CN107490898A - Side entrance back module and liquid crystal display device - Google Patents
Side entrance back module and liquid crystal display device Download PDFInfo
- Publication number
- CN107490898A CN107490898A CN201710693644.7A CN201710693644A CN107490898A CN 107490898 A CN107490898 A CN 107490898A CN 201710693644 A CN201710693644 A CN 201710693644A CN 107490898 A CN107490898 A CN 107490898A
- Authority
- CN
- China
- Prior art keywords
- guide plate
- light guide
- groove
- entrance back
- side entrance
- 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
Links
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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/009—Positioning aspects of the light source in the package
Abstract
The invention provides a kind of side entrance back module and liquid crystal display device.The side entrance back module includes：Radiate aluminium extruded, backboard, light guide plate and LED light bar；The radiation aluminium, which extrudes, to be included：Bottom plate and the side plate for being vertically connected at the bottom plate；The light guide plate is laminated on the side plate, and the backboard is between the light guide plate and the side plate, and bottom plate position corresponding with the incidence surface of the light guide plate is formed with a groove；The LED light bar is placed in the groove; the thickness of the incidence surface of the light guide plate is more than the width of the groove; the light guide plate is carried out using the casting lug thereon on groove both sides spacing; it is set can not also to push up bad LED light bar after expanded by heating; while LED light bar effect is protected; coupling electrical distance can also be reduced, improve light efficiency and the brightness of backlight module, increase the competitiveness of product.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of side entrance back module and liquid crystal display device.
Background technology
With the development of Display Technique, the plane such as liquid crystal display (Liquid Crystal Display, LCD) display dress
Put because having the advantages that high image quality, power saving, fuselage is thin and has a wide range of application, and be widely used in mobile phone, TV, individual number
The various consumption electronic products such as word assistant, digital camera, notebook computer, desktop computer, turn into the master in display device
Stream.
It is backlight liquid crystal display that liquid crystal display device on existing market is most of, it include liquid crystal display panel and
Backlight module (backlight module).The operation principle of liquid crystal display panel is put among the parallel glass substrate of two panels
Liquid crystal molecule is put, there are many tiny electric wires vertically and horizontally among two panels glass substrate, liquid crystal is controlled by whether being powered
Molecular changes direction, the light of backlight module is reflected into generation picture.
Backlight module is divided into two kinds of side entrance back module and down straight aphototropism mode set according to the difference of light source incidence position.
Down straight aphototropism mode set is by illuminating source such as CCFL (Cold Cathode Fluorescent Lamp, cathodouminescence lamp
Pipe) or LED (Light Emitting Diode, light emitting diode) be arranged on liquid crystal panel rear, directly formed area source carry
Supply liquid crystal panel.And side entrance back module is that backlight LED lamp bar is located to the back plate edges at liquid crystal panel side rear,
The light that LED light bar is sent enters light guide plate from the incidence surface of light guide plate side, from light guide plate exiting surface after reflection and diffusion
Project, then liquid crystal display panel is supplied to form area source via optical diaphragm group.
As shown in Figure 1 to Figure 2, existing side entrance back module generally includes：Radiate aluminium extruded 10, backboard 20, light guide plate
30 and LED light bar 40；The aluminium extruded 10 that wherein radiates is L-shaped, including：Bottom plate 101 and the side being vertically connected with the bottom plate 101
Plate 102, the both ends of the bottom plate 101 are respectively equipped with a boss 103, and the light guide plate 30 is described on the boss 103
LED light bar 40 is in the region on the bottom plate 101 between two boss 103, the side plate 102, backboard 20 and leads
Width of the tabula rasa 30 along the bottom plate 101 stacks gradually；Light guide plate 30 only has the limit of supporting construction (boss 103) at both ends
System, but in the length direction of LED light bar 40, the position of big long distance between both ends boss 103 of light guide plate 30 is to engrave completely
Empty without any support and limitation, because the light mode LED light bar 40 that enters of side entering type is generated heat seriously, light guide plate 30 is heated it
After will dilatancy, will be along entering light after now there is no limiting structure to cause it heated due to the center section of light guide plate 30
Direction expands towards LED lamp bead, so be just easy to push up the LED lamp bead in bad LED light bar 40, in order to avoid LED lamp bead is damaged,
The height of increase boss 103, but the increase of the height of boss 103 are just needed, coupling electrical distance (OD) can be caused excessive, caused into light
Efficiency reduces, so as to reduce the brightness of backlight module.
