Display. Special Contribution from IDW'99. A New Electron Gun for Color Monitor Tubes with Large and Perfectly Flat Screen.

Wada, Yasufumi; Daimon, T.

doi:10.3169/itej.54.1208

Cited by 1 publication

(5 citation statements)

References 0 publications

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“…The overall gun structure for the 76cm 120-degree 29.1mm neck tube is similar to the existing gun [4], as shown in Fig.8. Dynamic voltage Vdyn is applied to G5-2 and G4 by superposing on the second focus voltage Vfoc2 while the first focus voltage Vfoc1 is applied to G5-1 and G3, where Vfoc2 is lower than Vfoc1 by the amount of the positive astigmatism.…”

Section: Gun Designmentioning

confidence: 80%

“…On the other hand, for the vertical spot size, a large lens diameter does not need any more because the size generally gets too small at the screen periphery. Therefore, in order to improve the spot distortion at the screen periphery, we have developed a new main lens named "E4" (Eccentric Electricfield with Eaves Electrodes) with an asymmetrical lens of the horizontally large and vertically small diameters based on the main lens with positive astigmatism [4].…”

Section: Main Lens Design 31 Design Conceptmentioning

confidence: 99%

“…The structure of E4 main lens is shown in Fig.2; (a) for the perspective of the main lens, (b) for the vertical cross section, (c) for the front view of the focus-electrode, and (d) for the front view of the anode-electrode. In the focus-electrode, a field-formingelectrode of a plate type with three apertures is welded to the main-electrode, in the same way as the existing main lens [4,6].…”

Section: Structurementioning

confidence: 99%

“…In contrast to the existing main lens [4,5], the strong positive astigmatism can be easily applied to the main lens by elongating the height of the eaves electrodes because no field-formingelectrode exists in the anode-electrode.…”

Section: Lens Actionmentioning

confidence: 99%

“…To solve the above problems, we have developed a new electron gun in 29.1mm neck diameter for 76cm 120-degree deflection angle color TV tubes with an aspect ratio of 16:9. To improve the spot distortion at the screen periphery and to reduce the dynamic voltage, a new main lens with the positive astigmatism [4] has been developed having an asymmetrical lens of horizontally large and vertically small lens diameters.…”

Section: Introductionmentioning

confidence: 99%

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