TWI331692B - Backlight module and application thereof - Google Patents

Description

1331692 IX. Description of the Invention [Technical Field] The present invention relates to a backlight module and an application thereof, and more particularly to a fixing mechanism having a fixed lamp holder, a light guide plate and an optical film Backlight module and its application on liquid crystal display devices. [Prior Art]

Most of the liquid crystal displays currently on the market are backlit liquid crystal displays. These liquid crystal displays are generally composed of a liquid crystal display panel at the front end and a backlight module at the back end. Therefore, the backlight module is a relatively critical component in the liquid crystal display. The backlight module can generally be divided into a direct type and a lateral light input type. The lateral light-incorporating backlight module mainly comprises a back plate, a lamp tube, a light guide plate and an optical film. Generally, the light guide plate is disposed on the back plate, the lamp tube is disposed between the inner side of the side wall of the back plate and the light guide plate, and the optical film is disposed on the light guide plate. There are two main ways to fix the current light guide plate. The first type changes the shape of the light guide plate by cutting the light guide plate so that the light guide plate can be convex or concave to fit with other members (four) in the backlight module. The second method uses double-sided tape to attach the light guide plate to the bottom surface of the back plate. However, in the first way, 'not only will the modeling complexity of the light guide plate be increased, but also the additional cost of the cutting: the cost of the knife. In addition, the part of the fixed structure of the light guide plate cannot be placed without the lamp tube, which will not only limit the pendulum of the light pipe. At the same time, it will lead to waste of space. In the second method, 'if the double-sided adhesive bonding area is too close to the visible area of the display, it will be reversed and the processing method of this method is heavy. 5 1331692 On the other hand, the current lamp fixing method is first The lamp holder is fixed to the two ends of the lamp tube, and then the other members are caught by the shape of the lamp holder. However, such a fixing method of the lamp tube has insufficient fixing strength, and the degree of compactness of the combination of the lamp holder and the other members is insufficient. The heat dissipation by the conduction method cannot be performed, and thus the heat dissipation effect is poor. [Invention] Therefore, the object of the present invention is to provide a backlight module having a solid-fixing mechanism disposed in a non-light-emitting area at a corner of the backlight module, which can simultaneously fix the light guide plate and the lamp support seat without additional design Cut the shape of the light guide without affecting the position of the lamp. Therefore, the shape of the light guide plate can be simplified, and the cutting cost of the light guide plate can be saved, and the limitation of the lamp tube placement area can be reduced, thereby saving space.

Another object of the present invention is to provide a backlight module in which a top surface of a fixing mechanism provided at a corner thereof is provided with at least one convex fixing structure, which can not only effectively position the optical film, and the optical film can be placed. Into the plastic frame. Therefore, the optical film leakage and the optical film Waving can be effectively improved. Another object of the present invention is to provide a liquid crystal display device which uses a fixing mechanism to fix the light guide plate ′ without the use of a double-sided tape, which not only has high reworkability but also saves man-hours, thereby avoiding poor visual taste. Still another object of the present invention is to provide a liquid crystal display device in which the lamp holder can be closely coupled with other members of the backlight module by the mounting of the fixing mechanism, thereby increasing the heat dissipation effect of the lamp holder.

6 1331692 According to the above object of the present invention, a backlight module is provided, comprising: a back plate having a bottom plate and a plurality of side walls surrounding the periphery of the bottom plate; a first lamp group and a second tube group Enclosing the inner side of the side wall, and the two ends of the first tube group are respectively adjacent to the two ends of the second tube group, wherein the first tube group and the second tube group each include at least one tube The two lamp holders are respectively disposed at the two ends of the lamp tube group; the two fixing mechanisms are respectively disposed on the lamp tube holder of the first tube group and the adjacent tube tube holder of the second tube group, wherein each a fixing mechanism having a top plate, and at least one inner side plate extending downward from an inner side of the top plate; and a light guide plate disposed on the bottom plate of the back plate and located in the first tube group, the second tube group, and the foregoing Between fixed institutions. According to a preferred embodiment of the present invention, the bottom plate is further provided with an opening, and at least one of the inner side plates is correspondingly provided with a convex shape, and the lower edge of the inner side plate and the convex object pass through the opening, so that the convex object is placed on the The edge of the opening.

According to an object of the present invention, a backlight module is provided, comprising: a back plate having a bottom plate and a plurality of side walls surrounding the periphery of the bottom plate; a light source 'located on the inner side of the side wall; and a light guide plate Above the bottom plate of the backing plate, between the first tube group and the second tube group; and at least one optical film, disposed above the light guide plate, wherein the at least one optical sheet comprises a plurality of lugs And these lugs are located at the corners of the backboard. According to a preferred embodiment of the present invention, the backlight module further includes at least two fixing mechanisms, and each of the top plates of the fixing mechanism further includes at least one convex fixing structure and each of the lugs includes at least one broken hole. Corresponding to at least one convex fixing structure of each fixing mechanism, wherein at least one convex solid 1313692 of each fixing mechanism is disposed in at least one hole of the corresponding lug to fix the at least optical film .

