Electronic device
View Patent ↗An electronic device, in which accommodation space for a display can be extended over the space where a speaker might be provided. A portable terminal, as an example of an electronic device, is provided with a display/speaker section, an operating section, and a microphone on the front surface of its main body. The portable terminal does not have an independent speaker. A display cover located in front of the display/speaker section for protecting the display surface vibrates in response to an audio signal by a drive to output sound. Consequently, the display can be situated even over the space where a speaker might be provided.
1. An electronic device comprising:
a main body;
a display disposed on the main body for displaying information;
a plate member having a transparent central section overlying the display and a colored section adjacent the transparent central section and positioned other than overlying the display; and
a driving unit connected to the colored section of the plate member for vibrating the plate member to cause the plate member to create a sound in response to an audio signal, the driving unit comprising:
a planar voice coil;
a resilient member;
a support section moveably attached to the colored section of the plate member by said resilient member; and
a first magnet disposed inside the planar voice coil and a second magnet disposed outside the planar voice coil, wherein the first and second magnets are fixedly attached to the support section.
2. The electronic device as claimed in claim 1 , wherein the first and second magnets are installed on the colored, section of the plate member.
3. The electronic device as claimed in claim 2 , wherein the planar voice coil comprises a shape of a quadrilateral frame and the first and second magnets are quadrilateral shaped complementary to the shape of the planar voice coil.
4. The electronic device as claimed in claim 2 , further comprising a second planar voice coil adjacent the first voice coil in a direction orthogonal to a surface on which the first voice coil is installed.
5. The electronic device as claimed in claim 1 , wherein the planar voice coil is installed on the colored section of the plate member.
6. The electronic device as claimed in claim 5 , wherein the planar voice coil comprises a shape of a quadrilateral frame and the first and second magnets are quadrilateral shaped complementary to the shape of the planar voice coil.
7. The electronic device as claimed in claim 5 , further comprising a second planar voice coil adjacent the first voice coil in the direction orthogonal to a surface of the colored section on which the first voice coil is installed.
8. The electronic device as claimed in claim 1 , further comprising a plurality of driving units installed at plural places on the colored section of the plate member.
9. The electronic device as claimed in claim 1 , wherein the colored section comprises an edge section circumscribing the transparent central section.
10. The electronic device as claimed in claim 1 , wherein the planar voice coil is fixedly attached to the colored section of the plate member.