CN110010083B

CN110010083B - Display device

Info

Publication number: CN110010083B
Application number: CN201910191443.6A
Authority: CN
Inventors: 蔡政嵚; 郭文豪; 王博文; 蔡东宪
Original assignee: Qisda Suzhou Co Ltd; Qisda Corp
Current assignee: Qisda Suzhou Co Ltd; Qisda Corp
Priority date: 2019-03-14
Filing date: 2019-03-14
Publication date: 2021-01-05
Anticipated expiration: 2039-03-14
Also published as: CN110010083A

Abstract

The invention provides a display device, which comprises a display panel and a backlight module. The backlight module is configured opposite to the display panel and comprises a driver, a power supply, a first light source region, a second light source region, a first switch and a second switch. The power supply is used for providing current. The first light source region and the second light source region are connected in parallel with the driver. The first switch is electrically coupled to the first light source region and the power supply and is used for allowing or prohibiting current to be transmitted to the first light source region. The second switch is electrically coupled to the second light source region and the power supply, and is used for allowing or prohibiting current from being transmitted to the second light source region.

Description

Display device

Technical Field

The present invention relates to a display device, and more particularly, to a display device having a switch.

Background

At present, the display device gradually evolves towards the trend of large size, high contrast, high reaction speed and the like. In order to provide sufficient backlight brightness for large-sized display devices, the backlight module of the display device is mostly designed in an array manner by adopting a direct type backlight module and a large number of light source regions. However, the array of a large number of light source regions usually requires several connectors (connectors), a complicated layout of traces, and multiple assembly processes. Therefore, it is an endeavor of those skilled in the art to provide a new display device to improve the above-mentioned problems.

Disclosure of Invention

The present invention is directed to a display device that can solve the above-mentioned problems.

In order to achieve the above object, the present invention provides a display device, which includes a display panel and a backlight module; the backlight module is configured corresponding to the display panel, and the backlight module comprises:

a driver;

a power supply for supplying current;

a first light source region and a second light source region coupled in parallel to the driver;

a first switch electrically coupled to the first light source region and the power supply, the first switch being configured to allow or prohibit the current to be transmitted to the first light source region; and

a second switch electrically coupled to the second light source region and the power supply, the second switch being configured to allow or prohibit the current to be transmitted to the second light source region.

Preferably, the backlight module comprises a first circuit board, and the first light source region and the second light source region are electrically coupled to the first circuit board; the backlight module also comprises a second circuit board, and the first switch, the second switch and the driver are electrically coupled to the second circuit board; the display device further includes a single connector connecting the first circuit board and the second circuit board; wherein the first circuit board and the second circuit board are electrically coupled only by the single connector.

Preferably, the first light source region and the second light source region respectively include N light emitting element groups, where N is a positive integer equal to or greater than 1; the display device further includes a connector including a plurality of first contacts electrically coupled to the first light source region, the second light source region, the first switch and the second switch, the number of the first contacts being equal to a sum of 2 and N.

Preferably, the power supply further comprises a connector, wherein the connector comprises two first power supply contacts; the first light source region and the second light source region comprise a first input end and a second input end respectively; the first input ends of the first light source region and the second light source are respectively and electrically coupled to one of the two first power contacts, and the second input ends of the first light source region and the second light source are respectively and electrically coupled to the other of the two first power contacts.

Preferably, the connector further comprises N first control contacts, wherein N is a positive integer equal to or greater than 1; the first light source region and the second light source region respectively comprise N light emitting element groups, the N light emitting element groups of the first light source region are respectively and electrically coupled to the N first control contacts, and the N light emitting element groups of the second light source region are respectively and electrically coupled to the N first control contacts.

Preferably, the driver includes N driving contacts, the first light source region and the second light source region respectively include N light emitting element groups, the N light emitting element groups of the first light source region are respectively electrically coupled to the N driving contacts, and the N light emitting element groups of the second light source region are respectively electrically coupled to the N driving contacts, where N is a positive integer equal to or greater than 1.

Preferably, the first light source region and the second light source region respectively include N light emitting element groups, where N is a positive integer equal to or greater than 1; the display device also comprises a first circuit board, wherein the first circuit board comprises a plurality of second contacts; the first light source region and the second light source region are electrically coupled to the first circuit board, and the number of the second contacts is equal to the sum of 2 and N.

