Abstract: A package comprises a substrate including a first surface, and an upper conductive layer arranged on the first surface, a first light-emitting unit arranged on the upper conductive layer, and comprises a first semiconductor layer, a first substrate, a first light-emitting surface and a first side wall, a second light-emitting unit, which is arranged on the upper conductive layer, and comprises a second light-emitting surface and a second side wall, a light-transmitting layer arranged on the first surface and covers the upper conductive layer, the first light-emitting unit, and the second light-emitting unit, a light-absorbing layer, which is arranged between the substrate and the light-transmitting layer in a continuous configuration of separating the first light-emitting unit and the second light-emitting unit from each other, and a reflective wall arranged on the first side wall, wherein a height of the reflective wall is lower than that of the light-absorbing layer.

Abstract: The present invention is related to a method of presenting adjustable multi-channel sound field over a display device when a multimedia software is playing an audio data through a speaker system. The present invention is provided to a user to adjust sound field and obtain a real time sound field after being adjusted with limited facilities. The present invention generates a virtual sound field interface on a display device, the virtual sound field interface including a user position and at least a movable virtual sound source. Each virtual sound source is at a corresponding position. Then, the present invention adjusts a position of the movable virtual sound source to obtain a corresponding real time sound field.