초록 ▼

A cathode ray tube and a plural beam electron gun therefor include a main lens that comprises a tubular focus grid G5 and a conductive coating on the inner surface of the tube neck. The neck coating extends from the region of focus grid G5 towards the faceplate of the cathode ray tube. Preferably, t

A cathode ray tube and a plural beam electron gun therefor include a main lens that comprises a tubular focus grid G5 and a conductive coating on the inner surface of the tube neck. The neck coating extends from the region of focus grid G5 towards the faceplate of the cathode ray tube. Preferably, the exit of the focus grid G5 is non-planar and is curved or undulated and focus grid G5 includes an aperture plate intermediate its entrance and exit. The aperture plate preferably has an elliptical center beam opening and connected-semi-elliptical outer-beam openings, to better converge and focus the outer and center electron beams. Also preferably, the focus grid G5 is centrally located in the tube neck and at least partly surrounded by the conductive neck coating.

대표청구항 ▼

A cathode ray tube and a plural beam electron gun therefor include a main lens that comprises a tubular focus grid G5 and a conductive coating on the inner surface of the tube neck. The neck coating extends from the region of focus grid G5 towards the faceplate of the cathode ray tube. Preferably, t

A cathode ray tube and a plural beam electron gun therefor include a main lens that comprises a tubular focus grid G5 and a conductive coating on the inner surface of the tube neck. The neck coating extends from the region of focus grid G5 towards the faceplate of the cathode ray tube. Preferably, the exit of the focus grid G5 is non-planar and is curved or undulated and focus grid G5 includes an aperture plate intermediate its entrance and exit. The aperture plate preferably has an elliptical center beam opening and connected-semi-elliptical outer-beam openings, to better converge and focus the outer and center electron beams. Also preferably, the focus grid G5 is centrally located in the tube neck and at least partly surrounded by the conductive neck coating. 64, 19930900, Ramesh, 428/688; US-5270298, 19931200, Ramesh, 505/001; US-5281834, 19940100, Cambou et al., 257/200; US-5310707, 19940500, Oishi et al., 501/126; US-5314547, 19940500, Heremans et al., 148/033.1; US-5326721, 19940700, Summerfelt, 437/131; US-5352926, 19941000, Andrews, 257/717; US-5356509, 19941000, Terranova et al., 117/058; US-5394489, 19950200, Koch, 385/014; US-5406202, 19950400, Mehrgardt et al., 324/251; US-5418389, 19950500, Watanabe, 257/295; US-5441577, 19950800, Sasaki et al., 136/244; US-5453727, 19950900, Shibasaki et al., 338/032.R; US-5466631, 19951100, Ichikawa et al., 438/406; US-5473047, 19951200, Shi, 528/310; US-5486406, 19960100, Shi, 428/209; US-5491461, 19960200, Partin et al., 338/032.R; US-5492859, 19960200, Sakaguchi et al., 438/459; US-5494711, 19960200, Takeda et al., 427/473; US-5504035, 19960400, Rostoker et al., 228/180.22; US-5504183, 19960400, Shi, 528/272; US-5511238, 19960400, Bayraktaroglu, 455/081; US-5515047, 19960500, Yamakido et al., 341/153; US-5515810, 19960500, Yamashita et al., 117/017; US-5528057, 19960600, Yanagase et al., 257/096; US-5528067, 19960600, Farb, 257/401; US-5549977, 19960800, Jin et al., 428/692; US-5552547, 19960900, Shi, 546/007; US-5572052, 19961100, Kashihara et al., 257/295; US-5596205, 19970100, Reedy et al., 257/009; US-5602418, 19970200, Imai et al., 257/627; US-5610744, 19970300, Ho et al., 359/118; US-5650646, 19970700, Summerfelt, 257/295; US-5656382, 19970800, Nashimoto, 428/620; US-5659180, 19970800, Shen et al., 257/025; US-5674366, 19971000, Hayashi et al., 204/298.09; US-5679965, 19971000, Schetzina, 257/103; US-5731220, 19980300, Tsu et al., 437/060; US-5754319, 19980500, Van De Voorde et al., 359/109; US-5777350, 19980700, Nakamura et al., 257/096; US-5789845, 19980800, Wadaka et al., 310/334; US-5792679, 19980800, Nakato, 310/334; US-5801072, 19980900, Barber, 438/107; US-5801105, 19980900, Yano et al., 438/785; US-5825055, 19981000, Summerfelt, 257/183; US-5827755, 19981000, Yonchara et al., 438/030; US-5828080, 19981000, Yano et al., 257/043; US-5833603, 19981100, Kovacs et al., 600/317; US-5863326, 19990100, Nause et al., 117/217; US-5872493, 19990200, Ella, 333/191; US-5874860, 19990200, Brunel et al., 330/285; US-5883564, 19990300, Partin, 338/032.R; US-5907792, 19990500, Droopad et al., 438/791; US-5912068, 19990600, Jia, 428/210; US-5948161, 19990900, Kizuki, 117/089; US-5959879, 19990900, Koo, 365/145; US-5987011, 19991100, Toh, 370/331; US-6002375, 19991200, Corman et al., 343/853; US-6011646, 20000100, Mirkarimi et al., 359/359; US-6022140, 20000200, Fraden et al., 374/158; US-6023082, 20000200, McKee et al., 257/295; US-6028853, 20000200, Haartsen, 370/338; US-6049702, 20000400