CN117831455A

CN117831455A - Driving method of light-emitting substrate, light-emitting substrate and display device

Info

Publication number: CN117831455A
Application number: CN202311725369.4A
Authority: CN
Inventors: 路永全; 梅洪格; 张夺; 林荣镇; 严丞辉
Original assignee: Beijing Xianxin Technology Co ltd
Current assignee: Beijing Xianxin Technology Co ltd
Priority date: 2023-12-15
Filing date: 2023-12-15
Publication date: 2024-04-05

Abstract

The application discloses a driving method of a light-emitting substrate, the light-emitting substrate and a display device, which are used for improving voltage state feedback efficiency. The driving method provided by the embodiment of the application comprises the following steps: acquiring the voltage of the light-emitting area, and determining the voltage state of the light-emitting area according to the voltage of the light-emitting area; acquiring the minimum voltage state of the luminous area column according to the voltage state of at least part of luminous areas in the luminous area column; and determining a power supply voltage signal of each light emitting area column according to the minimum voltage state of each light emitting area column.

Description

Driving method of light-emitting substrate, light-emitting substrate and display device

Technical Field

The present disclosure relates to the field of display technologies, and in particular, to a driving method of a light emitting substrate, and a display device.

Background

Currently, display devices are evolving toward high contrast, high color gamut, high frame rate, and low power consumption. Especially, a display device using a Mini light emitting diode (Mini-LED) as a light source has great advantages in both high contrast and high color gamut directions.

In the prior art, a Mini-LED light-emitting substrate needs to determine the voltage state of a light-emitting area where the Mini-LED light-emitting substrate is located by using a driver, and feeds back the voltage state to a control chip, and after collecting the voltage states fed back by all the drivers, the power supply voltage is regulated. Because the data volume that each driver needs to transmit is great when carrying out data transmission, accomplish the feedback of the voltage state of all drivers and need several frames even tens of frames time to accomplish, influence the feedback efficiency of voltage state greatly.

Disclosure of Invention

The embodiment of the application provides a driving method of a light-emitting substrate, the light-emitting substrate and a display device, which are used for improving voltage state feedback efficiency.

The embodiment of the application provides a driving method of a light-emitting substrate, the light-emitting substrate includes: the light-emitting area array comprises n cascaded light-emitting areas, wherein n is an integer greater than 1; the light emitting region includes: a driver, the driver comprising: an address port; the method comprises the following steps:

acquiring the voltage of the light-emitting area, and determining the voltage state of the light-emitting area according to the voltage of the light-emitting area; the voltage state is divided into m-level states, the m-level states are respectively from a 1 st state to an m-th state, the voltage corresponding to the i-th state is smaller than the voltage corresponding to the i+1-th state, m is a positive integer greater than 1, and i is a positive integer smaller than m;

acquiring the minimum voltage state of the luminous area column according to the voltage state of at least part of luminous areas in the luminous area column;

and determining a power supply voltage signal of each light emitting area column according to the minimum voltage state of each light emitting area column.

In some embodiments, the method for obtaining the minimum voltage state of the light-emitting area column according to the voltage state of at least part of the light-emitting areas in the light-emitting area column specifically includes:

The method for obtaining the voltage state output by the luminous area column according to the voltage state of at least part of luminous areas in the luminous area column comprises the following steps: if the voltage state of one of the light-emitting areas in the light-emitting area row is the 1 st state, acquiring the 1 st state as the voltage state output by the light-emitting area row; if the voltage states of the luminous areas in the luminous area column do not comprise the 1 st state, acquiring the voltage state with the minimum voltage in the voltage states of at least part of the luminous areas as the voltage state output by the luminous area column;

and determining the minimum voltage state of the light emitting area column according to the voltage state output by the light emitting area column.

In some embodiments, before acquiring the voltage of the light emitting region, further comprising:

sequentially sending voltage state acquisition signals to n cascaded light-emitting areas in each light-emitting area column;

the method for obtaining the voltage of the light-emitting area and determining the voltage state of the light-emitting area according to the voltage of the light-emitting area specifically comprises the following steps:

responding to the voltage state acquisition signal, detecting the voltage of the light-emitting area to acquire the voltage of the light-emitting area, and determining the voltage state of the light-emitting area according to the detected voltage;

if the voltage state of one of the light emitting areas in the light emitting area row is the 1 st state, the 1 st state is obtained as the voltage state output by the light emitting area row, which specifically comprises:

Acquiring the first determined 1 st state in the n cascaded light-emitting areas as the voltage state output by the light-emitting area column;

the method for determining the minimum voltage state of the light emitting area column according to the voltage state output by the light emitting area column specifically comprises the following steps:

the 1 st state is taken as the minimum voltage state of the light emitting area column.

In some embodiments, the n light emitting regions included in the light emitting region column are divided into k light emitting region groups, k < n, k being a positive integer; if the voltage states of the light emitting areas in the light emitting area column do not include the 1 st state, acquiring a voltage state with the minimum voltage among the voltage states of at least part of the light emitting areas as the voltage state output by the light emitting area column, wherein the method specifically comprises the following steps:

according to the voltage state of the luminous area in the luminous area group, taking the voltage state with the minimum voltage as the voltage state of the luminous area group output;

sequentially outputting the voltage states output by the k luminous area groups as the voltage states output by the luminous area columns;

and taking the voltage state with the smallest voltage among the voltage states output by the k luminous area groups as the smallest voltage state of the luminous area column.

In some embodiments, the light emitting substrate further comprises: a control module electrically connected with the light emitting region;

The address port includes: a first address port and a second address port;

the first address port is used for inputting signals sent by the control module, and the second address port is used for outputting signals sent by the control module; or the first address port is used for outputting a signal transmitted to the control module, and the second address port is used for outputting a signal transmitted to the control module;

the first address port is used for inputting a voltage state acquisition signal, and the second address port is used for outputting the voltage state acquisition signal;

the first address port is also used for outputting a voltage state, and the second address port is also used for inputting a voltage state;

according to the voltage state of the luminous area in the luminous area group, taking the voltage state with the minimum voltage as the voltage state of the luminous area group output, specifically comprising:

sequentially sending back read signals to n cascaded luminous areas in the luminous area column;

responding to the readback signal, determining the 1 st-level luminous area to the last 1-level luminous area of the luminous area group according to a preset readback sequence, comparing the voltage states of the 1 st-level luminous area to the last 1-level luminous area in the luminous area group step by step according to the preset readback sequence, and taking the voltage state with the minimum voltage as the voltage state of the luminous area group output.

In some embodiments, according to a preset read-back sequence, comparing the voltage state of the 1 st-stage light-emitting area to the voltage state of the last 1 st-stage light-emitting area in the light-emitting area group step by step, and taking the voltage state with the minimum voltage as the voltage state of the output of the light-emitting area group specifically includes:

sequentially obtaining the voltage states output by all the light-emitting areas in the light-emitting area group according to a preset readback sequence, and specifically comprising the following steps: taking the voltage state of the 1 st-stage light-emitting area as the output voltage state; comparing the voltage state of the jth light-emitting area with the voltage state output by the last light-emitting area with the preset readback sequence in the light-emitting area group, and taking the voltage state with the minimum voltage as the voltage state output by the jth light-emitting area; wherein j is an integer greater than 1 and less than or equal to p, p is the number of light-emitting areas included in the light-emitting area group, and p is a positive integer less than n;

and acquiring the voltage state output by the light-emitting area of the last stage in the preset readback sequence as the voltage state output by the light-emitting area group.

In some embodiments, m=3, and determining the voltage state of the light emitting region according to the voltage of the light emitting region specifically includes:

Comparing the voltage of the light-emitting area with a preset voltage range;

if the voltage of the light-emitting area is smaller than the minimum value of the preset voltage range, determining the voltage state of the light-emitting area to be the 1 st state;

if the voltage of the light-emitting area is larger than or equal to the minimum value of the preset voltage range and smaller than or equal to the maximum value of the preset voltage range, determining the voltage state of the light-emitting area to be the 2 nd state;

if the voltage of the light-emitting area is larger than the maximum value of the preset voltage range, determining the voltage state of the light-emitting area to be the 3 rd state;

the driver further comprises at least one output port, and the output port is electrically connected with the light-emitting unit; the step of obtaining the voltage of each light-emitting area specifically comprises the following steps:

the minimum voltage of the output port of each light emitting region is obtained.

