CN105158833A - Composite reflector plate, backlight source, and display device - Google Patents
Composite reflector plate, backlight source, and display device Download PDFInfo
- Publication number
- CN105158833A CN105158833A CN201510674346.4A CN201510674346A CN105158833A CN 105158833 A CN105158833 A CN 105158833A CN 201510674346 A CN201510674346 A CN 201510674346A CN 105158833 A CN105158833 A CN 105158833A
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- Prior art keywords
- reflection sheet
- guide plate
- light guide
- light
- composite reflection
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/12—Reflex reflectors
- G02B5/126—Reflex reflectors including curved refracting surface
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention provides a composite reflector plate, a backlight source, and a display device in order to solve a problem of high product cost or complex manufacture process for increasing the light utilization rate of a backlight source in the prior art. Since the composite reflector plate comprises a reflection layer with prism structure, the prism structure may enable the light to be emitted along the direction (positive visual angle direction) basically vertical to the composite reflector plate when the light is incident along the lateral direction.
Description
Technical field
The present invention relates to display technique field, particularly, relate to a kind of composite reflection sheet, backlight, display device.
Background technology
At present, the power problems for products such as mobile phone, reader, flat boards is more and more outstanding, in order to promote Consumer's Experience, can promote as power supply battery capacity or, the energy of more effective battery, such as, improves the utilization ratio of the light launched.
When battery capacity promotes comparatively difficult, the utilization ratio promoting the light of backlight just seems important all the more.
For lifting backlight to the problem of the utilization factor of light, current effect comparatively significantly comprises: the brightness enhancement film (DualBrightnessEnhancementFilm using 3M company, DBEF), wherein, brightness enhancement film, by the light of selective reflecting light source, makes it does not absorbed, and the light at full visual angle is re-used, thus, the brightness at positive visual angle is made to increase;
Or use the technology having prism structure light guide plate and coordinate reversed prism, the brightness realized in positive view directions increases.
But the valuable product of 3M company adopts to be had prism structure light guide plate and coordinates the technology of reversed prism then because complex manufacturing technology, the difficulty with prism structure light guide plate is large, volume production exists technical barrier.
Summary of the invention
The adopted technical scheme that solves the problem is a kind of composite reflection sheet, backlight, display device.
The invention provides a kind of composite reflection sheet, comprise the reflection horizon with prism structure.
Preferably, the side in described reflection horizon is provided with the first protective seam.
Preferably, the opposite side in described reflection horizon is provided with the second protective seam.
Preferably, the thickness 130 μm-200 μm of described composite reflection sheet.
Preferably, the cross sectional shape of described prism structure is triangle.
Preferably, the cross sectional shape of described prism structure to be base angle the be isosceles triangle of 30 °-60 °.
Another object of the present invention is to provide a kind of backlight, the above-mentioned composite reflection sheet comprising light guide plate and arrange in described light guide plate side.
Preferably, contact with the described light guide plate refractive index of protective seam of side and the specific refractivity of described light guide plate of described composite reflection sheet is less than 0.5.
Preferably, the contact refractive index of protective seam of side of described composite reflection sheet and described light guide plate is equal with the refractive index of described light guide plate.
Preferably, the side relative with described composite reflection sheet of described light guide plate is provided with reversed prism; The rib of described reversed prism is arranged with the rib of the prism structure of described composite reflection sheet is mutually vertical.
Preferably, the cross sectional shape of described reversed prism is triangle.
Preferably, the cross sectional shape of described reversed prism to be base angle the be isosceles triangle of 30 °-60 °.
Preferably, the side of described light guide plate is provided with for making light that irreflexive pattern occur, and the described figuratum side of light guide plate tool is near described composite reflection sheet.
Another object of the present invention is to provide a kind of display device, comprises above-mentioned backlight.
A kind of composite reflection sheet provided by the invention, backlight, display device, because this composite reflection sheet includes the reflection horizon of prism structure, when light is incident from side direction, prism structure can make light penetrate along the direction (positive view directions) of basic vertical described composite reflection sheet.
Accompanying drawing explanation
Fig. 1 is the structural representation of composite reflection sheet in the embodiment of the present invention 1;
Fig. 2 is the structural representation of backlight in the embodiment of the present invention 2;
Fig. 3 be in the embodiment of the present invention 2 in backlight light by the index path inciding outgoing;
Fig. 4 is light refraction index path in reversed prism in the embodiment of the present invention 2;
Wherein, 1. composite reflection sheet; 11. reflection horizon; 111. prism structure; The rib of 1111. prism structures; 12. first protective seams; 13. second protective seams; 2. light guide plate; 21. patterns; 3. reversed prism; The rib of 31. reversed prism.
Embodiment
For making those skilled in the art understand technical scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Embodiment 1:
As shown in Figure 1, the present embodiment provides a kind of composite reflection sheet, comprises the reflection horizon 11 with prism structure 111.
The composite reflection sheet 1 that this enforcement provides, because this composite reflection sheet 1 includes the reflection horizon 11 of prism structure 111, when light is incident from side direction, prism structure 111 can make light penetrate along the direction of basic vertical described composite reflection sheet 1.
Preferably, the side in described reflection horizon 11 is provided with the first protective seam 12.Described first protective seam 12 can protect prism structure 111 to be subject to unnecessary wearing and tearing and damage; Meanwhile, the surface flattening of composite reflection sheet 1 can be made, to facilitate coordinating of composite reflection sheet 1 and other assembly.
Preferably, the opposite side in described reflection horizon 11 is provided with the second protective seam 13.Described second protective seam 13 can protect prism structure 111 to be subject to unnecessary wearing and tearing and damage; Meanwhile, the surface flattening of the opposite side of composite reflection sheet 1 can be made, to facilitate coordinating of composite reflection sheet 1 and other assembly.
The thickness of general reflector plate is between 100 μm-200 μm, and the reflectivity of thickness to reflector plate of certain limit internal reflection sheet has certain influence, and the thickness of reflector plate is thicker, and reflectivity is higher, exceedes rear little on reflectivity impact;
In addition, the display product product comprising reflector plate has lightening demand, preferably, and the thickness of described composite reflection sheet 1 130 μm-200 μm.
Preferably, the cross sectional shape of described prism structure 111 is triangle.Can reflect away along the direction perpendicular to composite reflection sheet 1 to greatest extent from side direction with the light of various angle incidence like this.
Preferably, the cross sectional shape of described prism structure 111 to be base angle the be isosceles triangle of 30 °-60 °.This structure can make that prism structure 111 is more effective to be reflected away from side direction along perpendicular to the direction of composite reflection sheet 1 with the light of various angle incidence.
Should be understood that, reflection horizon 11 can adopt the potpourri of polyethylene terephthalate and expanded material to make; Particularly, can by this potpourri fusion drawn being formed thin layer and preparing through corresponding mould, the protective seam (the second protective seam 13) penetrating contrary side, direction with light reflection together can make with reflection horizon 11, also can make separately; Can make separately for the protective seam (the first protective seam 12) that light reflection penetrates identical side, direction; The concrete preparation method of reflection horizon 11 and protective seam is prior art category, and this is no longer going to repeat them.
Embodiment 2:
As in Figure 2-4, the present embodiment provides a kind of backlight, the above-mentioned composite reflection sheet 1 comprising light guide plate 2 and arrange in described light guide plate 2 side.
The backlight that the present embodiment provides, because this composite reflection sheet 1 includes the reflection horizon 11 of prism structure 111, when the light of light emitting source is incident from side direction, prism structure 111 can make light penetrate along the direction of basic vertical described composite reflection sheet 1, add the brightness with the light of light guide plate 2 vertical direction (being equivalent to the positive visual angle of display device), improve the utilization factor of source light.
Optionally, contact with described light guide plate 2 refractive index of protective seam of side and the specific refractivity of described light guide plate 2 of described composite reflection sheet 1 is less than 0.5.
Specific refractivity between such protective seam and light guide plate 2 is less, and the light that can effectively reduce light source is totally reflected at the medium intersection of protective seam and light guide plate 2, promotes the efficiency of light.
Should be understood that; the material that current light guide plate 2 is commonly used is polymethylmethacrylate (PMMA), polycarbonate (PC) and HPMA (MA); wherein; the refractive index of polymethylmethacrylate, polycarbonate (PC) and HPMA (MA) is respectively 1.49,1.58,1.53; can select with reference to the refractive index of light guide plate 2 when selecting the material of protective seam like this, the specific refractivity of both guarantees is less than 0.5.
Preferably, the contact refractive index of the first protective seam 12 of side of described composite reflection sheet 1 and described light guide plate 2 is equal with the refractive index of described light guide plate 2.The light that more can effectively reduce light source is like this totally reflected with the medium intersection of light guide plate 2 at the first protective seam 12, promotes the efficiency of light.
As shown in Figure 2, the side relative with described composite reflection sheet 1 of described light guide plate 2 is provided with reversed prism 3; The rib 31 of described reversed prism is arranged with the rib of the prism structure 111 of described composite reflection sheet 1 is mutually vertical.
Such reversed prism 3, in the collecting of the rib enterprising line light source incident light in orthogonal direction of the prism structure 111 with described composite reflection sheet 1, penetrates from the direction perpendicular to light guide plate 2, more effectively make use of light source, adds the brightness of emergent light.
As shown in Figure 4, the cross sectional shape of described reversed prism 3 is triangle.Can reflect away along the direction perpendicular to light guide plate 2 to greatest extent from side direction with the light of various angle incidence like this.
As shown in Figure 4, the cross sectional shape of described reversed prism 3 to be base angle the be isosceles triangle of 30 °-60 °.This structure can make that reversed prism 3 is more effective to be reflected away from side direction along perpendicular to the direction of light guide plate 2 with the light of various angle incidence.
As shown in Figure 2, the side of described light guide plate 2 is provided with for making light that irreflexive pattern 21 occur, and described light guide plate 2 has the side of pattern 21 near described composite reflection sheet 1.
Should be understood that, in light guide plate 2, the existence of pattern 21 is in order to the total reflection destroyed in light guide plate 2 makes light overflow from light guide plate 2, and more light is reflected by composite reflection sheet 1, promotes light efficiency; Normal daylight is more in the offside outgoing of pattern 21, and the side with pattern 21 of existing light guide plate 2 is near light emission side, and the light causing light to penetrate in light guide plate 2 light emission side like this reduces, reduces the utilization ratio of the light that light source occurs;
The side with pattern 21 of above-mentioned light guide plate 2, near described composite reflection sheet 1, can make more light from the light emission side outgoing of light guide plate 2, improve the utilization factor that light source sends light; Simultaneously pattern 21 pairs of light can also play certain diffusion effect, the brightness of whole backlight is seemed evenly.
From Fig. 2-4, the light that LED launches transmits in light guide plate 2 inner total reflection, after being subject to the impact of the pattern 21 of light guide plate 2, full transmitting is destroyed, light is overflowed with the lower surface of different angles from light guide plate 2, because the refractive index of the refractive index of the transparent material of the first protective seam 12 of composite reflection sheet and the material of formation light guide plate 2 is close, light almost incides in composite reflection sheet according to former direction, the prism structure 111 in the reflection horizon 11 of composite reflection sheet is by reflecting light collection incident for major part in the direction outgoing close to vertical light guide plate 2 plane, light is after light guide plate 2, again by the refraction action (light converges by the direction further perpendicular at the rib of the prism structure 111 with reflection horizon 11) of reversed prism 3, thus promote the utilization factor of light, reach the effect of the brightness promoting positive visual angle.
Embodiment 3
The present embodiment provides a kind of display device, comprises above-mentioned backlight.
The display device that the present embodiment provides is owing to comprising above-mentioned backlight, so display device can promote the utilization factor of light; Meanwhile, there is the effect of the brightness promoting positive visual angle.
Be understandable that, the illustrative embodiments that above embodiment is only used to principle of the present invention is described and adopts, but the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (14)
1. a composite reflection sheet, is characterized in that, comprises the reflection horizon with prism structure.
2. composite reflection sheet as claimed in claim 1, it is characterized in that, the side in described reflection horizon is provided with the first protective seam.
3. composite reflection sheet as claimed in claim 2, it is characterized in that, the opposite side in described reflection horizon is provided with the second protective seam.
4. composite reflection sheet as claimed in claim 1, is characterized in that, the thickness of described composite reflection sheet 130 μm-200 μm.
5. composite reflection sheet as claimed in claim 1, it is characterized in that, the cross sectional shape of described prism structure is triangle.
6. composite reflection sheet as claimed in claim 5, is characterized in that, the cross sectional shape of described prism structure to be base angle the be isosceles triangle of 30 °-60 °.
7. a backlight, is characterized in that, the composite reflection sheet as described in any one of claim 1-6 comprising light guide plate and arrange in described light guide plate side.
8. backlight as claimed in claim 7, is characterized in that, contact with the described light guide plate refractive index of protective seam of side and the specific refractivity of described light guide plate of described composite reflection sheet is less than 0.5.
9. backlight as claimed in claim 8, is characterized in that, the contact refractive index of protective seam of side of described composite reflection sheet and described light guide plate is equal with the refractive index of described light guide plate.
10. backlight as claimed in claim 7, it is characterized in that, the side relative with described composite reflection sheet of described light guide plate is provided with reversed prism; The rib of described reversed prism is arranged with the rib of the prism structure of described composite reflection sheet is mutually vertical.
11. backlights as claimed in claim 10, is characterized in that, the cross sectional shape of described reversed prism is triangle.
12. backlights as claimed in claim 11, is characterized in that, the cross sectional shape of described reversed prism to be base angle the be isosceles triangle of 30 °-60 °.
13. backlights as claimed in claim 7, is characterized in that, the side of described light guide plate is provided with for making light that irreflexive pattern occur, and the described figuratum side of light guide plate tool is near described composite reflection sheet.
14. 1 kinds of display device, is characterized in that, comprise the backlight as described in any one of claim 7-13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510674346.4A CN105158833A (en) | 2015-10-16 | 2015-10-16 | Composite reflector plate, backlight source, and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510674346.4A CN105158833A (en) | 2015-10-16 | 2015-10-16 | Composite reflector plate, backlight source, and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105158833A true CN105158833A (en) | 2015-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510674346.4A Pending CN105158833A (en) | 2015-10-16 | 2015-10-16 | Composite reflector plate, backlight source, and display device |
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| CN (1) | CN105158833A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112180478A (en) * | 2020-09-03 | 2021-01-05 | 核桃智能科技（常州）有限公司 | Air imaging lens |
| CN114311921A (en) * | 2021-12-30 | 2022-04-12 | 深圳市金光宝光电有限公司 | Eye-protecting full-vision cornea |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1629691A (en) * | 2003-12-19 | 2005-06-22 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN1746741A (en) * | 2004-09-10 | 2006-03-15 | 舜茂科技股份有限公司 | High-brilliance light-negative module |
| CN101349397A (en) * | 2007-07-20 | 2009-01-21 | 深圳大学 | Backlight system and microstructure reflector plate |
| TW201100924A (en) * | 2009-06-24 | 2011-01-01 | Wintek Corp | Backlight module |
| CN102879841A (en) * | 2012-09-10 | 2013-01-16 | 常州华日升反光材料股份有限公司 | Prism type light reflection film |
| CN203413546U (en) * | 2013-06-28 | 2014-01-29 | 3M材料技术（广州）有限公司 | Optical film layer, backlight module and liquid crystal display device |
| CN104006353A (en) * | 2013-02-22 | 2014-08-27 | 扬升照明股份有限公司 | Reflection piece, light source module and display device |
-
2015
- 2015-10-16 CN CN201510674346.4A patent/CN105158833A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1629691A (en) * | 2003-12-19 | 2005-06-22 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN1746741A (en) * | 2004-09-10 | 2006-03-15 | 舜茂科技股份有限公司 | High-brilliance light-negative module |
| CN101349397A (en) * | 2007-07-20 | 2009-01-21 | 深圳大学 | Backlight system and microstructure reflector plate |
| TW201100924A (en) * | 2009-06-24 | 2011-01-01 | Wintek Corp | Backlight module |
| CN102879841A (en) * | 2012-09-10 | 2013-01-16 | 常州华日升反光材料股份有限公司 | Prism type light reflection film |
| CN104006353A (en) * | 2013-02-22 | 2014-08-27 | 扬升照明股份有限公司 | Reflection piece, light source module and display device |
| CN203413546U (en) * | 2013-06-28 | 2014-01-29 | 3M材料技术（广州）有限公司 | Optical film layer, backlight module and liquid crystal display device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112180478A (en) * | 2020-09-03 | 2021-01-05 | 核桃智能科技（常州）有限公司 | Air imaging lens |
| CN112180478B (en) * | 2020-09-03 | 2022-03-18 | 核桃智能科技（常州）有限公司 | Air imaging lens |
| CN114311921A (en) * | 2021-12-30 | 2022-04-12 | 深圳市金光宝光电有限公司 | Eye-protecting full-vision cornea |
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Application publication date: 20151216 |
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| RJ01 | Rejection of invention patent application after publication |