According to another aspect of the present invention, a liquid crystal display device includes at least a backlight module and a liquid crystal display panel disposed on the backlight module. The backlight module includes at least: a backing plate having a bottom plate and a plurality of side walls surrounding the periphery of the bottom plate; a first lamp tube group is disposed on the side of the side wall (10) The two ends of the tube group are respectively adjacent to the two ends of the second tube group, wherein the first tube group and the second tube group respectively comprise at least one tube and two tube holders respectively disposed at the two ends of the tube group The two fixing mechanisms are respectively disposed on the lamp holders of the first tube group and the adjacent tube tubes of the second tube group, wherein each fixing mechanism has a top plate and at least one inner plate from the top plate One of the inner sides extends downward; and a light guide plate is disposed on the bottom plate of the back plate and located between the first tube group, the second tube group, and the fixing mechanism. According to a preferred embodiment of the present invention, each fixing mechanism includes two inner side plates and two outer side plates, wherein the outer side plates extend downward from the outer side edges of the top plate and respectively correspond to the inner side plate 'and the outer side plate is disposed between the lamp tubes Between the holding seat and the side wall of the backboard, the adjacent two lamp holders are respectively sandwiched between the inner side plate and the corresponding outer side plate. According to still another object of the present invention, a liquid crystal display device includes at least a backlight module and a liquid crystal display panel disposed on the backlight module. The backlight module includes at least: a back plate having a bottom plate and a plurality of side walls surrounding the bottom of the bottom plate; a light source disposed on an inner side surface of the side wall; and a light guide plate disposed on the bottom plate of the back plate And located between the first tube group and the second tube group 8 1331692; and at least one optical film disposed on the light guide plate, wherein the at least one optical film comprises a plurality of lugs, and the lugs Located at the corner of the back panel. According to a preferred embodiment of the present invention, the backlight module further includes at least two fixing mechanisms, and the top plate of each fixing mechanism further includes at least one convex fixing structure to fix the at least one optical film. The fixing mechanism can be used to fix the light guide plate and the lamp holder at the corner of the backlight module, and a convex fixing structure can be arranged on the top plate of the fixing mechanism to clamp the photonic film. Therefore, by the use of the fixing mechanism, the fixing strength of the light guiding lighter and the lamp holder can be enhanced. In addition, since the fixing mechanism is disposed at the corner of the backlight module, it is not necessary to separately cut the light guide plate to make the fixed shape thereof, and the limitation of the installation area of the lamp tube is not increased, thereby simplifying the assembly of the liquid crystal display device, and reworking Good sex, further to save the effect of working hours. Moreover, due to the arrangement of the fixing mechanism, the lamp holder can be more closely engaged with other members, thereby improving the heat dissipation performance of the lamp holder. In addition, since the lug system for positioning the optical film is located at a corner, the optical film can be disposed in the knee frame, and the light leakage can be greatly improved to < optical film < wavy curl phenomenon. [Embodiment] The present invention discloses a backlight module and an application thereof, which have two fixing mechanisms, and can fix a light guide plate and a lamp holder in a corner of the side light module, and further utilize a fixing structure on a top plate of the fixing mechanism. The way to position the optical film can greatly reduce the modeling complexity of the light guide plate and save the cutting cost, reduce the limitation of the lamp & display area, save space, and save the workability and save 1331692 working hours. . Secondly, 'the lug of the optical film is set at the corner, so the optical film can be placed in the frame' to improve the light leakage and avoid the wavy curl of the optical film. The fixing mechanism can make the lamp holder and other components It is more closely connected and can increase the heat dissipation effect. In order to make the description of the present invention more detailed, reference is made to the following description and in conjunction with the drawings of Figures 5 through 5. ^

Please refer to FIG. 1 for a schematic diagram of an assembly system of a backlight module according to a first preferred embodiment of the present invention. The backlight module 丨〇〇a mainly includes a back plate 102, a light source, a light guide plate 〇8, and two fixing mechanisms 116&amp;. The back panel I" includes a bottom plate 104 and a plurality of side wall sills 6, wherein the side walls 1 are disposed on the periphery of the bottom plate 104. The light source is mainly composed of a lamp unit, for example, two tube groups 110, each of which is a lamp The two ends of the tube group 110 are respectively adjacent to the two ends of the other tube group 110, and are disposed in an enclosed manner within the side walls 1〇6. Each of the tube groups 110 includes at least one tube 112. And two lamp holders 114, wherein the two lamp holders 114 are respectively disposed at two ends of the lamp tube 112. In the embodiment, each of the lamp sets 丨1 包括 includes two upper and lower juxtaposed lamps 112. The lamp tube group no may include only one lamp tube or two or more lamps. The lamp tube 112 may generally be a cold cathode lamp tube. In this embodiment, the lamp tube 112 is generally limited to the embodiment. For example, in the other embodiments, the tubes of the two tube groups can be linear tubes and C: fonts. Referring to the enlarged view of the fixing mechanism 11 6a, the fixing mechanism 116a includes a top plate 120a and two inner plates 126a and 130a. Two outer plates 132a and 136a << wherein the top plate 120a by a line 122a and the engaging portion 124a into the inner plate 126a and 130a corresponding to the outer panel 136a and 132a, respectively.

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The inner side plates 126a and 130a extend downward from the inner side edges of the portions 122a and 124a of the top plate 120a, respectively, and the outer side plates 136a and 132a extend downward from the outer side edges of the portions 122a and 124a of the top plate 120a, respectively. The inner side plate i26a and the outer side plates 132a and 136a are respectively provided with convex shapes! 28a, 134a and 140a. The portions 122a and 124a of the top plate 120a may be joined in a substantially L-shaped manner, and a convex fixing structure 13 8 a ' may be further disposed at a corner of the substantially L-shaped top plate 120a. The convex fixing structure 1 3 8 a may be, for example, convex Columnar structure. Each of the fixing mechanism 116a is disposed on the adjacent two ends of the two lamp tubes 11 and the two adjacent lamp holders 114 are respectively disposed at the corners of the backlight module 100a. The inner side plate 126a and the outer side plate 136a of the U6a and the inner side plate 1 3〇a and the outer side plate 1 32a are disposed, and the outer side plates 13 2 a and 13 6 a are drummed on the lamp tube holding seat 114 and the side wall 1 〇6 between. The fixing mechanism 116a is preferably made of a hard material such as electrogalvanized steel sheet (SECC), tinplate, polycarbonate (pc), acrylonitrile butadiene styrene (ABS), or polypropylene (PS) plus glass fiber. The material, in order to enhance the heat dissipation capability, the material of the fixing mechanism 11 6a may be metal. The bottom plate 104 is further provided with an opening i5〇a with respect to the projection 128a of the inner side plate 126a of the fixing mechanism 116a. Further, the side wall 106 is also provided with openings 152&amp; and 154&amp;; with respect to the convex shape 134a of the outer side plate 132a of the fixing mechanism U6a and the convex shape 140a of the outer side plate U6a. When the fixing mechanism n6a is provided, the lower edge of the inner side plate 126a passes through the opening 150a with the convex shape 128a thereon, and the convex object 128a is caught at the edge of the opening 150a, and the convex shape 134a and the outer side plate 136a of the outer side plate 132a. The projections 14a are fitted into the openings 152a and 154a of the side wall 106, respectively. In this way, the fixing mechanism 1331692 U6a can be effectively fixed to the backing plate i2, and the lamp holder 114 is further fixed at the corner of the backing plate 1〇2. Since the fixing mechanism η is disposed, the lamp holder 114 can be more closely connected with the back plate 102 and the light guide plate 1〇8, so that the heat generated by the lamp holder 114 during operation of the display device can be via the fixing mechanism. The conduction of 116a is dissipated through the back plate 1〇2 and/or the light guide plate 1〇8, and the heat dissipation capability of the lamp holder 114 is greatly improved. It should be noted that although the fixing mechanism 丨丨 6a of the embodiment is provided with two convex shapes for fixing, and the back plate 丨〇 2 is oppositely provided with three corresponding openings, the present invention can be used only in the fixing mechanism. Each of the back plates is provided with a joint portion, for example, only the inner side plate 126a is provided with a protrusion 128a and the corresponding opening 150a is disposed on the bottom plate ι 4, and the joint portion on the fixing mechanism and the joint portion on the back plate can be mutually connected Engagement allows the fixing mechanism to be fixed to the backboard. Not only the number of joints can be increased or decreased as needed, but is not limited to the above embodiment, and the joint between the fixing mechanism and the backing plate can also be changed depending on the device. For example, the joint of the fixing mechanism can be an open type, and the joint on the back plate can be

^ is the corresponding convex structure. Further, the joint portion of the fixing mechanism of the present invention may be provided on any of the inner side panels and/or the outer side panels. After the completion of the fixing mechanism 116a, the light guide plate 108 can be placed on the bottom plate 1〇4 of the back plate 102, and the plate-side is located in a lamp tube group 110. In the area, and between the two fixing mechanisms U6a. Since the fixing mechanism is called the inner side panel and the (10) system extends from the inner side of the top board, and such a structure has a strong structural strength, the light guide plate 108 disposed between the fixing mechanisms 116a. Can receive these two. In the present invention, the effective setting of the y 丄 疋 116 mechanism 116a ...... the two tube groups 110 are preferably l-type and two-end 12 1331692

