TWM412380U - Bottom-lighting backlight module - Google Patents

Description

V. New Description: [New Technology Field] [0001] [0002] [0003] The present invention relates to a backlight module, and more particularly to a direct-type backlight module that increases assembly position and alignment structure of a light source. . [Prior Art] In recent years, conventional cathode ray tube displays (commonly known as crt displays) have gradually been replaced by liquid crystal displays. The main reason is that the amount of radiation emitted by liquid crystal displays is much smaller than that of CRT displays. In addition, liquid crystal displays In the past few years, the manufacturing cost has been significantly reduced, which is why LCD monitors have gradually become the mainstream of the TV or computer screen market. 0 LCD display can be used for both LCD panel and backlight module. The module usually uses a direct-lit backlight module or a side-lit backlight module according to the size of the screen. Please refer to FIG. 1. FIG. 1 is a schematic diagram showing the relative positions of a conventional direct type backlight module. As shown in FIG. 1 , the backlight module 1 includes a plurality of light sources 14 , a diffusion plate 15 , a diffusion film 16 , a brightness enhancement film 丨 7 , and a back plate unit 13 . The light source 14 and the backplane unit 13 are disposed on the lower side of the diffuser plate 15, and the backboard unit 13 is configured to receive the light sources 14; wherein the light source 14 is a cold cathode A c〇id Cathode Fluorescent Lamp (CCFL) is used to emit visible light and is used for illumination. The diffusion film 16 and the brightness enhancement film 17 are both located on the upper side of the diffusion plate 15, and the diffusion film 16 is disposed between the diffusion plate 15 and the brightness enhancement film 17. The back plate unit 13 includes a frame body. 33, a plurality of holes 1333 and a plurality of binding frames 135, the holes 1333 are located on the frame body 133, the binding frame form number Α0101 3rd page / 21 pages M412380 135 can be inserted corresponding to the hole 1333 Inside the hole 1333. [0004] Again, please refer to FIG. 2 at the same time, and FIG. 2 is a schematic diagram of assembly of a conventional direct type backlight module. As shown in FIG. 1 and FIG. 2, a plurality of coupling brackets 13 5 are first inserted into the holes 1 3 3 3 so that the coupling frame 135 is firmly fixed to the upper side of the frame body 133, and then The plurality of light sources 14 are erected and fixed on the binding frame 135. Thus, the light source 14 can be firmly combined with the frame body 133 of the backboard unit 13 without being fixed by the combination of the combining frame 135. There is a situation of shaking and falling off. [0005] However, the backplane unit 13 has too many constituent elements, and the assembly man-hour is long, and the binding frame 135 is susceptible to thermal deformation, causing the lamp source 14 to be displaced and the optical taste to be lowered. Moreover, the combination frame 135 The problems of mold opening 'manufacturing, product yield, damage repair, etc. are also the main reasons for the further decline in economic costs. Therefore, how to reduce the number of parts of the backplane unit 13 and simplify the assembly process and working hours thereof to further improve the overall yield of the direct backlight module 1 and reduce the manufacturing cost, which is common in the art. The goal of the intellectuals to work hard. [New Content] [0007] The main purpose of this creation is to reduce the number of parts of the backplane unit and simplify its assembly process and man-hours. [0008] Another object of the present invention is to further improve the overall yield of the direct backlight module and reduce the manufacturing cost. [0009] In order to achieve the above object, the present invention provides a direct type backlight module including a plurality of light sources, a diffusing plate, a brightness enhancing film, and a back sheet form number A0101. Page 4 of 21 M412380 unit The diffusing plate includes a light emitting surface and a light incident surface. The light incident surface and the light emitting surface are respectively located on opposite sides of the diffusing plate, and the light source and the back plate unit are disposed on the diffusing plate. a surface of the light-receiving film is disposed on the light-emitting surface side of the diffusing plate, and the direct-lit backlight module further includes a plurality of alignment structures. The alignment structures are disposed on the inner side of the backplane unit, and each of the alignment structures is disposed adjacent to a light source and adjacent to each other.

[0010] The direct type backlight module as described above, wherein a peripheral outer edge of each of the alignment structures corresponds to a peripheral outer edge of a light source. [0011] The direct type backlight module as described above, wherein the alignment structure protrudes or is recessed into the backplane unit. [0012] The direct-lit backlight module as described above, wherein each of the alignment structures includes at least one positioning point, and each of the light sources includes at least one positioning hole, and the alignment structure is opposite to the light source. When abutting, the positioning point is located in the positioning hole; and the positioning point is in a tight fit state in the positioning hole.

