TWI698685B - Light device and backlight module - Google Patents

Abstract

A light device and a backlight module thereof are provided. The light device comprises a circuit board and a plurality of light sources. The circuit board has a light source carrying area, the light source carrying area has a first side, and the first side extends along a first direction. The light sources dispose on the light source carrying area. The light sources are grouped by a plurality of light source groups, and the light sources in the light source groups distribute along the first direction. Each light source concatenates with another light source in other light source group to form a plurality of concatenations. The light source groups comprise a terminal light source group, and each concatenation corresponds to the light source disposes a negative electrode line on the circuit board and respectively connects to the terminal light source group. In the light source carrying area, not all of the negative electrode lines are simultaneously arranged side by side cross the first side direction.

Description

Light source device and backlight module

The invention relates to a light source device and a backlight module. Specifically, the present invention relates to an edge light source device and a backlight module containing the same.

Today's backlight module technology can be roughly divided into two types: direct-type and side-type; direct-type light-emitting backlight technology is to arrange multiple light sources (such as light-emitting diodes) in an array, placed behind the diffuser and liquid crystal display, directly Illuminate the liquid crystal display; the edge-type backlight technology puts the light source on one side of the liquid crystal display. After the light enters the light guide plate, the light guide plate guides the light to the back of the liquid crystal display evenly and distributed. The arrangement of the latter reduces the use of light sources, so the design of the display screen can be made lighter and thinner, and the production cost and energy consumption are also reduced. The side-lit backlight technology that places the light source on the four sides or the upper and lower sides of the liquid crystal display has been developed to place the light source on a long flexible circuit board under continuous technological evolution, forming a so-called light bar (light bar) .

In order to improve the resolution of the panel, the improvement of the brightness of the liquid crystal display screen is an important issue. However, taking light-emitting diodes as light sources as an example, due to the limitation of chip driving voltage, the increase in brightness will increase the parallel connection of light-emitting diodes, and the increase of light-emitting diodes in parallel will cause flexible circuit boards due to the increase in their circuits. The increase in board width prevents the backlight module from being thinned.

If you want to improve the problem of increasing the width of the circuit board, one of the solutions is to divide the single light strip in the backlight module into two; however, the single light strip is increased to two light strips, and the added light strips are corresponding to However, the number of connectors may increase the manufacturing cost and burden the design and manufacturing.

One object of the present invention is to improve the brightness of the light source device while reducing the increase in the width of the substrate.

Another object of the present invention is to improve the brightness of the backlight module while reducing the increase in the thickness of the module.

One embodiment of the present invention relates to a light source device. The light source device includes a substrate and a plurality of light sources. The substrate has a light source bearing area, the light source bearing area has a first side, and the first side extends along the first side direction. A plurality of light sources are arranged on the light source bearing area; the light sources are divided into a plurality of light source groups, and the light sources in the light source groups are distributed along the first side direction; each light source is connected in series with other light sources in the light source group to form a plurality of series connection; There is a terminal light source group in the middle, and each series connection corresponds to the negative line on the substrate to connect the light source in the terminal light source group respectively; the negative lines in the light source bearing area are not all side by side in the direction transverse to the first side.

Another aspect of the present invention relates to a light source device. The light source device includes a substrate, a first light source group, a second light source group, a first negative wire and a second negative wire. The substrate has a light source carrying area; the light source carrying area has a first side, and the first side extends along the first side direction. The first light source group is arranged on the light source bearing area and includes a first light source and a second light source. The second light source group is arranged on the light source bearing area, and includes a first B light source and a second B light source distributed along the first side direction. The first B light source is connected in series with the first A light source, and the second B light source is connected in series with the second A light source. The first negative wire is connected to the first B light source; the second negative wire is connected to the second B light source. The first negative wire and the second negative wire are not arranged side by side in the direction transverse to the first side in the light source bearing area.

Another aspect of the present invention relates to a backlight module. The backlight module includes a light source device and a casing. The light source device has a substrate and a plurality of light sources. The substrate has a light source bearing area, a first arm and a second arm. The light source carrying area has a first side, and the first side extends along the first side direction. The first arm extends from the first side; the second arm extends from the first side and is connected to the first arm at a different position on the first side. Part of the negative wire extends from the light source carrying area to the first arm, and part of the negative wire extends from the light source carrying area to the second arm. A plurality of light sources are arranged on the light source bearing area. The light sources are divided into a plurality of light source groups, and the light sources in the light source groups are distributed along the first side direction; each light source is connected in series with the light sources in other light source groups to form a plurality of series connections. The light source group has a terminal light source group, and each series connection corresponds to a negative line on the substrate to respectively connect the light sources in the terminal light source group. In the light source bearing area, the negative wires are not all arranged side by side in the direction transverse to the first side. The casing includes a bottom plate, and a first through hole, a second through hole, and a first communication hole connecting the first through hole and the second through hole are formed on the bottom plate. The base plate is set upright relative to the bottom plate, the first perforation is used for accommodating the first arm, and the second perforation is for accommodating the second arm.

With the shunt design of the present invention, the negative wires of the terminal light source group connected to the connecting portion are not all aligned at the same time in the direction transverse to the first side in the light source carrying area, so the width of the substrate can be reduced and the module can be thinned; in addition, The shunt design can also increase the brightness of the light source device without adding light bars and connectors.

FIG. 1 is a schematic diagram of a light source device according to an embodiment of the invention. As shown in FIG. 1, the light source device 100 includes a substrate 110 and a plurality of light sources 210. In a preferred embodiment, the light source device 100 is a light-emitting diode light bar of a light-emitting diode backlit liquid crystal display screen; wherein the substrate 110 is a flexible printed circuit board (Flexible Printed Circuit, FPC), which can be The design requires bending, and the light source 210 is a light emitting diode. The substrate 110 has a light source carrying area 115, the light source carrying area 115 has a first side 111, and the first side 111 extends along a first side direction 112; the light source 210 is disposed on the light source carrying area 115. In a preferred embodiment, the light source carrying area 115 is formed in a linear strip shape, and the first side 111 is its long side. However, in different embodiments, the light source carrying area 115 may also be a curved strip or other shapes.

As shown in FIG. 1 and as shown in FIG. 1, the light source 210 is divided into a plurality of light source groups 220, and each light source group 220 is preferably arranged on the light source carrying area 115 in sequence along the first side direction 112. Each light source group 220 has a terminal light source group 225; in this embodiment, the terminal light source group 225 is arranged near the end of the light source carrying area 115, and is the last group in each light source group 220; however, In different embodiments, the terminal light source group 225 may not be arranged at the end, but is a group of terminals in the serial sequence. The light sources 210 in the light source group 220 are distributed along the first side direction 112, and each light source 210 is connected in series with the light sources 210 in other light source groups to form a plurality of series connections. The aforementioned "distributed along the first side direction" includes, but is not limited to, the situation where the light sources 210 are arranged in a straight line and the line formed by the arrangement is parallel to the first side direction 112; in different embodiments, the light sources 210 may not be arranged in a straight line.

2 is a schematic diagram of the wiring of the negative wire of the light source device according to an embodiment of the invention. As shown in Figure 2, taking 60 light sources as an example, they can be divided into 12 light source groups, each group containing 5 light sources. Mark the light sources as L ₁ , L ₂ , L ₃ ... L _n-2 , L _n-1 , L _n in sequence; L ₁ to L ₅ are the first light source group 230, and L ₆ to L ₁₀ are Two light source groups 240,...L _n-4 ~L _n are terminal light source groups 225. The negative pole of the light source L ₁ is connected to the positive pole of the light source L ₆ by a wire, and then the negative pole of the light source L ₆ is connected to the positive pole of the light source L ₁₁ by a wire, and so on, after 12 light source groups 220 are connected to the light source L _n-4 The positive electrode of the light source group 220 is connected in series. In this embodiment, there are 5 serial connections, and each serial connection corresponds to the negative wires 321 to 325 provided on the substrate 110 to connect the light sources L _n-4 to L _n in the terminal light source group 225 respectively. Bearing area 115 in the light source, the light source L _{3 n-~} L _n negative line 322,323,324 and 325 from the light source L _n-3 ~ L _n respectively extending toward the first side 111, and the carrier is close to the light source 115 arrive The part of the first side 111 is bent to the left. The negative wire 323 and the negative wire 324 are at least partially side by side after being bent to extend along the first side 111, that is, side by side in the direction transverse to the first side direction 112; the negative wire 324 and the negative wire 325 are bent After the first side 111 is folded, some parts are side by side. Source lines L _n-4 of the negative electrode 321 from the light source L _n-4 extends, and arrived at the light source when the carrier block the bent portion near the right side 111 of the first 115. As shown in FIG. 2, the negative line 321 of the light source L _n-4 is not parallel to the negative lines 322, 323, 324, and 325 of the light source L _n-3 ~ L _n in the direction 112 transverse to the first side; in other words, The negative wires 321 to 325 in the light source bearing area 115 are partially aligned in a direction transverse to the first side direction 112, but not all are aligned at the same time. The direction transverse to the first side direction 112 may be, for example, a direction perpendicular to the first side direction 112, but is not limited thereto. From another point of view, if all the negative lines 321 to 325 are projected onto the first side direction 112, at least some of the negative lines do not overlap, for example, the negative line 321 and other negative lines 322 to 325 That is, no overlap.

With the above design, since all the negative lines 321 to 325 do not exist at the same time in the direction transverse to the first side direction 112, the width of the light source carrying area 115 in this direction can be controlled without being too wide.

As shown in FIG. 2, if the first light source in each light source group 220 is called the first light source 211, and the second light source is called the second light source 212, the first light sources 211 in each light source group are connected in series to form One series connection, the second light sources 212 are connected in series to form another series connection. In the first side direction 112, each second light source 212 is located between the first light source 211 of the same light source group and the first light source 211 of the adjacent light source group. The first light source 211 and the second light source 212 in the terminal light source group 225, that is, the light source L _n-4 and the light source L _{n-3 are} connected to the negative line 320 of the two light sources, which can be called the first negative line 321 and the second negative line, respectively Line 322. As mentioned above, the first negative wire 321 and the second negative wire 322 respectively extend from the first light source 211 and the second light source 212 toward the first side 111 and are bent in different directions. The terminal light source group 225 is located at one end of the light source carrying area 115; the substrate 110 has a connecting portion 116 connected to the first side 111 of the light source carrying area 115 near the terminal light source group 225, and the negative wire 320 respectively extends to the connecting portion 116 to be connected to A contact on the connecting portion 116.

FIG. 3 is a schematic diagram of a light source device with a substrate with two arms according to an embodiment of the present invention. As shown in Figure 3, the substrate 110 further includes a first arm 118 and a second arm 119, the first The arm 118 and the second support arm 119 respectively extend from different positions of the first side 111 of the light source carrying area 115. The first negative wire 321 and the second negative wire 322 respectively connected to the first light source 211 and the second light source 212 extend a distance along the first side 111 in the light source carrying area 115 and then bend to extend to the first arm 118, The third negative line 323, the fourth negative line 324, and the fifth negative line 325 are bent and extended to the second arm 119 after extending a distance along the first side 111 in the light source carrying area 115; that is, in the light source carrying area 115 The inner first negative wire 321 and the second negative wire 322 are arranged side by side in the direction transverse to the first side direction 112, and the third negative wire 323, the fourth negative wire 324, and the fifth negative wire 325 are in the direction transverse to the first side. Side by side in the direction of 112. Therefore, the number of negative wires passing through the first arm 118 is 2, and the number of negative wires passing through the second arm 119 is 3. The difference between the numbers of the two is 1. Preferably, the difference in the number of negative lines passing through the first arm 118 and the second arm 119 is preferably 0 or 1, so as to better control the width of the light source carrying area 115 in the direction transverse to the first side direction 112 control.

As shown in FIG. 3, the substrate 110 further includes a bonding portion 117 and a connecting portion 116. The two ends of the connecting portion 117 are respectively connected to the first arm 118 and the second arm 119 opposite to one end of the light source carrying portion 115, and the negative wires 321 to 325 respectively extend to the connecting portion through the first arm 118 or the second arm 119 117. The connecting portion 116 is connected to the connecting portion 117, and the width D1 of the connecting portion 116 in the direction of the first side direction 112 is smaller than the width D2 of the connecting portion 117 in the direction of the first side direction 112. The negative wires 321 to 325 respectively extend to the connecting portion 116 via the connecting portion 117 to be connected to the contacts on the connecting portion 116.

4 is a schematic diagram of a light source device with a three-arm substrate according to an embodiment of the invention. Compared with FIG. 3, there are more third arms 120 in the embodiment of FIG. 4. In this embodiment, the first negative line 321 and the second negative line 322 extend from the light source carrying area 115 to the first arm 118, and the third negative line 323 and the fourth negative line 324 extend from the light source carrying area 115 to the second arm. The support arm 119 and the fifth negative electrode line 325 extend from the light source carrying area 115 to the third support arm 120. Therefore, the number of negative wires carried by the first arm 118 is 2, the number of negative wires carried by the second arm 119 is 2, and the number of negative wires carried by the third arm 120 is 1. The difference in the number of negative wires carried by different arms is 1 or 0, that is, the difference in the number of negative wires is not greater than 1. The negative wires 321 to 325 respectively extend to the connecting portion 117 via the first arm 118, the second arm 119 or the third arm 120, and then to the connecting portion 116. When the number of light sources in the same light source group increases, by increasing the number of arms, the effect of shunting can be achieved and the distribution range of the negative wire can be dispersed.

