CN1591127A - Back-to-light module - Google Patents
Back-to-light module Download PDFInfo
- Publication number
- CN1591127A CN1591127A CN 03155689 CN03155689A CN1591127A CN 1591127 A CN1591127 A CN 1591127A CN 03155689 CN03155689 CN 03155689 CN 03155689 A CN03155689 A CN 03155689A CN 1591127 A CN1591127 A CN 1591127A
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- plate
- backlight module
- filtering
- light
- light source
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Abstract
The present invention relates to a backlight module. It includes a cavity body formed from a first plate and second plate; a light source placed in the above-mentioned cavity body, the light emitted from said light source can be exited onto above mentioned backlight module by means of the above-mentioned second plate; and a light-filtering device placed on the above-mentioned second plete and used for filtering UV ray from light emitted by above mentioned light source.
Description
Technical field
The present invention relates to a kind of backlight module, particularly relate to a kind of filtering apparatus that utilizes and directly be arranged at the backlight module of light guide plate incidence surface with filtering light source middle-ultraviolet lamp.
Background technology
The backlight module of existing display, for fear of aetiolation backlight, and need the ultraviolet filtering in the light, the means of its filtering light source middle-ultraviolet lamp are to adopt to be coated with one deck filter as the tube outer wall of light source, magnesium oxide for example, can be with ultraviolet filtering, and can not make display produce aetiolation backlight.
But traditional mode at tube outer wall coating filter often causes fluorescent tube manufacture craft difficulty, and ultraviolet ray filtering fully.
Summary of the invention
The object of the present invention is to provide a kind of backlight module, utilize filtering apparatus directly to be arranged at the light guide plate incidence surface with filtering light source middle-ultraviolet lamp.
For reaching above-mentioned purpose, the invention provides a kind of backlight module, comprising: a cavity is formed with one first plate and one second plate; One light source is arranged in the above-mentioned cavity, emits beam to penetrate above-mentioned backlight module via above-mentioned second plate; And a filtering apparatus, be arranged at above-mentioned second plate, in order to the ultraviolet ray in the above-mentioned light source emitted light of filtering.
According to the present invention, the light inlet owing to filtering apparatus directly being arranged at light guide plate can effective comprehensive filtration enter the light of light guide plate, filtering ultraviolet ray wherein; And on light guide plate, filtering apparatus is set with coating filter or the mode that attaches the optical filtering diaphragm, its operation more than in the prior art on fluorescent tube the coating filter conveniently simple and easy, and be beneficial to heavy industry, therefore can effectively save manufacturing cost.
Description of drawings
Fig. 1 is a backlight module synoptic diagram of the present invention.
Embodiment
Fig. 1 is first embodiment of backlight module of the present invention.Backlight module 100 has one with first plate and the formed cavity 110 of second plate, and in this embodiment, first plate is that reflecting plate 120, the second plates are light guide plate 130, and light guide plate 130 has an incidence surface 131 and an exiting surface 132; Fluorescent tube 140 as light source is arranged in the cavity 110, and fluorescent tube 140 emits beam and enters light guide plate 130 through incidence surface 131, leaves light guide plate 130 through exiting surface 132 again.
For filtering the ultraviolet ray of fluorescent tube 140 in emitting beam, incidence surface 131 in light guide plate 130 is provided with a filtering apparatus, in this embodiment, filtering apparatus can be an optical filtering diaphragm 150, directly be attached on the incidence surface 131, or use light-screening coating with ultraviolet ray filtering function (for example: magnesium oxide), coat on the incidence surface 131 so that enter in the light of light guide plate 130 ultraviolet ray fully filtering it.
In addition, in this embodiment,, a disperser 160 is set also on light guide plate 130, uses so that astigmatism is even for the light that helps backlight module 100 evenly diffuses to whole front panel.Disperser 160 comprises first diffusion sheet 161, rhombus lens 162 and second diffusion sheet 163; Wherein, first diffusion sheet 161 is to be arranged on the light guide plate 130, and rhombus lens 162 is to be arranged on first diffusion sheet 161, and second diffusion sheet 163 is to be arranged on the rhombus lens 362, be noted that the visual demand of quantity that this rhombus lens and diffusion sheet are set and order and being adjusted.
