CN108020880A - Light guide plate and backlight module - Google Patents
Light guide plate and backlight module Download PDFInfo
- Publication number
- CN108020880A CN108020880A CN201711071665.1A CN201711071665A CN108020880A CN 108020880 A CN108020880 A CN 108020880A CN 201711071665 A CN201711071665 A CN 201711071665A CN 108020880 A CN108020880 A CN 108020880A
- Authority
- CN
- China
- Prior art keywords
- light
- groove
- isolation part
- emitting surface
- guide plate
- 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
- 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
-
- 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
-
- 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
- G02B6/0066—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 characterised by the light source being coupled to the light guide
- G02B6/0073—Light emitting diode [LED]
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Planar Illumination Modules (AREA)
Abstract
The present invention provides a kind of light guide plate and its backlight module, the light-emitting surface that the light guide plate includes an incidence surface, intersects with the light-emitting surface, it is characterised in that：The light-emitting surface has a plurality of groove being arranged in parallel, and, the first isolation part spaced with the groove, pars intermedia and the second isolation part, the light-emitting surface form multiple independent light-emitting zones after light beam is received, in the light-emitting surface；The backlight module is made of light guide plate, optical film, multiple LED light source groups for being sequentially distributed in the light-emitting zone.Wherein the first isolation part, pars intermedia, the second isolation part are to be arranged on the light-emitting surface with the arrangement mode of array, the light injected from incidence surface has different incident angles on the surface of V-groove, so as to change the propagation path of light, the directional light backlight module provided by the invention projected from light-emitting surface is formed to ensure light guide plate connection effect and overcome LED light string screen and subregion trace, the euphorosia sense that enhancing display device uses occur.
Description
Technical field
The present invention relates to a kind of backlight display field, and in particular to a kind of light guide plate and backlight module.
Background technology
VR display devices are also known as virtual reality display device, it is by virtual reality (Virtual Reality, abbreviation VR)
Technology is applied in display device, allows users to be immersed to Three-Dimensional Dynamic visual environment, and is realized with VR display devices man-machine
Interaction, experiences impression on the spot in person.In general, the lens area in VR display devices between display screen and human eye is opposite
It is bigger in the area of display screen, the image light exit direction of the display of display screen can be thus adjusted, weakens user and sees
Image be distorted, make the image that user sees more true to nature；But this reduce what the image seen of user was distorted
Method is premised on increasing the lens area in VR display devices, this can cause the volume of VR display devices to become to compare
Greatly, it is unfavorable for wearableization of VR display devices.The crosstalk of backlight by stages at the same time, can produce the brightness between different subregions
Influence, optimal state is, when a certain subregion is lighted, dark-state is all presented in the backlight of remaining subregion.
It is general design that partition type light guide plate sets jagged micro-structure on light-emitting surface in the prior art.On light guide plate
Micro-structure the total reflection condition of light is destroyed by different geometries.Light conducting plate body is divided according to predetermined scan pattern
For the strip subregion (such as A1-A3) of multiple vertical first LED light bars, light source group has multiple LED light sources, each group
LED light source corresponds to each subregion of light conducting plate body.Each light source group can respectively control and light or close.By it is above-mentioned can be with
The setting of a certain group's LED light source is individually lighted, has reached subregion and has lighted light guide plate, but crosstalk can occur in subregion intersection
Phenomenon.In addition also by identical site size, different site spacing control the degree of divergence of light type to realize light guide plate subregion
It has been shown that, but even if using the light guide plate containing special site, certain crosstalk is still remained between subregion, this is because light
Line enters after light conducting plate body there are certain dispersion angle, still can not effectively control the crosstalk of light.
The content of the invention
The technical problem to be solved in the invention has:It is to overcome to ensure that string screen and subregion occur in connection effect and LED light
Trace, realizes comfort and hommization that vision uses.
