Display module

• US 6,771,248 B2
• Filed: 10/24/2001
• Issued: 08/03/2004
• Est. Priority Date: 10/27/2000
• Status: Expired due to Fees

• 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
• Primary Examiner(s): Shalwala, Bipin
• Assistant Examiner(s): PIZIALI, JEFFREY J
• Application Number:
  US09/983,503
• Publication Number:
  US 20020050968A1
• Time in Patent Office: 1,014 Days
• Field of Search: 345/55, 345/64, 345/66-68, 345/71, 345/80, 345/87, 345/94, 345/98-100, 345/103, 345/104, 345/204-206, 345/208, 345/211, 345/214, 315/169.3, 349/39, 349/42, 349/49, 349/52, 349/54
• US Class Current: 345/100
• 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 at least one driving signal in a column direction and at least one driving signal in a row direction;

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

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

at least one first wiring substrate for mounting thereon said first driving assembly;

at least one second wiring substrate for mounting thereon said second driving assembly; and

a control device for controlling said first and second driving assemblies, which is installed directly on only one of said at least one first or second wiring substrate together with said first or second driving assembly, wherein the first and second wiring substrates are separate substrates.

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:

the first driving assembly and the second driving assembly includes a plurality of first driving devices and a plurality of second driving devices, respectively;

the plurality of 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 single driving device of the plurality of driving devices which is located first among the cascaded first or second driving devices.

4. The display module of claim 1, wherein:

said first driving assembly is a source driver; and

said second driving assembly 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 3, wherein:

output signals supplied from an external device to the 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 cascaded to driving devices on said wiring substrate, and output data.

7. The display module of claim 1, wherein:

said at least one 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 1, wherein:

said control device installed on said at least one first or second wiring substrate is positioned on a fringe of the display device between both said first and second driving assemblies.

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 assemblies is composed of a LSI chip.

11. The display module of claim 3, wherein:

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

12. The display module of claim 3, wherein:

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

13. The display module of claim 8, wherein:

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

14. A display module comprising:

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

at least one source driver for supplying said driving signal in the column direction;

at least one gate driver for supplying said driving signal in the row direction;

at least one first wiring substrate for mounting thereon said source driver;

at least one second wiring substrate for mounting thereon said date driver, which is separated from said first wiring substrate; and

a control device for controlling said source driver and said gate driver, which is installed directly on only said first wiring substrate.