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TV backlight diffusers type: PS diffuser, PC diffuser and acrylic PMMA diffuser

2021-05-07

TV backlight diffusers are divided into: PS diffuser, PC diffuser and acrylic PMMA diffuser.


Principle of diffuser:

By chemical or physical means, use the physical imagination of refraction, reflection and scattering when light encounters two media with different refractive indexes during its course, by adding inorganic or organic light diffusing agents to the raw materials, or passing through the substrate The array of micro-feature structures on the surface adjusts the light artificially, so that the light is refracted, reflected, and scattered in different directions, thereby changing the path of the light, and realizing the full dispersion of the incident light to produce the effect of optical diffusion


PS diffuser

PS diffuser is a kind of material with light diffusing properties in the PS (polystyrene) sheet type. It is one of the diffuser types of acrylic (PMMA), PC, PP, PS and other materials. It has a certain haze, The optical characteristics of the plastic sheet such as light transmittance and refractive index can effectively transform a point or line light source into a soft and uniform surface light source. Under the premise of achieving a good light transmittance, it also has a good light source lattice shielding property .


In addition, the price is relatively affordable, so it is widely used in the booming LCD-TV and LED lighting products, adding a choice of optical diffusion materials for the secondary light distribution of LED lighting products.


PS diffuser application

The PS diffuser is widely used in liquid crystal display, LED lighting and imaging display systems. Its main function is to fully diffuse the incident light to achieve a softer and uniform illumination effect. 1. Applied to the direct-lit backlight system used in LCD TVs, the PS diffuser is required to have good performances such as heat resistance, dimensional stability, mechanical strength, flame resistance, etc., as well as high light transmittance, excellent shielding and Durability, make the light diffusion effect reach the best condition, most suitable for direct type backlight unit.

2. The diffuser is used in lighting, mainly in LED flat light panels, LED downlights, grille lights, ceiling light masks, advertising light boxes, sightseeing films and other products.


PC diffuser

PC diffuser plate, also known as diffuse polycarbonate plate, also known as PC light diffuser plate, PC uniform light plate, PC diffuse reflector, etc. PC diffuser is a product processed by a special process on the basis of ordinary PC single-layer board. It is a new optical material that realizes uniform surface lighting. The effect of PC diffuser is closely related to the content and composition of the diffuser particles. The less the content of diffusion particles, the higher the light transmittance and the lower the haze. The diffusion plate is generally light white and translucent. The more the content of diffusion particles, the lower the light transmittance and the higher the haze. , The diffuser is generally milky white and opaque, so it can be seen that the light transmittance and haze of the diffuser are inversely proportional, that is, the two cannot have both.


Product Features

Appearance: The milky whiteboard is translucent, with few crystal points, high light transmission, high smoothness, and good flatness. Super impact resistance: 250 times the strength of ordinary glass, 150 times more than tempered glass, and 30 times higher than that of tempered glass. Therefore, it does not break when various accidents occur. Better protect your property and life safety. Construction performance: The density of PC is 1.2, and the weight is only 1/2 of glass, so the weight is lighter, which is convenient for construction and reduces costs.

Scope of use

Uses: LED and fluorescent lamps, panel lights, advertising light boxes as light sources, billboards, outdoor billboards, stage special effects, LED electronic displays, natural daylight ceiling lights.


Acrylic diffuser

Acrylic diffuser has the optical characteristics of plastic sheets such as high haze, high light transmittance and high diffusivity, which can effectively convert point or line light sources into soft and uniform surface light sources, under the premise of achieving good light transmittance , At the same time, it has a good light source lattice shielding property. It is an ideal optical material to solve the secondary light distribution of LED lighting products, and it is the best light diffusion material for LED lighting products.

Acrylic diffuser features

High brightness: Under the same transmittance, the brightness can be improved compared with traditional diffuser. Excellent shielding effect: good light source diffusion and homogenization ability, excellent shielding lamp tube effect.

High dimensional stability: small water-absorbing warpage and excellent dimensional stability.


Excellent durability: in the accelerated ultraviolet aging test, it is not prone to yellowing.


Excellent quality assurance: all series of products have passed UL-94 and RoHS banned poison test


Diffuser films are very important parts in TV backlight solutions. Please contact us for more details and solutions.

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