CN105785646A - Backlight module - Google Patents

Backlight module Download PDF

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Publication number
CN105785646A
CN105785646A CN201610297970.1A CN201610297970A CN105785646A CN 105785646 A CN105785646 A CN 105785646A CN 201610297970 A CN201610297970 A CN 201610297970A CN 105785646 A CN105785646 A CN 105785646A
Authority
CN
China
Prior art keywords
plate
backlight module
base plate
led
reflector plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610297970.1A
Other languages
Chinese (zh)
Inventor
陶晓军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Olympic Optical (suzhou) Co Ltd
Original Assignee
British Olympic Optical (suzhou) Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by British Olympic Optical (suzhou) Co Ltd filed Critical British Olympic Optical (suzhou) Co Ltd
Priority to CN201610297970.1A priority Critical patent/CN105785646A/en
Publication of CN105785646A publication Critical patent/CN105785646A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133605Direct backlight including specially adapted reflectors
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133603Direct backlight with LEDs
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133615Edge-illuminating devices, i.e. illuminating from the side

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The invention discloses a backlight module which comprises a rear shell, a reflecting sheet and an illuminating part, wherein the rear shell comprises two lateral plates, a base plate and a cover plate; the cover plate is arranged in the form of inclining and forming an acute angle with the base plate and is fixedly connected with the lateral plates; the illuminating part is arranged on the base plate and is used for outputting a light source; and the reflecting sheet is arranged on the cover plate and is used for receiving the light source output by the illuminating part and uniformly reflecting and scattering the light source output by the illuminating part to the direction of a liquid crystal screen. The development cost of the backlight module is effectively reduced; the backlight module can be more effectively matched with a light guide plate, for converting the light source output by the illuminating part into an area light source; and the manufacturing cost of the backlight template is further reduced.

Description

A kind of backlight module
Technical field
The present invention relates to Display Technique field, particularly relate to a kind of backlight module.
Background technology
Along with the development of Display Technique, liquid crystal display has become as most commonly seen display device.Liquid crystal display is mainly made up of backlight module and liquid crystal module.At present, backlight module mainly adopts straight-down negative or side entering type two ways.Wherein, in straight-down negative mode, the light that LED light source sends penetrates in front directly up after diffuser plate is dispersed;And in side entering type mode, LED light source is arranged on the side of light guide plate, the bottom surface of light guide plate forms site.What LED encapsulation sent is optically coupled into light guide plate, by the reflection of reflector plate and site and scattering, propagates to liquid crystal display screen direction.
At present, down straight aphototropism mode set and side entrance back module generally all adopt ferrum backboard as the support of reflector plate.Ferrum backboard is owing to being metal plate punching part, and the die cost of exploitation ferrum backboard is higher.And in side entrance back module, not only ferrum backboard is relatively costly, and requiring over printing on light guide plate and generate site, processing technology difficulty is big, and defective products rate is higher.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of backlight module, to solve the technical problem that in prior art, manufacturing backlight module cost is high and fraction defective is high.
Embodiments provide a kind of backlight module, including: back cover, reflector plate and luminous component;
Described back cover includes: two side plates, base plates and be inclined to acute angle relative to base plate and arrange and connect and the fixing cover plate connecting described side plate;
Described luminous component is arranged on described base plate, for output light source;
Described reflector plate is arranged on described cover plate, for the light source receiving luminous component output the light source exported to luminous component described in liquid crystal display screen direction non-uniform reflection and scattering.
Further, described luminous component is LED light array.
Further, described LED light array includes at least two LED, and described at least two LED is equidistantly arranged on described base plate.
Further, described LED light array is arranged on described away from the base plate of the side of bonnet.
Further, the angle between projecting direction and the described base plate of described LED is arranged according to predetermined angle, the described predetermined angle angle-determining according to the vertical dimension of LED light array and described reflector plate and described reflector plate with described base plate.
Further, described reflector plate sticks on described cover plate.
Further, described back cover is formed in one.
Further, described reflector plate and described lid surface are amassed identical.
Further, the limit of described reflector plate and angle are arranged according to the slope set and/or curvature.
The backlight module that the embodiment of the present invention provides, by reflector plate is arranged on the cover plate of back cover, the cover plate utilizing back cover substitutes ferrum backboard, simultaneously, luminous component is arranged on the base plate of back cover, same reflecting effect can be realized by the reflector plate arranged on cover plate, effectively reduce the development cost of backlight module, and the light source realizing being sent by luminous component better can be coordinated with light guide plate to be converted to area source, reduce further the cost of manufacture of backlight template.
Accompanying drawing explanation
By reading the detailed description that non-limiting example is made made with reference to the following drawings, the other features, objects and advantages of the present invention will become more apparent upon:
Fig. 1 is the structural representation of the backlight template that the embodiment of the present invention one provides;
Fig. 2 is the internal structure sectional view of the backlight template that the embodiment of the present invention one provides;
Fig. 3 is the backlight template luminous reflectance schematic diagram that the embodiment of the present invention one provides.
The technical characteristic that accompanying drawing labelling in figure refers to respectively is:
1, back cover;2, reflector plate;3, LED light array;31, LED;4, side plate;
5, base plate;6, cover plate;
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.It is understood that specific embodiment described herein is used only for explaining the present invention, but not limitation of the invention.It also should be noted that, for the ease of describing, accompanying drawing illustrate only part related to the present invention but not full content.
In embodiments of the present invention, when not making contrary explanation, the noun of locality of use as " upper and lower, top, the end " usually for direction shown in the drawings or for each parts mutual alignment relationship description word on vertical, vertical or gravity direction.
Embodiment one
The embodiment of the present invention one provides a kind of backlight template.Fig. 1 is the structural representation of the backlight template that the embodiment of the present invention one provides.Referring to Fig. 1, described backlight template includes: back cover 1, reflector plate 2 and luminous component;Described back cover 1 includes: two side plates 4, base plates 5 and be inclined to acute angle relative to base plate 5 and arrange and connect and the fixing cover plate 6 connecting described side plate 4;Described luminous component is arranged on described base plate 5, for output light source;Described reflector plate 2 is arranged on described cover plate 6, for the light source receiving luminous component output the light source exported to luminous component described in liquid crystal display screen direction non-uniform reflection and scattering.
As seen from Figure 1, described backlight template includes: back cover 1, reflector plate 2 and luminous component, and wherein back cover 1 includes: two side plates 4, base plates 5 and be inclined to acute angle relative to base plate 5 and arrange and connect and the fixing cover plate 6 connecting described side plate 4.Exemplary, back cover 1 can be side plate 4, base plate 5 and the integrated structure of cover plate 6, and concrete size is designed according to the actual requirements.Luminous component is arranged on the base plate 5 of back cover 1.To cover plate 6 direction output light source.Reflector plate 2 is that a kind of its back side of can passing through produces the slide of reflection, have a front being partially or completely made up of multiple composite surfaces, and each composite surface is all for forming by the face of cylinder only tilted to direction and to curved surface or the plane of opposite direction inclination.Reflector plate 2 is arranged on cover plate 6, for the light source receiving luminous component output the light source exported to luminous component described in liquid crystal display screen direction non-uniform reflection and scattering.So that screen is able to receive that light.Exemplary, reflector plate 2 is white design, it is possible to adopt PET material.In the present embodiment, reflector plate 2 is fitted on the cover plate 6 of back cover 1 by adherent fashion.
In the present embodiment, after powered up, the luminous component of backlight module is as light source, launch corresponding light, the reflection of the reflector plate 2 that the light launched is arranged on cover plate 6 and refraction, launch to screen orientation uniformly and launch light, so that screen is able to receive that the light that luminous component is launched.
Luminous component can select cold-cathode tube fluorescent lamp, LED and electroluminescent etc..In the present embodiment, select LED 31 as luminous component.LED and light emitting diode, made by containing compounds such as gallium (Ga), arsenic (As), phosphorus (P), nitrogen (N), utilize semiconductor chip as luminescent material, meeting, by carrier, the energy releasing surplus in the semiconductors causes photon to launch, it is possible to directly send the light of white.Concrete, it is possible to select the LED light array 3 that multiple LED 31 forms as luminous component.LED 31 has the advantages such as luminous efficiency height, life-span length, little, the good directionality of volume.It is particularly suitable for application as the luminescence component in backlight template.Referring to Fig. 1, described LED light array 3 includes at least two LED 31, and described at least two LED 31 is equidistantly arranged on described base plate 5.Light can be launched to reflector plate 2 equably by spaced set LED 31, make reflector plate 2 receive luminous component output light more balanced.
Additionally, LED light array 3 is arranged on described away from, on the base plate 5 of the side of bonnet, there is certain distance between LED light array 3 and reflector plate 2, it is possible to make the light that LED light array 3 is launched better be incident upon on sheet emitting.
Fig. 2 is the internal structure sectional view of the backlight template that the embodiment of the present invention one provides, as seen from Figure 2, angled setting between projecting direction and the described base plate 5 of the LED 31 in LED light array 3, the projecting direction of LED 31 is typically between 0 °-90 °, and the projecting direction of LED 31 determines the light that LED 31 sends and is incident upon the ratio of sheet emitting.Concrete, it is possible to the angle-determining according to the vertical dimension of LED light array 3 and described reflector plate 2 and described reflector plate 2 and described base plate 5.In the present embodiment, considering the angle formed between the vertical dimension of reflector plate 2 described in LED light array 3 and reflector plate 2 and described base plate 5, the angle between projecting direction and the described base plate 5 of LED 31 is 60 °.
Reflector plate 2 can utilize scattered reflection, and what be effectively increased light can utilization rate.In the present embodiment, reflector plate 2 is PET material, forms reflector plate 2 through fine foaming.The diameter of bubble has about a few micrometers, runs more fine, and density is more high, and reflectance is also more high.Good tortuosity ratio interface can be formed, enter the light of reflector plate 2, by extremely complex refraction, it is possible to make the light of the overwhelming majority return in light guide plate.As seen from Figure 2, reflector plate 2 sticks on described cover plate 6, and identical with described cover plate 6 surface area.Namely reflector plate 2 is completely covered cover plate 6, it is possible to strengthen reflective surface area, is effectively improved reflection efficiency, improves the utilization rate of light source.
At the edge of described cover plate 6, there is the gap formed between cover plate 6 and side plate 4, in order to better improve reflection efficiency, in the present embodiment, the limit of reflector plate 2 and angle are arranged according to the slope set and/or curvature, to realize the laminating degree higher with described cover plate 6, and then improve reflection efficiency.
Below in conjunction with the work process of the present embodiment, the present invention will be further described, and Fig. 3 is the backlight template luminous reflectance schematic diagram of the offer of the embodiment of the present invention one.Referring in Fig. 3, Fig. 3, the direction of arrow is radiation direction.After backlight template is energized, the LED light array 3 being arranged on base plate 5 works, to cover plate 6 direction launch light, the reflector plate 2 being arranged on cover plate 6 receive luminous component output light source, and to described in liquid crystal display screen direction non-uniform reflection and scattering luminous component output light source.Can adjusting the LED light array 3 position at base plate 5, making the radiation direction that LED 31 is launched is towards reflector plate 2, it is possible to be arranged on by LED light array 3 described away from the base plate 5 of the side of bonnet.In addition, angle between the projecting direction of the LED 31 in LED light array 3 and described base plate 5 can be arranged according to predetermined angle, the described predetermined angle angle-determining according to vertical dimension with described reflector plate 2 of LED light array 3 and described reflector plate 2 with described base plate 5.To realize the purpose that reflector plate 2 better receives the light of LED light array 3 transmitting.
LED light array 3 includes multiple LED 31, and wherein, each LED 31 is equidistantly arranged on described base plate 5, so that the light that LED light array 3 sends is incident upon on expelling plate more uniformly.As seen from Figure 3, adopt the backlight template that the embodiment of the present invention provides, the cover plate 6 utilizing back cover 1 substitutes ferrum backboard, reduce the manufacturing cost of backlight module, simultaneously, owing to arranging reflector plate 2 on bonnet, it is possible to make light alignment liquid crystal display screen direction non-uniform reflection and scattering that LED light array 3 launches, enable screen to present same brightness.
The backlight module that the embodiment of the present invention one provides, by reflector plate is arranged on the cover plate of back cover, the cover plate utilizing back cover substitutes ferrum backboard, simultaneously, luminous component is arranged on the base plate of back cover, same reflecting effect can be realized by the reflector plate arranged on cover plate, effectively reduce the development cost of backlight module, and the light source realizing being sent by luminous component better can be coordinated with light guide plate to be converted to area source, reduce further the cost of manufacture of backlight template.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute without departing from protection scope of the present invention.Therefore, although the present invention being described in further detail by above example, but the present invention is not limited only to above example, when without departing from present inventive concept, other Equivalent embodiments more can also be included, and the scope of the present invention is determined by appended right.

Claims (9)

1. a backlight module, it is characterised in that, including: back cover, reflector plate and luminous component;
Described back cover includes: two side plates, base plates and be inclined to acute angle relative to base plate and arrange and connect and the fixing cover plate connecting described side plate;
Described luminous component is arranged on described base plate, for output light source;
Described reflector plate is arranged on described cover plate, for the light source receiving luminous component output the light source exported to luminous component row described in liquid crystal display screen direction non-uniform reflection and scattering.
2. backlight module according to claim 1, it is characterised in that described luminous component is LED light array.
3. backlight module according to claim 1, it is characterised in that described LED light array includes at least two LED, and described at least two LED is equidistantly arranged on described base plate.
4. backlight module according to claim 1, it is characterised in that described LED light array is arranged on described away from the base plate of the side of bonnet.
5. backlight module according to claim 3, it is characterized in that, angle between projecting direction and the described base plate of described LED is arranged according to predetermined angle, the described predetermined angle angle-determining according to the vertical dimension of LED light array and described reflector plate and described reflector plate with described base plate.
6. backlight module according to claim 1, it is characterised in that described reflector plate sticks on described cover plate.
7. backlight module according to claim 1, it is characterised in that described back cover is formed in one.
8. backlight module according to claim 1, it is characterised in that described reflector plate and described lid surface are amassed identical.
9. backlight module according to claim 8, it is characterised in that the limit of described reflector plate and angle are arranged according to the slope set and/or curvature.
CN201610297970.1A 2016-05-06 2016-05-06 Backlight module Pending CN105785646A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610297970.1A CN105785646A (en) 2016-05-06 2016-05-06 Backlight module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610297970.1A CN105785646A (en) 2016-05-06 2016-05-06 Backlight module

Publications (1)

Publication Number Publication Date
CN105785646A true CN105785646A (en) 2016-07-20

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ID=56400910

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610297970.1A Pending CN105785646A (en) 2016-05-06 2016-05-06 Backlight module

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107153299A (en) * 2017-06-08 2017-09-12 深圳市华星光电技术有限公司 Backlight module and liquid crystal display device

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5054885A (en) * 1988-10-11 1991-10-08 Minnesota Mining And Manfuacturing Company Light fixture including a partially collimated beam of light and reflective prisms having peaks lying on a curved surface
TW261684B (en) * 1993-09-24 1995-11-01 Chanotani Sangyo Kk
US6454452B1 (en) * 1999-04-22 2002-09-24 Mitsubishi Denki Kabushiki Kaisha Backlight for liquid crystal display device
CN101029999A (en) * 2006-03-02 2007-09-05 三菱电机株式会社 Display device
CN101149518A (en) * 2006-09-21 2008-03-26 中华映管股份有限公司 Backlight module
CN101156025A (en) * 2005-03-29 2008-04-02 富士胶片株式会社 Light conducting member, planar illuminator employing it, and rod-like illuminator
KR20120026691A (en) * 2010-09-10 2012-03-20 엘지디스플레이 주식회사 Liquid crystal display device
CN103363398A (en) * 2012-03-26 2013-10-23 三星显示有限公司 Backlight assembly
CN103839487A (en) * 2012-11-27 2014-06-04 三星显示有限公司 Display device
CN204129382U (en) * 2014-10-08 2015-01-28 Tcl海外电子(惠州)有限公司 Backing structure and liquid crystal indicator
CN206147216U (en) * 2016-05-06 2017-05-03 奥英光电(苏州)有限公司 Backlight module

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5054885A (en) * 1988-10-11 1991-10-08 Minnesota Mining And Manfuacturing Company Light fixture including a partially collimated beam of light and reflective prisms having peaks lying on a curved surface
TW261684B (en) * 1993-09-24 1995-11-01 Chanotani Sangyo Kk
US6454452B1 (en) * 1999-04-22 2002-09-24 Mitsubishi Denki Kabushiki Kaisha Backlight for liquid crystal display device
CN101156025A (en) * 2005-03-29 2008-04-02 富士胶片株式会社 Light conducting member, planar illuminator employing it, and rod-like illuminator
CN101029999A (en) * 2006-03-02 2007-09-05 三菱电机株式会社 Display device
CN101149518A (en) * 2006-09-21 2008-03-26 中华映管股份有限公司 Backlight module
KR20120026691A (en) * 2010-09-10 2012-03-20 엘지디스플레이 주식회사 Liquid crystal display device
CN103363398A (en) * 2012-03-26 2013-10-23 三星显示有限公司 Backlight assembly
CN103839487A (en) * 2012-11-27 2014-06-04 三星显示有限公司 Display device
CN204129382U (en) * 2014-10-08 2015-01-28 Tcl海外电子(惠州)有限公司 Backing structure and liquid crystal indicator
CN206147216U (en) * 2016-05-06 2017-05-03 奥英光电(苏州)有限公司 Backlight module

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107153299A (en) * 2017-06-08 2017-09-12 深圳市华星光电技术有限公司 Backlight module and liquid crystal display device

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Application publication date: 20160720

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