The embodiment of the application provides a luminescent substrate, luminescent substrate includes: the light-emitting device comprises a plurality of light-emitting area columns and a driving module, wherein the light-emitting area columns comprise n cascaded light-emitting areas, and n is an integer greater than 1; the light emitting region includes: a driver; the driver includes: an address port;

the driver includes:

the voltage state determining module is used for obtaining the voltage of the light-emitting area and determining the voltage state of the light-emitting area according to the voltage of the light-emitting area; the voltage state is divided into m-level states, the m-level states are respectively from a 1 st state to an m-th state, the voltage corresponding to the i-th state is smaller than the voltage corresponding to the i+1-th state, m is a positive integer greater than 1, and i is a positive integer smaller than m;

The driver and the driving module of the cascaded n light emitting areas are used for: acquiring the minimum voltage state of the luminous area column according to the voltage state of at least part of luminous areas in the luminous area column; and determining a power supply voltage signal of each light emitting area column according to the minimum voltage state of each light emitting area column.

In some embodiments, the driver of the cascaded n light emitting regions is specifically configured to:

transmitting the voltage state output by the luminous area column to the driving module according to the voltage state of at least part of luminous areas in the luminous area column; the method is particularly used for: if the voltage state of one of the light-emitting areas in the light-emitting area array is the 1 st state, the 1 st state is sent to the driving module; if the voltage states of the luminous areas in the luminous area column do not include the 1 st state, sending a voltage state with the minimum voltage in the voltage states of at least part of the luminous areas to the driving module;

the driving module is specifically used for: and receiving the voltage state output by the light-emitting area columns, determining the minimum voltage state of the light-emitting area columns according to the voltage state output by the light-emitting area columns, and determining the power supply voltage signal of each light-emitting area column according to the voltage state of each light-emitting area column.

In some embodiments, the drive module is further to: transmitting a voltage state acquisition signal to each light emitting area column;

The driver of the cascaded n light emitting regions is also used for: sequentially receiving voltage state acquisition signals;

the voltage state determination module is further configured to: responding to a voltage state acquisition signal, detecting the voltage of a light-emitting area corresponding to a driver to acquire the voltage of the light-emitting area, and determining the voltage state of the light-emitting area according to the detected voltage;

the driver of the cascaded n light emitting regions is specifically for: the first determined 1 st state in the n cascaded luminous areas is sent to a driving module;

the driving module is used for determining the voltage state of the light emitting area column according to the voltage state output by the light emitting area column, and specifically comprises the following steps: the 1 st state is taken as the minimum voltage state of the light emitting area column.

In some embodiments, the n light emitting regions included in the light emitting region column are divided into k light emitting region groups, k < n, k being a positive integer;

the light emitting area group comprises drivers specifically for: according to the voltage state of the luminous area in the luminous area group, taking the voltage state with the minimum voltage as the voltage state output by the luminous area group, and sending the voltage state output by the luminous area group to the driving module;

the driver of the cascaded n light emitting regions is specifically for: sequentially sending the voltage states output by the k luminous area groups to the driving module as the voltage states output by the luminous area columns;

The driving module is specifically used for: and sequentially receiving the voltage states output by the k luminous area groups, and taking the voltage state with the smallest voltage among the voltage states output by the k luminous area groups as the smallest voltage state of the luminous area column.

In some embodiments, the drive module is further to: sending a readback signal to the luminous area column, and determining the 1 st luminous area to the last 1 st luminous area of the luminous area group according to a preset readback sequence;

the driver also includes a comparison module;

the comparison module included in the luminous area group is specifically used for:

and comparing the voltage state of the 1 st-stage luminous area in the luminous area group to the voltage state of the last 1-stage luminous area according to a preset readback sequence step by step, and taking the voltage state with the minimum voltage as the voltage state of the luminous area group output.

In some embodiments, the address port comprises: a first address port and a second address port;

The first address port is also used for outputting a voltage state and the second address port is also used for inputting a voltage state.

In some embodiments, according to a preset read-back sequence, the comparison module of the 1 st stage light emitting area in the light emitting area group is specifically configured to: taking the voltage state of the 1 st stage luminous area as the output voltage state, and sending the output voltage state to the next stage luminous area;

according to a preset readback sequence, the comparison module of the j-th light-emitting area in the light-emitting area group is specifically used for: comparing the voltage state of the j-th stage light-emitting area with the voltage state output by the upper stage light-emitting area in a preset readback sequence, taking the voltage state with the minimum voltage as the voltage state output by the j-th stage light-emitting area, and transmitting the output voltage state to the lower stage light-emitting area; wherein j is an integer greater than 1 and less than or equal to p, p is the number of the light-emitting areas included in the light-emitting area group, and p is a positive integer less than n;

the driving module is specifically used for: and receiving the voltage state output by the light-emitting area of the last stage in the preset readback sequence, and taking the voltage state output by the light-emitting area of the last stage in the preset readback sequence as the voltage state output by the light-emitting area group.

In some embodiments, m=3, and the voltage state determination module is specifically configured to:

comparing the voltage of the light-emitting area with a preset voltage range;

if the voltage of the light-emitting area is larger than the maximum value of the preset voltage range, determining the voltage state of the light-emitting area to be the 3 rd state.

In some embodiments, the driver further comprises an output port, the voltage state determination module being specifically configured to: the minimum voltage of the output port is obtained.

The embodiment of the application provides a display device, the display device includes: the embodiment of the application provides a light-emitting substrate and a display panel positioned on the light-emitting side of the light-emitting substrate.

According to the driving method of the light-emitting substrate, the light-emitting substrate and the display device, the cascade driver is used for determining the self voltage state of the light-emitting area according to the voltage of the light-emitting area, determining the minimum voltage state of the light-emitting area according to the self voltage state of at least part of the light-emitting areas in the light-emitting area row, and subsequently adjusting the voltage of the light-emitting area row according to the minimum voltage state of the light-emitting area row, so that the voltage state transmission and processing time can be saved, and the voltage state transmission rate can be improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a light-emitting substrate according to an embodiment of the present disclosure;

fig. 2 is a schematic flow chart of a driving method of a light emitting substrate according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a driver of a light emitting substrate according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of another light-emitting substrate according to an embodiment of the present disclosure;

fig. 5 is a schematic diagram of acquiring a voltage state of a light emitting area column output according to an embodiment of the present application;

FIG. 6 is a schematic diagram of another embodiment of obtaining a voltage state of a light emitting area column output;

fig. 7 is a schematic structural diagram of a driver of another light emitting substrate according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present application. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present application. And embodiments and features of embodiments in this application may be combined with each other without conflict. All other embodiments, which can be made by one of ordinary skill in the art without the benefit of the present disclosure, are intended to be within the scope of the present application based on the described embodiments.

Unless otherwise defined, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

It should be noted that the dimensions and shapes of the various figures in the drawings do not reflect true proportions, and are intended to illustrate the present application only. And the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

The embodiment of the application provides a driving method of a light-emitting substrate, as shown in fig. 1, the light-emitting substrate includes: a plurality of light emitting region columns 1, the light emitting region columns 1 including n light emitting regions 101 in cascade, wherein n is an integer greater than 1; the light emitting region includes: a driver IC, the driver IC comprising: an address port (not shown); as shown in fig. 2, the driving includes:

S101, acquiring the voltage of a light-emitting area, and determining the voltage state of the light-emitting area according to the voltage of the light-emitting area; the voltage state is divided into m-level states, the m-level states are respectively from a 1 st state to an m-th state, the voltage corresponding to the i-th state is smaller than the voltage corresponding to the i+1-th state, m is a positive integer greater than 1, and i is a positive integer smaller than m;

s102, acquiring the minimum voltage state of a luminous area column according to the voltage state of at least part of luminous areas in the luminous area column;

s103, determining a power supply voltage signal of each light emitting area column according to the minimum voltage state of each light emitting area column.

According to the driving method of the light-emitting substrate, through the cascaded drivers, the self voltage state of the light-emitting area is determined according to the voltage of the light-emitting area, the minimum voltage state of the light-emitting area row is determined according to the voltage state of at least part of the light-emitting area in the light-emitting area row, the voltage of the light-emitting area row can be regulated according to the minimum voltage state of the light-emitting area row, the voltage state transmission and processing time can be saved, and the voltage state transmission rate can be improved.

For the sake of facilitating understanding of the present application, first, the purpose of acquiring the voltage state of the light-emitting region array will be briefly described in connection with each portion included in the light-emitting substrate.

In some embodiments, as shown in fig. 1, the light emitting region 101 includes a driver IC and a light emitting unit 1011; in a specific implementation, one light emitting region may include at least one light emitting unit. Fig. 1 illustrates an example in which the light emitting region 101 includes 4 light emitting units.

