ISSN:1071-0922    

DOI:10.1889/1.1984828

出版商:Blackwell Publishing Ltd    

年代:1993

数据来源: WILEY

摘要:

Abstract—This paper describes a method of measuring the resolution of a very‐fine‐grain phosphor screen without having to build a cathode‐ray tube. The method is based on contact‐printer technology and makes use of a master resolution pattern. This pattern is contact focused onto the screen under investigation. The resulting image is examined under a microscope to determine the finest resolution that can be detected visually in the manner of the shrinking‐raster technique used for tube evaluation. Data collected through this method are compared to data taken from 1‐in. high‐resolution tubes made for airborne applications. It is shown that the method produces results closely matched by the tube data. Several examples are given of the use of this method in measuring resolution of screens of various particle sizes and screen densities, and also the effect of fiber‐optic facepla

ISSN:1071-0922    

DOI:10.1889/1.1984829

出版商:Blackwell Publishing Ltd    

年代:1993

数据来源: WILEY

摘要:

Abstract—A new program package, DUCAD‐C, has been developed to assist in computer‐aided design of double‐mussel deflection coils. In contrast with the very abstract model of our existing package, DUCAD‐Y, this new package, DUCAD‐C, gives an exact description of a deflection coil based on the simulation of winding this coil in the mandrels. Since the coils calculated by DUCAD‐C agree very well with the corresponding real coil, DUCAD‐C is a very powerful tool for the development of new d

ISSN:1071-0922    

DOI:10.1889/1.1984830

出版商:Blackwell Publishing Ltd    

年代:1993

数据来源: WILEY

摘要:

Abstract—This paper describes the device structure and novel fabrication techniques for an experimental full‐color ac plasma display. This device is composed of three vertically stacked twin‐substrate single‐color ac plasma display devices, each containing a gas mixture whose discharge emits one of the primary (red‐green‐blue) visible colors. In this unique arrangement, unlike any other emissive color‐display device, each color pixel consists of three coaxially viewed and separately addressable single

ISSN:1071-0922    

DOI:10.1889/1.1984831

出版商:Blackwell Publishing Ltd    

年代:1993

数据来源: WILEY

摘要:

Abstract—We have developed a 46‐in. high‐resolution high‐luminance compact rear‐projection display that can automatically display in three modes: ID (NTSC), ID‐vista (NTSC), and HD. The main specifications of the display are 800 TV lines of horizontal resolution (aspect ratio 16:9), peak luminance of 1370 cd/m2, 100:1 contrast ratio, and depth of 672 mm. We report on the technology required to realize this high

ISSN:1071-0922    

DOI:10.1889/1.1984832

出版商:Blackwell Publishing Ltd    

年代:1993

数据来源: WILEY

摘要:

Abstract—A device that uses a video camera mounted behind an alternately transparent and opaque display screen is described. Eye contact is provided by synchronizing the camera shuttering and the transparent period of the scree

ISSN:1071-0922    

DOI:10.1889/1.1984833

出版商:Blackwell Publishing Ltd    

年代:1993

数据来源: WILEY

摘要:

Abstract—A multiplexed high‐luminance liquid‐crystal projection display with 5 Mpixels (2240 × 2240 dots) at a luminance level of 800 cd/m2using a conventional overhead projector has been developed. This display exhibits the bistability of a nematic‐cholesteric phase‐transition liquid crystal without the use of polarizers, and can display 5‐Mpixel data which matches the output of a high‐resolution printer, using a conventional overhead projector. A 4:1 contrast ratio and 2.2‐ms line‐addressing

ISSN:1071-0922    

DOI:10.1889/1.1984834

出版商:Blackwell Publishing Ltd    

年代:1993

数据来源: WILEY

摘要:

Abstract—A direct‐multiplexed ferroelectric liquid‐crystal display, having a contrast ratio as high as 35:1 without showing zigzag defects, has been realized by using an electrical conductive orientation polymer: a polypyrrole film together with a special material containing naphthalene‐based ferroelectric liquid crystals. The polypyrrole orientation films can effectively suppress the formation of depolarization fields, resulting in a stable memory capability and a high contras

ISSN:1071-0922    

DOI:10.1889/1.1984835

出版商:Blackwell Publishing Ltd    

年代:1993

数据来源: WILEY

摘要:

Abstract—By varying liquid‐crystal droplet sizes in designated regions, direct‐view polymer‐dispersed liquid‐crystal (PDLC) displays with simpler addressing schemes are constructed. A multiple‐droplet‐size PDLC is used to hide addressing‐line voltage effects in a segmented display which requires a clear (non‐scattering) region surrounding the segments. Edge lighting improves the contrast ratio of these dir

ISSN:1071-0922    

DOI:10.1889/1.1984836

出版商:Blackwell Publishing Ltd    

年代:1993

数据来源: WILEY

摘要:

Abstract—Conventional TFT TN‐LCDs display full‐color images only within a narrow vertical viewing angle. Viewed obliquely, the display reverses or brightens. We studied these problems by calculating the light propagation through TN cells and concluded that these reversal phenomena are unavoidable in TN‐LCDs. To widen the viewing angle, we propose a film‐laid double‐twisted‐nematic display (FDTN), consisting of a conventional TN panel, a light‐compensation panel, and two retardation films stacked together. The problem of black images appearing purple is solved using a clockwise‐twisted nematic panel as an optical compensator. The viewing angle of the FDTN‐LCD is about 1.5 times that of the conventional positive TN‐LCD. The contrast ratio normal to

ISSN:1071-0922    

DOI:10.1889/1.1984837

出版商:Blackwell Publishing Ltd    

年代:1993

数据来源: WILEY