CN105465738A - Lens, direct-light-type backlight module and liquid crystal display device - Google Patents
Lens, direct-light-type backlight module and liquid crystal display device Download PDFInfo
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- CN105465738A CN105465738A CN201410413356.8A CN201410413356A CN105465738A CN 105465738 A CN105465738 A CN 105465738A CN 201410413356 A CN201410413356 A CN 201410413356A CN 105465738 A CN105465738 A CN 105465738A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 18
- 230000005142 aphototropism Effects 0.000 claims description 39
- 230000000694 effects Effects 0.000 description 12
- 238000004020 luminiscence type Methods 0.000 description 10
- 238000005286 illumination Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 208000002925 dental caries Diseases 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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Abstract
The embodiment of the invention provides a lens, a direct-light-type backlight module and a liquid crystal display device and relates to the technical field of liquid crystal display. The luminous uniformity of the direct-light-type backlight module can be improved, and the light mixing distance is shortened, so that the direct-light-type backlight module is thinned. The lens comprises a lens body. The lens body comprises a light inlet face and a light outlet face. The lens is characterized in that at least one cavity is formed in the lens body and located between the light inlet face and the light outlet face; the cavity is filled with a medium or is a vacuum cavity, and the refractive index of the medium is smaller than that of the lens body. The lens is used for the direct-light-type backlight module.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to a kind of lens, down straight aphototropism mode set and liquid crystal indicator.
Background technology
Liquid crystal indicator is a kind of passive-type display unit, itself can not be luminous, backlight module is needed to provide light, according to the difference of backlight module distributing position in liquid crystal indicator, backlight can be divided into side entrance back module and down straight aphototropism mode set, in down straight aphototropism mode set, need to use light-emitting component as light source, such as: multiple LED can be used as light source, but because the lighting angle of general light-emitting component is limited, the lighting angle of LED is generally about 140 degree, therefore, usually need on light emitting elements to arrange lens, uniform light light-emitting component being sent by these lens is dispersed, the uniform area source of final formation, reach the object of display image, the structure of the existing lens for down straight aphototropism mode set as shown in Figure 1, comprise lens body 10, lens body 10 comprises incidence surface 101 and exiting surface 102, during use, light-emitting component 20 (LED) is arranged at the side of incidence surface 101, the light that light-emitting component 20 sends reflects at incidence surface 101 and exiting surface 102, thus by described lens, the uniform light that light-emitting component 20 sends is dispersed.
In prior art, the light that light-emitting component 20 sends only reflects at incidence surface 101 and exiting surface 102, in the then straightline propagation of lens body 10 inside, therefore, the disperse function of the light that lens send for light-emitting component is very limited, make the light-emitting area of down straight aphototropism mode set less, and it is even not, in order to make light-emitting area larger, luminescence is more even, need the light mixing distance increasing down straight aphototropism mode set, but the thickness of down straight aphototropism mode set can be made like this to increase, be unfavorable for realizing slimming.
Summary of the invention
Embodiments of the invention provide a kind of lens, down straight aphototropism mode set and liquid crystal indicator, can improve the uniformity of down straight aphototropism mode set luminescence, and reduce light mixing distance, make down straight aphototropism mode set slimming.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of lens, comprise lens body, described lens body comprises incidence surface and exiting surface, at least one cavity is provided with in described lens body, described cavity is between described incidence surface and described exiting surface, and being filled with medium in described cavity or described cavity is vacuum chamber, the refractive index of described medium is less than the refractive index of described lens body.
A kind of down straight aphototropism mode set, comprise backboard and be arranged at the some light-emitting components on described backboard, light-emitting component described at least one is provided with the lens described in technique scheme.
A kind of liquid crystal indicator, comprises the down straight aphototropism mode set described in technique scheme.
The lens that the embodiment of the present invention provides, down straight aphototropism mode set and liquid crystal indicator, at least one cavity is provided with between the incidence surface and exiting surface of lens body, and be filled with medium in described cavity or described cavity is vacuum chamber, the refractive index of described medium is less than the refractive index of described lens body, the light that light-emitting component is sent is when by described lens, the lens body of described cavity both sides all can be dispersed light, concrete principle is as follows: the refractive index due to vacuum chamber and described medium is all less than the refractive index of described lens body, light all can be reflected on the surface of arbitrary described cavity both sides, and dispersed further, thus the intrinsic described cavity of scioptics adds the number of times that light is refracted, increase the dispersion angle of light, make described down straight aphototropism mode set luminescence more even, illumination effect is better, avoid and increase light mixing distance for improving uniformity of luminance, be conducive to realizing down straight aphototropism mode set slimming, simultaneously, avoid the illumination effect for improving backlight module and increase the quantity of described light-emitting component, or reduce the spacing of each described light-emitting component, can when ensureing illumination effect, reduce the quantity of light-emitting component, reduce product cost.Thus, the uniformity of down straight aphototropism mode set luminescence can be improved, and reduce light mixing distance, make down straight aphototropism mode set slimming.
Accompanying drawing explanation
Fig. 1 is existing lensed schematic diagram;
Fig. 2 is the schematic diagram of the first embodiment of a kind of lens of the embodiment of the present invention;
Fig. 3 is the schematic diagram of the second embodiment of a kind of lens of the embodiment of the present invention;
Fig. 4 is the schematic diagram of the third embodiment of a kind of lens of the embodiment of the present invention;
Fig. 5 is the schematic diagram of the 4th kind of embodiment of a kind of lens of the embodiment of the present invention;
Fig. 6 is the schematic diagram of the 5th kind of embodiment of a kind of lens of the embodiment of the present invention;
Fig. 7 is the schematic diagram of a kind of down straight aphototropism mode set of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In describing the invention, it will be appreciated that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
Term " first ", " second ", only for describing object, and instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic can not be interpreted as.Thus, be limited with " first ", " second ", feature can express or impliedly comprise one or more these features.In describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
It should be noted that: the arrow in the accompanying drawing of the embodiment of the present invention is for representing the direction of propagation of the light that described light-emitting component sends.
With reference to Fig. 2, Fig. 2 is a specific embodiment of lens provided by the invention, described lens, comprise lens body 1, lens body 1 comprises incidence surface 11 and exiting surface 12, is provided with at least one cavity in lens body 1, and described cavity is between described incidence surface 11 and exiting surface 12, and being filled with medium in described cavity or described cavity is vacuum chamber, the refractive index of described medium is less than the refractive index of described lens body.
Refractive index due to vacuum chamber and described medium is all less than the refractive index of lens body 1, light all can be reflected on the surface of described cavity both sides, and dispersed further, thus the described cavity in scioptics body 1 adds the number of times that light is refracted, increase the dispersion angle of light, make the light that sends from exiting surface 12 more even, illumination effect is better, avoid and increase light mixing distance for improving uniformity of luminance, be conducive to realizing down straight aphototropism mode set slimming, simultaneously, avoid the illumination effect for improving backlight module and increase the quantity of light-emitting component, or reduce the spacing of each described light-emitting component, can when ensureing illumination effect, reduce the quantity of light-emitting component, reduce product cost.Thus, the uniformity of down straight aphototropism mode set luminescence can be improved, and reduce light mixing distance, make down straight aphototropism mode set slimming.
Particularly, to be provided with a cavity in lens body 1 and two cavitys illustrate:
1, as shown in Figure 2, cavity 2 is provided with in the lens body 1 of incidence surface 11 and exiting surface 12, medium in cavity 2 is air, light launches refraction at incidence surface 11, and after entering lens body 1, cavity 2 both side surface (inside of lens body 1) all reflects, make the scope of the light sent from exiting surface 12 become large, thus light is dispersed more, evenly, be conducive to making down straight aphototropism mode set slimming.
2, as shown in Figure 3, cavity 2a and cavity 2b is provided with in the lens basis 1 of incidence surface 11 and exiting surface 12, air is filled with in cavity 2a and 2b, all can reflect light in the both side surface of cavity 2a and the both side surface of cavity 2b, thus light is dispersed more and evenly, is conducive to making down straight aphototropism mode set slimming.
Because the both side surface of light at arbitrary described cavity all can reflect, thus increase lighting angle, make light evenly disperse, described cavity is more, then better to the dissipating effect of light, therefore, multiple described cavity can be set, namely have two described cavitys at least, and multiple described cavity is successively arranged between incidence surface 11 and exiting surface 12, is convenient to light successively through each described cavity.But because the difficulty of processing arranging cavity in lens body 1 is comparatively large, and cavity too much can cause the intensity of lens body 1 to decline, and therefore, as shown in Figure 3, preferably arranges two described cavitys in lens body 1, i.e. cavity 2a and cavity 2b.
Described cavity can be various shape, and as shown in Figure 4, the lower surface of cavity 2 is curved surface, and the cross section of upper surface is square; Or as shown in Figure 2, described cavity 2 is curved, and namely cavity 2 both side surface is cambered surface; When described cavity has multiple, multiple described cavity is all curved, and as shown in Figure 3, cavity 2a and cavity 2b is all curved.The light sent due to light-emitting component enters described cavity from the lower surface of described cavity, described cavity is penetrated from the upper surface of described cavity, if the both side surface of described cavity exists corner angle, then in these edges and corners, may there is irregular change in the direction of propagation of light, be difficult to ensure evenly dispersing of light, finally may form hot spot in display display unit, reduce display effect, therefore, preferred arbitrary described cavity is curved, and namely the both side surface of arbitrary described cavity is cambered surface.
Multiple described cavity can be identical cavity, and as shown in Figure 5, multiple described cavity is identical arc-shaped cavity; As shown in Figure 6, multiple described cavity is identical rectangular enclosure; Or as shown in Figure 3, described cavity is arc, and the multiple direction of described cavity along described incidence surface to described exiting surface increases successively.Because light is when successively through multiple described cavity, all can be dispersed because of refraction, if multiple described cavity is identical, the light then received near the described cavity of incidence surface 11 is more, the light received away from the described cavity of incidence surface 11 will reduce, this is unfavorable for improving luminous uniformity, therefore, the preferred multiple direction of described cavity along described incidence surface to described exiting surface increases successively, make described in adjacent two between cavity, away from the light received from the described cavity near incidence surface 11 of the described cavity of incidence surface 11, thus can further improve luminous uniformity, improve the utilization rate to light.
In order to improve the utilization rate to the light that light-emitting component sends, light is avoided to spill from the both sides of lens body 1 before entering incidence surface 11, can the groove 111 that can cover on light-emitting component be set on incidence surface 11, the light that light-emitting component is sent enters and enters lens body 1 by the surface of groove 111, thus the light in larger scope that light-emitting component sends can be received, the light that can light-emitting component be utilized more fully to send, is conducive to improving illumination effect.
In order to avoid because there are corner angle on the surface because of groove 111, and make the direction of propagation of light that irregular change occur, cause the uniformity of light to reduce, the surface of groove 111 can be curved surface.
When being provided with multiple described cavity between incidence surface 11 to exiting surface 12, the direction of how described cavity along incidence surface 11 to exiting surface 12 increases successively, and multiple described cavity can successively cover on light-emitting component from inside to outside.
Exiting surface 12 is distributed with multiple micro-structural (not shown), described multiple micro-structural can make to disperse further from the light of described exiting surface outgoing, thus making light more equal, bulge-structure described in tool can be one-body molded with lens body 1, so that manufacture.
With reference to Fig. 7, Fig. 7 is a specific embodiment of down straight aphototropism mode set provided by the invention, described down straight aphototropism mode set comprises backboard 4, backboard 4 is provided with some light-emitting components 3, light-emitting component described at least one is provided with the lens described in above-mentioned arbitrary technical scheme, the top of the lens body 1 of described lens is provided with diffuser plate 5, is provided with optical diaphragm group 6 above diffuser plate 5.
Due to the lens that use in the down straight aphototropism mode set of the present embodiment and said lens each embodiment described in lens identical, therefore the two identical problem that can solve, and reach identical effect.
Particularly, groove 111 on lens incidence surface 11 can be covered on light-emitting component 3, fill air between groove 111 and light-emitting component 3, lens body 1 is provided with fixing feet (not shown), is fixed on backboard 4 by described lens by described fixing feet.
Light-emitting component 3 can be arranged at the optional position in region that each described lens cover on backboard 4, but because light-emitting component 3 has certain lighting angle, if light-emitting component 3 to be arranged at the edge in the region that each described lens cover on backboard 4, then may be amesiality from the light of each described lens outgoing, reduce the uniformity of backlight module luminescence, therefore, in order to improve the uniformity of backlight module luminescence, light-emitting component 3 can be arranged at the center in the region that each described lens cover on backboard 4, thus avoid from the light of each described lens outgoing amesiality, make the luminescence of down straight aphototropism mode set more even.
In order to improve illumination effect further, make the luminescence of down straight aphototropism mode set more even, described lens can be all set on each light-emitting component 3, thus the light that each light-emitting component 3 is sent all can be dispersed preferably, and make the luminescence of down straight aphototropism mode set more even.
Because LED power consumption is little, luminous efficiency is high, and structure is simple, and therefore, light-emitting component 3 can adopt LED.
The embodiment of the present invention additionally provides a kind of liquid crystal indicator, comprises the down straight aphototropism mode set described in above-mentioned arbitrary technical scheme.Due to the down straight aphototropism mode set that uses in the liquid crystal indicator of the present embodiment and above-mentioned down straight aphototropism mode set each embodiment described in down straight aphototropism mode set identical, therefore the two identical problem that can solve, and reach identical effect.
Liquid crystal indicator described in the embodiment of the present invention can be: liquid crystal panel, Electronic Paper, LCD TV, liquid crystal display, DPF, mobile phone, panel computer etc.
