Title:
SENSOR ARRAY, MATRIX-TYPE SENSOR ARRAY AND TOUCH DISPLAY
Document Type and Number:
WIPO Patent Application WO/2013/046618
Kind Code:
A1
Abstract:
A sensor array includes a plurality of pixel sensor circuits; and a current-mode readout circuit to sample signals generated in each pixel sensor circuit; and addressing circuitry to individually select each pixel sensor circuit. Each pixel sensor circuit includes: a transducer which converts a physical property to be measured to an electrical signal; and an amplifying element coupled to the transducer and configured to output a signal current which varies as a function of the measured physical property. The current-mode readout circuit includes: a sense signal line coupled to each of the amplifying elements in order to monitor the voltage presented across the amplifying element of the selected pixel sensor circuit; a drive signal line coupled to an output of each of the amplifying elements in order to provide a constant bias voltage to the amplifying element of the selected pixel sensor circuit; and a current conveyor circuit coupled to the sense signal line and drive signal line and configured to monitor the voltage presented across the amplifying element of the selected pixel sensor circuit using the sense signal line, provide the constant bias voltage to the amplifying element of the selected pixel sensor circuit using the drive signal line, and produce an output which is a function of the output signal current of the amplifying element of the selected pixel sensor circuit.
Inventors:
ISLAMKULOV DAUREN
CASTILLO SERGIO GARCIA
BROWN CHRISTOPHER JAMES
CASTILLO SERGIO GARCIA
BROWN CHRISTOPHER JAMES
Application Number:
PCT/JP2012/006039
Publication Date:
April 04, 2013
Filing Date:
September 21, 2012
Export Citation:
Assignee:
SHARP KK (JP)
ISLAMKULOV DAUREN
CASTILLO SERGIO GARCIA
BROWN CHRISTOPHER JAMES
ISLAMKULOV DAUREN
CASTILLO SERGIO GARCIA
BROWN CHRISTOPHER JAMES
International Classes:
G06F3/041; G01D3/02; H04N5/374; H04N5/378
Domestic Patent References:
| WO2005034188A2 | 2005-04-14 | |||
| WO2009038824A1 | 2009-03-26 | |||
| WO2011058779A1 | 2011-05-19 |
Foreign References:
| US7782383B2 | 2010-08-24 |
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (2-6 Tenjinbashi 2-chome Kita, Kita-ku, Osaka-sh, Osaka 41, JP)
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Claims: