ACTIVE MATRIX DISPLAY AND FORMING METHOD THEREOF

• US 20090291612A1
• Filed: 05/21/2009
• Published: 11/26/2009
• Est. Priority Date: 02/15/1995
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Hirakata, Yoshiharu, Konuma, Toshimitsu, Teramoto, Satoshi, Koyama, Jun, Yamazaki, Shunpei, Kawasaki, Yuji
• Granted Patent: US 7,924,392 B2
• Time in Patent Office: Days
• US Class Current: 445/25
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: G02F 1/13454 Drivers integrated on the active matrix substrate G02F1/136277 takes precedence

Abstract

An active matrix liquid crystal display having improved reliability. Pixel regions and a peripheral driver circuit are integrally packed on the display. TFTs forming the peripheral driver circuit are located inside a sealing material layer on the side of a liquid crystal material, thus protecting the peripheral driver circuit from external moisture and contaminants. This enhances the long-term reliability of the peripheral driver circuit. Pixel TFTs are arranged in pixel regions. The leads going from the TFTs forming the peripheral driver circuit to the pixel TFTs are shortened. This results in a reduction in the resistance. As a result, the display characteristics are improved.

Claims

1. A method for manufacturing a portable apparatus comprising steps of:

forming a pixel portion, a driver circuit for driving the pixel portion, a controller for controlling the driver circuit, and an infrared light interface over a first substrate; and

forming a sealing material over the first substrate; and

providing a second substrate so as to facing the first substrate with the pixel portion, the driver circuit, the controller, the infrared light interface, and the sealing material interposed therebetween,

wherein the controller is entirely incorporated in the sealing material.

2. A method according to claim 1, further comprising the step of preparing a cordless sensor,

wherein the cordless sensor is coupled to the infrared light interface through an infrared signal.

3. A method according to claim 1, further comprising the step of preparing a sensor connected to the controller by a lead out cable.

4. A method according to claim 1, wherein the portable apparatus has a liquid crystal display device.

5. A method according to claim 1, wherein the portable apparatus has an EL display device.

6. A method according to claim 1, wherein the pixel portion comprises a plurality of transistors formed over the first substrate.

7. A method according to claim 1, wherein the driver circuit comprises a plurality of transistors for driving the pixel portion, formed over the first substrate.

8. A method for manufacturing a portable apparatus comprising steps of:

forming a pixel portion, a driver circuit for driving the pixel portion, a controller including a microprocessor for controlling the driver circuit, and an infrared light interface over a first substrate;

forming a sealing material so as to surround the pixel portion over the first substrate; and

providing a second substrate so as to facing the first substrate with the pixel portion, the driver circuit, the controller, the infrared light interface, and the sealing material interposed therebetween,

wherein the controller is entirely incorporated in the sealing material.

9. A method according to claim 8, further comprising the step of preparing a cordless sensor,

wherein the cordless sensor is coupled to the infrared light interface through an infrared signal.

10. A method according to claim 8, further comprising the step of preparing a sensor connected to the controller by a lead out cable.

11. A method according to claim 8, wherein the portable apparatus has a liquid crystal display device.

12. A method according to claim 8, wherein the portable apparatus has an EL display device.

13. A method according to claim 8, wherein the pixel portion comprises a plurality of transistors formed over the first substrate.

14. A method according to claim 8, wherein the driver circuit comprises a plurality of transistors for driving the pixel portion, formed over the first substrate.

15. A method for manufacturing a portable apparatus comprising steps of:

forming a pixel portion, a driver circuit for driving the pixel portion, a controller including a CPU for controlling the driver circuit, and an infrared light interface over a first substrate;

forming a sealing material so as to surround the pixel portion over the first substrate; and

providing a second substrate so as to facing the first substrate with the pixel portion, the driver circuit, the controller, the infrared light interface, and the sealing material interposed therebetween,

wherein the controller is entirely incorporated in the sealing material.

16. A method according to claim 15, further comprising the step of preparing a cordless sensor,

wherein the cordless sensor is coupled to the infrared light interface through an infrared signal.

17. A method according to claim 15, further comprising the step of preparing a sensor connected to the controller by a lead out cable.

18. A method according to claim 15, wherein the portable apparatus has a liquid crystal display device.

19. A method according to claim 15, wherein the portable apparatus has an EL display device.

20. A method according to claim 15, wherein the pixel portion comprises a plurality of transistors formed over the first substrate.

21. A method according to claim 15, wherein the driver circuit comprises a plurality of transistors for driving the pixel portion, formed over the first substrate.