CN206363056U - A kind of backlight for LCD TV - Google Patents
A kind of backlight for LCD TV Download PDFInfo
- Publication number
- CN206363056U CN206363056U CN201621485627.1U CN201621485627U CN206363056U CN 206363056 U CN206363056 U CN 206363056U CN 201621485627 U CN201621485627 U CN 201621485627U CN 206363056 U CN206363056 U CN 206363056U
- Authority
- CN
- China
- Prior art keywords
- led
- guide plate
- light guide
- glue frame
- backlight
- 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.)
- Expired - Fee Related
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- Liquid Crystal (AREA)
Abstract
The utility model is related to a kind of backlight for LCD TV, including light guide plate assembly, LED light bar, PMMA diffuser plates, DBEF brightening pieces, the two-sided glue frame of black and white shading, glue frame and outer chase in U-shaped, interior glue frame is placed in the inside of outer chase, on the inwall of outer chase LED clamp bar slot is provided with positioned at one end of interior glue frame, light guide plate assembly, laminating is placed in interior glue frame successively from the bottom up for PMMA diffuser plates and DBEF brightening pieces, LED light bar is placed in LED clamp bar slot, the two-sided glue frame of black and white shading is pasted onto the top of DBEF brightening pieces, LED clamp bar slot is blocked completely, LCDs is pasted onto to the top of the two-sided glue frame of black and white shading；Light guide plate assembly includes optical glass light guide plate and is pasted onto the reflective coating of light guide plate bottom, LED light bar includes aluminum-based copper-clad plate and several SMD LED lamp beads, LED lamp bead is welded on aluminum-based copper-clad plate, fit together between LED lamp bead and aluminum-based copper-clad plate using heat conductive silica gel, LED lamp bead faces the side incidence surface of optical glass light guide plate.
Description
Technical field
The utility model is related to a kind of LED backlight of liquid crystal display television, concretely relates to a kind of for ultra-thin liquid
The side entering-type LED backlight source of brilliant TV.
Background technology
With the development and progress of liquid crystal tv technology, LCD TV is towards frivolous, attractive in appearance, plug-in fashion, low energy consumption, low
The direction of radiation is developed, and LED backlight is because turning into liquid crystal electricity the features such as it has lightening, low energy consumption, long service life
Depending on the main flow of backlight.Current LED backlight enters light mode and can be divided into that straight-down negative enters light and side entering type enters light, wherein, it is straight under
Formula enters just to be placed on LED/light source the bottom of diffuser plate so that light is incident from bottom, and LED/light source and diffuser plate it
Between there is certain incident distance, light is diffused into face using diffuser plate.Side entering type enters just is placed on leaded light by LED/light source
The side of plate so that light incides light guide plate from side and diffuses into face.Therefore, side entering type, which enters light and compares straight-down negative and enter light, more can
Realize the lightening of LCD TV.
The light guide plate used yet with existing side entering-type LED backlight source is generally plastics acrylic board, its by temperature and
The influence of humidity is very big, easily causes light guide plate self-deformation, the deformation of extruding liquid crystal display or light guide plate light inputting end and LED/light source
Spacing changes, so that it is bad to cause picture to show.Further, since existing side entering-type LED backlight source is generally single short brink
Enter light, if the light path of liquid crystal display is oversize, light guide plate can not be by light uniformization, it is difficult to ensure display picture brightness uniformity, so single
Short brink enters light and is difficult to use in large scale screen LCD TV.
Utility model content
The purpose of this utility model is a kind of backlight for LCD TV of offer, and the backlight is side entering type LED
Backlight, its overall construction design is ingenious, on the one hand can effectively solve light guide plate itself torsional deformation and cause liquid crystal display to show
The problem of picture is poor, on the other hand also ensures that backlight has higher uniform light degree and brightness.