The butt joints are arranged in a square shape. Therefore, the two fixing mechanisms n6a can be located at opposite corners to provide a fixed support for the light guide plate. Since the fixing mechanism 116a' can be used to simultaneously fix the lamp holder U4 and the light guide plate 1〇8 at the corners of the backlight module 1〇〇&amp;, without additionally designing and cutting the shape of the light guide plate 1〇8 Therefore, the complexity of the shape of the light guide plate 1〇8 can be reduced, the cutting cost can be saved, and the arrangement area of the lamp tube is not limited thereby, thereby saving space and being highly competitive in the market. Further, when the light guide plate 8 is fixed, the fixing mechanism 116a is attached to the back plate 1〇2 without using the double-sided glue, so that the workability is good and the man-hour can be saved. Please refer to FIG. 2, which is a diagram showing an assembly system of a backlight module according to a second preferred embodiment of the present invention. The device of the backlight module 1 〇〇b is substantially the same as the device of the backlight module 10a. The main difference is that the fixing mechanism ii6b of the backlight module 100b is different from the fixing mechanism 116a of the backlight module i〇〇a. The fixing mechanism 116b includes a top plate 120b, two inner side plates 126b and 130b, and two outer side plates 132b and 136b. The top plate 120b is also joined by portions 122b and 124b in a substantially L-shaped manner, and the inner plates 126b and 130b correspond to the outer plates 1 3 6 b and 13 2 b, respectively. The inner side plate 12 6 b and the outer side plate 136b, and the inner side plates i3b and the outer side plate 132b extend downward from the inner side and the outer side of the portions 122b and 124b of the top plate pob, respectively. The inner side plate 126b and the outer side plates 132b and 136b are respectively provided with convex shapes 128b, 134b and 140b. A convex fixing structure 138b may be further disposed at a corner of the substantially L-shaped top plate 120b, wherein the convex fixing structure 138b may be, for example, a convex columnar structure. In the present embodiment, the portions 122b and 124b of the top plate 12b of the fixing mechanism 116b and the outer plates 136b and 132b are respectively from their corners.

13 1331692 falls along the side wall 1 〇 6 and extends toward the other corner, and respectively covers the adjacent lamp tubes 112 in the two tube groups 110. In a preferred embodiment of the invention, under the top plate 120b The inner side of the side and outer plates 132b and 136b can be provided with a reflective film, so that the fixing mechanism 116b can also provide the function of reflecting the light source of the lamp.

The bottom plate 104 is further provided with an opening 150b with respect to the convex shape 128a of the inner side plate 126b of the fixing mechanism 116b; and the convex shape 134b of the outer side plate 132t&gt; and the convex shape 140b of the outer side plate 136b, the side wall 1〇6 Openings 152b and 154b are also provided. When the fixing mechanism 116b is installed, the lower edge of the inner side plate 126b and the convex portion 128b thereon pass through the opening 150b, so that the convex object 12 8b is stuck at the edge of the opening 150b, the convex shape 134b of the outer side plate 132b, and The protrusions 140b of the outer side plate 136b are respectively fitted into the openings 1 52b and 154b of the side wall 1 〇 6 to effectively fix the fixing mechanism 116b to the back plate 1〇2, thereby fixing the lamp holder 114. At the corner of the backing plate 102. Please refer to FIG. 3, which is a diagram showing an assembly system of a backlight module according to a third preferred embodiment of the present invention. The device of the backlight module 100c is substantially the same as the device of the backlight module 100b. The main difference is that the fixing mechanism 116c of the backlight module 100c is different from the fixing mechanism 116b of the backlight module 100b. The fixing mechanism 116c mainly includes a top plate 120c, two inner side plates 126c and 130c, and two outer side plates 132c and 136c. The top plate 120c includes substantially vertical portions 122c and 124c, and the inner plates 126c and 130c correspond to the outer plates 136c and 132c, respectively. In the fixing mechanism 116c, the two portions 122c and 124c of the top plate 120c are not engaged, and the inner plates 126c and 130c are joined to each other. Similarly, the inner side plate 126c and the outer side plate 136c, and the inner side plate 130c

