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Method and apparatus for driving plasma display panel

A plasma and display panel technology, applied in static indicators, components of color TVs, components of TV systems, etc., can solve the problems of reduced luminous efficiency and increased power loss, etc.

Inactive Publication Date: 2004-01-21
HITACHI CONSUMER ELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the brightness is increased, power loss increases and luminous efficiency decreases

Method used

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  • Method and apparatus for driving plasma display panel
  • Method and apparatus for driving plasma display panel
  • Method and apparatus for driving plasma display panel

Examples

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no. 1 example

[0047] Figure 7 A first example of the holding circuit structure is shown. The sustain circuit 83 includes: a normal pulse generating circuit 91 having a role of outputting a rectangular pulse having an amplitude Vs; and a bias section 93 outputting a rectangular pulse having an amplitude Vo to generate the above-described step-shaped sustain pulse Ps.

[0048] The conventional pulse generating circuit 91 is a switching circuit having a push-pull structure including a pair of switching elements Q1 and Q2, which connects the display electrode X to the power supply terminal of the potential Vs or GND. The potential Vs refers to a potential having a potential difference Vs with respect to the GND potential. Switching elements Q1 and Q2 in this example are field effect transistors, and their gates are provided by gate drivers from figure 2 The control signals CU and CD of the controller 71 are shown in .

[0049] The bias part 93 includes: an auxiliary pulse generating circui...

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PUM

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Abstract

A method and a device for driving a plasma display panel is provided in which luminance and light emission efficiency in display discharge is improved, and a variation of the luminance and the light emission efficiency due to a variation of a display load is reduced. The driving step of one pulse for generating display discharge one time includes the steps of generating display discharge by applying an offset drive voltage (Vso) that is higher than the sustain voltage (Vs) to the display electrode pair, and applying the sustain voltage (Vs) for a constant period after dropping the applied voltage from the offset drive voltage (Vso) to the sustain voltage (Vs) 'after generating the display discharge. The drive output state is set to the low impedance state at least during the period (T1) from the application start of the offset drive voltage until the applied voltage drops to the sustain voltage.

Description

technical field [0001] The present invention relates to a method and apparatus for driving a plasma display panel (PDP). Background technique [0002] An object of the present invention is to provide a display device using a PDP to realize a brighter display with low electric power, ie, to improve luminous efficiency. It is preferable to design a driving pulse waveform to improve luminous efficiency rather than to change the panel structure including the characteristics of the fluorescent material and the composition of the discharge gas. [0003] In a display using an AC type PDP, an addressing process is performed to control the wall charge amount of each cell of the screen in a binary manner according to display data, and then a sustaining process in which a sustaining pulse is applied to all cells at once is performed. During this addressing, it is determined whether the cell is lit. During this hold, the amount of light emission is determined. [0004] In a conventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/66G09G3/20G09G3/288G09G3/291G09G3/294G09G3/296G09G3/298
CPCG09G2360/16G09G2330/021G09G3/296G09G2310/066G09G2330/02G09G3/2942
Inventor 粟本健司岩佐诚一
Owner HITACHI CONSUMER ELECTRONICS CORP