TWM613863U - Back light module and display device - Google Patents

Abstract

A backlight module includes a back frame, a buffer member and a light guide plate. The back frame has a fixing hole located at a corner. The buffer member is located at the corner of the back frame. The buffer member includes a base, two walls protruding from the base and a fixing post protruding from the base or at least one of the two walls. The buffer member is fixed to the fixing hole of the back frame by the fixing post. The light guide plate is disposed on the back frame and held by the buffer member. A display device including the backlight module is provided. The buffer member of the backlight module and the display device can be easily fixed to the back frame.

Description

Backlight module and display device

The present invention relates to a backlight module and a display device, and particularly relates to a backlight module and a display device.

Currently, a buffer member is arranged between the light guide plate and the back frame in the backlight module to locate and protect the light guide plate. In order to connect the buffer member to the back frame firmly, the surface of the buffer member needs to be corroded by a chemical solvent to increase the roughness, and then tape is attached to the chemical solvent corroded part of the buffer member to make the buffer member adhere to Back frame. The above steps have complicated procedures and high costs. In addition, since the cushioning member occupies a certain area for gluing, it has a relatively large weight.

The present invention provides a backlight module whose buffer can be easily fixed to the back frame.

The present invention provides a display device with the above-mentioned backlight module.

A backlight module created by the new model includes a back frame, a buffer and a light guide plate. The back frame includes fixing holes at the corners. The buffer member is arranged at the corner of the back frame. The buffer member includes a base, two walls standing on the base, and a fixed column extending from the base or at least one of the two walls. The buffer member is fixed to the back frame through the fixed column The fixing holes. The light guide plate is arranged on the back frame and leaned against the buffer member.

A display device created by the invention includes a display panel and a backlight module. The backlight module includes a back frame, a buffer, and a light guide plate. The back frame includes fixing holes at the corners. The buffer member is arranged at the corner of the back frame. The buffer member includes a base, two walls standing on the base, and a fixed column extending from the base or at least one of the two walls. The buffer member is fixed to the back frame through the fixed column The fixing holes. The light guide plate is arranged between the back frame and the display panel and bears against the buffer member.

In an embodiment of the present invention, the above-mentioned back frame includes a back plate and a plurality of first side plates connected to the back plate, the fixing holes are located on the back plate, and the fixing posts of the buffer members extend from the base.

In an embodiment of the present invention, the above-mentioned back frame includes a back plate and a plurality of first side plates connected to the back plate, the fixing holes are located on the first side plates, and the fixing column of the buffer member is from at least one of the two walls. One stretches out.

In an embodiment of the present invention, the aforementioned first side plates include guide grooves extending from the edges to the fixing holes. The widths of the guide grooves are respectively smaller than the diameter of the fixing holes, and the fixing posts are suitable for entering the fixing holes from the guide grooves.

In an embodiment of the present invention, the above-mentioned display device further includes a middle frame, including a plurality of second side plates, and the second side plates at least partially surround the first side plates and the light guide plate, and the second side plates include openings for buffering. The fixing posts of the parts extend into the openings of the second side plates.

In an embodiment of the present invention, the above-mentioned fixing post includes opposite first and second ends, the first end is connected to the base or the wall, the diameter of the second end is larger than the diameter of the fixing hole, and the diameter of the first end The diameter is smaller than the diameter of the fixing hole.

In an embodiment of the present invention, the above-mentioned back frame includes a plurality of first side plates, and grooves are formed at the junction of these first side plates, and the two walls of the buffer member are partially located in the grooves and are covered by these first side plates. The first side plate is limited on multiple wall surfaces beside the groove.

Based on the above, the back frame of the backlight module created by the present invention includes fixing holes at the corners, and the buffer includes fixing posts extending from the base or two walls. The buffer member is fixed to the back frame by squeezing and fixing the fixing column to the fixing hole on the back frame. Since it does not need to be fixed by gluing, many processes are reduced, and the size and weight of the buffer can be reduced, thereby reducing the cost.

Fig. 1 is a schematic side view of a display device according to an embodiment of the present invention. Please refer to FIG. 1, the display device 10 of this embodiment includes a display panel 20 and a backlight module 100 disposed under the display panel 20. In this embodiment, the back frame 110 (marked in FIG. 2) and the buffer 120 (marked in FIG. 2) of the backlight module 100 have a special design, and the buffer can be easily and inexpensively 120 is fixed on the back frame 110, and the buffer 120 can also have a smaller size and weight. This will be explained below.

FIG. 2 is a partial exploded schematic diagram of a back frame and a buffer member of a backlight module according to an embodiment of the invention. FIG. 3 is a schematic diagram of a buffer member of the backlight module of FIG. 2. FIG. 4 is a schematic diagram of FIG. 3 from another perspective. FIG. 5 is a schematic diagram of arranging the buffer member on the back frame of FIG. 2. FIG. 6 is a schematic diagram of arranging the light guide plate on the buffer member of FIG. 5.

Please refer to FIGS. 2 to 6. In this embodiment, the backlight module 100 includes a back frame 110, a buffer 120 and a light guide plate 130 (FIG. 6 ). In this embodiment, the back frame 110 may be, for example, a long box, but it is not limited thereto. It should be noted that, in order to clearly show the details, only one corner of the back frame 110 is shown in the figure. In fact, the back frame 110 may have multiple corners. All corners are the same as or close to those shown in the figure.

The back frame 110 includes fixing holes 114 at the corners (FIG. 2 ). In this embodiment, the back frame 110 includes a back plate 111 (FIG. 2) and a plurality of first side plates 112 connected to the back plate 111, and the fixing holes 114 are located on the back plate 111.

The buffer 120 is disposed at the corner of the back frame 110. The buffer member 120 includes a base 121, two walls 122 standing on the base 121, and a fixing column 123 extending from at least one of the base 121 or the two walls 122. In this embodiment, a groove 115 is formed at the junction of the two first side plates 112 of the back frame 110. When the buffer member 120 is disposed on the back frame 110, the two walls 122 of the buffer member 120 are partially located in the groove 115 Inside.

As shown in FIGS. 3 and 4, in this embodiment, the fixing post 123 of the buffer member 120 extends from the base 121. The fixing column 123 includes a first end 124 and a second end 125 opposite to each other. The first end 124 is connected to the base 121 or at least one of the two walls 122. The second end 125 has a hemispherical shape, but it is not limited thereto. In this embodiment, the diameter D2 (FIG. 3) of the second end 125 is larger than the diameter D3 (FIG. 2) of the fixing hole 114, and the diameter D1 (FIG. 3) of the first end 124 is smaller than the diameter D3 of the fixing hole 114.

The buffer member 120 is made of a flexible material such as rubber, silicon rubber, high-density foam, etc., but the material of the buffer member 120 is not limited thereto. In this embodiment, because the buffer member 120 can be squeezed and deformed and then restored, when the buffer member 120 is to be fixed to the back frame 110, only the buffer member 120 needs to be pressed against the fixing hole 114 of the back frame 110, and the buffer member 120 The second end 125 of the fixing post 123 is squeezed and deformed, and passes through the fixing hole 114. After that, the second end 125 of the fixing column 123 expands and returns to its original shape, so that the buffer member 120 is not easily detached from the back frame 110. In this way, the buffer member 120 can be fixed to the fixing hole 114 on the back frame 110 through the fixing post 123.

In addition, as shown in FIG. 5, the buffer member 120 is restricted by the two wall surfaces 116 of the two first side plates 112 beside the groove 115. Since the diameter D2 of the second end 125 of the fixing post 123 is greater than the diameter D3 of the fixing hole 114, the buffer 120 can be restricted in the Z direction as shown in FIG. The wall 116 allows the buffer 120 to be restricted in the X and Y directions shown in FIG. 5. Therefore, the buffer 120 can be firmly fixed to the back frame 110.

After the buffer member 120 is installed on the back frame 110, as shown in FIG. 6, the light guide plate 130 is disposed on the back frame 110 and can be supported on the buffer member 120, so that the light guide plate 130 is disposed on the back frame 110 (FIG. 2 ) And the display panel 20 (Figure 1). The two walls 122 of the buffer member 120 can be used to limit the movement of the light guide plate 130 in the X and Y directions. The base 121 of the buffer member 120 can support the light guide plate 130 so that the light guide plate 130 does not directly contact the back plate 111 and avoids the light guide plate. 130 wear.

Since the buffer member 120 does not need to be fixed to the back frame 110 by gluing, chemical solvents are used in the conventional process to produce the rough surface of the buffer member and the process of sticking tape on the rough surface can be omitted, which reduces a lot. Process and production time. In addition, since the buffer member 120 does not need to have such a large bonding area, the size and weight of the buffer member 120 can also be reduced, thereby reducing the cost.

FIG. 7 is a partial exploded schematic diagram of a back frame and a buffer member of a backlight module according to another embodiment of the present invention. FIG. 8 is a schematic diagram of a buffer member of the backlight module of FIG. 7. FIG. 9 is a partial schematic diagram of the first side plate of the backlight module of FIG. 7. FIG. 10 is a partial schematic diagram of arranging the buffer and the light guide plate on the back frame of FIG. 7. FIG. 11 is a schematic diagram of FIG. 10 from another perspective.

