TWI401388B - Light source holder and light source module, back light module and liquid crystal display having the same - Google Patents

Description

Light source fixing frame and light source module, backlight module and liquid crystal display having the same

The present invention relates to a liquid crystal display, and more particularly to a liquid crystal display having a light source holder.

With the popularity of high-definition video technology, liquid crystal display devices (LCD devices) are gradually becoming the most commonly used flat display devices for listeners. The liquid crystal display has the advantages of thin volume, light weight, low radiation amount, and the liquid crystal display can replace the display device manufactured by a conventional cathode ray tube (CRT).

In a liquid crystal display, the light-emitting element is a light source that provides a liquid crystal display, and the light-emitting element is also the most important power-consuming element of the display device. Conventional light-emitting elements are mainly Cold-Cathode Fluorescent Tubes (CCFLs) and Light Emitting Diodes (LEDs). However, since the cold cathode fluorescent lamp has higher power consumption, higher heat generation, and toxic substances containing mercury vapor in the lamp, the cold cathode fluorescent lamp has been gradually eliminated by the liquid crystal display industry.

On the contrary, the light-emitting diode has characteristics of low power consumption, low heat generation, and mercury-free vapor pollutants, and thus the light-emitting diode has been widely used by liquid crystal display manufacturers. When the light-emitting diode is used as the light-emitting component of the backlight module, the backlight module can be divided into a direct-lit type (Direct Illumination-type) backlight module and the position of the light-emitting diode in the backlight module. Edge Illumination-type backlight module in two ways. Among them, the liquid crystal display using the white light emitting diode and the side backlight module is the most commonly used light source and light source setting method. The conventional side-lit backlight module generally uses the following two methods to fix the light-emitting diode in the light source holder of the backlight module, so as to avoid the unevenness of the light source generated by the backlight module caused by the shaking of the light-emitting diode light source. , or the problem of reduced brightness of the LCD display.

Please refer to "Figure 1", which is a schematic diagram of the conventional application of the light source of the light source to the light source holder. The light-emitting diode light source 10 has a plurality of light-emitting diodes 12 and a circuit board 11 carrying the light-emitting diodes 12, and the light-emitting diode light source 10 is located on the light source holder 20. The light emitting diode light source 10 can also be referred to as a light emitting diode light bar or a light strip (LED Light Bar), or simply as a light bar or a light bar, and the circuit board 11 can be a printed circuit. A printed circuit board (PCB) or a flexible printed circuit board (FPC). The light source holder 20 can also be called a reflection because it usually has the function of reflecting the light of the LED 12 . A cover, or simply a light cover.

In addition, the light emitting diode light source 10 is adhered to the light source holder 20 by a double side tape 30. However, the disadvantage is that when the constructor has to remove the light-emitting diode light source 10 from the light source holder 20, the circuit board 11 of the light-emitting diode light source 10 will be difficult to be detached from the double-sided tape 30. Even the constructor is likely to damage the circuit board 11 and/or the light emitting diode 12 during the disassembly process, resulting in the liquid crystal display having to replace the new light emitting diode light source 10, adding additional manufacturing or maintenance costs.

In addition, the prior art proposes another light source holder that fixes the light emitting diode source. Please refer to "Figure 2", which is a schematic diagram of a conventional light-emitting diode source and a light source holder. The light source holder 50 has a side portion 51, a top portion 52, and a bottom side portion 53. The constructor constructs the light source holder 50 to create a recess 52a on the top 52 of the light source holder 50. In this way, the light source holder 50 can use the recess portion 52a and the bottom side 53 to jointly clamp and fix the circuit board 11.

However, in order to firmly fix the circuit board 110 in the light source holder 50, the height H of the circuit board 110 needs to be equal to or smaller than the distance from the recess portion 52a to the bottom side 53 to tightly clamp the circuit board 110 to the recess portion 52a. The accommodation space between the bottom side 53 and the bottom side 53. However, the design of the light source holder 50 having the recessed portion 52a tends to cause the circuit board 110 to easily deform or even break when the circuit board 110 is inserted into the accommodating space between the recessed portion 52a and the bottom side 53. Therefore, the thickness of the circuit board 110 loaded in the light source holder 50 is usually designed to be 0.8 mm or more. However, the thickness of such a circuit board 110 not only causes an increase in the volume of the backlight module, but also increases the manufacturing cost of the circuit board 110.

