CN105137653A - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
- Publication number
- CN105137653A CN105137653A CN201510534858.0A CN201510534858A CN105137653A CN 105137653 A CN105137653 A CN 105137653A CN 201510534858 A CN201510534858 A CN 201510534858A CN 105137653 A CN105137653 A CN 105137653A
- Authority
- CN
- China
- Prior art keywords
- lamp bar
- light guide
- guide plate
- backlight module
- hole
- 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.)
- Granted
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Classifications
-
- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- 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 provides a backlight module and a display device. The backlight module comprises a light guide plate, a back plate and a lamp bar. The back plate comprises a first side face opposite to the light inlet face of the light guide plate, and the lamp bar is fixed to the first side face of the back plate. A limiting pillar structure used for limiting the space between the lamp bar and the light guide plate to a predetermined value is arranged between the first side face of the back plate and the light inlet face of the light guide plate. In the backlight module, the limiting pillar structure is arranged between the light guide plate and the lamp bar to conduct fixing and limiting on the light guide plate and the lamp bar so as to ensure the distance between the light guide plate and the lamp bar and prevent the lamp colliding phenomenon caused by heating expansion of the light guide plate. Compared with the manner that a back plate is bent in the prior art, the size of the limiting pillar structure can be designed according to needs, the light guide plate does not need to be grooved, and the problems of bright corners and dark corners can be avoided.
Description
Technical field
The present invention relates to display technique field, particularly relate to a kind of backlight module and display device.
Background technology
Liquid crystal display (LCD, LiquidCrystalDisplay) is at present conventional flat-panel monitor, and backlight module is the vitals of liquid crystal display, for when liquid crystal display operation for liquid crystal panel provides light source.Along with the progress of LED technology, high-capacity LED (LightEmittingDiode light emitting diode) is applied in backlight gradually.
Backlight module is divided into side entrance back module and down straight aphototropism mode set two kinds according to the difference of light source incidence position.Down straight aphototropism mode set is that LED (LightEmittingDiode light emitting diode) is arranged on liquid crystal panel rear, and direct forming surface light source is supplied to liquid crystal panel; And side entrance back module is the back plate edges multiple LED of backlight module being located at liquid crystal panel proceeds posterolateral, the light that multiple LED lamp bar sends is from light guide plate (LGP, LightGuidePlate) incidence surface of side enters light guide plate, penetrate from light guide plate exiting surface after reflection and diffusion, again via optical diaphragm group, be supplied to liquid crystal panel with forming surface light source.
In side entrance back module, need between light guide plate and LED lamp bar to leave space, hit lamp to prevent light guide plate expanded by heating and LED.Figure 1 shows that a kind of structural representation adopting the display device of side entrance back module in prior art.As shown in Figure 1, normally by backboard 30 bending is fixed light guide plate 10 and LED lamp bar 20, and the distance between light guide plate 10 and LED lamp bar 20 is ensured.But for narrow frame display device, according to above-mentioned side entrance back module, two angles in light guide plate 10 need grooving, to coordinate with the dogleg section on backboard 30, can cause like this producing dark angle and Liang Jiao.
Summary of the invention
The object of the present invention is to provide a kind of backlight module and display device, structure is simple, can ensure the distance between light guide plate and LED, can not produce bright angle and dark angle simultaneously.
Technical scheme provided by the present invention is as follows:
A kind of backlight module, comprising: light guide plate, backboard and lamp bar, described backboard comprises first side relative with the incidence surface of described light guide plate, and described lamp bar is fixed on the first side of described backboard; The limited post structure for the distance between described lamp bar and described light guide plate being defined as predetermined value is supported between first side and the incidence surface of described light guide plate of described backboard.
Further, described limited post structure comprises stud, and described stud one end is resisted against the incidence surface of described light guide plate, and the other end is threaded onto on the first side of described backboard.
Further, first side of described backboard offers the first hole, described lamp bar offers second hole corresponding with described first hole site, and described stud is arranged in described first hole and described second hole, and is fixed on the first side of described backboard by described lamp bar.
Further, in two the first holes, at least one first hole is the elongate holes extended along described lamp bar length direction.
Further, in two the first holes, one is threaded hole, and another is the elongate holes extended along described lamp bar length direction.
Further, in two the second holes, at least one second hole is the elongate holes extended along described lamp bar length direction.
Further, bondd by heat-conducting glue between described lamp bar and the first side of described backboard fixing.
A kind of display device, comprises backlight module as above.
Beneficial effect of the present invention is as follows:
In backlight module provided by the present invention, by arranging limited post structure between light guide plate and lamp bar, be fixed spacing to light guide plate and lamp bar, ensure that the distance between light guide plate and lamp bar, namely while guarantee light inlet light efficiency, prevent light guide plate expanded by heating from causing hitting the phenomenon of lamp, with prior art, adopt the mode of backboard bending to compare, the size of limited post structure can design according to demand, without the need to light guide plate grooving, the problem at bright angle and dark angle can not be produced.
Accompanying drawing explanation
Fig. 1 represents the structural representation of backlight module in prior art;
Fig. 2 represents the structural representation of a kind of backlight module provided in the embodiment of the present invention;
Fig. 3 represents the structural representation of lamp bar in the backlight module that the embodiment of the present invention provides.
Embodiment
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
For in prior art, by backboard bending is fixed spacing to light guide plate and lamp bar in backlight module, the technical matters at the bright angle of easy generation and dark angle, the invention provides a kind of backlight module, structure is simple, the distance between light guide plate and LED can be ensured, prevent bright angle and dark angle simultaneously.
As shown in Figure 2, backlight module provided by the present invention, comprising: light guide plate 100, backboard and lamp bar 300, and described backboard comprises first side 200 relative with the incidence surface of described light guide plate 100, and described lamp bar 300 is fixed on the first side 200 of described backboard; The limited post structure 400 for the distance between described lamp bar 300 and described light guide plate 100 being defined as predetermined value is supported between first side 200 and the incidence surface of described light guide plate 100 of described backboard.
In backlight module provided by the present invention, by arranging limited post structure 400 between light guide plate 100 and lamp bar 300, be fixed spacing to light guide plate 100 and lamp bar 300, ensure, between light guide plate 100 and lamp bar 300, there is predeterminable range, namely while ensureing light inlet light efficiency, prevent light guide plate 100 expanded by heating from causing hitting the phenomenon of lamp, with prior art, the mode of backboard bending is adopted to compare, the size of limited post structure 400 can design according to demand, without the need to light guide plate 100 grooving, the problem at bright angle and dark angle can not be produced.
In the backlight module that the embodiment of the present invention provides, preferably, as shown in Figure 2, described limited post structure 400 adopts stud 401, wherein said stud 401 one end is resisted against the incidence surface of described light guide plate 100, and the other end is threaded onto on the first side 200 of described backboard.
Such scheme, when assembling, stud 401 can be screwed and on the first side 200 of backboard, light guide plate 100 and lamp bar 300 be fixed, ensure the distance between light guide plate 100 and lamp bar 300, structure is simple, and easy to assembly, in addition, stud 401 is also convenient to regulate light guide plate 100 to be predetermined value with the spacing of lamp bar 300.
It should be noted that, in other embodiments of the invention, described limited post structure 400 can also adopt other modes to realize, such as: protruding column can be set on lamp bar 300, using described protruding column as described limited post structure 400, ensure the distance between light guide plate 100 and lamp bar 300, particularly, this protruding column is arranged on lamp bar 300 by various ways such as adhesive tape bondings.
In addition, in the backlight module that the embodiment of the present invention provides, preferably, first side 200 of described backboard offers the first hole, described lamp bar 300 offers second hole corresponding with described first hole site, described stud 401 is arranged in described first hole and described second hole, and is fixed on the first side 200 of described backboard by described lamp bar 300.
Adopt such scheme, when backlight module is assembled, stud 401 can be directly utilized to be fixed on by lamp bar 300 on first side 200 of backboard, like this, stud 401 1 aspect plays fixing effect spacing between light guide plate 100 and lamp bar 300, can realize fixing between lamp bar 300 and backboard on the other hand.
In addition, in the backlight module that the embodiment of the present invention provides, preferably, as shown in Figure 2, described first hole has two, and two the first holes correspond respectively to the setting of described lamp bar 300 two ends, described second hole has two, and two the second holes are separately positioned on lamp bar 300 two ends, correspondingly, stud 401 has two, and two studs 401 are threaded onto in the first corresponding hole and the second hole respectively.
Adopt such scheme, stud 401 can be arranged on outside the LED of lamp bar 300, arranges corresponding to beyond the viewing area of display screen, can not have an impact to display effect, can not there is bright angle and dark angle.
Should be understood that, in actual applications, the quantity of described first hole, described second hole and described stud 401 and particular location are not done to limit to, can adjust according to the actual requirements.
In addition, preferably, in two the first holes, at least one first hole is the elongate holes extended along described lamp bar 300 length direction.
Adopt such scheme, the machining accuracy in the second hole on lamp bar 300 and the first hole on backboard can be reduced, if when there is an error position in the first hole on the second hole on lamp bar 300 and backboard, the position of stud 401 can be adjusted by elongate holes, is convenient to assembling.
Preferred further, in two the first holes, one is round thread hole, and another is the elongate holes extended along described lamp bar 300 length direction.Described elongate holes can be square hole or can also be oblong hole etc., does not do to limit to this.
In such scheme, two the first holes are designed to round thread hole, and another is designed to elongate holes, wherein round thread hole can with the second hole accurate contraposition, play the effect of guarantee assembly precision and coordinate fixing effect with bolt, elongate holes then can reduce the assembling difficulty that error causes.
In addition, preferably, in two the second holes, at least one second hole is the elongate holes extended along described lamp bar 300 length direction.
Preferred further, as shown in Figure 3, in two the second holes 301, one is round thread hole, and another is the elongate holes extended along described lamp bar 300 length direction.Described elongate holes can be square hole or can also be oblong hole etc., does not do to limit to this.
It is appreciated of course that, in other embodiments of the invention, also can be that two the second holes 301 on described backboard on two the first holes or described lamp bar 300 are threaded hole or elongate holes.
In addition, in the backlight module that the embodiment of the present invention provides, preferably, bondd by heat-conducting glue between described lamp bar 300 and the first side 200 of described backboard fixing.
Adopt such scheme, when lamp bar 300 length is less, stud 401 can be directly utilized to be fixed on the first side 200 of backboard by lamp bar 300 two ends, and when if lamp bar 300 length is larger, in order to ensure the fixed property of lamp bar 300 further, the back side of lamp bar 300 can also be utilized heat-conducting glue will be fixed on the first side 200 of backboard.
In addition, in embodiments of the invention, additionally provide a kind of display device, comprise backlight module as above.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. a backlight module, comprising: light guide plate, backboard and lamp bar, and described backboard comprises first side relative with the incidence surface of described light guide plate, and described lamp bar is fixed on the first side of described backboard; It is characterized in that, between first side and the incidence surface of described light guide plate of described backboard, support the limited post structure for the distance between described lamp bar and described light guide plate being defined as predetermined value.
2. backlight module according to claim 1, is characterized in that,
Described limited post structure comprises stud, and described stud one end is resisted against the incidence surface of described light guide plate, and the other end is threaded onto on the first side of described backboard.
3. backlight module according to claim 2, is characterized in that,
First side of described backboard offers the first hole, described lamp bar offers second hole corresponding with described first hole site, described stud is arranged in described first hole and described second hole, and is fixed on the first side of described backboard by described lamp bar.
4. backlight module according to claim 3, is characterized in that,
Described first hole and described second hole all have two at least, and wherein, two the second holes are arranged at described lamp bar two ends respectively, and two the first holes correspond respectively to two the second holes and arrange.
5. backlight module according to claim 4, is characterized in that,
In two the first holes, at least one first hole is the elongate holes extended along described lamp bar length direction.
6. backlight module according to claim 5, is characterized in that,
In two the first holes, one is threaded hole, and another is the elongate holes extended along described lamp bar length direction.
7. backlight module according to claim 4, is characterized in that,
In two the second holes, at least one second hole is the elongate holes extended along described lamp bar length direction.
8. backlight module according to claim 1, is characterized in that,
Bondd by heat-conducting glue between described lamp bar and the first side of described backboard fixing.
9. a display device, is characterized in that, comprises the backlight module as described in any one of claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510534858.0A CN105137653B (en) | 2015-08-27 | 2015-08-27 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510534858.0A CN105137653B (en) | 2015-08-27 | 2015-08-27 | Backlight module and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105137653A true CN105137653A (en) | 2015-12-09 |
| CN105137653B CN105137653B (en) | 2020-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510534858.0A Active CN105137653B (en) | 2015-08-27 | 2015-08-27 | Backlight module and display device |
Country Status (1)
| Country | Link |
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| CN (1) | CN105137653B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106773305A (en) * | 2016-12-30 | 2017-05-31 | 奥英光电（苏州）有限公司 | A kind of guide-lighting board fixer |
| CN110824606A (en) * | 2018-08-13 | 2020-02-21 | 深圳Tcl新技术有限公司 | Limiting block, limiting structure between light guide plate and LED and display device |
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2015
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| US20120249886A1 (en) * | 2009-12-16 | 2012-10-04 | Sharp Kabushiki Kaisha | Lighting device, display device and television receiver |
| KR20110133846A (en) * | 2010-06-07 | 2011-12-14 | 엘지이노텍 주식회사 | Backlight unit and a display device |
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Cited By (2)
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| CN106773305A (en) * | 2016-12-30 | 2017-05-31 | 奥英光电（苏州）有限公司 | A kind of guide-lighting board fixer |
| CN110824606A (en) * | 2018-08-13 | 2020-02-21 | 深圳Tcl新技术有限公司 | Limiting block, limiting structure between light guide plate and LED and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105137653B (en) | 2020-04-17 |
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