IP Library Granted Patent US 8,988,401
Granted Patent B2
US 8,988,401 · App. 13/252,010 · Granted Mar 24, 2015

Display device and method of driving the same

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Quick Facts
Patent No.
US 8,988,401
App. No.
13/252,010
Granted
Mar 24, 2015
Kind
B2
Abstract

A display device is disclosed. According to some aspects, the display device includes a display panel for displaying an image, data drivers for supplying data signals to the display panel such that the display panel displays an image, and a timing controller for setting the data drivers and 3n (where n is a natural number) ports. The display device is configured to transmit an R transmission signal including R data bits, a G transmission signal including G data bits, and a B transmission signal including B data bits to the data drivers through the 3n ports. According to some aspects, a display device capable of securing a band width required for driving a three dimensional image without unnecessarily increasing ports and without increasing the transmission speed of the ports and a method of driving the same are disclosed.

Claims (27)

1. A display device, comprising:

a display panel configured to display an image;

a plurality of data drivers configured to supply data signals to the display panel; and

a timing controller comprising:

a receiving unit configured to receive the R, G, and B data and an external dot clock signal;

a transmitting unit, the transmitting unit comprising a distributing unit and a plurality of serializing units, wherein the distributing unit is configured to:

receive a clock signal and the external dot clock signal,

divide the image data according to an R signal, a G signal, and a B signal using the external dot clock signal, and

transmit the R, G, and B signals to the plurality of serializing units according to the dot clock signal; and

wherein the plurality of serializing units are configured to serialize the R, G, and B signals into an R transmission signal, a G transmission signal, and a B transmission signal, and to embed dummy bits and clock signals into the R, G, and B transmission signals;

wherein the number of data bits transmitted during one period of the dot clock signal is based on the number of gray levels for at least one of the R, G, and B signals; and

wherein the timing controller is configured to set the data drivers and 3n ports, where n is an integer, and is configured to transmit an R transmission signal including R data bits, a G transmission signal including G data bits, and a B transmission signal including B data bits from each of the plurality of serializing units to the data drivers through the 3n ports.

2. The display device of claim 1 , wherein the R, G, and B transmission signals are transmitted through a differential signal transmission method.

3. The display device of claim 1 , wherein the display panel is one of a liquid crystal display panel, a plasma display panel, and an organic light emitting diode display panel.

4. The display device of claim 3 , wherein the display panel is an OLED display panel.

5. The device of claim 1 , wherein the dummy bits and clock signals are transmitted through the 3n ports after each 10 bits of the R data bits, the G data bits, and the B data bits.

6. A method of driving a display device, comprising:

receiving, in a timing controller, a clock signal, an external dot clock signal, and image data;

dividing, by a transmitting unit, the image data according to an R signal, a G signal, and a B signal using the external dot clock signal,

transmitting the R signal, G signal, and B signal to a serializing unit according to the external dot clock signal,

embedding, in the serializing unit, dummy bits and clock signals in an R transmission signal, a G transmission signal, and a B transmission signal

wherein the number of data bits transmitted during one period of the dot clock signal is based on the number of gray levels for at least one of the R, G, and B signals;

setting 3n ports between the timing controller and a data driver, where n is an integer; and

transmitting the R transmission signal including R data bits, the G transmission signal including G data bits, and the B transmission signal including B data bits from the serializing unit to the data driver through the 3n ports.

7. The method of claim 6 , wherein the R, G, and B transmission signals are transmitted in a differential signal transmission method.

8. The method of claim 6 , wherein the display device is an OLED.

9. The method of claim 6 , further comprising transmitting a dummy bit and a clock signal through the 3n ports after each 10 bits of the R data bits, the G data bits, and the B data bits.

Assignments (2)
MERGER Recorded Aug 31, 2012
From: SAMSUNG MOBILE DISPLAY CO., LTD.
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 028921/0334 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 9, 2011
From: HWANG, MOON-SANG; CHOE, WON-JUN; KIM, SANG-SOO
To: SAMSUNG MOBILE DISPLAY CO., LTD.
Reel/Frame 027250/0398 →