In some embodiments, the light emitting unit includes at least one light emitting device. In practice, the light-emitting device comprises, for example, an anode, a light-emitting layer and a cathode with a region of stacked arrangement therebetween. In some embodiments, as shown in fig. 1, the light emitting substrate further includes: a driving module 2 and a plurality of power lines 6, the driving module 2 comprising: the control module 201, and the power module 202 that is electrically connected with both the control module 201 and the light emitting region 101, the power module 202 is electrically connected with the light emitting region 101 through the power line 6. The control module is used for receiving the voltage state of the luminous area columns. The power supply module is electrically connected with the anode of at least one light emitting device of each light emitting unit through a power line, and provides a power supply voltage signal for the light emitting device; an output port of the driver IC is electrically connected to a cathode of at least one light emitting device included in one light emitting unit to supply a driving signal to the light emitting unit.

In the embodiment, as shown in fig. 1, the light emitting area rows 1 are arranged along a first direction X, the light emitting area rows 1 extend along a second direction Y, the first direction X intersects the second direction Y, and in fig. 1, the first direction X is illustrated as being perpendicular to the second direction Y; the light-emitting substrate further comprises a plurality of wires 3; the driver ICs in a row 1 of light emitting areas are electrically connected to the control module 201 via the wiring 3; the control module 201 obtains the voltage state of the light emitting area column 1 through the wiring 3.

In the implementation, as shown in fig. 3, the driver IC further includes: a power supply port V1, and a ground port GND. The power supply port is used for receiving the working voltage and generating a driving signal to control the working state of the corresponding light-emitting unit. The ground port is for receiving a common voltage signal. The address ports include, for example, a first address port DI for receiving an address signal for gating a driver of a corresponding address, and a second address port DO for outputting a relay signal to supply an address signal to the first address port DI of a next driver electrically connected to the second address port DO; in a specific implementation, the address port is further used for receiving a signal sent by the control module and transmitted through the wire, or is further used for transmitting a signal to the control module through the wire, that is, the actions of the first address port DI and the second address port DO can be mutually converted, for example, in the feedback voltage state, the second address port DO is used for inputting the voltage state of the previous stage, and the first address port DI is used for outputting the voltage state; the plurality of traces includes: a plurality of cascading wires and a plurality of first wires; the cascade line is connected with a second address port DO and a first address port DI in the two cascaded drivers, and the first wiring is connected with the control module and the first address port DI of the drivers. The control module obtains the voltage state of the luminous area column through the first wiring. In fig. 3, the driver IC includes 4 output ports OUT0, OUT1, OUT2, OUT3 as an example. In fig. 3, only one kind of driver IC is illustrated, which includes the positions of the output port OUT, the ground port GND, and the address ports DI, DO.

However, there is a voltage drop in the power line along the second direction Y and along the direction away from the control module, which may cause a fluctuation in the voltage of the anode of the light emitting device, and thus a fluctuation in the voltage of the cathode of the light emitting device and the voltage of the output port of the driver. The driver can work normally when the voltage of the output port of the driver is in a preset voltage range, so that when the voltage fluctuation of the output port of the driver is large, for example, when the voltage of the output port is not in the preset voltage range, the driver cannot work normally or power consumption is large. The minimum voltage state of the light emitting area column represents the voltage of the output port of the driver of the light emitting area column, so that the minimum voltage state of the light emitting area column can reflect the anode voltage fluctuation condition of the light emitting device of the light emitting area column, and the power supply voltage provided by the power supply module can be regulated according to the minimum voltage state of the light emitting area column, so that the voltage of the output port of the driver of the light emitting area column is in a preset voltage range to work normally.

In other words, according to the driving method of the light-emitting substrate provided by the embodiment of the application, the power supply voltage signal of each light-emitting area column is adjusted through the determined minimum voltage state of each light-emitting area column, and the voltage of the output port of the driver is adjusted through adjusting the power supply voltage signal, so that the influence on the normal operation of the driver due to the fact that the voltage of the anode of the light-emitting device fluctuates due to the fact that the voltage of the power supply wire drops is avoided. And only the minimum voltage state is needed to be used as the voltage state feedback of the luminous area column through the cascaded drivers so as to adjust the power supply voltage. That is, the embodiment of the application does not need to feed back the voltage states of n light-emitting areas in one light-emitting area row to the control module step by step, and the control module calculates the voltage states of the light-emitting areas, so that the number of data acquired by the control module can be reduced, the response time for acquiring the data can be further reduced, and the power consumption of the light-emitting substrate is reduced. In addition, the acquired data quantity is reduced, namely the data quantity required to be stored by the control module is reduced, so that the waste of storage space can be avoided, and the difficulty in processing the voltage state by the control module can be reduced.

According to the driving method of the light-emitting substrate, through the cascade driver, the self voltage state of the light-emitting area is determined according to the voltage of the light-emitting area, the voltage state of the light-emitting area row is determined according to the voltage state of at least part of the light-emitting area in the light-emitting area row, only the 1 st state or the voltage state with the minimum voltage in the voltage state of at least part of the light-emitting area in the light-emitting area row is obtained and used as the voltage state output by the light-emitting area row, the minimum voltage state of the light-emitting area row is determined according to the voltage state output by the light-emitting area row, the voltage of the light-emitting area row can be regulated according to the minimum voltage state of the light-emitting area row, the voltage state transmission and processing time can be saved, and the voltage state transmission rate can be improved.

and responding to the voltage state acquisition signal, detecting the voltage of the light-emitting area to acquire the voltage of the light-emitting area, and determining the voltage state of the light-emitting area according to the detected voltage.

In some embodiments, obtaining the voltage of each light emitting region specifically includes:

the voltage of the output port of each light-emitting area is obtained.

In a specific implementation, if the driver includes a plurality of output ports, the step of obtaining the voltage of the output port of each light emitting region includes:

the minimum voltage of a plurality of output ports of each light emitting area is obtained.

Taking fig. 3 as an example, for each light emitting region, the voltage of each output port OUT0, OUT1, OUT2, OUT3 is obtained, and then the minimum voltage is extracted from the voltage of each output port OUT0, OUT1, OUT2, OUT 3.

In specific implementation, the control module sends a voltage state acquisition signal to a driver of the light emitting area, and an address port of the driver receives the voltage state acquisition signal; the driver acquires a minimum voltage of the plurality of output ports in response to the voltage state acquisition signal.

comparing the voltage of the light-emitting area with a preset voltage range;

In a specific implementation, the 1 st state is a low-voltage state, the 2 nd state is a medium-voltage state, and the 3 rd state is a high-voltage state. When the light emitting state is the 1 st state, i.e. the low voltage state, the driver cannot work normally, and the power supply voltage needs to be increased. When the light emitting state is the 2 nd state, namely the medium voltage state, the driver works normally without adjustment. When the light emitting state is the 3 rd state, i.e., the high voltage state, the power consumption is large, and the power supply voltage can be reduced to reduce the power consumption. That is, if it is prioritized whether the driver is operating normally, the power supply voltage needs to be adjusted as long as the 1 st state, i.e., the low voltage state, exists in the light emitting region voltage state in the light emitting region column, without considering the voltage states of other light emitting regions.

In the implementation, the 1 st state corresponds to the first level signal, the 2 nd state corresponds to the second level signal, the 3 rd state corresponds to the third level signal, and the voltage of the first level signal is smaller than that of the second level signal; when the first voltage state is the 1 st state, the first voltage state is the first level signal, when the first voltage state is the 2 nd state, the first voltage state is the second level signal, and when the first voltage state is the 3 rd state, the first voltage state is the third level signal. In the implementation, the voltages of signals corresponding to m stages of different states can be set according to actual needs.

In the implementation, for a light emitting area row, when the voltage state of a certain light emitting area is the 1 st state, the voltage state of the light emitting area row is a first level signal corresponding to the 1 st state; for the light-emitting area row, when the voltage states of all the light-emitting areas are not the 1 st state, if the 3 rd state is the state with the lowest voltage in the n light-emitting areas, the voltage state of the light-emitting area row is the third level signal corresponding to the 3 rd state; if the 2 nd state is the state with the lowest voltage in the n light emitting areas, the voltage state of the light emitting area row is the second level signal corresponding to the 2 nd state.

It should be noted that, in the implementation, the maximum value and the minimum value of the preset voltage range may be set to be equal, the preset voltage range is the preset value, when the voltage of the light emitting area is greater than the preset value, the first voltage state is the 3 rd state, when the voltage of the light emitting area is equal to the preset value, the first voltage state is the 2 nd state, and when the voltage of the light emitting area is less than the preset value, the first voltage state is the 1 st state.

