Display device and method for manufacturing the same

Abstract

To provide a thinned display device with a touch sensor and to provide a highly reliable display device. A sensor layer including an electrode of a touch sensor is formed in advance over a support substrate which is different from a substrate which forms a display device so that the sensor layer can be separated, the sensor layer is separated from the support substrate, and the separated sensor layer is attached to one surface of a substrate the other surface of which is provided with a component such as a color filter, with a bonding layer interposed therebetween.

What is claimed is: 
     
         1 . A display device comprising:
 a first substrate and a second substrate which face each other,   wherein a first surface of the first substrate which faces the second substrate is provided with a component;   wherein a first bonding layer, and a sensor layer and a wire electrically connected to an FPC over the first bonding layer are provided over a second surface of the first substrate which is opposite to the first surface; and   wherein a surface of the second substrate which faces the first substrate is provided with a display element.   
     
     
         2 . The display device according to  claim 1 , wherein a polarizing plate is provided over the sensor layer with a second bonding layer interposed therebetween. 
     
     
         3 . The display device according to  claim 1 , wherein the display element comprises a pair of electrodes and a liquid crystal in an electric field formed by the pair of electrodes. 
     
     
         4 . The display device according to  claim 1 , wherein the display element comprises a pair of electrodes and a layer containing a light-emitting organic compound which is interposed between the pair of electrodes. 
     
     
         5 . The display device according to  claim 1 , wherein the display device further comprises an oxide layer between the first bonding layer and the sensor layer and between the first bonding layer and the wire electrically connected to the FPC. 
     
     
         6 . The display device according to  claim 1 ,
 wherein the component is one of a color filter, a black matrix, a spacer, an electrode of a liquid crystal element, an overcoat of a liquid crystal element, an alignment film of a liquid crystal element, and an auxiliary wiring to which one electrode of an organic EL element is electrically connected.   
     
     
         7 . A display device comprising:
 a first substrate and a second substrate which face each other,   wherein a first surface of the first substrate which faces the second substrate is provided with a component;   wherein a first bonding layer, and a sensor layer and a wire electrically connected to an FPC over the first bonding layer are provided over a second surface of the first substrate which is opposite to the first surface;   wherein a surface of the second substrate which faces the first substrate is provided with a display element:   wherein a first electrode of the sensor layer extends beyond the first substrate, and   wherein an electrode of a first transistor extends beyond an end portion of the first substrate.   
     
     
         8 . The display device according to  claim 7 , wherein a polarizing plate is provided over the sensor layer with a second bonding layer interposed therebetween. 
     
     
         9 . The display device according to  claim 7 , wherein the display element comprises a pair of electrodes and a liquid crystal in an electric field formed by the pair of electrodes. 
     
     
         10 . The display device according to  claim 7 , wherein the display element comprises a pair of electrodes and a layer containing a light-emitting organic compound which is interposed between the pair of electrodes. 
     
     
         11 . The display device according to  claim 7 , wherein the display device further comprises an oxide layer between the first bonding layer and the sensor layer and between the first bonding layer and the wire electrically connected to the FPC. 
     
     
         12 . The display device according to  claim 7 ,
 wherein the component is one of a color filter, a black matrix, a spacer, an electrode of a liquid crystal element, an overcoat of a liquid crystal element, an alignment film of a liquid crystal element, and an auxiliary wiring to which one electrode of an organic EL element is electrically connected.