CN104534358A - Backlight module and 3D display device - Google Patents
Backlight module and 3D display device Download PDFInfo
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- CN104534358A CN104534358A CN201410814847.3A CN201410814847A CN104534358A CN 104534358 A CN104534358 A CN 104534358A CN 201410814847 A CN201410814847 A CN 201410814847A CN 104534358 A CN104534358 A CN 104534358A
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- backlight module
- light
- backlight
- display
- optical sheet
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- 230000003287 optical effect Effects 0.000 claims abstract description 19
- 239000011521 glass Substances 0.000 claims abstract description 14
- 238000001228 spectrum Methods 0.000 claims abstract description 13
- 239000002096 quantum dot Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- 238000000926 separation method Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 11
- 230000003595 spectral effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 241001025261 Neoraja caerulea Species 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000003086 colorant Substances 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 210000004556 brain Anatomy 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- YBNMDCCMCLUHBL-UHFFFAOYSA-N (2,5-dioxopyrrolidin-1-yl) 4-pyren-1-ylbutanoate Chemical compound C=1C=C(C2=C34)C=CC3=CC=CC4=CC=C2C=1CCCC(=O)ON1C(=O)CCC1=O YBNMDCCMCLUHBL-UHFFFAOYSA-N 0.000 description 1
- 229910004613 CdTe Inorganic materials 0.000 description 1
- 229910000673 Indium arsenide Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- RPQDHPTXJYYUPQ-UHFFFAOYSA-N indium arsenide Chemical compound [In]#[As] RPQDHPTXJYYUPQ-UHFFFAOYSA-N 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/34—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
Abstract
The invention relates to the technical field of 3D display, in particular to a backlight module of a 3D display device. The module comprises a backlight source capable of emitting blue light, an optical plate and an optical module arranged above the optical plate. A Cd quantum point film capable of being motivated by the blue light to generate light with the wave length of 590-610 nm and the wave length of 540-560 nm is arranged on the optical plate. The wave length of the blue light is 440-460 nm. According to the technical scheme, the light emitted by the backlight module is filtered through a CF of a display panel to obtain color spectrums of R pixels, G pixels and B pixels, wherein the color spectrums are independent of one another. Spectrum separation is carried out on the light emitted by the display panel through 3D glasses to achieve the 3D effect. Left and right parallax images of the 3D display device are separated highly, and 3D display without crosstalk is achieved.
Description
Technical field
The present invention relates to 3D Display Technique field, particularly a kind of backlight module and use a kind of 3D display unit of this backlight module.
Background technology
3D technology is employed more and more widely in the modern life, what 3D Display Technique mainly adopted is that the principle of binocular parallax is to realize 3D display effect, be presented in two-dimensional display by two width anaglyphs (left and right disparity map), then utilize relevant technology to make the images of left and right eyes of user can only see corresponding left and right disparity map on display screen, thus pass through the fusion perception stereoeffect of brain.
Existing business spectacle 3D display mainly comprises polarised light 3D display unit, shutter 3D display unit.Polarised light 3D display unit generally adopts the method for compartition, can lose the resolution ratio of half.Simultaneously due to polarizer of fitting at panel, the brightness of 3D display also can be reduced outward; Shutter 3D display unit generally adopts the method for sliced time, the error of synchronizing signal there will be 3D and shows cross-interference issue, easily cause film flicker, and shutter 3D display unit also needs an independent control circuit to realize the simultaneous display of liquid crystal panel and glasses, therefore the drive circuit of this display device is complicated.
Summary of the invention
The present invention provides a kind of backlight module of color separation 3D Display Technique of spectral separation, should comprise backlight, optical sheet and the optics module be located at above described optical sheet that can send blue light by backlight module, it can be the Cd quantum dot film of the light of 590nm ~ 610nm and 540nm ~ 560nm by described blue-light excited generation wavelength that described optical sheet is provided with.
Further, the wavelength of described blue light is 440nm ~ 460nm;
Further, described Cd quantum dot film is the Cd quanta point material of the kernel particle diameter of two kinds of sizes;
Further, described optical sheet is light guide plate, and described backlight is located at the side of this light guide plate;
Further, described optical sheet is diffuser plate, and described backlight is positioned at the below of this diffuser plate;
Further, the wave-length coverage of the light that described backlight module sends is 440nm ~ 460nm, 590nm ~ 610nm and 540nm ~ 560nm.