14 1331692 The outer side plates 132c extend downward from the inner side and the outer side of the portions 122c and 124c of the top plate i2〇c, respectively. The inner side plate 126c and the outer side plates 1 32c and 1 36c are also provided with convex shapes 128c, 134c and 140c, respectively. As in the second embodiment, in the present embodiment, the portions 122c and 124c of the top plate 120c of the fixing mechanism 116c and the outer plates 136c and 132c respectively extend from the corner where they are located along the side wall 106 toward the other corner. And adjacent to the adjacent lamp tube 112 in the two lamp group ι1. In a preferred embodiment, the lower side of the top plate 12〇c and the inner side of the outer plates 132c and 136c may be provided with a reflective film to reflect the light emitted by the lamp. Similarly, 'relative to the fixing mechanism i丨6c The protrusion 128c 'the bottom plate 104 of the inner side plate 26c is provided with an opening 150c; and the convex part 134c of the outer side plate 1 32c and the convex part 14〇c of the outer side plate 136c are also provided with the side wall 1〇6 There are openings 152c and 154c. When the fixing mechanism 116e is installed, the lower edge of the inner side plate 126c and the convex portion 128c thereon pass through the opening l5〇c, so that the convex piece 128c is caught at the edge of the opening 150c, the convex shape 134c of the outer side plate 132c and the outer side. The protrusions 140c of the plate 136c are respectively fitted into the openings 152c and 154c of the side wall 1〇6, and the fixing mechanism U6c can be fixed on the back plate 1〇2 to further fix the lamp holder 114 to the back plate. 1〇2 corner. Please refer to FIG. 4, which is a diagram showing an assembly system of a backlight module according to a fourth preferred embodiment of the present invention. The device of the backlight module 1〇〇d is substantially the same as the device of the backlight module 100a. The main difference is that the fixing mechanism U6d of the backlight module i〇〇d is different from the fixing mechanism 116a of the backlight module 10a. The mechanism li6d includes a top plate 12〇d' two inner side plates i26d and an outer side plate 136d. The top plate 120d is also joined by a portion that is substantially L-shaped with i24d at 15 1331692. The inner side plates i26b and i3〇d extend downward from the inner side edges of the portions 122d and 124d of the top plate 120d, respectively, and the outer side.

The plate 136d extends downward from the outer side of the portion 122d of the top plate 12〇d. The inner side plate 126d, the outer side of the portion 124d of the top plate i20d, and the outer side plate 13 6d are further provided with convex shapes 128d, n4d and i4〇 (je can be provided with a convex fixing structure at the corner of the top plate 120d) 13 8d, wherein the convex fixing structure 138d can be, for example, a convex columnar structure. In the present embodiment, the fixing mechanism 140d has only one outer side plate 136d. However, it is worth noting that 'in the present invention, the fixing mechanism only The utility model has the function of fixing the light guide plate and the lamp holder by having the top plate and the single inner side plate, so that the inner side plate and/or the one or more outer side plates can be added according to the structural strength requirement, and is not limited to the above embodiment. The protrusion I28d of the inner side plate I26d of the fixing mechanism 116d, the bottom plate 104 is further provided with an opening 15〇d; and the convex part 134d of the portion l24d with respect to the top plate 12〇d and the convex shape i4〇d of the outer side plate i36d The side wall 〇6 is also provided with openings I52d and 154d. When the fixing mechanism i16d is installed, the lower edge of the inner side plate 126d together with the convex shape 128 thereon (1 passes through the opening 15 to make the convex object 128d card Placed on the edge of the opening i5〇d, the top plate 12〇d The shape i34d and the convex shape 140d of the outer side plate 136d are respectively fitted into the openings 152d and I54d of the side wall 1〇6, so that the fixing mechanism U6d can be effectively fixed on the back plate 102, thereby holding the lamp holder 114 is fixed at the corner of the back plate 1〇2. After the light guide plate is set, the optical film can be selectively laid on the light guide plate and the fixing mechanism. Please refer to the backlight module i〇〇e in FIG. The fixing mechanism 116a of the first embodiment is used as an example. After the light guide plate 1 8 16 1331692 is placed in the back plate 102, the optical films 142 and 144 can be laid on the light guide plate 108 and the fixing mechanism 1 i6a. It should be noted that the setting, the type and the number of the optical films H2 and 144 can be adjusted according to the requirements of the liquid crystal display device, and it is not necessary to provide any optical film. The optical film 142 corresponds to the position of the fixing mechanism 116a. And the corners of the periphery of 144 are respectively provided with two lugs 146 and 148, and corresponding to the convex fixing structure 138a of each fixing mechanism n6a, the lugs 146 and 148 are respectively provided with broken holes 156 and 158, wherein these convex portions are respectively provided. Shape fixing structure 138a Do not pass through the holes 156 and 158 of the corresponding lugs 146 and 148. Thus, the corresponding design of the top surface 12A of the fixing mechanism 116a and the lugs 146 and 148 of the optical films 142 and 144. The optical films 142 and 144 can be effectively positioned on the light guide plate 108. Since the fixing mechanism 12 can effectively position the optical cymbals 142 and 144 with the convex fixing structure, the optical films 142 and 144 can be in the subsequent plastic frame ( It is not shown. It can be placed in the plastic frame before setting it. In addition, the lugs 146 and 148 for positioning the optical films 142 and 144 of the present invention are located in the non-light-emitting areas at the corners of the backlight module 1G()a, thereby improving light leakage. Moreover, in this positioning mode, the optical films 142 and 144 are not completely fixed and cannot be moved, but can be extended or contracted to a certain extent, thereby improving the thermal expansion and contraction of the optical films 142 and 144 due to temperature changes. The resulting wavy curl phenomenon. In the present invention, the design of the convex fixing structure of the top plate of the fixing mechanism and the corner lug of the periphery of the optical film can be changed according to the manufacturing or assembly requirements, as long as the convex fixing structure and the lug can cooperate with each other, The optical film can be positioned in the non-light-emitting area of the corner, and the number of the convex structure of the @定机构 17 1331692 can be limited to one. Therefore, one feature of the present invention is that, for an optical module and its application on a liquid crystal display device, the lug for fixing the optical film of the backlight module is disposed in a non-light emitting region at a corner of the backlight module. At the office. The backlight modules 1A1 to 1〇〇e of the present invention described above can be applied to a liquid crystal display device. A liquid crystal display device can be assembled by arranging a liquid crystal display panel on the backlight modules 100a to 100e, and an application of the backlight module of the present invention is completed. According to the preferred embodiment of the present invention, the advantage of the present invention is that the backlight module of the present invention has a fixing mechanism disposed in a non-light-emitting area at a corner of the backlight module, and can simultaneously fix the light guide plate and the lamp support seat without In addition, the shape of the cutting light guide plate is designed, and the area of the lamp tube is not affected. Therefore, by the use of the fixing mechanism, the shape of the light guide plate can be simplified, the cutting cost of the light guide plate can be saved, and the limitation of the lamp tube placement area can be reduced, thereby saving space. According to the preferred embodiment of the present invention, another advantage of the present invention is that the top surface of the fixing mechanism provided in the corner of the backlight module is provided with a convex fixing structure, which can effectively position the optical not only in the non-light-emitting area of the corner. The position of the diaphragm, and the optical film can be placed in the plastic frame. Therefore, it is possible to effectively improve not only the phenomenon that the optical film is wavy, but also the light leakage caused by the provision of the positioning lug in the light-emitting region of the optical film. According to the preferred embodiment of the present invention, another advantage of the present invention is that the fixing mechanism is used to fix the light guide plate without using the double-sided tape, which not only has high reworkability, but also saves man-hours and avoids visual taste. Poor, and thus achieve the purpose of improving the display quality of the liquid crystal display device.

