LGP in LED Light Panel: What It Is And Why You Need It?
Sep 17, 2022
An LED panel with LGP is a great choice for businesses and organizations that want to make a big impact with their signage. LGP stands for the light guide plate, and it is used in LED panels to direct light evenly across the surface of the panel. This results in brighter, more uniform lighting and allows your graphics to look their best. In this blog post, we will discuss the benefits of using an LED panel with LGP and why you need it for your business!
What is LGP？
Light Guide Plate (LGP) is a transparent acrylic panel made of optical PMMA, PS, or a combination of two resins (then known as MS Materials). It works by directing light from the edges and distributing it evenly across the upper surface of the panel.
Classification of Light Guide Plate
Generally, light guide plate has different classification because of their shape, manufacturing method, and function, but there is no uniform classification at present. After finishing, the classification of the light guide plate is probably as follows
According to the shape: flat and wedge-shaped plate (oblique plate)
Flat: light guide plate from the light into the view of the rectangle.
Wedge-shaped plate: from the light into the side of the view for a thick side for the thin side of the wedge (triangle) shape.
According to the way the network production: printing and non-printing printing
Printing type: light guide plate to complete the shape of the processing, to print the network printed on the reflective surface。
Non-printing type: the network in the light guide plate forming directly formed on the reflective surface. Also divided into chemical etching (Etching) precision mechanical engraving method (V-cut) light micro-shadowing (Stamper), and internal diffusion.
According to the way of light entry: Edge-lit (lamp and LED) and Direct type
Edge-lit type: the light source (lamp or LED) will be placed on the side of the light guide plate.
Direct type: place the light emitting device (lamp or LED) at the bottom of the light guide plate.
According to the forming production method: injection molding and cutting molding injection
Molding: the application of the injection molding machine will be optical grade PMMA particles using high temperature, high-pressure injection into the mold, Cooling, and forming.
Cutting and forming: The optical grade PMMA sheet is cut through the cutting process to complete the finished product.
The role of the LGP
The light guide plate is the use of optical grade acrylic / PC sheet, and then with very high reflectivity and non-absorbing high-tech materials, the bottom of the optical grade acrylic plate with UV screen printing technology is printed on the light guide dots.
The use of an optical grade acrylic sheet to absorb the light from the lamp to stay on the surface of the optical grade acrylic sheet, when the light is shot to each guide point, the reflected light will spread to all angles, and then destroy the reflection conditions by the front of the light guide plate. And through a variety of sparse, different sizes of light guide points, can make the light guide plate uniform light.
The advantages of LGP
1. Adopt a flexible process, which can be cut at will
The light guide plate can be made in full version, cut and spliced at will, with simple technology and convenient production, or special plate making with individual specifications. The advantages are more and more obvious for products with large production volumes but many specifications. Customers can customize the shape and size according to their products.
2. High-cost performance ratio
Light guide plate light conversion rate is very high, that is to say, in the same area luminous brightness of high luminous efficiency at the same time low power consumption, and in the same brightness can use a thinner product, saving costs. The praiseworthy advantage of the light guide plate is energy saving, and because of the use of advanced light guide plate luminous technology light uniformity, environmental protection, and durable and reliable indoor and outdoor can be applied, the overall performance ratio is very considerable.
Why LED Light Panel need LGP？
The backlight panel is the light source device that is used to ensure that light is emitted from behind the LCD. The principle of LCD backlight is the reflective sheet, light guide, upper and lower BEF, LED strip and adhesive frame iron frame assembled together, LED strip is charged to make the component emit side view light, which becomes plane light after passing through the light guide to provide backlight for the LCD display.
Because the LCD itself is transparent and does not emit light, it requires a backlight panel to assist. The brightness, uniformity, and some other indicators of the backlight panel have a direct impact on the performance of the LCD. Backlight board is actually in the manufacturing process of LCD LCD, in its back plus LED lights and reflectors combination of high brightness luminous body, because the LCD LCD panel does not emit light, can only transmit light, so to add a high brightness luminous body in the back. And the light guide is an essential part of the backlight panel, so in terms of LGP is very important for the LED panel, and can not be missing.
