CN105629578A - Quantum dot fluorescent screen - Google Patents
Quantum dot fluorescent screen Download PDFInfo
- Publication number
- CN105629578A CN105629578A CN201610212462.9A CN201610212462A CN105629578A CN 105629578 A CN105629578 A CN 105629578A CN 201610212462 A CN201610212462 A CN 201610212462A CN 105629578 A CN105629578 A CN 105629578A
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- quantum dot
- dot fluorescence
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- film
- dot fluorescent
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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
-
- 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
Abstract
The invention discloses a quantum dot fluorescent screen. The quantum dot fluorescent screen comprises a frame, and a liquid crystal module and a backlight module which are fixedly mounted in the frame, wherein the backlight module is mounted on the back surface of the liquid crystal module and comprises a quantum dot fluorescent module, a diffusion film arranged above the quantum dot fluorescent module and a full-reflection film which is arranged under the quantum dot fluorescent module. According to the quantum dot fluorescent screen disclosed by the invention, a quantum dot fluorescent film is added into the liquid crystal module and red and green quantum dots in the quantum dot fluorescent film are stimulated through a blue-light LED chip, and blue light is converted into white light for constructing a white backlight source, so that a display panel has a relatively wide color gamut, relatively high color purity and relatively good color expression, and furthermore, the display property of the liquid crystal panel is improved. The quantum dot fluorescent film can be directly added into the liquid crystal module, so that the assembling is simple and convenient and an extra process flow is not increased; and furthermore, the quantum dot fluorescent screen can be also matched with side light type and straight down type backlight sources.
Description
Technical field:
The present invention relates to field of liquid crystal, what be specifically related to is a kind of quantum dot fluorescence screen.
Background technology:
The liquid crystal display panel of current main flow mainly contains two kinds of backlight modes, and one is CCFL, and one is LED. The advantage of CCFL is that color representation is good, and deficiency is that power consumption is higher; And the advantage of LED to be volume little, low in energy consumption, it is possible to taking into account frivolous and higher brightness, weak point is that color representation is poorer than CCFL.
Summary of the invention:
In view of the above problems, it is an object of the invention to provide a kind of colour gamut width, the quantum dot fluorescence screen that purity of color height, color representation power are good.
For achieving the above object, the present invention mainly adopts following technical scheme:
A kind of quantum dot fluorescence screen, the liquid crystal module comprising frame and be fixedly installed in frame and backlight module, described backlight module is arranged on the liquid crystal module back side, and described backlight module comprises quantum dot fluorescence module, is arranged at the diffusion barrier above quantum dot fluorescence module and is arranged at the total reflection film below quantum dot fluorescence module.
Preferably, described quantum dot fluorescence module is by one-body molded from upper upper brightness enhancement film, lower brightness enhancement film, diffuser plate, quantum dot fluorescence film and the light guiding plate arranged successively downwards.
Preferably, described quantum dot fluorescence module comprises the upper brightness enhancement film arranged successively from top to bottom, lower brightness enhancement film, diffuser plate, quantum dot fluorescence film and light guiding plate.
Preferably, described light guiding plate is taper type, and side is provided with light source, and the arranged outside of this light source has a reflector plate.
Preferably, described light source is blue-light LED chip.
Preferably, described quantum dot fluorescence module is by one-body molded from upper upper brightness enhancement film, lower brightness enhancement film, quantum dot fluorescence film and the diffuser plate arranged successively downwards.
Preferably, described quantum dot fluorescence module comprises the upper brightness enhancement film arranged successively from top to bottom, lower brightness enhancement film, quantum dot fluorescence film and diffuser plate.
Preferably, some light sources it are provided with between described total reflection film and diffuser plate.
Preferably, described light source is blue-light LED chip.
Preferably, described quantum dot fluorescence film thickness is between 100um-300um.
Quantum dot fluorescence film is joined in liquid-crystal display module by the present invention, and the red green quantum dot in quantum dot fluorescent screen is excited by blue-light LED chip, become white light to build white light backlight indigo plant phototransformation, thus make display panel have broader colour gamut, higher purity of color, better color representation power, and then improve the display performance of display panels. Owing to quantum dot fluorescence film of the present invention can directly join in liquid-crystal display module, therefore simple and convenient assembly, does not increase extra technical process, and it can be suitable for side-light type and direct-light-type backlight.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of quantum dot fluorescence of the present invention screen;
Fig. 2 is the structural representation of the first embodiment of quantum dot fluorescence of the present invention screen;
Fig. 3 is the structural representation of the 2nd kind of embodiment of quantum dot fluorescence of the present invention screen;
Fig. 4 is the structural representation of the third embodiment of quantum dot fluorescence of the present invention screen;
Fig. 5 is the structural representation of the 4th kind of embodiment of quantum dot fluorescence of the present invention screen.
Identifier declaration in figure: liquid crystal module 10, backlight module 20, diffusion barrier 21, quantum dot fluorescence module 22, upper brightness enhancement film 221, lower brightness enhancement film 222, diffuser plate 223, quantum dot fluorescence film 224, light guiding plate 225, total reflection film 23, light source 24, reflector plate 25, frame 30.
Embodiment:
For setting forth thought and the object of the present invention, below in conjunction with the drawings and specific embodiments, the present invention is described further.
For the problems of the prior art, the quantum dot fluorescence screen that the present invention provides a kind of colour gamut width, purity of color height, color representation power are good.
Shown in Figure 1, Fig. 1 is the structural representation of quantum dot fluorescence of the present invention screen. Quantum dot fluorescence of the present invention screen includes frame 30 and the liquid crystal module 10 being fixedly mounted in frame 30 and backlight module 20, wherein backlight module 20 is fixedly mounted on the back side of liquid crystal module 10, and be coated and fixed by frame 30, to form the support to backlight module 10.
Embodiment one
Shown in Figure 2, Fig. 2 is the structural representation of the first embodiment of quantum dot fluorescence of the present invention screen. Backlight module 20 in the present embodiment is side-light backlight module, and it comprises quantum dot fluorescence module 22, is arranged at the diffusion barrier 21 above quantum dot fluorescence module 22 and is arranged at the total reflection film 23 below quantum dot fluorescence module 22.
In the present embodiment, quantum dot fluorescence module 22 is one-body molded, and it includes brightness enhancement film, diffuser plate, quantum dot fluorescence film and light guiding plate. Described diffusion barrier is positioned at above brightness enhancement film, and it is mainly used in diffusion optical fiber, protection brightness enhancement film; Brightness enhancement film includes brightness enhancement film and lower brightness enhancement film, for increasing briliancy, effectively to utilize luminous energy; Diffuser plate is positioned at the lower section of brightness enhancement film, is mainly used in light source at random, fuzzy site; The lower section of diffuser plate is provided with quantum dot fluorescence film, is provided with light guiding plate below quantum dot fluorescence film, and line source, for the light source that distributes, is converted to area source by described light guiding plate. In the present embodiment, the thickness of quantum dot fluorescence film is between 100um-300um, it mainly includes emitting red light unit and green emitting unit, described emitting red light unit comprises red quantum dot, described green emitting unit comprises green quantum dot, and the emission wavelength of red light quantum point fluorescent screen is 620nm��660nm, half maximum value all-wave is less than 45nm; The emission wavelength of described green light quantum point fluorescent screen is 520nm��540nm, and half maximum value all-wave is less than 45nm. Above-mentioned red quantum dot, green quantum dot, alkali soluble resin, solvent, dispersion agent and additive are mainly mixed by the present embodiment quantum dot fluorescence film by a certain percentage, obtain quantum dot resin combination, form quantum dot composite gum, then adopt the mode revolving painting or slit coating evenly to be coated with on the substrate by described quantum dot resin combination according to the substrate of correspondence, then the carrying out of son (100-150 DEG C) at a certain temperature is kept to toast, remove the organic solvent in quantum dot resin combination, thus obtain quantum dot fluorescence film.
In the present embodiment, light guiding plate is taper type or cone cylindricality, and its side area is greater than other side, and its bigger one side is provided with light source 24, and the arranged outside of light source 24 has a reflector plate 25. Described light source 24 is blue-light LED chip, and its blue light correspondence that can be produced by reflector plate 25 is penetrated by light guiding plate.
Also it is provided with a total reflection film 23 in the lower section of light guiding plate, the light correspondence sent by light guiding plate can be reflected by total reflection film 23, to avoid the waste of light source, overall briliancy can also be increased simultaneously.
Embodiment two
Shown in Figure 3, Fig. 3 is the structural representation of the 2nd kind of embodiment of quantum dot fluorescence of the present invention screen. Backlight module 20 in the present embodiment is side-light backlight module, and it comprises quantum dot fluorescence module 22, is arranged at the diffusion barrier 21 above quantum dot fluorescence module 22 and is arranged at the total reflection film 23 below quantum dot fluorescence module 22.
In the present embodiment, quantum dot fluorescence module 22 comprises the upper brightness enhancement film 221, lower brightness enhancement film 222, diffuser plate 223, quantum dot fluorescence film 224 and the light guiding plate 225 that arrange successively from top to bottom. Wherein diffusion barrier 21 is positioned at the top of brightness enhancement film 221, and it is mainly used in diffusion optical fiber, protection brightness enhancement film; The lower section of upper brightness enhancement film 221 is provided with lower brightness enhancement film 222, and the two acting in conjunction is to increase briliancy, thus effectively utilizes luminous energy; Diffuser plate 223 is positioned at the lower section of lower brightness enhancement film 222, is mainly used in light source at random, fuzzy site; The lower section of diffuser plate 223 is provided with quantum dot fluorescence film 225, and the lower section of quantum dot fluorescence film 224 is provided with light guiding plate 225, and line source, for the light source that distributes, is converted to area source by described light guiding plate 225. In the present embodiment, the thickness of quantum dot fluorescence film is between 100um-300um, it mainly includes emitting red light unit and green emitting unit, described emitting red light unit comprises red quantum dot, described green emitting unit comprises green quantum dot, and the emission wavelength of red light quantum point fluorescent screen is 620nm��660nm, half maximum value all-wave is less than 45nm; The emission wavelength of described green light quantum point fluorescent screen is 520nm��540nm, and half maximum value all-wave is less than 45nm. Above-mentioned red quantum dot, green quantum dot, alkali soluble resin, solvent, dispersion agent and additive are mainly mixed by the present embodiment quantum dot fluorescence film by a certain percentage, obtain quantum dot resin combination, form quantum dot composite gum, then adopt the mode revolving painting or slit coating evenly to be coated with on the substrate by described quantum dot resin combination according to the substrate of correspondence, then the carrying out of son (100-150 DEG C) at a certain temperature is kept to toast, remove the organic solvent in quantum dot resin combination, thus obtain quantum dot fluorescence film.
In the present embodiment, light guiding plate 225 is taper type or cone cylindricality, and its side area is greater than other side, and its bigger one side is provided with light source 24, and the arranged outside of light source 24 has a reflector plate 25. Described light source 24 is blue-light LED chip, and its blue light correspondence that can be produced by reflector plate 25 is penetrated by light guiding plate.
Also it is provided with a total reflection film 23 in the lower section of light guiding plate 225, the light correspondence sent by light guiding plate 225 can be reflected by total reflection film 23, to avoid the waste of light source, overall briliancy can also be increased simultaneously.
Embodiment three
Shown in Figure 4, Fig. 4 is the structural representation of the third embodiment of quantum dot fluorescence of the present invention screen. Backlight module 20 in the present embodiment is down straight aphototropism mode set, and it comprises quantum dot fluorescence module 22, is arranged at the diffusion barrier 21 above quantum dot fluorescence module 22 and is arranged at the total reflection film 23 below quantum dot fluorescence module 22.
In the present embodiment, quantum dot fluorescence module 22 is one-body molded, and it includes brightness enhancement film, quantum dot fluorescence film and diffuser plate. Diffusion barrier is positioned at above brightness enhancement film, and it is mainly used in diffusion optical fiber, protection brightness enhancement film; Brightness enhancement film includes brightness enhancement film and lower brightness enhancement film, for increasing briliancy, effectively to utilize luminous energy; Quantum dot fluorescence film is positioned at the lower section of brightness enhancement film, and diffuser plate is positioned at below quantum dot fluorescence film, is mainly used in light source at random, fuzzy site.
In the present embodiment, the thickness of quantum dot fluorescence film is between 100um-300um, it mainly includes emitting red light unit and green emitting unit, described emitting red light unit comprises red quantum dot, described green emitting unit comprises green quantum dot, and the emission wavelength of red light quantum point fluorescent screen is 620nm��660nm, half maximum value all-wave is less than 45nm; The emission wavelength of described green light quantum point fluorescent screen is 520nm��540nm, and half maximum value all-wave is less than 45nm. Above-mentioned red quantum dot, green quantum dot, alkali soluble resin, solvent, dispersion agent and additive are mainly mixed by the present embodiment quantum dot fluorescence film by a certain percentage, obtain quantum dot resin combination, form quantum dot composite gum, then adopt the mode revolving painting or slit coating evenly to be coated with on the substrate by described quantum dot resin combination according to the substrate of correspondence, then the carrying out of son (100-150 DEG C) at a certain temperature is kept to toast, remove the organic solvent in quantum dot resin combination, thus obtain quantum dot fluorescence film.
A total reflection film 23 also it is provided with in the lower section of diffuser plate, and corresponding between total reflection film 23 and diffuser plate it is provided with some light sources 24, described light source 24 is blue-light LED chip, the blue light correspondence that can be produced by total reflection film 23 is penetrated by diffuser plate, to avoid the waste of light source, overall briliancy can also be increased simultaneously.
Embodiment four
Shown in Figure 5, Fig. 5 is the structural representation of the 4th kind of embodiment of quantum dot fluorescence of the present invention screen. Backlight module 20 in the present embodiment is down straight aphototropism mode set, and it comprises quantum dot fluorescence module 22, is arranged at the diffusion barrier 21 above quantum dot fluorescence module 22 and is arranged at the total reflection film 23 below quantum dot fluorescence module 22.
Quantum dot fluorescence module 22 in the present embodiment, includes brightness enhancement film 221, lower brightness enhancement film 222, diffuser plate 223 and quantum dot fluorescence film 224. Wherein go up brightness enhancement film 221 to be positioned at above lower brightness enhancement film 222, and quantum dot fluorescence film 224 is between diffuser plate 223 and lower brightness enhancement film 222.
Diffusion barrier 21 is positioned at the top of brightness enhancement film 221, and it is mainly used in diffusion optical fiber, brightness enhancement film 221 in protection; Upper brightness enhancement film 221 and lower brightness enhancement film 222 form brightness enhancement film be mainly used in increase briliancy, effectively to utilize luminous energy; Diffuser plate 223 is positioned at the lower section of quantum dot fluorescence film 224, is mainly used in light source at random, fuzzy site.
In the present embodiment, the thickness of quantum dot fluorescence film is between 100um-300um, it mainly includes emitting red light unit and green emitting unit, described emitting red light unit comprises red quantum dot, described green emitting unit comprises green quantum dot, and the emission wavelength of red light quantum point fluorescent screen is 620nm��660nm, half maximum value all-wave is less than 45nm; The emission wavelength of described green light quantum point fluorescent screen is 520nm��540nm, and half maximum value all-wave is less than 45nm. Above-mentioned red quantum dot, green quantum dot, alkali soluble resin, solvent, dispersion agent and additive are mainly mixed by the present embodiment quantum dot fluorescence film by a certain percentage, obtain quantum dot resin combination, form quantum dot composite gum, then adopt the mode revolving painting or slit coating evenly to be coated with on the substrate by described quantum dot resin combination according to the substrate of correspondence, then the carrying out of son (100-150 DEG C) at a certain temperature is kept to toast, remove the organic solvent in quantum dot resin combination, thus obtain quantum dot fluorescence film.
A total reflection film 23 also it is provided with in the lower section of diffuser plate, and corresponding between total reflection film 23 with diffuser plate 223 it is provided with some light sources 24, described light source 24 is blue-light LED chip, the blue light correspondence that can be produced by total reflection film 23 is penetrated by diffuser plate, to avoid the waste of light source, overall briliancy can also be increased simultaneously.
In sum, the present invention adopts the mode of blue-light LED chip incorporating quantum point fluorescent screen, the white area source (LCD backlight module) formed, instead of the white area source of original white lamp (blue chip+fluorescent material forms white lamp). Due to RGB tri-look system independent distribution of the present invention, higher purity of color and stronger color representation power therefore can be obtained.
The present invention is described to be of a size of the standard 7# quantum dot liquid crystal display of 15.08cm*9.42cm, its white color coordinate of backlight module after quantum dot fluorescence film is adopted to be (x=0.24-0.35, y=0.24-0.35), quantum dot liquid crystal display life test, 50000 hours qualified. Colour gamut index parameter is: R (0.6238,0.3084); G (0.2554,0.6393); B (0.1780,0.1486).
It is more than that quantum dot fluorescence provided by the present invention screen is described in detail, applying specific case herein the structural principle of the present invention and enforcement mode to have been set forth, above embodiment is just for helping the method understanding the present invention and core concept thereof; Meanwhile, for one of ordinary skill in the art, according to the thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. a quantum dot fluorescence screen, comprise frame (30) and the liquid crystal module (10) being fixedly installed in frame (30) and backlight module (20), described backlight module (20) is arranged on liquid crystal module (10) back side, it is characterized in that, described backlight module (20) comprises quantum dot fluorescence module (22), the diffusion barrier (21) of the top that is arranged at quantum dot fluorescence module (22) and be arranged at the total reflection film (23) below quantum dot fluorescence module (22).
2. quantum dot fluorescence screen as claimed in claim 1, it is characterized in that, described quantum dot fluorescence module (22) is by one-body molded from upper upper brightness enhancement film (221), lower brightness enhancement film (222), diffuser plate (223), quantum dot fluorescence film (224) and the light guiding plate (225) arranged successively downwards.
3. quantum dot fluorescence screen as claimed in claim 2, it is characterized in that, described quantum dot fluorescence module (22) comprises the upper brightness enhancement film (221) arranged successively from top to bottom, lower brightness enhancement film (222), diffuser plate (223), quantum dot fluorescence film (224) and light guiding plate (225).
4. quantum dot fluorescence shields as claimed in claim 2 or claim 3, it is characterized in that, described light guiding plate (225) is taper type, and its bigger one side is provided with light source (24), and the arranged outside of this light source (24) has a reflector plate (25).
5. quantum dot fluorescence screen as claimed in claim 4, it is characterised in that, described light source (24) is blue-light LED chip.
6. quantum dot fluorescence screen as claimed in claim 1, it is characterized in that, described quantum dot fluorescence module (22) is by one-body molded from upper upper brightness enhancement film (221), lower brightness enhancement film (222), quantum dot fluorescence film (224) and the diffuser plate (223) arranged successively downwards.
7. quantum dot fluorescence screen as claimed in claim 1, it is characterized in that, described quantum dot fluorescence module (22) comprises the upper brightness enhancement film (221) arranged successively from top to bottom, lower brightness enhancement film (222), quantum dot fluorescence film (224) and diffuser plate (223).
8. as claimed in claims 6 or 7 quantum dot fluorescence screen, it is characterised in that, be provided with some light sources (24) between described total reflection film (23) and diffuser plate (223).
9. quantum dot fluorescence screen as claimed in claim 8, it is characterised in that, described light source (24) is blue-light LED chip.
10. as described in claim 2,3,6 or 7 quantum dot fluorescence screen, it is characterised in that, described quantum dot fluorescence film (224) thickness is between 100um-300um.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610212462.9A CN105629578A (en) | 2016-04-07 | 2016-04-07 | Quantum dot fluorescent screen |
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| CN201610212462.9A CN105629578A (en) | 2016-04-07 | 2016-04-07 | Quantum dot fluorescent screen |
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| CN107132693A (en) * | 2017-05-10 | 2017-09-05 | 南通天鸿镭射科技有限公司 | A kind of quantum dot fluorescence screen |
| CN107329201A (en) * | 2017-07-03 | 2017-11-07 | 深圳Tcl新技术有限公司 | Side entrance back module and display device |
| CN108181675A (en) * | 2017-12-26 | 2018-06-19 | 江西省平波电子有限公司 | A kind of Rimless TFT liquid crystal display die sets |
| CN108299802A (en) * | 2017-12-26 | 2018-07-20 | 江西省平波电子有限公司 | A kind of high colour gamut liquid crystal display die set |
| CN111063269A (en) * | 2019-12-17 | 2020-04-24 | 深圳市华星光电半导体显示技术有限公司 | Display panel |
| CN114203033A (en) * | 2021-11-16 | 2022-03-18 | 深圳市高展光电有限公司 | Prevent blue light display screen subassembly |
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| CN108181675A (en) * | 2017-12-26 | 2018-06-19 | 江西省平波电子有限公司 | A kind of Rimless TFT liquid crystal display die sets |
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| CN114203033A (en) * | 2021-11-16 | 2022-03-18 | 深圳市高展光电有限公司 | Prevent blue light display screen subassembly |
| CN114203033B (en) * | 2021-11-16 | 2023-09-08 | 深圳市高展光电有限公司 | Blue light prevention display screen assembly |
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Application publication date: 20160601 |