CN202229079U - Light guide plate and backlight module - Google Patents
Light guide plate and backlight module Download PDFInfo
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- CN202229079U CN202229079U CN2011203360405U CN201120336040U CN202229079U CN 202229079 U CN202229079 U CN 202229079U CN 2011203360405 U CN2011203360405 U CN 2011203360405U CN 201120336040 U CN201120336040 U CN 201120336040U CN 202229079 U CN202229079 U CN 202229079U
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- 238000007639 printing Methods 0.000 claims description 5
- 241000254158 Lampyridae Species 0.000 abstract description 2
- 235000009537 plain noodles Nutrition 0.000 abstract 5
- 238000009792 diffusion process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 24
- 238000012545 processing Methods 0.000 description 18
- 230000000694 effects Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model provides a light guide plate, including going into the plain noodles, with go into the crossing plain noodles of plain noodles and with go out the relative bottom surface of plain noodles be provided with the site on the bottom surface with the edge of the crossing department of income plain noodles is provided with the mixed light site of two rows at least mix the light site with be provided with between the site and stay the white region. The utility model also provides a backlight module, including light source and the aforesaid the light guide plate. The light guide plate provided by the utility model solves the problem of firefly (hotspot) by arranging the mixed light dots at the edge of the light incident side on the bottom surface of the light guide plate and increasing the light diffusion angle, has no light energy loss, lower cost and strong applicability; the utility model provides a backlight module, owing to used the aforesaid the light guide plate, solved the hotspot problem, effectual moreover, with low costs, the suitability is strong.
Description
Technical field
The utility model relates to field of display devices, more specifically, relates to a kind of LGP and a kind of module backlight.
Background technology
Along with development of television; The number of the LED in the module backlight (light emitting diode) lamp is fewer and feweri, and this just possibly will produce firefly (hotspot) phenomenon, and this is a problem of being paid close attention to very much always; This not only can influence the brightness of display screen, also can directly influence its visual effect.
In the existing module backlight, owing to pursue thin-walled, common thin-walled television set all is the module backlight that adopts the side light inlet.
Because the light angle that the LED lamp sends is 120 degree, the scope that the light of each LED lamp arrives is certain; Under the mode of side light inlet; As shown in Figure 1; The zone that the light of a plurality of LED lamps of incident side can both arrive will form the clear zone; And the zone that the light of less relatively LED lamp can arrive will form the dark space, because clear zone and dark space replace each other, bright dark bright dark phenomenon (i.e. " hotspot " phenomenon) will occur.
The method that tradition solves the hotspot phenomenon mainly contains following several kinds:
1, in part blacking near light source, like this can be a part of light absorption, but light energy has a spot of loss; This is the most commonly used, and simple method also is more original method.
2, in Light guide (LGP) site when design, cut out the site at the light source light inlet, reduces reflection of light and refraction, therefore weakens the hotspot phenomenon, but the accurate positioning when requiring printing net-point of this method has increased difficulty of processing.
3, the light source light inlet is designed to zigzag when design Light guide, can increase the incidence angle of light source like this, makes light no longer be gathered into bright spot in the porch as far as possible, also can make moderate progress to the dark space, but this method has increased manufacturing procedure, and processing cost is high.
4, light source the place ahead is smooth, and can not there be step on the LGP surface before the light source, because step can produce refraction to light; Make light accumulate in the step place, light is conducted forward, form bright line in light source the place ahead; In product design; The joint line of light source and glue frame will be hidden by BM (light intensity test appearance) patch as far as possible, has limited the shape of LGP, has reduced the scope of application.
The centre at LGP is designed in the luminous site of LED when 5, designing as far as possible; Because LED has certain lighting angle; Is to form bright spot for fear of angle of light at the upper and lower surfaces of LGP with the design of the luminous site of LED in the centre of LGP; The inevitable like this thickness that increases module backlight also can't use under side is gone into optical condition.
In realizing the utility model process, the inventor finds to solve in the prior art of hotspot phenomenon and has following problem at least: 1, light energy has loss, makes the display screen deepening; 2, processing technology is required height, increase difficulty of processing; 3, increased manufacturing procedure, processing cost is high; 4, LGP is required harshness, poor for applicability; 5, increased the thickness of module backlight, can't under existing common side incident type LGP condition, use.
