Thin plate glass laminate, process for producing display device using thin plate glass laminate, and support glass substrate
View Patent ↗To provide a thin plate glass laminate of a thin plate glass substrate and a support glass substrate, which suppresses inclusion of bubbles and occurrence of convex defects due to foreign matters, from which the thin plate glass substrate and the support glass substrate are easily separated, and which is excellent in heat resistance, a process for producing a display device using such a thin plate glass laminate, and a support glass substrate for such a thin plate glass laminate. A thin plate glass laminate formed by laminating a thin plate glass substrate and a support glass substrate, wherein the thin plate glass substrate and the support glass substrate are laminated by means of a silicone resin layer having releasability and non-adhesive properties, and the silicone resin layer and the support glass substrate each has at least one hole that communicate with each other.
1. A process for producing a display device employing a thin plate glass substrate, the process comprising:
(a) forming, on a support glass substrate having at least one hole, a silicone resin layer with a silicone resin which is releasable and non-adhesive and having at least one hole that communicates with the hole of the support glass substrate;
(b) laminating the thin plate glass substrate on a surface of the releasable and non-adhesive silicone resin layer formed on the support glass substrate by a force resulting only from Van der Waals force;
(c) carrying out a treatment for producing a display device on the thin plate glass substrate; and
(d) injecting a compressed gas into an interface between the silicone resin layer and the thin plate glass substrate through the hole of the support glass substrate to separate the thin plate glass substrate and the support glass substrate.
2. The process of claim 1 , wherein the silicone resin layer is a layer comprising a cured product of a release paper silicone.
3. The process of claim 2 , wherein the cured product is a crosslinked product of a linear polyorganosiloxane comprising vinyl groups at both ends or at both ends and in its side chains, and a methyl hydrogen polysiloxane.
4. The process of claim 1 , wherein the forming (a) is carried out by applying a release paper silicone on the support glass substrate and curing the release paper silicone.
5. The process of claim 4 , wherein the release paper silicone comprises a linear polyorganosiloxane comprising vinyl groups at both ends or at both ends and in its side chains, a methyl hydrogen polysiloxane, and a platinum catalyst.
6. The process of claim 4 , wherein the release paper silicone comprises no non-reactive silicone.
7. The process of claim 4 , wherein an application of the release paper silicone is carried out by a method comprising screen printing.
8. The process of claim 4 , wherein a heat-curing of the release paper silicone is carried out at a temperature of from 50 to 250° C. after the silicone is applied.
9. The process of claim 4 , wherein laminating (b) is carried out by vacuum pressing or vacuum lamination.
10. The method of claim 1 , wherein the thin plate glass substrate has a thickness less than 0.3 mm.
11. The method of claim 10 , wherein the thin plate glass substrate has a thickness of at least 0.1 mm.
12. The method of claim 1 , wherein the thin plate glass substrate has a thickness of at most 0.2 mm.