Side-Chain Polyimides as Binder Polymers for Photolithographic Patterning of a Black Pixel Define Layer for Organic Light Emitting Diode

Table 2

Formulation of black photoresists and thermal stability of a black PDL pattern [14].

Components/photoresist samples		PT-0	PT-1	PT-2	PT-3
Photoinitiators	Irgacure 754	1	1	1	1
	Irgacure TPO	6	6	6	6
Photosensitizer	Darocure ITX	2	2	2	2
Binder polymer (30 wt% in PGMEA)	SR-6300	35
	PSI-2		35
	PSEI-1			35
	PSEA-2				35
Multifunctional monomer	PETA	8	8	8	8
Polyimide thermal stabilizer (30 wt% in PGMEA)	MY-10	10	10	10	10
Black millbase (23 wt% in PGMEA)	LT-1 (SKC htm Co., Korea)	35	35	35	35
Solvent	PGMEA	5	5	5	5
Total	wt%	100	100	100	100
Thermal stability	1 wt% loss temp. (°C, TGA)	282	—	—	303