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Plasma display equipment and method of driving plasma display panel

A technology of plasma display and plasma display, applied in static indicators, instruments, etc., can solve the problems of discharge dispersion increase, discharge dispersion, charge loss, etc.

Inactive Publication Date: 2009-09-30
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The discharge dispersion during the write operation is one of the main causes of charge loss
For example, when the discharge dispersion during the write operation increases and a large write discharge occurs, the light-emitting discharge cells often take away the wall from the non-light-emitting discharge cells at the place where the light-emitting discharge cells and the non-light-emitting discharge cells are adjacent. charge, resulting in a loss of charge

Method used

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  • Plasma display equipment and method of driving plasma display panel
  • Plasma display equipment and method of driving plasma display panel
  • Plasma display equipment and method of driving plasma display panel

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

figure 1 It is an exploded perspective view showing the structure of the panel 10 in the first embodiment of the present invention. On front panel 21 made of glass, a plurality of display electrode pairs 24 including scan electrodes 22 and sustain electrodes 23 are formed. Furthermore, dielectric layer 25 is formed to cover scan electrode 22 and sustain electrode 23 , and protective layer 26 is formed on dielectric layer 25 .

[0024]

In addition, in order to lower the discharge start voltage in the discharge cell, MgO, which has a proven record of use as a material for the screen, has a large secondary electron release coefficient and excellent durability when neon (Ne) and xenon (Xe) gases are enclosed, is used as the main material. The composition of the material forms the protective layer 26 .

[0025]

A plurality of data electrodes 32 are formed on rear panel 31 , dielectric layer 33 is formed to cover data electrodes 32 , and derrick-shaped partition walls 34 are fu...

no. 2 Embodiment approach

The first embodiment is characterized in that initialization voltage Vi4 is switched between Vi4L, Vi4M, and Vi4H in each sub-field according to the total number of sustain pulses in the sustain period and the temperature of panel 10 . On the other hand, the second embodiment is characterized in that initializing voltage Vi4 is switched between Vi4L, Vi4M, and Vi4H only in accordance with the total number of sustain pulses in the sustain period of each subfield. Therefore, the same configuration and operation as those of the first embodiment will not be repeated.

[0151]

Figure 15 It is a figure which shows an example of the structure of the sub field in 2nd Embodiment of this invention. For example Figure 15As shown, regardless of the temperature of the screen, the total number of sustain pulses in the sub-scanning field just now is less than 20 sub-scanning fields (here, the 2nd SF~4th SF) and all unit initialization sub-scanning fields (here, the 1st SF ) during the ...

no. 3 Embodiment approach

The first embodiment is characterized in that initialization voltage Vi4 is switched between Vi4L, Vi4M, and Vi4H in each sub-field according to the total number of sustain pulses in the sustain period and the temperature of panel 10 . On the other hand, the third embodiment is characterized in that the initializing voltage Vi4 is switched between Vi4L, Vi4M, and Vi4H only according to the temperature of the panel 10 . Therefore, the same configuration and operation as those of the first embodiment will not be repeated.

[0153]

Figure 16A , Figure 16B , Figure 16C It is a figure which shows an example of the structure of the sub field in 3rd Embodiment of this invention. For example, when the panel temperature detection circuit 46 determines that the temperature of the panel 10 is high temperature (here, 55° or more), as Figure 16A As shown, in the initialization periods of all the subfields, the initialization voltage Vi4 is set to Vi4M to generate a falling ramp wa...

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Abstract

Plasma display equipment comprising a plasma display panel, a scan electrode driving circuit which generates a descending gradient waveform voltage which gently descends in an initialization period and also generates a first gradient waveform voltage which gently ascends in an initialization period of at least one sub-field (first SF) of one field, and a panel temperature detector circuit. In this plasma display equipment, the lowest voltage in the descending gradient waveform voltage is switched over to a first voltage (Vi4L), a second voltage (Vi4M) whose voltage value is higher than that of the fist voltage (Vi4L), or a third voltage (Vi4H) whose voltage value is higher than that of the second voltage (Vi4M) depending on the temperature detected by the panel temperature detector circuit.

Description

technical field [0001] The invention relates to a plasma display device used in a wall-mounted television and a large monitor and a driving method for the plasma display. Background technique [0002] As a plasma display panel (hereinafter referred to as "panel"), in a typical AC surface discharge type panel, many discharge cells are formed between the oppositely arranged front panel and rear panel. On the front panel, a plurality of display electrode pairs consisting of a pair of scan electrodes and a pair of sustain electrodes are formed parallel to each other on the front glass substrate. Furthermore, a dielectric layer and a protective layer are formed to cover the pair of display electrodes. On the rear panel, a plurality of parallel data electrodes, a dielectric layer covering them, and a plurality of partition walls parallel to the data electrodes are respectively formed on the rear glass substrate. Then, a phosphor layer is formed on the surface of the dielectr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/28G09G3/20G09G3/288G09G3/291G09G3/292G09G3/296G09G3/298
CPCG09G3/2927G09G3/2965G09G2320/066G09G2320/041G09G2310/066G09G2320/0238G09G2320/0228G09G3/296G09G3/291
Inventor 茨木广武田实赤松庆治小川兼司中村信彦
Owner PANASONIC CORP