TOUCH SCREEN LIQUID CRYSTAL DISPLAY DEVICE

• US 20110043466A1
• Filed: 07/29/2010
• Published: 02/24/2011
• Est. Priority Date: 08/19/2009
• Status: Abandoned Application

• Current Assignee: Silicon Works Co., Ltd.
• Original Assignee: Silicon Works Co., Ltd.
• Inventors: KIM, An Young, KIM, Ji Hun, OH, Woong Jin, NA, Joon Ho, KIM, Dae Seong
• Application Number:
  US12/846,561
• Publication Number:
  US 20110043466A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence

Abstract

An touch screen liquid crystal display device includes a panel driving circuit including a gate driving block, a data driving block, and a signal control block and a liquid crystal module that stores data in data pixels through a data pixel line, to which the data pixels are connected, in response to a data signal applied from the data driving block, and reads data through a read pixel line to which read pixels are connected. The read pixels are connected to the data pixels through a share line.

Claims

1. A touch screen liquid crystal display device comprising:

a panel driving circuit including a gate driving block, a data driving block, and a signal control block; and

a liquid crystal module that stores data in data pixels through a data pixel line, to which the data pixels are connected, in response to a data signal applied from the data driving block, and reads data through a read pixel line to which read pixels are connected,

wherein the read pixels are connected to the data pixels through a share line.

2. The touch screen liquid crystal display device according to claim 1, wherein the data driving block includes:

an output buffer unit that outputs a data signal for driving the liquid crystal module;

a multiplexer unit that selects one of output signals of the output buffer unit and transmits the selected one to the liquid crystal module; and

a pad unit connected to the data pixel line and the share line of the liquid crystal module.

3. The touch screen liquid crystal display device according to claim 2, wherein the output buffer unit includes:

a data line output buffer that outputs the data signal to the data pixel line; and

a share line output buffer that outputs the data signal to the share line.

4. The touch screen liquid crystal display device according to claim 3, further including a bias current supply section that supplies the share line output buffer with a bias current.

5. The touch screen liquid crystal display device according to claim 4, further including a bias current control section that generates a signal for controlling the bias current.

6. The touch screen liquid crystal display device according to one of claims 3, wherein the multiplexer unit includes:

a data line multiplexer that selects and transmits one of output signals of the data line output buffer; and

a share line multiplexer that selects and transmits one of output signals of the share line output buffer.

7. The touch screen liquid crystal display device according to claim 6, wherein the share line multiplexer has a capacity larger than a capacity of the data line multiplexer.

8. The touch screen liquid crystal display device according to claim 6, wherein the multiplexer unit further includes a transmitter which is connected to an output terminal of the data line multiplexer and an output terminal of the share line multiplexer.