(58) Field of Classification Search ................ .. 257/403; 438/151, 22, 157; 365/185.08 See application file for complete search history.
(56) References Cited U.S. PATENT DOCUMENTS 5,043,946 A * 8/1991 Yamauchiet al. ..... .. 365/185.08 5,488,243 A * 1/1996 Tsuruta et al. .............. .. 257/314 5,801,993 A * 9/1998 365/185.28 5,963,476 A * 10/1999 .. 365/185.22 5,981,335 A * 11/1999 438/253 6,201,734 B1* 3/2001 365/185.1 6,248,626 B1* 6/2001 438/257 6,638,627 B2* 10/2003 428/446 6,674,138 B1* 1/2004 Halliyal et al. . . . . . . . . . .. 257/411 6,903,969 B2* 6/2005 Bhattacharyya 365/185.08 2002/0048190 A1* 4/2002 King ............ .. 365/185.18 2002/0105023 A1* 8/2002 Kuo et al. ..... .. 257/318 2004/0007734 A1* 1/2004 Kato et al. .................. .. 257/324
Primary Examiner 4 Michael Shingleton
(74) Attorney, Agent, or Firm 4 McKenna Long & Aldridge, LLP. (57) ABSTRACT
An organic electroluminescent display device includes a substrate, gate and data lines on the substrate and crossing each other to define a pixel region, a switching element at each crossing point of the gate and data lines, a driving element coupled to the switching element, a field control electrode coupled to the driving element and overlapping a channel of the driving element, and an organic electroluminescent diode coupled to the driving element.
9 Claims, 12 Drawing Sheets
8 9 8* I1 3 \ \ F-I W 1 -“BF” 3 J 8 ’"“\___/F— g\\ /_\j A 5-__ p 0 CL i-\Je L. _:1_ IL/-I I I I 1 1- 5.?” N m Q OJ\/ J -P*\1/1"“ 2:; , 9 Q H”\\L/P Q T :1: CI CL %i%\v/P I .\\\R\
FIG. Prior Art VDD 13 I Ll ISZ‘“,,\E T E 10 I——— s--I l f I 2 15% C81 Y FIG. 3
diode 1 II N2 N1 Io - - _ _ L _ _ _ _ __ t=-10 MI / driving element pl 1' _____ “' "*'“ M2 -' V(VDD) FIG. 43 Prior Art 1/10
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