Display panel and driving method thereof

Abstract

This case discloses a display panel and its driving method. Within a first sub-frame, a second light-emitting signal controls a second group of switches to be on and a first light-emitting signal controls a first group of switches to be off, such that a plurality of light-emitting elements and the second group of switches form a first light-emitting path; and within a second sub-frame, the second light-emitting signal controls the second group of switches to be off and the first light-emitting signal controls the first group of switches to be on, such that the light-emitting elements and the first group of switches form a second light-emitting path. The first group of switches and the second group of switches are respectively controlled by the first light-emitting signal and the second light-emitting signal. The first group of switches and the second group of switches are coupled to the light-emitting elements.

Description

Technical Field

[0001] This invention relates to a display panel and its driving method. Prior Technology

[0002] Micro LED (μLED) is an emerging display technology characterized by the use of miniature light-emitting diodes as display units. This technology has many advantages, but also faces some challenges.

[0003] The advantages of μLED are as follows: (1) High brightness: The brightness of μLED can reach several times that of traditional OLED (organic light-emitting diode) or LCD (liquid crystal display) displays, making it very suitable for use in strong light environments, such as outdoor displays. (2) High contrast: Since the brightness of each pixel can be controlled individually in μLED, it can achieve extremely high contrast and deeper blacks, providing a better display effect. (3) Low power consumption: μLED consumes less energy than LCD and OLED because each LED only emits light when needed, making it particularly important in portable devices. (4) Long lifespan and durability: μLED has high material stability and is not as susceptible to burn-in and lifespan limitations as OLED, resulting in a longer lifespan. (5) Fast response time: μLED has a very fast response speed, making it suitable for applications that require high-speed displays, such as VR and AR headsets. (6) Stability of inorganic materials: The inorganic materials used in μLED, such as gallium nitride (GaN), are not easily degraded over time, which makes μLED have better environmental stability and reliability.

[0004] Currently, common applications of μLED include: (1) Consumer electronics: μLED can be used in consumer electronics such as smartphones, tablets, and televisions, providing higher quality display effects and lower energy consumption. (2) Wearable devices: The small size and low power consumption of μLED are very suitable for wearable devices such as smartwatches and health trackers. (3) Augmented reality (AR) and virtual reality (VR): Due to its high brightness and fast response time, μLED is very suitable for AR and VR displays, providing a more realistic and comfortable immersive experience. (4) Automotive displays: μLED can be used in in-vehicle displays or electronic billboards outside vehicles, providing clearer and brighter display effects. (5) Large displays and commercial signs: μLED can achieve seamless splicing, making it suitable for large displays and commercial signs, providing high brightness and high contrast display effects.

[0005] Currently, one of the industry's goals remains to further reduce the power consumption of μLED display panels without increasing the circuit area and cost. Summary of the Invention

[0006] According to a first aspect of the present invention, a display panel is provided, comprising: a plurality of light-emitting modules, each of the light-emitting modules comprising: a plurality of light-emitting elements and a plurality of switches, the switches being coupled to the light-emitting elements. The switches include a first switch group and a second switch group, respectively controlled by a first light-emitting signal and a second light-emitting signal. Within a first sub-frame, the second light-emitting signal controls the second switch group to be on and the first light-emitting signal controls the first switch group to be off, such that the light-emitting elements and the second switch group form a first light-emitting path; and within a second sub-frame, the second light-emitting signal controls the second switch group to be off and the first light-emitting signal controls the first switch group to be on, such that the light-emitting elements and the first switch group form a second light-emitting path.

[0007] According to a second aspect of the present invention, a driving method for a display panel is provided, comprising: in a first sub-frame, a second light-emitting signal controls a second group of switches to be turned on and a first light-emitting signal controls a first group of switches to be turned off, such that a plurality of light-emitting elements and the second group of switches form a first light-emitting path; and in a second sub-frame, the second light-emitting signal controls the second group of switches to be turned off and the first light-emitting signal controls the first group of switches to be turned on, such that the light-emitting elements and the first group of switches form a second light-emitting path, wherein the first group of switches and the second group of switches are respectively controlled by the first light-emitting signal and the second light-emitting signal, and wherein the first group of switches and the second group of switches are coupled to the light-emitting elements.

