CN109212828A - Liquid crystal television backlight module capable of improving light utilization rate - Google Patents
Liquid crystal television backlight module capable of improving light utilization rate Download PDFInfo
- Publication number
- CN109212828A CN109212828A CN201811158625.5A CN201811158625A CN109212828A CN 109212828 A CN109212828 A CN 109212828A CN 201811158625 A CN201811158625 A CN 201811158625A CN 109212828 A CN109212828 A CN 109212828A
- Authority
- CN
- China
- Prior art keywords
- light
- backlight module
- backlight
- light guide
- diffuser 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.)
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Links
- 239000004973 liquid crystal related substance Substances 0.000 title abstract description 8
- 238000009792 diffusion process Methods 0.000 abstract description 8
- 239000003292 glue Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000005142 aphototropism Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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
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
本发明涉及背光模组技术领域，具体涉及一种能提高光线利用率的液晶电视背光模组，其结构包括背框、设置于背框内的由多个发光源排列组成的背光源、设置于背光源一侧的导光副板、设置于导光副板上的导光主板、设置于导光主板上的扩散板、以及设置于背框上的胶框；导光副板的上表面由若干个依次排列的第一弧形凸面拼接而成；扩散板包括入光面和出光面，扩散板的出光面由若干个依次排列的第二弧形凸面拼接而成。当光线从背光源射入时，部分光线会经由导光副板的第一弧形凸面发生绕射作用后再射入导光主板，另光线进入出光面由第二弧形凸面拼接而成的扩散板后能够在出光面处发生绕射作用射出扩散板，能够降低光能的损耗，提高光线利用率。
The present invention relates to the technical field of backlight modules, and in particular to a backlight module for a liquid crystal television capable of improving light utilization, wherein the structure comprises a back frame, a backlight source composed of a plurality of light sources arranged in the back frame, a light guide sub-plate arranged on one side of the backlight source, a light guide main board arranged on the light guide sub-plate, a diffusion plate arranged on the light guide main board, and a rubber frame arranged on the back frame; the upper surface of the light guide sub-plate is formed by splicing a plurality of first arc-shaped convex surfaces arranged in sequence; the diffusion plate comprises a light incident surface and a light exiting surface, and the light exiting surface of the diffusion plate is formed by splicing a plurality of second arc-shaped convex surfaces arranged in sequence. When light enters from the backlight source, part of the light will be diffracted by the first arc-shaped convex surface of the light guide sub-plate and then enter the light guide main board, and the other light will be diffracted at the light exiting surface after entering the diffusion plate whose light exiting surface is formed by splicing the second arc-shaped convex surfaces and then exit the diffusion plate, thereby reducing the loss of light energy and improving light utilization.
Description
Technical field
The present invention relates to back light model setting technology fields, and in particular to a kind of LCD TV backlight that can improve light utilization
Mould group.
Background technique
The structure of liquid crystal display device includes liquid crystal display panel and backlight module.Liquid crystal display panel itself does not shine, need by
The light source that backlight module provides normally shows image, and therefore, backlight module becomes one of the key component of liquid crystal display device.
Different according to the incidence of light source, backlight module can be divided into down straight aphototropism mode set and side entrance back module.Wherein, side
Entering formula backlight module is the back plate edges that backlight LED lamp bar is set to liquid crystal display panel side rear, the light that LED light bar issues
Enter light guide plate from the incidence surface of light guide plate side, is projected after reflection and diffusion from light guide plate light-emitting surface, then via optical film
Piece group is supplied to liquid crystal display panel to form area source.
LCD TV backlight mould group in the prior art, light source are usually to be scattered diffusion via diffuser plate.So
And in the prior art, when the light that light source issues is projected after diffuser plate by the light-emitting surface of diffuser plate, since light is by rolling over
It penetrates the biggish diffuser plate of rate to enter in the lesser air dielectric of refractive index, therefore, can spread into the part light after diffuser plate
It is totally reflected at the light-emitting surface of plate, and causes the part light that cannot project diffuser plate, and then lead to the light transmittance of diffuser plate
Decline, that is, cause light utilization lower.
