CN103869533B - A kind of liquid crystal display improving background color - Google Patents
A kind of liquid crystal display improving background color Download PDFInfo
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- CN103869533B CN103869533B CN201410112907.7A CN201410112907A CN103869533B CN 103869533 B CN103869533 B CN 103869533B CN 201410112907 A CN201410112907 A CN 201410112907A CN 103869533 B CN103869533 B CN 103869533B
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- liquid crystal
- transparent medium
- background color
- polaroid
- crystal display
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 52
- 238000000149 argon plasma sintering Methods 0.000 claims abstract description 29
- 210000002858 crystal cell Anatomy 0.000 claims abstract description 27
- 239000002313 adhesive film Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 230000006378 damage Effects 0.000 abstract description 4
- 230000010287 polarization Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000000644 propagated effect Effects 0.000 description 3
- 239000004988 Nematic liquid crystal Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The present invention relates to a kind of liquid crystal display improving background color, the front polaroid including liquid crystal cell and being attached to respectively on liquid crystal cell two sides and rear polaroid, the outside of rear polaroid is provided with mirror reflective plate, it is characterized by: also include that light scattering layer, described light scattering layer are arranged between rear polaroid and liquid crystal cell.Use mirror reflective plate that light is reflected outside rear polaroid, light after mirror reflective plate reflection is line polarized light, after through, polaroid will not be absorbed, and light scattering layer is set between polaroid and liquid crystal cell, make through after the light of polaroid scatter, produce soft background color, avoid again the diffuse-reflectance destruction to polarized condition, reduce the line polarized light reflected to be absorbed by rear polarizer, thus the brightness of background color can be improved, reach to improve the effect of background color.
Description
Technical field
The present invention relates to a kind of display, particularly relate to a kind of liquid crystal display improving background color.
Background technology
As shown in Figure 1, the liquid crystal display of reflection-type, currently mainly there is TN-LCD (twisted nematic liquid crystal display) and STN (super twisted nematic liquid crystal display) two kinds, its structure mainly includes liquid crystal cell 01, and it is attached to liquid crystal cell 01 respectively above and the front polaroid 02 at the back side and rear polaroid 03, wherein, the back side of rear polaroid 03 is additionally provided with one layer of reflecting layer 04, certain coarse process has been done on the surface in reflecting layer 04, to form certain diffuse-reflectance so that display has the softest background color.
In the liquid crystal display of this reflection-type, owing to reflecting layer 04 is arranged on the back side of rear polaroid 03, the reflection in reflecting layer 04 will cause the change of polarized light state, line polarized light is made largely to be reverted to normal light, when this normal light is again by polaroid (front polaroid 02 and rear polaroid 03) outgoing, in theory will be by the absorption of more than 50%, so that the brightness deterioration of reflection, thus so that the liquid crystal display of this reflection-type, its background color is the most dark.If use direct reflection, reflection light for line polarisation, although reflection light will not again be absorbed and be caused brightness deterioration, but cannot produce soft background color, and contrast is the highest.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of liquid crystal display improving background color, and this liquid crystal display improving background color has soft background color, and brightness is higher.The technical scheme used is as follows:
A kind of liquid crystal display improving background color, the front polaroid including liquid crystal cell and being attached to respectively on liquid crystal cell two sides and rear polaroid, the outside of rear polaroid is provided with mirror reflective plate, it is characterized by: also include that light scattering layer, described light scattering layer are arranged between rear polaroid and liquid crystal cell.
Above-mentioned outside refers to the side at liquid crystal cell center, on the contrary, is inner side near the side at liquid crystal cell center.
Use mirror reflective plate that light is reflected outside rear polaroid, light after mirror reflective plate reflection is line polarized light, after through, polaroid will not be absorbed, and light scattering layer is set between polaroid and liquid crystal cell, make through after the light of polaroid scatter, produce soft background color, avoid again the diffuse-reflectance destruction to polarized condition, reduce the line polarized light reflected to be absorbed by rear polarizer, thus the brightness of background color can be improved, reach to improve the effect of background color.
As the preferred version of the present invention, described light scattering layer is colloidal film.Light scattering layer is set to colloidal film, and thickness is little, adapts to the display requirement to lightening development；There is fixing shape, it is not necessary to separately set position-limit mechanism；Can make in advance, directly attach, simple and convenient.