Based on the above, it is necessary to propose a solution for fixing the light-emitting diode light source in the light source holder and avoiding damage to the light-emitting diode light source when the light-emitting diode light source and the light source holder are assembled or disassembled.

In view of the above problems, the present invention provides a light source fixing frame, a light source module having the same, and a liquid crystal display, which can damage the circuit board structure when fixing or removing the circuit board from the light source fixing frame. The problem.

An embodiment of the invention provides a light source fixing frame comprising a bottom plate, a side wall, a top plate, a fixed wall and a pressing plate. The structure of the light source fixing frame is such that the side wall is erected on one side of the bottom plate, and the side wall comprises a bearing surface, the top plate can be erected on the bearing surface, and the fixed wall extends from the top plate to the bottom plate, and the pressure plate is connected to the fixed wall and away from the side wall The direction extends. The fixed wall includes a projection that protrudes toward the side wall. In other words, the side wall is bent and connected to the bottom plate, the top plate is bent and connected to the side wall, the fixed wall is bent and connected to the top plate, and the pressure plate is bent and connected to the fixed wall, and is located between the bottom plate and the protruding portion.

The invention discloses a light source module, comprising a light emitting diode light source and the above light source fixing frame. The light-emitting diode light source has a circuit board, and the plurality of light-emitting diodes are arranged on the circuit board in a straight line, and at least one gap is formed between the plurality of light-emitting diodes. Furthermore, the circuit board is disposed on the carrying surface and located between the bottom plate and the top plate. The fixed wall includes a protruding portion protruding toward the side wall and a top end of the protruding portion abuts against the circuit board, and the top end is located between the light emitting diode and the top plate.

The invention discloses a method for assembling a light source module. First, a light source holder is provided, wherein the fixed wall has a suspension portion, and the suspension portion is hollowed around, leaving only a part of the connection suspension portion and other portions of the fixed wall. Next, the above-mentioned light-emitting diode light source is placed between the fixed wall and the side wall. Finally, the suspension portion is pressed to deform the suspension portion toward the circuit board to become a protruding portion protruding toward the side wall, so that one of the top ends of the protruding portion abuts against the circuit board and is common with the side wall The circuit board is clamped and the top end is located between the light emitting diodes and the top plate.

The invention discloses a backlight module, comprising the above-mentioned light emitting diode light source, the above light source fixing frame, a light guiding plate, a bearing frame and a multilayer optical film. The light guide plate is disposed between the pressure plate and the bottom plate of the light source holder, and the load frame is disposed between the pressure plate and the fixed wall of the light source holder, and the multilayer optical film is disposed in the carrier frame and disposed on the light guide plate.

The invention discloses a liquid crystal display, comprising the above backlight module and a liquid crystal panel. The liquid crystal panel is disposed on the carrying frame, and the carrying frame surrounds the periphery of the liquid crystal panel. Preferably, the liquid crystal display further comprises a front case, wherein the liquid crystal display panel is fixed between the front case and the backlight module. The front case includes, for example, a top portion and a side portion bent to the top portion, and the top portion covers the liquid crystal panel, the carrier frame, and the top plate. The top is engaged with the carrier frame, and the side covers the side wall and is engaged with the side wall.

Based on the above, in the above-described embodiment of the present invention, since the light source fixing frame holds the circuit board therebetween by the projections and the side walls. Therefore, the circuit board does not need to be increased in thickness or is fixed to the above-mentioned light source holder via a double-sided tape as compared with the prior art. Therefore, when the constructor wants to remove the circuit board from the light source holder, the structure of the above-mentioned light source fixing frame can prevent the constructor from damaging the circuit board.

The above described features and advantages of the present invention will be more apparent from the following description.

Please refer to FIG. 3A and FIG. 3B , which are respectively a perspective view of a light source module according to an embodiment of the present invention and a schematic diagram of the arrangement of the light emitting diode light source of the present invention. The light source module 1a includes a light emitting diode light source 100 and a light source fixing frame 200. The light emitting diode light source 100 includes a circuit board 110 and a plurality of light emitting diodes 120. The circuit board 110 has a surface 112 and a surface 114 opposite to each other. The light emitting diodes 120 are sequentially arranged on the surface 112 along a straight line, and at least one gap A is formed between the plurality of light emitting diodes 120. Each of the LEDs 120 is electrically connected to the circuit board 110.