[0008] To provide a better understanding of the above and other aspects of the present invention, specific embodiments are described below in conjunction with the accompanying drawings: Simple Explanation of the Diagram

[0009] Figure 1 illustrates a schematic diagram of a μLED display panel according to the first embodiment of this invention. Figures 2A and 2B show schematic diagrams of a μLED display panel according to the second embodiment of this case. Figures 3A and 3B show schematic diagrams of a μLED display panel according to a third embodiment of this invention. Figure 4 illustrates a schematic diagram of a μLED display panel according to the fourth embodiment of this case. Figure 5 illustrates a schematic diagram of a μLED display panel according to the fifth embodiment of this case. Figure 6 illustrates a schematic diagram of a μLED display panel according to the sixth embodiment of this case. Figure 7 illustrates a schematic diagram of a μLED display panel according to the seventh embodiment of this case. Implementation

[0010] The technical terms used in this specification are based on common terminology in the field. Where this specification provides explanations or definitions for certain terms, the interpretation of those terms shall be based on the explanations or definitions provided in this specification. Each of the embodiments disclosed herein has one or more technical features. Where feasible, those skilled in the art may selectively implement some or all of the technical features in any embodiment, or selectively combine some or all of the technical features in these embodiments.

[0011] First Embodiment

[0012] Figure 1 illustrates a schematic diagram of a μLED display panel according to a first embodiment of this invention. The μLED display panel 100 includes: a plurality of pixel circuits 110_1, 110_2, 110_3... and a plurality of display modules 120 coupled to the pixel circuits 110_1, 110_2, 110_3... The display data Data_R, Data_G, and Data_R provided to the pixel circuits 110_1, 110_2, and 110_3 are provided by a source drive circuit (not shown), where VDD represents the drive voltage.

[0013] Each display module 120 includes: a first light-emitting element P1; a second light-emitting element P2; a third light-emitting element P3; a first switch SW1 coupled to the first light-emitting element P1 and controlled by a first light-emitting signal EM1; a second switch SW2 coupled to the second light-emitting element P2 and controlled by the first light-emitting signal EM1; a third switch SW3 coupled to the third light-emitting element P3 and controlled by the first light-emitting signal EM1; a fourth switch SW4 coupled between the first light-emitting element P1 and the second light-emitting element P2 and controlled by a second light-emitting signal EM2; and a fifth switch SW5 coupled between the first light-emitting element P1 and the third light-emitting element P3 and controlled by the second light-emitting signal EM2. The first light-emitting signal EM1 and the second light-emitting signal EM2 are mutually exclusive; that is, when one of the first light-emitting signal EM1 and the second light-emitting signal EM2 is on, the other of the first light-emitting signal EM1 and the second light-emitting signal EM2 is not on. Furthermore, the first switch group includes the first switch SW1, the second switch SW2, and the third switch SW3. The second switch group includes the fourth switch SW4 and the fifth switch SW5.

[0014] Here, the first light-emitting element P1, the second light-emitting element P2 and the third light-emitting element P3 are illustrated using a micro LED as an example, and the first to fifth switches SW1-SW5 are illustrated using a field-effect transistor (TFT) as an example, but this case is not limited to these.

[0015] Furthermore, the first light-emitting element P1 has a first terminal coupled to the first terminal of the first switch SW1, and a second terminal coupled to the ground terminal VSS. The second light-emitting element P2 has a first terminal coupled to the pixel circuit 110_2, and a second terminal coupled to the second terminal of the second switch SW2. The third light-emitting element P3 has a first terminal coupled to the pixel circuit 110_3, and a second terminal coupled to the second terminal of the third switch SW3.

[0016] The first switch SW1 has: a first terminal coupled to the first light-emitting element P1; a second terminal coupled to the pixel circuit 110_1; and a control terminal for receiving the first light-emitting signal EM1.