As the further preferred version of the present invention, described light scattering layer at least includes the first transparent medium thing and the second transparent medium thing that two kinds of refractive indexs are different, and multiple first transparent medium things are mutually embedding with multiple second transparent medium things and constitute light scattering layer.Utilize the colloidal film that the transparent medium of two kinds of refractive indexs is inlayed, its scattering occurs mainly between the interface of two kinds of transparent mediums, the most this scattering mainly with interface be refracted as main, rather than it is main (although also there being interface to reflect with being reflected into of interface, but ratio is little), thus, light only needs just can be with certain random scatter angle outgoing scattering layer through minority time refraction, without through multiple reflections, can this scattering layer of outgoing, reflect fewer on the impact of polarization state, reflect bigger on the impact of polarization state, thus can reduce the polarization state of light during this to be destroyed.Make display in the case of keeping high brightness background color, higher contrast can be maintained.
As further preferred embodiments of the present invention, described first transparent medium thing and the second transparent medium thing all extend along Z-direction, and alternately arranged on X/Y plane.X/Y plane is i.e. parallel to the plane of rear polaroid, and Z axis is i.e. perpendicular to the axis of rear polaroid.That is, every kind of transparent medium can extend to the opposite side of film from the side of film, thus, when the polarized light of low-angle incidence is propagated in film, it is essentially all the graze of low-angle (big angle of reflection), because low-angle graze is little on polarization state impact, therefore, the polarized light of low-angle incidence normally only can be a kind of optical medium internal communication (being included in the reflection on two media interface), thus can preferably keep the polarizability of polarized light, make will not being destroyed of polarized light, to maintain the contrast of display further.
As the present invention the most further preferred version, described first transparent medium thing and the second transparent medium thing are pressed one-dimensional alternately arranged on X/Y plane.First transparent medium thing and the second transparent medium thing are by one-dimensional alternately arranged so that the diffuse-reflectance of light is no longer equably, but has certain anisotropy, such that it is able to meet the liquid crystal display with special viewing angle characteristic.
As the present invention the most further preferred version, described first transparent medium thing and the second transparent medium thing are alternately arranged by two dimension on X/Y plane.First transparent medium thing and the second transparent medium thing are alternately arranged by two dimension, can keep the isotropism at visual angle.
As further preferred embodiments of the present invention, the refractive index of described first transparent medium thing and the second transparent medium thing is more than 0.01.Being set to differ by more than 0.01 by the refractive index of the first transparent medium thing and the second transparent medium thing so that diffusion effect is more preferable, and polarized light is mostly low-angle graze, impact is little.
As the further preferred version of the present invention, the thickness of described colloidal film is 0.1～0.8mm.
As the further preferred version of the present invention, described colloidal film is adhesive film, is fit together by colloidal film between described rear polaroid and liquid crystal cell.
As the preferred version of the present invention, described liquid crystal cell is TN pattern or STN mode liquid crystal cell.
The present invention compared with prior art, has the advantage that
Use mirror reflective plate that light is reflected outside rear polaroid, light after mirror reflective plate reflection is line polarized light, after through, polaroid will not be absorbed, and light scattering layer is set between polaroid and liquid crystal cell, make through after the light of polaroid scatter, produce soft background color, avoid again the diffuse-reflectance destruction to polarized condition, reduce the line polarized light reflected to be absorbed by rear polarizer, thus the brightness of background color can be improved, reach to improve the effect of background color.
Accompanying drawing explanation
Fig. 1 is structural representation and the polarized light irreflexive schematic diagram of generation of liquid crystal display in prior art；
Fig. 2 is the structural representation of liquid crystal display in the embodiment of the present invention one；
Fig. 3 is the structural representation of light scattering layer in the embodiment of the present invention one；
Fig. 4 is the schematic diagram that in the embodiment of the present invention one, light scattering layer projects at X/Y plane；
Fig. 5 is the schematic diagram that light is propagated in light scattering layer；
Fig. 6 is the schematic diagram that in the embodiment of the present invention two, light scattering layer projects at X/Y plane.
Detailed description of the invention
It is described further with the preferred embodiment of the present invention below in conjunction with the accompanying drawings.
Embodiment one
As in figure 2 it is shown, this liquid crystal display improving background color, including liquid crystal cell 1 and be attached to the front polaroid 2 on liquid crystal cell 1 two sides and rear polaroid 3 respectively, and light scattering layer 4；Liquid crystal cell 1 is TN pattern (or STN mode liquid crystal cell)；The outside of rear polaroid 3 is provided with mirror reflective plate 5；Light scattering layer 4 is arranged between rear polaroid 3 and liquid crystal cell 1.
Light scattering layer 4 is colloidal film, the thickness of colloidal film be 0.5mm(0.1～0.8mm can), colloidal film is adhesive film, by light scattering layer 4(colloidal film between rear polaroid 3 and liquid crystal cell 1) fit together.
As shown in Figure 3, light scattering layer 4 includes the first transparent medium thing 6 and the second transparent medium thing 7 that two kinds of refractive indexs are different, the refractive index of the first transparent medium thing 6 and the second transparent medium thing 7 is more than 0.01, and multiple first transparent medium things 6 are mutually embedding with multiple second transparent medium things 7 and constitute light scattering layer 4；First transparent medium thing 6 and the second transparent medium thing 7 all extend along Z-direction, and as shown in Figure 4, and the first transparent medium thing 6 and the second transparent medium thing 7 are pressed one-dimensional alternately arranged on X/Y plane.X/Y plane is i.e. parallel to the plane of rear polaroid 3, and Z axis is i.e. perpendicular to the axis of rear polaroid 3.
As shown in Figure 5, use the transparent medium thing of two kinds of refractive indexs, what light occurred on the interface of dielectric object includes refraction and reflection, when wherein angle of incidence (light and the angle of reflecting surface normal) is less, and predominantly refraction, when angle of incidence is bigger, predominantly reflection (graze), wherein, either refraction or graze, its structure is all that light along original direction outgoing departing from a certain angle scattering layer rather than reflexes to an other direction.And common scattering layer have employed the reverberation of non-transparent medium, the number of its no matter angle of incidence, is all to be reflected into master, especially when angle of incidence is less, light is reflected back, need again to reflect could outgoing scattering layer in the same direction, multiple reflections easily causes the loss of polarized condition.
Use mirror reflective plate 5 that light is reflected outside rear polaroid 3, light after mirror reflective plate 5 reflection is line polarized light, will not be absorbed during polaroid 3 after through, and light scattering layer 4 is set between rear polaroid 3 and liquid crystal cell 1, make through after the light of polaroid 3 scatter, produce soft background color, avoid again the diffuse-reflectance destruction to polarized condition, reduce the line polarized light reflected to be absorbed by rear polarizer 3, thus the brightness of background color can be improved, reach to improve the effect of background color.
Utilize the colloidal film that the first transparent medium thing 6 of two kinds of refractive indexs and multiple second transparent medium thing 7 are inlayed, its scattering occurs mainly between the interface of the first transparent medium thing 6 and multiple second transparent medium thing 7, the most this scattering is mainly refracted as main (in Fig. 5 for make accompanying drawing more succinct and eliminate the signal of substantial amounts of refraction light) with interface, rather than it is main (although also there being interface to reflect with being reflected into of interface, but ratio is little), thus, light only needs just can be with certain random scatter angle emergent light scattering layer 4 through minority time refraction, without through multiple reflections, can this light scattering layer 4 of outgoing, reflect fewer on the impact of polarization state, reflect bigger on the impact of polarization state, thus can reduce the polarization state of light during this to be destroyed.Make display in the case of keeping high brightness background color, higher contrast can be maintained.
First transparent medium thing 6 and multiple second transparent medium thing 7 all extend to the opposite side of colloidal film from the side of colloidal film, thus, when the polarized light of low-angle incidence is propagated in colloidal film, it is essentially all the graze of low-angle (big angle of reflection), because low-angle graze is little on polarization state impact, therefore, the polarized light of low-angle incidence normally only can be a kind of optical medium internal communication (being included in the reflection on the first transparent medium thing 6 and multiple second transparent medium thing 7 interface), thus can preferably keep the polarizability of polarized light, make will not being destroyed of polarized light, to maintain the contrast of display further.
First transparent medium thing 6 and the second transparent medium thing 7 are by one-dimensional alternately arranged so that the diffuse-reflectance of light is no longer equably, but has certain anisotropy, such that it is able to meet the liquid crystal display with special viewing angle characteristic.
Embodiment two
As shown in Figure 6, in the case of other parts are all identical with embodiment one, its difference is: the first transparent medium thing 6 and the second transparent medium thing 7 are alternately arranged by two dimension on X/Y plane.
First transparent medium thing 6 and the second transparent medium thing 7 are alternately arranged by two dimension, can keep the isotropism at visual angle.
