CN1912705A - Direct light backlight mould set using luminous dipolar as light source - Google Patents
Direct light backlight mould set using luminous dipolar as light source Download PDFInfo
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- CN1912705A CN1912705A CN 200510089840 CN200510089840A CN1912705A CN 1912705 A CN1912705 A CN 1912705A CN 200510089840 CN200510089840 CN 200510089840 CN 200510089840 A CN200510089840 A CN 200510089840A CN 1912705 A CN1912705 A CN 1912705A
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Abstract
A straight down type of back light module using LED as light source sets a cover layer above light outgoing surface of LED to make light from positive surface of LED generate light diffraction because of said cover layer in order to let spot light source of LED be formed to be surface light source for decreasing numbers of LED used on back light module.
Description
Technical field:
The invention relates to a kind of module backlight, it refers to a kind of structure of using the luminous secondary body wafer in module backlight especially.
Background technology:
Why eyes can see the world of the in riotous profusion five colours, are because of light source in action.Equally, notebook computer comes display color by LCD, no matter is to adopt supertwist to row (STN) or membrane transistor (TFT), needs all that white light is backlight to throw light on.Because white-light spectrum has comprised all colors, and the color filter of display can be selected required color from white-light spectrum, just finally form the bright and colourful picture true to nature that our eyes are seen.
What can produce white-light spectrum at present mainly contains electroluminescence (EL) and cold cathode fluorescent tube (CCFT), and White LED is considered to the new light sources of 21 century most worthy as the up-and-coming youngster.In the mobile phone of our daily employing, LED generally is used for doing light source.And the liquid crystal display of common notebook computer mostly adopts CCFT as back light.CCFT brightness is very high, but shortcoming is to need High Level AC Voltage to drive, contain the mercury harmful simultaneously to Environmental Health, and to the relative complex that requires of power supply transformation rectification group, when large scale liquid crystal display and the exploitation of LCD TV product, more can face the manufacturing difficulty of large tracts of land backlight, add bottlenecks such as blooming Costco Wholesale costliness, though it is luminous that CCFL has line style, characteristics such as light source is even, power consumption height but, not environmental protection is its shortcoming, in comparison, LED is luminous because of adopting single-point, power consumption is low, it is long to add the life-span, short and small frivolous, advantages such as tool environmental protection, make present LED replace CCFL gradually and be used for mobile phone in a large number, PDA, digital still camera, products such as automobile-used panel and hand held DVD player, future more will be progressively towards the LCD monitor, NB, fields such as LCD TV stride forward.
Energy-conservation is the most significant advantage of LED technology, and its comparable ordinary incandescent lamp is saved the electric energy of 60%-80%, also can save 50% than daylight lamp.It adopts the low-voltage power supply mode, so safety and reliability.
The U100 of Toshiba has adopted the independent control gear of 32 LED to realize carrying on the back the irradiation system on 7.2 inches liquid crystal displays, can be distinct and clearly show image and literal, and power but only has 1.3W, and can regulated at will.And CCFT (Cold Cathode Fluorescent Tube) the cold cathode fluorescent tube that the comparable size liquid crystal display needs, power consumption will reach more than the 2.5W.Power consumption reduces the battery life that has also directly prolonged U100, allows move more convenient freedom.
Secondly, environmental protection is one of unique charm of LED technology.Because LED does not adopt environmentally harmful element mercury, and is mercurous among the CCFT.As everyone knows, mercury pollution has become a global environment difficult problem.EU Committee's issue bulletin proposes the long-term plan of control mercury pollution comprehensively, comprising the export abroad of forbidding the mercury product.This plan points out that mercury and compound thereof can cause fatal infringement to health; Even than the absorption of low dosage mercury, bring infringement also can for people's nervous system.Even mercury flow into the ocean from land, also can progressively deposit on one's body the fish.Behind the fish that mercury content exceeds standard after the people is edible, also can cause possible permanent damage to health.
So, following LED will be used on the module backlight in a large number, because advantages such as its power saving and environmental protection are ordered about down, its quantity was more when right LED at present was applied to module backlight, because LED is a pointolite, for making it become line or area source, so LED is quantitatively many on using, the present invention provides a kind of structure of module backlight to reduce the LED usage quantity.
Summary of the invention:
Fundamental purpose of the present invention is to provide a kind of structure of utilizing light-emittingdiode for the down straight aphototropism mode set of light source, and it is that to utilize at least one LED Chips for Communication be its light emitting source (Light Source), to save power supply.
Secondary objective of the present invention, be to provide a kind of structure of utilizing light-emittingdiode for the down straight aphototropism mode set of light source, top in an exit facet of this light-emittingdiode is provided with a shielding layer, so that the front light-emitting line of the light source of this light-emittingdiode is owing to this shielding layer produces x-ray diffraction, and the pointolite that makes this light-emittingdiode becomes area source, is used in the quantity of the light-emittingdiode of module backlight with minimizing.
Description of drawings:
Fig. 1: it is the structural representation of a preferred embodiment of the present invention.
The figure number explanation:
1 module 10 light-emittingdiodes 12 shielding layers backlight
20 light diffusing sheets, 30 reflector plates
Embodiment:
Now further understand and understanding for your auditor is had architectural feature of the present invention and the effect reached, sincerely help with preferred embodiment and cooperate detailed explanation, illustrate as after:
The present invention is that the speed of lighting of application light-emittingdiode is very fast, need one warm lamp period when starting unlike cold-cathode tube, and the problem of not having environmental protection, and be used in module backlight, see through a kind of LED structure of novelty again so that it becomes area source, to reduce the usage quantity of light-emittingdiode, to save cost and power supply.
The present invention can be used for following surface adhesion type (SMD) light-emittingdiode, bulb type (Lamp) light-emittingdiode and PCB-type (PCB) light-emittingdiode, the present invention also is regardless of the light-emittingdiode that is limited to the aforementioned encapsulating structure of mentioning, be light-emittingdiode applicable to all types of encapsulating structures, under be to be that example is done an explanation with a surface adhesion type (SMD) light-emittingdiode.
See also Fig. 1, it is the structural representation of a preferred embodiment of the present invention; As shown in the figure, the present invention provides a kind of structure of utilizing light-emittingdiode for the down straight aphototropism mode set of light source, module 1 its primary structure backlight comprises a light-emittingdiode 10 and light diffusion version 20, wherein the top of an exit facet of this light-emittingdiode 10 is provided with a shielding layer 12, seeing through this shielding layer 12 is covered the light of this light-emittingdiode 10 and produces x-ray diffraction in side, the side every bit that causes this light-emittingdiode 10 all is an illuminating source, makes the pointolite of light-emittingdiode of known techniques become area source owing to produce x-ray diffraction.
Moreover, module backlight of the present invention can further comprise a reflector plate, to increase the utilization factor of light, because this shielding layer 12 is positioned at the exit facet of the main light of this diode, so the material of this shielding layer 12 must be used the material of low light absorptivity, so just be unlikely the loss luminous energy, also can produce the material of total reflection, the present invention is to use conductive material, for example: the compound of gold, silver, copper, aluminium or its alloy or its above-mentioned combination in any.
Again, the length of this shielding layer 12 of the present invention is to can be to be equal to or greater than or less than the length of the exit facet of this light-emittingdiode, to provide light source uniformly to become.
The above, it only is preferred embodiment of the present invention, be not to be used for limiting scope of the invention process, all according to the described shape of the present patent application claim, structure, feature and principle etc. change and modify, all should be contained in the claim of the present invention.
Claims (8)
1, a kind of structure of utilizing light-emittingdiode for the down straight aphototropism mode set of light source, its primary structure comprises:
At least one light-emittingdiode is provided with a shielding layer in the top of the light-emitting face of this light-emittingdiode;
One light diffusing sheet, it is arranged at the top of this LED Chips for Communication.
2, as the 1st described structure of claim, wherein the length of this shielding layer can be greater than this light-emitting face.
3, as the 1st described structure of claim, wherein the length of this shielding layer can equal this light-emitting face.
4, as the 1st described structure of claim, wherein the length of this shielding layer system is less than this light-emitting face.
5, as the 1st described structure of claim, wherein this light-emittingdiode is to adopt bulb type (Lamp), PCB-type (PCB), positive surface-emitting type, lateral emitting type or surface adhesion type encapsulating structures such as (SMD).
6, as the 1st described structure of claim, wherein this shielding layer can be a conductive material.
7, as the 6th described structure of claim, wherein this conductive material is the compound that is selected from gold, silver, copper, aluminium or its alloy or its above-mentioned combination in any.
8, as the 1st described structure of claim, wherein the below of this LED Chips for Communication further is provided with a reflector plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510089840 CN1912705A (en) | 2005-08-08 | 2005-08-08 | Direct light backlight mould set using luminous dipolar as light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510089840 CN1912705A (en) | 2005-08-08 | 2005-08-08 | Direct light backlight mould set using luminous dipolar as light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1912705A true CN1912705A (en) | 2007-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510089840 Pending CN1912705A (en) | 2005-08-08 | 2005-08-08 | Direct light backlight mould set using luminous dipolar as light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1912705A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020103867A1 (en) * | 2018-11-22 | 2020-05-28 | 瑞仪(广州)光电子器件有限公司 | Light-emitting mechanism and backlight module |
-
2005
- 2005-08-08 CN CN 200510089840 patent/CN1912705A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020103867A1 (en) * | 2018-11-22 | 2020-05-28 | 瑞仪(广州)光电子器件有限公司 | Light-emitting mechanism and backlight module |
| TWI710833B (en) * | 2018-11-22 | 2020-11-21 | 瑞儀光電股份有限公司 | Light-emitting mechanism and backlight module |
| US11106081B2 (en) | 2018-11-22 | 2021-08-31 | Radiant(Guangzhou) Opto-Electronics Co., Ltd | Light-emitting mechanism and backlight module |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20070427 Address after: Taiwan County Taipei Furen street Chinese Tucheng City, No. 15 Applicant after: Wentai Tech Co., Ltd. Address before: Taiwan County Taipei Furen street Chinese Tucheng City, No. 15 Applicant before: Huang Fuguo |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |