CN217521461U - Backlight source structure for improving backlight brightness - Google Patents

Abstract

The utility model discloses an improve backlight structure of backlight luminance belongs to backlight unit technical field, including frame support, light guide plate, flexible line way board and module mechanism, the light guide plate install in inside the frame support, the inboard bottom of frame support has evenly seted up the dead slot, the dead slot is located under the light guide plate, the dead slot bottom has seted up the reflecting groove that is "U" shape, evenly install the LED lamp through being provided with interior heat conduction double faced adhesive tape on the flexible line way board, the LED lamp is placed in between the dead slot and the reflecting groove inside, the dead slot with the reflecting groove is integrated into one piece structure, and the inner wall all coats and is covered with silver-colored reflectance coating; the LED lamp radiating structure can improve the radiating efficiency of the LED lamp when in use, so that the radiating of the LED lamp is enhanced, the stable work of the LED lamp is ensured, meanwhile, the waste of a light source in the transmission process is reduced, and the display effect is improved.

Description

Backlight source structure for improving backlight brightness

Technical Field

The utility model relates to a backlight unit technical field, more specifically say, relate to an improve backlight structure of luminance in a poor light.

Background

At present, a color screen mobile phone has completely replaced a black-and-white mobile phone to become the mainstream of the mobile phone market, the color screen mobile phone generally adopts a color liquid crystal display, and the color liquid crystal display does not emit light, so that an illumination system arranged at the bottom of the color screen mobile phone is needed, namely a backlight module, and the basic requirement of the backlight module is to provide illumination with enough brightness and high uniformity for the color liquid crystal display so as to have enough high contrast and display quality in daily use, so that the design of the backlight module is the key of the color display effect of the color liquid crystal display of the mobile phone.

However, the current various screen cell-phone backlight unit is because the light source generates heat and leads to using the luminous unstable after a period of time, the not enough problem of luminance, and then it is poor to lead to the various display effect of colored liquid crystal display, the inevitable error of LED lamp when the assembly simultaneously, when leading to light guide plate and LED lamp to hug closely, there is some LED lamp can have certain clearance with the light guide plate, lead to light to have some to be reflected, there is some loss when the conduction in the air, all can cause the not complete utilization of LED light above, the loss of light source has been caused extravagantly.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

To the problem that exists among the prior art, the utility model aims to provide an improve backlight structure of luminance in a poor light, it can realize improving the radiating efficiency of LED lamp when using for the heat dissipation of LED lamp obtains the reinforcing, guarantees the stable work of LED lamp, reduces the waste of light source in transmission course simultaneously, thereby promotes the display effect.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

The utility model provides an improve backlight structure of luminance in a poor light, includes frame support, light guide plate, flexible line way board and module mechanism, the light guide plate install in inside the frame support, the dead slot has evenly been seted up to the inboard bottom of frame support, the dead slot is located under the light guide plate, the reflection groove that is "U" shape is seted up to the dead slot bottom, evenly install the LED lamp through being provided with interior heat conduction double faced adhesive tape on the flexible line way board, the LED lamp place in the dead slot with between the reflection inslot portion, the dead slot with the reflection groove is the integrated into one piece structure, and the inner wall has all coated silver reflectance coating.

Further, module mechanism is including from type membrane, reflectance coating, diffusion barrier, prism membrane and diffusion membrane of adding lustre to, after the diffusion barrier, prism membrane and the diffusion membrane of adding lustre to superpose in proper order through transparent double faced adhesive tape install in the light guide plate is positive, the reflectance coating pass through transparent double faced adhesive tape install in the light guide plate back, from the type membrane pass through transparent double faced adhesive tape install in the reflectance coating back.

As a preferred technical scheme of the backlight structure of luminance in a poor light of improvement, be the surrounding type structure from the type membrane, from the type membrane with still be provided with the stop gear who is used for surrounding the installation between the frame support.

As the utility model provides an improve backlight structure of luminance in a poor light preferred technical scheme, stop gear including evenly set up in the spacing fixture block of frame support side and evenly set up in the spacing draw-in groove from the type membrane side, spacing fixture block with spacing draw-in groove phase-match, and the transversal half-round shape of personally submitting of combination.

As a preferred technical scheme of the backlight structure of luminance in a poor light of improvement, pass through from the type membrane spacing fixture block with spacing draw-in groove surrounds frame support lateral surface, just interior heat conduction double faced adhesive tape medial surface with the reflectance coating back is laminated mutually.

