Liquid crystal display and driving method thereof

• US 7,193,623 B2
• Filed: 08/14/2002
• Issued: 03/20/2007
• Est. Priority Date: 08/29/2001
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Moon, Seung-Hwan
• Primary Examiner(s): Lefkowitz; Sumati
• Assistant Examiner(s): Kumar; Srilakshmi K
• Application Number:
  US10/218,294
• Publication Number:
  US 20030043100A1
• Time in Patent Office: 1,679 Days
• Field of Search: 345 87-107, 345204-215, 349/149, 349/150, 438/151
• US Class Current: 345/205
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence

Abstract

A liquid crystal display (LCD) is provided. A display region formed on an array panel has a plurality of gate lines and a plurality of data lines arranged in rows and columns, respectively. A data driving unit has a plurality of first data driving integrated circuits (ICs) and a plurality of second data driving ICs located proximal to the first data driving ICs, the plurality of first data driving ICs providing first data signals to a corresponding plurality of first data lines and the plurality of second data driving ICs providing second data signals to a corresponding plurality of second data lines. A gate driving unit has a plurality of gate driving ICs for providing scanning signals to the plurality of gate lines. A signal transmission film has a first signal transmission film and a second transmission film, the first transmission film transmitting the scanning signals to the gate driving unit and the first data signals to the plurality of first data driving ICs, and the second transmission film transmitting the second data signals to the plurality of second data driving ICs.

Claims

1. A liquid crystal display (LCD) comprising:

a display region formed on an array panel having a plurality of gate lines and a plurality of data lines arranged in rows and columns, respectively;

a data driving unit having a plurality of first data driving integrated circuits (ICs) and a plurality of second data driving ICs located proximal to the first data driving ICs, the plurality of first data driving ICs providing first data signals to a corresponding plurality of first data lines and the plurality of second data driving ICs providing second data signals to a corresponding plurality of second data lines;

a gate driving unit having a plurality of gate driving ICs for providing scanning signals to the plurality of gate lines; and

a signal transmission film having a first signal transmission film and a second transmission film, the first transmission film transmitting the scanning signals to the gate driving unit and the first data signals to the plurality of first data driving ICs, and the second transmission film transmitting the second data signals to the plurality of second data driving ICs, wherein the first data signals are serially shifted into the plurality of first data driving ICs and the second data signals are serially shifted into the plurality of second data driving ICs.

2. The LCD in accordance with claim 1, wherein each of the plurality of first data driving ICs and the plurality of second driving ICs includes a shift direction selecting terminal, the shift direction selecting terminal is connected to a first voltage for shifting the first data signals in reverse order and connected to a second voltage for shifting the second data signals in forward order.

3. The LCD in accordance with claim 1, wherein the first and the second data signals are low voltage differential signals (LVDS) or reduced swing differential signals (RSDS).

4. The LCD in accordance with claim 1, further including a printed circuit board (PCB) having a timing controller, wherein the PCB is connected to the signal transmission film and the timing controller transmits the first data signals and the second data signals to the signal transmission film.

5. The LCD in accordance with claim 1, wherein the data driving unit is disposed at one edge of the array panel and the gate driving unit is disposed at the other edge of the array panel.

6. A liquid crystal display (LCD) comprising:

a display region formed on an array panel having a plurality of gate lines and a plurality of data lines arranged in rows and columns, respectively;

a data driving unit having a plurality of first data driving integrated circuits (ICs) and a plurality of second data driving ICs located proximal to the first data driving ICs, the plurality of first data driving ICs providing first data signals to a corresponding plurality of first data lines and the plurality of second data driving ICs providing second data signals to a corresponding plurality of second data lines;

a gate driving unit having a plurality of gate driving ICs for providing scanning signals to the plurality of gate lines;

a signal transmission film having a first signal transmission film and a second transmission film, the first transmission film transmitting the scanning signals to the gate driving unit and the first data signals to the plurality of first data driving ICs, and the second transmission film transmitting the second data signals to the plurality of second data driving ICs;

wherein the first data signals are inputted to a first data driving IC and shifted to a kth data driving IC, and the second data signals are inputted to a nth data driving IC and shifted to a (k+1)th data driving IC, wherein n is the total number of the data driving ICs, k is the number of the Plurality of first data driving ICs, (n−

k) is the number of the plurality of second data driving ICs, and k is 1<

k<

n−

1.

7. The LCD in accordance with claim 6, wherein the first data signals inputted to the first data driving IC are provided in reverse order from the shifting of second data signals inputted to the second data driving ICs.

8. A liquid crystal display comprising:

a display region formed on an array panel having a plurality of gate lines and a plurality of data lines arranged in rows and columns, respectively;

a data driving unit having a plurality of first data driving ICs and a plurality of second data driving ICs located proximal to the first data driving ICs, the plurality of first data driving ICs providing first data signals to a corresponding plurality of first data lines and the plurality of second data driving ICs providing second data signals to corresponding plurality of second data lines;

a gate driving unit having a plurality of gate driving ICs for providing scanning signals to the plurality of gate lines; and

a signal transmission film having a first signal transmission film for transmitting the first data signals to the plurality of first data driving ICs and having a second signal transmission film for transmitting the second data signals to the plurality of second data driving ICs, wherein the first data signals inputted to the first data driving ICs are provided in a forward order and the second data signals inputted to the second data driving ICs are provided in a reverse order.