Other formations about the liquid crystal indicator described in the embodiment of the present invention wait known by those skilled in the art, no longer describe in detail at this.
In the description of this description, specific features, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (12)
1. lens, comprise lens body, described lens body comprises incidence surface and exiting surface, it is characterized in that, at least one cavity is provided with in described lens body, described cavity between described incidence surface and described exiting surface, and is filled with medium or described cavity is vacuum chamber in described cavity, the refractive index of described medium is less than the refractive index of described lens body.
2. lens according to claim 1, is characterized in that, described cavity has multiple, and multiple described cavity is successively arranged between described incidence surface and described exiting surface.
3. lens according to claim 2, is characterized in that, multiple described cavity is all curved.
4. lens according to claim 3, is characterized in that, the multiple direction of described cavity along described incidence surface to described exiting surface increases successively.
5. lens according to claim 1, is characterized in that, described incidence surface is provided with the groove that can cover on light-emitting component.
6. lens according to claim 5, is characterized in that, the surface of described groove is curved surface.
7. lens according to claim 1, is characterized in that, described exiting surface is distributed with multiple micro-structural, and described multiple micro-structural can make the divergence of beam from described exiting surface outgoing.
8. a down straight aphototropism mode set, is characterized in that, comprise backboard and be arranged at the some light-emitting components on described backboard, light-emitting component described at least one is provided with the lens according to any one of claim 1 ~ 7.
9. down straight aphototropism mode set according to claim 8, is characterized in that, described light-emitting component is positioned at the center in the region that described lens hide on described backboard.
10. down straight aphototropism mode set according to claim 8, is characterized in that, each described light-emitting component is equipped with described lens.
Down straight aphototropism mode set according to any one of 11. according to Claim 8 ~ 10, is characterized in that, described light-emitting component is LED.
12. 1 kinds of liquid crystal indicators, is characterized in that, comprise the down straight aphototropism mode set according to any one of claim 8 ~ 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410413356.8A CN105465738A (en) | 2014-08-20 | 2014-08-20 | Lens, direct-light-type backlight module and liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410413356.8A CN105465738A (en) | 2014-08-20 | 2014-08-20 | Lens, direct-light-type backlight module and liquid crystal display device |
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| CN105465738A true CN105465738A (en) | 2016-04-06 |
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| CN201410413356.8A Pending CN105465738A (en) | 2014-08-20 | 2014-08-20 | Lens, direct-light-type backlight module and liquid crystal display device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107290818A (en) * | 2017-07-31 | 2017-10-24 | 惠州拓邦电气技术有限公司 | A kind of light guide structure and device |
| CN110954982A (en) * | 2018-09-27 | 2020-04-03 | 纬创资通股份有限公司 | Light guide device and indicating equipment with light-emitting function |
| CN117613175A (en) * | 2024-01-19 | 2024-02-27 | 深圳市华皓伟业光电有限公司 | LED packaging structure |
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| CN101639181A (en) * | 2009-08-07 | 2010-02-03 | 广东昭信光电科技有限公司 | Direct type backlighting system |
| CN102777854A (en) * | 2012-06-19 | 2012-11-14 | 扬州雷笛克光学有限公司 | LED (light-emitting diode) optical lens with media |
| CN202691910U (en) * | 2012-04-06 | 2013-01-23 | 鑫日东光电股份有限公司 | Omnidirectional projected light guide column structure |
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2014
- 2014-08-20 CN CN201410413356.8A patent/CN105465738A/en active Pending
Patent Citations (4)
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|---|---|---|---|---|
| CN101556023A (en) * | 2009-05-14 | 2009-10-14 | 上海广电光电子有限公司 | LED light source with wide-angle lens |
| CN101639181A (en) * | 2009-08-07 | 2010-02-03 | 广东昭信光电科技有限公司 | Direct type backlighting system |
| CN202691910U (en) * | 2012-04-06 | 2013-01-23 | 鑫日东光电股份有限公司 | Omnidirectional projected light guide column structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290818A (en) * | 2017-07-31 | 2017-10-24 | 惠州拓邦电气技术有限公司 | A kind of light guide structure and device |
| CN110954982A (en) * | 2018-09-27 | 2020-04-03 | 纬创资通股份有限公司 | Light guide device and indicating equipment with light-emitting function |
| US11662515B2 (en) | 2018-09-27 | 2023-05-30 | Wistron Corporation | Light guiding device and indication apparatus |
| CN117613175A (en) * | 2024-01-19 | 2024-02-27 | 深圳市华皓伟业光电有限公司 | LED packaging structure |
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Address after: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Applicant after: Hisense Visual Technology Co., Ltd. Address before: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Applicant before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |
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