As a preferred technical scheme of the backlight structure of luminance in a poor light of improvement, evenly seted up the louvre from the type membrane bottom, the louvre is located the installation scope of LED lamp.

As the utility model provides an improve backlight structure of luminance in a poor light preferred technical scheme, diffusion membrane of adding lustre to is kept away from light guide plate side edge encircles and is provided with the black and white shading double-sided rubber ring that is used for being connected with screen unit, black and white shading double-sided rubber ring with be provided with black and white shading double-sided adhesive tape between the diffusion membrane of adding lustre to.

As the utility model provides an improve backlight structure of luminance in a poor light preferred technical scheme, frame support back bottom is provided with the outer heat conduction double faced adhesive tape that is used for being connected with cell-phone body subassembly, the heat dissipation through-hole has evenly been seted up on outer heat conduction double faced adhesive tape surface.

As the utility model provides an improve backlight structure of luminance in a poor light preferred technical scheme, frame support, light guide plate and module mechanism top have all seted up a recess, it is the drop form to push up the recess for the installation of cell-phone camera.

As the utility model provides an improve backlight structure of luminance in a poor light preferred technical scheme, the frame support is made for aluminum alloy material, and is the integrated into one piece structure.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

(1) this scheme is provided with interior heat conduction double faced adhesive tape, simultaneously from type membrane bottom seting up the louvre and evenly seted up the heat dissipation through-hole on outer heat conduction double faced adhesive tape surface, and the frame support is made for the aluminum alloy material, utilize aluminum base material to have good heat conduction and thermal diffusivity, heat conduction double faced adhesive tape in the cooperation simultaneously, louvre and outer heat conduction double faced adhesive tape, can improve flexible line way board and LED lamp radiating efficiency in the course of the work, thereby reduce operating temperature, thereby guarantee the stability of LED lamp, make the LED lamp provide the light source of stable luminance for the display screen at suitable temperature.

(2) This scheme is through keeping away empty groove and reflection inslot wall coating and have silver-colored reflectance coating, can make the light source that spills this region back get into the light guide plate by reutilization by reflecting again, reduces the loss of light source, improves the utilization ratio of light to make the light guide plate derive more light, thereby improve luminance in a poor light, improve the display effect of display screen.

(3) The release film is arranged and surrounds the back of the frame support, the frame support can be utilized, the tensile strength is high, the thermal stability is good, the thermal shrinkage rate is low, the surface is smooth and clean, sufficient protection is provided for the device, meanwhile, the release film is good in stripping performance, the release film can be repeatedly used, and the preparation cost can be reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic front perspective view of the present invention;

FIG. 2 is a schematic view of a back side three-dimensional structure of the present invention;

FIG. 3 is an exploded view of the present invention;

FIG. 4 is an enlarged view of part A of FIG. 3;

FIG. 5 is a partial exploded view of the present invention;

fig. 6 is a schematic diagram of a part B of fig. 5 in an enlarged structure.

The reference numbers in the figures illustrate:

1. a frame support; 2. a release film; 3. a reflective film; 4. a light guide plate; 5. a diffusion membrane; 6. a prism film; 7. a diffusion bright enhancement film; 8. black and white shading double-sided rubber ring; 9. an outer heat-conducting double-sided adhesive tape; 10. a flexible circuit board; 11. black and white shading double-sided adhesive tape; 12. an inner heat-conducting double-sided adhesive tape; 13. an empty avoiding groove; 14. an LED lamp; 15. a reflective trough; 16. a top groove; 17. a limiting clamping block; 18. a limiting clamping groove; 19. and (4) heat dissipation holes.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings. It is to be understood that the embodiments described are some, not all embodiments of the invention.

Thus, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of some embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

Example 1:

referring to fig. 1-6, a backlight source structure for improving backlight brightness includes a frame support 1, a light guide plate 4, a flexible circuit board 10 and a module mechanism, where the light guide plate 4 is installed inside the frame support 1, empty-avoiding grooves 13 are uniformly formed at the bottom end of the inner side of the frame support 1, the empty-avoiding grooves 13 are located right below the light guide plate 4, U-shaped reflection grooves 15 are formed at the bottom ends of the empty-avoiding grooves 13, LED lamps 14 are uniformly installed on the flexible circuit board 10 by arranging inner heat-conducting double-sided adhesive 12, the LED lamps 14 are placed between the empty-avoiding grooves 13 and the reflection grooves 15 and used for providing light sources, the empty-avoiding grooves 13 and the reflection grooves 15 are of an integrally formed structure, and the inner wall of the flexible circuit board is coated with a silver reflection film, so that the light sources leaked to this area can be reflected back to enter the light guide plate 4 for secondary utilization, thereby reducing loss of the light sources and improving utilization rate of the light.

Example 2:

as a further optimization of embodiment 1, referring to fig. 3, the module mechanism includes a release film 2, a reflective film 3, a diffusion film 5, a prism film 6 and a diffusion light-adding film 7, the diffusion film 5, the prism film 6 and the diffusion light-adding film 7 are sequentially stacked and then mounted on the front surface of the light guide plate 4 through a transparent double-sided adhesive tape, wherein the diffusion film 5 corrects a surface light source of a scattered propagation direction emitted from the light guide plate 4 to provide a uniform and soft light source for the liquid crystal display, the diffusion light-adding film 7 is used for concentrating light rays in a larger propagation direction into a smaller angle on the front surface to improve front luminance, and the reflective film 3 is mounted on the back surface of the light guide plate 4 through the transparent double-sided adhesive tape to reflect overflowing light sources and improve light source utilization rate, and the release film 2 is mounted on the back surface of the reflective film 3 through the transparent double-sided adhesive tape to provide protection for the device.

Referring to fig. 3 and 4, the release film 2 is of an enclosing structure, a limiting mechanism for enclosing installation is further arranged between the release film 2 and the frame support 1, the limiting mechanism comprises limiting fixture blocks 17 evenly arranged on the side edge of the frame support 1 and limiting fixture grooves 18 evenly arranged on the side edge of the release film 2, the limiting fixture blocks 17 are matched with the limiting fixture grooves 18, and the combined cross section is in a semicircular shape, so that the mutual installation is more stable and the separation is not easy to occur;

wherein, surround at frame support 1 lateral surface through spacing fixture block 17 and spacing draw-in groove 18 from type membrane 2, and interior heat conduction double faced adhesive tape 12 medial surface is laminated with the 3 backs of reflective membrane mutually, can be comprehensive protect the device back, improve structural strength.

Referring to fig. 3, the heat dissipation holes 19 are uniformly formed at the bottom end of the release film 2, and the heat dissipation holes 19 are located in the installation range of the LED lamp 14, so that the heat dissipation efficiency of the LED lamp 14 can be improved.

Referring to fig. 3 and 5, a black-and-white shading double-sided rubber ring 8 for connecting with a screen assembly is arranged around the edge of one side of the diffusion brightness enhancement film 7 away from the light guide plate 4, and a black-and-white shading double-sided rubber strip 11 is arranged between the black-and-white shading double-sided rubber ring 8 and the diffusion brightness enhancement film 7, so that light can be shielded or reflected, and waste of light sources is reduced.

Referring to fig. 3 and 5, the outer double-sided thermal conductive adhesive tape 9 for connecting with the mobile phone body assembly is disposed at the bottom end of the back side of the frame support 1, and the heat dissipation through holes are uniformly formed on the surface of the outer double-sided thermal conductive adhesive tape 9, so that the overall heat dissipation efficiency of the LED lamp 14 during operation can be improved, the operating temperature can be maintained at a proper height, and the stable operation of the LED lamp can be facilitated.

Example 3:

as further optimization of embodiment 2, referring to fig. 1-3, top grooves 16 are formed in the frame support 1, the light guide plate 4 and the top end of the module mechanism, and the top grooves 16 are in a water drop shape and used for mounting a camera of a mobile phone.

Referring to fig. 1 and 3, the frame bracket 1 is made of an aluminum alloy material, and may have good heat conduction and heat dissipation properties and an improved heat dissipation effect by using the aluminum alloy material, and may have an integrally formed structure, thereby having a higher structural strength and a stronger impact resistance.

When in use: by arranging the inner heat-conducting double-sided adhesive tape 12, arranging the heat dissipation holes 19 at the bottom end of the release film 2 and uniformly arranging the heat dissipation through holes on the surface of the outer heat-conducting double-sided adhesive tape 9, and making the frame support 1 of aluminum alloy material, the aluminum base material is utilized to have good heat conduction and heat dissipation performance, and the inner heat-conducting double-sided adhesive tape 12, the heat dissipation holes 19 and the outer heat-conducting double-sided adhesive tape 9 are simultaneously matched, so that the heat dissipation efficiency of the flexible circuit board 10 and the LED lamp 14 in the working process can be improved, the working temperature is reduced, the stability of the LED lamp 14 is ensured, the LED lamp 14 provides a light source with stable brightness for a display screen at a proper temperature, and meanwhile, the silver reflective films are coated on the inner walls of the clearance groove 13 and the reflective groove 15, so that the light source leaked to the area is reflected back to enter the light guide plate 4 to be recycled, the loss of the light source is reduced, the utilization rate of light is improved, and more light can be guided by the light guide plate 4, therefore, the backlight brightness is improved, and the display effect of the display screen is improved;

