Driving method of light emitting substrate, driving circuit and display device

Abstract

The embodiment of the present disclosure provides a driving method of a light-emitting substrate, a driving circuit and a display device. The driving method of the light-emitting substrate, wherein the light-emitting substrate comprises at least one control area, at least one control area comprises a plurality of light-emitting subareas, at least one light-emitting subarea comprises a plurality of light-emitting elements connected in series and / or parallel to each other; the light-emitting subarea comprises a first signal end and a second signal end, in the same control area, the first signal ends of all the light-emitting subareas are electrically connected to each other, and the second signal ends of different light-emitting subareas are independent of each other; the driving method comprises: loading a first signal to the first signal end in the control area; after providing the first signal, delaying for a first time length, and loading a second signal to the second signal end of each light-emitting subarea in the control area.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of semiconductor technology, and in particular to a driving method of a light-emitting substrate, a driving circuit and a display device. BACKGROUND

[0002] In the past two years, display devices with ultra-high contrast (>20000) and ultra-high brightness (peak brightness 1000 / 1400 nit) have become the development trend of the display industry, leading to the popularity of light-emitting diodes (e.g., mini light-emitting diodes (mini LED)), and display panel manufacturers have invested research and development resources to accelerate the process of light-emitting diode productization. SUMMARY

[0003] Embodiments of the present disclosure provide a driving method of a light-emitting substrate, a driving circuit and a display device. The driving method of the light-emitting substrate, wherein the light-emitting substrate comprises at least one control area, at least one control area comprises a plurality of light-emitting sub-areas, at least one light-emitting sub-area comprises a plurality of light-emitting elements connected in series and / or in parallel with each other; the light-emitting sub-area comprises a first signal end and a second signal end, in the same control area, the first signal ends of all light-emitting sub-areas are electrically connected to each other, and the second signal ends of different light-emitting sub-areas are independent of each other; the driving method comprises:

[0004] loading a first signal to the first signal end in the control area;

[0005] loading a second signal to the second signal end of each light-emitting sub-area in the control area after providing the first signal for a first time length.

[0006] In a possible implementation, the loading of the second signal to the second signal end of each light-emitting sub-area in the control area comprises:

[0007] sequentially loading a second signal to the second signal end of each light-emitting sub-area in the control area, so that the second signals of adjacent light-emitting sub-areas are sequentially delayed.

[0008] In a possible implementation, the time lengths of the second signals of any adjacent light-emitting sub-areas are equal.

[0009] In a possible implementation, the sequentially loading of the second signal to the second signal end of each light-emitting sub-area in the control area comprises:

[0010] sequentially loading a second signal to the second signal end of each light-emitting sub-area in the control area within the on period of the first signal.

[0011] In a possible implementation, the first module is specifically configured to sequentially load the second signal to the second signal end of each of the light-emitting sub-regions in the control region, so that the second signal of adjacent light-emitting sub-regions is sequentially delayed.

[0012] The first module is specifically configured to simultaneously load the second signal to the second signal end of each of the light-emitting sub-regions in the control region.

[0013] In a possible implementation, the first module is specifically configured to sequentially load the second signal to the second signal end of each of the light-emitting sub-regions in the control region, so that the second signal of adjacent light-emitting sub-regions is sequentially delayed.

[0014] The first module is specifically configured to sequentially load the second signal to the second signal end of each of the light-emitting sub-regions in the control region, so that the second signal of adjacent light-emitting sub-regions is sequentially delayed.

[0015] In a possible implementation, the first module is specifically configured to sequentially load the second signal to the second signal end of each of the light-emitting sub-regions in the control region, so that the second signal of adjacent light-emitting sub-regions is sequentially delayed.

[0016] The first module is specifically configured to sequentially load the second signal to the second signal end of each of the light-emitting sub-regions in the control region, so that the second signal of adjacent light-emitting sub-regions is sequentially delayed.

[0017] In a possible implementation, the driving method further includes:

[0018] The first module is specifically configured to sequentially load the second signal to the second signal end of each of the light-emitting sub-regions in the control region, so that the second signal of adjacent light-emitting sub-regions is sequentially delayed.

[0019] The present disclosure further provides a driving circuit, which includes:

[0020] The first module is specifically configured to sequentially load the second signal to the second signal end of each of the light-emitting sub-regions in the control region, so that the second signal of adjacent light-emitting sub-regions is sequentially delayed.

