CN109859629A - A kind of flexible LED display film - Google Patents
A kind of flexible LED display film Download PDFInfo
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- CN109859629A CN109859629A CN201811617895.8A CN201811617895A CN109859629A CN 109859629 A CN109859629 A CN 109859629A CN 201811617895 A CN201811617895 A CN 201811617895A CN 109859629 A CN109859629 A CN 109859629A
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- layer
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- flexible led
- phosphor powder
- led
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Abstract
The application belongs to electroluminescent device technical field, shows film more particularly to a kind of flexible LED.Existing flexible LED shows that membrane structure is more complicated, so that manufacturing procedure is many and diverse, increases the cost of product.The application provides a kind of flexible LED display film, including separation layer, phosphor powder layer, polyimide base film and the filter layer set gradually；The polyimide base film includes first surface and second surface, and the phosphor powder layer is coated on the first surface, and the second surface exposure mask goes out the filter layer, and the phosphor powder layer exposure mask goes out separation layer.Due to using polyimide base film in the application, so that LED shows that the flexible of film increases.This application involves LED show that membrane structure is simple, production process is convenient, substantially reduces the production cost that LED shows film.
Description
Technical field
The application belongs to electroluminescent device technical field, shows film more particularly to a kind of flexible LED.
Background technique
LED, light emitting diode (light emitting diode abbreviation).It is a kind of by control semiconductor light emitting two
The display mode of pole pipe, gallium (Ga) and arsenic (As), phosphorus (P), nitrogen (N), indium (In) compound made of diode, work as electronics
With can give off visible light when hole-recombination, thus can be used to that light emitting diode is made.As instruction in circuit and instrument
Lamp, or composition text or number display.Gallium arsenide phosphide diode glows, gallium phosphide diode green light, two pole of silicon carbide
Pipe Yellow light-emitting low temperature, indium gallium nitrogen diode blue light-emitting.LED display (LED display) is a kind of flat-panel monitor, by small one by one
LED module panel composition, the equipment for showing the various information such as text, image, video, video signal.
With the development of society and the raising of people's material and culture level, LED display has progressed into personal home-use
Family needs corresponding flexible LED display screen to realize in the purpose that the occasions such as certain curved-surface building objects use, wherein flexible
Display film is the key that flexible LED display screen moves towards application.
Existing flexible LED shows that membrane structure is more complicated, so that manufacturing procedure is many and diverse, increases the cost of product.
Summary of the invention
1. technical problems to be solved
It shows that membrane structure is more complicated based on existing flexible LED, so that manufacturing procedure is many and diverse, increases the cost of product
The problem of, this application provides a kind of flexible LEDs to show film.
2. technical solution
To achieve the above object, this application provides a kind of flexible LEDs to show film, including the isolation set gradually
Layer, phosphor powder layer, polyimide base film and filter layer；
The polyimide base film includes first surface and second surface, and the fluorescent powder is coated on the first surface
Layer, the second surface exposure mask go out the filter layer, and the phosphor powder layer exposure mask goes out separation layer.
Optionally, the separation layer includes shading layering.
Optionally, the phosphor powder layer includes blue light excitation piece.
Optionally, doped with fluoride in the polyimide base film.
Optionally, the filter layer includes optical filter.
Optionally, optical channel is provided on the separation layer.
3. beneficial effect
Compared with prior art, a kind of flexible LED provided by the present application shows that the beneficial effect of film is:
A kind of flexible LED provided by the present application shows film, by setting gradually separation layer, phosphor powder layer, polyimides
Basement membrane and filter layer after separation layer, are had an effect after the blue-light LED chip for being shines with phosphor powder layer, and excitation skilled worker is mixed
The recombined white light for forming RGB wave band is closed, finally forms monochromatic light under the action of filter layer, due to using polyamides sub- in the application
Amido film, so that LED shows that the flexible of film increases.This application involves LED show membrane structure it is simple, production process side
Just, the production cost that LED shows film is substantially reduced.
Detailed description of the invention
Fig. 1 is that a kind of flexible LED of the application shows diaphragm principle schematic diagram；
Fig. 2 is that a kind of flexible LED of the application shows membrane structure schematic diagram；
Fig. 3 is that a kind of flexible LED of the application shows the three-view diagram of one pixel of film；
In figure: 1- separation layer, 2- phosphor powder layer, 3- polyimide base film, 4- filter layer, 5- optical channel.
Specific embodiment
Hereinafter, specific embodiment of the reference attached drawing to the application is described in detail, it is detailed according to these
Description, one of ordinary skill in the art can implement the application it can be clearly understood that the application.Without prejudice to the application principle
In the case where, the feature in each different embodiment can be combined to obtain new embodiment, or be substituted certain
Certain features in embodiment, obtain other preferred embodiments.
Kapton (PolyimideFilm) is the film class insulating materials that performance is best in the world, by equal benzene four
Formic acid dianhydride (PMDA) and diaminodiphenyl ether (DDE) in intensive polar solvent through polycondensation and casting film-forming again through imidization and
At.In yellow transparent, relative density 1.39~1.45, Kapton have excellent resistant of high or low temperature, electric insulating quality,
Caking property, radiation resistance, resistance to medium can be used for a long time within the temperature range of -269 DEG C~280 DEG C, can reach 400 in short-term
DEG C high temperature.Glass transition temperature is respectively 280 DEG C (Upilex R), 385 DEG C (Kapton) and 500 DEG C or more (Upilex S).
Tensile strength is 200MPa at 20 DEG C, and 100MPa is greater than at 200 DEG C.It is particularly suitable as flexible circuit board substrate and various
Heat resisting motor electrical apparatus insulation material.
Exposure mask (MASK) refers to that single-chip microcontroller exposure mask refers to that program data has been made into reticle, in the process of single-chip microcontroller production
It is middle that program is done into.Exposure mask is a kind of template of image filters, and what practical exposure mask was often handled is remote sensing images.When extraction road
Road perhaps river or when house, carries out pixel filtering to image by the matrix of a n*n, then needs us
Atural object or mark highlight out.This matrix is exactly a kind of exposure mask.
Optical filter is the optical device for choosing required radiation wave band.One general character of optical filter, is exactly not any
Optical filter can allow the imaging of celestial body to become brighter, because all optical filters can all absorb certain wavelength, so that object be made to become
It obtains darker.Optical filter is that plastics or sheet glass add special dye and be made into, and Red lightscreening plate can only allow feux rouges to pass through, so
Analogize.The transmissivity of sheet glass is originally similar with air, and all colored lights can pass through, so being transparent, but contaminates
After dyestuff, molecule structure change, refractive index also changes, to certain coloured light by just changing.Such as it is a branch of white
For light by blue color filter, injection is a branch of blue light, and green light, feux rouges are few, most of to be absorbed by optical filter.
Referring to Fig. 1~3, the application provides a kind of flexible LED display film, including separation layer 1, the fluorescent powder set gradually
Layer 2, polyimide base film 3 and filter layer 4；
The polyimide base film 3 includes first surface and second surface, coats the fluorescent powder on the first surface
Layer 2, the second surface exposure mask goes out the filter layer 4, and 2 exposure mask of phosphor powder layer goes out separation layer 1.
Optionally, the separation layer 1 is layered including shading.Here separation layer 1 mainly includes light screening material.
Optionally, the phosphor powder layer 2 includes that blue light excites piece.
Optionally, doped with fluoride in the polyimide base film 3.
Optionally, the filter layer 4 includes optical filter.
Optionally, optical channel 5 is provided on the separation layer 1.
Referring to fig. 2~3, the application illustrates as the size of a pixel unit, according to 1R1G1B sequence into
Row arrangement, and pixel size is 1mm, corresponding P1 display screen.
Filter layer 4 is t in Fig. 21That layer of thickness, the purpose is to recombined white light is filtered into RGB monochromatic light, and then group
Synthesize the light of various colors.
Polyimide base film 3 is t in Fig. 22That layer of thickness, making film integrally has certain flexibility.Here it selects
Doped with the PI basal lamina material of fluoride, which not only has ideal transmitance, but also its surface roughness is smaller,
It is not easy to form defect when bending.
Phosphor powder layer 2 is t in Fig. 23That layer of thickness, the purpose is to the blue light excitation received is added to be mixed to form
The recombined white light of RGB wave band.Phosphor powder layer 2 uses KSF red fluorescence powder and beta Sialon green emitting phosphor according to a certain percentage
It is mixed to get, the presence of phosphor powder layer 2 can be converted to blue light beam the recombined white light containing RGB wave band, and tri- wave band of RGB
For more independent wave crest.
Separation layer 1 is t in Fig. 24That layer of thickness implies that in 1 pixel the purpose is to prevent the crosstalk between light beam
3 chips can independent effect, preferably realize matrix addressing function.The effect of separation layer 1 is ensuring that each core
Piece can independently shine, and will not influence each other, therefore separation layer 1 mainly includes some light screening materials.
The light emitting angle that blue chip is arranged is 120 °, and light-emitting angle is 2 α, removes cross talk effects according to radiation diagram
Remaining light intensity accounts for the percentage of former light intensity afterwards.
It can be found out by geometrical relationship:
D=1/3mm-2t4·tanα
Judge (t1+t2+t3+t4) size relation of tan α and 1/6mm adjusts the size at the angle α, make structure avoid going here and there
The generation disturbed
Specifically, in order to make structure avoid the generation of crosstalk, (t is calculated1+t2+t3+t4) tan α numerical value withIt is compared, if (t1+t2+t3+t4) numerical value of tan α a is greater thanIt then needs to reduce light emitting angle.
Although the application is described above by referring to specific embodiment, one of ordinary skill in the art are answered
Work as understanding, in principle disclosed in the present application and range, many modifications can be made for configuration disclosed in the present application and details.
The protection scope of the application is determined by the attached claims, and claim is intended to technical characteristic in claim
Equivalent literal meaning or range whole modifications for being included.
Claims (6)
1. a kind of flexible LED shows film, it is characterised in that: including separation layer (1), the phosphor powder layer (2), polyamides set gradually
Imines basement membrane (3) and filter layer (4)；
The polyimide base film (3) includes first surface and second surface, and the phosphor powder layer is coated on the first surface
(2), the second surface exposure mask goes out the filter layer (4), and phosphor powder layer (2) exposure mask goes out separation layer (1).
2. flexible LED as described in claim 1 shows film, it is characterised in that: the separation layer (1) includes shading layering.
3. flexible LED as described in claim 1 shows film, it is characterised in that: the phosphor powder layer (2) includes blue light excitation
Piece.
4. flexible LED as described in claim 1 shows film, it is characterised in that: in the polyimide base film (3) doped with
Fluoride.
5. flexible LED as described in claim 1 shows film, it is characterised in that: the filter layer (4) includes optical filter.
6. as flexible LED according to any one of claims 1 to 5 shows film, it is characterised in that: on the separation layer (1)
It is provided with optical channel (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811617895.8A CN109859629A (en) | 2018-12-28 | 2018-12-28 | A kind of flexible LED display film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811617895.8A CN109859629A (en) | 2018-12-28 | 2018-12-28 | A kind of flexible LED display film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109859629A true CN109859629A (en) | 2019-06-07 |
Family
ID=66892863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811617895.8A Pending CN109859629A (en) | 2018-12-28 | 2018-12-28 | A kind of flexible LED display film |
Country Status (1)
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Citations (12)
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| JPH0720793A (en) * | 1993-07-06 | 1995-01-24 | Katsuhiko Seki | Production of black mask filter for led display by screen printing |
| CN1604709A (en) * | 2003-10-02 | 2005-04-06 | 株式会社丰田自动织机 | Organic electroluminescent element and organic electroluminescent device including the same |
| CN102867914A (en) * | 2011-07-04 | 2013-01-09 | 索尼公司 | Electronic device and method of manufacturing semiconductor device |
| CN103459549A (en) * | 2011-03-31 | 2013-12-18 | 松下电器产业株式会社 | Fluorescent film and display film |
| CN104821359A (en) * | 2014-02-04 | 2015-08-05 | 豪雅冠得股份有限公司 | Light emitting device and manufacturing method therefor |
| CN105765744A (en) * | 2013-10-24 | 2016-07-13 | 东丽株式会社 | Phosphor composition, phosphor sheet, phosphor sheet laminate, LED chip and LED package each using said phosphor composition, phosphor sheet or phosphor sheet laminate, and method for manufacturing LED package |
| US20160369955A1 (en) * | 2015-06-22 | 2016-12-22 | CoreLed Systems, LLC | Enhanced color rendering lens for white leds |
| CN106409757A (en) * | 2015-07-31 | 2017-02-15 | 三星电子株式会社 | Methods of fabricating a semiconductor device |
| CN106967412A (en) * | 2015-12-15 | 2017-07-21 | 夏普株式会社 | Containing phosphor particle and using it light-emitting device, containing phosphor plates |
| CN106990614A (en) * | 2017-06-12 | 2017-07-28 | 京东方科技集团股份有限公司 | A kind of substrate and preparation method thereof, display panel and display device |
| CN108603957A (en) * | 2016-02-19 | 2018-09-28 | 东丽株式会社 | Color conversion sheet, light source unit, display and lighting device comprising it |
| CN109064893A (en) * | 2018-08-07 | 2018-12-21 | 广东迅扬科技股份有限公司 | A kind of flexible full-colored LED display screen |
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2018
- 2018-12-28 CN CN201811617895.8A patent/CN109859629A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0720793A (en) * | 1993-07-06 | 1995-01-24 | Katsuhiko Seki | Production of black mask filter for led display by screen printing |
| CN1604709A (en) * | 2003-10-02 | 2005-04-06 | 株式会社丰田自动织机 | Organic electroluminescent element and organic electroluminescent device including the same |
| CN103459549A (en) * | 2011-03-31 | 2013-12-18 | 松下电器产业株式会社 | Fluorescent film and display film |
| CN102867914A (en) * | 2011-07-04 | 2013-01-09 | 索尼公司 | Electronic device and method of manufacturing semiconductor device |
| CN105765744A (en) * | 2013-10-24 | 2016-07-13 | 东丽株式会社 | Phosphor composition, phosphor sheet, phosphor sheet laminate, LED chip and LED package each using said phosphor composition, phosphor sheet or phosphor sheet laminate, and method for manufacturing LED package |
| CN104821359A (en) * | 2014-02-04 | 2015-08-05 | 豪雅冠得股份有限公司 | Light emitting device and manufacturing method therefor |
| US20160369955A1 (en) * | 2015-06-22 | 2016-12-22 | CoreLed Systems, LLC | Enhanced color rendering lens for white leds |
| CN106409757A (en) * | 2015-07-31 | 2017-02-15 | 三星电子株式会社 | Methods of fabricating a semiconductor device |
| CN106967412A (en) * | 2015-12-15 | 2017-07-21 | 夏普株式会社 | Containing phosphor particle and using it light-emitting device, containing phosphor plates |
| CN108603957A (en) * | 2016-02-19 | 2018-09-28 | 东丽株式会社 | Color conversion sheet, light source unit, display and lighting device comprising it |
| CN106990614A (en) * | 2017-06-12 | 2017-07-28 | 京东方科技集团股份有限公司 | A kind of substrate and preparation method thereof, display panel and display device |
| CN109064893A (en) * | 2018-08-07 | 2018-12-21 | 广东迅扬科技股份有限公司 | A kind of flexible full-colored LED display screen |
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Application publication date: 20190607 |