A light-emitting panel, a backlight module, and a control method

Abstract

The present application discloses a light-emitting panel, a backlight module, and a control method. The light-emitting panel includes: a light-emitting array, the light-emitting array including a plurality of light-emitting elements arranged in an array; the light-emitting array is divided into a plurality of light-emitting element groups, the light-emitting element group including at least one light-emitting element subgroup, the light-emitting element subgroup being at least a part of a column of light-emitting elements or at least a part of a row of light-emitting elements; the arrangement directions of the light-emitting elements in different light-emitting element subgroups are the same; wherein, in the same light-emitting element group, the respective light-emitting elements are connected in series in sequence, and on the series path, at least two adjacent light-emitting elements are connected in series through a path selector. The conduction state of the connected light-emitting elements can be controlled based on the path selector. When the path selector makes the connected light-emitting elements conduct, the connected light-emitting elements can be synchronously controlled for light emission. When the path selector makes the connected light-emitting elements open circuit, the connected light-emitting elements can be independently controlled for light emission.

Description

Technical Field

[0001] The present application relates to the technical field of electronic devices, and more specifically, to a light-emitting panel, a backlight module, and a control method. Background Art

[0002] A liquid crystal display (LCD) is a mainstream display screen used by electronic devices to achieve a display function. The LCD cannot emit light actively and needs to use the backlight provided by the backlight module for image display. Commonly used backlight modules are divided into direct-lit backlight modules and edge-lit backlight modules based on different light source positions. For a direct-lit backlight module, the light source is a light-emitting panel located below the light guide plate. The light-emitting panel has a plurality of light-emitting elements arranged in an array and can provide a surface light source.

[0003] In order to improve the contrast and color saturation of an image, the backlight module needs to be able to perform zoned backlight control. In the existing backlight module, the backlight zones of the light-emitting panel are fixed and cannot further improve the contrast and color saturation of the image. Summary of the Invention

[0004] In view of this, the present application provides a light-emitting panel, a backlight module, and a control method, and the solutions are as follows:

[0005] The present application provides a light-emitting panel, including:

[0006] A light-emitting array, the light-emitting array including a plurality of light-emitting elements arranged in an array;

[0007] The light-emitting array is divided into a plurality of light-emitting element groups, the light-emitting element group including at least one light-emitting element subgroup, the light-emitting element subgroup being at least part of a column of light-emitting elements or at least part of a row of light-emitting elements; the arrangement directions of the light-emitting elements in different light-emitting element subgroups are the same;

[0008] Wherein, in the same light-emitting element group, the light-emitting elements are connected in series in sequence, and on the series path, at least two adjacent light-emitting elements are connected in series through a path selector.

[0009] The present application further provides a backlight module, including:

[0010] The above-mentioned light-emitting panel;

[0011] A light guide plate located on the light-emitting side of the light-emitting panel.

[0012] The present application further provides a control method for the above-mentioned backlight module, including:

[0013] Based on a control signal, setting the conduction state of the path selector in the light-emitting panel to divide the light-emitting area of the light-emitting array to form a plurality of light-emitting zones;

[0014] Scan the light-emitting elements in each row of the display array in sequence based on the scanning timing, and control the light-emitting states of the light-emitting elements in each light-emitting partition.

[0015] As can be seen from the above description, in the light-emitting panel, backlight module, and control method provided by the technical solution of the present application, the conduction state of the connected light-emitting elements can be controlled based on the path selector. When the path selector makes the connected light-emitting elements conduct, the connected light-emitting elements can be synchronously controlled to emit light. When the path selector makes the connected light-emitting elements open circuit, the connected light-emitting elements can be independently controlled to emit light. In this way, more flexible light-emitting area division can be achieved for the light-emitting panel. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only the embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0017] The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present application can be implemented. Therefore, they do not have technical essential meanings. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present application can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present application.

[0018] Figure 1 It is a schematic structural diagram of a light-emitting panel provided by an embodiment of the present application;

[0019] Figure 2 It is a schematic structural diagram of another light-emitting panel provided by an embodiment of the present application;

[0020] Figure 3 It is a schematic structural diagram of the connection end of a path selector provided by an embodiment of the present application;

[0021] Figure 4 It is a circuit diagram of a path selector provided by an embodiment of the present application;

[0022] Figure 5 It is a sectional view of a light-emitting panel provided by an embodiment of the present application;

[0023] Figure 6 It is a schematic structural diagram of the port of a driving circuit provided by an embodiment of the present application;

[0024] Figure 7Schematic diagram of another light-emitting panel provided by an embodiment of the present application;

[0025] Figure 8 Schematic diagram of another light-emitting panel provided by an embodiment of the present application;

[0026] Figure 9 Schematic diagram of the principle of a light-emitting partition provided by an embodiment of the present application;

[0027] Figure 10 Schematic diagram of the principle of another light-emitting partition provided by an embodiment of the present application;

[0028] Figure 11 Schematic diagram of the principle of another light-emitting partition provided by an embodiment of the present application;

[0029] Figure 12 Schematic diagram of the principle of another light-emitting partition provided by an embodiment of the present application;

[0030] Figure 13 Schematic diagram of the principle of another light-emitting partition provided by an embodiment of the present application;

[0031] Figure 14 Schematic diagram of the principle of another light-emitting partition provided by an embodiment of the present application;

[0032] Figure 15 Schematic diagram of the structure of a backlight module provided by an embodiment of the present application;

[0033] Figure 16 Schematic diagram of the process of a backlight module control method provided by an embodiment of the present application;

[0034] Figure 17 Circuit structure diagram of a light-emitting element group provided by an embodiment of the present application;

[0035] Figure 18 Timing diagram provided by an embodiment of the present application;

[0036] Figure 19 Schematic diagram of another light-emitting panel provided by an embodiment of the present application. Detailed implementation manners

[0037] Next, the embodiments in the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0038] To make the above objects, features, and advantages of the present application more obvious and understandable, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Reference Figure 1 as shown, Figure 1 is a schematic structural diagram of a light-emitting panel provided by an embodiment of the present application. The shown light-emitting panel 10 includes:

[0040] A light-emitting array 11, the light-emitting array 11 includes a plurality of light-emitting elements P arranged in an array;

[0041] The light-emitting array 11 is divided into a plurality of light-emitting element groups 13. The light-emitting element group 13 includes at least one light-emitting element subgroup R. The light-emitting element subgroup R is at least a part of a column of light-emitting elements P or at least a part of a row of light-emitting elements P; the arrangement directions of the light-emitting elements P in different light-emitting element subgroups R are the same;

[0042] Among them, in the same light-emitting element group 13, the light-emitting elements P are connected in series in sequence, and on the series path, at least two adjacent light-emitting elements P are connected in series through a path selector CM.

