CN108153049A - A kind of direct-type backlight optical diaphragm structure - Google Patents
A kind of direct-type backlight optical diaphragm structure Download PDFInfo
- Publication number
- CN108153049A CN108153049A CN201711484582.5A CN201711484582A CN108153049A CN 108153049 A CN108153049 A CN 108153049A CN 201711484582 A CN201711484582 A CN 201711484582A CN 108153049 A CN108153049 A CN 108153049A
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- China
- Prior art keywords
- optical
- diffusion
- diaphragm
- optical cement
- fluorescent powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a kind of direct-type backlight optical diaphragm structures, including LED light plate, integration diffusion optical cement is provided on the LED light plate, integration diffusion optical cement includes optical cement and optics diffusion particle, integration diffusion optical cement top is provided with fluorescent powder diaphragm, the fluorescent powder membrane piece top is provided with prism film or multifunction optical film, and spreading optical cement by integration between the fluorescent powder diaphragm and the prism film or the multifunction optical film coheres.The present invention can effectively reduce the thickness of downward back photo structure, save PET material, improve light efficiency.
Description
Technical field
The present invention relates to display backlight fields, and in particular to a kind of direct-type backlight optical 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 increases, and at present on the market mainly using LCD display, the operation principle of liquid crystal display panel is in the parallel glass substrate of two panels
Liquid crystal molecule is placed in the middle, and two panels glass substrate centre is there are many tiny electric wire vertically and horizontally, by being controlled whether energization
Liquid crystal molecule processed changes direction, and the light of backlight module is reflected generation picture.Since liquid crystal display panel does not shine in itself, need
The light source to be provided by backlight module normally shows image, and therefore, backlight module becomes crucial group of liquid crystal display device
One of part.
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 height
The advantages of image quality, high professional qualification effect.However, the shortcomings that straight-down negative appearance is thicker but significantly reduces the acceptable of consumer
Degree.Straight-down negative structure is needed using multiple optical diaphragms, is one of the reason of causing its thickness larger, and larger thickness
The increase of PET usage amounts is caused, and then light efficiency is caused to decline, also makes the cost of LCD display increase.Fig. 1 and Fig. 2 is one
As 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 coating 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 direct-type backlight of traditional design
Structural thickness is larger, and since the diaphragm number of plies of stacking is more, not only increases the cost of manufacture of backing structure, while also make
Light efficiency is obtained to decline, it is also larger to the demand of PET.
Invention content
In view of the above problems, the purpose of the present invention is to provide a kind of direct-type backlight optical diaphragm structure, by
The LED light plate of several LED light sources and circuit board (FPC or PCBA) composition, the LED light plate, which is equipped with one layer and integrates, spreads optics
Glue, the diffusion optical cement of integrating include optical cement and optics diffusion particle, and described integrate is provided with one layer on diffusion optical cement
Fluorescent powder diaphragm, the fluorescent powder membrane on piece are provided with optical diaphragm, between the fluorescent powder diaphragm and the optical diaphragm also
It is provided with described integrate and spreads optical cement.
As a preferred option, which is characterized in that the circuit board is FPC or PCBA, can be selected according to different demands
Select different circuit boards, flexible PCB or printed circuit board.
As a preferred option, which is characterized in that the optical cement is OCR or OCA, similarly, is selected in varied situations
Select different optical cements, 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 more
The large-sizes product such as tablet computer.
As a preferred option, the optical diaphragm is one kind in prism film or multifunctional optical film, according to different
Demand can set different optical diaphragms.
As a preferred option, in terms of quality proportioning, the optics diffusion particle spreads optical cement for described integrate
10% to 60%, the additive amount of diffusion particle can be changed according to the fogging degree of required product.
As a preferred option, it is described to integrate between diffusion optical cement and the fluorescent powder diaphragm not stick state.
When making the structure of the present invention, after waiting that integrate diffusion optical cement fixes with LED light plate, folded again after integrating diffusion optics adhesive curing
Put other optical cements.
As a preferred option, the fluorescent powder diaphragm spreads optics gluing with the optical diaphragm by described integrate
It is attached.By integration spread optical cement the fluorescent powder diaphragm is sticked with the optical diaphragm, the fluorescent powder diaphragm after sticking and
Optical diaphragm is referred to as fluorescent powder optical compound film, and the present invention in the preparation, can first prepare the fluorescent powder optics in batches
Composite membrane, the optical diaphragm sticked by integration diffusion optical cement are more convenient to be further processed.
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 the effect of upper diffusion barrier mainly protects brightness enhancement film, while will increase
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 increased, so as to influence the light transmission of backing structure entirety, while also increases whole knot
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, reflect
Light achievees the purpose that diffusing light.
In order to reduce the thickness of product, while increase light transmission, reduce cost, the present invention is by by optics diffusion particle
It integrates with optical cement, the light that LED light plate projects can equally be spread, and then eliminate in general downward back photo structure
Lower diffusion barrier continues up to stack the i.e. completion assembling of the optical diaphragms such as fluorescent powder diaphragm, prism film, multifunction optical film.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention by the integration to optical cement (OCR or OCA) and optics diffusion particle and fluorescent powder, reduce it is straight under
The thickness of formula optics backlight framework, and whole structure is simplified, simultaneously also by the traditional direct-type backlight optical film of reduction
The quantity of optical diaphragm in piece, reduces the usage amount of PET, and then has saved the cost manufactured, and also improves product certainly
The light efficiency of body.
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
Illustrative embodiments and their description please do 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 structure diagrams of the embodiment of the present invention 1 and embodiment 2.
