CN107300804A - A kind of quantum dot and the liquid crystal display of YAG fluorescent powder blending - Google Patents
A kind of quantum dot and the liquid crystal display of YAG fluorescent powder blending Download PDFInfo
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- CN107300804A CN107300804A CN201610235166.0A CN201610235166A CN107300804A CN 107300804 A CN107300804 A CN 107300804A CN 201610235166 A CN201610235166 A CN 201610235166A CN 107300804 A CN107300804 A CN 107300804A
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- light
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- fluorescent powder
- white light
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- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- 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
- G02F1/133602—Direct backlight
- G02F1/133609—Direct backlight including means for improving the color mixing, e.g. white
-
- 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
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention relates to technical field of liquid crystal display, and in particular to a kind of quantum dot and the liquid crystal display of YAG fluorescent powder blending, and the light-source structure is by solid radiating aluminum hull（1）, PCB（2）, blue-ray LED（3）With quantum dot film（4）Constitute, the solid radiating aluminum hull（1）For strip flute profile, the blue-ray LED（3）Pass through PCB（2）Installed in the trough-shaped base section of solid radiating aluminum hull, solid radiating aluminum hull（1）Notch be provided with transparent glass（12）, the quantum dot film（4）It is laid on light guide plate（5）Light entry portal on, quantum dot film（4）The features such as quantum dot and yellow fluorescent powder are inside distributed with.The present invention improves color gamut wideness, can reach 110%；In addition, quantum dot film is arranged on reflecting plate in the present invention, it is divided into two parts with light-source structure, can effectively isolates the heat that light-source structure dissipates, further reduction quantum dot is unstable because of temperature change.
Description
Technical field
The present invention relates to technical field of liquid crystal display, and in particular to a kind of quantum dot and the liquid crystal display of YAG fluorescent powder blending.
Background technology
Quantum dot (quantum
Dot) be quasi-zero dimension (quasi-zero-dimensional) nano material, be made up of a small amount of atom.Roughly, the size of three dimensions of quantum dot all at 100 nanometers (nm) below, outward appearance is all limited to just like a minimum pointing object, motion of its internal electron in all directions, so quantum confined effect (quantum confinement effect) is particularly significant.
The colour gamut of LCD TV depends on the spectral characteristic and spectrum and the matching degree of liquid crystal panel colored filter (CF) of backlight.As long as back light white light, white light can be obtained by any desired color by optical filter again, and the LCD TV colour gamut drawn if the enough height of white light colour gamut also can be high.Current industry generally weighs color rendering effect, color domain coverage ratio using NTSC standard（Abbreviation colour gamut）Higher, color gamut that TV is presented is also abundanter, closer to Natural color.
Traditional WLED TVs use the light-emitting mode of " blue-ray LED+yellow fluorescent powder " mostly（The light sent by blue-ray LED excites yellow fluorescent powder to produce gold-tinted, remaining blue light and gold-tinted colour mixture and obtain white light, and for RGB three primary colours, its excitation is very poor）, though people can be allowed to feel white light, but lack feux rouges and green glow causes colour mixture more difficult, be to cause color domain coverage ratio relatively low and the reason for backlight conversion efficiency is not high.General color domain coverage ratio（Abbreviation colour gamut）No more than 72%, current most of liquid crystal displays（TV or mobile phone）All use this light-emitting mode.
In the prior art, mainly it is that the light sent using blue-ray LED excites the sub- point of two amounts using the technology main flow of quantum dot light emitting（Red light quantum point and green light quantum point）Material, sends feux rouges and green glow respectively, and turns into white light with remaining blue light colour mixture, and this white light is just as the back light of LCD TV.The colour gamut that this white light comes out can reach 110%, and the colour gamut and efficiency of quantum dot liquid crystal display are higher, so its picture color is more natural beautiful, and take into account energy-conserving and environment-protective.
But the cost of quantum dot is very high at present, and quantum dot can be because there is certain unstability in the environmental factor such as temperature height, the shortcoming of stability difference, show the most notably equipment such as current electronic equipment especially mobile phone, certain hot environment is there may be in use, and the illuminating source of such quantum dot is then extremely unstable.
