CN2898870Y - Sided negative-light module - Google Patents
Sided negative-light module Download PDFInfo
- Publication number
- CN2898870Y CN2898870Y CN 200620115113 CN200620115113U CN2898870Y CN 2898870 Y CN2898870 Y CN 2898870Y CN 200620115113 CN200620115113 CN 200620115113 CN 200620115113 U CN200620115113 U CN 200620115113U CN 2898870 Y CN2898870 Y CN 2898870Y
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- China
- Prior art keywords
- diffusion barrier
- backlight module
- light source
- type backlight
- side type
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Abstract
The utility model relates to a sided negative-light module, which comprises a surface source device, and an optical diaphragm set provided above a lighting surface of the surface source device. The surface source device comprises a frame having an opening and a hollow area formed therein; a high diffusivity diffusion barrier embedded in the opening of the frame and comprising a base plate and a high diffusivity particle layer coated on the base plate, wherein, the high diffusivity particle layer has a thickness between 20 um to 400 um and has a measured density above 98 percent according to the standard method of JIS K7136; a reflective coating provided at the inner side of the frame; and a plurality of light sources provided on at least one side of the frame. Therefore, the sided negative-light module of the utility model makes the light more even, and meets market demands of light, thin, high brightness and low cost. The utility model will instead of the conventional sided negative-light module having a light panel.
Description
(1) technical field
The utility model relates to a kind of backlight module, particularly a kind of side type backlight module that is suitable for LCD.
(2) background technology
Generally speaking, the primary structure of LCD (being called for short LCD) comprises panel and backlight module two large divisions.Faceplate part comprises for example tin indium oxide (ITO) electro-conductive glass, liquid crystal, alignment film, colored filter, polaroid, drive integrated circult etc., and the backlight module part then comprises for example fluorescent tube, light guide plate and various bloomings etc.Different along with LCD size and structure, the backlight module of the different shape of just must arranging in pairs or groups.And backlight module can be divided into the direct type backlight module that light source produces according to the position at light source place under panel, is usually used in medium-sized or large-scale panel; Or near the side type backlight module that the panel side, produces of light source, be applicable to medium-sized and small panel.And many info class articles for use must be dependent on the requirement that battery uses with off-line, so must consider the power consumption problem.Industry mostly uses side type backlight module to reach its demand at present.For example, Figure 1 shows that the diagrammatic cross-section of general side type backlight module 10.Side type backlight module 10 comprises light source 11, light guide plate 12, diffuser plate 13, brightening piece 14.For the incident ray brightness from light source is increased, set up reflecting plate 15 at light source 11 opposite sides.In addition, the superiors at backlight module 10 can add a fender 16 with the optical devices in the protection backlight module.As shown in Figure 1, generally cold-cathode tube of 10 employings of side type backlight module as light source 11, utilizes the light guide plate 12 and the reflecting plate 15 of wedge type structure to make light source evenly reflex to the full wafer module in the side of module 10.This structure be because can reduce the thickness of module, thus be suitable for portable product such as mobile computer, just difficult control of homogeneity of brightness.
For LCD can being presented better view and admire angle and color, industry is everlasting and uses blooming miscellaneous to improve its brightness in the backlight liquid crystal display module and all spend together most.There is blooming to be called as " concentration piece (Brightness Enhancement Film) or prismatic lens (Prism Film) " with light-focusing function, its main function is will be concentrated to positive visual angle (On-axis) direction of degree approximately ± 35 from the ghost line that light guide plate (lightguide) is issued to from all directions by refraction and inner full-reflection, and the audience promptly can obtain optimal brightness in normal operation range.And " reflecting type polarizing brightness enhancement film ", the polar biased light usable reflection of non-penetration direction can be returned backlight module, because the end reflector plate in the module has diffusion (Diffusion) and upsets (Scrambling) effect, so former non-penetration direction polar biased light partly can be converted into penetration direction polar biased light, and then pass through polaroid down.After effect and so forth, most of former should being absorbed and the light of loss mostly is transformed into available effective light, panel luminance not only can promote 60%, promotes effect simultaneously and can extensively reach whole angular field of view.If cooperate aforesaid BEF brightness enhancement film again, can allow panel reach 160% brightening effect.The function that reflector plate is played the part of at backlight module has two: the first, and with the light that sends from the lamp source, usable reflection is to light guide plate, and usefulness depends on the reflectivity of direct reflection; Second kind is that light guide plate is returned in the light scattered reflection of leaking from light guide plate, also therefore makes the planar light in the parallel light guide plate of advancing change into vertical light guide plate direction and then effusion light guide plate, and its reflectivity can reach 98%, makes the backlight module integral brightness improve.Allow the blooming of distribution of light balancing function, then be called as " diffusion barrier ".This kind utilizes optical principle to make light refraction, reflection, gathering or equally distributed mode, effectively improve the LCD panel luminance so that light source is done the performance of full blast, but need do not changed any component design or consume the way of additional energy source, become most economical and easy solution.
(3) utility model content
The present utility model people is through extensively and profoundly research, and creation is provided the reflectance coating of high diffusion and the planar light source device that the splendid diffusion barrier of mist degree assembles and the characteristic of arranging in pairs or groups the different optical film and created a series of backlight modules.
The purpose of this utility model is to provide a kind of side type backlight module, this side type backlight module can allow light be more evenly distributed, and meet lightweight, slimming, high brightness and market demands cheaply, can be in order to replace the side type backlight module that tradition has light guide plate.Side type backlight module of the present utility model comprises: a planar light source device; An and optical diaphragm group that is disposed at the exiting surface top of this face source apparatus.This planar light source device comprises: a framework, and this framework has hollow region, has an opening in the above; One high diffusibility diffusion barrier, be covered on the opening of this framework, this high diffusibility diffusion barrier comprises a substrate, and at least one high diffusion particle coating, the above-mentioned series of strata that are coated with are coated this substrate, its thickness is between 20 microns to 400 microns, and has according to JIS K7136 standard method and record and be not less than 98% mist degree; One reflectance coating is equipped on this framework inboard; And a plurality of light sources, be arranged at least one side in this framework.
Therefore, according to the above, the utility model side type backlight module can make light be more evenly distributed, and meets lightweight, slimming, high brightness and market demands cheaply, and can replace the side type backlight module that tradition has diffuser plate.
(4) description of drawings
Fig. 1 is the diagrammatic cross-section of general direct type backlight module.
Fig. 2 is the diagrammatic cross-section of the side type backlight module of the utility model one embodiment.
Fig. 3 is the diagrammatic cross-section of the side type backlight module of the utility model one embodiment.
Fig. 4 is the diagrammatic cross-section of the side type backlight module of the utility model one embodiment.
Fig. 5 is the diagrammatic cross-section of the side type backlight module of the utility model one embodiment.
Fig. 6 is the diagrammatic cross-section of the side type backlight module of the utility model one embodiment.
(5) embodiment
Side type backlight module 20 of the present utility model as shown in Figure 2, it comprises: a planar light source device 1; And an optical diaphragm group 2, it is disposed at the exiting surface top of this face source apparatus 1.Wherein this planar light source device 1 comprises: a framework 1-1, and this framework has an opening and in wherein being formed with a hollow region 1-1a; One covers the high diffusibility diffusion barrier 1-2 of this framework opening, this high diffusibility diffusion barrier 1-2 comprises a substrate 1-2a and at least one high diffusion particle coating 1-2b, above-mentioned coating 1-2b coats this substrate 1-2a, its thickness is between 20 microns to 400 microns, and have according to JIS K7136 that standard method records be not less than 98% mist degree; One is equipped on the reflectance coating 1-3 of this framework 1-1 inboard, this reflectance coating 1-3 is the high scattered reflection film of uvioresistant, and according to ASTM D523 standard method, the glossiness that records when with 60 ° of incident angle projections is lower than 10%, in the scope between visible wavelength 380 nanometer to 780 nanometers, can provide the reflectivity that reaches more than 95%; And a plurality of light source 1-4, they are arranged at least one side in this framework 1-1.
