Hi,
Here’s a link to the [http://h10032.www1.hp.com/ctg/Manual/c04686890|service manual] for a HP Envy m6.
Scroll to p.57 to view the necessary pre-requisite steps and then the procedure to remove the display assembly and its’ sub-components i.e. touchscreen.
On p.18 you’ll find a diagram showing the sub-components of the display assembly and also the part number for the touchscreen etc.
If you search online using the part number ''only'', you should get results for suppliers of the part.
Hopefully this is of some help.