CN107402475A - Direct type backlight module - Google Patents
Direct type backlight module Download PDFInfo
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- CN107402475A CN107402475A CN201710054099.7A CN201710054099A CN107402475A CN 107402475 A CN107402475 A CN 107402475A CN 201710054099 A CN201710054099 A CN 201710054099A CN 107402475 A CN107402475 A CN 107402475A
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- backlight module
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- 239000011521 glass Substances 0.000 claims abstract description 70
- 239000004744 fabric Substances 0.000 claims description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000006059 cover glass Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
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
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- 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
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- 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
- G02F1/133602—Direct backlight
- G02F1/133612—Electrical details
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention provides a direct type backlight module, which comprises a glass light guide plate, a conducting layer and at least one light emitting diode. The glass light guide plate comprises a first light-emitting surface and a light-entering surface which are opposite to each other. The conducting layer is directly formed on the light incident surface. The light emitting diode is directly and fixedly connected on the light incident surface and is electrically connected with the conducting layer, wherein the light emitting diode comprises a second light emitting surface, and the first light emitting surface and the second light emitting surface respectively face to two different directions. The direct type backlight module of the invention does not need to adopt a circuit board to arrange the light emitting diodes and electrically connect the light emitting diodes because the light emitting diodes and the conducting layer are directly formed on the light incident surface of the glass light guide plate, thereby effectively reducing the thickness of the backlight module. Moreover, because the light of the second light-emitting surface of the light-emitting diode enters the glass light guide plate through the reflecting plate, the light can be uniformly mixed due to a longer traveling route, and the generated surface light source can be more uniform.
Description
Technical field
The present invention projects down on a kind of direct type backlight module, an at least light extraction for espespecially a kind of light emitting diode
Direct type backlight module.
Background technology
Because liquid crystal does not light in itself, the function of backlight module is the face light for providing enough brightness Yu being evenly distributed
Source, liquid crystal display panel is normally shown image, therefore be for one of key part and component of liquid crystal display panel.Tradition
The light source of direct type backlight module is provided by cathode fluorescent tube, is limited yet with the thickness of cathode fluorescent tube,
Cathode fluorescent tube is set not met the thickness design requirement of liquid crystal display panel more and more thinner, therefore backlight module is gradual
Using multiple light emitting diodes as light source, to substitute cathode fluorescent tube.Although light emitting diode can be effectively reduced the back of the body
The thickness of optical module, but there is higher directive property, therefore the position of respective leds has higher brightness, and from
Then brightness is relatively low for the more remote position of light emitting diode, the uniformity of area source produced by so easily causing direct type backlight module
It is whard to control.Although there is the side light type back light module for developing the side that light emitting diode is arranged to light guide plate at present, to keep away
Exempt from that uniformity is bad, but with the gradual thickness more and more thinner of increase and light guide plate of display area of liquid crystal display panel, the back of the body
The uniformity of optical module is also difficult to control, and the light of light guide plate not easily collecting light emitting diode, and then reduces backlight module
Brightness.
The content of the invention
One of main object of the present invention is to provide a kind of direct type backlight module, to lift the uniformity of area source,
And reduce the thickness of backlight module.
For the above-mentioned purpose, a kind of direct type backlight module of one embodiment of the invention offer, including a glass light guide plate,
One conductive layer and at least one light emitting diode.Glass light guide plate enters light including one first exiting surface relative to each other and one
Face.Conductive layer is formed directly on incidence surface.Light emitting diode is directly fastened on incidence surface, and is electrically connected with conductive layer, its
Middle light emitting diode includes one second exiting surface, and the first exiting surface and the second exiting surface are respectively for two sides different from each other
To.
The direct type backlight module of a wherein embodiment of the invention separately includes a reflecting plate, enters light in face of glass light guide plate
Face is set, and light emitting diode is arranged between reflecting plate and glass light guide plate.
In the present invention wherein direct type backlight module of an embodiment, reflecting plate includes at least one catoptric arrangement, right
Light emitting diode is answered to set.
In the present invention wherein direct type backlight module of an embodiment, catoptric arrangement includes a projection, from reflection plate face
The surface of the incidence surface of glass light guide plate is protruded above.
In the present invention wherein direct type backlight module of an embodiment, catoptric arrangement separately includes multiple fine structures, if
It is placed on the upper surface of projection.
In the present invention wherein direct type backlight module of an embodiment, catoptric arrangement includes a groove, from reflection plate face
It is recessed to the surface of the incidence surface of glass light guide plate.
In the present invention wherein direct type backlight module of an embodiment, catoptric arrangement separately includes multiple fine structures, if
It is placed on the inner surface of groove.
In the present invention wherein direct type backlight module of an embodiment, catoptric arrangement includes multiple fine structures, sets
In reflecting plate on the surface of the incidence surface of glass light guide plate.
In the present invention wherein direct type backlight module of an embodiment, glass light guide plate separately includes multiple first micro- knots
Structure, it is formed on incidence surface, and the first micro-structural is set around light emitting diode and conductive layer.
In the present invention wherein direct type backlight module of an embodiment, one of neighbouring light emitting diode and conductive layer
The distribution density for the first micro-structural divided is more than the distribution density of the first micro-structural away from light emitting diode and conductive layer.
In the present invention wherein in the direct type backlight module of an embodiment, the first micro-structural not with light emitting diode and conduction
Layer overlaps.
In the present invention wherein direct type backlight module of an embodiment, glass light guide plate separately includes multiple second micro- knots
Structure, it is formed on the first exiting surface, and the second micro-structural overlaps with light emitting diode and conductive layer.
In the present invention wherein direct type backlight module of an embodiment, glass light guide plate separately includes multiple 3rd micro- knots
Structure, it is formed on the first exiting surface, the second micro-structural is arranged at the first exiting surface, and point of the second micro-structural with the 3rd micro-structural
Cloth density is more than the distribution density of the 3rd micro-structural.
In the present invention wherein direct type backlight module of an embodiment, each first micro-structural includes a point-like projection or one
Groove.
In the present invention wherein direct type backlight module of an embodiment, glass light guide plate separately includes multiple second micro- knots
Structure, it is formed on the first exiting surface, and the second micro-structural overlaps with light emitting diode and conductive layer.
In the present invention wherein direct type backlight module of an embodiment, glass light guide plate separately includes multiple 3rd micro- knots
Structure, it is formed on the first exiting surface and is set around the second micro-structural, and the distribution density of the second micro-structural is more than the 3rd micro- knot
The distribution density of structure.
In the present invention wherein direct type backlight module of an embodiment, light emitting diode separately includes one the 3rd exiting surface,
Incidence surface in face of glass light guide plate is set.
The beneficial effects of the present invention are direct type backlight module of the invention is direct with conductive layer due to light emitting diode
It is formed on the incidence surface of glass light guide plate, therefore is not required to set light emitting diode with electrically connecting light-emitting diodes using circuit board
Pipe, therefore can effectively reduce the thickness of backlight module.Also, because the light of the second exiting surface of light emitting diode is by anti-
Penetrate plate and just enter glass light guide plate, glass light guide plate, light of the invention are emitted directly toward compared to by the light of light emitting diode
Because there is longer course, therefore there can be more uniform mixing so that caused area source can be more uniform.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only
Some embodiments of the present invention, for those of ordinary skill in the art, without having to pay creative labor, also
Other accompanying drawings can be obtained according to these accompanying drawings.
Fig. 1 is the diagrammatic cross-section of the direct type backlight module of first embodiment of the invention.
Fig. 2 is the glass light guide plate of first embodiment of the invention and the light emitting diode being arranged on and conductive layer
Schematic top plan view.
Fig. 3 is the diagrammatic cross-section of the catoptric arrangement of the first alternate embodiment of first embodiment of the invention.
Fig. 4 is the diagrammatic cross-section of the catoptric arrangement of the second alternate embodiment of first embodiment of the invention.
Fig. 5 is the diagrammatic cross-section of the first micro-structural of the 3rd alternate embodiment of first embodiment of the invention.
Fig. 6 is the diagrammatic cross-section of the direct type backlight module of second embodiment of the invention.
Fig. 7 is the diagrammatic cross-section of the direct type backlight module of third embodiment of the invention.
Fig. 8 is the diagrammatic cross-section of the direct type backlight module of fourth embodiment of the invention.
