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Circuit of drive display

A technology for driving circuits and displays, applied to circuits, static indicators, instruments, etc., can solve problems such as high power consumption and meaningless comparison

Inactive Publication Date: 2003-12-24
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, the main reason why LCDs, which have more unfavorable characteristics than current-driven type displays having the above-mentioned advantages, are used in portable information devices and the like are more than current-driven type displays because organic E1 has greater power consumption than LCDs.
[0014] Because the large power consumption of portable terminal devices poses a big problem as the use of portable information terminals increases, this problem is a factor limiting the use of current drive type displays
[0015] However, in general, although the power of the current drive type display is several times that of the LCD, this simple comparison does not make any sense

Method used

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Examples

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Embodiment Construction

[0058] Reference will now be made in detail to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings. figure 2 A power saving circuit for a current drive type display according to a first preferred embodiment of the present invention is shown.

[0059] refer to figure 2 , the driving circuit of the display includes: a power supply, which is used to provide a power supply voltage to each element, a data driving part composed of N PMOSs, and each PMOS controls the transmission from the power supply to the light emitting device part 60 in response to the applied data signal. The current of the anode; one includes a data receiving part (sink) for eliminating the data driver 50a composed of N NMOSs of the charge collected on the anode, a scan driver 70b composed of M NMOSs, the scan driver of each NMOS Conducting a cathode current from the light emitting device portion in response to an applied scan signal, and a transformer p...

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PUM

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Abstract

The present invention relates to a display, and more particularly, to circuit for driving a display of a low power consumption. For the purpose, the circuit includes a light emitting display of current driven type having a plurality of column electrode lines arranged in a column direction, a plurality of row electrode lines arranged perpendicular to the column electrode lines, and a matrix of pixels at crossing points of the column electrode lines and the row electrode lines, a power source part, a column driving circuit connected to the column electrode lines formed in the column direction for supplying / discharging a current to / from the column electrode lines, for driving the light emitting display of current driven type, and an electric transformer for, when the current supplied to the column electrode lines is discharged, recovering the current discharged from the column electrode lines and re-supplying a recovered current to the power source part.

Description

[0001] This application claims to have the application number P2001-28006 filed on May 22, 2001, the application number P2001-40453 filed on July 6, 2001, and the application number P2001- 40454, which are incorporated herein by reference. technical field [0002] The present invention relates to a display, and in particular to a circuit for driving a low power consumption display. Background technique [0003] Recently, beyond the widely used CRT (cathode ray tube), especially from the leading LCD (liquid crystal display), flat-panel displays have emerged in PDP (plasma display panel), VFD (vacuum fluorescent display), FED (field Emissive Displays), LED (Light Emitting Diode), EL (Electroluminescence) and similar fields are rapidly developing. [0004] Since the aforementioned current-driven type displays not only have good visual and color perception, but also have a simple manufacturing process, the displays have a wide range o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/30G09G3/20G09G3/30G09G3/32H01L27/32H01L51/50
CPCG09G2320/043G09G2330/024G09G2310/0262G09G2300/0809G09G3/3233G09G2330/04G09G2310/0256
Inventor 金学洙李玟镐曹瑛完金承泰
Owner LG DISPLAY CO LTD