05541372 is referenced by 145 patents and cites 14 patents.

A touch screen device includes a panel; a sensor coupled to the panel for detection of a force applied to the panel and a data processor coupled to the sensor for processing data transmitted by the sensor upon detection of the force. The sensor is provided to be co-deformable with the panel for detecting a deformation of the panel itself as a result of the force being applied. This avoids the use of a rigid frame as in conventional devices, saving weight, costs and components, and reducing manufacturing problems. The sensor means may comprise strain gauges that are physically integrated with the panel. Combined with a display such device presents a minimum parallax.

Title
Force activated touch screen measuring deformation of the front panel
Application Number
73812
Publication Number
5541372
Application Date
February 15, 1995
Publication Date
July 30, 1996
Inventor
Arne L Duwaer
Eindhoven
NL
Gerardus J K M Koolen
Eindhoven
NL
Antonius J M Hafkamp
Doetinchem
NL
R emy Polaert
Limeil-Brevannes Cedex
FR
Kofi A A Makinwa
Eindhoven
NL
Theunis S Baller
Eindhoven
NL
Agent
Leroy Eason
Assignee
U S Philips Corporation
NY, US
IPC
G09G 3/02
G08C 21/00
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