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According to the preferred embodiment of the present invention, another advantage of the present invention is that the lamp holder can be closely coupled with other components of the backlight module by the mounting of the fixing mechanism, thereby increasing the lamp holder. The heat dissipation performance effectively extends the product life of the liquid crystal display device. Although the present invention has been described in a preferred embodiment, it is not intended to limit the invention, and it is obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing an assembly system of a back module in accordance with a first preferred embodiment of the present invention. Figure 2 is a diagram showing the assembly system of a back module in accordance with a second preferred embodiment of the present invention. Figure 3 is a diagram showing an assembly system of a module in accordance with a third preferred embodiment of the present invention. Figure 4 is a diagram showing an assembly system of a module in accordance with a fourth preferred embodiment of the present invention. Fig. 5 is a view showing an assembly system of a back module according to a preferred embodiment of the present invention. [Main component symbol description] 1〇〇a: backlight module 100b: backlight module 100c: backlight module 100d: backlight module 19 1331692

100e: backlight module 104: bottom plate 108: light guide plate 112: lamp tube 116a: fixing mechanism 116c: fixing mechanism 118a: enlarged view 120a: top plate 120c: top plate 122a: portion 122c: portion 124a: portion 124c: portion 126a: inner side plate 126c: inner plate 128a: convex 128c: convex 13 0a: inner plate 13 0c: inner plate 132a: outer plate 132c: outer plate 134b: convex 134d: convex 13 6b: outer plate 102: back Plate 106: side wall 11 0: tube group 114: tube holder 116b: fixing mechanism 116d: fixing mechanism 118d: enlarged view 120b: top plate 120d: top plate 122b: portion 122d: portion 124b: portion 124d: portion 12 6b: Inner side plate 126d: inner side plate 128b: convex type 128d: convex type 13 0b: inner side plate 13 0d: inner side plate 132b: outer side plate 134a: convex type 134c: convex type 13 6a: outer side plate 13 6c: outer side plate 20 1331692

