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Picture display device

A technology for display devices and display screens, applied in image/graphic display tubes, electrical components, discharge tubes, etc., to solve problems such as image quality degradation

Inactive Publication Date: 2005-10-26
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in a degradation of the image quality produced on the display

Method used

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Examples

Experimental program
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Embodiment Construction

[0027] figure 1 A display device 1 according to the prior art is shown.

[0028] This figure corresponds to figure 2 of US 5,781,166, please refer to this patent document for further details. The content of US 5,781,166 is hereby incorporated by reference. The display device comprises a network 10 of transfer tubes (herein also referred to as “electron transport tubes”) branching off at point 13 . The electron flow introduced into the network 10 (in this case at point 11 ) is then directed towards the outlet 12 via a number of electron nodes 13 (hereinafter also referred to as “current nodes”) interconnected by transfer tubes 14 .

[0029] In this example, at each of said electron junctions 13, the electron flow is directed in one of two directions. Current nodes can be considered as nodes of the network 10 . In this example, the outlets form a two-dimensional or three-dimensional array, and the nodes of the network also form a two-dimensional or three-dimensional array. ...

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PUM

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Abstract

A display device (1) comprises a luminescent display screen (15), and means for directing electrons towards the display screen (15). Said means comprises comprise an arrangement of at least three plates (36, 41, 42), with a middle plate (36) having selection apertures, and selection electrodes associated with the selection apertures. The selection apertures, the selection electrodes and the plates are arranged for having the electron currents, on their way from a source to the electroluminescent screen, selectively pass the apertures in the middle plate and alternately run at opposite sides of the middle plate. An anti-leakage layer (44, eg) for providing in operation a tunneling counteracting potential is provided on a plate of the arrangement to prevent leakage of electrons through gaps between the middle plate and an adjacent plate.

Description

technical field [0001] The present invention relates to a display device comprising a vacuum-tight enclosure having a luminous display screen on its inner wall, said vacuum-tight enclosure comprising at least an electron source and means for directing electrons to the display screen, said means comprising branched electron transport tubes Arrangement, the display device includes an arrangement of at least three plates, said plate includes an intermediate plate with a selection hole, and a selection electrode associated with the selection hole for applying a selection voltage, the selection hole, the selection electrode and the plate are arranged to allow electron flow On its way from the source to the electroluminescent screen it chooses to pass through holes in the middle plate and alternate flows on opposite sides of the middle plate. Background technique [0002] An example of such a display device is known from US Patent 5,781,166. In known display devices, the transfer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J31/12
CPCH01J31/124H01J31/12
Inventor R·P·范戈科姆S·T·德滋瓦特
Owner KONINK PHILIPS ELECTRONICS NV