CN100492126C - Backlight module, display module, photoelectric display device and manufacturing method thereof - Google Patents

Abstract

The invention relates to a aphototropic module, display module, photoelectric display comprises a frame, a light source module and several fixing structure. The said frame comprises several jointing sections. The light source module comprises a substrate, several spot light source on the substrate and several opening in the substrate. At least part of the fixing structure comprises at least an upper and a connected lower part, at least one part of the fixed structure with the lower part passing through the light source module and small portion of the openings jointed with small portions of the frame, top of the upper of the fixed structure higher or equal to the top of the light source.

Description

Backlight module, display module, photoelectric display device and manufacturing method thereof

technical field

The invention relates to a backlight module, a display module, a photoelectric display device and a manufacturing method thereof, in particular to a backlight module, a display module, a photoelectric display device and a manufacturing method thereof with a fixed substrate and a fixed structure supporting an optical film.

Background technique

Backlight module (Backlight module) is one of the key components of liquid crystal display panel (liquid crystal display panel, LCD panel). The image is displayed normally.

Backlight modules can be divided into two types: edge-lit and direct-lit. Among them, the direct-lit backlight module is mainly composed of a light source, a reflector, a diffusion plate, a diffusion sheet, and a brightness enhancement film. ) and other components such as optical film and frame are assembled. After the light emitted by the light source enters the diffuser plate, it will guide the incoming light source and distribute it into a uniform surface light source. The reflective sheet on one side of the optical diaphragm will reflect the light directed towards the reflective sheet back into the diffuser plate. Prevent the leakage of light source to increase the efficiency of light use. The light emitted from the diffusion plate passes through the uniform light effect of the diffuser film and the light collection effect of the brightness enhancement film to improve the brightness and uniformity of the light source, and then injects the light into the liquid crystal panel.

Light Emitting Diode (LED) has the advantages of area control, fast driving, avoiding afterimage, and no mercury, so there is a trend to use light emitting diodes to replace cold cathode lamps (CCFL) as light sources. Improving the assembly method of the fixed structure and the number of components will help output capacity.

Please refer to FIG. 1 , which is a schematic diagram of a backlight module 100 in the prior art. The backlight module 100 includes a frame 110 , a substrate 120 , a plurality of LEDs 121 , a reflector 123 and an optical film 140 . The plurality of LEDs 121 are carried on the substrate 120 . The reflection sheet 123 is placed on the substrate 120 for reflecting the light generated by the LEDs 121 . The diffusion plate 140 is disposed on the reflection sheet 123 for diffusing the light emitted from the reflection sheet 123 and the LEDs 121 . The frame 110 is used for accommodating components such as the substrate 120 , several LEDs 121 , and the reflector 123 , so as to avoid the influence of external dust. The base plate 120 is fixed on the screw hole 112 of the frame 110 through the opening 122 of the base plate through the screw 111 .

When the screw 111 is locked with the screw hole 112, since the height of the screw 111 is not enough to resist the diffuser 140, at least one additional support mechanism 150 is required to resist the optical film 140 to prevent the optical film 140 from being placed on the frame. 110 o'clock concave deformation. In addition, in the backlight module 100 of the prior art, the screw 111 is locked on the screw hole 112 of the frame 110 to fix the substrate 120 by passing through the opening of the substrate 120 from top to bottom. Triggering the photodiode 121 causes damage.

Contents of the invention

The object of the present invention is to provide a backlight module, a display module, an optoelectronic display device and a manufacturing method thereof, and a fixing structure with fixing and supporting functions to replace the known fixing method of screw holes, so as to solve the problems of the above-mentioned known technologies.

In order to achieve the above object, the present invention provides a backlight module, which includes a frame, a light source module and several fixing structures. The frame contains several joints. The light source module includes at least one substrate, several point light sources arranged on the substrate and several openings in the substrate. At least a part of the fixing structure includes at least one upper part and at least one connected lower part, wherein the lower part of at least a part of the fixing structure passes through the opening of at least a part of the light source module, and the joint part of at least a part of the frame joint, and at least a part of the top of the upper part of the fixing structure is substantially higher than or equal to at least a part of the top of the point light source.

In order to achieve the above object, the present invention provides a display module, including the above-mentioned backlight module of the present invention.

In order to achieve the above object, the present invention provides an optoelectronic display device, comprising the above-mentioned backlight module of the present invention.

In order to achieve the above object, the present invention provides an optoelectronic display device, comprising the above-mentioned display module of the present invention.

In order to achieve the above object, the present invention provides a method for manufacturing a backlight module. The backlight module includes a frame with several joints, a light source module with at least one substrate, several point light sources and a number of light sources arranged on the substrate. an opening in the substrate and a plurality of fixing structures, at least a part of the fixing structure includes at least one upper part and at least one connected lower part, the method includes: placing the light source module on the frame; and placing at least a part of the fixing structure The lower part of the fixing structure passes through the opening of at least a part of the base plate and engages with the joint part of at least a part of the frame, wherein the top end of the upper part of at least a part of the fixing structure is substantially higher than or equal to at least a part of The top of the point light.

In order to achieve the above object, the present invention provides a method for manufacturing a display module, which includes the above-mentioned method for manufacturing a backlight module of the present invention.

In order to achieve the above object, the present invention provides a method for manufacturing an optoelectronic display device, which includes the above method for manufacturing a backlight module of the present invention.

In order to achieve the above object, the present invention provides a method for manufacturing an optoelectronic display device, which includes the above method for manufacturing a display module of the present invention.

The advantage of the present invention is that the purpose of fixing the substrate and supporting the optical film is achieved by using the fixing structure, the fixing structure is easy to install and disassemble, and no additional supporting device is needed to resist the optical film.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

Fig. 1 is the schematic diagram of the backlight module of known technology;

Fig. 2 is the schematic diagram of the photoelectric display device of the present invention;

FIG. 3 is an exploded schematic view of the display module in FIG. 2;

Fig. 4 is a sectional view of the backlight module of Fig. 3 along the tangent line 3-3';

FIG. 5 is a schematic diagram of the assembled backlight module of FIG. 4;

6 is a top view of a second embodiment of the backlight module of FIG. 2;

7 is a top view of a third embodiment of the backlight module of FIG. 2;

8 is a top view of a fourth embodiment of the backlight module of FIG. 2;

9A to 9D are schematic diagrams of the frame and the junction;

10A to 10G are schematic diagrams of various aspects of the fixed structure;

11 is an exploded schematic diagram of a second embodiment of the display module of the present invention;

FIG. 12 is a schematic diagram of the assembled backlight module of FIG. 11;

FIG. 13 is a flow chart of forming an optoelectronic display device with a backlight module according to an embodiment of the present invention.

Among them, reference signs:

100, 200 backlight module 110, 210 frame

120, 220 Substrate 123, 223, 227 Reflector

121 Light-emitting diodes 140, 240 Optical film

111 screw 112 screw hole

150 Support mechanism 122, 222 Opening of base plate

213 Junction part 230 Fixed structure

221 Point light source 240 Optical film

231 upper part 232 lower part

224 Opening of reflector 225 Opening

234 Thread 2321 Flange

233 connectors

502 Electronic Modules 503 Electronic Assemblies

504 Display Module 506 Display Panel

500 photoelectric display device

Detailed ways

Please refer to FIG. 2 , which is a schematic diagram of an optoelectronic display device 500 of the present invention. The optoelectronic display device 500 includes an electronic module 502 provided with at least one electronic component 503 and a display module 504 connected with the electronic module 502 . The display module 504 includes a display panel 506 and a backlight module 200 . Moreover, the electronic component 503 includes, for example, a control component, an operating component, a processing component, an input component, a storage component, a driving component, a light emitting component, a protection component, a sensing component, a detection component, or other functional components, or a combination thereof. The backlight module 200 is used to generate the backlight required by the display panel 506, so the display panel 506 is a liquid crystal display panel including: a transmissive panel, a semi-transmissive panel, a reflective panel, a double-sided display panel, and a vertical alignment panel. (VA), Horizontal Switching Panel (IPS), Multi-Domain Vertical Alignment (MVA), Twisted Nematic (TN), Super Twisted Nematic (STN), Patterned Vertical Alignment (PVA), Super patterned vertical alignment panel (S-PVA), advanced large viewing angle panel (ASV), fringe field switching panel (FFS), continuous fireworks array panel (CPA), axisymmetric array microcell panel (ASM), Optically Compensated Bend Alignment Panel (OCB), Super Horizontal Switching Panel (S-IPS), Advanced Super Horizontal Switching Panel (AS-IPS), Extreme Edge Field Switching Panel (UFFS), Polymer Stabilized Alignment Panel ( PSA), dual-view panel (dua1-view), triple-view panel (triple-view), or other types of panels, or a combination of the above. That is to say, the optoelectronic display device 500 is a device using the display panel 506 of the display module 504 . The type of photoelectric display device 500 includes such as: portable products (such as mobile phones, video cameras, cameras, notebook computers, game consoles, watches, music players, electronic mail transceivers, map navigators or similar products), audio-visual products (such as AV projectors or similar products), screens, televisions, billboards, etc.

