Peter J. Wild(German:[ˈvɪlt];born 1939) is aSwisselectronics engineerand a pioneer ofliquid-crystal display(LCD) technology.
Biography
editPeter Josef Wild was born and educated inSt. Gallen,Switzerland.He studiedelectrical engineeringat the Swiss Federal Institute of Technology in Zurich (ETH Zurich) and graduated in 1963.[1]
From 1965 to 1968 he worked in theSan Francisco Bay Area,California, as development engineer and obtained aMaster of Sciencedegree from the Department of Electrical Engineering and Computer Science atUC Berkeley.After his return to Switzerland in 1969, he joined the new Corporate Research Center ofBrown, Boveri & Cie(nowABB) inBaden, Switzerland,developed a phase measurement for an opto-electric current meter on high-voltage lines based on theFaraday effectworking withAndre Jaecklinand became the first member of a team developing LCDs from 1970 onwards.[2]
In 1980, he started working in the Swiss telecommunications industry for the rest of his career.[1]
Achievements
editInitially, Wild investigated earlier LCD work done at theRCA Laboratoriesin the US. Thereafter, Brown Boveri entered into a joint venture withRocheinBaselto explore LCD technologies. As part of this common project,physicistsat Roche discovered and patented theTwisted nematic field effect(TN).Also, new room-temperature liquid crystal compounds for the TN effect were developed during this cooperation.[3]
Wild recognized early-on, that matrix-addressing of such displays was important for many potential applications to show images (such as flat-screencomputer monitors). Results of his work in this field were published.[4][5][6]In particular, Wild discovered, that theRMS voltageof the driving waveforms of LCD matrix displays is relevant for the electrooptic threshold and is not to be exceeded at partially-addressedpixelsofpassive-matrix displays.[7]
Pioneering work of his team included experiments withLCD projectors[7][8][9]as well as illumination schemes forbacklitpanels resulting in corresponding patents.[10]More than 20 patent applications where filed naming Wild as inventor or co-inventor.[11]
He helped setting up manufacturing of TN LCDs at a new factory inLenzburg,Switzerland, which started deliveries in 1974, mainly to manufacturers ofdigital watches,[12]such asCasioofJapan,which used these LCDs to launch its first quartzwristwatcheswith digital time display under theCasiotronbrand.[2]
References
edit- ^abPeter Josef Wild: "Bewegliche Ordnung. Die BBC als Pionierin bei den Flüssigkristall-Matrixanzeigen". In:Franz Betschon et al. (editors): Ingenieure bauen die Schweiz – Technikgeschichte aus erster Hand.Neue Zürcher Zeitung,NZZ Libro, Zurich 2013, Biography Peter Wild, p. 522.
- ^abPeter J. Wild:"Liquid Crystal Display Evolution – Swiss Contributions."Engineering and Technology History Wiki.Retrieved 30 July 2022.
- ^A. Boller, H. Scherrer,M. Schadt,P. Wild: "Low Electrooptic Threshold in New Liquid Crystals",Proc. IEEE,vol. 60, no. 8, pp. 1002–1003, August 1972
- ^P. J. Wild, J. Nehring: "Turn-on Time Reduction and Contrast Enhancement in Matrix-addressed Liquid-crystal Light Valves,"Appl. Phys. Lett.,vol. 19, no. 9, pp. 335–336, November 1971.
- ^Peter U. Schulthess and Peter J. Wild:Driving circuit for a matrix-addressed Liquid Crystal Display device.US Patent 4082430 (A), espacenet.com. Retrieved 8 July 2022.
- ^"Liquid crystal leads reduced." In:Electronics,25 October 1971, pp. 33–34
- ^abP. J. Wild:Matrix-addressed Liquid Crystal Projection Display,Digest of Technical Papers, International Symposium, Society for Information Display, pp. 62–63, June 1972
- ^Slide sandwiched to liquid crystal gives variable display.In:Electronics,8 May 1972, p. 78
- ^Nikki Kahl:LCD Technology its Origins.Projector Reviews, 11 July 2017. Retrieved 8 July 2022.
- ^Patent US4096550:Illuminating Arrangement for a Field-effect Liquid-crystal Display as well as Fabrication and Application of the Illuminating Arrangement,filed 15 October 1976, published 20 June 1978, inventors: W. Boller, M. Donati, J. Fingerle, P. Wild
- ^Inventor Peter Wild, assignee Brown, Boveri & Cie.patents.google.com. Retrieved 14 July 2022.
- ^Andreas Moglestue:"The wristwatch connection."100 Years of ABB Review: Looking back on a century in print.ABB Review 2|2014, p. 12. Retrieved 8 July 2022.