CN206057755U - Backlight module and display module - Google Patents
Backlight module and display module Download PDFInfo
- Publication number
- CN206057755U CN206057755U CN201621071533.XU CN201621071533U CN206057755U CN 206057755 U CN206057755 U CN 206057755U CN 201621071533 U CN201621071533 U CN 201621071533U CN 206057755 U CN206057755 U CN 206057755U
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- light guide
- backlight module
- flexible pcb
- guide plate
- plane
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Abstract
This utility model is related to a kind of backlight module and display module, and wherein backlight module includes light guide plate, glue frame, LED lamp bar, substrate tape and stiffening plate.The light guide plate includes wedge shaped area and flat board area, and the wedge shaped area includes the first inclined-plane, and the incident side of the light guide plate is located at the wedge shaped area.The glue frame is arranged around the light guide plate.The LED lamp bar is located at the incident side of the light guide plate, including flexible PCB and multiple LEDs, the flexible PCB includes parallel portion and kink, and the plurality of LED is disposed on the parallel portion of the flexible PCB, and the bending part is on the first inclined-plane of the light guide plate.The substrate tape includes the first bonding plane and the second bonding plane, and first bonding plane is mutually pasted near the side of the LED with the flexible PCB, and first inclined-plane and glue frame of second bonding plane and the light guide plate are mutually pasted.The stiffening plate is arranged on side of the flexible PCB away from the LED, positioned at the corresponding region of the kink of the flexible PCB.
Description
Technical field
This utility model is related to display field, more particularly to a kind of backlight module and the display mould comprising the backlight module
Group.
Background technology
With the continuous development of lcd technology, liquid crystal display module (Liquid Crystal Module, LCM) is
Applied in the electric terminals such as mobile phone, panel computer in large quantities.But, due to liquid crystal display module display floater itself simultaneously
There is no luminous function, it is therefore desirable to configure backlight module (Back Light Unit, BLU) to carry below display floater
For the light source required for which, and then reach the effect of display.
Of the prior art, as shown in Figures 1 and 2, backlight module includes light guide plate 11, glue frame 12, LED lamp bar 13 and base
Plate adhesive tape 14.The light guide plate 11 includes wedge shaped area 111 and flat board area 112, and the wedge shaped area 111 includes the first inclined-plane 1111；
The glue frame 12 is arranged around the light guide plate 11；The LED lamp bar 13 is located at the incident side 1112 of the light guide plate 11, including
Flexible PCB 131 and multiple LEDs 132, the flexible PCB 131 include parallel portion 1311 and kink 1312, described
Multiple LEDs 132 are disposed on the parallel portion 1311 of the flexible PCB 131, and the kink 1312 is located at described leading
On first inclined-plane 1111 of tabula rasa 11；The substrate tape 14, including the first bonding plane 141 and the second bonding plane 142, described
One bonding plane 141 is mutually pasted near the side of the LED 132 with the flexible PCB 131, second bonding plane 142
Mutually paste with first inclined-plane 1111 and glue frame 12 of the light guide plate 11.Due to the flexible PCB 11 be bent to form it is parallel
Portion 1311 and kink 1312, the kink 1312 rely on adhesion strength between substrate tape 14 and the first inclined-plane 1111 to protect
Hold the bending state of the kink 1312.Due to the material of the flexible PCB 11 and the substrate tape 14 it is very soft
It is soft, in production and assembly operation, be also easy to fold, bubble be produced in the marginal area of the kink 1312 or locally stick up
Song, so as to produce light leak, causes the LED lamp bar 13 to enter the light skewness in the flat board area 112 of the light guide plate 11,
The difference of brightness is shown, human eye can experience the excessively bright point in local, and custom is referred to as Lampyridea phenomenon in this phenomenon industry.
Utility model content
The purpose of this utility model is to provide a kind of flexible PCB of LED lamp bar warpage, reliability are less likely to occur
Backlight module and display module that high, light is evenly distributed.