Please refer to FIG. 3, FIG. 4 and FIG. 5 together. FIG. 3 is an exploded schematic view of the display module 504 in FIG. 2, FIG. 4 is a cross-sectional view of the backlight module 200 in FIG. A schematic diagram of the assembled backlight module 200 . For ease of description and clarity of the drawing, the backlight module 200 in FIG. 3 omits to draw the optical film 240 and the display panel 506, and the larger unfilled circle shown in FIG. 3 represents the opening 225, and the smaller unfilled circle The point light source 221 is represented, and the black circle represents the fixing structure 230 that has passed through the opening 225 . The light source module 212 includes at least one substrate 220 and several point light sources 221 disposed on the substrate 220 (for clarity of the drawing, only one point light source 221 is marked in FIG. 4 ). In an embodiment of the present invention, the point light source 221 includes a semiconductor light source, and its material includes, for example, an organic material, an inorganic material, or a combination thereof. Moreover, the light emitting mode of the point light source 221 includes, for example: direct light type, side light type, or a combination of the above. In other words, the point light sources 221 in the backlight module 200 may all be direct-light or side-light, some of them may be direct-light and the other part may be side-light, and each point light source 221 may have a direct light at the same time. and side-light properties, or at least a part of the point light source has both direct-light and side-light properties and is combined with a point light source that does not have both direct-light and side-light properties. The point light source in the embodiment of the present invention is exemplified by a semiconductor light source (such as a diode) made of inorganic materials. Each substrate 220 includes at least one opening 225 , at least a part of the fixing structure 230 can pass through the opening 225 , so that the light source module 212 is fixed on the frame 210 . The number of fixed structures 230 can be set according to the size of the optical film 240, as shown in Figure 3, if the area of the optical film 240 is small, the number of fixed structures 230 can be less, if the area of the optical film 240 When it is larger, in order to avoid too many recessed areas of the optical film 240 , several fixing structures 230 can be added and pass through the remaining openings 225 . That is to say, the fixing structure 230 can pass through some of the openings, and can also pass through all the reserved openings on the substrate except the openings required for accommodating the point light sources 221 . The optical film 240 includes a polarizer, a brightness enhancement film, a prism film, a light guide film, a light wavelength selection film, a light transmission and reflection selection film, or other functional films, or a combination thereof.

Please refer to Figure 6 to Figure 8. In addition to the arrangement of the light source modules 212 shown in FIG. 3 , the light source modules 212 in the backlight module 200 may also be arranged, but not limited, in the implementations shown in FIGS. 6 to 8 . The light source module 212 shown in FIGS. 6 to 8 includes a substrate 220 and several point light sources 221 disposed on the substrate 220 . The larger unfilled circles shown in FIGS. 6-8 represent the openings 225 , the smaller unfilled circles represent the point light sources 221 , and the black circles represent the fixing structures 230 that have passed through the openings 225 . The point light source 221 includes a semiconductor light source, and its material includes, for example, organic material, inorganic material or a combination thereof. Moreover, the light emitting mode of the point light source 221 includes, for example, a direct light type, a side light type, or a combination of the above. In other words, the point light sources in the backlight module can all be direct light or side light, some of them are direct light and the other part are side light, and each point light source 221 has direct light and side light at the same time. The nature of the light type, or at least a part of the point light source has the properties of the direct light type and the side light type at the same time, and the point light source that does not have the properties of the direct light type and the side light type at the same time. The point light source 221 in the embodiment of the present invention is exemplified by a semiconductor light source (such as a diode) made of inorganic materials. The light source module 212 is fixed on the frame 210 by using at least one fixing structure 230 .

