LCD display element with reduce crosstalk at the intersection of row leads and row electrodes

US8587570B2 · kind B2 · utility

Assignee

• BMG Gesellschaft fuer moderne Informationssysteme mbH · DE

Inventors

• Reiner Bayrle · Langenau, DE
• Thomas Bitter · Bad Ditzenbach, DE
• Otto Bader · Warthausen, DE
• Arnold Simon · Neu-Ulm, DE

Key dates

• Filing date: Jul 7, 2010
• Grant date: Nov 19, 2013
• Expiry date: Aug 19, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G09G2300/0426
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Crosstalk in the area of intersection between row leads and row electrodes as well as undesired optical effects are avoided in an LCD display element. An LCD display panel is made of the disclosed LCD display elements. By extending the row leads over the full width of the rectangular viewing area in which information is visually displayed, the portion of the viewing area that cannot be controlled by proper drive voltage pulses is minimized. Thus, undesired crosstalk and optical effects are reduced. By driving row electrodes using column voltage sequences of the prior art and by driving column electrodes using row voltage sequences of the prior art, row and column voltage sequences are generated such that an intermediate area of liquid crystal located between the row leads and corresponding row electrodes cannot be driven to a voltage that produces an intermediate condition between an ON condition and an OFF condition.