Display panel and production method for same

An active matrix display panel having a plurality of pixels arranged in a matrix of rows and columns, wherein

• each of the pixels is composed of a plurality of first sub-pixels emitting light of different colors,
• each of the first sub-pixels is composed of a plurality of second sub-pixels emitting light of the same color,
• each of the second sub-pixels includes:
• a first electrode;
• a second electrode above the first electrode;
• a light-emitting layer between the first electrode and the second electrode;
• and
• a pixel circuit configured to feed power to the first electrode, and the pixel circuit includes a gate line and a data line.

A method for manufacturing an active matrix display panel, the method comprising:

• preparing a substrate;
• and
• forming, on the substrate, a plurality of pixels arranged in a matrix of rows and columns, wherein
• the forming of the pixels includes
• forming, for each of the pixels, a plurality of first sub-pixels emitting light of different colors,
• the forming of the first sub-pixels includes
• forming, for each of the first sub-pixels, a plurality of second sub-pixels emitting light of the same color, and
• the forming of the second sub-pixels includes:
• forming a first electrode;
• forming a second electrode above the first electrode;
• forming a light-emitting layer between the first electrode and the second electrode;
• forming a pixel circuit configured to feed power to the first electrode;
• and
• forming a gate line and a data line for the pixel circuit.

A method for manufacturing an active matrix display panel, the method comprising:

• preparing a substrate;
• and
• forming, on the substrate, a plurality of pixels arranged in a matrix of rows and columns, wherein
• the preparing of the substrate includes:
• forming a thin-film transistor array substrate including pixel circuits arranged in a matrix of rows and columns, each of the pixel circuits including a thin-film transistor element, a gate line, and a data line;
• and
• after forming the thin-film transistor array substrate, inspecting the thin-film transistor array substrate for any display defect, and
• the forming of the pixels includes:
• when the display defect found in the inspecting of the thin-film transistor array substrate is not within an allowable range, forming pixel electrodes such that one pixel electrode is allocated to each group of pixel circuits, the number of the pixel circuits included in each group being an integer equal to or greater than two;
• forming light-emitting layers on the respective pixel electrodes;
• and
• forming, on the light-emitting layers, a common electrode to extend across the plurality of pixels.

A method for manufacturing an active matrix display panel, the method comprising:

• preparing a substrate;
• and
• forming, on the substrate, a plurality of pixels arranged in a matrix of rows and columns, wherein
• the preparing of the substrate includes:
• forming a thin-film transistor array substrate including pixel circuits arranged in a matrix of rows and columns, each of the pixel circuits including a thin-film transistor element, a gate line, and a data line;
• and
• forming an insulation film on the thin-film transistor array substrate, the insulation film having contact holes,
• the forming of the pixels includes:
• forming, on the insulation film, pixel electrodes such that one pixel electrode is allocated to each of the pixel circuits;
• inspecting the pixel electrodes for any defect;
• forming, on the insulation film, a partition wall having apertures;
• forming light-emitting layers on one or more pixel electrodes in the respective apertures;
• and
• forming, on the light-emitting layers, a common electrode to extend across the plurality of pixels, and
• in the forming of the partition wall, when the display defect found in the inspecting of the pixel electrodes is not within an allowable range, forming the apertures such that one aperture is allocated to each group of pixel electrodes, the number of the pixel electrodes included in each group being an integer equal to or greater than two.

A method for manufacturing an active matrix display panel, the method comprising:

• preparing a substrate;
• and
• forming, on the substrate, a plurality of pixels arranged in a matrix of rows and columns, wherein
• the preparing of the substrate includes:
• forming a thin-film transistor array substrate including pixel circuits arranged in a matrix of rows and columns, each of the pixel circuits including a thin-film transistor element, a gate line, and a data line;
• and
• forming an insulation film on the thin-film transistor array substrate, the insulation film having contact holes,
• the forming of the pixels includes:
• forming, on the insulation film, pixel electrodes such that one pixel electrode is allocated to each of the pixel circuits;
• forming, on the insulation film, a partition wall having apertures provided for the respective pixel electrodes;
• inspecting the pixel electrodes or the partition wall for any defect;
• forming light-emitting layers on the respective pixel electrodes in the apertures;
• and
• forming, on the light-emitting layers, a common electrode to extend across the plurality of pixels, and
• in forming of the light-emitting layers, when the defect found in the inspecting of the pixel electrodes or the partition wall is not within an allowable range, light-emitting layers emitting light of the same color are formed in apertures in the same unit, and light-emitting layers emitting light of different colors are formed in apertures in different units, each unit being composed of a plurality of adjacent apertures.