FIG. 5 is a schematic diagram of a light source device according to another embodiment of the invention. As shown in FIG. 5, the first light source group 230' includes a first A light source 231 and a second A light source 232; the second light source group 240' includes a first B light source 241 and a second B light source distributed along the first side direction 112 242. The first B light source 241 is connected in series with the first A light source 231, and the second B light source 242 is connected in series with the second A light source 232. That is, the negative electrode of the first A light source 231 is connected to the positive electrode of the first B light source 241 by a wire. The negative electrode of the light source 232 is connected to the positive electrode of the second B light source 242 by a wire. The first negative wire 321 is connected to the negative electrode of the first B light source 241, and the second negative wire 322 is connected to the negative electrode of the second B light source 242. In the embodiment of FIG. 5, the first negative wire 321 and the second negative wire 322 in the light source carrying area 115 are not side by side in the direction transverse to the first side direction 112, so the light source carrying area 115 will not be added to the first side. The width in the direction perpendicular to one side direction 112. The substrate 110 includes a first arm 118 and a second arm 119, which extend from different positions of the first side 111, respectively. The first negative wire 321 extends from the light source carrying area 115 to the first arm 118, and the second negative wire 322 extends from the light source carrying area 115 to the second arm 119. The substrate 110 further includes a bonding portion 117 and a connecting portion 116. The two ends of the connecting portion 117 are respectively connected to the first arm 118 and the second arm 119 opposite to one end of the light source carrying portion 115, and the negative wires 321 to 322 respectively extend to the connecting portion through the first arm 118 or the second arm 119 117. The connecting portion 116 is connected to the connecting portion 117, and the width D1 of the connecting portion 116 in the first side direction 112 is smaller than the width D2 of the connecting portion 117 in the first side direction 112. The negative wire 320 respectively extends to the connecting portion 116 via the coupling portion 117.

FIG. 6 is a schematic diagram of a light source device according to another embodiment of the invention. Compared with FIG. 5, the first light source group 230' of FIG. 6 further includes a third A light source 233, and the second light source group 240' further includes a third B light source 243, and the third B light source 243 is connected in series with the third A light source 233. And connected to the third negative line 323. In the embodiment of FIG. 6, in the light source carrying area 115, the third negative electrode line 323 is arranged side by side with the second negative electrode line 322 and not side by side with the first negative electrode line 321 in the transverse direction 112 of the first side. The third negative wire 323 extends from the light source carrying area 115 to the second arm 119, extends to the connecting portion 117 via the second arm 119, and then extends to the connecting portion 116 via the connecting portion 117.

7A-7D are schematic diagrams illustrating the assembly of a backlight module with a substrate with two arms according to another embodiment of the present invention. The backlight module 500 includes a light source device 100 and a casing 400. The housing 400 has a bottom plate 610 and a side wall 440. The bottom plate 610 is formed with a first through hole 411, a second through hole 412, and a first communication hole 421. The first through hole 411 and the second through hole 412 respectively correspond to the first arm 118 and the second arm 119 for receiving the first arm 118 and the second arm 119. The first communication hole 421 communicates with the first through hole 411 and the second through hole 412 respectively. The side wall 440 is upright on the bottom plate 610 and has an inner wall surface 620, and the inner wall surface 620 is preferably perpendicular to the bottom plate 610, but is not limited thereto.

The assembly sequence of the light source device 100 and the housing 400 of the backlight module 500 is shown in FIGS. 7A-7D. As shown in FIG. 7A and FIG. 7B, the substrate 110 is set upright relative to the bottom plate 610, and then the substrate 110 is vertically inserted into the first communication hole 421 with the coupling portion 117. As shown in FIG. 7C, pushing in the direction of the side wall 440 makes the first arm 118 and the second arm 119 enter the first through hole 411 and the second through hole 412, respectively. At this time, the bottom plate 610 is located at the first through hole 411 and the second through hole. The part between 412 corresponds to the insertion hole 130 enclosed by the first arm 118, the second arm 119 and the joint 117. Preferably, the first through hole 411 and the second through hole 412 extend to the bottom of the side wall 440 so that the back surface of the light source carrying area and the inner wall surface 620 overlap. As shown in FIG. 7D, finally, the first arm 118, the second arm 119, the connecting portion 117, and the connecting portion 116 are bent toward the bottom plate 610 to be attached to the bottom plate 610.