[0043] In the light-emitting panel 10 provided by the embodiment of the present application, the conduction state of the connected light-emitting element P can be controlled based on the path selector CM. When the path selector CM makes the connected light-emitting element P conduct, the connected light-emitting element P can be synchronously controlled for light emission. When the path selector CM makes the connected light-emitting element P open circuit, the connected light-emitting element P can be independently controlled for light emission. In this way, the light-emitting panel 10 can achieve a more flexible division of the light-emitting area.

[0044] It is easy to know that when the light-emitting element subgroup R is at least a part of a column of light-emitting elements P, the light-emitting element subgroup R can be a whole column of light-emitting elements P or any part of the light-emitting elements P in a column of light-emitting elements P; when the light-emitting element subgroup R is at least a part of a row of light-emitting elements P, the light-emitting element subgroup R can be a whole row of light-emitting elements P or any part of the light-emitting elements P in a row of light-emitting elements P.

[0045] In Figure 1 the described embodiment, as well as Figure 2 and Figures 7 - 14 and Figure 17 in the subsequent embodiments described, the case where the light-emitting element subgroup R all includes a column of light-emitting elements P is taken as an example for illustration. Obviously, based on requirements, it can be set that the light-emitting element subgroup R all includes a column of light-emitting elements P or a part of a column of light-emitting elements P, or it can also be set that the light-emitting element subgroup R all includes a row of light-emitting elements P or a part of a row of light-emitting elements P, so that the arrangement directions of the light-emitting elements P in different light-emitting element subgroups R are the same.

[0046] Figure 1 In the illustrated manner, taking the example that the light-emitting element group 13 includes two light-emitting element subgroups R, it is obvious that in other manners, the light-emitting element group 13 can be set to include one or any number of light-emitting element subgroups R, and the number of light-emitting element subgroups R in the light-emitting element group 13 can be the same or different.

[0047] It can be set that each light-emitting element group 13 is the same, that is, each light-emitting element group 13 has the same light-emitting element subgroup R, and the connection manner between the light-emitting element P and the path selector CM in different light-emitting element groups 13 is the same. In this way, when the path selector CM in different light-emitting element groups 13 has the same conduction state, the light-emitting elements P in different light-emitting element groups 13 can have the same light-emitting area division manner. Among them, the connection manner between the light-emitting element P and the path selector CM in different light-emitting element groups 13 being the same includes: if two adjacent light-emitting elements P in a light-emitting element group 13 are connected in series through a path selector CM of path one, then the two light-emitting elements P corresponding to these two light-emitting elements P in other light-emitting element groups 13 are also both connected in series through a path selector CM.

[0048] In other embodiments, it can also be set that at least two light-emitting element groups 13 are different. Two light-emitting element groups 13 being different includes: the number of light-emitting element subgroups R in the two light-emitting element groups 13 is different; or, the two light-emitting element groups 13 have the same light-emitting element subgroup, and the connection manner between the light-emitting element P and the path selector CM in the two light-emitting element groups 13 is different. Among them, the connection manner between the light-emitting element P and the path selector CM in the two light-emitting element groups 13 being different includes: the number of path selectors CM in the two light-emitting element groups 13 is different; or, the number of path selectors CM in the two light-emitting element groups 13 is the same, and the light-emitting elements P corresponding to the path selectors CM in the two light-emitting element groups 13 are different.

[0049] In some embodiments of the embodiments of the present application, it can be as Figure 1As shown, in the same light-emitting element group 13, on the series path, any two adjacent light-emitting elements P are connected in series through the path selector CM. In this way, the number of light-emitting elements P that can be synchronously controlled for light emission can be flexibly controlled to a large extent. For example, in the same light-emitting element group 13, when all path selectors CM are turned on, all light-emitting elements P in this light-emitting element group 13 can be synchronously controlled for light emission; when all path selectors CM are open-circuited, all light-emitting elements in this light-emitting element group 13 can be independently controlled for light emission; or when some path selectors CM are open-circuited and some path selectors CM are turned on, based on the on-state of each path selector CM, the area corresponding to the light-emitting element group 13 can be divided into multiple sub-areas, each sub-area includes at least one light-emitting element P, and multiple light-emitting elements P in the same sub-area can be synchronously controlled for light emission, and light-emitting elements P in different sub-areas can be independently controlled for light emission.

[0050] In other embodiments, it is also possible to set that at least two adjacent light-emitting elements P in the light-emitting element group 13 are directly connected in series through a wire.

[0051] Reference Figure 2 As shown, Figure 2 This is a schematic structural diagram of another light-emitting panel provided by an embodiment of the present application. In the shown light-emitting panel 10, in the same light-emitting element group 13, on the series path, at least two adjacent light-emitting elements P are connected in series through the path selector CM, and at least two adjacent light-emitting elements P are directly connected in series through a wire.

[0052] Figure 2 In the shown manner, each light-emitting element group 13 has 2 columns of light-emitting elements P. In the same light-emitting element group 13, on the series path, every 4 form a series unit; each light-emitting element P in the same series unit is connected in series through a wire in sequence; in two adjacent series units, the last light-emitting element P of one series unit is connected in series with the first light-emitting element P of the other series unit through the path selector CM.

[0053] When in the same light-emitting element group 13, in a series path, when at least two adjacent light-emitting elements P are connected in series through a path selector CM and at least two adjacent light-emitting elements P are directly connected in series through a wire, the light-emitting element group 13 includes at least one series unit. The series unit includes a plurality of light-emitting elements P arranged continuously in the series path, and adjacent light-emitting elements P in the series unit are directly connected in series through a wire. The series unit and adjacent light-emitting elements P in the series path are connected in series through the path selector CM. Based on this, it can be known that in the series path, when at least two adjacent light-emitting elements P are connected in series through the path selector CM and at least two adjacent light-emitting elements P are directly connected in series through a wire, in the light-emitting element group 13, the light-emitting elements P directly connected in series through a wire and the light-emitting elements P connected in series through the path selector CM can be set according to requirements. That is to say, there are various combination ways for the series connection mode of the light-emitting elements P in the light-emitting element group 13, not limited to Figure 2 the shown mode.

