Title:
DISPLAY DEVICE AND DRIVE METHOD FOR SAME
Document Type and Number:
WIPO Patent Application WO/2012/014865
Kind Code:
A1
Abstract:
Disclosed is a display device having an optical sensor with increased sensitivity. The display device is provided with: a display panel, which includes a plurality of display pixel circuits (8) and a plurality of sensor pixel circuits (9a) in a display region (4); and a drive circuit (7) which supplies a drive signal to the sensor pixel circuits (9a). The sensor pixel circuits (9a) are provided with: a light receiving element (PD1); a storage node (INT), which retains electrical charge corresponding to the light amount which has entered into the light receiving element (PD1); and a read-out switching element (M1), which is connected to the storage node (INT). The display device is further provided with a first switching element (T1), which is connected between the light receiving element (PD1) and the storage node (INT), and which operates in a saturation region, and a second switching element (T2) which resets the storage node (INT).
Inventors:
YAMAMOTO Kaoru (())
山本 薫 (())
SUGITA Yasuhiro (())
山本 薫 (())
SUGITA Yasuhiro (())
Application Number:
JP2011/066903
Publication Date:
February 02, 2012
Filing Date:
July 26, 2011
Export Citation:
Assignee:
SHARP KABUSHIKI KAISHA (22-22, Nagaike-cho Abeno-ku, Osaka-sh, Osaka 22, 〒5458522, JP)
シャープ株式会社 (〒22 大阪府大阪市阿倍野区長池町２２番２２号 Osaka, 〒5458522, JP)
YAMAMOTO Kaoru (())
山本 薫 (())
シャープ株式会社 (〒22 大阪府大阪市阿倍野区長池町２２番２２号 Osaka, 〒5458522, JP)
YAMAMOTO Kaoru (())
山本 薫 (())
International Classes:
G06F3/042; G02F1/133; G06F3/041; G09F9/00; G09F9/30; G09G3/20
Attorney, Agent or Firm:
KAWAKAMI Keiko et al. (Intelix International, Aqua Dojima West 4-16, Dojimahama 1-chome, Kita-ku, Osaka-sh, Osaka 04, 〒5300004, JP)
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Claims:
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