The present invention gives a kind of 3D display unit, comprises backlight module as above, and display floater, described backlight module are located at the back of display floater; And receive 3D glasses of display floater image, these glasses comprise left eyeglass and right eyeglass, wherein, the filter wavelength response range of described left eyeglass is 590nm ~ 610nm, and the filter wavelength response range of right eyeglass is 540nm ~ 560nm and 440nm ~ 455nm.
Further, two, described left and right eyeglass all adopts filter plate;
Further, after the CF of described display floater filters, the color spectrum of R pixel, G pixel, B pixel is separate.
Beneficial effect: the light sent by backlight module of the present invention, through display floater CF filter after obtain R pixel, G pixel, B pixel color spectrum separate.Again by 3D glasses of the present invention, the light sent by display floater carries out spectral separation, realizes 3D display effect.The horizontal parallax picture altitude of the 3D display unit realized is separated, and there is no the 3D display of crosstalk.Effectively solve prior art Problems existing.
Accompanying drawing explanation
Fig. 1 is the first example structure schematic diagram of backlight module of the present invention;
Fig. 2 is backlight module luminescent spectrum schematic diagram of the present invention;
Fig. 3 is the second example structure schematic diagram of backlight module of the present invention;
Fig. 4 is the composition diagram of 3D display unit of the present invention;
Wherein, 100, backlight, 200, diffuser plate, 300, optics module 3,201, diffuser plate incidence surface, 400, Cd quantum dot film, 500, light guide plate, 501, the incidence surface of light guide plate, 700,3D glasses.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
Quantum dot (Quantum Dots, QDs), can be described as again nanocrystalline (Nanocrystallines).The particle diameter of quantum dot is usually between 1 ~ 10nm, and because electronics and hole are by quantum confinement, continuous print band structure becomes the discrete energy levels structure with molecular characterization, can emitting fluorescence after being stimulated.The core of quantum dot is made up of II-VI group (CdSe, CdTe, CdS, ZnSe), iii-v (InP, InAs) or group IV-VI (PbSe) element.By regulating nuclear radius in particle, its fluorescence emission peak wavelength can from ultraviolet to infrared continuously adjustabe.
The present invention utilizes quantum dot properties of materials, provides a kind of color separation 3D Display Technique of spectral separation, and spectral unmixing technology is exactly in the scope that red, green, blue three primary colours half peak breadth allows, and is separated two groups of different narrow-band spectrum.Its technological merit is mainly: 1, horizontal parallax image is by strict filtering and high separation, puts on one's glasses when watching stereo-picture without ghost phenomena; 2, the picture quality of display is good, flicker free, and comfortableness is good, watches without dizzy phenomenon lastingly; 3, glasses are without the need to being equipped with the drive circuit of power supply and complexity, and glasses are light, and therefore comfort is good; 4, without the need to signal synchronizing generator, head can arbitrarily movement, wearer mutually between can not produce interference, mass viewer audiences applications can be met.
The present invention provides a kind of backlight module of color separation 3D Display Technique of spectral separation, comprises backlight, optical sheet and the optics module be located at above this optical sheet that can send blue light.Described optical sheet is provided with the Cd quantum dot film that can be subject to the Cd quanta point material of described blue-light excited generation ruddiness and green glow.Adopt blue-ray LED to excite Cd quanta point material in the present invention, quanta point material has a lot of advantage than existing fluorescent material, and the kernel particle size of particle is controlled, and spectrum is narrow and symmetrical, be uniformly dispersed, excite that transformation efficiency is high, stable, light efficiency comparatively advantages of higher,
Provide the first embodiment of backlight module of the present invention below, as shown in Figure 1, be a kind of backlight module of straight-down negative, its optics version is diffuser plate; This module comprises: a diffuser plate 200, is positioned at the blue-ray LED backlight 100 below diffuser plate 200, and this backlight is blue LED lamp bar, and its blue-ray LED can send the blue light that wavelength is 440nm ~ 460nm; One is positioned at the optics module 300 above diffuser plate 200, and one is located at a Cd quantum dot film 400 on the incidence surface 201 of diffuser plate, this quantum dot film 400 a kind ofly with the addition of the optical thin film that kernel particle diameter is the Cd quanta point material of two kinds of sizes, quantum dot film 400 is ruddiness and 540nm ~ 560nm green glow of 590nm ~ 610nm at the blue-light excited lower generation wavelength that the wavelength that blue-ray LED backlight 100 sends is 440nm ~ 460nm, with a part through blue light after obtain white light.Namely the spectral region of light that this backlight module sends is 590nm ~ 610nm, 540nm ~ 560nm, 440nm ~ 460nm.The spectral response of the red, green, blue three primary colours sent for backlight module as shown in table 1.
| Peak response wavelength | Half-peak response duration | Wavelength response range | |
| Red (R) | 600nm | 20nm | 590～610nm |
| Green (G) | 550nm | 20nm | 540～560nm |
| Blue (B) | 450nm | 20nm | 440～460nm |
Table 1
As shown in table 1, the half-peak response duration of the luminescent spectrum of Cd quantum dot is 20nm, when being incident light (i.e. blue-ray LED send light) the deexcitation Cd quantum dot film of 440nm ~ 460nm with wavelength, rear generation wavelength is excited to be ruddiness and 540nm ~ 560nm green glow of 590nm ~ 610nm.The blue light exciting the ruddiness of rear generation, green glow and part that induced phenomenon itself does not occur forms the light that whole backlight module sends, after CF filters, make the color spectrum of R pixel, G pixel, B pixel separate, backlight module luminescent spectrum schematic diagram as shown in Figure 2.
The present invention gives the second embodiment, and as shown in Figure 3, this embodiment is side entrance back module, and wherein, optical sheet is light guide plate; This module comprises, and can send the blue-ray LED backlight 100 of blue light, light guide plate 500, the optics module 300 being located at the Cd quantum dot film 400 on light guide plate 500 incidence surface 501 and being located at above light guide plate 500, backlight 100 is located at the side of light guide plate 500.The luminous flux that light-guide plate guides backlight sends is evenly distributed in whole.In the present embodiment, other structures of backlight module are identical with the first embodiment does not state as good horse herein.
With reference to Fig. 4, for the composition schematic diagram of a kind of 3D display unit provided by the invention, this display unit comprises: 3D glasses of display floater, the backlight module being located at display floater back and reception display floater image, wherein, display floater comprises lower polaroid, tft array substrate, liquid crystal, color membrane substrates CF and upper polaroid from right to left successively; Backlight module has the structure as shown in the first embodiment in Fig. 1, also can be the structure shown in the second embodiment in Fig. 3; Described 3D glasses 700 comprise left eyeglass R and right eyeglass L, and described two eyeglasses all adopt filter plate; Wherein, the filter wavelength response range of left eyeglass is 590nm ~ 610nm, and the filter wavelength response range of right eyeglass comprises 540nm ~ 560nm and 440nm ~ 455nm.
In the present embodiment, the backlight of backlight module sends blue light, excites Cd quantum dot film, sends ruddiness and green glow.Shine optics module after the blue light white light of induced phenomenon itself does not occur for ruddiness, green glow and part to spread, then enter into display floater, after the filtration of the CF of display floater, make the color spectrum of R pixel, G pixel, B pixel separate.By wearing the 3D glasses in the present invention, because left eye receives only left anaglyph, namely left eye receives only the anaglyph that wavelength response range is 590nm ~ 610nm; Right eye receives only right anaglyph, and namely right eye only accepts the anaglyph that wavelength response range comprises 540nm ~ 560nm and 440nm ~ 455nm; Especially the color that the left anaglyph that left eye receives shows and the color that the right anaglyph that right eye receives shows are complementary colours.Therefore, by the fusion of brain, beholder can the 3D rendering of perception full color.Due to the arrangement of subpixels that the horizontal parallax graphical arrangement in the present embodiment is based on liquid crystal display, therefore 3D display resolution is without any loss, achieves the 3D display of full resolution.And this 3D display unit adopts spectral unmixing technology, therefore the horizontal parallax picture altitude of this device is separated, and the 3D achieved without crosstalk shows.
Claims (9)
1. a backlight module, comprise backlight, optical sheet and the optics module be located at above described optical sheet that can send blue light, it is characterized in that: it can be the Cd quantum dot film of the light of 590nm ~ 610nm and 540nm ~ 560nm by described blue-light excited generation wavelength that described optical sheet is provided with.
2. backlight module according to claim 1, is characterized in that: the wavelength of described blue light is 440nm ~ 460nm.
3. backlight module according to claim 1, is characterized in that: described Cd quantum dot film is the Cd quanta point material of the kernel particle diameter of two kinds of sizes.
4. backlight module according to claim 1, is characterized in that: described optical sheet is light guide plate, and described backlight is located at the side of this light guide plate.
5. backlight module according to claim 1, is characterized in that: described optical sheet is diffuser plate, and described backlight is positioned at the below of this diffuser plate.
6. backlight module according to claim 1, is characterized in that: the wave-length coverage of the light that described backlight module sends is 440nm ~ 460nm, 590nm ~ 610nm and 540nm ~ 560nm.
7. a 3D display unit, comprises the backlight module as described in claim 1-6, and display floater, described backlight module are located at the back of display floater; And receive 3D glasses of display floater image, these glasses comprise left eyeglass and right eyeglass, wherein, the filter wavelength response range of described left eyeglass is 590nm ~ 610nm, and the filter wavelength response range of right eyeglass is 540nm ~ 560nm and 440nm ~ 455nm.
8. a kind of 3D display unit according to claim 6, is characterized in that: two, described left and right eyeglass all adopts filter plate.
9. a kind of 3D display unit according to claim 6, is characterized in that: after the CF of described display floater filters, the color spectrum of R pixel, G pixel, B pixel is separate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410814847.3A CN104534358A (en) | 2014-12-24 | 2014-12-24 | Backlight module and 3D display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410814847.3A CN104534358A (en) | 2014-12-24 | 2014-12-24 | Backlight module and 3D display device |
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| CN104534358A true CN104534358A (en) | 2015-04-22 |
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| CN201410814847.3A Pending CN104534358A (en) | 2014-12-24 | 2014-12-24 | Backlight module and 3D display device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104914617A (en) * | 2015-06-30 | 2015-09-16 | 南京中电熊猫液晶显示科技有限公司 | 2D/3D convertible liquid crystal display device |
| CN109708026A (en) * | 2017-10-25 | 2019-05-03 | 苏州星烁纳米科技有限公司 | A kind of illuminator |
| CN113534488A (en) * | 2021-07-15 | 2021-10-22 | 武汉华星光电技术有限公司 | 3D display system and display method thereof |
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| JPH08146347A (en) * | 1994-11-21 | 1996-06-07 | Nippon Hoso Kyokai <Nhk> | Color stereoscopic image display device |
| US20070247595A1 (en) * | 2006-04-25 | 2007-10-25 | Refai Hakki H | Light surface display for rendering a three-dimensional image |
| CN101852920A (en) * | 2010-03-19 | 2010-10-06 | 华映视讯（吴江）有限公司 | 3 d display device and stereoscopic picture plane display method |
| CN103090277A (en) * | 2013-01-30 | 2013-05-08 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
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2014
- 2014-12-24 CN CN201410814847.3A patent/CN104534358A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2255251A (en) * | 1991-03-21 | 1992-10-28 | Jacob Ezra | Colour anaglyph 3d television with field rate doubling |
| JPH08146347A (en) * | 1994-11-21 | 1996-06-07 | Nippon Hoso Kyokai <Nhk> | Color stereoscopic image display device |
| US20070247595A1 (en) * | 2006-04-25 | 2007-10-25 | Refai Hakki H | Light surface display for rendering a three-dimensional image |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104914617A (en) * | 2015-06-30 | 2015-09-16 | 南京中电熊猫液晶显示科技有限公司 | 2D/3D convertible liquid crystal display device |
| CN104914617B (en) * | 2015-06-30 | 2018-04-06 | 南京中电熊猫液晶显示科技有限公司 | A kind of liquid crystal display device changeable 2D/3D |
| CN109708026A (en) * | 2017-10-25 | 2019-05-03 | 苏州星烁纳米科技有限公司 | A kind of illuminator |
| CN109708026B (en) * | 2017-10-25 | 2021-12-31 | 苏州星烁纳米科技有限公司 | Lighting lamp |
| CN113534488A (en) * | 2021-07-15 | 2021-10-22 | 武汉华星光电技术有限公司 | 3D display system and display method thereof |
| US12002431B2 (en) | 2021-07-15 | 2024-06-04 | Wuhan China Star Optoelectronics Technology Co., Ltd. | 3D display system and display method thereof |
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Application publication date: 20150422 |