A kind of first aspect, there is provided backlight module, including：
Light guide plate, including wedge shaped area and flat board area, the wedge shaped area and the flat board area are integrally formed, the wedge shaped area bag
The first inclined-plane is included, the incident side of the light guide plate is located at the wedge shaped area；
Glue frame, is arranged around the light guide plate；
LED lamp bar, positioned at the incident side of the light guide plate, including flexible PCB and multiple LEDs, the flexible circuit
Plate includes parallel portion and kink, and the plurality of LED is disposed on the parallel portion of the flexible PCB, the kink
On the first inclined-plane of the light guide plate；
Substrate tape, including the first bonding plane and the second bonding plane, first bonding plane are leaned on the flexible PCB
The side of the nearly LED is mutually pasted, and first inclined-plane and glue frame of second bonding plane and the light guide plate are mutually pasted；
Stiffening plate, is arranged on side of the flexible PCB away from the LED, positioned at the flexible PCB
The corresponding region of kink.
A kind of second aspect, there is provided display module, including display floater, shading rubber belt and the back of the body as described in relation to the first aspect
Light module, the backlight module are pasted by the shading rubber belt with the display floater and are connected.
Compared with prior art, the bending of the flexible PCB of the LED lamp bar of the backlight module and the display module
Portion is correspondingly arranged on stiffening plate, and the stiffening plate enhances the hardness of the kink region entirety so that the kink
Marginal area no longer easily produces fold, bubble or Local warping, is also greatly lowered the risk for thus producing light leak.So that
The LED lamp bar is evenly distributed into the light in the flat board area of the light guide plate, without the excessively bright phenomenon in local, so as to avoid by soft
The kink marginal area fold of property circuit board, bubble or Local warping and caused Lampyridea phenomenon.
Description of the drawings
Fig. 1 is the schematic perspective view of backlight module in prior art；
Fig. 2 is that the section when flexible PCB 131 of backlight module in prior art as shown in Figure 1 produces warpage is illustrated
Figure；
A kind of schematic perspective view of backlight module that Fig. 3 is provided for this utility model embodiment；
Fig. 4 is a kind of generalized section of backlight module as shown in Figure 3；
Fig. 5 is a kind of schematic top plan view of backlight module as shown in Figure 3；
Fig. 6 is a kind of generalized section of backlight module as shown in Figure 5 along CC ' lines；
A kind of generalized section of display module that Fig. 7 is provided for this utility model embodiment.
Description of reference numerals：
10 backlight module, 20 shading rubber belt, 30 display floater
11 light guide plate, 12 glue frame 13LED lamp bar
14 substrate tape, 15 stiffening plate, 16 diffusion sheet
111 wedge shaped area of brightening piece on 17 times brightening pieces 18
112 flat board area, 121 breach, 131 flexible PCB
141 first bonding plane of 132LED lamps, 142 second bonding plane
1111 first inclined-plane, 1112 incident side, 1,211 second inclined-plane
1311 parallel portion, 1312 kink
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that herein
Described specific embodiment is used only for explanation this utility model, rather than to restriction of the present utility model.Further need exist for
It is bright, for the ease of description, in accompanying drawing, illustrate only the part related to this utility model rather than entire infrastructure.
Specific embodiment one
Fig. 3 and Fig. 4 is refer to, the present embodiment provides a backlight module 10, the backlight module 10 that Fig. 3 is provided for the present embodiment
Schematic perspective view, Fig. 4 for Fig. 3 generalized section.The backlight module 10 includes：Light guide plate 11, glue frame 12, LED lamp bar
13rd, substrate tape 14 and stiffening plate 15.The glue frame 12 is arranged around the light guide plate 11, and the LED lamp bar 13 is located at described
The incident side 1112 of light guide plate 11, the substrate tape 14 is by the LED lamp bar 13 and the glue frame 12,11 company of pasting of light guide plate
Connect.The stiffening plate 15 is arranged on one side of the LED lamp bar 13 away from the light guide plate 11.
The light guide plate 11 includes wedge shaped area 111 and flat board area 112,112 one of the wedge shaped area 111 and the flat board area
Molding, the wedge shaped area 111 include the first inclined-plane 1111, and the incident side 1112 of the light guide plate 11 is located at the wedge shaped area 111.
