CN1746741A - High brightness backlight module - Google Patents
High brightness backlight module Download PDFInfo
- Publication number
- CN1746741A CN1746741A CN 200410074643 CN200410074643A CN1746741A CN 1746741 A CN1746741 A CN 1746741A CN 200410074643 CN200410074643 CN 200410074643 CN 200410074643 A CN200410074643 A CN 200410074643A CN 1746741 A CN1746741 A CN 1746741A
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- light
- guide plate
- light guide
- plate
- reflecting
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- 238000009792 diffusion process Methods 0.000 claims abstract description 5
- 238000004020 luminiscence type Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The invention provides a high-brightness backlight module, which comprises a diffusion plate, a light guide plate, a reflecting plate and a light source, wherein the light guide plate is provided with a light incident surface, a light emergent surface facing the diffusion plate, a bottom surface opposite to the light emergent surface, a plurality of prism strips which are arranged on the light emergent surface at intervals and parallel to a first direction, and a plurality of reflecting parts which are respectively arranged on the bottom surface corresponding to the prism strips along the first direction, the reflecting parts are generally conical and respectively provided with a first curved surface protruding towards the light incident surface and a second curved surface protruding away from the light incident surface, the included angle between the first curved surface and the second curved surface of each reflecting part in the first direction is not less than 120 degrees, the reflecting plate is provided with a top surface facing the light guide plate and a plurality of prism strips which are arranged on the top surface and parallel to a second direction, and the second direction is mutually vertical to the first direction, and the light source is arranged at the side adjacent to the light incident surface of the light guide plate and can emit light into the light incident surface.
Description
Technical field
The present invention relates to a kind of backlight module, particularly relate to a kind of simply constructed high-brilliance light-negative module.
Background technology
As shown in Figure 1, 2, a kind of backlight module comprises the light-collecting piece 5,6 (or claiming prismatic lens) that diffuser plate 4, two that reflecting plate 3, that light source 2, that a light guide plate 1, is arranged at this light guide plate 1 side is arranged at this light guide plate 1 below is arranged at this light guide plate 1 top is arranged at these diffuser plate 4 tops in the prior art, and a diffuser plate 7 that is arranged at these light-collecting piece 6 tops.This light guide plate 1 is passed to opposite opposite side by the light that total reflection principle can penetrate this light source 2 by this light guide plate 1 one sides guiding, and for the exiting surface 101 that light can be changeed by this light guide plate 1 penetrates to form area source, the bottom surface of this light guide plate 1 generally can be printed with a plurality of reflections site, in order to destroy light total reflection path, and the formation scattering makes a light part be reflected this exiting surface 101.This reflecting plate 3 can be reflected into the light that reflects from this light guide plate 1 bottom surface in this light guide plate 1 again, to improve the utilization factor of light.The light that this diffuser plate 4 can penetrate the exiting surface 101 from this light guide plate 1 diffuses to this light-collecting piece 5,6 equably.This light-collecting piece 5,6 respectively has the prism structure that a plurality of intervals are provided with, and the direction that is provided with of the structure of the prism on this light-collecting piece 5,6 is generally to be orthogonal, so, after light passes this light-collecting piece 5,6, this light-collecting piece 5,6 can be concentrated on light on the predetermined direction by this prism structure, and make light can pass this diffuser plate 7 in a predetermined direction, and then diffuse to a LCD panel (figure does not show) equably.
Though, this backlight module finally can be transformed into area source with the light of this light source 2 and be projected to this LCD panel, but, this backlight module is in order to improve the irradiant briliancy of this light guide plate 1, two light-collecting pieces 5 of essential use, 6 revise the optically focused direction of light, so, not only can increase taking up room of this backlight module, and can increase component count and improve production cost, in addition, because light must transmit at the interface of numerous inter-modules, therefore light also can be more in the order of reflection at interface, thereby can cause the loss of light ray energy and influence irradiant intensity, again, owing to this light guide plate 1 bottom surface is to destroy opticpath with reflector net point to cause scattering phenomenon, therefore, though have part light to be reflected this exiting surface 101, but most of light slatterns because of scattering, causes the luminescence efficiency of exiting surface 101 of this light guide plate 1 not good.
