DISPLAY DEVICE COMPRISING A NOTABLY HAPTIC TOUCH SURFACE AND A FLEXIBLE ELECTRICAL SHIELD

• US 20160085306A1
• Filed: 09/22/2015
• Published: 03/24/2016
• Est. Priority Date: 09/22/2014
• Status: Abandoned Application

• Current Assignee: Thales SA
• Original Assignee: Thales SA
• Inventors: MOZER, Laurent, FLOUREZ, Marina, ABOMNES, Pascal
• Application Number:
  US14/862,109
• Publication Number:
  US 20160085306A1
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 2203/04107 Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
• CPC Class Codes: G06F 3/016 Input arrangements with force or tactile feedback as computer generated output to the user
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means

Abstract

The general field of the invention is that of flat-screen display devices comprising a touch surface. Such a device comprises a conductive mechanical holder in which are housed:

• • on the bottom of the holder, a display panel comprising, on its upper face, a transparent electrical shielding film of dimensions substantially identical to those of the matrix panel; and
  • a touch panel of dimensions substantially identical to those of the display panel, said touch panel being located above said display panel, its lower face being placed just above the shielding film.

The display device according to the invention comprises a flexible conductive film that forms the ground path between the electrical shielding film and the bottom of the conductive mechanical holder, the conductive film and the shielding film making contact on the periphery of the display panel.

Claims

1. A flat-screen display device comprising a touch surface, said device comprising at least one conductive mechanical holder in which are housed:

on the bottom of the holder, a matrix display panel comprising, on its upper face, a transparent electrical shielding film of dimensions substantially identical to those of the matrix panel; and

a touch panel of dimensions substantially identical to those of the matrix display panel, said touch panel being located above said matrix display panel, its lower face being placed just above the shielding film;

wherein a flexible conductive film is used to form the ground path between the electrical shielding film and the bottom of the conductive mechanical holder, the flexible conductive film and the shielding film making contact on the periphery of the matrix display panel.

2. The display device according to claim 1, wherein the conductive film is fastened to the electrical shielding film by means of a conductive glue or a conductive adhesive or a conductive ink.

3. The display device according to claim 1, wherein the conductive film is a metallised nylon fabric.

4. The display device according to claim 1, wherein the matrix display panel is a liquid-crystal panel or an organic light-emitting diode panel or a matrix of electromechanical micro-mirrors.

5. The display device according to claim 1, wherein the display device comprises a haptic function ensured by vibrating means placed between the matrix display panel and the bottom of the holder, the conductive film being flexible enough not to interfere with the movements of the matrix display panel due to the haptic effect.