ES2165818A1 - Antiferroelectrical cells or LCD screens with analogue grey scale, without maintenance tension, and method of manufacture - Google Patents

Antiferroelectrical cells or LCD screens with analogue grey scale, without maintenance tension, and method of manufacture

Info

Publication number
ES2165818A1
ES2165818A1 ES200002172A ES200002172A ES2165818A1 ES 2165818 A1 ES2165818 A1 ES 2165818A1 ES 200002172 A ES200002172 A ES 200002172A ES 200002172 A ES200002172 A ES 200002172A ES 2165818 A1 ES2165818 A1 ES 2165818A1
Authority
ES
Spain
Prior art keywords
cells
antiferroelectrical
manufacture
grey scale
tension
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
ES200002172A
Other languages
Spanish (es)
Other versions
ES2165818B2 (en
Inventor
Sanchez Jose Manuel Oton
Arregui Xabier Quintana
Del Pozo Virginia Urruchi
Llorente Jose Luis Gayo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Universidad Politecnica de Madrid
Original Assignee
Universidad Politecnica de Madrid
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Universidad Politecnica de Madrid filed Critical Universidad Politecnica de Madrid
Priority to ES200002172A priority Critical patent/ES2165818B2/en
Publication of ES2165818A1 publication Critical patent/ES2165818A1/en
Application granted granted Critical
Publication of ES2165818B2 publication Critical patent/ES2165818B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Liquid Crystal (AREA)

Abstract

Antiferroelectrical cells or LCD screens with analogue grey scale, without maintenance tension, and method of manufacture.These antiferroelectrical LCD cells usually present, with respect to the tension, a symmetrical optical response between crossed polarizers. In this invention are described:- The behaviour of these cells when they exhibit an asymmetric response, which implies that the curve of optical hysteresis is displaced in its totality according to the axis of applied tensions, producing different optical responses in the positive and negative semi-cycle.- The fundamental advantages of the asymmetric behaviour, which are obtained from static grey scale images, correction of blinking, and elimination of the maintenance tension in the waveform.- A method of manufacture of these cells using asymmetrical equipment on the faces of the cell with diverging orientation.- The necessary waveforms for their control, reducing the semi-cycle of DC compensation but maintaining the product voltage x time or eliminating it completely so that the control pulses become bipolar.
ES200002172A 2000-09-04 2000-09-04 ANTIPHERROELECTRIC LIQUID CRYSTAL CELLS OR SCREENS WITH ANALOG GRAY SCALE WITHOUT MAINTENANCE VOLTAGE, AND ITS MANUFACTURING METHOD. Expired - Lifetime ES2165818B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES200002172A ES2165818B2 (en) 2000-09-04 2000-09-04 ANTIPHERROELECTRIC LIQUID CRYSTAL CELLS OR SCREENS WITH ANALOG GRAY SCALE WITHOUT MAINTENANCE VOLTAGE, AND ITS MANUFACTURING METHOD.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200002172A ES2165818B2 (en) 2000-09-04 2000-09-04 ANTIPHERROELECTRIC LIQUID CRYSTAL CELLS OR SCREENS WITH ANALOG GRAY SCALE WITHOUT MAINTENANCE VOLTAGE, AND ITS MANUFACTURING METHOD.

Publications (2)

Publication Number Publication Date
ES2165818A1 true ES2165818A1 (en) 2002-03-16
ES2165818B2 ES2165818B2 (en) 2003-04-01

Family

ID=8494842

Family Applications (1)

Application Number Title Priority Date Filing Date
ES200002172A Expired - Lifetime ES2165818B2 (en) 2000-09-04 2000-09-04 ANTIPHERROELECTRIC LIQUID CRYSTAL CELLS OR SCREENS WITH ANALOG GRAY SCALE WITHOUT MAINTENANCE VOLTAGE, AND ITS MANUFACTURING METHOD.

Country Status (1)

Country Link
ES (1) ES2165818B2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0582519A1 (en) * 1992-08-06 1994-02-09 Showa Shell Sekiyu Kabushiki Kaisha Liquid crystal composition, and element and device using the same
US5316694A (en) * 1992-03-27 1994-05-31 Chisso Corporation Antiferroelectric liquid crystal composition
JPH08253441A (en) * 1995-01-20 1996-10-01 Showa Shell Sekiyu Kk Liquid crystal compound having asymmetric carbon in 5-membered ring and liquid crystal composition containing the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5316694A (en) * 1992-03-27 1994-05-31 Chisso Corporation Antiferroelectric liquid crystal composition
EP0582519A1 (en) * 1992-08-06 1994-02-09 Showa Shell Sekiyu Kabushiki Kaisha Liquid crystal composition, and element and device using the same
JPH08253441A (en) * 1995-01-20 1996-10-01 Showa Shell Sekiyu Kk Liquid crystal compound having asymmetric carbon in 5-membered ring and liquid crystal composition containing the same

Also Published As

Publication number Publication date
ES2165818B2 (en) 2003-04-01

Similar Documents

Publication Publication Date Title
US8203513B2 (en) Low color shift liquid crystal display and its driving method
JP4278510B2 (en) Liquid crystal display device and driving method
KR101396688B1 (en) Liquid crystal display device and driving method thereof
US20080158203A1 (en) Liquid Crystal Display Apparatus and Method for Driving the Same
KR0176295B1 (en) Liquid crystal display device
US6118421A (en) Method and circuit for driving liquid crystal panel
JP5047640B2 (en) Display device driving device and display device having the same
KR20100018322A (en) Liquid crystal display and control mehtod of the same
JP2005141216A (en) Liquid crystal display device and method of compensating image signal
KR20140122883A (en) Display device
US20180293928A1 (en) Driving circuit and liquid crystal display device thereof
JP3638288B2 (en) Liquid crystal display
US8587502B2 (en) Liquid crystal panel driving device, method for driving liquid crystal panel, liquid crystal display device, and in-vehicle display device
ES2165818A1 (en) Antiferroelectrical cells or LCD screens with analogue grey scale, without maintenance tension, and method of manufacture
KR20070043358A (en) Common voltage compensation method for liquid crystal display
KR20010107715A (en) Method of driving liquid crystal display
KR20080017917A (en) Display device
CN101939779B (en) Driving circuit for liquid crystal display device
KR102511042B1 (en) Liquid Crystal Display Device And Method for Driving Thereof
KR102526019B1 (en) Display device
KR100900549B1 (en) Liquid crystal display and driving method thereof
KR20070064111A (en) Lcd and drive method thereof
JPH04360192A (en) Liquid crystal display device
JPH04265938A (en) Driving method for liquid crystal electrooptic element
KR20040103281A (en) Apparatus of driving liquid crystal display

Legal Events

Date Code Title Description
EC2A Search report published

Date of ref document: 20020316

Kind code of ref document: A1

Effective date: 20020316

FG2A Definitive protection

Ref document number: 2165818B2

Country of ref document: ES