CN215813424U - Ultrathin backlight module and mobile phone - Google Patents
Ultrathin backlight module and mobile phone Download PDFInfo
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- CN215813424U CN215813424U CN202121759194.5U CN202121759194U CN215813424U CN 215813424 U CN215813424 U CN 215813424U CN 202121759194 U CN202121759194 U CN 202121759194U CN 215813424 U CN215813424 U CN 215813424U
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- guide plate
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Abstract
The utility model discloses an ultrathin backlight module and a mobile phone, wherein the ultrathin backlight module comprises: a frame comprising a base plate; the reflecting film is arranged on the upper surface of the bottom plate; the light guide plate is arranged on the upper surface of the reflecting film and is provided with a light incoming surface arranged at the side end, and the light incoming surface extends out of the side end of the reflecting film; the light source comprises a circuit board and an LED arranged on the circuit board, the LED is positioned between the circuit board and the bottom plate, the LED is provided with a light-emitting surface, and the light-emitting surface and the light-incoming surface are arranged in an aligned mode; wherein, the bottom plate is close to the one end of light source and is equipped with the heavy groove of undercut, is equipped with the shading structure of not protruding heavy groove in the heavy groove, and shading structure one end is connected with the reflectance coating, and the other end extends to the below of LED. The ultrathin backlight module provided by the utility model has the advantages that the reflecting film is retracted, so that the alignment of the LED light-emitting surface and the light-in surface of the light guide plate is facilitated, the light guide plate can be made into a wedge-shaped section or a small section of poor wedge, and the lamp socket effect is good.
Description
Technical Field
The utility model relates to the technical field of backlight modules, in particular to an ultrathin backlight module and a mobile phone.
Background
With the development of market demand, the thickness of the backlight module and the mobile phone is required to be thinner and thinner. In order to solve the problem, a compression molding technology, an LGF technology, a composite film technology, a thin-support LED and the like are sequentially provided. In the backlight module in the prior art, the matching of the LEDs and the light guide plate is not finally solved for some reasons, and there are two general schemes, one is a scheme of matching an ultrathin light guide plate with a thin bracket LED (0.33TLED), which has the disadvantage that the luminance and the structural strength of the LEDs are limited; another solution is generally used, and another solution (as shown in fig. 1) is that an ultra-thin light guide plate is matched with a thicker bracket LED (0.4TLED) solution, but the wedge-shaped section (a) of the light guide plate has large section difference, and the socket effect is difficult to handle.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides an ultrathin backlight module with good lamp socket effect.
The utility model also provides a mobile phone with the ultrathin backlight module.
According to a first aspect of the utility model, an ultra-thin backlight module comprises: a frame comprising a base plate; the reflecting film is arranged on the upper surface of the bottom plate; the light guide plate is arranged on the upper surface of the reflecting film and is provided with a light inlet surface arranged at the side end, and the light inlet surface extends out of the side end of the reflecting film; the light source comprises a circuit board and an LED arranged on the circuit board, the LED is positioned between the circuit board and the bottom plate, the LED is provided with a light-emitting surface, and the light-emitting surface and the light-in surface are arranged in an aligned mode; one end of the bottom plate, which is close to the light source, is provided with a downward sunken sinking groove, a shading structure which does not protrude out of the sinking groove is arranged in the sinking groove, one end of the shading structure is connected with the reflecting film, and the other end of the shading structure extends to the lower part of the LED.
The ultrathin backlight module according to the embodiment of the utility model at least has the following technical effects: the light incident surface of the light guide plate extends out of the end part of the reflection film, so that the reflection film is retracted, the reflection film can avoid the LED, the light emergent surface of the LED is conveniently aligned with the light incident surface of the light guide plate, the light guide plate can be made into a wedge-free section or a small section with poor wedge shape, and the lamp socket has good effect; and the light leakage problem caused by the shrinkage of the reflecting film can be solved by arranging the sinking groove on the bottom plate of the frame and arranging the light shielding structure in the sinking groove for shielding light.
According to some embodiments of the utility model, the light shielding structure is a first double sided adhesive.
