Film forming method for manufacturing planar periodic structure having predetermined periodicity

• US 7,413,765 B2
• Filed: 03/05/2004
• Issued: 08/19/2008
• Est. Priority Date: 03/06/2003
• Status: Active Grant

• Current Assignee: Kateeva, Inc.
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Ito, Tatsuya, Oyama, Takeshi
• Primary Examiner(s): Bashore; Alain L.
• Application Number:
  US10/794,772
• Publication Number:
  US 20040228964A1
• Time in Patent Office: 1,628 Days
• Field of Search: 427/162, 427/164, 427/266, 427/287, 427/466, 427/64, 385/505
• US Class Current: 427/162
• CPC Class Codes: H10K 71/135 using ink-jet printing

Abstract

A film-forming method is provided for forming a planar periodic structure having a predetermined periodicity by depositing liquid material on an object. A liquid drop supplying means is used which supplies a liquid drop at a predetermined driving period to deposit the liquid material on the object; the presence or absence of the supply of the liquid drop is controlled at each driving period in accordance with the periodicity of the planar periodic structure to be formed; and the liquid drop is supplied by controlling the liquid drop supplying means while the liquid drop supplying means is scanned at a predetermined scanning speed in a predetermined scanning direction relative to the object. A natural number times a value obtained by multiplying the driving period and the scanning speed is set to be the structural period of the planar periodic structure in the scanning direction.

Claims

1. A film-forming method for forming a planar periodic structure having a predetermined periodicity by depositing liquid material on an object, the method comprising:

providing liquid drop supplying means capable of supplying a liquid drop at a predetermined driving period to deposit the liquid material on the object;

controlling the presence or absence of the supply of the liquid drop by the liquid drop supplying means at each driving period of the driving period in accordance with the periodicity of the planar periodic structure to be formed on the object; and

supplying the liquid drop by the control of the liquid drop supplying means while the liquid drop supplying means is scanned at a predetermined scanning speed in a predetermined scanning direction relative to the object;

wherein a natural number times a value obtained by multiplying the driving period and the scanning speed is set to be the structural period of the planar periodic structure, to be formed on the object, in the scanning direction.

2. The film-forming method according to claim 1,

wherein a step of scanning the liquid drop supplying means relative to the object in the scanning direction is performed several times and an operation of feeding the liquid drop supplying means to the object in a direction intersecting the scanning direction is performed during intervals between scanning operations.

3. The film-forming method according to claim 1,

wherein the liquid drop supplying means is provided with a nozzle row including a plurality of nozzles to supply the liquid drop, and the liquid drop supplying means is scanned relative to the object in the scanning direction in a position in which an arrangement period of the nozzles in the nozzle row as seen from a direction perpendicular to the scanning direction is set to correspond to a structural period as seen from a direction perpendicular to the scanning direction of the planar periodic structure to be formed.

4. The film-forming method according to claim 3,

wherein a difference between:

a phase difference between a periodicity of the planar periodic structure in the scanning direction at a predetermined position as seen from a direction perpendicular to the scanning direction and another periodicity of the planar periodic structure in the scanning direction at another position other than the predetermined position as seen from a direction perpendicular to the scanning direction; and

a positional deviation as seen from the scanning direction between a predetermined nozzle corresponding to the predetermined position and another nozzle corresponding to the another position;

is set to 0 or a natural number times a value obtained by multiplying the driving period and the scanning speed.

5. The film-forming method according to claim 3,

wherein a time difference is provided between a liquid drop supplying time of a predetermined nozzle disposed at a predetermined position as seen from the direction perpendicular to the scanning direction and a liquid drop supplying time of another nozzle disposed at another position as seen from the direction perpendicular to the scanning direction;

and

wherein a difference between;

a phase difference between a periodicity of the planar periodic structure in the scanning direction at the predetermined position and another periodicity of the planar periodic structure in the scanning direction at another position; and

a value obtained by multiplying the time difference and the scanning speed;

is set to 0 or a natural number times a value obtained by multiplying the driving period and the scanning speed.

20. A method for manufacturing a display device comprising:

forming a plurality of pixels arranged at the planar periodic period using a film-forming method according to claim 1.

6. A method for manufacturing a color filter substrate comprising:

a film-forming step in which liquid material is supplied onto a substrate to film-form a plurality of filter elements in a planar periodic pattern having a predetermined periodicity;

wherein, in the film-forming process, liquid drop supplying means is used which is capable of supplying a liquid drop at a predetermined driving period to deposit the liquid material on the object;

the presence or absence of the supply of the liquid drop by the liquid drop supplying means is controlled at each driving period of the driving period in accordance with the periodicity of the planar periodic pattern to be formed on the object; and

the liquid drop is supplied by the control of the liquid drop supplying means while the liquid drop supplying means is scanned at a predetermined scanning speed in a predetermined scanning direction relative to the object; and

wherein a natural number times a value obtained by multiplying the driving period and the scanning speed is set to be the structural period of the planar periodic pattern, to be formed, in the scanning direction.

7. The method for manufacturing a color filter according to claim 6,

wherein a step of scanning the liquid drop supplying means relative to the object in the scanning direction is performed several times and an operation of feeding the liquid drop supplying means to the object in a direction intersecting the scanning direction is performed during intervals between scanning operations.

8. The method for manufacturing a color filter substrate according to claim 6,

wherein the liquid drop supplying means is provided with a nozzle row including a plurality of nozzles to supply the liquid drop, and the liquid drop supplying means is scanned relative to the object in the scanning direction in the position in which an arrangement period of the nozzles at the nozzle row as seen from a direction perpendicular to the scanning direction is set to correspond to a structural period as seen from a direction perpendicular to the scanning direction of the planar periodic pattern to be formed.

