JP3217509U - Backlight module and display device - Google Patents

Abstract

Provided are a backlight module and a display device in which the overall thickness is reduced. A backlight module includes a frame 2, a light source 3 provided in the frame 2, a light guide plate 4 facing the light source, and a first optical unit provided above the light guide plate 4 and having a slot. A film 51, a second optical film 52, a first adhesive member 61, and a plurality of second adhesive members 62 are provided. The frame 2 has a plurality of protrusions. The first adhesive member 61 has a long shape, and is provided on a part of the plurality of protrusions. The first adhesive member 61 is exposed in the slot 511 of the first optical film 51, so that the protrusions and the second adhesive member 61 are provided. Bonded to the optical film 52. The second adhesive members 62 are individually provided on the protrusions, and the protrusions on which the first adhesive member 61 is not provided are bonded to the protrusions and the first optical film 51. [Selection] Figure 1

Description

  The present invention relates to a light source module, and more particularly to application of a backlight module and a backlight module in a display device.

  As a form in which the optical film or the light guide plate is fixed to the plastic frame, a form in which rectangular projections are mainly provided on both sides of the light guide plate or the optical film and concave grooves corresponding to the projections are provided in the plastic frame is known. . In this way, the light guide plate or the optical film can be positioned on the plastic frame by fitting the protrusion into the groove and attaching the plastic frame and the protrusion with tape.

  However, such a structure does not match the trend of narrow frame design of backlight modules and display devices. Furthermore, the method of attaching a tape to the protrusion also increases the overall thickness of the backlight module and the display device.

  Accordingly, an object of the present invention is to provide a backlight module that can satisfy a design requirement for thinning with a narrow frame.

  The backlight module of the present invention includes a frame, a light source provided in the frame, a light guide plate provided in the frame and facing the light source, and a first optical film provided above the light guide plate. And a second optical film provided above the first optical film, a first adhesive member, and a plurality of second adhesive members. The frame has a side portion and a plurality of protrusions protruding from the side portion toward the center of the frame. The first optical film has a slot. The first adhesive member has a long shape, and is provided on a part of the plurality of protrusions. The first adhesive member is exposed in the slot of the first optical film, and is attached to the protrusion and the second optical film. It is glued. The second adhesive member is individually provided on each of the plurality of protrusions, and the protrusion on which the first adhesive member is not provided is bonded to the protrusion and the first optical film.

  According to another technical solution of the present invention, the frame is provided with a groove, the light source is provided in the groove, and the protrusion protrudes at an interval in the groove.

  According to another technical solution of the present invention, the frame includes a back plate and a plastic frame provided around the back plate, the back plate is provided with a groove, and the plastic frame has a housing, Side portions are formed on the housing, and the protrusions extend integrally from the housing and project in the grooves.

  According to another technical solution of the present invention, the light source includes a circuit board and a plurality of light emitting diodes positioned on the circuit board.

  According to another technical solution of the present invention, each protrusion has a lower surface facing the circuit board and an upper surface facing the lower surface, and the circuit board is in contact with the lower surface of the protrusion.

  According to another technical solution of the present invention, the light emitting diode is located between two adjacent protrusions.

  According to another technical solution of the present invention, the first adhesive member has a first thickness, each second adhesive member has a second thickness, and the second thickness is the first thickness. Greater than thickness.

  According to another technical solution of the present invention, the thickness of the first optical film is substantially equal to a difference obtained by subtracting the first thickness from the second thickness.

  According to another technical solution of the present invention, the first optical film is a lower diffusion sheet, and the second optical film is a lower prism sheet.

  Another object of the present invention is to provide a display device to which the backlight module is applied.

  A display device of the present invention includes the backlight module as described above, at least one film located above the second optical film, a panel attaching member, and a display panel provided in the backlight module, The panel sticking member is stuck on the side part of the frame, the film, and the display panel.

  In the present invention, a slot is provided in the first optical film, and the first adhesive member is accommodated by using the slot, so that the first adhesive member is attached to the protrusion and the second optical film. This has the beneficial effect that the thickness of the backlight module and the display device as a whole can be reduced, and the product can be made thinner and narrower.

