CN108152878A - Side backlight type backlight module - Google Patents
Side backlight type backlight module Download PDFInfo
- Publication number
- CN108152878A CN108152878A CN201711465728.1A CN201711465728A CN108152878A CN 108152878 A CN108152878 A CN 108152878A CN 201711465728 A CN201711465728 A CN 201711465728A CN 108152878 A CN108152878 A CN 108152878A
- Authority
- CN
- China
- Prior art keywords
- guide plate
- light guide
- light
- light source
- 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
Links
- 238000009792 diffusion process Methods 0.000 claims abstract description 30
- 239000012528 membrane Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
-
- 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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
Abstract
The present invention provides a kind of side backlight type backlight module, reflector plate, the diffusion sheet of the fitting light guide plate upper surface setting and the light source for being arranged on the light guide plate side set including light guide plate, the fitting light guide plate lower surface；The lug boss contacted with the reflector plate is provided in the lower face side of the light guide plate；Inner fovea part is additionally provided in the free end of the lug boss.In sidelight type backlight module provided by the invention, lug boss and inner fovea part between light guide plate and reflector plate, the junction of light guide plate and hollow cavity form the reflection of light and refraction, the further degree of divergence for realizing light, light is improved to the transmission range far from light source side, then reduces that sidelight type backlight module is oversized and the dark space problem that occurs；Luminous power so without excessive setting light source, also avoid light source power it is excessive caused by calorific value it is excessive the problem of.
Description
Technical field
The present invention relates to technical field of liquid crystal display, and in particular to a kind of side backlight type backlight module and the aforementioned back of the body of use
The liquid crystal display of optical mode group.
Background technology
Because of the features such as following process assembling procedure is easy, uniform in light emission, existing LCD display is mostly using side-light type
Backlight module.In the backlight module of side-light type, light source is arranged on the side of light guide plate, and the light of light source transmitting enters light guide plate
It is interior, coordinated using light guide plate and the reflecting piece for being fitted in bottom surface of light guide plate, realize that light is emitted from the upper side of light guide plate.All
In such as LCD TV large scale liquid crystal display, since the length and width of light guide plate is much larger than its thickness, using side-light type
The light needs entered during light guide plate in light guide plate guarantee to be emitted to the side opposite with light source, screen are avoided to occur secretly
Area's problem, the luminous intensity of light source need correspondingly to increase.And the luminous intensity of light source increases so as to display local area
The cooling requirements in domain improve, the service life of light source and stability in use decrease.
Invention content
During to solve existing sidelight type backlight module size increase, the luminous intensity needs of light source are dramatically increased and are avoided
There is the problem of dark space, the present invention provides a kind of new sidelight type backlight module.
The present invention provides a kind of sidelight type backlight module, is set including light guide plate, the fitting light guide plate lower surface anti-
Penetrate piece, the diffusion sheet that the fitting light guide plate upper surface is set and the light source for being arranged on the light guide plate side；
The lug boss contacted with the reflector plate is provided in the lower face side of the light guide plate；The lug boss from
Inner fovea part is additionally provided with by end.
Optionally, by close to the light source side, to far from the light source side, the density of the lug boss gradually increases.
Optionally, the light guide plate close to the light source side to far from light source side thickness by being gradually reduced
Wedge shape.
Optionally, the light source is point light source；
The groove for accommodating the light source is provided in the side of the light guide plate.
Optionally, the reflecting piece of the transmitting light of the reflection point light source is provided at the notch of the groove.
Optionally, the side for the light source being not provided in the light guide plate is fitted with reflective membrane.
Optionally, the diffusion sheet includes the lower diffusion sheet being bonded with the light guide plate and on the upside of the lower diffusion sheet
Upper diffusion sheet；
The lower diffusion sheet and it is described on be additionally provided with light-collecting piece between diffusion sheet.
In sidelight type backlight module provided by the invention, lug boss and inner fovea part be used between light guide plate and reflector plate,
The junction of light guide plate and hollow cavity forms the reflection of light and refraction, the further degree of divergence for realizing light, improves
Light then reduces that sidelight type backlight module is oversized and the dark space problem that occurs to the transmission range far from light source side；
Luminous power so without excessive setting light source, also avoid light source power it is excessive caused by calorific value is excessive asks
Topic.
Description of the drawings
By reference to the explanation and the content of claims below in conjunction with attached drawing, and with to the present invention more comprehensively
Understand, other purposes of the invention and result will be more apparent and should be readily appreciated that.In the accompanying drawings：
Fig. 1 is the backlight module schematic cross-section that embodiment provides；
Wherein：11- light guide plates, 111- lug bosses, 112- inner fovea parts, 113- grooves, 12- reflector plates, 13- diffusion sheets,
Diffusion sheet under 131-, the upper diffusion sheets of 132-, 14- light sources, 15- reflecting pieces, 16- reflective membranes, 17- light-collecting pieces.
