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Method for improving contrast of AC plasma display

A plasma and display technology, applied in the direction of static indicators, instruments, identification devices, etc.

Inactive Publication Date: 2008-04-02
四川世纪双虹显示器件份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To further increase the contrast of PDP significantly, there is no better method at present.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] Each frame of data of all display units can be divided into two groups of 0 and non-zero according to whether the specific gray value is 0 or not; secondly, for non-zero data, since any data greater than 1 can be expressed as 1 plus another A non-zero data The data may be 1 or other numbers, so it can be divided into a subfield with a weight value of 1 and a combination of subfields displayed by several other subfields, and the data equal to 1 only uses the subfield with a weight value of 1 Subfield display, so to display any non-zero data, a subfield with a weight value of 1 is used. What needs to be emphasized here is the processing of data 2: According to the previous description, "2" can only be expressed as a combination of two subfields with a weight value of 1, so two subfields with a weight value of 1 must be arranged in the display period. Field, that is, adding a subfield with a weight value of 1. The improved subfield mode adds a subfield with a weight value...

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Abstract

The invention discloses a method for improving contrast of alternative plasma display which comprises steps of: separating each frame data of all display units into 0 and non 0 two groups by judging whether its gray grade is 0; subfield mode adding a subfield with weight value equaling to 1 on the original subfield mode of the plasma display, and any non 0 data being displayed in the subfield; taking the added subfield as the last subfield if each frame, when the frame data isn't 0, providing initialization to next frame to ensure data being able to written in normally, employing 6 frames with one full screen writing pulse.

Description

technical field [0001] The invention relates to a driving method of an AC plasma display, in particular to a method for improving the contrast of the AC plasma display. technical background [0002] Contrast is an important performance index of plasma displays. Dark field brightness is an important factor affecting the contrast ratio of PDP. The higher the dark field brightness is, the lower the contrast ratio of the plasma display will be. Therefore, reducing the brightness of the dark field is the key to improving the contrast ratio of plasma display PDP. [0003] The dark field brightness is caused by the full-screen write pulse in the initialization phase of the plasma display PDP driver. Initialization is an essential stage in the driving process of AC PDP. In the initialization stage, full-screen writing is performed first, and then erasing is performed. The purpose of full-screen writing is twofold: 1) to establish a high initial ion concentration for the discharge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/288G09G3/28G09G3/20H01J17/49G09F9/313G09G3/292
Inventor 尤剑明
Owner 四川世纪双虹显示器件份有限公司