In some embodiments, the first address port is used for inputting signals sent by the control module, and the second address port is used for outputting signals sent by the control module; or the first address port is used for outputting a signal transmitted to the control module, and the second address port is used for outputting a signal transmitted to the control module; i.e. the functions of the first address port and the second address port may be interchanged;

In some embodiments, if the voltage state of one of the light emitting regions in the light emitting region row is the 1 st state, the 1 st state is obtained as the voltage state output by the light emitting region row, which specifically includes:

Specifically, when the driver of a certain light-emitting area responds to the voltage state acquisition signal, determining that the voltage state of the light-emitting area is the 1 st state, wherein the 1 st state of the light-emitting area is the 1 st state determined first, and transmitting the 1 st state back to the control module through the address port of the cascaded driver to be used as the minimum voltage state of the light-emitting area row where the light-emitting area is located. The voltage states of the rest light-emitting areas do not need to be transmitted back to the control module.

According to the driving method of the light-emitting substrate, when the voltage state of the light-emitting area in the light-emitting area array is the 1 st state, namely the low voltage state, and the 1 st state of the light-emitting area is the 1 st state which is determined first, the 1 st state is obtained and is used as the minimum voltage state feedback of the light-emitting area array to regulate the power supply voltage, the voltage states of other light-emitting areas of the light-emitting area array are not required to be obtained, the number of data obtained by the control module can be reduced, and the feedback efficiency of the voltage states can be improved.

In some embodiments, as shown in fig. 1 and 4, n light emitting areas included in the light emitting area column 1 are divided into k light emitting area groups 1-1, k < n, k is a positive integer;

if the voltage states of the light emitting areas in the light emitting area column do not include the 1 st state, acquiring a voltage state with the minimum voltage among the voltage states of at least part of the light emitting areas as the voltage state output by the light emitting area column, wherein the method specifically comprises the following steps:

the method for determining the voltage state of the light emitting area column according to the voltage state output by the light emitting area column specifically comprises the following steps:

and taking the voltage state with the smallest voltage among the voltage states output by the k luminous area groups as the voltage state of the luminous area column.

In the embodiment, k may be equal to 1, and in fig. 1, k=1 is taken as an example for illustration, that is, one light emitting area column 1 is one light emitting area group 7. The voltage state output by the light emitting area group 7 is transmitted back to the control module 201, and the control module 201 uses the voltage state with the minimum voltage in the voltage state output by the light emitting area group 7 as the voltage state of the light emitting area column 1.

Alternatively, in the embodiment, k may be greater than 1 as shown in fig. 4, where k=2 is illustrated in fig. 4, and one light emitting region column 1 includes two light emitting region groups 7, and the two light emitting region groups 7 are the first light emitting region group 701 and the second light emitting region group 702, respectively. In the implementation, when k is greater than 1, the voltage state output by the k light emitting area groups is obtained, which specifically includes: and sequentially acquiring the voltage states output by the k luminous area groups according to the sequence from the control module to the control module. Taking fig. 4 as an example, the voltage states output by the light-emitting groups are sequentially obtained, which specifically includes that the voltage state output by the first light-emitting group is obtained first, and then the voltage state output by the second light-emitting group is obtained.

In fig. 4, n/k is taken as a positive integer as an example, that is, the number of light emitting regions included in each light emitting region group included in the light emitting region column is the same. Of course, in the implementation, the number of light emitting areas included in different light emitting area groups may not be identical. For example, the light emitting region column includes 7 light emitting regions, k=2, and one light emitting region group includes 4 light emitting regions, and the other light emitting region group includes 3 light emitting regions; alternatively, the light emitting region column includes 10 light emitting regions, k=3, and the number of light emitting regions included in the 3 light emitting region groups is 4, 3, and 3, respectively. In specific implementation, the number of light emitting area groups and the number of light emitting areas included in the light emitting area groups can be specifically selected according to the number of total light emitting areas included in the light emitting area columns.

Of course, in the implementation, the voltage states of the outputs of the k light emitting area groups may be acquired sequentially from the control module to the control module.

In the implementation, when k is greater than 1, the k luminous area groups transmit the output voltage states back to the control module in sequence, the control module compares the voltage of the voltage states output by the k luminous area groups, and the voltage state with the minimum voltage in the voltage states output by the k luminous area groups is used as the minimum voltage state of the luminous area column.

According to the driving method of the light-emitting substrate, when the voltage states of the light-emitting areas in the light-emitting area columns are not the 1 st state, the voltage states of the k light-emitting area groups are obtained. That is, for a row of light emitting areas, only k voltage states need to be fed back to the control module, and the voltage states of n light emitting areas in a row of light emitting areas do not need to be fed back to the control module step by step, and then the voltage states of the light emitting areas are calculated by the control module, so that the number of data acquired by the control module can be reduced, the response time for acquiring the data can be reduced, and the power consumption of the light emitting substrate can be reduced. In addition, the acquired data quantity is reduced, namely the data quantity required to be stored by the control module is reduced, so that the waste of storage space can be avoided, and the difficulty in processing the voltage state by the control module can be reduced.

In some embodiments, according to the voltage state of the light emitting area in the light emitting area group, taking the voltage state with the minimum voltage as the voltage state of the light emitting area group output specifically includes:

responding to the readback signal, determining the 1 st-level luminous area to the last 1-level luminous area of the luminous area group according to a preset readback sequence, comparing the voltage state of the 1 st-level luminous area to the voltage state of the last 1-level luminous area in the luminous area group step by step according to the preset readback sequence, and taking the voltage state with the minimum voltage as the voltage state of the luminous area group output.

According to the driving method of the light-emitting substrate, when the voltage states of the light-emitting areas in the light-emitting area array are not the 1 st state, the voltage states of the n light-emitting areas in cascade connection of each light-emitting area array can be compared step by step through the cascade driver, only the voltage signal with the lowest voltage is needed to be used as the voltage state feedback of the light-emitting area array, and for one light-emitting area array, only k voltage states are needed to be fed back to the control module to adjust the power supply voltage. That is, the embodiment of the application does not need to feed back the voltage states of the n light-emitting areas to the control module step by step, and the control module calculates the voltage states of the light-emitting areas, so that the number of data acquired by the control module can be reduced, the response time for acquiring the data can be further reduced, and the power consumption of the light-emitting substrate is reduced. In addition, the acquired data quantity is reduced, namely the data quantity required to be stored by the control module is reduced, so that the waste of storage space can be avoided, and the difficulty in processing the voltage state by the control module can be reduced.

In an implementation, the first address port is further used for inputting a read-back signal, and the second address port is further used for outputting the read-back signal.

It should be noted that, in the implementation, the driver has a function of delaying data transmission, that is, if the voltage state of the light emitting area is not the 1 st state, the driver is in a waiting state and cannot return the voltage state of the light emitting area corresponding to the driver; when the corresponding luminous area of the driver is the luminous area of the luminous area group to be acquired, the driver receives a readback signal or the voltage state output by the upper driver is returned, and then the voltage state or the voltage state of the driver is compared with the voltage state output by the upper driver and then the voltage state is returned; when the corresponding luminous area of the driver is not the luminous area of the luminous area group which needs to be acquired, the driver does not need to compare the voltage state of the driver with the voltage state of the upper driver when receiving the voltage state of the upper driver feedback output, but directly returns the voltage state of the upper driver feedback output as the output voltage state.

In some embodiments, according to a preset read-back sequence, comparing the voltage state of the 1 st-stage light-emitting area to the voltage state of the last 1-stage light-emitting area in the light-emitting area group step by step, and taking the voltage state with the minimum voltage as the voltage state of the light-emitting area group output specifically includes:

In some embodiments, the number of light emitting regions included in each light emitting region group included in the light emitting region column is the same, p=n/k.

It should be noted that, comparing the voltage state of the jth light emitting region with the voltage state output by the jth-1 light emitting region, that is, comparing the voltage of the jth light emitting region with the voltage of the jth-1 light emitting region, three situations may occur: 1. the voltage of the voltage state of the jth light-emitting area is the same as the voltage of the voltage state output by the jth-1 light-emitting area, and the voltage of the jth light-emitting area are the voltage state with the minimum voltage; 2. the voltage of the voltage state of the jth light-emitting area is larger than the voltage of the voltage state output by the jth-1 light-emitting area, the voltage state output by the jth-1 light-emitting area is the voltage state with the minimum voltage in the jth light-emitting area, and the voltage state output by the jth light-emitting area is the voltage state output by the jth-1 light-emitting area; 3. the voltage state of the jth light-emitting area is smaller than the voltage state of the jth-1 light-emitting area, namely the voltage state of the jth light-emitting area is the voltage state with the minimum voltage in the jth light-emitting area, and the voltage state of the jth light-emitting area is the voltage state of the jth light-emitting area.

In some embodiments, the preset read-back sequence is the sequence from the control module to the control module, that is, in the preset read-back sequence, the first-stage light emitting area is the light emitting area farthest from the control module in the light emitting area group, and the last-stage light emitting area is the light emitting area closest to the control module in the light emitting area group.

Or, in some embodiments, the preset read-back sequence is the sequence from the close to the control module to the far away from the control module, that is, in the preset read-back sequence, the first-stage light-emitting area is the light-emitting area closest to the control module in the light-emitting area group, and the last-stage light-emitting area is the light-emitting area farthest from the control module in the light-emitting area group, but the voltage state output by the last-stage light-emitting area needs to be returned through the rest light-emitting areas of the light-emitting area group.

In some embodiments, a frame period of data transmission is divided into a first period and a second period after the first period; the driving method of the light emitting substrate further includes:

acquiring the voltage of each light-emitting area in a first period;

the voltage state of the light emitting region column output is determined and transmitted in the second period.

In some embodiments, if the voltage state of the light emitting region in the light emitting region column includes the 1 st state, determining and transmitting the voltage state of the light emitting region column output in the second period specifically includes:

Transmitting the 1 st state during a second period;

if the voltage states of the light emitting areas in the light emitting area array do not include the 1 st state, determining and transmitting the voltage state output by the light emitting area array in the second period specifically includes:

the voltage state of the light emitting area group output is determined and transmitted in the second period.

In other words, in the embodiment of the application, the voltage state of each light emitting area column needs to be determined at most by k frames, and compared with the voltage state of each light emitting area column needs to be determined by n frames in the prior art, the time for acquiring data can be shortened, and the efficiency for acquiring the voltage state can be improved.

In practice, the value of k may be determined based on a particular value of n, i.e., the actual number of light emitting regions in the light emitting region column. When the number of the light emitting areas in the light emitting area row is smaller, that is, n is smaller, k=1 can be set to reduce the voltage state feedback number to the maximum extent, and the step-by-step comparison of the voltage states of the light emitting areas does not occupy too much time due to the smaller number of the light emitting areas, so that the feedback of the voltage state of the light emitting area row can be completed within 1 frame time. When the number of light emitting areas in a light emitting area column is larger, namely n is larger, k=1 can cause time for voltage step-by-step comparison to be increased, and k is set to be larger than 1, the output voltage state of k light emitting area groups in one light emitting area column is obtained through k frames, so that the time of occupying each frame by excessive data volume can be avoided.

Next, taking one light emitting region row as an example, a flow of acquiring a minimum voltage state of the light emitting region row is illustrated.

In some embodiments, for a light emitting region column, obtaining the minimum voltage state of the light emitting region column specifically includes:

sequentially sending voltage state acquisition signals to n cascaded light-emitting areas in the light-emitting area column;

the n cascaded luminous areas in the luminous area array sequentially respond to the voltage state acquisition signals, the minimum voltage of the output port is compared with a preset voltage range, and the voltage state of the luminous area is determined;

if one light emitting area in the light emitting area array responds to the voltage state acquisition signal, determining that the voltage state of the light emitting area is the 1 st state, and the 1 st state of the light emitting area is the 1 st state determined first, and then transmitting the 1 st state back to the control module through an address port of a cascaded driver to be used as the minimum voltage state of the light emitting area array where the light emitting area is located;

if the voltage state of the luminous area determined by the luminous area in the luminous area array is not the 1 st state, sequentially sending back read signals to n luminous areas cascaded in the luminous area array;

responding to the readback signal, outputting the voltage state of the 1 st stage luminous area of the luminous area group as the voltage state output by the luminous area according to the preset readback sequence, sequentially comparing the voltage states of the rest luminous areas of the luminous area group with the voltage state output by the last stage luminous area to output the voltage state with the minimum voltage, and transmitting the voltage state output by the last 1 stage luminous area back to the control module as the minimum voltage state of the luminous area column where the luminous area is located.

Next, taking n=5 and k=1 as an example, the voltage state of the light emitting region itself determined by the light emitting region in the light emitting region row is not the 1 st state, and the minimum voltage state determined by one light emitting region row is exemplified. As shown in fig. 5, IC1 represents a driver of the 1 st stage light emitting region, and so on. The voltage state of the 1 st stage luminous area is the 2 nd state, and the voltage state output by the 1 st stage luminous area is the 2 nd state; the voltage state of the 2 nd stage luminous area is the 3 rd state, and the voltage state of the 2 nd stage luminous area is the 2 nd state compared with the voltage state of the 1 st stage luminous area; the voltage state of the 3 rd-stage light-emitting area is the 2 nd state, and the voltage state of the 3 rd-stage light-emitting area is the 2 nd state compared with the 2 nd state which is the voltage state of the 2 nd-stage light-emitting area; the voltage state of the 4 th-stage light-emitting area is the 3 rd state, and the voltage state of the 4 th-stage light-emitting area is the 2 nd state compared with the voltage state of the 3 rd-stage light-emitting area, namely the 2 nd state; the voltage state of the 5 th-stage light-emitting area is the 3 rd state, and is compared with the 2 nd state which is the voltage state output by the 4 th-stage light-emitting area, and the voltage state output by the 5 th-stage light-emitting area is the 2 nd state; the minimum voltage state of the light emitting region column of the column is the 2 nd state.

Next, taking n=6 and k=2 as examples, the voltage state of the light emitting region itself determined by the light emitting region in the light emitting region row is not the 1 st state, and the minimum voltage state determined by one light emitting region row is exemplified. As shown in fig. 6, IC1 represents the driver of the cascade 1 st stage light emitting region, and so on. The 1 st frame, firstly, the voltage state output by the first light-emitting area group 701 is obtained, the 1 st-stage light-emitting area to the last-stage light-emitting area of the light-emitting area group are selected as the 1 st-stage light-emitting area to the 3 rd-stage light-emitting area according to the preset read-back sequence in response to the read-back signal, that is, the voltage states of the 1 st-stage light-emitting area are sequentially compared and returned, the voltage state of the 1 st-stage light-emitting area is the 2 nd state, and the voltage state output by the 1 st-stage light-emitting area is the 2 nd state; the voltage state of the 2 nd stage luminous area is the 3 rd state, and the voltage state of the 2 nd stage luminous area is the 2 nd state compared with the voltage state of the 1 st stage luminous area; the voltage state of the 3 rd-stage light-emitting area is the 2 nd state, the voltage state of the 3 rd-stage light-emitting area is compared with the 2 nd state which is the voltage state output by the 2 nd-stage light-emitting area, the voltage state output by the 3 rd-stage light-emitting area is the 2 nd state, namely the voltage state output by the first light-emitting area group 701 is the 2 nd state, the IC 4-IC 6 only need to return the 2 nd state and do not need to be compared with the voltage state of the 3 rd-stage light-emitting area group, and the control module takes the received 2 nd state as the voltage state of the first light-emitting area group 701; the 2 nd frame, obtain the voltage state that the second luminous area group 702 outputs, respond to the readback signal, according to the order of reading back of presettingly, choose the 1 st level luminous area of luminous area group to last level luminous area to be 4 th level luminous area to 6 th level luminous area, namely IC 4-IC 6 compares the voltage state and returns sequentially, the voltage state of 4 th level luminous area oneself is 3 rd state, the voltage state that the 4 th level luminous area outputs is 3 rd state; the voltage state of the 5 th-stage light-emitting area is the 2 nd state, and the voltage state of the 5 th-stage light-emitting area is the 2 nd state compared with the 3 rd state which is the voltage state of the 4 th-stage light-emitting area; the voltage state of the 6 th-level light-emitting area is the 2 nd state, and is compared with the voltage state output by the 5 th-level light-emitting area, namely the 2 nd state, the voltage state output by the 6 th-level light-emitting area is the 2 nd state, namely the voltage state output by the second light-emitting area group 702 is the 2 nd state, and the control module takes the received 2 nd state as the voltage state of the second light-emitting area group 702; the control module compares the voltage state of the first light emitting area group 701 with the voltage state of the second light emitting area group 702, and the 2 nd state is taken as the minimum voltage state of the light emitting area column because the voltage states of the first light emitting area group 701 and the second light emitting area group 702 are both 2 nd states.

Based on the same inventive concept, the embodiments of the present application further provide a light emitting substrate, where the light emitting substrate as shown in fig. 1 includes: a plurality of light emitting region columns 1, and a driving module 2, the light emitting region columns 1 including n light emitting regions 101 in cascade, wherein n is an integer greater than 1; the light emitting region 101 includes: a driver IC; the driver IC includes: an address port (not shown);

as shown in fig. 7, the driver IC includes:

a voltage state determining module 8, configured to obtain a voltage of the light emitting area 101, and determine a voltage state of the light emitting area 101 according to the voltage of the light emitting area 101; the voltage state is divided into m-level states, the m-level states are respectively from a 1 st state to an m-th state, the voltage corresponding to the i-th state is smaller than the voltage corresponding to the i+1-th state, m is a positive integer greater than 1, and i is a positive integer smaller than m;

the driver ICs and the driving modules 2 of the cascaded n light emitting regions are used for: acquiring the minimum voltage state of the light-emitting area column 1 according to the voltage state of at least part of the light-emitting areas 101 in the light-emitting area column 1; the power supply voltage signal of each light emitting area column 1 is determined according to the minimum voltage state of each light emitting area column 1.

According to the light-emitting substrate provided by the embodiment of the application, through the cascaded drivers, the self voltage state of the light-emitting area is determined according to the voltage of the light-emitting area, the minimum voltage state of the light-emitting area row is determined according to the self voltage state of at least part of the light-emitting areas in the light-emitting area row, the voltage of the light-emitting area row can be regulated according to the minimum voltage state of the light-emitting area row, the voltage state transmission and processing time can be saved, and the voltage state transmission rate can be improved.

In some embodiments, the driver ICs of the cascaded n light emitting regions are specifically configured to:

transmitting the voltage state output by the light-emitting area column 1 to the driving module 2 according to the voltage state of at least part of the light-emitting areas 101 in the light-emitting area column 1; the method is particularly used for: if the voltage state of one of the light emitting areas 101 in the light emitting area column 1 is the 1 st state, the 1 st state is sent to the driving module 2; if the voltage states of the light emitting areas 101 in the light emitting area column 1 do not include the 1 st state, transmitting a voltage state with the minimum voltage in the voltage states of at least part of the light emitting areas to the driving module 2;

the driving module 2 is specifically configured to: and receiving the output voltage state, determining the minimum voltage state of the luminous area columns 1 according to the output voltage state of the luminous area columns 1, and determining the power supply voltage signal of each luminous area column 1 according to the voltage state of each luminous area column 1.

According to the light-emitting substrate provided by the embodiment of the application, through the cascaded drivers, the self voltage state of the light-emitting area is determined according to the voltage of the light-emitting area, the voltage state of the light-emitting area array is determined according to the voltage state output by at least part of the light-emitting areas in the light-emitting area array, only the 1 st state or the voltage state with the minimum voltage in the voltage state of at least part of the light-emitting areas in the light-emitting area array is obtained as the voltage state output by the light-emitting area array, the minimum voltage state of the light-emitting area array is determined according to the voltage state output by the light-emitting area array, the voltage of the light-emitting area array can be regulated according to the minimum voltage state of the light-emitting area array, the voltage state transmission and processing time can be saved, and the voltage state transmission rate can be improved.

In some embodiments, as shown in fig. 1, the drive module 2 is further configured to: transmitting a voltage state acquisition signal to each light emitting region column 1; the driving module 2 includes: the control module 201 and the power module 202. The control module 201 is configured to send a voltage status acquisition signal to each light emitting area column 1, and further configured to receive a voltage status of the light emitting area column 1, and send a voltage status feedback signal corresponding to the voltage status of each light emitting area column 1 to the power module 202 according to the received voltage status. The power module 202 is configured to receive the voltage status feedback signal, determine a power voltage signal of each light emitting area column 1 according to the voltage status feedback signal, and provide the power voltage signal to the light emitting device.

That is, according to the light-emitting substrate provided by the embodiment of the application, the power voltage signal of each light-emitting area column is adjusted through the determined voltage state of each light-emitting area column, and the voltage of the output port of the driver is adjusted through adjusting the power voltage signal, so that the influence on the normal operation of the driver due to the fact that the voltage of the anode of the light-emitting device fluctuates due to the fact that the voltage of the power line drops is avoided. And through the cascaded driver, only the 1 st state or the voltage state feedback of the luminous area column is determined according to the voltage state with the minimum partial voltage so as to adjust the power supply voltage, the voltage states of n luminous areas in one luminous area column are not required to be fed back to the control module step by step, the voltage states of the luminous areas are calculated through the control module, the quantity of data acquired by the control module can be reduced, the response time for acquiring the data can be further reduced, and the power consumption of the luminous substrate is reduced. In addition, the acquired data quantity is reduced, namely the data quantity required to be stored by the control module is reduced, so that the waste of storage space can be avoided, and the difficulty in processing the voltage state by the control module can be reduced.

In some embodiments, the driver of the cascaded n light emitting regions is further configured to: sequentially receiving voltage state acquisition signals;

the voltage state determination module is further configured to: and responding to the voltage state acquisition signal, detecting the voltage of the light-emitting area corresponding to the driver to acquire the voltage of the light-emitting area, and determining the voltage state of the light-emitting area according to the detected voltage.

In some embodiments, as shown in fig. 7, the driver IC further includes: output ports OUT0, OUT1, OUT2, OUT3.

In some embodiments, the voltage state determining module obtains a voltage of each light emitting region, specifically including: the voltage of the output port of the driver is obtained.

In a specific implementation, if the driver includes a plurality of output ports, the voltage state determining module obtains a voltage of the output port of the driver, and specifically includes: the voltage state determining module obtains the minimum voltage of a plurality of output ports of each light emitting area. Taking fig. 7 as an example, the voltage state determining module 8 obtains the voltage of each output port OUT0, OUT1, OUT2, OUT3, and then extracts the minimum voltage from the obtained voltage of each output port OUT0, OUT1, OUT2, OUT3.

Comparing the voltage of the light-emitting area with a preset voltage range;

In a specific implementation, the 1 st state is a low-voltage state, the 2 nd state is a medium-voltage state, and the 3 rd state is a high-voltage state.

In the implementation, the 1 st state corresponds to the first level signal, the 2 nd state corresponds to the second level signal, the 3 rd state corresponds to the third level signal, and the voltage of the first level signal is smaller than that of the second level signal; when the first voltage state is the 1 st state, the first voltage state is the first level signal, when the first voltage state is the 2 nd state, the first voltage state is the second level signal, and when the first voltage state is the 3 rd state, the first voltage state is the third level signal.

In the implementation, comparing the voltages corresponding to the voltage states of the n cascaded light-emitting areas step by step, and if the 3 rd state is the state with the lowest voltage in the n light-emitting areas, the voltage state of the light-emitting area column is a third level signal corresponding to the 3 rd state; if the 2 nd state is the state with the lowest voltage in the n light-emitting areas, the voltage state of the light-emitting area row is the second level signal corresponding to the 2 nd state; if the 1 st state is the state with the lowest voltage in the n light emitting areas, the voltage state of the light emitting area row is the first level signal corresponding to the 1 st state.

In some embodiments, as shown in fig. 7, the address signal terminals DI, DO include: a first address port DI and a second address port DO;

the first address port DI is used for inputting signals sent by the control module, and the second address port DO is used for outputting signals sent by the control module; alternatively, the first address port DI is used for outputting a signal transmitted to the control module, and the second address port DO is used for outputting a signal transmitted to the control module; i.e. the functions of the first address port DI and the second address port DO may be interchanged.

For example, the first address port DI is used for inputting a voltage state acquisition signal;

the second address port DO is used for outputting a voltage state acquisition signal;

the first address port DI is also used for outputting a voltage state;

the second address port DO is also used for receiving the voltage state output by the light emitting area of the previous stage, i.e. the second address port DO is also used for inputting the voltage state.

In some embodiments, the driver of the cascaded n light emitting regions is specifically configured to: the first determined 1 st state in the n cascaded luminous areas is sent to a driving module; specifically, the first determined 1 st state in the n cascaded light-emitting areas is sent to a control module;

the driving module is used for determining the voltage state of the light emitting area column 1 according to the voltage state output by the light emitting area column, and specifically comprises the following steps: the 1 st state is taken as the minimum voltage state of the light emitting area column.

According to the light-emitting substrate provided by the embodiment of the application, when the voltage state of the light-emitting area in the light-emitting area row is the 1 st state, namely the low voltage state, and the 1 st state of the light-emitting area is the 1 st state which is determined first, the 1 st state is obtained to be used as the minimum voltage state feedback of the light-emitting area row to adjust the power supply voltage, the voltage states of other light-emitting areas of the light-emitting area row are not required to be obtained again, the number of data obtained by the control module can be reduced, and the feedback efficiency of the voltage states can be improved.

the light emitting area group comprises drivers specifically for: according to the voltage state of the luminous area in the luminous area group, taking the voltage state with the minimum voltage as the voltage state output by the luminous area group, and sending the voltage state output by the luminous area group to the driving module; specifically, the voltage state output by the luminous area group is sent to a control module;

Alternatively, in the embodiment, k may be greater than 1 as shown in fig. 4, where k=2 is illustrated in fig. 4, and one light emitting region column 1 includes two light emitting region groups 7, and the two light emitting region groups 7 are the first light emitting region group 701 and the second light emitting region group 702, respectively. In the implementation, when k is greater than 1, the control module sequentially acquires the voltage states output by the k light emitting area groups, and specifically includes: and sequentially acquiring the voltage states output by the k luminous area groups according to the sequence from the control module to the control module. Taking fig. 4 as an example, the control module obtains the voltage state output by the first light-emitting area group first, and then obtains the voltage state output by the second light-emitting area group.

In the implementation, when k is greater than 1, the output voltage states of the k light-emitting area groups are sequentially transmitted back to the control module through the cascaded drivers, the control module compares the voltages of the voltage states output by the k light-emitting area groups, and the voltage state with the minimum voltage in the voltage states output by the k light-emitting area groups is used as the minimum voltage state of the light-emitting area column.

According to the light-emitting substrate provided by the embodiment of the application, when the voltage states of the light-emitting areas in the light-emitting area array are not the 1 st state, the control module obtains the voltage states of the k light-emitting area groups. That is, for a row of light emitting areas, only k voltage states need to be fed back to the control module, and the voltage states of n light emitting areas in a row of light emitting areas do not need to be fed back to the control module step by step, and then the voltage states of the light emitting areas are calculated by the control module, so that the number of data acquired by the control module can be reduced, the response time for acquiring the data can be reduced, and the power consumption of the light emitting substrate can be reduced. In addition, the acquired data quantity is reduced, namely the data quantity required to be stored by the control module is reduced, so that the waste of storage space can be avoided, and the difficulty in processing the voltage state by the control module can be reduced.

as shown in fig. 7, the driver IC further includes a comparing module 9;

According to the light-emitting substrate provided by the embodiment of the application, when the voltage states of the light-emitting areas in the light-emitting area array are not the 1 st state, the voltage states of n light-emitting areas in cascade connection of each light-emitting area array can be compared step by step through the cascade driver, only the voltage signal with the lowest voltage is needed to be used as the voltage state feedback of the light-emitting area array, and for a light-emitting area array, only k voltage states are needed to be fed back to the control module to adjust the power supply voltage. That is, the embodiment of the application does not need to feed back the voltage states of the n light-emitting areas to the control module step by step, and the control module calculates the voltage states of the light-emitting areas, so that the number of data acquired by the control module can be reduced, the response time for acquiring the data can be further reduced, and the power consumption of the light-emitting substrate is reduced. In addition, the acquired data quantity is reduced, namely the data quantity required to be stored by the control module is reduced, so that the waste of storage space can be avoided, and the difficulty in processing the voltage state by the control module can be reduced.

the voltage state determination module is used for: acquiring the voltage of each light-emitting area in a first period;

the driver ICs of the cascaded n light emitting regions are for: determining and transmitting a voltage state of the light emitting region column output in a second period;

the driving module is used for: the voltage state of the light emitting region column output is received in the second period.

In some embodiments, if the voltage states of the light emitting regions in the light emitting region column include the 1 st state, the driver ICs of the n cascaded light emitting regions are specifically configured to:

transmitting the 1 st state during a second period;

if none of the voltage states of the light emitting regions in the light emitting region column includes the 1 st state, the driver ICs of the n cascaded light emitting regions are specifically configured to:

In specific implementation, in a first period, the driver receives a signal of the control module, and the voltage state determining module obtains a minimum voltage of an output port of each light emitting area in response to a voltage state obtaining signal sent by the control module. In a second period, the comparison module is used for comparing the voltage state of the minimum voltage luminous area according to the voltage state of the minimum voltage luminous area; if the voltage state of the self determined by the comparison module is the 1 st state, and the 1 st state is the 1 st state determined first, the comparison module outputs the 1 st state; if the voltage states of the light emitting areas in the light emitting area row do not include the 1 st state, the comparison module outputs the voltage state of the comparison module, or the voltage state of the comparison module compares with the voltage state output by the previous stage to obtain the output voltage state and outputs the output voltage state to the next stage driver.

In some embodiments, as shown in fig. 7, the driver IC further includes: a power supply port V1, and a ground port GND.

In some embodiments, as shown in fig. 1, light emitting region 101 further includes light emitting units 1011.

In some embodiments, the light emitting unit includes at least one light emitting device. I.e. the light emitting unit may comprise only one light emitting device or may comprise a plurality of light emitting devices. When the light emitting unit includes a plurality of light emitting devices, the plurality of light emitting devices may be connected in series or in parallel.

In some embodiments, the light emitting device is a micro-sized inorganic light emitting diode device.

In particular embodiments, the Micro-sized inorganic light emitting diode is, for example, a Mini light emitting diode (Mini Light Emitting Diode, mini-LED) or a Micro light emitting diode (Micro Light Emitting Diode, micro-LED). Mini-LEDs and Micro-LEDs are small in size and high in brightness, and can be widely applied to display devices or backlight modules thereof. For example, typical dimensions (e.g., length) of Micro-LEDs are less than 100 microns, such as 10 microns to 80 microns; typical dimensions (e.g., length) of Mini-LEDs are 80 microns to 350 microns, such as 80 microns to 120 microns.

I.e. the light emitting substrate serves as a backlight for the display device.

The display device provided by the embodiment of the application comprises the light-emitting substrate provided by the embodiment of the application, the light-emitting substrate can adjust the voltage of the light-emitting area row according to the minimum voltage state of the light-emitting area row, the phenomenon that the display effect of the display device is affected due to the fact that a driver cannot work normally due to too low voltage is avoided, and the fact that power consumption caused by too high voltage is high can be avoided. The luminous substrate determines the self voltage state of the luminous area according to the voltage of the luminous area through the cascaded drivers, and determines the minimum voltage state of the luminous area according to the voltage state of at least part of the luminous area in the luminous area, and then the voltage of the luminous area can be regulated according to the minimum voltage state of the luminous area, so that the voltage state transmission and processing time can be saved, and the voltage state transmission rate can be improved.

In some embodiments, the display panel is a liquid crystal display panel, comprising: an array substrate and an opposite substrate disposed opposite to each other, and a liquid crystal layer disposed between the array substrate and the opposite substrate. For example, the array substrate includes a plurality of sub-pixel units, each of which includes a thin film transistor and a pixel electrode; the opposite substrate comprises color resistors which are in one-to-one correspondence with the sub-pixel units; the array substrate or the opposite substrate further includes a common electrode.

The display device provided by the embodiment of the application is as follows: any product or component with display function such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. Other essential components of the display device are those of ordinary skill in the art, and will not be described in detail herein, nor should they be considered as limiting the application. The implementation of the display device can be referred to the embodiment of the light-emitting substrate, and the repetition is not repeated.

In summary, according to the driving method of the light emitting substrate, the light emitting substrate and the display device provided by the embodiments of the present application, the cascade driver is used to determine the self-voltage state of the light emitting region according to the voltage of the light emitting region, and determine the minimum voltage state of the light emitting region according to the voltage state of at least part of the light emitting region in the light emitting region row, and then the voltage of the light emitting region row can be adjusted according to the minimum voltage state of the light emitting region row, so that the voltage state transmission and processing time can be saved, and the voltage state transmission rate can be improved.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A driving method of a light emitting substrate, the light emitting substrate comprising: a plurality of light emitting region columns including n light emitting regions in cascade, wherein n is an integer greater than 1; the light emitting region includes: a driver, the driver comprising: an address port; characterized in that the method comprises:

acquiring the minimum voltage state of the light-emitting area column according to the voltage state of at least part of the light-emitting areas in the light-emitting area column;

2. The method according to claim 1, wherein the obtaining the minimum voltage state of the light emitting area column according to the voltage state of at least part of the light emitting areas in the light emitting area column comprises:

the method for obtaining the voltage state output by the light-emitting area column according to the voltage state of at least part of the light-emitting areas in the light-emitting area column specifically comprises the following steps: if the voltage state of one of the light emitting areas in the light emitting area row is the 1 st state, acquiring the 1 st state as the voltage state output by the light emitting area row; if the voltage states of the light-emitting areas in the light-emitting area column do not include the 1 st state, acquiring the voltage state with the minimum voltage in the voltage states of at least part of the light-emitting areas as the voltage state output by the light-emitting area column;

3. The method of claim 2, further comprising, prior to acquiring the voltage of the light emitting region:

if the voltage state of one of the light emitting regions in the light emitting region row is the 1 st state, the 1 st state is obtained as the voltage state output by the light emitting region row, which specifically includes:

determining a minimum voltage state of the light emitting area column according to the voltage state output by the light emitting area column specifically comprises the following steps:

and taking the 1 st state as the minimum voltage state of the luminous area column.

