CN103453390B - A kind of LCD TV, backlight module and preparation method thereof - Google Patents
A kind of LCD TV, backlight module and preparation method thereof Download PDFInfo
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- CN103453390B CN103453390B CN201210180544.1A CN201210180544A CN103453390B CN 103453390 B CN103453390 B CN 103453390B CN 201210180544 A CN201210180544 A CN 201210180544A CN 103453390 B CN103453390 B CN 103453390B
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- reflection chamber
- led lamp
- raised item
- lamp bar
- backlight module
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- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 claims description 12
- 230000002787 reinforcement Effects 0.000 claims description 8
- 239000003365 glass fiber Substances 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000005282 brightening Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The present invention discloses a kind of LCD TV, backlight module and preparation method thereof, the present invention is by arranging the raised item being pasted with silver-colored reflector plate in the bottom of reflection chamber, thus the light that LED lamp bar is sent maximized utilization in addition, backlight module can be made to send enough light with a small amount of LED lamp bar, greatly reduce cost, achieve the lightening of product, improve product competitiveness.
Description
Technical field
The present invention relates to field of liquid crystal display, particularly relate to a kind of LCD TV, backlight module and preparation method thereof.
Background technology
In prior art, no matter liquid crystal indicator (Liquid Crystal Display, LCD) is straight-down negative or side entering type, and the LED quantity in its backlight module is more, and need to use large-area reflector plate, its reason is: 1, the LED angle of divergence has limitation; 2, the setting of reflector plate not science, needs to use more reflector plate to realize the reflection of LED.This causes the backlight module cost of prior art liquid crystal indicator higher, and product competitiveness reduces greatly.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the object of the present invention is to provide the less LED of a kind of use, and the LCD TV, backlight module and preparation method thereof of few reflector plate, be intended to solve the problem that existing backlight module light source utilization ratio is low, cost is higher.
Technical scheme of the present invention is as follows:
A kind of backlight module, wherein, comprising:
One reflection chamber, is surrounded by four sidewalls and bottom, and the material of described four sidewalls and bottom is the Merlon containing 10% glass fibre;
Be arranged on the diffuser plate at described reflection chamber top;
Be arranged on the raised item that LED lamp bar bottom described reflection chamber and a side are pasted with silver-colored reflector plate;
Described raised item is arranged at the centre position bottom reflection chamber, and described LED lamp bar is symmetricly set on the centre position bottom the reflection chamber of described raised item both sides;
Described LED lamp bar and raised item be arranged in parallel, and bottom described raised item side and reflection chamber, angle is identical with angle bottom described reflection chamber sidewall and reflection chamber.
Described backlight module, wherein, it is leg-of-mutton rib body that described raised item is arranged to cross section, and the width bottom described raised item is 1/5th of reflection chamber bottom width.
Described backlight module, wherein, described raised item height is 3/4ths of reflection chamber height.
Described backlight module, wherein, bottom described raised item side and reflection chamber, angle is 135 degree.
Described backlight module, wherein, the material of described four sidewalls and bottom is AU5100 Merlon.
Described backlight module, wherein, is provided with reinforcement bottom described reflection chamber.
Described backlight module, wherein, described LED lamp bar is arranged on LED lamp bar pcb board, and the bottom of reflection chamber is provided with the groove for placing LED lamp bar pcb board.
Described backlight module, wherein, the groove bottom described reflection chamber is provided with louvre.
A kind of LCD TV, comprise a backlight module and fore shell, described fore shell is fastened on described backlight module, wherein: described backlight module is set to described backlight module.
A preparation method for backlight module, wherein, comprises step:
Surround a reflection chamber by four sidewalls and bottom, the material of described reflection chamber is the Merlon containing 10% glass fibre;
At described reflection chamber top, diffuser plate is set;
The raised item that LED lamp bar and a side are pasted with silver-colored reflector plate is set bottom described reflection chamber;
Described raised item is arranged at the centre position bottom reflection chamber, and described LED lamp bar is symmetricly set on the centre position bottom the reflection chamber of described raised item both sides;
Described LED lamp bar and raised item be arranged in parallel, and described raised item side is identical with angle bottom angle bottom reflection chamber and described reflection chamber sidewall and reflection chamber.
Beneficial effect: LCD TV of the present invention, backlight module and preparation method thereof, reflection chamber is adopted to replace traditional reflector plate and iron backboard, centre position only bottom reflection chamber arranges one for the raised item of reflection ray, and the centre position bottom the reflection chamber of raised item both sides arranges LED lamp bar, also LED lamp bar and raised item are be arranged in parallel, and angle bottom raised item side and reflection chamber is set to identical with angle bottom described reflection chamber sidewall and reflection chamber, reach and only need attach silver-colored reflector plate in the side of raised item, the uniform light of the enough brightness of backlight module outgoing can be made, this is designed with to be beneficial to and improves light reflection efficiency, decrease the use of LED, to reduce the cost of device while ensureing light quality, play the light efficiency of LED lamp bar in maximum efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of backlight module preferred embodiment of the present invention.
The plan structure schematic diagram that Fig. 2 is backlight module shown in Fig. 1.
Fig. 3 removes raised item and LED lamp bar for backlight module shown in Fig. 1 and arranges the plan structure schematic diagram after reinforcement.
Fig. 4 is the partial enlarged drawing of part A in Fig. 1.
Detailed description of the invention
The invention provides a kind of LCD TV, backlight module and preparation method thereof, for making object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
LCD TV of the present invention, backlight module and preparation method thereof, by the centre position of the bottom at reflection chamber, the raised item being pasted with silver-colored reflector plate is set, the light that LED lamp bar is sent is except directly entering except diffuser plate, the reflection that all the other light can be passed through silver-colored reflector plate enters diffuser plate, LED lamp bar luminous efficiency is improved greatly, reaches and backlight module can be made to provide the light of enough brightness with normal show image without the need to a large amount of LED lamp bar.
As shown in Figure 1, Fig. 1 is the structural representation of backlight module preferred embodiment of the present invention, this backlight module comprises: a reflection chamber 100, and this reflection chamber 100 is surrounded by four sidewalls 160 and bottom 150, and the material of these four sidewalls 160 and bottom 150 is the Merlon containing 10% glass fibre; Be arranged on the diffuser plate 130 at described reflection chamber 100 top; Be arranged on raised item 110 and the LED lamp bar 120 of bottom described reflection chamber 100 150, this raised item 110 has the side that two are pasted with silver-colored reflector plate; Described raised item 110 is arranged on the centre position of bottom reflection chamber 100 150, bottom the reflection chamber 100 that described LED lamp bar 120 is symmetricly set on described raised item 110 both sides 150 centre position; Described LED lamp bar 120 and raised item 110 be arranged in parallel, and bottom described raised item 110 side and reflection chamber 100,150 angles are identical with 150 angles bottom described reflection chamber 100 sidewall 160 and reflection chamber 100.The centre position of the present invention only bottom reflection chamber 100 arranges one for the raised item 110 of reflection ray, and the centre position bottom the reflection chamber 100 of raised item 110 both sides arranges LED lamp bar 120, also LED lamp bar 120 and raised item 110 are be arranged in parallel, and 150 angles bottom raised item 110 side and reflection chamber 100 are set to identical with 150 angles bottom described reflection chamber 100 sidewall 160 and reflection chamber 100, reach and only need attach silver-colored reflector plate in the side of raised item 110, the uniform light of the enough brightness of backlight module outgoing can be made, this is designed with to be beneficial to and improves light reflection efficiency, decrease the use of LED, to reduce the cost of device while ensureing light quality.
A part of light that described LED lamp bar 120 sends directly enters diffuser plate 130, part light enters diffuser plate 130 through the silver-colored reflectors reflects of reflection chamber 100 and raised item 110, due to raised item 110 side and and reflection chamber 100 bottom 150 angles identical with 150 angles bottom described reflection chamber 100 sidewall 160 and reflection chamber 100, therefore distribution of light on diffuser plate 130 is more even; Meanwhile, owing to being provided with this raised item 110, make light overlapping region 140 on diffuser plate 130 comparatively large, bright and clear in the middle part of diffuser plate 130.
Shown in composition graphs 2, Fig. 2 is the plan structure schematic diagram that the present invention shows module, the bottom 150 of this reflection chamber 100 is provided with raised item 110 and LED lamp bar 120, four sidewalls 160 and bottom 150 and jointly defines this reflection chamber 100.
In a preferred embodiment of the invention, described raised item 110 is set to triangular prism structure, namely raised item 110 is arranged to cross section is leg-of-mutton rib body, so, the light that LED lamp bar 120 sends is after the silver-colored reflectors reflects of the raised item 110 of triangular prism structure, light is substantially all concentrated on the middle part of diffuser plate 130, utilize reverberation with maximal efficiency.Comparatively it is suitable that, width bottom described raised item 110 is about 1/5th of reflection chamber 100 bottom width, facts have proved, raised item 110 reflection efficiency of this width is the highest, and by the middle part reflexing to diffuser plate 130 more for light, thus the use amount of LED lamp bar can be reduced.In a preferred embodiment of the invention, the length of raised item 110 can be set to identical with reflection chamber 100 bottom lengths, namely the two ends of raised item 110 are connected to bottom reflection chamber 100, and the bottom thickness of reflection chamber 100 meets >=2mm and≤4mm, also can the supported hole being used for support protrusion bar 110 be set in the bottom of reflection chamber 100.
Further, the height of described raised item 110 is 3/4ths of reflection chamber 100 height, diffuser plate 130 is reflexed to light LED lamp bar sent as much as possible, be unlikely to again because this raised item 110 is too high and contact with the top of reflection chamber 100, the both sides that reflection chamber 100 is split by raised item are completely closed, cause LED lamp bar reflection efficiency to reduce.Reflection chamber height in the present invention in embodiment and the light mixing distance of reflection chamber are 18 ~ 38mm, the top rounding of described raised item, and fillet diameter meets >=4mm and≤8mm.
Further, described raised item 110 is arranged to the rib body that cross section is isosceles triangle, and namely two sides of raised item 110 are identical with the bottom angle of reflection chamber 100, with the brightness everywhere of balanced diffuser plate.Comparatively it is suitable that, the side of raised item 100 with become 135 degree of angles bottom reflection chamber, so, the reflecting effect of raised item 100 is best, and in the middle part of diffuser plate 130, light lap is more, LED lamp bar 120 luminous efficiency can be maximized.The left and right sides on described raised item 110 has attached silver-colored reflector plate, the area of silver reflector plate can calculate according to geometrical relationship, such as, suppose that the side length of raised item 110 is bmm, and the width of raised item 110 side is a/5mm, the area of the silver-colored reflector plate now on raised item 110 side is 2ab/5mm
2existing backlight module is in order to provide the light of enough brightness to need to arrange a large amount of LED lamp bar and needs arrange a large amount of reflector plate at the sidewall of backlight module and backboard place, the silver-colored reflector plate area that silver-colored reflector plate area in the present invention compares the use of existing backlight module reduces greatly, thus reduces cost of the present invention.
Described LED lamp bar 120 is the LED lamp bar of band lens, LED lamp bar with lens is with space angle bright dipping, its light major part of launching directly enters diffuser plate 130, another part light incides on the sidewall 160 of reflection chamber 100 and the raised item 110 of the silver-colored reflector plate of band, and the reflection through reflection chamber 100 and silver-colored reflector plate enters diffuser plate 130.The LED lamp bar of the described band lens light-emitting directions in space angle ± 80 degree, thus lighting angle is large, can save a large amount of light source, realize the lightening of backlight module and cost degradation.And the two ends of the LED lamp bar of these band lens are connected to the two ends of the length direction bottom reflection chamber, namely the length of the LED lamp bar of described band lens is identical with reflection chamber bottom lengths, be a strip light source, make the light of backlight module outgoing of the present invention more even.
Further, the LED lamp bar of two band lens is set bottom described reflection chamber 100, respectively the LED lamp bar of two band lens can be arranged on the right and left of raised item 110, such light will be more balanced, the right and left is there will not be to cross bright while excessively dark situation, and the reflex of two the silver-colored reflector plates in left and right of raised item 110 can be made full use of, the light of the right and left is all reflexed to diffuser plate.Comparatively it is suitable that, the LED lamp bar of described band lens is arranged on 1/5th places from reflection chamber 100 end, the LED lamp bar limit of these belt transect lens is in the centre of end bottom reflection chamber 100 and raised item 110, facts have proved, LED lamp bar with lens can in maximum efficiency by light emission to silver-colored reflector plate, to reduce the use of reflector plate, and outgoing is more even to the light of diffuser plate, diffuser plate there will not be bright spot or dim spot everywhere, simultaneously, light overlapping region 140 on diffuser plate 130 is comparatively large, bright and clear in the middle part of diffuser plate 130.
Further, the sidewall 160 of described reflection chamber 100 is set to and 150 one-tenth 135 degree of angles bottom reflection chamber 100, namely the angle between four sidewalls 160 of reflection chamber 100 and the bottom 150 of reflection chamber 100 is 135 degree, so, LED lamp bar 120 can be utilized in maximum efficiency, the light sent because of LED lamp bar 120 also can enter into reflecting plate 130 by the reflection of sidewall 160, so the angle of inclination of sidewall 160 also seems particularly important, be proven, the angle of 135 degree is preferably embodiment, its light reflectance is high, and reflecting effect is good.
Further, the bottom of described reflection chamber and the material of side are AU5100 Merlon.The bottom of the reflection chamber in the present invention and side can adopt the PC(Merlon of high reflectance) material add 10% glass fibre, such as adopt high reverse--bias PC raw material A U5100 Merlon, this material has high reverse--bias high resistance light effect, and it belongs to PC+TiO
2pC modified feedstock, be suitable for as making the material of reflection chamber of the present invention.
Shown in composition graphs 3, Fig. 3 is the plan structure schematic diagram after backlight module of the present invention removes raised item and LED lamp bar, and bottom described reflection chamber 100,150 are provided with reinforcement 170.Comparatively it is suitable that, bottom described reflection chamber 100, the transverse direction of 150 and the centre position of longitudinal direction are provided with reinforcement 170, and it can strengthen fastness and the stability of bottom reflection chamber 100 150 further, make reflection chamber 100 not fragile.The width of described reinforcement 170 is best >=5mm and≤10mm, and the thickness of reinforcement 170 is best >=1mm and≤3mm, so, the fixed effect of reinforcement 170 is best, and can not affect the overall performance of backlight module.
Further, described LED lamp bar 120 is arranged on LED lamp bar pcb board, groove for placing LED lamp bar pcb board is provided with (because of visual angle relation in the bottom 150 of described reflection chamber 100, groove does not illustrate in the drawings), be preferably, the degree of depth of groove and the consistency of thickness of LED lamp bar pcb board, depth of groove specifically can be set to 1mm, and the width of groove exceedes LED lamp bar pcb board width 1mm.For high-power LED lamp bar, bottom described reflection chamber 100, louvre 180 can be provided with in 150 positions corresponding with LED lamp bar 120, thus the heat that LED lamp bar 120 produces is distributed in time, be unlikely to make the temperature of reflection chamber 100 too high.
Shown in composition graphs 4, brightening piece 210, reflective polarizer blast sheet 220(DBEF is provided with successively above described diffuser plate 130) and liquid-crystalline glasses 230, after light enters into diffuser plate 130, brightening piece 210 is entered into through the refraction of diffuser plate 130 and scattering, brightening piece 210 reflects the light entered, after optically focused, light enters into reflective polarizer blast sheet 220, by reflective polarizer blast sheet 220, the light entered is reflected, polarization, refraction, finally enter into liquid-crystalline glasses 230, and show.
Based on above-mentioned backlight module, the invention allows for a kind of LCD TV of low cost, comprise backlight module and fore shell, described fore shell is fastened on described backlight module, and wherein, described backlight module is set to the backlight module according to any one of above-described embodiment.When assembling LCD TV, by the LED lamp bar device of band lens on groove, more silver-colored reflector plate can be attached on middle raised item, and successively by good to diffuser plate, brightening piece, DBEF and liquid-crystalline glasses group, finally fore shell be fastened on backlight module.
In addition, present invention also offers a kind of preparation method of backlight module, it comprises step:
Surround a reflection chamber by four sidewalls and bottom, the material of described reflection chamber is the Merlon containing 10% glass fibre;
At described reflection chamber top, diffuser plate is set;
The raised item that LED lamp bar and a side are pasted with silver-colored reflector plate is set bottom described reflection chamber;
Described raised item is arranged at the centre position bottom reflection chamber, and described LED lamp bar is symmetricly set on the centre position bottom the reflection chamber of described raised item both sides;
Described LED lamp bar and raised item be arranged in parallel, and described raised item side is identical with angle bottom angle bottom reflection chamber and described reflection chamber sidewall and reflection chamber.
Compared with backlight module of the prior art and LCD TV, the present invention instead of traditional reflector plate and iron backboard owing to utilizing reflection chamber, centre position only bottom reflection chamber arranges one for the raised item of reflection ray, and the centre position bottom the reflection chamber of raised item both sides arranges LED lamp bar, also LED lamp bar and raised item are be arranged in parallel, and angle bottom raised item side and reflection chamber is set to identical with angle bottom described reflection chamber sidewall and reflection chamber, reach and only need attach silver-colored reflector plate in the side of raised item, the uniform light of the enough brightness of backlight module outgoing can be made, this is designed with to be beneficial to and improves light reflection efficiency, decrease the use of LED, to reduce the cost of device while ensureing light quality, play the light efficiency of LED lamp bar in maximum efficiency, greatly reduce cost, achieve the lightening of product, improve product competitiveness.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (8)
1. a backlight module, is characterized in that, comprising:
One reflection chamber, is surrounded by four sidewalls and bottom, and the material of described four sidewalls and bottom is the Merlon containing 10% glass fibre;
Be arranged on the diffuser plate at described reflection chamber top;
Be arranged on the raised item that LED lamp bar bottom described reflection chamber and a side are pasted with silver-colored reflector plate;
Described raised item is arranged at the centre position bottom reflection chamber, and described LED lamp bar is symmetricly set on the centre position bottom the reflection chamber of described raised item both sides;
Described LED lamp bar and raised item be arranged in parallel, and bottom described raised item side and reflection chamber, angle is identical with angle bottom described reflection chamber sidewall and reflection chamber;
It is leg-of-mutton rib body that described raised item is arranged to cross section, and the width bottom described raised item is 1/5th of reflection chamber bottom width; The cross section of described rib body is isosceles triangle;
Described raised item height is 3/4ths of reflection chamber height;
Described LED lamp bar is the LED lamp bar of band lens, the LED lamp bar of the described band lens light-emitting directions in space angle ± 80 degree.
2. backlight module according to claim 1, is characterized in that, bottom described raised item side and reflection chamber, angle is 135 degree.
3. backlight module according to claim 1, is characterized in that, the material of described four sidewalls and bottom is AU5100 Merlon.
4. backlight module according to claim 1, is characterized in that, is provided with reinforcement bottom described reflection chamber.
5. backlight module according to claim 1, is characterized in that, described LED lamp bar is arranged on LED lamp bar pcb board, and the bottom of reflection chamber is provided with the groove for placing LED lamp bar pcb board.
6. backlight module according to claim 5, is characterized in that, the groove bottom described reflection chamber is provided with louvre.
7. a LCD TV, comprises a backlight module and fore shell, and described fore shell is fastened on described backlight module, it is characterized in that: described backlight module is set to the backlight module according to any one of claim 1 to 6.
8. a preparation method for backlight module, is characterized in that, comprises step:
Surround a reflection chamber by four sidewalls and bottom, the material of described reflection chamber is the Merlon containing 10% glass fibre;
At described reflection chamber top, diffuser plate is set;
The raised item that LED lamp bar and a side are pasted with silver-colored reflector plate is set bottom described reflection chamber;
Described raised item is arranged at the centre position bottom reflection chamber, and described LED lamp bar is symmetricly set on the centre position bottom the reflection chamber of described raised item both sides;
Described LED lamp bar and raised item be arranged in parallel, and described raised item side is identical with angle bottom angle bottom reflection chamber and described reflection chamber sidewall and reflection chamber;
It is leg-of-mutton rib body that described raised item is arranged to cross section, and the width bottom described raised item is 1/5th of reflection chamber bottom width; The cross section of described rib body is isosceles triangle;
Described raised item height is 3/4ths of reflection chamber height;
Described LED lamp bar is the LED lamp bar of band lens, the LED lamp bar of the described band lens light-emitting directions in space angle ± 80 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210180544.1A CN103453390B (en) | 2012-06-04 | 2012-06-04 | A kind of LCD TV, backlight module and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210180544.1A CN103453390B (en) | 2012-06-04 | 2012-06-04 | A kind of LCD TV, backlight module and preparation method thereof |
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| Publication Number | Publication Date |
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| CN103453390A CN103453390A (en) | 2013-12-18 |
| CN103453390B true CN103453390B (en) | 2015-10-21 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333334A (en) * | 2015-11-16 | 2016-02-17 | 合一智能科技（深圳）有限公司 | LED light bar and liquid crystal display module |
| CN106855664A (en) * | 2015-12-09 | 2017-06-16 | 天津三星电子有限公司 | A kind of LCDs |
| CN107949215B (en) * | 2017-12-19 | 2023-12-29 | 惠科股份有限公司 | Display device and to the process for preparing the same Shell structure |
| CN109036116A (en) * | 2018-06-21 | 2018-12-18 | 深圳创维－Rgb电子有限公司 | A kind of reflection cavity, backlight module and display |
| CN113189817A (en) * | 2021-05-31 | 2021-07-30 | 广东长虹电子有限公司 | Direct type backlight module and liquid crystal display television |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1317591C (en) * | 2003-11-05 | 2007-05-23 | 友达光电股份有限公司 | Direct Type Backlight Assembly |
| KR20060081824A (en) * | 2005-01-10 | 2006-07-13 | 삼성전자주식회사 | Back light assembly and display device having same |
| CN201439912U (en) * | 2009-08-14 | 2010-04-21 | 北京京东方光电科技有限公司 | Direct-type backlight device |
| MX2012013189A (en) * | 2010-05-25 | 2012-12-17 | Sharp Kk | Illuminating device, display device, and television receiver. |
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Granted publication date: 20151021 Termination date: 20170604 |