[0017] The second switch SW2 has: a first terminal coupled to the ground terminal VSS; a second terminal coupled to the second light-emitting element P2; and a control terminal for receiving the first light-emitting signal EM1.

[0018] The third switch SW3 has: a first terminal coupled to the ground terminal VSS; a second terminal coupled to the third light-emitting element P3; and a control terminal for receiving the first light-emitting signal EM1.

[0019] The fourth switch SW4 has: a first terminal coupled to the first light-emitting element P1; a second terminal coupled to the second light-emitting element P2; and a control terminal for receiving the second light-emitting signal EM2.

[0020] The fifth switch SW5 has: a first terminal coupled to the first light-emitting element P1; a second terminal coupled to the third light-emitting element P3; and a control terminal for receiving the second light-emitting signal EM2.

[0021] When displayed, a frame is divided into two sub-frames: the first sub-frame SF1 and the second sub-frame SF2.

[0022] Referring again to Figure 1, an operation diagram of the μLED display panel of the first embodiment of this case will be described.

[0023] When the first sub-frame SF1 is in operation, the second light-emitting signal EM2 controls the fourth switch SW4 and the fifth switch SW5 to be on, and the first light-emitting signal EM1 controls the first switch SW1, the second switch SW2 and the third switch SW3 to be off.

[0024] When the second sub-frame SF2 is in operation, the second light-emitting signal EM2 controls the fourth switch SW4 and the fifth switch SW5 to be off, and the first light-emitting signal EM1 controls the first switch SW1, the second switch SW2 and the third switch SW3 to be on.

[0025] Below, we will use the first light-emitting element P1, the second light-emitting element P2, and the third light-emitting element P3 as red micro LED (R), green micro LED (G), and blue micro LED (B), respectively, to illustrate the process.

[0026] Table 1 below shows the currents supplied by pixel circuits 110_1-110_3 to the first light-emitting element P1, the second light-emitting element P2, and the third light-emitting element P3, respectively, under the first sub-frame SF1 and the second sub-frame SF2. Here, it is assumed that the luminous efficiency of the light-emitting element has a linear relationship with the current, and that the ideal current values ​​supplied to the red micro-LED (R), green micro-LED (G), and blue micro-LED (B) are a, b, and c, respectively. Table 1 First Embodiment SF1 SF [2] R G B R G B a ≥ b + c 0 b c a–(b + c) 0 0 a < b + c a = 0 0 0 0 0 b c b = 0 0 0 a 0 0 c – a c = 0 0 a 0 0 b – a 0

[0027] As shown in Table 1, during display, when a ≥ b + c, then (1) in the first sub-frame SF1, the currents supplied by these pixel circuits to the first light-emitting element P1, the second light-emitting element P2, and the third light-emitting element P3 are 0, b, and c, respectively. However, because the light-emitting signal EM2 controls the fourth switch SW4 and the fifth switch SW5 to be on, the current flowing through the first light-emitting element P1 in the first sub-frame SF1 is b + c; and (2) in the second sub-frame SF2, the currents supplied by these pixel circuits to the first light-emitting element P1, the second light-emitting element P2, and the third light-emitting element P3 are a – (b + c), 0, and 0, respectively. Since the current required to achieve the set brightness of the first light-emitting element P1 is a, but the current flowing through the first light-emitting element P1 in the first sub-frame SF1 is b + c, in the second sub-frame SF2, only the current a – (b + c) needs to be added to the first light-emitting element P1 to achieve the set brightness. Regarding the currents b and c required to achieve the set brightness of the second light-emitting element P2 and the third light-emitting element P3, respectively, since the currents flowing through the second light-emitting element P2 and the third light-emitting element P3 within the first sub-frame SF1 are already b and c, respectively, no further current needs to be supplied to the second light-emitting element P2 and the third light-emitting element P3 within the second sub-frame SF2 to achieve the set brightness. In this case, within the first sub-frame SF1, the first light-emitting element P1, the second light-emitting element P2, the third light-emitting element P3, the fourth switch SW4, and the fifth switch SW5 can be considered as forming the first light-emitting path. Within the second sub-frame SF2, the first light-emitting element P1 and the first switch SW1 can be considered as forming the second light-emitting path. Of course, depending on different situations, the light-emitting elements and / or switches included in the first and second light-emitting paths may also change.