[0054] Reference Figure 3 as shown, Figure 3 FIG. is a schematic diagram of the connection end structure of a path selector provided by an embodiment of the present application. In the embodiment of the present application, the path selector CM includes: a first connection end A, a second connection end B, a third connection end C, and a control end G; for two light-emitting elements P connected in series through the path selector CM, the cathode of one light-emitting element P is connected to the first connection end A, and the anode of the other light-emitting element P is connected to the second connection end B; the third connection end C is used to input the power supply negative voltage PVEE; wherein, the path selector CM is used to select the conduction between the first connection end A and the second connection end B or select the conduction between the first connection end A and the third connection end C based on the control signal Ctr of the control end G.

[0055] Based on Figure 3 the path selector CM with the described connection end layout, when the path selector CM makes the first connection end A and the second connection end B conduct, the first connection end A and the third connection end C are open, which can make the anode of one light-emitting element P and the cathode of the other light-emitting element P connected, so that the two light-emitting elements P can be synchronously controlled for light emission; when the path selector CM makes the first connection end A and the third connection end C conduct, the first connection end A and the second connection end B are open, which can make the two light-emitting elements P be respectively controlled for light emission.

[0056] Reference Figure 4 as shown, Figure 4The circuit diagram of a path selector provided by an embodiment of the present application. The path selector CM includes: a PMOS switch tube Q1, the gate of the PMOS switch tube Q1 is connected to the control terminal G, the first pole of the PMOS switch tube Q1 is connected to the first connection terminal A, and the second pole of the PMOS is connected to the third connection terminal C; an NMOS switch tube Q2, the gate of the NMOS switch tube Q2 is connected to the control terminal G, the first pole of the NMOS switch tube Q2 is connected to the first connection terminal A, and the second pole of the NMOS switch tube Q2 is connected to the second connection terminal B.

[0057] Adopt Figure 4 The circuit structure shown only requires a CMOS structure composed of two MOS tubes to implement the circuit structure of the first connection terminal A, the second connection terminal B, the third connection terminal C, and the control terminal G in the path selector CM, and the circuit structure is simple.

[0058] Refer to Figure 5 As shown Figure 5 The sectional view of a light-emitting panel provided by an embodiment of the present application. The light-emitting panel 10 includes: a substrate 21; a driving circuit 22 provided on the substrate 21, the light-emitting array 11 is located on the side of the driving circuit 22 away from the substrate 21, and the driving circuit 22 is connected to the anode of the light-emitting element P; wherein, the path selector CM is on the same layer as the driving circuit 22.

[0059] In the light-emitting array 11, the light-emitting elements P are connected to the driving circuit 22 in one-to-one correspondence, and the anode of the light-emitting element P is connected to the corresponding driving circuit 22. As Figure 5 shown, the cathode of the light-emitting element P can be connected through the path selector CM so as to be connected to the anode of another light-emitting element P through the path selector CM. In other ways, the cathode of the light-emitting element P can be directly connected to the anode of another light-emitting element P through a wire.

[0060] The driving circuit 22 includes a plurality of interconnected thin-film transistors (TFTs). As the above-mentioned path selector CM includes MOS switch tubes, setting the path selector CM and the driving circuit 22 on the same layer can fabricate the MOS switch tubes in the path selector CM while fabricating the thin-film transistors in the driving circuit 22, without increasing the thickness of the light-emitting panel. The manufacturing process of the path selector CM is compatible with the manufacturing process of the existing light-emitting panel, and is prepared with the same process as the driving circuit 22. The manufacturing process of the light-emitting panel is simple and the manufacturing cost is low.

[0061] In the embodiments of the present application, the light-emitting element P is a single micro-LED chip, and the micro-LED chip includes Mini LED, Micro LED, etc. The light-emitting element P includes an anode, a cathode, and a light-emitting layer. Among them, the light-emitting element P is a conventional design. In the direction perpendicular to the plane of the light-emitting panel 10, it can be set that the anode and the cathode are located on the same side of the light-emitting element P, or on opposite sides of the light-emitting element P. Optionally, for the convenience of circuit connection between the light-emitting element P and the driving circuit 22 and the path selector CM, in the embodiments of the present application, in the direction perpendicular to the plane of the light-emitting panel 10, as Figure 5 shown, the anode and the cathode are arranged on the same side of the light-emitting element P.

[0062] Refer to Figure 6 shown, Figure 6 is a schematic diagram of the port structure of a driving circuit provided by an embodiment of the present application. The driving circuit 22 is connected to the light-emitting element P in a one-to-one correspondence. The driving circuit 22 includes: a power supply terminal E, which is used to connect to the positive power supply PVDD; a scanning terminal S, which is used to connect to the scanning signal Scan; a data terminal D, which is used to connect to the data signal Data; and an output terminal O, which is connected to the anode of the corresponding light-emitting element P.

[0063] In the light-emitting array 11, the light-emitting elements P are arranged in an array. It can be set that the driving circuits 22 connected to the light-emitting elements P in the same row are connected to the same scanning line to synchronously input the scanning signal Scan through the scanning line, and the driving circuits 22 connected to the light-emitting elements P in the same column are connected to the same data line to synchronously input the data signal Data through the data line. The driving circuits 22 connected to the light-emitting elements P in different rows are connected to different scanning lines, and the driving circuits 22 connected to the light-emitting elements P in different columns are connected to different data lines.

[0064] The driving circuit 22 can provide a driving current for the light-emitting element P based on the scanning signal Scan input by the scanning terminal S. During the light-emitting stage of the light-emitting element P, the driving circuit 22 provides a driving current for the light-emitting element P to make the light-emitting element P emit light. During the non-light-emitting stage, the driving circuit 22 is open-circuited with the anode of the light-emitting element P.

[0065] As described above, the driving circuit 22 includes a plurality of thin-film transistors. The driving circuit 22 can adopt a conventional multi-thin-film transistor circuit structure, which is a conventional design. The embodiments of the present application do not limit the specific implementation manner of the driving circuit 22.

[0066] Refer to Figure 7 shown, Figure 7Schematic diagram of another light-emitting panel provided by an embodiment of the present application. In this method, in the driving circuit 22 connected to the light-emitting elements P in the same row, the scanning terminal S is connected to the same scanning line SL, and the scanning line SL is used to input a scanning signal Scan; the extending direction of the scanning line SL is parallel to the row direction; in the driving circuit 22 connected to the light-emitting elements P in the same column, the data terminal D is connected to the same data line DL, and the data line DL is used to input a data signal Data; the extending direction of the data line DL is parallel to the column direction. For the convenience of illustration, Figure 7 the control terminal G of the path selector CM is not shown in the figure.

[0067] In Figure 7 the shown method, the driving circuits 22 connected to the light-emitting elements P in the same row can share the same scanning line SL, the driving circuits 22 connected to the light-emitting elements P in different rows are connected to different scanning lines SL, the driving circuits 22 connected to the light-emitting elements P in the same column can share the same data line DL, and the driving circuits 22 connected to the light-emitting elements P in different columns are connected to different data lines DL. The extending direction of the scanning line SL is parallel to the row direction, the extending direction of the data line DL is parallel to the column direction, and the scanning line SL and the data line DL are vertically crossed. This method facilitates the layout of signal lines in the light-emitting panel 10.

[0068] In some embodiments of the embodiments of the present application, multiple light-emitting elements P in the light-emitting element subgroup R are arranged in sequence along the first direction; the light-emitting elements P in two adjacent light-emitting element groups 13 in the second direction are open-circuited, and the second direction intersects the first direction. When the light-emitting element subgroup R is a column of light-emitting elements P, the first direction is the column direction and the second direction is the row direction. When the light-emitting element subgroup R is a row of light-emitting elements P, the first direction is the row direction and the second direction is the column direction. In this method, the light-emitting elements P in the same light-emitting element group 13 are connected in series one by one, and the light-emitting elements P in different light-emitting element groups 13 are open-circuited. In this way, each light-emitting element group 13 can independently divide the light-emitting area based on the corresponding path selector CM.

[0069] Referring to Figure 8 the figure shown, Figure 8 Schematic diagram of another light-emitting panel provided by an embodiment of the present application. When the light-emitting element subgroups R are all rows of light-emitting elements P or all columns of light-emitting elements P, there are N light-emitting elements P arranged in sequence along the first direction in the light-emitting element subgroup R, and the N light-emitting elements P are sequentially the first light-emitting element P1 to the Nth light-emitting element P N ; in the second direction, there are M light-emitting element subgroups R arranged in sequence in the light-emitting element group 13, and the M light-emitting element subgroups R are sequentially the first light-emitting element subgroup R1 to the Mth light-emitting element subgroup R M; both M and N are positive integers greater than 1; the second direction intersects with the first direction. In the same light-emitting element group 13, for the i-th light-emitting element subgroup R i the j-th light-emitting element P j has its cathode connected to the anode of the j-th light-emitting element P i+1 of the (i + 1)-th light-emitting element subgroup R j through a path selector CM; the cathode of the q-th light-emitting element P M of the M-th light-emitting element subgroup R q is connected to the anode of the (q + 1)-th light-emitting element P q+1 of the first light-emitting element subgroup R1 through a path selector CM; i is a positive integer less than M, j is a positive integer not greater than N, and q is a positive integer less than N.

[0070] In Figure 8 the illustrated manner, taking the light-emitting element subgroup R as a column of light-emitting elements P as an example for illustration. When the light-emitting element subgroup R is a row of light-emitting elements P, it is equivalent to rotating the Figure 8 illustrated structure by 90°. The circuit connection manner also satisfies the above conditions, and the embodiments of the present application will not illustrate it separately herein.

[0071] In Figure 8 the illustrated manner, each light-emitting element P is correspondingly connected to a driving circuit 22. In the same light-emitting element group 13, on the series path, two adjacent light-emitting elements P are connected in series through a path selector CM. Based on this circuit structure, the segmentation manner of the light-emitting partitions in the light-emitting element group 13 can be adjusted arbitrarily, making the adjustment manner of the light-emitting partitions of the light-emitting panel 10 more flexible.

[0072] For the convenience of illustration, Figure 8 the control terminal G of the path selector CM is not shown in Figure 8 the illustrated manner. In

[0073] the illustrated manner, the light-emitting element group 13 includes two light-emitting element subgroups R, that is, M = 2, and the number of light-emitting elements in the light-emitting element subgroup R is greater than 4, that is, N is greater than 4. In this manner, taking the light-emitting element subgroup R as a column of light-emitting elements P as an example for illustration, the first direction is the column direction, and the second direction is the row direction. It is easy to know that the values of M and N can be selected based on requirements, and the embodiments of the present application do not limit this. Moreover, as described above, the light-emitting element subgroup R can also be set as a row of light-emitting elements P. In this case, the first direction is the row direction, and the second direction is the column direction.

[0073] In some embodiments of the embodiments of the present application, in the same light-emitting element group 13, when all the path selectors CM make the two connected light-emitting elements P open-circuited, each light-emitting element P can be independently controlled for light emission. As Figure 8As shown, when the path selectors CM in the same light-emitting element group 13 all make the connected light-emitting elements P conduct, a conductive series path is formed in the light-emitting element group 13, and light-emitting control can be performed synchronously.

[0074] In some embodiments of the present application, in the same light-emitting element group 13, when at least one path selector CM makes the two connected light-emitting elements P conduct, the two light-emitting elements can perform light-emitting control synchronously. For example Figure 8 As shown, when any one path selector CM in the same light-emitting element group 13 makes the two connected light-emitting elements P conduct, the two light-emitting elements connected by the path selector CM can perform light-emitting control synchronously. In different conduction state combinations of all the path selectors CM in the light-emitting element group 13, the light-emitting element group 13 can have different light-emitting partitions. By simply controlling the conduction states of the respective path selectors CM, simple control of the light-emitting partitions of the light-emitting panel 10 can be achieved.

[0075] Refer to Figure 9 As shown, Figure 9 is a schematic diagram of the principle of a light-emitting partition provided by an embodiment of the present application. Combining Figure 8 and Figure 9 As shown, in this method, in the same light-emitting element group 13, on the series path, every 6 light-emitting elements P form a light-emitting partition 131. On the series path, the adjacent two light-emitting elements P in the same light-emitting partition 131 are both serially conducted based on the connected path selector CM; among the adjacent two light-emitting partitions 131, the last light-emitting element P in the previous light-emitting partition 131 and the first light-emitting element P in the subsequent light-emitting partition 131 are open-circuited based on the connected path selector CM. This method can enable every 6 light-emitting elements P in the same light-emitting element group 13 to correspond to a light-emitting partition 131, and the 6 light-emitting elements P can perform light-emitting control synchronously, and different light-emitting partitions 131 can perform light-emitting control independently.

[0076] Refer to Figure 10 As shown, Figure 10 is another schematic diagram of the principle of a light-emitting partition provided by an embodiment of the present application. Combining Figure 8 and Figure 10As shown, in this method, in the same light-emitting element group 13, on the series path, every 5 light-emitting elements P form a light-emitting partition 131. On the series path, two adjacent light-emitting elements P in the same light-emitting partition 131 are connected in series and conducted based on the connected path selector CM; in two adjacent light-emitting partitions 131, the last light-emitting element P in the previous light-emitting partition 131 and the first light-emitting element P in the next light-emitting partition 131 are disconnected based on the connected path selector CM. This method can make every 5 light-emitting elements P in the same light-emitting element group 13 correspond to a light-emitting partition 131. These 5 light-emitting elements P can be synchronously controlled for light emission, and different light-emitting partitions 131 can be independently controlled for light emission.

[0077] Reference Figure 11 As shown, Figure 11 is a schematic diagram of the principle of another light-emitting partition provided by an embodiment of the present application. Combining Figure 8 and Figure 11 As shown, in this method, in the same light-emitting element group 13, on the series path, every 4 light-emitting elements P form a light-emitting partition 131. On the series path, two adjacent light-emitting elements P in the same light-emitting partition 131 are connected in series and conducted based on the connected path selector CM; in two adjacent light-emitting partitions 131, the last light-emitting element P in the previous light-emitting partition 131 and the first light-emitting element P in the next light-emitting partition 131 are disconnected based on the connected path selector CM. This method can make every 4 light-emitting elements P in the same light-emitting element group 13 correspond to a light-emitting partition 131. These 4 light-emitting elements P can be synchronously controlled for light emission, and different light-emitting partitions 131 can be independently controlled for light emission.

[0078] Reference Figure 12 As shown, Figure 12 is a schematic diagram of the principle of another light-emitting partition provided by an embodiment of the present application. Combining Figure 8 and Figure 12 As shown, in this method, in the same light-emitting element group 13, on the series path, every 3 light-emitting elements P form a light-emitting partition 131. On the series path, two adjacent light-emitting elements P in the same light-emitting partition 131 are connected in series and conducted based on the connected path selector CM; in two adjacent light-emitting partitions 131, the last light-emitting element P in the previous light-emitting partition 131 and the first light-emitting element P in the next light-emitting partition 131 are disconnected based on the connected path selector CM. This method can make every 3 light-emitting elements P in the same light-emitting element group 13 correspond to a light-emitting partition 131. These 3 light-emitting elements P can be synchronously controlled for light emission, and different light-emitting partitions 131 can be independently controlled for light emission.

[0079] Reference Figure 13 As shown, Figure 13Another schematic diagram of the principle of light-emitting partition provided by the embodiment of the present application, in combination with Figure 8 and Figure 13 As shown, in this method, for the same light-emitting element group 13, on the series path, every 2 light-emitting elements P form a light-emitting partition 131. On the series path, two adjacent light-emitting elements P in the same light-emitting partition 131 are both connected in series and conducted based on the connected path selector CM; among two adjacent light-emitting partitions 131, the last light-emitting element P in the previous light-emitting partition 131 and the first light-emitting element P in the subsequent light-emitting partition 131 are disconnected based on the connected path selector CM. This method can enable every 2 light-emitting elements P in the same light-emitting element group 13 to correspond to a light-emitting partition 131, and these 2 light-emitting elements P can be controlled to emit light synchronously, and different light-emitting partitions 131 can be independently controlled to emit light.

[0080] Refer to Figure 14 As shown, Figure 14 Another schematic diagram of the principle of light-emitting partition provided by the embodiment of the present application, in combination with Figure 8 and Figure 14 As shown, in this method, for the same light-emitting element group 13, on the series path, every 1 light-emitting element P forms a light-emitting partition 131. On the series path, any two adjacent light-emitting elements P are disconnected based on the connected path selector CM. This method can enable every 1 light-emitting element P in the same light-emitting element group 13 to correspond to a light-emitting partition 131, and each light-emitting element P, as a light-emitting partition 131, can be independently controlled to emit light.

[0081] Based on the method shown in Figures 9 - 14 It can be known that by adopting the circuit structure shown in Figure 8 , when all the path selectors CM in the light-emitting element group 13 are in different conduction state combinations, the light-emitting element group 13 can have different light-emitting partitions 131. By simply controlling the conduction states of each path selector CM, simple control of the light-emitting partitions 131 of the light-emitting panel 10 can be achieved.

[0082] Based on the above embodiments, another embodiment of the present application further provides a backlight module, and the structure of the backlight module can be as shown in Figure 15 As shown.

[0083] Refer to Figure 15 As shown, Figure 15 A schematic diagram of the structure of a backlight module provided by the embodiment of the present application, the backlight module includes:

[0084] The light-emitting panel 10 in any one of the above embodiments;

[0085] A light guide plate 20 located on the light-emitting side of the light-emitting panel 10.

[0086] In the embodiment of the present application, the backlight module adopts the light-emitting panel 10 provided in the above embodiment, and can realize flexible light-emitting zone adjustment of the backlight module based on the path selector CM.

[0087] To improve the backlight emission efficiency, the backlight module further includes a reflective layer. The reflective layer can be arranged on the light-emitting panel 10. At this time, the reflective layer can be a reflective ink layer or a reflective metal layer. In other ways, the reflective layer can also be arranged between the light-emitting panel 10 and the light guide plate 20, such as on the surface of the light guide plate 20 facing the light-emitting panel 10. In this way, the light guide plate 20 can be reused as the carrier substrate of the reflective layer, and there is no need to separately set the carrier substrate of the reflective layer. When the reflective layer is located between the light-emitting panel 10 and the light guide plate 20, the reflective layer is provided with a plurality of light-transmitting windows corresponding one-to-one to the light-emitting elements P in the light-emitting panel 10.

[0088] The light-emitting panel 10 provided in the embodiment of the present application is not limited to being used in a backlight module, and can be used in any electronic product that requires local light emission, such as a lighting device or an advertising light board that requires local light emission control. The application scenario corresponding to the light-emitting panel 10 in the embodiment of the present application is not limited.

[0089] Based on the light-emitting panel and the backlight module provided in the above embodiment, another embodiment of the present application further provides a control method for a backlight module. The control method is as Figure 16 shown.

