TWI504839B - Frame structure of light module - Google Patents

Description

Frame structure of light source module

The present invention relates to a frame, and more particularly to a frame structure of a light source module.

Please refer to FIG. 1 and FIG. 2 , which are respectively a partial assembly diagram and a perspective view of a frame structure of a general backlight module. The frame structure 132 of the backlight module mainly includes a back plate 100, a plastic frame 110 and a front frame 120. In the frame structure 132, the backing plate 100 mainly includes a bottom plate 102 and a plurality of side plates 104. These side panels 104 are joined to the outer edge of the bottom plate 102. In order to make the back plate 100 engage with the plastic frame 110 and the front frame 120, the side plate 104 is generally provided with one or more convex hulls 106, and the top surface of the side plate 104 is provided with a plurality of positioning pieces 108.

The plastic frame 110 includes side plates 112 and 114. The side panels 114 are joined to the outer edges of the side panels 112. One or more recesses 116 are provided in the lower edge of the side panel 114. The number of the grooves 116 is the same as the number of the convex hulls 106 of the back plate 100, and the width of the grooves 116 is approximately equal to the width of the convex hull 106. On the other hand, the side plate 112 is provided with a plurality of positioning holes 118. The number of the positioning holes 118 is the same as the number of the positioning pieces 108 of the back plate 100, and the size of the positioning holes 118 is approximately larger than the size of the positioning piece 108.

The front frame 120 includes side panels 122 and 124. The side panels 124 are joined to the outer edges of the side panels 122. One or more openings are provided on the lower side portion of the side plate 124 Hole 126. The number of openings 126 is the same as the number of convex hulls 106 of the backing plate 100, and the size of the openings 126 is approximately slightly less than or equal to the size of the convex hull 106. In addition, the side plate 122 is also provided with a plurality of positioning holes 128. The number of the positioning holes 128 is the same as the number of the positioning pieces 108 of the back plate 100, and the size of the positioning holes 128 is approximately larger than the size of the positioning piece 108.

As shown in FIG. 1 and FIG. 2, when assembling the frame structure 132 of the backlight module, the plastic frame 110 is first disposed on the side plate 104 of the back plate 100, and the convex package 106 of the back plate 100 is correspondingly disposed on the plastic frame. In the groove 116 of the 110, the positioning piece 108 of the back plate 100 is correspondingly disposed in the positioning hole 118 of the plastic frame 110. Then, the front frame 120 is disposed on the plastic frame 110, and the convex cover 106 of the back plate 100 is correspondingly disposed in the opening 126 of the front frame 120, and the positioning piece 108 of the back plate 100 is correspondingly disposed on the front frame 120. Positioned in the hole 128.

As shown in FIG. 2, after the frame structure 132 of the backlight module is assembled, the inner side surface of the side plate 114 of the plastic frame 110 and the outer side surface of the side plate 104 of the back plate 100 are adhered, and the inner side surface of the side plate 124 of the front frame 120 is completed. The outer side of the side panel 114 of the plastic frame 110 is attached. As such, the thickness 130 of the frame structure 132 is approximately equal to the thickness of the backing plate 100, the thickness of the bezel 110, and the thickness of the front frame 120. Therefore, the thickness 130 of the frame structure 132 is limited by the thickness of the back plate 100, the plastic frame 110 and the front frame 120, and cannot be reduced.

Please refer to FIG. 3A, which is a schematic diagram of a device of a conventional backlight module. The backlight module 216a positions and supports the light guide plate 204 by using a plurality of positioning pins 206 disposed on a back plate (not shown). In the backlight module 216a, the light guide plate 204 is provided with a plurality of grooves 208 for the positioning pins 206 to be disposed therein.

Please refer to FIG. 3B , which is a schematic diagram of another conventional backlight module. Similar to the backlight module 216a, the backlight module 216b positions and supports the light guide plate 204 by using a plurality of positioning pieces 212 disposed on a back plate (not shown). In the backlight module 216b, the light guide plate 204 is also provided with a plurality of grooves 208 for the positioning piece 212 to be disposed therein.

