CN107101176A - Liquid crystal display device, sidelight type backlight module and its light source - Google Patents
Liquid crystal display device, sidelight type backlight module and its light source Download PDFInfo
- Publication number
- CN107101176A CN107101176A CN201710257882.3A CN201710257882A CN107101176A CN 107101176 A CN107101176 A CN 107101176A CN 201710257882 A CN201710257882 A CN 201710257882A CN 107101176 A CN107101176 A CN 107101176A
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- China
- Prior art keywords
- light
- backlight module
- type backlight
- support
- light source
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
-
- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2101/00—Point-like light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Abstract
The invention discloses a kind of liquid crystal display device, sidelight type backlight module and its light source.The light source of sidelight type backlight module includes：Multiple luminescence components and flexible PCB, each luminescence component includes support, the illuminating part being arranged in the support, the pad for being arranged at the rack outer surface, wherein, the pad and the flexible circuit plate weld, the outer surface of the support is provided with light shield layer, and the light-emitting area described in the outer surface of the support where illuminating part is not provided with the light shield layer.In the outer surface of the luminescence component support of the light source of sidelight type backlight module, light shield layer is set, and the light-emitting area in the outer surface of support where illuminating part is not provided with light shield layer, solve the bracket edge leakage problem when illuminating part is lighted, and light shield layer can absorb the light for reflexing to illuminating part surface, and then solve because of the light that luminescence component side light leakage or support reflect, cause the problem of glue frame light leak or FPC leak gold-tinted before lamp.
Description
Technical field
The present invention relates to back light model setting technology field, more particularly, to a kind of liquid crystal display device, side-light backlight mould
Group and its light source.
Background technology
Backlight module is one of key component of liquid crystal display device, and function is well-off brightness with being evenly distributed
Light source so that liquid crystal panel can normally show image.Backlight module is general by light source, light guide plate, optical diaphragm group, side
Frame etc. is constituted.Current light source mainly has tri- kinds of type of backlight of EL CCFL and LED, wherein, EL light sources are due to inefficient, low bright
Degree and short-life shortcoming, make it not be suitable for transmission-type back lighting purposes as large LCD；CCFL, which is provided, to be used for
Brightness and life-span needed for large LCD, but as more efficient, design is largely occurred using more flexible LED, CCFL use
Fewer and fewer, the liquid crystal display device using fluorescent tube as light source was just progressively taken by LED liquid crystal display devices originally
Generation.Different according to distribution of light sources position, backlight module is divided into side-light type and straight-down negative (bottom backlight type), with backlight module constantly to
Brighter, lighter, thinner direction is developed, and sidelight type backlight module uses relatively many.To sum up, using sidelights of the LED as light source
Formula backlight module turns into the main flow that backlight module develops.
In LED sidelight type backlight modules, LED particle is generally installed in support, then by each installation LED particle
Support forms LED light bar by pad solder on flexible print circuit (FPC), and LED light bar is arranged on into light guide plate sidepiece, led
Tabula rasa front sets optical diaphragm group, for the backlight module designed without chase, uses white glue frame for frame.
For the backlight module of said structure, as shown in figure 1, because LED particle 11 is arranged in support 12, LED particle
11 light after the light that produces can be spilt from the support 12 of surrounding, cause bracket edge light leak, and reflected by light guide plate
Light will on support another secondary reflection.Glue frame light leak schematic diagram is illustrated in figure 2, due to the light leak and edge reflections of support
Effect so that the glue frame before lamp can also produce a certain degree of light leak, be illustrated in figure 3 the touch controlled key light leak with touch-control product
Schematic diagram, after LED particle 11 is lighted, light produces glue frame light leak through glue frame 13, and band touch-control product correspondence position is provided with leaded light
Film 14, then may because of glue frame light leak and caused by touch controlled key light leak.
In addition, FPC materials are usually PI, and due to thinner thickness, as shown in figure 4, glue frame 13 is not kept off on rear side of FPC15
Wall construction, after LED particle 11 is lighted, when light is spilt above support, light can pass through FPC15, produce FPC leakages yellow
Light.
Therefore it provides a kind of light source of lighttight sidelight type backlight module, sidelight type backlight module and liquid crystal display dress
Put, be this area urgent problem to be solved.
The content of the invention
In view of this, the invention provides a kind of liquid crystal display device, sidelight type backlight module and its light source, solve
State technical problem.
The present invention provides a kind of light source of sidelight type backlight module, including：Multiple luminescence components and flexible PCB, each
The luminescence component includes support, the illuminating part being arranged in the support, the pad for being arranged at the rack outer surface, its
In, the pad and the flexible circuit plate weld, the outer surface of the support is provided with light shield layer, and the appearance of the support
Light-emitting area described in face where illuminating part is not provided with the light shield layer.
Further, the light shield layer coats to be formed by blacking.
Further, the blacking includes conductive material.
Further, the blacking includes Heat Conduction Material.
Further, the thickness of the light shield layer is between 5 microns to 20 microns.
Further, the relative side surface of light-emitting area described in the outer surface of the support is not provided with the light shield layer.
Further, after the illuminating part is arranged in the support, lighted described downwards, by the branch
Shower nozzle is set to be sprayed to the support and form the light shield layer above frame.
Further, after the light shield layer is coated by blacking, carry out hydrophobic treatment and formed.
In order to solve the above-mentioned technical problem, the present invention provides a kind of sidelight type backlight module, it is characterised in that including light
Source, light guide plate and optical diaphragm group, the light source are arranged at the sidepiece of the light guide plate, and the light source is carried on the back for above-mentioned side-light type
The light source of optical mode group.
The present invention also provides a kind of liquid crystal display device, it is characterised in that including sidelight type backlight module and being arranged at institute
The liquid crystal display panel in sidelight type backlight module is stated, wherein, the sidelight type backlight module is above-mentioned sidelight type backlight module.
Compared with prior art, the present invention is provided liquid crystal display device, sidelight type backlight module and its light source, are realized
Following beneficial effect：
(1) outer surface of luminescence component support sets light shield layer in the light source of sidelight type backlight module, and support is outer
Light-emitting area in surface where illuminating part is not provided with light shield layer, solves the bracket edge leakage problem when illuminating part is lighted, and
And light shield layer can absorb the light for reflexing to illuminating part surface, and then solve because of luminescence component side light leakage or support reflection
Light, causes the problem of glue frame light leak or FPC leak gold-tinted before lamp.Also, light shield layer is arranged on rack surface will not be because of extinction shadow
The luminosity of light source is rung, while the illumination effect that light-emitting area does not interfere with light source is avoided in the position of light shield layer.
(2) light shield layer coats to be formed by blacking, with strong photo absorption performance.Blacking includes conductive material
Luminescence component release electrostatic can effectively be helped.Blacking, which includes Heat Conduction Material, contributes to luminescence component to radiate, and improves
The reliabilities of properties of product.
(3) set the thickness of light shield layer between 5 microns to 20 microns, backlight mould is ensure that while meeting shading performance
The slim requirement of group.
(4) after light shield layer is coated by blacking, carry out hydrophobic treatment and formed.Do after hydrophobic treatment, light shield layer and branch
It is firm that frame is bonded, difficult for drop-off, it is ensured that shading performance is stable.
Certainly, implement the present invention any product must not specific needs simultaneously reach all the above technique effect.
By referring to the drawings to the detailed description of the exemplary embodiment of the present invention, further feature of the invention and its
Advantage will be made apparent from.
Brief description of the drawings
The accompanying drawing for being combined in the description and constituting a part for specification shows embodiments of the invention, and even
It is used for the principle for explaining the present invention together with its explanation.
Fig. 1 is prior art backlight module medium-height trestle light leak schematic diagram；
Fig. 2 is glue frame light leak schematic diagram in prior art backlight module；
Fig. 3 is touch controlled key light leak schematic diagram in prior art backlight module；
Fig. 4 is FPC leakage gold-tinted schematic diagrames in prior art backlight module；
Fig. 5 is the light source schematic diagram of sidelight type backlight module provided in an embodiment of the present invention；
Fig. 6 is the luminescence component schematic diagram of the light source of sidelight type backlight module provided in an embodiment of the present invention；
Fig. 7 is the setting above support in the luminescence component of the light source of sidelight type backlight module provided in an embodiment of the present invention
The schematic top plan view that shower nozzle is sprayed to support；
Fig. 8 is the setting above support in the luminescence component of the light source of sidelight type backlight module provided in an embodiment of the present invention
The schematic side view that shower nozzle is sprayed to support；
Fig. 9 is sidelight type backlight module schematic diagram provided in an embodiment of the present invention.
Embodiment
The various exemplary embodiments of the present invention are described in detail now with reference to accompanying drawing.It should be noted that：Unless had in addition
Body illustrates that the part and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments does not limit this
The scope of invention.
The description only actually at least one exemplary embodiment is illustrative below, never as to the present invention
And its any limitation applied or used.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as a part for specification.
In shown here and discussion all examples, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent accompanying drawing in individual accompanying drawing.
The present embodiment provides a kind of light source of sidelight type backlight module, and reference picture 5 and Fig. 6, Fig. 5 carry for the embodiment of the present invention
The light source schematic diagram of the sidelight type backlight module of confession, Fig. 6 is the light source of sidelight type backlight module provided in an embodiment of the present invention
Luminescence component schematic diagram.
The present embodiment provides a kind of light source 500 of sidelight type backlight module, including：Multiple luminescence components 501 and flexible electrical
Road plate 502, each luminescence component 501 includes support 5011, the illuminating part 5012 being arranged in support 5011, is arranged at support
The pad 5013 of 5011 outer surfaces, wherein, pad 5013 is welded with flexible PCB 502, and the outer surface of support is provided with shading
Light-emitting area in layer 5014, and the outer surface of support where illuminating part 5012 is not provided with light shield layer.Especially for white support
Luminescence component, white support outer surface set light shield layer 5014.
In the outer surface of the luminescence component support of the light source of sidelight type backlight module, light shield layer, and the outer surface of support are set
Light-emitting area where middle illuminating part is not provided with light shield layer, solves the bracket edge leakage problem when illuminating part is lighted, and hide
Photosphere can absorb the light for reflexing to illuminating part surface, and then solve the light because of luminescence component side light leakage or support reflection
Line, causes the problem of glue frame light leak or FPC leak gold-tinted before lamp.Also, light shield layer be arranged on rack surface will not because of extinction shadow
The luminosity of light source is rung, while the illumination effect that light-emitting area does not interfere with light source is avoided in the position of light shield layer.
Further, in some optional embodiments, in the luminescence component support of the light source of sidelight type backlight module
Outer surface set light shield layer coat to be formed by blacking.Light shield layer coats to be formed by blacking, with strong
Photo absorption performance.Light shield layer is black dyes, the composition of adhesive and other additives with blacking.Wherein black dyes can
Think metal oxide such as iron oxide black, or metal sulfide such as bismuth sulfide, or carbon black or titanium are black, can also
For black organic dyestuff such as nigrosine etc..These black dyes can be used alone or be used in mixed way.In order to ensure that black contaminates
Expect to can be set in the effect of fitting with the outer surface of support, blacking and have adhesive, adhesive can be epoxy resin, poly- ammonia
The organic bonds such as ester, polyacrylate, polystyrene.The additive of other in blacking can be solvent, curing agent, antioxygen
Agent or other functional additives.
Further, in some optional embodiments, the outer surface of support is formed wraps in the blacking of light shield layer
Include conductive material.Wherein conductive material can be conductive metal material (such as copper, aluminium) or composite polymer conductive material.Formed
The blacking of light shield layer includes conductive material, while shading is realized, can effectively help luminescence component release quiet
Electricity, and extra electrostatic treatment devices need not be increased so that the light-source structure of sidelight type backlight module is simple；In handling process
On, the function of shading and antistatic is that can be achieved by one-time process, and technological process is simple.
Further, in some optional embodiments, the outer surface of support is formed wraps in the blacking of light shield layer
Include Heat Conduction Material.Forming the blacking of light shield layer includes Heat Conduction Material, while shading is realized, contributes to luminescence component
Radiating, improves the reliability of properties of product, and need not increase extra heat dissipation processing device so that sidelight type backlight module
Light-source structure it is simple；In handling process, shading and the function of radiating are that can be achieved by one-time process, technological process letter
It is single.
Further, in some optional embodiments, the thickness of the light shield layer of the outer surface setting of support is at 5 microns
To between 20 microns.The excessively thin influence of thickness of light shield layer is to the effect of rack outer surface shading, and the thickness of light shield layer is blocked up can shadow
The integral thickness of luminescence component is rung, so the thickness for setting light shield layer meets the same of shading performance between 5 microns to 20 microns
When ensure that the slim requirement of backlight module.