secondly, set up from type membrane 2, enclose it at the frame support 1 back, can utilize frame support 1 tensile strength high, thermal stability is good, the thermal shrinkage factor is low, the surface is level and smooth bright and clean, provides sufficient protection for the device, and simultaneously from type membrane 2 strippability good, can use repeatedly many times, can reduce manufacturing cost.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and the embodiments are provided so that this disclosure will be thorough and complete. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.

Claims (10)

1. The utility model provides an improve backlight structures of luminance in a poor light, includes frame support (1), light guide plate (4), flexible line way board (10) and module mechanism, its characterized in that: light guide plate (4) install in inside frame support (1), empty groove (13) have evenly been seted up to frame support (1) inboard bottom, empty groove (13) are located under light guide plate (4), empty groove (13) bottom is kept away and reflection groove (15) that are "U" shape are seted up, evenly install LED lamp (14) through being provided with interior heat conduction double faced adhesive tape (12) on flexible line way board (10), LED lamp (14) place in keep away empty groove (13) with between reflection groove (15) are inside, keep away empty groove (13) with reflection groove (15) are the integrated into one piece structure, and the inner wall has all been coated with silver-colored reflectance coating.

2. The backlight source structure for improving backlight brightness according to claim 1, wherein: module mechanism is including from type membrane (2), reflectance coating (3), diffusion barrier (5), prism membrane (6) and diffusion membrane (7) that adds lustre to, after stack in proper order diffusion barrier (5), prism membrane (6) and diffusion membrane (7) add lustre to install in light guide plate (4) are positive through transparent double faced adhesive tape, reflectance coating (3) install in light guide plate (4) back through transparent double faced adhesive tape, install in from type membrane (2) through transparent double faced adhesive tape reflectance coating (3) back.

3. The backlight source structure for improving backlight brightness according to claim 2, wherein: be from type membrane (2) and surround the type structure, from type membrane (2) with still be provided with the stop gear who is used for surrounding the installation between frame support (1).

4. A backlight source structure for improving backlight brightness according to claim 3, wherein: limiting mechanism including evenly set up in spacing fixture block (17) and the even seting up in frame support (1) side are from spacing draw-in groove (18) of type membrane (2) side, spacing fixture block (17) with spacing draw-in groove (18) phase-match, and the transversal semicircle form of personally submitting of combination.

5. The backlight source structure for improving backlight brightness according to claim 4, wherein: pass through from type membrane (2) spacing fixture block (17) with spacing draw-in groove (18) surround frame support (1) lateral surface, just interior heat conduction double faced adhesive tape (12) medial surface with the laminating of reflectance coating (3) back mutually.

6. The backlight source structure for improving backlight brightness according to claim 2, wherein: radiating holes (19) are uniformly formed in the bottom end of the release film (2), and the radiating holes (19) are located in the installation range of the LED lamp (14).

7. The backlight source structure for improving backlight brightness according to claim 2, wherein: the edge of one side surface, far away from the light guide plate (4), of the diffusion brightness enhancement film (7) is provided with a black-and-white shading double-sided rubber ring (8) in a surrounding mode, the black-and-white shading double-sided rubber ring is used for being connected with a screen assembly, and a black-and-white shading double-sided rubber strip (11) is arranged between the black-and-white shading double-sided rubber ring (8) and the diffusion brightness enhancement film (7).

8. The backlight source structure for improving backlight brightness according to claim 2, wherein: the mobile phone frame is characterized in that an outer heat-conducting double-sided adhesive tape (9) used for being connected with the mobile phone body assembly is arranged at the bottom end of the back face of the frame support (1), and heat dissipation through holes are uniformly formed in the surface of the outer heat-conducting double-sided adhesive tape (9).

9. The backlight source structure for improving backlight brightness according to claim 1, wherein: frame support (1), light guide plate (4) and module mechanism top have all seted up a recess (16), top recess (16) are the water droplet form for the installation of cell-phone camera.

10. The backlight source structure for improving backlight brightness according to claim 1, wherein: the frame support (1) is made of aluminum alloy materials and is of an integrally formed structure.

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