IC chip and display device using the same

• US 20020186341A1
• Filed: 05/29/2002
• Published: 12/12/2002
• Est. Priority Date: 06/08/2001
• Status: Active Grant

• Current Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: Miyajima, Yasushi, Hirosawa, Koji, Yokoyama, Ryoichi, Yamamura, Kuni
• Granted Patent: US 7,072,018 B2
• Time in Patent Office: Days
• US Class Current: 349/149
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels
• CPC Class Codes: G02F 1/13454 Drivers integrated on the active matrix substrate G02F1/136277 takes precedence
• CPC Class Codes: G02F 2203/01 transmissive

Abstract

Disclosed is an IC chip using a glass substrate capable of being manufactured at a lower cost than the IC chip using from a semiconductor wafer. Further, where the body substrate of a display device is made of glass, the IC chip and the body substrate can have equal coefficients of thermal expansion, thus preventing the IC chips from peeling off and reducing the failure rate. Furthermore, the gate line driving IC applied to a display device can be arranged as an IC chip having a length approximately equal to the display area, therefore, mounting a plurality of IC chips as the gate driving IC is not required, thereby reducing the production cost. Still further, all gate lines can be extended in parallel from the IC chip so that no difference in the delay occurs among the gate lines and the size of frame of display device can reduced.

Claims

1. An integrated circuit chip comprising:

an integrated circuit substrate made of glass;

a plurality of circuit elements provided on said integrated circuit substrate; and

wirings connecting said plurality of circuit elements,

wherein a part of said plurality of circuit elements is made from polycrystalline silicon.

2. A display device comprising:

a body substrate made of glass;

a display area with a plurality pixel electrodes provided on said body substrate; and

a plurality of driving integrated circuit chips formed on said body substrate for supplying a video signal to said pixel electrodes,

wherein at least one of said plurality driving integrated circuit chips includes a plurality of elements formed on an integrated circuit substrate made of glass.

3. The display device as claimed in claim 2, further comprising a plurality of switching elements provided on said body substrate and connected to said pixel electrode and said driving integrated circuit chip.

4. The display device as claimed in claim 2, further comprising:

a second body substrate of glass opposite to said body substrate;

a common electrode formed below said second body substrate opposite to said plurality of pixel electrodes; and

liquid crystal sealed between said body substrate and common electrode.

5. The display device as claimed in claim 3, further comprising:

gate lines formed on said body substrate and connected to the gates of said switching elements; and

signal lines formed on said body substrate and connected to said pixel electrodes though said switching elements,

wherein said driving integrated circuit chips include a gate line driving IC chip connected to said gate lines and a signal line driving IC chip connected to said signal lines,

wherein at least one of said gate line driving integrated circuit chip and said signal line driving integrated circuit chip includes a plurality of elements formed on an IC substrate made of glass.

6. The display device as claimed in claim 3, further comprising:

gate lines formed on said body substrate and connected to the gates of said switching elements; and

signal lines formed on said body substrate and connected to said pixel electrodes though said switching elements,

wherein said driving integrated circuit chips include a gate line driving IC chip connected to said gate lines and a signal line driving IC chip connected to said signal lines,

wherein said gate line driving integrated circuit chip includes a plurality of elements formed on an integrated circuit substrate made of glass, and

wherein said signal line driving IC includes a plurality of elements formed on an integrated circuit substrate made of single crystal silicon

7. The display device as claimed in claim 3,

wherein said switching element formed on said body substrate includes an active layer of amorphous silicon,

wherein said element formed on said integrated circuit substrate includes an active layer of polycrystalline silicon.

8. The display device as claimed in claim 3, wherein said switching elements are thin film transistors.

9. The display device as claimed in claim 6,

wherein said gate line driving integrated circuit chip is arranged as a single unit along a one side of said display area,

wherein the gate lines are extended substantially in parallel from said gate line driving integrated circuit chip to said display area.

10. The display device as claimed in claim 9, wherein said gate line driving integrated circuit chip has a length substantially the same as a length of the one side of said display area.

11. A display device comprising:

a body substrate made of glass;

a display area with a plurality pixel electrodes provided on said body substrate; and

a plurality of switching elements provided on said body substrate and connected to said pixel electrode;

a plurality of driving integrated circuit chips formed on said body substrate connected to said plurality of switching elements,

wherein at least one of said plurality driving integrated circuit chips includes a plurality of elements formed on an integrated circuit substrate made of glass.

12. The display device as claimed in claim 11, further comprising:

gate lines formed on said body substrate and connected to the gates of said switching elements; and

signal lines formed on said body substrate and connected to said pixel electrodes though said switching elements,

wherein said driving integrated circuit chips include a gate line driving IC chip connected to said gate lines and a signal line driving IC chip connected to said signal lines,

wherein at least one of said gate line driving integrated circuit chip and said signal line driving integrated circuit chip includes a plurality of elements formed on an IC substrate made of glass.

13. The display device as claimed in claim 11, further comprising:

gate lines formed on said body substrate and connected to the gates of said switching elements; and

signal lines formed on said body substrate and connected to said pixel electrodes though said switching elements,

wherein said driving integrated circuit chips include a gate line driving IC chip connected to said gate lines and a signal line driving IC chip connected to said signal lines,

wherein said gate line driving integrated circuit chip includes a plurality of elements formed on an integrated circuit substrate made of glass, and

wherein said signal line driving IC includes a plurality of elements formed on an integrated circuit substrate made of single crystal silicon

15. The display device as claimed in claim 14, further comprising:

gate lines formed on said first body substrate and connected to the gates of said switching elements; and

signal lines formed on said first body substrate and connected to said pixel electrodes though said switching elements,

wherein said driving integrated circuit chips include a gate line driving IC chip connected to said gate lines and a signal line driving IC chip connected to said signal lines,

wherein at least one of said gate line driving integrated circuit chip and said signal line driving integrated circuit chip includes a plurality of elements formed on an IC substrate made of glass.

16. The display device as claimed in claim 14, further comprising:

gate lines formed on said first body substrate and connected to the gates of said switching elements; and

signal lines formed on said first body substrate and connected to said pixel electrodes though said switching elements,

wherein said driving integrated circuit chips include a gate line driving IC chip connected to said gate lines and a signal line driving IC chip connected to said signal lines,

wherein said gate line driving integrated circuit chip includes a plurality of elements formed on an integrated circuit substrate made of glass, and

wherein said signal line driving IC includes a plurality of elements formed on an integrated circuit substrate made of single crystal silicon

18. The display device as claimed in claim 17,

wherein said gate line driving integrated circuit chip includes a plurality of elements formed on an integrated circuit substrate made of glass, and

wherein said signal line driving IC includes a plurality of elements formed on an integrated circuit substrate made of single crystal silicon.

19. The display device as claimed in claim 17,

wherein said gate line driving integrated circuit chip is arranged as a single unit along a one side of said display area, and

wherein the gate lines are extended substantially in parallel from said gate line driving integrated circuit chip to said display area.

20. The display device as claimed in claim 19, wherein said gate line driving integrated circuit chip has a length substantially the same as a length of the one side of said display area.

14. A display device comprising:

a first body substrate made of glass;

a display area with a plurality pixel electrodes provided on said first body substrate; and

a plurality of switching elements provided on said first body substrate and connected to said pixel electrode;

a second body substrate of glass opposite to said second body substrate;

a common electrode formed below said second body substrate opposite to said plurality of pixel electrodes;

liquid crystal sealed between said first body substrate and common electrode; and

a plurality of driving integrated circuit chips formed on said first body substrate and connected to said plurality of switching elements,

wherein at least one of said plurality driving integrated circuit chips includes a plurality of elements formed on an integrated circuit substrate made of glass.

17. A display device comprising:

a body substrate made of glass;

a display area with a plurality pixel electrodes provided on said body substrate;

a plurality of switching elements provided on said body substrate and connected to said pixel electrode;

gate lines formed on said body substrate and connected to the gates of said switching elements;

signal lines formed on said body substrate and connected to said pixel electrodes though said switching elements;

a gate line driving IC chip connected to said gate lines; and

a signal line driving IC chip connected to said signal lines,

wherein at least one of said gate line driving integrated circuit chip and said signal line driving integrated circuit chip includes a plurality of elements formed on an IC substrate made of glass.

21. A display device comprising:

a body substrate made of glass;

a display area with a plurality pixel electrodes provided on said body substrate;

a plurality of switching elements provided on said body substrate and connected to said pixel electrode;

gate lines formed on said body substrate and connected to the gates of said switching elements;

signal lines formed on said body substrate and connected to said pixel electrodes though said switching elements;

a gate line driving IC chip connected to said gate lines; and

a signal line driving IC chip connected to said signal lines,

wherein said gate line driving integrated circuit chip includes a plurality of elements formed on an integrated circuit substrate made of glass, and

wherein said signal line driving IC includes a plurality of elements formed on an integrated circuit substrate made of single crystal silicon.

22. The display device as claimed in claim 21,

wherein said gate line driving integrated circuit chip is arranged as a single unit along a one side of said display area, and

wherein the gate lines are extended substantially in parallel from said gate line driving integrated circuit chip to said display area.

23. The display device as claimed in claim 22, wherein said gate line driving integrated circuit chip has a length substantially the same as a length of the one side of said display area.