CN108983501A - Lamp bar, backlight module and display device - Google Patents
Lamp bar, backlight module and display device Download PDFInfo
- Publication number
- CN108983501A CN108983501A CN201811187133.9A CN201811187133A CN108983501A CN 108983501 A CN108983501 A CN 108983501A CN 201811187133 A CN201811187133 A CN 201811187133A CN 108983501 A CN108983501 A CN 108983501A
- Authority
- CN
- China
- Prior art keywords
- protective layer
- circuit board
- lamp bar
- lamp
- backlight module
- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
Abstract
The present invention provides a kind of lamp bar, backlight module and display device, wherein lamp bar includes: circuit board；Multiple lamp beads are fixed on the circuit board；Protective layer, the protective layer are hyaline layer and are fixed on the circuit board that the protective layer covers multiple lamp beads.Matcoveredn is arranged due to circuit board in the application; lamp bar be can avoid because size caused by local deformation is inconsistent; and then the phenomenon that causing lamp bar to be damaged; effective quality assurance can be provided to product use; the service life of product can be improved; also can avoid in process of producing product, artificially assemble it is improper caused by it is bad.
Description
Technical field
The invention belongs to field of electronic display more particularly to a kind of lamp bars, backlight module and display device.
Background technique
Since liquid crystal itself does not shine, in the various liquid crystal displays such as liquid crystal display, LCD TV, require according to
It realizes and shows by external backlight.Backlight can be divided into straight-down negative and side entering type according to distributing position, will in side-edge type backlight
The side of light guide plate is arranged in lamp bar, heat can be generated in liquid crystal display work, in addition the influence of environment temperature, causes
Light guide plate expansion, so the lamp bead top on lamp plate is bad.
Lamp bead is damaged in order to prevent, and general way is that jacking block is arranged on lamp plate, when light guide plate expanded by heating with top
Block offsets, because the deformation quantity after each jacking block expanded by heating is different, lamp bar is still difficult to because local deformation causes size inconsistent
The phenomenon that preventing lamp bar to be damaged.
Summary of the invention
The purpose of the present invention is to provide a kind of lamp bars, it is intended to solve due to easily being pushed up lamp bar when light guide plate expanded by heating
Bad technical problem.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of backlight module, comprising:
Circuit board；
Multiple lamp beads are fixed on the circuit board；
Protective layer, the protective layer are hyaline layer and are fixed on the circuit board that the protective layer covering is multiple described
Lamp bead.
In one embodiment, the protective layer is the resin taken shape on the circuit board.
In one embodiment, further, the resin is acrylics.
In one embodiment, the protective layer is in a strip shape, and the cross section of the protective layer is in rectangle, the protective layer pair
The position of the lamp bead is answered to offer accommodation groove.
In one embodiment, the width of the protective layer is less than the width of the circuit board.
Another object of the present invention is to provide a kind of backlight modules, including；
Backboard；
Reflector plate, light guide plate and optical diaphragm are sequentially fixed on the inside of the backboard along the transmission direction of backlight；
Such as above-mentioned lamp bar, the lamp bar is fixed on the inner sidewall of the backboard and opposite with the side of the light guide plate sets
It sets, there is interval between the protective layer and the light guide plate.
In one embodiment, the backlight module further includes the center for supporting the optical diaphragm, the center installation
In on the backboard, the circuit board is fixed on the center.
In one embodiment, heat-conducting glue is provided between the circuit board and the backboard.
It is described another object of the present invention is to provide a kind of display device, including display panel and above-mentioned backlight module
Display panel is installed on the light emission side of the backlight module.
Another object of the present invention is to provide a kind of display device, including display panel and backlight module, the backlights
Mould group includes:
Backboard, including in flat bottom plate and enclosing the surrounding edge set on the base portion peripheral, the bottom plate and the surrounding edge
It is enclosed accommodating cavity, stacked above one another is provided with reflector plate, light guide plate and optical diaphragm in the accommodating cavity；
Center and lamp bar, the center are connected and fixed with the surrounding edge, and the lamp bar includes being fixed on the center
Multiple lamp beads that circuit board, spacing side by side are arranged on the circuit board and the resin protective layer being arranged on the circuit board,
The side of the circuit board and the light guide plate is oppositely arranged, and multiple lamp beads are wrapped up in the resin protective layer covering, described
There is interval between resin protective layer and the light guide plate.