1 is a schematic exploded perspective view showing a preferred embodiment of a backlight module of the present invention. It is the schematic which shows the structure of the flame | frame in a preferable Example. FIG. 3 is a partially enlarged perspective view for supplementarily explaining FIG. 2. It is a partial expansion perspective view which shows the expansion aspect of the location A enclosed by the circle | round | yen of FIG. It is a fragmentary sectional view for explaining the relative position of a light source and a frame supplementarily. It is a partial expansion perspective view which shows the expansion aspect of the location B enclosed by the circle | round | yen of FIG. 1 is a schematic exploded perspective view showing a preferred embodiment of a display device of the present invention.

  The protection scope and technical contents of the present invention will become clear in the detailed description of the preferred embodiments with reference to the following drawings. It should be noted that like parts are indicated by the same numbers before giving a detailed description. For example, the directional terms mentioned in the following examples such as “top”, “bottom”, “front”, “back”, “left”, “right” are simply directions with reference to the drawings. Accordingly, the directional terminology used is used to describe rather than limit the invention.

  FIG. 1 shows a preferred embodiment of the backlight module of the present invention. Referring to FIG. 1, the backlight module includes a frame 2, a light source 3 provided in the frame 2, a light guide plate 4 provided in the frame 2 and facing the light source 3, and an upper side of the light guide plate 4. A first optical film 51 provided on the second optical film, a second optical film 52 provided above the first optical film 51, a first adhesive member 61, and a plurality of second adhesive members 62. ing.

  2 and 3, the frame 2 includes a back plate 21 and a plastic frame 22 provided so as to surround the back plate 21. The back plate 21 is provided with a groove 211. The plastic frame 22 includes a housing 221 and a plurality of protrusions 223 that extend integrally from the side portion 222 of the housing 221 and project toward the center of the frame 221.

              Referring to FIGS. 4 and 1, FIG. 4 is an enlarged view of a portion A surrounded by a circle in FIG. 1, the light source 3 is provided in the groove 211, and the protrusion 223 protrudes at an interval in the groove 211. . The first optical film 51 has a slot 511 that partially overlaps the groove 211. The first adhesive member 61 has a long shape and is provided on a part of the plurality of protrusions 223. After the assembly of the backlight module is completed, the first adhesive member 61 is exposed in the slot 511 of the first optical film 51 and bonded to the protrusion 223 and the second optical film 52. The second adhesive member 62 is independently provided on each of the plurality of protrusions 223. In the protrusion 223 where the first adhesive member 61 is not provided, the second adhesive member 62 is bonded to the protrusion 223 and the first optical film 51.

  In this embodiment, the protrusion 223 has a different thickness. For example, as shown in FIG. 5, the left protrusion 223 is thick, and the right protrusion 223 is thin. Therefore, the first optical film 51, the second adhesive member 62, and the right protrusion 223 are configured by making the thickness of each second adhesive member 62 on the right side larger than the thickness of the first adhesive member 61 on the left side. To ensure that the total height of the three members is equal to the total height of both the first adhesive member 61 and the left protrusion 223, so that the second optical film 52 can be The adhesive member 62 and the left first adhesive member 61 are flatly adhered. In other embodiments, the protrusions 223 may have the same thickness. By configuring the thickness of the first adhesive member 61 on the left side to be equal to the sum of the thicknesses of the second adhesive members 62 on the right side and the first optical film 51, the first optical film 51 and It is ensured that the total height of the three members of the second adhesive member 62 and the right protrusion 223 is equal to the sum of the heights of both the first adhesive member 61 and the left protrusion 223. The purpose of the optical film 52 is flatly adhered to the second adhesive members 62 on the right side and the first adhesive member 61 on the left side. In this embodiment, the first optical film 51 is a lower diffusion sheet, and the second optical film 52 is a lower prism sheet.

  Referring to FIGS. 1 and 6, FIG. 6 is an enlarged view of a portion B surrounded by a circle in FIG. 1, and the light source 3 includes a circuit board 31 and a plurality of light emitting diodes 32 positioned on the circuit board 31. And have. As shown in FIG. 5, the light emitting diode 32 is located between two adjacent protrusions 223. Each protrusion 223 has a lower surface 224 that faces the circuit board 31 and an upper surface 225 that faces the lower surface 224. The circuit board 31 is in contact with the lower surface 224 of the protrusion 223.

