EP 1673760 A1 20060628 - LIQUID CRYSTAL MICRODISPLAY AND CONTROL METHOD THEREOF
Title (en)
LIQUID CRYSTAL MICRODISPLAY AND CONTROL METHOD THEREOF
Title (de)
FLÜSSIGKRISTALLMIKRODISPLAY UND STEUERVERFAHREN DAFÜR
Title (fr)
MICRO-ECRAN DE VISUALISATION A CRISTAUX LIQUIDES ET SON PROCEDE DE COMMANDE
Publication
Application
Priority
- EP 2004052408 W 20041001
- FR 0312186 A 20031017
Abstract (en)
[origin: WO2005036518A1] The invention relates to matrix liquid crystal microdisplays and, in particular, to those which are produced on a monolithic silicon substrate containing integrated electronic circuits for controlling a matrix array of liquid crystal cells. According to the invention, the matrix comprises, for each intersection point between a line and a column, an elementary electronic circuit for controlling an elementary liquid crystal cell which is located at said intersection. The circuit comprises at least one storage capacity (Ca, Cb) which is used to store an analog voltage applied by the column for the duration of an image frame, a first terminal of the storage capacity being connected to the gate of the transistor (Ta, Tb), and, in series between two voltage supply terminals, an elementary current source (SC1) and a switching transistor (Ta, Tb), the drain of the switching transistor being connected to the liquid crystal cell (LC). In addition, a periodic voltage ramp, which is common to all of the cells of at least one line, is applied to a second terminal of the storage capacity of the cells belonging to said line.
IPC 1-7
IPC 8 full level
CPC (source: EP KR US)
G02F 1/133 (2013.01 - KR); G09G 3/20 (2013.01 - KR); G09G 3/36 (2013.01 - KR); G09G 3/3648 (2013.01 - EP US); G09G 3/2014 (2013.01 - EP US); G09G 2310/0235 (2013.01 - EP US); G09G 2310/0259 (2013.01 - EP US)
Citation (search report)
See references of WO 2005036518A1
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
FR 2861205 A1 20050422; FR 2861205 B1 20060127; CA 2536216 A1 20050421; CN 100447851 C 20081231; CN 1867962 A 20061122; EP 1673760 A1 20060628; JP 2007508592 A 20070405; KR 20070029626 A 20070314; US 2007057890 A1 20070315; WO 2005036518 A1 20050421
DOCDB simple family (application)
FR 0312186 A 20031017; CA 2536216 A 20041001; CN 200480030371 A 20041001; EP 04791120 A 20041001; EP 2004052408 W 20041001; JP 2006534747 A 20041001; KR 20067005863 A 20060324; US 56844904 A 20041001