CN203686878U - Novel LED backlight lens and liquid crystal display backlight screen - Google Patents
Novel LED backlight lens and liquid crystal display backlight screen Download PDFInfo
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- CN203686878U CN203686878U CN201320854240.9U CN201320854240U CN203686878U CN 203686878 U CN203686878 U CN 203686878U CN 201320854240 U CN201320854240 U CN 201320854240U CN 203686878 U CN203686878 U CN 203686878U
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- 239000000725 suspension Substances 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000011295 pitch Substances 0.000 description 3
- 238000005094 computer simulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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Abstract
The utility model discloses a novel LED backlight lens and a liquid crystal display backlight screen. The novel LED backlight lens comprises a lens body and a column foot arranged on the bottom surface of the lens body, the lens body is of a round table structure with the upper portion wide and the lower portion narrow, the bottom surface of the lens body is provided with an incident plane, the side of the lens body is a first refraction plane, the top surface of the lens body is a second refraction and reflection plane, and the incident plane is a recessed inverted cone-shaped curved surface. On the premise that compared with an existing refraction optical lens, LED arrangement gaps are identical, the goal of similar brightness uniformity can still be achieved after the projection distance is shortened by a half.
Description
Technical field
The utility model relates to light emitting diode (LED, LightEmittingDiode) lens technologies field, is specifically related to Novel LED backlight lens and LCD backlight screen.
Background technology
LED light source is because its energy-conserving and environment-protective are widely used in fields such as illumination and LCD backlight screens.Particularly in LCD backlight screen, use in enormous quantities, created social value and commercial value widely.LED liquid crystal backlight mainly contains 2 kinds of arrangements:
1, side entering type, utilizes LED to coordinate LGP to realize the uniform brilliance of screen.
2, straight-down negative, utilizes LED to coordinate optical lens to realize uniform brilliance at screen rear direct irradiation screen.
At present, in straight-down negative arrangement, many use refraction type optical lenses (as shown in Figure 1,), this kind of lens are because refractive index and the total reflection effect of material affect, and due to the limitation of optical texture, limiting under the prerequisite of LED arrangement pitches, between LED light source and lens combination and the screen of LCD backlight screen, must there is higher projection distance, just can make irradiated screen intensity even, on screen, obtain uniform brilliance.Obviously, the increase of projection distance can increase the cost of LCD backlight screen, and does not meet user LCD backlight is shielded to gossamery requirement.
Utility model content
The purpose of this utility model is to disclose Novel LED backlight lens and LCD backlight screen, solve the problem that existing refraction type optical lens need to have higher projection distance and could obtain on screen uniform brilliance, further solved the problem that cost is high, thickness is large of LCD backlight screen.
For achieving the above object, the utility model adopts following technical scheme:
Novel LED backlight lens, comprise lens body and the suspension column of being located at lens body bottom surface, lens body is frustum cone structure wide at the top and narrow at the bottom, and lens body bottom surface is provided with the plane of incidence, lens body side is first refractive face, and the end face of lens body is the second refraction and reflecting surface; The plane of incidence is the back taper curved surface of indent.
Further, the plane of incidence outline line of the described plane of incidence on longitudinal section is outwards outstanding camber line structure.
Further, at least three described suspension columns distribute around the described plane of incidence.
Further, the described plane of incidence and link position place, described lens body bottom surface are provided with hierarchic structure.
Further, described the second refraction and reflecting surface are also the back taper curved surface of indent.
Further, described the second refraction and the refraction of reflecting surface on longitudinal section and reflecting surface outline line be outwards give prominence to camber line structure.
Further, described in the Area Ratio of the described plane of incidence the second refraction little with the area of reflecting surface, and the plane of incidence and the second refraction and reflecting surface coaxial cooperation.
The invention also discloses LCD backlight screen, comprise Novel LED backlight lens described in reflectance coating, diffuser plate and above-mentioned any one, radiation film and diffuser plate spacing 15mm; Several Novel LED backlight lens are located on reflectance coating; LED light source is located at described lens body below, and LED light source is positioned at the position of matching with the described plane of incidence.
Further, described several Novel LED backlight lens rectangular array on described reflective membrane is arranged, line displacement 110mm, line skew 75mm.
Further, also comprise bright enhancement film and liquid crystal panel, bright enhancement film covers on described diffuser plate, and liquid crystal panel covers on bright enhancement film.
Compared with prior art, the beneficial effects of the utility model:
Novel LED backlight lens in the utility model adopt above structure, a kind of brand-new refraction type optics Novel LED backlight lens are provided, utilize the first principles computations secondary computer emulation technology of optics, realize and having compared under the prerequisite that LED arrangement pitches is identical with existing refraction type optical lens, projection distance has been reduced to half (realize large apart from high than) and still can obtain the object of the same briliancy uniformity.
The utility model is made the second refraction of the plane of incidence, emergent ray after the back taper curved surface of indent to a certain degree with reflecting surface, it is larger that the light that LED light source sends entered the light scope of launching after lens, while using on LCD backlight screen, the backlight effect of LCD backlight screen is more even; Adopt the structure of trapezoidal round platform, frustum cone side (being first refractive face) is level and smooth cambered surface, more easily processing, and processing technology difficulty is low, and working (machining) efficiency is high.
LCD backlight screen in the utility model adopts above structure, utilizes reflection law, the law of refraction and the computer simulation emulation software of optics, under above structural condition, projection distance is narrowed down to 15mm, and makes luminance uniformity reach optimum efficiency; Novel LED backlight lens line displacement 110mm, line skew 75mm is the best distribution mode facts have proved.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic perspective view one of Novel LED backlight lens embodiment one in the utility model;
Fig. 2 is embodiment illustrated in fig. 1 one schematic perspective view two;
Fig. 3 is embodiment illustrated in fig. 1 one schematic bottom view;
Fig. 4 is the generalized section of Fig. 3 along A-A direction;
Fig. 5 is embodiment illustrated in fig. 1 one light refraction path schematic diagram, and in figure, arrow represents light emission direction;
Fig. 6 is the structural representation of LCD backlight screen embodiment bis-in the utility model, and in figure, arrow represents light emission direction;
Fig. 7 is the distribution schematic diagram of Novel LED backlight lens on reflectance coating in Fig. 6;
In figure, 10-Novel LED backlight lens; 1-lens body; 11-lens body bottom surface; 2-suspension column; The 3-plane of incidence; 31-plane of incidence outline line; 4-first refractive face; 5-second reflects and reflecting surface; 51-refraction and reflecting surface outline line; 6-hierarchic structure; 20-LCD backlight screen; 21-reflectance coating; 22-diffuser plate; 23-bright enhancement film; 24-liquid crystal panel; 25-LED light source.
Detailed description of the invention
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, instead of whole embodiment.
Embodiment mono-
Embodiment mono-Novel LED backlight lens 10 as shown in Figures 1 to 5, comprise lens body 1 and the suspension column 2 of being located at lens body bottom surface 11, lens body 1 is frustum cone structure wide at the top and narrow at the bottom, lens body bottom surface 11 is provided with the plane of incidence 3, lens body side is first refractive face 4, and the end face of lens body is the second refraction and reflecting surface 5; The plane of incidence 3 is the back taper curved surface of indent.
The plane of incidence outline line 31 of the plane of incidence 3 on longitudinal section is outwards outstanding camber line structure.The plane of incidence 3 and 11 link position places, lens body bottom surface are provided with hierarchic structure 6.Three suspension columns 2 distribute around the plane of incidence 3.
The second refraction and reflecting surface 5 are also the back taper curved surface of indent.The second refraction and the refraction of reflecting surface 5 on longitudinal section and reflecting surface outline line 51 be outwards give prominence to camber line structure.Area Ratio second refraction of the plane of incidence 3 is little with the area of reflecting surface 5, and the plane of incidence 3 and the second refraction and reflecting surface 5 coaxial cooperation.
As to the further illustrating of embodiment mono-, its operation principle is now described: LED light source 25 is located at the plane of incidence 3 belows; The light that LED light source 25 sends is injected from the plane of incidence 3, part light reflects from first refractive face 4 after the second refraction and reflecting surface 5 reflections, part light directly reflects from the second refraction and reflecting surface 5, also has part light directly to reflect from first refractive face 4.Adopt above structure, realized and having compared under the prerequisite that LED arrangement pitches is identical with existing refraction type optical lens, projection distance is reduced to half (realize large apart from high than) and still can obtain the object of the same briliancy uniformity.
Other structure of embodiment mono-Novel LED backlight lens is referring to prior art.
Embodiment bis-
Embodiment bis-LCD backlight screens 20 as shown in Figure 6 and Figure 7, comprise Novel LED backlight lens 10 shown in reflectance coating 21, diffuser plate 22, three layers of bright enhancement film 23, liquid crystal panel 24, LED light source 25 and embodiment mono-, the space D between radiation film 21 and diffuser plate 22 is 15mm; Several Novel LED backlight lens 10 are located on reflectance coating 21, and LED light source 25 is located at base station 1 below, and between three suspension columns 2.
Bright enhancement film 23 in the present embodiment covers on diffuser plate 22, and liquid crystal panel 24 covers on bright enhancement film 23.Several Novel LED backlight lens 10 in the present embodiment are rectangular array layout on reflective membrane 21, and line displacement A is 110mm, and line skew B is 75mm.The height of suspension column 2 is higher than the height of LED light source 25.
In embodiment bis-, the quantity of bright enhancement film 23 is three layers, but is not limited to three layers, can increase and decrease according to demand.
Embodiment bis-adopts above structure, utilizes reflection law, the law of refraction and the computer simulation emulation software of optics, under above structural condition, projection distance is narrowed down to 15mm, and makes luminance uniformity reach optimum efficiency.
Other structure of embodiment bis-LCD backlight screens is referring to prior art.
The utility model is not limited to above-mentioned embodiment, if various changes of the present utility model or modification are not departed to spirit and scope of the present utility model, if within these changes and modification belong to claim of the present utility model and equivalent technologies scope, the utility model is also intended to comprise these changes and modification.
Claims (10)
1. Novel LED backlight lens, it is characterized in that: comprise lens body and the suspension column of being located at lens body bottom surface, lens body is frustum cone structure wide at the top and narrow at the bottom, and lens body bottom surface is provided with the plane of incidence, lens body side is first refractive face, and the end face of lens body is the second refraction and reflecting surface; The plane of incidence is the back taper curved surface of indent.
2. Novel LED backlight lens as claimed in claim 1, is characterized in that: the plane of incidence outline line of the described plane of incidence on longitudinal section is outwards outstanding camber line structure.
3. Novel LED backlight lens as claimed in claim 1 or 2, is characterized in that: at least three described suspension columns distribute around the described plane of incidence.
4. Novel LED backlight lens as claimed in claim 1 or 2, is characterized in that: the described plane of incidence and link position place, described lens body bottom surface are provided with hierarchic structure.
5. Novel LED backlight lens as claimed in claim 1 or 2, is characterized in that: described the second refraction and reflecting surface are also the back taper curved surface of indent.
6. Novel LED backlight lens as claimed in claim 5, is characterized in that: described the second refraction with reflecting surface the refraction on longitudinal section and reflecting surface outline line be outwards give prominence to camber line structure.
7. Novel LED backlight lens as claimed in claim 5, is characterized in that: described in the Area Ratio of the described plane of incidence the second refraction little with the area of reflecting surface, and the plane of incidence and the second refraction and reflecting surface coaxial cooperation.
8. LCD backlight screen, is characterized in that: comprise Novel LED backlight lens described in reflectance coating, diffuser plate and above-mentioned any one, radiation film and diffuser plate spacing 15mm; Several Novel LED backlight lens are located on reflectance coating; LED light source is located at described lens body below, and LED light source is positioned at the position of matching with the described plane of incidence.
9. LCD backlight shields as claimed in claim 8, it is characterized in that: described several Novel LED backlight lens rectangular array on described reflective membrane is arranged, line displacement 110mm, line skew 75mm.
10. LCD backlight screen as described in claim 8 or 9, is characterized in that: also comprise bright enhancement film and liquid crystal panel, bright enhancement film covers on described diffuser plate, and liquid crystal panel covers on bright enhancement film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320854240.9U CN203686878U (en) | 2013-12-23 | 2013-12-23 | Novel LED backlight lens and liquid crystal display backlight screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320854240.9U CN203686878U (en) | 2013-12-23 | 2013-12-23 | Novel LED backlight lens and liquid crystal display backlight screen |
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| CN203686878U true CN203686878U (en) | 2014-07-02 |
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| CN201320854240.9U Expired - Lifetime CN203686878U (en) | 2013-12-23 | 2013-12-23 | Novel LED backlight lens and liquid crystal display backlight screen |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738982A (en) * | 2014-12-29 | 2016-07-06 | Lg电子株式会社 | Optical lens and display device including the same |
| CN106287569A (en) * | 2015-05-26 | 2017-01-04 | 瑞仪光电(苏州)有限公司 | Optical lens, backlight module |
| CN106959554A (en) * | 2017-05-08 | 2017-07-18 | 胜蓝科技股份有限公司 | A kind of reflective astigmat, backlight module and liquid crystal display device |
| CN109799645A (en) * | 2019-03-15 | 2019-05-24 | 惠州市华星光电技术有限公司 | Backlight module and display device |
| CN110208984A (en) * | 2019-05-28 | 2019-09-06 | 惠州市华星光电技术有限公司 | Backing structure and display panel |
| CN113534532A (en) * | 2020-04-22 | 2021-10-22 | 华为技术有限公司 | Lens, backlight module and terminal equipment |
-
2013
- 2013-12-23 CN CN201320854240.9U patent/CN203686878U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738982A (en) * | 2014-12-29 | 2016-07-06 | Lg电子株式会社 | Optical lens and display device including the same |
| US9971195B2 (en) | 2014-12-29 | 2018-05-15 | Lg Electronics Inc. | Optical lens and display device including the same |
| CN106287569A (en) * | 2015-05-26 | 2017-01-04 | 瑞仪光电(苏州)有限公司 | Optical lens, backlight module |
| CN106959554A (en) * | 2017-05-08 | 2017-07-18 | 胜蓝科技股份有限公司 | A kind of reflective astigmat, backlight module and liquid crystal display device |
| CN106959554B (en) * | 2017-05-08 | 2023-06-27 | 胜蓝科技股份有限公司 | Reflective astigmatic lens, backlight module and liquid crystal display device |
| CN109799645A (en) * | 2019-03-15 | 2019-05-24 | 惠州市华星光电技术有限公司 | Backlight module and display device |
| CN109799645B (en) * | 2019-03-15 | 2022-05-31 | 惠州市华星光电技术有限公司 | Backlight module and display device |
| CN110208984A (en) * | 2019-05-28 | 2019-09-06 | 惠州市华星光电技术有限公司 | Backing structure and display panel |
| CN113534532A (en) * | 2020-04-22 | 2021-10-22 | 华为技术有限公司 | Lens, backlight module and terminal equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |
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| CX01 | Expiry of patent term |