The LED lamp bar 13 is located at the incident side 1112 of the light guide plate 11, including flexible PCB 131 and multiple LED
Lamp 132, the flexible PCB 131 include parallel portion 1311 and kink 1312, and the plurality of LED 132 is disposed on
The parallel portion 1311 of the flexible PCB 131, the kink 1312 are located at 1111 on the first inclined-plane of the light guide plate 11.
The substrate tape 14 includes the first bonding plane 141 and the second bonding plane 142, first bonding plane 141 and institute
State flexible PCB 131 mutually to paste near the side of the LED 132, second bonding plane 142 and the light guide plate 11
First inclined-plane 1111 and glue frame 12 are mutually pasted.
The stiffening plate 15 is arranged on side of the flexible PCB 131 away from the LED 132, positioned at described
The 1312 corresponding region of kink of flexible PCB 131.Make the stiffening plate 15 material can for epoxy plate (fr4),
Material of other hardness such as polyimides (pi), rustless steel (sus) more than 131 hardness of the flexible PCB.The stiffening plate
15 is rectangle.The thickness of the stiffening plate is 0.1mm～0.3mm.
Compared with prior art, the kink of the flexible PCB 131 of the LED lamp bar 13 of the backlight module 10 1312 pairs
Stiffening plate 15 should be provided with, the stiffening plate 15 enhances the hardness of 1512 region entirety of the kink so that the bending
The marginal area in portion 1312 no longer easily produces fold, bubble or Local warping, is also greatly lowered
Risk.So that the LED lamp bar 13 is evenly distributed into the light in the flat board area 112 of the light guide plate 11, it is excessively bright existing without local
As so as to avoid by the 1312 marginal area fold of kink of flexible PCB 131, bubble or Local warping and caused firefly
Fireworm phenomenon.
Specific embodiment two
The present embodiment is the further creation carried out on the basis of above-described embodiment one.Refer to Fig. 5 to Fig. 6, this reality
Apply example and one backlight module 10 is provided, Fig. 5 is a kind of schematic top plan view of backlight module 10 as shown in Figure 3, and Fig. 6 is such as Fig. 5 institutes
A kind of generalized section of the backlight module 10 for showing along CC ' lines.The backlight module 10 includes：Light guide plate 11, glue frame 12, LED
Lamp bar 13, substrate tape 14 and stiffening plate 15.
Two relative sides of the glue frame 12 are respectively arranged with a breach 121.The of 11 wedge shaped area 111 of the light guide plate
The angle of inclination on one inclined-plane 1111 is α (as shown in Figure 4), the angle of inclination beta of the bottom surface of the breach 121 and first inclined-plane
The incline direction and angle of inclination all same of 1111 inclined angle alpha.
The flexible PCB 131 of the LED lamp bar 13, substrate tape 14 and stiffening plate 15 extend to described two breach
In 121.The peak of the stiffening plate 15 in the breach 121 is maintained an equal level with the glue frame 12.Positioned at the breach 121
First bonding plane 141 of interior substrate tape 14 is pasted with the flexible PCB 131 in the breach 121, positioned at described
Second bonding plane 142 of the substrate tape 14 in breach 121 is pasted with the bottom surface of the breach 121.
Also be disposed with the light guide plate 11 diffusion sheet 16, lower brightening piece 17, on brightening piece 18.
In existing actual product, the size of the kink 1312 of the flexible PCB 131 be it is very little, also
It is that the kink 1312 is very little with the adhesion area on first inclined-plane 1111 by the substrate tape 14, described soft
Property circuit board 131 deformation resilience power in the presence of, 1312 corresponding substrate tape 14 of the kink is easily due to adhesion strength
The problem of Local warping is not enough produced, and then produces light leak.The glue frame 12 of the backlight module 10 that the present embodiment is provided is relative
Two sides are respectively provided with a breach 121, and the flexible PCB 131, substrate tape 14 and stiffening plate 15 extend to described
In two breach 121.Due to the setting of the breach 121 so that the flexible PCB 131 and substrate tape 14 can extend
To in the breach 121, the adhesion area of the substrate tape 14 is which increases, also just increase the substrate tape 14
Adhesion strength so that be not easy due to the substrate tape 14 in the presence of the deformation resilience power of the flexible PCB 131
Adhesion strength not enough produces Local warping problem, reduces the risk of light leak, improves the reliability of the backlight module.
