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Plasma display panel

A display panel and plasma technology, applied to AC plasma display panels, gas discharge electrodes, solid cathode parts, etc., can solve problems such as inability to discharge, image quality degradation, time fluctuations, etc., and achieve suppression of sputtering resistance decline , to achieve the effect of addressing discharge delay

Inactive Publication Date: 2011-04-20
HITACHI CONSUMER ELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the time (address discharge delay) from application of voltage to generation of discharge fluctuates, discharge may not occur if the pulse width of the address voltage is too small.
At this time, there is a problem of image quality degradation due to the fact that the unit is not properly lit during display

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0059] use Figure 1 ~ Figure 3 A PDP according to Embodiment 1 of the present invention will be described. figure 1 is a main part front view schematically showing a part of the structure of the PDP unit, figure 2 is an exploded perspective view schematically showing a part of the structure of a PDP unit, image 3 yes figure 1 The sectional view of the main part at the line I-I'.

[0060] The structure of the PDP 1 is such that a front panel A and a back panel B are arranged to face each other with a discharge space D interposed therebetween, the front panel A is made of a front substrate 1A made of glass, etc. A plurality of discharge cells C are formed between these substrates.

[0061] In order to apply a voltage to the discharge cells C, on the back side of the front substrate 1A, along the second direction (the Y-axis direction in the figure), a plurality of sustaining cells are formed in parallel at a certain distance called a discharge gap G. The display electr...

Embodiment approach 2

[0080] In Embodiment 1 described above, it is characterized in that, on the entire rear surface side of the protective layer 3 in the area (second area) E1 except for the intersection area (first area) of the display electrode pair XY and the address electrode Z (first area) The electron emission layer E is formed. However, in the present second embodiment, a part of the rear surface side of the protective layer 3 in the area (second area) E1 other than the intersecting area (first area) of the display electrode pair XY and the address electrode Z is characterized in that An electron emission layer E is formed on it.

[0081] In accordance with Embodiment 2, corresponding to the first to sixth examples in which the electron emission layers are formed on different regions of the PDP, respectively, Figure 4 ~ Figure 9 , illustrate these examples. Figure 4 ~ Figure 9 It is a main part front view which schematically shows a part of structure of a PDP unit.

[0082] According ...

Embodiment approach 3

[0095] In Embodiments 1 and 2 described above, the transparent electrodes Xa and Ya constituting the PDP are formed in a strip shape. However, in the third embodiment, the transparent electrodes Xa and Ya constituting the PDP have a "T"-shaped protruding portion directly above the address electrode Z. As shown in FIG.

[0096] In accordance with Embodiment 3, corresponding to the first to seventh examples in which the electron emission layers are formed on different regions of the PDP, respectively, Figure 10 ~ Figure 16 , illustrate these examples. Figure 10 ~ Figure 16 It is a main part front view which schematically shows a part of structure of a PDP unit. The configuration of the PDP is the same as that of Embodiments 1 and 2 above, except that the transparent electrodes Xa and Ya are formed in a "T" shape.

[0097] According to the PDP of the first example of the third embodiment, as Figure 10 As shown, similarly to the PDP of Embodiment 1, it is in a region other t...

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Abstract

A protective layer has, on its back side, an electron emissive layer formed of magnesium oxide crystals. Based on a front view of discharge cells C, there are defined intersection regions (first regions) where display electrode pairs (each including a sustain electrode X and a scan electrode Y) and address electrodes Z intersect and a remaining region (a second region) E1 excluding the intersection regions. The surface density of the magnesium oxide crystals forming the electron emissive layer over the intersection regions (the first regions) is equal to or lower than half the surface density of the magnesium oxide crystals forming the electron emissive layer over the remaining region (the second region) E1 excluding the intersection regions.

Description

technical field [0001] The present invention relates to an effective technology applicable to a plasma display panel (hereinafter also referred to as a PDP) used in a display device such as a television. Background technique [0002] A plasma display panel (PDP) is a matrix type display device that uses vacuum ultraviolet rays generated by gas discharge to make phosphors emit light. Plasma TV (PDP-TV), a type of plasma display panel using AC surface discharge PDP, which is the best form for practical use, is consolidating its position in the large-screen thin TV market. Competition from other competing products has also intensified. [0003] As a general grayscale display method of an image in a PDP, there is an ADS (Address Display-Period Separation, Address Display-Period Separation) method. In the ADS method, a TV field (field, field) (1 / 60s) required to display a picture is divided into multiple sub-fields (sub-field) with a predetermined brightness ratio, so that thes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J17/49H01J17/04H01J17/16H01J11/12H01J11/22H01J11/24H01J11/26H01J11/34H01J11/40
CPCH01J2211/40H01J11/40H01J11/12
Inventor 玉腰武司池田光晴铃木敬三何希伦三上佳朗
Owner HITACHI CONSUMER ELECTRONICS CORP
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