CN2593229Y - Light source module of liquid crystal display - Google Patents
Light source module of liquid crystal display Download PDFInfo
- Publication number
- CN2593229Y CN2593229Y CN02292808U CN02292808U CN2593229Y CN 2593229 Y CN2593229 Y CN 2593229Y CN 02292808 U CN02292808 U CN 02292808U CN 02292808 U CN02292808 U CN 02292808U CN 2593229 Y CN2593229 Y CN 2593229Y
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- light
- emitting diode
- source module
- led
- light emitting
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Abstract
The utility model relates to an improved structure of a light source which is used in a liquid crystal display panel (LCD panel) and in a light source module adopting a light emitting diode (LED) as the light source. Phosphor is mixed and coated at the light inlet surface and the light outlet surface of a light guide panel (LGP) or the light inlet surface and the light outlet surface of a light guide stick (LGS) in the light source module, then, after the mixed phosphor is excited by an ultraviolet light emitting diode, and a white light with three wavelength are generated so as to replace the NICHIA white light LED to serve as the light source. The utility model can reduce production cost and can increase the color expression of the liquid crystal display.
Description
Technical field
The utility model relates to the light source module of a kind of panel of LCD (LCD Panel), be meant especially a kind of use panel of LCD and with light emitting diode (LED) as the light source module (lightmodule) of light source in the structure-improved of light source, can be by the incidence surface of light guide plate in light source module (LGP), the incidence surface of exiting surface or lamp guide (LGS), exiting surface coating mixed fluorescent powder, after exciting this mixed fluorescent powder via ultraviolet light-emitting diodes again, produce the white light of three-wavelength, the white light LEDs that replaces NICHIA is as light source, reducing production cost, and can increase the color representation of LCD.
Background technology
Traditional LCD is because numeral that shows or pattern etc., unlike dazzling as the light emitting diode, so visually seem high refined.But the shortcoming of LCD is that itself is not luminous, thus extra light source module need be provided, make when external environment does not have light still can video picture on screen.
In the front light-source module 100 of panel of LCD; with light emitting diode (LED) 102 is that the leaded light principle of light source is by LED102 light to be imported lamp guide (LGS) 104 earlier; then light is imported light guide plate (LGP) 106 by lamp guide 104; last surface of again light being led panel of LCD 108; traditional front light-source modular structure and light at the path synoptic diagram that carries out in the structure shown in the arrow of Figure 1A and Figure 1B; wherein led light source is to adopt day dual wavelength white light LEDs of inferior (Nichia) patent protection, as shown in Figure 2.
What Fig. 3 showed is the backlight module 300 of panel of LCD; it is that the leaded light principle of light source is by LED302 light to be imported light guide plate (LGP) 306 with light emitting diode (LED) 302; via reflecting plate (reflector sheet) 305; diffuser plate (diffuser sheet) 307; prism plate (prismsheet) 309; last surface of again light being led panel of LCD 308; in traditional backlight module light at the path synoptic diagram that carries out in the structure shown in the arrow of Fig. 3; as hereinbefore; the LED302 light source is to adopt day dual wavelength white light LEDs of inferior (Nichia) patent protection, as shown in Figure 2.
So-called white light is the light that multiple blend of colors forms, the form of white light that can see with human eyes needs two kinds of light to mix at least, two wavelength light (blue light+sodium yellow) or three-wavelength light (blue light+green light+red light), commercial at present product has two wavelength blue light single-chips to add yellow (YAG) fluorescent powder, and the three-wavelength light that will be expected in future, it is to add red bluish-green (RGB) three color fluorescent powder with the ultraviolet light chip, in addition organic monolayer three-wavelength type white light LEDs also have cost low, make to be easy to advantage.