However, as shown in FIGS. 3A and 3B, in the backlight modules 216a and 216b, the side plate 202 of the front frame 200 needs to cover the positioning pin 206 and the positioning piece 212, and the groove 208 of the light guide plate 204. Therefore, the width 210 of the side plate 202a of the front frame 200a of the backlight module 216a and the width 214 of the side plate 202b of the front frame 200b of the backlight module 216b cannot be effectively reduced.

Therefore, in one aspect of the present invention, a frame structure of a light source module is provided, which adopts a coplanar positioning and clamping manner, so that the back plate and the plastic frame, and the plastic frame and the front frame can be engaged on the same plane. Therefore, the width of the frame of the light source module can be effectively reduced while taking into consideration the strength of each component of the frame structure and the stability of the engagement positioning.

Another aspect of the present invention provides a frame structure of a light source module, wherein the side plate of the back plate is provided with an elastic positioning portion, and the convex portion on the positioning portion can fix the light guide plate, and the light guide plate can be provided. The buffer space for impact. Since the positioning portion is disposed on the side plate of the back plate instead of being disposed on the bottom plate, and the convex portion is only slightly convex on the inner side surface of the side plate, the effect of reducing the frame width of the light source module can be achieved under the fixation of the light guide plate. .

According to the above object of the present invention, a frame structure of a light source module is provided, which is suitable for loading a light guide plate and at least one light source. This framework package It includes a back plate, a plastic frame and a front frame. The backboard includes a plurality of first side panels, wherein each of the first side panels is provided with at least one fixing hole and includes at least two upper positioning protrusions. The plastic frame includes a plurality of second side plates correspondingly disposed on the first side plate. Each second side panel includes a joint portion, at least one fixing member, and at least two positioning pieces. The connecting portion is disposed on the corresponding first side plate. The at least one fixing member is engaged under the connecting portion and is latched in at least one fixing hole of the corresponding first side plate. The at least two positioning pieces are protruded from the outer side of the connecting portion. Each positioning piece has a positioning slot, and the positioning protrusions on the corresponding first side plate are respectively embedded in the positioning slots. The front frame includes a plurality of side strips corresponding to the second side panel. Each side strip is provided with at least two positioning holes. The positioning pieces of the corresponding second side plates are respectively embedded in the positioning holes.

According to an embodiment of the invention, the outer side surface of the connecting portion is coplanar with the outer side surface of the corresponding first side plate.

According to another embodiment of the present invention, the at least one fixing member is a barb-like structure.

According to still another embodiment of the present invention, the at least one fixing member is an inverted T-shaped structure.

According to still another embodiment of the present invention, the shape of the at least one fixing member is the same as the shape of the at least one fixing hole.

According to still another embodiment of the present invention, each of the side strips includes a third side panel, and a fourth side panel is joined to one side of the third side panel. The positioning hole is disposed in the fourth side plate, and the fourth side plate is attached to the outer side surface of the corresponding first side plate.

According to still another embodiment of the present invention, the outer side of the fourth side plate is The face is coplanar with the outer side of each positioning piece.

According to still another embodiment of the present invention, a top surface of each of the positioning pieces and a top surface of each of the upper positioning protrusions are coplanar with a top surface of the third side plate.

According to still another embodiment of the present invention, each of the second side plates further includes a pressing member protruding from the inner side of the connecting portion and extending on the periphery of the light guiding plate.

According to still another embodiment of the present invention, each of the first side panels further includes at least one positioning portion and two slots. The inner side surface of the at least one positioning portion includes a convex portion. The two slots are respectively disposed on opposite sides of the at least one positioning portion.

According to still another embodiment of the present invention, the backboard further includes a bottom plate, and the first side plates are disposed on the outer edge of the bottom plate, and the slots extend from the first side plate to the bottom plate.