Specific embodiment three
Refer to Fig. 7, there is provided a kind of display module, including the backlight module 10 in above-described embodiment, also including display surface
Plate 30, shading rubber belt 20, the backlight module 10 are pasted by the shading rubber belt 20 with the display floater 30 and are connected.Institute
State in the case that glue frame 12 is provided with gaps and omissions, the shading rubber belt 20 or the display floater 30 cover lacking for the glue frame 12
Mouthful.
Compared with prior art, Fig. 3 to Fig. 7, the flexible PCB 131 of the backlight module 10 of the display module be refer to
Kink 1312 be correspondingly arranged on stiffening plate 15, the stiffening plate 15 enhances the hard of 1512 region entirety of the kink
Degree so that the marginal area of the kink 1312 no longer easily produces fold, bubble or Local warping, is also greatly lowered
Thus produce the risk of light leak.So that the light distribution that the LED lamp bar 13 enters the flat board area 112 of the light guide plate 11 is equal
It is even, without the excessively bright phenomenon in local, so as to avoid by the 1312 marginal area fold of kink of flexible PCB 131, bubble or office
Portion's warpage and caused Lampyridea phenomenon.The size of the kink 1312 of the flexible PCB 131 be it is very little, that is,
The kink 1312 is very little with the adhesion area on first inclined-plane 1111 by the substrate tape 14, in the flexibility
In the presence of the deformation resilience power of circuit board 131,1312 corresponding substrate tape 14 of the kink easily due to adhesion strength not
Problem that is enough and producing Local warping, and then produce light leak.Two sides that the glue frame 12 of the backlight module 10 is relative set respectively
A breach 121 is put, the flexible PCB 131, substrate tape 14 and stiffening plate 15 extend to described two breach 121
It is interior.Due to the setting of the breach 121 so that the flexible PCB 131 and substrate tape 14 extend to the breach
In 121, the adhesion area of the substrate tape 14 is which increases, also just increases the adhesion strength of the substrate tape 14,
So that being not easy in the presence of the deformation resilience power of the flexible PCB 131 as the adhesion strength of the substrate tape 14 is inadequate
And Local warping problem is produced, the risk of light leak is reduced, the reliability of the backlight module is improve.Due to the breach
121 setting, at the same also cause the stiffening plate 15 extend in the breach 121, the peak of the stiffening plate 15 with
The glue frame 12 maintains an equal level, and the shading rubber belt 20 or the display floater 30 cover the breach 121 of the glue frame 12, so, institute
State display floater 30 and the shading rubber belt 20 has blocked the flexible PCB 131 and the stiffening plate 15 to leading away from described
The space of the direction resilience of 11 side of tabula rasa, that is to say, that the flexible PCB 131 and the stiffening plate 15 cannot resilience,
The problem that light leak is produced by 14 warpage of the substrate tape is thus completely avoid, the stability of display module is improve.
Although this utility model is disclosed as above with preferred embodiment, which is not for limiting this utility model, appointing
What those skilled in the art may be by the method and skill of the disclosure above in without departing from spirit and scope of the present utility model
Art content makes possible variation and modification to technical solutions of the utility model.Therefore, it is every without departing from this utility model technology
The content of scheme, any simple modification above example made according to technical spirit of the present utility model, equivalent variations and
Modification, belongs to the protection domain of technical solutions of the utility model.
Claims (11)
1. a kind of backlight module, it is characterised in that include：
Light guide plate, including wedge shaped area and flat board area, the wedge shaped area and the flat board area are integrally formed, and the wedge shaped area includes
One inclined-plane, the incident side of the light guide plate are located at the wedge shaped area；
Glue frame, is arranged around the light guide plate；
LED lamp bar, positioned at the incident side of the light guide plate, including flexible PCB and multiple LEDs, the flexible PCB bag
Include parallel portion and kink, the plurality of LED is disposed on the parallel portion of the flexible PCB, the bending part in
On first inclined-plane of the light guide plate；
Substrate tape, including the first bonding plane and the second bonding plane, first bonding plane is with the flexible PCB near institute
The side for stating LED is mutually pasted, and first inclined-plane and glue frame of second bonding plane and the light guide plate are mutually pasted；
It is characterized in that：
Also include stiffening plate, be arranged on side of the flexible PCB away from the LED, positioned at the flexible PCB
The corresponding region of kink.