[0021] The second module is specifically configured to load the second signal to the second signal end of each of the light-emitting sub-regions in the control region after a first time delay after the first signal is provided.

[0022] In a possible implementation, the first module is specifically configured to sequentially load the second signal to the second signal end of each of the light-emitting sub-regions in the control region, so that the second signal of adjacent light-emitting sub-regions is sequentially delayed.

[0023] In a possible implementation, the first module is specifically configured to sequentially load the second signal to the second signal end of each of the light-emitting sub-regions in the control region, so that the second signal of adjacent light-emitting sub-regions is sequentially delayed.

[0024] In a possible implementation, the first module is specifically configured to sequentially load the second signal to the second signal end of each of the light-emitting sub-regions in the control region, so that the second signal of adjacent light-emitting sub-regions is sequentially delayed.

[0025] In a possible implementation, the first module is specifically configured to load the first signal to the first signal terminal in the control area at a driving frequency of 15-25 MHz.

[0026] In a possible implementation, the driving circuit further includes a third module, which is configured to determine the end of the first signal in the current control area and provide a third signal to the light-emitting sub-area in the next control area.

[0027] The display device provided in the embodiments of the present disclosure includes at least one driving circuit provided in the embodiments of the present disclosure, and further includes a light-emitting substrate, wherein the light-emitting substrate includes at least one control area, at least one control area includes a plurality of light-emitting sub-areas, and at least one light-emitting sub-area includes a plurality of light-emitting elements connected in series and / or in parallel with each other; the light-emitting sub-area includes a first signal terminal and a second signal terminal, the first signal terminals of all the light-emitting sub-areas in the same control area are electrically connected to each other, and the second signal terminals of different light-emitting sub-areas are independent of each other.

[0028] In a possible implementation, the driving circuit is a light-emitting control chip. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 FIG. 1 is a schematic diagram of a partial structure of a display device;

[0030] Figure 2 FIG. 2 is a schematic diagram of a structure including two control areas;

[0031] Figure 3A FIG. 3 is a schematic diagram of a connection of light-emitting elements in a light-emitting sub-area;

[0032] Figure 3B FIG. 4 is another schematic diagram of a connection of light-emitting elements in a light-emitting sub-area;

[0033] Figure 3C FIG. 5 is another schematic diagram of a connection of light-emitting elements in a light-emitting sub-area;

[0034] Figure 4 FIG. 6 is a driving timing diagram of a related art;

[0035] Figure 5 FIG. 7 is a driving flowchart of a light-emitting substrate provided in the embodiments of the present disclosure;

[0036] Figure 6 FIG. 8 is a driving timing diagram provided in the embodiments of the present disclosure;

[0037] Figure 7 FIG. 9 is another driving timing diagram provided in the embodiments of the present disclosure;

[0038] Figure 8 Fig. 8 is a schematic diagram of a signal loaded in the first signal terminal before and after frequency doubling. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without any inventive effort fall within the protection scope of the present disclosure.

[0040] Unless otherwise defined, technical terms or scientific terms used in the present disclosure shall have the ordinary meaning understood by a person of ordinary skill in the art to which the present disclosure pertains. The terms "first", "second", and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are used to distinguish different components. The terms "comprise", "include" and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right", and the like are used only to represent relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships can also be changed accordingly.

[0041] In order to keep the following description of the embodiments of the present disclosure clear and concise, the present disclosure omits the detailed description of known functions and known components.

[0042] In the mini light-emitting diode driving, due to the large power consumption of the lamp panel, for example, with more than 1000 partitions, the peak design power of the lamp panel will reach more than 100W. In high-power driving, the power supply part will generate a large electromagnetic interference signal, causing some signals on the light-emitting substrate to be distorted, resulting in signal errors. This will not only affect the product certification, but the most direct impact will be to interfere with the signals controlling the brightness of each light-emitting partition, causing the partition brightness data to be incorrect, and the partition to be abnormally lit. For example, in a black picture display, some partitions are abnormally lit due to data errors.

[0043] The light-emitting substrate comprises at least one control area, the at least one control area comprises a plurality of light-emitting subareas, and the at least one light-emitting subarea comprises a plurality of light-emitting elements connected in series and / or in parallel with each other; the light-emitting subarea comprises a first signal end and a second signal end, in the same control area, the first signal ends of all light-emitting subareas are electrically connected with each other, and the second signal ends of different light-emitting subareas are independent of each other. Specifically, the light-emitting substrate comprises 1680 light-emitting subareas formed by 28 rows*60 columns, each driving circuit can correspond to drive 84 light-emitting subareas formed by 28 rows*3 columns, and so on. The light-emitting substrate uses 20 driving circuits as an example for illustration.

[0044] Specifically, taking a plurality of light-emitting subareas corresponding to a driving circuit as an example, combined with Figures 1-3C , wherein Figure 1 is a schematic diagram of 28 rows*3 columns forming four control areas SW and 84 light-emitting subareas 10 corresponding to a driving circuit, Figure 2 is Figure 1 is a partial enlarged distribution schematic diagram of part of the control areas SW in Figure 3A is a distribution schematic diagram of light-emitting elements in each light-emitting subarea, comprising a plurality of light-emitting elements connected in series and in parallel with each other; Figure 3B is another distribution schematic diagram of light-emitting elements in each light-emitting subarea, comprising a plurality of light-emitting elements connected in series and in parallel with each other; Figure 3C is another distribution schematic diagram of light-emitting elements in each light-emitting subarea, comprising a plurality of light-emitting elements connected in series with each other; Figure 1 In , a driving circuit 5 corresponds to four control areas SW, which are a first control area SW1, a second control area SW2, a third control area SW3, and a fourth control area SW4, respectively. Each control area SW comprises 21 light-emitting subareas 10 formed by 7 rows*3 columns, and each light-emitting subarea 10 comprises a plurality of light-emitting elements 100 connected in series and / or in parallel with each other, for example, Figure 3A In , each light-emitting subarea 10 comprises two light-emitting element strings, for example, a first light-emitting element string and a second light-emitting element string, wherein the first light-emitting element string comprises a first light-emitting element 101, a second light-emitting element 102, and a third light-emitting element 103 connected in series, the second light-emitting element string comprises a fourth light-emitting element 104, a fifth light-emitting element 105, and a sixth light-emitting element 106 connected in series, the anodes of the starting light-emitting elements of the two light-emitting element strings are electrically connected with each other as a first signal end A1 of the light-emitting subarea 10 and connected to a first wire 2, and the cathodes of the terminal light-emitting elements of the two light-emitting element strings are electrically connected with each other as a second signal end A2 of the light-emitting subarea 10 and connected to a second wire 3; specifically, the driving circuit can be a driving chip LED driver;

[0045] In the first control area SW1, the first signal terminals A1 of all the light-emitting subareas 10 are electrically connected to each other, for example, in the same first control area SW1, the first signal terminals A1 of the light-emitting subareas 10 in the same row are all connected to the first wires 2, the first wires 2 of the light-emitting subareas 10 in different rows are electrically connected to the third wires 6 through the first vias K1, and are further electrically connected to the corresponding driving circuits 5; the second control area SW2, the third control area SW3, and the fourth control area SW4 are similar, in this way, the first signal terminals A1 of all the light-emitting subareas 10 in the same control area SW are electrically connected together, that is, the anodes of all the light-emitting elements 100 in the same control area SW are electrically connected together and are controlled by one third wire 6 of the corresponding driving circuit 5, and the four control areas correspond to four third wires 6;

[0046] As for the second signal terminals A2 of each light-emitting subarea 10 in each control area SW, they can be electrically connected to the fourth wires 4 through the corresponding second wires 3 and the second vias K2, for example, in the first control area SW1, the light-emitting subareas 10 in the last row of the first column are electrically connected to the driving circuit 5 through the first fourth wire 4 from the left, the light-emitting subareas 10 in the second-to-last row of the first column are electrically connected to the driving circuit 5 through the second fourth wire 4 from the left, and so on, in the corresponding control area SW of the same driving circuit 5, one light-emitting subarea 10 in each control area SW is electrically connected to the driving circuit 5 through the same fourth wire 4, for example, the light-emitting subarea 10 in the last row of the first column of the first control area SW1, the light-emitting subarea 10 in the last row of the first column of the second control area SW2, the light-emitting subarea 10 in the last row of the first column of the third control area SW3, and the light-emitting subarea 10 in the last row of the first column of the fourth control area SW4 are all electrically connected to the same first fourth wire 4 from the left, in this way, the independent control of the second signal terminals A2 of different light-emitting subareas 10 in the same control area is realized, each control area corresponds to 21 fourth wires 4, forming 21 corresponding channels ch1……ch21 of the second signal terminals A1;

[0047] As Figure 4The driving timing diagram of the light-emitting substrate of the related art is shown in the figure, wherein Vsy represents a synchronization signal, Pgate1 represents a signal loaded on the first third trace 6 from the left, which is used for controlling the first signal end A1 of all the light-emitting sub-regions 10 in the first control region SW1, Pgate2 represents a signal loaded on the second third trace 6 from the left, which is used for controlling the first signal end A1 of all the light-emitting sub-regions 10 in the second control region SW2, Pgate3 represents a signal loaded on the first third trace 6 from the left, which is used for controlling the first signal end A1 of all the light-emitting sub-regions 10 in the third control region SW3, Pgate4 represents a signal loaded on the fourth third trace 6 from the left, which is used for controlling the first signal end A1 of all the light-emitting sub-regions 10 in the fourth control region SW4, ch1…ch21 represent the signals loaded on the 21 first fourth traces 4 from left to right in turn. Figure 1

[0048] When the Vsy (Vsync) synchronization signal is received, low levels (low level effective) are output in turn, and the first signal ends A1 of the first control region SW1, the first signal ends A1 of the second control region SW2, the first signal ends A1 of the third control region SW3, and the first signal ends A1 of the fourth control region SW4 are sequentially loaded with signals; at the same time when the signals are loaded on the first signal ends A1 of each control region, ch1…ch21 are output at the same time; when the light-emitting substrate is full-load operated, each Pgate signal is in a full-time working state, at this time, the load is the largest, and at the same time, because ch1…ch21 are operated at the same time during the working period of each Pgate signal, it is equivalent to that all the driving signals are in a full-load state, at this time, a larger electromagnetic interference signal will interfere with the signals for controlling the brightness of each light-emitting sub-region, so that the signals are out of order and the display is abnormal.

[0049] Therefore, referring to Figure 5 and Figure 6 the disclosure provides a driving method of a light-emitting substrate, as shown in Figures 1-3A The driving method of the light-emitting substrate is as follows.

[0050] In step S100, a first signal is loaded on the first signal end of the control region; for example, the Pgate1 signal is loaded on the first signal end A1 of the first control region SW1.

[0051] In step S200, after the first signal is provided, a first time length is delayed, and a second signal is loaded on the second signal end of each light-emitting sub-region in the control region. Specifically, for example, after the Pgate1 signal is provided, a first time length D1 is delayed, and a second signal is loaded on the second signal end A2 of each light-emitting sub-region 10 in the first control region SW1, so that each light-emitting sub-region 10 in the first control region SW1 emits light.

[0052] ​In this embodiment of the present disclosure, the second signal loaded to the second signal terminal of the light-emitting partition in the control area is delayed for a first duration relative to the first signal loaded to the first signal terminal of the light-emitting partition in the control area, so that the second signal is staggered from the first signal. This improves the situation where the current change is relatively large and the load is large at the moment of startup of the light-emitting substrate, and the light-emitting substrate undergoes a large instantaneous load extraction, resulting in large instantaneous power consumption, large signal change and large interference, which causes errors in the brightness data of the light-emitting partition and abnormal lighting of the partition. For example, in a black screen display, some light-emitting partitions are abnormally lit due to data errors.

[0053] It should be noted that, Figures 1-3C The light-emitting substrate shown includes four control areas SW, each control area includes 28 rows * 3 columns of light-emitting partitions 10, and the connection method of each light-emitting partition 10 to the driving circuit 5 is only one schematic diagram provided by the embodiment of this disclosure. In specific implementation, the light-emitting substrate may also include other numbers of control areas SW, each control area SW may also include other numbers or arrangements of light-emitting partitions 10, each light-emitting partition 10 and the driving circuit 5 may also be connected in other ways, and each light-emitting partition 10 may also be multiple light-emitting elements connected in series. The embodiment of this disclosure does not limit this. For example, the driving circuit and the light-emitting substrate may also be connected through a multiplexer MUX.

[0054] In one possible implementation, step S200, loading a second signal onto the second signal terminal of each light-emitting partition in the control area, may include: sequentially loading a second signal onto the second signal terminal of each light-emitting partition in the control area, so that the second signals of adjacent light-emitting partitions are sequentially delayed. Specifically, for example, in conjunction with... Figure 1 , Figure 2 and Figure 6 As shown, towards Figure 1 The first line from the left, the fourth trace, is loaded with the ch1 signal and then delayed by the first relative duration D21. Figure 1 The second and fourth trace from the left in the middle is loaded with the ch2 signal; similarly, in the direction of... Figure 1 The second line from the left, the fourth line, loads the ch2 signal and delays it for the second relative duration D32, towards... Figure 1 The third and fourth traces from the left in the middle are loaded with the ch3 signal, and so on, until... Figure 1 The 21st trace from the left in the middle, the fourth trace 4, is loaded with the ch21 signal. In this embodiment of the present disclosure, the second signal is sequentially loaded onto the second signal terminal of each light-emitting zone in the control area. This can not only make the second signal staggered from the first signal, but also further stagger each second signal. This can further improve the problem of the light-emitting substrate experiencing a sudden large load drop, thereby improving the problem of the light-emitting substrate having incorrect brightness data of the light-emitting zone and abnormal lighting of the zone due to the simultaneous loading of multiple signals.

[0055] In one possible implementation, the second signal delay duration is equal for any adjacent light-emitting zones. For example, to Figure 1 The second and third trace from the left in the middle is loaded with the ch2 signal, relative to the direction. Figure 1 The first relative duration D21 of the fourth routing line from the left in the middle, which loads ch1, is related to the following: Figure 1 The third and fourth trace from the left in the middle is loaded with the ch3 signal, relative to the direction. Figure 6 The second relative delay D32 of the fourth trace 4 from the left in the middle is equal to that of ch2. In this embodiment, the delay duration of the second signal in any adjacent light-emitting partition is equal, and each second signal is easy to generate, which helps to simplify the device structure for generating the second signal.

[0056] In one possible implementation, sequentially loading a second signal to the second signal terminal of each light-emitting zone in the control area may include: during the activation period of the first signal, sequentially loading a second signal to the second signal terminal of each light-emitting zone in the control area. Specifically, for example, in conjunction with... Figure 7 As shown, during the activation period of the first signal Pgate1 applied to the first signal terminal of the first control area S1, the process of applying each second signal (ch1...ch21) to the second signal terminal of each light-emitting partition of the first control area S1 is completed. In this embodiment of the present disclosure, during the activation period of the first signal, the second signal is sequentially applied to the second signal terminal of each light-emitting partition in the control area to ensure that each light-emitting partition in the control area can emit light.

[0057] In one possible implementation, see Figure 1 As shown, sequentially loading a second signal to the second signal terminal of each light-emitting zone in the control area can also include simultaneously loading a second signal to the second signal terminal of each light-emitting zone in the control area. Specifically, for example, when loading... Figure 1 While the fourth trace from the left in the middle is loading the ch1 signal, it also sends... Figure 1 The second line from the left, the fourth line, is loaded with the ch2 signal, and simultaneously, to... Figure 6 The third trace from the left, the fourth trace 4, is loaded with the ch3 signal... Simultaneously, the 21st trace from the left, the fourth trace 4, is loaded with the ch21 signal. In this embodiment, by simultaneously loading the second signal to the second signal terminal of each light-emitting zone in the control area, the problem of incorrect brightness data and abnormal lighting of the light-emitting zone caused by the simultaneous loading of multiple signals on the light-emitting substrate can be improved by delaying each second signal relative to the first signal by a first time duration D1. At the same time, it can reduce the signal adjustment under the existing driving method, thereby reducing the improvement requirements of the driving circuit.

