CN203797566U - Micro reflection structure of direct type LED backlight module - Google Patents
Micro reflection structure of direct type LED backlight module Download PDFInfo
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- CN203797566U CN203797566U CN201420109900.5U CN201420109900U CN203797566U CN 203797566 U CN203797566 U CN 203797566U CN 201420109900 U CN201420109900 U CN 201420109900U CN 203797566 U CN203797566 U CN 203797566U
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- reflection structure
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Abstract
The utility model relates to a micro reflection structure of a direct type LED backlight module. The micro reflection structure is arranged at the portion, between LED light sources, of a PCB substrate below the backlight module and provided with two or more triangular reflection columns with the sections being shaped like isosceles triangles. The bottom surfaces of the triangular reflection columns are attached to the PCB substrate. According to the micro reflection structure, the full reflection effect of a diffusion light guide plate is weakened, light loss of LEDs is reduced, the light utilization rate of the LEDs is increased, the brightness is improved, the brightness of an LED displayer is distributed uniformly, and therefore light distribution design is optimized. In addition, the micro reflection structure is simple in structure and easy to process.
Description
Technical field:
The utility model relates to LED-backlit source technology field, refers in particular to a kind of micro-reflection structure of direct-light type LED backlight module.
Background technology:
The LED-backlit modular structure of main flow is divided into according to LED difference of placement location in backlight module at present: side entering type and straight-down negative.Direct-light type LED backlight module is directly to utilize space length to realize light evenly to mix, light source and PCB are placed in to backlight bottom, light is from LED penetrates, the diffusion sheet in the direct directive of mid portion front, remainder is by the optical reflection structure on bottom and four limits, then the diffusion sheet on directive surface, then by brightness enhancement film, penetrates equably.Orthoscopic LED-backlit source is applied on middle large scale liquid crystal display.
But in the design of current backlight source module, in receiving screen center, there is a very significantly dark space, the requirement that only can not meet optical property to single diffusion unit modular design is described, still there is part light to be limited to the total reflection effect of diffusing light guiding plate, effectively do not arrive on receiving screen, and the light number of center is less, thereby produced dark space, obvious center.
Utility model content:
The purpose of this utility model is to overcome the above-mentioned weak point of prior art, and a kind of micro-reflection structure of direct-light type LED backlight module is provided, and weakens the total reflection effect of the second diffusing light guiding plate, optimizes luminous intensity distribution design, the optical property needing in the hope of reaching demonstration.
The utility model is realized the technical scheme that its object adopts: a kind of micro-reflection structure of direct-light type LED backlight module, this micro-reflection structure is arranged on the PCB substrate of backlight module below, between LED light source, this micro-reflection structure has the three corner reflection posts that at least two cross sections are isosceles triangle shape, and the bottom surface of this three corner reflections post is attached on PCB substrate.
Preferably, the base angle, cross section of described three corner reflection posts is 30 ° ± 1 °, and base, cross section length is 1mm ± 0.1mm.
Described micro-reflection structure is several three corner reflections posts that are crossing distribution, and this cross area is arranged on the center of PCB substrate.
The utility model can weaken the total reflection effect of diffusing light guiding plate, reduces the light loss of LED, improves LED light utilization efficiency, increases brightness, makes the light-emitting diode display can illuminance distribution, thereby can optimize luminous intensity distribution design; And the utility model is simple in structure, handling ease.
Accompanying drawing explanation:
Fig. 1 is the utility model micro-reflection structure enlarged diagram;
Fig. 2 is the schematic diagram of a kind of embodiment of the utility model.
The specific embodiment:
Below in conjunction with specific embodiments and the drawings, the utility model is further illustrated.