The content of the invention
It is an object of the invention to provide a kind of quantum dot and the liquid crystal display of YAG fluorescent powder blending, solve the light-emitting mode that existing liquid crystal display light-emitting mode uses " blue-ray LED+yellow fluorescent powder ", colour gamut is not wide enough, and use quantum dot light emitting, easily influenceed again by use environment, the especially influence of temperature, cause flashing determine, and all using quantum dot cost it is very high the problem of.
To solve above-mentioned technical problem, the present invention uses following technical scheme：
A kind of quantum dot and the liquid crystal display of YAG fluorescent powder blending,
The light-source structure is made up of solid radiating aluminum hull, PCB and blue-ray LED, the solid radiating aluminum hull is strip flute profile, the blue-ray LED is arranged on the trough-shaped base section of solid radiating aluminum hull by PCB, and the notch of solid radiating aluminum hull is provided with transparent glass；
The display device is made up of light guide plate, blooming piece and reflecting plate, and the blooming piece and reflecting plate, which are arranged on to be equipped with quantum dot film, quantum dot film on the opposite sides of light guide plate, the light entry portal of the light guide plate, is distributed with quantum dot and yellow fluorescent powder；
The blue light that the blue-ray LED is sent is penetrated obtains mixed white light in quantum dot film, and mixed white light enters light guide plate from the side of light guide plate, and imports realization imaging on blooming piece in light.
Further, the cell wall in the solid radiating aluminum hull is the aluminium minute surface of plane, and the blue light that the aluminium minute surface sends blue-ray LED is reflected to same direction.
Further, the quantum dot film is by red light quantum point, green light quantum point and yellow fluorescent powder are constituted, the blue light that the blue-ray LED is sent out respectively enters five passages, there are three passages to be to lead to red light quantum point respectively in five passages, green light quantum point and yellow fluorescent powder, two other passage is blue light straight channel, the feux rouges that red light quantum point is sent, the part green glow and the blue light of a blue light straight channel that green light quantum point is sent turn into the first mixed white light and enter the first white light passage, the blue light of another blue light straight channel and the second mixed white light obtained after the second mixing gold-tinted mixing of yellow fluorescent powder enter the second white light passage, first mixed white light of the first white light passage is mutually converged with the second mixed white light that the second white light leads to obtains stable white light spectrum.
Compared with prior art, the beneficial effects of the invention are as follows：Relatively conventional WLED illuminating sources greatly improve color gamut wideness, can reach 110%, and compensate for quantum dot light source and there are the factors of instability；Solve the simple unstability for exporting white light using quantum dot and cause the shortcoming that its color stability is poor, cost is higher；And single blue light source adds fluorescent material to synthesize white light source, the problems such as white light colour developing domain is relatively low, and the high Cost Problems that full quantum dot is repaired；In addition, quantum dot film is arranged on reflecting plate in the present invention, it is divided into two parts with light-source structure, can effectively isolates the heat that light-source structure dissipates, further reduction quantum dot is unstable because of temperature change.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of quantum dot of the invention and the liquid crystal display of YAG fluorescent powder blending.
The diagrammatic cross-section that Fig. 2 is A-A in Fig. 1.
Fig. 3 is the quantum dot film light change schematic diagram of a kind of quantum dot of the invention and the liquid crystal display of YAG fluorescent powder blending.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with drawings and Examples, the present invention will be described in further detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Figures 1 and 2 show that one embodiment of a kind of quantum dot of the invention and the liquid crystal display of YAG fluorescent powder blending：A kind of quantum dot and the liquid crystal display of YAG fluorescent powder blending, the light-source structure is made up of solid radiating aluminum hull 1, PCB 2 and blue-ray LED 3, the solid radiating aluminum hull 1 is strip flute profile, the blue-ray LED 3 is arranged on the trough-shaped base section of solid radiating aluminum hull 1 by PCB 2, and the notch of solid radiating aluminum hull 1 is provided with transparent glass 12；The display device is made up of light guide plate 5, blooming piece 6 and reflecting plate 7, the blooming piece 6 and reflecting plate 7 are arranged on the opposite sides of light guide plate 5, it is equipped with the light entry portal of the light guide plate 5 in quantum dot film 4, quantum dot film 4 and quantum dot and yellow fluorescent powder is distributed with；
The blue light that the blue-ray LED 3 is sent is penetrated obtains mixed white light in quantum dot film 4, and mixed white light enters light guide plate 5 from the side of light guide plate 5, and imports realization imaging on blooming piece 6 in light.It is in order on the light back that will be projected from the bottom surface of light guide plate 5 to light guide plate that reflecting plate 7, which is set,.
According to another embodiment of a kind of quantum dot of the invention and the liquid crystal display of YAG fluorescent powder blending, the cell wall in the solid radiating aluminum hull 1 is the aluminium minute surface 11 of plane, and the blue light that the aluminium minute surface 11 sends blue-ray LED 3 is reflected to same direction.
Fig. 3 shows another embodiment of a kind of quantum dot of the invention and the liquid crystal display of YAG fluorescent powder blending, the quantum dot film 4 is by red light quantum point 8, green light quantum point 9 and yellow fluorescent powder 10 are constituted, the blue light that the blue-ray LED 3 is sent out respectively enters five passages, there are three passages to be to lead to red light quantum point 8 respectively in five passages, green light quantum point 9 and yellow fluorescent powder 10, two other passage is blue light straight channel, the feux rouges R that red light quantum point 8 is sent, the part green glow G and the blue light B of a blue light straight channel that green light quantum point 9 is sent are mixed into the first mixed white light W1 into the first white light passage, the blue light B of another blue light straight channel and the second mixed white light W2 obtained after the second mixing gold-tinted Y2 mixing of yellow fluorescent powder 10 enter the second white light passage, first mixed white light W1 of the first white light passage and the second logical mixed white light W2 phases of the second white light are converged and obtain stable white light spectrum W.
Although reference be made herein to invention has been described for multiple explanatory embodiments of the invention, but, it should be understood that those skilled in the art can be designed that a lot of other modification and embodiment, these modifications and embodiment will fall within spirit disclosed in the present application and spirit.More specifically, in the range of disclosure, drawings and claims, a variety of variations and modifications can be carried out to the building block and/or layout of theme composite configuration.In addition to the modification and improvement carried out to building block and/or layout, to those skilled in the art, other purposes also will be apparent.
Claims (3)
1. a kind of quantum dot and the liquid crystal display of YAG fluorescent powder blending, including light-source structure and display device, it is characterised in that：The light-source structure is by solid radiating aluminum hull（1）, PCB（2）And blue-ray LED（3）Constitute, the solid radiating aluminum hull（1）For strip flute profile, the blue-ray LED（3）Pass through PCB（2）Installed in solid radiating aluminum hull（1）Trough-shaped base section, solid radiating aluminum hull（1）Notch be provided with transparent glass（12）；
The display device is by light guide plate（5）, blooming piece（6）And reflecting plate（7）Constitute, the blooming piece（6）And reflecting plate（7）It is arranged on light guide plate（5）Opposite sides, the light guide plate（5）Light entry portal on be equipped with quantum dot film（4）, quantum dot film（4）Quantum dot and yellow fluorescent powder is inside distributed with；
The blue-ray LED（3）The blue light sent is penetrated in quantum dot film（4）Obtain mixed white light, mixed white light is from light guide plate（5）Side enter light guide plate（5）, and import blooming piece in light（6）It is upper to realize imaging.
2. a kind of quantum dot according to claim 1 and the liquid crystal display of YAG fluorescent powder blending, it is characterised in that：The solid radiating aluminum hull（1）Interior cell wall is the aluminium minute surface of plane（11）, the aluminium minute surface（11）By blue-ray LED（3）The blue light sent is reflected to same direction.
3. a kind of quantum dot according to claim 1 and the liquid crystal display of YAG fluorescent powder blending, it is characterised in that：The quantum dot film（4）By red light quantum point（8）, green light quantum point（9）And yellow fluorescent powder（10）Constitute, the blue-ray LED（3）The blue light sent out, which is respectively enterd in five passages, five passages, has three passages to be to lead to red light quantum point respectively（8）, green light quantum point（9）And yellow fluorescent powder（10）, two other passage is blue light straight channel, red light quantum point（8）The feux rouges sent（R）, green light quantum point（9）The part green glow sent（G）With the blue light of a blue light straight channel（B）It is mixed into the first mixed white light（W1）Into the first white light passage, the blue light of another blue light straight channel（B）With pass through yellow fluorescent powder（10）Second mixing gold-tinted（Y2）The second mixed white light obtained after mixing（W2）Into the second white light passage, the first mixed white light of the first white light passage（W1）The second mixed white light led to the second white light（W2）Mutually converge and obtain stable white light spectrum（W）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610235166.0A CN107300804A (en) | 2016-04-15 | 2016-04-15 | A kind of quantum dot and the liquid crystal display of YAG fluorescent powder blending |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610235166.0A CN107300804A (en) | 2016-04-15 | 2016-04-15 | A kind of quantum dot and the liquid crystal display of YAG fluorescent powder blending |
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| CN107300804A true CN107300804A (en) | 2017-10-27 |
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| CN201610235166.0A Pending CN107300804A (en) | 2016-04-15 | 2016-04-15 | A kind of quantum dot and the liquid crystal display of YAG fluorescent powder blending |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108153047A (en) * | 2017-12-20 | 2018-06-12 | 深圳市聚弘新能源有限公司 | The back light source technique that a kind of point light source excitation quantum point shines |
| CN108957858A (en) * | 2018-06-12 | 2018-12-07 | 友达光电股份有限公司 | Backlight module |
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| CN101571242A (en) * | 2009-05-27 | 2009-11-04 | 中国计量学院 | White LED light-emitting device with blue chip doped with quantum dots and YAG fluorescent powder |
| CN201666504U (en) * | 2009-12-24 | 2010-12-08 | 康佳集团股份有限公司 | Side light type back light module unit and liquid crystal display device |
| CN103791322A (en) * | 2013-10-29 | 2014-05-14 | 友达光电股份有限公司 | Backlight module and display panel using same |
| CN104483778A (en) * | 2014-12-31 | 2015-04-01 | 上海中航光电子有限公司 | Light emitting device, backlight module and liquid crystal display device |
| CN205809481U (en) * | 2016-04-15 | 2016-12-14 | 深圳市华想世纪科技有限公司 | A kind of quantum dot and the liquid crystal display of YAG fluorescent powder blending |
-
2016
- 2016-04-15 CN CN201610235166.0A patent/CN107300804A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571242A (en) * | 2009-05-27 | 2009-11-04 | 中国计量学院 | White LED light-emitting device with blue chip doped with quantum dots and YAG fluorescent powder |
| CN201666504U (en) * | 2009-12-24 | 2010-12-08 | 康佳集团股份有限公司 | Side light type back light module unit and liquid crystal display device |
| CN103791322A (en) * | 2013-10-29 | 2014-05-14 | 友达光电股份有限公司 | Backlight module and display panel using same |
| CN104483778A (en) * | 2014-12-31 | 2015-04-01 | 上海中航光电子有限公司 | Light emitting device, backlight module and liquid crystal display device |
| CN205809481U (en) * | 2016-04-15 | 2016-12-14 | 深圳市华想世纪科技有限公司 | A kind of quantum dot and the liquid crystal display of YAG fluorescent powder blending |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108153047A (en) * | 2017-12-20 | 2018-06-12 | 深圳市聚弘新能源有限公司 | The back light source technique that a kind of point light source excitation quantum point shines |
| CN108957858A (en) * | 2018-06-12 | 2018-12-07 | 友达光电股份有限公司 | Backlight module |
| CN108957858B (en) * | 2018-06-12 | 2021-06-08 | 友达光电股份有限公司 | Backlight Module |
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Application publication date: 20171027 |