CN209746318U - Firm side-mounted backlight module, display module and terminal equipment - Google Patents

Abstract

The utility model discloses a firm side pastes formula backlight unit, display module assembly and terminal equipment, wherein firm side pastes formula backlight unit includes: backlight unit body, backlight unit body includes: the light guide plate in the chase, locate the light source subassembly of light guide plate one side, the light source subassembly includes FPC, welding a plurality of LED lamps on the FPC, with the golden finger that FPC is connected, FPC includes FPC first body, FPC second body, connects the FPC kink of FPC first body and FPC second body, FPC first body is pasted and is fixed in the chase inside wall, FPC second body is pasted and is fixed in the chase bottom surface, the golden finger stretches out after buckling the chase. The utility model discloses the bonding area of FPC and chase has been increased for it is more firm to bond, can prevent to produce and explode lamp, lantern eye scheduling problem, can let the circuit on the FPC space of arranging bigger simultaneously, prevents that the clearance is too narrow and produce the short circuit problem between the FPC last circuit.

Description

Firm side-mounted backlight module, display module and terminal equipment

Technical Field

The utility model relates to a display module assembly technical field especially relates to a firm side pastes formula backlight unit, display module assembly and terminal equipment.

Background

At present, terminal equipment with a high-screen occupation ratio display screen and a special-shaped display screen on the market is more and more favored by consumers, the high-screen occupation ratio design is improved on the premise that the traditional mobile phone appearance is inconvenient, the screen occupation ratio is increased, the mobile phone frame is reduced, and better visual experience is brought to the consumers.

Referring to fig. 1, one side of an FPC 3a in the existing side-mounted backlight module is bonded to a side wall of an iron frame 1a through a double-sided adhesive tape, an LED lamp 5a is welded to the other side of the FPC 3a, the top of the LED lamp 5a faces a light incident surface of a light guide plate 2a, and a gold finger 4a is bent and extended out of the backlight module. However, the golden finger 4a is bent and extended out of the backlight module, and the bonding area between the FPC 3a and the side wall of the iron frame 1a is small and not firm enough, so that the FPC 3a is easy to warp, the LED lamp 5a is displaced to generate the phenomena of lamp explosion and lamp eyes, and the structural stability and the visual effect of the module are influenced.

Accordingly, the prior art is deficient and needs improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, provide a firm side pastes formula backlight unit, display module assembly and terminal equipment.

The technical scheme of the utility model as follows: the utility model provides a firm side pastes formula backlight unit, display module assembly and terminal equipment, include: the backlight module body, the backlight module body includes: the iron frame, locate light guide plate in the iron frame, locate the light source subassembly of light guide plate one side, the light source subassembly includes FPC, welding a plurality of LED lamps on the FPC, with the golden finger that FPC is connected, FPC includes FPC first body, FPC second body, connects the FPC kink of FPC first body and FPC second body, FPC first body is pasted and is fixed in the iron frame inside wall, FPC second body is pasted and is fixed in bottom surface in the iron frame, the golden finger stretches out after buckling the iron frame.

Furthermore, the FPC bending part is only provided with a window on the front side or the back side.

Further, the front side and the back side of the FPC bending part are provided with windows.

Further, the first FPC body is fixed to the inner side wall of the iron frame through a double-faced adhesive tape.

Further, the double-sided adhesive tape is a substrate-free double-sided adhesive tape.

Further, the double-sided adhesive tape is a foam double-sided adhesive tape.

Furthermore, the FPC bending part is provided with a pre-broken wire.

Further, the backlight module body is further provided with a reflecting film arranged on the reflecting surface of the light guide plate, and a diffusion film, a lower brightness enhancement film and an upper brightness enhancement film which are sequentially arranged on the light emitting surface of the light guide plate from bottom to top in a stacking mode.

The utility model also provides a display module assembly, display module assembly adopts above-mentioned backlight unit.

The utility model also provides a terminal equipment, terminal equipment adopts above-mentioned display module assembly.

According to the above technical scheme, the utility model discloses the bonding area of FPC and chase has been increased for it is more firm to bond, can prevent to produce and explode lamp, lantern eye scheduling problem, and the circuit that can let FPC simultaneously arranges the space bigger, prevents that the clearance is too narrow and produce the short circuit problem between the FPC last circuit.

Drawings

Fig. 1 is a schematic structural diagram of a backlight module in the prior art.