Preferably, the power supply further comprises a first circuit board, wherein the first circuit board comprises two second power supply contacts; the first light source region and the second light source region are electrically coupled to the first circuit board, and both comprise a first input end and a second input end; the first input ends of the first light source region and the second light source region are respectively and electrically coupled to one of the two second power contacts, and the second input ends of the first light source region and the second light source region are respectively and electrically coupled to the other of the two second power contacts.

Preferably, the circuit board further comprises a first circuit board, wherein the first circuit board comprises N second control contacts, wherein N is a positive integer equal to or greater than 1; the first light source region and the second light source region are electrically coupled to the first circuit board, the first light source region and the second light source region respectively include N light emitting element sets, the N light emitting element sets of the first light source region are electrically coupled to the N second control contacts respectively, and the N light emitting element sets of the second light source region are electrically coupled to the N second control contacts respectively.

Preferably, the first light source region and the second light source region respectively include N light emitting element groups, where N is a positive integer equal to or greater than 1; the display device further includes: a second circuit board including a plurality of third contacts; the first light source region and the second light source region are electrically coupled to the second circuit board, and the number of the third contacts is equal to the sum of 2 and N.

Preferably, the power supply further comprises a second circuit board, wherein the second circuit board comprises two third power supply contacts; the driver is electrically coupled to the second circuit board, and the first light source region and the second light source region both comprise a first input end and a second input end; the first input ends of the first light source region and the second light source region are electrically coupled to one of the two third power source contacts, respectively, and the second input ends of the first light source region and the second light source region are electrically coupled to the other of the two third power source contacts, respectively.

Preferably, the circuit board further comprises a second circuit board, wherein the second circuit board comprises N third control contacts, wherein N is a positive integer equal to or greater than 1; the first light source region and the second light source region are electrically coupled to the second circuit board, the first light source region and the second light source region respectively include N light emitting element sets, the N light emitting element sets of the first light source region are electrically coupled to the N third control contacts respectively, and the N light emitting element sets of the second light source region are electrically coupled to the N third control contacts respectively.

a driver;

a power supply for supplying current;

m light source regions connected in parallel to the driver, wherein M is a positive integer equal to or greater than 1; and

m switches, each of the switches is electrically coupled to the corresponding light source region and the power supply, and each of the switches is used for allowing or prohibiting the current to be transmitted to the corresponding light source region.

Preferably, each of the light source regions includes N light emitting element groups, where N is a positive integer equal to or greater than 1; the display device further includes:

the connector comprises a plurality of first contacts, the plurality of first contacts are respectively and electrically coupled with the M light source regions and the M switches, and the number of the plurality of first contacts is the sum of M and N.

Compared with the prior art, the invention adopts a plurality of groups of light source areas which are connected in parallel, the corresponding light source areas are selectively driven by a plurality of switches with the same number as the light source areas, and the on-off and/or brightness of each light source in each light source area are adjusted by the gating of the driver, thereby reducing the number of wires and connectors used, reducing the cost and the assembly time and being beneficial to improving the yield of finished products.

Drawings

Fig. 1 is a schematic view illustrating a display device according to an embodiment of the invention.

Fig. 2 is an exploded view of the backlight module shown in fig. 1.

Fig. 3 is a combination diagram of the backlight module shown in fig. 2.

Detailed Description

In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.

Referring to fig. 1 to 3, fig. 1 is a schematic view illustrating a display device 100 according to an embodiment of the invention, fig. 2 is an exploded view illustrating a backlight module 120 of fig. 1, and fig. 3 is an assembled view illustrating the backlight module 120 of fig. 2. The display device 100 is, for example, a television, a computer screen, or other electronic devices capable of displaying images.

The display device 100 includes a display panel 110 and a backlight module 120. The display panel 110 is, for example, a liquid crystal display panel or other display panel that requires a light source to display a screen. As shown in fig. 1, the backlight module 120 is, for example, a direct-type backlight module, but may also be a side-type backlight module.