FIG. 8 is a schematic diagram of an assembly of a backlight module with a three-arm substrate according to another embodiment of the present invention. Compared with the embodiment shown in FIGS. 7A-7D, the substrate of the light source device 100 shown in FIG. 8 further has an additional third arm 120, so the housing 400 matched with it needs to form a first through hole 411 on the bottom plate 610, The second through hole 412 and the third through hole 413 are used for the first arm 118, the second arm 119 and the third arm 120 to respectively extend. The first support arm 118, the second support arm 119, the third support arm 120 and the connecting portion 117 jointly define two insertion holes 130. In addition, a first communication hole 421 and a second communication hole 422 need to be provided between the first through hole 411, the second through hole 412, and the third through hole 413, respectively, for the joining portion 117 to extend.

The present invention has been described by the above-mentioned related embodiments, but the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, modifications and equivalent arrangements included in the spirit and scope of the patent application are all included in the scope of the present invention.

100: light source device 110: substrate 111: first side 112: first side direction 115: light source bearing area 116: connecting part 117: connecting part D1: connecting part width D2: connecting part width 118: first arm 119: first Two arms 120: third arm 130: socket L ₁ ~ L _n : light source 210: light source 211: first light source 212: second light source 213: third light source 214: fourth light source 215: fifth light source 220: Light source group 225: terminal light source group 230, 230': first light source group 231: first light source 232: second light source 233: third light source 240, 240': second light source group 241: first light source 242 : Second B light source 243: Third B light source 320: Negative line 321: First negative line 322: Second negative line 323: Third negative line 324: Fourth negative line 325: Fifth negative line 400: Housing 411 : First perforation 412: second perforation 413: third perforation 421: first communication hole 422: second communication hole 440: side wall 500: backlight module 610: bottom plate 620: inner wall surface

Fig. 1 is a schematic diagram of a light source device according to an embodiment of the present invention; Fig. 2 is a schematic diagram of a negative wire wiring of a light source device according to an embodiment of the present invention; Fig. 3 is a schematic diagram of a light source device according to an embodiment of the present invention A schematic diagram of a light source device with a substrate with two arms; FIG. 4 is a schematic diagram of a light source device with a substrate with three arms according to an embodiment of the invention; FIG. 5 is a light source according to another embodiment of the invention Device schematic diagram; Fig. 6 is a schematic diagram of a light source device according to another embodiment of the present invention; Figs. 7A-7D are schematic diagrams of an assembly sequence of a light source device and a housing of a backlight module according to an embodiment of the present invention 8 is a schematic diagram of an assembly of a backlight module with a three-arm substrate according to another embodiment of the present invention.

100: light source device

110: substrate

111: first side

112: First side direction

115: light source bearing area

116: connecting part

117: Joint

D1: Connection width

D2: Joint width

118: First arm

119: Second arm

210: light source

211: The first light source

212: second light source

213: third light source

214: The fourth light source

215: Fifth Light Source

225: terminal light source group

320: negative wire

321: first negative wire

322: second negative wire

323: third negative wire

324: Fourth negative wire

325: Fifth negative wire

Claims (20)