The content of the invention
It is an object of the invention to provide a kind of side entrance back module, can prevent light guide plate expanded by heating and push up bad
LED lamp bead, reduce coupling electrical distance, improve light efficiency and the brightness of backlight module.
The present invention also aims to provide a kind of liquid crystal display device, light guide plate expanded by heating can be prevented and pushed up bad
LED lamp bead, reduce coupling electrical distance, improve light efficiency and the brightness of backlight module.
To achieve the above object, the invention provides a kind of side entrance back module, including：Radiate aluminium extruded, backboard, leaded light
Plate and LED light bar；
The radiation aluminium, which extrudes, to be included：Bottom plate and the side plate for being vertically connected at the bottom plate；
The light guide plate is laminated on the side plate, and the backboard is described between the light guide plate and the side plate
Bottom plate position corresponding with the incidence surface of the light guide plate is formed with a groove；
The LED light bar is placed in the groove, and the thickness of the incidence surface of the light guide plate is more than the width of the groove
Degree.
The LED light bar includes：Lamp bar body and multiple LED lamp beads on the lamp bar body.
The width of the groove is equal to the width of the LED light bar.
The depth of the groove is more than the height of the LED light bar.
The length of the groove is more than or equal to the length of the LED light bar.
Covered with reflectorized material on the madial wall of the groove.
The reflectorized material is reflecting coating.
Two casting lug thereons of the both ends of the incidence surface of the light guide plate respectively with the groove both sides contact.
The present invention also provides a kind of liquid crystal display device, including above-mentioned side entrance back module.
Beneficial effects of the present invention：The invention provides a kind of side entrance back module, including：Radiating aluminium extruded, backboard, lead
Tabula rasa and LED light bar；The radiation aluminium, which extrudes, to be included：Bottom plate and the side plate for being vertically connected at the bottom plate；The light guide plate stacking
In on the side plate, for the backboard between the light guide plate and the side plate, the bottom plate enters light with the light guide plate
Position corresponding to face is formed with a groove；The LED light bar is placed in the groove, the thickness of the incidence surface of the light guide plate
More than the width of the groove, the light guide plate is carried out using the casting lug thereon on groove both sides it is spacing, make its expanded by heating it
Bad LED light bar can not be also pushed up afterwards, while LED light bar effect is protected, additionally it is possible to reduce coupling electrical distance, improve backlight module
Light efficiency and brightness, increase the competitiveness of product.The present invention a kind of liquid crystal display device is also provided, can prevent light guide plate by
Thermal expansion and push up bad LED lamp bead, reduce coupling electrical distance, improve light efficiency and the brightness of backlight module.
Brief description of the drawings
In order to be further understood that the feature of the present invention and technology contents, refer to below in connection with the detailed of the present invention
Illustrate and accompanying drawing, however accompanying drawing only provide with reference to and explanation use, be not used for being any limitation as the present invention.
In accompanying drawing,
Fig. 1 is the structure chart of existing side entrance back module；
Fig. 2 is the structure chart of the radiating aluminium extruded of existing side entrance back module；
Fig. 3 is the structure chart of the side entrance back module of the present invention；
Fig. 4 is sectional view of the side entrance back module in groove of the present invention；
Fig. 5 is the structure chart of the radiating aluminium extruded of the side entrance back module of the present invention.
Embodiment
Further to illustrate the technological means and its effect of the invention taken, below in conjunction with being preferable to carry out for the present invention
Example and its accompanying drawing are described in detail.
Fig. 3 to Fig. 5 is referred to, the present invention provides a kind of side entrance back module, including：Radiate aluminium extruded 1, backboard 2, leaded light
Plate 3 and LED light bar 4；
The radiating aluminium extruded 1 includes：Bottom plate 11 and the side plate 12 for being vertically connected at the bottom plate 11；
The light guide plate 3 is laminated on the side plate 12, the backboard 2 be located at the light guide plate 3 and the side plate 12 it
Between, the bottom plate 11 position corresponding with the incidence surface of the light guide plate 3 is formed with a groove 13；
The LED light bar 4 is placed in the groove 13, and the thickness of the incidence surface of the light guide plate 3 is more than the groove
13 width.
Specifically, the LED light bar 4 includes：Lamp bar body 41 and multiple LED on the lamp bar body 41
Lamp bead 42.
Specifically, the width of the groove 13 is equal to the width of the LED light bar 4.The depth of the groove 13 is more than institute
State the height of LED light bar 4.The length of the groove 13 is more than or equal to the length of the LED light bar 4.The light guide plate 3 enters
Two casting lug thereons 14 of the both ends of smooth surface respectively with the both sides of groove 13 contact.
It should be noted that the position of the invention by corresponding to the incidence surface of light guide plate 3 on the bottom plate 11 of radiating aluminium extruded 1
Formed with a groove 13, so as to which whole LED light bar 4 is put into groove 13, the width of the groove 13 is less than the light guide plate 3
Incidence surface thickness so that the both sides of the incidence surface of light guide plate 3 by the casting lug thereon 14 of the both sides of groove 13 it is spacing live,
The protection along the whole length direction of the LED light bar 4 is provided for the LED light bar 4 so that the expanded by heating of light guide plate 3
Afterwards, due to being limited by the casting lug thereon 14 on the both sides of groove 13, it can not also expand top bad LED light bar 4.
Coupling electrical distance refers to that exiting surface (LED light bar 4) arrives the distance between incidence surface (light guide plate 3), and the distance is longer,
What then light scattered and disappeared during being incided after being sent from LED light bar 4 in light guide plate 3 is more, so as to cause the brightness of backlight
Weaken, influence LCD display effect, and utilize the groove structure of the present invention, in coupling electrical distance very hour, still can ensure
LED light bar 4 is not pushed up bad by light guide plate 3, and compared to prior art, the present invention can effectively reduce coupling electrical distance, lift backlight mould
The performance for entering light effect and brightness, improving backlight module of group.
At the same time, in order to improve the light extraction efficiency of LED light bar 4, the present invention can also cover on the madial wall of groove 13
Reflectorized material, it is preferable that the reflectorized material is the reflecting coating of high reflectance.
Being worth mentioning is, side entrance back module of the invention, can also include some other devices, such as in backboard
Setting reflector plate between 2 and light guide plate 3, is laminated optics module piece on light guide plate 3, and the optical mode pack can include rib
Eyeglass and diffusion sheet etc., further to improve the performance of backlight module.
In addition, the present invention also provides a kind of liquid crystal display device, including above-mentioned side entrance back module.
In summary, the invention provides a kind of side entrance back module, including：Radiate aluminium extruded, backboard, light guide plate, with
And LED light bar；The radiation aluminium, which extrudes, to be included：Bottom plate and the side plate for being vertically connected at the bottom plate；The light guide plate is laminated in described
On side plate, for the backboard between the light guide plate and the side plate, the bottom plate is corresponding with the incidence surface of the light guide plate
Position formed with a groove；The LED light bar is placed in the groove, and the thickness of the incidence surface of the light guide plate is more than institute
State the width of groove, using groove both sides casting lug thereon to the light guide plate carry out it is spacing, make its after expanded by heating also without
Method top bad LED light bar, while LED light bar effect is protected, additionally it is possible to reduce coupling electrical distance, that improves backlight module enters light efficiency
Rate and brightness, increase the competitiveness of product.The present invention also provides a kind of liquid crystal display device, can prevent light guide plate expanded by heating
And bad LED lamp bead is pushed up, reduce coupling electrical distance, improve light efficiency and the brightness of backlight module.
It is described above, for the person of ordinary skill of the art, can be with technique according to the invention scheme and technology
Other various corresponding changes and deformation are made in design, and all these changes and deformation should all belong to the claims in the present invention
Protection domain.
Claims (9)
- A kind of 1. side entrance back module, it is characterised in that including：Radiate aluminium extruded (1), backboard (2), light guide plate (3) and LED light bar (4)；The radiating aluminium extruded (1) includes：Bottom plate (11) and the side plate (12) for being vertically connected at the bottom plate (11)；The light guide plate (3) is laminated on the side plate (12), and the backboard (2) is located at the light guide plate (3) and the side plate (12) between, the bottom plate (11) position corresponding with the incidence surface of the light guide plate (3) is formed with a groove (13)；The LED light bar (4) is placed in the groove (13), and the thickness of the incidence surface of the light guide plate (3) is more than described recessed The width of groove (13).
- 2. side entrance back module as claimed in claim 1, it is characterised in that the LED light bar (4) includes：Lamp bar body And multiple LED lamp beads (42) on the lamp bar body (41) (41).
- 3. side entrance back module as claimed in claim 1, it is characterised in that the width of the groove (13) is equal to described The width of LED light bar (4).
- 4. side entrance back module as claimed in claim 1, it is characterised in that the depth of the groove (13) is more than described The height of LED light bar (4).
- 5. side entrance back module as claimed in claim 1, it is characterised in that the length of the groove (13) is more than or equal to The length of the LED light bar (4).