Several fixing structures 230 can be disposed on each light source module 212 , so that the several fixing structures 230 are distributed on a plane corresponding to the bottom of the frame 210 . Preferably, the fixing structure 230 of the light source module 212 shown in FIGS. 3 to 8 is placed at a position away from one of the two opposite sides of the frame 210, which is substantially one-third of the length of the two opposite sides. to two-thirds. Taking FIG. 6 as an example, the positions of the fixed structures 230a and 230b are substantially between 1/3×d2 and 2/3×d2 from the side d1 respectively, and the position of the fixed structure 230c is substantially 1 from the side d1 respectively. /2×d2, but not limited thereto, and can also be other distances, as long as it meets the implementation spirit and design requirements of the present invention. The fixing structure 230 provided on each light source module 212 is used to support the optical film. It should be noted that FIG. 4 is a cross-sectional view of the backlight module 200 in FIG. 3 along the tangent line 3-3', and is not used to limit the positions of the fixing structure 230 and the point light source 221 on the substrate 220. That is to say, the position of the fixed structure 230 and the point light source 221 on the substrate 220 is not necessarily as shown in FIG. 3 and FIG. That is to say, where the support force of the backlight module 200 supporting the optical film is insufficient can be used as an adjustment basis. That is to say, the fixing structure 230 can pass through some of the openings, and can also pass through all the reserved openings on the substrate except the openings required for accommodating point light sources. The optical film includes a polarizer, a brightness enhancement film, a prism film, a light guide film, a light wavelength selection film, a light transmission and reflection selection film, or other functional films, or a combination of the above.

Please continue to refer to FIG. 4 and FIG. 5 . The backlight module 200 includes a frame 210 , a light source module 212 , at least one reflector 223 , 227 , several fixing structures 230 and an optical film 240 . An adhesive (not shown) can be used to bond between the reflective sheet 223 and the substrate 220 to achieve a firm purpose, and the reflective sheet 227 can also be bonded to the frame 210 using an adhesive (not shown). On both sides 2101, 2102. The reflection sheet 223 includes a plurality of openings 224 , 225 , and the reflection sheet 223 is placed on the substrate 220 for reflecting the light generated by the point light source 221 . The optical film 240 is disposed on the reflection sheet 223 for transmitting light emitted from the reflection sheet 223 and the point light source 221 . The frame 210 is used to carry components such as the substrate 220 , the reflection sheet 223 and several point light sources 221 to avoid the influence of external dust. The frame 210 is provided with several joint parts 213 . Please refer to FIG. 9A to FIG. 9D . For convenience of description, FIG. 9A to FIG. 9D only show the shape of the joint portion 213 of the frame 210 . As shown in FIG. 9A , the joints 213 can be an opening through the frame 210 . As shown in FIG. 9B , the engaging portion 213 may be a recessed opening provided on the frame 210 , also called a groove. As shown in FIG. 9C , the joint portion 213 can be a hollow cylinder, and the inner surface of the joint portion 213 is provided with threads 234 . As shown in FIG. 9D , the joint part 213 can be a cylinder (for example, hollow or solid, the present invention takes a solid cylinder as an example), and the surface of the joint part 213 is provided with threads 2132 . In FIG. 9C and FIG. 9D , the top view of the hollow cylinder and the joint portion 213 of the cylinder is polygonal. Preferably, the top view is substantially circular, hexagonal, pentagonal, quadrangular, and triangular, but not limited thereto. Other shapes are also possible. And the material forming the joint portion 213 can be substantially rigid plastic (such as: thermoplastic, thermosetting or a combination of the above), metal (such as: gold, silver, copper, iron, tin, aluminum, magnesium, titanium, tantalum, molybdenum, alloys, or combinations thereof) or combinations thereof. The above-mentioned joint part and the frame body are movably connected or integrally formed. Preferably, the joint part of the present invention is made of metal. The substrate 220 is fixed on the frame 210 by the fixing structure 230 .