[0028] Other cases in Table 1 above can be deduced in the same way as described above, and will not be repeated here.

[0029] In this way, the luminous efficiency of the first light-emitting element P1, the second light-emitting element P2, and the third light-emitting element P3 in Figure 1 can be equivalent to the luminous efficiency when the ideal current values ​​provided to the red micro-LED (R), the green micro-LED (G), and the blue micro-LED (B) are a, b, and c, respectively.

[0030] The values ​​in Table 2 below further illustrate the luminous efficiency and power saving efficiency of the first embodiment of this case. Table 2 SF1 SF2 R G B R G B nit 225 660 56 59 0 0 Cd / A 19 102 15 10 - - Light-emitting element current (μA) 31 19 12 7 0 0 Panel current (A) 4.4 Power (W) 39.5

[0031] In Table 2 above, the total voltage across the first sub-frame SF1 is approximately 9.5V, and the data Data_R shown in red is idle; in the second sub-frame SF2, the total voltage across the second sub-frame is approximately 7V / 9.5V. The power saved in Table 2 is approximately 27.6% (the conventional power requirement is approximately 54.6W).

[0032] In short, in the first embodiment of this case, if the luminous brightness of the first light-emitting element P1 and / or the second light-emitting element P2 and / or the third light-emitting element P3 in the first sub-frame SF1 is insufficient (i.e., the current is insufficient), then in the second sub-frame SF2, the luminous brightness of the first light-emitting element P1 and / or the second light-emitting element P2 and / or the third light-emitting element P3 is supplemented (i.e., the current is supplemented) to achieve the set display brightness.

[0033] Furthermore, in the first embodiment of this case, if the luminous brightness of the first light-emitting element P1 and / or the second light-emitting element P2 and / or the third light-emitting element P3 in the first sub-frame SF1 is sufficient (i.e., the current is sufficient), then in the second sub-frame SF2, the luminous brightness of the first light-emitting element P1 and / or the second light-emitting element P2 and / or the third light-emitting element P3 is controlled to be non-luminous (i.e., the current supplied by the pixel to the relevant light-emitting element is 0).

[0034] Second Embodiment

[0035] Figures 2A and 2B show schematic diagrams of a μLED display panel according to the second embodiment of this invention, wherein the μLED display panel 100 includes pixel circuits 110_1 to 110_6. Unlike the first embodiment, in the second embodiment, in adjacent display modules 120, the first light-emitting signal EM1 and the second light-emitting signal EM2 are alternately arranged. That is, assuming that in a certain display module 120, the first light-emitting signal EM1 is applied to the first to third switches SW1-SW3, and the second light-emitting signal EM2 is applied to the fourth to fifth switches SW4-SW5, then in the display modules 120 above, below, or to the left and right of it, the first light-emitting signal EM1 is applied to the fourth to fifth switches SW4-SW5, and the second light-emitting signal EM2 is applied to the first to third switches SW1-SW3.

[0036] The driving method of the display panel in the second embodiment can be basically referred to Figure 1, so its details are omitted here.

[0037] In this way, the second embodiment can avoid seeing flickering because adjacent display modules are displayed alternately in different sub-frames.

[0038] Third Embodiment

[0039] Figures 3A and 3B show schematic diagrams of a μLED display panel 300 according to a third embodiment of this invention. The third embodiment is derived from a variation of the second embodiment.

[0040] In Figure 3, one of every two pixel circuits receiving the red display data Data_R can be omitted; that is, these pixel circuits receiving the red display data Data_R can be shared. Furthermore, in the third embodiment, the display panel 300 further includes multiplexers 310_1 and 310_2, wherein multiplexer 310_1 is controlled by multiplexer signal MUX_even, and multiplexer 310_2 is controlled by multiplexer signal MUX_odd. Multiplexer signals MUX_even and MUX_odd are mutually exclusive.

[0041] The driving method of the display panel in the third embodiment can be basically referred to Figure 1 and Figure 2, so its details are omitted here.

[0042] In other words, in the third embodiment, the pixel circuits that receive the red display data Data_R can be shared, thereby saving the number of channels in the source drive circuit (i.e., saving the circuit cost of the source drive circuit) and saving the layout space of the display panel.

[0043] Fourth embodiment

[0044] Figure 4 illustrates a schematic diagram of a μLED display panel according to the fourth embodiment of this invention. The circuit diagram of the display panel of the fourth embodiment is basically the same as that of the display panel 100 of the first embodiment. The difference is that when in always-on display power-saving mode (e.g., displaying only a monochrome image), only the first sub-frame SF1 is retained, and the second sub-frame SF2 is not present. That is, in always-on display power-saving mode (displaying a monochrome image), the first light-emitting signal EM1 is always off (i.e., the first to third switches SW1-SW3 controlled by the first light-emitting signal EM1 are always off), and the second light-emitting signal EM2 is always on (i.e., the fourth to fifth switches SW4-SW5 controlled by the second light-emitting signal EM2 are always on). Moreover, the red display data Data_R is idle, and when displaying a monochrome image, the white dots are cyan, thereby saving 38% of power compared to normal RGB operation. Furthermore, if the fourth embodiment can be combined with a low frame rate or partial GOA scan, the system can be more energy-efficient, where GOA stands for gate on array.

[0045] Table 3 below shows some relevant data for the always-ON display power-saving mode. Table 3 SF1 R G B nit 225 660 56 Cd / A 19 102 15 Light-emitting element current (μA) 31 19 12 W(x, y) (white dot) (0.288, 0.332) Panel current (A) 3.55 Power (W) 33.8

[0046] In the fourth embodiment, the power saving efficiency is approximately 38% (the conventional power requirement is approximately 54.6W).

[0047] Fifth embodiment

[0048] Figure 5 illustrates a schematic diagram of a μLED display panel according to a fifth embodiment of this invention. The μLED display panel 500 includes a micro-integrated circuit (μIC) 510 and a plurality of light-emitting elements P1, P2, and P3. That is, in the fifth embodiment, the micro-integrated circuit (μIC) 510 can be used to implement the pixel circuits 110_1, 110_2, 110_3… of the above embodiments, and the first to fifth switches SW1-SW5.

[0049] In the fifth embodiment of this invention, the beginning and end ends of some light-emitting elements (e.g., P2 and P3) are connected to a micro-integrated circuit (μIC) 510. Furthermore, in Figure 5, the displayed data Data includes: Data_R, Data_G, and Data_R. CLK represents the clock signal.

[0050] Table 4 below shows some relevant data for the fifth embodiment. Table 4 SF1 SF2 R G B R G B nit 225 660 56 59 0 0 Cd / A 19 102 15 10 - - Light-emitting element current (μA) 31 19 12 7 0 0 Panel current (A) 4.4 Power (W) 26.4

[0051] In Table 4 above, the total voltage across the first sub-frame SF1 is approximately 6V, and the data Data_R shown in red is idle; the total voltage across the second sub-frame SF2 is also approximately 6V. Table 4 shows that the power saved is approximately 52% (the conventional power requirement is approximately 54.6W).

[0052] Sixth Embodiment

[0053] Figure 6 illustrates a schematic diagram of a μLED display panel according to a sixth embodiment of this invention. In Figure 6, a first switch SW1 is coupled to the first light-emitting element P1 and controlled by a first light-emitting signal EM1; a second switch SW2 is coupled to the second light-emitting element P2 and controlled by the first light-emitting signal EM1; a third switch SW3 is coupled to the third light-emitting element P3 and controlled by the first light-emitting signal EM1; and a fourth switch SW4 is coupled between the first light-emitting element P1 and the second light-emitting element P2 and controlled by a second light-emitting signal EM2. The first light-emitting signal EM1 and the second light-emitting signal EM2 are mutually exclusive; that is, when one of the first light-emitting signal EM1 and the second light-emitting signal EM2 is on, the other of the first light-emitting signal EM1 and the second light-emitting signal EM2 is not on.

[0054] When the first sub-frame SF1 is active, the second light-emitting signal EM2 controls the fourth switch SW4 to be on, and the first light-emitting signal EM1 controls the first switch SW1, the second switch SW2, and the third switch SW3 to be off. Therefore, when the first sub-frame SF1 is active, current flows through the second light-emitting element P2, the fourth switch SW4, and the first light-emitting element P1.

[0055] When the second sub-frame SF2 is active, the second light-emitting signal EM2 controls the fourth switch SW4 to be off, and the first light-emitting signal EM1 controls the first switch SW1, the second switch SW2, and the third switch SW3 to be on. Therefore, when the second sub-frame SF2 is active, current flows through the first light-emitting element P1 and the first switch SW1, and another current flows through the third light-emitting element P3 and the third switch SW3.

[0056] The values ​​in Table 5 below further illustrate the luminous efficiency and power saving efficiency of the sixth embodiment of this case. Table 5 SF1 SF2 R G B R G B nit 778 0 166 0 56 Cd / A 16 102 - 17 - 15 Light-emitting element current (μA) 19 0 26 0 12 Panel current (A) 6.04 Power (W) 46.8

[0057] In Table 5 above, the total voltage across the first sub-frame SF1 is approximately 9V, and the data Data_R shown in red is idle; the total voltage across the second sub-frame SF2 is also approximately 9V. The power savings shown in Table 5 are approximately 14.3%.

[0058] Seventh Embodiment

[0059] Figure 7 illustrates a schematic diagram of a μLED display panel according to the seventh embodiment of this invention. In Figure 7, a first switch SW1 is coupled to the first light-emitting element P1 and controlled by a first light-emitting signal EM1; a second switch SW2 is coupled to the second light-emitting element P2 and controlled by the first light-emitting signal EM1; a third switch SW3 is coupled to the third light-emitting element P3 and controlled by the first light-emitting signal EM1; and a fourth switch SW4 is coupled between the third light-emitting element P3 and the second light-emitting element P2 and controlled by a second light-emitting signal EM2. The first light-emitting signal EM1 and the second light-emitting signal EM2 are mutually exclusive; that is, when one of the first light-emitting signal EM1 and the second light-emitting signal EM2 is on, the other of the first light-emitting signal EM1 and the second light-emitting signal EM2 is not on.

[0060] When the first sub-frame SF1 is active, the second light-emitting signal EM2 controls the fourth switch SW4 to be on, and the first light-emitting signal EM1 controls the first switch SW1, the second switch SW2, and the third switch SW3 to be off. Therefore, when the first sub-frame SF1 is active, current flows through the third light-emitting element P3, the fourth switch SW4, and the second light-emitting element P2.

[0061] When the second sub-frame SF2 is active, the second light-emitting signal EM2 controls the fourth switch SW4 to be off, and the first light-emitting signal EM1 controls the first switch SW1, the second switch SW2, and the third switch SW3 to be on. Therefore, when the second sub-frame SF2 is active, current flows through the first light-emitting element P1 and the first switch SW1, and another current flows through the second light-emitting element P2 and the second switch SW2.

[0062] The values ​​in Table 6 below further illustrate the luminous efficiency and power saving efficiency of the seventh embodiment of this case. Table 6 SF1 SF2 R G B R G B nit 0 482 284 235 0 Cd / A - 109 15 20 115 - Light-emitting element current (μA) 0 12 37 7 0 Panel current (A) 6.4 Power (W) 47.9

[0063] In Table 6 above, the total voltage across the first sub-frame SF1 is approximately 9.5V, and the data Data_R shown in red is idle; the total voltage across the second sub-frame SF2 is also approximately 9.5V. The power savings shown in Table 6 are approximately 12.3%.

[0064] One embodiment of this invention further discloses a driving method for a display panel, comprising: within a first sub-frame, a second light-emitting signal controlling a second group of switches to be turned on and a first light-emitting signal controlling a first group of switches to be turned off, such that a plurality of light-emitting elements and the second group of switches form a first light-emitting path; and within a second sub-frame, the second light-emitting signal controlling the second group of switches to be turned off and the first light-emitting signal controlling the first group of switches to be turned on, such that the light-emitting elements and the first group of switches form a second light-emitting path, wherein the first group of switches and the second group of switches are respectively controlled by the first light-emitting signal and the second light-emitting signal, and the first group of switches and the second group of switches are coupled to the light-emitting elements.

[0065] As can be seen from the above, in the above embodiments of this case, by setting the display module, the power saving of the display panel can be achieved without increasing the circuit cost and circuit area of ​​the display panel.

[0066] The foregoing primarily describes the solutions provided in the embodiments of this application from the perspective of the display panel. It is understood that, in order to achieve the above functions, the display panel may include other corresponding hardware structures. Those skilled in the art can use different methods to implement the functions described in each specific application, but such implementations should not be considered beyond the scope of this application.

[0067] While this application may describe many specific details, these should not be construed as limiting the scope of the claimed invention, but rather as descriptions of the characteristics of particular embodiments. In this description, certain features described in the context of a single embodiment may also be implemented in combination in that single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments. Furthermore, while features may initially be described as functioning in certain combinations, or even initially described as such combinations, in some cases one or more features may be removed from that combination, and the illustrated combination may be for a sub-combination or a variation of a sub-combination. Similarly, while operations are depicted in the illustrations as being performed in a specific order, this should not be construed as requiring these operations to be performed in the specific order or sequence shown, or that all depicted operations must be performed to achieve the desired result.

[0068] Although the above embodiments only disclose some examples and implementation methods, the examples, implementation methods, and other implementation methods can be changed, modified, and enhanced based on the disclosed content.

[0069] In summary, although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

[0070] 100:μLED display panel 110_1, 110_2, 110_3, 110_4, 110_5, 110_6: Pixel circuit 120: Display Module Data_R, Data_G, and Data_R: Display data VDD: Drive voltage EM1, EM2: Light emission signals VSS: Grounding terminal P1-P3: Light-emitting elements SW1-SW5: Switches SF1, SF2: Sub-frames 300:μLED display panel 310_1 and 310_2: Multiplexers MUX_even, MUX_odd: Multiplexer signals 500:μLED display panel 510: Miniature Integrated Circuits (μIC) Data: Displays information Clock signal: CLK

Claims

1. A display panel, comprising: A plurality of display modules, each display module including a plurality of light-emitting elements and a plurality of switches, the switches being coupled to the light-emitting elements, wherein the switches include a first switch group and a second switch group, respectively controlled by a first light-emitting signal and a second light-emitting signal, wherein, in a first sub-frame, the second light-emitting signal controls the second switch group to be on and the first light-emitting signal controls the first switch group to be off, so that the light-emitting elements and the second switch group form a first light-emitting path; and in a second sub-frame, the second light-emitting signal controls the second switch group to be off and the first light-emitting signal controls the first switch group to be on, so that the light-emitting elements and the first switch group form a second light-emitting path, wherein, in a always-on power-saving display mode, the first switch group controlled by the first light-emitting signal is never on, and the second switch group controlled by the second light-emitting signal is always on.

2. The display panel as described in claim 1, wherein, The light-emitting elements include: a first light-emitting element, a second light-emitting element, and a third light-emitting element; the first switch group includes a first switch, a second switch, and a third switch; the second switch group includes a fourth switch and a fifth switch; the first switch is coupled to the first light-emitting element and controlled by the first light-emitting signal; the second switch is coupled to the second light-emitting element and controlled by the first light-emitting signal; the third switch is coupled to the third light-emitting element and controlled by the first light-emitting signal; the fourth switch is coupled between the first light-emitting element and the second light-emitting element and controlled by the second light-emitting signal; and the fifth switch is coupled between the first light-emitting element and the third light-emitting element and controlled by the second light-emitting signal, wherein when one of the first light-emitting signal and the second light-emitting signal is on, the other of the first light-emitting signal and the second light-emitting signal is off.

