US 20020121640A1
(19) United States
(12) Patent Application Publication (io) Pub. No.: US 2002/0121640 Al
Yamazaki (43) Pub. Date: Sep. 5,2002
(54) ACTIVE MATRIX ELECTRO-LUMINESCENT DISPLAY WITH AN ORGANIC LEVELING LAYER
(75) Inventor: Shunpei Yamazaki, Tokyo (JP)
Correspondence Address:
FISH & RICHARDSON, PC
4350 LA JOLLA VILLAGE DRIVE
SUITE 500
SAN DIEGO, CA 92122 (US)
(73) Assignee: Semiconductor Energy Laboratory Co., Ltd., a Japanese corporation
(21) Appl. No.: 10/137,040
(22) Filed: Apr. 30, 2002
Related U.S. Application Data
(63) Continuation of application No. 09/414,906, filed on Oct. 8, 1999, which is a continuation of application
No. 09/360,341, filed on Jul. 22, 1999, now Pat. No. 6,169,293, which is a continuation of application No. 08/751,338, filed on Nov. 18, 1996, now Pat. No. 5,952,708.
(30) Foreign Application Priority Data
Nov. 17, 1995 (JP) 7-323674
Publication Classification
(51) Int. CI.7 11011. 29/04
(52) U.S. CI 257/72
(57) ABSTRACT
A resin material having a small relative dielectric constant is used as a layer insulation film 114. The resin material has a flat surface. A black matrix or masking film for thin film transistors is formed thereon using a metal material. Such a configuration prevents the problem of a capacity generated between the masking film and a thin film transistor.