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, one embodiment of the present of invention, bottom of the present invention is provided with circuit board 4, circuit board 4
It can be FPC or PCBA, several LED can be provided on circuit board 4 according to different using the circuit board 4 used is changed
Chip 1 is used as light source, and LED chip 1 combines to form LED light plate with circuit board 4, and one layer is equipped on LED light plate and is integrated and spreads light
Glue is learned, which spreads optical cement for optical cement 2 (OCR or OCA) hybrid optical diffusion particle 8, the quality of optics diffusion particle 8
Accounting is 10%~60%, can change proportioning according to the difference of required product, and one layer is provided on integration diffusion optical cement
Fluorescent powder diaphragm 9, it should be noted that the fluorescent powder diaphragm 9 has no with the integration diffusion optical cement on LED light plate sticks work
With, which is provided with one layer of prism film 6, also be provided between fluorescent powder diaphragm 9 and the prism film 6 one layer it is whole
Close diffusion optical cement, it should be noted that integration diffusion optical cement here has sticked the prism film 6 and the fluorescent powder diaphragm 9.
Embodiment 2：As shown in figure 4, an alternative embodiment of the invention, similar to Example 1, difference is embodiment
In 1, the top of downward back photo structure is prism film 6, and the top of embodiment 2 is multifunction optical film 7, according to different
Demand, multifunction optical film 7 can improve the brightness of back light system, maintain to send out the good quality of light.Use embodiment 1
Prism film 6 can then improve the front face brightness of display screen.
When actually preparing the embodiment of the present invention, each section can be assembled apart, is cohered using diffusion optical cement is integrated
6/ multifunction optical film 7 of prism film and fluorescent powder diaphragm 9, printing/coating, which is integrated, on LED light plate spreads optical cement, treats each
Self-curing and then two parts for finishing curing stack, that is, complete the preparation of the present invention.
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 available for various other combinations, modification
And environment, and can be carried out in the scope of the invention is set forth herein by the above teachings or related fields of technology or knowledge
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 institute of the present invention
In attached scope of the claims.
Claims (7)
1. a kind of direct-type backlight optical diaphragm structure, including LED light plate, the LED light plate include circuit board with it is at least one
The LED chip being set on the circuit board, which is characterized in that integration diffusion optical cement is provided on the LED light plate, it is described
It integrates diffusion optical cement and includes optical cement and optics diffusion particle, described integrate is provided with fluorescent powder membrane on diffusion optical cement
Piece, the fluorescent powder membrane on piece are provided with optical diaphragm, are also provided between the fluorescent powder diaphragm and the optical diaphragm
State integration diffusion optical cement.
2. direct-type backlight optical diaphragm structure according to claim 1, which is characterized in that the circuit board for FPC or
PCBA。
3. direct-type backlight optical diaphragm structure according to claim 1, which is characterized in that the optical cement for OCR or
OCA。
4. direct-type backlight optical diaphragm structure according to claim 1, which is characterized in that the optical diaphragm is prism
One kind in film or multifunction optical film.
5. direct-type backlight optical diaphragm structure according to claim 1, which is characterized in that described in terms of quality proportioning
Optics diffusion particle spreads the 10% to 60% of optical cement for described integrate.
6. direct-type backlight optical diaphragm structure according to claim 1, which is characterized in that whole on the LED light plate
It closes between diffusion optical cement and the fluorescent powder diaphragm not stick state.
7. direct-type backlight optical diaphragm structure according to claim 1, which is characterized in that the fluorescent powder diaphragm and institute
Optical diaphragm is stated by the diffusion optical cement of integrating to stick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711484582.5A CN108153049A (en) | 2017-12-29 | 2017-12-29 | A kind of direct-type backlight optical diaphragm structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711484582.5A CN108153049A (en) | 2017-12-29 | 2017-12-29 | A kind of direct-type backlight optical diaphragm structure |
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| Publication Number | Publication Date |
|---|---|
| CN108153049A true CN108153049A (en) | 2018-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711484582.5A Pending CN108153049A (en) | 2017-12-29 | 2017-12-29 | A kind of direct-type backlight optical diaphragm structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109254451A (en) * | 2018-10-19 | 2019-01-22 | 住华科技股份有限公司 | Backlight module, panel using the same and manufacturing method thereof |
| WO2020077615A1 (en) * | 2018-10-19 | 2020-04-23 | 深圳市珏琥显示技术有限公司 | Backlight module and display device |
| CN113238409A (en) * | 2021-05-27 | 2021-08-10 | 业成科技（成都）有限公司 | Light source structure, 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 |
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| CN103899992A (en) * | 2007-12-07 | 2014-07-02 | 迪睿合电子材料有限公司 | Illumination apparatus, display apparatus, and method of producing an illumination |
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| KR20050065830A (en) * | 2003-12-24 | 2005-06-30 | 엘지.필립스 엘시디 주식회사 | Backlight unit |
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| CN103899992A (en) * | 2007-12-07 | 2014-07-02 | 迪睿合电子材料有限公司 | Illumination apparatus, display apparatus, and method of producing an illumination |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109254451A (en) * | 2018-10-19 | 2019-01-22 | 住华科技股份有限公司 | Backlight module, panel using the same and manufacturing method thereof |
| WO2020077615A1 (en) * | 2018-10-19 | 2020-04-23 | 深圳市珏琥显示技术有限公司 | Backlight module and display device |
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| CN113238409A (en) * | 2021-05-27 | 2021-08-10 | 业成科技（成都）有限公司 | Light source structure, backlight module and display device |
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| TA01 | Transfer of patent application right |
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: 20180612 |
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