TWM562990U - Backlight module and display device - Google Patents

Abstract

A backlight module and a display device. The backlight module is mainly provided with a light guide plate and an optical film group on one side thereof in a frame, and the optical film group is fixed in the frame by a multi-layer tape, and the light guide plate is disposed on the frame. The display device comprises a backlight module and a display panel on one side thereof, wherein the positioning edge of the frame of the frame is provided with a positioning notch, and the optical film group comprises the first film and the second film stacked The diaphragm, the opposite convex portion of the first diaphragm corresponds to the positioning notch, the second diaphragm has a positioning edge, and the multi-layer adhesive tape is adhered to the opposite convex portion of the first diaphragm by the first film, and is attached to a film The upper outer strip is adhered to the positioning edge of the second diaphragm and the positioning edge strip of the frame, and covers the positioning gap of the positioning edge strip. Thereby, the backlight group can effectively reduce the overall thickness and the frame size of the backlight module, so that it can be widely applied to the product design of thinning and narrow bezel of various backlight modules and display devices.

Description

Backlight module and display device

The present invention relates to a backlight module that provides a backlight and a display device having the same.

In the current display device, a backlight module is used to provide a backlight to the display panel. The conventional backlight module is mainly provided with a light guide plate in a frame and outside the light incident surface of the light guide plate. A light source is disposed, and an optical film group including a plurality of optical films is disposed outside the light-emitting surface of the light guide plate, so that the light emitted by the light source passes through the light guide plate by utilizing the performance of the light-reflecting plate for total light reflection and the microstructure of the light-emitting surface. After being uniformly dispersed, the light emitted from the light-emitting surface of the light guide plate is further diffused and dispersed by the optical film group to provide a uniform brightness backlight to the display panel.

In the composition structure of the existing backlight module, in order to enable the optical film group to be fixed above the light-emitting surface of the light guide plate in the frame, the optical film group is disposed on the two sides of the frame different from the position where the light source is disposed. The two sides are respectively fixed to the support by double-sided tape.

However, the existing backlight module and the display device including the backlight module are required to fix the optical film set by the double-sided adhesive tape of the supporting member structure on both sides of the frame different from the position of the light source, thereby forming the frame of the whole backlight module. The edge size and the thickness dimension are too large, which is disadvantageous for the design of the backlight module and the display device toward the thinned and narrow frame. Furthermore, the existing backlight module has a combination of structural design of the optical film set by double-sided tape fixing on both sides of the frame different from the position of the light source, which has a large number of components, high material cost, and is easy to assemble. Due to the cumbersome assembly steps, there are many assembly man-hours, and it is easy to extend the cost of rework due to poor assembly and assembly between components.

The purpose of the present invention is to provide a backlight module and a display device, which solves the problems that the backlight module of the conventional display device is difficult to be narrowed and thinned, and the assembly time is high, the cost is high, and the defective product is easily degraded.

In order to achieve the foregoing, the backlight module of the present invention comprises: a frame comprising a backboard and a frame disposed at a periphery of the backboard, the frame comprising an assembly side, the assembly side comprising The positioning strips are arranged at least one positioning notch; the light guiding plate is disposed in the frame and located at one side of the backing plate; and a light emitting component, the light emitting direction of the light emitting component is oriented An optical film set is disposed in the frame and located on a side of the light guide plate facing away from the back plate, the optical film set includes a first film and a second film. The first diaphragm is adjacent to the light guide plate, and the first diaphragm faces at one side of the positioning edge strip to form at least one pair of positioning protrusions corresponding to the positioning gap, the second diaphragm is disposed on the first diaphragm back a side of the light guide plate having a positioning edge on a side of the second film facing the positioning strip; and a multi-layer tape comprising an outer strip and at least a first positioning film, the first a positioning film is attached to the outer strip, and corresponds to Affixed to the projecting portion of the first alignment diaphragm, the outer positioning notches of the positioning adhesive strip second diaphragm strip edge and positioning the frame and covers the positioning of the strip.

In the backlight module as described above, the multi-layer tape further comprises at least one second positioning film disposed between the first positioning film and the outer rubber strip; the optical film group further comprising a third film a third film disposed between the first film and the second film, the third film comprising a plurality of extensions, each of the extensions overlapping the corresponding alignment convex And the extension portion is located on a side of the first positioning film and is adhered by the second positioning film.

In the backlight module as described above, the extension portion has a bump, and the protrusion is superposed on the corresponding alignment convex portion and located on one side of the first positioning film, and the second positioning The film is adhered to the bump.

In the backlight module as described above, the extending portion has two spaced-apart bumps, and the two of the protruding portions of the extending portion are stacked on the corresponding alignment convex portion and located at the first Positioning the two sides of the film, the second positioning film protrudes beyond the long-axis side edge of the first positioning film, and can simultaneously adhere to the two protrusions of the extending portion, the alignment convex portion A portion is exposed between the two bumps and is adhered by the first positioning film.

In the backlight module as described above, a reflective sheet is disposed between the back plate of the frame and the light guide plate.

In the backlight module as described above, the light emitting component is disposed in the mounting side of the frame of the frame.

In order to achieve the foregoing, the display device of the present invention further comprises: a backlight module as described above; and a display panel disposed outside the optical film group of the backlight module.

In the display device as described above, the backlight module further includes a panel adhesive member disposed on the frame of the frame with respect to the remaining side of the mounting side, the display panel being fixed to the panel adhesive member On the border of the frame.

With the backlight module and display device of the present invention, it has the following advantages: 1. Reduced thickness and frame size: The present invention mainly utilizes multi-layered stacked multi-layer tape, and the frame is positioned on the frame of the frame. Forming the positioning notch, and the first diaphragm of the optical film group protrudes into the positioning gap with the aligning convex portion thereof, and properly utilizes the space of the overall structure, and the multi-layer tape can simultaneously separate the optical film groups The first film and the second film located in the inner and outer layers are adhered and fixed together in the frame, so that the overall thickness and the frame size of the backlight module can be effectively reduced, so that it can be widely applied to various backlight modules and display devices. Thin design and narrow frame structure design. 2, reduce material costs: As mentioned above, the new system uses multi-layer tape with frame and optical film set, which can effectively reduce the amount of materials used and reduce material costs. 3. Shorten the assembly man-hour and improve the assembly yield: This new type mainly uses the multi-layer tape containing the outer rubber strip and the first positioning film, and the frame is formed on the positioning edge strip of the frame to form the positioning gap, and the optical film group is The first diaphragm has an alignment convex portion, so that the optical film assembly is assembled on the frame and positioned, and the optical film group is directly adhered and fixed in the frame by the multi-layer adhesive tape, so that the assembly man-hour can be effectively shortened, and at the same time, The multi-layer tape can directly and accurately fix the optical film set in the frame, thereby improving the assembly yield and reducing the material rework cost due to poor assembly. 4. Improve the cleanliness of the product: As mentioned above, this new type adopts a simplified and simplified combination structure, which can reduce the material of the parts, so it can reduce the residual of foreign materials due to the raw materials of the parts and improve the cleanliness of the products.

According to the technical solution disclosed in the new disclosure, the present invention comprises a backlight module and a display device. As shown in FIG. 1 and FIG. 2, a backlight module 1 includes: a frame. 10. A light guide plate 20, a light-emitting assembly 40, an optical film set 50, and a multi-layer tape 60.

As shown in FIG. 1 and FIG. 2 , the frame 10 includes a back plate 11 and a frame 12 disposed on the periphery of the back plate 11 . The frame 12 includes a mounting side 13 , and the mounting side 13 includes a back plate 11 . The positioning strips 14 are arranged at intervals, and the positioning strips 14 form at least one positioning notch 15. In the preferred embodiment, the positioning strip 14 forms a plurality of spaced apart positioning notches 15.

As shown in FIG. 1 and FIG. 2 , the light guide plate 20 is disposed in the frame 10 and located on one side of the back plate 11 . The light guide plate 20 includes a light exit surface 22 and a light incident surface 21 on a side of the light exit surface 22 . The light incident surface 21 faces the mounting side 13 of the frame 12 of the frame 10 . A reflection sheet 30 may be disposed between the light guide plate 20 and the back plate 11 of the frame 10.

As shown in FIG. 1 and FIG. 2, the light-emitting assembly 40 is disposed outside the light guide plate 20, and the light-emitting direction of the light-emitting assembly 40 is directed toward the light guide plate 20. In the preferred embodiment, the light-emitting assembly 40 is disposed on the light-emitting assembly 40. In the mounting side 13 of the frame 12 of the frame 10, the light-emitting direction of the light-emitting assembly 40 faces the light-incident surface 21 of the light guide plate 20.

As shown in FIG. 1 to FIG. 4, the optical film set 50 is disposed in the frame 10 and located on a side of the light guide plate 20 facing away from the back plate 11. The optical film set 50 includes a first film. a sheet 51 and a second diaphragm 52, the first diaphragm 51 is adjacent to the light guide plate 20, and the first diaphragm 51 faces at one side of the positioning strip 14 to form at least one pair of protrusions 511, and the positioning In the preferred embodiment, the first diaphragm 51 has a plurality of alignment protrusions 511. The second diaphragm 52 is disposed on a side of the first diaphragm 51 facing away from the light guide plate 20. A side of the second diaphragm 52 facing the positioning strip 14 has a positioning edge 521.