As shown in Figure 1 and Figure 2, described in the utility model is a kind of micro-reflection structure of direct-light type LED backlight module, this micro-reflection structure is arranged on backlight module below PCB substrate 1, between LED light source 2, this micro-reflection structure has the three corner reflection posts 3 that at least two cross sections are isosceles triangle shape, and the bottom surface of this three corner reflections post 3 is attached on PCB substrate 1.Preferably, the base angle, cross section of described three corner reflection posts 3 is 30 ° ± 1 °, and base, cross section length is 1mm ± 0.1mm, and base angle, cross section and base, cross section length etc. can design according to specific needs more certainly, and the entire length of three corner reflection posts 3 is also determined as required.
As shown in Figure 2, described micro-reflection structure is several three corner reflections posts 3 that are crossing distribution, this cross area is arranged on the center of PCB substrate 1, in the present embodiment, three corner reflection posts are monoblock type moulding, can certainly be segmentation structure, be distributed in two mid line region N, M of PCB substrate 1.
It is example that the utility model be take a certain LED light source model and backlight source module unit module, it is 2.8mm * 3.1mm * 2mm that LED light source moulded dimension is set, light-emitting area is the disc of Φ 2.6mm, directly over transmit direction is, for lambert's type white light source, luminous half angle is 60 °, and it is 12lm that emitting light flux is set.Below PCB substrate is of a size of 60mm * 50mm * 10mm, the 7 LEDs light sources that distributing above, and the Main Function of PCB substrate is fixed L ED light source, cloth circuits and LED heat radiation channel etc. is provided.
At backlight source module amalgamation N, M region, arrange quantity triangular prism catoptric arrangement not etc., to reach dark space, weakening center, improve the object of the uniformity.By adding micro-reflection structure, the uniformity of backlight source module gets a promotion.The uniformity of backlight source module is not from adding 71.43% of micro-reflection structure to be increased to 88.17% at first.Regulate after (N, M) value, on illumination figure, hot spot display effect obtains larger improvement, thereby improves LED light utilization efficiency, the brightness that improves backlight, the light uniformity of raising light-emitting diode display;
The utility model can weaken the total reflection effect of diffusing light guiding plate, reduces the light loss of LED, improves LED light utilization efficiency, increases brightness, makes the light-emitting diode display can illuminance distribution, thereby can optimize luminous intensity distribution design; And the utility model is simple in structure, handling ease.
More than just the utility model has been carried out to exemplary explanation, specific implementation of the present utility model is not limited to this.The insubstantial modifications that any employing design of the present utility model and technical scheme are carried out, all within protection domain of the present utility model.
Claims (3)
1. the micro-reflection structure of a direct-light type LED backlight module, it is characterized in that: this micro-reflection structure is arranged on the PCB substrate of backlight module below, between LED light source, this micro-reflection structure has the three corner reflection posts that at least two cross sections are isosceles triangle shape, and the bottom surface of this three corner reflections post is attached on PCB substrate.
2. the micro-reflection structure of direct-light type LED backlight module according to claim 1, is characterized in that: the base angle, cross section of described three corner reflection posts is 30 ° ± 1 °, and base, cross section length is 1mm ± 0.1mm.
3. the micro-reflection structure of direct-light type LED backlight module according to claim 1, is characterized in that: described micro-reflection structure is several three corner reflections posts that are crossing distribution, and this cross area is arranged on the center of PCB substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420109900.5U CN203797566U (en) | 2014-03-11 | 2014-03-11 | Micro reflection structure of direct type LED backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420109900.5U CN203797566U (en) | 2014-03-11 | 2014-03-11 | Micro reflection structure of direct type LED backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203797566U true CN203797566U (en) | 2014-08-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420109900.5U Expired - Fee Related CN203797566U (en) | 2014-03-11 | 2014-03-11 | Micro reflection structure of direct type LED backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203797566U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021000472A1 (en) * | 2019-07-01 | 2021-01-07 | 武汉华星光电技术有限公司 | Mini led backlight panel and backlight module |
-
2014
- 2014-03-11 CN CN201420109900.5U patent/CN203797566U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021000472A1 (en) * | 2019-07-01 | 2021-01-07 | 武汉华星光电技术有限公司 | Mini led backlight panel and backlight module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20160311 |