Display module

• US 20020050968A1
• Filed: 10/24/2001
• Published: 05/02/2002
• Est. Priority Date: 10/27/2000
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Tanaka, Shigeki, Ogawa, Yoshinori
• Granted Patent: US 6,771,248 B2
• Time in Patent Office: Days
• US Class Current: 345/87
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels
• CPC Class Codes: G09G 3/3688 suitable for active matrices only

Abstract

A display module of the present invention includes a liquid crystal panel driven by a driving signal in a column direction and a driving signal in a row direction; a source driver for supplying the driving signal in the column direction; a gate driver for supplying the driving signal in the row direction; a TCP type film provided with the source driver; a TCP type film provided with the gate driver; and a controller circuit for controlling the gate driver and the source driver, which is installed on the TCP type film together with the source driver or the gate driver. With this structure, the number of parts can be reduced, achieving miniaturization, weight reduction, and cost reduction.

Claims

1. A display module comprising:

a display device driven by a driving signal in a column direction and a driving signal in a row direction;

a first driving device for supplying said driving signal in the column direction;

a second driving device for supplying said driving signal in the row direction;

a first wiring substrate for mounting thereon said first driving device;

a second wiring substrate for mounting thereon said second driving device; and

a control device for controlling said first and second driving devices, which is installed on said first or second wiring substrate together with said first or second driving device.

2. The display module of claim 1, wherein:

said first and second wiring substrates are made of insulating films having wiring.

3. The display module of claim 1, wherein:

a plurality of said first driving devices and a plurality of said second driving devices are provided respectively;

said first and second driving devices are installed on the respective first and second wiring substrates;

the plurality of said first driving devices and the plurality of said second driving devices are respectively cascaded so that said first driving devices and said second driving devices are respectively connected sequentially; and

said control device is installed on an identical wiring substrate together with a driving device which is located first of the cascaded first or second driving devices.

4. The display module of claim 1, wherein:

said first driving device is a source driver; and

said second driving device is a gate driver.

5. The display module of claim 1, wherein:

said control device is installed on a wiring substrate provided with a source driver.

6. The display module of claim 1, wherein:

output signals supplied from an external device to a wiring substrate provided with said control device include a synchronization signal, display data, and a voltage for generating reference voltages; and

output signals supplied from said wiring substrate provided with said control device include a driving voltage for driving said display device, a control signal transmitted to a driving device in a next stage of the cascaded driving devices, and output data.

7. The display module of claim 1, wherein:

said first and second wiring substrates are provided at a fringe section formed in a periphery of said display device.

8. The display module of claim 11 wherein:

said control device installed on said first or second wiring substrate is positioned in close vicinity to both said first and second driving devices.

9. The display module of claim 1, wherein:

said display module is a liquid crystal display module.

10. The display module of claim 1, wherein:

each of said first and second driving devices is composed of a LSI chip.

11. The display module of claim 3, wherein:

said control device and said first driving device are aligned in a direction parallel to a direction in which said first driving devices are aligned.

12. The display module of claim 3, wherein:

said control device and said first driving device are aligned in a direction orthogonal to a direction in which said first driving devices are aligned.

13. The display module of claim 8, wherein:

said control device includes a liquid crystal driving power source circuit.