CN102854558A - Polaroid and display device - Google Patents
Polaroid and display device Download PDFInfo
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- CN102854558A CN102854558A CN2012103659257A CN201210365925A CN102854558A CN 102854558 A CN102854558 A CN 102854558A CN 2012103659257 A CN2012103659257 A CN 2012103659257A CN 201210365925 A CN201210365925 A CN 201210365925A CN 102854558 A CN102854558 A CN 102854558A
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Abstract
The invention discloses a polaroid and relates to the technical field of display. The polaroid comprises a base material, a first protecting layer, a polarizing layer and a second protecting layer from bottom to top, wherein the first protecting layer, the polarizing layer and the second protecting layer are sequentially formed above the base material. The polaroid is characterized in that the upper surface or lower surface of any of the base material, the first protecting layer, the polarizing layer and the second protecting layer is provided with a quantum dot layer. The invention further discloses a display device compriseing the polaroid as a lower polaroid. The quantum dot layer is manufactured in the polaroid, the base material and the protecting layers for independently manufacturing a quantum dot membrane material are omitted, a layer structure of the display device is reduced, the transmittance is improved, the material cost is reduced, and the thickness of the display device is reduced simultaneously.
Description
Technical field
The present invention relates to the display technique field, particularly a kind of polaroid and display device.
Background technology
Quantum dot can be described as again nanocrystallinely, is a kind of nano particle that is comprised of II-VI family or III-V family element.The particle diameter of quantum dot is generally between 1～10nm, because electronics and hole be by quantum confinement, continuous band structure becomes the discrete energy levels structure with molecular characterization, can emitting fluorescence after being excited.Based on quantum effect, quantum dot is at solar cell, luminescent device, and the fields such as optical bio mark are with a wide range of applications.Many diverse ways can both be used for making quantum dot, have had producer's develop to go out quantum dot and have shown product.The quantum dot backlight is exactly to send blue-light excited quantum dot film material by light emitting diode (Light Emitting Diode, LED), produces the backlight that can satisfy the display requirement, has light utilization efficiency high, the characteristics that colour gamut is wide; Also can be the same as display of organic electroluminescence (Organic Light Emitting Diode, OLED), making has the similar quantum dot display of active illuminating display; The research of quantum dot LED has also been arranged in addition.
Quantum dot film material 100 is novel optical film materials, and primary structure comprises base material 101, quantum dot layer 102, surface protection film 103 as shown in Figure 1.In the existing display device, quantum dot film material is mainly used in the backlight of blue led as light source, owing to the special optical performance of quanta point material, can significantly improve the colour gamut of display, and the utilization factor of lifting light, begun now to be applied to the demonstration field.
Because in the existing display device, quantum dot film material is to be arranged between the lower polaroid and backlight of display device as independent one deck, as shown in Figure 2, thereby increased the hierarchical structure of display device, reduced transmitance, and increased material cost, simultaneously so that the increase of the thickness of display device.
Summary of the invention
The technical matters that (one) will solve
The technical problem to be solved in the present invention is: how to increase the transmitance of display device in the display device that adopts technology of quantum dots, reduce the thickness of display device.
(2) technical scheme
For solving the problems of the technologies described above; the invention provides a kind of polaroid; comprise from the bottom to top: base material reaches the first protective seam, polarizing layer, the second protective seam that is formed on successively described base material top, is provided with quantum dot layer on arbitrary layer upper surface in described base material, the first protective seam, polarizing layer and the second protective seam or the lower surface.
Wherein, described quantum dot layer is formed by quanta point material.
Wherein, also comprise: the adhesive phase and the release film that are formed on successively described base material below.
Wherein, above the second protective seam, also be provided with surface protection film.
The present invention also provides a kind of display device, comprises backlight and the color membrane substrates that is arranged on described backlight top, between described backlight and described color membrane substrates, also is provided with above-mentioned each described polaroid.
Wherein, the optical wavelength after the optical wavelength sent of described backlight excites less than the quanta point material of described quantum dot layer.
Wherein, identical with color after the quanta point material in the color of a sub-pix corresponding region and the zone of the corresponding quantum dot layer of this sub-pix is excited on the described color membrane substrates.
Wherein, described backlight is blue-light source, the zone corresponding with Red lightscreening plate on the color membrane substrates is red quanta point material on the described quantum dot layer, the zone corresponding with green color filter on the color membrane substrates is green quanta point material, and the zone corresponding with color membrane substrates blue optical filter is transparent region.
Wherein, described blue-light source is the blue LED of wavelength coverage between 440nm ~ 455nm.
Wherein, described backlight is ultraviolet source, the zone corresponding with Red lightscreening plate on the color membrane substrates is red quanta point material on the described quantum dot layer, the zone corresponding with green color filter on the color membrane substrates is green quanta point material, and the zone corresponding with color membrane substrates blue optical filter is blue quanta point material.
(3) beneficial effect
The present invention is produced on quantum dot layer in the polaroid, and base material and protective seam when having saved independent making quantum dot film material have reduced the hierarchical structure of display device, have increased transmitance, make display device thickness less, and have saved material cost.
Description of drawings
Fig. 1 is a kind of quantum dot film equipment structure synoptic diagram of prior art;
Fig. 2 is the display device structure synoptic diagram of quantum dot film material among a kind of Fig. 1 of comprising of prior art;
Fig. 3 is the structural representation of a kind of polaroid of the embodiment of the invention;
Fig. 4 is the display device structure synoptic diagram of polaroid among a kind of Fig. 3 of comprising of the embodiment of the invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for explanation the present invention, but are not used for limiting the scope of the invention.
Embodiment 1
The structure of the polaroid 700 of present embodiment comprises as shown in Figure 3 from the bottom to top: base material 701, quantum dot layer 702, the first protective seam 703, polarizing layer 704 and the second protective seam 705.When making, on the base material 701 of polaroid 700, directly make quantum dot layer 702, make the first protective seam 703, polarizing layer 704 and the second protective seam 705 at quantum dot layer 702 again.In order to protect polaroid 700 not to be damaged, on the second protective seam 705, also be provided with surface protection film 706(after polaroid 700 is attached on the display device, this surface protection film 706 of usually can tearing).
Wherein, quantum dot layer 702 is formed by quanta point material.The material of the first protective seam 703 and the second protective seam 705 is Triafol T (Tri Acetic acid Celluose, TAC).The material of polarizing layer 704 is polyvinyl alcohol (PVA) (Polyvinyl Alcohol, PVA).The material of protective seam and polarizing layer is not limited to this in the present embodiment, also can use so long as can realize the other materials of same protection effect and polarisation effect.
In the present embodiment, owing to directly utilized base material 701 and the diaphragm 706 of polaroid 700, base material and protective seam when having saved independent making quantum dot film material; reduced the hierarchical structure of display device; increased transmitance, and saved material cost, made simultaneously display device thickness less.
Present embodiment is not limited to above-mentioned hierarchical structure, and quantum dot layer 702 can be arranged on arbitrary layer the upper surface or lower surface in base material 701, the first protective seam 703, polarizing layer 704 and the second protective seam 705.
The polaroid 700 of present embodiment is arranged between backlight and the color membrane substrates, lower polaroid as display device, when making display device, usually polaroid adopts the mode that attaches to stick on the array base palte below, base material 701 belows of the polaroid 700 of present embodiment also are formed with adhesive phase 707 and release film 708, when attaching, release film 708 is torn off, by adhesive phase 707 polaroid 700 is attached to the array base palte below.If quantum dot layer is positioned at the lower surface of base material 701, then between base material 701 and adhesive phase 707.
Embodiment 2
Present embodiment provides the display device of a kind of containing quantum point layer, as shown in Figure 4, comprises from the bottom to top: backlight 200, as polaroid 700, array base palte 400, color membrane substrates 500 and the upper polaroid 600 of above-described embodiment 1 of lower polaroid.Polaroid 700 is attached to the below of array base palte 400 by adhesive phase.
Because short wavelength's luminous energy is high, it is low-yield to only have high-energy to excite, so the wavelength of the backlight of display device is less than the quanta point material of the quantum dot layer rear corresponding color light wavelength that is excited.Identical with color after the quanta point material in the color of a sub-pix corresponding region of display device and the zone of the corresponding quantum dot layer of this sub-pix is excited on the color membrane substrates 500, as: for RGB (RGB) color membrane substrates, be not limited to the RGB pattern herein, also can be printing color pattern (CMYK, cyan, magenta, yellow, black) or other self-defined patterns, the enamel red area of optical filter of corresponding color membrane substrates 500 is red quanta point material on the quantum dot layer.
Because color membrane substrates 500 is the RGB mode color film substrate normally, be provided with colored filter on the described color membrane substrates, have the green three kinds of colors of reddish yellow, backlight 200 adopts the blue-ray LED backlight usually, red green (RG) Pixel Design has following requirement to quantum dot: the zone corresponding with Red lightscreening plate on the color membrane substrates 500 is red quanta point material on the quantum dot layer, is green quanta point material with the zone that green color filter is corresponding on the color membrane substrates 500.After blue light was by quantum dot layer on the lower polaroid, excitated red and green quanta point material produced red light and green light.Zone corresponding with color membrane substrates 500 blue optical filters on the quantum dot layer is transparent region.
Preferentially select the blue-ray LED of 440nm ~ 455nm in display device, the more fugitive rate of wavelength is higher, and the common half-peak breadth of blue chip of volume production is 20nm now.Can select the blue chip of half-peak width, can the accuracy controlling crest location by regulating quanta point material and size.The wavelength of the green quanta point material after the selective excitation is G:520 ~ 550nm, and redness is R:620 ~ 650nm, and half-peak breadth is narrower, and excitation is higher, selects narrow as far as possible half-peak breadth can accomplish＜50nm.By reaching the requirement of demonstration behind the adjustment material.
Certainly, backlight 200 also can adopt the shorter ultraviolet source of wavelength, be provided with colored filter on the described color membrane substrates, have the green three kinds of colors of reddish yellow, the zone corresponding with Red lightscreening plate on the color membrane substrates 500 is red quanta point material on the quantum dot layer, be green quanta point material with the zone that green color filter is corresponding on the color membrane substrates 500, the zone corresponding with color membrane substrates 500 blue optical filters is blue quanta point material.
In the display device of present embodiment, quantum dot layer and polaroid integrate, base material and protective seam when having saved independent making quantum dot film material; reduced the hierarchical structure of display device; increased transmitance, and saved material cost, made simultaneously display device thickness less.。
Above embodiment only is used for explanation the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; in the situation that does not break away from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (10)
1. polaroid; comprise from the bottom to top: base material reaches the first protective seam, polarizing layer, the second protective seam that is formed on successively described base material top; it is characterized in that, be provided with quantum dot layer on arbitrary layer upper surface in described base material, the first protective seam, polarizing layer and the second protective seam or the lower surface.
2. polaroid as claimed in claim 1 is characterized in that, described quantum dot layer is formed by quanta point material.
3. polaroid as claimed in claim 1 is characterized in that, also comprises: the adhesive phase and the release film that are formed on successively described base material below.
4. such as each described polaroid in the claim 1 ~ 3, it is characterized in that, above the second protective seam, also be provided with surface protection film.
5. a display device comprises backlight and the color membrane substrates that is arranged on described backlight top, it is characterized in that, between described backlight and described color membrane substrates, also is provided with such as each described polaroid in the claim 1 ~ 4.
6. display device as claimed in claim 5 is characterized in that, the optical wavelength after the optical wavelength that described backlight sends excites less than the quanta point material of described quantum dot layer.
7. display device as claimed in claim 5 is characterized in that, and is identical with color after the quanta point material in the color of a sub-pix corresponding region and the zone of the corresponding quantum dot layer of this sub-pix is excited on the described color membrane substrates.
8. display device as claimed in claim 7, it is characterized in that, be provided with colored filter on the described color membrane substrates, have the green three kinds of colors of reddish yellow, described backlight is blue-light source, the zone corresponding with Red lightscreening plate on the color membrane substrates is red quanta point material on the described quantum dot layer, and the zone corresponding with green color filter on the color membrane substrates is green quanta point material, and the zone corresponding with color membrane substrates blue optical filter is transparent region.
9. display device as claimed in claim 8 is characterized in that, described blue-light source is the blue LED of wavelength coverage between 440nm ~ 455nm.
10. display device as claimed in claim 7, it is characterized in that, be provided with colored filter on the described color membrane substrates, have the green three kinds of colors of reddish yellow, described backlight is ultraviolet source, the zone corresponding with Red lightscreening plate on the color membrane substrates is red quanta point material on the described quantum dot layer, and the zone corresponding with green color filter on the color membrane substrates is green quanta point material, and the zone corresponding with color membrane substrates blue optical filter is blue quanta point material.
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| CN2012103659257A CN102854558A (en) | 2012-09-27 | 2012-09-27 | Polaroid and display device |
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