The backlight module 120 is disposed opposite to the display panel 110. The backlight module 120 includes a driver 121, a power supply 122, a controller 123, a first circuit board 124, a second circuit board 125, a connector 126, M light source regions, and M switches. M is a positive integer equal to or greater than 1. In the present embodiment, the M light source regions are, for example, a first light source region B1, a second light source region B2, a third light source region B3 and a fourth light source region B4, and the M switches are, for example, a first switch S1, a second switch S2, a third switch S3 and a fourth switch S4. In another embodiment, the number of the light source regions and the number of the switches of the backlight module 120 may be two, for example, the third light source region B3 and the fourth light source region B4 may be omitted, and the third switch S3 and the fourth switch S4 may be omitted. In other embodiments, the number of the light source regions and the number of the switches of the backlight module 120 may be three or more. In other embodiments, the M light source regions may be arranged in an n x M array, where n and M are positive integers equal to or greater than 1, and n and M may be the same or different values. In addition, the number of the light source regions and the number of the switches are not limited in the embodiments of the present invention.

The power supply 122 is used for providing a current L1. The first, second, third and fourth light source regions B1, B2, B3 and B4 are connected in parallel to the driver 121. Each switch (e.g., S1-S4) is electrically coupled to the corresponding light source region and the power supply 122 and is configured to allow or prohibit the current L1 to pass to the corresponding light source region. For example, the first switch S1 is electrically coupled to the first light source region B1 and the power supply 122 and configured to allow or prohibit the current L1 to pass to the first light source region B1. The second switch S2 is electrically coupled to the second light source region B2 and the power supply 122 and is used for allowing or prohibiting the current L1 to pass to the second light source region B2. The third switch S3 is electrically coupled to the third light source region B3 and the power supply 122 and configured to allow or prohibit the current L1 to pass to the third light source region B3. The fourth switch S4 is electrically coupled to the fourth light source region B4 and the power supply 122 and configured to allow or prohibit the current L1 to pass to the fourth light source region B4. Thus, when at least one of the switches is turned on simultaneously or non-simultaneously, the current L1 flows to the corresponding at least one light source region to control the at least one light source region to provide light to the display panel 110, thereby achieving specific optical effects, such as improving contrast.

In one embodiment, the power supply 122 is, for example, a direct current to direct current (DC to DC) converter, which can convert the DC power outside the backlight module 120 into DC power suitable for the operation of the M light source regions of the backlight module 120.

The controller 123 may control the M switches S1 to S4 to be turned on or off according to the display requirements of the display panel 110, and control whether the M light source regions B1 to B4 emit light and/or the light emitting characteristics through the driver 121.

As shown in fig. 2 and 3, the first light source region B1, the second light source region B2, the third light source region B3, the fourth light source region B4 and the first circuit board 124 may form a light emitting substrate 120a, and the driver 121, the power supply 122, the controller 123 and the second circuit board 125 may form a driving substrate 120B. The connector 126 connects the light-emitting substrate 120a and the driving substrate 120b, so that the controller 123 of the driving substrate 120b can control at least one of the light-emitting regions of the light-emitting substrate 120a to emit light or not and/or the light-emitting characteristics thereof through the connector 126.

As shown in fig. 2 and 3, each light source region includes N light emitting element groups. For example, the first light source region B1 includes N light emitting element groups B11, where N is a positive integer equal to or greater than 1, such as 16. Similarly, the second light source region B2 includes N light emitting element groups B21, the third light source region B3 includes N light emitting element groups B31, and the fourth light source region B4 includes N light emitting element groups B41. As shown in fig. 2 and fig. 3, each light emitting element group includes at least one light emitting element, such as a light emitting diode. The light emitting elements of the light emitting element group of each light source region may be formed or disposed on the first circuit board 124 by using a semiconductor process to form the light emitting substrate 120 a. Similarly, as shown in fig. 2 and 3, the first switch S1, the second switch S2, the third switch S3, the fourth switch S4, the driver 121, the power supply 122 and the controller 123 may be formed or disposed on the second circuit board 125 through a semiconductor process to form the driving substrate 120 b. In addition, in the driving substrate 120b, at least one of the first switch S1, the second switch S2, the third switch S3, the fourth switch S4, the driver 121, the power supply 122 and the controller 123 is a circuit (circuit) physical structure, and at least two of the first switch S1, the second switch S2, the third switch S3, the fourth switch S4, the driver 121, the power supply 122 and the controller 123 may be integrated into a single circuit physical structure.