When the reflection sheet 223 is placed on the substrate 220 , the openings 224 pass through the point light sources 221 . At this moment, the plurality of openings 225 of the reflection sheet 223 substantially correspond to the plurality of openings 222 of the substrate 220 and the plurality of joint portions 213 of the frame 210 . At least a part of the fixing structure 230 includes at least one upper part 231 and at least one lower part 232, one of the upper part 231 and the lower part 232 includes a polymer material, metal (such as: gold, silver, copper, iron, tin, aluminum, magnesium, titanium, tantalum, molybdenum, alloys, or combinations thereof) or combinations thereof. Wherein the polymer material includes thermosetting, thermoplastic or a combination thereof. At least a part of the upper part 231 and the lower part 232 of the fixing structure 230 can be integrally formed or separated. Please refer to FIG. 10A to FIG. 10G , which illustrate various forms of the fixing structure 230 . As shown in the figure, the maximum cross-sectional area of the upper part 231 of the fixed structure 230 is substantially different from the maximum cross-sectional area of the lower part 232 of the fixed structure 230, as shown in Figures 10A to 10C and Figures 10E to 10G, the upper part 231 The maximum cross-sectional area is substantially greater than or equal to the maximum cross-sectional area of the lower part 232 of the part of the fixing structure 230 , so when the fixing structure 230 fixes the substrate 220 on the frame 210 , the substrate 220 can be prevented from falling off. As shown in Figure 10A and Figure 10G, the upper part 231 is a cone, and the lower part 232 is a cylinder, and the maximum cross-sectional area of the upper part 231 of the cone is greater than the cross-sectional area of the lower part 232 of the cylinder, preferably, the upper part The top of the 231 can be designed to be substantially arc-shaped or, as shown in FIG. 10G , the top of the cone is substantially dish-shaped to avoid scratching the optical film 240 . Of course, the design of the fixing structure 230 as shown in FIG. 10B is also feasible. In addition, as shown in FIG. 10C , the lower part 232 of the fixing structure 230 includes a flange 2321. When the fixing structure 230 is pressed into the corresponding joint portion 213, the flange 2321 of the fixing structure 230 can be used to abut against the joint portion 213, The flange can be a convex smooth surface or elastic corrugations. The shape of the fixing structure 230 can also be shown in FIG. 10D , the maximum cross-sectional area of the upper part 231 is substantially smaller than the maximum cross-sectional area of the lower part 232 of part of the fixing structure 230 . The shape of the fixing structure 230 can also be shown in FIG. 10E and FIG. 10F , and a connecting piece 233 is provided between the upper part 231 and the lower part 232 of the fixing structure 230 . In addition, in order to enhance the locking effect, the lower part 232 of the fixing structure 230 shown in Fig. 10A, Fig. 10B, Fig. 10D, Fig. 10E, Fig. 10F, and Fig. 10G is set according to the design form of the corresponding joint portion. Thread (not shown in Fig. 10A, Fig. 10B, Fig. 10D, Fig. 10E, Fig. 10F, Fig. 10G), such as: the form of joint shown in Fig. 9C, then the surface of the lower part 232 of the fixing structure 230 will be provided with threads , used to engage with the joint portion 213 of the corresponding thread, and if it is the joint form shown in Figure 9A and Figure 9B, then the surface of the lower part 232 of the fixing structure 230 can be provided with threads or not according to its design form. Threads are provided, or the shape of the joint portion as shown in FIG. 9D is provided, then the lower part 232 of the fixed structure 230 will present a hollow cylinder, and threads (not shown) will be provided on the inner surface (not shown in the figure), It is used to engage with the engaging portion 213 of the correspondingly provided thread.

