CN2798233Y - LED side back light source - Google Patents
LED side back light source Download PDFInfo
- Publication number
- CN2798233Y CN2798233Y CN 200520024202 CN200520024202U CN2798233Y CN 2798233 Y CN2798233 Y CN 2798233Y CN 200520024202 CN200520024202 CN 200520024202 CN 200520024202 U CN200520024202 U CN 200520024202U CN 2798233 Y CN2798233 Y CN 2798233Y
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- China
- Prior art keywords
- led
- light source
- emitting diode
- light emitting
- side back
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Abstract
The utility model relates to a side back light source of an LED, which mainly solves the problems that the brightness of the side back light source of the existing LED is low and uneven, product size is not suitable for big production, etc. The side back light source of the LED comprises a light guiding plate, a reflective membrane behind the light guiding plate and the LED, wherein both side surfaces of the light guiding plate are provided with inserting holes of the LED, and the LED is fixed in the inserting holes; the back surface of the light guiding plate is in screen printing with mesh points which are densely distributed. The side back light source of the LED can be made into large size, the width of the light source can be maximally made into 1500 mm and the length of the light source can be arbitrarily regulated according to requirements. The utility model has the advantages of high brightness, easy regulation, symmetrical light emitting, long service life, low brightness decay, low voltage requirement of the end of the LED, simple power supply of the LED and convenient use. The side back light source of the LED can be widely used for the fields of fire-fighting emergency light fixtures, advertisements, plate frames, liquid display screens, etc.
Description
Technical field
The utility model relates to a kind of luminophor, is specially light emitting diode side backlight.
Background technology
Backlight is made of the reflective membrane and the light source of light guide plate, light guide plate back.Existing backlight has following three kinds of versions: 1, EL (electroluminescence) backlight; 2, CCFL (cold cathode luminotron) backlight; 3, LED (light emitting diode) backlight, the LED-backlit source is divided into side backlight and end backlight again.
The EL back light source brightness is even, and brightness can adjust, but its power supply needs the alternating current of 200-1000HZ, and the inverter volume that satisfies this requirement is bigger, and efficient is low; The variation with frequency of this kind backlight surface color, brightness and life-span changes, and under the identical condition of voltage, frequency is high more, brightness is high more, color is light more, the life-span is short more.Therefore, not only inverter structure complexity, volume are big for it, and the life-span is wayward, and brightness decay is more serious.
The CCFL backlight is a light source because of adopting CCFL, so its brightness is higher, power is bigger.But because of CCFL is bar-shaped type fluorescent tube, the utilization factor of its light is lower.CCFL adopts the high-frequency and high-voltage power supply, its power supply complex structure, and complex manufacturing, the life-span is shorter relatively.
Back light source brightness can be done very highly and even at the bottom of the LED, but all arranges in light guide plate bottom because of its light source, thus the size of backlight can't be done greatly, and its power is very big.
Existing LED side backlight, its light emitting diode adopts non-embedded structure, so its product brightness is low and inhomogeneous, product size is unfit to do greatly (400mm * 400mm is following), consistance is poor in batches.
Summary of the invention
The utility model solves mainly that existing LED side back light source brightness is low and inhomogeneous, product size is unfit to do problems such as big, and a kind of light emitting diode side backlight of new structure is provided.
The utility model is to adopt following technical scheme to realize: light emitting diode side backlight, the reflective membrane and the light emitting diode that comprise light guide plate, light guide plate back, the two sides of light guide plate have the embedded hole of light emitting diode, and light emitting diode is fixed in the embedded hole; The serigraphy of the light guide plate back side has densely covered site.Light emitting diode is embedded in the embedded hole of light guide plate side, can increase the transmission range of light on light guide plate, to increase the size, particularly backlight width of backlight; Reflex is played to light in the site of gathering in the light guide plate back side, make backlight under large-size luminous evenly.
Light emitting diode side backlight described in the utility model can be made into bigger size, and its width maximum can be accomplished 1500mm, and length can be adjusted arbitrarily as required; High and the easily adjustment of its brightness, it is luminous that evenly the life-span is long, and brightness decay is low, and low to the requirement of LED light emitting diode terminal voltage, the power supply of light emitting diode is simple, and is easy to use.This light emitting diode side backlight can be widely used in fields such as fire emergency lamps, advertisement, frame, LCDs.
Description of drawings
Fig. 1 is the structural representation of light emitting diode side backlight described in the utility model;
Fig. 2 is the vertical view of Fig. 1;
Embodiment
Light emitting diode side backlight comprises the reflective membrane 2 and the light emitting diode 3 of light guide plate 1, light guide plate back, and the two sides of light guide plate 1 have the embedded hole 4 of light emitting diode, and light emitting diode 3 is fixed in the embedded hole 4; The serigraphy of the light guide plate back side has densely covered site 5.
During concrete enforcement, light guide plate adopts white pmma plate, polystyrene plate or polycarbonate sheet usually.
Serigraphy is existing processes well known, and there is not difficulty in screen print lattice-point at the light guide plate back side, adopts white ink during silk-screen.
The site that is positioned at the light guide plate middle part is big, and the site that is positioned at both sides is little.Like this, can reflect light better, make the luminous more even of backlight.
The light emitting diode of light guide plate both sides is connected and fixed on respectively on the printed circuit board (PCB) 6, and printed circuit board (PCB) 6 fixing (as cementation) is in the light guide plate two sides (light emitting diode aligning embedded hole).Realize light emitting diode is positioned in the embedded hole with this structure, it is more reasonable, simple to be fixed in the embedded hole inner structure separately than each light emitting diode, easier realization.
Light emitting diode adopts and is connected in series.Like this, adjust the brightness of backlight easily, and to the terminal voltage no requirement (NR) of light emitting diode.
But coated with silver pastes or other light-proof material around backlight, and particularly the light that causes of both sides light emitting diode luminous point is inhomogeneous to block the backlight edge.Make the light-emitting zone of backlight more even, attractive in appearance.
During use, can paste panel (as advertisement picture, photo, fire-fighting emergent sign etc.) in the front of backlight, the figure on the panel can design arbitrarily or select voluntarily.Under the irradiation of backlight, the figure on the abundant display panel.
Claims (5)
1, a kind of light emitting diode side backlight, the reflective membrane (2) and the light emitting diode (3) that comprise light guide plate (1), light guide plate back, it is characterized by: the two sides of light guide plate (1) have the embedded hole (4) of light emitting diode, and light emitting diode (3) is fixed in the embedded hole (4); The serigraphy of the light guide plate back side has densely covered site (5).
2, light emitting diode side backlight as claimed in claim 1 is characterized by: the site that is positioned at the light guide plate middle part is big, and the site that is positioned at both sides is little.
3, light emitting diode side backlight as claimed in claim 1 or 2 is characterized by: the light emitting diode of light guide plate both sides is connected and fixed on respectively on the printed circuit board (PCB) (6), and printed circuit board (PCB) (6) is fixed in the light guide plate two sides.
4, light emitting diode side backlight as claimed in claim 1 or 2 is characterized by: light emitting diode adopts and is connected in series.
5, light emitting diode side backlight as claimed in claim 3 is characterized by: light emitting diode adopts and is connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520024202 CN2798233Y (en) | 2005-06-02 | 2005-06-02 | LED side back light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520024202 CN2798233Y (en) | 2005-06-02 | 2005-06-02 | LED side back light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2798233Y true CN2798233Y (en) | 2006-07-19 |
Family
ID=36869479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520024202 Expired - Fee Related CN2798233Y (en) | 2005-06-02 | 2005-06-02 | LED side back light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2798233Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128377A (en) * | 2011-03-21 | 2011-07-20 | 中山伟强科技有限公司 | LED light guide plate lamp assembly |
| CN102691918A (en) * | 2012-06-15 | 2012-09-26 | 昆山翰辉电子科技有限公司 | Colored plane LED (light emitting diode) lamp |
| CN103104822A (en) * | 2011-11-15 | 2013-05-15 | 敦南科技（无锡）有限公司 | Illuminant assembly |
| CN105403950A (en) * | 2016-01-05 | 2016-03-16 | 京东方科技集团股份有限公司 | LGP (light guide plate) and manufacture method thereof, array substrate and manufacture method thereof and a display device |
| CN111857388A (en) * | 2019-04-18 | 2020-10-30 | 哈帝斯科技股份有限公司 | Multi-light source luminous mouse pad |
-
2005
- 2005-06-02 CN CN 200520024202 patent/CN2798233Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128377A (en) * | 2011-03-21 | 2011-07-20 | 中山伟强科技有限公司 | LED light guide plate lamp assembly |
| CN103104822A (en) * | 2011-11-15 | 2013-05-15 | 敦南科技（无锡）有限公司 | Illuminant assembly |
| CN103104822B (en) * | 2011-11-15 | 2016-01-20 | 敦南科技（无锡）有限公司 | A kind of light source assembly |
| CN102691918A (en) * | 2012-06-15 | 2012-09-26 | 昆山翰辉电子科技有限公司 | Colored plane LED (light emitting diode) lamp |
| CN105403950A (en) * | 2016-01-05 | 2016-03-16 | 京东方科技集团股份有限公司 | LGP (light guide plate) and manufacture method thereof, array substrate and manufacture method thereof and a display device |
| US10459153B2 (en) | 2016-01-05 | 2019-10-29 | Boe Technology Group Co., Ltd. | Light guide plate and fabricating method thereof, array substrate and fabricating method thereof, and display device |
| CN111857388A (en) * | 2019-04-18 | 2020-10-30 | 哈帝斯科技股份有限公司 | Multi-light source luminous mouse pad |
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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: 20060719 |