CN105334664A - Side fed backlight module - Google Patents
Side fed backlight module Download PDFInfo
- Publication number
- CN105334664A CN105334664A CN201510828479.2A CN201510828479A CN105334664A CN 105334664 A CN105334664 A CN 105334664A CN 201510828479 A CN201510828479 A CN 201510828479A CN 105334664 A CN105334664 A CN 105334664A
- Authority
- CN
- China
- Prior art keywords
- guide plate
- light source
- cut groove
- light guide
- back module
- 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
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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
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention relates to the field of liquid crystal display, and discloses a side fed backlight module which comprises a light guide plate and a light source, wherein one or more V-CUT grooves are formed in the light guide plate; the one or more V-CUT grooves are formed in an incident side of the light guide plate; the light source and the incident side of the light guide plate are oppositely arranged. The side fed backlight module is simple in structure and reasonable in design, and due to micro structure processing on the light guide plate, partial light intensity of the incident side can be weakened, difference of wave crests and wave troughs of light intensity distribution can be reduced, and the phenomenon of uneven brightness can be effectively solved.
Description
Technical field
The present invention relates to field of liquid crystal display, particularly relate to a kind of side entrance back module.
Background technology
The liquid crystal material of liquid crystal display cannot, from main light emission, must provide backlight module to provide required light source.Generally speaking, backlight module can be divided into side entrance back module and down straight aphototropism mode set two kinds of forms; And down straight aphototropism mode set needs to have certain light mixing distance, therefore adopt the thickness of the liquid crystal display of down straight aphototropism mode set undesirable; The side of light source by light guide plate is injected by side entrance back module, does not relate to the problem of light mixing distance, and therefore based on the consideration of liquid crystal display slimming, present technology adopts side entrance back module usually.
In liquid crystal display side entrance back module, generally use light emitting diode (LightEmittingDiode, LED) as light source, plurality of LEDs pointolite is distributed in the side of light guide plate according to linear array or many sides provide illumination.Due to the factor of the lighting angle of LED point light source itself and the spacing of adjacent LED, penetrate in the light outside light guide plate shinny from the part close to LED point light source, from the part obfuscation away from LED point light source, therefore whole liquid crystal display can present the effect of brightness irregularities.
In prior art, in order to solve the problem of bright dark inequality, general by increasing device between the light source and light guide plate of backlight module, manufacturing cost will inevitably be caused to raise, and make the complex structure of backlight module, therefore, how by the improvement to light conducting plate structure, thus the problem effectively solving brightness disproportionation has become one of those skilled in the art's urgent problem.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of side entrance back module, structure is simple, reasonable in design, by carrying out microstructure process to light guide plate, incidence surface local light intensity can be weakened, and the otherness of light distribution Wave crest and wave trough is reduced, effectively solves the phenomenon of bright dark inequality.
In order to solve the problems of the technologies described above, the invention provides a kind of side entrance back module, comprise light guide plate and light source, described light guide plate has V-CUT groove, described V-CUT groove is arranged on the incidence surface of described light guide plate, the quantity of described V-CUT groove is one or more, and the incidence surface of described light source and described light guide plate is oppositely arranged.
Preferably, described V-CUT groove is concave inward structure, and described V-CUT groove middle part is provided with a projection, and the top of described projection is towards the opening direction of described V-CUT groove.
Preferably, described in described V-CUT groove, the side of protruding both sides is arcwall face.
Particularly, described projection is that " V " font is protruding, and in described " V " font projection, two sides of " V " character form structure form V-CUT angle.
In detail, described V-CUT angular region is 60 ° ~ 150 °
Preferably, described light source and one_to_one corresponding identical with the quantity of described V-CUT groove, each V-CUT groove and corresponding light source, just to setting, have interval between adjacent V-CUT groove.
Preferably, described light source is LED.
Alternatively, described light source is fixedly mounted on lamp bar, and described lamp bar is parallel to the incidence surface of described light guide plate.
Further, described light source linearly distributes on described lamp bar.
A kind of side entrance back module of the present invention, has following beneficial effect:
1. a kind of side entrance back module of the present invention is provided with concave inward structure at the incidence surface of light guide plate, to be reflected and reflect by curved surface to light, makes light distribution even, effectively reduces the problem of bright dark inequality, improve the taste of incidence surface.
2. the V-CUT groove middle part of a kind of side entrance back module of the present invention is provided with V-CUT angle, can weaken the light intensity directly over light source.
3. a kind of side entrance back module of the present invention carries out microstructure process to light guide plate, and without the need to increasing other servicing units, structure is simple, reasonable in design, cost is lower, improves the light distribution of light guide plate incident side, weaken the phenomenon of the bright dark inequality of incident side, the luminescence efficiency of efficiency utilization LED.
4. a kind of side entrance back module of the present invention is owing to improving the light distribution between luminous zone and non-light-emitting area, the quantity of minimizing light source that therefore can be suitable, saves the energy.
Accompanying drawing explanation
In order to be illustrated more clearly in technical scheme of the present invention, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of side entrance back module of the present invention;
Fig. 2 is the cross sectional representation of V-CUT groove in a kind of side entrance back module of the present invention.
In figure: 1-light guide plate, 11-V-CUT groove, 12-V-CUT angle, 2-light source, 3-lamp bar.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, all belongs to the scope of protection of the invention.
In one embodiment, as depicted in figs. 1 and 2, embodiments provide a kind of side entrance back module, comprise light guide plate 1 and light source 2, described light guide plate 1 has V-CUT groove 11, described V-CUT groove 11 is arranged on the incidence surface of described light guide plate 1, and the quantity of described V-CUT groove 11 is 3, and described light source 2 is oppositely arranged with the incidence surface of described light guide plate 1.
Described V-CUT groove 11 is concave inward structure, described V-CUT groove 11 middle part is provided with a projection, the top of described projection is towards the opening direction of described V-CUT groove 11, the concave inward structure of described V-CUT groove 11 effectively can improve the light distribution of light guide plate incident side, weaken the phenomenon of the bright dark inequality of incident side, the luminescence efficiency of efficiency utilization LED, particularly, it is protruding that described V-CUT groove 11 middle part is provided with " V " font, in described " V " font projection, two sides of " V " character form structure form V-CUT angle 12, the angle at described V-CUT angle 12 is 60 °, the side of the protruding both sides of " V " font described in described V-CUT groove 11 is arcwall face, described V-CUT angle 12 is positioned at directly over described light source 2, described V-CUT angle 12 can not only weaken the light intensity directly over light source, and can reflect light or reflect, be conducive to light distribution even.
Described light source 2 is identical with the quantity of described V-CUT groove 11, be 3, and one_to_one corresponding, each V-CUT groove 11 and corresponding light source 2 are just to setting, distance between each V-CUT groove 11 and corresponding light source 2 is identical, has interval between adjacent V-CUT groove 11.
Described light source 2 is fixedly mounted on lamp bar 3, described lamp bar 3 is parallel to the incidence surface of described light guide plate 1, described light source 2 linearly distributes on described lamp bar 3, light source 2 described in the present embodiment is LED, between adjacent described LED, there is interval, thus form luminous zone and non-light-emitting area, improve the light distribution between luminous zone and non-light-emitting area by the design of described V-CUT groove 11, the quantity of minimizing light source that therefore can be suitable, saves the energy.
In other embodiments, as different from Example 1, the angle at described V-CUT angle 12 can also be set as 90 ° or 150 °, the light distribution of light guide plate incident side can be improved equally, the light angle that incidence surface is received is different, it is less that the light distribution Wave crest and wave trough of incidence surface becomes otherness, weakens the phenomenon of the bright dark inequality of incident side.
A kind of side entrance back module of the present invention, has following beneficial effect:
1. a kind of side entrance back module of the present invention is provided with concave inward structure at the incidence surface of light guide plate, to be reflected and reflect by curved surface to light, makes light distribution even, effectively reduces the problem of bright dark inequality, improve the taste of incidence surface.
2. the V-CUT groove middle part of a kind of side entrance back module of the present invention is provided with V-CUT angle, can weaken the light intensity directly over light source.
3. a kind of side entrance back module of the present invention carries out microstructure process to light guide plate, and without the need to increasing other servicing units, structure is simple, reasonable in design, cost is lower, improves the light distribution of light guide plate incident side, weaken the phenomenon of the bright dark inequality of incident side, the luminescence efficiency of efficiency utilization LED.
