Glass composite, casing, display device and terminal device

A method for forming a glass composite, comprising:

• providing a first glass member and a second glass member;
• activating at least a part of a surface of the first glass member to form a first activated surface, with unsaturated chemical bonds formed on the first activated surface of the first glass member;
• activating at least a part of a surface of the second glass member to form a second activated surface, with unsaturated chemical bonds on the second activated surface of the second glass member;
• and
• connecting at least partially the first glass member and the second glass member with each other on a contact interface at a contacting position of the first glass member and the second glass member to form the glass composite,
• wherein:
• the contact interface is formed by the first activated surface and the second activated surface at the contacting position, and
• the first activated surface of the first glass member and the second activated surface of the second glass member are directly bonded with each other by saturated chemical bonds formed by the unsaturated chemical bonds on the first activated surface of the first glass member and the unsaturated chemical bonds on the second activated surface of the second glass member.