In order to realize above-mentioned task, a kind of light guide plate of the present invention and backlight module use following technical proposals：
A kind of light guide plate, including an incidence surface, the light-emitting surface that intersects with the light-emitting surface, it is characterised in that：The light-emitting surface has
The a plurality of groove being arranged in parallel, and, the first isolation part spaced with the groove, pars intermedia and the second isolation part are described
Light-emitting surface forms multiple independent light-emitting zones after light beam is received, in the light-emitting surface；First isolation part, the second isolation
Portion's width is L1, and the width of the pars intermedia is L2, and L1 and L2 meet 0.2mm≤| L1-L2 | the relational expression of≤0.5mm.
Further, the groove and the first isolation part, pars intermedia, the second isolation part are arranged on the arrangement mode of array
The light-emitting surface, and the orientation of any V-groove and the first isolation part, pars intermedia, the orientation phase of the second isolation part
It is mutually vertical.
Further, the groove is V-groove.
Further, V-groove apex angle α≤5 °.
Present invention also offers a kind of backlight module, including：
Light guide plate, the light-emitting surface have a plurality of groove being arranged in parallel, and, isolate with the groove spaced first
Portion, pars intermedia and the second isolation part, the light-emitting surface form multiple independent luminous zones after light beam is received, in the light-emitting surface
Domain；First isolation part, the second isolation part width are L1, and the width of the pars intermedia is L2, and L1 and L2 meet 0.2mm≤
| L1-L2 | the relational expression of≤0.5mm；
Optical film, including diffusion sheet (and the reflector plate below multiple independent light-emitting zones above light guide plate；
Light source group, arranged on incidence surface side, includes multiple LED light sources for being sequentially distributed in the light-emitting zone.
Further, the groove and the first isolation part, pars intermedia, the second isolation part are arranged on the arrangement mode of array
The light-emitting surface, and the orientation of any groove and the orientation of the first isolation part, pars intermedia, the second isolation part are mutually hung down
Directly.
Further, the groove is V-groove.
Further, V-groove apex angle α≤5 °.
Further, the LED light source spacing is identical or different.
Present invention also offers a kind of display device, including the backlight module described in any of the above item.
Compared with the existing technology, the beneficial effects of the invention are as follows：
1）The light-emitting surface of existing light guide plate or the groove of bottom surface are successive from the beginning to the end, therefore referred to as continous way groove.And this hair
The light-emitting surface of bright light guide plate or the groove of bottom surface are discontinuous from the beginning to the end, are formed by the interruption arrangement of numerous secondary slots, and these
The secondary slot at interval is arranged in a line successively, and after being separated among light guide plate, LED light line will not penetrate die-cut line, it is ensured that
The globality of light guide plate；
[2）Since the discontinuous groove of the light guide plate of the present invention forms wire by the interruption arrangement of numerous secondary slots, therefore still
The basic optical function of continous way groove is so maintained, ensureing after punching that light guide plate optics can meet that whole screen lights rear finished product can not
See the trace, comply fully with the requirement used.
Brief description of the drawings
Fig. 1 shines schematic diagram for light guide plate in the present invention.
Fig. 2 is the top view of backlight module in the present invention.
Fig. 3 is the side view of backlight module in the present invention.
Embodiment
To make the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.Obviously, described embodiment is the part of the embodiment of the present invention, rather than whole realities
Apply example.Based on described the embodiment of the present invention, those of ordinary skill in the art institute on the premise of without creative work
The every other embodiment obtained, belongs to the scope of protection of the invention.
As shown in Figure 1, a kind of light guide plate 10, including an incidence surface 11, the light-emitting surface that intersects with the light-emitting surface, the light-emitting surface
With a plurality of V-groove 16 being arranged in parallel, and, first isolation part 13 spaced with the V-groove 16, pars intermedia 14
With the second isolation part 15, light-emitting surface forms multiple independent light-emitting zones after light beam is received, in light-emitting surface；Fig. 2 is only one
Schematic diagram (3rd areas of a Fen Liao), the number of partitions of light guide plate 10 can be arbitrary in actual lamp bar.Wherein, the first isolation part
13rd, 15 width of the second isolation part is L1, and the width of pars intermedia 14 is L2, and L1 and L2 meet 0.2mm≤| L1-L2 |≤0.5mm
Relational expression.
16 and first isolation part 13 of V-groove, pars intermedia 14, the second isolation part 15 are to be arranged on to be somebody's turn to do with the arrangement mode of array
Light-emitting surface, and the orientation of any V-groove 16 and the arrangement of the first isolation part 13, pars intermedia 14, the second isolation part 15
Direction is mutually perpendicular to.
The first isolation part 13, pars intermedia 14, the second isolation part 15 of light guide plate 10 are sequentially distributed in light inputting end, middle part and tail
Portion, a plurality of interruption of V-groove 16 are arranged in wire, and discontinuous groove is discontinuous from the beginning to the end, is formed in structure and existing
There is the continous way groove of technology significantly different.
The material of light guide plate 10 can make poly- first methacrylate（Methacrylic Acid Copolymer）Or poly- carbon
Acid esters（Polycarbonate）.When manufacturing the light guide plate 10, the acquiescence of light guide plate 10 is carried out first with electron beam or laser
Processing, makes its strip protrusion correspond to the light-emitting surface of the light guide plate 10, then utilizes the mode one punching molding processed.Lead
After being separated among tabula rasa 10, light will not penetrate V-groove 16.To ensure, 10 optics of light guide plate can meet that whole screen is lighted after punching
Finished product can not see the trace afterwards, herein angle [alpha]≤5 °, ensure the interference of different zones light.
Since the interruption of V-groove 16 of the mould of the present invention is arranged in wire, it need to be only punched and can be achieved with by mould, mould
Tool, which carries out mode one-step punching, just can form a secondary slot, then interval punching successively, form multiple V-grooves at interval
16, the V-groove 16 at these intervals alinement type successively.
Fig. 2 and Fig. 3 are refer to, a kind of backlight module, it includes at least light guide plate 10, light source group 30, optical film 20, leads
The light-emitting surface that tabula rasa 10 includes an incidence surface 11, intersects with the light-emitting surface, light-emitting surface have a plurality of V-groove being arranged in parallel
16, and, first isolation part 13 spaced with the V-groove 16,14 and second isolation part 15 of pars intermedia, light-emitting surface are connecing
After receiving light beam, multiple independent light-emitting zone A1, A2 and A3 are formed in light-emitting surface；First isolation part 13, the second isolation part 15 are wide
Spend for L1, the width of pars intermedia 14 is L2, and L1 and L2 meet 0.2mm≤| L1-L2 | the relational expression of≤0.5mm.
16 and first isolation part 13 of V-groove, pars intermedia 14, the second isolation part 15 are to be arranged on to be somebody's turn to do with the arrangement mode of array
Light-emitting surface, and the orientation of any V-groove 16 and the arrangement of the first isolation part 13, pars intermedia 14, the second isolation part 15
Direction is mutually perpendicular to.
The light transmitting procedure provided by above-described embodiment, in light guide plate 10 provided in this embodiment, incidence surface
11 side is equipped with multiple V-grooves 16, and the opening portion of each V-groove 16 is connected with 16 bottom of V-groove by slope,
When light from the side of incidence surface 1111 by light guide plate 10 when, light can enter in each V-groove 16, and in V-type ditch
Multiple reflections occur for the slope of groove 16, and are emitted eventually through refraction from the side of light-emitting surface；Moreover, light-emitting surface is using punching
Mode is formed, spaced first isolation part 13 of V-groove 16,14 and second isolation part 15 of pars intermedia, the first isolation part 13,
Second isolation part, 15 width is L1, and the width of pars intermedia 14 is L2, and L1 and L2 meet 0.2mm≤| L1-L2 | the pass of≤0.5mm
It is formula.
Since there is different incident angles from the light that incidence surface is injected on the surface of V-groove, so as to change light
Propagation path, form the directional light projected from light-emitting surface, light-emitting uniformity improves, and LED light source spacing is identical or different, works as control
After LED processed lights order, it is possible to achieve bright show slinkingly of light guide plate subregion is shown.So that light can not only on the slope of V-groove 16
Generation reflects or multiple reflections, can also pass through the exit direction for the direction controlling light that V-groove 16 gradually tapers up；Wherein light
Source group 30 is sequentially distributed in the light-emitting surface comprising multiple LED light sources, and those LED light sources are optionally lighted, and is led this
Tabula rasa 10 is used for the backlight module of VR display devices, and backlight module has good directive property to the backlight that display screen provides, makes
The image emergent ray that display screen is shown is adjusted, without with lens in undue increase VR display devices relative to display screen
Area, you can reduce the image that user sees and be distorted, this can not only make user preferably experience VR display device bands
The feeling of immersion come, is additionally, since the area relative to display screen without lens in undue increase VR display devices, so certain
The volume of VR display devices is also reduced in degree, is easy to implement wearableization of VR display devices.
The embodiment of the present invention simply illustrates its embodiment, does not lie in and limits its technical solution.The skill of the industry
Art personnel can make some modifications under the inspiration of the present embodiment, therefore all equivalence changes done according to the scope of the claims of the present invention
Or modification, belong in scope of the patent claims of the present invention.
Claims (10)
1. a kind of light guide plate, including an incidence surface, the light-emitting surface that intersects with the light-emitting surface, it is characterised in that：The light extraction mask
There is a plurality of groove being arranged in parallel, and, the first isolation part spaced with the groove, pars intermedia and the second isolation part, institute
Light-emitting surface is stated after light beam is received, multiple independent light-emitting zones are formed in the light-emitting surface；First isolation part, second every
Be L1 from portion's width, the width of the pars intermedia is L2, and L1 and L2 meet 0.2mm≤| L1-L2 | the relational expression of≤0.5mm.
2. light guide plate according to claim 1, it is characterised in that：The groove and the first isolation part, pars intermedia, second every
It is that the light-emitting surface, and the orientation of any V-groove and the first isolation part, centre are arranged on the arrangement mode of array from portion
The orientation in portion, the second isolation part is mutually perpendicular to.
3. light guide plate according to claim 1, it is characterised in that the groove is V-groove.
4. according to the light guide plate described in right 3, it is characterised in that V-groove apex angle α≤5 °.
5. a kind of backlight module, including：
Light guide plate, the light-emitting surface have a plurality of groove being arranged in parallel, and, isolate with the groove spaced first
Portion, pars intermedia and the second isolation part, the light-emitting surface form multiple independent luminous zones after light beam is received, in the light-emitting surface
Domain；First isolation part, the second isolation part width are L1, and the width of the pars intermedia is L2, and L1 and L2 meet 0.2mm≤
| L1-L2 | the relational expression of≤0.5mm；
Optical film, including diffusion sheet (and the reflector plate below multiple independent light-emitting zones above light guide plate；
Light source group, arranged on incidence surface side, includes multiple LED light sources for being sequentially distributed in the light-emitting zone.
6. backlight module according to claim 5, it is characterised in that groove is isolated with the first isolation part, pars intermedia, second
Portion is to be arranged on the light-emitting surface, and the orientation of any groove and the first isolation part, pars intermedia, second with the arrangement mode of array
The orientation of isolation part is mutually perpendicular to.
7. backlight module according to claim 5, it is characterised in that the groove is V-groove.
8. according to the backlight module described in right 7, it is characterised in that V-groove apex angle α≤5 °.
9. backlight module according to claim 5, it is characterised in that the LED light source spacing is identical or different.
10. a kind of display device, it is characterised in that including claim 5-9 any one of them backlight modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711071665.1A CN108020880A (en) | 2017-11-03 | 2017-11-03 | Light guide plate and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711071665.1A CN108020880A (en) | 2017-11-03 | 2017-11-03 | Light guide plate and backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108020880A true CN108020880A (en) | 2018-05-11 |
Family
ID=62079674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711071665.1A Pending CN108020880A (en) | 2017-11-03 | 2017-11-03 | Light guide plate and backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108020880A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6123431A (en) * | 1997-03-19 | 2000-09-26 | Sanyo Electric Co., Ltd | Backlight apparatus and light guide plate |
| US20070058388A1 (en) * | 2005-09-15 | 2007-03-15 | Nec Corporation | Light source device and method for manufacturing the same, display device and method for manufacturing the same, and method for driving display device |
| CN1987530A (en) * | 2005-12-23 | 2007-06-27 | 群康科技(深圳)有限公司 | Light guide board and back light module using said light guide board |
| CN102121671A (en) * | 2010-01-12 | 2011-07-13 | 苏州向隆塑胶有限公司 | Flat-plate light guide plate structure and backlight module using same |
| CN103185244A (en) * | 2011-12-29 | 2013-07-03 | 扬升照明股份有限公司 | Light source module |
| CN103376494A (en) * | 2012-04-18 | 2013-10-30 | 昆山康佳电子有限公司 | Light guide plate for lateral LED TV |
| CN203658610U (en) * | 2013-12-07 | 2014-06-18 | 东莞市现代精工实业有限公司 | Light guide plate and mold for producing light guide plate |
| CN104133266A (en) * | 2014-08-20 | 2014-11-05 | 上海向隆电子科技有限公司 | Light guide plate with part of grooves |
-
2017
- 2017-11-03 CN CN201711071665.1A patent/CN108020880A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6123431A (en) * | 1997-03-19 | 2000-09-26 | Sanyo Electric Co., Ltd | Backlight apparatus and light guide plate |
| US20070058388A1 (en) * | 2005-09-15 | 2007-03-15 | Nec Corporation | Light source device and method for manufacturing the same, display device and method for manufacturing the same, and method for driving display device |
| CN1987530A (en) * | 2005-12-23 | 2007-06-27 | 群康科技(深圳)有限公司 | Light guide board and back light module using said light guide board |
| CN102121671A (en) * | 2010-01-12 | 2011-07-13 | 苏州向隆塑胶有限公司 | Flat-plate light guide plate structure and backlight module using same |
| CN103185244A (en) * | 2011-12-29 | 2013-07-03 | 扬升照明股份有限公司 | Light source module |
| CN103376494A (en) * | 2012-04-18 | 2013-10-30 | 昆山康佳电子有限公司 | Light guide plate for lateral LED TV |
| CN203658610U (en) * | 2013-12-07 | 2014-06-18 | 东莞市现代精工实业有限公司 | Light guide plate and mold for producing light guide plate |
| CN104133266A (en) * | 2014-08-20 | 2014-11-05 | 上海向隆电子科技有限公司 | Light guide plate with part of grooves |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9903996B2 (en) | Light guide plate display device | |
| CN100489615C (en) | Light guide plate and back-light lighting device | |
| CN103562618B (en) | Back lighting device and liquid crystal indicator | |
| CN109313349B (en) | Optical device and stereoscopic display method | |
| US8646960B2 (en) | Scanning backlight with slatless light guide | |
| EP2844908B1 (en) | Multi-beam light engine | |
| CN108431670A (en) | Surface features for being imaged directional backlight | |
| CN102392956A (en) | Surface light source device and stereoscopic display device | |
| CN104620041B (en) | Planar light source device and use the display device of this planar light source device | |
| CN102317683A (en) | Manufacturing method of light guide plate, light guide plate, backlight apparatus, illumination apparatus, and partition board apparatus | |
| CN205480504U (en) | Planar lighting device | |
| CN102563487A (en) | Vehicle light | |
| CN103901528B (en) | Planar light source device and its light guide plate | |
| CN103913796B (en) | Light guide plate, backlight module and transparent displayer | |
| CN110488533A (en) | Backlight module | |
| CN101688645A (en) | Method for manufacturing light guide plate, light guide plate, and light emitting advertising display using the light guide plate | |
| JP2008084544A (en) | Light guide plate, lighting system, and backlight for liquid crystal display | |
| CN101221322B (en) | Light redirecting film having varying optical elements | |
| CN102818187A (en) | Backlight module, display device and method for reducing hot spot phenomenon | |
| US7252426B2 (en) | Light guide device and backlight module using the same | |
| CN204026333U (en) | The two-sided light extracting LED backlight source module of side entering type | |
| CN209856982U (en) | Three-dimensional luminous automobile lighting device with dynamic visual effect | |
| CN108020880A (en) | Light guide plate and backlight module | |
| JP2011215320A (en) | Display device | |
| JP2002216530A (en) | Surface light source device, light guide for surface light source device and method for manufacturing the same |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180511 |