The utility model content
Solve in order to solve prior art that the existing light energy of hotspot problem has loss, difficulty of processing is big, cost is high, poor practicability, increased the thickness of module backlight and problem such as can't under side is gone into optical condition, use or one of them; The utility model provides a kind of LGP and a kind of module backlight, and the utility model is realized through following technical scheme:
On the one hand; The utility model provides a kind of LGP; The exiting surface that comprises incidence surface, intersects with said incidence surface and with said exiting surface opposed bottom surface; Said bottom surface is provided with the site, on said bottom surface, is provided with at least two rows' mixed light site with the edge of said incidence surface intersection, between said mixed light site and said site, is provided with and stays the white area.
On the other hand, the utility model provides a kind of module backlight, comprises light source and LGP, and said LGP is above-mentioned described LGP.
In the above technical scheme that the utility model provides, on the one hand a kind of LGP is provided, through edge the mixed light site is set in the bottom surface of light guide plate incident side; Increase angle of flare and solve the hotspot problem, and do not have light energy losses, processing is simple; Cost is lower, and is practical; A kind of module backlight is provided on the other hand,, make module backlight not only solve the problem of hotspot, and cost has been low owing to used above-mentioned described LGP.
Description of drawings
Fig. 1 shows the principle schematic that the hotspot problem produces;
Fig. 2 shows the perspective view of an embodiment of the said LGP of the utility model;
Fig. 3 shows the principle schematic that LGP shown in Figure 2 solves the hotspot problem;
Fig. 4 shows the perspective view of another embodiment of the said LGP of the utility model;
Fig. 5 shows the perspective view of the another embodiment of the said LGP of the utility model;
Fig. 6 shows the structural representation of an embodiment of the said module backlight of the utility model.
The specific embodiment
In order more to be expressly understood above-mentioned purpose, the feature and advantage of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawing and the specific embodiment.
A lot of details have been set forth in the following description so that make much of the utility model; But; The utility model can also adopt other to be different from other modes described here and implement, and therefore, the utility model is not limited to the restriction of following disclosed specific embodiment.
Embodiment 1:
Fig. 2 shows the perspective view of said LGP one embodiment of the utility model, and Fig. 3 shows the schematic diagram of LGP shown in Figure 2.
Present embodiment provides a kind of LGP 10; The exiting surface that comprises incidence surface 11, intersects with incidence surface 11 and with exiting surface opposed bottom surface 12; Bottom surface 12 is provided with site 13; On bottom surface 12, be provided with at least two rows' mixed light site 14, between mixed light site 14 and site 13, be provided with and stay white area 15 with the edge of incidence surface 11 intersections.
The mixed light site is set in the bottom surface of LGP and stays the white area, can well solve the hotspot problem that is produced in the module backlight.
In technique scheme, preferably, mixed light site 14 is set to 2 rows or 3 rows.
The LGP that present embodiment provided is used in the television set, and 2 rows have been arranged in the mixed light site.
Television set for different size; The size of LGP also is different, but AA district (visible area) generally all is approximately to equate to the distance of LGP, is to consider that the oversize words of distance are difficult for making narrow frame; Too weak point can cause light mixing distance not enough, the problem that other can't resolve can occur.Because the AA district is constant to the distance of LGP, stay under the situation of white width in assurance, through testing gained: the mixed light site can not surpass 3 rows at most, " bright border " will occur above 3 rows; Can not be less than 2 rows, being less than 2 rows has not just had effect.
In technique scheme, preferably, site 13 is circle with mixed light site 14.
Selecting circular site and mixed light site, is because circular site and mixed light site are the best a kind of sites of conversion LED energy, i.e. the ratio of the light energy that the light energy of exiting surface ejaculation and LED lamp send is higher.
In technique scheme, preferably, the equal diameters of the diameter of mixed light site 14 and site 13.
Satisfying under the needs of function, the size of site is being arranged in the mixed light site, be convenient to like this make, can unify processing, saving cost.
In technique scheme, preferably, mixed light site 14 is even setting with site 13.
Site and mixed light site evenly are set, help light to penetrate from exiting surface uniformly, can effectively reduce the LGP exiting surface and penetrate the uneven problem of light.
In technique scheme, preferably, row's spacing of mixed light site 14 and line space equate with the row's spacing and the line space of site 13.
Satisfying under the needs of function, making being provided with of mixed light site and site identical as much as possible, be convenient to like this make processing, making mixed light site and site to be processed into and to arrange by same specification.
In technique scheme, preferably, mixed light site 14 is 0.5～0.8mm apart from incidence surface 11.