As shown in Figure 3, for improving the too much disappearance of said modules, just the someone proposes another kind of backlight module, comprise reflecting plate 3, that light source 2, that light guide plate 8, that an end face has the prism structure that a plurality of intervals are provided with is arranged at these light guide plate 8 sides is arranged at these light guide plate 8 belows and be arranged at the contrary light-collecting piece 9 that these light guide plate 8 tops and bottom surface have the prism structure that a plurality of intervals are provided with, and one is arranged at this diffuser plate 7 against light-collecting piece 9 tops.Though, this kind backlight module is constructed and the purpose that should also can reach correction light optically focused direction against the collocation that the prism of light-collecting piece 9 is constructed by the prism of this light guide plate 8, and backlight module that can be more above-mentioned reduces the setting of a slice light-collecting piece and a slice diffuser plate, but, this kind backlight module still need be provided with this contrary light-collecting piece 9, therefore, it still has component count more and can take up room and increase production cost and light ray energy through repeatedly transmitting and the too much problem of loss, and this light guide plate 8 also still has the setting because of the reflection site to cause the not good problem of luminescence efficiency.
Summary of the invention
The object of the present invention is to provide a kind of simple structure and do not take up space also can reduce production costs, and can reduce energy loss and the high-brilliance light-negative module that improves luminescence efficiency.
High-brilliance light-negative module of the present invention, comprise a diffuser plate, one light guide plate, one reflecting plate, an and light source, be characterized in: this light guide plate has an incidence surface, one exiting surface towards this diffuser plate, one bottom surface in contrast to this exiting surface, several are parallel to a first direction in fact and the compartment of terrain is arranged at the prism bar on this exiting surface, and several are respectively to should prism bar and be arranged at reflecting part on this bottom surface along this first direction, this reflecting part generally is taper, and respectively have the first surface and that one day, this incidence surface protruded and deviate from second curved surface that this incidence surface protrudes, and each reflecting part on this first direction first, angle between two curved surfaces is to be not less than 120 degree.This reflecting plate has an end face towards this light guide plate, and several are parallel to a second direction in fact and are arranged at prism bar on this end face, and this second direction and this first direction are orthogonal in fact.This light source is to be arranged at the adjacent side of incidence surface of this light guide plate and light can be injected this incidence surface.
Reflecting part in the high-brilliance light-negative module of the present invention on the bottom surface of light guide plate is to be by dredging to close distribution on the first direction away from this incidence surface.
Technique effect of the present invention is a simple structure and not taking up space not only, and can reduce production costs, more can be by the design of reflecting part improving luminescence efficiency, and the insufficient light place of compensation light guide plate and light can on average be penetrated, so so can reach the purpose of invention really.
Description of drawings
Fig. 1 is the exploded perspective synoptic diagram of a kind of backlight module in the prior art;
Fig. 2 is the schematic side view of backlight module of the present invention;
Fig. 3 is the exploded perspective synoptic diagram of the another kind of backlight module in the prior art;
Fig. 4 is the exploded perspective synoptic diagram of high-brilliance light-negative module one preferred embodiment of the present invention;
Fig. 5 is the schematic side view of preferred embodiment of the present invention;
Fig. 6 is the elevational schematic view of a light guide plate of preferred embodiment of the present invention.
Embodiment
The present invention is described in detail below in conjunction with drawings and Examples:
About aforementioned and other technology contents, characteristics and effect of the present invention, in a preferred embodiment of following conjunction with figs., describe in detail.
Consult Fig. 4,5, the preferred embodiment of high-brilliance light-negative module of the present invention comprises: a diffuser plate 10, a light guide plate 20, a reflecting plate 30, and a light source 40.
This diffuser plate 10 is to be arranged at this light guide plate 20 tops.
This light guide plate 20 has incidence surface 21, an exiting surface 22 towards this diffuser plate 10, the bottom surface 23 in contrast to this exiting surface 22 that can inject for light, several are parallel to a first direction X in fact and the compartment of terrain is arranged at the prism bar 24 on this exiting surface 22, and several are respectively to should prism bar 24 and be arranged at reflecting part 25 on this bottom surface 23 along this first direction X.Cooperate and consult Fig. 6, in the present embodiment, this reflecting part 25 is to be integrally formed at also generally to be the quadrangular pyramid shape on this bottom surface 23, and this reflecting part 25 is to be by dredging to close non-equi-spaced apart distribution shape on the first direction X away from this incidence surface 21, this reflecting part 25 respectively has the first surface 251 and that one day, this incidence surface 21 protruded and deviates from second curved surface 252 that this incidence surface 21 protrudes again, and the angle of 251,252 on each reflecting part 25 first and second curved surface on this first direction X is to be not less than 120 degree.
This reflecting plate 30 has an end face 31 towards this light guide plate 20, and several are parallel to a second direction Y in fact and are arranged at prism bar 32 on this end face 31, and this second direction Y and this first direction X are orthogonal in fact.
This light source 40 is to be arranged at the incidence surface 21 adjacent sides of this light guide plate 20 and can to launch light into this incidence surface 21.
Whereby, as shown in Figure 5, the light of being launched when this light source 40 enters and transmits when advancing in this light guide plate 20, in case touching this reflecting part 25, light promptly can destroy the total reflection path, and owing to first of this reflecting part 25, two curved surfaces 251,252 angle is not less than first of 120 degree and this reflecting part 25, two curved surfaces 251, the 252nd, be smooth shape, so the former light big city that touches this reflecting part 25 directly touches this second curved surface 252 and is reflected upwards, to penetrate this exiting surface 22 (according to inventor's actual tests, this reflecting part 25 can up reflect the light more than 70%).In addition, though transmitting the light intensity that advances in this light guide plate 20 can weaken along with the increase of transmission range, but, because this reflecting part 25 is to be by dredging to close non-equi-spaced apart distribution shape on the first direction X away from this incidence surface 21, therefore, can compensate this light guide plate 20 at back section insufficient light partly, and make the light in this light guide plate 20 can penetrate this exiting surface 22 fifty-fifty, to revise picture quality away from this incidence surface 21.
Moreover, when the light in this light guide plate 20 when this prism bar 24 is passed in 25 reflections of this reflecting part, collocation by this reflecting part 25 and this prism bar 24 also can make light pass this diffuser plate 10 in a predetermined direction, and then diffuses to a LCD panel (figure does not show) equably.
In addition, when unreflected light in this light guide plate 20 reflects to the prism bar 32 of this reflecting plate 30 from this bottom surface 23, this prism bar 32 can will penetrate towards this diffuser plate 10 in this light guide plate 20 of light reflected back and through this prism bar 24, so, collocation by the prism bar 32 of this reflecting plate 30 and the prism bar 24 of this light guide plate 20 also can make light pass this diffuser plate 10 in a predetermined direction, and then diffuses to this LCD panel (figure does not show) equably.
Via above explanation, can again advantage of the present invention be summarized as follows:
One, the present invention is formed with this prism bar 24,32 respectively on this light guide plate 20 and this reflecting plate 30, therefore, first kind of backlight module of the present invention and prior art compared, except the setting that can reduce a slice diffusion sheet, the present invention more can need not be provided with light-collecting piece fully, and second kind of backlight module compared in the present invention and the prior art, the present invention also can reduce the setting of the contrary light-collecting piece of a slice, therefore, the present invention is simple structure and can not taking up room not only, also can effectively reduce production costs because of the minimizing of assembly.Moreover, simple element of the present invention, therefore, light of the present invention can promptly penetrate after transmitting through minimum interface to this LCD panel (figure does not show), and can effectively reduce the loss of light ray energy.
Two, because the angle between first and second curved surface 251,252 of reflecting part 25 of the present invention is to be not less than 120 degree, and first and second curved surface the 251, the 252nd of this reflecting part 25 is smooth shape, and after can making that these light guide plate 20 interior light are met this reflecting part 25, mostly directly reflection appears this exiting surface 21, and can not be transmitted to this reflecting plate 30 again, therefore, the present invention can reduce interface conversion loss, and can improve the light usability, with effective raising luminescence efficiency, the panel briliancy is increased.
Three, reflecting part 25 of the present invention is to be by dredging to close non-equi-spaced apart distribution shape on the first direction X away from this incidence surface 21, therefore, can compensate this light guide plate 20 at back section insufficient light partly away from this incidence surface 21, and make the light in this light guide plate 20 can penetrate this exiting surface 22 fifty-fifty, to revise picture quality.
Four, reflecting plate 30 of the present invention is provided with this prism bar 32, when the light in this light guide plate 20 penetrates to the prism bar 32 of this reflecting plate 30 from this bottom surface 23, this prism bar 32 can will penetrate towards this diffuser plate 10 in this light guide plate 20 of light reflected back and through this prism bar 24, therefore, the present invention can suitably revise the light that penetrated this light guide plate 20 and concentrate, so that effectively utilize light.
Conclude above-mentioned, high-brilliance light-negative module of the present invention, not only simple structure and not taking up space, and can reduce production costs, more can be by the design of reflecting part improving luminescence efficiency, and the insufficient light place of compensation light guide plate and light can on average be penetrated, so so can reach the purpose of invention really.