100‧‧‧ Backplane

102‧‧‧floor

104‧‧‧ side panels

106‧‧‧ convex hull

108‧‧‧ Positioning film

110‧‧‧ plastic frame

112‧‧‧ side panels

114‧‧‧ side panels

116‧‧‧ Groove

118‧‧‧Positioning holes

120‧‧‧ front box

122‧‧‧ side panels

124‧‧‧ side panels

126‧‧‧ openings

128‧‧‧Positioning holes

130‧‧‧ thickness

132‧‧‧Frame structure

200a‧‧‧ front box

200b‧‧‧ front box

202a‧‧‧ side panels

202b‧‧‧ side panels

204‧‧‧Light guide plate

206‧‧‧Tram

208‧‧‧ Groove

210‧‧‧Width

212‧‧‧ Positioning film

214‧‧‧Width

216a‧‧‧Backlight module

216b‧‧‧Backlight module

300‧‧‧ Backplane

300a‧‧‧ Backplane

300b‧‧‧ Backplane

300c‧‧‧ Backplane

302‧‧‧floor

302a‧‧‧floor

302b‧‧‧floor

304‧‧‧First side panel

304a‧‧‧First side panel

304b‧‧‧ first side panel

306‧‧‧Fixed holes

308‧‧‧Upper positioning bump

310‧‧‧Outside

312‧‧‧ plastic frame

314‧‧‧ Linkage Department

316‧‧‧Fixed parts

318‧‧‧ Positioning film

320‧‧‧ positioning slot

322‧‧‧Outside

324‧‧‧ outside side

326‧‧‧Edge strips

328‧‧‧4th side panel

330‧‧‧ third side panel

332‧‧‧Positioning holes

334‧‧‧Outside

336‧‧‧ top surface

338‧‧‧ top surface

340‧‧‧ top surface

342‧‧‧ inside

344‧‧‧Sold parts

346‧‧‧Outside

348‧‧‧ thickness

350‧‧‧ inside

352‧‧‧Light guide plate

354‧‧‧ Positioning Department

354a‧‧‧ Positioning Department

356‧‧‧ slotting

356a‧‧‧ slotting

358‧‧‧ convex

360‧‧‧Frame structure

362‧‧‧Second side panel

364‧‧‧ front box

366‧‧‧ inside

The above and other objects, features, advantages and embodiments of the present invention will be more apparent and understood. The description of the drawings is as follows: FIG. 1 is a schematic view showing a partial assembly of a frame structure of a general backlight module.

FIG. 2 is a perspective view showing a part of a frame structure of a general backlight module.

FIG. 3A is a schematic diagram showing a device of a conventional backlight module.

FIG. 3B is a schematic diagram showing another conventional backlight module.

4A to 4C are diagrams showing an embodiment of the present invention. A flow chart of assembly of a frame structure of a light source module.

FIG. 5A is a schematic diagram of a device between a back plate and a light guide plate of a frame structure of a light source module according to another embodiment of the present invention.

FIG. 5B is a side view showing a back plate of a frame structure of a light source module according to another embodiment of the present invention.

6 is a partial perspective view showing a back plate of a frame structure of a light source module according to still another embodiment of the present invention.

7 is a partial side elevational view of a backing plate of a frame structure of a light source module according to still another embodiment of the present invention.

In general, a light source module used in a flat panel display or a lighting device can mainly include a frame structure, a light guide plate, and a light source. The frame structure can load and protect the light guide plate and the light source. The frame structure is disposed around the periphery of the light guide plate, and the light source component is disposed in the frame structure and adjacent to one side of the light guide plate. Please refer to FIG. 4A to FIG. 4C , which are flowcharts showing the assembly of a frame structure of a light source module according to an embodiment of the present invention. In the present embodiment, the frame structure 360 of the light source module may be, for example, a rectangle, and FIGS. 4A to 4C illustrate only a partial structure of one side of the frame structure 360.

As shown in FIG. 4A, the frame structure 360 mainly includes a back plate 300, a plastic frame 312 and a front frame 364. The material of the backing plate 300 and the front frame 364 may be, for example, a metal. The backing plate 300 can include a plurality of first side panels 304, wherein the first side panels 304 are joined to each other to form a frame-like structure. The back plate 300 can further include a bottom plate 302, and the first side plate 304 is disposed on the outer edge of the bottom plate 302. Each The one side plate 304 may include at least two upper positioning protrusions 308 and at least one fixing hole 306. In each of the first side plates 304, an upper positioning protrusion 308 is disposed at a top end of the first side plate 304, and a fixing hole 306 may be disposed between the two upper positioning protrusions 308. In one embodiment, the opening of the fixing hole 306 is located on the top surface of the first side plate 304, and the opening of the fixing hole 306 has a smaller diameter than the average hole diameter of the fixing hole 306.

The plastic frame 312 can include a plurality of second side plates 362, wherein the second side plates 362 are also joined to each other to form a frame structure. The plastic frame 312 is disposed on the back plate 300, and the second side plates 362 are respectively disposed on the first side plate 304 of the back plate 300. Each of the second side plates 362 mainly includes a joint portion 314 , at least one fixing member 316 and at least two positioning pieces 318 . The connecting portion 314 can connect the fixing member 316 and the positioning piece 318. The fixing member 316 is engaged under the joint portion 314, and the fixing member 316 may be disposed between the two positioning pieces 318. In addition, the fixing member 316 can be correspondingly clamped in the fixing hole 306 of the back plate 300. The shape of the fixing member 316 may be the same as or different from the shape of the corresponding fixing hole 306. In an embodiment, the fixing member 316 extends downward from the bottom of the connecting portion 314, and the outer side 346 of the fixing member 316 can be coplanar with the outer side 322 of the connecting portion 314. The fixture 316 can be any shape, including a regular shape or an irregular shape. In some examples, the fixing member 316 can be a barbed structure or an inverted T-shaped structure to prevent the fixing member 316 from being detached from the fixing hole 306 of the back plate 300, thereby stabilizing the bonding of the plastic frame 312 and the backing plate 300.

In addition, the positioning piece 318 protrudes from the outer side surface 322 of the connecting portion 314, that is, the outer side surface 324 of the positioning piece 318 and the outer side surface 322 of the connecting portion 314 are not coplanar. In addition, each positioning piece 318 is provided with a positioning groove 320. The upper positioning protrusions 308 of the first side plate 304 of the back plate 300 may be correspondingly embedded in the positioning grooves 320.

In an embodiment, the second side panel 362 of the bezel 312 more selectively includes a pressing member 344. The pressing member 344 protrudes from the inner side surface 342 of the connecting portion 314 and extends on the periphery of the light guide plate disposed inside the frame structure 360. Therefore, by the pressing member 344, the light guide plate of the light source module can be press-fixed in the frame structure 360.

The front frame 364 includes a plurality of side strips 326, wherein the side strips 326 are also joined to each other to form a frame-like structure. The front frame 364 is disposed on the back plate 300 and the plastic frame 312, and the side strips 326 are respectively disposed on the second side plate 362 of the plastic frame 312. Each side strip 326 can be provided with at least two positioning holes 332. The positioning pieces 318 of the second side plate 362 corresponding to the side strips 326 can be respectively embedded in the positioning holes 332.

In an embodiment, each side strip 326 can include a third side panel 330 and a fourth side panel 328, wherein the fourth side panel 328 is joined to one side of the third side panel 330. In addition, the positioning holes 332 of each of the side strips 326 are disposed in the fourth side plate 328, and the positioning holes 332 are adjacent to the third side plate 330. When the positioning piece 318 of the second side plate 362 of the plastic frame 312 is respectively embedded in the positioning hole 332 of the corresponding side strip 326, the fourth side plate 328 of the side strip 326 can be adjacent to the first side plate 304 of the back plate 300, even The inner side surface 350 of the fourth side panel 328 can be brought into contact with the outer side surface 310 of the first side panel 304.

As shown in FIG. 4B, when the frame structure 360 is assembled, the plastic frame 312 can be disposed on the back plate 300, and the second side plate 362 of the plastic frame 312 is correspondingly disposed on the first side plate 304 of the back plate 300. At this time, the second side panel The joint portion 314 of the 362 is disposed on the corresponding first side plate 304, and the fixing member 316 is clamped in the fixing hole 306 of the corresponding first side plate 304. Moreover, the positioning protrusions 308 on the first side plate 304 are respectively embedded in the positioning slots 320 of the corresponding positioning pieces 318. At this time, the pressing member 344 of the plastic frame 312 protrudes from the inner side surface of the corresponding first side plate 304.

In an embodiment, when the plastic frame 312 is combined with the back plate 300, the outer side surface 322 of the joint portion 314, the outer side surface 346 of the fixing member 316, and the outer side surface 310 of the corresponding first side plate 304 are coplanar. However, in other embodiments, the outer side 346 of the fixing member 316 may protrude from the outer side surface 310 of the corresponding first side plate 304 or may be recessed on the outer side surface 310 of the corresponding first side plate 304.

In addition, the top surface 338 of the positioning bump 308 above the backing plate 300 can be coplanar with the top surface 340 of the positioning piece 318 of the plastic frame 312. However, in other embodiments, the top surface 338 of the upper positioning bump 308 may protrude from the top surface 340 of the positioning piece 318 or may be recessed on the top surface 340 of the positioning piece 318.

After the plastic frame 312 is disposed on the first side plate 304 of the back plate 300, as shown in FIG. 4C, the front frame 364 is disposed on the plastic frame 312 and the back plate 300, and the side strips 326 of the front frame 364 are correspondingly disposed. The second side plate 362 of the plastic frame 312. At this time, the positioning pieces 318 of the second side plate 362 are respectively embedded in the positioning holes 332 of the fourth side plate 328 of the corresponding third side strip 326.

In one embodiment, after the current frame 364 is combined with the bezel 312, the outer side 334 of the fourth side panel 328 is coplanar with the outer side 324 of the positioning tab 318 of the corresponding second side panel 362. However, in other embodiments, the outer side 334 of the fourth side panel 328 can protrude from the position of the corresponding second side panel 362. The outer side 324 of the tab 318 is recessed from the outer side 324 of the locating tab 318 of the corresponding second side panel 362.

In addition, the top surface 338 of the positioning bump 308 above the backing plate 300 can be coplanar with the top surface 340 of the positioning piece 318 of the plastic frame 312 and the top surface 336 of the third side plate 330 of the front frame 364. In other embodiments, the top surface 338 of the upper positioning protrusion 308 may protrude from the top surface 340 of the positioning piece 318 and the top surface 336 of the third side surface 330, and may protrude from the top surface 340 of the positioning piece 318. The top surface 336 of the third side 330 is coplanar, recessed on the top surface 340 of the positioning piece 318 and the top surface 336 of the third side 330, or recessed on the top surface 336 of the third side 330 but with the top surface 340 of the positioning piece 318. Coplanar.

Referring to FIG. 4C again, in the assembled frame structure 360, the back plate 300 of the frame structure 360 and the plastic frame 312 are engaged on the same plane, and the plastic frame 312 and the front frame 364 are in the same plane. Hehe. As such, the thickness 348 of the frame structure 360 can be only the sum of the thickness of the first side panel 304 of the back panel 300 and the thickness of the fourth side panel 328 of the front frame 364. Therefore, the thickness 348 of the frame structure 360 can be effectively reduced, and the design of the frame structure 360 can be applied, regardless of the positioning stability of the back plate 300, the frame 312 and the front frame 364, and the mechanism strength of the frame structure 360. Light source module products for super narrow frames. Moreover, the reduction of the thickness 348 of the frame structure 360 can also help to increase the length of the light mixing region of the light source, and can effectively solve the hot spot problem of the light source module.

In an exemplary embodiment, the thickness 348 of the frame structure 360 can be reduced to less than 5 mm. In another exemplary embodiment, the thickness 348 of the frame structure 360 can be reduced to 3.5 mm.

