Patent ID: 9189726
Filing Date: 2015-11-17
Classification: G06K

Abstract:
1. A radio frequency identification (RFID) tag comprising: a pattern layer which comprises a first conductor, having a pattern, and an RFID chip electrically connected to the first conductor, an insulating layer which insulates the pattern layer from a radiation layer; the radiation layer which is attached to the insulating layer, and comprises a second conductor having a radiation pattern inductively coupled to the first conductor of which impedance is configured to match with impedance of the second conductor; a lower protection layer which is disposed below and attached to a combination of the pattern layer, the insulating layer and the radiation layer, and comprises at least one first polyimide layer comprising polyimide and directly attached to a first silicon layer comprising silicon and attached to the combination of the pattern layer, the insulating layer and the radiation layer; an upper protection layer which is disposed above the combination of the pattern layer, the insulating layer and the radiation layer, and comprises at least one second polyimide layer comprising polyimide and a second silicon layer comprising silicon; a third silicon layer with water resistant property, which is attached to a lower surface of the first polyimide layer; and a fourth silicon layer with water resistant property, which is attached to an upper surface of the second polyimide layer, wherein the radio frequency identification (RFID) tag is attached to a member to be washed.