[0013] The direct-lit backlight module as described above, wherein each of the alignment structures includes at least one positioning hole, and each of the light sources includes at least one positioning point, and the alignment structure is opposite to the light source. When abutting, the positioning point is located in the positioning hole; and the positioning point is in a tight fit state in the positioning hole. [0014] The direct-lit backlight module as described above, wherein each of the alignment structures includes a connector receiving groove, and each of the light sources includes an electrical connector, and the alignment structure is adjacent to the light source. The electrical connector is located in the connector receiving groove. [0015] The direct type backlight module as described above, wherein the plurality of light sources are borrowed from the form number A0101, the fifth page, the total of 21 pages, M412380, [0017] [0019] [0019] by at least one connection structure The plurality of alignment structures are connected by at least one accommodating channel. When the plurality of light sources are adjacent to the plurality of aligning structures, the connecting structure is located in the accommodating channel. The direct-lit backlight module further includes a diffusion film disposed between the brightness enhancement film and the diffusion plate. Therefore, the direct type backlight module described in the present invention can reduce the number of parts of the back plate unit, simplify the assembly process and working hours of the direct type backlight module, and further improve the overall yield and reduce the manufacturing cost. In order to familiarize the person skilled in the art with the purpose, features and functions of the present invention, the present invention will be described in detail by the following specific embodiments and with the accompanying drawings. [Embodiment] Please refer to FIG. 3, which is a schematic diagram of a direct type backlight module according to a first embodiment of the present invention. As shown in FIG. 3, the backlight module 3 includes a plurality of light sources 34, a diffusion plate 35, a diffusion film 36, a brightness enhancement film 37, and a back plate unit 33. The diffusing plate 35 includes a light emitting surface 35A and a light incident surface 35B. The light emitting surface 35A is located on the upper side of the diffusing plate 35. The light incident surface 35B is located on the lower side of the diffusing plate 35. Therefore, the light entering the light The surface 35B and the light-emitting surface 35A are respectively located on the opposite sides of the diffusion plate 35. The brightness enhancement film 37 is disposed on the light-emitting surface 35A side of the diffusion plate 35. Therefore, the brightness enhancement film 37 is disposed above the diffusion plate 35. The diffusion film 36 is also disposed above the diffusion plate 35, and the diffusion film 36 is disposed between the brightness enhancement film 37 and the diffusion plate 35 for further increasing the form number A0101, page 6 of 21 The light mixing and spreading effect of light. The light source 34 and the backplane unit 33 are disposed on the light incident surface 35B side of the diffuser 35, and the backplane unit 33 is configured to receive the light sources 34. In order to improve the disadvantages of the prior art, the number of parts of the backplane unit 33 is reduced, the assembly process and man-hours are simplified, and the overall yield of the direct-type backlight module 3 is further improved and the manufacturing cost is reduced. The backlight module 3 further includes a plurality of alignment structures 331 disposed on the upper side of the backplane unit 33, that is, the alignment structures 331 are disposed on the backplane unit 33. One side of the direct-type backlight module 3 is disposed such that each of the alignment structures 331 is respectively disposed corresponding to a light source 34; thus, when assembling the direct-type backlight module 3, each light source 34 is The pair of bit structures 331 are close to each other and adjacent to each other, and the plurality of lamp sources 34 can be quickly positioned and positioned by the alignment and alignment of the alignment structures 331. In the present embodiment, the light source 34 is a Cold Cathode Fluorescent Lamps 'CCFL'. The alignment structure 331 is a groove-like structure recessed into the back plate unit 33, so each lamp The source 34 can be placed in the pair of bit structures 331. In addition to the purpose of rapid assembly and positioning, the source 34 can be prevented from being loosened and shaken. In addition, as shown in the enlarged view of FIG. 3, the plurality of light sources 34 may be connected by a connection structure (not shown), and the connection structure may be a flexible flat cable for electrical connection (Flexible Flat) Cable, FFC), or a connection fixing structure for mounting and fixing, the plurality of alignment structures 331 are connected by a receiving channel 332, and the receiving channel 332 is also a groove-like structure, and the receiving channel 332 vertically penetrates the plurality of alignment structures 331. In this manner, when the plurality of light sources 34 are adjacent to and adjacent to the plurality of alignment structures 331 , the connection structure of the plurality of light sources 34 can be placed in the valley channel 332. Therefore, the receiving channel 332 also has an auxiliary installation form. No. A0101 Page 7 / Total 21 true [0020], the effect of positioning. Therefore, when the plurality of light sources 34 are disposed in the alignment structure 331 of the backplane unit 33, the light can be emitted, the light is emitted upward, and the diffusion film 35 is sequentially passed through the diffusion plate 36. The bright film 37 is used as a backlight of a liquid crystal display (not shown). There are other embodiments of this creation. Referring to FIG. 4, FIG. 4 is a schematic diagram of a direct type backlight module according to a second embodiment of the present invention. As shown in FIG. 4, the direct type backlight module 4 includes a plurality of light sources 44, a diffusion plate 45, a diffusion film 46, a brightness enhancement film 47, and a back plate unit 43. Here, similar structures will not be described again. As shown in the enlarged view of FIG. 4, the light source 44 of the present embodiment is a Light Emitting Diode (LED), and one end of each of the light sources 44 includes a positioning hole 449; each pair Each of the bit structures 4 31 includes an locating