A light source device, comprising: a substrate with a light source bearing area, the light source bearing area having a first side, the first side extending along a first side direction; and a plurality of light sources arranged on the light source bearing area ; Wherein, the light sources are divided into a plurality of light source groups, the light source groups are arranged along the first side direction, and the light sources in the light source group are distributed along the first side direction; each of the light sources and other The light sources in the light source group are connected in series to form a plurality of series connections; wherein, the light source groups have a terminal light source group, and each of the series connections corresponds to a negative wire provided on the substrate to connect the terminal light source groups respectively The light sources; the negative wires in the light source bearing area are not all side by side in the direction transverse to the first side direction. The light source device according to claim 1, wherein the negative wires are divided into a plurality of wire groups, the wire groups are arranged along the first side direction, and the negative wires of the same wire group are at least partially transverse to the first side Side by side in one direction. The light source device according to claim 1, wherein each light source group includes a first light source and a second light source, the first light sources are connected in series with each other to form the series connection, and the second light sources are connected in series with each other to form another A series connection; wherein, in the first side direction, each of the first light sources is located between the second light source of the same light source group and the second light source of the adjacent light source group. The light source device according to claim 3, wherein the negative wires have a first negative wire and a second negative wire respectively connected to the first light source and the second light source in the terminal light source group, and the first negative electrode The wire and the second negative wire respectively extend from the first light source and the second light source toward the first side and are bent in different directions. The light source device according to claim 1, wherein the terminal light source group is located at one end of the light source carrying area. The light source device according to claim 5, wherein the substrate has a connecting portion connected to a position where the first side of the light source carrying area is close to the terminal light source group, and the negative wires respectively extend to the connecting portion. The light source device according to claim 1, wherein the substrate further comprises: a first arm extending from the first side; and a second arm extending from the first side, and The first arm is connected to different positions of the first side; wherein, part of the negative wires extends from the light source carrying area to the first arm; and part of the negative wires extends from the light source carrying area to the The second arm. The light source device according to claim 7, wherein the substrate includes a coupling portion respectively connected to the first arm and the second arm opposite to an end of the light source carrying portion, and the negative wires respectively pass through the The first arm or the second arm extends to the joint portion. The light source device according to claim 8, wherein the substrate includes a connecting portion connected to the connecting portion, and a width of the connecting portion in the first side direction is smaller than that of the connecting portion in the first side direction In the upper width, the negative wires respectively extend to the connecting portion. The light source device according to claim 7, wherein the difference in the number of the negative wires of each of the arms is not greater than one. A light source device comprising: A substrate having a light source bearing area, the light source bearing area having a first side, the first side is extended along a first side direction; and a first light source group is arranged on the light source bearing area, and includes a A first light source and a second light source; a second light source group, arranged on the light source carrying area, and including a first light source B and a second light source distributed along the first side direction; the second light source group A B light source is connected in series with the first A light source, and the second B light source is connected in series with the second A light source; a first negative line is connected to the first B light source; and a second negative line is connected to the second B light source ; Wherein, the first light source group and the second light source group are arranged in a distributed arrangement along the first side direction, and the first negative line and the second negative line in the light source carrying area are in the direction transverse to the first side Not side by side. The light source device according to claim 11, further comprising a third negative line; wherein the first light source group includes a third light source A; the second light source group includes a third light source B, and the third light source B and the The third A light source is connected in series and connected to the third negative electrode line; wherein, in the light source bearing area, the third negative electrode line is arranged side by side with the second negative electrode line in the direction transverse to the first side and is connected to the first negative electrode. The lines are not side by side. The light source device according to claim 11, wherein the first light source group and the second light source group are arranged distributed along the first side direction. The light source device according to claim 11 or 12, wherein the substrate further comprises: a first arm extending from the first side; and a second arm extending from the first side, And is connected to the first arm at a different position of the first side; wherein, part of the negative wires extends from the light source carrying area to the first arm; part of the negative wires extends from the light source carrying area to The second arm. The light source device according to claim 14, wherein the substrate includes a coupling portion respectively connected to the first arm and the second arm opposite to an end of the light source carrying portion, and the negative wires respectively pass through The first arm or the second arm extends to the coupling part. The light source device according to claim 15, wherein the substrate includes a connecting portion connected to the connecting portion, and a width of the connecting portion in the first side direction is smaller than that of the connecting portion on the first side The width in the direction, the negative wires respectively extend to the connecting portion. A backlight module, comprising: the light source device according to claim 1 or claim 11, wherein the substrate further includes: a first arm extending from the first side; and a second arm extending from The first side extends out and is connected to the first arm at a different position of the first side; wherein, part of the negative wires extends from the light source carrying area to the first arm; part of the negative wires Extending from the light source carrying area to the second arm; and a housing, including a bottom plate, wherein the bottom plate is formed with a first through hole, a second through hole and communicating with one of the first through hole and the second through hole The first communicating hole; the substrate is set upright relative to the bottom plate, the first through hole is for receiving the first arm, and the second through hole is for receiving the second arm. The backlight module according to claim 17, wherein the housing includes a side wall, and the side wall is upright on the bottom plate. The backlight module according to claim 18, wherein the first through hole and the second through hole respectively extend to the bottom end of the side wall, and the back side of the light source carrying area overlaps an inner wall surface of the side wall. The backlight module according to claim 17, wherein the substrate includes a coupling portion respectively connected to the first arm and the second arm, and the coupling portion, the first arm and the second arm are jointly enclosed A jack, and a part of the bottom plate located between the first through hole and the second through hole is accommodated in the jack.

Images