An electronic device comprising: a housing including a first glass plate, a second glass plate opposite to the first glass plate, and a side member to surround a space between the first glass plate and the second glass plate; and a touch screen display disposed in the space and viewed through at least a portion of the first glass plate, wherein the first glass plate includes: a rectangular planar part which faces outward in a first direction, the rectangular planar part including a first edge, which has a first length, and a second edge which extends perpendicularly to the first edge and has a second length longer than the first length, a first curved part including a first surface which extends from the first edge to a first part of the side member and faces the first part of the side member, and a second curved part including a second surface which extends from the second edge to a second part of the side member and faces the second part of the side member, and wherein each of the first part and the second part of the side member includes: a metal part that forms an outer surface (211;231) of the housing, and has a first inner surface (2221;2421) facing the space in a second direction perpendicular to the first direction, and a polymer part that makes contact with the first inner surface (2221;2421) and defines a first recess (213;233) together with the metal part to receive the first glass plate; wherein the polymer part formed inside the first recess (213;233) is arranged such that it is not exposed to the outside of the electronic device. a housing including a first glass plate, a second glass plate opposite to the first glass plate, and a side member to surround a space between the first glass plate and the second glass plate; and a touch screen display disposed in the space and viewed through at least a portion of the first glass plate, wherein the first glass plate includes: a rectangular planar part which faces outward in a first direction, the rectangular planar part including a first edge, which has a first length, and a second edge which extends perpendicularly to the first edge and has a second length longer than the first length, a first curved part including a first surface which extends from the first edge to a first part of the side member and faces the first part of the side member, and a second curved part including a second surface which extends from the second edge to a second part of the side member and faces the second part of the side member, and a rectangular planar part which faces outward in a first direction, the rectangular planar part including a first edge, which has a first length, and a second edge which extends perpendicularly to the first edge and has a second length longer than the first length, a first curved part including a first surface which extends from the first edge to a first part of the side member and faces the first part of the side member, and a second curved part including a second surface which extends from the second edge to a second part of the side member and faces the second part of the side member, and wherein each of the first part and the second part of the side member includes: a metal part that forms an outer surface (211;231) of the housing, and has a first inner surface (2221;2421) facing the space in a second direction perpendicular to the first direction, and a polymer part that makes contact with the first inner surface (2221;2421) and defines a first recess (213;233) together with the metal part to receive the first glass plate; wherein the polymer part formed inside the first recess (213;233) is arranged such that it is not exposed to the outside of the electronic device. a metal part that forms an outer surface (211;231) of the housing, and has a first inner surface (2221;2421) facing the space in a second direction perpendicular to the first direction, and a polymer part that makes contact with the first inner surface (2221;2421) and defines a first recess (213;233) together with the metal part to receive the first glass plate; wherein the polymer part formed inside the first recess (213;233) is arranged such that it is not exposed to the outside of the electronic device.