CN108089376A - A kind of direct-type backlight diaphragm structure - Google Patents
A kind of direct-type backlight diaphragm structure Download PDFInfo
- Publication number
- CN108089376A CN108089376A CN201711484540.1A CN201711484540A CN108089376A CN 108089376 A CN108089376 A CN 108089376A CN 201711484540 A CN201711484540 A CN 201711484540A CN 108089376 A CN108089376 A CN 108089376A
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- Prior art keywords
- optical
- fluorescent powder
- diffusion
- direct
- film
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Classifications
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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
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- 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
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- 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
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
-
- 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 kind of direct-type backlight diaphragm structures, including LED light plate, fluorescent powder diffusion optical compound film is provided on the LED light plate, fluorescent powder diffusion optical compound film includes optical cement, optics diffusion particle and fluorescent powder, a kind of optical diaphragm being additionally provided on fluorescent powder diffusion optical compound film in multifunctional optical film, diffusion barrier, diffusion barrier and prism film, the LED light plate spread optical compound film by the fluorescent powder with the optical diaphragm and cohere.The present invention can effectively reduce the thickness of direct-type backlight diaphragm structure, reduce the usage amount of PET, reduce cost of manufacture, and improve light efficiency.
Description
Technical field
The present invention relates to display backlight fields, and in particular to a kind of direct-type backlight diaphragm structure.
Background technology
With the continuous development of science and technology, contact of the people with electronic equipment is more and more frequent, and the requirement to display screen is not yet
Disconnected becomes higher, and at present on the market mainly using LCD display, the operation principle of liquid crystal panel is in the parallel glass base of two panels
Place liquid crystal molecule among plate, there are many tiny electric wire vertically and horizontally among two panels glass substrate, whether by being powered come
Liquid crystal molecule is controlled to change direction, the light of backlight module is reflected into generation picture.Since liquid crystal panel is not sent out in itself
Light is, it is necessary to which the light source provided by backlight module normally shows image, and therefore, backlight module becomes liquid crystal display device
One of key component.
The light mode that enters of LCD backlight is divided into two kinds：Side entering type and straight-down negative.Current straight-down negative comparison side entering type
Backlight design can save LGP (light guide plate) cost, and with huge cost advantage, and downward back photo structure possesses
The advantages of high image quality, high professional qualification effect.However, the shortcomings that straight-down negative appearance is thicker but significantly reduces connecing for consumer
It is spent.Straight-down negative structure is needed using multiple optical diaphragms, is one of the reason for causing its thickness larger, and larger thickness
Degree also results in the increase of PET usage amounts, and then light efficiency is caused to decline, and also makes the cost of LCD display increase.Fig. 1 and figure
2 be general direct-type backlight structure diagram.
As shown in Figures 1 and 2, it is direct-type backlight optical texture of the prior art, mixed fluorescent powder and optical cement
(OCA or OCR), is coated on LED light plate, and diffusion barrier is provided on LED light plate, two panels prism is set on diffusion barrier
Film, be provided with brightness enhancement film or diffusion barrier again on prism film or on LED light plate on be coated with fluorescent powder and optical cement (OCA
Or OCR), diffusion barrier, one layer of prism film and multifunction optical film are set gradually on.Therefore the straight-down negative of traditional design
Backing structure thickness is larger, and since the diaphragm number of plies of stacking is more, not only increases the cost of manufacture of backing structure, together
When but also light efficiency decline, it is also larger to the demand of PET.
The content of the invention
In view of the above problems, it is an object of the invention to provide a kind of direct-type backlight diaphragm structure, including by
The LED light plate of several LED light sources and circuit board (FPC or PCBA) composition, the LED light plate are spread equipped with layer of fluorescent powder
Optical compound film, the fluorescent powder diffusion optical compound film include optical cement, optics diffusion particle and fluorescent powder, the fluorescence
Optical diaphragm is additionally provided on powder diffusion optical compound film.
As preferred scheme, the circuit board is FPC or PCBA, and different circuits can be selected according to different demands
Plate, flexible PCB or printed circuit board (PCB).
As preferred scheme, the optical cement is OCR or OCA, similarly, selects different optics in varied situations
Glue, it is however generally that, OCA mostly should be in the reduced sizes touch panel such as smart mobile phone, and OCR is then applied to tablet computer etc. more
Large-size product.
As preferred scheme, the optical diaphragm is one kind in multifunctional optical film, diffusion barrier or prism film, and
The prism sawtooth of the prism film spreads optical compound film towards external away from the fluorescent powder.
As preferred scheme, the concentration of the optics diffusion particle for it is described integrate spread the 10% of optical cement to
60%, the additive amount of diffusion particle can be changed according to the fogging degree of required product.
As preferred scheme, the LED light plate spreads optical compound film with the optical diaphragm by the fluorescent powder
It coheres.
In conventional downward back photo structure, two panels diffusion barrier is generally required, is divided into diffusion barrier and lower diffusion barrier, expanded
The main function for dissipating film is to promote light luminance, and the soft dispersion of light that light guide plate is received, and one is provided uniformly for display
Area source, play the role of widening visual angle, wherein lower diffusion barrier mainly penetrates light derived from light guide plate or directly-down light source
The point light or linear light gone out diffuses up into uniform area source, and brightness enhancement film is mainly protected in the effect of upper diffusion barrier, while will be increased
The light of bright film aggregation is diffused again, improves the uniformity of light.However by lower diffusion barrier be stacked in fluorescent powder and optical cement it
On, the thickness of backing structure entirety is added, so as to influence the light transmission of backing structure entirety, while is also increased entire
The cost of structure.Diffusion barrier is mainly made of light diffusion layer and diffusion particle, by the effect of diffusion particle, so as to reflect, instead
Light is penetrated, achievees the purpose that diffusing light.
In order to reduce the thickness of product, while increase light transmission, reduce cost, the present invention by optics by spreading grain
Son, optical cement and fluorescent powder are integrated, and can equally be spread the light that LED light plate projects, and then be eliminated general downward back
Lower diffusion barrier in photo structure continues up to stack the i.e. completion assembling of the optical diaphragms such as prism film or brightness enhancement film.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention is by the integration to optical cement (OCR or OCA) and optics diffusion particle and fluorescent powder, instead of conventional straight
The diffusion barrier used in type backlight optical texture, reduces the thickness of straight-down negative optics backlight framework, and simplifies entirety
Structure, simultaneously also by the quantity for reducing optical diaphragm in traditional direct-type backlight optical diaphragm, reduce the use of PET
Amount, and then the cost manufactured has been saved, also improve the light efficiency of product itself.
Description of the drawings
Attached drawing described herein is used for providing further understanding of the present application, forms the part of the application, this Shen
Schematic description and description please does not form the improper restriction to the application for explaining the application.In the accompanying drawings：
Fig. 1, Fig. 2 are general direct-type backlight structure diagrams.
Fig. 3, Fig. 4 are the embodiment of the present invention 1, the structure diagram of embodiment 2.
Fig. 5 is the structure diagram of the embodiment of the present invention 3.
In figure, 1, LED chip, 2, optical cement, 3, fluorescent powder, 4, circuit board, 5, diffusion barrier, 6, prism film, 7, multi-functional
Optical diaphragm, 8, optics diffusion particle, 9, fluorescent powder diaphragm.
Specific embodiment
The principles and features of the present invention are described below, and the given examples are served only to explain the present invention, is not intended to limit
Determine the scope of the present invention.
Embodiment 1：As shown in Figure 3, Figure 4, several embodiments of the invention, bottom of the present invention are provided with circuit board, circuit
Plate can be FPC or PCBA, can be provided with several LED on circuit board according to different using the circuit board used is changed
Chip forms LED light plate as light source, LED chip with circuit board composition, and layer of fluorescent powder is equipped on LED light plate and spreads light
Composite membrane is learned, fluorescent powder diffusion optical compound film includes optical cement (OCR or OCA), optics diffusion particle and fluorescent powder,
The quality accounting of optics diffusion particle 8 is 10%~60%, can change proportioning according to the difference of required product, fluorescent powder expands
It dissipates and is provided with brightness enhancement film or diffusion barrier on optical compound film, it should be noted that the LED light plate and the brightness enhancement film/diffusion barrier
Optical compound film is spread by the fluorescent powder to cohere.Diffusion barrier 5 can correct light into uniform area light source to reach optics diffusion
Effect, the major function of brightness enhancement film 9 is the entire back light system luminous efficiency of improvement.
Embodiment 3：As shown in figure 5, another embodiment similar to Example 1, of the invention, difference are to implement
In example 1, the top of downward back photo structure is brightness enhancement film 10 or diffusion barrier 5, and embodiment 2 uses multifunction optical film 7,
Using prism film in embodiment 3, and the prism sawtooth of the prism film spreads optical compound film towards external away from the fluorescent powder.Root
According to different demands, multifunction optical film 7 can improve the brightness of back light system, maintain to send the good quality of light, and rib
Mirror film main function is to improve the front face brightness of display screen.
When actually preparing the present invention, LED light plate is first assembled according to demand, afterwards in required ratio hybrid optical glue 2, light
Diffusion particle 8 and fluorescent powder 3 are learned, by printing, spraying or the modes fixed fluorescent powder such as membrane pressure spreads optical compound film, is treated glimmering
After light powder diffusion optical compound film cures, the optical diaphragm needed for stacking is continued up.
The present invention is by integrating optical cement 2, fluorescent powder 3 and optics diffusion particle 8, so as to substitute traditional direct-type backlight knot
The diffusion barrier 5 of structure can add other optical diaphragms according to required backlight performance, not influence backing structure transmitance
In the case of, reduce the quantity of optical diaphragm, and optical diaphragm is incorporated, simplify whole structure.
