Active matrix display with sealing material

• US 6,011,607 A
• Filed: 02/15/1996
• Issued: 01/04/2000
• Est. Priority Date: 02/15/1995
• Status: Expired due to Term

• 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): Sikes, William L.
• Assistant Examiner(s): DUDEK, JAMES A
• Application Number:
  US08/601,956
• Time in Patent Office: 1,419 Days
• Field of Search: 349/149, 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. An active matrix display comprising:

a pixel region formed on a substrate;

a driver circuit for driving said pixel region, said driver circuit being formed on said substrate;

a sealing material applied to an outer frame of said substrate;

at least one integrated circuit connected to said driver circuit;

wherein said integrated circuit is incorporated in said sealing material, and wherein said integrated circuit is a processor for controlling said driver circuit.

2. The display of claim 1 wherein said sealing material serves as a shock-absorbing material for said integrated circuit.

3. The display of claim 1 wherein said driver circuit is incorporated in said sealing material.

4. An active matrix display comprising:

a first substrate on which a pixel region and a driver circuit are formed, said driver circuit driving said pixel region,

a second substrate opposed to said first substrate;

a sealing material applied to an outer frame of said first or second substrate;

a liquid crystal material injected between said first and second substrates and inside said sealing material;

an integrated circuit connected to said driver circuit, said integrated circuit being incorporated in said sealing material;

wherein a space for disposing said integrated circuit is formed between said first and second substrates and said sealing material is applied in said space, and

wherein said integrated circuit is a processor for controlling said driver circuit.

5. The display of claim 4 wherein said first substrate comprises a thinly formed portion and said space is formed between said thinly formed portion and said second substrate,

thickness of said integrated circuit being larger than a space for injecting said liquid crystal material between said first and second substrates.

6. The display of claim 4 wherein said second substrate comprises a thinly formed portion and said space is formed between said thinly formed portion and said first substrate,

thickness of said integrated circuit being larger than a space for injecting said liquid crystal material between said first and second substrates.

7. The display of claim 4 wherein said sealing material serves as a shock-absorbing material for said integrated circuit.

8. The display of claim 4 wherein said driver circuit is coated with said sealing material.

9. An active matrix display comprising:

a pixel region formed on a substrate;

a driver circuit formed in periphery of said pixel region to drive said pixel region, said driver circuit being formed on said substrate;

a control circuit formed in periphery of said pixel region to drive said driver circuit, said control circuit being formed on said substrate;

a sealing material applied to an outer frame of said substrate; and

a liquid crystal material provided inside said sealing material;

wherein said pixel region, said driver circuit and said control circuit are positioned inside said sealing material, respectively.

10. An active matrix display comprising:

a pixel region formed on a substrate;

a driver circuit for driving said pixel region, said driver circuit being formed on said substrate;

a sealing material applied to an outer frame of said substrate; and

at least one integrated circuit connected to said driver circuit and provided on said substrate by chip on glass, said at least one integrated circuit being a processor for controlling said driver circuit,

wherein said at least one integrated circuit is incorporated in said sealing material.

11. An active matrix display comprising:

pixel region formed on a substrate;

a driver circuit for driving said pixel region, said driver circuit being formed on said substrate;

a sealing material applied to an outer frame of said substrate;

at least one circuit selected from the group consisting of a CPU, a ROM, a RAM, a serial I/O, an interrupt control circuit, a timing generator, a timer circuit, a counter circuit, an analog digital conversion circuit, and a digital analog conversion circuit, said at least one circuit being connected to said driver circuit,

wherein said at least one circuit is incorporated in said sealing material.

12. The display of claim 11 wherein said display is one of a liquid crystal display, an electroluminescent display, and a plasma display.

13. An active matrix display comprising:

a first substrate on which a pixel region and a driver circuit are formed, said driver circuit driving said pixel region;

a second substrate opposed to said first substrate;

a sealing material applied to an outer frame of said first or second substrate;

a liquid crystal material injected between said first and second substrates and inside said sealing material;

at least one circuit selected from the group consisting of a CPU, a ROM, a RAM, a serial I/O, an interrupt control circuit, a timing generator, a timer circuit, a counter circuit, an analog digital conversion circuit, and a digital analog conversion circuit, said at least one circuit being connected to said driver circuit, said at least one circuit being incorporated in said sealing material,

wherein a space for disposing said at least one circuit is formed between said first and second substrates and said sealing material is applied in said space.

14. The display of claim 13 wherein said display is one of a liquid crystal display, an electroluminescent display, and a plasma display.

15. An active display comprising:

a pixel region formed on a substrate;

a driver circuit for driving said pixel region, said driver circuit being formed on said substrate;

a sealing material applied to an outer frame of said substrate; and

at least one circuit selected from the group consisting of a CPU, a ROM, a RAM, a serial I/O, an interrupt control circuit, a timing generator, a timer circuit, a counter circuit, an analog digital conversion circuit, and a digital analog conversion circuit, said at least one circuit being connected to said driver circuit and being provided on said substrate by chip on glass,

wherein said at least one circuit is incorporated in said sealing material.

16. The display of claim 15 wherein said display is one of a liquid crystal display, an electroluminescent display, and a plasma display.

17. An active matrix display comprising:

a pixel region formed on a substrate;

a driver circuit formed in periphery of said pixel region to drive said pixel region, said driver circuit being formed on said substrate;

at least one circuit selected from the group consisting of a CPU, a ROM, a RAM, a serial I/O, an interrupt control circuit, a timing generator, a timer circuit, a counter circuit, an analog digital conversion circuit, and a digital analog conversion circuit, said at least one circuit being formed in periphery of said pixel region to drive said driver circuit and being provided on said substrate by chip on glass,

a sealing material applied to an outer frame of said substrate; and

a liquid crystal material provided inside said sealing material;

wherein said pixel region, said driver circuit and said at least one circuit are positioned inside said sealing material, respectively.

18. The display of claim 17 wherein said display is one of a liquid crystal display, an electroluminescent display, and a plasma display.