CN213781459U

CN213781459U - Backlight module for preventing middle frame from expanding outwards and display device

Info

Publication number: CN213781459U
Application number: CN202120090604.5U
Authority: CN
Inventors: 鲁景阳; 曹俊威; 刘子平; 冯超
Original assignee: Shenzhen Hadbest Electronics Co ltd
Current assignee: Shenzhen Hadbest Electronics Co ltd
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2021-07-23
Anticipated expiration: 2031-01-13

Abstract

The utility model provides a prevent backlight unit that center expands outward, includes lower frame, center and sticky tape, and the center is connected with the lower frame, and the center sets up round the circumference of lower frame, and one side of sticky tape is connected in the lower frame, and the opposite side of sticky tape is connected in the center, and the center passes through the sticky tape and stereotypes. The utility model discloses a prevent that backlight unit that the center expands outward can solve the too big problem in clearance behind center and the lower frame assembly, avoids appearing the abnormal sound phenomenon in the use. The utility model discloses still relate to a display device.

Description

Backlight module for preventing middle frame from expanding outwards and display device

Technical Field

The utility model relates to a display technical field, in particular to prevent backlight unit and display device that center expands outward.

Background

In recent years, the multi-screen development of the vehicle-mounted display brings new opportunities for the development of panel manufacturers, the vehicle-mounted terminal in China has huge market potential and wide development prospect, the market demand of the vehicle-mounted display is directly driven, the requirement of the vehicle-mounted display on vibration abnormal sound is made to be strict, one of main reasons for the abnormal sound of the vehicle-mounted display is that the assembly gap between a middle frame and a lower iron frame is too large, the middle frame of the vehicle-mounted display is usually formed by punching, and in the forming process, the frame edge of the middle frame can deform, so that after the middle frame and the lower iron frame with deformed frames are assembled, a larger gap can exist between the middle frame and the lower iron frame due to the deformation of the frame edge of the middle frame, the phenomenon of the abnormal sound of the vehicle-mounted display exists in the using process, and the driving experience of drivers is directly influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses a prevent backlight unit that middle frame expands outward can solve the too big problem in clearance behind middle frame and the lower frame assembly, avoids appearing the abnormal sound phenomenon in the use.

The utility model provides a prevent backlight unit that center expands outward, includes lower frame, center and sticky tape, and the center is connected with the lower frame, and the center sets up round the circumference of lower frame, and one side of sticky tape is connected in the lower frame, and the opposite side of sticky tape is connected in the center, and the center passes through the sticky tape and stereotypes.

The utility model discloses in, above-mentioned lower frame includes side frame and bottom plate, and side frame fixed connection is on the bottom plate, and the center is connected in the side frame, and one side of sticky tape is connected in the outer wall of center, and the opposite side of sticky tape is connected in the bottom plate.

The utility model discloses in, above-mentioned lower frame and center all include first frame limit, second frame limit, third frame limit and fourth frame limit, and first frame limit, second frame limit, third frame limit and fourth frame limit all are connected with the sticky tape.

The utility model discloses in, above-mentioned first frame limit is connected with a plurality of sticky tapes, prevents that the backlight unit that the center expands still includes system board and a plurality of winding displacement, and the one end and the system board electric connection of each winding displacement, the other end of each winding displacement stretches out from first frame limit, and each sticky tape on the first frame limit corresponds the setting with each winding displacement.

The utility model discloses in, the outer wall that above-mentioned center corresponds first frame limit is equipped with a plurality of grooves of dodging that correspond with each sticky tape, and one side of sticky tape is pasted and is being dodged the inslot, and the winding displacement is located and is dodged in the groove.

In the present invention, the second frame, the third frame and the fourth frame are connected to a tape.

In the utility model, the thickness of the adhesive tape is 0.02 mm-0.06 mm.

The utility model discloses in, be formed with the holding chamber between above-mentioned side frame and the bottom plate, the backlight unit that prevents that the center from expanding outward includes reflectance coating, light guide plate and optics diaphragm, and the holding intracavity is located to reflectance coating, light guide plate and optics diaphragm, and the reflectance coating is fixed on the bottom plate, and the light guide plate setting is on the reflectance coating, optics diaphragm and light guide plate fixed connection.

The utility model discloses in, above-mentioned backlight unit who prevents that the center from expanding outward still includes the lamp strip, and the lamp strip sets up in the holding chamber, and the lamp strip is located between the income plain noodles of side frame and light guide plate.

The utility model discloses still relate to a display device, including the above-mentioned backlight unit that prevents the center from expanding outward.

The utility model discloses a prevent that backlight unit that center expands from add the sticky tape between center and lower frame, wrap up through the sticky tape with center and lower frame and make closely laminating between center and the lower frame, solve the problem that has the clearance after center and lower frame assemble, avoid backlight unit abnormal sound phenomenon to appear in the use, improve the quality of product, bring better driving experience for navigating mate.

Drawings

Fig. 1 is a schematic structural diagram of the middle frame and the lower frame of the present invention.

Fig. 2 is a schematic view of the bottom structure of the middle frame and the lower frame of the present invention after the middle frame and the lower frame are engaged with each other.

Fig. 3 is a schematic view of the split structure of the backlight module for preventing the middle frame from expanding outward according to the present invention.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In order to facilitate understanding of those skilled in the art, the present application provides a specific implementation process of the technical solution provided by the present application through the following embodiments.

Fig. 1 is the utility model discloses a center and lower frame complex structure schematic diagram, fig. 2 is the utility model discloses a structural schematic is looked from the bottom up of attached sticky tape behind center and the lower frame cooperation, fig. 3 is the utility model discloses a prevent split structural schematic of backlight unit that the center expands outward, as shown in fig. 1, fig. 2 and fig. 3, prevent that backlight unit 10 that the center expands outward includes lower frame 11, center 12 and sticky tape 13, center 12 is connected with lower frame 11, center 12 sets up round the circumference of lower frame 11, and one side of sticky tape 13 is connected in lower frame 11, and the opposite side of sticky tape 13 is connected in center 12, and center 12 is stereotyped through sticky tape 13. In this embodiment, a plurality of clamping blocks 113 are disposed on the lower frame 11, a plurality of clamping holes 103 matched with the clamping blocks 113 are disposed on the outer wall of the middle frame 12, and the clamping blocks 113 and the clamping holes 103 are clamped, matched and fixedly connected to the middle frame 12 and the lower frame 11.

The utility model discloses a prevent that backlight unit 10 of center external expanding from addding sticky tape 13 between center 12 and lower frame 11, through sticky tape 13 with center 12 and lower frame 11 parcel messenger center 12 and lower frame 11 between closely laminating, there is the problem in clearance after solving center 12 and the 11 assembly of lower frame, avoid backlight unit the phenomenon of abnormal sound to appear in the use, improve the quality of product, bring better driving experience for the navigating mate.

Further, the lower frame 11 includes a side frame 111 and a bottom plate 112, the side frame 111 is fixedly connected to the bottom plate 112, the middle frame 12 is connected to the side frame 111, one side of the adhesive tape 13 is connected to the outer wall of the middle frame 12, and the other side of the adhesive tape 13 is connected to the bottom plate 112. In the present embodiment, the shape of the tape 13 is, for example, an L shape, but not limited thereto.

Further, the lower frame 11 and the middle frame 12 each include a first frame edge 10a, a second frame edge 10b, a third frame edge 10c, and a fourth frame edge 10d, and the first frame edge 10a, the second frame edge 10b, the third frame edge 10c, and the fourth frame edge 10d are each connected with an adhesive tape 13. In this embodiment, the first frame edge 10a is disposed parallel to the third frame edge 10c, the second frame edge 10b is disposed parallel to the fourth frame edge 10d, the first frame edge 10a and the third frame edge 10c are perpendicularly connected to the second frame edge 10b and the fourth frame edge 10d, the first frame edge 10a, the second frame edge 10b, the third frame edge 10c and the fourth frame edge 10d are connected to each other and disposed around the display area, and the adhesive tape 13 fixes the lower frame 11 and the middle frame 12 to prevent an assembly gap from occurring.

Further, the first frame edge 10a is connected with a plurality of adhesive tapes 13, the backlight module 10 for preventing the middle frame from expanding further comprises a system board and a plurality of flat cables, one end of each flat cable is electrically connected with the system board, the other end of each flat cable extends out of the first frame edge 10a, and each adhesive tape 13 on the first frame edge 10a is arranged corresponding to each flat cable.

Furthermore, the outer wall of the middle frame 12 corresponding to the first frame edge 10a is provided with a plurality of avoiding grooves 101 corresponding to the tapes 13, one side of the tape 13 is adhered in the avoiding groove 101, and the flat cable is arranged in the avoiding groove 101. In this embodiment, the outer wall of the first frame edge 10a is provided with three avoiding grooves 101, one side of the adhesive tape 13 is adhered in the avoiding groove 101, the other side of the adhesive tape 13 is adhered on the bottom plate 112, and the flat cable is disposed in the avoiding groove 101 adhered with the adhesive tape 13, so that the flat cable can be prevented from being cut by burrs or burrs at the edge of the first frame edge 10a, the flat cable is prevented from being broken or semi-broken, and the phenomenon of black screen or flickering of the backlight module is avoided.

Further, the second frame border 10b, the third frame border 10c and the fourth frame border 10d are each connected with an adhesive tape 13.

Further, the thickness of the adhesive tape 13 is 0.02mm to 0.06 mm. In the present embodiment, the thickness of the adhesive tape 13 is, for example, 0.03mm or 0.05mm, but not limited thereto.

Further, the material of the tape 13 is, for example, black single-sided adhesive, Lide or TG174-6, but not limited thereto.

Further, an accommodating cavity is formed between the side frame 111 and the bottom plate 112, the backlight module 10 for preventing the middle frame from expanding outward includes a reflective film 14, a light guide plate 15 and an optical film 16, the reflective film 14, the light guide plate 15 and the optical film 16 are disposed in the accommodating cavity, the reflective film 14 is fixed on the bottom plate 112, the light guide plate 15 is disposed on the reflective film 14, and the optical film 16 is fixedly connected with the light guide plate 15. In this embodiment, a positioning block (not shown) is disposed on the light guide plate 15, a positioning groove 102 is disposed on the optical film 16 and matches with the positioning block, and the positioning block and the positioning groove 102 are mutually engaged to fixedly connect the light guide plate 15 and the optical film 16.

Further, the optical film 16 includes a diffusion film 161, a lower brightness enhancement film 162, an upper brightness enhancement film 163 and a brightness enhancement film 164, the diffusion film 161 is fixedly connected to the light guide plate 15, the lower brightness enhancement film 162 is disposed on the diffusion film 161, the upper brightness enhancement film 163 is disposed on the lower brightness enhancement film 162, and the brightness enhancement film 164 is disposed on the upper brightness enhancement film 163.

Further, the backlight module 10 for preventing the middle frame from expanding outward further comprises a light bar, the light bar is arranged in the accommodating cavity, and the light bar is located between the light incident surface of the side frame 111 and the light guide plate 15. In this embodiment, the light bar is fixedly connected to the side frame 111 by using a double-sided tape.

Further, prevent that backlight unit 10 of center from expanding outward still includes bubble celloidin 17, bubble celloidin 17 fixed connection is on center 12, and bubble celloidin 17 is used for fixed buffering display screen.

The utility model discloses still relate to a display device, including foretell backlight unit 10 that prevents that the center from expanding outward. In the present embodiment, the display device is, for example, a vehicle-mounted DVD navigator, a P-DVD, a GPS navigator, a vehicle-mounted industrial control and navigator, an industrial control medical device, and the like, but not limited thereto.

The utility model discloses not be limited to the specific details among the above-mentioned embodiment the utility model discloses a within the technical idea scope, can be right the technical scheme of the utility model carry out multiple simple variant, these simple variants all belong to the utility model discloses a protection scope. The various features described in the foregoing detailed description may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

Claims

1. The utility model provides a prevent backlight unit that center expands, characterized in that, includes lower frame (11), center (12) and sticky tape (13), center (12) with lower frame (11) are connected, center (12) round the circumference setting of lower frame (11), one side of sticky tape (13) connect in lower frame (11), the opposite side of sticky tape (13) connect in center (12), center (12) pass through sticky tape (13) are stereotyped.

2. The backlight module of claim 1, wherein the bottom frame (11) comprises a side frame (111) and a bottom plate (112), the side frame (111) is fixedly connected to the bottom plate (112), the middle frame (12) is connected to the side frame (111), one side of the adhesive tape (13) is connected to the outer wall of the middle frame (12), and the other side of the adhesive tape (13) is connected to the bottom plate (112).

3. The backlight module of claim 2, wherein the lower frame (11) and the middle frame (12) each comprise a first frame edge (10a), a second frame edge (10b), a third frame edge (10c), and a fourth frame edge (10d), and the adhesive tape (13) is connected to each of the first frame edge (10a), the second frame edge (10b), the third frame edge (10c), and the fourth frame edge (10 d).

4. The backlight module for preventing the expansion of the middle frame as claimed in claim 3, wherein the first frame edge (10a) is connected with a plurality of the adhesive tapes (13), the backlight module (10) further comprises a system board and a plurality of flat cables, one end of each flat cable is electrically connected with the system board, the other end of each flat cable extends from the first frame edge (10a), and each adhesive tape (13) on the first frame edge (10a) is disposed corresponding to each flat cable.

5. The backlight module of claim 4, wherein a plurality of avoiding grooves (101) corresponding to the tapes (13) are formed on the outer wall of the middle frame (12) corresponding to the first frame edge (10a), one side of each tape (13) is adhered to the inside of each avoiding groove (101), and the flat cable is disposed in each avoiding groove (101).

6. The backlight module of claim 3, wherein the second frame edge (10b), the third frame edge (10c) and the fourth frame edge (10d) are connected to one of the adhesive tapes (13).

7. The backlight module for preventing the outer frame from expanding as claimed in any one of claims 1 to 6, wherein the thickness of the adhesive tape (13) is 0.02mm to 0.06 mm.

8. The backlight module of claim 2, wherein a receiving cavity is formed between the side frame (111) and the bottom plate (112), the backlight module (10) comprises a reflective film (14), a light guide plate (15) and an optical film (16), the reflective film (14), the light guide plate (15) and the optical film (16) are disposed in the receiving cavity, the reflective film (14) is fixed on the bottom plate (112), the light guide plate (15) is disposed on the reflective film (14), and the optical film (16) is fixedly connected to the light guide plate (15).

9. The backlight module preventing the middle frame from expanding outwards as set forth in claim 8, wherein the backlight module (10) further comprises a light bar disposed in the accommodating cavity, and the light bar is located between the side frame (111) and the light incident surface of the light guide plate (15).

10. A display device, comprising the backlight module of any one of claims 1 to 9 for preventing the middle frame from expanding outward.