Summary of the invention
For the prior art there are above-mentioned technical problem, the present invention provides a kind of LCD TV that can improve light utilization
Backlight module.
To achieve the above object, the present invention the following technical schemes are provided:
A kind of LCD TV backlight mould group that can improve light utilization is provided, including back frame, is set in the back frame
The backlight rearranged by multiple light emitting sources, the guide-lighting subplate for being set to the backlight side, be set to the leaded light
Guide-lighting mainboard, the diffuser plate being set on the guide-lighting mainboard on subplate and the glue frame being set in the back frame；
The upper surface of the leaded light subplate is spliced by the first arc convex that several are arranged successively；
The diffuser plate includes incidence surface and light-emitting surface, the light-emitting surface of the diffuser plate be arranged successively by several second
Arc convex is spliced.
First arc convex is set as the first half rounded convex.
The radius of the first half rounded convex is set as 1mm~5mm.
Preferably, the radius of the first half rounded convex is set as 3mm.
Second arc convex is set as the second half rounded convex.
The radius of the second half rounded convex is set as 1mm~5mm.
Preferably, the radius of the second half rounded convex is set as 3mm.
The backlight is set as linear backlight source.
The diffuser plate is diffuser plate made of PET plastic.
Beneficial effects of the present invention:
(1) a kind of LCD TV backlight mould group that can improve light utilization of the invention, including back frame, it is set to back frame
The interior backlight rearranged by multiple light emitting sources, is set on guide-lighting subplate the guide-lighting subplate for being set to backlight side
Guide-lighting mainboard, the diffuser plate being set on guide-lighting mainboard and the glue frame being set in back frame；The upper surface of guide-lighting subplate by
Several first arc convex being arranged successively are spliced；Diffuser plate includes incidence surface and light-emitting surface, the light-emitting surface of diffuser plate
It is spliced by the second arc convex that several are arranged successively.Due to being provided with guide-lighting subplate, the upper surface of guide-lighting subplate by
Several first arc convex being arranged successively are spliced, and when light is injected from backlight, some light can be via leaded light
First arc convex of subplate injects guide-lighting mainboard after diffraction occurs again, thereby reduces the loss of luminous energy, greatly improves
Light utilization.In addition, the light-emitting surface due to diffuser plate is spliced by the second arc convex that several are arranged successively, into
And diffraction can occur after making light enter diffuser plate at light-emitting surface and project diffuser plate, and then further reduced light
The loss of energy, further increases light utilization.
(2) a kind of LCD TV backlight mould group that can improve light utilization of the invention has structure simple, is produced into
This is low, and is suitble to the characteristics of being mass produced.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of LCD TV backlight mould group that can improve light utilization of the invention.
Appended drawing reference:
Back frame 1；
Backlight 2；
Guide-lighting subplate 3, the first arc convex 31；
Guide-lighting mainboard 4；
Diffuser plate 5, incidence surface 51, light-emitting surface 52, the second arc convex 501；
Glue frame 6.
Specific embodiment
Below in conjunction with specific embodiments and drawings, the present invention is described in detail.
Embodiment 1.
A kind of LCD TV backlight mould group that can improve light utilization of the present embodiment, as shown in Figure 1, include back frame 1,
The backlight 2 rearranged by multiple light emitting sources that is set in back frame 1, is set the guide-lighting subplate 3 for being set to 2 side of backlight
The guide-lighting mainboard 4 being placed on guide-lighting subplate 3, the diffuser plate 5 being set on guide-lighting mainboard 4 and the glue frame being set in back frame 1
6；Wherein, the upper surface of guide-lighting subplate 3 is spliced by the first arc convex 31 that several are arranged successively；Wherein, diffuser plate 5
Including incidence surface 51 and light-emitting surface 52, the light-emitting surface 52 of diffuser plate 5 is spliced by the second arc convex 501 that several are arranged successively
It forms.Due to being provided with guide-lighting subplate 3, the upper surface of guide-lighting subplate 3 is spelled by the first arc convex 31 that several are arranged successively
It connects, when light is injected from backlight 2, via the first arc convex 31 of guide-lighting subplate 3 diffraction can occur for some light
Guide-lighting mainboard 4 is injected after effect again, the loss of luminous energy is thereby reduced, substantially increases light utilization.In addition, due to diffusion
The light-emitting surface 52 of plate 5 is spliced by the second arc convex 501 that several are arranged successively, so that light enters diffuser plate
Diffraction can occur after 5 at light-emitting surface 52 and project diffuser plate, and then further reduced the loss of luminous energy, further mention
Bloom line use ratio.
