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

Display apparatus and method for driving the same

A display device and sub-field technology, applied in the direction of static indicators, pipe structure components, instruments, etc., can solve the problems of different transfer modes and cannot fully reduce power consumption, so as to achieve sufficient power consumption, reduced power consumption, Effect of Preventing Image Quality Deterioration

Inactive Publication Date: 2008-01-16
PANASONIC CORP
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0055] However, in the method described in the above-mentioned Patent Document 5, the power consumption of the data electrode driver is monitored in the display mode, so the reduction in power consumption can only be achieved in the case of a certain display mode.
For example, even if the number of pixels displayed on one screen is the same, power consumption reduction may or may not be achieved due to different display transition patterns.
That is, in the method of the above-mentioned patent document 5, since the display mode is different, the power consumption may not be sufficiently reduced.

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
  • Display apparatus and method for driving the same
  • Display apparatus and method for driving the same
  • Display apparatus and method for driving the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0106] (1) The overall composition of the plasma display device

[0107] FIG. 1 is a block diagram showing the composition of a plasma display device according to Embodiment 1 of the present invention.

[0108] The plasma display device shown in FIG. 1 includes: A / D converter (analog-to-digital converter) 1, video signal-subfield correlator 2, subfield processor 3, data driver 4, scan driver 5, sustain A driver 6 , a PDP (Plasma Display Panel) 7 subfield lighting rate measurer 8 , and a extinguishing signal generator 9 .

[0109] An analog video signal VD is input to the A / D converter 1 . The A / D converter 1 converts the video signal VD into digital image data, and outputs it to the video signal-subfield correlator 2 and the subfield lighting rate measuring device 8 .

[0110] The video signal-subfield correlator 2 compiles the image data SP of each subfield from the image data of one field, and outputs it to the subfield processor 3 and the subfield lighting rate measuring ...

Embodiment approach 2

[0169] The plasma display device of Embodiment 2 differs from the plasma display device of Embodiment 1 in the following points.

[0170] 8 is a block diagram showing the composition of the plasma display device according to Embodiment 2 of the present invention, and FIG. 9 is a block diagram showing the composition of the data driver 4 of FIG. 8 .

[0171] As shown in FIG. 8 , in this embodiment, the off signal generator 9 generates the off signal BLK and the forced output signal PC according to the subfield lighting rate SL and the subfield number SN, and outputs them to the data driver 4 .

[0172] These extinguishing signal BLK and forced output signal PC are input to the output control circuit 4 c of the data driver 4 as shown in FIG. 9 .

[0173] The output control circuit 4c outputs the drive control signals Q1-Qn as output control signals O1-On as they are or as output control signals O1-On fixed at low level according to the extinguishing signal BLK and the forced outpu...

Embodiment approach

[0184] In the above-described embodiment, each subfield is arranged so that the weighting amount increases sequentially on the time axis of light emission, but each subfield may also be arranged as follows.

[0185] Fig. 12 is a code table showing another example of gradation display in a plasma display device. In the coding table shown in FIG. 12, each subfield can be divided into a first subfield group including subfields SF1 to SF9 and a second subfield group including subfields SF10 to SF14.

[0186] In the first subfield group, the subfields SF1 to SF9 are arranged such that the weighting amount increases sequentially on the time axis. Similarly, also in the second subfield group, subfields SF10 to SF14 are arranged such that the weighting amount increases sequentially on the time axis. In the example shown in FIG. 12 , subsequent to the first subfield group, the subfields of the second subfield group sequentially enter the light emitting state.

[0187] In this way, wh...

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

A sub-field lighting rate measuring device is used to measure the lighting rate of a final sub-field. If the measured lighting rate exceeds a threshold value, a blank signal generator maintains a blank signal (BLK) at a low level during the address interval of the subsequent sub-field. An output control circuit provides, based on the blank signal (BLK), an output control signal (Oi) at a low level. In this case, no data pulse is applied to an address electrode, with the result that no power is consumed during the rising and falling of the data pulse.

Description

technical field [0001] The present invention relates to a display device that displays images by controlling discharge and a driving method thereof. Background technique [0002] A plasma display device using a PDP (Plasma Display Panel) has advantages of being thinner and larger. This plasma display device displays images by utilizing light emission during gas discharge. [0003] (A) AC type PDP discharge unit [0004] FIG. 13 is a diagram for explaining a method of driving a discharge cell in an AC-type PDP. As shown in FIG. 13, in the discharge cell of an AC-type PDP, the surfaces of counter electrodes 301 and 302 are covered with dielectric layers 303 and 304, respectively. [0005] As shown in FIG. 13( a ), when a voltage lower than the discharge initiation voltage is applied between the electrodes 301 and 302 , no discharge occurs. [0006] As shown in FIG. 13( b ), when a pulse-shaped voltage (writing pulse) higher than the discharge start voltage is applied betwe...

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): G09G3/28G09G3/20G09G3/291G09G3/293G09G3/296G09G3/298
CPCG09G2360/16G09G3/2037G09G2330/021G09G3/293G09G3/296G09G2320/0228G09G3/2932G09G2320/0261G09G3/204H01J11/20
Inventor 庄司秀彦吉滨丰桥口淳平谷口启成
Owner PANASONIC CORP