136d: outer side plate 138a: convex fixing structure 138b: convex fixing structure 138d: convex fixing structure 140a: convex type 140b: convex type 140c: convex type 140d: convex type 142: optical film piece 144: optical Diaphragm 146 : lug 148 : lug 150 a : opening 150 b : opening 150 c : opening 150 d : opening 152 a : opening 152 b : opening 152 c : opening 152 d : opening 154 a : opening 154 b : opening 154 c : opening 154 d : opening 1 5 6 : Broken hole 1 5 8 : broken hole

Claims (1)

133.1692 X. Patent application scope: ' 1. A backlight module comprising at least: a negative plate having a bottom plate and a plurality of side walls surrounding the periphery of the bottom plate; the first lamp group and the second tube group Enclosing the inner side of the side wall, and the two ends of the first tube group are respectively adjacent to one end of the second tube group, wherein the first tube group and the second tube group are both included The at least one lamp holder and the two lamp holders are respectively disposed at the ends; the fixing mechanism is respectively disposed on the lamp holders of the first tube group and the adjacent second tube groups a lamp holder, wherein each of the fixing mechanisms has a top plate, and at least one inner plate extends downward from an inner side of the top plate; and the light guide plate is disposed on the bottom plate of the back plate The first lamp group, the second tube group, and the fixing mechanisms. 2. The backlight module of claim 1, wherein the at least one lamp is at least one substantially L-shaped lamp. 3. The backlight module of claim 1, wherein the at least one lamp of the first lamp group is a linear lamp, and the at least one lamp of the second lamp group A C-shaped lamp. 4. The backlight module of claim 2, wherein the 1331692 at least one tube is composed of a cold cathode tube. 5. The backlight module of claim 1, wherein the bottom plate further has a first joint portion, and the at least one inner panel is correspondingly provided with a first joint portion and the first joint portion and the first portion The two joints are joined to each other. The backlight module of claim 5, wherein the first engaging portion is an opening, and the second engaging portion is protruded from the at least one plate: a protrusion and the at least - the lower edge of the inner side panel and the convex shape pass through the "small opening" to place the projection on the edge of the opening. 7. The backlight module of claim 1, wherein each of the fixing mechanisms further comprises at least one outer side panel from one side of the top board to ^= and 'I1&quot;/less-outer side panel. It is between the (4) 挟 holder and at least the side walls. 8. If the at least one outer panel machine of the patent application scope has a backlight module of $, 咕, 斤, wherein the outer panel D has at least one _ _ _ _ _ _ _ 垵 邛 邛The side walls are provided to engage a second joint. The first engaging portion and the at least 9' are as claimed in the patent application. A backlight module according to claim 9, wherein: at least one of the inner panels is provided with a first joint; and the bottom panel is further provided with a backlight module The second joint portion corresponds to the first joint portion, wherein the first joint portion and the second joint portion are joined to each other. The backlight module of claim 10, wherein each of the fixing mechanisms is further The at least two outer side plates extend downward from the outer side of the top plate and respectively correspond to the inner side plates, and the outer side plates are between the lamp tube holding seats and the side walls of the back plate And the adjacent lamp panels are respectively disposed between the inner side panels and the corresponding outer side panels. 12. The backlight module of claim n, wherein the outer side panels At least one of the at least one portion is provided with a third joint portion; and the side walls are provided with a fourth joint portion corresponding to the third joint portion, wherein the second joint portion and the fourth joint portion are engaged with each other. The backlight module described in the scope of patent [i] The top surface has a mutually joined portion and a second portion. The backlight module of claim 13, wherein the first portion and the second portion are joined to form a substantially L-shape. The backlight module of claim 14, wherein the first portion, the second portion, and the outer side plates respectively extend along the side walls and cover the at least the first tube group A lamp unit and the at least one lamp tube of the second tube group. The backlight module of claim 15, wherein the lower side of the top plate and the inner side surfaces of the outer plates are provided with a The backlight module of claim 2, wherein the top surface has a substantially vertical first portion and a second portion and the first portion is not joined to the second portion, and the The inner side panel is joined to each other. The backlight module of claim 17, wherein the inner side panels are respectively joined to the first portion and the second portion. The backlight a module, wherein the first portion, the second portion, and the outer side plates respectively extend along the side walls, and cover the at least one lamp tube of the first tube group and the second tube group The backlight module of claim 19, wherein the lower surface of the top plate and the inner side surfaces of the outer plates are provided with a reflection 1331692 21. The backlight module of claim 1, wherein the top plate of each of the fixing mechanisms further comprises at least one convex fixing structure. The backlight module of claim 21, further comprising at least one optical film disposed on the light guide plate and the fixing mechanism, wherein the convex fixing structure can fix the at least one optical film . 