CN208888540U - A kind of side entrance back module reducing reflection light loss - Google Patents
A kind of side entrance back module reducing reflection light loss Download PDFInfo
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- CN208888540U CN208888540U CN201821739062.4U CN201821739062U CN208888540U CN 208888540 U CN208888540 U CN 208888540U CN 201821739062 U CN201821739062 U CN 201821739062U CN 208888540 U CN208888540 U CN 208888540U
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- guide plate
- light guide
- light
- lamp bar
- glue
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Abstract
The utility model discloses a kind of side entrance back module for reducing reflection light loss, it include: glue frame supporting element, the light guide plate being fixed on the glue frame supporting element, the cob lamp bar for being fixed on the glue frame supporting element and being located at light guide plate incidence surface side, substratum transparent between the cob lamp bar and light guide plate and the light shield layer above the substratum transparent, the substratum transparent makes gapless between the cob lamp bar and light guide plate, and the light for issuing the cob lamp bar more enters in the light guide plate.The utility model is by being arranged substratum transparent between cob lamp bar light-emitting surface and light guide plate incidence surface, so that the air gap is not present between cob lamp bar light-emitting surface and light guide plate incidence surface, light to make cob lamp bar project enters light guide plate after substratum transparent, the total reflection and reflection of light can be reduced, light loss is reduced, increases the utilization rate of light and improves the brightness and the uniformity of backlight module.
Description
Technical field
The utility model relates to liquid panel technique field more particularly to a kind of side entrance backs for reducing reflection light loss
Mould group.
Background technique
Light loss is reduced, light efficiency is improved and improves the brightness of backlight module and the uniformity is the effort always of backlight industry
Emphasis.In industry, it is approximately linear light source, uniform in light emission because cob lamp bar has light, without lamp eye phenomenon and thickness is only 0.4-
The advantages that 0.7mm, suitable for popular narrow frame product design, and is widely used.In cob lamp bar, what LED chip issued
Light projects after the fluorescent powder in cob lamp bar.In backlight module, cob lamp bar is placed on the side of light guide plate, but by
There is gap between cob lamp bar and light guide plate, since the refractive index of fluorescent powder and light guide plate is 1.5 or so, and the folding of air
Penetrating rate is 1 or so, is to enter refractive index by the big medium of refractive index when the light that LED chip issues enters air through fluorescent powder
Small medium, there are the total reflections of part light, have nearly 20% light to be reflected back toward LED chip position, and by the light by air
When into light guide plate, since the refractive index of air and light guide plate is different, also there is part light that can lose, therefore cob lamp bar issues
There are biggish losses for light, not well into being utilized in light guide plate, influence the brightness of backlight module, reduce display product
Matter.
Therefore, the prior art is defective, needs to improve.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of side entering type back for reducing reflection light loss
Optical mode group.
The technical solution of the utility model is as follows: the utility model provides a kind of side entrance back for reducing reflection light loss
Mould group, comprising: glue frame supporting element, is fixed on the glue frame supporting element simultaneously the light guide plate being fixed on the glue frame supporting element
Cob lamp bar positioned at light guide plate incidence surface side, substratum transparent between the cob lamp bar and light guide plate and is set to
Light shield layer above the substratum transparent, the substratum transparent makes gapless between the cob lamp bar and light guide plate, and makes institute
The light for stating the sending of cob lamp bar more enters in the light guide plate.
Further, the cob lamp bar includes: PCB substrate, several LED chips in the PCB substrate and institute
State the connected FPC of PCB substrate, set on the LED chip two sides white size frame barricade and be filled in the white size frame barricade
Phosphor powder layer.
Further, the material of the substratum transparent is UV glue (light-sensitive emulsion), silica gel, polycarbonate resin or poly- methyl-prop
E pioic acid methyl ester resin.
Preferably, the material of the substratum transparent is UV glue.
Further, refractive index or light guide plate of the refractive index of the substratum transparent close or equal to the phosphor powder layer
Refractive index.
Further, the material of the light shield layer is shading glue, black ink or black PET (poly terephthalic acid second two
Alcohol ester).
Further, the cob lamp bar is fixed on glue frame supporting element side by the first double-sided adhesive and passes through second
Double-sided adhesive is fixed on glue frame supporting element bottom surface；The light guide plate is fixed on second double-sided adhesive by third double-sided adhesive
To which the light guide plate is fixed on glue frame supporting element bottom surface.
Further, first double-sided adhesive and third double-sided adhesive are white double-sided adhesive, and second double-sided adhesive is black
Double-sided adhesive.
Further, the backlight module further includes reflector plate, diffusion sheet, optical diaphragm assembly and shading glue.
Using the above scheme, the utility model is transparent by being arranged between cob lamp bar light-emitting surface and light guide plate incidence surface
Glue-line, so that the air gap is not present between cob lamp bar light-emitting surface and light guide plate incidence surface, thus the light for projecting cob lamp bar
After substratum transparent enter light guide plate, it is possible to reduce the total reflection and reflection of light, reduce light loss, increase light utilization rate and
Improve the brightness and the uniformity of backlight module.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Referring to Fig. 1, the utility model provides a kind of side entrance back module for reducing reflection light loss, comprising: glue frame
Supporting element 5, the light guide plate 2 being fixed on the glue frame supporting element 5 are fixed on the glue frame supporting element 5 and are located at described lead
The cob lamp bar 1 of 2 incidence surface side of tabula rasa, substratum transparent 3 between the cob lamp bar 1 and light guide plate 2 and is set to described
The light shield layer 4 of 3 top of substratum transparent, the substratum transparent 3 makes gapless between the cob lamp bar 1 and light guide plate 2, and makes
The light that the cob lamp bar 1 issues more enters in the light guide plate 2.The cob lamp bar 1 includes: PCB substrate 11, is set to institute
It states several LED chips 12 in PCB substrate 11, the FPC being connected with the PCB substrate 11 (not indicating), be set to the LED chip
The white size frame barricade 13 of 12 two sides and the phosphor powder layer 14 being filled in the white size frame barricade 13.
The refractive index of the substratum transparent 3 is close or equal to the refractive index of the phosphor powder layer 14 or the refraction of light guide plate 2
The material of substratum transparent 3 described in rate can be UV glue, silica gel, polycarbonate resin or plexiglass, preferably
For UV glue, refractive index is wanted to approach with the light guide plate 2, and the more smooth densification after photocuring of UV glue, is conducive to light transmission.
The material of the light shield layer 4 is shading glue, black ink or black PET, can prevent light leakage.
Please continue to refer to Fig. 1, in the present embodiment, the cob lamp bar 1 is fixed on described by first double-sided adhesive 6
5 bottom surface of glue frame supporting element is simultaneously fixed on by second double-sided adhesive 7 in 5 side of glue frame supporting element；The light guide plate 2 passes through
Third double-sided adhesive 8 is fixed on second double-sided adhesive 7 light guide plate 7 being fixed on 5 bottom surface of glue frame supporting element.
First double-sided adhesive 6 and third double-sided adhesive 8 are white double-sided adhesive, and second double-sided adhesive 7 is black double-sided glue, it is possible to reduce
The loss of light.This backlight module further include: reflector plate (not indicating), diffusion sheet (not indicating), optical diaphragm assembly (not indicating)
It (is not indicated) with shading glue.
In conclusion the utility model is by being arranged substratum transparent between cob lamp bar light-emitting surface and light guide plate incidence surface,
So that the air gap is not present between cob lamp bar light-emitting surface and light guide plate incidence surface, so that the light for projecting cob lamp bar is by saturating
Enter light guide plate after gelatin layer, it is possible to reduce the total reflection and reflection of light reduce light loss, increase the utilization rate of light and improve
The brightness and the uniformity of backlight module.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.
Claims (9)
1. a kind of side entrance back module for reducing reflection light loss characterized by comprising glue frame supporting element is fixed on institute
The light guide plate on glue frame supporting element is stated, is fixed on the glue frame supporting element and is located at the cob of light guide plate incidence surface side
Lamp bar, the substratum transparent between the cob lamp bar and light guide plate and the light shield layer above the substratum transparent, it is described
Substratum transparent makes gapless between the cob lamp bar and light guide plate, and the light for issuing the cob lamp bar more enters institute
It states in light guide plate.
2. the side entrance back module according to claim 1 for reducing reflection light loss, which is characterized in that the cob lamp
Item include: PCB substrate, several LED chips in the PCB substrate, the FPC being connected with the PCB substrate, be set to it is described
The white size frame barricade of LED chip two sides and the phosphor powder layer for being filled in the white size frame barricade.
3. the side entrance back module according to claim 1 or 2 for reducing reflection light loss, which is characterized in that described
The material of gelatin layer is UV glue, silica gel, polycarbonate resin or plexiglass.
4. the side entrance back module according to claim 3 for reducing reflection light loss, which is characterized in that the transparent adhesive tape
The material of layer is UV glue.
5. the side entrance back module according to claim 2 for reducing reflection light loss, which is characterized in that the transparent adhesive tape
The refractive index of layer is close or equal to the refractive index of the phosphor powder layer or the refractive index of light guide plate.
6. the side entrance back module according to claim 1 for reducing reflection light loss, which is characterized in that the light shield layer
Material be shading glue, black ink or black PET.
7. the side entrance back module according to claim 1 for reducing reflection light loss, which is characterized in that the cob lamp
Item is fixed on glue frame supporting element side by the first double-sided adhesive and is fixed on the glue frame supporting element by the second double-sided adhesive
Bottom surface；The light guide plate is fixed on second double-sided adhesive for the light guide plate to be fixed on described by third double-sided adhesive
Glue frame supporting element bottom surface.
8. the side entrance back module according to claim 7 for reducing reflection light loss, which is characterized in that described first pair
Face glue and third double-sided adhesive are white double-sided adhesive, and second double-sided adhesive is black double-sided glue.
9. the side entrance back module according to claim 1 for reducing reflection light loss, which is characterized in that the backlight mould
Group further includes reflector plate, diffusion sheet, optical diaphragm assembly and shading glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821739062.4U CN208888540U (en) | 2018-10-25 | 2018-10-25 | A kind of side entrance back module reducing reflection light loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821739062.4U CN208888540U (en) | 2018-10-25 | 2018-10-25 | A kind of side entrance back module reducing reflection light loss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208888540U true CN208888540U (en) | 2019-05-21 |
Family
ID=66517080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821739062.4U Active CN208888540U (en) | 2018-10-25 | 2018-10-25 | A kind of side entrance back module reducing reflection light loss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208888540U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110646975A (en) * | 2019-09-19 | 2020-01-03 | 深圳市隆利科技股份有限公司 | Backlight module and liquid crystal display device |
| CN113467150A (en) * | 2021-01-05 | 2021-10-01 | 青岛海信移动通信技术股份有限公司 | Display device |
-
2018
- 2018-10-25 CN CN201821739062.4U patent/CN208888540U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110646975A (en) * | 2019-09-19 | 2020-01-03 | 深圳市隆利科技股份有限公司 | Backlight module and liquid crystal display device |
| CN113467150A (en) * | 2021-01-05 | 2021-10-01 | 青岛海信移动通信技术股份有限公司 | Display device |
| CN113467150B (en) * | 2021-01-05 | 2024-06-07 | 青岛海信移动通信技术有限公司 | Display device |
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