Title:
THIN-FILM TRANSISTOR SUBSTRATE, DISPLAY DEVICE PROVIDED WITH SAME, AND METHOD FOR PRODUCING THIN-FILM TRANSISTOR SUBSTRATE
Document Type and Number:
WIPO Patent Application WO/2012/066745
Kind Code:
A1
Abstract:
In the present invention, in at least one operation control TFT (27N, 27P) that configures a control circuit (27), an impurity of a type that generates an impurity level of a channel region (33c) is caused to be included in the channel region (33c) as a threshold adjustment impurity, and the concentration of the threshold adjustment impurity is caused to be higher than the concentration of the same threshold adjustment impurity in the channel regions (33c) of other TFTs (21, 25, 28) of the same type, thus causing the absolute value of the threshold voltage to be greater than that of the other TFTs (21, 25, 28) of the same type.
Inventors:
SAITOH MASAKI
MAKITA NAOKI
MAKITA NAOKI
Application Number:
PCT/JP2011/006226
Publication Date:
May 24, 2012
Filing Date:
November 08, 2011
Export Citation:
Assignee:
SHARP KK (JP)
SAITOH MASAKI
MAKITA NAOKI
SAITOH MASAKI
MAKITA NAOKI
International Classes:
H01L29/786; G02F1/1368; G09F9/30
Foreign References:
| JP2002229532A | 2002-08-16 | |||
| JP2008118047A | 2008-05-22 | |||
| JP2008235905A | 2008-10-02 | |||
| JP2007042730A | 2007-02-15 | |||
| JP2004246349A | 2004-09-02 |
Attorney, Agent or Firm:
MAEDA, Hiroshi et al. (JP)
Hiroshi Maeda (JP)
Hiroshi Maeda (JP)
Download PDF:
Claims: