CN1637509A - Reflecting sheet in improved structure - Google Patents
Reflecting sheet in improved structure Download PDFInfo
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- CN1637509A CN1637509A CNA200410088769XA CN200410088769A CN1637509A CN 1637509 A CN1637509 A CN 1637509A CN A200410088769X A CNA200410088769X A CN A200410088769XA CN 200410088769 A CN200410088769 A CN 200410088769A CN 1637509 A CN1637509 A CN 1637509A
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- reflector plate
- reflector
- light
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- diffusion layer
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Abstract
The reflecting sheet in improved structure includes at least one substrate; one reflecting metal layer on the substrate; and one diffused layer on the reflecting metal layer. The reflecting sheet in improved structure has raised reflecting efficiency and makes the light diffusion homogeneous.
Description
Technical field
The present invention relates to a kind of improvement structure back reflection sheet, particularly a kind ofly improve reflection efficiency and make the more uniform reflector plate of light diffusion.
Background technology
Flat-panel screens (Flat Panel Display) one of the proper noun that attracts most attention in recent years of can saying so, traditional C RT display meet with new comprehensive challenge of display technique from generation to generation finally behind the many decades of occuping market.No matter be LCD (LCD), plasma display panel (PDP) or organic electro-luminescent display (OLED), all light, thin, short, little because of having, heat and power consumption is low and advantage such as radiationless injury is almost significantly grabbed consumer market.Wherein rapid with Thin Film Transistor-LCD (TFT-LCD) technical progress again, and with the scale of investment and the volume production actual achievement of reality, declare the epoch of high quality display and arrive.To large-sized TV applications, find that LCD has become the major transformation of the applicating technology beginning of this century from undersized colored mobile phone.
But the primary structure rough segmentation of LCD becomes panel and backlight module two large divisions.Wherein the processing procedure of panel comprises ITO electro-conductive glass, liquid crystal, alignment film, colored filter, polaroid, drive IC etc.; Backlight module comprises fluorescent tube, light guide plate and blooming miscellaneous.The performance of the whole optics of LCD is subjected to the reciprocal effect of all materials in the module.Wherein blooming has more been played the part of the key player on screen intensity, uniformity coefficient, contrast and visual angle.Along with the liquid crystal panel size is done bigger and bigger, resolution is more and more higher, the deviser increases incident light quantity by increasing the fluorescent tube number or improving tube current on the one hand, also manage to increase panel aperture opening ratio (Aperture ratio) on the other hand to alleviate the loss of backlight, more positive importing wide viewing angle LCD alignment processing procedure, as MVA (Multi-domain vertical alignment), ASV (Advanced Super V) or IPS (In-plane switching) etc., LCD is presented better view and admire angle and color.Unfortunately if improve brightness by increasing fluorescent tube merely, not only cause too much heat to be accumulated among mechanism easily, influence the life-span and the quality of other material, power consumption simultaneously is excessive, can't satisfy many information products and need be dependent on the requirement that battery uses with off-line.The high-order liquid crystal panel of migrating then can involve product orientation, make technical factors such as cost factor such as qualification rate and electrode design, therefore in backlight module, utilize blooming miscellaneous so far, provide a kind of and can improve overall brightness, the performance that makes light source do full blast but need not changed any Cell design or be consumed the way of additional energy source, is still and reaches the most economical and easy solution of design object.Therefore, a kind of overall brightness that improves, the reflector plate that the performance that makes light source do full blast but need not changed any Cell design or consumption additional energy source promptly is developed out.
The function that reflector plate is played the part of at backlight module has two: the first kinds to be the light that sends from the lamp source, and usable reflection is to light guide plate, and usefulness depends on the reflectivity of direct reflection; Second kind is that light guide plate is returned in the light scattered reflection of leaking from light guide plate, also therefore makes the planar light in the parallel light guide plate of advancing change into vertical light guide plate direction and then effusion light guide plate; Its common purpose was hoped for exactly in the reflection incident light time, made the reflection efficiency height and the raising overall brightness.But this traditional reflective sheet but has reflecting effect desirable not to the utmost or make reflection ray diffusion shortcoming uniformly inadequately.
As shown in Figure 1, traditional backlight module 1 is made up of a reflector plate 11, a cold-cathode tube 12, a diffuser plate 13 and two diffusion sheets 14; As shown in Figure 2, the main material of reflector plate 11 is PET (polyethylene terephthalate), and its surface coated one contains TiO
2The diffusion layer 111 of (titania) is treated TiO
2After (titania) is done admittedly, can form the atomization surface of a white shape, make light spread more evenly, and have certain reflecting effect, also therefore be widely used; But also because the cause that diffusion layer 111 spreads light, cause reflectivity not ideal enough, need stronger light source, thereby increase electric current and power consumption, and under the situation of the more strong light source of needs, the device (as mobile phone, PDA) that generally has the small size two-d display panel is limited because of the space, can't insert more light sources, so be used for having in the planar display surface panel assembly (as computing machine LCD) of large-size at present more.
As shown in Figure 3, the main material of another reflector plate 11 ' of tradition is PET (polyethylene terephthalate) and TiO
2(titania) mixes; This reflector plate 11 ' is by TiO in it
2Bubble 111 ' with the light scattering again of incident, make the more even of light diffusion, and can reach certain reflecting effect, also therefore be widely used; But also because the cause of bubble 111 ' scattering, cause reflectivity not ideal enough, need stronger light source, thereby increase electric current and power consumption, and under the situation of the more strong light source of needs, the device (as mobile phone, PDA) that generally has the small size two-d display panel is limited because of the space, can't insert more light sources, so be used for having in the planar display surface panel assembly (as computing machine LCD) of large-size at present more.
As shown in Figure 4, the main material of traditional another reflector plate 11 is PET (polyethylene terephthalate), and its surface coated one contains the metallic reflector 112 of silver or aluminium, with the light reflection, reflectivity is greatly improved by metallic reflector 112; But the light reflex time can produce the distribution of light sources inequality, and when reflector plate because of assembling or make to produce fold and flaw or because of high temperature deformation, then Fan She light can produce irregular reflection and maybe can't reflect, and causes the picture demonstration bad.So, when being used to have large-sized planar display surface panel assembly (as computing machine LCD), reflector plate is easier in assembling or make generation fold and flaw or because of high temperature deformation, causing the bad zone of picture obvious especially, unfavorable use.Minimum for above-mentioned shortcoming is dropped to, be used for having in the planar display surface panel assembly (as mobile phone, PDA) of reduced size at present more.
In view of this, the creator among the present invention accumulates with being engaged in the sector experience for many years, and through concentrating on studies and leaving, develops a kind of reflector plate finally, can reach and improve reflection efficiency and make the diffusion of light more even.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of reflector plate, reaches the effect that improves reflection efficiency.
Another object of the present invention is to provide a kind of reflector plate, reach the more uniform effect of light diffusion.For reaching above-mentioned purpose, the reflector plate among the present invention comprises at least:
One base material;
One metallic reflector, this metallic reflector is located at the top of described base material;
One diffusion layer, this diffusion layer is located at the top of described metallic reflector.
By this, reach and improve reflection efficiency and make the more uniform effect of light diffusion.
Description of drawings
Fig. 1 is the organigram of traditional reflective sheet and backlight module;
Fig. 2 is the side cross-sectional schematic of traditional reflective sheet;
Fig. 3 is the side cross-sectional schematic of another traditional reflective sheet;
Fig. 4 is the side cross-sectional schematic of another traditional reflective sheet;
Fig. 5 is the arrangement plan of reflector plate and backlight module among the present invention;
Fig. 6 is the side cross-sectional schematic of reflector plate among the present invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment among the present invention is described in further detail.
As shown in Figure 5 and Figure 6, the backlight module 1 among the present invention is made up of a cold-cathode tube 12, a diffuser plate 13 and two diffusion sheets 14, and is provided with a reflector plate 2 in cold-cathode tube 12 belows; Wherein, reflector plate 2 comprises at least: a base material 21, its main material are PET (polyethylene terephthalate); One metallic reflector 22 utilizes sputter or vacuum vapour deposition to be located at the top of base material 21, can improve the light reflection efficiency, and its main material is aluminium or silver; One diffusion layer 23 is coated with the top of being located at metallic reflector 22, and its main material is TiO
2(titania) or SiO
2(silicon dioxide).