Fig. 2 is a schematic structural diagram of a backlight module according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of an extended state of the FPC according to an embodiment of the present invention.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is a schematic view of windowing by using two FPCs according to an embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to fig. 2 to 4, in the present embodiment, the present invention provides a firm side-mounted backlight module, including: the backlight module body, the backlight module body includes: chase 1, locate light guide plate 2 in the chase 1, locate the light source subassembly of 2 one sides of light guide plate, the light source subassembly includes FPC, welding a plurality of LED lamps 5 on the FPC, with the golden finger 4 that FPC is connected, FPC includes FPC first body 31, FPC second body 32, connects the FPC kink 33 of FPC first body 31 and FPC second body 32, FPC first body is fixed in through 6 pastes of double faced adhesive tape 1 inside wall of chase, FPC second body 32 pastes and is fixed in 1 inner bottom surface of chase, stretch out after 4 buckles of golden finger chase 1. The double-sided adhesive tape 6 can be a double-sided adhesive tape without a base material; also can be a foam double-sided adhesive tape, which can improve the buffering effect. The FPC second body 32 may also be fixed to the bezel 1 by using a double-sided tape. In this embodiment, the FPC bending portion 33 is only provided with a window on the front surface, so that the stress can be reduced and the bending performance can be improved. Similarly, the utility model discloses the windowing of FPC kink also can only be established in reverse side department, no longer gives unnecessary details here. The backlight module body is characterized by further comprising a reflecting film arranged on the reflecting surface of the light guide plate 2, and a diffusion film, a lower brightness enhancement film and an upper brightness enhancement film (which are not marked) which are sequentially stacked from bottom to top on the light emitting surface of the light guide plate 2. Because a in fig. 2 is warped due to bending, the bonding area between the FPC and the bezel 1 can be increased by fixing the FPC first body 31 and the FPC second body to the bezel 1, and a better bonding effect is provided. Meanwhile, the width of the FPC is prolonged, the arrangement space of the circuits on the FPC is increased, and the problem that the flat cable of the FPC is too narrow and easy to short circuit can be prevented.

Referring to fig. 3 and 4, fig. 3 is a schematic view illustrating an unfolded state of the FPC, and the FPC bending portion 33 is provided with a pre-breaking line L, so that the bending portion 33 can be conveniently bent and the stress can be reduced. The utility model discloses in the broken string in advance in the FPC buckling part and windowing can the alternative use of the two, also can both use simultaneously.

Referring to fig. 5, the present invention further provides another embodiment, in which the LED lamp 5b is soldered on the FPC3b, and the FPC bending portion 33b of the FPC3b has windows on the front and the back, so that the bending performance is better.

The utility model also provides a display module assembly, display module assembly is liquid crystal display module assembly, display module assembly uses above-mentioned backlight unit.

The utility model also provides a terminal equipment, terminal equipment uses above-mentioned display module assembly.

To sum up, the utility model discloses the bonding area of FPC and chase has been increased for it is more firm to bond, can prevent to produce and explode lamp, lantern eye scheduling problem, and it is bigger to let the circuit space of arranging on FPC simultaneously, prevents that the clearance is too narrow and produce the short circuit problem between the FPC last circuit.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The utility model provides a firm side pastes formula backlight unit which characterized in that includes: the backlight module body, the backlight module body includes: the iron frame, locate light guide plate in the iron frame, locate the light source subassembly of light guide plate one side, the light source subassembly includes FPC, welding a plurality of LED lamps on the FPC, with the golden finger that FPC is connected, FPC includes FPC first body, FPC second body, connects the FPC kink of FPC first body and FPC second body, FPC first body is pasted and is fixed in the iron frame inside wall, FPC second body is pasted and is fixed in bottom surface in the iron frame, the golden finger stretches out after buckling the iron frame.

2. The robust side mount backlight module of claim 1, wherein the FPC bending portion has windows on only the front side or only the back side.

3. The robust side mount backlight module of claim 1, wherein the FPC includes a window on both the front and back sides of the FPC bending portion.

4. The robust side mount backlight module according to claim 1, wherein the FPC first body is secured to the inside wall of the bezel by a double-sided adhesive tape.

5. The robust side mount backlight module according to claim 4, wherein the double-sided tape is a substrate-less double-sided tape.

6. The backlight module of claim 4, wherein the double-sided tape is a foam double-sided tape.

7. The backlight module as claimed in claim 1, wherein the FPC bending portion is provided with a pre-cut line.

8. The backlight module of any one of claims 1 to 7, wherein the backlight module further comprises a reflective film disposed on the reflective surface of the light guide plate, and a diffusion film, a lower brightness enhancement film and an upper brightness enhancement film sequentially stacked on the light-emitting surface of the light guide plate from bottom to top.

9. A display module using the robust side-mounted backlight module as claimed in any one of claims 1 to 8.

10. A terminal device, characterized in that the terminal device uses the display module of claim 9.