Computer graphics processing and selective visual display system – Display driving control circuitry
Reexamination Certificate
2002-01-28
2004-06-22
Hjerpe, Richard (Department: 2674)
Computer graphics processing and selective visual display system
Display driving control circuitry
Reexamination Certificate
active
06753855
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of Invention
The invention relates to a driver circuit and, in particular, to a driver circuit for LCDM's (liquid crystal display module).
2. Related Art
With the advance and popularity of the electronic technology, peripheral devices of information processing apparatus also make continuous progress along with the stronger functions provided by the information processing apparatus. Taking display devices as an example, the conventional display device uses a filament to heat up a cathode to emit electrons. Through acceleration and convergence, the electrons form a beam and hit a fluorescent screen, producing light spots or electrical signals. This is the CRT (cathode ray tube) monitor. Nowadays, a popular display device is the LCDM (liquid crystal display module), which uses rod-shaped crystal molecules that change directions through the action of currents to display information.
Commonly seen LCDM can be classified into TN—LCD (twisted nematic—LCD), STN—LCD (super TN—LCD), DSTN—LCD (double layer STN—LCD), and TFT—LCD (thin film transistor—LCD). However, when the LCDM is working, it often needs to drive a plurality of inverters within the same work period to maintain the functioning of several sets of CCFL's (cold cathode fluorescent lamp). However, the power consumed by the LCDM is also multiply increased.
It is thus highly desirable to be able to simultaneously drive a plurality of sets of inverters to maintain the proper functioning of several sets of CCFL's while lowering the power consumption at the same time.
SUMMARY OF THE INVENTION
In view of the foregoing, the invention provides a driver circuit of the LCDM. An objective of the invention is to lower the power consumption of the LCDM during work. The driver circuit of the LCDM includes a driving unit and a transformer unit. When the LCDM needs to drive a plurality of sets of inverters, the driving unit sends out a driving voltage in an asynchronous way to drive the transformer unit. The transformer unit then amplifies the driving voltage and sends it to the lamps. The invention thus achieves the goal of driving the LCDM using different timings within a work period.
Further scope of the applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
REFERENCES:
patent: 6016052 (2000-01-01), Vaughn
patent: 6225751 (2001-05-01), Komatsu
patent: 6307765 (2001-10-01), Choi
patent: 6469922 (2002-10-01), Choi
patent: 6566821 (2003-05-01), Nakatsuka et al.
patent: 6639366 (2003-10-01), Bai
patent: 2003/0058670 (2003-03-01), Choi
patent: 2003/0179168 (2003-09-01), Rosenberg et al.
Birch & Stewart Kolasch & Birch, LLP
Hjerpe Richard
Inventec C'orporation
Laneau Ronald
LandOfFree
Driver circuit for LCDM does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Driver circuit for LCDM, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Driver circuit for LCDM will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3332084