At technical elements, white light LEDs mainly is divided into 2 kinds of illumination modes at present: at present to be NICHIA be coated with last layer YAG fluorescent material 404 with the InGaN blue light emitting pipe 402 of 460nm wavelength to the main commercialization practice, utilize blue-ray LED to shine this fluorescent material with the 555nm wavelength gold-tinted of generation with the blue light complementation, mixed at the gold-tinted that utilizes lens principle with complementation, blue light, just can draw the required white light of naked eyes, white-light LED structure figure as shown in Figure 4.Second kind is that the SUMITOMO CHEMICAL electrician develops with ZnSe is the white light LEDs of material.White light LEDs is used on the illumination or the light source of LCD panel light source module, and prospect enjoys the whole world to attract attention, and many manpowers are also bet by advanced countries such as Europe, the United States and Japan, and set up special mechanism urges white light LEDs R﹠D work.And the gordian technique of white light LEDs-blue light technical patent power is grasped in minority manufacturer hands such as inferior Nichia of day at present, cause China dealer who is skillful in volume production, reduces cost to cut difficulty, so white light LEDs is limited by the popularization predicament of price at present, for the dealer who makes LCD panel light source module, also will be because of the high unit price of white light LEDs, and cause production cost to reduce.
Summary of the invention
Because in the above-mentioned background technology; traditional LCD panel light source module is to be subjected to white light LEDs that the Nichia patent the protected light source as leaded light; to cause production cost under the high competition in market, can't reduce; the invention provides a kind of replacement with the light source module of white light LEDs as light source; by at light guide plate or lamp guide surface coated mixed fluorescent powder; so can use traditional ultraviolet leds to be excited the mixed fluorescent powder of coating, and reach the effect that produces white light as light source.
A purpose of the present utility model is to provide a kind of LCD panel light source module, avoids using being subjected to white light LEDs that the Nichia patent protected as light source, so as to reducing production costs.
According to above-described purpose, the utility model provides a kind of device of white LED light source of the LCD of replacement panel light source module, it is in the structure of LCD panel light source module, the coating mixed fluorescent powder is in lamp guide or light guide plate surface, so only need reach the effect that produces white light by exciting mixed fluorescent powder with traditional ultraviolet leds as light source.
According to above-mentioned conception, wherein LCD panel light source module can be front light-source module or backlight module.
According to above-mentioned conception, wherein white light can cooperate generation with the fluorescent powder that contains the RGB fluorescent material by the LED luminotron that sends UV light.
According to above-mentioned conception, wherein white light can cooperate generation with the fluorescent powder that contains the RGB fluorescent material by the LED luminotron that sends purple light.
According to above-mentioned conception, wherein white light can cooperate generation with the fluorescent powder that contains the RG fluorescent material by the LED luminotron that sends blue light.
According to above-mentioned conception, wherein fluorescent powder system coats the incidence surface or the exiting surface of lamp guide.
According to above-mentioned conception, wherein fluorescent powder system coats the incidence surface or the exiting surface of light guide plate.
The purpose of this utility model is achieved in that promptly provides a kind of LCD front light-source module, comprises:
One light emitting diode (LED);
One lamp guide (LGS) is accepted from the emitted light of this light emitting diode, and wherein there is a phosphor powder layer on a surface of this lamp guide, during this this phosphor powder layer of light process, can inspire white light; And
One light guide plate is accepted from the emitted white light of this lamp guide.
The utility model also provides a kind of LCD front light-source module, comprises:
One light emitting diode (LED);
One lamp guide (LGS) is that acceptance is from the emitted light of this light emitting diode; And
One light guide plate is accepted from the emitted light of this lamp guide, and wherein there is a phosphor powder layer on a surface of this light guide plate, during this this phosphor powder layer of light process, can inspire white light.
The utility model provides a kind of LCD backlight module again, comprises:
One light emitting diode (LED); And
One light guide plate is accepted from the emitted light of this light emitting diode, and wherein there is a phosphor powder layer on a surface of this light guide plate, during this this phosphor powder layer of light process, can inspire white light.
Advantage of the present utility model is, the high white light emitting diode of use cost not, and can obtain good effect.
For allowing above-mentioned explanation of the present utility model and other purpose, feature and advantage more can become apparent, and hereinafter the spy lists preferred embodiment and conjunction with figs., elaborates.
Description of drawings
Figure 1A～Figure 1B is the structural drawing of traditional LC D panel front light-source module;
Fig. 2 is day dual wavelength white light LEDs spectrogram of inferior (Nichia) patent protection;
Fig. 3 is the structural drawing of traditional LC D panel backlight module;
Fig. 4 is the structural drawing of white light LEDs;
Fig. 5 A～Fig. 5 B is that the utility model uses the lamp guide surface coated that the structural drawing of the LCD panel front light-source module of fluorescent powder is arranged; And
Fig. 6 A～Fig. 6 B is that the utility model uses the light guide plate surface coated that the structural drawing of the LCD panel front light-source module of fluorescent powder is arranged.
Fig. 7 is that the utility model uses the light guide plate surface coated that the structural drawing of the LCD panel backlight module of fluorescent powder is arranged.
Symbol description:
100: traditional front light-source module
102,302: white light LEDs
104,504: lamp guide
106,306,506,606,706: light guide plate
108,308,508,708: panel of LCD
300: traditional backlight module
305,705: reflecting plate
307,707: diffuser plate
309,709: prism plate
402: the blue light emitting pipe
The 404:YAG fluorescent material
500: front light-source module of the present utility model
502,702: ultraviolet light (UV) LED
501: the incidence surface of lamp guide
503: the exiting surface of lamp guide
603,703: the exiting surface of light guide plate
700: backlight module of the present utility model
701: the incidence surface of light guide plate
Embodiment
Preferred embodiment of the present utility model, please refer to the structural drawing of the LCD panel front light-source module 500 shown in Fig. 5 A and Fig. 5 B, comprised the ultraviolet leds of using as light source 502, lamp guide (LGS) 504 at incidence surface 501 that is coated with mixed fluorescent powder or exiting surface 503, light guide plate 506, and LCD panel 508, wherein the direction shown in the arrow is exactly the path that light is walked in the front light-source module.After ultraviolet leds 502 is launched light, enter in the lamp guide 504, guiding function through indentation (not shown) in the lamp guide 504, make the light that sends as pointolite by ultraviolet leds 502 originally, through superrefraction and the reflection after after leaving lamp guide 504, becoming line source emits beam and enters light guide plate 506, again via the guiding function of indentation on the light guide plate 506, making light become area source emits beam through superrefraction and reflection and arrives on the LCD panel 508, can make human eye see white light on the LCD panel through reflection again, from figure, can know and learn that the utility model utilization is coated with the lamp guide 504 of mixed fluorescent powder at incidence surface 501 or exiting surface 503, when using traditional ultraviolet leds 502 to be used as light source, light will excite RGB fluorescent powder and makes and become white light when being coated with lamp guide 504 surface of RGB fluorescent powder.
Of the present utility model one other preferred embodiment is as shown in Fig. 6 A and Fig. 6 B, is coated with RGB fluorescent powder at the exiting surface 603 of light guide plate 606, and can utilize traditional ultraviolet leds 602 to be excited and become white light.
The utility model also is applicable to LCD panel backlight module, Fig. 7 is for using the structural drawing of the utility model LCD panel backlight module 700, incidence surface 701 or exiting surface 703 in light guide plate 706 are coated with RGB fluorescent powder, and can utilize traditional ultraviolet leds 702 to be excited and become white light.
In addition, though the above embodiments only show that being used as light source with ultraviolet leds excites the RGB fluorescent powder that is coated on lamp guide or the light guide plate to produce the white light of three-wavelength, but be not limited thereto, for example excited RGB fluorescent powder or excited RG fluorescent powder still can obtain having the white light of three-wavelength, so still more traditional Nichia dual wavelength white light has preferred color representation with blue-ray LED with purple LED.