Further, in some optional embodiments, the light of the sidelight type backlight module described in the embodiment of the present invention
Source, when setting light shield layer in the outer surface of luminescence component support, carries out subregion setting, is specially to be sent out in the outer surface of support
Light-emitting area where a light part side surface relative with light-emitting area is not provided with light shield layer.Because glue frame light leak is few after lamp, in support
Outer surface in the relative side surface of light-emitting area be not provided with light shield layer, minimum influence light source overall performance, but can reduce
The use of shading layer material, reduces production cost.
In order to further save material cost, set pad relative in some optional embodiment medium-height trestle outer surfaces
Position simultaneously is not provided with light shield layer.
It should be noted that as shown in figure 3, due to glue frame light leak meeting in the backlight module of the product with touch controlled key
Touch controlled key light leak is caused, so light-emitting area is relative in the outer surface of support in the backlight module light source of such a product one
Side surface needs to set light shield layer to avoid touch controlled key light leak.
Further, in a kind of optional embodiment, the sidelight type backlight module that the embodiment of the present invention is provided
Light source, after illuminating part is arranged in support, will light downwards, by setting shower nozzle to spray support above support
And form light shield layer.
Specifically, by taking a kind of LED luminescence components manufacturing process as an example, LED luminescence component manufacturing process includes：
(1) step, support molding is molded；
(2) step, assembles LED chip, LED chip is attached on double faced adhesive tape, luminous to be arranged at up in support；
(3) step, carries out bonding wire to LED chip, is connected the electrodes to aluminium wire or spun gold welding machine in LED chip, makes note
Enter the lead of electric current.
(4) step, injects phosphor powder layer, improves color blue shift, improves brightness, then by using resin-encapsulated by LED core
Piece and bonding wire are protected.
It is preferred that, step (2) after the completion of to support spray light shield layer.
Specifically, LED is luminous face-down, set shower nozzle to be sprayed with blacking to support surrounding above support
And form light shield layer.Wherein, shower nozzle 704 is set to be sprayed and formed to support with blacking 705 in the top of support 7011
The schematic diagram reference picture 7 and Fig. 8 of light shield layer.Fig. 7 is that the schematic top plan view that shower nozzle is sprayed to support is set above support,
Fig. 8 is that the schematic side view that shower nozzle is sprayed to support is set above support.
Further, in some optional embodiments, the sidelight type backlight module that the embodiment of the present invention is provided
Light source, after the light shield layer of the rack surface setting of luminescence component is coated by blacking, carries out hydrophobic treatment and is formed.Do thin
After water process, it is firm that light shield layer is bonded with support, difficult for drop-off, it is ensured that shading performance is stable.
The embodiment of the present invention also provides a kind of sidelight type backlight module, as shown in figure 9, including light source 911, light guide plate 912
With optical diaphragm group 913, light source 911 is arranged at the sidepiece of light guide plate 912, and light source is any one of above-described embodiment
The light source of sidelight type backlight module.Sidelight type backlight module provided in an embodiment of the present invention, in the luminescence component support of light source
Outer surface sets light shield layer, prevents support light leak and reflective, so as to solve the problems, such as that component light leak causes glue frame or FPC to leak gold-tinted.
Also, light shield layer, which is arranged on rack surface, to influence the luminosity of light source because of extinction, while hair is avoided in the position of light shield layer
Smooth surface does not interfere with the illumination effect of light source.
Further, the embodiment of the present invention also provides a kind of liquid crystal display device, including sidelight type backlight module and setting
In the liquid crystal display panel in sidelight type backlight module, wherein, sidelight type backlight module is the side-light type described in above-described embodiment
Backlight module.
By above-described embodiment, light source, sidelight type backlight module and the liquid crystal of sidelight type backlight module of the invention
Display device, has reached following beneficial effect：
(1) outer surface of luminescence component support sets light shield layer in the light source of sidelight type backlight module, and support is outer
Light-emitting area in surface where illuminating part is not provided with light shield layer, solves the bracket edge leakage problem when illuminating part is lighted, and
And light shield layer can absorb the light for reflexing to illuminating part surface, and then solve because of luminescence component side light leakage or support reflection
Light, causes the problem of glue frame light leak or FPC leak gold-tinted before lamp.Also, light shield layer is arranged on rack surface will not be because of extinction shadow
The luminosity of light source is rung, while the illumination effect that light-emitting area does not interfere with light source is avoided in the position of light shield layer.
(2) light shield layer coats to be formed by blacking, with strong photo absorption performance.Blacking includes conductive material
Luminescence component release electrostatic can effectively be helped.Blacking, which includes Heat Conduction Material, contributes to luminescence component to radiate, and improves
The reliabilities of properties of product.
(3) set the thickness of light shield layer between 5 microns to 20 microns, backlight mould is ensure that while meeting shading performance
The slim requirement of group.
(4) after light shield layer is coated by blacking, carry out hydrophobic treatment and formed.Do after hydrophobic treatment, light shield layer and branch
It is firm that frame is bonded, difficult for drop-off, it is ensured that shading performance is stable.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, device or computer program
Product.Therefore, the present invention can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the present invention can be used in one or more computers for wherein including computer usable program code
The computer program production that usable storage medium is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
Although some specific embodiments of the present invention are described in detail by example, the skill of this area
Art personnel are it should be understood that example above is merely to illustrate, the scope being not intended to be limiting of the invention.The skill of this area
Art personnel to above example it should be understood that can modify without departing from the scope and spirit of the present invention.This hair
Bright scope is defined by the following claims.
Claims (10)
1. a kind of light source of sidelight type backlight module, it is characterised in that including：Multiple luminescence components and flexible PCB, each
The luminescence component includes support, the illuminating part being arranged in the support, the pad for being arranged at the rack outer surface, its
In, the pad and the flexible circuit plate weld, the outer surface of the support is provided with light shield layer, and the appearance of the support
Light-emitting area described in face where illuminating part is not provided with the light shield layer.
2. the light source of sidelight type backlight module according to claim 1, it is characterised in that the light shield layer is applied by black
Material coating is formed.
3. the light source of sidelight type backlight module according to claim 2, it is characterised in that the blacking includes leading
Electric material.
4. the light source of the sidelight type backlight module according to Claims 2 or 3, it is characterised in that wrapped in the blacking
Include Heat Conduction Material.
5. the light source of sidelight type backlight module according to claim 2, it is characterised in that the thickness of the light shield layer is 5
Micron is between 20 microns.
6. the light source of sidelight type backlight module according to claim 2, it is characterised in that institute in the outer surface of the support
State the relative side surface of light-emitting area and be not provided with the light shield layer.
7. the light source of sidelight type backlight module according to claim 2, it is characterised in that be arranged at institute in the illuminating part
After stating in support, lighted described downwards, set shower nozzle to spray and shape the support by side on the bracket
Into the light shield layer.
8. the light source for the sidelight type backlight module stated according to claim 2, it is characterised in that the light shield layer passes through blacking
After coating, carry out hydrophobic treatment and formed.
9. a kind of sidelight type backlight module, it is characterised in that including light source, light guide plate and optical diaphragm group, the light source is set
In the sidepiece of the light guide plate, and the light source is the light of the sidelight type backlight module any one of claim 1 to 8
Source.
10. a kind of liquid crystal display device, it is characterised in that including sidelight type backlight module and be arranged at the side-light backlight mould
Liquid crystal display panel in group, wherein, the sidelight type backlight module is the sidelight type backlight module described in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710257882.3A CN107101176A (en) | 2017-04-19 | 2017-04-19 | Liquid crystal display device, sidelight type backlight module and its light source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710257882.3A CN107101176A (en) | 2017-04-19 | 2017-04-19 | Liquid crystal display device, sidelight type backlight module and its light source |
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| CN107101176A true CN107101176A (en) | 2017-08-29 |
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| CN201710257882.3A Pending CN107101176A (en) | 2017-04-19 | 2017-04-19 | Liquid crystal display device, sidelight type backlight module and its light source |
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| US11388846B2 (en) | 2018-06-21 | 2022-07-12 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Heat dissipation film, display device and manufacturing method thereof |
| CN114384723A (en) * | 2020-10-20 | 2022-04-22 | 京东方科技集团股份有限公司 | Front light source, manufacturing method thereof and display device |
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