CN110018535A - A kind of light diffusing sheet of backlight - Google Patents
A kind of light diffusing sheet of backlight Download PDFInfo
- Publication number
- CN110018535A CN110018535A CN201910254227.1A CN201910254227A CN110018535A CN 110018535 A CN110018535 A CN 110018535A CN 201910254227 A CN201910254227 A CN 201910254227A CN 110018535 A CN110018535 A CN 110018535A
- Authority
- CN
- China
- Prior art keywords
- diffusing sheet
- light diffusing
- backlight
- light
- cone table
- 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
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The present invention relates to a kind of light diffusing sheet of backlight, the light diffusing sheet is identical, in the same size with multiple shapes positioned at panel trailing flank by panel, the lamp cave on the frustum top surface in the cone table that by display arrangement, is uniformly abound with and the frustum end face center portion for being located at the cone table；It is located at several first screw pilums being arranged to protrusion by one fixed spacing of holding of rear lateral portion；Several on rear side of being located at far from edge department are integrally formed to rear projection by the second screw pilum for keeping a fixed spacing to be arranged.It is found that the mountable lamp plate on rear side of light diffusing sheet, and the light source in lamp plate is placed in the lamp cave on frustum top surface, the light that light source issues projects more uniform sheen after cone table on front side of panel.And surrounding is not in apparent concealed wire, it can be achieved that splicing without shadow.Light diffusing sheet of the present invention is adapted in the backlight of large-scale presentation device, large lamp box and large area lighting facility.
Description
Technical field
The present invention relates to electro-optical technology fields, and in particular to a kind of light diffusing sheet of backlight.
Background technique
In actual life, backlight application and its extensively, such as: TFT-LCD(liquid crystal display), lamp box, illumination and its
Its special installation.Wherein lamp box is most widely used, as: X-ray see piece photophore, eyesight testing apparatus, flat lamp, light curtain,
Lamp, show window, counter, identification label, building decoration, lamp box advertisement, traffic sign, guiding plate, lamp house signboard, lamp box advertisement,
Guidance in display and demonstration, and military, facilities for transport and communication (such as: aircraft carrier, submarine, naval vessel, aircraft, high-speed rail, train, automobile)
Direction board etc..The uniformity of light is one of important indicator of backlight, and different application has different requirements, such as TFT-LCD(liquid crystal
Display screen) light is expanded to light technical requirement it is very high, it includes that haze value, light transmittance, refractive index, partial size, decomposition temperature, heap are close
Degree etc., makes dazzling incident light become the uniform sheen of affine human eye, these depend on light diffusing sheet to realize.
With the development of the global economy, constantly promoting under the new situation in Global Urbanization and smart city, light diffusion
The application of plate will more extensively.Therefore, there is an urgent need to develop the backlight presentation device of large area light emitting, as large area lamp box,
Large area light emitting wall and large area backlight show equipment and large-scale dynamic screen etc..The backlight of these large area light emittings is shown
Equipment be unable to do without backlight, it is especially desirable to a kind of backlight for being able to achieve no shadow splicing, to meet the market demand.
Currently, backlight mainly has optical light guiding plate of side backlight and direct-light-type backlight two major classes, these two types of backlights
Particular technique feature and superiority and inferiority be analyzed as follows:
First is that side-edge type backlight, is mainly made of light guide plate and light source, light source is mounted on light guide plate side, at light guide plate bottom
Portion is equipped with light guiding points made of engraving or printing.Due to guide-lighting distance limitation, it is applicable in the lesser product of light-emitting area, is usually used in the people
With the TFT-LCD of grade, small dimension lamp box, decoration painting, Window Display, plate lighting etc..Since the light source of side-edge type backlight is pacified
Mounted in light guide plate side, this body structure of light source occupies the certain space of light guide plate side, therefore, it is impossible to realize no shadow splicing.
Second is that direct-light-type backlight, is mainly made of astigmatism plate, light source and cabinet, astigmatism plate is mounted on cabinet front,
Light source is mounted on rear side of cabinet；Therefore, direct-light-type backlight has the advantages such as brightness is high, and light source controllability is strong, therefore, using pole
To be extensive, such as: high-end TFT-LCD, lamp box, guiding plate, show window；And illuminator and traffic lamps and lanterns etc..Since astigmatism plate is pacified
Mounted in cabinet front, light source is mounted on rear side of cabinet, and light source and front side portion have a biggish distance, therefore, direct-type backlight
Source is thicker；Meanwhile cabinet surrounding is lighttight box body wall, after being spliced into, serious shadow can be gone out between cabinet, also can not
It realizes and splices without shadow.
Summary of the invention
Place and existing defect in order to overcome the deficiencies of the prior art meet the market demand, and it is real that the present invention provides a kind of energy
It is existing it is seamless spliced, structure is simple, the light diffusing sheet of backlight easy for installation, lower-cost.
A kind of light diffusing sheet of the backlight of the present invention to overcome the shortcomings of existing technologies, the light diffusing sheet is by panel, position
In the multiple by the display cone tables that are uniformly abound with of arrangement and the frustum end face center portion for being located at the cone table of panel trailing flank
Lamp cave on frustum top surface；And: several positioned at rear lateral portion keep fixed spacing setting to pressing for raised band screw hole
First screw pilum；It is located at several the second screw bases being arranged to rear projection by one fixed spacing of holding of rear side far from edge department
Column is integrally formed.From techniques discussed above feature it is found that on rear side of light diffusing sheet mountable lamp plate, and by the light source in lamp plate
It is placed in the lamp cave on frustum top surface, the light that light source issues projects more uniform sheen after cone table on front side of panel.By
Multiple cone tables in panel trailing flank are the surrounding light without any blockage by display arrangement, the uniformly integral structure that is abound with
Component, therefore, the surrounding of light diffusing sheet are not in apparent concealed wire, it can be achieved that splicing without shadow.Light diffusion of the present invention
Plate is adapted in the backlight of large-scale presentation device, large lamp box and large area lighting facility.
The protruding end of first screw pilum described in light diffusing sheet as backlight of the present invention, the first screw pilum is set
There is screw hole；To reduce blackening caused by the first screw pilum, the first screw pilum is located at what the cone table was connected
Position, height of projection and the frustum either flush.
Second screw pilum described in light diffusing sheet as backlight of the present invention, the second screw pilum are equipped with copper post；
To reduce blackening caused by the first screw pilum, which is located between the cone table；To ensure that lamp plate is installed
Stationarity, height is slightly above the frustum top surface.
The further improvement of light diffusing sheet as backlight of the present invention is equipped on front side of panel to improve light-dispersing effect
Astigmatism line.
According to above-described astigmatism line, the shape of the astigmatism line be can be used as strip line；Blocky line can also be used；May be used also
Using particle line.
According to above-described astigmatism line, it can also be recessed structure which, which can be the structure of protrusion,.
The further improvement of light diffusing sheet as backlight of the present invention, to reduce light loss, in the frustum side of cone table
Face cloth is coated with reflective layer.
A kind of light diffusing sheet of backlight of the present invention, its advantages are showed themselves in that positioned at the multiple by old of panel trailing flank
The cone table that column are arranged, are uniformly abound with, the cone table can play the role of certain astigmatism；Meanwhile multiple cones of panel trailing flank
Stage body is the component of surrounding light without any blockage by display arrangement, the uniformly integral structure that is abound with；Therefore, light diffusing sheet
Surrounding is not in apparent concealed wire, it can be achieved that splicing without shadow.Therefore the light diffusing sheet of backlight of the present invention can install lamp plate；
The light that can be issued again to light source plays certain scattering process；Also it is able to achieve incompetent splicing；Simple with structure, easy for installation, system
Cause this low advantage.
Detailed description of the invention
Below according to attached drawing, the invention will be further described, and attached drawing for a better understanding of the invention, should not only become
Limitation of the present invention:
Fig. 1 is the trailing flank schematic diagram of the light diffusing sheet of backlight of the present invention；
Fig. 2 is the upper and lower side schematic diagram in Fig. 1 of the present invention；
Fig. 3 is present invention a-a diagrammatic cross-section as shown in Figure 1；
Fig. 4 is present invention b-b diagrammatic cross-section as shown in Figure 1；
Fig. 5 is a kind of rear side schematic diagram of application implementation scheme of backlight of the present invention；
Fig. 6 is present invention c-c diagrammatic cross-section as shown in Figure 5；
Fig. 7 is the rear side schematic diagram of another application implementation scheme of backlight of the present invention；
Fig. 8 is present invention d-d diagrammatic cross-section as shown in Figure 7.
In attached drawing mark explanation: 1-panel, 2-cone tables, 3-frustum top surfaces, 4-lamp caves, 5-frustum sides,
6-the first screw pilum, the 7-the second screw pilum, 8-astigmatism lines, 9-light source boards, 90-light sources, 9a-whole lamp plate,
9b-strip lamp plate.
Specific embodiment
Below with reference to the Detailed description of the invention in a kind of light diffusing sheet embodiment of backlight of the present invention, in the embodiment of the present invention
Technical solution be clearly and completely described.
Description in a kind of backlight module embodiment of the present invention to front side, rear side, surrounding, is with the view direction of attached drawing 1
For foundation.
A kind of light diffusing sheet embodiment of backlight of the present invention, as shown in Figures 1 to 4, the light diffusing sheet is by panel 1 and position
In multiple cone tables 2 by display arrangement, being uniformly abound with of 1 trailing flank of panel and positioned at 3 center of frustum top surface of cone table 2
Lamp cave 4 on the frustum top surface in portion；Several positioned at rear lateral portion keep fixed spacing setting to pressing for raised band screw hole
First screw pilum 6；Several second screws being arranged to rear projection by one fixed spacing of holding positioned at rear side far from edge department
Pilum 7 is integrally formed.The protruding end of first screw pilum 6 is equipped with screw hole；The light diffusing sheet is made of translucent material, this
Luminescent material uses (but being not limited to) high molecular material to pass through for raw material (such as: PC, PVC, PS, PMMA, PET, epoxy resin)
Shooting Technique is fabricated, and light diffuser material is added (such as: the light diffusion of light spread powder, calcium carbonate series to more demanding
Agent etc.).According to techniques discussed above feature, as shown in Fig. 5 to Fig. 8, the mountable lamp plate 9 on rear side of light diffusing sheet, and by lamp
Light source 90 in plate 9 is placed in the lamp cave 4 on frustum top surface, and the light that light source issues is penetrated on front side of panel 1 after cone table 2
More uniform sheen out.Since multiple cone tables 2 of 1 trailing flank of panel are the integral structures by display arrangement, being uniformly abound with,
The component of surrounding light without any blockage, therefore, the surrounding of light diffusing sheet are not in apparent concealed wire, it can be achieved that splicing without shadow.
In practical application, lamp plate 9 to be first mounted on to the rear side of light diffusing sheet, and fixed by the first screw pilum 6 via screw；It
The muti-piece light diffusing sheet splicing with lamp plate 9 is mounted on shell or in box unit afterwards, then light diffusing sheet will be installed
Shell or box unit are spliced into the backlight of the presentation device of large area light emitting, large lamp box and large area lighting facility.
The lamp plate 9 of light diffusing sheet trailing flank installation can be whole lamp plate 9a；It can also be strip lamp plate 9b.It is spread in light
It when whole lamp plate 9a is installed on rear side of plate, can be seen that from such as Fig. 5 to Fig. 6, the first screw pilum 6 is located at the connected portion of cone table 2
Position；In order to which whole lamp plate 9a can be installed steadily, height of projection is concordant with frustum top surface 3.Length is installed on rear side of light diffusing sheet
It when bar shaped lamp plate 9b, can be seen that from such as Fig. 7 to Fig. 8, since strip lamp plate 9b is corresponding each row or each 2 row of column cone table
Column installation；Therefore, above-described first screw pilum 6, which should be arranged and be pressed by each row or each column cone table 2, keeps certain
Spacing it is located at the connected position of cone table 2.
According to the light diffusing sheet embodiment of above-described backlight, to be easily installed, light-dispersing effect is improved, to backlight
Light diffusing sheet be further improved it is as follows.
For ensure backlight of the present invention light diffusing sheet installation strength, as shown in Fig. 1 to Fig. 3 and Fig. 5 to Fig. 6,
Second screw pilum 7 is equipped with copper post；To reduce blackening caused by the second screw pilum 7, the second screw of Ying Jiang pilum 7 is located at frustum
Between body 2；Due to needing installation lamp plate on rear side of light diffusing sheet, the height of projection of the second screw pilum 7 should be slightly above frustum
Top surface 3；And at least it is higher by the height of lamp plate.
To improve light-dispersing effect, as shown in Fig. 2 to Fig. 4 and Fig. 6, astigmatism line 8 is equipped on front side of panel 1；The astigmatism line 8
Shape can be used as strip line；Blocky line can also be used；Particle line also can be used.Meanwhile the astigmatism line 8 can be the knot of protrusion
Structure；It can also be recessed structure.
As shown in Fig. 1 to Fig. 3 and Fig. 5 to Fig. 6, to be coated with instead in 5 cloth of frustum side of cone table 2 to reduce light loss
Photosphere.
Above by the embodiment of light diffusing sheet of backlight, the present invention is described, and provided embodiment is only
As an example, being not intended to limit practical range of the invention.Those skilled in the art both know about, according to above
Specific implementation description can do various changes and modifications to the present invention, it is, therefore, to be understood that in addition to above-mentioned particular implementation,
The present invention can otherwise be implemented, and be not limited to described in description above.
Claims (7)
1. a kind of light diffusing sheet of backlight, the light diffusing sheet are made of translucent material；
It is characterized by: the light diffusing sheet is arranged uniformly by panel (1), positioned at the multiple of the panel (1) trailing flank by display
The cone table (2) being abound with and the lamp cave (4) on the frustum top surface of frustum top surface (3) central part of the cone table (2)；With
And: several positioned at rear lateral portion press the first screw pilum (6) for keeping a fixed spacing to be arranged to raised band screw hole；Position
In rear side far from edge department several to rear projection by keep a fixed spacing be arranged the second screw pilum (7) be integrally formed.
2. a kind of light diffusing sheet of backlight according to claim 2, it is characterised in that:
The first screw pilum (6) is located at the cone table (2) connected position, height of projection and the frustum top surface
(3) concordant.
3. a kind of light diffusing sheet of backlight according to claim 2, it is characterised in that:
The second screw pilum (7) is equipped with copper post；The second screw pilum (7) is located between the cone table (2), high
Degree is slightly above the frustum top surface (3).
4. a kind of backlight module according to claim 1, it is characterised in that:
Astigmatism line (8) are equipped on front side of the panel (1).
5. a kind of backlight module according to claim 4, it is characterised in that:
The shape of the astigmatism line (8) is strip line or blocky line or particle line.
6. a kind of backlight module according to claim 4, it is characterised in that:
The astigmatism line (8) is the structure or recessed structure of protrusion.
7. a kind of light diffusing sheet of backlight according to claim 1, it is characterised in that:
Frustum side (5) cloth of the cone table (2) is coated with reflective layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910254227.1A CN110018535A (en) | 2019-03-31 | 2019-03-31 | A kind of light diffusing sheet of backlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910254227.1A CN110018535A (en) | 2019-03-31 | 2019-03-31 | A kind of light diffusing sheet of backlight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110018535A true CN110018535A (en) | 2019-07-16 |
Family
ID=67190271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910254227.1A Pending CN110018535A (en) | 2019-03-31 | 2019-03-31 | A kind of light diffusing sheet of backlight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110018535A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1082915A (en) * | 1996-09-06 | 1998-03-31 | Omron Corp | Surface light source device and liquid crystal display device |
| JP2000098105A (en) * | 1998-09-18 | 2000-04-07 | Anritsu Corp | Diffusion plate and black light for liquid crystal display device using the diffusion plate |
| US20020024803A1 (en) * | 2000-08-31 | 2002-02-28 | Masaya Adachi | Plane-like lighting units and display equipment provided therewith |
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| KR20070016596A (en) * | 2005-08-04 | 2007-02-08 | 주식회사 나모텍 | Diffusion panel for liquid crystal display device and back light unit thereof |
| KR20070040012A (en) * | 2005-10-11 | 2007-04-16 | 희성전자 주식회사 | Direct type back-light unit for lcd |
| TW200837390A (en) * | 2007-03-03 | 2008-09-16 | Au Optronics Corp | Diffuser having optical structures |
| CN101641547A (en) * | 2007-03-22 | 2010-02-03 | 古河电气工业株式会社 | Light box |
| JP2010117707A (en) * | 2008-10-16 | 2010-05-27 | Asahi Kasei E-Materials Corp | Light diffusion plate and direct point-like light source backlight device |
| CN103017028A (en) * | 2012-12-03 | 2013-04-03 | 彩虹集团公司 | Light guide plate-free light-emitting diode (LED) backlight module |
| CN205746317U (en) * | 2016-04-18 | 2016-11-30 | 深圳Tcl新技术有限公司 | Down straight aphototropism mode set and straight-down negative display thereof |
| CN107422405A (en) * | 2017-09-25 | 2017-12-01 | 马瑞利汽车电子(广州)有限公司 | A kind of diffusion board structure and display backlight structure |
| CN206907406U (en) * | 2017-06-20 | 2018-01-19 | 北京宝丽兴源技术服务股份有限公司 | New waterproof lamp box |
-
2019
- 2019-03-31 CN CN201910254227.1A patent/CN110018535A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1082915A (en) * | 1996-09-06 | 1998-03-31 | Omron Corp | Surface light source device and liquid crystal display device |
| JP2000098105A (en) * | 1998-09-18 | 2000-04-07 | Anritsu Corp | Diffusion plate and black light for liquid crystal display device using the diffusion plate |
| US20020024803A1 (en) * | 2000-08-31 | 2002-02-28 | Masaya Adachi | Plane-like lighting units and display equipment provided therewith |
| KR20060087795A (en) * | 2005-01-31 | 2006-08-03 | 임성규 | Reflection plate for direct type back light unit |
| JP2006220778A (en) * | 2005-02-09 | 2006-08-24 | Sharp Corp | Backlight device, and display device equipped therewith |
| KR20070016596A (en) * | 2005-08-04 | 2007-02-08 | 주식회사 나모텍 | Diffusion panel for liquid crystal display device and back light unit thereof |
| KR20070040012A (en) * | 2005-10-11 | 2007-04-16 | 희성전자 주식회사 | Direct type back-light unit for lcd |
| TW200837390A (en) * | 2007-03-03 | 2008-09-16 | Au Optronics Corp | Diffuser having optical structures |
| CN101641547A (en) * | 2007-03-22 | 2010-02-03 | 古河电气工业株式会社 | Light box |
| JP2010117707A (en) * | 2008-10-16 | 2010-05-27 | Asahi Kasei E-Materials Corp | Light diffusion plate and direct point-like light source backlight device |
| CN103017028A (en) * | 2012-12-03 | 2013-04-03 | 彩虹集团公司 | Light guide plate-free light-emitting diode (LED) backlight module |
| CN205746317U (en) * | 2016-04-18 | 2016-11-30 | 深圳Tcl新技术有限公司 | Down straight aphototropism mode set and straight-down negative display thereof |
| CN206907406U (en) * | 2017-06-20 | 2018-01-19 | 北京宝丽兴源技术服务股份有限公司 | New waterproof lamp box |
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