The foregoing description is preferred embodiment of the present invention, can not limit protection scope of the present invention with this, and promptly all the scope of claim and simple equivalent that description is done change and modify according to the present invention, still all in the scope that the present invention is contained.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410074643 CN1746741A (en) | 2004-09-10 | 2004-09-10 | High brightness backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410074643 CN1746741A (en) | 2004-09-10 | 2004-09-10 | High brightness backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1746741A true CN1746741A (en) | 2006-03-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410074643 Pending CN1746741A (en) | 2004-09-10 | 2004-09-10 | High brightness backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1746741A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7927003B2 (en) | 2007-10-12 | 2011-04-19 | Industrial Technology Research Institute | Light guide plate with micro-structured reflective film and light-emitting apparatus |
| CN102192450A (en) * | 2011-05-31 | 2011-09-21 | 中航华东光电有限公司 | Backlight module and liquid crystal display device |
| CN102620212A (en) * | 2012-04-10 | 2012-08-01 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN102889505A (en) * | 2011-07-19 | 2013-01-23 | 奇美电子股份有限公司 | Multi-zone dynamic backlight module |
| CN103472523A (en) * | 2013-04-30 | 2013-12-25 | 瑞仪光电股份有限公司 | Light guide device and backlight module with same |
| CN105044875A (en) * | 2015-08-05 | 2015-11-11 | 苏州华徕光电仪器有限公司 | Stagger-sleeve-type reflection prism adjustment base |
| CN105044807A (en) * | 2015-08-05 | 2015-11-11 | 苏州华徕光电仪器有限公司 | High-reflection-performance surveying and mapping prism |
| CN105158833A (en) * | 2015-10-16 | 2015-12-16 | 京东方科技集团股份有限公司 | Composite reflector plate, backlight source, and display device |
| CN105276444A (en) * | 2014-06-25 | 2016-01-27 | 乐金显示有限公司 | Curved surface backlight unit and curved surface display device including the same |
| CN106195727A (en) * | 2014-12-09 | 2016-12-07 | 扬升照明股份有限公司 | Light source module |
| WO2019184538A1 (en) * | 2018-03-30 | 2019-10-03 | 京东方科技集团股份有限公司 | Backlight module and method for manufacturing same, and liquid crystal display apparatus |
-
2004
- 2004-09-10 CN CN 200410074643 patent/CN1746741A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7927003B2 (en) | 2007-10-12 | 2011-04-19 | Industrial Technology Research Institute | Light guide plate with micro-structured reflective film and light-emitting apparatus |
| CN102192450A (en) * | 2011-05-31 | 2011-09-21 | 中航华东光电有限公司 | Backlight module and liquid crystal display device |
| CN102192450B (en) * | 2011-05-31 | 2014-04-09 | 中航华东光电有限公司 | Backlight module and liquid crystal display device |
| CN102889505B (en) * | 2011-07-19 | 2014-12-31 | 群创光电股份有限公司 | Multi-region dynamic backlight module |
| CN102889505A (en) * | 2011-07-19 | 2013-01-23 | 奇美电子股份有限公司 | Multi-zone dynamic backlight module |
| CN102620212A (en) * | 2012-04-10 | 2012-08-01 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN103472523B (en) * | 2013-04-30 | 2016-06-08 | 瑞仪光电股份有限公司 | Light guide device and backlight module with same |
| US20140321163A1 (en) * | 2013-04-30 | 2014-10-30 | Radiant Opto-Electronics Corporation | Light guide device and backlight module containing the same |
| CN103472523A (en) * | 2013-04-30 | 2013-12-25 | 瑞仪光电股份有限公司 | Light guide device and backlight module with same |
| CN105911632A (en) * | 2013-04-30 | 2016-08-31 | 瑞仪光电股份有限公司 | Light guide device and backlight module |
| CN105911632B (en) * | 2013-04-30 | 2019-03-01 | 瑞仪光电股份有限公司 | Light guide device and backlight module |
| CN105276444A (en) * | 2014-06-25 | 2016-01-27 | 乐金显示有限公司 | Curved surface backlight unit and curved surface display device including the same |
| CN105276444B (en) * | 2014-06-25 | 2017-12-08 | 乐金显示有限公司 | Curved surface back light unit and the curved-surface display device for including the curved surface back light unit |
| CN106195727A (en) * | 2014-12-09 | 2016-12-07 | 扬升照明股份有限公司 | Light source module |
| CN105044875A (en) * | 2015-08-05 | 2015-11-11 | 苏州华徕光电仪器有限公司 | Stagger-sleeve-type reflection prism adjustment base |
| CN105044807A (en) * | 2015-08-05 | 2015-11-11 | 苏州华徕光电仪器有限公司 | High-reflection-performance surveying and mapping prism |
| CN105044807B (en) * | 2015-08-05 | 2018-03-20 | 苏州华徕光电仪器有限公司 | High reflectivity can survey and draw prism |
| CN105158833A (en) * | 2015-10-16 | 2015-12-16 | 京东方科技集团股份有限公司 | Composite reflector plate, backlight source, and display device |
| WO2019184538A1 (en) * | 2018-03-30 | 2019-10-03 | 京东方科技集团股份有限公司 | Backlight module and method for manufacturing same, and liquid crystal display apparatus |
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