point 439 that protrudes from the bottom of the aligning structure 4 31 . The positioning point 439 is a cylinder, and the positioning hole 449 is a circular hole. When the alignment structure 431 is adjacent to the light source 44, the positioning point 439 can be placed in the positioning hole 449. The positioning point 4 3 9 can be matched with the positioning hole 4 4 9 and can be used to achieve the function of assisting installation and positioning. In the preferred embodiment, the positioning point 439 is in a tight fit (interference fit) state in the positioning hole 449; and the peripheral outer edge of each of the alignment structures 431 and the peripheral outer edge of a light source 44 The contours, the sizes, and the thicknesses are substantially the same. Therefore, when the light source 44 is placed in the alignment structure 431, the light source 44 is correspondingly matched; even the light source 44 and the alignment structure 431 are in a tight fit state. It can achieve better installation and positioning functions. Also, each of the light sources 44 may further be provided with an electrical connector 448 for providing a source of voltage or current for the light source 44; each of the alignment structures 431 may also be provided. Form No. A0101, page 8 of 21 further includes a connector receiving slot 438. When the lamp source 44 is adjacent to the alignment structure 431, the electrical connector 448 can be coupled and shaped by shape and contour. The connector 438 is disposed in the connector receiving slot 438 for assisting in the mounting and positioning of the light source 44. In the preferred embodiment, the electrical connector 448 is also in a tight fit when the connector housing 438 is located in the connector receiving slot 438. That is, in the embodiment of FIG. 4, when the light source 44 is placed in the alignment structure 431, the positioning point 439 can be matched with the clamping hole 449, and the electrical connector can be accommodated with the connector. The slot 438 is matched, so that the positioning and alignment effect of the lamp source 44 can be greatly improved, and the installation and configuration of the factory operator can be facilitated, thereby saving man-hours and reducing production cost. [0021] Please refer to FIG. 5. FIG. 5 is a schematic diagram of a direct type backlight module according to a third embodiment of the present invention. As shown in FIG. 5, the direct type backlight module 5 includes a plurality of light sources 54, a diffusion plate 55, a diffusion dam 56, a brightness enhancement film 57, and a back plate unit 53. The plurality of light sources 54 of the present embodiment are connected by a connection structure 541, which may be a flexible cable for electrical connection or a connection fixing structure for mounting and fixing; The bit structures 531 are connected by a receiving channel 532. When the plurality of light sources 54 are adjacent to the plurality of alignment structures 531, the plurality of light sources 54 may be disposed in the plurality of alignment structures 531, and the connection structures 541 may be located in the receiving channels 532 at the same time. Thereby, the present embodiment can also achieve the aforementioned effects. [0022] Please refer to FIG. 6. FIG. 6 is a schematic diagram of a direct type backlight module according to a fourth embodiment of the present invention. As shown in FIG. 6, the direct type backlight module 6 includes a plurality of light sources 64, a diffusion plate 65, a diffusion film, a brightness enhancement film 67, and a back plate unit 63. The bit structure 631 is a form number Α0101, page 9 / 21 pages, M412380, and the back plate unit 63 is protruded, and the upper side of each of the alignment structures 631 is further provided with an positioning point 639 and a joint receiving groove 638; The lower side of the light source 64 is further provided with a positioning hole 649 and an electrical connector 648. Therefore, when the assembly factory of the direct type backlight module 6 is assembled, the apparent alignment structure 631 can be used. The plurality of light sources 64 are smoothly adjacent to and close to the plurality of alignment structures 631, and each of the light sources 64 can pass through the positioning holes 649 and the positioning points 639, and the electrical joint 648 and the joint receiving groove 638. The alignment is accurately positioned without being directly above the alignment structure 631, and no offset or assembly error occurs. [0023] Of course, in other embodiments, the positioning position of the positioning point and the positioning hole can also be changed. , for example, placing the positioning hole on the upper side of the alignment structure The positioning point is disposed on a lower side of the light source, such that when the alignment structure is adjacent to the light source and adjacent to the light source, the positioning point may also be located in the positioning hole, so that the light source and the light source are The assembly of the backplane unit achieves the function of alignment and positioning. Also, the number of the positioning points and the positioning holes may be plural. [0024] In summary, the direct type backlight module of the present invention does not need to be used by The conventional combination frame can quickly and correctly assemble the light source and the back plate unit, so that the number of parts of the back plate unit can be reduced, and the assembly process and working hours of the direct type backlight module can be simplified. Further improving the overall yield and reducing the manufacturing cost, there is a potential for practicality and commercial application. [0025] While the present invention has been disclosed above in the specific embodiments, the specific embodiments disclosed are not intended to limit the present invention. Anyone who is familiar with this skill, without departing from the spirit and scope of this creation, can make various changes to Form No. A0101 Page 10 of 21 M412380 and retouching, the changes and retouchings of which are all belong to this For the scope of this work, the scope of protection of this creation is subject to the definition of the patent application scope attached below. [Simple Description] [0026] Figure 1 is a schematic diagram showing the relative position of a conventional direct-lit backlight module. FIG. 2 is a schematic view showing the assembly of a conventional direct type backlight module. [0028] FIG. 3 is a schematic view showing the direct type backlight module of the first embodiment of the present invention.

