Electronic device

• US 8,213,166 B2
• Filed: 02/25/2009
• Issued: 07/03/2012
• Est. Priority Date: 06/10/2008
• Status: Expired due to Fees

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Mihara, Daisuke, Tatsukami, Ikki
• Primary Examiner(s): Edwards, Anthony Q
• Application Number:
  US12/379,601
• Publication Number:
  US 20090303680A1
• Time in Patent Office: 1,224 Days
• Field of Search: 361/679.31, 361/679.55
• US Class Current: 361/679.1
• CPC Class Codes: G06F 1/1616 with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
• CPC Class Codes: G06F 1/1656 Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203
• CPC Class Codes: G06F 1/1671 Special purpose buttons or auxiliary keyboards, e.g. retractable mini keypads, keypads or buttons that remain accessible at closed laptop G06F1/1666 takes precedence
• CPC Class Codes: G06F 1/169 the I/O peripheral being an integrated pointing device, e.g. trackball in the palm rest area, mini-joystick integrated between keyboard keys, touch pads or touch stripes G06F1/1643 takes precedence; constructional details of pointing devices G06F3/033
• CPC Class Codes: G06F 1/20 Cooling means

Abstract

An electronic device includes: a casing; a detachable cover having a plate shape forming a part of a top surface of the casing; and an electrostatic touch sensor disposed on an inner surface of the cover to detect a touch location of a finger on an outer surface of the cover.

Claims

1. An electronic device comprising:

a casing that has an opening in a top surface and a surrounding section around the opening and lower than the top surface;

an electrostatic touch sensor that is arranged on the surrounding section of the casing and covers over the opening; and

a cover that is detachable, has a plate shape to serve as a part of the top surface of the casing and covers over the electrostatic touch sensor when the cover is attached to the top surface of the casing, wherein

the electrostatic touch sensor includes a sensor board that has a front face and a backside, and a sensor circuit mounted on the backside of the sensor board,

the sensor circuit is disposed inside the opening when the electrostatic touch sensor is arranged on the surrounding section, and

the electronic device further comprises a double-coated fixing tape that adheres edges of the sensor board around the sensor circuit to the surrounding section around the opening when the electrostatic touch sensor is arranged inside the recess.

2. The electronic device according to claim 1, further comprising a display unit which has a display screen and is supported by a main unit to be freely opened and closed relative to the main unit,

wherein the casing is a casing of a main unit having a keyboard disposed on a top surface of the main unit and an operational circuit, and the electrostatic touch sensor is a pointing device which controls movement of a cursor on the display screen depending on movement of a user'"'"'s finger touching the outer surface of the cover.

3. The electronic device according to claim 1, wherein

the cover includes an engagement claw at an edge, and

the casing has an engagement hole into which the engagement claw is engaged by receiving insertion of the engagement claw.