Organic electroluminescent panel and production method thereof, and color filter substrate and production method thereof

A production method of an organic electroluminescent panel comprising:

• a bank;
• the production method comprising:
• patterning by a photolitho process using different exposure amounts of a photosensitive resin-containing material to form the bank such that the bank includes:
• a first bank region including a first film thickness;
• and
• a second bank region including a second film thickness that is larger than the first film thickness;
• wherein
• the first bank and second bank regions are arranged to intersect with each other only at a limited portion thereof such that remaining portions of the first and second bank regions do not overlap or intersect with each other;
• and
• only the first bank region including the first film thickness that is less than the second film thickness is present at the limited portion where the first and second bank regions intersect.

A color filter substrate comprising:

• a bank including at least two bank regions including:
• a first bank region including a first film thickness;
• and
• a second bank region including a second film thickness that is larger than the first film thickness;
• a colored layer region surrounded by the at least two bank regions;
• wherein
• the first bank and second bank regions are arranged to intersect with each other only at a limited portion thereof such that remaining portions of the first and second bank regions do not overlap or intersect with each other;
• and
• only the first bank region including the first film thickness that is less than the second film thickness is present at the limited portion where the first and second bank regions intersect.

A production method of a color filter substrate comprising:

• a bank;
• the production method comprising:
• patterning by a photolitho process using different exposure amounts of a photosensitive resin-containing material to form the bank such that the bank includes:
• a first bank region including a first film thickness;
• and
• a second bank region including a second film thickness that is larger than the first film thickness;
• wherein
• the first bank and second bank regions are arranged to intersect with each other only at a limited portion thereof such that remaining portions of the first and second bank regions do not overlap or intersect with each other;
• and
• only the first bank region including the first film thickness that is less than the second film thickness is present at the limited portion where the first and second bank regions intersect.

An organic electroluminescent panel comprising:

• at least two bank regions including a first bank region and a second bank region, the first bank region including a thickness that is less than that of the second bank region;
• and
• an organic film region surrounded by the at least two bank regions;
• wherein
• the first and second bank regions are arranged such that a cross-section taken along a length of the second bank region includes portions of the first bank region and portions of the second bank region adjacent to each other.

An organic electroluminescent panel comprising:

• at least two bank regions including a first bank region and a second bank region, the first bank region including a thickness that is less than that of the second bank region;
• and
• an organic film region surrounded by the at least two bank regions;
• wherein
• portions of the second bank region are separated from each other by portions of the first bank region along a length of the second bank region such that the portions of the first bank region separating the portions of the second bank region are located at intersections between the first and second bank regions.