the second sub-mode, the decrease in the luminous efficiency of the first light-emitting element is less than the decrease in the luminous efficiency of the first light-emitting element when the temperature of the display panel increases from the second temperature of the second sub-mode to the first temperature of the first sub-mode.

[0144] Specifically, the luminous efficiency of the first light-emitting element varies in different sub-modes. The luminous efficiency of the first light-emitting element in the third sub-mode is greater than that in the second sub-mode, and the luminous efficiency of the first light-emitting element in the second sub-mode is greater than that in the first sub-mode. The third driving current is less than the second driving current, and the second driving current is less than the first driving current. This can compensate for the difference in brightness caused by the different luminous efficiency of the first light-emitting element in different sub-modes, so that the first light-emitting element can have the same display illumination in different sub-modes. The difference between the second and third driving currents can compensate for the change in the luminous efficiency of the first light-emitting element when the display panel switches between the third and second sub-modes. The difference between the first and second driving currents is greater than the difference between the second and third driving currents, so that the amount of compensation for the display brightness of the first light-emitting element when the display panel switches between the second and first sub-modes is greater than the amount of compensation for the display brightness of the first light-emitting element when the display panel switches between the third and second sub-modes. This adapts to the change in the decay rate of the luminous efficiency of the first light-emitting element under different temperature ranges, balances the color shift problem caused by the change in the luminous efficiency of the first light-emitting element, and improves the display effect.

[0145] Optionally, referring to Figures 1-3 and Figure 20, within the first time period t1, the driving process of the first driving circuit DC1 includes a light-emitting stage te1; within the second time period t2, the driving process of the first driving circuit DC1 includes a light-emitting stage te2; the duration of the first light-emitting stage te1 is the same as the duration of the second light-emitting stage te2. With this configuration, when the luminous efficiency of the first light-emitting element D1 differs in different sub-modes of the first mode DP1, the brightness variation caused by the luminous efficiency of the first light-emitting element D1 can be compensated simply by adjusting the first data signal and / or the second data signal. This ensures a corresponding mapping relationship between the compensation amount of the data signal and the sub-mode, without needing to change the light-emitting duration of the second light-emitting stage te2 in different sub-modes. This allows for the control of the luminous brightness of the first light-emitting element D1 in different sub-modes, simplifying the control logic of the display panel 100.

[0146] Optionally, Figure 21 is a timing diagram of another pixel unit in the first mode provided by the embodiment of the present invention. Referring to Figures 1-3 and Figure 21, in the first time period t1, the light emission stage te included in the driving process of the first driving circuit DC1 is the first light emission stage te1; in the second time period t2, the light emission stage te included in the driving process of the first driving circuit DC1 is the second light emission stage te2; the first mode DP1 includes a first sub-mode DP11 and a second sub-mode DP12, and the duration of the second light emission stage te2 under the first sub-mode DP11 is different from the duration of the second light emission stage te2 under the second sub-mode DP12.

[0147] This configuration, by adjusting the duration of the second emission stage te2 of the first light-emitting element in different sub-modes, compensates for the change in luminous brightness caused by the change in luminous efficiency of the first light-emitting element D1. Thus, when the displayed image remains unchanged, the integral value of the brightness and emission time of the first light-emitting element D1 within the display time F0 of a frame in different sub-modes remains consistent. This ensures that the perceived brightness of the first light-emitting element D1 perceived by the human visual system remains consistent, thereby improving or balancing the color shift problem caused by the change in luminous efficiency of the first light-emitting element D1.

[0148] In the first sub-mode, the sensed temperature of the display panel is a first temperature, and in the second sub-mode, the sensed temperature of the display panel is a second temperature, and the first temperature and the second temperature are different. Furthermore, the first temperature is higher than the second temperature, and the duration of the second light-emitting stage te2 under the first sub-mode DP11 is greater than the duration of the second light-emitting stage te2 under the second sub-mode DP12.

[0149] Specifically, as the temperature of the display panel increases, the luminous efficiency of the first light-emitting element D1 gradually decreases. Therefore, the luminous efficiency of the first light-emitting element D1 under the first sub-mode DP11 is less than that under the second sub-mode DP12. This can be compensated for by increasing the luminous efficiency of the first light-emitting element D1 within the display time F0 of one frame when the display mode of the display panel 100 changes from the second sub-mode DP12 to the first sub-mode DP11. The integral values ​​of brightness and emission time can remain unchanged. When the display mode of the display panel 100 changes from the first mode DP11 to the second sub-mode DP12, the emission time of the first light-emitting element D1 within the display time F0 of one frame can be reduced to compensate for the increase in the brightness of the first light-emitting element D1. This ensures that the integral values ​​of brightness and emission time of the first light-emitting element D1 within the display time F0 of one frame remain unchanged. This allows the perceived brightness of the first light-emitting element D1 perceived by the human visual system under the first sub-mode DP11 to be equal to the perceived brightness of the first light-emitting element D1 perceived by the human visual system under the second sub-mode DP12. This balances the color shift problem caused by the change in the luminous efficiency of the first light-emitting element D1 and improves the display effect.

[0150] Based on the above embodiments, referring to Figure 21, when the first temperature is higher than the second temperature, the duration of the first light-emitting stage te1 under the first sub-mode DP11 can be equal to the duration of the first light-emitting stage te1 under the second sub-mode DP12. Thus, in the first mode, when the display panel switches sub-modes, it is not necessary to change the duration of the first light-emitting stage te1 within one frame of display; only the duration of the second light-emitting stage te2 within one frame of display needs to be adjusted, thereby simplifying the control logic of the display panel.

[0151] Based on the above embodiments, FIG22 is a timing diagram of a pixel unit in the first mode provided by the embodiments of the present invention. Referring to FIG1-FIG3 and FIG22, when the first mode DP1 further includes a third sub-mode DP13, and the sensing temperature of the display panel 100 under the third sub-mode DP13 is a third temperature, the third temperature is lower than the second temperature, and the difference between the first temperature and the second temperature is equal to the difference between the second temperature and the third temperature, the difference between the duration of the second light-emitting stage te2 under the first sub-mode DP11 and the duration of the second light-emitting stage te2 under the second sub-mode DP12 is a first difference Δt01, and the difference between the duration of the second light-emitting stage te2 under the second sub-mode DP12 and the duration of the second light-emitting stage te2 under the third sub-mode DP13 is a second difference Δt02; the first difference Δt01 is greater than the second difference Δt02.

[0152] It is understandable that as the temperature of the display panel 100 increases, the luminous efficiency of the first light-emitting element D1 decreases accordingly. Moreover, at higher temperatures, the luminous efficiency of the first light-emitting element D1 will drop sharply. Therefore, when the temperature of the display panel 100 increases from the third temperature of the third sub-mode DP13 to the second temperature of the second sub-mode DP12, the decrease in the luminous efficiency of the first light-emitting element D1 is less than the decrease in the luminous efficiency of the first light-emitting element D1 when the temperature of the display panel 100 increases from the second temperature of the second sub-mode DP12 to the first temperature of the first sub-mode DP11.

[0153] Specifically, the luminous efficiency of the first light-emitting element D1 varies in different sub-modes. The luminous efficiency of the first light-emitting element D1 in the third sub-mode DP13 is greater than that in the second sub-mode DP12. The luminous efficiency of the first light-emitting element D1 in the second sub-mode DP12 is greater than that in the first sub-mode DP11. The duration of the second light-emitting stage te2 in the third sub-mode DP13 is shorter than that in the second sub-mode DP12. The duration of the second light-emitting stage te2 in the second sub-mode DP12 is shorter than that in the first sub-mode DP11. This can compensate for the changes in luminous brightness caused by the changes in the luminous efficiency of the first light-emitting element D1 in different sub-modes, so that the perceived brightness of the first light-emitting element D1 remains consistent when the human visual system views the same display screen in different sub-modes. The second difference Δt02 can compensate for the change in luminous efficiency of the first light-emitting element D1 when the display panel 100 switches between the third sub-mode DP13 and the second sub-mode DP12. The first difference Δt01 can compensate for the change in luminous efficiency of the first light-emitting element D1 when the display panel 100 switches between the second sub-mode DP12 and the first sub-mode DP11. The first difference Δt01 is greater than the second difference Δt02, so that the change in the duration of the second light-emitting stage te2 when changing from the second sub-mode DP12 to the first sub-mode DP11 can compensate for the attenuation of the luminous efficiency of the first light-emitting element D1 more than the change in the duration of the second light-emitting stage te2 when changing from the third sub-mode DP13 to the second sub-mode DP12. This adapts to the change in the attenuation rate of the luminous efficiency of the first light-emitting element D1 under different temperature ranges, balances the color shift problem caused by the change in the luminous efficiency of the first light-emitting element D1, and improves the display effect.

[0154] In other embodiments, the duration of the second light-emitting stage te under the first sub-mode DP11 can also be the same as the duration of the second light-emitting stage te2 under the second sub-mode DP12, as shown in Figure 23. In this case, the duration of the second light-emitting stage te2 under the third sub-mode DP13 is also the same as the duration of the second light-emitting stage te2 under the second sub-mode DP12. Under the first mode DP, when different sub-modes change with each other, the luminous efficiency of the first light-emitting element D1 also changes. The change in the luminous efficiency of the first light-emitting element D1 can be compensated by adjusting the first data signal and / or the second data signal to balance the color shift problem caused by the change in the luminous efficiency of the first light-emitting element D1. The specific compensation method can be referred to the embodiments of the first data signal and the second data signal described above, and will not be repeated here.

[0155] Optionally, Figure 24 is a top view of another pixel unit provided in an embodiment of the present invention, and Figure 25 is a timing diagram of another pixel unit in a first mode provided in an embodiment of the present invention. Referring to Figures 24 and 25, the plurality of sub-pixels 11 of the pixel unit 10 include a first sub-pixel 111, a second sub-pixel 112, and a compensation sub-pixel 110; the light-emitting elements LED of the first sub-pixel 111 and the compensation sub-pixel 110 are both first light-emitting elements D1, and the light-emitting element LED of the second sub-pixel 112 is a second light-emitting element D2; the driving circuit DC of the first sub-pixel 111 is a first driving circuit DC1, the driving circuit DC of the second sub-pixel 112 is a second driving circuit DC2, and the driving circuit DC of the compensation sub-pixel 110 is a compensation driving circuit DC0; in the first mode DP1, the driving process of the first driving circuit DC1, the second driving circuit DC2, and the compensation driving circuit DC0 all include a light-emitting stage te.

[0156] In an optional embodiment, continuing to refer to FIG24, the plurality of sub-pixels 11 of pixel unit 10 further includes a third sub-pixel 113. The driving circuit DC of the third sub-pixel 113 is a third driving circuit DC3, and the light-emitting element LED of the third sub-pixel 113 is a third light-emitting element D3. The first light-emitting element D1, the second light-emitting element D2, and the third light-emitting element D3 emit different colors. The luminous efficiency of the third light-emitting element D3 is similar to that of the second light-emitting element D2. The arrangement of the third sub-pixel 113 can be the same as that of the second sub-pixel 112, but the data signals Data received by the two can be different. For ease of description, the third sub-pixel 113 will not be described further in the following embodiments.

[0157] It should be noted that the figure only shows the arrangement of each sub-pixel in the pixel unit as an example. In other embodiments, each sub-pixel may also have other arrangements. The embodiments of the present invention do not limit the arrangement of each sub-pixel in the pixel unit.

[0158] Specifically, the perceived brightness of the first light-emitting element D1 by the human visual system is the sum of the integral value of the light-emitting brightness of the first light-emitting element D11 in the first sub-pixel 111 and its light-emitting time, and the integral value of the light-emitting brightness of the first light-emitting element D12 in the compensation sub-pixel 110 and its light-emitting time. The perceived brightness of the second light-emitting element D2 by the human visual system is the integral value of the light-emitting brightness of the first light-emitting element D1 in the second sub-pixel 112 and its light-emitting time. Within the display time F0 of one frame, the sum of the duration of the light-emitting phase te of the first driving circuit DC1 and the duration of the light-emitting phase te of the compensation driving circuit DC0 is greater than the duration of the light-emitting phase te of the second driving circuit DC2. By increasing the number of sub-pixels 11 and the number of first light-emitting elements D1, the total integral value of the light-emitting brightness and light-emitting time of the first light-emitting element D1 can be increased, thereby improving the perceived brightness of the first light-emitting element D1 as perceived by the human visual system. This compensates for the problem of the low light-emitting efficiency of the first light-emitting element D1, which leads to a small light-emitting brightness, and improves or balances the color shift problem caused by the difference in light-emitting efficiency between the first light-emitting element D1 and the second light-emitting element D2.

[0159] It should be noted that the embodiments of the present invention do not limit the number of the first sub-pixel 111, the second sub-pixel 112, and the compensation sub-pixel 110, nor do they limit the relationship between the duration of the light-emitting phase te of the first driving circuit DC1 and the duration of the light-emitting phase te of the second driving circuit DC2 within the display time F0 of a frame, nor the relationship between the duration of the light-emitting phase te of the compensation driving circuit DC0 and the duration of the light-emitting phase te of the second driving circuit DC2. As long as the sum of the durations of the light-emitting phases te of all the first driving circuit DC1 and the sum of the durations of the light-emitting phases te of all the compensation driving circuit DC0 in the same pixel unit 10 within the display time F0 of a frame is greater than the sum of the durations of the light-emitting phases te of all the second driving circuit DC2, the present invention shall be satisfied.

[0160] It should also be noted that Figure 25 only shows, by way of example, the overlapping of the light emission stage te of the first driving circuit DC1 and the light emission stage te of the compensation driving circuit DC0 within the display time F0 of one frame. In other embodiments, the light emission stage te of the first driving circuit DC1 may not overlap with the light emission stage te of the compensation driving circuit DC0, as shown in Figure 26.

[0161] In an optional embodiment, continuing to refer to FIG25, in the first mode DP1, the first driving circuit DC1 includes a third data writing stage td3, in which the first driving circuit DC1 receives a fifth data signal; in the first mode DP1, the compensation driving circuit DC0 includes a fourth data writing stage td4, in which the compensation driving circuit DC0 receives a sixth data signal; within the same frame time F0 of the display panel, the fifth data signal is equal to the sixth data signal.

[0162] Specifically, in the first mode, within the display time F0 of one frame, the luminance of the first light-emitting element D1 of the first sub-pixel 111 during the light-emitting phase te is the same as that of the first light-emitting element D1 of the compensation sub-pixel 110 during the light-emitting phase te. In the first mode DP1, when the luminous efficiency of the first light-emitting element D1 changes, the fifth data signal and the sixth data signal can be adjusted simultaneously, or the duration of the light-emitting phase te of the first driving circuit DC1 and / or the duration of the light-emitting phase te of the compensation driving circuit DC0 can be adjusted to compensate for the brightness change caused by the change in the luminous efficiency of the first light-emitting element D1. This ensures that in the first mode DP1, within the display time F0 of one frame, the integral value of the luminous brightness and the light-emitting time of the first light-emitting element D1 remains unchanged, thus avoiding color shift problems caused by the difference in luminous efficiency between the first light-emitting element D1 and the second light-emitting element D2.

[0163] In another alternative embodiment, continuing to refer to FIG25, in the first mode DP1, the duration of the light-emitting phase te of the first driving circuit DC1 is equal to the duration of the light-emitting phase te of the compensation driving circuit DC0.

[0164] For example, in the first mode DP1, when the luminous efficiency of the first light-emitting element D1 changes, the duration of the light-emitting phase te of the first driving circuit DC1 and the duration of the light-emitting phase te of the compensation driving circuit DC0 can be adjusted simultaneously. Alternatively, the fifth data signal and / or the sixth data signal can be adjusted to compensate for the change in the luminous efficiency of the first light-emitting element D1 and balance the color shift problem caused by the change in the luminous efficiency of the first light-emitting element D1. At this time, the fifth data signal may not be equal to the sixth data signal. Meanwhile, within the display time F0 of one frame of the display panel 100, the sum of the duration of the light-emitting phase te of the first driving circuit DC1 and the duration of the light-emitting phase te of the compensation driving circuit DC0 is greater than the duration of the light-emitting phase te of the second driving circuit DC2, which can improve or balance the color shift problem caused by the difference in luminous efficiency between the first light-emitting element D1 and the second light-emitting element D2.

[0165] In another optional embodiment, FIG27 is a top view of another display panel provided by the present invention. Referring to FIG27, the display panel 100 further includes multiple light emission control signal lines EL; the light emission control signal lines EL are electrically connected to the driving circuit DC, and the light emission control signal Emit provided by the light emission control signal lines EL controls the sub-pixel 11 to enter the light emission stage te; the light emission control signal lines EL include a first light emission control signal line EL1 and a second light emission control signal line EL2; the first light emission control signal line EL1 is electrically connected to the first driving circuit DC1 and the compensation driving circuit DC0, and the second light emission control signal line EL2 is electrically connected to the second driving circuit DC2.

[0166] Specifically, the duration of the light emission stage te of the first driving circuit DC1 and the compensation driving circuit DC0 can be controlled by the first light emission control line EL1 and the light emission control signal Emit it provides, thereby controlling the light emission time of the first light emission element D1 of the first sub-pixel 111 and the light emission time of the first light emission element D1 of the compensation sub-pixel 110 within the display time F0 of one frame, and the light emission time of the first light emission element D1 of the first sub-pixel 111 is equal to the light emission time of the first light emission element D1 of the compensation sub-pixel 110.

[0167] For example, when the luminous efficiency of the first light-emitting element D1 changes, the luminous control signal Emit transmitted on the first luminous control signal line EL1 can be adjusted simultaneously to change the duration of the luminous phase te of the first driving circuit DC1 and the duration of the luminous phase te of the compensation driving circuit DC0 within the display time F0 of one frame, thereby adjusting the luminous time of the first light-emitting element D1 in the first sub-pixel 111 and the luminous time of the first light-emitting element D1 in the compensation sub-pixel 110. Alternatively, the fifth data signal and / or the sixth data signal can be adjusted to compensate for the change in the luminous efficiency of the first light-emitting element D1, balance the perceived brightness of the first light-emitting element D1 and the perceived brightness of the second light-emitting element D2 as perceived by the human visual system, and improve the display effect.

[0168] In another alternative embodiment, referring to Figures 24 and 25, in the first mode DP1, the compensation drive circuit DC0 includes a fourth data writing stage td4, in which the compensation drive circuit DC0 receives a sixth data signal; the first mode DP1 includes a first sub-mode and a second sub-mode; for a preset display grayscale, the sixth data signal in the first sub-mode is different from the sixth data signal in the second sub-mode.

[0169] The first and second sub-modes can be display modes when the display panel has different temperatures, display modes when the display panel has different refresh rates, or display modes when the display panel has different brightness levels. The preset display grayscale refers to a specific brightness level that the LED light-emitting element needs to present within the actual display time F0 of one frame, or it can be a specific brightness level that the LED light-emitting element needs to present during testing.

[0170] For example, when the display mode of the display panel 100 is switched from the first sub-mode to the second sub-mode, the luminous efficiency of the first light-emitting element D1 is correspondingly increased. By adjusting the sixth data signal, the driving current provided by the compensation driving circuit DC0 to the first light-emitting element D12 in the compensation sub-pixel 110 in the second sub-mode is less than the driving current provided to the first light-emitting element D12 in the first sub-mode. This makes the luminous brightness of the first light-emitting element D12 in the compensation sub-pixel 110 in the second sub-mode consistent with the luminous brightness of the first light-emitting element D12 in the compensation sub-pixel 110 in the first sub-mode, so as to compensate for the luminous brightness of the first light-emitting element D11 in the first sub-pixel 111 in different sub-modes. This ensures that the brightness level presented by the first light-emitting element D1 in the same pixel unit 10 can remain consistent within the display time F0 of a frame in different second sub-modes, and can all reach the preset display grayscale.

[0171] In one embodiment, for a preset display grayscale, the fifth data signal in the first sub-mode is the same as the fifth data signal in the second sub-mode.

[0172] For example, when the display mode of the display panel 100 is switched from the first sub-mode to the second sub-mode, or from the second sub-mode to the first sub-mode, the luminous efficiency of the first light-emitting element changes. Only the sixth data signal can be adjusted to compensate for the brightness change caused by the change in the luminous efficiency of the first light-emitting element, so that the brightness level presented by the first light-emitting element D1 is the same within the display time F0 of a frame in different sub-modes, and the preset display grayscale is achieved. The fifth data signal may be related only to the image data received by the display panel 100, and the sixth data signal may be related to the display mode. In different sub-modes, when the luminous efficiency of the first light-emitting element D1 changes, the brightness of the first light-emitting element D11 of the first sub-pixel 111 will change with the change in luminous efficiency, causing the brightness level presented by the first light-emitting element D1 to change within the display time F0 of one frame. By adjusting the sixth data signal, the luminous brightness of the first light-emitting element D12 of the compensation sub-pixel 110 can change in the opposite direction with the change in luminous efficiency, thus compensating for the change in the luminous brightness of the first light-emitting element D11 of the first sub-pixel 111, thereby compensating for the change in the luminous efficiency of the first light-emitting element D1 in different sub-modes, so that the brightness level presented by the first light-emitting element D1 in different sub-modes remains stable within the display time F0 of one frame, achieving the preset display grayscale.

[0173] It is understandable that the sixth data signal may be related to the display mode in order to compensate for the change in the luminous efficiency of the first light-emitting element D1 under different display modes. If the luminous efficiency of the first light-emitting element D1 does not decrease or decreases very little under a certain display mode, the first light-emitting element D1 in the compensation sub-pixel 110 can be controlled not to emit light by adjusting the sixth data signal.

[0174] Based on the above embodiments, in the first sub-mode, the sensed temperature of the display panel is the first temperature; in the second sub-mode, the sensed temperature of the display panel is the second temperature; the first temperature is higher than the second temperature; for the preset display grayscale, in the first sub-mode, the driving current generated by the compensation driving circuit DC0 according to the sixth data signal is the fifth driving current, and in the second sub-mode, the driving current generated by the compensation driving circuit DC0 according to the sixth data signal is the sixth driving current, and the sixth driving current is less than the fifth driving current.

[0175] When the driving transistor M1 is a P-channel transistor, the driving current is negatively correlated with the data signal Data, and the sixth data signal written to the compensation driving circuit DC0 in the second sub-mode is greater than the fifth data signal written to the compensation driving circuit DC0 in the first sub-mode; when the driving transistor M1 is an N-channel transistor, the driving current is positively correlated with the data signal Data, and the sixth data signal written to the compensation driving circuit DC0 in the second sub-mode is less than the fifth data signal written to the compensation driving circuit DC0 in the first sub-mode.

[0176] Specifically, as the temperature of the display panel increases, the luminous efficiency of the first light-emitting element D1 gradually decreases. Therefore, the luminous efficiency of the first light-emitting element D1 in the first sub-mode is less than that in the second sub-mode. By setting the sixth driving current to be less than the fifth driving current, when the display mode of the display panel 100 changes from the second sub-mode to the first sub-mode, the luminous brightness of the first light-emitting element D1 in the compensation sub-pixel 110 in the first sub-mode can be increased to compensate for the luminous efficiency decay of the first light-emitting element D1. When the display mode of the display panel 100 changes from the first mode to the second sub-mode, the luminous brightness of the first light-emitting element D1 in the second sub-mode can be reduced to compensate for the enhanced luminous efficiency of the first light-emitting element D1, balance the color shift problem caused by the change in the luminous efficiency of the first light-emitting element D1, and improve the display effect.

[0177] In an optional implementation, when the first mode further includes a third sub-mode, in which the sensed temperature of the display panel is a third temperature, the third temperature is lower than the second temperature, and the difference between the first temperature and the second temperature is equal to the difference between the second temperature and the third temperature, for the preset display grayscale, in the third sub-mode, the driving current generated by the compensation driving circuit DC0 according to the sixth data signal is the seventh driving current, the seventh driving current is less than the sixth driving current; the difference between the fifth driving current and the sixth driving current is greater than the difference between the sixth driving current and the seventh driving current.

[0178] Specifically, when the sensing temperature of the display panel increases from the third temperature of the third sub-mode to the second temperature of the second sub-mode, the decrease in the luminous efficiency of the first light-emitting element is less than the decrease in the luminous efficiency of the first light-emitting element when the temperature of the display panel increases from the second temperature of the second sub-mode to the first temperature of the first sub-mode. The difference between the sixth and seventh driving currents can compensate for the change in luminous efficiency of the first light-emitting element when the display panel switches between the third and second sub-modes. The difference between the fifth and sixth driving currents can compensate for the change in luminous efficiency of the first light-emitting element when the display panel switches between the second and first sub-modes. The difference between the fifth and sixth driving currents is greater than the difference between the sixth and seventh driving currents, so that the change in luminous efficiency of the first light-emitting element compensated when the driving current of the first light-emitting element changes from the sixth driving current to the first driving current, or from the fifth driving current to the sixth driving current, can be greater than the change in luminous efficiency of the first light-emitting element compensated when the driving current of the first light-emitting element changes from the seventh driving current to the sixth driving current, or from the sixth driving current to the seventh driving current. This adapts to the change in the decay rate of the luminous efficiency of the first light-emitting element under different temperature ranges, balances the color shift problem caused by the change in the luminous efficiency of the first light-emitting element, and improves the display effect.

[0179] Optionally, Figure 28 is a timing diagram of another pixel unit in the first mode provided by the embodiment of the present invention. Referring to Figures 1-3 and Figure 28, the duration of the light-emitting phase te of the compensation driving circuit DC0 in the first sub-mode DP11 is the same as the duration of the light-emitting phase te of the compensation driving circuit DC0 in the second sub-mode DP12. With this setting, it is not necessary to change the duration of the light-emitting phase te when switching sub-modes, which helps to simplify the driving logic of the display panel 100.

