CN108227299A - A kind of downward back photo structure - Google Patents
A kind of downward back photo structure Download PDFInfo
- Publication number
- CN108227299A CN108227299A CN201711481292.5A CN201711481292A CN108227299A CN 108227299 A CN108227299 A CN 108227299A CN 201711481292 A CN201711481292 A CN 201711481292A CN 108227299 A CN108227299 A CN 108227299A
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- China
- Prior art keywords
- diffusion
- optical cement
- optical
- film
- downward back
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- 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.)
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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
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a kind of downward back photo structures, including LED light plate, integration diffusion optical cement is provided on the LED light plate, integration diffusion optical cement includes optical cement, optics diffusion particle and fluorescent powder, integration diffusion optical cement top is additionally provided with prism film, a kind of optical diaphragm being additionally provided on prism film in brightness enhancement film, diffusion barrier and multifunctional optical film, can change according to demand.The thickness of downward back photo structure can be effectively reduced by the present invention, PET usage amounts is reduced, reduces cost, improve the light efficiency of structure.
Description
Technical field
The present invention relates to display backlight fields, and in particular to a kind of downward back photo 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 dual brightness enhancement film or diffusion barrier again on prism film or on LED light plate on coating fluorescent powder and light
Glue (OCA or OCR) is learned, diffusion barrier, one layer of prism film and multifunction optical film are set gradually on.Therefore traditional design
Direct-type backlight structural thickness is larger, and since the diaphragm number of plies of stacking is more, not only increases being fabricated to for backing structure
This, while but also light efficiency decline, 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 downward back photo structure, including by several
The LED light plate of LED light source and circuit board (FPC or PCBA) composition, the LED light plate, which is equipped with one layer and integrates, spreads optical cement,
The diffusion optical cement of integrating includes optical cement, optics diffusion particle and fluorescent powder, and described integrate is provided on diffusion optical cement
Prism film, is additionally provided with optical diaphragm on the prism film, and the prism sawtooth of the prism film is towards the optical diaphragm.
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 quantity of the prism film is 0 to 2, and prism film is the plastic film of layer of transparent, thickness
Between 50 to 300 microns, the upper surface of film uniformly and it is neat be covered with one layer of prism structure, select different layers of
Prism film can improve the brightness of display screen to some extent.
As a preferred option, the optical diaphragm is dual brightness enhancement film (DBEF), diffusion barrier or multifunctional light
Learn one kind in diaphragm.
As a preferred option, the optics diffusion particle it is a concentration of it is described integrate the 10% of diffusion optical cement 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 prism film not stick state.It is making
During the structure of the present invention, after waiting that integrate diffusion optical cement fixes with LED light plate, it is stacked again after integrating diffusion optics adhesive curing
His optical cement.
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, fluorescent powder, the light that LED light plate projects can equally be spread, and then eliminate general direct-type backlight
Lower diffusion barrier in structure continues up to stack the optical diaphragms such as prism film, dual brightness enhancement film, multifunction optical film
Complete assembling.
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；
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, dual brightness enhancement film.
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, two embodiments of the invention, bottom of the present invention is provided with circuit board 4, circuit
Plate 4 can be FPC or PCBA, can be provided with several on circuit board 4 according to different using the circuit board 4 used is changed
LED 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 is spread
Optical cement, integration diffusion optical cement is optical cement 2 (OCR/OCA), the mixture of fluorescent powder 3 and optics diffusion particle 8, optics
The quality accounting of diffusion particle 8 is 10%~60%, can change proportioning according to the difference of required product, integrates diffusion optical cement
Top is stacked with 0-2 layers of prism film 6, there is no adhesion between integration diffusion optical cement and prism film 6, on prism film 6
Portion is additionally provided with dual brightness enhancement film 9 or diffusion barrier 5.Diffusion barrier 5 can correct light into uniform area light source to reach light
The effect of diffusion is learned, the major function of dual brightness enhancement film 9 is improves entire back light system luminous efficiency.
Embodiment 2：As shown in figure 5, another embodiment similar to Example 1, of the invention, difference is embodiment
In 1, the top of downward back photo structure is dual brightness enhancement film 9 or diffusion barrier 5, and embodiment 2 uses multifunctional optical
Diaphragm 7, according to different demands, multifunction optical film 7 can improve the brightness of back light system, maintain to send out the good matter of light
Amount.
When actually preparing the embodiment of the present invention, LED light plate is first assembled according to demand, later in required ratio mixed light
Glue 2 and optics diffusion particle 8 and fluorescent powder 3 are learned, by printing, spraying or the modes such as membrane pressure fix integration diffusion optical cement 2, it
Heating cure afterwards, then the optical diaphragms such as superposition prism film 6, dual brightness enhancement film 9 on demand, so as to obtain final products.
The present invention is by integrating optical cement 2, optics diffusion particle 8 and fluorescent powder 3, so as to substitute traditional direct-type backlight knot
The diffusion barrier 5 of structure can also add/reduce the quantity of prism film 6, in the situation for not influencing backing structure transmitance according to demand
Under, reduce the quantity of optical diaphragm, and incorporate optical diaphragm, 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 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 downward back photo structure, including LED light plate, the LED light plate includes circuit board and is set to institute at least one
State the LED chip on circuit board, which is characterized in that integration diffusion optical cement, the integration are provided on the LED light plate
Diffusion optical cement includes optical cement, optics diffusion particle and fluorescent powder, and described integrate is provided with prism film on diffusion optical cement,
It is additionally provided with optical diaphragm on the prism film, and the prism sawtooth of the prism film is towards the optical diaphragm.
2. downward back photo structure according to claim 1, which is characterized in that the circuit board is FPC or PCBA.
3. downward back photo structure according to claim 1, which is characterized in that the optical cement is OCR or OCA.
4. downward back photo structure according to claim 1, which is characterized in that the quantity of the prism film is 0 to 2.
5. downward back photo structure according to claim 1, which is characterized in that the optical diaphragm increases for reflection-type polarisation
One kind in bright film, diffusion barrier or multifunctional optical film.
6. downward back photo 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 cement for described integrate.
7. downward back photo structure according to claim 1, which is characterized in that the integration diffusion light on the LED light plate
It learns between glue and the prism film not stick state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711481292.5A CN108227299A (en) | 2017-12-29 | 2017-12-29 | A kind of downward back photo structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711481292.5A CN108227299A (en) | 2017-12-29 | 2017-12-29 | A kind of downward back photo structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108227299A true CN108227299A (en) | 2018-06-29 |
Family
ID=62647213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711481292.5A Pending CN108227299A (en) | 2017-12-29 | 2017-12-29 | A kind of downward back photo structure |
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| CN (1) | CN108227299A (en) |
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 |
| CN111679491A (en) * | 2020-05-11 | 2020-09-18 | 深圳市隆利科技股份有限公司 | Direct type backlight device |
| CN112097134A (en) * | 2019-06-18 | 2020-12-18 | 李宛儒 | Preparation method of lens-free backlight source device |
| CN113138495A (en) * | 2021-04-13 | 2021-07-20 | 武汉华星光电技术有限公司 | Backlight module and display device |
| CN113189687A (en) * | 2021-05-18 | 2021-07-30 | 合肥翰博星辰高新材料有限公司 | Diffusion film, backlight module and display device |
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| CN104570172A (en) * | 2014-12-11 | 2015-04-29 | 太湖金张科技股份有限公司 | Optical diffusion structure and backlight source device |
| 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 |
| CN205982698U (en) * | 2016-07-27 | 2017-02-22 | 京东方科技集团股份有限公司 | Dispersing element, backlight unit and display device |
| 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 (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570172A (en) * | 2014-12-11 | 2015-04-29 | 太湖金张科技股份有限公司 | Optical diffusion structure and backlight source device |
| 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 |
| CN205982698U (en) * | 2016-07-27 | 2017-02-22 | 京东方科技集团股份有限公司 | Dispersing element, backlight unit and display device |
| 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 |
Cited By (6)
| 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 |
| CN112097134A (en) * | 2019-06-18 | 2020-12-18 | 李宛儒 | Preparation method of lens-free backlight source device |
| CN111679491A (en) * | 2020-05-11 | 2020-09-18 | 深圳市隆利科技股份有限公司 | Direct type backlight device |
| CN113138495A (en) * | 2021-04-13 | 2021-07-20 | 武汉华星光电技术有限公司 | Backlight module and display device |
| CN113138495B (en) * | 2021-04-13 | 2022-05-03 | 武汉华星光电技术有限公司 | Backlight module and display device |
| CN113189687A (en) * | 2021-05-18 | 2021-07-30 | 合肥翰博星辰高新材料有限公司 | Diffusion film, backlight module and display device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| TA01 | Transfer of patent application right | ||
| 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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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180629 |