Display device including reinforcement and barrier layers
A display device includes: a substrate; a reinforcement layer on the substrate; and a display layer including a barrier layer on the reinforcement layer, wherein a number of hydrogen atoms of the reinforcement layer per unit volume is less than a number of hydrogen atoms of the barrier layer per unit volume.
1 . A display device comprising:
a substrate having a tensile force;
a reinforcement layer on the substrate; and
a display layer comprising a barrier layer on the reinforcement layer,
wherein a number of hydrogen atoms of the reinforcement layer per unit volume is less than a number of hydrogen atoms of the barrier layer per unit volume such that the reinforcement layer has a compressive force offsetting the tensile force of the substrate.
2 . The display device of claim 1 , wherein the reinforcement layer has a stress resistance of 650 MPa or less.
3 . The display device of claim 1 , wherein a number of hydrogen atoms contained in the reinforcement layer per unit volume is 6.42×10 20 or less.
4 . The display device of claim 1 , wherein the reinforcement layer comprises a silicon oxide.
5 . A display device comprising:
a substrate having a tensile force;
a reinforcement layer on the substrate; and
a display layer comprising a barrier layer on the reinforcement layer,
wherein the reinforcement layer comprises a silicon nitride, and
a ratio of a bond between nitrogen and hydrogen of the silicon nitride to a bond between silicon and hydrogen per unit volume is 22 or less such that the reinforcement layer has a compressive force offsetting the tensile force of the substrate.
6 . The display device of claim 5 , wherein a ratio of the nitrogen to the silicon per unit volume is 1.1 or less.
7 . The display device of claim 1 or 5 , wherein the reinforcement layer comprises:
a first reinforcement layer on the substrate; and
a second reinforcement layer between the first reinforcement layer and the barrier layer.
8 . The display device of claim 1 or 5 , wherein a thickness of the reinforcement layer is 5,000 Å or less.
9 . The display device of claim 1 or 5 , wherein a thickness of the reinforcement layer is less than a thickness of the barrier layer.