The tag '' doesn't work in IE11

Our website has some controls can't work well with IE11,so we want that IE11 can trun on compatibility view mode or change to other old version mode when clients use IE11 to access our website.

I added this tag '<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7"/>'

or

'<meta http-equiv="X-UA-Compatible" Content="IE=8,IE=9">'

to page.But it doesn't work. Those issue controls still don't work.

so why this tag can't work in IE11?

Thanks

Taylor