[0058] In a possible implementation, the loading of the first signal into the first signal end in the control area can include: after providing the synchronization signal, delaying for a second time length, and then loading the first signal into the first signal end in the control area. Specifically, referring to FIG. 2, after providing the synchronization signal Vsy, delaying for a second time length D2, and then loading the first signal Pgate1 into the first signal end in the first control area SW1. Figure 8

[0059] In a possible implementation, the loading of the first signal into the first signal end in the control area can include: loading the first signal into the first signal end in the control area at a driving frequency of 15 MHZ to 25 MHZ. In the related art, the signal is usually loaded into the first signal end in the control area at a driving frequency of 10 MHZ. Specifically, in the embodiment of the present disclosure, the signal can be loaded into the first signal end in the control area at a driving frequency of 20 MHZ, that is, the signal loaded into the first signal end in the control area is doubled compared with the related art. In this way, the influence of the delay on the backlight can be reduced. Specifically, referring to FIG. 2, Figure 8 Figure 6 In the embodiment shown in FIG. 2, the four signals above are the signals loaded into the first signal end in each control area before adjustment, and the four signals below are the signals loaded into the first signal end in each control area after adjustment. The four signals below are frequency-doubled relative to the four signals above. The signal loading period of the first signal end in each control area is T. The time length of the signal loaded into the first signal end in the fourth control area SW4 relative to the signal loaded into the first signal end in the first control area SW1 is reduced from 3 / 4T to 3 / 8T, and the overall delay of the light-emitting substrate will not increase too much.

[0060] In a possible implementation, the driving method can further include: determining, when the first signal of the first signal end in the current control area ends, providing a third signal to the first signal end in the next control area. Specifically, referring to FIG. 2, ​

[0061] Based on the same inventive concept, the present disclosure further provides a driving circuit, which includes:

[0062] The first module is configured to load a first signal into a first signal end in a control area.​​​

[0063] The second module is configured to load the second signal to the second signal end of each light-emitting sub-area in the control area after delaying for a first time duration after providing the first signal.

[0064] In a possible implementation, the first module is specifically configured to load the second signal to the second signal end of each light-emitting sub-area in the control area in sequence, so that the second signal of adjacent light-emitting sub-areas is delayed in sequence.

[0065] In a possible implementation, the first module is specifically configured to load the second signal to the second signal end of each light-emitting sub-area in the control area simultaneously.

[0066] In a possible implementation, the first module is specifically configured to load the first signal to the first signal end of the control area after delaying for a second time duration after providing the synchronization signal.

[0067] In a possible implementation, the first module is specifically configured to load the first signal to the first signal end of the control area at a driving frequency of 15 MHZ-25 MHZ.

[0068] In a possible implementation, the driving circuit further includes a third module, which is configured to provide a third signal to the light-emitting sub-area of the next control area when the first signal of the current control area ends.

[0069] Based on the same inventive concept, the embodiments of the present disclosure further provide a display device, which includes at least one driving circuit provided by the embodiments of the present disclosure, and further includes a light-emitting substrate, wherein the light-emitting substrate includes at least one control area, the at least one control area includes a plurality of light-emitting sub-areas, and each light-emitting sub-area includes a plurality of light-emitting elements connected in series and / or in parallel with each other; each light-emitting sub-area includes a first signal end and a second signal end, the first signal ends of all light-emitting sub-areas in the same control area are electrically connected with each other, and the second signal ends of different light-emitting sub-areas are independent of each other.

[0070] In a possible implementation, the driving circuit is an LED driver.

[0071] In the embodiments of the present disclosure, the second signal loaded to the second signal end of the light-emitting sub-area in the control area is delayed for a first time duration relative to the first signal loaded to the first signal end of the light-emitting sub-area in the control area, so that the second signal is staggered with the first signal, which improves the current change and the load at the starting moment of the light-emitting substrate, and the light-emitting substrate performs a large instantaneous load, thereby generating a large instantaneous power consumption and a large signal change, i.e., a large interference, which causes the light-emitting sub-area brightness data to be incorrect and the sub-area to be abnormally lit, for example, in a black picture display, some light-emitting sub-areas are abnormally lit due to data errors.

[0072] While the preferred embodiments of the application have been described, additional variations and modifications can be made to these embodiments by those skilled in the art once they have the benefit of the present disclosure without departing from the spirit and scope of the application. Accordingly, it is intended that the appended claims include all such modifications and variations as fall within the scope of the present application.

[0073] It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the application without departing from the spirit and scope of the application. It is therefore intended that the present application embrace all such changes and modifications as fall within the scope of the claims and their equivalents.

Claims

1. A driving method for a light-emitting substrate, wherein, The light-emitting substrate includes at least one control region, the at least one control region includes multiple light-emitting zones, and the at least one light-emitting zone includes multiple light-emitting elements connected in series and / or in parallel; each light-emitting zone includes a first signal terminal and a second signal terminal, and within the same control region, the first signal terminals of all light-emitting zones are electrically connected to each other, while the second signal terminals of different light-emitting zones are independent of each other; the driving method includes: A first signal is applied to the first signal terminal in the control area; After a first delay following the provision of the first signal, a second signal is applied to the second signal terminal of each of the light-emitting partitions in the control area.

2. The driving method as described in claim 1, wherein, The step of loading a second signal onto the second signal terminal of each of the light-emitting zones in the control area includes: A second signal is sequentially applied to the second signal terminal of each of the light-emitting zones in the control area, so that the second signals of adjacent light-emitting zones are sequentially delayed.

3. The driving method as described in claim 2, wherein, The second signal delay duration is equal for any adjacent light-emitting zones.

4. The driving method as described in claim 2 or 3, wherein, The step of sequentially loading a second signal onto the second signal terminal of each of the light-emitting zones in the control area includes: During the activation period of the first signal, the second signal is sequentially applied to the second signal terminal of each of the light-emitting partitions in the control area.

5. The driving method as described in claim 1, wherein, The step of sequentially loading a second signal onto the second signal terminal of each of the light-emitting zones in the control area includes: A second signal is simultaneously applied to the second signal terminal of each of the light-emitting zones in the control area.

6. The driving method according to any one of claims 1-3 and 5, wherein, The step of loading a first signal into the first signal terminal in the control area includes: After a second delay following the provision of the synchronization signal, the first signal is loaded into the first signal terminal in the control area.

7. The driving method as described in claim 6, wherein, The step of loading a first signal into the first signal terminal in the control area includes: The first signal is applied to the first signal terminal in the control area at a driving frequency of 15MHz to 25MHz.

8. The driving method as described in claim 7, wherein, The driving method further includes: When the first signal at the first signal terminal of the current control area ends, a third signal is provided to the first signal terminal of the next control area.

9. A driving circuit, wherein, The driving circuit is used to drive a light-emitting substrate, the light-emitting substrate including at least one control area, the at least one control area including multiple light-emitting zones, and the at least one light-emitting zone including multiple light-emitting elements connected in series and / or in parallel; each light-emitting zone includes a first signal terminal and a second signal terminal, in the same control area, the first signal terminals of all light-emitting zones are electrically connected to each other, and the second signal terminals of different light-emitting zones are independent of each other; the driving circuit includes: The first module is configured to load a first signal onto the first signal terminal in the control area; The second module is configured to, after providing the first signal, delay for a first duration and then load a second signal onto the second signal terminal of each of the light-emitting partitions in the control area.

10. The driving circuit as described in claim 9, wherein, The first module is specifically configured to sequentially load a second signal onto the second signal terminal of each of the light-emitting partitions in the control area, so that the second signals of adjacent light-emitting partitions are sequentially delayed.

11. The driving circuit as claimed in claim 9, wherein, The first module is specifically configured to simultaneously load a second signal onto the second signal terminal of each of the light-emitting partitions in the control area.

12. The driving circuit according to any one of claims 9-11, wherein, The first module is specifically configured to load the first signal into the first signal terminal in the control area after a second delay following the provision of the synchronization signal.

13. The driving circuit as described in claim 12, wherein, The first module is specifically configured to load the first signal into the first signal terminal in the control area at a driving frequency of 15MHz to 25MHz.

14. The driving circuit as described in claim 13, wherein, The driving circuit further includes a third module, which is configured to provide a third signal to the light-emitting partition of the next control area when the first signal of the current control area ends.

15. A display device, wherein, The device includes at least one driving circuit as described in any one of claims 9-14, and further includes a light-emitting substrate, wherein the light-emitting substrate includes at least one control region, the at least one control region includes a plurality of light-emitting partitions, the at least one light-emitting partition includes a plurality of light-emitting elements connected in series and / or in parallel; the light-emitting partition includes a first signal terminal and a second signal terminal, in the same control region, the first signal terminals of all the light-emitting partitions are electrically connected to each other, and the second signal terminals of different light-emitting partitions are independent of each other.

16. The display device as claimed in claim 15, wherein, The driving circuit is a light-emitting control chip.

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