Drawing reference numeral：
100th, the glass light guide plate of 200,300,400 backlight module 102,202,302,402
102a the first exiting surface 102b incidence surfaces
The conductive layer of 102S, 102S ' first micro-structural 104
The light emitting diode of 104a wires 106
The exiting surfaces of the second exiting surfaces of 106a 106b the 3rd
108 reflecting plate 108R, 108R ', 108R " catoptric arrangements
108F, 108F ', the micro-structural of 108F " fine structures 202S, 402Sa second
The micro-structural P1 Part I of 302S, 402Sb the 3rd
P2 Part II Z upright projections direction
Embodiment
The present invention is further understood that to enable to be familiar with those skilled in the art, hereafter spy enumerates this
Several preferred embodiments of invention, and coordinate institute's accompanying drawings, describe the constitution content of the present invention in detail.For convenience of explanation, originally
The schema of invention is only to illustrate to be easier to understand the present invention, and its detailed ratio can be adjusted according to the demand of design.
Fig. 1 is refer to, Fig. 1 is the diagrammatic cross-section of the direct type backlight module of first embodiment of the invention.Such as Fig. 1 institutes
Show, the present embodiment provides bottom-lighting type back light module 100, including a glass light guide plate 102, a conductive layer 104 and at least one
Individual light emitting diode 106.Glass light guide plate 102 may include one first exiting surface 102a and an incidence surface relative to each other
102b.Conductive layer 104 is formed directly on incidence surface 102b, and light emitting diode 106 can be directly fastened to incidence surface 102b
On, and electrically connected with conductive layer 104.Light emitting diode 106 may include one second exiting surface 106a, make light emitting diode 106
Light can at least project from the second exiting surface 106a.First exiting surface 102a and the second exiting surface 106a respectively for two each other not
With direction, e.g. opposite direction, therefore the light that light emitting diode 106 is projected from the second exiting surface 106a is via reflection
And enter glass light guide plate 102 from incidence surface 102b, and by the guiding of glass light guide plate 102, penetrated in the first exiting surface 102a
Go out.Thereby, the first exiting surface 102a of glass light guide plate 102 can make backlight module 100 towards liquid crystal display panel (not shown)
The light projected from the first exiting surface 102a can be used as liquid crystal display panel display picture.Due to 104 direct shape of conductive layer
Into on the incidence surface 102b of glass light guide plate 102, and light emitting diode 106 be directly fastened to glass light guide plate 102 enter light
On the 102b of face, therefore it is not required to set light emitting diode 106 with electrically connecting light emitting diode 106 using circuit board, therefore the back of the body can be reduced
The thickness of optical module 100.
For make can by reflection and upward from the light of the second exiting surface 106a of light emitting diode 106 injection, the present embodiment
Backlight module 100 can separately include a reflecting plate 108, the incidence surface 102b in face of glass light guide plate 102 is set, and light-emitting diodes
Pipe 106 is arranged between reflecting plate 108 and glass light guide plate 102, and making can be by anti-from the light that the second exiting surface 106a is projected
Plate 108 is penetrated to reflect and inject towards incidence surface 102b.For example, the second exiting surface 106a of light emitting diode 106 can be faced anti-
Plate 108 is penetrated to set, and reflecting plate 108 can cover glass light guide plate 102 whole incidence surface 102b, make the second exiting surface 106a's
Light can completely reflected plate 108 surface reflection, and then directive glass light guide plate 102.Due to the second exiting surface 106a's
Light is just to enter glass light guide plate 102 by reflecting plate 108, therefore is emitted directly toward glass compared to by the light of light emitting diode
Glass light guide plate, the light of the present embodiment can have more uniform mixing because there is longer course, make backlight module 100
The area source projected from the first exiting surface 102a can be more uniform.It is preferred that reflecting plate 108 can separately include an at least catoptric arrangement
108R, respective leds 106 are set respectively, and catoptric arrangement 108R can be used for scattering the light of light emitting diode 106
To the incidence surface 102b for being not provided with light emitting diode 106, glass is injected with the light for fully projecting light emitting diode 106
