Electronic device
View Patent ↗An electronic device 100 includes a display unit 165 including a display part 160 having a display region 160 a on which to display an image, a panel member 130 to be touched by a user, and a first adhesive part 150 which is provided so as to cover the display region 160 a and which bonds the panel member 130 and the display part 160 together; a vibration part 140 which causes flexural vibration of the display unit 165 ; and a second adhesive part 155 which bonds the vibration part to the display unit. The rigidity of the first adhesive part 150 is lower than the rigidity of the second adhesive part 155.
1. An electronic device comprising:
a display unit including a display part having a display region on which to display an image, a panel member to be touched by a user, and a first adhesive part provided so as to cover the display region and bonding the panel member and the display part together;
a vibration part configured to cause flexural vibration of the display unit; and
a second adhesive part bonding the vibration part to the display unit, wherein rigidity of the first adhesive part is lower than rigidity of the second adhesive part and is set to suppress an occurrence of uneven luminance and uneven color of the display part caused by the display part receiving a stress caused by a stress occurring in the first adhesive part.
2. The electronic device according to claim 1 , wherein
the first adhesive part bonds the panel member and the display part together, for substantially an entirety of a region where the panel member and the display part face each other.
3. The electronic device according to claim 1 , wherein
the rigidity of the first adhesive part is lower than rigidity of the panel member.
4. The electronic device according to claim 1 , wherein
the vibration part is bonded to the display part, on an opposite side to the panel member.
5. The electronic device according to claim 1 , wherein
the vibration part is arranged nearer to a position that becomes an anti-node of vibration than a position that becomes a node of vibration in the display unit.
6. The electronic device according to claim 1 , wherein
a plurality of the vibration parts are bonded to the display unit,
the electronic device further includes:
a vibration controller configured to control drive of the plurality of the vibration parts, by selecting a drive condition from among a plurality of drive conditions including a first drive condition for causing vibration of a first vibration mode in the panel member and a second drive condition for causing vibration of a second vibration mode in the panel member, and
the number of nodes of the vibration generated in the panel member in the first vibration mode and the number of nodes of the vibration generated in the panel member in the second vibration mode are different from each other.
7. The electronic device according to claim 6 , wherein
when the number of the nodes in the first vibration mode is defined as N (N is a positive integer), the number of the nodes in the second vibration mode is N+1.
8. The electronic device according to claim 6 , further including:
a panel controller configured to detect a touch position of the user, wherein
the vibration controller performs switching between the first vibration mode and the second vibration mode in accordance with a detection result of the touch position obtained by the panel controller.
9. The electronic device according to claim 1 , wherein
the first adhesive part is formed from a material that allows light emitted from the display part to pass therethrough.
10. The electronic device according to claim 1 , wherein
the second adhesive part is provided between the vibration part and the display unit.