According to some embodiments of the utility model, the light shielding structure is a single-sided adhesive, a surface of the single-sided adhesive is bonded to the bottom wall of the sinking groove, and the single-sided adhesive is connected to the reflective film through a second double-sided adhesive.
According to some embodiments of the present invention, the frame is connected to a rubber frame, the circuit board is mounted on an upper end of the rubber frame, and the circuit board extends to above the light guide plate and is connected to the light guide plate.
According to some embodiments of the utility model, the frame further comprises a side plate vertically arranged at the edge of the bottom plate and extending upwards, and the rubber frame is provided with a step which abuts against the inner side of the side plate.
According to some embodiments of the utility model, a positioning column is arranged at the connection part of the rubber frame and the circuit board, a positioning hole is arranged on the circuit board, and the positioning column is inserted into the positioning hole.
According to some embodiments of the present invention, a light shielding adhesive is disposed above the light guide plate, and a diffusion film, a lower brightness enhancement film, and an upper brightness enhancement film are disposed between the light guide plate and the light shielding adhesive.
A mobile phone according to an embodiment of the second aspect of the present invention includes: the ultra-thin backlight module of any embodiment of the first aspect of the utility model.
The mobile phone according to the embodiment of the utility model at least has the following technical effects: the present invention includes the ultra-thin backlight module described in any of the above embodiments, and therefore, all the advantages of the ultra-thin backlight module described in any of the above embodiments are provided, which is not illustrated herein.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of a backlight module in the prior art;
FIG. 2 is a schematic cross-sectional view of an installation structure of an ultra-thin backlight module according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of an installation structure of an ultra-thin backlight module according to another embodiment of the utility model.
Reference numerals:
the frame 100, the bottom plate 110, the sinking groove 111, the first double-sided adhesive 120, the single-sided adhesive 130, the second double-sided adhesive 140, the adhesive frame 150, the step 151, the positioning column 152 and the side plate 160;
a reflective film 200;
a light guide plate 300, a light incident surface 301, a light blocking glue 310, a diffusion film 320, a lower brightness enhancement film 330 and an upper brightness enhancement film 340;
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 2, an ultra-thin backlight module provided in an embodiment of the present invention includes: frame 100, reflective film 200, light guide plate 300, light source 400.
The frame 100 includes a base plate 110; the reflective film 200 is disposed on the upper surface of the base plate 110; the light guide plate 300 is disposed on the upper surface of the reflective film 200, the light guide plate 300 has a light incident surface 301 disposed at a side end, the light incident surface 301 extends out of the side end of the reflective film 200, specifically, as shown in fig. 2, the light incident surface 301 of the light guide plate 300 is disposed at the left side and extends out of the left end of the reflective film 200, that is, the reflective film 200 retracts; the light source 400 includes a circuit board 410 and an LED420 disposed on the circuit board 410, specifically, the circuit board 410 is connected to the bottom plate 110, and the LED420 is soldered on the circuit board 410, and it is conceivable that the LED may be glued; further, the LED420 is located between the circuit board 410 and the bottom plate 110, that is, the main body structure is installed in the forward direction (in the reverse installation, the circuit board 410 is located between the bottom plate 110 and the LED 420), and compared with the reverse installation of the main body structure, the forward installation can improve backlight brightness by 8% -10%; further, the LED420 has a light emitting surface 421 disposed on the right side as shown in fig. 2, and the light emitting surface 421 is aligned with the light incident surface 301 to ensure light efficiency; wherein, one end of the bottom plate 110 close to the light source 400 is provided with a downward concave sinking groove 111, a shading structure which does not protrude out of the sinking groove 111 is arranged in the sinking groove 111, namely, the shading structure is completely positioned in the sinking groove 111, one end of the shading structure is connected with the reflective film 200, and the other end extends to the lower part of the LED420, and the shading structure is arranged to prevent the problems of light leakage and brightness loss caused by the inward shrinkage of the reflective film 200; it can be understood that the shading structure can be black, and also can be white or silver, and black can play the extinction effect, and white or silver can play the reflection of light effect, and both can promote the light efficiency.