Referring to FIGS. 7 to 11, in this embodiment, the fixing holes 114 of the back frame 110 a are located on the first side plates 112. Specifically, the two first side plates 112 have a fixing hole 114 respectively. As shown in FIG. 8, the buffer member 120 a has two fixed posts 123, and the two fixed posts 123 respectively extend from the two walls 122. However, it is not limited to this. In one embodiment (not shown), the buffer member has a fixed column extending from the intersection of the two walls.

In this embodiment, the diameter D2 (FIG. 8) of the second end 125a of the fixing post 123 of the buffer 120a is greater than the diameter D3 (Fig. 9) of the fixing hole 114, and the diameter D1 ( FIG. 8) is smaller than the diameter D3 of the fixing hole 114. In addition, as shown in FIG. 9, in this embodiment, the first side plate 112 includes two guide grooves 113 extending from the edge to the two fixing holes 114, the width W of the guide groove 113 is smaller than the diameter D3 of the fixing hole 114, and the guide groove The width W of 113 is smaller than the diameter D1 of the first end 124.

When the buffer 120a is to be fixed to the back frame 110a, the first end 124 of the fixed post 123 of the buffer 120a is pressed into the guide groove 113 of the back frame 110, and the first end 124 of the fixed post 123 will be pressed It deforms and passes through the guide groove 113 until it enters the fixing hole 114. Thereafter, since the diameter D3 of the fixing hole 114 is greater than the diameter D1 of the first end 124, the first end 124 of the buffer member 120a can expand and return to its original shape. Moreover, since the diameter of the first end 124 of the fixing post 123 is greater than the width W of the guide groove 113, the buffer 120a is restricted in the Z direction shown in FIG.

In addition, since the diameter D2 of the second end 125a of the fixing post 123 is greater than the diameter D3 of the fixing hole 114, the buffer 120a is restricted in the X and Y directions shown in FIG. In addition, the two wall surfaces 116 of the two first side plates 112 of the back frame 110a beside the groove 115 can make the buffer 120a be restricted in the X and Y directions shown in FIG. 10. Therefore, the buffer 120a can be firmly fixed to the back frame 110a.

Fig. 12 is a partial schematic diagram of the middle frame being arranged on the back frame of Fig. 10. Please refer to FIG. 12. In this embodiment, the display device 10 (FIG. 1) further includes a middle frame 140 disposed on the back frame 110 a (FIG. 7 ). The middle frame 140 may be a plastic frame, the material of which is, for example, PC, but it is not limited thereto.

The middle frame 140 includes a plurality of second side plates 142. With reference to FIGS. 10 and 12, it can be seen that the second side plates 142 at least partially surround the first side plates 112 (FIG. 10) and the light guide plate 130 (FIG. 10 ). The second side plates 142 include a plurality of openings 144. In this embodiment, the shape of the opening 144 is, for example, an arch shape, and the number and position of the opening 144 correspond to the number and position of the buffer 120a, but it is not limited thereto.

When the middle frame 140 is disposed on the back frame 110a and the light guide plate 130, the second end 125a of the fixing post 123 of the buffer 120a extends into the opening 144 of the second side plate 142 without interfering with the middle frame 140. In addition, in this embodiment, the second end 125a of the fixing column 123 is flat to reduce the thickness. The second end 125a of the fixing post 123 does not protrude from the outer surface of the middle frame 140 to avoid interference with external objects. Therefore, the buffer 120a can not only be quickly and conveniently installed on the back frame 110, but also does not interfere with the external structure, and does not affect the relationship with the external structure.

In summary, the back frame of the backlight module created by the present invention includes fixing holes at the corners, and the buffer includes fixing posts extending from the base or two walls. The buffer member is fixed to the back frame by squeezing and fixing the fixing column to the fixing hole on the back frame. Because it does not need to be fixed by gluing, many processes are reduced, and the size and weight of the buffer can be reduced, thereby reducing the cost.

D1, D2, D3: diameter W: width X, Y, Z: coordinates 10: Display device 20: display panel 100: Backlight module 110, 110a: back frame 111: Backplane 112: The first side panel 113: Guide Ditch 114: fixed hole 115: Groove 116: Wall 120, 120a: buffer 121: Base 122: Wall 123: fixed column 124: first end 125, 125a: second end 130: light guide plate 140: middle frame 142: second side panel 144: open

Fig. 1 is a schematic side view of a display device according to an embodiment of the present invention. FIG. 2 is a partial exploded schematic diagram of a back frame and a buffer member of a backlight module according to an embodiment of the invention. FIG. 3 is a schematic diagram of a buffer member of the backlight module of FIG. 2. FIG. 4 is a schematic diagram of FIG. 3 from another perspective. FIG. 5 is a schematic diagram of arranging the buffer member on the back frame of FIG. 2. FIG. 6 is a schematic diagram of arranging the light guide plate on the buffer member of FIG. 5. FIG. 7 is a partial exploded schematic diagram of a back frame and a buffer member of a backlight module according to another embodiment of the present invention. FIG. 8 is a schematic diagram of a buffer member of the backlight module of FIG. 7. FIG. 9 is a partial schematic diagram of the first side plate of the backlight module of FIG. 7. FIG. 10 is a partial schematic diagram of arranging the buffer and the light guide plate on the back frame of FIG. 7. FIG. 11 is a schematic diagram of FIG. 10 from another perspective. Fig. 12 is a partial schematic diagram of the middle frame being arranged on the back frame of Fig. 10.

110: back frame

111: Backplane

112: The first side panel

114: fixed hole

115: Groove

116: Wall

120: Buffer

121: Base

122: Wall

123: fixed column

124: first end

125: second end

D3: Diameter

X, Y, Z: coordinates

Claims (14)

A backlight module includes: A back frame, including a fixing hole at a corner; A cushioning member arranged at the corner of the back frame, the cushioning member including a base, two walls standing on the base, and a fixing column extending from the base or at least one of the two walls, The buffer member is fixed to the fixing hole on the back frame through the fixing post; and A light guide plate is arranged on the back frame and leaned against the buffer member. The backlight module according to claim 1, wherein the back frame includes a back plate and a plurality of first side plates connected to the back plate, the fixing hole is located on the back plate, and the fixing post of the buffer member extends from the The base stretches out. The backlight module of claim 1, wherein the back frame includes a back plate and a plurality of first side plates connected to the back plate, the fixing holes are located on the first side plates, and the fixing post of the buffer member It extends from at least one of the two walls. The backlight module according to claim 3, wherein the first side plates include a guide groove extending from the edge to the fixing hole, the width of the guide groove is smaller than the diameter of the fixing hole, and the fixing post is suitable for guiding from the guide hole. The groove enters the fixing hole. The backlight module as described in claim 3 further includes: A middle frame includes a plurality of second side plates, the second side plates at least partially surround the first side plates and the light guide plate, and the second side plates include an opening, and the fixing post of the buffer member extends into the In the opening of the second side plate. The backlight module according to claim 1, wherein the fixing column includes a first end and a second end opposite to each other, the first end is connected to the base or the two walls, and the diameter of the second end is larger than that of the fixing The diameter of the hole, and the diameter of the first end is smaller than the diameter of the fixing hole. The backlight module of claim 1, wherein the back frame includes a plurality of first side plates, and a groove is formed at the junction of the first side plates, and the two walls of the buffer member are partially located in the recess Inside the groove and restricted by the walls of the first side plates beside the groove. A display device includes: A display panel; and A backlight module, including: A back frame, including a fixing hole at a corner; A cushioning member arranged at the corner of the back frame, the cushioning member including a base, two walls standing on the base, and a fixing column extending from the base or at least one of the two walls, The buffer member is fixed to the fixing hole on the back frame through the fixing post; and A light guide plate is arranged between the back frame and the display panel and supports the buffer member. The display device according to claim 8, wherein the back frame includes a back plate and a plurality of first side plates connected to the back plate, the fixing hole is located on the back plate, and the fixing post of the buffer member extends from the base Stretch out. The display device according to claim 8, wherein the back frame includes a back plate and a plurality of first side plates connected to the back plate, the fixing holes are located on the first side plates, and the fixing post of the buffer member is from At least one of the two walls extends out. The display device according to claim 10, wherein the first side plates include a guide groove extending from the edge to the fixing hole, the width of the guide groove is smaller than the diameter of the fixing hole, and the fixing column is adapted to enter from the guide groove The fixing hole. The display device according to claim 10 further includes: A middle frame includes a plurality of second side plates, the second side plates at least partially surround the first side plates and the light guide plate, and the second side plates include an opening, and the fixing post of the buffer member extends into the In the opening of the second side plate. The display device according to claim 8, wherein the fixing column includes a first end and a second end opposite to each other, the first end is connected to the base or the two walls, and the diameter of the second end is larger than the fixing hole The diameter of the first end is smaller than the diameter of the fixing hole. The display device according to claim 8, wherein the back frame includes a plurality of first side plates, and a groove is formed at the junction of the first side plates, and the two walls of the buffer member are partially located in the groove And is limited by the multiple wall surfaces of the first side plates beside the groove.

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