Resist composition for bulkhead formation, bulkhead of EL display device and EL display device

• US 20080166657A1
• Filed: 03/06/2008
• Published: 07/10/2008
• Est. Priority Date: 11/14/2003
• Status: Abandoned Application

• Current Assignee: Kiyoshi Uchikawa, Yasuaki Sugimoto
• Original Assignee: Kiyoshi Uchikawa, Yasuaki Sugimoto
• Inventors: Uchikawa, Kiyoshi, Sugimoto, Yasuaki
• Application Number:
  US12/073,521
• Publication Number:
  US 20080166657A1
• Time in Patent Office: Days
• US Class Current: 430/270.1
• CPC Class Codes: H10K 59/122 Pixel-defining structures or layers, e.g. banks
• CPC Class Codes: H10K 59/173 comprising banks or shadow masks
• CPC Class Codes: H10K 71/164 using vacuum deposition

Abstract

Provided are a resist composition for separator formation which can be applied for forming separators in the form including a forward taper shape and a reverse taper shape and can be widely used for production of various organic EL displays, and a separator and an EL display device obtained from this resist composition. A composition containing an alkali-soluble resin, an acid generator, a cross-linking agent and a separator pattern shape controlling agent is used as the resist composition for separator formation of an EL display device and the like. The separator pattern shape controlling agent is preferably constituted of a forward taper controlling agent and a reverse taper controlling agent, and these controlling agents can be composed of an amine and an organic acid.

Claims

1-6. -6. (canceled)

7. A method for adjusting a separator to be formed such that it is possible to control a side surface inclination angle of the separator at any angle in a range of 5 degrees to 130 degrees, in terms of an internal angle, using a separator-forming resist composition for forming a taper-shaped separator comprising an alkali-soluble resin, an acid-generator, a cross-linking agent, and at least one compound selected from an organic acid and an amine, by adjusting the ratio of the organic acid and the amine in a range of 0.06% to 0.6% by weight for the organic acid and 0.1% to 1% by weight for the amine.

8. The method according to claim 7, wherein the alkali-soluble resin is at least one resin selected from a novolac resin and a hydroxystyrene resin.

9. The method according to claim 8, wherein the weight ratio of novolak resin to hydroxystyrene resin is from 0:

100 to 70;

30.

10. The method according to claim 7, wherein the acid-generator is an oxime group containing acid-generator.

11. A separator of an EL display device formed by the method of claim 7.

12. An EL display device having the separator according to claim 11.