The light source fixing frame 200 has a bottom plate 210, a side wall 220, a top plate 230, a fixed wall 240 and a pressing plate 250. The bottom plate 210 carries the circuit board 110, and the side wall 220 stands on one side of the bottom plate 210. In other words, the side wall 220 is bent and connected to one side of the bottom plate 210. The side wall 220 includes a bearing surface 222, and the surface 114 of the circuit board 110 is disposed on the bearing surface 222. In other words, the surface 114 is in contact with the bearing surface 222. The top plate 230 is erected on the bearing surface 222 of the side wall 220, and the top plate 230 is located on the other side of the circuit board 110 relative to the bottom plate 210. That is, the top plate 230 is bent and connected to the side wall 220 and corresponds to the bottom plate 210, and the circuit board 110 is located between the bottom plate 210 and the top plate 230. The fixed wall 240 is located on the other side of the top plate 230 opposite to the side wall 220, and the fixed wall 240 extends in the direction of the bottom plate 210. More preferably, the fixed wall 240 extends toward the bottom plate 210 in a direction D1 parallel to the side wall 220. That is, the fixed wall 240 is bent and connected to the top plate 230. Therefore, the circuit board 110 is located between the side wall 220 and the fixed wall 240. In addition, one end 242 of the fixed wall 240 is located above the end surface 122 of the top surface 230 of the light emitting diode 120, so that the fixed wall 240 does not touch or cover the light emitting diode 120, so as to prevent the fixed wall 240 from being shielded from light. The light of the diode 120. Press plate 250 extends from the end 242 of the fixed wall 240 in a direction D2 away from the side wall 220. In other words, the pressure plate 250 is bent and connected to the fixed wall 240 and parallel to the bottom plate 210.

The fixed wall 240 has a protruding portion 244a, and the protruding portion 244a protrudes toward the side wall 220, and the end of the protruding portion 244a has a top end 246. The top end 246 abuts against the surface 112 of the circuit board 110, and the top end 246 is located between the end surface 122 of the light emitting diode 120 and the top plate 230. Based on the structure of the fixed wall 240 having the protruding portion 244a, when the constructor places the light emitting diode light source 100 into the light source fixing frame 200, it is only necessary to fix the circuit board 110 to the top end 246 and the side wall 220 of the protruding portion 244a. between. In this way, the embodiment can limit the movement of the circuit board 110 in the direction D2 by the top end 246 and the side wall 220. Moreover, the structure of clamping the circuit board 110 via the protruding portion 244a and the side wall 220 can prevent the damage of the circuit board 110 caused by the staff when assembling or removing the circuit board 110 in the prior art. influences. In this embodiment, the light source holder 200 can be made of a material having elasticity, such as metal or plastic, so the constructor can first pull the platen 250 slightly in the direction D2 to the protrusion 244a and the side wall. 220 forms a large accommodating space, after the light-emitting diode light source 100 is placed, to prevent the protruding portion 244a from scratching or damaging the circuit board 110, and then putting the pressing plate 250 back, the protruding portion can be used The elastic restoring force of 244a securely fixes the light-emitting diode light source 100.

In addition, in the fabrication, the error values of the predetermined positions (not shown) of the protrusions 244a and the LEDs 120 in the direction D1 are approximately plus or minus 0.1 millimeters (mm). In more detail, the end surface 122 of the light-emitting diode 120 may rise or fall by 0.1 mm (mm) in the direction D1 due to an error in setting, and a bottom side 247 of the protruding portion 244a may also be in the direction due to an error in setting. D1 rises or falls by 0.1 mm (mm). Therefore, a distance between the bottom side 247 of the protruding portion 244a and the end surface 122 of the light emitting diode 120 must be left in the direction D1 by about 0.2 millimeters (mm) to avoid the protruding portion 244a and the light emitting diode 120. Interference with each other due to construction errors. Moreover, the shape of the protruding portion 244a may be a cylindrical shape, and the top end 246 is abutting against the edge of the circuit board 110 as a curved surface having a continuous slope. In order to prevent the assembler from damaging the circuit board 110 at the edge of the excessively sharp projection portion 244a when the light-emitting diode light source 100 and the light source holder 200 are assembled. In addition, the constructor may also provide a plurality of protruding portions 244a, 244b, and 244c on the fixed wall 240 to strengthen the stability of the protruding portions 244a, 244b, and 244c and the side wall 220 sandwiching the circuit board 110.

