Active matrix display and forming method thereof

• US 7,538,849 B2
• Filed: 01/12/2004
• Issued: 05/26/2009
• Est. Priority Date: 02/15/1995
• Status: Expired due to Fees

• 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
• Primary Examiner(s): Nelms; David
• Assistant Examiner(s): Chien; Lucy P
• Application Number:
  US10/754,702
• Publication Number:
  US 20040141139A1
• Time in Patent Office: 1,961 Days
• Field of Search: 349/151, 349/153
• US Class Current: 349/153
• 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 portable apparatus for a health management comprising:

a display device having a pixel circuit, a driver circuit for driving the pixel circuit, and a controller including a microprocessor for controlling the driver circuit and an infrared light interface, which are formed between a pair of substrates;

a sealing material formed between the pair of substrates; and

a cordless sensor for measuring body temperature,

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

wherein the controller is entirely incorporated in the sealing material.

2. A portable apparatus according to claim 1, wherein the display device is a liquid crystal display device.

20. A portable apparatus according to claims 1, wherein the cordless sensor is controlled by the controller.

3. A portable apparatus for a health management comprising:

a display device having a pixel circuit, a driver circuit for driving the pixel circuit, and a controller including a CPU for controlling the driver circuit and an infrared light interface, which are formed between a pair of substrates;

a sealing material formed between the pair of substrates; and

a cordless sensor for measuring body temperature,

wherein the cordless sensor is coupled to the infrared light interface through an infrared signal, and wherein the controller is entirely sealed by the liquid crystal material.

4. A portable apparatus according to claim 3, wherein the display device is a liquid crystal display device.

21. A portable apparatus according to claims 3, wherein the cordless sensor is controlled by the controller.

5. A portable apparatus for a health management comprising:

a first substrate;

a second substrate opposed to the first substrate;

an infrared light interface formed between the first substrate and the second substrate;

a liquid crystal material formed between the first substrate and the second substrate;

a sealing material formed between the first substrate and the second substrate;

a pixel region comprising a plurality of TFTs formed over the first substrate;

a driver circuit comprising a plurality of TFTs for driving the pixel region, formed over the first substrate;

a controller including a CPU for controlling the driver circuit formed over the first substrate; and

a cordless sensor for measuring body temperature,

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

wherein the controller is entirely incorporated in the sealing material.

6. A portable apparatus according to claim 5, wherein the controller is connected to a body temperature measurement.

22. A portable apparatus according to claims 5, wherein the cordless sensor is controlled by the controller.

7. A portable apparatus for a health management comprising:

a first substrate;

a second substrate opposed to the first substrate;

an infrared light interface formed between the first substrate and the second substrate;

a liquid crystal material formed between the first substrate and the second substrate;

a sealing material formed between the first substrate and the second substrate;

a pixel region comprising a plurality of TFTs formed over the first substrate;

a driver circuit comprising a plurality of TFTs for driving the pixel region, formed over the first substrate;

a CPU comprising a plurality of TFTs formed over the first substrate; and

a cordless sensor for measuring body temperature,

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

wherein the CPU is entirely sealed by the liquid crystal material.

8. A portable apparatus according to claim 7, wherein the controller is connected to a body temperature measurement.

23. A portable apparatus according to claims 7, wherein the cordless sensor is controlled by the controller.

9. A portable apparatus for a health management comprising:

a pixel circuit provided between a pair of substrates;

a driver circuit for driving the pixel circuit, the driver circuit provided between the pair of substrates;

a cordless sensor for measuring body temperature;

an infrared light interface for coupling to the cordless sensor through an infrared signal;

a controller including a CPU for controlling the driver circuit and the infrared light interface, the controller provided between the pair of substrates;

a liquid crystal material formed between the pair of substrates; and

a sealing material formed between the pair of substrates,

wherein the controller is entirely incorporated in the sealing material.

10. A portable apparatus according to claim 9 wherein the display device is a liquid crystal display device.

11. A portable apparatus according to claim 9 wherein the driver circuit comprises a thin film transistor.

24. A portable apparatus according to claims 9, wherein the cordless sensor is controlled by the controller.

12. An information system comprising:

a pixel circuit provided between a pair of substrates, the pixel circuit provided in a display section;

a driver circuit for driving the pixel circuit, the driver circuit provided between the pair of substrates;

a cordless sensor for measuring body temperature;

an infrared light interface for coupling to the cordless sensor through an infrared signal;

a controller including a CPU for controlling the driver circuit and the infrared light interface, the controller provided between the pair of substrates; and

a sealing material formed between the pair of substrates,

wherein the controller is entirely incorporated in the sealing material.

13. An information system according to claim 12 wherein the pixel circuit comprises a thin film transistor.

14. An information system according to claim 12 wherein the driver circuit comprises a thin film transistor.

15. An information system according to claim 12 wherein the information system is used for health management.

25. A information system according to claims 12, wherein the cordless sensor is controlled by the controller.

16. An information system comprising:

a pixel circuit provided over a substrate, the pixel circuit provided in a display section;

a driver circuit for driving the pixel circuit, the driver circuit provided over the substrate;

a cordless sensor for measuring body temperature;

an infrared light interface for coupling to the cordless sensor through an infrared signal; and

a controller circuit including a CPU for controlling the driver circuit and the infrared light interface, the contrtoller provided over the substate, and the infrared light interface provided between a substrate and another substate, wherein the controller is entirely sealed by a liquid crystal material.

17. An information system according to claim 16 wherein the pixel circuit comprises a thin film transistor.

18. An information system according to claim 16 wherein the driver circuit comprises a thin film transistor.

19. An information system according to claim 16 wherein the information system is used for health management.

26. A information system according to claims 16, wherein the cordless sensor is controlled by the controller.