To achieve these goals, the technical solution adopted in the utility model is, a kind of backlight for LCD TV,
Including glue frame and outer iron in light guide plate assembly, LED light bar, PMMA diffuser plates, DBEF brightening pieces, the two-sided glue frame of black and white shading, U-shaped
Glue frame is placed in the inside of outer chase in frame, the U-shaped, and one end positioned at glue frame in U-shaped on the inwall of outer chase is provided with
LED clamp bar slot, laminating is placed in U-shaped successively from the bottom up for the light guide plate assembly, PMMA diffuser plates and DBEF brightening pieces
In glue frame, the LED light bar is placed in LED clamp bar slot, and the two-sided glue frame of black and white shading is pasted onto DBEF brightening pieces
Top, and LED clamp bar slot is blocked completely, LCDs is pasted onto to the top of the two-sided glue frame of black and white shading；Institute
Stating light guide plate assembly includes optical glass light guide plate and the reflective coating for being pasted onto light guide plate bottom, and the LED light bar includes aluminium
Base copper-clad plate and several SMD LED lamp beads, the SMD LED lamp beads are welded on aluminum-based copper-clad plate, and SMD LED lamp beads
Fit together between aluminum-based copper-clad plate using heat conductive silica gel, the SMD LED lamp beads face optical glass light guide plate
Side incidence surface.
As a kind of improvement of the present utility model, the thickness of the light guide plate assembly is 1-3mm.
As a kind of improvement of the present utility model, all SMD LED lamp beads in the LED light bar are divided into two rows arrangement,
Often row is provided with 4-6 paths of LEDs lamp bead strings, every paths of LEDs lamp bead string and is connected in series with 4-6 LEDs lamp beads.
As a kind of improvement of the present utility model, between LED lamp bead alternating on every paths of LEDs lamp bead string of same row etc.
Every arrangement.
As a kind of improvement of the present utility model, the spacing between the adjacent two LEDs lamp bead of same row is 10-
15mm。
As a kind of improvement of the present utility model, the two ends of the outer chase are provided with heat dissipation ventilation hole, wherein, a radiating
Air vent is arranged on the cell wall of LED clamp bar slot, and another heat dissipation ventilation hole is arranged far from the outer chase of LED clamp bar slot
On wall.
As a kind of improvement of the present utility model, the SMD LED lamp beads use encapsulation model 5050, power for 0.5W
And luminous flux is up to the 30lm white lamps of LED.
As a kind of improvement of the present utility model, the reflecting surface of the reflective coating is in rough shape, by inciting somebody to action
Reflector design is into rough shape so that after the reflected face reflection of light of directive reflective coating, in dispersed directive
Glass light guide plate, it is ensured that be irradiated to the uniformity of the light of light guide plate, and can effectively prevent light leak.
Relative to prior art, the overall construction design of the utility model backlight is ingenious, dismounting assembling maintenance replacing side
Just, brightness is high and uniform light, and with good structural stability and anti-twist deformability, service life is long, due to
The light guide plate assembly that optical glass light guide plate and reflective coating are collectively constituted is employed in this backlight, existing modeling can be effectively solved
Being easily distorted present in material light guide plate deforms and causes the problem of LCDs display picture is poor, and by being used
The thickness of light guide plate assembly there was only 1-3mm, also can effectively reduce the thickness of LCDs, it is easy to accomplish ultra-thin liquid crystal electricity
Depending on.Further, since the LED light bar used staggers side by side for two rows, the small-power SMD LED lamp beads of arrangement, can not only be reduced
The power consumption of backlight, while because constituting LED light bar using the equally spaced multi-string LED lamp bead parallel connection of short spacing, LED light can be being met
On the premise of source has high brightness, more than 95% light uniformity, and photochromic the one of the white lamps of LED of same model can reach
Cause property is good, can effectively improve the integral illumination performance of backlight.Further, since it is logical that a radiating is respectively provided with the two ends of outer chase
Air holes, can effectively carry out in good time effectively radiating to the heat produced by LED lamp bead, so as to effectively ensure that LED lamp bead has length
The preferably luminescent properties of time, thus also effectively ensure that backlight has longer service life.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the arrangement schematic diagram of the SMD LED lamp beads of the utility model preferred embodiment.
In figure：Glue frame, 3-LED lamp bar necks, 4- LED light bars, 5- aluminum-based copper-clad plates, 6-SMD in the outer chases of 1-, 2-U shapes
LED lamp bead, 7- light guide plate assemblies, 8- optical glass light guide plates, 9- reflective coatings, 10- PMMA diffuser plates, 11- DBEF add lustre to
Piece, the two-sided glue frame of 12- black and white shadings, 13- LCDs, 14- heat dissipation ventilations hole.