By this, make reflector plate of the present invention have following advantage:
1. has good reflection efficiency: with sputter or vacuum evaporation one metallic reflector,, can make reflector plate have good reflection efficiency on the reflector plate by the high reflectance of metallic reflector.
2. make light spread more evenly: coating one deck diffusion layer on metallic reflector, make light spread more evenly by diffusion layer, can make reflector plate more even with the reflected light diffusion.
Therefore 3. be applicable to the flat display apparatus of various sizes: by the design of metallic reflector, make reflector plate have good reflection efficiency, do not need to increase light source in addition, be beneficial to be used in and have undersized flat display apparatus in (as mobile phone, PDA); Again by the design of diffusion layer, make reflector plate more even with the reflected light diffusion, make the bad zone of picture be difficult for manifesting, be beneficial to be used in and have large-sized flat display apparatus in (as computing machine LCD).Therefore, be applicable to the flat display apparatus of various sizes.
In addition; though above-mentioned preferred embodiment among the present invention is described; but can not be as protection scope of the present invention; promptly should be understood that to those skilled in the art; do not breaking away from variation and the modification that to make equivalence under the design spirit of the present invention to it; therefore, every not breaking away from the equivalence variation of having done under the design spirit of the present invention and modification, all should think to fall into protection scope of the present invention.
Claims (5)
1. reflector plate that improves after the structure is characterized in that comprising at least:
One base material;
One metallic reflector, this metallic reflector is located at the top of described base material;
One diffusion layer, this diffusion layer is located at the top of described metallic reflector.
2. according to the reflector plate described in the claim 1, it is characterized in that: the main material of described base material is a polyethylene terephthalate.
3. according to the reflector plate described in the claim 1, it is characterized in that: the main material of described metallic reflector is aluminium or silver.
4. according to the reflector plate described in the claim 1, it is characterized in that: described metallic reflector utilizes sputter or vacuum vapour deposition to be located on the described base material.
5. according to the reflector plate described in the claim 1, it is characterized in that: the main material of described diffusion layer is titania or silicon dioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200410088769XA CN1637509A (en) | 2003-12-29 | 2004-11-01 | Reflecting sheet in improved structure |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200320131595 | 2003-12-29 | ||
| CN200320131595.1 | 2003-12-29 | ||
| CNA200410088769XA CN1637509A (en) | 2003-12-29 | 2004-11-01 | Reflecting sheet in improved structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1637509A true CN1637509A (en) | 2005-07-13 |
Family
ID=34862502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200410088769XA Pending CN1637509A (en) | 2003-12-29 | 2004-11-01 | Reflecting sheet in improved structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1637509A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105511164A (en) * | 2016-02-03 | 2016-04-20 | 京东方科技集团股份有限公司 | Backlight module and fabrication method thereof and display device |
| CN106772773A (en) * | 2017-01-09 | 2017-05-31 | 京东方科技集团股份有限公司 | A kind of light guide plate and preparation method thereof and backlight module, display device |
| CN107083163A (en) * | 2017-05-05 | 2017-08-22 | 孝感双华应用科技开发有限公司 | A kind of preparation method of heat-conducting type reflectance coating |
-
2004
- 2004-11-01 CN CNA200410088769XA patent/CN1637509A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105511164A (en) * | 2016-02-03 | 2016-04-20 | 京东方科技集团股份有限公司 | Backlight module and fabrication method thereof and display device |
| CN106772773A (en) * | 2017-01-09 | 2017-05-31 | 京东方科技集团股份有限公司 | A kind of light guide plate and preparation method thereof and backlight module, display device |
| CN107083163A (en) * | 2017-05-05 | 2017-08-22 | 孝感双华应用科技开发有限公司 | A kind of preparation method of heat-conducting type reflectance coating |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |