A glass substrate for a front filter of a display device having considerable strength and excellent display quality, and being lightweight is provided. A display device employing this display filter substrate is provided. The glass substrate has one or more of electromagnetic-wave shielding function, near infrared ray blocking function, and anti-reflection function. The glass substrate has a thickness of 1.8-3.2 mm, an average surface compressive stress of 20-70 MPa, and a warp ratio of the glass substrate of 1.0% or less. The surface compressive stress is applied by an air blast cooling process or a chemical reinforcing process. The filter substrate is disposed over a front surface of the display device.

 
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~ 00049