Several preferred embodiments of invention have shown and described in above description, but it has been observed that it should be understood that the present invention is not
Form disclosed herein is confined to, is not to be taken as the exclusion to other embodiment, and can be used for various other combinations, repair
Change and environment, and can in the scope of the invention is set forth herein, by the technology or knowledge of above-mentioned introduction or association area into
Row change.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be in the present invention
In the protection domain of appended claims.
Claims (6)
1. a kind of direct-type backlight diaphragm structure, including, the LED light plate, including circuit board with it is at least one be arranged at it is described
LED chip on circuit board, which is characterized in that fluorescent powder diffusion optical compound film is provided on the LED light plate, it is described
Fluorescent powder diffusion optical compound film includes optical cement, optics diffusion particle and fluorescent powder, and the fluorescent powder diffusion optics is compound
Optical diaphragm is additionally provided on film.
2. direct-type backlight diaphragm structure according to claim 1, which is characterized in that the circuit board is FPC or PCBA.
3. direct-type backlight diaphragm structure according to claim 1, which is characterized in that the optical cement is OCR or OCA.
4. direct-type backlight diaphragm structure according to claim 1, which is characterized in that the optical diaphragm is multifunctional light
Learn one kind in film, diffusion barrier or prism film.
5. direct-type backlight diaphragm structure according to claim 1, which is characterized in that in terms of quality proportioning, the optics
Diffusion particle spreads the 10% to 60% of optical compound film for the integration fluorescent powder.
6. direct-type backlight diaphragm structure according to claim 1, which is characterized in that the LED light plate and the optics
Diaphragm spreads optical compound film by the fluorescent powder and coheres.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711484540.1A CN108089376A (en) | 2017-12-29 | 2017-12-29 | A kind of direct-type backlight diaphragm structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711484540.1A CN108089376A (en) | 2017-12-29 | 2017-12-29 | A kind of direct-type backlight diaphragm structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108089376A true CN108089376A (en) | 2018-05-29 |
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ID=62181315
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711484540.1A Pending CN108089376A (en) | 2017-12-29 | 2017-12-29 | A kind of direct-type backlight diaphragm structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN108089376A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188774A (en) * | 2018-10-31 | 2019-01-11 | 厦门天马微电子有限公司 | A kind of backlight module and preparation method thereof, display module |
| CN109459887A (en) * | 2018-11-06 | 2019-03-12 | 惠州市华星光电技术有限公司 | The production method and light source assembly of light source assembly |
| CN110824770A (en) * | 2019-11-07 | 2020-02-21 | 宁波视睿迪光电有限公司 | Backlight module |
| CN111095088A (en) * | 2018-10-19 | 2020-05-01 | 深圳市珏琥显示技术有限公司 | Backlight module and display device |
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| CN101630093A (en) * | 2008-07-15 | 2010-01-20 | 嘉威光电股份有限公司 | Optical diaphragm and backlight module using same |
| CN201621532U (en) * | 2010-02-10 | 2010-11-03 | 深圳帝光电子有限公司 | Directly-down type ultrathin LED back light module unit |
| CN104793275A (en) * | 2015-04-29 | 2015-07-22 | 宁波江北激智新材料有限公司 | Chromaticity coordinate and color gamut range adjustable fluorescent film |
| CN107092129A (en) * | 2016-09-30 | 2017-08-25 | 深圳市玲涛光电科技有限公司 | Light source assembly, display device and electronic equipment |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101630093A (en) * | 2008-07-15 | 2010-01-20 | 嘉威光电股份有限公司 | Optical diaphragm and backlight module using same |
| CN101359066A (en) * | 2008-09-12 | 2009-02-04 | 上海广电光电子有限公司 | Microstructure multifunction optical film diaphragm |
| CN201621532U (en) * | 2010-02-10 | 2010-11-03 | 深圳帝光电子有限公司 | Directly-down type ultrathin LED back light module unit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111095088A (en) * | 2018-10-19 | 2020-05-01 | 深圳市珏琥显示技术有限公司 | Backlight module and display device |
| CN109188774A (en) * | 2018-10-31 | 2019-01-11 | 厦门天马微电子有限公司 | A kind of backlight module and preparation method thereof, display module |
| CN109459887A (en) * | 2018-11-06 | 2019-03-12 | 惠州市华星光电技术有限公司 | The production method and light source assembly of light source assembly |
| CN109459887B (en) * | 2018-11-06 | 2021-11-02 | 惠州市华星光电技术有限公司 | Method for manufacturing light source component and light source component |
| CN110824770A (en) * | 2019-11-07 | 2020-02-21 | 宁波视睿迪光电有限公司 | Backlight module |
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Effective date of registration: 20190306 Address after: 518000 Jinke Industrial Park, 310 Fifth Avenue, Luhu Community, Guanhu Street, Longhua District, Shenzhen City, Guangdong Province, 704 Applicant after: Shenzhen Amber Display Technology Co., Ltd. Address before: 315 600 No. 111 Donghai Road, Yuelong Street, Ninghai County, Ningbo City, Zhejiang Province Applicant before: Ningbo Donghui Photoelectric Technology Co., Ltd. |
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Application publication date: 20180529 |