23. The backlight module of claim 22, wherein the periphery of the at least one optical film further has at least two lugs corresponding to the at least one convex fixing structure of each of the fixing mechanisms. The backlight module of claim 23, wherein the female one of the plurality of protrusions comprises at least one hole corresponding to each of the at least one convex fixing structure of each of the fixing mechanisms, and each The at least one convex fixing structure of the fixing mechanism is disposed on the at least one 13131692 liquid crystal display device corresponding to the lugs, and at least includes: a backlight module, comprising at least: a back plate a bottom plate and a plurality of side walls are disposed around the periphery of the bottom plate; a first tube group and a second tube group are disposed around the side sides of the side channels and the two ends of the first tube group Adjacent to the two ends of the second tube group, wherein the first tube group and the second tube group respectively comprise at least one tube and two tube holders respectively disposed at the ends; Separatingly disposed on the lamp holders of the first tube group and the tube holders adjacent to the second tube group, wherein each of the fixing mechanisms has a top plate and at least one inner side a plate extending downward from an inner side of the top plate; a light guide plate disposed on the bottom plate of the back plate and located between the first tube group, the second tube group, and the fixing mechanisms; and a liquid crystal display panel disposed on the backlight module On the group. 26. The liquid crystal display device of claim 25, wherein the at least one lamp is at least one substantially L-shaped lamp. 27. The liquid crystal display device of claim 25, wherein the bottom plate further has an opening and the at least one inner plate is convexly provided with a convex shape, and the lower edge of the at least one inner side plate and the convex portion The pattern passes through the open 6 丄幻.1692 The projection is placed on the edge of the opening. The liquid crystal display device of claim 8, wherein each of the fixing mechanisms further comprises at least one outer panel extending downward from a side J of the top panel, and the at least one outer panel is interposed At least one of the tube holders and at least one of the side walls. The liquid crystal display device of claim 28, wherein the at least one outer side panel is provided with at least one first joint portion, and the side wall walls are provided with at least one second joint portion, and the at least one side wall A first joint portion and the at least one second joint portion are joined to each other. 30. The liquid crystal display device of claim 25, wherein each of the fixing mechanisms comprises two inner side plates. The liquid crystal display device of claim 3, wherein at least one of the inner side plates is provided with a first joint portion; and the bottom plate further comprises a second joint portion corresponding to the first joint a portion, wherein the first joint portion and the second joint portion are joined to each other. The liquid crystal display device of claim 31, wherein each of the fixing mechanisms further comprises at least two outer side plates extending downward from an outer side of the top plate and corresponding to the inner side plates respectively. The outer side plates - 1331692 are interposed between the inner side plates and the outer side plates of the inner side plates of the light pipe holding seats and the side walls of the back side plates. The liquid crystal display device of claim 32, wherein at least one of the outer side plates is provided with a third joint portion; and the side walls are provided with a fourth joint portion corresponding to the The third joint portion 'where the third joint portion and the fourth joint portion are joined to each other. The liquid crystal display device of claim 32, wherein the top surface has a first portion and a second portion joined to each other, and the first portion and the second portion are joined to form a substantially L蜇. The liquid crystal display device of claim 34, wherein the first portion, the second portion, and the outer side plates respectively extend along the side walls and cover the first tube group At least the lamp and the at least one tube of the second tube group. The liquid crystal display device of claim 35, wherein the lower surface of the top plate and the inner side surfaces of the outer plates are provided with a reflective film. 37. The liquid crystal display device of claim 32, wherein the top surface has a substantially vertical first portion and a second portion, and the first portion and the second portion are not joined, and the inner side panels Join each other. 38. The liquid crystal display device of claim 37, wherein the inner side plates are respectively joined to the first portion and the second portion. 39. The liquid crystal display device of claim 38, wherein the first portion, the second portion, and the outer side plates respectively extend along the side walls and cover the first tube group The at least one of the tube and the at least one tube of the second tube group. The liquid crystal display device of claim 39, wherein the lower surface of the top plate and the inner side surfaces of the outer plates are provided with a reflective film. The liquid crystal display device as described in claim 25, wherein the top plate of each of the fixing mechanisms further comprises at least a convex fixing structure. The liquid crystal display device of claim 25, wherein the backlight module further comprises at least one optical film disposed on the light guide plate and the fixing mechanisms, and the convex fixing structure can fix the At least one optical film. The liquid crystal display device of claim 42, wherein the peripheral edge of the at least one optical film further has at least two lugs corresponding to the at least one convex fixing structure of each of the fixing mechanisms. The liquid crystal display device of claim 43, wherein each of the lugs includes at least one hole corresponding to the at least one convex fixing structure of each of the fixing mechanisms, and each of the holes The at least one convex fixing structure of the fixing mechanisms is disposed in the at least one hole of the corresponding lugs. (S) 10