CN104154464A - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
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- CN104154464A CN104154464A CN201410367116.9A CN201410367116A CN104154464A CN 104154464 A CN104154464 A CN 104154464A CN 201410367116 A CN201410367116 A CN 201410367116A CN 104154464 A CN104154464 A CN 104154464A
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- reflection groove
- led lamp
- backlight module
- lamp source
- reflecting
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Abstract
The invention relates to the technical field of area control display, and discloses a backlight module and a display device. The backlight module comprises a back board, a reflector and a plurality of LED lamp sources. The reflector is positioned on the side, which faces a display panel of the display device, of the back board, a plurality of reflecting grooves which are distributed to form an array are formed in the reflector, an opening of each reflecting groove faces a light emergent side of the backlight module, and a reflecting surface is formed at the bottom of each reflecting groove; the LED lamp sources are in one-to-one correspondence to the reflecting grooves; the LED lamp source of each corresponding LED lamp source and reflecting groove pair is mounted on a first side wall of the reflecting groove of the corresponding LED lamp source and reflecting groove pair, and angles which are formed between the corresponding reflecting surface and a light incident surface of the display panel and face the first side wall of the reflecting groove of each corresponding LED lamp source and reflecting groove pair are acute angles. The backlight module and the display device have the advantages that the brightness of a single LED lamp source can be controlled when an area control function is about to be realized by the backlight module, so that the brightness of an area which corresponds to the reflecting surface of the reflecting groove corresponding to the LED lamp source can be controlled, and the setting density of the LED lamp sources of the backlight module can be reduced.
Description
Technical field
The present invention relates to Region control Display Technique field, particularly a kind of backlight module and display unit.
Background technology
In Region control Display Technique field, the exposure module with Region control function mostly is down straight aphototropism mode set.
As shown in Figure 1, down straight aphototropism mode set comprises backboard 01 and the LED lamp source 02 that is arranged on a plurality of array distribution on backboard 01, and each LED lamp source 02 all can be controlled separately.
Because the lighting angle in each LED lamp source 02 is certain, be the uniformity that guarantees that backlight module emits beam, the distance between two LED lamp sources 02 of arbitrary neighborhood can not be too large, thereby cause the density of setting in the LED lamp source 02 in backlight module larger.
Therefore the density of setting that, how to reduce LED lamp source in the backlight module with Region control function has become those skilled in the art and has needed one of technical problem of solution badly.
Summary of the invention
The invention provides a kind of backlight module and display unit, in this backlight module, the density of setting in LED lamp source is less.
For achieving the above object, the invention provides following technical scheme:
A backlight module for display unit, comprises backboard, reflecting plate and a plurality of LED lamps source; Wherein:
Described reflecting plate is arranged in described backboard towards a side of described display unit display floater, described reflecting plate has a plurality of reflection grooves that are array distribution, the opening of each reflection groove is towards the bright dipping side of described backlight module, and described in each, the bottom land of reflection groove forms reflecting surface; Described LED lamp source is corresponding one by one with described reflection groove, in the LED lamp source and reflection groove of every a pair of mutual correspondence:
LED lamp source is installed on the first side wall of reflection groove, and the angle being between reflecting surface and the incidence surface of display floater in angle towards described the first side wall one side is acute angle.
In above-mentioned backlight module, reflecting plate has the reflection groove of a plurality of array distribution, and the bottom land of each reflection groove forms a reflecting surface, in the LED lamp source and reflection groove of every a pair of mutual correspondence, the light of LED lamp source transmitting is radiated on the reflecting surface of this reflection groove, and then the reflecting surface by reflection groove reflects to display floater; The area of reflecting surface is larger, and the brightness of a panel region corresponding with the reflecting surface of above-mentioned reflection groove can be controlled in each LED lamp source.
When above-mentioned backlight module is controlled function in feasible region, by controlling the brightness stool and urine in a LED lamp source, can realize the brightness to region corresponding to the reflecting surface of the reflection groove mutual corresponding with this LED lamp source, reduce the density of setting in LED lamp source in backlight module.
And light-emitting area one timing when backlight module, has reduced the density of setting in LED lamp source, thereby has reduced the cost of backlight module.
In addition, in above-mentioned backlight module, without using LGP the light of LED lamp source transmitting can be formed to area source, weight is lighter.
Preferably, described reflecting plate also has a plurality of depressed parts, and described in each, the opening direction of depressed part is contrary with the opening direction of described reflection groove.
Preferably, described in each, reflection groove has wedge-shaped groove structure, and described in each, depressed part coordinates formation to have the cavity of wedge structure with described backboard; Described cavity is corresponding one by one with described reflection groove, and in every a pair of described cavity and described reflection groove, the one side that deviates from described reflection groove interior reflective surface in described cavity is parallel with described reflecting surface.
Preferably, in the LED lamp source and reflection groove of every a pair of mutual correspondence, the first side wall of described reflection groove has installing hole, and described LED lamp source is embedded in described installing hole.
Preferably, in described reflecting plate in the region relative with the territory, effective display area of display floater, in the LED lamp source and reflection groove of every a pair of mutual correspondence:
Described LED lamp source is positioned at the depressed part that described the first side wall deviates from described reflection groove inner space one side, and be installed on described the first side wall and deviate from Yi Ce side, described reflection groove inner space, described the first side wall is provided with loophole, and the light of described LED lamp source transmitting irradiates on the reflecting surface of described reflection groove through described loophole.
Preferably, described in each, on the reflecting surface of reflection groove, be formed with a plurality of micro-structural projections.
Preferably, also comprise optical film material, described optical film material is positioned at the open side of described reflection groove.
Preferably, described reflecting plate is that PC material is stamped to form.
The present invention also provides a kind of display unit, and any backlight module providing in technique scheme is provided.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation with the backlight module of Region control function of the prior art;
The structural representation of the backlight module that Fig. 2 provides for an embodiment of the present invention;
The structural representation of the backlight module that Fig. 3 provides for the another kind of embodiment of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 2 and Fig. 3, the backlight module of the display unit that the embodiment of the present invention provides, comprises backboard 1, reflecting plate 2 and a plurality of LED lamps source 3; Wherein:
Reflecting plate 2 is arranged in backboard 1 towards a side of display unit display floater, and reflecting plate 2 has a plurality of reflection grooves 21 that are array distribution, and the opening of each reflection groove 21 is towards the bright dipping side of backlight module, and the bottom land of each reflection groove 21 forms reflecting surface 212; LED lamp source 3 is corresponding one by one with reflection groove 21, in the LED lamp source 3 and reflection groove 21 of every a pair of mutual correspondence:
As shown in Figure 3, LED lamp source 3 is installed on the first side wall 211 of reflection groove 21, and the angle being between reflecting surface 212 and the incidence surface of display floater in angle towards the first side wall 211 1 sides is acute angle.
In above-mentioned backlight module, reflecting plate 2 has the reflection groove 21 of a plurality of array distribution, and the bottom land of each reflection groove 21 forms a reflecting surface 212, in the LED lamp source 3 and reflection groove 21 of every a pair of mutual correspondence, the light of LED lamp source 3 transmittings is radiated on the reflecting surface 212 of this reflection groove 21, and then the reflecting surface 212 by reflection groove 21 reflects to display floater; The area of reflecting surface 212 is larger, and the brightness of a panel region corresponding with the reflecting surface 212 of above-mentioned reflection groove 21 can be controlled in each LED lamp source 3.
When above-mentioned backlight module is controlled function in feasible region, by controlling the brightness stool and urine in a LED lamp source 3, can realize the brightness to region corresponding to the reflecting surface 212 of the reflection groove 21 mutual corresponding with this LED lamp source 3, reduce the density of setting in LED lamp source 3 in backlight module.
And light-emitting area one timing when backlight module, has reduced the density of setting in LED lamp source 3, thereby has reduced the cost of backlight module.
In addition, in above-mentioned backlight module, without using LGP the light of LED lamp source transmitting can be formed to area source, weight is lighter.
As shown in Figure 3, in above-mentioned backlight module, reflecting plate 2 also has a plurality of depressed parts 22, and the opening direction of each depressed part 22 is contrary with the opening direction of reflection groove 21.
The setting of depressed part 22 can alleviate the weight of reflecting plate 2, thereby further alleviates the weight of backlight module.
Please continue to refer to Fig. 3, in a kind of preferred embodiment, each reflection groove 21 has wedge-shaped groove structure, and each depressed part 22 coordinates formation to have the cavity of wedge structure with backboard 1; Cavity is corresponding one by one with reflection groove 21, and in every a pair of cavity and reflection groove 21, the one side 221 that deviates from reflection groove 21 interior reflective surface 212 in cavity is parallel with reflecting surface 212.Said structure can increase depressed part 22 and take up space in reflecting plate 2 with reflection groove 21, is conducive to alleviate the weight of reflecting plate 2.
In a kind of preferred embodiment, uniformity while being radiated on the reflecting surface 212 of reflection groove 21 in order to increase the light source of LED lamp source 3 transmitting, in the LED lamp source 3 and reflection groove 21 of every a pair of mutual correspondence, the first side wall 211 of reflection groove 21 has installing hole, and LED lamp source 3 is embedded in installing hole.
As shown in Figure 3, in a kind of preferred embodiment, in reflecting plate 2 in the region relative with the territory, effective display area of display floater, in the LED lamp source 3 of every a pair of mutual correspondence and reflection groove 21:
LED lamp source 3 is positioned at the depressed part 22 that the first side wall 211 deviates from reflection groove 21 inner space one sides, and be installed on the first side wall 211 and deviate from reflection groove 21 Yi Ce sides, inner space, the first side wall 211 is provided with loophole, and the light of LED lamp source 3 transmittings irradiates on the reflecting surface 212 of reflection groove 21 through loophole.
Inhomogeneity impact when said structure can further reduce to be radiated on reflecting surface 212 due to the lighting angle in LED lamp source 3 on the light of LED lamp source 3 transmittings.
Preferably, in order to increase the uniformity of reflecting surface 212 reflection rays of each reflection groove 21, on the reflecting surface 212 of each reflection groove 21, be formed with a plurality of micro-structural projections.
As shown in Figure 3, in a kind of preferred embodiment, above-mentioned backlight module also comprises optical film material 4, and optical film material 4 is positioned at the open side of reflection groove 21.
Particularly, the reflecting plate 2 in above-mentioned backlight module is stamped to form for PC material.
The present invention another kind of embodiment provide a kind of display unit, and any backlight module providing in embodiment is provided this display unit.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the embodiment of the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (9)
1. a backlight module for display unit, is characterized in that, comprises backboard, reflecting plate and a plurality of LED lamps source; Wherein:
Described reflecting plate is arranged in described backboard towards a side of described display unit display floater, described reflecting plate has a plurality of reflection grooves that are array distribution, the opening of each reflection groove is towards the bright dipping side of described backlight module, and described in each, the bottom land of reflection groove forms reflecting surface; Described LED lamp source is corresponding one by one with described reflection groove, in the LED lamp source and reflection groove of every a pair of mutual correspondence:
LED lamp source is installed on the first side wall of reflection groove, and the angle being between reflecting surface and the incidence surface of display floater in angle towards described the first side wall one side is acute angle.
2. backlight module according to claim 1, is characterized in that, described reflecting plate also has a plurality of depressed parts, and described in each, the opening direction of depressed part is contrary with the opening direction of described reflection groove.
3. backlight module according to claim 2, is characterized in that, described in each, reflection groove has wedge-shaped groove structure, and described in each, depressed part coordinates formation to have the cavity of wedge structure with described backboard; Described cavity is corresponding one by one with described reflection groove, and in every a pair of described cavity and described reflection groove, the one side that deviates from described reflection groove interior reflective surface in described cavity is parallel with described reflecting surface.
4. backlight module according to claim 2, is characterized in that, in the LED lamp source and reflection groove of every a pair of mutual correspondence, the first side wall of described reflection groove has installing hole, and described LED lamp source is embedded in described installing hole.
5. backlight module according to claim 3, is characterized in that, in described reflecting plate in the region relative with the territory, effective display area of display floater, in the LED lamp source and reflection groove of every a pair of mutual correspondence:
Described LED lamp source is positioned at the depressed part that described the first side wall deviates from described reflection groove inner space one side, and be installed on described the first side wall and deviate from Yi Ce side, described reflection groove inner space, described the first side wall is provided with loophole, and the light of described LED lamp source transmitting irradiates on the reflecting surface of described reflection groove through described loophole.
6. backlight module according to claim 1, is characterized in that, is formed with a plurality of micro-structural projections described in each on the reflecting surface of reflection groove.
7. backlight module according to claim 1, is characterized in that, also comprises optical film material, and described optical film material is positioned at the open side of described reflection groove.
8. according to the backlight module described in claim 1～7 any one, it is characterized in that, described reflecting plate is that PC material is stamped to form.
9. a display unit, is characterized in that, comprises the backlight module described in claim 1～8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410367116.9A CN104154464A (en) | 2014-07-29 | 2014-07-29 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410367116.9A CN104154464A (en) | 2014-07-29 | 2014-07-29 | Backlight module and display device |
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| Publication Number | Publication Date |
|---|---|
| CN104154464A true CN104154464A (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410367116.9A Pending CN104154464A (en) | 2014-07-29 | 2014-07-29 | Backlight module and display device |
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| CN (1) | CN104154464A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106647028A (en) * | 2016-12-23 | 2017-05-10 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010017774A1 (en) * | 2000-02-24 | 2001-08-30 | Tomotaka Ito | Surface light source system |
| US20070091641A1 (en) * | 2005-10-20 | 2007-04-26 | Industrial Technology Research Institute | Backlight structure |
| CN101017281A (en) * | 2006-02-10 | 2007-08-15 | 鸿富锦精密工业（深圳）有限公司 | Back light system |
| US8421952B2 (en) * | 2007-12-03 | 2013-04-16 | Philips Lumileds Lighting Company, Llc | Illumination module for sectional illumination |
-
2014
- 2014-07-29 CN CN201410367116.9A patent/CN104154464A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010017774A1 (en) * | 2000-02-24 | 2001-08-30 | Tomotaka Ito | Surface light source system |
| US20070091641A1 (en) * | 2005-10-20 | 2007-04-26 | Industrial Technology Research Institute | Backlight structure |
| CN101017281A (en) * | 2006-02-10 | 2007-08-15 | 鸿富锦精密工业（深圳）有限公司 | Back light system |
| US8421952B2 (en) * | 2007-12-03 | 2013-04-16 | Philips Lumileds Lighting Company, Llc | Illumination module for sectional illumination |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106647028A (en) * | 2016-12-23 | 2017-05-10 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
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Application publication date: 20141119 |