The material of the light source holder 200 of the present invention may be a metal plate member or a plastic plate member. Please refer to "4A" and "4B", which are respectively schematic diagrams of the manufacturing process of the light source fixing frame of the present invention. In the "Fig. 4A", the material of the light source fixing frame 200 is a metal plate member M1, and the constructor can press the metal plate member M1 at a predetermined position by press working, for example, stamping on the metal plate member M1. A plurality of projections 244a, 244b, and 244c are formed. The projections 244a, 244b, and 244c protrude from the metal plate member M1. Thereafter, as shown in "Fig. 4B", the constructor bends the metal plate member M1 along the crease F1 to the shape of the light source fixing frame 200 of the invention. In addition, in other embodiments, the protrusions (not shown) may also be solid posts. Moreover, the constructor can fix the protruding portion on the predetermined position of the metal plate member by sticking or welding, and bend the metal plate member into the light source fixing frame. On the other hand, when the light source fixing frame is a plastic plate member (not shown), the constructor can use the injection molding method to form the plastic plate member into the light source fixing frame and the protruding portion of the invention. That is, the present invention does not particularly limit the order and method of forming the plurality of projections 244a, 244b, and 244c.

In addition to the above-described light source fixing frame 200 and the light source module 1a made of the light source fixing frame 200, according to other embodiments of the present invention, a backlight module can be further fabricated by using the light source module 1a. Please refer to FIG. 5 , which is a perspective view of a backlight module according to another embodiment of the present invention. The backlight module 1000 includes the above-mentioned light emitting diode light source 100, the above-mentioned light source fixing frame 200, a light guide plate 300, a bearing frame 400 and a multilayer optical film 500. In this embodiment, the carrying frame 400 is generally made of a plastic material, and thus may be referred to as a plastic frame.

The light guide plate 300 is disposed and sandwiched between the pressure plate 250 and the bottom plate 210, and the pressure plate 250 is directly in contact with the light guide plate 300, so that the light guide plate 300 is sandwiched between the pressure plate 250 and the bottom plate 210. One side of the carrying frame 400 is disposed on the pressing plate 250 of the light source holder 200, and the other side of the carrying frame 400 contacts and corresponds to the fixed wall 240. The optical film 500 is disposed on the light guide plate 300 and disposed inside the carrier frame 400. In more detail, the carrier frame 400 surrounds the periphery of the optical film 500.

In addition, since the circuit board 110 is sandwiched between the top end 246 of the protruding portion 244a and the side wall 220, the light emitting diode 120 disposed on the circuit board 110 can stably correspond to the light guide plate 300. In a preferred embodiment, the upper edge of a light incident surface 310 of the light guide plate 300 corresponds to a lower edge of a light exit surface 124 of the LED body 120. In fact, a thickness T1 of the light guide plate 300 is about 1.4 millimeters (mm) and is equal to a length L1 after the package of the light emitting diode 120. Therefore, the light guide plate 300 can completely inject the light emitted by the light emitting diode 120 into the light guide plate 300 via the light incident surface 310.

Furthermore, the backlight module 1000 further includes a reflective sheet 600, wherein the reflective sheet 600 is disposed and sandwiched between the light guide plate 300 and the bottom plate 210. The reflective sheet 600 is used to reflect the light entering the light guide plate 300 from the light incident surface 310 and incident on the bottom plate 210 to reflect the light toward the optical film 500, thereby improving the light utilization efficiency of the backlight module 1000.

Please refer to FIG. 6 , which is a schematic cross-sectional view of the liquid crystal display of the present invention. The liquid crystal display device 2000 includes the above-mentioned backlight module 1000 and a liquid crystal panel composed of an active array substrate 700 and a color filter substrate 910. The active array substrate 700 and the color filter substrate 910 correspond to each other, and are sealed with a sealant ( The bonding does not constitute a liquid crystal panel. The active array substrate 700 of the liquid crystal panel is disposed on the carrying frame 400 of the backlight module 1000, and the carrying frame 400 surrounds the liquid crystal panel formed by the active array substrate 700 and the color filter substrate 910.

