Phototherapy patch

Abstract

A phototherapy patch is disclosed, which includes: an adhesive layer, having a first surface and an opposite second surface; a pharmaceutical drug layer, disposed on the first surface of the adhesive layer; and a spontaneous emission layer, disposed over the pharmaceutical drug layer and capable of emitting therapeutic light by light illumination or a chemical reaction. Accordingly, the phototherapy patch according to the present invention has no power supply disposed therein, and thereby is suitable to be manufactured as a particularly thin and thus inconspicuous device.

1 . A phototherapy patch, comprising:
 an adhesive layer, having a first surface and an opposite second surface;   a pharmaceutical drug layer, disposed on the first surface of the adhesive layer; and   a spontaneous emission layer, disposed over the pharmaceutical drug layer and capable of emitting therapeutic light via light illumination or a chemical reaction.   
     
     
         2 . The phototherapy patch as claimed in  claim 1 , further comprising:
 an isolating layer, disposed between the pharmaceutical drug layer and the spontaneous emission layer.   
     
     
         3 . The phototherapy patch as claimed in  claim 2 , further comprising:
 a passivation layer, covering the pharmaceutical drug layer, the spontaneous emission layer and the isolating layer.   
     
     
         4 . The phototherapy patch as claimed in  claim 1 , further comprising:
 a release film, disposed on the second surface of the adhesive layer.   
     
     
         5 . The phototherapy patch as claimed in  claim 1 , wherein the spontaneous emission layer comprises a solar absorption layer and an organic emission layer, the solar absorption layer is capable of converting incident light into electrical energy to drive the organic emission layer, and the organic emission layer is disposed between the solar absorption layer and the pharmaceutical drug layer. 
     
     
         6 . The phototherapy patch as claimed in  claim 1 , wherein the spontaneous emission layer is a fluorescent layer. 
     
     
         7 . The phototherapy patch as claimed in  claim 5 , wherein the organic emission layer comprises; a first electrode layer disposed over the pharmaceutical drug layer; an organic material layer disposed on the first electrode layer; and a second electrode layer disposed on the organic material layer. 
     
     
         8 . The phototherapy patch as claimed in  claim 7 , wherein the solar absorption layer comprises: a photoelectric conversion layer disposed on the second electrode layer; and a third electrode layer disposed on the photoelectric conversion layer and electrically connected to the first electrode layer. 
     
     
         9 . The phototherapy patch as claimed in  claim 8 , wherein the third electrode is electrically connected to the first electrode layer via a circuit. 
     
     
         10 . The phototherapy patch as claimed in  claim 6 , wherein the fluorescent layer comprises an oxidant, a fluorescent dye and an ester compound. 
     
     
         11 . The phototherapy patch as claimed in  claim 10 , wherein the fluorescent layer has an insulating element disposed therein, the fluorescent dye and the ester compound are disposed inside the insulating element, and the oxidant is disposed outside the insulating element. 
     
     
         12 . The phototherapy patch as claimed in  claim 10 , wherein the fluorescent layer has an insulating element disposed therein, the oxidant is disposed inside the insulating element, and the fluorescent dye and the ester compound are disposed outside the insulating element. 
     
     
         13 . The phototherapy patch as claimed in  claim 10 , wherein the ester compound is an oxalate ester compound. 
     
     
         14 . The phototherapy patch as claimed in  claim 10 , wherein the oxidant is hydrogen peroxide. 
     
     
         15 . The phototherapy patch as claimed in  claim 7 , wherein the first electrode layer is a light-transmissive conductive layer. 
     
     
         16 . The phototherapy patch as claimed in  claim 7 , wherein the second electrode layer is a lightproof conductive layer. 
     
     
         17 . The phototherapy patch as claimed in  claim 8 , wherein the third electrode layer is a light-transmissive conductive layer. 
     
     
         18 . The phototherapy patch as claimed in  claim 1 , wherein the spontaneous emission layer is capable of emitting therapeutic light within the wavelength range of 400-470 nm, 500-550 nm, 550-600 nm, 600-700 nm or 700-1000 nm.