In addition; it should be noted that the specific embodiment described in this specification, its each several part title etc. can be different; all equivalences done according to structure, feature and the principle described in inventional idea of the present invention or simple change, be all included in the protection domain of patent of the present invention.Described specific embodiment can be made various amendment or supplements or use similar mode to substitute by those skilled in the art; without departing from the structure of the present invention or surmount scope defined in the claims, protection scope of the present invention all should be belonged to.
Claims (8)
1. the liquid crystal display improving background color, the front polaroid including liquid crystal cell and being attached to respectively on liquid crystal cell two sides and rear polaroid, the outside of rear polaroid is provided with mirror reflective plate, it is characterized by: also include that light scattering layer, described light scattering layer are arranged between rear polaroid and liquid crystal cell；Light scattering layer is colloidal film, and light scattering layer at least includes the first transparent medium thing and the second transparent medium thing that two kinds of refractive indexs are different, and multiple first transparent medium things are mutually embedding with multiple second transparent medium things and constitute light scattering layer.
Improve the liquid crystal display of background color the most as claimed in claim 1, it is characterized in that: described first transparent medium thing and the second transparent medium thing all extend along Z-direction, and alternately arranged on X/Y plane.
Improve the liquid crystal display of background color the most as claimed in claim 2, it is characterized in that: described first transparent medium thing and the second transparent medium thing on X/Y plane by one-dimensional alternately arranged.
Improve the liquid crystal display of background color the most as claimed in claim 2, it is characterized in that: described first transparent medium thing and the second transparent medium thing are alternately arranged by two dimension on X/Y plane.
Improve the liquid crystal display of background color the most as claimed in claim 1, it is characterized in that: the refractive index of described first transparent medium thing and the second transparent medium thing is more than 0.01.
Improve the liquid crystal display of background color the most as claimed in claim 1, it is characterized in that: the thickness of described colloidal film is 0.1～0.8mm.
Improve the liquid crystal display of background color the most as claimed in claim 1, it is characterized in that: described colloidal film is adhesive film, fit together by colloidal film between described rear polaroid and liquid crystal cell.
Improve the liquid crystal display of background color the most as claimed in claim 1, it is characterized in that: described liquid crystal cell is TN pattern or STN mode liquid crystal cell.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410112907.7A CN103869533B (en) | 2014-03-25 | 2014-03-25 | A kind of liquid crystal display improving background color |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410112907.7A CN103869533B (en) | 2014-03-25 | 2014-03-25 | A kind of liquid crystal display improving background color |
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| CN103869533A CN103869533A (en) | 2014-06-18 |
| CN103869533B true CN103869533B (en) | 2017-01-04 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105372868A (en) * | 2015-12-04 | 2016-03-02 | 武汉华星光电技术有限公司 | Display device and reflection type display panel |
| CN106228535A (en) * | 2016-07-05 | 2016-12-14 | 董超超 | A kind of liquid crystal display comprising speckle registration apparatus |
| CN109683387A (en) * | 2019-02-26 | 2019-04-26 | 深圳市华之洋光电科技有限公司 | The TN display screen of multi-angle display |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1247999A (en) * | 1998-08-24 | 2000-03-22 | 松下电器产业株式会社 | Reflection-type liqud crystal display element |
| CN1293768A (en) * | 1999-02-01 | 2001-05-02 | 精工爱普生株式会社 | Display device, electronics device using it and light guide used for display device |
| CN101809488A (en) * | 2007-10-03 | 2010-08-18 | 夏普株式会社 | Light diffusion sheet and liquid crystal display device |
| JP2012118144A (en) * | 2010-11-29 | 2012-06-21 | Stanley Electric Co Ltd | Liquid crystal element and liquid crystal display device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200641465A (en) * | 2005-05-20 | 2006-12-01 | Sanyo Epson Imaging Devices Co | Display device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1247999A (en) * | 1998-08-24 | 2000-03-22 | 松下电器产业株式会社 | Reflection-type liqud crystal display element |
| CN1293768A (en) * | 1999-02-01 | 2001-05-02 | 精工爱普生株式会社 | Display device, electronics device using it and light guide used for display device |
| CN101809488A (en) * | 2007-10-03 | 2010-08-18 | 夏普株式会社 | Light diffusion sheet and liquid crystal display device |
| JP2012118144A (en) * | 2010-11-29 | 2012-06-21 | Stanley Electric Co Ltd | Liquid crystal element and liquid crystal display device |
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