The color filter substrate 910 is used to display three primary colors such as red, blue, and green for the liquid crystal panel. Preferably, the liquid crystal display 2000 includes an upper polarizer 920, and the upper polarizer 920 is disposed on the color filter substrate 910. More preferably, the liquid crystal display 2000 further includes a lower polarizer 930, and the lower polarizer 930 is located between the active array substrate 700 of the liquid crystal panel and the multilayer optical film 500. The polarization directions of the upper polarizer 920 and the lower polarizer 930 intersect at an angle (not shown). Therefore, the upper polarizer 920 and the lower polarizer 930 convert the non-polar light of the backlight module 1000 into polarized light, and generate a color and light image pattern by the color filter substrate 910 and the active array substrate 700.

In addition, the liquid crystal display 2000 includes a front case 800. The front case 800 includes a top portion 810 and a side portion 820, and the side portion 820 is bent and coupled to one side of the top portion 810. Specifically, the side portion 820 is disposed on one side of the top portion 810, and the side portion 820 of the front case 800 covers the side wall 220 of the light source holder 200. The top 810 is disposed on the upper polarizer 920, the active array substrate 700 of the liquid crystal panel, the carrying frame 400, and the top plate 230, and the top 810 and the carrying frame 400 together share the upper polarizer 920, the color filter substrate 910, and the active array substrate 700. Clamped between the two. Moreover, the side portion 820 has a notch 822 and a trapezoidal convex hull 224 protrudes from the side wall 220 of the light source holder 200. The trapezoidal convex hull 224 corresponds to and is engaged with the notch 822. The trapezoidal convex hull 224 has a beveled surface 224a disposed on the side wall 220 and an upright surface 224b disposed perpendicularly to the side wall 220. The inclined surface 224a and the side wall 220 are at an angle θ, which is preferably an obtuse angle. Due to the obtuse angle θ, the inclined surface 224a can be used for the light source holder 200 to be coupled to the front case 800 in a labor-saving manner, and the light source holder 200 can be fixed to the front case 800 by the upright surface 224b in a manner of being engaged. In the present embodiment, the upright surface 224b corresponds to the slope 224a and is at right angles to the side wall 220.

In the foregoing embodiment, only the architecture of one side of the light source module of the present invention will be described. It can be understood that, in other embodiments of the present invention, the light source module can also be located on the opposite or adjacent sides of the liquid crystal display, and even the light source module can be disposed in the liquid crystal display. On the three sides or on the four sides.

Please refer to FIG. 7 , which is a perspective view of a light source module according to another embodiment of the present invention. Different from the foregoing embodiment, the protruding portion 244' is formed in an elongated shape on the fixed wall 240' in the parallel direction of the fixed wall 240'. The elongated protrusions 244 ′ are recessed in the direction of the circuit board 110 along one side of the fixed wall 240 ′ and extend along the arrangement direction of the plurality of LEDs 120 instead of being single or multiple. Cylindrical depressions. The advantage is that when the bottom plate 210, the side wall 220, the top plate 230, the fixed wall 240' and the pressing plate 250 of the light source fixing frame 200' have been formed, the cylindrical protruding portion (such as the protrusion of "3A") is formed. 244a) Easy to make. However, it is worth noting that the recessed areas of the projections 244' also do not affect the electronic components or circuit configurations of the circuit board 110 to avoid damage to the circuit board 110. At the same time, the top end 246' of the protruding portion 244' is abutting against the edge of the circuit board 110 as a curved surface having a continuous slope to prevent the edge of the excessively sharp projection 244' from damaging the circuit board 110.

Please refer to FIG. 8A, which is a perspective view of a light source module according to another embodiment of the present invention. Different from the foregoing embodiment, in the light source module 2a of the present embodiment, the fixed wall 240a has a hanging portion 241a. The periphery of the suspension portion 241a is hollowed out, leaving only a part of the suspension portion 241a and other portions of the fixed wall 240a. For example, the upper and lower sides of the suspension portion 241a are hollowed out, and only the left and right ends are left for connection. Further, the suspension portion 241a can be deformed toward the circuit board 110 by the external force, and then becomes the protruding portion 243a, and the circuit board 110 is held together with the side wall 220a.

"8B" is a schematic view before the suspension portion of "August 8A" is not subjected to compression deformation. Please also refer to "8A" and "8B". In detail, the fixed wall 240a of the present embodiment has two openings 245a, 245b such that the fixed wall 240a forms a strip-shaped suspension portion 241a between the two openings 245a, 245b. The strip-shaped openings 245a, 245b are respectively located on the upper and lower sides of the suspension portion 241a, and the width of the upper strip-shaped opening 245a is larger than the width of the lower strip-shaped opening 245b in order to observe the mounting and fixing of the light-emitting diode light source 100. This allows a large space between the fixed wall 240a of the light source holder 200a and the side wall 220a to accommodate the light emitting diode light source 100, so as to avoid interference with the light source holder 200a when the light emitting diode light source 100 is placed. damage. Here, the present embodiment does not limit the shape of the suspension portion 241a itself or the number or shape of the openings for defining the suspension portion, and the protrusion can be formed by applying pressure to the suspension portion by an external force. The hollow design of the part can be applied to this embodiment.

"8C" is a partial schematic view of the light source holder of "8B" before fabrication. Please also refer to "8B" and "8C". In this embodiment, the material of the light source fixing frame 200a is a metal plate member M2, and the constructor can punch the metal plate member M2 into a two-shaped opening 245a, 245b at a predetermined position. Next, the metal sheet M2 can be bent along the fold F2 to the light source holder 200a of the embodiment. In addition, when the light source fixing frame 200a is a plastic plate (not shown), the constructor can use the injection molding method to form two shapes of openings 245a, 245b on the plastic sheet. That is, the present invention does not particularly limit the order and method of forming the strip openings 245a, 245b.

In addition, in the assembly process of the light source module 2a of the present embodiment, a light source holder 200a is first provided. Next, a light emitting diode light source 100 described above is placed between the fixed wall 240a and the side wall 220a. Finally, the suspension portion 241a is biased by a finger or a jig, and the suspension portion 241a is deformed toward the circuit board 110 to become a projection portion 243a. At the same time, the top end of the protruding portion 243a is abutted against the circuit board 110, so that the circuit board 110 is sandwiched by the protruding portion 230a and the side wall 220. After the LED light source 100 is first mounted to the light source holder 200a, the protrusion 230a and the side wall 220a are clamped together with the circuit board 110, thereby preventing the LED source 100 from being placed in the light source holder. Damage was caused at 200a. In this embodiment, although the number of openings is two, in other embodiments, the number of openings forming or defining the suspension portion may also be single or multiple, as long as it can be in the subsequent process, with a finger or The jig is applied to the suspension portion to deform the suspension portion toward the circuit board to form a projection.

In summary, the light source module disclosed in the present invention has a light source fixing frame that abuts the circuit board between the fixed wall and the side wall by the protruding portion to prevent the light emitting diode from moving and cannot completely complete the light. Into the light guide plate. This can therefore prevent the liquid crystal display from producing an undesirable effect of uneven luminosity or reduced brightness.

Furthermore, in some embodiments, the protrusion is formed by a cylinder machined on the light source holder; and in another embodiment, the protrusion is processed by the light source holder. The suspension portion is formed by the strip opening, and the light source is applied to the suspension portion to deform the light source after being placed in the light source holder. In the present invention, the projections produced in any manner can effectively prevent the damage of the circuit board when the constructor fixes or removes the circuit board in the light source holder.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

