US 7,679,588 B2 · Display device and method of driving the same

Abstract

The present invention relates to a display device for providing charges discharged from data lines to a battery. The display device includes data lines, scan lines, pixels, a charge storing circuit and a discharging circuit. The pixels are formed in cross areas of the data lines and the scan lines, and driven on the basis of a driving voltage. The charge storing circuit is coupled to at least one data line during a first sub-discharge time of a discharge time, and stores electric charges discharged from the data line during the first sub-discharge time. The discharging circuit is coupled to the data line during a second sub-discharge time of the discharge time, and discharges the data line up to a certain discharge voltage during the second sub-discharge time.

Drawings

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Drawings

Claims10

Dependent claims

A display device comprising:

data lines disposed in a first direction;
scan lines disposed in a second direction different from the first direction;
a plurality of pixels formed in cross areas of the data lines and the scan lines, and configured to drive on the basis of a driving voltage;
a charge storing circuit coupled to at least one data line during a first sub-discharge time of a discharge time, and configured to store charges discharged from the data line during the first sub-discharge time, wherein the discharge time includes at least two sub-discharge times;
a discharging circuit coupled to the data line during a second sub-discharge time of the discharge time, and configured to discharge the data line up to a certain discharge voltage during the second sub-discharge time;
a battery providing a battery voltage;
a voltage adjusting circuit configured to boost the battery voltage outputted from the battery and output the driving voltage, wherein charges stored in the charge storing circuit are provided to the battery during the second sub-discharge time;
a comparing circuit coupled to the battery and charge storing circuit, and configured to compare the battery voltage outputted from the battery with a charging voltage corresponding to charges stored in the charge storing circuit;
and
a switching circuit configured to switch the couple between the battery and the charge storing circuit in accordance with a comparison result of the comparing circuit,
wherein the switching circuit turns off the couple between the battery and the charge storing circuit when the battery voltage is higher than the charging voltage, and
the switching circuit turns on the couple between the battery and the charge storing circuit when the battery voltage is the same as, or less than the charging voltage.

9 more elements

Dependencies are inferred from the claim text.

Description4,280 words

Summary1,019 words

#This application claims priority from Korean Patent Application No. 2006-82360, filed on Aug. 29, 2006, the contents of which are incorporated herein by reference in its entirety.

#1. Field of the Invention

#The present invention relates to a display device and a method of driving the same. More particularly, the present invention relates to a display device for providing a charge discharged from data lines to a battery and a method of driving the same.

Brief description of the drawings8 figures

#The above and other features and advantages of the present invention will become readily apparent by reference to the following detailed description when considered in conjunction with the accompanying drawings wherein:

#FIG. 1 is a view illustrating a common display device;

#FIG. 2A and FIG. 2B are views illustrating the process of driving the display device of FIG. 1;

Detailed description3,098 words

#Hereinafter, the preferred embodiments of the present invention will be explained in more detail with reference to the accompanying drawings.

#FIG. 3 is a view illustrating a display device according to a first embodiment of the present invention.

#In FIG. 3, the display device of the present embodiment includes a panel 300, a controller 302, a first scan driving circuit 304, a second scan driving circuit 306, a discharging circuit 308, a precharging circuit 310, a data driving circuit 312, a battery 314, a voltage adjusting circuit 316 and a feedback circuit 318.

Facts

Application

11/637,777Filed 13 Dec 2006

Priority

KR 10-2006-008236029 Aug 2006

Published

US 2008/0122823 A129 May 2008

Granted

16 Mar 2010

Term ends

20 Nov 2028

Estimated · how

20 years from earliest known nonprovisional domestic filing plus recorded patent term adjustment, including 708 days of adjustment. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.

Classification6 codes

G09G 3/3216
Organic, e.g. using organic light-emitting diodes [OLED]: using a passive matrix
G09G 2310/0248
Details of the generation of driving signals: precharge or discharge of column electrodes before or after applying exact column voltages
G09G 2330/021
Details of power systems and of start or stop of display operation: power management, e.g. power saving
G09G 2330/023
Power management, e.g. power saving: using energy recovery or conservation

Timeline

29 Aug 2006Priority claimedKR 10-2006-0082360
13 Dec 2006Application filedUS 11/637,777
13 Dec 2006Assigned to LG Electronics Inc.assignment of assignor's interest
22 Apr 2008Assigned to LG Display Co., Ltd.assignment of assignor's interest
29 May 2008PublishedUS 2008/0122823 A1
16 Mar 2010GrantedUS 7,679,588 B2
12 Oct 2026TodayWithin its term
20 Nov 2028Term endsEstimated, includes 708 days of adjustment

Display device and method of driving the same

Life of this patent

Display device and method of driving the same

Life of this patent

Life of this patent

Abstract

Drawings

Drawings

Claims10

Description4,280 words

Classification6 codes

Life of this patent

Drawings

Description4,280 words