Patent ID: 11905204
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  G | IPC C  G

Claim 9:
10. An electronic device, comprising:
a housing including a front cover facing in a first direction and a rear cover facing in a second direction which is opposite to the first direction, the housing having a transparent area forming at least part of the front cover;
a battery disposed within the housing; and
a display device disposed within the housing and including a screen area exposed through the front cover, wherein the rear cover includes:
a glass plate,
a first coat layer disposed on a surface of the glass plate, the first coat layer at least partially including a network structure with multiple protrusion-and-depression shapes formed by inorganic polysilazane coated on the surface of the glass plate, wherein the first coat layer has a hazing exceeding 5% and a transmittance of less than 91%, the first coat layer being steam hardening-processed in a temperature range of 100° C. to below 200° C. for a time range of 30 minutes to 120 minutes during a first hardening step, and processed with peroxide in a temperature range at 30° C. to 200° C. for three hours during a second hardening step after the first hardening step,

a second coat layer disposed on a surface of the first coat layer and including a shape corresponding to the network structure of the first coat layer,
wherein the hazing denotes a state in a middle of changing from transparent to opaque depending on a percent of the hazing,
wherein the multiple protrusion-and-depression shapes includes a plurality of valley portions and peak portions,
wherein the plurality of valley portions have a thickness ranging from 300 nm to 600 nm, and the peak portions have a thickness ranging from 0.6 μm to 2 μm, and
wherein a thickness of the first coat layer is implemented in a range of a thickness of the plurality of valley portions and a thickness of the peak portions so that a degree of the hazing is not lowered.