As shown in fig. 2 and 3, each switch is electrically coupled to all the light emitting element sets corresponding to the light source regions. For example, the first switch S1 is electrically coupled to all of the light emitting element groups B11 of the first light source region B1 to provide a current L1 to the plurality of light emitting element groups B11 (when the first switch S1 is turned on). The second switch S2 is electrically coupled to all of the light emitting element groups B21 of the second light source region B2 to provide a current L1 to the plurality of light emitting element groups B21 (when the second switch S2 is turned on). The third switch S3 is electrically coupled to all the light emitting element groups B31 of the third light source region B3 to provide a current L1 to the plurality of light emitting element groups B31 (when the third switch S3 is turned on). The fourth switch S4 is electrically coupled to all of the light emitting element groups B41 of the fourth light source region B4 to provide a current L1 to the plurality of light emitting element groups B41 (when the fourth switch S4 is turned on).

As shown in fig. 2 and 3, the first circuit board 124 includes (N + M) second contacts, such as M second power contacts P21-P24 and N second control contacts C2_ 1-C2 _ 16. The number of the second contacts is equal to the sum of the number of the light source regions (i.e., M, which is illustrated as 4 in the present embodiment) and the number of the light emitting element groups of one light source region (i.e., N, which is illustrated as 16 in the present embodiment), for example, 20.

As shown in fig. 3, the (N + M) second contacts are electrically coupled to the first light source region B1, the second light source region B2, the third light source region B3, the fourth light source region B4, the first switch S1, the second switch S2, the third switch S3 and the fourth switch S4.

For the connection of the M second power contacts P21 to P24, each light source region has an input end of common potential, and the input points of all light emitting element groups of the light source region are common to (or common potential) the input end. In detail, as shown in fig. 2 and 3, the first light source region B1, the second light source region B2, the third light source region B3 and the fourth light source region B4 respectively include a first input terminal B1a, a second input terminal B2a, a third input terminal B3a and a fourth input terminal B4a, wherein the first input terminal B1a, the second input terminal B2a, the third input terminal B3a and the fourth input terminal B4a are electrically coupled to the second power source contacts P21 to P24, respectively. Thus, the current L1 can be supplied to the corresponding light source region through the second power supply contact.

For the connection of the N second control contacts C2_1 to C2_16, as shown in fig. 2 and 3, the N light emitting element groups of each light source region are electrically coupled to the N second control contacts C2_1 to C2_16, respectively. For example, N light emitting element groups B11 of the first light source region B1 are electrically coupled to N second control contacts C2_1 to C2_16, N light emitting element groups B21 of the second light source region B2 are electrically coupled to N second control contacts C2_1 to C2_16, N light emitting element groups B31 of the third light source region B3 are electrically coupled to N second control contacts C2_1 to C2_16, and N light emitting element groups B41 of the fourth light source region B4 are electrically coupled to N second control contacts C2_1 to C2_ 16.

In detail, as shown in fig. 2 and 3, one of the N light emitting element groups of each light source region is electrically coupled to the same one of the N second control contacts. For the light emitting element group B11 'of the first light source region B1, the light emitting element group B21' of the second light source region B2, the light emitting element group B31 'of the third light source region B3 and the light emitting element group B41' of the fourth light source region B4, the light emitting element group B11 ', the light emitting element group B21', the light emitting element group B31 'and the light emitting element group B41' are all electrically coupled to the same second control node (e.g., C2_ 1). Thus, the number of contacts of the first circuit board 124 may be reduced and/or the circuit layout of the first circuit board 124 may be simplified.

As shown in fig. 2 and 3, the connector 126 connects the first circuit board 124 and the second circuit board 125. The connector 126 includes (N + M) first contacts, such as M first power contacts P11-P14 and N first control contacts C1_ 1-C1 _ 16. The number of the first contacts is equal to the sum of the number of the light source regions (i.e., M, which is illustrated as 4 in the present embodiment) and the number of the light emitting element groups of one light source region (i.e., N, which is illustrated as 16 in the present embodiment), for example, 20.

When the connector 126 is connected to the first circuit board 124, as shown in fig. 3, the (N + M) first contact is electrically coupled to the first light source region B1, the second light source region B2, the third light source region B3, the fourth light source region B4, the first switch S1, the second switch S2, the third switch S3 and the fourth switch S4 through the second contact of the first circuit board 124.

For the connection of the M first power contacts P11 to P14, each light source region has a common input end, and the input points of all light emitting element groups of a light source region are common to (or common to) the input ends. For example, as shown in fig. 2 and 3, when the connector 126 is connected to the first circuit board 124, the first power contacts P11 to P14 of the connector 126 are electrically coupled to the first input terminal B1a of the first light source region B1, the second input terminal B2a of the second light source region B2, the third input terminal B3a of the third light source region B3, and the fourth input terminal B4a of the fourth light source region B4, respectively. Thus, the current L1 can be supplied to the corresponding light source region through the first power source contacts P11 to P14.

For the connection of the N first control contacts C1_1 to C1_16, as shown in fig. 2 and 3, the N light emitting element groups of each light source region are electrically coupled to the N first control contacts C1_1 to C1_16, respectively. For example, when the connector 126 is connected to the first circuit board 124, the N light emitting element groups B11 of the first light source region B1 are electrically coupled to the N first control contacts C1_1 to C1_16, respectively, the N light emitting element groups B21 of the second light source region B2 are electrically coupled to the N first control contacts C1_1 to C1_16, respectively, the N light emitting element groups B31 of the third light source region B3 are electrically coupled to the N first control contacts C1_1 to C1_16, respectively, and the N light emitting element groups B41 of the fourth light source region B4 are electrically coupled to the N first control contacts C1_1 to C1_16, respectively.

In detail, as shown in fig. 2 and 3, one of the N light emitting element groups of each light source region is electrically coupled to the same one of the N first control contacts, and for the light emitting element group B11 'of the first light source region B1, the light emitting element group B21' of the second light source region B2, the light emitting element group B31 'of the third light source region B3 and the light emitting element group B41' of the fourth light source region B4, when the connector 126 is connected to the first circuit board 124, the light emitting element group B11 ', the light emitting element group B21', the light emitting element group B31 'and the light emitting element group B41' are electrically coupled to the same first control contact. Thus, the number of contacts of the connector 126 may be reduced and/or the circuit layout of the connector 126 may be simplified. In this embodiment, the number of connectors 126 is only a single one because the number of wires and contacts is small. In other words, the first circuit board 124 and the second circuit board 125 are connected through only a single connector 126, but the embodiment of the invention is not limited thereto. Since the number of the connectors 126 is small, the number of processes for assembling the connectors 126 can be simplified or reduced.

As shown in fig. 2 and 3, the second circuit board 125 includes (N + M) third contacts, such as M third power contacts P31-P34 and N third control contacts C3_ 1-C3 _ 16. The number of the plurality of third contacts is equal to the sum of the number of the light source regions (i.e., M, which is illustrated as 4 in the present embodiment) and the number of the light emitting element groups of one light source region (i.e., N, which is illustrated as 16 in the present embodiment), for example, 20.

As shown in fig. 2 and 3, the third power contacts P31-P34 are electrically coupled to the first switch S1-the fourth switch S4, respectively. Thus, when the switch is turned on, the current L1 can be supplied to the corresponding light source region through the corresponding third power contact.

In addition, as shown in fig. 2 and 3, when the connector 126 connects the first circuit board 124 and the second circuit board 125, the (N + M) third contact is electrically coupled to the first light source region B1, the second light source region B2, the third light source region B3, the fourth light source region B4, the first switch S1, the second switch S2, the third switch S3 and the fourth switch S4 through the first contact of the connector 126 and the second contact of the first circuit board 124.

For the connection of the M third power contacts P31 to P34, each light source region has an input end of common potential, and the input points of all light emitting element groups of the light source region are common to (or common potential) the input end. For example, as shown in fig. 2 and 3, when the connector 126 connects the first circuit board 124 and the second circuit board 125, as shown in fig. 3, the third power contacts P31 to P34 are electrically coupled to the first input terminal B1a of the first light source region B1, the second input terminal B2a of the second light source region B2, the third input terminal B3a of the third light source region B3 and the fourth input terminal B4a of the fourth light source region B4 through the first power contacts P11 to P14 of the connector 126 and the second power contacts P21 to P24 of the first circuit board 124 respectively and electrically coupled to the third power contacts P31 to P34, respectively. Thus, the current L1 can be supplied to the corresponding light source region through the third power source contacts P31 to P34.

For the connection of the N third control contacts C3_1 to C3_16, as shown in fig. 2 and 3, the N light emitting element groups of each light source region are electrically coupled to the N third control contacts C3_1 to C3_16, respectively. For example, when the connector 126 connects the first circuit board 124 and the second circuit board 125, the N light emitting element groups B11 of the first light source region are electrically coupled to the N third control contacts C3_1 to C3_16, respectively, the N light emitting element groups B21 of the second light source region are electrically coupled to the N third control contacts C3_1 to C3_16, respectively, the N light emitting element groups B31 of the third light source region are electrically coupled to the N third control contacts C3_1 to C3_16, respectively, and the N light emitting element groups B41 of the fourth light source region B4 are electrically coupled to the N third control contacts C3_1 to C3_16, respectively.

In detail, as shown in fig. 2 and 3, one of the N light emitting element groups of each light source region is electrically coupled to the same one of the N third control contacts C3_1 to C3_ 16. With regard to the light emitting element group B11 'of the first light source region B1, the light emitting element group B21' of the second light source region B2, the light emitting element group B31 'of the third light source region B3 and the light emitting element group B41' of the fourth light source region B4, when the connector 126 connects the first circuit board 124 and the second circuit board 125, the light emitting element group B11 ', the light emitting element group B21', the light emitting element group B31 'and the light emitting element group B41' are all electrically coupled to the same third control contact. Thus, the number of contacts on the second circuit board 125 can be reduced and/or the circuit layout of the second circuit board 125 can be simplified.

As shown in fig. 2 and 3, the driver 121 includes N driving contacts D1 to D16. The N light emitting element groups of each light source region are electrically coupled to the N driving contacts D1-D16, respectively. For example, when the connector 126 connects the first circuit board 124 and the second circuit board 125, the N light emitting element groups B11 of the first light source region B1 are electrically coupled to the N driving contacts D1 to D16, respectively, the N light emitting element groups B21 of the second light source region B2 are electrically coupled to the N driving contacts D1 to D1, respectively, the N light emitting element groups B31 of the third light source region B3 are electrically coupled to the N driving contacts D1 to D16, respectively, and the N light emitting element groups B41 of the fourth light source region B4 are electrically coupled to the N driving contacts D1 to D16, respectively.

In detail, as shown in fig. 2 and 3, one of the N light emitting element groups of each light source region is electrically coupled to the same one of the N driving contacts. With regard to the light emitting element group B11 'of the first light source region B1, the light emitting element group B21' of the second light source region B2, the light emitting element group B31 'of the third light source region B3 and the light emitting element group B41' of the fourth light source region B4, when the connector 126 connects the first circuit board 124 and the second circuit board 125, the light emitting element group B11 ', the light emitting element group B21', the light emitting element group B31 'and the light emitting element group B41' are all electrically coupled to the same driving contact. Thus, the number of contacts of the driver 121 can be reduced and/or the circuit layout of the driver 121 can be simplified.

In summary, in an embodiment, a display device includes a display panel and a backlight module disposed opposite to each other. The backlight module comprises a driver, a power supply, M light source regions and M switches. The power supply is used for providing current. The M light source regions are connected in parallel with the driver, wherein M is a positive integer equal to or greater than 1. The M switches are electrically coupled to the corresponding light source regions and the power supply respectively, and are used for allowing or prohibiting current to be transmitted to the corresponding light source regions respectively. In one embodiment, the M light source regions respectively include N light emitting element groups, where N is a positive integer equal to or greater than 1. In another embodiment, the connector of the display device includes (M + N) first contacts electrically coupled to the N light emitting element sets of the M light source regions and the M switches, respectively. In another embodiment, the first circuit board of the display device includes (M + N) second contacts electrically coupled to the N light emitting element sets of the M light source regions and the M switches, respectively. In another embodiment, the second circuit board of the display device includes (M + N) third contacts electrically coupled to the N light emitting element groups of the M light source regions and the M switches, respectively.

The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.