3. The display panel as described in claim 2, wherein, Within the first sub-frame, in response to the fact that the luminous brightness of the first light-emitting element and / or the second light-emitting element and / or the third light-emitting element does not reach a set brightness, the luminous brightness of the first light-emitting element and / or the second light-emitting element and / or the third light-emitting element is supplemented within the second sub-frame to reach the set brightness; And within the first sub-frame, in response to the light emission brightness of the first light-emitting element and / or the second light-emitting element and / or the third light-emitting element reaching the set brightness, within the second sub-frame, the first light-emitting element and / or the second light-emitting element and / or the third light-emitting element are controlled to not emit light.

4. The display panel as described in claim 1, wherein, In a plurality of adjacent display modules, the first light-emitting signal and the second light-emitting signal are alternately set.

5. The display panel as described in claim 4, wherein, A plurality of pixel circuits that receive a predetermined display data are shared, wherein the pixel circuits are coupled to the display modules.

6. The display panel as described in claim 1, wherein, The first and second switch groups are implemented by a micro-integrated circuit; and the two ends of some of the light-emitting elements are connected to the micro-integrated circuit.

7. The display panel as described in claim 1, wherein, The light-emitting elements include: a first light-emitting element, a second light-emitting element, and a third light-emitting element; the first switch group includes a first switch, a second switch, and a third switch; the second switch group includes a fourth switch; the first switch is coupled to the first light-emitting element and controlled by the first light-emitting signal; the second switch is coupled to the second light-emitting element and controlled by the first light-emitting signal; the third switch is coupled to the third light-emitting element and controlled by the first light-emitting signal; and the fourth switch is coupled between the first light-emitting element and the second light-emitting element, or the fourth switch is coupled between the second light-emitting element and the third light-emitting element, and the fourth switch is controlled by the second light-emitting signal, wherein when one of the first light-emitting signal and the second light-emitting signal is on, the other of the first light-emitting signal and the second light-emitting signal is off.

8. A method for driving a display panel, comprising: Within a first sub-frame, a second light-emitting signal controls a second group of switches to be turned on and a first light-emitting signal controls a first group of switches to be turned off, so that a plurality of light-emitting elements and the second group of switches form a first light-emitting path. In a second sub-frame, the second light-emitting signal controls the second switch group to be off and the first light-emitting signal controls the first switch group to be on, so that the light-emitting elements and the first switch group form a second light-emitting path. The first switch group and the second switch group are respectively controlled by the first light-emitting signal and the second light-emitting signal. The first switch group and the second switch group are coupled to the light-emitting elements. In a always-on power-saving display mode, the first switch group controlled by the first light-emitting signal is never on, and the second switch group controlled by the second light-emitting signal is always on.

9. The driving method for the display panel as described in claim 8, wherein, The light-emitting elements include: a first light-emitting element, a second light-emitting element, and a third light-emitting element; the first switch group includes a first switch, a second switch, and a third switch; the second switch group includes a fourth switch and a fifth switch; the first switch is coupled to the first light-emitting element and controlled by the first light-emitting signal; the second switch is coupled to the second light-emitting element and controlled by the first light-emitting signal; the third switch is coupled to the third light-emitting element and controlled by the first light-emitting signal; the fourth switch is coupled between the first light-emitting element and the second light-emitting element and controlled by the second light-emitting signal; and the fifth switch is coupled between the first light-emitting element and the third light-emitting element and controlled by the second light-emitting signal, wherein... Within the first sub-frame, in response to the first light-emitting element and / or the second light-emitting element and / or the third light-emitting element not reaching a set brightness, the second sub-frame supplements the light-emitting element and / or the second light-emitting element and / or the third light-emitting element to reach the set brightness; and within the first sub-frame, in response to the first light-emitting element and / or the second light-emitting element and / or the third light-emitting element having reached the set brightness, the second sub-frame controls the first light-emitting element and / or the second light-emitting element and / or the third light-emitting element to not emit light.

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