Display driving circuit and method for controlling signal thereof

A technology for controlling signals and driving circuits, which is applied to static indicators, instruments, etc., and can solve problems such as current consumption and the increase in current consumed by driving circuits

Inactive Publication Date: 2008-10-01
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the level conversion units 370 and 380, the current is unnecessarily consumed at the time point A
[0024] Because of this, the display driver circuit performs unnecessary operations, so that the current consumed by the display driver circuit increases

Method used

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  • Display driving circuit and method for controlling signal thereof
  • Display driving circuit and method for controlling signal thereof
  • Display driving circuit and method for controlling signal thereof

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Embodiment Construction

[0044] Hereinafter, the present invention will be described in detail by explaining exemplary embodiments with reference to the attached drawings. Like numbers in the figures indicate like elements.

[0045] Figure 4 is a schematic diagram for explaining a display driving circuit according to an exemplary embodiment of the present invention. refer to Figure 4 , except for the structure of the data storage unit 250', the display driving circuit also called "display driver", "source driver" or "data line driver" according to an exemplary embodiment of the present invention basically has the same figure 2 The same structure as the source driver 100 shown in .

[0046] The data storage unit 250' includes: a selection unit 410 for selecting and outputting a corresponding image data signal from a plurality of image data signals DATA1, DATA2 to DATAm input in response to the first control signal CTRL1; and a level conversion unit 420 , for switching or shifting the level of th...

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Abstract

A display driving circuit capable of driving a display device with a selected polarity includes a plurality of selection units for selecting any one image data signal from a plurality of input image data signals in response to a first control signal, and a plurality of level converting units, each converting a level of the selected image data signal and outputting an output image data signal having the converted level in response to a second control signal. The second control signal has a level converted in a predetermined time from the point in time when a level of the first control signal is converted. The first control signal may be a polarity selection signal and the second control signal may be a vertical line start signal.

Description

[0001] Cross references to related patent applications [0002] This application claims priority under 35 U.S.C. §119 to Korean Patent Application No. 2007-0031018 filed March 29, 2007, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to a display driving circuit and a method for driving the display driving circuit, and more particularly, to a display driving circuit and a method for driving the display driving circuit capable of removing unnecessary current consumed in level conversion. Background technique [0004] One of representative display devices involving polarity is a liquid crystal display (LCD) device using liquid crystal. [0005] On the basis of the reference level, the polarity is classified into positive level and negative level. For example, assume that black has a voltage difference of ±5V from the reference level. If the reference voltage is 5V, the voltage of 10V and the voltage of...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G09G3/36G09G3/20G02F1/133
CPCG09G3/3688G09G3/3614G09G2310/027G09G2330/021G09G3/36G09G3/20
Inventor权宰郁
OwnerSAMSUNG ELECTRONICS CO LTD