Claims
- 1. A method for producing a reflection type liquid crystal display comprising:
- a first substrate including a rough portion formed on a surface thereof, a reflection electrode formed on the rough portion, the reflection electrode including a surface oxidation layer, and a vertical alignment film made of insulating material formed on the surface oxidation layer;
- a second substrate including a counter electrode formed thereon; and
- a liquid crystal layer interposed between the first and second substrates, driven by the reflection electrode and the counter electrode to perform a display, the method including the steps of:
- pattering the reflection electrode from a thin metallic film made of aluminum or aluminum alloy which is formed on the first substrate covering the rough portion;
- oxidizing a surface of the reflection electrode whereby forming a surface oxidation layer having a thickness of at least 5 nm;
- applying vertical alignment film material at least on the surface oxidation layer; and
- heating and curing the vertical alignment film material whereby forming the vertical alignment film.
- 2. A method for producing a reflection type liquid crystal display according to claim 1, wherein the surface oxidation layer is formed to have a thickness of 5 nm to 10 nm in the oxidizing step.
- 3. A method for producing a reflection type liquid crystal display according to claim 1, wherein the oxidizing step is performed in an atmosphere including oxygen and at a temperature 170.degree. C. to 200.degree. C. which is higher than a heating temperature of the heating and curing step.
- 4. A method for producing a reflection type liquid crystal display according to claim 1, wherein the oxidizing step is performed by soaking the reflection electrode in hydrogen peroxide solution or nitric acid solution.
- 5. A method for producing a reflection type liquid crystal display comprising:
- a first substrate including a rough portion formed on a surface thereof, a reflection electrode formed on the rough portion, an oxide film formed on the reflection electrode, and a vertical alignment film made of insulating material formed on the oxide film;
- a second substrate including a counter electrode formed thereon; and
- a liquid crystal layer interposed between the first and second substrates, driven by the reflection electrode and the counter electrode to perform a display, the method including the steps of:
- pattering the reflection electrode from a thin metallic film made of aluminum or aluminum alloy which is formed on the first substrate covering the rough portion;
- forming an oxide film on the first substrate so as to cover the reflection electrode;
- applying vertical alignment film material on the oxidized film; and
- heating and curing the vertical alignment film material whereby forming the vertical alignment film.
- 6. A method for producing a reflection type liquid crystal display according to claim 5, wherein the oxide film is formed to have a thickness of 50 nm to 100 nm in the forming step.
- 7. A method for producing a reflection type liquid crystal display according to claim 5, wherein the oxide film is made of silicon oxide.
Priority Claims (1)
Number |
Date |
Country |
Kind |
6-239216 |
Oct 1994 |
JPX |
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RELATED U.S. APPLICATION DATA
This application is a divisional application of a U.S. patent application Ser. No. 08/535,952 filed on Sep. 29, 1995, now U.S. Pat. No. 5,805,252.
US Referenced Citations (7)
Foreign Referenced Citations (2)
Number |
Date |
Country |
56-156864 |
Dec 1981 |
JPX |
2 066 545 |
Jul 1981 |
GBX |
Non-Patent Literature Citations (2)
Entry |
White, et al., "New absorptive mode reflective liquid-crystal display device", J. Appl. Phys. vol. 45, No. 11, pp. 4718-23 (Nov. 1974). |
Kolzumi, et al., "Reflective Multicolor LCD (II): Improvement in the Brightness", Proceedings of the SID, vol. 29/2, pp. 157-160 (1988). |
Divisions (1)
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Number |
Date |
Country |
Parent |
535952 |
Sep 1995 |
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