According to the present invention, the incidence surface 131 owing to filtering apparatus directly being arranged at light guide plate 130 can effective comprehensive filtration enter the light of light guide plate 130, filtering ultraviolet ray wherein; And on light guide plate 130, filtering apparatus is set with coating filter or the mode that attaches optical filtering diaphragm 150, its operation more than in the prior art on fluorescent tube the coating filter convenient simple and easy, and be beneficial to heavy industry, therefore can effectively save manufacturing cost.
Though disclosed the present invention in conjunction with above preferred embodiment; yet it is not in order to qualification the present invention, any skilled philtrum, without departing from the spirit and scope of the present invention; can do some change and retouching, so protection scope of the present invention should be with being as the criterion that claim was defined.
Claims (9)
1. backlight module comprises:
One cavity is formed with one first plate and one second plate;
One light source is arranged in this cavity, emits beam to penetrate this backlight module via this second plate; And
One filtering apparatus is arranged at this second plate, in order to the ultraviolet ray in this light source emitted light of filtering.
2. backlight module as claimed in claim 1, wherein this first plate is a reflecting plate.
3. backlight module as claimed in claim 1, wherein this second plate is a light guide plate.
4. backlight module as claimed in claim 1, wherein this second plate has an incidence surface and an exiting surface, and this light source emits beam and enters this second plate through this incidence surface, leave this second plate through this exiting surface again, and this filtering apparatus is arranged at this incidence surface.
5. backlight module as claimed in claim 1, wherein this filtering apparatus is an optical filtering diaphragm, is attached at this second plate.
6. backlight module as claimed in claim 1, wherein this filtering apparatus is a light-screening coating, coats this second plate.
7. backlight module as claimed in claim 1, it comprises that also a disperser is arranged at this second plate.
8. backlight module as claimed in claim 7, wherein this disperser comprises:
One first diffusion sheet is positioned on this second plate;
One rhombus lens is positioned on this first diffusion sheet; And
One second diffusion sheet is positioned on this rhombus lens.
9. backlight module as claimed in claim 1, wherein this light source is a fluorescent tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031556892A CN100339751C (en) | 2003-09-03 | 2003-09-03 | Back-to-light module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031556892A CN100339751C (en) | 2003-09-03 | 2003-09-03 | Back-to-light module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1591127A true CN1591127A (en) | 2005-03-09 |
| CN100339751C CN100339751C (en) | 2007-09-26 |
Family
ID=34598179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031556892A Expired - Fee Related CN100339751C (en) | 2003-09-03 | 2003-09-03 | Back-to-light module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100339751C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101408696B (en) * | 2007-10-09 | 2011-07-27 | 中华映管股份有限公司 | LCD device |
| CN104406099A (en) * | 2014-12-03 | 2015-03-11 | 福建捷联电子有限公司 | Display backlight structure capable of reducing bright light harm |
| CN105572961A (en) * | 2014-09-29 | 2016-05-11 | 纬创资通股份有限公司 | Backlight module and display device with same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6497946B1 (en) * | 1997-10-24 | 2002-12-24 | 3M Innovative Properties Company | Diffuse reflective articles |
| CN2336378Y (en) * | 1998-03-02 | 1999-09-01 | 宋义 | Uniform high-efficiency side-luminous backlight source |
| JP2001343641A (en) * | 2000-05-31 | 2001-12-14 | Optrex Corp | Liquid crystal display device |
| CN2457630Y (en) * | 2000-08-17 | 2001-10-31 | 中强光电股份有限公司 | Back light device |
-
2003
- 2003-09-03 CN CNB031556892A patent/CN100339751C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101408696B (en) * | 2007-10-09 | 2011-07-27 | 中华映管股份有限公司 | LCD device |
| CN105572961A (en) * | 2014-09-29 | 2016-05-11 | 纬创资通股份有限公司 | Backlight module and display device with same |
| TWI647521B (en) * | 2014-09-29 | 2019-01-11 | 緯創資通股份有限公司 | Backlight module and display having the same |
| CN104406099A (en) * | 2014-12-03 | 2015-03-11 | 福建捷联电子有限公司 | Display backlight structure capable of reducing bright light harm |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100339751C (en) | 2007-09-26 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070926 Termination date: 20210903 |
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| CF01 | Termination of patent right due to non-payment of annual fee |