CN104501029B - LED backlight module and eliminate the method for its bright band lamp bead, liquid crystal display - Google Patents
LED backlight module and eliminate the method for its bright band lamp bead, liquid crystal display Download PDFInfo
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- CN104501029B CN104501029B CN201410664757.0A CN201410664757A CN104501029B CN 104501029 B CN104501029 B CN 104501029B CN 201410664757 A CN201410664757 A CN 201410664757A CN 104501029 B CN104501029 B CN 104501029B
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- Prior art keywords
- led
- led light
- light bar
- backlight module
- lamp bead
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
Abstract
The invention discloses a kind of LED backlight module and the method for its bright band lamp bead, liquid crystal display are eliminated, the LED backlight module includes：The a plurality of LED light bar rearranged by plurality of LEDs lamp bead, the light guide plate being placed on above a plurality of LED light bar；Light guide plate is just provided with reflector plate towards on the face of LED light bar to the position of every LED light bar, and the reflector plate is just being punched to the position between the adjacent two LEDs lamp bead of every LED light bar.This backlight module of the present invention eliminates bright band, lamp bead phenomenon while can realizing ultrathin backlight, it is ensured that the brightness uniformity and image quality of ultrathin LED backlight module.
Description
Technical field
The present invention relates to the back light model setting technology field of liquid crystal display, and in particular to a kind of LED backlight module and elimination
The method of its bright band lamp bead, liquid crystal display.
Background technology
LED liquid crystal television in the market is broadly divided into two kinds of side type and straight-down negative.Outside side type LED liquid crystal television
Frivolous fashion is seen, cost is relatively low, but light efficiency is relatively low, and brightness uniformity is poor, it is impossible to realize region local dimming technology；Straight-down negative
LED liquid crystal television light efficiency is high, and brightness uniformity is good, and region local dimming technology can be achieved, but thickness is thicker, and cost is higher,
It is also easy to produce halation between block.Hybrid backlight module then has both advantages concurrently.A kind of 1 existing LED backlight module bag
Include：Light guide plate and front light-emitting type LED, light guide plate are covered on LED light bar surface, then put meeting after diffuser plate and diaphragm
There is lamp bead and bright band phenomenon.Fig. 1 is generation bright band and the simulation drawing of lamp bead phenomenon in LED backlight module, referring to Fig. 1, in Fig. 1
In can significantly see several bright bands occurred in picture.Because the light mixing distance of LED in hybrid backlight module is not enough,
If increasing LED light mixing distance, the thickness of backlight will be increased, it is impossible to realize ultrathin backlight.Further, since two LED light bars
Between have certain distance, the local shinny formation bright band for having LED, the local dark influence image quality without LED light bar；Cause
This, needs a kind of scheme for the bright band and lamp bead phenomenon for solving mixed LED backlight module badly.
The content of the invention
The invention provides a kind of LED backlight module and the method for its bright band lamp bead is eliminated to solve mixed LED backlight
The bright band and lamp bead phenomenon of module, improve the brightness uniformity and image quality of hybrid backlight module.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
According to an aspect of the invention, there is provided a kind of LED backlight module：The LED backlight module includes：By many
A plurality of LED light bar that LED lamp bead is rearranged, the light guide plate being placed on above a plurality of LED light bar；
Light guide plate to the position of every LED light bar towards being just provided with reflector plate on the face of LED light bar, and on reflector plate
Just the position between the adjacent two LEDs lamp bead of every LED light bar is punched.
Alternatively, a plurality of LED light bar between any two it is arranged in parallel set, and between adjacent two LED light bars away from
From equal.
Alternatively, in light guide plate towards being just provided with and LED light bar pair to the position of every LED light bar on the face of LED light bar
The groove answered；
Reflector plate is strip；
Strip reflector plate is attached on the groove of light guide plate.
Alternatively, just to beating multiple holes between the adjacent two LEDs lamp bead of every LED light bar on reflector plate.
Alternatively, a diameter of 1~2 millimeter of each hole on reflector plate.