Light guide plate 102, and reduce fiber-loss.In the present embodiment, backlight module 100 may include multiple light emitting diodes 106, and instead
Penetrating plate 108 may include multiple catoptric arrangement 108R, corresponds to a light emitting diode 106 respectively and sets.Each catoptric arrangement 108R can be wrapped
A projection is included, from reflecting plate 108 in face of the incidence surface 102b of glass light guide plate 102 surface protrusion.Projection can be taper, and point
The center of the corresponding each light emitting diode 106 in end so that the light projected from the second exiting surface 106a can be by the side of taper projection
Face is reflected, and then enters glass light guide plate 102 from the incidence surface 102b for being not provided with light emitting diode 106.The upper surface of projection
It is not limited to above-mentioned, also can is circular arc or other geometries.Furthermore, the alternative another bags of each catoptric arrangement 108R
Multiple fine structure 108F are included, are arranged on the upper surface of projection, to scatter the light of light emitting diode 106, to produce mist
Change effect, and improve the uniformity of the area source of backlight module 100.Fine structure 108F width is less than the width of projection, makes
Multiple fine structure 108F can be set in the upper surface of projection.Fine structure 108F may be, for example, from the trickle of projection upper surface protrusion
Projection or from the recessed fine recesses in projection upper surface, and the shape of trickle projection or fine recesses may be, for example, taper, circular arc
Shape or other geometries.In addition, backlight module can separately include a housing (not shown), to accommodating glass light guide plate 102 with
Reflecting plate 108, and housing can be used to the interval fixed between glass light guide plate 102 and reflecting plate 108 so that light emitting diode
106 from the light that the second exiting surface 106b is projected by can be by reflecting plate 108 towards being not provided with light-emitting diodes after this interval
The incidence surface 106b of pipe 106 advances, without because of interval too small and by the stop of light emitting diode 106.
Please further refer to Fig. 2, and in the lump with reference to figure 1.Fig. 2 is glass light guide plate and the setting of first embodiment of the invention
Light emitting diode thereon and the schematic top plan view of conductive layer.As shown in Figures 1 and 2, conductive layer 104 may include a plurality of lead
Line 104a, light emitting diode 106 is electrically connected into control element (not shown).Conductive layer 104 preferably can be by metal material
Formed, to reduce the resistance value that light emitting diode 106 is connected between control element, but the invention is not restricted to this, conductive layer
104 can also be formed by transparent conductive material.Light emitting diode 106 can with array way or other arrangement mode scattering devices in
On incidence surface 102b, and it can be electrically connected with wire 104a by conducting resinl or be electrically connected by routing mode with wire 104a, and
Light emitting diode 106 each individually by two wire 104a can be electrically connected to control element or by wire 104a with parallel or
The mode of series connection is electrically connected to each other, and is further connected to control element by weld pad or flexible circuit board.Light emitting diode 106
Structures shape light emitting diode 106 be to be attached on wire 104a also or to be directly attached on incidence surface 102b.For example,
The connection pad of the positive and negative electrode of light emitting diode 106 can be located at the surfaces of the second exiting surface 106a corresponding thereto respectively, therefore luminous
One electrode directly can be fixed on a wire 104a and be connected electrically by conducting resinl by diode 106, and another electrode
It can then be electrically connected by routing with another wire 104a, or the connection pad of the positive and negative electrode of light emitting diode 106 is respectively positioned on second
Exiting surface 106a, therefore light emitting diode 106 can be directly fastened on incidence surface 102b, and divided both positive and negative polarity connection pad by routing
Do not electrically connected with two wire 104a, but the present invention is not limited thereto.In addition, the light emitting diode 106 of the present embodiment and it is unlimited only
Light is projected from the second exiting surface 106a, light emitting diode 106 is alternative separately to include one the 3rd exiting surface 106b, in face of glass
The incidence surface 102b of light guide plate 102 is set.In another alternate embodiment, other any sides of light emitting diode 106 or institute
It also can be exiting surface to have side.