Lamp bar provided by the invention can avoid lamp bar because of ruler caused by local deformation since matcoveredn is arranged in circuit board
It is very little inconsistent, and then the phenomenon that cause lamp bar to be damaged, to product using effective quality assurance can be provided, product can be improved
Service life also can avoid in process of producing product, artificially assemble it is improper caused by it is bad.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the schematic cross-sectional view of backlight module provided in an embodiment of the present invention；
Fig. 2 is the enlarged schematic partial view of backlight module shown in Fig. 1；
Fig. 3 is the side view of lamp bar provided in an embodiment of the present invention；
Fig. 4 is that the vertical view of lamp bar shown in Fig. 3 is intended to；
Fig. 5 is the enlarged schematic partial view of lamp bar shown in Fig. 3.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " length ", " width ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention
System.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
As shown in figures 1-4, lamp bar 100 provided in an embodiment of the present invention, including circuit board 110, multiple lamp beads 120 and guarantor
Sheath 130.Lamp bead 120 can be, but not limited to be LED lamp bead, and multiple lamp beads 120 are fixed on circuit board 110, for example, multiple
LED lamp bead is equidistantly laid on circuit board 110, and multiple LED lamp beads are laid side by side.Protective layer 130 is transparent material production,
Protective layer 130 is fixed on circuit board 110 and covers multiple lamp beads 120, that is to say, that 120 quilt of lamp bead on circuit board 110
Protective layer 130 wraps, and the thickness of protective layer 130 is greater than the height of lamp bead 120, and circuit board 110 is mounted on display screen and sets
When standby, lamp bead 120 is not in cause size inconsistent because locally expanding, and the protective layer 130 of setting can overcome lamp bead 120
Since man-made assembly is improper caused bad, and it can overcome the problems, such as that size is inconsistent caused by expanding because of part；Due to protecting
The problem of coating function of sheath 130, lamp bead 120 will not be damaged.
Lamp bar 100 provided in this embodiment can avoid lamp bar 100 because of office since matcoveredn 130 is arranged in circuit board 110
Size caused by portion deforms is inconsistent, and then the phenomenon that cause lamp bar 100 to be damaged, to product using can provide effective quality
Guarantee, the service life of product can be improved, also can avoid in process of producing product, artificially assemble it is improper caused by it is bad.
In one embodiment, as shown in Figures 2 to 5, protective layer 130 is the resin taken shape on circuit board 110, for item
The protective layer 130 of shape, due to the structure that protective layer 130 and lamp bead 120 are formed as one, therefore lamp bar 100 it is heated after change everywhere
Shape amount is equal, size will not be caused different because of local deformation.Resin can with but be not limited only to be acrylics
(Polymethyl Methacrylate, PMMA), PMMA is also referred to as organic glass, the high, quality with visible light transmittance
Gently, feature at low cost and easy to form, the visible light transmittance of PMMA also have good chemical stability up to 93%
And weatherability, the manufacturing cost of long service life, product entirety is low, is conducive to high-volume and processes.
In one embodiment, protective layer 130 is in a strip shape, generally cuboid, i.e., the cross section of protective layer 130 is in rectangle,
The position of the corresponding lamp bead 120 of protective layer 130 offers accommodation groove.The length of protective layer 130 is slightly larger than phase close on circuit board 110
Away from farthest the distance between two lamp beads 120, the face opposite with light guide plate 400 of protective layer 130 is plane, protective layer 130 with
The deflection of protective layer 130 everywhere is consistent when light guide plate 400 in backlight module offsets, and local deformation will not be caused different
It causes and lamp bar 100 is caused to be damaged.
In another embodiment, protective layer 130 can be divided into the structure of multiple protective cases, and corresponding each lamp bead 120 is set
Set a protective case.When 110 local deformation of circuit board, since the localised protection of protective case acts on, can be pushed up to avoid lamp bead 130
It is bad.
In one embodiment, the width of protective layer 130 is set smaller than the width of circuit board 110, the width of protective layer 130
Be arranged smaller, material cost is smaller, the protective layer 130 of setting can improve the service life of product but also make lamp bar 100 at
This control is conducive to improve the competitiveness of product in market in lower range.
As shown in Figures 1 to 4, backlight module provided in an embodiment of the present invention, including backboard 200, reflector plate 300, leaded light
The lamp bar 100 of plate 400, optical diaphragm 500 and above-described embodiment.Reflector plate 300, light guide plate 400 and optical diaphragm 500 are along back
The transmission direction of light is sequentially fixed on the inside of backboard 200, and lamp bar 100 is fixed on the inner sidewall of backboard 200, and lamp bar 100
It is oppositely arranged with the side of light guide plate 400, there is gap between the protective layer 130 in lamp bar 100 and light guide plate 400.Namely
Say when 400 non-expanded by heating of light guide plate, there is interval between protective layer 130 and light guide plate 400, it is guide-lighting when backlight module works
400 expanded by heating trailing flank of plate and the side of lamp bar 100 offset, and lamp bead 120 has the barrier of protected layer 130 in lamp bar 100
And be protected, protective layer 130 can bear the expansive force and the impact force of light guide plate 400 in the handling process of light guide plate 400,
Lamp bead 120 is not damaged, and lamp bar 100 will not cause size inconsistent because of local deformation, and then lamp bar 100 is caused to be damaged
The phenomenon that.
As shown in Figure 1, backboard 200 includes in flat bottom plate 210 and enclosing the surrounding edge 220 set on 210 periphery of bottom plate, such as
This, bottom plate 210 and surrounding edge 220 are surrounded by the accommodating cavity of a side opening, and light guide plate 400 is arranged in the accommodating cavity, light guide plate 400
Reflector plate 300 is provided between the bottom plate 210 of backboard 200, the outside of light guide plate 400 is provided with optical diaphragm 500, optical film
Piece 500 may include compound film sheet and diffusion barrier sheet.
In one embodiment, lamp bar 100 can be set multiple, be suitable for the assembling production of large scale screen.That is backlight
Mould group is provided with multiple lamp bars 100, and multiple lamp bars 100 successively splice the lamp bar 100 that simultaneously formation length adapts to light guide plate 400,
It can weld between two neighboring lamp bar 100 or fixed by connector.It is appreciated that the opposite two sides of light guide plate 400 all can cloth
Equipped with lamp bar 100, i.e., the two sides of corresponding backlight module are symmetrically arranged with the structure of lamp bar 100.
In one embodiment, backlight module further includes center 600, and light guide plate 400 is installed on center 600, and center 600 is one
Body structure, center 600 is solderable or is connected and fixed by connector and backboard 200.
In one embodiment, heat-conducting glue 140, such as heat conductive silica gel are additionally provided between circuit board 110 and backboard 200, if
Setting heat-conducting glue 140 can increase the radiating efficiency of lamp bar 100.Heat-conducting glue 140 is adhered between circuit board 110 and backboard 200, thermally conductive
The width of glue 140 be set smaller than or equal to circuit board 110 width, to save the materials of resin.In one embodiment, it leads
The width of hot glue 140 is slightly smaller than the width of circuit board 110, and the bottom surface of heat-conducting glue 140 flushes with the bottom surface of center 600 substantially, makes
Its heat dissipation is more rapid；Center 600 is additionally provided with the card slot for clamping locking optical diaphragm 500, in favor of by optical diaphragm 500
Installation fixed operation.
Display device 10 provided in an embodiment of the present invention, the backlight module including display panel 800 and above-described embodiment are shown
Show that panel 800 is installed on the light emission side of backlight module.Matcoveredn is arranged due to circuit board 110 in display device 10 of the invention
130, the phenomenon that lamp bar 100 causes lamp bar 100 to be damaged because of local deformation can be prevented, the service life of product can be improved, it can also
Avoid in process of producing product, artificially assemble it is improper caused by it is bad.
Display panel 800 can be based on liquid crystal display device 10 (Liquid Crystal Display, LCD) technology
Liquid crystal display panel, the liquid for being based on Organic Electricity laser display (Organic Light Emitting Display, OLED) technology
LCD panel is based on Thin Film Transistor-LCD (Thin Film Transistor Liquid Crystal
Display, TFT-LCD) technology liquid crystal display panel or be based on light emitting diode with quantum dots (Quantum Dot Light
Emitting Diodes, QLED) technology light emitting diode with quantum dots display panel.
As shown in Figures 1 to 4, backlight module provided in an embodiment of the present invention, including backboard 200, center 600 and lamp bar
100.Backboard 200 includes in flat bottom plate 210 and enclosing the surrounding edge 220 set on 210 periphery of bottom plate, bottom plate 210 and surrounding edge 220
It is enclosed accommodating cavity, stacked above one another is provided with reflector plate 300, light guide plate 400 and optical diaphragm 500, center in accommodating cavity
600 are connected and fixed with surrounding edge 220, i.e., 600 at least part of center is located in accommodating cavity, and the side of center 600 is fixed on surrounding edge
220 inside.Lamp bar 100 include the circuit board 110, the spacing side by side that are fixed on center 600 be arranged in it is more on circuit board 110
A resin protective layer 130 lamp bead 120 and be arranged on circuit board 110, multiple lamp beads 120 can be set in qually spaced in circuit board
On 110；Circuit board 110 and the side of light guide plate 400 are oppositely arranged, i.e. the incidence surface of 120 face light guide plate 400 of lamp bead；Resin
Multiple lamp beads 120 are wrapped up in the covering of protective layer 130, have interval between resin protective layer 130 and light guide plate 400, when work,
It contacts, resin protective layer 130 is squeezed, resin protective layer 130 is everywhere with resin protective layer 130 after 400 expanded by heating of light guide plate
The deformation quantity of generation is uniform, in this way, lamp bar 100 can be made to be not easy to be damaged.Light guide plate 400 is used to conduct from the sending of lamp bead 120
Light, the light that reflector plate 300 is used for by conduction to 400 bottom of light guide plate are reflected back in light guide plate 400 to improve the bright of light guide plate 400
Degree, optical diaphragm 500 become the more uniform area source of brightness for handling the light at 400 conduction of light guide plate.
In one embodiment, as shown in Figure 1, display device 10 includes display panel 800 and backlight module, backlight module is
Side entrance back module, backlight module include backboard 200, center 600, front frame 700, light guide plate 400, lamp bar 100 and optical film
Piece 500, panel are arranged on center 600 and back in the sides of optical diaphragm 500, and center 600 is used to support panel, and center
The position of 600 corresponding optical diaphragms 500 offers card slot, with the fixed optical diaphragm 500 of clamping；Front frame 700 be located at panel and
On backlight module, and then realize the fixation to whole display device 10.Display panel can be LCD display panel, OLED is shown
Panel, TFT-LCD display panel or QLED display panel；Metal backing, such as sheet metal component can be used in backboard 200, is produced with improving
Plastic parts can be used in the heat dissipation effect of product, center 600 and front frame 700, to mitigate product weight.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of lamp bar, it is characterised in that: include:
Circuit board；
Multiple lamp beads are fixed on the circuit board；
Protective layer, the protective layer are hyaline layer and are fixed on the circuit board that the protective layer covers multiple lamp beads.
2. lamp bar according to claim 1, it is characterised in that: the protective layer is the tree taken shape on the circuit board
Rouge.
3. lamp bar according to claim 1 or 2, it is characterised in that: the protective layer is in a strip shape, the protective layer it is transversal
Face is in rectangle, and the position that the protective layer corresponds to the lamp bead offers accommodation groove.
4. lamp bar according to claim 1 or 2, it is characterised in that: the protective layer includes multiple protective cases, the protection
Set corresponds with the lamp bead and wraps up the lamp bead wherein.
5. lamp bar according to claim 1 or 2, it is characterised in that: the width of the protective layer is less than the circuit board
Width.
6. a kind of backlight module, it is characterised in that: include:
Backboard；
Reflector plate, light guide plate and optical diaphragm are sequentially fixed on the inside of the backboard along the transmission direction of backlight；
Lamp bar as claimed in any one of claims 1 to 5, the lamp bar be fixed on the inner sidewall of the backboard and with the leaded light
The side of plate is oppositely arranged, and has interval between the protective layer and the light guide plate.
7. backlight module according to claim 6, it is characterised in that: the backlight module further includes supporting the optical film
The center of piece, the center are installed on the backboard, and the circuit board is fixed on the center.
8. backlight module according to claim 6, it is characterised in that: be provided with and lead between the circuit board and the backboard
Hot glue.
9. a kind of display device, it is characterised in that: including display panel and the described in any item backlight modules of claim 6~8,
The display panel is installed on the light emission side of the backlight module.
10. a kind of display device, including display panel and backlight module, it is characterised in that: the backlight module includes:
Backboard, including being enclosed in flat bottom plate with the surrounding edge set on the base portion peripheral, the bottom plate and the surrounding edge is enclosed
It is formed with accommodating cavity, stacked above one another is provided with reflector plate, light guide plate and optical diaphragm in the accommodating cavity；
Center and lamp bar, the center are connected and fixed with the surrounding edge, and the lamp bar includes the circuit being fixed on the center
Multiple lamp beads that plate, spacing side by side are arranged on the circuit board and the resin protective layer being arranged on the circuit board, it is described
The side of circuit board and the light guide plate is oppositely arranged, and multiple lamp beads, the resin are wrapped up in the resin protective layer covering
There is interval between protective layer and the light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811187133.9A CN108983501A (en) | 2018-10-12 | 2018-10-12 | Lamp bar, backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811187133.9A CN108983501A (en) | 2018-10-12 | 2018-10-12 | Lamp bar, backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108983501A true CN108983501A (en) | 2018-12-11 |
Family
ID=64543548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811187133.9A Pending CN108983501A (en) | 2018-10-12 | 2018-10-12 | Lamp bar, backlight module and display device |
Country Status (1)
| Country | Link |
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| CN (1) | CN108983501A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111766742A (en) * | 2020-07-14 | 2020-10-13 | 深圳创维－Rgb电子有限公司 | Backlight module and assembly jig |
| WO2021036820A1 (en) * | 2019-09-01 | 2021-03-04 | 王定锋 | Elongated flexible panel light and manufacturing method therefor |
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| CN205909083U (en) * | 2016-06-29 | 2017-01-25 | 合肥惠科金扬科技有限公司 | Edge -in backlight module and display device |
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| CN208805657U (en) * | 2018-10-12 | 2019-04-30 | 合肥惠科金扬科技有限公司 | Lamp bar, backlight module and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002261332A (en) * | 2001-03-02 | 2002-09-13 | Citizen Electronics Co Ltd | Light-emitting diode |
| CN204573715U (en) * | 2015-04-21 | 2015-08-19 | 北京京东方茶谷电子有限公司 | A kind of LED lamp bar, backlight and display unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021036820A1 (en) * | 2019-09-01 | 2021-03-04 | 王定锋 | Elongated flexible panel light and manufacturing method therefor |
| CN111766742A (en) * | 2020-07-14 | 2020-10-13 | 深圳创维－Rgb电子有限公司 | Backlight module and assembly jig |
| CN111766742B (en) * | 2020-07-14 | 2022-10-14 | 深圳创维－Rgb电子有限公司 | Backlight module and assembly jig |
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Application publication date: 20181211 |