9. The method for manufacturing a color filter substrate according to claim 8,

wherein a difference between:

a phase difference between a periodicity of the planar periodic pattern in the scanning direction at a predetermined position as seen from a direction perpendicular to the scanning direction and another periodicity of the planar periodic pattern in the scanning direction at another position other than the predetermined position as seen from a direction perpendicular to the scanning direction; and

a positional deviation as seen from the scanning direction between a predetermined nozzle corresponding to the predetermined position and another nozzle corresponding to the another position;

is set to 0 or a natural number times a value obtained by multiplying the driving period and the scanning speed, thereby forming a film.

10. The method for manufacturing a color filter substrate according to claim 8,

wherein a time difference is provided between a liquid drop supplying time of a predetermined nozzle disposed at a predetermined position as seen from the direction perpendicular to the scanning direction and a liquid drop supplying time of another nozzle disposed at another position other than the predetermined position as seen from the direction perpendicular to the scanning direction;

and

wherein a difference between;

a phase difference between a periodicity of the planar periodic pattern in the scanning direction at the predetermined position and another periodicity of the planar periodic pattern in the scanning direction at the another position; and

a value obtained by multiplying the time difference and the scanning speed;

is set to 0 or a natural number times a value obtained by multiplying the driving period and the scanning speed, thereby forming a film.

11. The method for manufacturing a color filter substrate according to claim 6,

wherein the planar periodic pattern is obtained by arranging a plurality of colors of the filter elements in a planar periodic pattern, and the film-forming process is performed to at least one of the plurality of colors of the filter elements.

12. The method for manufacturing a color filter substrate according to claim 11,

wherein the film-forming process is performed to a blue color filter element of the filter elements.

21. A method for manufacturing a display device comprising:

forming a color filter substrate using a manufacturing method according to claim 6.

13. A method for manufacturing a substrate for an electroluminescent device comprising:

a film-forming step in which the liquid material is supplied onto the substrate to film-form a plurality of pixel regions in a planar periodic pattern having a predetermined periodicity;

wherein, in the film-forming process;

liquid drop supplying means is used which is capable of supplying a liquid drop at a predetermined driving period to deposit the liquid material on the object;

the presence or absence of the supply of the liquid drop by the liquid drop supplying means is controlled at each driving period in accordance with the periodicity of the planar periodic pattern to be formed on the object; and

the liquid drop is supplied by the control of the liquid drop supplying means while the liquid drop supplying means is scanned at a predetermined scanning speed in a predetermined scanning direction relative to the object; and

wherein a natural number times a value obtained by multiplying the driving period and the scanning speed is set to be the structural period of the planar periodic pattern, to be formed on the object, in the scanning direction.

14. The method for manufacturing a substrate for an electroluminescent device according to claim 13,

wherein a step of scanning the liquid drop supplying means relative to the object in the scanning direction is performed several times and an operation of feeding the liquid drop supplying means to the object in a direction intersecting the scanning direction is performed during intervals between scanning operations.

15. The method for manufacturing a substrate for an electroluminescent device according to claim 13,

wherein the liquid drop supplying means is provided with a nozzle row including a plurality of nozzles to supply the liquid drop, and the liquid drop supplying means is scanned relative to the object in the scanning direction in the position in which an arrangement period of the nozzles at the nozzle row as seen from a direction perpendicular to the scanning direction is set to correspond to a structural period as seen from a direction perpendicular to the scanning direction of the planar periodic pattern to be formed.

16. The method for manufacturing a substrate for an electroluminescent device according to claim 15,

wherein a difference between:

a phase difference between a periodicity of the planar periodic pattern, to be formed on the object, in the scanning direction, at a predetermined position as seen from a direction perpendicular to the scanning direction and another periodicity of the planar periodic pattern in the scanning direction at another position other than the predetermined position as seen from a direction perpendicular to the scanning direction; and

a positional deviation as seen from the scanning direction between a predetermined nozzle corresponding to the predetermined position and another nozzle corresponding to the another position;

is set to 0 or a natural number times a value obtained by multiplying the driving period and the scanning speed, thereby forming a film.

17. The method for manufacturing a substrate for an electroluminescent device according to claim 15,

wherein a time difference is provided between a liquid drop supplying time of a predetermined nozzle disposed at a predetermined position as seen from the direction perpendicular to the scanning direction and a liquid drop supplying time of another nozzle disposed at another position other than the predetermined position as seen from the direction perpendicular to the scanning direction;

and

wherein a difference between;

a phase difference between a periodicity of the planar periodic pattern in the scanning direction at the predetermined position and another periodicity of the planar periodic pattern in the scanning direction at the another position; and

a value obtained by multiplying the time difference and the scanning speed;

is set to 0 or a natural number times a value obtained by multiplying the driving period and the scanning speed, thereby forming a film.

18. The method for manufacturing a substrate for an electroluminescent device according to claim 13,

wherein the planar periodic pattern is obtained by arranging a plurality of colors of the pixel regions in a predetermined arrangement pattern, and the film-forming process is performed to at least one of the plurality of colors of the pixel regions.

19. The method for manufacturing a substrate for an electroluminescent device according to claim 18,

wherein the film-forming process is performed to a blue color pixel region.

22. A method for manufacturing a display device comprising:

forming a substrate for an electroluminescent device using a manufacturing method according to claim 13.