CN216083335U - Narrow frame backlight module - Google Patents
Narrow frame backlight module Download PDFInfo
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- CN216083335U CN216083335U CN202121474876.1U CN202121474876U CN216083335U CN 216083335 U CN216083335 U CN 216083335U CN 202121474876 U CN202121474876 U CN 202121474876U CN 216083335 U CN216083335 U CN 216083335U
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Abstract
The utility model relates to a narrow-frame backlight module which comprises a back plate, a light source, a reflector plate, a light guide plate and an optical diaphragm, wherein the back plate comprises a bottom plate and a plurality of side plates arranged on the bottom plate in a surrounding mode, the bottom plate and the side plates form an accommodating space, the height of the side plate on a light emitting side is higher than that of the side plates on other side edges, the side plate on the light emitting side is bent in the horizontal direction along the direction of the optical diaphragm to form a bent side plate, the light source is fixed on the inner wall of the bent side plate, and the light emitting surface of the light source is in contact with the light guide plate. According to the narrow-frame backlight module provided by the utility model, the light source is arranged above the light guide plate, so that the width of the traditional side-entering light source in the back plate is reduced, the width of the lower frame is effectively reduced, and the narrow frame is realized.
Description
Technical Field
The utility model relates to the technical field of liquid crystal display, in particular to a narrow-frame backlight module.
Background
The liquid crystal display is in the mainstream position in the flat panel display and has wide application prospect. As one of the core components of a liquid crystal display, a backlight module has become an important research direction for light weight, thin profile, low power consumption, high energy efficiency and high brightness in order to maintain its competitiveness in the future market.
The backlight module can be divided into a direct type and a side type. The direct type backlight module is characterized in that a light source is arranged below a liquid crystal panel and forms a uniform surface light source through optical film components such as a diffusion film, and the direct type backlight module is high in brightness, good in uniformity and large in thickness. The side-in type backlight module is characterized in that a backlight source is arranged on the side face of a light guide plate, light rays emitted by a light source enter the light guide plate from the side face, namely a light incoming face, are emitted from a light outgoing face after being subjected to total reflection and scattering of bottom surface mesh points, and then pass through an optical film assembly to form a surface light source, and the side-in type backlight module is small in thickness and easy to lighten and thin. When the side-in type backlight module is adopted, the light source is usually arranged on the back frame of the side edge, and the thickness of the back frame is large, so that the width of the lower frame of the display panel is large easily, and the requirement of a narrow frame cannot be met.
With the progress of the manufacturing technology of liquid crystal displays, people need liquid crystal display products with larger display area, lighter weight and more beautiful appearance. Therefore, in order to improve the visual effect and meet the needs of people, the narrow frame of the liquid crystal display has become a development trend. The backlight module is one of the core components of the liquid crystal display, and it is important to narrow the frame.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the present invention is to provide a narrow-frame backlight module, which can solve the problem of a wider frame of the backlight module in the prior art.
The embodiment of the utility model provides a narrow-frame backlight module, which comprises a back plate, a reflecting plate, a light guide plate, an optical membrane and a light source, wherein the back plate comprises a bottom plate and a plurality of side plates arranged on the bottom plate in a surrounding manner, and an accommodating space is formed between the bottom plate and the side plates, and the narrow-frame backlight module is characterized in that the height of the side plate at the light inlet side is higher than that of the side plates at other sides, the side plate at the light inlet side is bent horizontally along the direction of the optical membrane to form a bent side plate, the part, which is vertical to the bottom plate and is not bent, of the side plate is a vertical side plate, the light source is fixed on the inner wall of the bent side plate, the light guide plate and the reflecting plate are arranged in the accommodating space, the reflecting plate is horizontally arranged on the bottom plate, the light guide plate is horizontally arranged on the reflecting plate, the light source is positioned above the light inlet side of the light guide plate, and the light emitting surface of the light source is contacted with the upper surface of the light guide plate, the optical film is arranged above the light guide plate and is positioned on one side, far away from the vertical side plate, of the light source.
Preferably, the vertical side plate and the bent side plate are arranged on at least one side of the side plate, and the light source is fixed on the inner wall of the bent side plate on at least one side.
Preferably, the light source is a plurality of LED lamps.
Preferably, an upper surface of the light guide plate extends to the vertical side plate.
Preferably, the area of the lower surface of the light guide plate is smaller than that of the upper surface of the light guide plate, and a bevel edge is formed between the upper surface and the lower surface of the light guide plate on the light incident side.
Preferably, the reflection sheet extends to be in contact with the vertical side plate and the vertical side plate.
Preferably, the narrow-bezel backlight module further comprises a small white reflector, and the small white reflector comprises an upper layer small white reflector and a side edge small white reflector.
Preferably, the upper layer of small white reflection is arranged on the inner wall of the bent side plate, and the side edge of small white reflection is arranged on the inner wall of the vertical side plate.
Preferably, a plurality of ears are arranged on one side of the light incident side of the optical film.
Preferably, the plurality of ears are disposed in the gaps between the plurality of LEDs, each ear being located between two adjacent LED lights.
The beneficial effects disclosed by the utility model are as follows: this narrow frame backlight unit who reveals bends towards the optics diaphragm direction through whole the orientation that keeps away from the bottom plate with the curb plate, forms the upper plate of bending, and the upper plate of bending is towards light guide plate one side fixed light source for the light emitting area and the light guide plate contact of light source, and the light that the light source sent passes through the light guide plate and forms the area source through the reflection of reflector plate, can effectively reduce backlight unit's frame in the top of light guide plate with the light source setting.
In order to make the aforementioned and other objects, features and advantages of the utility model comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic structural diagram of a narrow-frame backlight module according to an embodiment of the present invention;
fig. 2 is a schematic diagram of light path of a light source of a narrow-frame backlight module according to an embodiment of the present invention;
fig. 3 is a schematic view of a partial structure of a narrow-bezel backlight module according to an embodiment of the present invention.
Description of reference numerals:
10-a backlight module;
11-a light source; 12-small white and reversed; 13-an optical membrane; 14-a light guide plate; 15-a reflector plate; 16-a back plate; 17-ear; 161-a backplane; 162-side plate; 1621-vertical side plate; 1622-bending the side plate; 121-upper layer small white and reversed; 122-small white and inverted on the side;
Detailed Description
To further illustrate the technical means and effects of the present invention for achieving the intended purpose of the utility model, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientations and positional relationships based on the figures, and the terms "inner" and "outer" refer to the inner and outer of the outlines of the respective parts, only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The terms "a," "an," "the," "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first," "second," and the like are used merely as labels, and are not limiting on the number of their objects.
Fig. 1 is a schematic structural diagram of a narrow-bezel backlight module according to an embodiment of the present invention, as shown in fig. 1, a narrow-bezel backlight module 10 according to an embodiment of the present invention includes a back plate 16, a light source 11, a reflector 15, a light guide plate 14, and an optical film 13, where the back plate 16 includes a bottom plate 161 and a plurality of side plates enclosed on the bottom plate 161, a height of the side plate 162 on a light incident side is higher than that of the side plates on other sides, one side of the side plate 162 away from the bottom plate is horizontally bent along a direction of the optical film 13 to form a bent side plate 1622, a portion of the side plate 162 perpendicular to the bottom plate 161 is a vertical side plate 1621, the bent side plate 1622 and the vertical side plate 1621 may be integrally connected, and in other embodiments, the connection manner is not limited.
The side of the bent side plate 1622 facing the bottom plate 1621 is provided with a light source 11, the light emitting surface of the light source 11 faces the light guide plate 14, and the backlight surface of the light source 11 is fixed to the bent side plate 1622 by gluing or the like. The light source 11 may be a plurality of LED lamps, the LED lamps are arranged along the length direction of the bent side plate 1622, and light emitted by the LED lamps enters from the light incident side of the light guide plate 14, and is converted into a surface light source to be emitted after passing through the light guide plate 14. The vertical side plate 1621 has a vertical height such that the light emitting side of the light source 11 is in contact with the light guide plate 14. The light source 11 is arranged to enter light above the light guide plate 14, so that the width of the traditional side-entering light source arranged on the side edge of the light guide plate can be reduced, and the lower frame is reduced. In the present embodiment, only the side plate on the light incident side is taken as an example, in some large-sized display panels, when the light source on a single side does not reach the brightness required to be provided by the back plate, the vertical side plate and the bent side plate may be also arranged on at least one side of the side plate of the backlight module 10, and the light source is fixed on the inner wall of the bent side plate on at least one side, so that the number of light bars of the light source is increased without increasing the width of the bottom plate, and the brightness of the backlight source is effectively increased.
Further, an optical film 13 is disposed in the accommodating space, the optical film 13 is located on a side of the light guide plate 14 away from the bottom plate 161, and the optical film 13 may include multiple layers of films, and specifically, may include a diffusion sheet, a prism sheet, or a brightness enhancement film, and the like, and mainly functions to sufficiently diffuse or converge light emitted from the light guide plate or increase the utilization rate.
Further, still be provided with little white anti 12 in the accommodation space, little white anti 12 includes the little white anti 121 of upper strata on the perpendicular curb plate 1621 inner wall and bends the little white anti 122 of side on the inner wall of curb plate 1622, adds little white anti 12 in the inside of curb plate 162 and can prevent the light leak, strengthens the utilization ratio of light, and wherein little white anti 12 can adopt FPC white lacquer, increases the reflectivity of light.
Fig. 2 is a schematic diagram of a light path of a light source of a narrow-frame backlight module according to an embodiment of the present invention, as shown in fig. 2, a light emitting surface of a light source 11 contacts a light guide plate 14, the light source 11 emits light, and most of the light emitted by the light source 11 can directly enter the light guide plate 14, wherein a light incident side of the light guide plate 14 is an inclined surface, so that a part of the light that does not pass through the light guide plate 14 can be refracted by the inclined surface, and then reflected by a reflector 15 below the light guide plate 14, so that the light returns to the light guide plate 14 again.
The bevel edge is formed between the upper surface and the lower surface of the light incidence side of the light guide plate 14, the bevel edge bevel does not exceed the total reflection angle, so that light can be reflected to the reflector plate 15 through the side small white reflector 122, and then reflected by the reflector plate 15 to return to the light guide plate 14 again, the optical path of the light in the light guide plate 14 is increased, the light is fully diffused in the light guide plate 14, the utilization rate of the light is increased, and the light loss is reduced. Light rays emitted by the light source 11 in other directions can reach the light guide plate 14 through reflection of the upper layer small white reflector 121 or the side edge small white reflector 122, and the utilization rate of the whole light rays is improved.
Fig. 3 is a partial structural view of a narrow-frame backlight module according to an embodiment of the present invention, as shown in fig. 3, a plurality of ears 17 are disposed on one side of the optical film 13 close to the light source 11, in this embodiment, 3 ears are taken as an example, the ears 17 are convexly disposed among the plurality of LED lamps, and the ears 17 disposed on the optical film 13 can cooperate with gaps between the LED lamps to fix the light incident side of the optical film 13, so as to prevent the optical film 13 from generating abnormal sound, and thus, the optical film 13 is fixed.
The narrow-frame backlight module comprises a bottom plate and a plurality of side plates arranged on the bottom plate in a surrounding mode, wherein the height of the side plate 162 on the light incident side is higher than that of the side plates on other sides, the upper portion of the side plate 162 is horizontally bent along the direction of an optical membrane to form a bent side plate, a light source is fixed on the inner wall of the bent side plate, the light source enters the light guide plate, the width of the light source on the side of the light guide plate in the prior art can be reduced, the lower frame is reduced, and the narrow frame is achieved. The bottom plate has set gradually the reflector plate with the accommodation space of curb plate formation in, light guide plate and optics diaphragm, optics diaphragm is provided with the ear in light source one side and can fixes the optics diaphragm, prevents the abnormal sound, is provided with little white reflection on the curb plate 162 inner wall, and the income light side of light guide plate sets up the inclined plane form for light reflects light guide plate inclined plane part through the reflector plate, through the refraction on inclined plane reentrant light guide plate, reduces the light loss. According to the utility model, the traditional side-in light source is arranged above the light guide plate, so that the lower frame is effectively reduced, the narrow frame is realized, the light-in side of the light guide plate is arranged in an inclined plane shape, and the utilization rate of the light source is increased.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (10)
1. A narrow-frame backlight module comprises a backboard, a reflector plate, a light guide plate, an optical diaphragm and a light source, wherein the backboard comprises a bottom plate and a plurality of side plates arranged on the bottom plate in a surrounding manner, and an accommodating space is formed between the bottom plate and the side plates, and is characterized in that the height of the side plate at the light inlet side is higher than that of the side plates at other sides, the side plate at the light inlet side is bent along the direction of the optical diaphragm in the horizontal direction to form a bent side plate, the part, perpendicular to the bottom plate, of the side plate which is not bent is a vertical side plate, the light source is fixed on the inner wall of the bent side plate, the light guide plate and the reflector plate are arranged in the accommodating space, the reflector plate is horizontally arranged on the bottom plate, the light guide plate is horizontally arranged on the reflector plate, the light source is positioned above the light inlet side of the light guide plate, and the light emitting surface of the light source is contacted with the upper surface of the light guide plate, the optical film is arranged above the light guide plate and is positioned on one side, far away from the vertical side plate, of the light source.
2. The narrow-bezel backlight module as claimed in claim 1, wherein the vertical side plate and the bent side plate are disposed on at least one side of the side plate, and the light source is fixed on an inner wall of the bent side plate on at least one side.
3. The narrow-bezel backlight module of claim 2, wherein the light source is a plurality of LED lamps.
4. The narrow-bezel backlight module as recited in claim 3, wherein the upper surface of the light guide plate extends to the vertical side plate.
5. The narrow-bezel backlight module as claimed in claim 4, wherein the area of the lower surface of the light guide plate is smaller than the area of the upper surface of the light guide plate, and a bevel edge is formed between the upper and lower surfaces of the light guide plate at the light incident side.
6. The narrow bezel backlight module of claim 1, wherein the reflector sheet extends to contact the vertical side plate.
7. The narrow-bezel backlight module of claim 1, further comprising a small white bar, wherein the small white bar comprises an upper layer small white bar and a side edge small white bar.
8. The narrow-bezel backlight module as claimed in claim 7, wherein the upper layer small white strip is disposed on the inner wall of the bent side plate, and the side small white strip is disposed on the inner wall of the vertical side plate.
9. The narrow-bezel backlight module as claimed in claim 3, wherein a plurality of ears are disposed on a light incident side of the optical film.
10. The narrow-bezel backlight module as recited in claim 9, wherein the plurality of ears are disposed in gaps between the plurality of LEDs, each ear being located between two adjacent LED lights.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121474876.1U CN216083335U (en) | 2021-06-30 | 2021-06-30 | Narrow frame backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121474876.1U CN216083335U (en) | 2021-06-30 | 2021-06-30 | Narrow frame backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216083335U true CN216083335U (en) | 2022-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121474876.1U Active CN216083335U (en) | 2021-06-30 | 2021-06-30 | Narrow frame backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216083335U (en) |
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2021
- 2021-06-30 CN CN202121474876.1U patent/CN216083335U/en active Active
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