4 is a schematic view of a direct type backlight module according to a second embodiment of the present invention. [0030] FIG. 5 is a schematic view of a direct type backlight module according to a third embodiment of the present invention. 6 is a schematic view of a direct type backlight module according to a fourth embodiment of the present invention.

I

[Explanation of main component symbols] [0032] <General knowledge> [0033] 1 : Direct type backlight module [0034] 13: Backplane unit [0035] 133: Frame body [0036] 1 333 : Hole [0037] 135 : Bin form number A0101 Page 11 of 21 M412380 [0038] 1 4 : Light source [0039] 1 5 : Diffuser [0040] 16 : Diffusion film [0041] 17 : Brightening film [0042] 〉 [0043] 3, 4, 5, 6: Direct-type backlight module [0044] 33, 43, 53, 63: Backplane unit [0045] 331 '431, 531 ' 631: Alignment structure [0046] 332, 532: accommodating channel [0047] 438, 638: connector accommodating groove [0048] 439, 639: positioning point [0049] 34, 44, 54, 64: light source [0050] 448, 648: electrical connector [0051] 449, 649: positioning hole [0052] 541: connection structure [0053] 35, 45, 55, 65: diffusion plate [0054] 35A: light-emitting surface [0055] 35B: light-incident surface [0056] 36, 46, 56, 66: Diffusion film form No. A0101 Page 12 of 21 M41.2380 [0057] 37, 47, 57, 67: Brightening film

Form No. A0101 Page 13 of 21

Claims (1)

M412380 •, the scope of patent application: A direct-lit backlight module includes a plurality of light sources, a diffusing plate, a brightness enhancing film, and a backing plate unit, the diffusing plate includes a light emitting surface and a light incident surface, and the light incident surface The light-emitting surfaces are respectively located on the opposite sides of the diffusing plate, and the light source and the back-plate unit are disposed on the light-incident surface side of the diffusing plate, and the back-plate unit is configured to receive the light sources. The film is disposed on the light emitting surface side of the diffusing plate, wherein the direct type backlight module comprises: a plurality of alignment structures, wherein the alignment structures are disposed on the inner side of the backplane unit, each of the alignment structures and the The light sources are arranged adjacent to each other. 2. The direct type backlight module of claim 1, wherein a peripheral outer edge of each pair of bit structures corresponds to a peripheral outer edge of a light source. 3. The direct type backlight module of claim 1, wherein the alignment structure protrudes or is recessed into the backplane unit. 4. The direct type backlight module of claim 1, wherein each The pair of bit structures each include at least one positioning point, and each of the light sources includes at least one positioning hole, and the positioning point is located in the positioning hole when the alignment structure is adjacent to the light source. 5. The direct type backlight module of claim 4, wherein the positioning point is in a tight fit state in the positioning hole. 6. The direct type backlight module of claim 1, wherein each of the alignment structures includes at least one positioning hole, and each of the light sources includes at least one positioning point, and the alignment structure When the light source is adjacent to the light source, the positioning point is located in the positioning hole. 7. The direct type backlight module of claim 6, wherein the positioning point is in a tight fit state in the positioning hole. The direct-lit backlight module of claim 1, wherein each of the alignment structures includes a connector receiving slot, each of which has a connector receiving slot, each of which has a connector receiving slot, each of which has a connector receiving slot The light source includes an electrical connector, and the electrical connector is located in the connector receiving slot when the alignment structure is adjacent to the light source. 9. The direct type backlight module of claim 1, wherein the plurality of light sources are connected by at least one connection structure, and the plurality of alignment structures are separated by at least one receiving channel. Connecting, when a plurality of light sources are adjacent to the plurality of alignment structures, the connection structure is located in the receiving channel. The direct type backlight module of claim 1, wherein the direct type backlight module further comprises a diffusion film disposed between the brightness enhancement film and the diffusion plate. 100208227 Form No. A0101 Page 15 of 21 1002027085-0