CN203286399U - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
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- CN203286399U CN203286399U CN2013203176711U CN201320317671U CN203286399U CN 203286399 U CN203286399 U CN 203286399U CN 2013203176711 U CN2013203176711 U CN 2013203176711U CN 201320317671 U CN201320317671 U CN 201320317671U CN 203286399 U CN203286399 U CN 203286399U
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- 230000003287 optical effect Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008447 perception Effects 0.000 description 4
- 210000004556 brain Anatomy 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000036040 emmetropia Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
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Abstract
The utility model provides a backlight module and a display device, and relates to the technical field of display. Stereoscopic display can be achieved without optical gratings. The backlight module comprises a first light guide plate and a second light guide plate which are stacked, a first light source is arranged opposite to the first light guide plate, a second light source is arranged opposite to the second light guide plate, and the first light source and the second light source are located on the two opposite sides of the two light guide plates. Microgroove structures are arranged on the upper surface of the first light guide plate and the upper surface of the second light guide plate or the lower surface of the first light guide plate and the lower surface of the second light guide plate, and the farther the distance from the microgroove structure on each light guide plate to the corresponding light source opposite to the microgroove structure is, the larger the height of the microgroove structure is. The backlight module is suitable for the design and manufacture of the display device.
Description
Technical field
The utility model relates to the Display Technique field, relates in particular to a kind of backlight module and display unit.
Background technology
In recent years, stereoscopic display is that 3D (three-dimensional-is three-dimensional) shows, has become a main trend in demonstration field.Show and compare with ordinary two dimensional, the 3D technology can make picture become three-dimensional true to nature, and image no longer is confined to screen plane, can walk out seemingly the screen outside, allows spectators that sensation on the spot in person is arranged.Although the classification of 3D Display Technique is various, but its most basic principle is similar, utilize exactly the human eye left and right to receive respectively different images, be people's the about 65mm in two eyes intervals, owing to there being this position difference, left eye and right eye can be seen different two dimensional images, and then brain is through superpose and live again the information of different two dimensional images, forms one have before-rear, on-under, left-right side, far-closely wait the image of stereo directional effect.
Nowadays the 3D stereo display technique of main flow is to realize by special eyes, and this makes its range of application and comfort have a greatly reduced quality.For addressing the above problem, bore hole 3D shows ripe gradually.Existing bore hole 3D display unit is comprised of display floater and grating, and wherein, grating comprises a plurality of raster units, grating is formulated in the display floater front in a certain way, divide picture through grating, can make people's eyes see different visual patterns, produce stereo perception.But, due to additional grating on display screen, can make display brightness reduce.
The utility model content
Embodiment of the present utility model provides a kind of backlight module and display unit, comprises the display unit of described backlight module, need not grating and just can make the people produce stereo perception to the image of seeing, thereby can improve display brightness.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
The utility model provides a kind of backlight module, comprising: the first LGP of stacked placement and the second LGP; Be relatively set with the first light source, with the second LGP, be relatively set with secondary light source with the first LGP, and described the first light source and secondary light source are positioned at the relative both sides of described two LGPs; Wherein, be provided with micro groove structure at the upper surface of described the first LGP and described the second LGP or at the lower surface of described the first LGP and described the second LGP, and the height of the distance of the micro groove structure on each the described LGP light source far away described micro groove structure relative with it is higher.
Optionally, described micro groove structure forms many rows on described LGP, and far away apart from the light source relative with it, and adjacent two rows' spacings are less.
Optionally, a plurality of micro groove structures are drawn together in each package, and the micro groove structure that is positioned at same row is uniformly distributed.
Optionally, far away apart from the light source relative with it, the micro groove structure that each package is drawn together is more.
Optionally, described micro groove structure is triangular groove.
Optionally, described micro groove structure is the right angle trigonometry connected in star.
Optionally, the lopsided angle of inclination of right angle trigonometry connected in star on described LGP is identical.
Optionally, the lopsided angle of inclination of described right angle trigonometry connected in star is between 40 °-60 °.
Optionally, described light source is identical with the height of described LGP.
The utility model embodiment provides a kind of display unit, comprising: backlight module and display screen, wherein, the arbitrary described backlight module that described backlight module provides for the utility model embodiment.
A kind of backlight module and display unit that the utility model embodiment provides, described backlight module comprises the LGP of two stacked settings, and be arranged on described LGP both sides respectively with a light source that LGP is relative, wherein, being positioned at light that the light source on LGP right side sends turns to a lateral deviation after the Multi reflection of LGP and refraction; Be positioned at light that the light source in LGP left side sends through the Multi reflection of LGP and after reflecting to the different direction deflection of the yawing moment of the light that sends from the light source on right side.Like this, by described backlight module, make light to different direction deflection, need not just can realize stereoscopic display by other structures such as gratings, can also improve display brightness.
Description of drawings
The sectional structure schematic diagram of a kind of backlight module that Fig. 1 provides for the utility model embodiment;
The light path schematic diagram of the light that the first light source that Fig. 2 provides for the utility model embodiment sends;
The light path schematic diagram of the light that the secondary light source that Fig. 3 provides for the utility model embodiment sends;
The second LGP side-looking structural representation of the backlight module that Fig. 4 provides for the utility model embodiment;
A kind of the second light conducting plate structure schematic diagram that Fig. 5 provides for the utility model embodiment;
Another kind the second light conducting plate structure schematic diagram that Fig. 6 provides for the utility model embodiment;
Another kind the second light conducting plate structure schematic diagram that Fig. 7 provides for the utility model embodiment;
Reference numeral:
The 1-backlight module; The 2-framework; The 30-micro groove structure; The 30a-right-angle side; The 30b-inclined side; 31-the first support member; 32-the second support member; The 4-reflecting plate; The 5-prismatic lens; The 6-diffusion sheet; The 7-display screen; The 8-transparent adhesive tape; 11-the first light source; The 12-secondary light source; 21-the first LGP; 22-the second LGP.
The specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.
The utility model embodiment provides a kind of backlight module 1, comprising: the first LGP 21 of stacked placement and the second LGP 22; Be relatively set with the first light source 11, with the second LGP 22, be relatively set with secondary light source 12 with the first LGP 21, and described the first light source 11 and secondary light source 12 are positioned at the relative both sides of described two LGPs; Wherein, be provided with micro groove structure 30 at the upper surface of described the first LGP 21 and described the second LGP 22 or at the lower surface of described the first LGP 21 and described the second LGP 22, and the height of 30 distances of the micro groove structure on each the described LGP light source far away described micro groove structure relative with it is higher.
Need to prove, the first LGP and the stacked placement of the second LGP, can be positioned at above the second LGP by the first LGP, also can be positioned at above the first LGP by the second LGP, in the utility model embodiment, concrete restriction is not done in the position of the first LGP and the second LGP.Concrete, be relatively set with the first light source with the first LGP, described the first LGP makes light that the first light source sends to a direction deflection, namely makes the light that the first light source sends be received by people's left eye (or right eye); Accordingly, with the second LGP, be relatively set with secondary light source, described the second LGP, to another direction deflection, namely makes the light that secondary light source sends be received by people's right eye (or left eye) for the light that makes secondary light source send.Need to prove, in the utility model embodiment, make the light deflection to the right of the first light source with described the first LGP, the light deflection to the left that the second LGP makes secondary light source send, wherein, described " left side " " right side " is the optical path direction along backlight module, take the normal of backlight module as boundary, sets.Through the light of the first LGP deflection to the right, by people's left eye, received, received by people's right eye through the light of the second LGP deflection left, as shown in Figure 1.
Concrete, as shown in Figure 2, with the first LGP 21, be relatively set with the first light source 11, described the first LGP 21 makes the light direction deflection to the right that the first light source 11 sends.Concrete, as shown in Figure 2, the light e that the first light source 11 sends and light f are through the Multi reflection of LGP and reflect deflection to the right, namely make the light that the first light source sends be received by people's left eye.In like manner, as shown in Figure 3, be relatively set with secondary light source 12 with the second LGP 22, described the second LGP 22 is used for the light direction deflection to the left that makes secondary light source 12 send, as shown in Figure 3, the light a that secondary light source 12 sends, light c and light b are through the Multi reflection of LGP and reflect the deflection of backward left side, namely make the light that secondary light source 12 sends be received by people's right eye.The light that sends due to the first light source and secondary light source sends backward different both direction deflection through LGP, received by the left eye of human eye and right eye respectively, left eye and right eye can be seen different two dimensional images, then brain superposes through the information to different two dimensional images, forms 3-D effect.And in the utility model embodiment, the structure of described the first LGP and the second LGP can be identical, but in order to guarantee that each LGP makes the deflection of the light of the light source corresponding with it, described two LGPs when it is installed according to the position of light source when backlight module is installed direction different.
Wherein, be provided with micro groove structure at the upper surface of described the first LGP and described the second LGP or at the lower surface of described the first LGP and described the second LGP, can be that upper surface at described the first LGP and described the second LGP arranges micro groove structure, can be also as shown in Figure 1, at the lower surface of the first LGP 21 and the second LGP 22, be provided with micro groove structure.The height of the light source described micro groove structure far away that the micro groove structure distance on described each described LGP is relative with it is higher, and namely micro groove structure increases along the height of the optical path direction of the light source relative with it.As shown in Figure 1, micro groove structure distance the first light source 11 on the first LGP 21 is far away, and the height of micro groove structure is higher; Corresponding, the micro groove structure on the second LGP 22 is far away apart from secondary light source 12, and the height of micro groove structure is higher.The electrical distance light source that sends due to the light source more loss of distance light is larger, be large than the light intensity of near position apart from light source on LGP, little than the light intensity of position far away apart from light source, the height of the micro groove structure of drawing together in each package of position far away of distance light source is higher, can be so that the distant position of the enough arrival LGPs of the luminous energy that light source sends, and the position far away at the distance light source makes light deflect through micro groove structure, further can guarantee the uniformity of light of sending through LGP.Avoid the light that light source sends only in the position of distance LGP close together, to be reflected and to reflect, light is little than the intensity at distant positions place at the distance light source, the backlight module non-uniform light.Micro groove structure is arranged on the lower surface of described LGP, and the height of described micro groove structure is the ultimate range of micro groove structure apart from the LGP lower surface; Micro groove structure is arranged on the upper surface of described LGP, and the height of described micro groove structure is the ultimate range of micro groove structure apart from the LGP upper surface.
The utility model embodiment provides a kind of backlight module, and described backlight module comprises the first LGP and second LGP of stacked placement; Be relatively set with the first light source, with the second LGP, be relatively set with secondary light source with the first LGP, and described the first light source and secondary light source are positioned at the relative both sides of described two LGPs, described the first LGP makes light that the first light source sends to a direction deflection, namely makes the light that the first light source sends be received by people's left eye (or right eye); Accordingly, with the second LGP, be relatively set with secondary light source, described the second LGP, to another direction deflection, namely makes the light that secondary light source sends be received by people's right eye (or left eye) for the light that makes secondary light source send.The light that sends due to the first light source and secondary light source sends backward different both direction deflection through LGP, received by the left eye of human eye and right eye respectively, left eye and right eye can be seen different two dimensional images, then brain superposes through the information to different two dimensional images, need not to arrange grating and just can form 3-D effect.And the height of the light source described micro groove structure far away that described the first LGP is relative with it with the groove structure distance on the second LGP is higher, can guarantee that the light that sends apart from light source can arrive the LGP position far away apart from light source, and then through micro groove structure, make light deflect, improve the uniformity of luminance of backlight module.
Optionally, as Figure 4-Figure 7, described micro groove structure forms many rows on described LGP, and far away apart from the light source relative with it, and adjacent two rows' spacings are less.Need to prove, the utility model embodiment only is elaborated as an example of the second LGP example, and arranging of the micro groove structure on the first LGP and the second LGP is identical.As shown in Figure 4, adjacent two rows' nearer apart from light source spacing p is greater than distance light source adjacent two rows' far away spacing k.Concrete, as shown in Figure 4, described micro groove structure forms many rows along 101 directions.Need to prove, described 101 directions can be the optical path directions of the light source relative with LGP, and as shown in Figure 4,101 directions are the optical path direction of secondary light source 12.Because LGP is nearer apart from light source, the light intensity that sends of light source is large, far away apart from light source, light intensity is little, LGP is far away apart from the light source relative with it, and adjacent two rows' spacings are less, and namely LGP distributes closeer at distance light source position micro groove structure far away, can improve the utilization rate of the light that light source sends, further promote the uniformity of luminance of backlight module.
Need to prove, micro groove structure on described LGP forms many rows, and it can be as shown in Figure 5, and a micro groove structure is drawn together in each package, and a described micro groove structure runs through whole LGP, so that the light that light source sends evenly sends after micro groove structure emission and refraction.Can be also that a plurality of micro groove structures are drawn together in each package as shown in Figure 6, and a plurality of micro groove structures that are positioned at same row be uniformly distributed, to guarantee the uniformity of light of outgoing after micro groove structure reflection and refraction.
Further, as described in Figure 7, far away apart from the light source relative with it, the micro groove structure that each package is drawn together is more.The electrical distance light source that sends due to the light source more loss of distance light is larger, be large than near light intensity apart from light source on LGP, little than light intensity far away apart from light source, the microflute of drawing together than each package of near position at the distance light source is few, can be so that the distant position of the enough arrival LGPs of the luminous energy that light source sends, and the micro groove structure of drawing together than each package of position far away at the distance light source is many, can, so that arriving the light of the position far away apart from light source sends through micro groove structure reflection and refraction, improve the uniformity of luminance of backlight module.
Optionally, described micro groove structure is triangular groove.And preferred, as Figure 4-Figure 7, described micro groove structure is the right angle trigonometry connected in star.Concrete, as shown in Figure 4, each right angle trigonometry connected in star comprises a right-angle side 30a and an inclined side 30b, wherein, the distance of described right-angle side and LGP lower surface is the distance of groove, as shown in Figure 4, the right angled triangle groove distance secondary light source 12 on the second LGP 22 is far away, and the height of right-angle side 30a is higher.And the light source that the inclined side of described right angled triangle is relative with LGP is relative.As shown in Figure 1, the inclined side of the right angled triangle microflute on LGP 21 is relative with the first light source 11; The inclined side of the right angled triangle microflute on LGP 22 is relative with secondary light source 12.
Optionally, the lopsided angle of inclination of right angle trigonometry connected in star on described LGP is identical.Concrete, as shown in Figure 4, on LGP, the angle of each inclined side 30b and right-angle side 30a is inclination angle, and each inclined angle alpha on LGP is identical.LGP is not only easy to make like this, and easily moulding and light outgoing in certain scope, can further guarantee the homogeneity of the light that sends through LGP.
Optionally, the lopsided angle of inclination of described right angle trigonometry connected in star is between 40 °-60 °.Need to prove, the angle of inclination of described right angled triangle comprises 40 ° and 60 °.So not only can avoid occurring total reflection, and the maximum angle of people's left eye and right eye reception light is 70 °, minimum angles is 10 °, described angle of inclination is between 40 °-60 °, through light angle that LGP sends between 5 °-35 °, therefore the angle that can the guarantor receives light is between 10 °-70 °, and guarantor's emmetropia receives image.
Optionally, described light source is identical with the height of described LGP.Can improve like this utilization rate of the light that light source sends.
Optionally, described backlight module also comprises, framework and support member, described framework and support member are used for fixing and support described LGP and light source.Concrete, as shown in Figure 1, described backlight module also comprises framework 2 and the first support member 31 and the second support member 32, and wherein, framework 2 is used for supporting each part of whole backlight module, and support member is used for supporting other parts of backlight module.As shown in Figure 1, the first support member 31 support rib eyeglasses 5, diffusion sheet 6 and display screen 7.The second support member 32 is used for supporting the first light source 11.Need to prove, the part of backlight module also is not limited to above-mentioned description, and as shown in Figure 1, backlight module can also comprise reflector plate 4, about other associated components of backlight module, only needs get final product with reference to prior art, does not here repeat.
In addition, as shown in Figure 1, described the first LGP 21 and the second LGP 22 can also be bonded together by transparent adhesive tape 8 before assembling, further facilitate the installation of backlight module.
The utility model embodiment provides a kind of display unit, comprising: backlight module and display screen, wherein, the arbitrary described backlight module that described backlight module provides for the utility model embodiment.Described display unit can be the display devices such as liquid crystal display, Electronic Paper and any product or the parts with Presentation Function such as TV, digital camera, mobile phone, panel computer that comprise these display devices.
Described display unit is when work, and two light sources of backlight module switch and open successively.With reference to Fig. 3, when secondary light source 12 is opened, the light that secondary light source 12 sends is through two LGPs, and its light from the LGP ejaculation all facing one direction.Concrete, as shown in Figure 3, the inclined side of the right angled triangle of the light a that secondary light source 12 sends on lower LGP 22 reflection backward left side deflection; The light c that secondary light source 12 sends is after the reflection of the inclined side of the right angled triangle on lower LGP 22, then through the deflection to the left of upper LGP; After the inclined side refraction of the right angled triangle of the light that secondary light source 12 sends on lower LGP 22, the light b through reflector plate reflection through under after the inclined side reflection of right angled triangle on LGP 22, then through the inclined side of the right angled triangle of upper LGP 21, reflect the deflection of backward left side.Can learn from Fig. 3, the light that secondary light source 12 sends is through Multi reflection and the refraction of lower LGP and upper LGP, and its emergent ray is deflection to the left all.Same, as shown in Figure 2, when the first light source 11 is opened, the light that the first light source 11 sends is through two LGPs, and its light from the LGP ejaculation is all towards another direction.Concrete, as shown in Figure 2, the light e that the first light source 11 sends after the inclined side refraction of the right angled triangle on upper LGP 21, then penetrates the deflection to the right of its emergent ray finally from upper LGP through the repeatedly refraction of lower LGP; The light f that the first light source 11 sends directly deflection to the right after the inclined side refraction of the right angled triangle on upper LGP 21.Can learn from Fig. 2, the light that the first light source 11 sends is through Multi reflection and the refraction of lower LGP and upper LGP, and its emergent ray is deflection to the right all.Like this, the image that display screen shows arrives respectively intelligent's left eye and right eye by different directions, make people's eyes see different visual patterns, produces stereo perception.
Need to prove, the light path of the light in the accompanying drawing in the utility model embodiment is part reflection and refraction just, it is mainly used in analyzing the deflection situation of the light that each light source sends, in real process, the light that each light source sends, through Multi reflection and the refraction of upper LGP He Xia road light, finally sends from upper LGP.But no matter light is through reflection and the refraction of how many times, is positioned at the light that the light source in LGP left side sends and sends rear all deflection to the right from upper LGP finally, by people's left eye, received; Be positioned at the light that the light source on LGP right side sends and send rear all deflection left from upper LGP finally, by people's right eye, received.Like this, the image that display screen shows arrives respectively intelligent's left eye and right eye by different directions, make people's eyes see different visual patterns, produces stereo perception.
The above; it is only the specific embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (10)
1. a backlight module, is characterized in that, comprising: the first LGP of stacked placement and the second LGP; Be relatively set with the first light source, with the second LGP, be relatively set with secondary light source with the first LGP, and described the first light source and secondary light source are positioned at the relative both sides of described two LGPs; Wherein, be provided with micro groove structure at the upper surface of described the first LGP and described the second LGP or at the lower surface of described the first LGP and described the second LGP, and the height of the distance of the micro groove structure on each the described LGP light source far away described micro groove structure relative with it is higher.
2. backlight module according to claim 1, is characterized in that, described micro groove structure forms many rows on described LGP, and far away apart from the light source relative with it, and adjacent two rows' spacings are less.
3. backlight module according to claim 2, is characterized in that, a plurality of micro groove structures are drawn together in each package, and the micro groove structure that is positioned at same row is uniformly distributed.
4. according to claim 2 or 3 described backlight modules, is characterized in that, far away apart from the light source relative with it, the micro groove structure that each package is drawn together is more.
5. backlight module according to claim 1, is characterized in that, described micro groove structure is triangular groove.
6. backlight module according to claim 5, is characterized in that, described micro groove structure is the right angle trigonometry connected in star.
7. backlight module according to claim 6, is characterized in that, the lopsided angle of inclination of right angle trigonometry connected in star on described LGP is identical.
8. backlight module according to claim 7, is characterized in that, the lopsided angle of inclination of described right angle trigonometry connected in star is between 40 °-60 °.
9. backlight module according to claim 1, is characterized in that, described light source is identical with the height of described LGP.
10. display unit comprises: backlight module and display screen, it is characterized in that, and described backlight module is the described backlight module of claim 1-9 any one.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103292219A (en) * | 2013-06-04 | 2013-09-11 | 北京京东方光电科技有限公司 | Backlight module and display device |
| CN104460115A (en) * | 2014-12-31 | 2015-03-25 | 苏州大学 | Multi-view pixel directional backlight module and naked-eye 3D display device |
| CN104696736A (en) * | 2013-12-09 | 2015-06-10 | 欧普照明股份有限公司 | Illumination lamp and illumination module thereof |
| CN104765095A (en) * | 2014-01-02 | 2015-07-08 | 扬升照明股份有限公司 | Light guide plate and light source module |
| CN105911637A (en) * | 2016-07-01 | 2016-08-31 | 京东方科技集团股份有限公司 | Light guide panel, backlight module and display device |
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| CN103292219A (en) * | 2013-06-04 | 2013-09-11 | 北京京东方光电科技有限公司 | Backlight module and display device |
| CN104696736A (en) * | 2013-12-09 | 2015-06-10 | 欧普照明股份有限公司 | Illumination lamp and illumination module thereof |
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| CN104765095A (en) * | 2014-01-02 | 2015-07-08 | 扬升照明股份有限公司 | Light guide plate and light source module |
| CN104460115B (en) * | 2014-12-31 | 2017-09-01 | 苏州大学 | A multi-view pixel pointing type backlight module and naked-eye 3D display device |
| CN104460115A (en) * | 2014-12-31 | 2015-03-25 | 苏州大学 | Multi-view pixel directional backlight module and naked-eye 3D display device |
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| EP3147703A1 (en) * | 2015-09-23 | 2017-03-29 | Samsung Electronics Co., Ltd. | Light source device, display apparatus including the same, display method using the same |
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| JP2017134331A (en) * | 2016-01-29 | 2017-08-03 | セイコーエプソン株式会社 | Light source device and projector |
| CN105911637A (en) * | 2016-07-01 | 2016-08-31 | 京东方科技集团股份有限公司 | Light guide panel, backlight module and display device |
| WO2018000805A1 (en) * | 2016-07-01 | 2018-01-04 | Boe Technology Group Co., Ltd. | Light-guiding panel, backlight module, and display device |
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