Unlock instant, AI-driven research and patent intelligence for your innovation.

Plasma display device and drive method for a plasma display panel

A technology for display panels and driving methods, applied to static indicators, parts of color TVs, parts of TV systems, etc., capable of solving problems such as unstable write discharge and reduced wall charge

Inactive Publication Date: 2012-05-23
PANASONIC CORP
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that in the discharge cell that performs the address operation last in the address period, the wall charge decreases more than in the discharge cell that performs the address operation first in the address period, and an address discharge is likely to occur. unstable

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Plasma display device and drive method for a plasma display panel
  • Plasma display device and drive method for a plasma display panel
  • Plasma display device and drive method for a plasma display panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0038] figure 1 It is an exploded perspective view showing the structure of the panel 10 in Embodiment 1 of this invention. A plurality of display electrode pairs 24 composed of scan electrodes 22 and sustain electrodes 23 are formed on front panel 21 made of glass. Then, dielectric layer 25 is formed to cover scan electrode 22 and sustain electrode 23 , and protective layer 26 is formed on dielectric layer 25 .

[0039] In addition, in order to reduce the discharge start voltage in the discharge cell, the protective layer 26 is used as the material of the panel, which has a practical effect, and the secondary electron emission coefficient is large and the secondary electron emission coefficient is large in the case of enclosing neon (Ne) and xenon (Xe) gases. It is made of a material mainly composed of MgO which is excellent in durability.

[0040] A plurality of data electrodes 32 are formed on rear plate 31 , and dielectric layer 33 is formed to cover data electrodes 32 ,...

Embodiment approach 2

[0133] The luminance in each subfield can be represented by the following equation. In addition, hereinafter, the brightness obtained by one discharge is referred to as "emission brightness", and the brightness obtained by repeated discharge is referred to as "brightness".

[0134] (luminance of subfield)=(luminance due to sustain discharge occurring in the sustain period of the subfield)+(luminescence luminance due to address discharge occurred in the address period of the subfield)

[0135] The discharge intensity of the address discharge changes in accordance with the order of the address operations. This is because the longer the elapsed time from the initializing operation to the writing operation, the smaller the wall charges. Therefore, since the discharge cell whose address operation sequence is early has a small amount of decrease in wall charges, the discharge intensity of the address discharge is relatively strong, and the luminance of light emitted by the address ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

In order to keep down the scan pulse voltage (amplitude) necessary for producing stable write discharges, to produce stable write discharges, and to obtain high image display quality, an image display region on a plasma display panel is divided into a plurality of regions, and in each region a partial illumination ratio is detected per subfield, said partial illumination ratio being the ratio of the number of discharge cells to be illuminated to the total number of discharge cells in the region. The region that has the highest partial illumination ratio is detected and identified as a first region, and a region adjacent to the first region is identified as a second region. A corrected partial illumination ratio is calculated by adding a prescribed offset to the partial illumination ratio of the second region. The partial illumination ratio and the corrected partial illumination ratio are compared to determine which is larger, and the order in which to perform write operations in the various regions is decided on the basis of the results of the comparison.

Description

technical field [0001] The present invention relates to a driving method of a plasma display panel used in a wall-mounted television or a large monitor and a plasma display device. Background technique [0002] As an AC surface discharge type panel typified by a plasma display panel (hereinafter referred to simply as a "panel"), a plurality of discharge cells are formed between a front panel and a rear panel that are arranged to face each other. In the front panel, a plurality of pairs of display electrodes consisting of a pair of scan electrodes and a pair of sustain electrodes are formed parallel to each other on the front glass substrate. Then, in order to cover these display electrode pairs, a dielectric layer and a protective layer are formed. In the rear plate, a plurality of parallel data electrodes are formed on a rear glass substrate, a dielectric layer is formed to cover these data electrodes, and a plurality of barrier ribs are formed on the dielectric layer in p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/28G09G3/20H04N5/66G09G3/288G09G3/291G09G3/293G09G3/294G09G3/296G09G3/298
CPCG09G3/294G09G2360/16H04N5/70G09G3/293G09G2320/0686G09G3/296
Inventor 折口贵彦庄司秀彦富冈直之
Owner PANASONIC CORP