Because the LGP of present embodiment is to be used for solving on the television set module backlight the hotspot problem; So being provided with, present embodiment is fit to the optimum distance that television set module backlight solves the hotspot problem; Because television set is a thin-wall construction, is 0.5～0.8mm so mixed light site 14 is set apart from incidence surface 11.
In technique scheme, preferably, the width that stays white area 15 is 3.4～3.8mm.
Stay the width in white area can not be too big, too big words be difficult for making narrow frame, can not be too little, and too little words will can not show effect.
In technique scheme, preferably, site 13 all adopts the mode of printing to be arranged on the bottom surface 12 with mixed light site 14.
The LGP that present embodiment provided is the LGP of printing-type; It is more convenient that the mixed light site is set on the LGP of printing-type; It is just passable only need before printing, to increase by two row sites in the cloth version, and processing is simple, and it is convenient to revise; Not only processing and fabricating is convenient than the LGP of non-printing-type, and cost is lower.
Generation reason and present embodiment below in conjunction with hotspot under the accompanying drawing introduction are how to solve the hotspot problem.
Before introducing solution hotspot problem, we introduce the concrete reason that hotspot produces earlier:
As shown in Figure 1, each LED lamp be numbered 1,2,3,4,5,6,7, the light angle that the LED lamp sends is 120 degree, the scope that the light of each LED lamp arrives is as shown in Figure 1; The zone of C1 is by 2,3,4,5 actings in conjunction, and the zone of C2 is by 3,4,5,6 actings in conjunction; The B1 zone is by 2,3,4 actings in conjunction, and B2 is by 3,4,5 actings in conjunction.Behind contrast C1 and B1, C2 and the B2, bright dark bright dark phenomenon (i.e. " hotspot " phenomenon) will appear.
Below we to introduce present embodiment be how to solve the hotspot problem.
Before light enters into AA district, viewing area; We are provided with blank space 15 and two row's mixed light sites 14 in incident side; Not only require the big or small approximately equal of the diameter and Liu Bai upside site 13 diameters of this two rows site 14; And this two rows mixed light site 14 apart from the edge of LGP promptly apart from incidence surface between 0.5～0.8mm, stay the width (the two row mixed light sites of promptly adding and the distance of top site) of white region 15 probably to remain on 3.4～3.8mm; The direction that the effect of making like this will enter into the light of visible area (being the AA district) exactly changes (the figure dotted line is former direction); The light middle part light splitter that original LED lamp 1 is sent enters into the B1 district; The light of LED lamp 5 also can enter into the B1 district simultaneously, causes the brightness increase in B1 district to approach the brightness of C1 district; In like manner, the brightness in B2 district and C2 district is approaching, as shown in Figure 3.The rest may be inferred, can solve bright dark bright dark phenomenon.To sum up, use the LGP of present embodiment structure, can weaken even eliminate the hotspot problem that produces in the module backlight.
In sum, the LGP that present embodiment provided, through in the setting of the edge of bottom surface of light guide plate incident side and site size, arrange identical mixed light site; Increase angle of flare and solve the hotspot problem, do not have light energy losses, easy to process; Cost is lower; Applicability is strong, can be widely used in the bright dipping energy requirement high, in the big product of output.
Embodiment 2:
Fig. 4 shows the perspective view of another embodiment of the said LGP of the utility model.
Present embodiment provides a kind of LGP 10; The exiting surface that comprises incidence surface 11, intersects with incidence surface 11 and with exiting surface opposed bottom surface 12; Bottom surface 12 is provided with site 13; On bottom surface 12, be provided with at least two rows' mixed light site 14, between mixed light site 14 and site 13, be provided with and stay white area 15 with the edge of incidence surface 11 intersections.
The mixed light site is set in the bottom surface of LGP and stays the white area, can well solve the hotspot problem that is produced in the module backlight.
In technique scheme, preferably, mixed light site 14 is set to 2 rows or 3 rows.
The LGP that present embodiment provides is applied to computer monitor, because thickness is smaller, requires the thickness of LGP smaller, so be provided with 3 rows' mixed light site at present embodiment.
In technique scheme, preferably, site 13 is circle with mixed light site 14.
Selecting circular site and mixed light site, is because circular site and mixed light site are the best a kind of sites of conversion LED energy, i.e. the ratio of the light energy that the light energy of exiting surface ejaculation and LED lamp send is higher.
In technique scheme, preferably, mixed light site 14 is even setting with site 13, and the diameter of mixed light site 14 is the half the of site 13 diameters, and row's spacing of mixed light site 14 and line space are littler than the row's spacing and the line space of site 13.