- 6. side entrance back module as claimed in claim 1, it is characterised in that on the madial wall of the groove (13) covered with Reflectorized material.
- 7. side entrance back module as claimed in claim 6, it is characterised in that the reflectorized material is reflecting coating.
- 8. side entrance back module as claimed in claim 1, it is characterised in that the both ends of the incidence surface of the light guide plate (3) Two casting lug thereons (14) with the groove (13) both sides contact respectively.
- 9. a kind of liquid crystal display device, it is characterised in that including the side entrance back mould as described in any one of claim 1 to 8 Group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710693644.7A CN107490898A (en) | 2017-08-14 | 2017-08-14 | Side entrance back module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710693644.7A CN107490898A (en) | 2017-08-14 | 2017-08-14 | Side entrance back module and liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107490898A true CN107490898A (en) | 2017-12-19 |
Family
ID=60645541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710693644.7A Pending CN107490898A (en) | 2017-08-14 | 2017-08-14 | Side entrance back module and liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107490898A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108287435A (en) * | 2018-01-31 | 2018-07-17 | 惠州市华星光电技术有限公司 | A kind of side entrance back module and preparation method thereof and liquid crystal display device |
| CN108508655A (en) * | 2018-04-24 | 2018-09-07 | 合肥惠科金扬科技有限公司 | Backlight module and its display |
| CN109061790A (en) * | 2018-07-25 | 2018-12-21 | 青岛海信电器股份有限公司 | A kind of side entrance back module |
| CN109581578A (en) * | 2019-01-15 | 2019-04-05 | 惠州市华星光电技术有限公司 | A kind of backlight module and liquid crystal display device |
| CN109799646A (en) * | 2019-03-19 | 2019-05-24 | 厦门天马微电子有限公司 | A kind of lamp bar of backlight module, backlight module and display device |
| CN113759603A (en) * | 2021-09-08 | 2021-12-07 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN113985654A (en) * | 2021-10-21 | 2022-01-28 | 合肥泰沃达智能装备有限公司 | Display device with controllable light guide plate |
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| US20090303747A1 (en) * | 2008-06-09 | 2009-12-10 | Kocam International Co., Ltd. | Heat dissipating structure of backlight module |
| CN202074348U (en) * | 2011-05-16 | 2011-12-14 | 深圳市华星光电技术有限公司 | Liquid-crystal display and backlight module |
| CN202938175U (en) * | 2012-11-30 | 2013-05-15 | 四川长虹光电有限公司 | Light emitting diode (LED) liquid crystal display (LCD) backlight assembly |
| CN103343926A (en) * | 2013-07-19 | 2013-10-09 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
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| CN205450511U (en) * | 2015-12-30 | 2016-08-10 | 康佳集团股份有限公司 | LED LCD module |
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| US20090303747A1 (en) * | 2008-06-09 | 2009-12-10 | Kocam International Co., Ltd. | Heat dissipating structure of backlight module |
| CN202074348U (en) * | 2011-05-16 | 2011-12-14 | 深圳市华星光电技术有限公司 | Liquid-crystal display and backlight module |
| CN202938175U (en) * | 2012-11-30 | 2013-05-15 | 四川长虹光电有限公司 | Light emitting diode (LED) liquid crystal display (LCD) backlight assembly |
| CN203349188U (en) * | 2013-05-27 | 2013-12-18 | 南京中电熊猫液晶显示科技有限公司 | LED lamp strip fixing device and LED backlight module |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108287435A (en) * | 2018-01-31 | 2018-07-17 | 惠州市华星光电技术有限公司 | A kind of side entrance back module and preparation method thereof and liquid crystal display device |
| CN108508655A (en) * | 2018-04-24 | 2018-09-07 | 合肥惠科金扬科技有限公司 | Backlight module and its display |
| CN109061790A (en) * | 2018-07-25 | 2018-12-21 | 青岛海信电器股份有限公司 | A kind of side entrance back module |
| CN109581578A (en) * | 2019-01-15 | 2019-04-05 | 惠州市华星光电技术有限公司 | A kind of backlight module and liquid crystal display device |
| CN109799646A (en) * | 2019-03-19 | 2019-05-24 | 厦门天马微电子有限公司 | A kind of lamp bar of backlight module, backlight module and display device |
| CN113759603A (en) * | 2021-09-08 | 2021-12-07 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN113985654A (en) * | 2021-10-21 | 2022-01-28 | 合肥泰沃达智能装备有限公司 | Display device with controllable light guide plate |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171219 |
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| RJ01 | Rejection of invention patent application after publication |