DISPLAY DEVICE EXHIBITING EXCELLENT MAINTAINABILITY

• US 20140267957A1
• Filed: 10/04/2012
• Published: 09/18/2014
• Est. Priority Date: 10/28/2011
• Status: Active Grant

• Current Assignee: NEC Platforms, Ltd. (NEC Corporation)
• Original Assignee: NEC Infrontia Corporation (NEC Corporation)
• Inventors: Iwamoto, Takahiro, Hagiwara, Natsuki, Nakashima, Takashi
• Granted Patent: US 9,292,046 B2
• Time in Patent Office: Days
• US Class Current: 349/12
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 2201/465 Snap -fit
• CPC Class Codes: G02F 2202/28 Adhesive materials or arrangements
• CPC Class Codes: G06F 1/1601 Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays constructional details related to flat displays integrated in a portable computer, e.g. laptop, handheld computer G06F1/1637; constructional details related to television receivers H04N5/64
• CPC Class Codes: G06F 1/1615 with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function constructional details of portable telephones comprising a plurality of mechanically joined movable body parts H04M1/0206
• CPC Class Codes: G06F 1/1628 Carrying enclosures containing additional elements, e.g. case for a laptop and a printer
• CPC Class Codes: G06F 2200/1612 Flat panel monitor
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G07G 1/0018 Constructional details, e.g. of drawer, printing means, input means
• CPC Class Codes: H04N 5/64 Constructional details of receivers, e.g. cabinets or dust covers furniture aspects of television cabinets A47B81/06

Abstract

Provided is a display device, including: a display unit (31); a touch panel (32) stacked on a front part of the display unit (31); and a case for housing the touch panel (32) and the display unit (31). The case includes: a rear case (21); and a front case (22) removably attached to the rear case (21), which has an opening portion for exposing a touch detection region and a visible region of the touch panel (32) and the display unit (31) stacked together. The display unit (31) is mounted to the rear case (21), and the touch panel (32) is mounted to the front case (22).

Claims

1. A display device, comprising:

a display unit;

a touch panel stacked on a front part of the display unit; and

a case for housing the touch panel and the display unit,

the case comprising;

a rear case; and

a front case removably attached to the rear case, the front case having an opening portion for exposing a touch detection region and a visible region of the touch panel and the display unit stacked together,

the display unit being mounted to the rear case,

the touch panel being mounted to the front case.

2. A display device according to claim 1, wherein the front case is removably fixed to the rear case without using an attaching and detaching tool.

3. A display device according to claim 1, further comprising a first cushioning member provided between a periphery of the opening portion of the front case and a non-touch detection region of a front surface of the touch panel,

the first cushioning member comprising:

a double-side coated tape or an adhesive layer formed on a front surface of the first cushioning member, which is opposed to the front case; and

a double-side coated tape or an adhesive layer formed on a back surface of the first cushioning member, which is opposed to the touch panel,

wherein the touch panel is fixed to the front case with the double-side coated tape or the adhesive layer formed on the front surface of the first cushioning member after the back surface of the first cushioning member is attached onto the front surface of the touch panel in advance.

4. A display device according to claim 3, further comprising a second cushioning member provided between a back surface of the touch panel and an invisible region of a front surface of the display unit,

the second cushioning member comprising a double-side coated tape or an adhesive layer formed on a front surface of the second cushioning member, which is opposed to the touch panel,

wherein the touch panel is fixed to the front case under a state in which the front surface of the second cushioning member is attached onto the back surface of the touch panel in advance.

5. A display device according to claim 1, further comprising a cushioning tape,

the cushioning tape comprising:

a first cushioning member provided between a periphery of the opening portion of the front case and a non-touch detection region of a front surface of the touch panel;

a second cushioning member provided between a back surface of the touch panel and an invisible region of a front surface of the display unit; and

a film having a flexibility and a width direction, for coupling the first cushioning member and the second cushioning member to each other,

wherein a front surface of the first cushioning member is attached onto a first film surface at one end side of the film in the width direction,

wherein the film comprises a double-side coated tape or an adhesive layer formed on a second film surface at the one end side of the film in the width direction,

wherein a back surface of the second cushioning member is further attached onto the first film surface at another end side of the film in the width direction,

wherein the second cushioning member comprises a double-side coated tape or an adhesive layer formed on a front surface of the second cushioning member, and

wherein the touch panel is fixed to the front case with the double-side coated tape or the adhesive layer formed on the second surface of the film after the front surface of the second cushioning member is attached onto the back surface of the touch panel in advance and the cushioning tape is wrapped around the touch panel so that a region of the first surface of the film at a position between the first cushioning member and the second cushioning member abuts on an end surface of the touch panel, and that a back surface of the first cushioning member abuts on the front surface of the touch panel.

6. A display device according to claim 2,

wherein the rear case comprises:

a first depressed portion formed upward on an upper side of an inner surface of the rear case; and

a second depressed portion formed on a lower side of the inner surface,

wherein the front case comprises;

a first claw formed downward on an upper side of an inner surface of the front case corresponding to the first depressed portion of the rear case; and

a second claw formed on a lower side of the inner surface corresponding to the second depressed portion of the rear case, and

wherein the first claw of the front case is engaged with the first depressed portion of the rear case from a top, and the second claw of the front case is engaged with the second depressed portion of the rear case so that the front case is removably fixed to the rear case without using the attaching and detaching tool.

7. A display device according to claim 6,

wherein the rear case further comprises a disengagement mechanism for disengaging the second claw of the front case from the second depressed portion by pushing the front case fixed to the rear case in response to operation,

wherein the disengagement mechanism comprises an operation lever exposed through a side surface of the rear case, for receiving the operation from a user,

wherein the case further comprises a side panel for covering the side surface between the rear case and the front case, which are coupled to each other, including the operation lever, and

wherein the side panel is removably fixed to the rear case and the front case, which are coupled to each other, without using the attaching and detaching tool.