Electrode substrate, making the same, liquid crystal device provided therewith, and making the same

• US 5,777,710 A
• Filed: 04/24/1996
• Issued: 07/07/1998
• Est. Priority Date: 04/28/1995
• Status: Expired due to Term

• Current Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Original Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Inventors: Okada, Shinjiro, Tomono, Haruo, Matsuo, Yuji
• Primary Examiner(s): Sikes, William L.
• Assistant Examiner(s): TON, MINH TOAN T
• Application Number:
  US08/637,180
• Time in Patent Office: 804 Days
• Field of Search: 349/147, 349/148, 349/138
• US Class Current: 349/138
• CPC Class Codes: G02F 1/134336 Matrix
• CPC Class Codes: G02F 1/13439 characterised by their electrical, optical, physical properties; materials therefor; method of making

Abstract

The present invention intends to provide an electrode substrate having at least a transparent electrode and a metal electrode provided on a transparent substrate, in which the metal electrode is formed on the transparent substrate through a dielectric layer having an irregular surface. The present invention further intends to provide a liquid crystal device having the electrode substrate, and methods for producing them. According to such a structure, the reflection of the outside light at the surface of the metal electrode can be prevented. Further, the electrode substrate can be readily produced.

Claims

1. An electrode substrate comprising:

at least a transparent electrode and a metal electrode provided on a transparent substrate,

said metal electrode being formed on said transparent substrate through a dielectric layer having an irregular surface such that light incident on the dielectric layer from a transparent substrate side is reflected at random or scattered.

2. An electrode substrate according to claim 1, wherein said metal electrode and said transparent electrode directly contact each other.

3. An electrode substrate according to claim 1, wherein said dielectric layer comprises an organic resin.

4. An electrode substrate according to claim 3, wherein said organic resin is an ultraviolet-curable resin.

5. An electrode substrate according to claim 1, wherein at least one section of the interface between said metal electrode and said dielectric layer has an irregular surface.

6. A liquid crystal device provided with an electrode substrate comprising:

at least a transparent electrode and metal electrode provided on a transparent substrate,

said metal electrode being formed on said transparent substrate through a dielectric layer having an irregular surface such that light incident on the dielectric layer from a transparent substrate side is reflected at random or scattered.

7. A liquid crystal device according to claim 6, wherein said metal electrode and said transparent electrode directly contact each other.

8. A liquid crystal device according to claim 6, wherein said dielectric layer comprises an organic resin.

9. A liquid crystal device according to claim 8, wherein said organic resin is an ultraviolet-curable resin.

10. A liquid crystal device according to claim 6, wherein at least one section of the interface between said metal electrode and said dielectric layer has an irregular surface.

11. A liquid crystal device according to any one of claims 6 to 10, wherein said liquid crystal is a chiral smectic liquid crystal.

12. A liquid crystal device according to any one of claims 6 to 10, wherein said liquid crystal is a ferroelectric liquid crystal.

13. A liquid crystal device according to any one of claims 6 to 10, wherein said liquid crystal is a liquid crystal having at least two stable states or metastable states.

14. An electrode substrate comprising:

at least a first electrode and a second electrode provided on a transparent substrate, said first electrode being a transparent electrode, said second electrode having a lower resistance than said first electrode, and said second electrode being formed on said transparent substrate through a dielectric layer having an irregular surface such that light incident on the dielectric layer from a transparent substrate side is reflected at random or scattered.

15. A liquid crystal device provided with an electrode substrate comprising:

at least a first electrode and a second electrode provided on a transparent substrate, said first electrode being a transparent electrode, said second electrode having a lower resistance than said first electrode, and said second electrode being formed on said transparent substrate through a dielectric layer having an irregular surface such that light incident on the dielectric layer from a transparent substrate side is reflected at random or scattered.

16. An electrode substrate comprising:

at least a transparent electrode and a metal electrode provided on a transparent substrate,

said metal electrode being formed on said transparent substrate through a dielectric layer comprising an organic resin having an irregular surface.

17. An electrode substrate according to claim 16, wherein said organic resin is an ultraviolet-curable resin.

18. A liquid crystal device provided with an electrode substrate comprising:

at least a transparent electrode and a metal electrode provided on a transparent substrate,

said metal electrode being formed on said transparent substrate through a dielectric layer comprising an organic resin having an irregular surface.

19. A liquid crystal device according to claim 18, wherein said organic resin is an ultraviolet-curable resin.

20. An electrode substrate comprising:

at least a first electrode and a second electrode provided on a transparent substrate,

said first electrode being a transparent electrode, said second electrode having a lower resistance than said first electrode, and said second electrode being formed on said transparent substrate through a dielectric layer comprising an organic resin having an irregular surface.

21. An electrode substrate according to claim 20, wherein said organic resin is an ultraviolet curable resin.

22. A liquid crystal device provided with an electrode substrate comprising:

at least a first electrode and a second electrode provided on a transparent substrate,

said first electrode being a transparent electrode, said second electrode having a lower resistance than said first electrode, and said second electrode being formed on said transparent substrate through a dielectric layer comprising an organic resin having an irregular surface.

23. A liquid crystal device according to claim 22, wherein said organic resin is an ultraviolet-curable resin.

24. An electrode substrate comprising:

a transparent substrate, a plurality of first electrodes disposed with a spacing therebetween on the transparent substrate through a first dielectric layer having an irregular surface, a second dielectric layer filling the spacing, and a plurality of second electrodes disposed so as to be in contact with the associated first electrodes, respectively, wherein the irregular surface comprises a surface oblique to the surface of the transparent substrate.

25. An electrode substrate according to claim 24, wherein said first electrodes are metal electrodes.

26. An electrode substrate according to claim 24, wherein said second electrodes are transparent electrodes.

27. An electrode substrate according to claim 25, wherein said second electrodes have a lower resistance than said first electrodes.

28. An electrode substrate among to claim 24, wherein said second dielectric layer composes an organic resin.

29. An electrode substrate according to claim 28, wherein said organic resin is an ultraviolet curable resin.

30. A liquid crystal device provided with an electrode substrate comprising:

a transparent substrate, a plurality of first electrodes disposed with a spacing therebetween on the transparent substrate through a first dielectric layer having an irregular surface, a second dielectric layer filling the spacing, and a plurality of second electrodes disposed so as to be in contact with the associated first electrodes, respectively, wherein the irregular surface comprises a surface oblique to the surface of the transparent substrate.

31. A liquid crystal device according to claim 30, wherein said first electrodes are metal electrodes.

32. A liquid crystal device according to claim 30, wherein said second electrodes are transparent electrodes.

33. A liquid crystal device according to claim 31, wherein said second electrodes have a lower resistance than said first electrodes.

34. A liquid crystal device according to claim 30, when said second dielectric layer comprises an organic resin.

35. A liquid crystal device according to claim 34, wherein said organic resin is an ultraviolet-curable resin.