In some embodiments, in order to make the combination of the frame structure 360 more stable, one or more protrusions (not shown) may be selectively disposed on the first side plate 304 of the back plate 300, and at the front frame 364. The fourth side plate 328 is provided with a fixing hole (not shown) corresponding to the protrusions. Wherein, the protrusion does not protrude from the outer side 334 of the front frame 364 after being engaged with the fixing hole, and thus does not affect the thickness of the entire frame structure 360. The bonding strength between the back plate 300, the plastic frame 312 and the front frame 364 can be further increased by the corresponding engagement of the protrusions of the back plate 300 with the fixing holes of the front frame 364.

In another embodiment, an elastic positioning mechanism can be disposed on the back plate to reduce the width of the frame structure and to achieve the effect of fixing the light guide plate. Please refer to FIG. 5A and FIG. 5B , which are respectively a schematic diagram of a device between a back plate and a light guide plate of a frame structure of a light source module according to another embodiment of the present invention, and a side view of the back plate. In the embodiment, the first side plate 304a of the back plate 300a further includes at least one positioning portion 354 and two slots 356 in addition to the design of the back plate 300 of the above embodiment.

As shown in FIGS. 5A and 5B, in the first side plate 304a of the back plate 300a, the inner side surface 366 of the positioning portion 354 includes a convex portion 358. In an embodiment, a convex portion 358 may be formed on the inner side surface 366 of the positioning portion 354 by using a convex hull on the first side plate 304a of the back plate 300a. Further, two slots 256 are formed on opposite sides of each of the positioning portions 354 of the first side plate 304a.

The slot 256 is used to separate the positioning portion 354 from other portions of the first side plate 304a, and the positioning portion 354 can have a bottom plate relative to the back plate 300a. 302a and the flexibility of leaning back and forth. In this way, when the light guide plate 352 is disposed on the bottom plate 302a of the back plate 300a, the convex portion 358 on the inner side surface 366 of the positioning portion 354 of the first side plate 304a can fix the position of the light guide plate 352 in the back plate 300a. Moreover, since the positioning portion 354 has elasticity, a buffer space for moving the light guide plate 352 can be provided, and the influence of the impact force on the light guide plate 352 can be reduced.

By providing the convex portion 358 directly on the inner side surface 366 of the positioning portion 354 of the first side plate 304a of the back plate 300a, the width of the frame structure of the light source module can be effectively reduced, and the purpose of positioning the light guide plate can be simultaneously considered. .

Please refer to FIG. 6 , which is a partial perspective view of a backplane of a frame structure of a light source module according to still another embodiment of the present invention. In this embodiment, the structure of the backplane 300b is substantially the same as that of the backplane 300a of the above embodiment, and the difference is that the slot 356a of the backplane 300b extends from the first side panel 304b of the backplane 300b to the bottom panel 302b. a part of. In this way, the elasticity of the positioning portion 354a can be improved, and a larger moving buffer space of the light guide plate (not shown) can be provided, thereby further reducing the influence of the impact force on the light guide plate.

Referring to FIG. 7, a partial side view of a backplane of a frame structure of a light source module according to still another embodiment of the present invention is shown. In the present embodiment, the structure of the backplane 300c is substantially the same as that of the backplane 300a of the above embodiment, and the difference between the two is that the backplane 300c is provided with a positioning portion 354, and is also provided with a fourth embodiment. A fixing hole 306 of the back plate 300 is shown. In this way, the thickness of the frame of the light source module can be reduced and the effect of the impact force on the light guide plate can be reduced.

It can be seen from the above embodiments that one of the advantages of the present invention is that the frame structure of the light source module adopts a coplanar positioning and clamping manner, so that the back plate and the plastic frame, and the plastic frame and the front frame can be stuck on the same plane. Hehe. Therefore, the width of the frame of the light source module can be effectively reduced while taking into consideration the strength of each machine member of the frame structure and the stability of the engagement positioning.

It can be seen from the above embodiments that another advantage of the present invention is that the side plate of the back plate of the frame structure of the light source module is provided with an elastic positioning portion, and the convex portion on the positioning portion can fix the light guide plate, and Provide a buffer space for the impact force of the light guide plate. Since the positioning portion is disposed on the side plate of the back plate instead of being disposed on the bottom plate, and the convex portion is only slightly convex on the inner side surface of the side plate, the effect of reducing the frame width of the light source module can be achieved under the fixation of the light guide plate. .

While the present invention has been described above by way of example, it is not intended to be construed as a limitation of the scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

300‧‧‧ Backplane

302‧‧‧floor

304‧‧‧First side panel

306‧‧‧Fixed holes

308‧‧‧Upper positioning bump

310‧‧‧Outside

312‧‧‧ plastic frame

314‧‧‧ Linkage Department

316‧‧‧Fixed parts

318‧‧‧ Positioning film

320‧‧‧ positioning slot

322‧‧‧Outside

324‧‧‧ outside side

326‧‧‧Edge strips

328‧‧‧4th side panel

330‧‧‧ third side panel

332‧‧‧Positioning holes

334‧‧‧Outside

336‧‧‧ top surface

338‧‧‧ top surface

340‧‧‧ top surface

342‧‧‧ inside

344‧‧‧Sold parts

346‧‧‧Outside

350‧‧‧ inside

360‧‧‧Frame structure

362‧‧‧Second side panel

364‧‧‧ front box

Claims (11)

The frame structure of the light source module is adapted to load a light guide plate and at least one light source, comprising: a back plate, comprising a plurality of first side plates, wherein each of the first side plates is provided with at least one fixing hole and comprises at least two a positioning frame; a plastic frame, comprising a plurality of second side plates correspondingly disposed on the first side plates, wherein each of the second side plates comprises: a connecting portion disposed on the corresponding first side plate; a fixing member is engaged under the connecting portion and is latched in the at least one fixing hole corresponding to the first side plate; and at least two positioning pieces are protruded on an outer side surface of the connecting portion, and each of the The positioning tabs have a positioning slot, wherein the upper positioning protrusions corresponding to the first side panel are respectively embedded in the positioning slots; and a front frame includes a plurality of edge strips corresponding to the second side panels. Each of the side strips is provided with at least two positioning holes, and the positioning pieces corresponding to the second side plates are respectively embedded in the positioning holes. The frame structure of the light source module of claim 1, wherein the outer side surface of the connecting portion is coplanar with an outer side surface of the corresponding first side plate. The frame structure of the light source module of claim 1, wherein the at least one fixing member is a barbed structure. The frame structure of the light source module according to claim 1, wherein the at least one fixing member is an inverted T-shaped structure. The frame structure of the light source module of claim 1, wherein the at least one fixing member has the same shape as the at least one fixing hole. The frame structure of the light source module of claim 1, wherein each of the side strips comprises: a third side panel; and a fourth side panel joined to one side of the third side panel, wherein the positioning holes are In the fourth side panel, the fourth side panel is attached to an outer side surface of the corresponding first side panel. The frame structure of the light source module of claim 6, wherein an outer side surface of the fourth side plate is coplanar with an outer side surface of each of the positioning pieces. The frame structure of the light source module of claim 6, wherein a top surface of each of the positioning pieces and a top surface of each of the upper positioning protrusions are coplanar with a top surface of the third side plate. The frame structure of the light source module of claim 1, wherein each of the second side plates further comprises a pressing member protruding from an inner side surface of the connecting portion and extending around the periphery of the light guiding plate on. The frame structure of the light source module of claim 1, wherein each of the first side panels further comprises: at least one positioning portion, wherein an inner side surface of the at least one positioning portion comprises a convex portion; and two slots And respectively disposed on opposite sides of the at least one positioning portion. The frame structure of the light source module of claim 10, wherein the backplane further comprises a bottom plate, the first side plates are disposed on an outer edge of the bottom plate, and the slots extend from the first side plate to the Base plate.