Patent ID: 9733507
Date: 2017-08-15
CPC Classifications: G02F,H01L

Claim:
1. A display device comprising: a first substrate; a second substrate bonded to the first substrate to be opposed to the first substrate; a display functional layer disposed between the first substrate and the second substrate; and a bond fixing part disposed around the display functional layer and bonding the first substrate and the second substrate, wherein a linear expansion coefficient of the first substrate is larger than a linear expansion coefficient of the second substrate, a thickness of the first substrate is larger than a thickness of the second substrate, an area of the first substrate is larger than an area of the second substrate, the first substrate is a glass substrate including an alkali component at a first concentration, the second substrate is a glass substrate including an alkali component at a second concentration lower than the first concentration or a glass substrate including no alkali component, a barrier film which covers an entire surface of a display functional layer side of the first substrate is disposed on the first substrate, the second substrate has a thin film transistor, a display part, and a terminal part to which a signal for driving the thin film transistor is input, the first substrate has a first side extending along a first direction, a second side opposed to the first side, a third side intersecting with the first and second sides, and a fourth side opposed to the third side when seen in a plan view, the first side, the second side, and the third side are disposed at positions not overlapped with the second substrate when seen in a plan view, the first substrate has a first surface opposed to the display functional layer and a second surface positioned on an opposite side of the first surface, the second substrate has a third surface opposed to the display functional layer and a fourth surface positioned on an opposite side of the third surface, a first polarization plate is bonded to the second surface of the first substrate via a first bonding layer, a second polarization plate is bonded to the fourth surface of the second substrate via a second bonding layer, and an elastic modulus of the first bonding layer is larger than that of the second bonding layer.