Though the utility model is described by preferred embodiment, the utility model is not limited to the embodiment that enumerated.Apparently, other does not break away under the spirit that the utility model discloses, and the equivalence of being finished changes or modifies, and all should be included in the scope of the present utility model.In addition, all other do not break away under the spirit that the utility model discloses, and other that finished be similar and approximate to be changed or modify, and also all is included in the scope of the present utility model.Should explain scope of the present utility model with the widest definition simultaneously, so as to comprising all modifications and similar structures.
Claims (16)
1. LCD front light-source module comprises:
One light emitting diode (LED);
One lamp guide (LGS) is accepted to it is characterized in that from the emitted light of this light emitting diode there is a phosphor powder layer on a surface of this lamp guide, during this this phosphor powder layer of light process, can inspire white light; And
One light guide plate is accepted from the emitted white light of this lamp guide.
2. LCD front light-source module as claimed in claim 1 is characterized in that this light emitting diode is ultraviolet light (UV) LED, and this phosphor powder layer comprises red bluish-green (RGB) fluorescent material.
3. LCD front light-source module as claimed in claim 1 is characterized in that this light emitting diode is a purple LED, and this phosphor powder layer comprises red bluish-green (RGB) fluorescent material.
4. LCD front light-source module as claimed in claim 1 is characterized in that this light emitting diode is a blue-ray LED, and this phosphor powder layer comprises red green (RG) fluorescent material.
5. LCD front light-source module as claimed in claim 1 is characterized in that the incidence surface of this surface for this lamp guide.
6. LCD front light-source module as claimed in claim 1 is characterized in that the exiting surface of this surface for this lamp guide.
7. LCD front light-source module comprises:
One light emitting diode (LED);
One lamp guide (LGS) is that acceptance is from the emitted light of this light emitting diode; And
One light guide plate is accepted to it is characterized in that from the emitted light of this lamp guide there is a phosphor powder layer on a surface of this light guide plate, during this this phosphor powder layer of light process, can inspire white light.
8. LCD front light-source module as claimed in claim 7 is characterized in that this light emitting diode is ultraviolet light (UV) LED, and this phosphor powder layer comprises red bluish-green (RGB) fluorescent material.
9. LCD front light-source module as claimed in claim 7 is characterized in that this light emitting diode is a purple LED, and this phosphor powder layer comprises red bluish-green (RGB) fluorescent material.
10. LCD front light-source module as claimed in claim 7 is characterized in that this light emitting diode is a blue-ray LED, and this phosphor powder layer comprises red green (RG) fluorescent material.
11. LCD front light-source module as claimed in claim 7 is characterized in that the exiting surface of this surface for this light guide plate.
12. a LCD backlight module comprises:
One light emitting diode (LED); And
One light guide plate is accepted to it is characterized in that from the emitted light of this light emitting diode there is a phosphor powder layer on a surface of this light guide plate, during this this phosphor powder layer of light process, can inspire white light.
13. LCD backlight module as claimed in claim 12 is characterized in that this light emitting diode is ultraviolet light (UV) LED, this phosphor powder layer comprises red bluish-green (RGB) fluorescent material.
14. LCD backlight module as claimed in claim 12 is characterized in that this light emitting diode is a purple LED, this phosphor powder layer comprises red bluish-green (RGB) fluorescent material.
15. LCD backlight module as claimed in claim 12 is characterized in that this light emitting diode is a blue-ray LED, this phosphor powder layer comprises red green (RG) fluorescent material.
16. LCD backlight module as claimed in claim 12 is characterized in that the incidence surface of this surface for this light guiding surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02292808U CN2593229Y (en) | 2002-12-17 | 2002-12-17 | Light source module of liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02292808U CN2593229Y (en) | 2002-12-17 | 2002-12-17 | Light source module of liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2593229Y true CN2593229Y (en) | 2003-12-17 |
Family
ID=33750991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02292808U Expired - Lifetime CN2593229Y (en) | 2002-12-17 | 2002-12-17 | Light source module of liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2593229Y (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100376982C (en) * | 2004-06-02 | 2008-03-26 | 索尼株式会社 | Illuminating device and liquid crystal display device |
| CN102128377A (en) * | 2011-03-21 | 2011-07-20 | 中山伟强科技有限公司 | LED light guide plate lamp assembly |
| US8064743B2 (en) | 2007-12-19 | 2011-11-22 | Oree, Inc. | Discrete light guide-based planar illumination area |
| CN102313156A (en) * | 2010-07-02 | 2012-01-11 | 海洋王照明科技股份有限公司 | LED (Light Emitting Diode) planar light source |
| CN102345803A (en) * | 2010-07-30 | 2012-02-08 | 海洋王照明科技股份有限公司 | Light emitting diode (LED) straight pipe light source |
| US8128272B2 (en) | 2005-06-07 | 2012-03-06 | Oree, Inc. | Illumination apparatus |
| US8182128B2 (en) | 2007-12-19 | 2012-05-22 | Oree, Inc. | Planar white illumination apparatus |
| US8215815B2 (en) | 2005-06-07 | 2012-07-10 | Oree, Inc. | Illumination apparatus and methods of forming the same |
| US8231237B2 (en) | 2008-03-05 | 2012-07-31 | Oree, Inc. | Sub-assembly and methods for forming the same |
| US8272758B2 (en) | 2005-06-07 | 2012-09-25 | Oree, Inc. | Illumination apparatus and methods of forming the same |
| US8297786B2 (en) | 2008-07-10 | 2012-10-30 | Oree, Inc. | Slim waveguide coupling apparatus and method |
| US8301002B2 (en) | 2008-07-10 | 2012-10-30 | Oree, Inc. | Slim waveguide coupling apparatus and method |
| CN102767749A (en) * | 2011-05-04 | 2012-11-07 | 元太科技工业股份有限公司 | Front light module |
| US8328406B2 (en) | 2009-05-13 | 2012-12-11 | Oree, Inc. | Low-profile illumination device |
| US8591072B2 (en) | 2011-11-16 | 2013-11-26 | Oree, Inc. | Illumination apparatus confining light by total internal reflection and methods of forming the same |
| US8624527B1 (en) | 2009-03-27 | 2014-01-07 | Oree, Inc. | Independently controllable illumination device |
| US8727597B2 (en) | 2009-06-24 | 2014-05-20 | Oree, Inc. | Illumination apparatus with high conversion efficiency and methods of forming the same |
| US9857519B2 (en) | 2012-07-03 | 2018-01-02 | Oree Advanced Illumination Solutions Ltd. | Planar remote phosphor illumination apparatus |
| CN108319054A (en) * | 2018-02-13 | 2018-07-24 | 京东方科技集团股份有限公司 | A kind of total reflection display device, border component |
-
2002
- 2002-12-17 CN CN02292808U patent/CN2593229Y/en not_active Expired - Lifetime
Cited By (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100376982C (en) * | 2004-06-02 | 2008-03-26 | 索尼株式会社 | Illuminating device and liquid crystal display device |
| US8414174B2 (en) | 2005-06-07 | 2013-04-09 | Oree, Inc. | Illumination apparatus |
| US8641254B2 (en) | 2005-06-07 | 2014-02-04 | Oree, Inc. | Illumination apparatus |
| US8579466B2 (en) | 2005-06-07 | 2013-11-12 | Oree, Inc. | Illumination apparatus and methods of forming the same |
| US8128272B2 (en) | 2005-06-07 | 2012-03-06 | Oree, Inc. | Illumination apparatus |
| US8215815B2 (en) | 2005-06-07 | 2012-07-10 | Oree, Inc. | Illumination apparatus and methods of forming the same |
| US8272758B2 (en) | 2005-06-07 | 2012-09-25 | Oree, Inc. | Illumination apparatus and methods of forming the same |
| US8182128B2 (en) | 2007-12-19 | 2012-05-22 | Oree, Inc. | Planar white illumination apparatus |
| US8172447B2 (en) | 2007-12-19 | 2012-05-08 | Oree, Inc. | Discrete lighting elements and planar assembly thereof |
| US8459856B2 (en) | 2007-12-19 | 2013-06-11 | Oree, Inc. | Planar white illumination apparatus |
| US8064743B2 (en) | 2007-12-19 | 2011-11-22 | Oree, Inc. | Discrete light guide-based planar illumination area |
| US8238703B2 (en) | 2007-12-19 | 2012-08-07 | Oree Inc. | Waveguide sheet containing in-coupling, propagation, and out-coupling regions |
| US8550684B2 (en) | 2007-12-19 | 2013-10-08 | Oree, Inc. | Waveguide-based packaging structures and methods for discrete lighting elements |
| US8231237B2 (en) | 2008-03-05 | 2012-07-31 | Oree, Inc. | Sub-assembly and methods for forming the same |
| US9164218B2 (en) | 2008-07-10 | 2015-10-20 | Oree, Inc. | Slim waveguide coupling apparatus and method |
| US8301002B2 (en) | 2008-07-10 | 2012-10-30 | Oree, Inc. | Slim waveguide coupling apparatus and method |
| US8297786B2 (en) | 2008-07-10 | 2012-10-30 | Oree, Inc. | Slim waveguide coupling apparatus and method |
| US8624527B1 (en) | 2009-03-27 | 2014-01-07 | Oree, Inc. | Independently controllable illumination device |
| US8328406B2 (en) | 2009-05-13 | 2012-12-11 | Oree, Inc. | Low-profile illumination device |
| US8727597B2 (en) | 2009-06-24 | 2014-05-20 | Oree, Inc. | Illumination apparatus with high conversion efficiency and methods of forming the same |
| CN102313156B (en) * | 2010-07-02 | 2013-10-02 | 海洋王照明科技股份有限公司 | LED (Light Emitting Diode) planar light source |
| CN102313156A (en) * | 2010-07-02 | 2012-01-11 | 海洋王照明科技股份有限公司 | LED (Light Emitting Diode) planar light source |
| CN102345803A (en) * | 2010-07-30 | 2012-02-08 | 海洋王照明科技股份有限公司 | Light emitting diode (LED) straight pipe light source |
| CN102345803B (en) * | 2010-07-30 | 2014-05-07 | 海洋王照明科技股份有限公司 | Light emitting diode (LED) straight pipe light source |
| CN102128377A (en) * | 2011-03-21 | 2011-07-20 | 中山伟强科技有限公司 | LED light guide plate lamp assembly |
| CN102767749A (en) * | 2011-05-04 | 2012-11-07 | 元太科技工业股份有限公司 | Front light module |
| US8591072B2 (en) | 2011-11-16 | 2013-11-26 | Oree, Inc. | Illumination apparatus confining light by total internal reflection and methods of forming the same |
| US8840276B2 (en) | 2011-11-16 | 2014-09-23 | Oree, Inc. | Illumination apparatus confining light by total internal reflection and methods of forming the same |
| US9039244B2 (en) | 2011-11-16 | 2015-05-26 | Oree, Inc. | Illumination apparatus confining light by total internal reflection and methods of forming the same |
| US9857519B2 (en) | 2012-07-03 | 2018-01-02 | Oree Advanced Illumination Solutions Ltd. | Planar remote phosphor illumination apparatus |
| CN108319054A (en) * | 2018-02-13 | 2018-07-24 | 京东方科技集团股份有限公司 | A kind of total reflection display device, border component |
| CN108319054B (en) * | 2018-02-13 | 2020-08-25 | 京东方科技集团股份有限公司 | Total reflection display device and frame assembly |
| US11391990B2 (en) | 2018-02-13 | 2022-07-19 | Beijing Boe Optoelectronics Technology Co., Ltd. | Total reflection display device and plastic frame component |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121217 Granted publication date: 20031217 |