Site and mixed light site evenly are set, help light to penetrate from exiting surface uniformly, can effectively reduce the uneven problem of module light backlight.
Little mixed light site is arranged in the mixed light site, and becomes closely spaced layout, the irradiate light scope of expansion LED lamp that like this can be as much as possible, being arranged to little mixed light site is the appearance for fear of bright border.
In technique scheme, preferably, site 13 all adopts the mode of printing to be arranged on the bottom surface 12 with mixed light site 14.
The LGP that present embodiment provided is the LGP of printing-type; It is more convenient that the mixed light site is set on the LGP of printing-type; Only need in the cloth version, how increase by 3 row sites just can, processing simply, modification is conveniently; Not only processing and fabricating is convenient than the LGP of non-printing-type, and cost is lower.
In sum, the LGP that present embodiment provided is provided with closely spaced little mixed light site through the edge in the bottom surface of light guide plate incident side; The angle of flare of increase LED lamp as much as possible solves the hotspot problem, and effect is also relatively good, does not have light energy losses; Cost is lower; Applicability is strong, can be widely used in the bright dipping energy requirement high, in the big product of output.
Embodiment 3:
Fig. 5 shows the perspective view of the another embodiment of the said LGP of the utility model.
Present embodiment provides a kind of LGP 10; The exiting surface that comprises incidence surface 11, intersects with incidence surface 11 and with exiting surface opposed bottom surface 12; Bottom surface 12 is provided with site 13; On bottom surface 12, be provided with at least two rows' mixed light site 14, between mixed light site 14 and site 13, be provided with and stay white area 15 with the edge of incidence surface 11 intersections.
The mixed light site is set in the bottom surface of LGP and stays the white area, can well solve the hotspot problem that is produced in the module backlight.
The LGP that present embodiment provided is used in the advertisement lamp-plate, and 2 rows have been arranged in the mixed light site.
Advertisement lamp-plate for different size; The size of LGP also is different; Because the thickness of advertisement lamp-plate is different, so row's number that the mixed light site is provided with requirement is also inequality, the light guide plate that present embodiment provided is smaller; So be arranged to 2 rows, confirmed for other will look reality.
In technique scheme, preferably, site 13 is square with mixed light site 14.
Because the LGP that provides of present embodiment is used on the advertisement lamp-plate, require not have among the embodiment 1 television set so high to the LED power conversion of light, so select to use square site and mixed light site, square site and mixed light site are easy to be processed, processing cost is low.
In technique scheme, preferably, the cross section equal and opposite in direction of the cross section of mixed light site 14 size and site 13.
Satisfying under the needs of function, mixed light site cross section size is being arranged to identical, be convenient to like this make, can unify processing, saving cost with the cross section size of site.
In technique scheme, preferably, mixed light site 14 is even setting with site 13.
Site and mixed light site evenly are set, help light to penetrate from exiting surface uniformly, can effectively reduce the uneven problem of module light backlight.
In technique scheme, preferably, row's spacing of mixed light site 14 and line space equate with the row's spacing and the line space of site 13.
Satisfying under the needs of function, making being provided with of mixed light site and site identical as much as possible, be convenient to like this make processing, making mixed light site and site to be processed into and to arrange by same specification.
In technique scheme, preferably, site 13 all adopts the mode of non-printing-type to be arranged on the bottom surface with mixed light site 14.
Site that is provided with on the LGP that present embodiment provided and mixed light site are square, adopt precision optical machinery on LGP, to portray the site, and processing is simple.
In sum, the LGP that present embodiment provided is provided with the mixed light site through the edge in the bottom surface of light guide plate incident side; Increase angle of flare and solve the hotspot problem; Do not have light energy losses, cost is lower, and applicability is strong; Can be widely used in the bright dipping energy requirement low, in the lower product of output.
Embodiment 4:
Fig. 6 shows the structural representation of an embodiment of the said module backlight of the utility model.
Present embodiment provides a kind of module backlight, comprises light source 20 and LGP 10, and LGP 10 is the LGP that the utility model provided.
In the present embodiment, module backlight is used for television set, so the LGP that the LGP that has adopted is provided for embodiment 1.
Because the LGP that has adopted embodiment 1 to be provided, processing is simple, and it is convenient to revise; The module backlight that present embodiment provided, the hotspot problem that it produced is more weak even do not have, and does not have light energy losses; The visible area display effect is good, and cost is lower, and applicability is strong.
For the different module backlight of purposes, its LGP that comprises also is not quite similar, such as the module backlight that is used in the billboard, the LGP that also can use embodiment 3 to be provided.
The module backlight that the utility model provided, the LGP that it comprised is not limited only to the LGP that the foregoing description provides, and also comprises the other forms of LGP that the utility model claims provide.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (10)
1. LGP; The exiting surface that comprises incidence surface, intersects with said incidence surface and with said exiting surface opposed bottom surface; Said bottom surface is provided with the site; It is characterized in that, on said bottom surface, be provided with at least two rows' mixed light site, between said mixed light site and said site, be provided with and stay the white area with the edge of said incidence surface intersection.
2. LGP according to claim 1 is characterized in that, said mixed light site is set to 2 rows or 3 rows.
3. LGP according to claim 1 is characterized in that, said site and said mixed light site are circle.
4. LGP according to claim 3 is characterized in that, the diameter of said mixed light site and the equal diameters of said site.
5. LGP according to claim 1 is characterized in that, said mixed light site and said site are even setting.
6. LGP according to claim 5 is characterized in that, row's spacing of said mixed light site and line space equate with the row's spacing and the line space of said site.
7. LGP according to claim 1 is characterized in that, the said mixed light site said incidence surface of distance is 0.5～0.8mm.
8. LGP according to claim 1 is characterized in that, said to stay the width in white area be 3.4～3.8mm.
9. according to the arbitrary described LGP of claim 1 to 8, it is characterized in that said site and said mixed light site all adopt the mode of printing to be arranged on the said bottom surface.
10. a module backlight comprises light source and LGP, it is characterized in that, said LGP is like each described LGP in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203360405U CN202229079U (en) | 2011-09-07 | 2011-09-07 | Light guide plate and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203360405U CN202229079U (en) | 2011-09-07 | 2011-09-07 | Light guide plate and backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202229079U true CN202229079U (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011203360405U Expired - Lifetime CN202229079U (en) | 2011-09-07 | 2011-09-07 | Light guide plate and backlight module |
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| CN (1) | CN202229079U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748656A (en) * | 2012-06-11 | 2012-10-24 | 歌尔声学股份有限公司 | Side-in type light-emitting diode (LED) backlight device and method for eliminating firefly phenomenon of same |
| CN103149625A (en) * | 2013-03-13 | 2013-06-12 | 青岛海信电器股份有限公司 | Light guide board, LED (Light-Emitting Diode) backlight module and electronic equipment |
| CN103511980A (en) * | 2013-09-13 | 2014-01-15 | 南京高一智光电有限公司 | Light guide plate |
| WO2018223818A1 (en) * | 2017-06-08 | 2018-12-13 | 京东方科技集团股份有限公司 | Light guide panel, method of manufacturing light guide panel, backlight module, and display device |
| CN112799168A (en) * | 2021-02-04 | 2021-05-14 | 东莞市元立电子科技有限公司 | An ultra-thin high-brightness light guide plate |
-
2011
- 2011-09-07 CN CN2011203360405U patent/CN202229079U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748656A (en) * | 2012-06-11 | 2012-10-24 | 歌尔声学股份有限公司 | Side-in type light-emitting diode (LED) backlight device and method for eliminating firefly phenomenon of same |
| CN102748656B (en) * | 2012-06-11 | 2016-01-20 | 歌尔声学股份有限公司 | A kind of method of side entering-type LED backlight source apparatus and its firefly phenomenon of elimination |
| CN103149625A (en) * | 2013-03-13 | 2013-06-12 | 青岛海信电器股份有限公司 | Light guide board, LED (Light-Emitting Diode) backlight module and electronic equipment |
| CN103511980A (en) * | 2013-09-13 | 2014-01-15 | 南京高一智光电有限公司 | Light guide plate |
| WO2018223818A1 (en) * | 2017-06-08 | 2018-12-13 | 京东方科技集团股份有限公司 | Light guide panel, method of manufacturing light guide panel, backlight module, and display device |
| CN112799168A (en) * | 2021-02-04 | 2021-05-14 | 东莞市元立电子科技有限公司 | An ultra-thin high-brightness light guide plate |
| CN112799168B (en) * | 2021-02-04 | 2025-07-22 | 东莞市元立光电股份有限公司 | Ultrathin high-brightness light guide plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee after: Hisense Visual Technology Co., Ltd. Address before: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120523 |