Identical label indicates similar or corresponding feature or function in all the appended drawings.
Specific embodiment
Specific embodiments of the present invention are described in detail below with reference to attached drawing.
Fig. 1 is the backlight module schematic cross-section that embodiment provides.As shown in Figure 1, the side-light type back of the body provided in this embodiment
Optical mode group includes light guide plate 11, reflector plate 12, diffusion sheet 13 and light source 14.
Wherein：Reflecting piece 15 is bonded the lower surface of light guide plate 11, is used to implement reflection of the light to 11 side of light guide plate；Diffusion
Piece 13 is bonded the upper surface of light guide plate 11, for will be scattered from the light of light guide plate side incidence, avoids light non-uniform
Problem；Light source 14 is arranged on the side of light guide plate 11.
As shown in Figure 1, in the present embodiment, side is provided with lug boss 111, the following table of light guide plate 11 below light guide plate 11
Face is contacted by lug boss 111 with reflector plate 12；In addition, it is additionally provided with inner fovea part 112 in the free end of lug boss 111；Convex
Play the side in portion 111, inner fovea part 112 is hollow cavity.
Aforementioned lug boss 111 and inner fovea part 112 are used between light guide plate 11 and reflector plate 12, light guide plate 11 and hollow cavity
Junction form light reflection and refraction, the further degree of divergence for realizing light, improve light to far from light source 14 1
The transmission range of side then reduces that sidelight type backlight module is oversized and the dark space problem that occurs；So set without excessive
Put the luminous power of light source 14, also avoid 14 power of light source it is excessive caused by calorific value it is excessive the problem of.
Continuing with referring to Fig. 1, in the present embodiment, by leaning on the side of close to sources 14 to the side far from light source 14, lug boss
111 density is incrementally increased.It is found that by 14 side of close to sources, luminous intensity is larger, sets the lug boss 111 of negligible amounts
Some light can be distributed to far from 14 side of light source；And with light source 14 is gradually distance from, luminous intensity is gradually reduced, at this time
In order to be dispersed to light far from 14 side of light source, need to set more lug bosses 111.Certainly, in other embodiments, root
It according to the guide-lighting situation of 11 ontology of light guide plate, can also be distributed the even density of lug boss 111.
In the present embodiment, the thickness of 11 ontology of light guide plate is identical (at this point, not considering lug boss 111).In other embodiment
In, light guide plate 11 can also be arranged to by 14 side of close to sources is leaned on to make to the wedge shape being gradually reduced far from 14 side thickness of light source
The side for obtaining the fitting reflector plate 12 of light guide plate 11 is skewed, then improves light to the ability disperseed far from 14 side of light source.
As shown in Figure 1, the light source 14 in the present embodiment is point light source.In order to install point light source, in the side of light guide plate 11
It is provided with the groove 113 for accommodating point light source.In other embodiments, light source 14 can also be changed to line source；Light source 14 is not
It is limited to be arranged in groove 113, can also be arranged in the lateral frame for supporting each laminated structure.
Further, it in order to avoid the light that light source 14 is sent out is from side leakage, is provided at the notch of groove 113 anti-
The reflecting piece 15 of exit point source emissioning light line.
In addition, light guide plate 11 be set light source 14 side can also be bonded setting reflective membrane (16, utilize reflective membrane 16
It will be reflexed in light guide plate 11 from the light of each 11 each side leakage of light guide plate.
In the present embodiment, diffusion sheet 13 includes lower diffusion sheet 131 and upper diffusion sheet 132.Lower diffusion sheet 131 and light guide plate 11
Fitting, upper diffusion sheet 132 are arranged on the upside of lower diffusion sheet 131.It is also set up between upper diffusion sheet 132 and lower diffusion sheet 131
Have light-collecting piece 17, using light-collecting piece 17 set angle will be concentrated on from the incident light source 14 of lower diffusion sheet 131, avoid light to
Side transition diffusion, the directionality for improving backlight module light.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in change or replacement, should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention described should be subject to the protection scope in claims.
Claims (7)
1. a kind of sidelight type backlight module, the reflector plate including light guide plate (11), fitting light guide plate (11) the lower surface setting
(12), it is bonded the diffusion sheet (13) of light guide plate (11) the upper surface setting and is arranged on the light source of the light guide plate (11) side
(14)；It is characterized in that：
The lug boss (111) contacted with the reflector plate (12) is provided in the lower face side of the light guide plate (11)；Described
The free end of lug boss (111) is additionally provided with inner fovea part (112).
2. sidelight type backlight module according to claim 1, it is characterised in that：
By gradually increasing to the density far from the light source (14) side, the lug boss (111) close to the light source (14) side
Add.
3. according to sidelight type backlight module described in claims 1 or 2, it is characterised in that：
The light guide plate (11) is by being gradually reduced close to the light source (14) side to far from the light source (14) side thickness
Wedge shape.