9. The LCD in accordance with claim 8, wherein each of the plurality of first data driving ICs and the plurality of second driving ICs includes a shift direction selecting terminal, the shift direction selecting terminal is connected to a first voltage for shifting the first data signals in the forward order and the shift direction selecting terminal of the plurality of second data driving ICs is connected to a second voltage for shifting the second data signals in the reverse order.

10. The LCD in accordance with claim 8, wherein the first data signals are serially shifted into the first data driving ICs and the second data signals are serially shifted into the plurality of second data driving ICs.

11. The LCD in accordance with claim 8, wherein the first and the second data signals are low voltage differential signals (LVDS) or reduced swing differential signals (RSDS).

12. A liquid crystal display comprising:

a display region formed on an array panel having a plurality of gate lines and a plurality of data lines arranged in rows and columns, respectively;

a data driving unit having a plurality of first data driving ICs and a plurality of second data driving ICs located proximal to the first data driving ICs, the plurality of first data driving ICs providing first data signals to a corresponding plurality of first data lines and the plurality of second data driving ICs providing second data signals to corresponding plurality of second data lines;

a gate driving unit having a plurality of gate driving ICs for providing scanning signals to the plurality of gate lines;

a signal transmission film for transmitting the first data signals to the plurality of first data driving ICs and the second data signals to the plurality of second data driving ICs; and

wherein the first data signals are inputted to a kth data driving IC and shifted to a first data driving IC, and the second data signals are inputted to a (k)th data driving IC and shifted to a nth data driving IC, wherein n is the total number of the data driving ICs, k is the number of the plurality of first data driving ICs, (n−

k) is the number of the plurality of second data driving ICs, and k is 1<

k<

n−

1.

13. A liquid crystal display comprising:

a display region formed on an array panel having a plurality of gate lines and a plurality of data lines arranged in rows and columns, respectively;

a data driving unit having a plurality of first data driving ICs and a plurality of second data driving ICs located proximal to the first data driving ICs, the plurality of first data driving ICs providing first data signals to a corresponding plurality of first data lines and the plurality of second data driving ICs providing second data signals to corresponding plurality of second data lines;

a gate driving unit having a plurality of gate driving ICs for providing scanning signals to the plurality of gate lines; and

a signal transmission film for transmitting the first data signals to the plurality of first data driving ICs and the second data signals to the plurality of second data driving ICs,

wherein the first data signals are inputted to a first data driving IC and shifted to a kth data driving IC, and the second data signals are inputted to a nth data driving IC and shifted to a (k+1)th data driving IC, wherein n is the total number of the data driving ICs, k is the number of the plurality of first data driving ICs, (n−

k) is the number of the plurality of second data driving ICs, and the k is 1<

k<

n−

1.

14. The LCD in accordance with claim 13, wherein the first data signals inputted to the first data driving IC are provided in reverse order, and the second data signals inputted to the nth data driving IC are provided in forward order.

15. The LCD in accordance with claim 14, wherein each of the plurality of first data driving ICs and the plurality of second driving ICs includes a shift direction selecting terminal, the shift direction selecting terminal is connected to a first voltage for shifting the first data signals in reverse order and connected to a second voltage for shifting the second data signals in forward order.

16. A method of driving an LCD comprising a display region formed on an array panel having a plurality of gate lines and a plurality of data lines arranged in rows and columns, respectively;

a data driving unit having a plurality of first data driving integrated circuits (ICs) and a plurality of second data driving ICs located proximal to the first data driving ICs;

a gate driving unit having a plurality of gate driving ICs; and

a signal transmission film having a first signal transmission film and a second transmission film, the method comprising the steps of;

serially shifting first data signals into the plurality of first data driving ICs in a forward order; and

serially shifting second data signals into the plurality of second data driving ICs in a reverse order,

wherein the shifting into the first and second data driving ICs occurs at the same time.

17. The method in accordance with claim 16, wherein the first data signals are inputted to a first data driving IC of the first data driving ICs through the first signal transmission film and shifted in the forward order to a kth data driving IC of the first data driving ICs;

and the second data signals are inputted to a nth data driving IC of the second data driving ICs through the second signal transmission film and shifted in the reverse order to a (k+1)th data driving IC of the second data driving ICs, wherein n is the total number of the data driving ICs, k is the number of the plurality of first data driving ICs, (n−

k) is the number of the plurality of second data driving ICs, and k is 1<

k<

n−

1.

18. A method of driving an LCD comprising a display region formed on an array panel having a plurality of gate lines and a plurality of data lines arranged in rows and columns, respectively;

a data driving unit having a plurality of first data driving integrated circuits (ICs) and a plurality of second data driving ICs located proximal to the first data driving ICs;

a gate driving unit having a plurality of gate driving ICs; and

a signal transmission film having a first signal transmission film and a second transmission film, the method comprising the steps of;

serially shifting first data signals from a kth data driving IC to a first data driving IC; and

serially shifting second data signals from a (k+1)th data driving IC to a nth data driving IC,

wherein n is the total number of the data driving ICs, k is the number of the plurality of first data driving ICs, (n−

k) is the number of the plurality of second data driving ICs, and the k is 1<

k<

n−

1.

19. The LCD in accordance with claim 18, wherein the first data signals inputted to the first data driving ICs are provided in forward order from the shifting of second data signals inputted to the second data driving ICs.