Thermoplastic resin composition for LED reflector plates

Abstract

The present invention provides a thermoplastic resin composition for LED reflector plates, which contains 3-100 parts by mass of (B) a white pigment and 5-100 parts by mass of (C) a needle-like or fibrous reinforcing material per 100 parts by mass of (A) a thermoplastic resin, and which satisfies [{the refractive index of the thermoplastic resin (A)} - {the refractive index of the reinforcing material (C)} >= 0.02]. This thermoplastic resin composition for LED reflector plates has excellent reinforcing effect of the reinforcing material and scarcely inhibits light reflection / scattering effect of the white pigment such as titanium oxide. Consequently, the thermoplastic resin composition for LED reflector plates is effective for luminance enhancement and durability improvement of an LED.

Description

technical field [0001] The present invention relates to a thermoplastic resin composition for LED reflectors that is excellent in surface reflectance, heat discoloration resistance, etc., and is relatively effective in increasing the brightness of LEDs. Background technique [0002] In recent years, LEDs (Light Emitting Diodes) have been used in lighting fixtures, optical components, mobile phones, backlights for liquid crystal displays, car console panels, and traffic lights, taking advantage of the characteristics of low power consumption, long life, high brightness, and miniaturization. , display panels, etc., but further high brightness and durability are required. [0003] As one of the methods of increasing the luminance of LEDs, there is a method of improving the light reflection characteristics of LED reflectors. In order to improve the light reflection characteristics of LED reflectors and improve dimensional stability and mechanical strength, it has been proposed ...

AI Technical Summary

Problems solved by technology

[0005] However, it has recently been found that in these resin compositions, the reinforcing material mixed for the purpose of improving dimensional stability or mechanical strength absorbs part of the light from LED light-emitting elements or the reflected light from white pigments such as titanium oxide, hindering The effect of improving whiteness and light reflectance has become an obstacle in the manufacture of LEDs with higher brightness

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