[0090] Referring to Figure 16 shown, Figure 16 is a schematic flowchart of a control method for a backlight module provided in an embodiment of the present application. Combining Figure 16 and the accompanying drawings of the light-emitting panel 10 in the above embodiment, the control method includes:

[0091] Step S11: Based on the control signal Ctr, set the conduction state of the path selector CM in the light-emitting panel 10 to divide the light-emitting array 11 to form a plurality of light-emitting zones 131.

[0092] Step S12: Sequentially scan the light-emitting elements P in each row of the display array 11 based on the scanning timing to control the light-emitting states of the light-emitting elements P in each light-emitting zone 131.

[0093] In the control method for the backlight module provided in the embodiment of the present application, a plurality of required light-emitting zones 131 can be formed by controlling the conduction state of the path selector CM in the light-emitting panel 10, so as to realize flexible adjustment of the backlight zones.

[0094] The following further explains the principle of the light-emitting zone 131 shown respectively. Figures 9 - 14 respectively.

[0095] Referring to Figure 17As shown, Figure 17 is a circuit structure diagram of a light-emitting element group provided by an embodiment of the present application. Combining Figure 8 and Figure 17 As shown, on the series path, when any two adjacent light-emitting elements P are connected in series through a path selector CM, if a light-emitting element subgroup R has N light-emitting elements P, then M*N - 1 path selectors CM are required to connect the M*N light-emitting elements P in the light-emitting element group 13 in series one by one. On the series path, it is assumed that the M*N - 1 path selectors CM are successively the first path selector CM1 to the nth path selector CM n , where n = M*N - 1. In Figure 8 and Figure 17 As shown in the figure, taking a column of light-emitting elements P as a light-emitting element subgroup R, with M = 2 and N > 4 as an example for illustration.

[0096] On the series path, every 6 light-emitting elements P form a light-emitting partition 131. Combining Figure 4 , Figure 8 , Figure 9 and Figure 17 As shown, the control signals Ctr and conduction states of the respective path selectors CM in the light-emitting element group 13 can be as shown in Table 1 below.

[0097] Table 1

[0098] CM <![CDATA[CM1]]> <![CDATA[CM2]]> <![CDATA[CM3]]> <![CDATA[CM4]]> <![CDATA[CM5]]> <![CDATA[CM6]]> <![CDATA[CM7]]> <![CDATA[CM8]]> <![CDATA[CM9]]> <![CDATA[CM 10 > <![CDATA[CM 11 > <![CDATA[CM 12 > Ctr H H H H H L H H H H H L Status AB AB AB AB AB AC AB AB AB AB AB AC

[0099] It can be seen from Table 1 that among the respective path selectors CM connected to the same light-emitting element group 13, the control signals Ctr input to the 6a-th path selector CM 6a are all low level L, and the control signals Ctr input to the other respective path selectors CM are all high level H. a is a positive integer not greater than n / 6. Therefore, the 6a-th path selector CM 6a all have the first connection end A and the third connection end C conducting, and the other respective path selectors CM all have the first connection end A and the second connection end B conducting, so that in the same light-emitting element group 13, every 6 light-emitting elements P form a light-emitting partition 131.

[0100] When every 6 light-emitting elements P in the light-emitting panel 10 form a light-emitting partition 131, the timing of the scan signal Scan and the control signal Ctr can be as Figure 18 shown.

[0101] Referring to Figure 18 as shown, Figure 18A timing diagram provided by an embodiment of the present application. In the same light-emitting element group 13, it is set that there are N rows of light-emitting elements P, and the scanning lines S connected to the N rows of light-emitting elements P respectively input scanning signals Scan1 to scanning signal ScanN, and the path selectors CM connected to the N rows of light-emitting elements P respectively input control signals Ctr1 to control signal CtrN. Figure 18 Only scanning signals Scan1 to scanning signal Scan4 and control signals Ctr1 to control signal Ctr6 are shown in Figure 18 . As described above, only the 6a path selector CM 6a needs to input a control signal Ctr that is all low level L, so that every 6 light-emitting elements P can be used as a light-emitting partition 131.

[0102] On the series path, every 5 light-emitting elements P are used as a light-emitting partition 131. Combining Figure 4 、 Figure 8 、 Figure 10 and Figure 17 shown, the control signals Ctr and conduction states of the respective path selectors CM in the light-emitting element group 13 can be as shown in Table 2 below.

[0103] Table 2

[0104] CM <![CDATA[CM1]]> <![CDATA[CM2]]> <![CDATA[CM3]]> <![CDATA[CM4]]> <![CDATA[CM5]]> <![CDATA[CM6]]> <![CDATA[CM7]]> <![CDATA[CM8]]> <![CDATA[CM9]]> <![CDATA[CM 10 > <![CDATA[CM 11 > <![CDATA[CM 12 > Ctr H H H H L H H H H L H H Status AB AB AB AB AC AB AB AB AB AC AB AB

[0105] It can be seen from Table 2 that among the respective path selectors CM connected to the same light-emitting element group 13, the 5b path selector CM 5b inputs a control signal Ctr that is all low level L, and the control signals Ctr input by the other respective path selectors CM are all high level H. b is a positive integer not greater than n / 5. Therefore, the 5b path selector CM 5b has its first connection terminal A and third connection terminal C conducting, and the other respective path selectors CM have their first connection terminal A and second connection terminal B conducting, so that in the same light-emitting element group 13, every 5 light-emitting elements P can be used as a light-emitting partition 131.

[0106] On the series path, every 4 light-emitting elements P are used as a light-emitting partition 131. Combining Figure 4 、 Figure 8 、 Figure 11 and Figure 17 shown, the control signals Ctr and conduction states of the respective path selectors CM in the light-emitting element group 13 can be as shown in Table 3 below.

[0107] Table 3

[0108] CM <![CDATA[CM1]]> <![CDATA[CM2]]> <![CDATA[CM3]]> <![CDATA[CM4]]> <![CDATA[CM5]]> <![CDATA[CM6]]> <![CDATA[CM7]]> <![CDATA[CM8]]> <![CDATA[CM9]]> <![CDATA[CM 10 > <![CDATA[CM 11 > <![CDATA[CM 12 > Ctr H H H L H H H L H H H L Status AB AB AB AC AB AB AB AC AB AB AB AC

[0109] As can be seen from Table 3, among the respective path selectors CM connected to the same light-emitting element group 13, for the 4c-th path selector CM 4c the input control signal Ctr is at a low level L, and the input control signals Ctr of the other respective path selectors CM are at a high level H. c is a positive integer not greater than n / 4. Therefore, for the 4c-th path selector CM 4c the first connection terminal A and the third connection terminal C are both conducting, and for the other respective path selectors CM, the first connection terminal A and the second connection terminal B are both conducting. Thus, in the same light-emitting element group 13, every 4 light-emitting elements P form a light-emitting partition 131.