1a, 2a. . . Light source module

10,100. . . Light-emitting diode source

11. . . Circuit board

12. . . Light-emitting diode

20, 50. . . Light source holder

30. . . double-sided tape

51. . . Side

52. . . top

52a. . . Depression

53. . . Bottom side

110. . . Circuit board

112, 114. . . surface

120. . . Light-emitting diode

122. . . End face

124. . . Glossy surface

200, 200', 200a. . . Light source holder

210. . . Bottom plate

220, 220a. . . Side wall

222. . . Bearing surface

224. . . Trapezoidal convex

224a. . . Bevel

224b. . . Upright

230. . . roof

240, 240', 240a. . . Fixed wall

241a. . . Suspension

242. . . End

243a. . . Protrusion

244a, 244b, 244c, 244'. . . Protrusion

245a, 245b. . . Strip opening

246, 246'. . . top

247. . . Bottom side

250. . . Press plate

300. . . Light guide

310. . . Glossy surface

400. . . Carrier frame

500. . . Optical diaphragm

600. . . A reflective sheet

700. . . Active array substrate

800. . . Front shell

810. . . top

820. . . Side

822. . . gap

910. . . Color filter substrate

920. . . Upper polarizer

930. . . Lower polarizer

1000. . . Backlight module

2000. . . LCD Monitor

θ. . . angle

A. . . gap

D1, D2. . . direction

F1, F2. . . Polyline

H. . . height

L1. . . length

M1, M2. . . Metal plate

T1. . . thickness

FIG. 1 is a schematic view showing a conventional method of attaching a light-emitting diode light source to a light source holder.

Fig. 2 is a schematic view showing a conventional light source and a light source holder.

FIG. 3A is a perspective view of a light source module according to an embodiment of the invention.

FIG. 3B is a schematic view showing the arrangement of the light-emitting diode light source of the present invention.

4A is a schematic view showing the first manufacturing process of the light source fixing frame of the present invention.

FIG. 4B is a schematic view showing the second manufacturing process of the light source fixing frame of the present invention.

FIG. 5 is a perspective view of a backlight module according to another embodiment of the present invention.

Figure 6 is a schematic cross-sectional view of a liquid crystal display of the present invention.

FIG. 7 is a perspective view of a light source module according to another embodiment of the present invention.

FIG. 8A is a perspective view of a light source module according to another embodiment of the present invention.

Fig. 8B is a schematic view showing the suspension portion of Fig. 8A before being subjected to compression deformation.

Figure 8C is a partial schematic view of the light source holder of Figure 8B before fabrication.

1a. . . Light source module

100. . . Light-emitting diode source

110. . . Circuit board

112, 114. . . surface

120. . . Light-emitting diode

122. . . End face

200. . . Light source holder

210. . . Bottom plate

220. . . Side wall

222. . . Bearing surface

230. . . roof

240. . . Fixed wall

242. . . End

244a, 244b, 244c. . . Protrusion

246. . . top

247. . . Bottom side

250. . . Press plate

D1, D2. . . direction

Claims (18)