Claims

1. A display device, comprising:

a display panel; and

the backlight module is configured corresponding to the display panel, and the backlight module comprises:

a driver;

a power supply for supplying current;

the first light source region and the second light source region are coupled to the driver in parallel and respectively comprise N light-emitting element groups, wherein N is a positive integer equal to or larger than 1;

a first switch electrically coupled to the first light source region and the power supply, the first switch being configured to allow or prohibit the current to be transmitted to the first light source region;

a second switch electrically coupled to the second light source region and the power supply, the second switch being configured to allow or prohibit the current to be transmitted to the second light source region;

the first circuit board is electrically coupled with the first light source region and the second light source region;

the first switch, the second switch and the driver are electrically coupled to the second circuit board; and

a single connector connecting the first circuit board and the second circuit board; the first circuit board and the second circuit board are electrically coupled through the single connector, the connector includes a plurality of first contacts electrically coupled to the first light source region, the second light source region, the first switch and the second switch, and the number of the first contacts is equal to the sum of 2 and N.

2. The display device of claim 1, further comprising:

the connector comprises two first power contacts;

the first light source region and the second light source region comprise a first input end and a second input end respectively; the first input ends of the first light source region and the second light source are respectively and electrically coupled to one of the two first power contacts, and the second input ends of the first light source region and the second light source are respectively and electrically coupled to the other of the two first power contacts.

3. The display device of claim 1, further comprising:

the connector comprises N first control contacts;

the N light emitting element groups of the first light source region are electrically coupled to the N first control contacts respectively, and the N light emitting element groups of the second light source region are electrically coupled to the N first control contacts respectively.

4. The display device according to claim 1, wherein the driver comprises N driving contacts, the N light emitting element groups of the first light source region are electrically coupled to the N driving contacts, respectively, and the N light emitting element groups of the second light source region are electrically coupled to the N driving contacts, respectively.

5. The display device of claim 1,

the first circuit board comprises a plurality of second contacts; the first light source region and the second light source region are electrically coupled to the first circuit board, and the number of the second contacts is equal to the sum of 2 and N.

6. The display device of claim 1, further comprising:

the first circuit board comprises two second power supply contacts; the first light source region and the second light source region comprise a first input end and a second input end respectively; the first input ends of the first light source region and the second light source region are respectively and electrically coupled to one of the two second power contacts, and the second input ends of the first light source region and the second light source region are respectively and electrically coupled to the other of the two second power contacts.

7. The display device of claim 1, further comprising:

the first circuit board comprises N second control contacts; the N light emitting element groups of the first light source region are electrically coupled to the N second control contacts respectively, and the N light emitting element groups of the second light source region are electrically coupled to the N second control contacts respectively.

8. The display device of claim 1,

the second circuit board comprises a plurality of third contacts; the first light source region and the second light source region are electrically coupled to the second circuit board, and the number of the third contacts is equal to the sum of 2 and N.

9. The display device of claim 1, further comprising:

the second circuit board comprises two third power supply contacts; the first light source region and the second light source region comprise a first input end and a second input end respectively; the first input ends of the first light source region and the second light source region are electrically coupled to one of the two third power source contacts, respectively, and the second input ends of the first light source region and the second light source region are electrically coupled to the other of the two third power source contacts, respectively.

10. The display device of claim 1, further comprising:

the second circuit board comprises N third control contacts;

the first light source region and the second light source region are electrically coupled to the second circuit board, the N light emitting element groups of the first light source region are electrically coupled to the N third control contacts, respectively, and the N light emitting element groups of the second light source region are electrically coupled to the N third control contacts, respectively.

11. A display device, comprising:

a display panel; and

a driver;

a power supply for supplying current;

m light source regions coupled in parallel to the driver, wherein M is a positive integer equal to or greater than 1, each of the light source regions includes N light emitting element groups, wherein N is a positive integer equal to or greater than 1;

m switches, each of which is electrically coupled to the corresponding light source region and the power supply, and is used for allowing or prohibiting the current to be transmitted to the corresponding light source region;

the M light source regions are electrically coupled to the first circuit board;

the M switches and the driver are electrically coupled to the second circuit board; and

a connector connecting the first circuit board and the second circuit board; wherein the first circuit board and the second circuit board are electrically coupled only through the connector; the connector comprises a plurality of first contacts which are respectively and electrically coupled with the M light source regions and the M switches, and the number of the first contacts is the sum of M and N.