Light source 1-4 of the present utility model is the light source of wavelength between the visible light of 380 nanometer to 780 nanometers.This light source can be single wavelength or multi-wavelength, can be used for light source 1-4 of the present utility model such as but not limited to cold cathode ray tube (CCFL), light emitting diode (LED), organic EL component (OLED), macromolecule electroluminescence component (PLED), outer electrode fluorescent lamp (EEFL), plane fluorescent lamp (FFL), carbon nano-tube field emission light-emitting assembly, Halogen lamp LED, xenon lamp or high-pressure sodium lamp.Light source 1-4 of the present utility model can be mounted on the inner arbitrary position of framework 1-1, as is disposed at least one side of the hollow region 1-1a in the framework 1-1.
See also Fig. 3, the side type backlight module 30 of the utility model one preferred embodiment comprises: a planar light source device 1; And an optical diaphragm group 2, it is disposed at the exiting surface top of this planar light source device 1.Wherein optical diaphragm group 2 comprises: at least one diffusion barrier 2-1, be positioned on the exiting surface of planar light source device 1, this diffusion barrier 2-1 is high briliancy diffusion barrier, can be one to three diffusion barrier stacks, placing its luminance gain of a slice diffusion barrier is 26%, placing two its luminance gains of diffusion barrier is 36%, can make its luminance gain reach 38% and place three diffusion barriers, so can effectively improve the briliancy of backlight module and have the function of diffusion and light harvesting.
Now see also Fig. 4, the side type backlight module 40 of another preferred embodiment of the utility model comprises: a planar light source device 1; And an optical diaphragm group 2, it is disposed at the exiting surface top of this face source apparatus 1.Wherein optical diaphragm group 2 comprises: at least one diffusion barrier 2-1, this diffusion barrier be positioned at planar light source device 1 exiting surface on, can be one to two diffusion barrier and stack, placing a slice diffusion barrier, can to make its luminance gain be 26%, and placing two diffusion barriers, can to make its luminance gain be 36%; An and reflecting type polarizing brightness enhancement film 2-2 who is positioned on this diffusion barrier 2-1.Can make the whole front panel briliancy promote 60% owing to place the reflecting type polarizing brightness enhancement film, so, then can make integral brightness promote 96% if use two diffusion barriers and a slice reflecting type polarizing brightness enhancement film 2-2.
Now see also Fig. 5, the side type backlight module 50 of another preferred embodiment of the utility model comprises: a planar light source device 1; And an optical diaphragm group 2, it is disposed at the exiting surface top of this face source apparatus 1.Wherein optical diaphragm group 2 comprises: one is positioned at the diffusion barrier 2-1 on the exiting surface of planar light source device 1; One is positioned at the prismatic lens 2-3 on this diffusion barrier 2-1; An and last diffusion barrier 2-4 who is positioned on this prismatic lens 2-3.The backlight module of this type can make briliancy promote 60%.
Now see also Fig. 6, the side type backlight module 60 of another preferred embodiment of the utility model comprises: a planar light source device 1; And an optical diaphragm group 2, it is disposed at the exiting surface top of this face source apparatus 1.Wherein optical diaphragm group 2 comprises a diffusion barrier 2-1, is positioned on the exiting surface of planar light source device 1; One prismatic lens 2-3, it is positioned on this diffusion barrier 2-1, and a reflecting type polarizing brightness enhancement film 2-2 is positioned on this prismatic lens 2-3.The backlight module of this type can make briliancy promote 120%.
Because the planar light source device in the utility model side type backlight module does not use light guide plate, so more traditional planar light source device is frivolous, and the utility model utilizes the reflectance coating and the diffusion barrier of the high diffusion of tool, make light in framework 1-1, utilize the light total reflection principle to produce homogenization, therefore, light uniformization can be spread, make light have high diffusion property, with the light and shade phenomenon of preventing, reach light and all spend effect together.And the blooming group in the utility model side type backlight module, be to have adopted light refraction, reflection, gathering or equally distributed optical principle, utilize the characteristic function of various blooming pieces, be combined into preferable backlight module, the LCD panel luminance can be improved greatly so that light source is done the performance of full blast, but need not change the creation of any component design or consumption additional energy source, become most economical and easy solution.
More than the explanation done for the utility model be not in order to limit scope of the present utility model.Modification that any personage who is familiar with this skill can reach easily and change all should drop within the protection domain of the present utility model.
Claims (10)
1. side type backlight module, it comprises:
One planar light source device; And
One optical diaphragm group, it is disposed at the exiting surface top of this face source apparatus;
It is characterized in that this planar light source device comprises:
One framework, this framework have an opening and in wherein being formed with a hollow region;
One high diffusibility diffusion barrier, this high diffusibility diffusion barrier embed this framework opening and comprise a substrate, and
At least one high diffusion particle coating, this coating is coated this substrate, its thickness is between 20 microns to 400 microns, and have according to JIS K7136 that standard method records be not less than 98% mist degree;
One reflectance coating, this reflectance coating is equipped on the inboard of this framework; And
A plurality of light sources, these a plurality of light sources are arranged at least one side in this framework.
2. side type backlight module as claimed in claim 1 is characterized in that, this optical diaphragm group comprises:
At least one diffusion barrier, this diffusion barrier is positioned on the exiting surface of this planar light source device.
3. side type backlight module as claimed in claim 2 is characterized in that, this at least one diffusion barrier comprises one to three diffusion barrier.
4. side type backlight module as claimed in claim 1 is characterized in that, this optical diaphragm group comprises:
At least one diffusion barrier, this diffusion barrier are positioned on the exiting surface of this planar light source device; And
One is positioned at the reflecting type polarizing brightness enhancement film on this diffusion barrier.
5. side type backlight module as claimed in claim 4 is characterized in that, this at least one diffusion barrier comprises one to two diffusion barrier.
6. side type backlight module as claimed in claim 1 is characterized in that, this optical diaphragm group comprises:
One diffusion barrier, it is positioned on the exiting surface of this planar light source device;
One prismatic lens, it is positioned on this diffusion barrier; And
Diffusion barrier on one, it is positioned on this prismatic lens.
7. side type backlight module as claimed in claim 1 is characterized in that, this optical diaphragm group comprises:
One diffusion barrier, it is positioned on the exiting surface of this planar light source device;
One prismatic lens, it is positioned on this diffusion barrier; And
One reflecting type polarizing brightness enhancement film, it is positioned on this prismatic lens.
8. side type backlight module as claimed in claim 1, it is characterized in that, this reflectance coating is the high scattered reflection film of uvioresistant, and according to ASTM D523 standard method, during with 60 ° of incident angle projections, the glossiness that records is lower than 10%, in the scope between visible wavelength 380 nanometer to 780 nanometers, can provide the reflectivity that reaches more than 95%.
9. side type backlight module as claimed in claim 1 is characterized in that, the wavelength of this light source is between 380 nanometer to 780 nanometers.
10. side type backlight module as claimed in claim 1 is characterized in that, this light source is selected from the group that is made of cold cathode ray tube, light emitting diode, organic EL component, macromolecule electroluminescence component, outer electrode fluorescent lamp and plane fluorescent lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620115113 CN2898870Y (en) | 2006-05-12 | 2006-05-12 | Sided negative-light module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620115113 CN2898870Y (en) | 2006-05-12 | 2006-05-12 | Sided negative-light module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2898870Y true CN2898870Y (en) | 2007-05-09 |
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ID=38074204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620115113 Expired - Fee Related CN2898870Y (en) | 2006-05-12 | 2006-05-12 | Sided negative-light module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2898870Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047613A (en) * | 2013-01-15 | 2013-04-17 | 深圳市华星光电技术有限公司 | Light guiding system, side-inlet type backlight module and liquid crystal display |
| WO2013127250A1 (en) * | 2012-02-28 | 2013-09-06 | 天地融科技股份有限公司 | Electronic device |
-
2006
- 2006-05-12 CN CN 200620115113 patent/CN2898870Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013127250A1 (en) * | 2012-02-28 | 2013-09-06 | 天地融科技股份有限公司 | Electronic device |
| CN103047613A (en) * | 2013-01-15 | 2013-04-17 | 深圳市华星光电技术有限公司 | Light guiding system, side-inlet type backlight module and liquid crystal display |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070509 Termination date: 20130512 |