A light source module includes: a light emitting diode light source, comprising: a circuit board; a plurality of light emitting diodes arranged along a straight line on the circuit board; a light source fixing frame comprising: a bottom plate; Standing on one side of the bottom plate, the side wall includes a bearing surface, the circuit board is disposed on the bearing surface; a top plate is erected on the bearing surface, wherein the circuit board is located between the bottom plate and the top plate; a fixing wall extending from the top plate to the bottom plate, the fixing wall comprising a protruding portion protruding toward the side wall, a top end of the protruding portion abutting against the circuit board, and the protruding portion The top end is located between the light emitting diodes and the top plate. The light source module of claim 1, further comprising a pressure plate extending from the fixed wall in a direction away from the side wall. The light source module of claim 1, wherein the protrusion has a cylindrical shape. The light source module of claim 1, wherein the fixed wall has a suspension portion, the suspension portion is hollowed out, and only a part of the suspension portion is connected to the suspension portion and other portions of the fixed wall, and the suspension portion is The external force is pressed and deformed toward the circuit board to become the protruding portion, and the circuit board is clamped together with the side wall. The light source module of claim 4, wherein the fixed wall has two openings to form a strip-shaped suspension between the two openings. A method for assembling a light source module includes: providing a light source fixing frame, the light source fixing frame comprising: a bottom plate; a side wall standing on one side of the bottom plate, the side wall comprising a bearing surface; and a top plate standing on the side a mounting wall; a fixed wall extending from the top plate to the bottom plate, the fixed wall having a suspension portion, the suspension portion is hollowed out, leaving only a part of the suspension portion and other parts of the fixed wall; a light-emitting diode light source is disposed between the fixed wall and the side wall, the light-emitting diode light source includes: a circuit board, the bearing surface of the side wall is located between the bottom plate and the top plate; Light-emitting diodes are arranged on the circuit board in a straight line; and the suspension portion is pressed to deform the suspension portion toward the circuit board into a protruding portion protruding toward the side wall, and one of the protruding portions The top end abuts against the circuit board to clamp the circuit board together with the side wall, and the top end of the protruding portion is located between the light emitting diodes and the top plate. The method of assembling a light source module according to claim 6, wherein the method of pressing the suspension portion comprises applying a force to the suspension portion by a finger or a jig. A backlight module includes: a light emitting diode light source, comprising: a circuit board; a plurality of light emitting diodes arranged along a straight line on the circuit board; and a light source fixing frame comprising: a bottom plate; Standing on one side of the bottom plate, the side wall includes a bearing surface, the circuit board is disposed on the bearing surface; a top plate is erected on the bearing surface, wherein the circuit board is located between the bottom plate and the top plate; a wall extending from the top plate to the bottom plate, the fixed wall includes a protruding portion protruding toward the side wall, the protruding portion abutting against the circuit board, and a top end of the protruding portion is located at the bottom Between the light-emitting diodes and the top plates; and a pressure plate extending from the fixed wall in a direction away from the side wall; a light guide plate is sandwiched between the pressure plate and the bottom plate; The light source holder is disposed on the light guide holder; and the multilayer optical film is disposed in the carrier frame and disposed on the light guide plate. A liquid crystal display, comprising: a backlight module, comprising: a light emitting diode light source, comprising: a circuit board; and a plurality of light emitting diodes arranged along the line on the circuit board; a light source fixing frame comprising: a bottom plate; a side wall erected on one side of the bottom plate, the side wall includes a bearing surface, the circuit board is disposed on the bearing surface; a top plate is erected on the bearing surface, wherein the circuit board is located on the bottom plate Between the top plates; a fixed wall extending from the top plate toward the bottom plate, the fixed wall includes a protruding portion protruding toward the side wall, the protruding portion abutting against the circuit board, and the convex portion a top end of the outlet portion is located between the light emitting diodes and the top plate; and a pressing plate extending from the fixing wall away from the side wall; a light guide plate is clamped between the pressing plate and the bottom plate a carrier frame disposed on the light source holder; and a plurality of optical films disposed in the carrier frame and located on the light guide plate; and a liquid crystal panel disposed on the carrier frame. a light source fixing frame comprises: a bottom plate; a side wall bent to be connected to the bottom plate; a top plate bent to be connected to the side wall and corresponding to the bottom plate; a fixed wall bent to be connected to the top plate, and Corresponding to the side wall, the fixed wall includes a protruding portion protruding toward the side wall; and a pressing plate connected to the fixed wall and parallelized with the bottom plate. A light source module comprising: the light source fixing frame as claimed in claim 10; a circuit board inserted in the bottom plate of the light source fixing frame, the side wall, the top plate and the protruding portion of the fixing wall And a plurality of light emitting diodes disposed on the circuit board, the light emitting diodes forming at least one gap therebetween, the protruding portions corresponding to the gap, and the light emitting diode systems are located on the bottom plate Between the projections. The light source module of claim 11, wherein the fixed wall has a suspension portion, the suspension portion is hollowed out, and only a part of the suspension portion is connected to the suspension portion and other portions of the fixed wall, and the suspension portion is The external force is pressed and deformed toward the circuit board to become the protruding portion, and the circuit board is clamped together with the side wall. The light source module of claim 12, wherein the fixed wall has two openings to form a strip-shaped suspension between the two openings. A backlight module, comprising: the light source module according to any one of claim 11 to claim 13; a light guide plate disposed between the pressure plate and the bottom plate and corresponding to the light emitting diodes a carrier frame, one side of which is disposed on the pressure plate of the light source holder and corresponding to the fixed wall; and a plurality of optical films disposed on the light guide plate, and the carrier frame surrounds the optical film . A liquid crystal display comprising: a backlight module as claimed in claim 14; a liquid crystal panel disposed on the carrying frame of the backlight module, wherein the carrying frame surrounds the liquid crystal panel; and a front case comprising The top portion and the one side portion are bent and connected to the top portion, and the top portion covers the liquid crystal panel, the carrying frame, the top plate, and is engaged with the carrying frame, the side portion covers the side wall, and the side is The wall is stuck. The liquid crystal display of claim 15, wherein the light source holder further comprises a trapezoidal convex hull protruding outwardly from the side wall. The liquid crystal display of claim 16, wherein the side portion of the front case has a notch that is engaged with the trapezoidal convex hull of the light source holder. The liquid crystal display according to claim 17, wherein the protruding portion is an elongated protruding portion and extends along an arrangement direction of the light emitting diodes.