4. sidelight type backlight module according to claim 3, it is characterised in that：
The light source (14) is point light source；
The groove (113) for accommodating the light source (14) is provided in the side of the light guide plate (11).
5. sidelight type backlight module according to claim 4, it is characterised in that：
The reflecting piece (15) of the transmitting light of the reflection light source (14) is provided at the notch of the groove (113).
6. sidelight type backlight module according to claim 5, it is characterised in that：
The side that the light source (14) is not provided in the light guide plate (11) is fitted with reflective membrane (16).
7. sidelight type backlight module according to claim 3, it is characterised in that：
The diffusion sheet (13) is including the lower diffusion sheet (131) that is bonded with the light guide plate (11) and positioned at the lower diffusion sheet
(131) the upper diffusion sheet (132) on the upside of；
Light-collecting piece (17) is additionally provided between the lower diffusion sheet (131) and the upper diffusion sheet (132).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711465728.1A CN108152878A (en) | 2017-12-28 | 2017-12-28 | Side backlight type backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711465728.1A CN108152878A (en) | 2017-12-28 | 2017-12-28 | Side backlight type backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108152878A true CN108152878A (en) | 2018-06-12 |
Family
ID=62463633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711465728.1A Pending CN108152878A (en) | 2017-12-28 | 2017-12-28 | Side backlight type backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108152878A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003035826A (en) * | 2001-07-24 | 2003-02-07 | Asahi Matsushita Electric Works Ltd | Light guide plate device |
| CN1396483A (en) * | 2001-07-13 | 2003-02-12 | 兴隆发电子股份有限公司 | Optical guide plate and method for making its module core |
| US20070058104A1 (en) * | 2005-09-09 | 2007-03-15 | Innolux Display Corp. | Light guide plate with W-shaped structures and backlight module using the same |
| CN101149520A (en) * | 2006-09-20 | 2008-03-26 | 深圳帝光电子有限公司 | Side light type curve guiding board backlight module |
| CN101561097A (en) * | 2009-05-21 | 2009-10-21 | 福州华映视讯有限公司 | Backlight module manufacturing method and backlight module |
| CN201555153U (en) * | 2009-12-01 | 2010-08-18 | 深圳帝光电子有限公司 | Uniform high-brightness side-light type backlight source |
| CN202583505U (en) * | 2012-05-28 | 2012-12-05 | 陈飞 | Light guide plate having multi-ring-type screen dot |
| CN202916457U (en) * | 2012-11-29 | 2013-05-01 | 京东方科技集团股份有限公司 | A light guide plate, a LED plane light source, and a display panel |
| CN103091742A (en) * | 2013-02-01 | 2013-05-08 | 宁波激智新材料科技有限公司 | Multilayer compound prismatic lens |
| CN106597598A (en) * | 2016-12-31 | 2017-04-26 | 盐城三鼎电子科技有限公司 | Novel backlight source light guide plate |
| CN208044112U (en) * | 2017-12-28 | 2018-11-02 | 重庆市中光电显示技术有限公司 | Sidelight type backlight module |
-
2017
- 2017-12-28 CN CN201711465728.1A patent/CN108152878A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1396483A (en) * | 2001-07-13 | 2003-02-12 | 兴隆发电子股份有限公司 | Optical guide plate and method for making its module core |
| JP2003035826A (en) * | 2001-07-24 | 2003-02-07 | Asahi Matsushita Electric Works Ltd | Light guide plate device |
| US20070058104A1 (en) * | 2005-09-09 | 2007-03-15 | Innolux Display Corp. | Light guide plate with W-shaped structures and backlight module using the same |
| CN101149520A (en) * | 2006-09-20 | 2008-03-26 | 深圳帝光电子有限公司 | Side light type curve guiding board backlight module |
| CN101561097A (en) * | 2009-05-21 | 2009-10-21 | 福州华映视讯有限公司 | Backlight module manufacturing method and backlight module |
| CN201555153U (en) * | 2009-12-01 | 2010-08-18 | 深圳帝光电子有限公司 | Uniform high-brightness side-light type backlight source |
| CN202583505U (en) * | 2012-05-28 | 2012-12-05 | 陈飞 | Light guide plate having multi-ring-type screen dot |
| CN202916457U (en) * | 2012-11-29 | 2013-05-01 | 京东方科技集团股份有限公司 | A light guide plate, a LED plane light source, and a display panel |
| CN103091742A (en) * | 2013-02-01 | 2013-05-08 | 宁波激智新材料科技有限公司 | Multilayer compound prismatic lens |
| CN106597598A (en) * | 2016-12-31 | 2017-04-26 | 盐城三鼎电子科技有限公司 | Novel backlight source light guide plate |
| CN208044112U (en) * | 2017-12-28 | 2018-11-02 | 重庆市中光电显示技术有限公司 | Sidelight type backlight module |
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