[0110] On the series path, every 3 light-emitting elements P form a light-emitting partition 131. Combining Figure 4 、 Figure 8 、 Figure 12 and Figure 17 as shown, the control signals Ctr and the conduction states of the respective path selectors CM in the light-emitting element group 13 can be as shown in Table 4 below.

[0111] Table 4

[0112] CM <![CDATA[CM1]]> <![CDATA[CM2]]> <![CDATA[CM3]]> <![CDATA[CM4]]> <![CDATA[CM5]]> <![CDATA[CM6]]> <![CDATA[CM7]]> <![CDATA[CM8]]> <![CDATA[CM9]]> <![CDATA[CM 10 > <![CDATA[CM 11 > <![CDATA[CM 12 > Ctr H H L H H L H H L H H L Status AB AB AC AB AB AC AB AB AC AB AB AC

[0113] As can be seen from Table 4, among the respective path selectors CM connected to the same light-emitting element group 13, for the 3d-th path selector CM 3d the input control signal Ctr is at a low level L, and the input control signals Ctr of the other respective path selectors CM are at a high level H. d is a positive integer not greater than n / 3. Therefore, for the 3d-th path selector CM 3d the first connection terminal A and the third connection terminal C are both conducting, and for the other respective path selectors CM, the first connection terminal A and the second connection terminal B are both conducting. Thus, in the same light-emitting element group 13, every 3 light-emitting elements P form a light-emitting partition 131.

[0114] On the series path, every 2 light-emitting elements P form a light-emitting partition 131. Combining Figure 4 、 Figure 8 、 Figure 13 and Figure 17 as shown, the control signals Ctr and the conduction states of the respective path selectors CM in the light-emitting element group 13 can be as shown in Table 5 below.

[0115] Table 5

[0116] CM <![CDATA[CM1]]> <![CDATA[CM2]]> <![CDATA[CM3]]> <![CDATA[CM4]]> <![CDATA[CM5]]> <![CDATA[CM6]]> <![CDATA[CM7]]> <![CDATA[CM8]]> <![CDATA[CM9]]> <![CDATA[CM 10 > <![CDATA[CM 11 > <![CDATA[CM 12 > Ctr H L H L H L H L H L H L Status AB AC AB AC AB AC AB AC AB AC AB AC

[0117] As can be seen from Table 5, among the respective path selectors CM connected to the same light-emitting element group 13, for the 2e-th path selector CM 2eThe input control signal Ctr is at low level L, and the control signals Ctr input to each of the other path selectors CM are at high level H. e is a positive integer not greater than n / 2. Therefore, for the 2e-th path selector CM 2e the first connection terminal A and the third connection terminal C are conducting, and for each of the other path selectors CM, the first connection terminal A and the second connection terminal B are conducting. Thus, in the same light-emitting element group 13, every two light-emitting elements P form a light-emitting partition 131.

[0118] On the series path, each light-emitting element P forms a light-emitting partition 131. Combining Figure 4 、 Figure 8 、 Figure 14 and Figure 17 as shown, the control signals Ctr and the conduction states of the path selectors CM in the light-emitting element group 13 can be as shown in Table 6 below.

[0119] Table 6

[0120] CM <![CDATA[CM1]]> <![CDATA[CM2]]> <![CDATA[CM3]]> <![CDATA[CM4]]> <![CDATA[CM5]]> <![CDATA[CM6]]> <![CDATA[CM7]]> <![CDATA[CM8]]> <![CDATA[CM9]]> <![CDATA[CM 10 > <![CDATA[CM 11 > <![CDATA[CM 12 > Ctr L L L L L L L L L L L L Status AC AC AC AC AC AC AC AC AC AC AC AC

[0121] As can be seen from Table 6, the control signals Ctr input to the path selectors CM connected to the same light-emitting element group 13 are all at low level L. Therefore, for each of the path selectors CM, the first connection terminal A and the third connection terminal C are conducting. Thus, in the same light-emitting element group 13, each light-emitting element P forms a light-emitting partition 131.

[0122] In Figure 1 、 Figure 2 、 Figures 7 - 14 and Figure 17 in the above-described embodiments, the light-emitting element subgroup R is taken as a whole column of light-emitting elements P for illustration. For example, the light-emitting element subgroup R can also be a whole row of light-emitting elements P. Rotating the structure shown in Figure 1 、 Figure 2 、 Figures 7 - 14 and Figure 17 by 90° in the plane is equivalent to the light-emitting element subgroup R being a whole row of light-emitting elements P. This application embodiment will not illustrate this again.

[0123] As described above, in some ways of the embodiments of this application, as Figure 19 shown, at least one light-emitting element subgroup R is at least part of a column of light-emitting elements P.

[0124] Referring to Figure 19 shown,[[]]END]] Figure 19 is a schematic structural diagram of another light-emitting panel provided by the embodiment of this application. In this way, the number of sub-light-emitting element subgroups R in at least two light-emitting element groups 13 is different, and at least one light-emitting element subgroup R is at least part of a column of light-emitting elements P.

[0125] In Figure 19 it, two adjacent light-emitting element groups 13 in the row direction are shown, and the two light-emitting element groups 13 are a first light-emitting element group 13a and a second light-emitting element group 13b respectively.

[0126] The first light-emitting element group 13a includes four light-emitting element subgroups R. The first two light-emitting element subgroups R are light-emitting elements P in the first column and the second column respectively, and the two light-emitting element subgroups R are both an array of light-emitting elements P. The last two light-emitting element subgroups R are the first two light-emitting elements P in the third column and the first two light-emitting elements P in the fourth column respectively, and the two light-emitting element subgroups R are both partial of a column of light-emitting elements P.

[0127] The second light-emitting element subgroup 13b includes two light-emitting element subgroups R. One light-emitting element subgroup is the other light-emitting elements P in the third column except for the first two light-emitting elements P, and the other light-emitting element subgroup is the other light-emitting elements P in the fourth column except for the first two light-emitting elements P.

[0128] When a light-emitting element subgroup R is at least part of a column of light-emitting elements P, any one or more light-emitting elements in this column of light-emitting elements P can be set as this light-emitting element subgroup R based on requirements, not limited to Figure 19 the shown manner.

