CN205229620U - Backlight module - Google Patents
Backlight module Download PDFInfo
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- CN205229620U CN205229620U CN201521037267.4U CN201521037267U CN205229620U CN 205229620 U CN205229620 U CN 205229620U CN 201521037267 U CN201521037267 U CN 201521037267U CN 205229620 U CN205229620 U CN 205229620U
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- light
- guide plate
- reflective membrane
- shaded
- backlight module
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Abstract
The utility model is suitable for a backlight module, including light guide plate, reflective membrane and LED wick, the light guide plate is including the projected light portion and the portion in a poor light that link to each other, projected light portion with a turning has between the portion of being shaded, the LED wick sets firmly keeps away from in projected light portion the one end of the portion of being shaded, the reflective membrane covers the lower surface of the portion of being shaded, corner's outline of light guide plate is the arc. The projected light portion and the corner's outline between the portion of being shaded of light guide plate are the arc, follow the curved reflection of the light process back that projected light portion shines, and most light can not be on a parallel with the reflective membrane, but gathering directive reflective membrane, the process reflective membrane reflects a portion of being shaded again for the luminance of the portion of being shaded improves greatly, consequently, not changing expensive, hi -lite LED wick and not increasing under the condition of wick quantity, carry the high back optical property, practice thrift manufacturing cost.
Description
Technical field
The utility model belongs to LED (LightEmittingDiode, light emitting diode) backlight technology field, particularly relates to a kind of side edge bottom projection-type backlight module of LED lamp.
Background technology
Backlight is that a kind of form of illumination is used in the display of liquid crystal display (LiquidCrystalDisplay is called for short LCD).They are used to be increased in the brightness on illuminance in low lighting environment and computer monitor, liquid crystal screen display, and backlight module is then located at LCD rear except providing light, and very uniform light source is originally changed into the plate body providing uniform light.
As shown in Figure 1, existing side edge bottom projection-type backlight module mainly comprises LED lamp 1, light guide plate 2, reflectance coating 3 and light-diffusing film 4.Reflectance coating 3 covers below light guide plate 2, and light-diffusing film 4 covers above light guide plate.The light (straight line as with arrow in Fig. 1) that LED lamp 1 sends, by the corner slant reflection of light guide plate 2, light is imported to the even smooth region of horizontal direction, protruding site (not shown) is had bottom light guide plate 2, light is after the reflection of site and reflectance coating 3, penetrate from light-diffusing film 4, realize backlight lightening.Although above-mentioned backlight module result is simple, cost is lower, and light most of light ray parallel after slant reflection, in reflective membrane 3, not through the reflection of reflectance coating 3, makes backlight module brightness lower.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of backlight module, can assemble and reflect more light, greatly improving brightness.
The utility model is a kind of backlight module realized like this, comprise light guide plate, reflective membrane and LED lamp, described light guide plate comprises connected light projection unit and back light part, there is between described light projection unit and described back light part a turning, described LED lamp is installed in light projection unit one end away from described back light part, described reflective membrane covers the lower surface of described back light part, and corner's outline of described light guide plate is arc.
Further, the spacing between the upper and lower surface of described back light part reduces gradually along the direction away from described light projection unit.
Further, the upper surface of described back light part keeps level, and its lower surface is obliquely installed.
Further, described backlight module also comprises light-diffusing film, and described light-diffusing film covers the upper surface of described back light part.
Compared with prior art, a kind of backlight module of the present utility model, corner's outline between the light projection unit of light guide plate and back light part is arc, the light of coming is irradiated after the reflection of arc from light projection unit, major part light all can not be parallel to reflective membrane, but assemble directive reflective membrane, then reflect back light part through reflective membrane, the brightness of back light part is improved greatly; Therefore, when not changing high cost, high-brightness LED wick and not increasing wick quantity, backlight performance can be improved, save production cost.
Accompanying drawing explanation
Fig. 1 is the back light module unit structure schematic diagram that prior art provides.
Fig. 2 is the back light module unit structure schematic diagram that the utility model embodiment provides.
Embodiment
In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 2, be a kind of backlight module of a preferred embodiment of the present utility model, comprise light guide plate 10, reflective membrane 20, light-diffusing film 30 and LED lamp 40.Light guide plate 10 comprises by the light projection unit 11 be connected and back light part 12, has a turning between light projection unit 11 and back light part 12, and corner's outline is arc.LED lamp 40 is installed in light projection unit 11 one end away from back light part 12, and light-diffusing film 30 covers the upper surface of back light part 12, and reflective membrane 20 covers the lower surface of back light part 12.
Particularly, the upper surface of back light part 12 keeps level, and the spacing between upper and lower surface reduces gradually along the direction away from light projection unit 11.Like this, light (straight line as with arrow in Fig. 2) can formation reflection repeatedly light guide plate 10 in, and more light can reflect back light part 12, few light loss through reflectance coating 20.In actual production process, increase back light part 12 near the spacing on the upper and lower surface at turning, be then reduced to normal separation gradually.
Compared with prior art, a kind of backlight module of the present utility model, the corner's outline between the light projection unit 11 of light guide plate 10 and back light part 12 is arc.Irradiate the light of coming after the reflection of arc from light projection unit 11, most of light all can not be parallel to reflective membrane 20, but assembles directive reflective membrane 20, then reflects back light part 12 through reflective membrane 20, and the brightness of back light part 12 is improved greatly.Therefore, when not changing high cost, high-brightness LED wick and not increasing wick quantity, improve backlight performance, save production cost.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. a backlight module, comprise light guide plate, reflective membrane and LED lamp, described light guide plate comprises connected light projection unit and back light part, there is between described light projection unit and described back light part a turning, described LED lamp is installed in light projection unit one end away from described back light part, described reflective membrane covers the lower surface of described back light part, it is characterized in that, corner's outline of described light guide plate is arc.
2. backlight module as described in claim 1, is characterized in that, the spacing between the upper and lower surface of described back light part reduces gradually along the direction away from described light projection unit.
3. backlight module as described in claim 2, is characterized in that, the upper surface of described back light part keeps level, and its lower surface is obliquely installed.
4. as the backlight module in claims 1 to 3 as described in any one, it is characterized in that, described backlight module also comprises light-diffusing film, and described light-diffusing film covers the upper surface of described back light part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521037267.4U CN205229620U (en) | 2015-12-11 | 2015-12-11 | Backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521037267.4U CN205229620U (en) | 2015-12-11 | 2015-12-11 | Backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205229620U true CN205229620U (en) | 2016-05-11 |
Family
ID=55904675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521037267.4U Active CN205229620U (en) | 2015-12-11 | 2015-12-11 | Backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205229620U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116559994A (en) * | 2023-05-31 | 2023-08-08 | 青岛鼎信通讯股份有限公司 | Backlight module and electric energy meter |
-
2015
- 2015-12-11 CN CN201521037267.4U patent/CN205229620U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116559994A (en) * | 2023-05-31 | 2023-08-08 | 青岛鼎信通讯股份有限公司 | Backlight module and electric energy meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000, 39 Jin Yuan Road, Henggang street, Shenzhen street, Longgang District, Guangdong, China Patentee after: Akita Shenzhen microelectronics Limited by Share Ltd Address before: 518000, 39 Jin Yuan Road, Henggang street, Shenzhen street, Longgang District, Guangdong, China Patentee before: Shenzhen AV-Display Co., Ltd. |