  As shown in FIG. 7, the present invention includes a backlight module as described above, a film 53 positioned above the second optical film 52, a panel pasting member 7, and a display panel provided in the backlight module. 8 is provided. The panel sticking member 7 is stuck to the side part 222 of the frame 2, the film 53, and the display panel 8.

  As can be seen from the above embodiments of the present invention, in the present invention, at least one optical film (first optical film 51 in the present embodiment) is provided with a slot 511, and the slot 511 is used to form one of the first adhesive members 61. House part. Thereby, the part located in the slot 511 in the first adhesive member 61 is simultaneously attached to other components in the backlight module and the display panel 8, and as a result, the thickness of the backlight module and the entire display device is reduced, Thinning and narrowing of the product can be achieved.

  In the present invention, a groove 211 can be provided in the back plate 21 in order to accommodate the light source 3 fitted from the back surface of the back plate 21. For this reason, it is not necessary to overlap the circuit board 31 of the light source 3 on the inner bottom surface of the back plate 21, and the target stacking thickness can be reduced.

  On the other hand, by using the integrally molded plastic frame 22 and the back plate 21, the back plate 21 and the plastic frame 22 are brought into close contact with each other so that the loosening phenomenon hardly occurs and the rigidity of the entire backlight module is enhanced. can do.

  Further, since the protrusion 223 of the plastic frame 22 is displaced from the light emitting diode 32 on the circuit board 31, when the light source 3 is assembled to the frame 2, the operator can easily align, thereby reducing the number of assembly steps. This shortens and improves the assembly efficiency.

  The above description is only a preferred embodiment of the present invention, and does not limit the scope of implementation of the present invention. In other words, simple equivalent changes and modifications made in accordance with the scope of claims and specification of the present invention are still included in the protection scope of the present invention.

2 Frame 21 Back plate 211 Groove 22 Plastic frame 221 Housing 222 Side part 223 Projection 224 Lower surface 225 Upper surface 3 Light source 31 Circuit board 32 Light emitting diode 4 Light guide plate 51 First optical film 511 Slot 52 Second optical film 53 Film 61 1st adhesive member 62 2nd adhesive member 7 Panel sticking member 8 Display panel A Location surrounded by a circle B Location surrounded by a circle

Claims (10)

A frame having a side part and a plurality of protrusions, wherein the plurality of protrusions protrude from the side part toward the center of the frame;
A light source provided in the frame;
A light guide plate provided in the frame and facing the light source side;
A first optical film provided above the light guide plate and having a slot;
A second optical film provided above the first optical film and partially overlapping the slot of the first optical film;
It is long and is provided on a part of the plurality of protrusions, is exposed in the slot of the first optical film, and is bonded to the protrusions and the second optical film. A first adhesive member,
A plurality of second adhesive members that are individually provided on the plurality of protrusions, and that are not provided with the first adhesive member, and are bonded to the protrusion and the first optical film. When,
Backlight module comprising. A groove is provided in the frame, and the light source is provided in the groove;
2. The backlight module according to claim 1, wherein the protrusion protrudes at an interval in the groove, and the slot of the first optical film partially overlaps the groove. The frame includes a back plate and a plastic frame provided around the back plate,
The groove is provided in the back plate;
The plastic frame has a housing, and the side portion is formed on the housing;
The backlight module according to claim 2, wherein the protrusion extends integrally from the housing and protrudes in the groove.   The backlight module according to claim 1, wherein the light source includes a circuit board and a plurality of light emitting diodes positioned on the circuit board. Each of the protrusions has a lower surface facing the circuit board and an upper surface facing the lower surface,
The backlight module according to claim 4, wherein the circuit board is in contact with a lower surface of the protrusion.   The backlight module according to claim 4, wherein the light emitting diode is positioned between two adjacent protrusions. The first adhesive member has a first thickness;
Each said second adhesive member has a second thickness,
The backlight module according to claim 1, wherein the second thickness is larger than the first thickness.   The backlight module according to claim 7, wherein a thickness of the first optical film is equal to a difference obtained by subtracting the first thickness from the second thickness.   The backlight module according to any one of claims 1 to 8, wherein the first optical film is a lower diffusion sheet, and the second optical film is a lower prism sheet. The backlight module according to any one of claims 1 to 9,
At least one film located above the second optical film;
A panel affixing member;
A display panel provided in the backlight module;
The panel attaching member is a display device attached to the side portion of the frame, the film, and the display panel.