[0129] As described above, in some ways of the embodiments of the present application, at least one light-emitting element subgroup R can also be set as at least part of a row of light-emitting elements P. When at least one light-emitting element subgroup R in the display panel is at least part of a column of light-emitting elements P, rotating the light-emitting array 90° in the plane can make at least one light-emitting element subgroup R in the display panel be at least part of a column of light-emitting elements P, and the embodiments of the present application will not illustrate this anymore.

[0130] In this specification, each embodiment is described in a progressive, or parallel, or a combination of progressive and parallel manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts among the embodiments can be referred to each other. For the backlight module and its control method disclosed in the embodiments, since it corresponds to the light-emitting panel disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the relevant parts of the light-emitting panel of the method.

[0131] It should be noted that in the description of this application, it should be understood that the descriptions of the drawings and embodiments are illustrative rather than restrictive. The same reference numerals throughout the embodiments of the specification identify the same structures. Additionally, for the sake of understanding and ease of description, the thickness of some layers, films, panels, regions, etc. may be exaggerated in the drawings. At the same time, it can be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, the element can be directly on the other element or there may be intermediate elements. Additionally, "on" means positioning the element on or under another element, but does not inherently mean positioning on the upper side of another element according to the direction of gravity.

[0132] The orientation or positional relationship indicated by terms such as "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be intermediate components present simultaneously.

[0133] It should also be noted that in this context, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including", or any other variation thereof is intended to cover non-exclusive inclusion, such that an article or device comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements that are inherent to such article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the article or device comprising the above elements.

[0134] The above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A light-emitting panel, characterized in that, Comprising: A light-emitting array, the light-emitting array including a plurality of light-emitting elements arranged in an array; The light-emitting array is divided into a plurality of light-emitting element groups, each light-emitting element group including at least one light-emitting element subgroup, the light-emitting element subgroup being at least a part of a column of the light-emitting elements or at least a part of a row of the light-emitting elements; the arrangement directions of the light-emitting elements in different light-emitting element subgroups are the same; Wherein, in the same light-emitting element group, the light-emitting elements are connected in series in sequence, and on the series path, at least two adjacent light-emitting elements are connected in series through a path selector; The path selector includes: a first connection end, a second connection end, a third connection end, and a control end; For two light-emitting elements connected in series through the path selector, the cathode of one light-emitting element is connected to the first connection end, and the anode of the other light-emitting element is connected to the second connection end; the third connection end is used for inputting a negative power supply voltage; Wherein, the path selector is used to select the conduction between the first connection end and the second connection end, or select the conduction between the first connection end and the third connection end based on the control signal of the control end.

2. The light-emitting panel according to claim 1, wherein, The path selector includes: A PMOS switch transistor, the gate of the PMOS switch transistor is connected to the control end, the first pole of the PMOS switch transistor is connected to the first connection end, and the second pole of the PMOS is connected to the third connection end; An NMOS switch transistor, the gate of the NMOS switch transistor is connected to the control end, the first pole of the NMOS switch transistor is connected to the first connection end, and the second pole of the NMOS switch transistor is connected to the second connection end.

3. The light-emitting panel according to claim 1, characterized in that, The light-emitting panel includes: A substrate; A driving circuit disposed on the substrate, the light-emitting array being located on the side of the driving circuit away from the substrate, and the driving circuit is connected to the anode of the light-emitting element; Wherein, the path selector is on the same layer as the driving circuit.

4. The light-emitting panel according to claim 3, characterized in that, The driving circuit is connected to the light-emitting elements one by one; The driving circuit includes: A power supply terminal for accessing a positive power supply voltage; A scanning terminal for accessing a scanning signal; A data terminal for accessing a data signal; An output terminal for connecting to the anode of the corresponding light-emitting element.

5. The light-emitting panel according to claim 4, wherein In the driving circuits connected to the light-emitting elements in the same row, the scanning terminals are connected to the same scanning line, and the scanning line is used for inputting the scanning signal; the extending direction of the scanning line is parallel to the row direction; In the driving circuits connected to the light-emitting elements in the same column, the data terminals are connected to the same data line, and the data line is used for inputting the data signal; the extending direction of the data line is parallel to the column direction.

6. The light-emitting panel according to claim 1, wherein The plurality of light-emitting elements in the light-emitting element subgroup are arranged in sequence in a first direction; The light-emitting elements in two adjacent light-emitting element groups in a second direction are open-circuited, and the second direction intersects with the first direction.

7. The light-emitting panel according to claim 1, characterized in that, Each light-emitting element subgroup is either a row of light-emitting elements or a column of light-emitting elements; there are N light-emitting elements arranged in sequence in the first direction in the light-emitting element subgroup, and these N light-emitting elements are the 1st light-emitting element to the Nth light-emitting element in sequence; In a second direction, there are M light-emitting element subgroups arranged in sequence in the light-emitting element group, and the M light-emitting element subgroups are the 1st light-emitting element subgroup to the Mth light-emitting element subgroup in sequence; Both M and N are positive integers greater than 1; the second direction intersects the first direction; In the same light-emitting element group, the cathode of the jth light-emitting element in the ith light-emitting element subgroup is connected to the anode of the jth light-emitting element in the (i + 1)th light-emitting element subgroup through one of the path selectors; the cathode of the qth light-emitting element in the Mth light-emitting element subgroup is connected to the anode of the (q + 1)th light-emitting element in the 1st light-emitting element subgroup through one of the path selectors; i is a positive integer less than M, j is a positive integer not greater than N, and q is a positive integer less than N.

8. The light-emitting panel according to claim 7, wherein, In the same light-emitting element group, when all the path selectors make the two connected light-emitting elements open circuits, each of the light-emitting elements can be independently controlled for light emission; Or, in the same light-emitting element group, when at least one of the path selectors makes the two connected light-emitting elements conduct, the two light-emitting elements can be synchronously controlled for light emission.

9. A backlight module, characterized in that, Comprising: The light-emitting panel according to any one of claims 1-8; A light guide plate located on the light-emitting side of the light-emitting panel.

10. A control method for a backlight module as described in claim 9, characterized in that, Comprising: Based on a control signal, set the conduction state of the path selectors in the light-emitting panel to divide the light-emitting area of the light-emitting array to form a plurality of light-emitting partitions; Scan the light-emitting elements in each row of the display array in sequence based on a scanning timing to control the light-emitting states of the light-emitting elements in each light-emitting partition.

Images