In the present embodiment, the first arc convex 31 is set as the first half rounded convex, is set as the first of the first half rounded convex
Arc convex 31 can equably make some light diffraction can occur via the first arc convex 31 of guide-lighting subplate 3
It injects guide-lighting mainboard 4 again afterwards, can be avoided light brightness unevenness while improving light utilization in the loss for reducing luminous energy.
In the present embodiment, the radius of the first half rounded convex is set as 3mm.The first half rounded convex of the radius can be equably
So that some light injects guide-lighting mainboard 4 after diffraction occurring via the first arc convex 31 of guide-lighting subplate 3 again, dropping
The loss of low luminous energy can be avoided light brightness unevenness while improving light utilization.
In the present embodiment, the second arc convex 501 is set as the second half rounded convex, is set as the second of the second half rounded convex
Diffraction can occur at light-emitting surface 52 and project diffuser plate for arc convex 501 after enabling to light to enter diffuser plate 5, into
And further reduced the loss of luminous energy, further increase light utilization.
In the present embodiment, the radius of the second half rounded convex 501 is set as 3mm.The second half rounded convex 501 of the radius can
So that after entering diffuser plate 5 diffraction injection diffuser plate can occur at light-emitting surface 52 for light, and then further reduced
The loss of luminous energy, further increases light utilization.
In the present embodiment, backlight 2 is set as linear backlight source.
In the present embodiment, diffuser plate 5 is diffuser plate 5 made of PET plastic, enables to be scattered out by diffuser plate 5
Light more uniformization, and the loss of luminous energy can be further reduced, further increase light utilization.
Embodiment 2.
A kind of embodiment 2 of LCD TV backlight mould group that can improve light utilization of the invention, the present embodiment and reality
Apply example 1 the difference is that, in the present embodiment, in the present embodiment, the radius of the first half rounded convex is set as 1mm, the radius
The first half rounded convex can equably some light diffraction can occur via the first arc convex 31 of guide-lighting subplate 3 to make
Inject guide-lighting mainboard 4 again after, in the loss for reducing luminous energy, while improving light utilization, can be avoided light it is bright it is dark not
?.In the present embodiment, the radius of the second half rounded convex 501 is set as 1mm, and the second half rounded convex 501 of the radius enable to
After entering diffuser plate 5 diffraction injection diffuser plate can occur at light-emitting surface 52 for light, and then further reduced luminous energy
Loss, further increase light utilization.The other structures and working principle of the present embodiment are same as Example 1, herein not
It repeats again.
Embodiment 3.
