scispace - formally typeset
Patent

Apparatus and method for driving liquid crystal display device

Reads0
Chats0
TLDR
In this paper, an apparatus and method for driving an LCD device to obtain rapid response speed and to enhance picture quality is described, in which the apparatus includes a liquid crystal panel that includes liquid crystal cells formed in areas defined by gate and data lines.
Abstract
An apparatus and method for driving an LCD device is disclosed to obtain rapid response speed and to enhance picture quality, in which the apparatus includes a liquid crystal panel that includes liquid crystal cells formed in areas defined by gate and data lines; a gate driver that supplies a scan pulse to the gate lines; a timing controller that modulates source data supplied from the external to modulated data for a rapid response speed of liquid crystal cell, and generates discrimination signals by comparing source data of a current frame with uppermost and lowermost gray scales of source data based on whether source data of a current frame is the same as source data of a previous frame or not; and a data driver that converts the modulated data into a video signal by using a plurality of gamma voltages including a first modulation voltage that is higher than an maximum gamma voltage or a second modulation voltage that is lower than a minimum gamma voltage, and supplies the video signal to the data lines.

read more

Citations
More filters
Patent

Apparatus and method for driving liquid crystal display device

TL;DR: In this paper, an apparatus and method for driving a liquid crystal display device is described. But the method is restricted to the odd-column pixels rather than to the even-column ones.
Patent

Liquid crystal display device and driving method thereof

TL;DR: In this article, a hold-type display device without motion blur and a driving method for displaying a blanking image in one frame period is presented. But the holding-type device is not suitable for display-based applications.
Patent

Active matrix display device

TL;DR: In this article, a static random access memory (SRAM) and digital to analog converters (DAC) are allocated to each of sub-pixels of a divided pixel.
Patent

Image processing device and image display system

TL;DR: In this paper, an image processing device and an image display system achieving image quality improvement in moving picture by suppressing a motion blur in a hold-type display device, while maintaining low cost.
Patent

Organic light emitting display device and method of driving the same

TL;DR: In this article, an organic light-emitting display with a pixel cell formed in a region defined by gate lines and data lines perpendicularly crossing each other is presented. But the pixel cell is not connected to the power supply.
References
More filters
Patent

Pixel and organic light emitting display using the same

TL;DR: In this paper, a pixel circuit including a first transistor supplying a current to the LED corresponding to data signal applied to a data line, a capacitor coupled to the first transistor and charged by the data signal, a second transistor coupled to a scan line and the data line supplying the data signals to the capacitor when a scan signal is being supplied, and a third transistor coupled between the first transistors and the LED and having a gate coupling to a gate of the transistors.
Patent

DC-to-DC converter

TL;DR: In this paper, a DC-to-DC converter consisting of an input inductor which is connected to an input terminal, an output inductor connecting to an output terminal, a capacitor connected in series with and between the inductors, and a switch element being responsive to a switch control signal (Vsw) applied thereto for alternately making the switch element conducting and non-conducting such that currents flowing through the inductor flow through the switch elements or through the diode during an on-interval and an offinterval of the switch control signals, respectively, a
Patent

Liquid crystal panel drive device

TL;DR: In this paper, a lookup table is configured so as to have a hysteretic characteristic when the tables are switched from one to another according to the temperature information, so that the lookup tables can be used according to temperature information.
Patent

Controller driver and display apparatus

TL;DR: In this paper, a driving apparatus for over-drive driving includes a display memory, a memory control circuit performing control for receiving input image data supplied from an image rendering device, reading out image data one frame before of the input image from the display memory and for writing the image data in display memory as write image data for display memory.
Patent

Voltage generating circuit with two resistor ladders

TL;DR: In this paper, a voltage generating circuit that drives multiple output terminals in alternating positive and negative cycles has two resistor ladders, one resistor ladder generating voltages for the positive cycles, the other resistor ladder producing voltage for the negative cycles, and a switching circuit connects each output terminal to a selectable one of the amplifiers.