4. a kind of side entrance back module of the present invention is owing to improving the light distribution between luminous zone and non-light-emitting area, the quantity of minimizing light source that therefore can be suitable, saves the energy.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (9)
1. a side entrance back module, it is characterized in that, comprise light guide plate (1) and light source (2), described light guide plate (1) has V-CUT groove (11), described V-CUT groove (11) is arranged on the incidence surface of described light guide plate (1), the quantity of described V-CUT groove (11) is one or more, and described light source (2) is oppositely arranged with the incidence surface of described light guide plate (1).
2. side entrance back module according to claim 1, it is characterized in that, described V-CUT groove (11) is concave inward structure, described V-CUT groove (11) middle part is provided with a projection, and the top of described projection is towards the opening direction of described V-CUT groove (11).
3. side entrance back module according to claim 2, is characterized in that, described in described V-CUT groove (11), the side of protruding both sides is arcwall face.
4. side entrance back module according to claim 3, is characterized in that, described projection is that " V " font is protruding, and in described " V " font projection, two sides of " V " character form structure form V-CUT angle (12).
5. side entrance back module according to claim 4, is characterized in that, the angular range of described V-CUT angle (12) is 60 ° ~ 150 °.
6. the side entrance back module according to claim 2,3,4 or 5, it is characterized in that, described light source (2) and one_to_one corresponding identical with the quantity of described V-CUT groove (11), each V-CUT groove (11) and corresponding light source (2), just to setting, have interval between adjacent V-CUT groove (11).
7. side entrance back module according to claim 6, is characterized in that, described light source (2) is LED.
8. side entrance back module according to claim 7, is characterized in that, described light source (2) is fixedly mounted on lamp bar (3), and described lamp bar (3) is parallel to the incidence surface of described light guide plate (1).
9. side entrance back module according to claim 8, is characterized in that, described light source (2) linearly distributes on described lamp bar (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828479.2A CN105334664A (en) | 2015-11-25 | 2015-11-25 | Side fed backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828479.2A CN105334664A (en) | 2015-11-25 | 2015-11-25 | Side fed backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105334664A true CN105334664A (en) | 2016-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510828479.2A Pending CN105334664A (en) | 2015-11-25 | 2015-11-25 | Side fed backlight module |
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| Country | Link |
|---|---|
| CN (1) | CN105334664A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145704A (en) * | 2018-02-13 | 2019-08-20 | 致伸科技股份有限公司 | Backlight module |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1667466A (en) * | 2004-03-11 | 2005-09-14 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN202362487U (en) * | 2011-09-06 | 2012-08-01 | 青岛海信电器股份有限公司 | Light guide plate, backlight module, and display device |
| CN202546445U (en) * | 2012-03-09 | 2012-11-21 | 京东方科技集团股份有限公司 | Light mixing strip, line light source assembly, backlight source and liquid crystal display device |
| CN202815259U (en) * | 2012-10-15 | 2013-03-20 | 京东方科技集团股份有限公司 | Light guide plate, backlight module and display device |
| CN103175033A (en) * | 2013-03-25 | 2013-06-26 | 南京中电熊猫液晶显示科技有限公司 | Side light source light-emitting diode (LED) backlight module |
-
2015
- 2015-11-25 CN CN201510828479.2A patent/CN105334664A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1667466A (en) * | 2004-03-11 | 2005-09-14 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN202362487U (en) * | 2011-09-06 | 2012-08-01 | 青岛海信电器股份有限公司 | Light guide plate, backlight module, and display device |
| CN202546445U (en) * | 2012-03-09 | 2012-11-21 | 京东方科技集团股份有限公司 | Light mixing strip, line light source assembly, backlight source and liquid crystal display device |
| CN202815259U (en) * | 2012-10-15 | 2013-03-20 | 京东方科技集团股份有限公司 | Light guide plate, backlight module and display device |
| CN103175033A (en) * | 2013-03-25 | 2013-06-26 | 南京中电熊猫液晶显示科技有限公司 | Side light source light-emitting diode (LED) backlight module |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145704A (en) * | 2018-02-13 | 2019-08-20 | 致伸科技股份有限公司 | Backlight module |
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| PB01 | Publication | ||
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Application publication date: 20160217 |