CN109061943A - Backlight module - Google Patents
Backlight module Download PDFInfo
- Publication number
- CN109061943A CN109061943A CN201810929018.8A CN201810929018A CN109061943A CN 109061943 A CN109061943 A CN 109061943A CN 201810929018 A CN201810929018 A CN 201810929018A CN 109061943 A CN109061943 A CN 109061943A
- Authority
- CN
- China
- Prior art keywords
- light
- strip
- backlight module
- scattering part
- dotted
- 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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0051—Diffusing sheet or layer
Abstract
This announcement provides a kind of backlight module, includes: light source module group, for issuing multiple dotted light；Multiple light-strips, each light-strip include an incidence surface and a light-emitting surface, and the dotted light is converted to Line of light by the incidence surface and dotted optical registration corresponding in the light source module group；And multiple scattering parts, be arranged on the light-emitting surface of the light-strip, for will beam projecting is to outside derived from the light-strip, wherein the multiple light-strip is arranged along a first direction parallel interval.
Description
Technical field
This announcement is related to a kind of backlight module, more particularly to a kind of backlight module for display.
Background technique
In recent years, since liquid crystal display (liquid crystal display, abbreviation LCD) has low power consumption, height
The advantages that brightness and good color saturation, therefore it is widely used in every Modern Electronic product, such as personal computer, number
Camera, smart phone, tablet computer, LCD TV etc..Liquid crystal display is assembled by multiple element, wherein backlight mould
Group is the key part and component for constituting liquid crystal display, influences power consumption, brightness and the color saturation of liquid crystal display entirety
Etc..
The backlight module of LCD is mainly to use the design of side entering type or straight-down negative to play reduce and use luminous two at present
The quantity of polar body (light-emitting diode, abbreviation LED), and then reach energy conservation and the effect of cost-saving.No matter however
It is the limit which kind of design all faces design, again will be difficult to by increasing mould group integral thickness and various optimization designs
The number of the LED used reduces to less.
Specifically, referring to Fig.1 and 2, Fig. 1 shows a kind of schematic diagram of existing side entrance back module 10, with
And Fig. 2 shows the sectional view of the A-A face line along Fig. 1.Side entrance back module 10 includes light guide plate 11 and LED light bar 12,
Wherein LED light bar 12 is formed and installing a column LED light 122 on substrate 121.The original of such side entrance back module 10
Reason is that light guide plate 11 is directed at setting with LED light bar 12, so that the light that LED light bar 12 issues is abided by after being incident to light guide plate 11
The total reflection condition of Snell's law (Snell's Law) carries out light transmitting, and after light encounters site, because destroying
Total reflection behavior and so that light is gone out light, play be converted into the Line of light that LED light bar 12 issues using light guide plate 11 whereby
Effect of planar light.However, the light as derived from through light guide plate 11, the direction of propagation is the direction of vertical light guide plate 11,
I.e. perpendicular to the direction of backlight module, it is therefore necessary to provide the light guide plate 11 and a certain number of LED light of collocation of whole face formula
122, it just may make the distribution of light derived from light guide plate 11 intensive enough.That is, this design is can not to reduce light guide plate
11 area and the quantity for reducing LED light 122.
In view of this, it is necessary to a kind of backlight module is proposed, to solve problems of the prior art.
Summary of the invention
To solve above-mentioned problem of the prior art, this announcement is designed to provide a kind of backlight mould for display
Group, by using side entering type enter light mode be incorporated in multiple light-strips being arranged in a row light-emitting surface setting can play light hair
The scattering part for dissipating effect, so can effectively reduce the area of light-strip and the quantity of the point light source used.
To reach above-mentioned purpose, this announcement provides a kind of backlight module, includes: light source module group, multiple dotted for issuing
Light；Multiple light-strips, each light-strip include an incidence surface and a light-emitting surface, in the incidence surface and the light source module group
The dotted light is converted to Line of light by corresponding dotted optical registration；And multiple scattering parts, it is arranged in the leaded light
On the light-emitting surface of item, for will beam projecting is to outside derived from the light-strip, wherein the multiple light-strip edge
The setting of one first direction parallel interval.
In one of them preferred embodiment of this announcement, the multiple scattering part on each light-strip is along one second
The setting of direction parallel arranged.
In one of them preferred embodiment of this announcement, the scattering part is the light-emitting surface of lenticule and the scattering part
For curved surface.
In one of them preferred embodiment of this announcement, the light source module group includes a pedestal and multiple point light sources, wherein institute
It states multiple point light sources to be arranged at intervals on the pedestal along the first direction, for issuing the multiple dotted light.
In one of them preferred embodiment of this announcement, the point light source is light-emitting diode.
In one of them preferred embodiment of this announcement, the incidence surface of the light-strip and one of them point light source
Alignment.
In one of them preferred embodiment of this announcement, the light-strip is identical as the material of the scattering part.
In one of them preferred embodiment of this announcement, the material of the light-strip and the scattering part includes poly- first
Base methyl acrylate (PMMA).
In one of them preferred embodiment of this announcement, the light-strip is with the multiple scattering part being arranged on
It is integrally formed.
In one of them preferred embodiment of this announcement, the incidence surface and the light-emitting surface of the light-strip are adjacent.
Compared to prior art, this announcement is by being incorporated in light-strip using the light design that enters of side entering type for backlight module
The scattering part that can play light disperse function, the relatively narrow Line of light that such light-strip was originally emitted, by dissipating is arranged in light-emitting surface
Wider Line of light can be transformed into after penetrating the disperse function of component.It designs whereby, this announcement is not needed using a large amount of point light source
And the light guide plate of whole face formula, and can be using the light-strip of a small amount of point light source collocation strip and spaced-apart relation, i.e.,
Can well-off brightness and equally distributed light, and then play the number for reducing the point light source used and reduce multiple leaded lights
The effect of gross area of item, thus it is effectively reduced production cost.
Detailed description of the invention
Fig. 1 shows a kind of schematic diagram of existing side entrance back module；
Fig. 2 shows the sectional view of the A-A face line along Fig. 1；
Fig. 3 shows a kind of schematic diagram of backlight module according to this announcement preferred embodiment；And
Fig. 4 shows the sectional view of the B-B face line along Fig. 3.
Specific embodiment
In order to which the above-mentioned and other purposes of this announcement, feature, advantage can be clearer and more comprehensible, it is excellent that spy is hereafter lifted into this announcement
Embodiment is selected, and cooperates institute's accompanying drawings, is described in detail below.
Referring to figure 3., a kind of schematic diagram of backlight module 20 according to this announcement preferred embodiment is shown.Backlight module
20 can be applied to various suitable displays, can be just for the well-off brightness of display and equally distributed light
Often display image.Backlight module 20 includes multiple light-strips 21, light source module group 22 and multiple scattering parts 23.Light-strip 21
For elongate in shape, and 21 parallel arranged of multiple light-strips is a row, i.e., is arranged along first direction (X-direction) parallel interval, and
Two adjacent light-strips 21 are separated by distance D.Preferably, every two adjacent light-strips 21 are separated by equidistant D.It is specific next
It says, the short side alignment same straight line and long side of multiple light-strips 21 are arranged in parallel with each other, and so working as has N number of light-strip 21,
N number of light-strip 21 can be with the matrix arrangement of 1x N.Light source module group 22 includes pedestal 221 and multiple point light sources 222, wherein more
A point light source 222 is arranged at intervals on pedestal 221 along first direction, for issuing multiple dotted light.Optionally, point light source 222
For light-emitting diode.Multiple scattering parts 23 are arranged on light-strip 21, it is preferable that multiple scattering parts 23 (Y in a second direction
Direction) parallel arranged setting.Preferably, first direction is perpendicular to second direction.
Referring to figure 4., the sectional view of the B-B face line along Fig. 3 is shown.The light comprising incidence surface S1 and out of light-strip 21
Face S2.Since the backlight module 20 of this announcement is to be designed using side entering type, therefore the incidence surface S1 of light-strip 21 and light-emitting surface S2 is adjacent
It connects.The incidence surface S1 of light-strip 21 one of them point light source 222 can be aligned with light source module group 22, what such point light source 222 issued
Dotted light can be converted into Line of light by the transmitting of light-strip 21.Also, going out for light-strip 21 can be arranged in scattering part 23
Being used on smooth surface S2 will be from beam projecting derived from light-strip 21 to outside.
As shown in figure 4, light-strip 21 is directed at setting with point light source 222, so that the light that point light source 222 issues is incident to and leads
Total reflection condition after striation 21 in accordance with Snell's law (Snell's Law) carries out light transmitting, and when light encounters net
After point, light is set to go out light because destroying total reflection behavior.Optionally, scattering part 23 is using micro- in the present embodiment
Lens are implemented, only not limited to this.It should be noted that scattering part 23 be arranged in light-strip 21 go out light at, and
The light-emitting surface S3 of scattering part 23 is curved surface, is designed whereby, the relatively narrow Line of light that light-strip 21 was originally emitted passes through scattering part
Wider Line of light can be transformed into after the disperse function of part 23, and the row by launching multiple light-strips 21 is arranged side by side
Line of light group is combined into planar light, does not need to provide that quantity is more and arrangement point light source 222 intensive enough so, i.e., it is convertible go out it is enough
Wide light emitting region.Based on this design principle, this announcement does not need the light guide plate using whole face formula, and can using strip and
The light-strip 21 of spaced-apart relation, material capable of reducing using is in comparison to be effectively reduced production cost.That is,
Compared to known side entrance back module, the backlight module 20 of this announcement can play the number for reducing the point light source 222 used
The effect of with the gross areas of multiple light-strips 21.Furthermore compared to known down straight aphototropism mode set, the backlight module of this announcement
20 can play the quantity of the printed circuit board of the number for the point light source 222 that reduction uses corresponding thereto.
Preferably, in order to save manufacturing time and simplify production procedure, light-strip 21 be arranged on it is multiple dissipate
Penetrating component 23 can be used integrally formed design.Also, identical material can be used in light-strip 21 and scattering part 23, such as poly-
Methyl methacrylate (PMMA).
In conclusion this announcement passes through the light-emitting surface for entering light design and being incorporated in light-strip by backlight module using side entering type
The scattering part that light disperse function can be played is set, and the relatively narrow Line of light that such light-strip was originally emitted passes through scattering part
Disperse function after can be transformed into wider Line of light.It designs whereby, this announcement is not needed using a large amount of point light source and whole
The light guide plate of face formula, and can be supplied using the light-strip of a small amount of point light source collocation strip and spaced-apart relation
Sufficient brightness and equally distributed light, and then play and reduce the total of the number of the point light source used and the multiple light-strips of reduction
The effect of area, thus it is effectively reduced production cost.
The above is only the preferred embodiments of this announcement, it is noted that for one of ordinary skill in the art, is not departing from this
Under the premise of disclosing principle, several improvements and modifications can also be made, these improvements and modifications also should be regarded as the protection of this announcement
Range.
Claims (10)
1. a kind of backlight module, characterized by comprising:
Light source module group, for issuing multiple dotted light；
Multiple light-strips, each light-strip include an incidence surface and a light-emitting surface, the incidence surface and the light source module group
In corresponding dotted optical registration, the dotted light is converted into Line of light；And
Multiple scattering parts are arranged on the light-emitting surface of the light-strip, for will derived from the light-strip light
It is emitted to outside, wherein the multiple light-strip is arranged along a first direction parallel interval.
2. backlight module as claimed in claim 1, which is characterized in that the multiple scattering part on each light-strip is along one
The setting of second direction parallel arranged.
3. the backlight module of liquid crystal display as claimed in claim 1, which is characterized in that the scattering part is lenticule and described
The light-emitting surface of scattering part is curved surface.
4. backlight module as claimed in claim 1, which is characterized in that the light source module group includes a pedestal and multiple point light sources,
Described in multiple point light sources be arranged at intervals on the pedestal along the first direction, for issuing the multiple dotted light.
5. backlight module as claimed in claim 4, which is characterized in that the point light source is light-emitting diode.
6. backlight module as claimed in claim 4, which is characterized in that the incidence surface of the light-strip and one of them point
Source alignment.
7. backlight module as claimed in claim 1, which is characterized in that the light-strip is identical as the material of the scattering part.
8. backlight module as claimed in claim 7, which is characterized in that the material of the light-strip and the scattering part includes
Polymethyl methacrylate.
9. backlight module as claimed in claim 1, which is characterized in that the light-strip and the multiple scattering part being arranged on
Part is integrally formed.
10. backlight module as claimed in claim 1, which is characterized in that the incidence surface of the light-strip and the light-emitting surface are adjacent
It connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810929018.8A CN109061943A (en) | 2018-08-15 | 2018-08-15 | Backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810929018.8A CN109061943A (en) | 2018-08-15 | 2018-08-15 | Backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109061943A true CN109061943A (en) | 2018-12-21 |
Family
ID=64686992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810929018.8A Pending CN109061943A (en) | 2018-08-15 | 2018-08-15 | Backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109061943A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927498A (en) * | 2012-06-01 | 2013-02-13 | 友达光电股份有限公司 | Backlight module |
| CN103822139A (en) * | 2014-01-20 | 2014-05-28 | 青岛海信电器股份有限公司 | Backlight source module and display device |
| CN105353449A (en) * | 2015-11-13 | 2016-02-24 | 重庆鑫翎创福光电科技股份有限公司 | PMMA light guide plate with double-sided dotted microstructures |
-
2018
- 2018-08-15 CN CN201810929018.8A patent/CN109061943A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927498A (en) * | 2012-06-01 | 2013-02-13 | 友达光电股份有限公司 | Backlight module |
| CN103822139A (en) * | 2014-01-20 | 2014-05-28 | 青岛海信电器股份有限公司 | Backlight source module and display device |
| CN105353449A (en) * | 2015-11-13 | 2016-02-24 | 重庆鑫翎创福光电科技股份有限公司 | PMMA light guide plate with double-sided dotted microstructures |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181221 |
|
| WD01 | Invention patent application deemed withdrawn after publication |