A kind of embodiment 2 of LCD TV backlight mould group that can improve light utilization of the invention, the present embodiment and reality
Apply example 1 the difference is that, in the present embodiment, in the present embodiment, the radius of the first half rounded convex is set as 5mm, the radius
The first half rounded convex can equably some light diffraction can occur via the first arc convex 31 of guide-lighting subplate 3 to make
Inject guide-lighting mainboard 4 again after, in the loss for reducing luminous energy, while improving light utilization, can be avoided light it is bright it is dark not
?.In the present embodiment, the radius of the second half rounded convex 501 is set as 5mm, and the second half rounded convex 501 of the radius enable to
After entering diffuser plate 5 diffraction injection diffuser plate can occur at light-emitting surface 52 for light, and then further reduced luminous energy
Loss, further increase light utilization.The other structures and working principle of the present embodiment are same as Example 1, herein not
It repeats again.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811158625.5A CN109212828A (en) | 2018-09-30 | 2018-09-30 | Liquid crystal television backlight module capable of improving light utilization rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811158625.5A CN109212828A (en) | 2018-09-30 | 2018-09-30 | Liquid crystal television backlight module capable of improving light utilization rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109212828A true CN109212828A (en) | 2019-01-15 |
Family
ID=64982709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811158625.5A Pending CN109212828A (en) | 2018-09-30 | 2018-09-30 | Liquid crystal television backlight module capable of improving light utilization rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109212828A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003270415A (en) * | 2002-03-13 | 2003-09-25 | Taisei Laminator Co Ltd | Light reflection sheet and planar light source device using light reflection sheet |
| CN1549027A (en) * | 2003-05-21 | 2004-11-24 | 力捷电脑股份有限公司 | Sidelight type back light module and liquid crystal display device |
| CN1580890A (en) * | 2003-08-03 | 2005-02-16 | 鸿富锦精密工业（深圳）有限公司 | Back light assembly |
| CN102411165A (en) * | 2010-07-23 | 2012-04-11 | 颖台科技股份有限公司 | Light guide device, backlight module and liquid crystal display with the light guide device |
| CN102865524A (en) * | 2012-10-12 | 2013-01-09 | 深圳市华星光电技术有限公司 | Backlight module |
| CN104813097A (en) * | 2013-11-01 | 2015-07-29 | 古河电气工业株式会社 | Light reflection plate for light-type backlight,backlight for liquid crystal display,and production method for light reflection plate for edge light-type backlight |
| CN107561777A (en) * | 2017-08-30 | 2018-01-09 | 广东深越光电技术有限公司 | A backlight module capable of avoiding uneven brightness and darkness and its manufacturing process |
| CN107561778A (en) * | 2017-08-30 | 2018-01-09 | 广东深越光电技术有限公司 | Liquid crystal display module capable of generating wide-viewing-angle effect |
| CN207249299U (en) * | 2017-08-30 | 2018-04-17 | 广东深越光电技术有限公司 | A backlight module capable of effectively preventing light leakage and display device thereof |
-
2018
- 2018-09-30 CN CN201811158625.5A patent/CN109212828A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003270415A (en) * | 2002-03-13 | 2003-09-25 | Taisei Laminator Co Ltd | Light reflection sheet and planar light source device using light reflection sheet |
| CN1549027A (en) * | 2003-05-21 | 2004-11-24 | 力捷电脑股份有限公司 | Sidelight type back light module and liquid crystal display device |
| CN1580890A (en) * | 2003-08-03 | 2005-02-16 | 鸿富锦精密工业（深圳）有限公司 | Back light assembly |
| CN102411165A (en) * | 2010-07-23 | 2012-04-11 | 颖台科技股份有限公司 | Light guide device, backlight module and liquid crystal display with the light guide device |
| CN102865524A (en) * | 2012-10-12 | 2013-01-09 | 深圳市华星光电技术有限公司 | Backlight module |
| CN104813097A (en) * | 2013-11-01 | 2015-07-29 | 古河电气工业株式会社 | Light reflection plate for light-type backlight,backlight for liquid crystal display,and production method for light reflection plate for edge light-type backlight |
| CN107561777A (en) * | 2017-08-30 | 2018-01-09 | 广东深越光电技术有限公司 | A backlight module capable of avoiding uneven brightness and darkness and its manufacturing process |
| CN107561778A (en) * | 2017-08-30 | 2018-01-09 | 广东深越光电技术有限公司 | Liquid crystal display module capable of generating wide-viewing-angle effect |
| CN207249299U (en) * | 2017-08-30 | 2018-04-17 | 广东深越光电技术有限公司 | A backlight module capable of effectively preventing light leakage and display device thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190115 |