2. backlight module as claimed in claim 1, it is characterised in that the hardness of the stiffening plate is more than the flexible PCB
Hardness.
3. backlight module as claimed in claim 1, it is characterised in that the stiffening plate is rectangle.
4. backlight module as claimed in claim 1, it is characterised in that the thickness of the stiffening plate is 0.1mm～0.3mm.
5. backlight module as claimed in claim 1, it is characterised in that two relative sides of the glue frame are respectively arranged with
Breach.
6. backlight module as claimed in claim 5, it is characterised in that the bottom surface of the breach and the light guide plate wedge shaped area
The angle of inclination on the first inclined-plane and incline direction all same.
7. backlight module as claimed in claim 5, it is characterised in that the flexible PCB of the LED lamp bar, substrate tape and
Stiffening plate is extended in described two breach.
8. backlight module as claimed in claim 5, it is characterised in that the peak of the stiffening plate in the breach
Maintain an equal level with the glue frame.
9. backlight module as claimed in claim 1, it is characterised in that be also disposed with the light guide plate diffusion sheet,
Lower brightening piece, upper brightening piece.
10. a kind of display module, including the backlight module as described in claim 1～8, it is characterised in that also including display surface
Plate, shading rubber belt, the backlight module are pasted by the shading rubber belt with the display floater and are connected.
11. display modules as claimed in claim 10, it is characterised in that the shading rubber belt or the display floater cover institute
State the breach of the glue frame of backlight module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621071533.XU CN206057755U (en) | 2016-09-22 | 2016-09-22 | Backlight module and display module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621071533.XU CN206057755U (en) | 2016-09-22 | 2016-09-22 | Backlight module and display module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206057755U true CN206057755U (en) | 2017-03-29 |
Family
ID=58366961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621071533.XU Active CN206057755U (en) | 2016-09-22 | 2016-09-22 | Backlight module and display module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206057755U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109541847A (en) * | 2018-12-21 | 2019-03-29 | 武汉华星光电技术有限公司 | Backlight module and display device |
| CN112524585A (en) * | 2019-09-17 | 2021-03-19 | 元太科技工业股份有限公司 | Waterproof light-emitting module |
| CN113440734A (en) * | 2021-06-30 | 2021-09-28 | 固安翌光科技有限公司 | Optical device for photodynamic therapy and method of making same |
| CN113721387A (en) * | 2021-08-27 | 2021-11-30 | 京东方科技集团股份有限公司 | Backlight module and display device |
-
2016
- 2016-09-22 CN CN201621071533.XU patent/CN206057755U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109541847A (en) * | 2018-12-21 | 2019-03-29 | 武汉华星光电技术有限公司 | Backlight module and display device |
| WO2020124891A1 (en) * | 2018-12-21 | 2020-06-25 | 武汉华星光电技术有限公司 | 1. backlight module and display device |
| US11175446B1 (en) | 2018-12-21 | 2021-11-16 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Backlight module and display device |
| CN112524585A (en) * | 2019-09-17 | 2021-03-19 | 元太科技工业股份有限公司 | Waterproof light-emitting module |
| TWI751708B (en) * | 2019-09-17 | 2022-01-01 | 元太科技工業股份有限公司 | Lighting module and display device |
| CN113440734A (en) * | 2021-06-30 | 2021-09-28 | 固安翌光科技有限公司 | Optical device for photodynamic therapy and method of making same |
| CN113440734B (en) * | 2021-06-30 | 2023-02-21 | 固安翌光科技有限公司 | Optical device for photodynamic therapy and method of making same |
| CN113721387A (en) * | 2021-08-27 | 2021-11-30 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN113721387B (en) * | 2021-08-27 | 2023-10-27 | 京东方科技集团股份有限公司 | Backlight module and display device |
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