Please continue to refer to FIG. 4 and FIG. 5 . The lower portion 232 of each fixing structure 230 passes through the opening 225 of the reflective sheet 223 and the opening 222 of the substrate 220 to engage with the joint portion 213 of the frame 210 . The surface of the lower part 232 of part of the fixing structure 230 has a thread 234, and the surface of the corresponding joint part 213 also has a thread corresponding to the lower part 232 of each fixing structure 230 (see FIG. 9C, FIG. 9D, not shown ). Once the lower portion 232 of the fixing structure 230 passes through the opening 225 of the reflection sheet 223 and the opening 222 of the base plate 220 , it can be engaged with the thread 234 of the joint portion 213 to achieve the purpose of locking. When the fixing structure 230 fixes the substrate 220 and the frame 210, in order to avoid electric shock due to leakage, several insulating layers (not shown) are arranged in the opening 222 of the substrate 220 or the bonding is performed in the part of the frame 210. The portion 213 is provided with several insulating layers (not shown in the figure). When the fixing structure 230 fixes the substrate 220 and the frame 210 , the top height of at least a part of the upper part 231 is substantially greater than the top height of at least a part of the point light source 221 for supporting the optical film 240 .

Please refer to FIG. 11 and FIG. 12 , FIG. 11 is an exploded view of a second embodiment of the display module 504 of the present invention. FIG. 12 is a schematic diagram of the assembled backlight module 200 of FIG. 11 . In this embodiment, components with the same numbers as those in FIG. 4 and FIG. 5 have the same functions, descriptions, and implementations, and therefore, details are not repeated here. The length of the reflection sheet 223 shown in Figure 11 is relatively large, so when assembled, there is a folding line (not shown in the figure) on the reflection sheet 223, so that the first part 2231 of the reflection sheet 223 is fixed on the substrate 220, and the reflection sheet 223 The second part 2232 and the third part 2233 can be attached to the two sides 2101 , 2102 of the frame 210 .

FIG. 13 is a flow chart of manufacturing the backlight module 200 into an optoelectronic display device 500 according to the present invention. Please refer to FIG. 4 and FIG. 5 , FIG. 11 and FIG. 12 and FIG. 13 together, first provide a frame 210, a light source module 212 and several fixing structures 230, the frame 210 has several joints 213, and the light source module 212 has At least one substrate 220 , several point light sources 221 disposed on the substrate 220 and several openings 225 in the substrate 220 , at least a part of the fixing structure 230 includes at least one upper portion 231 and at least one connected lower portion 232 . In the manufacturing process of the backlight module 200 of this embodiment, the steps of assembling the fixing structure 230 on the light source module 212 are as follows:

Step S502 : Place a light source module 212 on the frame 210 .

Step S506: pass at least a part of the lower part 232 of the fixing structure 230 through at least a part of the opening 222 of the substrate 220 and at least a part of the opening 225 of the reflective sheet 223, and connect with at least a part of the frame 210 part 213 , wherein at least a part of the top of the upper part 231 of the fixing structure 230 is substantially higher than or equal to the top of the point light source 221 .

In addition, in order to increase the light reflectivity of the light source, the reflective sheet 227 needs to be assembled in the backlight module, so the assembly process of the backlight module 200 also includes the following steps:

Step S504 : Fix the reflection sheet 227 on at least one of the substrate 220 and the side of the frame 210 .

When the size of the reflection sheet 227 is substantially smaller than or equal to the size of the frame 210 (as shown in Figures 4 and 5), this step includes: at least one adhesive is set on the part of the lower surface of the reflection sheet 227, and the reflection The sheet 227 is placed on the two sides 2101 , 2102 of the frame 210 , and the reflective sheet 227 is fixed on the two sides 2101 , 2102 of the frame 210 by using the adhesive. The step of fixing the reflective sheet 223 on the substrate 220 is to utilize at least one adhesive (not shown) to be arranged on the part of the lower surface of the reflective sheet 223 and to use the fixing structure 230 to pass through the opening 225 of the part on the reflective sheet 223. At least one of them is fixed on the substrate 220, and the opening 224 of the reflecting sheet 223 accommodates the point light source 221, wherein the opening 225 of at least a part of the reflecting sheet 223 substantially corresponds to the opening 225 of at least a part of the substrate 220. At least one of the joint portion of the opening 222 and at least a portion of the frame 210 .

When the size of the reflection sheet 223 is substantially larger than the size of the frame 210 (as shown in Figure 11 and Figure 12), this step includes: because the reflection sheet 223 is substantially larger than the frame 210, so the reflection sheet 223 has a fold line (not shown in the figure), so that the first part 2231 of the reflection sheet 223 is placed on the substrate 220, and the second part 2232 and the third part 2233 of the reflection sheet 223 are placed on both sides of the frame 210 2101, 2102, this step includes setting at least one adhesive on the lower surface of the first part 2231, the second part 2232 and the third part 2233 of the reflection sheet 223 to fix on the substrate 220 and the frame 210 , or fixed on the substrate 220 by using at least a part of the fixing structure 230 passing through at least a part of the opening 225 of the first part 2231 on the reflection sheet 223 , or a combination thereof. And the opening 224 of the first part 2231 of the reflective sheet 223 accommodates the point light source 221, wherein the opening 225 of at least a part of the first part 2231 of the reflective sheet 223 substantially corresponds to at least one of the substrate 220 At least one of the joint portion of a portion of the opening 222 and at least a portion of the frame 210 .

After the backlight module 200 is assembled, the following steps are included to complete the assembly of the optoelectronic display device 500:

Step S510 : providing an optical film 240 placed on the substrate 220 . Because the top of the upper part 231 of at least a part of the fixing structure 230 is substantially higher than or equal to the top of at least a part of the point light sources 221 of the substrate 220, the upper part 231 of the fixing structure 230 can be used to support the optical film 240 to assemble a backlight module 200.

Step S512 : providing a display panel 506 and placing it on the backlight module 200 to assemble a display module 504 .

Step S514 : providing an electronic module 502 provided with several electronic components 503 , and assembling the electronic module 502 and the display module 504 into an optoelectronic display device 500 , wherein the electronic component 503 is used to drive the display module 504 .

Of course, in order to avoid electric shock caused by electric leakage, at least one of the assembly process of the backlight module 200 and the assembly process of the photoelectric display device 500 needs to include the following steps:

Step S508 : disposing an insulating layer (not shown) on at least one of the opening 222 of at least a part of the substrate 220 and the joint portion 213 of at least a part of the frame 210 .

Furthermore, it must be noted that the substrate 220 of the light source module 212 described in the above-mentioned embodiments of the present invention includes at least one of a circuit (not shown in the figure) and an electronic component (not shown in the figure) to transmit signals at points The light source 221, and the material of the substrate 220 includes rigid materials (such as: thermoplastic polymers, thermosetting polymers, or combinations of the above), flexible materials (such as: thermoplastic polymers, thermosetting polymers, or combinations of the above), or the above-mentioned The combination. For example, if the substrate is made of rigid materials, it can be called a circuit board, and if the substrate is made of flexible materials, it can be called an anisotropic conductive film, but not limited thereto.

Compared with the known technology, the backlight module of the present invention provides a fixing structure with fixing and supporting functions. When the fixing structure fixes the substrate on the frame, at least a part of the upper top of the fixing structure is substantially It is higher than or equal to the tops of several point light sources, so the upper part can be used to support the optical film without an additional supporting device to support the optical film. In addition, because at least a portion of the lower portion of the fixing structure is threaded, it is easier to engage with a corresponding threaded engagement portion on the frame. Therefore, the fixing structure is easier to locate than the conventional screw hole positioning method, and is easy to lock and disassemble, and also has the function of supporting to resist the optical film, which can reduce the cost of additional supporting devices.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes All changes and modifications should belong to the scope of protection of the appended claims of the present invention.

Claims (31)

1. A backlight module, characterized in that it comprises: a frame comprising several joints; A light source module, including at least one substrate, several point light sources arranged on the substrate, and several openings in the substrate; and Several fixing structures, at least a part of the fixing structure includes at least one upper part and at least one connected lower part, wherein the lower part of at least a part of the fixing structure passes through the opening of at least a part of the light source module , engaged with the joint portion of at least a part of the frame, and the top of the upper part of at least a part of the fixing structure is substantially higher than or equal to the top of at least a part of the point light source; Wherein, at least a part of the surface of the lower portion of the fixing structure has threads or the joint portion includes at least one column, and the top view of the at least one column includes a polygon. 2. The backlight module according to claim 1, wherein at least a part of the maximum cross-sectional area of the upper part of the fixing structure is substantially different from a maximum cross-sectional area of at least a part of the lower part of the fixing structure . 3. The backlight module according to claim 1, wherein the maximum cross-sectional area of at least a part of the upper part of the fixing structure is substantially greater than or equal to the maximum cross-sectional area of at least a part of the lower part of the fixing structure area. 4. The backlight module according to claim 1, wherein the maximum cross-sectional area of at least a part of the lower part of the fixing structure is substantially greater than or equal to the maximum cross-sectional area of at least a part of the upper part of the fixing structure area. 5. The backlight module according to claim 1, wherein at least one of the upper part and the lower part of the fixing structure is made of polymer material. 6. The backlight module according to claim 5, wherein the polymer material comprises thermosetting, thermoplastic or a combination thereof. 7. The backlight module according to claim 1, wherein the column comprises a hollow column. 8. The backlight module according to claim 1, wherein the joint part comprises a metal material, a plastic material or a combination thereof. 9. The backlight module according to claim 8, wherein the metal material comprises gold, silver, copper, iron, tin, aluminum, magnesium, titanium, tantalum, molybdenum or a combination thereof. 10. The backlight module according to claim 7, wherein at least a part of the inner surface of the at least one hollow cylinder of the joint part has threads corresponding to at least a part of the lower part. 11. The backlight module according to claim 1, wherein at least a part of the surface of the cylinder has threads corresponding to at least a part of the lower part. 12. The backlight module according to claim 1, further comprising at least one reflective sheet disposed on at least one of the frame and the substrate. 13. The backlight module according to claim 1, further comprising at least one optical film disposed on the frame, wherein at least a part of the fixing structure supports the optical film. 14. The backlight module according to claim 12, wherein the reflective sheet comprises a plurality of openings corresponding to at least one of at least a part of the openings of the substrate and at least a part of the joint part of the frame. 15. The backlight module according to claim 1, further comprising a plurality of insulating layers corresponding to at least a portion of the opening of the substrate and at least a portion of the joint portion of the frame one. 16. The backlight module according to claim 1 or claim 5, wherein the upper part and the lower part of at least a part of the fixing structure are integrally formed. 17. A display module, comprising the backlight module according to claim 1. 18. An optoelectronic display device comprising the backlight module as claimed in claim 1. 19. An optoelectronic display device comprising the display module as claimed in claim 17. 20. A method for manufacturing a backlight module, the backlight module comprising a frame having several joints, a light source module having at least one substrate, several point light sources arranged on the substrate and several openings in the substrate , and several fixed structures, at least a part of the fixed structure includes at least one upper part and at least one connected lower part, it is characterized in that the method includes: placing the light source module on the frame; and The lower part of at least a part of the fixing structure passes through the opening of at least a part of the substrate, and engages with the joint part of at least a part of the frame, wherein at least a part of the fixing structure The top of the upper part is substantially higher than or equal to the top of at least a part of the point light source; wherein at least part of the surface of the lower part of the fixing structure has threads or the joint part includes at least one cylinder, and The top view of the at least one cylinder includes a polygon. 21. The method according to claim 20, further comprising placing at least one reflective sheet on the substrate, and each of the reflective sheets has a plurality of openings substantially corresponding to at least a part of the substrate. At least one of the joints of the opening and at least a portion of the frame. 22. The method according to claim 20, further comprising placing at least one reflective sheet on the frame, and each of the reflective sheets has a plurality of openings substantially corresponding to at least a part of the substrate. At least one of the joint between the opening and at least a portion of the frame. 23. The method of claim 21, further comprising placing at least one reflective sheet on the frame. 24. The method of claim 20, wherein the cylinder comprises a hollow cylinder. 25. The method of claim 20, further comprising placing an optical film on the frame. 26. The method according to claim 21, further comprising disposing at least one adhesive on a part of the lower surface of the reflective sheet. 27. The method according to claim 22, further comprising disposing at least one adhesive on a part of the lower surface of the reflective sheet. 28. The method according to claim 20, further comprising correspondingly disposing a plurality of insulating layers on at least one of the opening of at least a part of the substrate and the joint part of at least a part of the frame. 29. A method for manufacturing a display module, comprising the method for manufacturing a backlight module as claimed in claim 20. 30. A method for manufacturing an optoelectronic display device, comprising the method for manufacturing a backlight module as claimed in claim 20. 31. A method for manufacturing an optoelectronic display device, comprising the method for manufacturing a display module as claimed in claim 29.

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