4. A method according to claim 3, wherein the light emitting areas of the light emitting area array comprise n light emitting areas divided into k light emitting area groups, k < n, k being a positive integer; if the voltage states of the light emitting regions in the light emitting region column do not include the 1 st state, acquiring a voltage state with the minimum voltage in the voltage states of at least part of the light emitting regions as the voltage state output by the light emitting region column, specifically including:

according to the voltage state of the luminous area in the luminous area group, taking the voltage state with the minimum voltage as the voltage state of the output of the luminous area group;

sequentially outputting the voltage states output by k luminous area groups as the voltage states output by the luminous area columns;

and taking the voltage state with the smallest voltage among the voltage states output by the k luminous area groups as the smallest voltage state of the luminous area columns.

5. The method of claim 4, wherein the light emitting substrate further comprises: a control module electrically connected with the light emitting region; the address port includes: a first address port and a second address port;

the first address port is used for inputting the voltage state acquisition signal, and the second address port is used for outputting the voltage state acquisition signal;

the first address port is further configured to output the voltage state, and the second address port is further configured to input the voltage state.

6. The method according to claim 5, wherein the voltage state with the smallest voltage is taken as the voltage state of the output of the light-emitting area group according to the voltage state of the light-emitting area in the light-emitting area group, and the method specifically comprises the following steps:

sequentially sending back read signals to n cascaded light emitting areas in the light emitting area column;

responding to a readback signal, determining the 1 st-stage luminous area to the last 1-stage luminous area of the luminous area group according to a preset readback sequence, comparing the voltage states of the 1 st-stage luminous area to the last 1-stage luminous area in the luminous area group step by step according to the preset readback sequence, and taking the voltage state with the minimum voltage as the voltage state output by the luminous area group.

7. The method according to claim 6, wherein the step-by-step comparison of the voltage states of the 1 st-level light emitting area to the last 1 st-level light emitting area in the light emitting area group according to the preset read-back sequence, wherein the voltage state with the minimum voltage is used as the voltage state of the output of the light emitting area group, and specifically comprises:

sequentially obtaining the voltage state output by each light-emitting area in the light-emitting area group according to the preset readback sequence, wherein the method specifically comprises the following steps: taking the voltage state of the 1 st-stage light-emitting area as the output voltage state; comparing the voltage state of the jth stage light-emitting area of the preset readback sequence with the voltage state output by the light-emitting area of the upper stage of the preset readback sequence, and taking the voltage state with the minimum voltage as the voltage state output by the jth stage light-emitting area; wherein j is an integer greater than 1 and less than or equal to p, p is the number of the light-emitting areas included in the light-emitting area group, and p is a positive integer less than n;

and acquiring the voltage state output by the light-emitting area at the last stage in the preset readback sequence as the voltage state output by the light-emitting area group.

8. The method according to any one of claims 1 to 7, wherein m = 3, determining the voltage state of the light emitting area itself from the voltage of the light emitting area, in particular comprising:

comparing the voltage of the light-emitting area with a preset voltage range;

if the voltage of the light-emitting area is larger than or equal to the minimum value of the preset voltage range and smaller than or equal to the maximum value of the preset voltage range, determining that the voltage state of the light-emitting area is the 2 nd state;

and if the voltage of the light-emitting area is larger than the maximum value of the preset voltage range, determining that the voltage state of the light-emitting area is the 3 rd state.

9. The method of any one of claims 1-7, wherein the driver further comprises at least one output port, the output port being electrically connected to the light emitting unit; the step of obtaining the voltage of each light-emitting area specifically comprises the following steps:

and acquiring the minimum voltage of the output port of each light-emitting area.

10. A light-emitting substrate, characterized in that the light-emitting substrate comprises: the light emitting device comprises a plurality of light emitting area columns and a driving module, wherein the light emitting area columns comprise n cascaded light emitting areas, and n is an integer greater than 1; the light emitting region includes: a driver; the driver includes: an address port;

The driver includes:

the driver and the driving module of the cascaded n light emitting areas are used for: acquiring the minimum voltage state of the light-emitting area column according to the voltage state of at least part of the light-emitting areas in the light-emitting area column; and determining a power supply voltage signal of each light emitting area column according to the minimum voltage state of each light emitting area column.

11. The light-emitting substrate according to claim 10, wherein the driver of the cascaded n light-emitting regions is specifically configured to:

transmitting the voltage state output by the light-emitting area column to the driving module according to the voltage state of at least part of the light-emitting areas in the light-emitting area column; the method is particularly used for: if the voltage state of one of the light emitting areas in the light emitting area row is the 1 st state, the 1 st state is sent to the driving module; if the voltage states of the light-emitting areas in the light-emitting area column do not include the 1 st state, sending a voltage state with the minimum voltage in the voltage states of at least part of the light-emitting areas to the driving module;

12. The light emitting substrate of claim 11, wherein the drive module is further configured to: transmitting a voltage state acquisition signal to each light emitting area column;

the driver of the cascaded n light emitting regions is further configured to: sequentially receiving the voltage state acquisition signals;

the voltage state determination module is further configured to: responding to the voltage state acquisition signal, detecting the voltage of the light-emitting area corresponding to the driver to acquire the voltage of the light-emitting area, and determining the voltage state of the light-emitting area according to the detected voltage;

the driver of the cascaded n light emitting regions is specifically configured to: transmitting the first determined 1 st state in the n cascaded light-emitting areas to the driving module;

the driving module is configured to determine a voltage state of the light emitting area column according to the voltage state output by the light emitting area column specifically includes: and taking the 1 st state as the minimum voltage state of the luminous area column.

13. The light-emitting substrate according to claim 12, wherein n light-emitting regions included in the light-emitting region array are divided into k light-emitting region groups, k < n, k being a positive integer;

the driver included in the light emitting area group is specifically configured to: according to the voltage state of the light-emitting area in the light-emitting area group, taking the voltage state with the minimum voltage as the voltage state output by the light-emitting area group, and sending the voltage state output by the light-emitting area group to the driving module;

the driver of the cascaded n light emitting regions is specifically configured to: sequentially sending the voltage states output by the k luminous area groups to the driving module as the voltage states output by the luminous area columns;

the driving module is specifically used for: and sequentially receiving the voltage states output by the k luminous area groups, and taking the voltage state with the smallest voltage in the voltage states output by the k luminous area groups as the smallest voltage state of the luminous area columns.

14. The light emitting substrate of claim 13, wherein the address port comprises: a first address port and a second address port;

the first address port is further used for outputting the voltage state, and the second address port is further used for inputting the voltage state;

the drive module is also for: sending a readback signal to the luminous area column, and determining the 1 st-level luminous area to the last 1-level luminous area of the luminous area group according to a preset readback sequence;

the driver further comprises a comparison module;

the comparison module included in the light emitting area group is specifically configured to:

and comparing the voltage state of the 1 st-stage luminous area in the luminous area group to the voltage state of the last 1-stage luminous area according to the preset readback sequence step by step, and taking the voltage state with the minimum voltage as the voltage state output by the luminous area group.

15. The light-emitting substrate of claim 14, wherein the comparison module of the 1 st level light-emitting area in the light-emitting area group is specifically configured to: taking the voltage state of the 1 st stage luminous area as an output voltage state, and sending the output voltage state to the next stage luminous area;

According to the preset read-back sequence, the comparison module of the j-th stage light emitting area in the light emitting area group is specifically configured to: comparing the voltage state of the jth stage light-emitting area with the voltage state output by the light-emitting area at the upper stage of the preset readback sequence, taking the voltage state with the minimum voltage as the voltage state output by the jth stage light-emitting area, and transmitting the output voltage state to the light-emitting area at the next stage; wherein j is an integer greater than 1 and less than or equal to p, p is the number of the light-emitting areas included in the light-emitting area group, and p is a positive integer less than n;

the driving module is specifically used for: and receiving the voltage state output by the light-emitting area at the last stage in the preset readback sequence, and taking the voltage state output by the light-emitting area at the last stage in the preset readback sequence as the voltage state output by the light-emitting area group.

16. The light emitting substrate according to any one of claims 10 to 15, wherein m = 3, the voltage state determination module is specifically configured to:

comparing the voltage of the light-emitting area with a preset voltage range;

the driver further comprises an output port, and the voltage state determining module is specifically configured to: and obtaining the minimum voltage of the output port.

17. A display device, characterized in that the display device comprises: the light-emitting substrate according to any one of claims 10 to 16, and a display panel located on a light-emitting side of the light-emitting substrate.