There is provided a kind of LED backlight module comprising described in one aspect of the invention according to another aspect of the present invention
Liquid crystal display.
According to a further aspect of the invention there is provided a kind of method for eliminating LED backlight module bright band and lamp bead phenomenon,
This method includes：
Light guide plate is placed in the top of a plurality of LED light bar rearranged by plurality of LEDs lamp bead；
In light guide plate towards on the face of LED light bar, reflector plate just is set to the position of every LED light bar, and in reflector plate
Just the position between the adjacent two LEDs lamp bead of every LED light bar is punched.
Alternatively, this method also includes：In light guide plate towards just being set to the position of every LED light bar on the face of LED light bar
Put groove corresponding with the LED light bar；
Reflector plate is set to strip；
Strip reflector plate is attached on the groove of light guide plate.
Alternatively, this method includes：Just to beating many between the adjacent two LEDs lamp bead of every LED light bar on reflector plate
Individual hole.
Alternatively, a diameter of 1~2 millimeter of each hole on reflector plate.
This backlight module of the present invention, by setting reflector plate and in reflection towards the position of LED light bar in light guide plate
Punched on piece, can effectively solve the problem that the bright band and lamp bead phenomenon of mixed LED backlight module, lift mixed LED backlight module
Image quality；Meanwhile, the program will not increase the thickness of mixed LED backlight module, realize ultrathin backlight.
Brief description of the drawings
Fig. 1 is generation bright band and the simulation drawing of lamp bead phenomenon in LED backlight module；
Fig. 2 is a kind of LED backlight module schematic diagram that the present invention is provided；
Fig. 3 is a kind of structural representation for punching reflector plate that one embodiment of the invention is provided.
Embodiment
The present invention core concept be：To the improvement of mixed LED backlight module on the basis of hybrid backlight module,
Specifically in the case where not increasing mixed LED backlight module thickness, solve bright band that mixed LED backlight module produces and
Lamp bead phenomenon.Hybrid backlight then has the advantage of side entering type and down straight aphototropism mode set concurrently, for example：More preferable brightness uniformity；
High brightness, high-contrast；Low-power consumption, low-carbon environment-friendly；The technologies such as 3D dynamic scans, local dimming can be achieved；The present invention's is this
While LED backlight module be ensure that with above-mentioned hybrid backlight module advantage, further solve influence its thickness and
The bright band and lamp bead phenomenon of image quality.
Fig. 2 is a kind of LED backlight module schematic diagram that the present invention is provided, referring to Fig. 2, this LED backlight mould of the invention
Group includes：The a plurality of LED light bar 201 rearranged by plurality of LEDs lamp bead, the light guide plate being placed on above a plurality of LED light bar
202；
Light guide plate 202 towards being just provided with reflector plate 203 to the position of every LED light bar 201 on the face of LED light bar 201,
And just to the position punching 2031 between the adjacent two LEDs lamp bead of every LED light bar on reflector plate 203.
In this LED backlight module that the present embodiment is provided, the light that LED is sent, will be bright by punching reflector plate
The most of light in the high position (i.e. the position of lamp bead and bright band) of degree is reflexed in the cavity that light guide plate is formed with LED light bar, this
The high position of sample brightness has seldom light to project, and weakens and even eliminates bright band phenomenon；The position shaded simultaneously between LED
Put and reflector plate is punched so that position has substantial amounts of light to project between LED, so that shaded between reinforcement LED lamp bead
Region, increases light mixing distance, eliminates lamp bead phenomenon.
In the present embodiment, in light guide plate towards being just provided with and LED to the position of every LED light bar on the face of LED light bar
The corresponding groove of bar；Reflector plate is strip；Strip reflector plate is attached on the groove of light guide plate.A plurality of LED light bar is between any two
It is arranged in parallel to set, and the distance between adjacent two LED light bars are equal so that the intensity distribution of LED lamplight tends to uniform.Figure
3 simply schematically depict a LED light bar 201 and a reflector plate 203, in actual applications, it will be understood that LED is carried on the back
Optical mode group should include installing a plurality of reflector plate 203 on a plurality of LED light bar 201, light guide plate 202.In addition, reflector plate 203 is installed
The position that dotted line is illustrated on light guide plate 202, just to LED light bar 201.
Fig. 3 is a kind of structural representation for punching reflector plate that one embodiment of the invention is provided, referring to Fig. 3, the reflection
Piece 203 is strip, the reflector plate 203 of the strip is attached into light guide plate towards in the groove on the face of LED light bar, reflector plate
Hole 2031 is equipped with 203, the quantity in (referring to the enlarged fragmentary portion of reflector plate 203) hole be it is multiple, each hole a diameter of 1~
2 millimeters.Referring to Fig. 3, the structure of reflector plate 203 can be divided into two parts, and a part is the position hair high for reflecting LED luminance
The non-perforated part of the light gone out, another part is then to have more light to penetrate part dark between two LED lamps
The part for going out and being punched on sheet emitting, this two parts play a role jointly, LED can be carried out compared with the light of bright part appropriate
Weaken, and to carrying out reinforcement compared with dark-part so as to eliminate the bright band and lamp bead phenomenon of mixed LED backlight module, it is ensured that
The image quality of LED backlight module.
In the present embodiment, light guide plate is shaped as rectangle, in other embodiments of the invention, can select other
The light guide plate of shape, for example：Triangle, trapezoidal and square.In addition, the material of reflector plate is polyester resin (Polythylene
Terephthalate, abbreviation PET).
To sum up, this mixed LED backlight module of the invention can realize ultrathin backlight, while solving super in realization
The problem of bright band and lamp bead influence image quality being likely to occur during thin backlight so that the backlight module has ultra-thin while
Higher brightness uniformity and image quality.
Present invention also offers a kind of liquid crystal display for including above-mentioned backlight module, because the backlight module can be designed
It is very thin and ensure image quality simultaneously, therefore, preferably image quality can also be had by employing the liquid crystal display of the backlight module
Possess lower power consumption while performance, it is also more environmentally-friendly.
In addition, present invention also offers a kind of method for eliminating LED backlight module bright band and lamp bead phenomenon, this method bag
Include：
Light guide plate is placed in the top of a plurality of LED light bar rearranged by plurality of LEDs lamp bead；
In light guide plate towards on the face of LED light bar, reflector plate just is set to the position of every LED light bar, and in reflector plate
Just the position between the adjacent two LEDs lamp bead of every LED light bar is punched.
Wherein, this method also includes：In light guide plate towards just being set to the position of every LED light bar on the face of LED light bar
Groove corresponding with the LED light bar；Reflector plate is set to strip；Strip reflector plate is attached on the groove of light guide plate.
Wherein, this method includes：Just to beating multiple between the adjacent two LEDs lamp bead of every LED light bar on reflector plate
Hole.Wherein, a diameter of 1~2 millimeter of each hole.
It should be noted that the method for this elimination mixed LED backlight module bright band and lamp bead phenomenon of the present invention, is
It is corresponding with backlight module described above, thus, the method for the elimination mixed LED backlight module bright band and lamp bead phenomenon
Implementation process may refer to foregoing mixed LED backlight module course of work part explanation, will not be repeated here.
In summary, this mixed LED backlight module of the invention can ensure bright while ultrathin design is realized
The uniformity and image quality of degree；And the low-power consumption that has with mixed LED backlight module, low-carbon environment-friendly can realize that 3D is moved
The advantages of state scanning, local dimming.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (10)
1. a kind of LED backlight module, it is characterised in that the LED backlight module includes：By plurality of LEDs lamp bead rearrange it is many
Bar LED light bar, the light guide plate being placed on above a plurality of LED light bar；
The light guide plate towards being just provided with reflector plate on the face of the LED light bar to the position of LED light bar every described, and
Just the position between the adjacent two LEDs lamp bead of LED light bar every described is punched on the reflector plate, the reflector plate is bar
Shape.
2. LED backlight module as claimed in claim 1, it is characterised in that in the light guide plate towards the face of the LED light bar
On groove corresponding with the LED light bar just is provided with to the position of LED light bar every described；
Strip reflector plate is attached on the groove of the light guide plate.
3. LED backlight module as claimed in claim 1 or 2, it is characterised in that a plurality of LED light bar is parallel between any two
Spread configuration, and the distance between adjacent two LED light bars are equal.
4. LED backlight module as claimed in claim 1 or 2, it is characterised in that just to described in every on the reflector plate
Multiple holes are beaten between the adjacent two LEDs lamp bead of LED light bar.
5. LED backlight module as claimed in claim 1 or 2, it is characterised in that a diameter of the 1 of each hole on the reflector plate
~2 millimeters.
6. a kind of liquid crystal display, it is characterised in that the liquid crystal display includes：As any one of claim 1-5
LED backlight module.
7. a kind of method for eliminating LED backlight module bright band and lamp bead phenomenon, it is characterised in that this method includes：
Light guide plate is placed in the top of a plurality of LED light bar rearranged by plurality of LEDs lamp bead；
In the light guide plate towards on the face of the LED light bar, reflector plate just is set to the position of every LED light bar, and
Just the position between the adjacent two LEDs lamp bead of LED light bar every described is punched in reflector plate, the reflector plate is set to bar
Shape.
8. method as claimed in claim 7, it is characterised in that this method also includes：In the light guide plate towards the LED
Groove corresponding with the LED light bar just is set to the position of LED light bar every described on the face of bar；
On the groove that strip reflector plate is attached to the light guide plate.
9. method as claimed in claim 7 or 8, it is characterised in that this method includes：Just to every institute on the reflector plate
Multiple holes are beaten between the adjacent two LEDs lamp bead for stating LED light bar.
10. method as claimed in claim 9, it is characterised in that a diameter of 1~2 millimeter of each hole on the reflector plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410664757.0A CN104501029B (en) | 2014-11-19 | 2014-11-19 | LED backlight module and eliminate the method for its bright band lamp bead, liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410664757.0A CN104501029B (en) | 2014-11-19 | 2014-11-19 | LED backlight module and eliminate the method for its bright band lamp bead, liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104501029A CN104501029A (en) | 2015-04-08 |
| CN104501029B true CN104501029B (en) | 2017-09-29 |
Family
ID=52942461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410664757.0A Active CN104501029B (en) | 2014-11-19 | 2014-11-19 | LED backlight module and eliminate the method for its bright band lamp bead, liquid crystal display |
Country Status (1)
| Country | Link |
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| CN (1) | CN104501029B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696774B (en) * | 2018-12-10 | 2023-07-14 | 杭州炽云科技有限公司 | Structure of high-brightness LCD backlight module and experimental method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201739957U (en) * | 2009-11-26 | 2011-02-09 | 金芃 | Light guide plate with V-shaped groove of LED backlight source |
| CN102650383A (en) * | 2011-02-24 | 2012-08-29 | 夏普株式会社 | Light source module and optical member |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050121578A (en) * | 2004-06-22 | 2005-12-27 | 삼성전자주식회사 | Backlight unit |
| CN102486275A (en) * | 2010-12-06 | 2012-06-06 | 奇美电子股份有限公司 | Backlight module and liquid crystal display device |
| CN102628565B (en) * | 2012-03-26 | 2014-01-15 | 深圳市华星光电技术有限公司 | Direct type backlight module and liquid crystal display device |
-
2014
- 2014-11-19 CN CN201410664757.0A patent/CN104501029B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201739957U (en) * | 2009-11-26 | 2011-02-09 | 金芃 | Light guide plate with V-shaped groove of LED backlight source |
| CN102650383A (en) * | 2011-02-24 | 2012-08-29 | 夏普株式会社 | Light source module and optical member |
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| Publication number | Publication date |
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| CN104501029A (en) | 2015-04-08 |
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