As shown in FIGS. 2-6, the multi-layer tape 60 is used to fix the optical film set 50 in the frame 10. The multi-layer tape 60 includes an outer strip 61 and at least one first positioning film 62. The first positioning film 62 is attached to the outer rubber strip 61, and is correspondingly adhered to the opposite convex portion 511 of the first diaphragm 51, and the outer rubber strip 61 is adhered to the second diaphragm 52. The positioning edge 521 and the positioning edge strip 14 of the frame 10 cover the positioning notch 15 of the positioning edge strip 14.

As shown in FIG. 2 to FIG. 6 , in the preferred embodiment, the optical film set 50 further includes a third diaphragm 53 , and the third diaphragm 53 is disposed on the first diaphragm 51 and the second Between the diaphragms 52, the third diaphragm 53 includes a plurality of extending portions 531, each of the extending portions 531 is superposed on the corresponding alignment convex portion 511, and the extending portion 531 is located at the A side of the positioning film 62. The multi-layer adhesive tape 60 further includes at least one second positioning film 63. The second positioning film 63 is disposed between the first positioning film 62 and the outer rubber strip 61, and the second positioning film 63 is pasted. The extension portion 531.

As shown in FIG. 2 to FIG. 6 , the extension portion 531 of the third diaphragm 53 may be two spaced-apart protrusions 532 , and the two protrusions 532 of the extension portion 531 are stacked to correspond to the corresponding ones. On the alignment convex portion 511 and on both sides of the first positioning film 62, the second positioning film 63 of the multi-layer adhesive tape 60 protrudes beyond the long-axis side edge of the first positioning film 62, and The two protrusions 532 of the extension portion 531 can be simultaneously adhered, and a portion of the alignment protrusions 511 is exposed between the two protrusions 532 and adhered by the first positioning film 62. In addition, the extension portion of the third diaphragm may be a protrusion (not shown), and the protrusion is stacked on the corresponding alignment protrusion and located on the side of the first positioning film. The second positioning film of the multi-layer tape is adhered to the bump.

The backlight module 1 of the present invention utilizes a multi-layer tape stack 60 of a plurality of layers of film stacks, and the frame 10 is formed with a positioning notch 15 at the positioning edge strip 14 of the frame 12, and the first film 51 of the optical film group 50. Since the alignment convex portion 511 is aligned and protruded into the positioning notch 15 and above the light-emitting assembly 40, the space of the frame 12 of the frame 10 can be properly utilized, and the optical film group can be simultaneously used by the multi-layer tape 60. The first diaphragm 51 and the second diaphragm 52, which are located in the inner and outer layers, are adhered and fixed to the frame 12 together, so that the assembly has good simplicity.

As shown in FIG. 7 and FIG. 2, the display device of the present invention comprises a backlight module 1 and a display panel 2. The backlight module 1 has the same structure as the backlight module 1 described above, and is not repeated here. Narration. The display panel 2 is disposed outside the optical film set 50 of the backlight module 1 . In the preferred embodiment, the backlight module 1 further includes a panel adhesive member disposed on the frame 12 of the frame 10 with respect to the remaining side of the mounting side 13. The display panel 2 is combined. The panel adhesive is fixed to the frame 12 of the frame 10. The display panel 2 can be a liquid crystal display panel, and the backlight module 1 provides the necessary backlight to the display panel 2.

In summary, the backlight module of the present invention mainly utilizes a multi-layered stacked layer of adhesive tape, and the frame is formed with a positioning notch on the frame of the frame, and the first film of the optical film group is aligned with the same. The convex portion protrudes into the positioning gap, and the space of the whole structure is properly utilized, and the first film and the second film which are respectively located in the inner and outer layers of the optical film group can be simultaneously adhered and fixed by using the multi-layer adhesive tape. In the frame, the overall thickness and the frame size of the backlight module can be effectively reduced, so that it can be widely applied to the thinning and narrow frame structure design of various backlight modules and display devices. On the other hand, the present invention can reduce the material of the component by simplifying the combined structure, thereby reducing the residual foreign matter of the component material, improving the cleanliness of the product, reducing the amount of material used, and reducing the material cost. In addition, the backlight module of the present invention can directly fix the optical film group to the frame by using a multi-layer adhesive tape after the optical film group is disposed in the frame and positioned, thereby effectively shortening the assembly man-hour and improving the assembly yield. The material rework cost caused by poor assembly is reduced, and the creation of the novel has excellent industrial utilization value.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Although the present invention has been disclosed above in the preferred embodiments, it is not intended to limit the present invention. The skilled person can make some modifications or modifications to the equivalent embodiments by using the above-disclosed technical contents without departing from the spirit and scope of the present invention. The technical content of the present invention is not limited to any simple modifications, equivalent changes and modifications of the preferred embodiments described above.

1‧‧‧Backlight module
2‧‧‧ display panel
10‧‧‧Frame
11‧‧‧ Backboard
12‧‧‧Border
13‧‧‧Assemble side
14‧‧‧Locating edge strips
15‧‧‧ Positioning gap
20‧‧‧Light guide
21‧‧‧Into the glossy surface
22‧‧‧Glossy
30‧‧‧reflector
40‧‧‧Lighting components
50‧‧‧Optical diaphragm group
51‧‧‧First diaphragm
511‧‧‧ alignment convex
52‧‧‧second diaphragm
521‧‧‧ positioning edge
53‧‧‧ third diaphragm
531‧‧‧Extension
532‧‧‧Bumps
60‧‧‧Multilayer tape
61‧‧‧External strip
62‧‧‧First positioning film
63‧‧‧Second positioning film

FIG. 1 is a perspective exploded view of a preferred embodiment of the backlight module of the present invention. 2 is a partial side cross-sectional view of the preferred embodiment of the backlight module of FIG. 1. 3 is a partially enlarged exploded view of the frame, the optical film set and the multi-layer tape in the preferred embodiment of the backlight module shown in FIG. 1. 4 is a schematic flow chart of an optical film set in a preferred embodiment of the backlight module shown in FIG. 1. FIG. 5 is a schematic view showing the combination of the first positioning film and the second positioning film in the state in which the multi-layer tape is not provided with the outer tape after the optical film group shown in FIG. 4 is combined. FIG. 6 is a schematic view showing the frame, the optical film set and the multi-layer adhesive tape shown in FIG. Figure 7 is a partial side elevational cross-sectional view of a preferred embodiment of the novel display device.

Claims (8)

A backlight module includes: a frame including a backboard and a frame disposed at a periphery of the backboard, the frame comprising a mounting side, the mounting side including a positioning edge strip spaced from the backing plate, The positioning strip forms at least one positioning notch; a light guide plate is disposed in the frame and located at one side of the back plate; a light emitting component, the light emitting direction of the light emitting component faces the light guide plate; The optical film set includes a first diaphragm and a second diaphragm, and the first diaphragm is adjacent to the light guide plate, and is disposed in the frame and located on a side of the light guide plate facing away from the back plate. Forming at least one pair of protrusions on a side of the first film facing the positioning strip, the second film is disposed on a side of the first film facing away from the light guide plate, a side of the second diaphragm facing the positioning strip has a positioning edge; and a multi-layer tape comprising an outer strip and at least one first positioning film, the first positioning film being attached to the outer layer On the strip, and correspondingly adhered to the first diaphragm On the adhesive strip of the outer edge of the second diaphragm positioned with the positioning of the frame strip and covers the positioning notches of the positioning of the strip. The backlight module of claim 1, wherein the multi-layer tape further comprises at least one second positioning film disposed between the first positioning film and the outer rubber strip; the optical film group further comprises a third diaphragm disposed between the first diaphragm and the second diaphragm, the third diaphragm comprising a plurality of extensions, each of the extensions overlapping a corresponding one The alignment convex portion is disposed on the side of the first positioning film and is adhered by the second positioning film. The backlight module of claim 2, wherein the extending portion has a bump, and the bump is stacked on the corresponding alignment convex portion and located on a side of the first positioning film. The second positioning film is adhered to the bump. The backlight module of claim 2, wherein the extension portion has two spaced-apart bumps, and the two of the protrusions of the extension portion are stacked on the corresponding alignment convex portion and located Two sides of the first positioning film, the second positioning film protrudes beyond the long-axis side edge of the first positioning film, and can simultaneously adhere to the two protrusions of the extending portion, the pair A portion of the raised portion is exposed between the two of the bumps and adhered by the first positioning film. The backlight module of any one of claims 1 to 4, wherein a reflective sheet is disposed between the back plate of the frame and the light guide plate. The backlight module of any one of claims 1 to 4, wherein the light emitting component is disposed within an assembly side of a frame of the frame. A display device, comprising: a backlight module according to any one of claims 1 to 6, and a display panel disposed outside the optical film group of the backlight module. The display device of claim 7, wherein the backlight module further comprises a panel adhesive member disposed on a frame of the frame with respect to a remaining side of the mounting side, the display panel being combined with the panel The adhesive is fixed to the frame of the frame.