Title:
DRIVING METHOD OF LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2739266
Kind Code:
B2
Abstract:
PURPOSE: To prevent a CMOS transfer gate from being turned ON by mistake and discharged when a pixel is not selected by limiting the condition of signal potentials, etc., of data lines and gate lines based on the threshold voltage of an NMOS or PMOS.
CONSTITUTION: The NMOS and PMOS of each pixel are connected to the same gate line Xn and the drains of the PMOS and NMOS are connected to a data line Ym. The potential VD applied to the data line Ym ranges from VD1 to VD2 (VD1≤VD≤VD2) and -Vth(N)<VD1 ≤VD≤VD2<Vth(P) holds, where the voltage of the gate line Xn in nonselection mode is 0, Vth(N) is the threshold voltage of the NMOS of a CMOS transfer gate circuit, and Vth(P) is the threshold voltage of the PMOS. Strictly under the condition, an image of high quality which is free from crosstalk can be displayed.
Inventors:
Takehiko Yasuhiko
Hiro Masaaki Ki
Hiro Masaaki Ki
Application Number:
JP14332092A
Publication Date:
April 15, 1998
Filing Date:
May 09, 1992
Export Citation:
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
International Classes:
G02F1/133; G02F1/136; G02F1/1368; G09G3/36; H01L21/336; H01L27/12; H01L29/78; H01L29/786; (IPC1-7): G02F1/133; G09G3/36
Domestic Patent References:
| JP4102825A | ||||
| JP350528A |