According to the ultrathin backlight module provided by the embodiment of the utility model, the light incident surface 301 of the light guide plate 300 extends out of the end part of the reflection film 200, so that the reflection film 200 is retracted, the reflection film 200 can avoid the LED420, the light emitting surface 421 of the LED420 and the light incident surface 301 of the light guide plate 300 are conveniently aligned, interference is avoided, and the light guide plate 300 can be made into a structure without a wedge section or a small section of a differential wedge shape due to the enlarged installation space of the LED420, so that the lamp socket effect is better and easier to process compared with a structure with a large difference of the wedge sections in the prior art; the light leakage and the brightness loss caused by the inward shrinkage of the reflective film 200 can be solved by arranging the sinking groove 111 on the bottom plate 110 of the frame 100 and arranging the light shielding structure which does not protrude out of the sinking groove 111 in the sinking groove 111 for blocking light.
Referring to fig. 2, in some embodiments of the present invention, the light shielding structure is the first double-sided adhesive 120, specifically, the bottom end of the first double-sided adhesive 120 is bonded to the bottom wall of the sinking groove 111, and the top end is bonded to the reflective film 200, so that the reflective film 200 can be fixed while shielding light, and the light shielding structure is simple and the installation and operation are convenient and fast.
Referring to fig. 3, in another embodiment of the present invention, the light shielding structure is a single-sided adhesive 130, an adhesive surface of the single-sided adhesive 130 is adhered to a bottom wall of the sinking groove 111, a non-adhesive surface of the single-sided adhesive 130 is connected to the reflective film 200 through a second double-sided adhesive 140, and specifically, the second double-sided adhesive 140 is adhered between the single-sided adhesive 130 and the reflective film 200, so as to fix the reflective film 200, further, as shown in fig. 3, a left end of the second double-sided adhesive 140 does not protrude out of a left end of the reflective film 200, so as to prevent the second double-sided adhesive 140 from contacting and adhering with the LED420 when the light source 400 is installed.
Referring to fig. 2, in some embodiments of the present invention, the frame 100 is connected to the rubber frame 150, the circuit board 410 is mounted on the upper end of the rubber frame 150 to be indirectly connected to the frame 100, and the rubber frame 150 is disposed, so that the circuit board 410 is prevented from directly contacting the frame 100 and the circuit board 410 is prevented from being worn; in addition, the circuit board 410 extends above the light guide plate 300 and is connected to the light guide plate 300 to improve the connection strength and stability of the circuit board 410, and it is conceivable that the circuit board 410 can be glued to the light guide plate 300 and the upper end of the glue frame 150, respectively, which is simple in structure and convenient to operate.
Referring to fig. 2, in some embodiments of the present invention, the frame 100 further includes four side plates 160 vertically disposed at the edge of the bottom plate 110 and extending upward, specifically, four side plates 160 are respectively connected to four edges of the bottom plate 110 and are sequentially connected to form a whole, further, the rubber frame 150 is a square frame, and steps 151 are disposed at four edges of the rubber frame 150, and the steps 151 abut against the inner sides of the side plates 160, specifically, the steps 151 have two mutually perpendicular connection surfaces, and the two connection surfaces are respectively attached to the upper surface and the inner side surface of the side plates 160, so that the connection between the rubber frame 150 and the frame 100 is more stable and is not prone to generate deviation, and it is conceivable that the rubber frame 150 may be welded to the frame 100 or may be adhesively connected to the frame; it is understood that the light guide plate 300, the reflective film 200, the LED420, and the like in the present embodiment are all disposed in the area surrounded by the adhesive frame 150.
Referring to fig. 2, in some embodiments of the present invention, a positioning column 152 is disposed at a connection portion of the rubber frame 150 and the circuit board 410, a positioning hole 411 is disposed on the circuit board 410, and the positioning column 152 is inserted into the positioning hole 411, so that the circuit board 410 can be conveniently positioned when being installed, thereby simplifying the operation, and meanwhile, the circuit board 410 can be limited after being installed, so as to prevent the circuit board 410 from shifting and affecting the light efficiency.
Referring to fig. 2, in some embodiments of the present invention, a light shielding adhesive 310 is disposed above the light guide plate 300, the light shielding adhesive 310 contacts with an upper surface of the circuit board 410 and extends to an upper side of the light guide plate 300, further, a diffusion film 320, a lower brightness enhancement film 330 and an upper brightness enhancement film 340 are sequentially disposed between the light guide plate 300 and the light shielding adhesive 310 from bottom to top, specifically, the diffusion film 320, the lower brightness enhancement film 330 and the upper brightness enhancement film 340 may be adhered to each other and may also be compressed together by other structures, in this embodiment, the diffusion film 320 is disposed to diffuse light received by the light guide plate 300, so as to widen a viewing angle, and by disposing the lower brightness enhancement film 330 and the upper brightness enhancement film 340, light brightness is improved.
The mobile phone according to the second aspect of the present invention includes the ultra-thin backlight module provided in any of the above embodiments, and has all the advantages brought by any of the above embodiments due to the adoption of the technical solutions of any of the above embodiments, and details are not repeated here.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. An ultra-thin backlight module, comprising:
a frame (100) comprising a base plate (110);
a reflective film (200) provided on the upper surface of the base plate (110);
the light guide plate (300) is arranged on the upper surface of the reflecting film (200) and is provided with a light incident surface (301) arranged at the side end, and the light incident surface (301) extends out of the side end of the reflecting film (200);
the light source (400) comprises a circuit board (410) and an LED (420) arranged on the circuit board (410), the LED (420) is positioned between the circuit board (410) and the bottom plate (110), the LED (420) is provided with a light-emitting surface (421), and the light-emitting surface (421) and the light-incident surface (301) are arranged in an aligned mode;
one end, close to the light source (400), of the bottom plate (110) is provided with a downward-concave sinking groove (111), a shading structure which does not protrude out of the sinking groove (111) is arranged in the sinking groove (111), one end of the shading structure is connected with the reflecting film (200), and the other end of the shading structure extends to the lower portion of the LED (420).
2. The ultra-thin backlight module as claimed in claim 1, wherein the light shielding structure is a first double sided adhesive (120).
3. The ultra-thin backlight module as claimed in claim 1, wherein the light shielding structure is a single-sided adhesive (130), the adhesive surface of the single-sided adhesive (130) is adhered to the bottom wall of the sinking groove (111), and the single-sided adhesive (130) is connected to the reflective film (200) through a second double-sided adhesive (140).
4. The ultra-thin backlight module as claimed in claim 1, wherein a plastic frame (150) is connected to the frame (100), the circuit board (410) is mounted on the plastic frame (150), and the circuit board (410) extends above the light guide plate (300) and is connected to the light guide plate (300).
5. The ultra-thin backlight module as claimed in claim 4, wherein the frame (100) further comprises a side plate (160) vertically disposed at an edge of the bottom plate (110) and extending upward, a step (151) is disposed on the rubber frame (150), and the step (151) abuts against an inner side of the side plate (160).
6. The ultra-thin backlight module as claimed in claim 4, wherein a positioning post (152) is disposed at a connection portion of the rubber frame (150) and the circuit board (410), a positioning hole (411) is disposed on the circuit board (410), and the positioning post (152) is inserted into the positioning hole (411).
7. The ultra-thin backlight module as claimed in claim 1, wherein a light shielding adhesive (310) is disposed above the light guide plate (300), and a diffusion film (320), a lower brightness enhancement film (330) and an upper brightness enhancement film (340) are disposed between the light guide plate (300) and the light shielding adhesive (310).
8. A cellular phone, comprising:
the ultra-thin backlight module of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121759194.5U CN215813424U (en) | 2021-07-29 | 2021-07-29 | Ultrathin backlight module and mobile phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121759194.5U CN215813424U (en) | 2021-07-29 | 2021-07-29 | Ultrathin backlight module and mobile phone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215813424U true CN215813424U (en) | 2022-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121759194.5U Active CN215813424U (en) | 2021-07-29 | 2021-07-29 | Ultrathin backlight module and mobile phone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215813424U (en) |
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2021
- 2021-07-29 CN CN202121759194.5U patent/CN215813424U/en active Active
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