In the present embodiment, glass light guide plate 102 can separately include multiple first micro-structural 102S, be formed at incidence surface 102b
On, and set around light emitting diode 106 and conductive layer 104, the first micro-structural 102S is can be used to that glass leaded light will be injected
The light of plate 102 is scattered and spread, to produce atomizing effect.Thereby, fully the light of neighbouring light emitting diode 106 can be expanded
Dissipate, to homogenize area source caused by backlight module 100.It is preferred that neighbouring light emitting diode 106 and conductive layer 104
First micro-structural 102S of part distribution density is more than another part away from light emitting diode 106 and conductive layer 104
The first micro-structural 102S distribution density.In other words, the first micro-structural 102S can divide into Part I P1 and second
Point P2, Part I P1 be arranged between Part II P2 and light emitting diode 106 and Part II P2 and conductive layer 104 it
Between, and be smaller than in Part II P2 wantonly two of wantonly two the first adjacent micro-structural 102S in Part I P1 are adjacent
First micro-structural 102S spacing.Because light emitting diode 106 and conductive layer 104 are opaque element, therefore can shaded portions
Light injects incidence surface 102b, and forms lightproof area.The first micro-structural 102S's that the present embodiment passes through neighbouring lightproof area
The distribution density that distribution density is more than the first micro-structural 102S away from lightproof area can make the neighbouring hair on the Z of upright projection direction
The light of optical diode 106 and conductive layer 104 has compared with multiple scattering, thereby respective leds 106 and the first of conductive layer 104
Light luminance emitted by exiting surface 102a is close to the first exiting surface 102a away from light emitting diode 106 with conductive layer 104
Light luminance, further to homogenize area source caused by backlight module 100.For example, each first micro-structural 102S
It may include a point-like projection, and point-like projection is formed by net-point printing, but not limited to this.In addition, the first micro-structural 102S
Do not overlapped on the Z of upright projection direction with light emitting diode 106 and conductive layer 104 preferably, to avoid light emitting diode 106
It is formed at conductive layer 104 on rough first micro-structural 102S, can thereby prevents the affixed bad of light emitting diode 106
And conductive layer 104 produces the problem of peeling off and produced.
What deserves to be explained is in the backlight module of the present embodiment, by glass light guide plate 102 is made up of glass, because
This not only itself has good light transmittance, and compared to the light guide plate formed by transparent plastic, glass light guide plate 102
When carrying out net-point printing than less likely there is the problem of producing scratch, to ensure still have being formed after the first micro-structural 102S
There is superior light transmittance.Also, because glass has preferable deflection compared to plastics and has less shape to temperature change
Become characteristic, therefore the sustainable conductive layer 104 being directly arranged at thereon of glass light guide plate 102 and light emitting diode 106, to avoid
Produce bending or deformation.
Fig. 3 is refer to, Fig. 3 is the section signal of the catoptric arrangement of the first alternate embodiment of first embodiment of the invention
Figure.As shown in figure 3, the catoptric arrangement 108R ' of this alternate embodiment may include groove, to substitute projection, and groove is from reflecting plate
108 is recessed in face of the incidence surface 102b of glass light guide plate 102 surface.Catoptric arrangement 108R ' is also alternative separately including multiple
Fine structure 108F ', is arranged on the inner surface of groove.
Fig. 4 is refer to, Fig. 4 is the section signal of the catoptric arrangement of the second alternate embodiment of first embodiment of the invention
Figure.As shown in figure 4, the catoptric arrangement 108R " of this alternate embodiment can only include multiple fine structure 108F ", and do not include convex
Block and groove, and fine structure 108F " is directly arranged at table of the reflecting plate 108 in face of the incidence surface 102b of glass light guide plate 102
On face.
Fig. 5 is refer to, Fig. 5 is the section signal of the first micro-structural of the 3rd alternate embodiment of first embodiment of the invention
Figure.As shown in figure 5, each first micro-structural 102S ' of this alternate embodiment also may include a groove.
Illustrate below for different embodiments of the invention, and to simplify explanation, illustrate below mainly for each
Embodiment difference is described in detail, and no longer something in common is repeated.It is in addition, identical in various embodiments of the present invention
Element indicated with identical label, in favor of being checked one against another between each embodiment.
Fig. 6 is refer to, Fig. 6 is the diagrammatic cross-section of the direct type backlight module of second embodiment of the invention.Such as Fig. 6 institutes
Show, compared to first embodiment, the glass light guide plate 202 for the direct type backlight module 200 that the present embodiment is provided is separately including more
Individual second micro-structural 202S, be formed on the first exiting surface 102a, and the second micro-structural 202S on the Z of upright projection direction with hair
Optical diode 106 and conductive layer 104 overlap.Because the second micro-structural 202S of the present embodiment can be implemented with above-mentioned first
First micro-structural 102S of example or its any alternate embodiment is identical, therefore not described here any more.
Fig. 7 is refer to, Fig. 7 is the diagrammatic cross-section of the direct type backlight module of third embodiment of the invention.Such as Fig. 7 institutes
Show, compared to second embodiment, the glass light guide plate 302 in the direct type backlight module 300 that the present embodiment is provided can be wrapped separately
Multiple 3rd micro-structural 302S are included, are formed on the first exiting surface 102a.Second micro-structural 202S and the 3rd micro-structural 302S is set
The first exiting surface 102a is placed in, and the second micro-structural 202S distribution density is more than the 3rd micro-structural 302S distribution density.Change
Yan Zhi, the wantonly two adjacent second micro-structural 202Ss' nearer with conductive layer 104 apart from light emitting diode 106 is smaller than distance
Wantonly two adjacent threeth micro-structural 302Ss of the light emitting diode 106 with conductive layer 104 farther out spacing.Due to the of the present embodiment
Three micro-structural 302S can be identical with the first micro-structural 102S of above-mentioned first embodiment or its any alternate embodiment, therefore herein
Seldom repeat.
Fig. 8 is refer to, Fig. 8 is the diagrammatic cross-section of the direct type backlight module of fourth embodiment of the invention.Such as Fig. 8 institutes
Show, compared to first embodiment, the glass light guide plate 402 in the direct type backlight module 400 that the present embodiment is provided does not wrap
The first micro-structural is included, and may include multiple second micro-structural 402Sa, is formed on the first exiting surface 102a, and the second micro-structural
402Sa overlaps with light emitting diode 106 and conductive layer 104.Also, the glass light guide plate 402 of the present embodiment may be selected
Property separately includes multiple 3rd micro-structural 402Sb, is formed on the first exiting surface 102a.Second micro-structural 402Sa and the 3rd micro- knot
Structure 402Sb is arranged at the first exiting surface 102a, and the second micro-structural 402Sa distribution density is more than the 3rd micro-structural 402Sb's
Distribution density.In other words, apart from the wantonly two adjacent second micro-structural 402Sas' nearer with conductive layer 104 of light emitting diode 106
It is smaller than the spacing apart from wantonly two adjacent threeth micro-structural 402Sbs of the light emitting diode 106 with conductive layer 104 farther out.By
In the present embodiment second and the 3rd micro-structural 402Sa, 402Sb can be with above-mentioned first embodiment or its any alternate embodiment
First micro-structural is identical, therefore not described here any more.
In summary, in the direct type backlight module of the present invention, because light emitting diode and conductive layer are formed directly into
On the incidence surface of glass light guide plate, therefore it is not required to set light emitting diode with electrically connecting light emitting diode using circuit board, therefore can
Effectively reduce the thickness of backlight module.Also, because the light of the second exiting surface of light emitting diode is by reflecting plate
Into glass light guide plate, glass light guide plate is emitted directly toward compared to by the light of light emitting diode, light of the invention because have compared with
Long course, therefore can have more uniform mixing so that caused area source can be more uniform.
The foregoing is only presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, it should all belong to the covering scope of the present invention.
Claims (17)
- A kind of 1. direct type backlight module, it is characterised in that including：One glass light guide plate, including one first exiting surface relative to each other and an incidence surface；One conductive layer, it is formed directly on the incidence surface；AndAt least one light emitting diode, it is directly fastened on the incidence surface, and is electrically connected with the conductive layer, wherein the light-emitting diodes Pipe includes one second exiting surface, and first exiting surface and second exiting surface are respectively for two different directions from each other.
- 2. direct type backlight module as claimed in claim 1, it is characterised in that separately include a reflecting plate, led in face of the glass The incidence surface of tabula rasa is set, and the light emitting diode is arranged between the reflecting plate and the glass light guide plate.
- 3. direct type backlight module as claimed in claim 2, it is characterised in that the reflecting plate includes at least one reflection and tied Structure, to should light emitting diode set.
- 4. direct type backlight module as claimed in claim 3, it is characterised in that the catoptric arrangement includes a projection, anti-from this Plate face is penetrated to protrude above the surface of the incidence surface of the glass light guide plate.
- 5. direct type backlight module as claimed in claim 4, it is characterised in that the catoptric arrangement separately includes multiple trickle knots Structure, it is arranged on the upper surface of the projection.
- 6. direct type backlight module as claimed in claim 3, it is characterised in that the catoptric arrangement includes a groove, anti-from this The surface that plate face is penetrated to the incidence surface of the glass light guide plate is recessed.
- 7. direct type backlight module as claimed in claim 6, it is characterised in that the catoptric arrangement separately includes multiple trickle knots Structure, it is arranged on the inner surface of the groove.
- 8. direct type backlight module as claimed in claim 3, it is characterised in that the catoptric arrangement includes multiple fine structures, The reflecting plate is arranged on the surface of the incidence surface of the glass light guide plate.
- 9. direct type backlight module as claimed in claim 1, it is characterised in that it is micro- that the glass light guide plate separately includes multiple first Structure, it is formed on the incidence surface, and the plurality of first micro-structural is set around the light emitting diode and the conductive layer.
- 10. direct type backlight module as claimed in claim 9, it is characterised in that the neighbouring light emitting diode and the conduction The distribution density of the plurality of first micro-structural of a part for layer is more than another away from the light emitting diode and the conductive layer The distribution density of partial the plurality of first micro-structural.
- 11. direct type backlight module as claimed in claim 9, it is characterised in that the plurality of first micro-structural is not luminous with this Diode and the conductive layer overlap.
- 12. direct type backlight module as claimed in claim 9, it is characterised in that the glass light guide plate separately includes multiple second Micro-structural, it is formed on first exiting surface, and the plurality of second micro-structural is overlapping with the light emitting diode and the conductive layer Set.
- 13. direct type backlight module as claimed in claim 12, it is characterised in that the glass light guide plate separately includes multiple three Micro-structural, it is formed on first exiting surface, the plurality of second micro-structural and the plurality of 3rd micro-structural are arranged at this and first gone out Smooth surface, and the distribution density of the plurality of second micro-structural is more than the distribution density of the plurality of 3rd micro-structural.
- 14. direct type backlight module as claimed in claim 9, it is characterised in that respectively it is convex to include a point-like for first micro-structural Block or a groove.
- 15. direct type backlight module as claimed in claim 1, it is characterised in that the glass light guide plate separately includes multiple second Micro-structural, it is formed on first exiting surface, and the plurality of second micro-structural is overlapping with the light emitting diode and the conductive layer Set.
- 16. direct type backlight module as claimed in claim 15, it is characterised in that the glass light guide plate separately includes multiple three Micro-structural, it is formed on first exiting surface and is set around the plurality of second micro-structural, and point of the plurality of second micro-structural Cloth density is more than the distribution density of the plurality of 3rd micro-structural.
- 17. direct type backlight module as claimed in claim 1, it is characterised in that the light emitting diode separately goes out including one the 3rd Smooth surface, the incidence surface in face of the glass light guide plate are set.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105115885A TWI566016B (en) | 2016-05-20 | 2016-05-20 | Direct-type blacklight module |
| TW105115885 | 2016-05-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107402475A true CN107402475A (en) | 2017-11-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710054099.7A Pending CN107402475A (en) | 2016-05-20 | 2017-01-24 | Direct type backlight module |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107402475A (en) |
| TW (1) | TWI566016B (en) |
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| CN110908183A (en) * | 2019-11-12 | 2020-03-24 | 惠州市华星光电技术有限公司 | Display device |
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| CN112437894A (en) * | 2018-03-09 | 2021-03-02 | 奥普托维特有限公司 | Lighting device |
| CN114171660A (en) * | 2021-07-13 | 2022-03-11 | 友达光电股份有限公司 | Light-emitting panel |
| US11422344B2 (en) | 2018-01-14 | 2022-08-23 | Optovate Limited | Illumination apparatus |
| US11450649B2 (en) | 2019-10-03 | 2022-09-20 | Reald Spark, Llc | Illumination apparatus comprising passive optical nanostructures |
| US11573437B2 (en) | 2019-07-02 | 2023-02-07 | Reald Spark, Llc | Directional display apparatus |
| US11629847B2 (en) | 2010-10-21 | 2023-04-18 | Optovate Limited | Illumination apparatus |
| US11652195B2 (en) | 2019-10-03 | 2023-05-16 | Reald Spark, Llc | Illumination apparatus comprising passive optical nanostructures |
| US11656398B2 (en) | 2020-02-20 | 2023-05-23 | Reald Spark, Llc | Illumination and display apparatus |
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Also Published As
| Publication number | Publication date |
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| TWI566016B (en) | 2017-01-11 |
| TW201741742A (en) | 2017-12-01 |
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