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Plasma display device

A display device and plasma technology, applied in identification devices, static indicators, instruments, etc., can solve the problems of increased circuit cost, increased number of driving IC components, flow through current, etc., so as to reduce the number of components used and suppress heat generation. , the effect of reducing costs

Inactive Publication Date: 2008-11-12
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0028] However, in the solution described in the aforementioned Japanese Patent Application Laid-Open No. 2005-121718, since the scanning drivers are connected in parallel with the respective electrodes, the number of components of the driving IC increases.
For example, if two scan drivers are arranged in parallel with respect to the respective electrodes, there is a problem that the number of components is doubled and the circuit cost increases
[0029] In addition, in the scheme of Japanese Patent Application Laid-Open No. 2005-121718, the timing of the output from the parallel-connected scan drivers to the same electrode must be consistent. The switching transistor on the potential side and the switching transistor on the low potential side of the other driver IC are simultaneously turned on for a short period of time, but there is a possibility that a through current may flow. It is troublesome to perform subtle considerations such as making the length of the wiring equal to the mode of the state

Method used

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Experimental program
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Effect test

Embodiment approach 1

[0085] FIG. 6 is a basic configuration diagram of plasma display device 100 according to Embodiment 1 of the present invention.

[0086] In FIG. 6 , plasma display device 100 according to Embodiment 1 includes plasma display panel 10 , address driver 20 , drive circuit 50 , X sustain circuit 60 , and control circuit 70 . In FIG. 6 , display device 100 of Embodiment 1 differs from conventional plasma display device 100 of FIG. 1 in that Y scan driver 30 and Y sustain circuit 40 are removed, and drive circuit 50 is added. In addition, the other components are the same as those in FIG. 1 , and are given the same reference numerals, and their descriptions are omitted.

[0087] The drive circuit 50 is a circuit for driving electrodes constituting a display unit (not shown) provided on the plasma display panel 10 . The drive circuit 50 can drive the electrodes in two periods of the address period and the sustain period of the electrode drive sequence. Therefore, the drive circuit ...

Embodiment approach 2

[0112] Figure 9 It is a circuit configuration diagram of the drive circuit 50a applied to the plasma display device 100a of the second embodiment. In Embodiment 2, the overall structure of plasma display device 100 may be the same as that of Embodiment 1 shown in FIG. 6 . In addition, the same reference numerals are assigned to the same constituent elements as those described so far, and their descriptions are omitted.

[0113] exist Figure 9 Among them, plasma display device 100a of Embodiment 2 differs from plasma display device 100 of Embodiment 1 in the combination of transistors in scan driver A51a and scan driver B52a, and the circuit configuration of drive circuit 50a.

[0114] exist Figure 9 Among them, the scan driver A51a or the second group driver IC is composed of transistors CU and LD. In addition, the scan driver B52a or the first group driver IC is composed of transistors LU and CD.

[0115] That is, the scan driver A51a of the second embodiment and the ...

Embodiment approach 3

[0128] Figure 11 It is a circuit diagram of the driving circuit 50b and the plasma display panel 10 of the plasma display device 100b according to the third embodiment. Also in Embodiment 3, the overall structure of the plasma display device 100 may be the same as that of Embodiment 1 of FIG. 6 . In addition, the same reference numerals are used for the same constituent parts as those described so far, and their descriptions are omitted.

[0129] exist Figure 11 Among them, the drive circuit 50b applied to the plasma display device 100b of Embodiment 3 is composed of a diode array 53, a scan driver 52b, coils L2, L3, transistors LU, LD, capacitors C1, C2, and a sustain power supply Vs.

[0130] Figure 11 The drive circuit 50b of the plasma display device 100b of Embodiment 3 and Figure 7 The driving circuit 50 of the plasma display device 100 according to Embodiment 1 is different in that, instead of the scan driver A51, a diode array 53 capable of individual output is...

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PUM

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Abstract

A plasma display apparatus includes a plurality of electrodes and a driver circuit configured to drive the plurality of electrodes, wherein the driver circuit includes a plurality of driver ICs coupled in common to an electrode with respect to each of the plurality of electrodes, and the plurality of driver ICs supply electric currents to said electrode in a temporally staggered manner so as to drive each of the plurality of electrodes.

Description

technical field [0001] The present invention relates to a plasma display device for displaying images, and more particularly to a plasma display device having a drive circuit for driving a plurality of electrodes. Background technique [0002] In the prior art, there is known a plasma display device having address electrodes (adress electrodes), sustain (sustain) electrodes (hereinafter referred to as "X electrodes"), and scan electrodes (hereinafter referred to as "X electrodes") and scan electrodes (hereinafter referred to as "X electrodes"). Y electrode"), the electrodes are driven to discharge, and an image is displayed on the display by using light emission accompanying gas discharge (for example, refer to Japanese Patent Application Laid-Open No. 2005-121718). [0003] FIG. 1 is a diagram showing a basic structure of a 3-electrode surface discharge type plasma display device 200 used in the prior art. [0004] In FIG. 1, in the plasma display device 200, a plasma disp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/28G09F9/313G09G3/288G09G3/20G09G3/291G09G3/293G09G3/294G09G3/296G09G3/298
CPCG09G3/294G09G3/2965G09G3/293G09G2330/045G09G2300/0426G09G3/296
Inventor 椎崎贵史大贯英则百合诚志上中铁也栗山博仁岸智胜
Owner HITACHI LTD