Embodiment
In order to deepen, to understanding and cognition of the present utility model, the utility model to be further described below in conjunction with the accompanying drawings
And introduction.
As shown in figure 1, a kind of backlight for LCD TV, including light guide plate assembly 7, LED light bar 4, PMMA diffusion
Glue frame 2 is placed in plate 10, DBEF brightening pieces 11, the two-sided glue frame 12 of black and white shading, glue frame 2 and outer chase 1 in U-shaped, the U-shaped
The inside of outer chase 1, for carrying out buffer protection to the optical component being placed in interior glue frame 2, while can also effectively improve
The positional stability of optical component.The light guide plate assembly 7, PMMA diffuser plates 10 and DBEF brightening pieces 11 are pasted successively from the bottom up
Conjunction is placed in U-shaped in glue frame 2.The one end for being located at glue frame 2 in U-shaped on the inwall of outer chase 1 is provided with the neck 3 of LED light bar 4,
The LED light bar 4 is placed in the neck 3 of LED light bar 4, and is fixedly connected by screw with outer chase 1.The black and white shading is double
Face glue frame 12 is pasted onto the top of DBEF brightening pieces 11, and the neck 3 of LED light bar 4 is blocked completely, so as to effectively anti-
Leak-stopping light, improves light source utilization rate and brightness, LCDs 13 is pasted onto to the top of the two-sided glue frame 12 of black and white shading.It is described
Light guide plate assembly 7 includes optical glass light guide plate 8 and is pasted onto the reflective coating 9 of light guide plate bottom, the reflective coating it is anti-
Face is penetrated in rough shape, by by reflector design into rough shape so that the light of directive reflective coating 9
After reflected face reflection, in dispersed directive glass light guide plate, it is ensured that be irradiated to the uniformity of the light of light guide plate, and can have
Effect prevents light leak.The thickness of the light guide plate assembly 7 is 1-3mm, with thickness of thin, guide-lighting uniformity be good, light source utilization rate is high
The advantages of.Can be using healthy and free from worry Iris glass as the optical glass light guide plate 8 during practice, reflective coating 9 leads to
The bottom for crossing ultra-violet curing pressure sensitive adhesive and glass light guide plate is pasted together.
The LED light bar 4 includes aluminum-based copper-clad plate 5 and several SMD LED lamp beads 6, and the SMD LED lamp beads 6 are welded
Fit together on aluminum-based copper-clad plate 5, and between SMD LED lamp beads 6 and aluminum-based copper-clad plate 5 using heat conductive silica gel, it is described
SMD LED lamp beads 6 face the side incidence surface of optical glass light guide plate 8.Wherein, all SMD LED in the LED light bar 4
6 points of lamp bead is two rows arrangement, and often row is provided with 4-6 paths of LEDs lamp bead strings, every paths of LEDs lamp bead string and is connected in series with 4-6 LED lamps
Pearl.LED lamp bead on every paths of LEDs lamp bead string of same row is alternately arranged at equal intervals.Positioned at adjacent two LEDs of same row
Spacing between lamp bead is 10-15mm.As shown in Fig. 2 there is the SMD LED lamp beads 6 that two rows arrange, often in the LED light bar 4
Row is provided with 5 paths of LEDs lamp bead strings, and 5 SMD LED lamp beads 6 are connected in series with per paths of LEDs lamp bead string.The SMD LED lamp beads 6
Encapsulation model 5050, power are used for the white lamps of LED of 0.5W and luminous flux up to 30lm.It is so low power using many
The white lamps of LED on the premise of can meeting and require ensureing brightness, effectively reduce caloric value as light source, improve bright reliability and
Uniformity.
In addition, the two ends of the outer chase 1 are provided with heat dissipation ventilation hole 14, wherein, a heat dissipation ventilation hole 14 is arranged on LED
On the cell wall of the neck 3 of lamp bar 4, another heat dissipation ventilation hole 14 is arranged far from the frame wall of outer chase 1 of the neck 3 of LED light bar 4.
So design further effectively can play the effect of ventilation and heat to LED light bar 4, so as to improve the service life of backlight.
Technological means disclosed in the utility model scheme is not limited only to the technological means disclosed in above-mentioned embodiment, also
Including being combined constituted technical scheme by above technical characteristic.It should be pointed out that for the ordinary skill of the art
For personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and moistened
Decorations are also considered as protection domain of the present utility model.
Claims (8)
1. a kind of backlight for LCD TV, it is characterised in that：Including light guide plate assembly, LED light bar, PMMA diffuser plates,
Glue frame is placed in outer chase in DBEF brightening pieces, the two-sided glue frame of black and white shading, glue frame and outer chase in U-shaped, the U-shaped
Portion, and it is located at one end of glue frame in U-shaped provided with LED clamp bar slot, the light guide plate assembly, PMMA expansions on the inwall of outer chase
Fall apart and laminating is placed in U-shaped in glue frame DBEF brightening pieces successively from the bottom up, the LED light bar is placed on LED light bar card
In groove, the two-sided glue frame of black and white shading is pasted onto the top of DBEF brightening pieces, and LED clamp bar slot is blocked completely,
LCDs is pasted onto to the top of the two-sided glue frame of black and white shading；The light guide plate assembly includes optical glass light guide plate and viscous
The reflective coating of light guide plate bottom is attached to, the LED light bar includes aluminum-based copper-clad plate and several SMD LED lamp beads, the SMD
LED lamp bead is welded on aluminum-based copper-clad plate, and is fitted in one using heat conductive silica gel between SMD LED lamp beads and aluminum-based copper-clad plate
Rise, the SMD LED lamp beads face the side incidence surface of optical glass light guide plate.
2. a kind of backlight for LCD TV as claimed in claim 1, it is characterised in that the institute in the LED light bar
There are SMD LED lamp beads to be divided into two rows arrangement, often row is provided with 4-6 paths of LEDs lamp bead strings, every paths of LEDs lamp bead string and is connected in series with 4-6
LEDs lamp bead.
3. a kind of backlight for LCD TV as claimed in claim 2, it is characterised in that positioned at same Pai Mei roads
LED lamp bead in LED bead string is alternately arranged at equal intervals.
4. a kind of backlight for LCD TV as claimed in claim 2 or claim 3, it is characterised in that positioned at the phase of same row
Spacing between adjacent two LEDs lamp beads is 10-15mm.
5. a kind of backlight for LCD TV as claimed in claim 4, it is characterised in that the two ends of the outer chase are set
There is heat dissipation ventilation hole, wherein, a heat dissipation ventilation hole is arranged on the cell wall of LED clamp bar slot, and another heat dissipation ventilation hole is set
Put on the outer chase wall away from LED clamp bar slot.
6. a kind of backlight for LCD TV as claimed in claim 5, it is characterised in that the thickness of the light guide plate assembly
Spend for 1-3mm.
7. a kind of backlight for LCD TV as claimed in claim 6, it is characterised in that the reflection of the reflective coating
Face is in rough shape.
8. a kind of backlight for LCD TV as claimed in claim 7, it is characterised in that the SMD LED lamp beads are adopted
With encapsulation model 5050, the white lamps of LED that power is 0.5W and luminous flux is 30lm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621485627.1U CN206363056U (en) | 2016-12-31 | 2016-12-31 | A kind of backlight for LCD TV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621485627.1U CN206363056U (en) | 2016-12-31 | 2016-12-31 | A kind of backlight for LCD TV |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206363056U true CN206363056U (en) | 2017-07-28 |
Family
ID=59377769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621485627.1U Expired - Fee Related CN206363056U (en) | 2016-12-31 | 2016-12-31 | A kind of backlight for LCD TV |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206363056U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113534534A (en) * | 2021-07-08 | 2021-10-22 | 深圳亿成光电科技有限公司 | Backlight source structure of vehicle-mounted TFT display screen |
-
2016
- 2016-12-31 CN CN201621485627.1U patent/CN206363056U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113534534A (en) * | 2021-07-08 | 2021-10-22 | 深圳亿成光电科技有限公司 | Backlight source structure of vehicle-mounted TFT display screen |
| CN113534534B (en) * | 2021-07-08 | 2024-01-05 | 深圳亿成光电科技有限公司 | Backlight source structure of vehicle-mounted TFT display screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170728 Termination date: 20181231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |