CN2599716Y - Luminous device - Google Patents
Luminous device Download PDFInfo
- Publication number
- CN2599716Y CN2599716Y CNU02250348XU CN02250348U CN2599716Y CN 2599716 Y CN2599716 Y CN 2599716Y CN U02250348X U CNU02250348X U CN U02250348XU CN 02250348 U CN02250348 U CN 02250348U CN 2599716 Y CN2599716 Y CN 2599716Y
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- CN
- China
- Prior art keywords
- light
- emitting device
- guide plate
- emitting diode
- light guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
A light-producing device for LCD comprises a light guiding board and multiple LEDs. Multiple grooves or concave holes are arranged on at least one side surface of the light guiding board. The light-producing device also comprises multiple packaged colloids. The LEDs are sealed in the grooves or concave holes by the colloids. Compared to the present technology device, the light producing device has the advantages of high light utilization ratio, small volume and easy to assemble.
Description
[technical field]
The utility model relates to a kind of light-emitting device that is used for LCD.
[background technology]
Usually adopt the light-emitting device of forming by light guide plate and light source (front light-source or backlight) in the LCD as the display lighting light source.Light source is the plane of incidence setting of relative light guide plate, the transmission of the light beam that this light-guide plate guides is sent from light source, line source (being generally cold-cathode fluorescence lamp) or pointolite (being generally light emitting diode) issued light bundle are evenly distributed to the exiting surface of whole light guide plate and form an even planar light source, thereby provide illumination for LCD.
In the prior art, light guide plate is to utilize polycarbonate, polymethylmethacrylate to be material, a plurality of sites that distribute, its bottom surface, be used for the total reflection condition of broken beam in the light guide plate internal transmission, and make beam divergence improve the homogeneity of light guide plate outgoing beam, and then promote the overall performance of light-emitting device.
Please refer to Fig. 1, a kind of light-emitting device of prior art can be consulted No. the 98206129.3rd, the Chinese utility model patent of on November 10th, 1999 bulletin, and this light-emitting device 1 comprises light emitting diode 11, circuit board 12 and light guide plate 13.This light emitting diode 11 is installed on the circuit board 12, constitutes light source, and its periphery is provided with moulding glue material 15 and is used for fixing, and moulding glue material 15 can be materials such as plastics or resin.These light guide plate 13 sides are provided with groove 14, and its position is corresponding with the light emitting diode 11 on the circuit board 12.During assembling, this light emitting diode 11 can be fastened in the groove 14, and then light emitting diode 11 issued lights are imported light guide plate 13 these light-emitting devices 1 of formation.
But above-mentioned light-emitting device 1 has following defective.Though this moulding glue material 15 is fixed on light emitting diode 11 on the circuit board 12, himself can absorb light emitting diode 11 issued light bundles, thereby influence light transmission rate, cause optical loss.And this light emitting diode 11 is fixed on circuit board 12, makes the light source overall volume increase.During assembling, need first illuminated in combination diode 11 and circuit board 12, populated circuit board 12 and light guide plate 13 again, complex steps and consuming time.
Therefore, provide a kind of light-emitting device of above shortcoming that improves in fact for necessary.
[utility model content]
Prior art light source luminescent utilization factor is low in order to overcome, volume reaches the loaded down with trivial details defective of assembling greatly, and the utility model provides a kind of light source utilization factor height, volume is little and assemble simple light-emitting device.
The technical scheme that the utility model technical solution problem adopts is: provide a light-emitting device it comprise a light guide plate and a plurality of light emitting diode, at least one side of this light guide plate is provided with a plurality of grooves or shrinkage pool, wherein, this light-emitting device further comprises a plurality of packing colloids, these a plurality of packing colloids should a plurality of light emitting diode sealing and fixing in corresponding recesses or shrinkage pool.
Compared with prior art, the utlity model has following advantage: this light-emitting device is to utilize packing colloid light emitting diode to be sealed in the groove or shrinkage pool of light guide plate side, light emitting diode is outer need not to add the moulding glue material, the light that sends from light source can directly enter the light guide plate, avoided the loss that moulding glue material absorbing light is caused in the prior art, thereby improve the light source utilization factor, and light emitting diode is fixed on circuit board compared to prior art, this light-emitting device does not need to adopt circuit board, thereby volume is little, and is easy to assembly.
[description of drawings]
Fig. 1 is a kind of three-dimensional exploded view of light-emitting device of prior art.
Fig. 2 is the sectional view of the utility model light-emitting device first embodiment.
Fig. 3 is the sectional view of the utility model light-emitting device second embodiment.
Fig. 4 is the schematic perspective view of the light guide plate of the utility model light-emitting device.
Fig. 5 is the schematic perspective view of another embodiment of light guide plate of the utility model light-emitting device.
[embodiment]
Please refer to Fig. 2, first embodiment of the utility model light-emitting device, this light-emitting device 2 comprises a light guide plate 27, a plurality of light emitting diode 23, a plurality of fluorescence coating 24, a plurality of packing colloid 25, lead 22, negative electrode 21 and anode 26.
Wherein, the side of this light guide plate 27 is provided with a plurality of grooves 28, this light emitting diode 23 is installed in this groove 28, so that light is imported in this light guide plate 27, this packing colloid 25 is used for fixing this light emitting diode 23 of sealing, and this fluorescence coating 24 is formed on this groove 28 surfaces, and it absorbs light emitting diode 23 issued light bundles and is translated into fluorescence, the color of fluorescence can be according to different demands, by the fluorescent powder acquisition of allotment various combination.This light emitting diode 23 and lead 22 are electrically connected, and lead 22 is connected in negative electrode 21 and anode 26, for light emitting diode 23 provides working current.
The shape of this light guide plate 27 can be plate shaped or wedge shape, the surface thereof a plurality of sites (figure do not show) that can distribute, be used for the total reflection condition of broken beam in light guide plate 27 internal transmission, and make beam divergence improve the homogeneity of light guide plate 27 outgoing beams, and then promote the overall performance of light-emitting device 2.The density of this site, size all can have different designs so that adapt to different light-emitting devices.
Seeing also Fig. 3, is second embodiment of the utility model light-emitting device.The structure of this light-emitting device 3 and light-emitting device 2 shown in Figure 2 is slightly different, and it comprises a light guide plate 37, a plurality of light emitting diode 33, a plurality of fluorescence coating 34, a plurality of packing colloid 35, lead 32, negative electrode 31 and anode 36.
Two sides of this light guide plate 37 all offer groove 38, can hold light emitting diode 33 therein, import light-emitting device 3 because of two sides all have light, its structural symmetry, thereby glorious degrees and uniformity coefficient increase than light-emitting device 2.This groove 38 imports in this light guide plate 37 light emitting diode 33 issued light lines, this packing colloid 35 is used for fixing this light emitting diode 33 of sealing, this fluorescence coating 34 is formed on this groove 38 surfaces, and it absorbs light emitting diode 33 issued light bundles and is translated into fluorescence.This light emitting diode 33 and lead 32 are electrically connected, and lead 32 is connected in negative electrode 31 and anode 36, for light emitting diode 33 provides working current.
Seeing also Fig. 4, is the schematic perspective view of the light guide plate of the utility model light-emitting device, and a plurality of grooves 42 can be offered in the side of this light guide plate 41, holding a light emitting diode respectively, and makes light beam import light guide plate 41.
Seeing also Fig. 5, is the schematic perspective view of the another kind of embodiment of light guide plate of the utility model light-emitting device, and a plurality of shrinkage pools 52 can be offered in the side of this light guide plate 51, holding a light emitting diode respectively, and makes light beam import light guide plate 51.
The groove of light guide plate side or shrinkage pool can utilize the injection moulding of mould or methods such as die casting and machining to form, the quantity of groove or shrinkage pool can require to increase and decrease with briliancy, and the shape of groove or shrinkage pool can be square shape, cuboid, semiellipse sphere, spheroidal or other shape.
During assembling, at first in groove or shrinkage pool, lay fluorescent powder, different demands according to colourity, can lay the fluorescent powder of various combination, fluorescent powder need be paved with the groove inwall, utilize be heating and curing with fluorescent powder curing on the groove inwall so that form fluorescence coating, light emitting diode is installed in groove or the shrinkage pool again, make light-emitting area towards fluorescence coating, utilize packing colloid to fix and get final product.
