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Apparatus for driving display panel with effective dc-dc converters

A display and driver technology, applied in current supply devices, instruments, static indicators, etc., can solve problems such as user inconvenience and increased power consumption, and achieve the effects of increasing convenience, maximizing efficiency, and reducing charging frequency

Active Publication Date: 2004-11-03
SAMSUNG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This causes a problem that the power consumption in the icon driver 21 increases unnecessarily.
In a device such as a cellular phone, etc., in which the icon area 31 is always displayed, such a problem will be more serious, and cause inconvenience to the user due to frequent charging of the battery

Method used

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  • Apparatus for driving display panel with effective dc-dc converters
  • Apparatus for driving display panel with effective dc-dc converters

Examples

Experimental program
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Effect test

Embodiment Construction

[0016] figure 2 A device for driving a display screen according to an embodiment of the present invention is shown.

[0017] refer to figure 2 , a display screen 3 driven by the device according to the invention, such as an electroluminescence (EL) display screen used in a cellular phone, includes an icon area 31 and a dot matrix area 32 . The icon area 31 has irregularly shaped display units for displaying icons with predetermined shapes, while the dot matrix area 32 has uniformly shaped display units for displaying changing images.

[0018] According to one embodiment of the present invention, the device for driving such a display screen 3 includes a display controller 1, an icon driver 21, a dot matrix driver 22, a first direct current-direct current (DC-DC) converter 41, and a second direct current (DC-DC) converter 41. Two DC-DC converters 42 . The display controller 1 includes a main display controller 11 , an icon display controller 12 , a dot matrix display controll...

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PUM

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Abstract

An apparatus for driving a display panel is provided. The display panel driving apparatus includes a main display controller, an icon display controller, a dot-matrix display controller, an icon driver, a dot-matrix driver, a first DC-DC converter, and a second DC-DC converter. The first DC-DC converter boosts an input DC voltage using a coil and supplies the boosted voltage as a first boost voltage to the dot-matrix driver. The second DC-DC converter boosts an input DC voltage using a capacitor and supplies the boosted voltage as a second boost voltage to the icon driver.

Description

technical field [0001] The present invention relates to a device for driving a display screen, such as an electroluminescent display screen, and more particularly, the present invention relates to a device for driving a display screen comprising an icon area and a dot matrix area, Icons predetermined according to the input icon data are displayed on the icon area, and variable images are displayed on the dot matrix area according to the input dot matrix data. Background technique [0002] This application claims priority to Korean Patent Application No. 2003-27989 filed on May 1, 2003 with the Korean Intellectual Property Office. The disclosure of this application is incorporated herein by reference in its entirety. [0003] Referring to FIG. 1 , a conventional display screen 3 , such as an electroluminescence (EL) display screen for a portable cellular phone, includes an icon area 31 and a dot matrix area 32 . The icon area 31 has irregular-shaped display units for displa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/22G09G3/00G09G3/20G09G3/30H04M1/73
CPCG09G3/30G09G2330/021G09G3/22
Inventor 牛草义祐
Owner SAMSUNG DISPLAY CO LTD