[0180] In another optional embodiment, FIG29 is a timing diagram of another pixel unit in the first mode provided by the embodiment of the present invention. Referring to FIG29, the first mode DP1 includes a first sub-mode DP11 and a second sub-mode DP12; the sensing temperature of the display panel in the first sub-mode DP11 is a first temperature; the sensing temperature of the display panel in the second sub-mode DP12 is a second temperature; the first temperature is higher than the second temperature; the duration of the light emission stage te of the compensation driving circuit DC0 in the first sub-mode DP11 is greater than the duration of the light emission stage te of the compensation driving circuit DC0 in the second sub-mode DP112.

[0181] Specifically, as the temperature of the display panel increases, the luminous efficiency of the first light-emitting element D1 gradually decreases. Therefore, the luminous efficiency of the first light-emitting element D1 under the first sub-mode DP11 is less than that under the second sub-mode DP12. This can be achieved by setting the duration of the light-emitting phase te of the compensation drive circuit DC0 under the first sub-mode DP11 to be greater than that under the second sub-mode DP12. This allows the light-emitting time of the first light-emitting element D12 in the compensation sub-pixel 110 to be increased within the display time F0 of one frame when the display mode of the display panel 100 changes from the second sub-mode DP12 to the first sub-mode DP11. This compensates for the decrease in the luminous brightness of the first light-emitting element D11 in the first sub-pixel 111, ensuring that when displaying the same image, all the first light-emitting elements in the same pixel unit 10 have the same luminous efficiency. The total integral value of the brightness and light emission time of element D1 remains consistent. When the display mode of the display panel 100 changes from the first mode DP11 to the second sub-mode DP12, the light emission time of the first light-emitting element D12 in the sub-pixel 110 can be reduced within the display time F0 of one frame to compensate for the increase in the light emission brightness of the first light-emitting element D11 in the first sub-pixel 111. This ensures that when displaying the same image, the total integral value of the brightness and light emission time of all first light-emitting elements D1 in the same pixel unit 10 remains consistent. This ensures that the light emission brightness of the first light-emitting element D1 perceived by the human visual system under the first sub-mode DP11 is equal to the light emission brightness of the first light-emitting element D1 perceived by the human visual system under the second sub-mode DP12, thus balancing the color shift problem caused by the change in the luminous efficiency of the first light-emitting element D1 and improving the display effect.

[0182] In an alternative implementation, continuing to refer to FIG29, the first temperature is higher than the second temperature; the duration of the light-emitting phase te of the first driving circuit DC1 under the first sub-mode DP11 is equal to the duration of the light-emitting phase te of the first driving circuit DC1 under the second sub-mode DP112.

[0183] For example, when the display mode of the display panel 100 is switched from the first sub-mode DP11 to the second sub-mode DP12, or from the second sub-mode DP12 to the first sub-mode DP11, the luminous efficiency of the first light-emitting element D1 changes. The duration of the light-emitting stage te of the compensation drive circuit DC0 can be adjusted to compensate for the change in the luminous brightness of the first light-emitting element D1, so that the brightness level presented by the first light-emitting element D1 is the same within the display time F0 of a frame in different sub-modes, thus achieving the preset display grayscale. The duration of the light-emitting phase te of the first driving circuit DC1 can be related only to the image data received by the display panel 100. The duration of the light-emitting phase te of the compensation driving circuit DC0 can be related to the display mode. In different sub-modes, when the luminous efficiency of the first light-emitting element changes, the luminous brightness of the first light-emitting element D1 will change with the change in luminous efficiency, causing the brightness level presented by the first light-emitting element D1 to change within the display time F0 of one frame. By adjusting the duration of the light-emitting phase te of the compensation driving circuit DC0, the light-emitting time of the first light-emitting element D1 can change in the opposite direction with the change in luminous efficiency within the display time F0 of one frame, so as to compensate for the change in the luminous brightness of the first light-emitting element D1, thereby compensating for the change in the luminous efficiency of the first light-emitting element D1 in different sub-modes, so that the brightness level presented by the first light-emitting element D1 within the display time F0 of one frame in different sub-modes can remain stable and reach the preset display grayscale.

[0184] In another optional implementation, FIG30 is a timing diagram of another pixel unit in the first mode provided by the embodiment of the present invention. Referring to FIG30, when the first mode DP1 further includes a third sub-mode DP13, and the sensed temperature of the display panel 100 in the third sub-mode DP13 is a third temperature, the third temperature is lower than the second temperature, and the difference between the first temperature and the second temperature is equal to the difference between the second temperature and the third temperature, for the preset display grayscale, the duration of the light emission stage te of the compensation driving circuit DC0 in the third sub-mode DP13 is less than that in the second sub-mode DP13. The duration of the light-emitting phase te of the compensation drive circuit DC0 under sub-mode 12; the difference between the duration of the light-emitting phase te of the compensation drive circuit DC0 under sub-mode DP11 and the duration of the light-emitting phase te of the compensation drive circuit DC0 under sub-mode DP12 is the third difference Δt03, and the difference between the duration of the light-emitting phase te of the compensation drive circuit DC0 under sub-mode DP11 and the duration of the light-emitting phase te of the compensation drive circuit DC0 under sub-mode DP13 is the fourth difference Δt04; the third difference Δt03 is greater than the fourth difference Δt04.

[0185] Specifically, the luminous efficiency of the first light-emitting element D1 in the third sub-mode DP13 is greater than that in the second sub-mode DP12, and the luminous efficiency of the first light-emitting element D1 in the second sub-mode DP12 is greater than that in the first sub-mode DP11. The duration of the light-emitting phase te of the compensation drive circuit DC0 in the third sub-mode DP13 is shorter than that in the second sub-mode DP12, and the duration of the light-emitting phase te of the compensation drive circuit DC0 in the second sub-mode DP12 is shorter than that in the first sub-mode DP11. This can compensate for the changes in luminous brightness caused by the changes in the luminous efficiency of the first light-emitting element D1 in different sub-modes, so that the perceived brightness of the first light-emitting element D1 by the human visual system can be the same in different sub-modes. The fourth difference Δt04 can compensate for the change in luminous efficiency of the first light-emitting element D1 when the display panel 100 switches between the third sub-mode DP13 and the second sub-mode DP12. The third difference Δt03 can compensate for the change in luminous efficiency of the first light-emitting element D1 when the display panel 100 switches between the second sub-mode DP12 and the first sub-mode DP11. The third difference Δt03 is greater than the fourth difference Δt04, so that the attenuation of the luminous efficiency of the first light-emitting element D1 that can be compensated by the change in the duration of the light-emitting stage te of the compensation driving circuit DC0 when changing from the second sub-mode DP12 to the first sub-mode DP11 is greater than the attenuation of the luminous efficiency of the first light-emitting element D1 that can be compensated by the change in the duration of the light-emitting stage te of the compensation driving circuit DC0 when changing from the third sub-mode DP13 to the second sub-mode DP12. This adapts to the change in the attenuation rate of the luminous efficiency of the first light-emitting element D1 under different temperature ranges, balances the color shift problem caused by the change in the luminous efficiency of the first light-emitting element D1, and improves the display effect.

[0186] Based on the above embodiments, in the first mode DP1, the compensation drive circuit DC0 includes a fourth data writing stage td4. In the fourth data writing stage td4, the compensation drive circuit DC0 receives a sixth data signal. For the preset display grayscale, the sixth data signal in the first sub-mode DP11 is equal to the sixth data signal in the second sub-mode DP12.

[0187] Specifically, as the temperature of the display panel increases, the luminous efficiency of the first light-emitting element D1 gradually decreases. Therefore, the luminous efficiency of the first light-emitting element D1 under the first sub-mode DP11 is less than that under the second sub-mode DP12. When the display mode of the display panel 100 changes from the second sub-mode DP12 to the first sub-mode DP11, the luminous efficiency of the first light-emitting element D1 decreases. Even without adjusting the sixth data signal and its controlled driving current, the light-emitting time of the first light-emitting element D1 in the compensation sub-pixel 110 within the display time F0 of one frame can be increased by adjusting the duration of the light-emitting stage te of the compensation driving circuit DC0, thereby compensating for the decrease in the luminous brightness of the first light-emitting element D1. When the display mode of the display panel 100 changes from the first sub-mode DP11 to the second sub-mode DP12, the luminous efficiency of the first light-emitting element D1 increases. Even without adjusting the sixth data signal and its controlled driving current, the light-emitting time of the first light-emitting element D1 in the compensation sub-pixel 110 within the display time F0 of one frame can be decreased by adjusting the duration of the light-emitting stage te of the compensation driving circuit DC0, thereby compensating for the increase in the luminous brightness of the first light-emitting element D1, balancing the color shift problem caused by the change in the luminous efficiency of the first light-emitting element D1, and improving the display effect.

[0188] Based on the above embodiments, FIG31 is a timing diagram of another pixel unit in the second mode provided by the embodiments of the present invention. Referring to FIG31, the working mode of the display panel 100 also includes the second mode DP2. In the second mode DP2, the driving process of the first driving circuit DC1 and the second driving circuit DC2 both include the light-emitting stage te, while the driving process of the compensation driving circuit DC0 does not include the light-emitting stage te.

[0189] For example, the second mode DP2 can be a display mode where the display panel 100 is in a normal temperature environment, and the first mode DP1 can be a display mode where the display panel 100 is in a high temperature environment. In the second mode DP2, the luminous efficiency of the first light-emitting element D1 is greater than that in the first mode DP1. In the second mode DP2, the difference between the luminous efficiency of the first light-emitting element D1 and the luminous efficiency of the second light-emitting element D2 is less than that in the first mode DP1. In one embodiment, in the second mode DP2, within the display time F0 of one frame, the duration of the light-emitting phase te of the first driving circuit DC1 is equal to the duration of the light-emitting phase te of the second driving circuit DC2. The difference in luminous efficiency between the first light-emitting element D1 and the second light-emitting element D2 can be balanced simply by adjusting the data signal Data received by the first driving circuit DC1.

[0190] It should be noted that in the second mode DP2, the driving process of the compensation driving circuit DC0 does not include the light-emitting stage te, but the driving process of the compensation driving circuit DC0 can still include the data writing stage td. The compensation driving circuit DC0 can receive the same second scan signal S2 as the first driving circuit DC1 located in the same row as the same pixel unit 10, so as to reduce the signal traces of the display panel 100. In other embodiments, in the second mode DP2, the driving process of the compensation driving circuit DC0 may also exclude the data writing stage td, and the embodiments of the present invention do not limit this.

[0191] Based on the same inventive concept, embodiments of the present invention also provide a display device. FIG32 is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. As shown in FIG32, the display device 200 includes a display panel 100 provided in any embodiment of the present invention. The display device 200 provided in the embodiments of the present invention can be a mobile phone as shown in FIG32, or any electronic product with display function, including but not limited to the following categories: television, laptop, desktop monitor, tablet computer, digital camera, smart bracelet, smart glasses, vehicle display, medical equipment, industrial control equipment, touch interactive terminal, etc. The embodiments of the present invention do not make any special limitations in this regard.

[0192] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that, include: Multiple pixel units; Each pixel unit includes multiple sub-pixels; The sub-pixel includes a light-emitting element and a driving circuit; The driving circuit is electrically connected to the light-emitting element; The driving process of the sub-pixel includes at least a light-emitting stage; The driving circuit is used to drive the light-emitting element to emit light during the light-emitting phase; the light-emitting element includes a first light-emitting element and a second light-emitting element; the light-emitting color of the first light-emitting element is different from the light-emitting color of the second light-emitting element; the display mode of the display panel includes a first mode; in the first mode, during the display time of one frame, the sum of the durations of the light-emitting phases of the first light-emitting element is greater than the sum of the durations of the light-emitting phases of the second light-emitting element, or, in the same pixel unit, the sum of the durations of the light-emitting phases of N first light-emitting elements is greater than the sum of the durations of the light-emitting phases of M second light-emitting elements, where N>M≧1; the driving circuit includes a first driving circuit and a second driving circuit; the first driving circuit is electrically connected to the first light-emitting element, and the second driving circuit is electrically connected to the second light-emitting element; In the first mode, the display time of one frame of the display panel includes a first time period and a second time period; within the first time period, the driving process of the first driving circuit includes the light-emitting stage, and the driving process of the second driving circuit includes the light-emitting stage; within the second time period, the driving process of the first driving circuit includes the light-emitting stage, but the driving process of the second driving circuit does not include the light-emitting stage; within the first time period, the driving process of the first driving circuit includes a first data writing stage, in which the first driving circuit receives a first data signal; within the second time period, the driving process of the first driving circuit includes a second data writing stage, in which the first driving circuit receives a second data signal; the second data signal is different from the first data signal.

2. The display panel according to claim 1, characterized in that, The first mode includes a first sub-mode and a second sub-mode. For a preset display grayscale, the second data signal in the first sub-mode is different from the second data signal in the second sub-mode.

3. The display panel according to claim 2, characterized in that, For the preset display grayscale, the first data signal in the first sub-mode and the first data signal in the second sub-mode are the same.

4. The display panel according to claim 2, characterized in that, In the first sub-mode, the sensing temperature of the display panel is a first temperature; in the second sub-mode, the sensing temperature of the display panel is a second temperature; the first temperature and the second temperature are different.

5. The display panel according to claim 4, characterized in that, The first temperature is higher than the second temperature; for the preset display grayscale, in the first sub-mode, the driving current generated by the first driving circuit according to the second data signal is the first driving current, and in the second sub-mode, the driving current generated by the first driving circuit according to the second data signal is the second driving current, and the second driving current is less than the first driving current.

6. The display panel according to claim 5, characterized in that, The first mode also includes a third sub-mode, in which the sensing temperature of the display panel is a third temperature, which is lower than the second temperature, and the difference between the first temperature and the second temperature is equal to the difference between the second temperature and the third temperature; for the preset display grayscale, in the third sub-mode, the driving current generated by the first driving circuit according to the second data signal is a third driving current, which is less than the second driving current. The difference between the first driving current and the second driving current is greater than the difference between the second driving current and the third driving current.

7. The display panel according to claim 1, characterized in that, During the first time period, the light-emitting stage included in the driving process of the first driving circuit is the first light-emitting stage; during the second time period, the light-emitting stage included in the driving process of the first driving circuit is the second light-emitting stage; the duration of the first light-emitting stage is the same as the duration of the second light-emitting stage.

8. The display panel according to claim 1, characterized in that, The duration of the light-emitting phase of the first driving circuit during the second time period is the first duration, and the duration of the light-emitting phase of the second driving circuit during the first time period is the second duration. The first duration is greater than or equal to one-thousandth of the second duration.

9. The display panel according to claim 1, characterized in that, During the first time period, the driving process of the first driving circuit includes a light-emitting stage, which is a first light-emitting stage; during the second time period, the driving process of the first driving circuit includes a light-emitting stage, which is a second light-emitting stage; the first mode includes a first sub-mode and a second sub-mode, and the duration of the second light-emitting stage in the first sub-mode is different from the duration of the second light-emitting stage in the second sub-mode.

10. The display panel according to claim 9, characterized in that, In the first sub-mode, the sensing temperature of the display panel is a first temperature; in the second sub-mode, the sensing temperature of the display panel is a second temperature; the first temperature and the second temperature are different.

11. The display panel according to claim 10, characterized in that, The first temperature is higher than the second temperature, and the duration of the second light emission phase in the first sub-mode is greater than the duration of the second light emission phase in the second sub-mode.

12. The display panel according to claim 11, characterized in that, The first mode further includes a third sub-mode, in which the sensing temperature of the display panel is a third temperature, which is lower than the second temperature, and the difference between the first temperature and the second temperature is equal to the difference between the second temperature and the third temperature; the difference between the duration of the second light-emitting stage in the first sub-mode and the duration of the second light-emitting stage in the second sub-mode is a first difference, and the difference between the duration of the second light-emitting stage in the second sub-mode and the duration of the second light-emitting stage in the third sub-mode is a second difference; The first difference is greater than the second difference.

13. The display panel according to claim 1, characterized in that, During the first time period, the driving process of the first driving circuit includes a light-emitting stage, which is a first light-emitting stage; during the second time period, the driving process of the first driving circuit includes a light-emitting stage, which is a second light-emitting stage; the first mode includes a first sub-mode and a second sub-mode, and the duration of the second light-emitting stage in the first sub-mode is the same as the duration of the second light-emitting stage in the second sub-mode.

14. The display panel according to claim 1, characterized in that, The display panel also includes a second mode, in which the display time of one frame includes the first time period but excludes the second time period.

15. The display panel according to claim 1, characterized in that, The display panel also includes a second mode, in which, during the display time of one frame, the sum of the durations of the light-emitting phases of the first light-emitting elements is less than or equal to the sum of the durations of the light-emitting phases of the second light-emitting elements; or, in the same pixel unit, the sum of the durations of the light-emitting phases of N first light-emitting elements is less than or equal to the sum of the durations of the light-emitting phases of M second light-emitting elements, where N>M≧1.

16. The display panel according to claim 15, characterized in that, In the second mode, the sensing temperature of the display panel is lower than that in the first mode.

17. The display panel according to claim 15, characterized in that, For a preset display grayscale, in the first mode, the second driving circuit receives a third data signal, and in the second mode, the second driving circuit receives a fourth data signal; the third data signal is different from the fourth data signal.

18. The display panel according to claim 1, characterized in that, It also includes multiple light-emitting control signal lines, which are electrically connected to the driving circuit. The light-emitting control signal lines provide light-emitting control signals to control the sub-pixel to enter the light-emitting stage. The light-emitting control signal lines include a first light-emitting control signal line and a second light-emitting control signal line. The first light-emitting control signal line is electrically connected to the first driving circuit, and the second light-emitting control signal line is electrically connected to the second driving circuit.

19. The display panel according to claim 18, characterized in that, In the first mode, the light emission control signal provided by the first light emission control signal line is different from the light emission control signal provided by the second light emission control signal line.

20. The display panel according to claim 18, characterized in that, Also includes: A light-emitting control circuit; the light-emitting control circuit includes multiple cascaded first light-emitting control units and multiple cascaded second light-emitting control units; each first light-emitting control unit is electrically connected to a corresponding first light-emitting control signal line; each first light-emitting control unit provides a light-emitting control signal to each first light-emitting control signal line, and the enable level time of each light-emitting control signal provided by each first light-emitting control unit is sequentially shifted; each second light-emitting control unit is electrically connected to a corresponding second light-emitting control signal line; each second light-emitting control unit provides a light-emitting control signal to each second light-emitting control signal line, and the enable level time of each light-emitting control signal provided by each second light-emitting control unit is sequentially shifted.

21. The display panel according to claim 1, characterized in that, The light-emitting element further includes a third light-emitting element; the first light-emitting element, the second light-emitting element, and the third light-emitting element each emit different colors; in the first mode, during the display time of one frame, the sum of the durations of the light-emitting phases of the first light-emitting element is greater than the sum of the durations of the light-emitting phases of the third light-emitting element, or, in the same pixel unit, the sum of the durations of the light-emitting phases of N first light-emitting elements is greater than the sum of the durations of the light-emitting phases of Q third light-emitting elements; where N>Q≧1.

22. The display panel according to claim 21, characterized in that, Within the display time of one frame, the sum of the durations of the light-emitting phases of the third light-emitting element is equal to the sum of the durations of the light-emitting phases of the second light-emitting element; or, within the same pixel unit, the sum of the durations of the light-emitting phases of the M second light-emitting elements is equal to the sum of the durations of the light-emitting phases of the Q third light-emitting elements.

23. The display panel according to claim 1, characterized in that, The pixel unit comprises a plurality of sub-pixels, including a first sub-pixel, a second sub-pixel, and a compensation sub-pixel; the light-emitting elements of the first sub-pixel and the compensation sub-pixel are both the first light-emitting element, and the light-emitting element of the second sub-pixel is the second light-emitting element; the first sub-pixel includes the first driving circuit, the second sub-pixel includes the second driving circuit, and the compensation sub-pixel includes a compensation driving circuit; in the first mode, the driving process of the compensation driving circuit includes the light-emitting stage.

24. The display panel according to claim 23, characterized in that, In the first mode, the first driving circuit includes a third data writing stage, in which the first driving circuit receives a fifth data signal; in the first mode, the compensation driving circuit includes a fourth data writing stage, in which the compensation driving circuit receives a sixth data signal; and in the same frame time of the display panel, the fifth data signal is equal to the sixth data signal.

25. The display panel according to claim 23, characterized in that, In the first mode, the duration of the light-emitting phase of the first driving circuit is equal to the duration of the light-emitting phase of the compensation driving circuit.

26. The display panel according to claim 23, characterized in that, In the first mode, the compensation driving circuit includes a fourth data writing stage, in which the compensation driving circuit receives a sixth data signal; the first mode includes a first sub-mode and a second sub-mode; for a preset display grayscale, the sixth data signal in the first sub-mode is different from the sixth data signal in the second sub-mode.

27. The display panel according to claim 26, characterized in that, In the first sub-mode, the sensed temperature of the display panel is a first temperature; in the second sub-mode, the sensed temperature of the display panel is a second temperature; the first temperature is higher than the second temperature; for the preset display grayscale, in the first sub-mode, the driving current generated by the compensation driving circuit according to the sixth data signal is a fifth driving current, and in the second sub-mode, the driving current generated by the compensation driving circuit according to the sixth data signal is a sixth driving current, and the sixth driving current is less than the fifth driving current.

28. The display panel according to claim 23, characterized in that, The first mode includes a first sub-mode and a second sub-mode, wherein the duration of the light-emitting phase of the compensation driving circuit in the first sub-mode is the same as the duration of the light-emitting phase of the compensation driving circuit in the second sub-mode.

29. The display panel according to claim 23, characterized in that, The first mode includes a first sub-mode and a second sub-mode; in the first sub-mode, the sensed temperature of the display panel is a first temperature; in the second sub-mode, the sensed temperature of the display panel is a second temperature; the first temperature is higher than the second temperature; in the first sub-mode, the duration of the light-emitting phase of the compensation driving circuit is greater than the duration of the light-emitting phase of the compensation driving circuit in the second sub-mode.

30. The display panel according to claim 29, characterized in that, In the first mode, the compensation driving circuit includes a fourth data writing stage, in which the compensation driving circuit receives a sixth data signal; for a preset display grayscale, the sixth data signal in the first sub-mode is equal to the sixth data signal in the second sub-mode.

31. The display panel according to claim 23, characterized in that, The operating mode of the display panel also includes a second mode; in the second mode, the driving process of both the first driving circuit and the second driving circuit includes the light-emitting stage, while the driving process of the compensation driving circuit does not include the light-emitting stage.

32. The display panel according to claim 23, characterized in that, It also includes multiple light-emitting control signal lines; the light-emitting control signal lines are electrically connected to the driving circuit, and the light-emitting control signals provided by the light-emitting control signal lines control the sub-pixel to enter the light-emitting stage; the light-emitting control signal lines include a first light-emitting control signal line and a second light-emitting control signal line; the first light-emitting control signal line is electrically connected to the first driving circuit and the compensation driving circuit, and the second light-emitting control signal line is electrically connected to the second driving circuit.

33. The display panel according to claim 1, characterized in that, The light-emitting element includes mini-LED or micro-LED; the first light-emitting element emits red light, and the second light-emitting element emits green or blue light.

34. A display panel, characterized in that, include: Multiple pixel units and multiple light-emitting control signal lines; each pixel unit includes multiple sub-pixels; The sub-pixel includes a light-emitting element and a driving circuit; The driving circuit is electrically connected to the light-emitting element; The driving process of the sub-pixel includes at least a light-emitting stage; The driving circuit is used to drive the light-emitting element to emit light during the light-emitting stage; the light-emitting element includes a first light-emitting element and a second light-emitting element; the light-emitting color of the first light-emitting element is different from the light-emitting color of the second light-emitting element; the driving circuit electrically connected to the first light-emitting element is a first driving circuit, and the driving circuit electrically connected to the second light-emitting element is a second driving circuit; the light-emitting control signal line is electrically connected to the driving circuit, and the light-emitting control signal provided by the light-emitting control signal line controls the sub-pixel to enter the light-emitting stage; the light-emitting control signal line includes a first light-emitting control signal line and a second light-emitting control signal line; the first light-emitting control signal line is electrically connected to the first driving circuit, and the second light-emitting control signal line is electrically connected to the second driving circuit; the display mode of the display panel includes a first mode; wherein, in the In the first mode, the display time of one frame of the display panel includes a first time period and a second time period; within the first time period, the driving process of the first driving circuit includes the light-emitting stage, and the driving process of the second driving circuit includes the light-emitting stage; within the second time period, the driving process of the first driving circuit includes the light-emitting stage, but the driving process of the second driving circuit does not include the light-emitting stage; within the first time period, the driving process of the first driving circuit includes a first data writing stage, in which the first driving circuit receives a first data signal; within the second time period, the driving process of the first driving circuit includes a second data writing stage, in which the first driving circuit receives a second data signal; the second data signal is different from the first data signal.

35. The display panel according to claim 34, characterized in that, In the first mode, within the display time of one frame, the duration for which the first driving circuit enters the light-emitting stage is controlled by the light-emitting control signal provided by the first light-emitting control signal line is a third duration, and the duration for which the second driving circuit enters the light-emitting stage is controlled by the light-emitting control signal provided by the second light-emitting control signal line is a fourth duration; wherein, the third duration is longer than the fourth duration.

36. A display device, characterized in that, include: The display panel according to any one of claims 1-35.

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