Claims (7)
1. light-emitting device, it comprises: a light guide plate and a plurality of light emitting diode, at least one side of this light guide plate is provided with a plurality of grooves or shrinkage pool, it is characterized in that: this light-emitting device further comprises a plurality of packing colloids, these a plurality of packing colloids should a plurality of light emitting diode sealing and fixing in corresponding recesses or shrinkage pool.
2. light-emitting device as claimed in claim 1 is characterized in that this light-emitting device further comprises a fluorescence coating, and this fluorescence coating is formed on the surface of corresponding recesses or shrinkage pool.
3. light-emitting device as claimed in claim 2 is characterized in that this fluorescence coating can be made up of the fluorescent powder of various combination.
4. light-emitting device as claimed in claim 1, the shape that it is characterized in that this groove can be the square bodily form, cuboid, semiellipse sphere or semisphere.
5. light-emitting device as claimed in claim 1 is characterized in that this light guide plate can be a wedge shape or plate shaped.
6. light-emitting device as claimed in claim 1 is characterized in that a surface of this light guide plate is provided with the site.
7. light-emitting device as claimed in claim 1 is characterized in that this light-emitting device further comprises a negative electrode and an anode that is used for to this light emitting diode power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU02250348XU CN2599716Y (en) | 2002-12-13 | 2002-12-13 | Luminous device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU02250348XU CN2599716Y (en) | 2002-12-13 | 2002-12-13 | Luminous device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2599716Y true CN2599716Y (en) | 2004-01-14 |
Family
ID=34149498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU02250348XU Expired - Lifetime CN2599716Y (en) | 2002-12-13 | 2002-12-13 | Luminous device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2599716Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100345315C (en) * | 2004-03-12 | 2007-10-24 | 友达光电股份有限公司 | Light source module |
| CN101893190A (en) * | 2010-07-14 | 2010-11-24 | 深圳市华星光电技术有限公司 | Local dimming backlight module and liquid crystal display applying same |
| CN101532642B (en) * | 2008-03-13 | 2011-05-18 | 启萌科技有限公司 | Luminescence unit |
| CN102565921A (en) * | 2012-02-16 | 2012-07-11 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module and liquid crystal display device |
| CN104335087A (en) * | 2011-12-30 | 2015-02-04 | 可隆工业株式会社 | Light guide plate and method of manufacturing the same |
| CN104930375A (en) * | 2015-06-19 | 2015-09-23 | 武汉华星光电技术有限公司 | Quantum tube light emitting device, backlight module and liquid crystal display |
| CN109387980A (en) * | 2018-12-03 | 2019-02-26 | 福建捷联电子有限公司 | A kind of novel quantum dot backing structure |
-
2002
- 2002-12-13 CN CNU02250348XU patent/CN2599716Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100345315C (en) * | 2004-03-12 | 2007-10-24 | 友达光电股份有限公司 | Light source module |
| CN101532642B (en) * | 2008-03-13 | 2011-05-18 | 启萌科技有限公司 | Luminescence unit |
| CN101893190A (en) * | 2010-07-14 | 2010-11-24 | 深圳市华星光电技术有限公司 | Local dimming backlight module and liquid crystal display applying same |
| CN101893190B (en) * | 2010-07-14 | 2013-04-24 | 深圳市华星光电技术有限公司 | Local dimming backlight module and liquid crystal display applying same |
| US8625051B2 (en) | 2010-07-14 | 2014-01-07 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Liquid crystal display and backlight module for the same |
| CN104335087A (en) * | 2011-12-30 | 2015-02-04 | 可隆工业株式会社 | Light guide plate and method of manufacturing the same |
| CN102565921A (en) * | 2012-02-16 | 2012-07-11 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module and liquid crystal display device |
| CN104930375A (en) * | 2015-06-19 | 2015-09-23 | 武汉华星光电技术有限公司 | Quantum tube light emitting device, backlight module and liquid crystal display |
| CN109387980A (en) * | 2018-12-03 | 2019-02-26 | 福建捷联电子有限公司 | A kind of novel quantum dot backing structure |
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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: 20121213 Granted publication date: 20040114 |