the high intensity light output of edge lighting point light sources such as leds may generate undesired leakage light that is optically conducted by way of a continuum of the material of a components affixing adhesive member . in accordance with present disclosure , air filled grooves or other such discontinuities are formed in the adhesive member along respective light output pathways of the respective point light sources . one corresponding embodiment comprises spaced apart leds mounted on an fpcb ; a light guide plate disposed adjacent to the leds ; a main support accommodating the leds and the lgp ; and an adhesive member formed to affix together the fpcb , the main support , and the light guide , wherein the adhesive member is patterned to define air filled grooves along respective light output pathways of the leds .