Image display element and method for manufacturing image display element

An image display element comprising:

• micro light emitting elements disposed in an array on a driving circuit substrate including a driving circuit configured to supply a current to the micro light emitting elements and cause the micro light emitting elements to emit light,
• wherein each of the micro light emitting elements emits light in a direction opposite the driving circuit substrate,
• each of the micro light emitting elements includes an excitation light emitting element configured to generate excitation light, a reflective wall surrounding the excitation light emitting element, and a transparent portion disposed inside the reflective wall,
• a sidewall of the reflective wall is not in contact with a sidewall of the excitation light emitting element and is inclined to open with respect to a light emission direction of each of the micro light emitting elements,
• the transparent portion covers all surfaces of the excitation light emitting element excluding a surface of the excitation light emitting element located closer to the driving circuit substrate, and
• the excitation light emitting element includes a main body including a compound semiconductor, a metal electrode disposed on a first side of the main body relatively closer to the driving circuit substrate, and a transparent electrode disposed on a second side of the main body relatively farther from the driving circuit substrate,
• wherein a light blocking material having insulation properties is disposed at a bottom portion of the reflective wall, and
• the light blocking material is in contact with the metal electrode and the reflective wall.

An image display element comprising:

• micro light emitting elements disposed in an array on a driving circuit substrate including a driving circuit configured to supply a current to the micro light emitting elements and cause the micro light emitting elements to emit light,
• wherein each of the micro light emitting elements emits light in a direction opposite the driving circuit substrate,
• each of the micro light emitting elements includes an excitation light emitting element configured to generate excitation light, a reflective wall surrounding the excitation light emitting element, and a wavelength conversion material disposed inside the reflective wall,
• a sidewall of the reflective wall is not in contact with a sidewall of the excitation light emitting element and is inclined to open with respect to a light emission direction of each of the micro light emitting elements,
• the wavelength conversion material absorbs the excitation light and emits light having a wavelength longer than a wavelength of the excitation light,
• the wavelength conversion material covers all surfaces of the excitation light emitting element excluding a surface of the excitation light emitting element closer to the driving circuit substrate, and
• the excitation light emitting element includes a main body including a compound semiconductor, a metal electrode disposed on a first side of the main body relatively closer to the driving circuit substrate, and a transparent electrode disposed on a second side of the main body relatively farther from the driving circuit substrate,
• wherein a light emission layer included in the main body is disposed in a region of the main body close to the second side,
• a first drive electrode and a second drive electrode are provided on the driving circuit substrate, wherein
• the first drive electrode is provided between the drive circuit substrate and the metal electrode and is electrically connected to the metal electrode, and
• the second drive electrode is provided between the drive circuit substrate and the reflective wall and is electrically connected to the transparent electrode.

An image display element comprising:

• micro light emitting elements disposed in an array on a driving circuit substrate including a driving circuit configured to supply a current to the micro light emitting elements and cause the micro light emitting elements to emit light,
• wherein each of the micro light emitting elements emits light in a direction opposite the driving circuit substrate,
• each of the micro light emitting elements includes an excitation light emitting element configured to generate excitation light, a reflective wall surrounding the excitation light emitting element, and a transparent portion disposed inside the reflective wall,
• a sidewall of the reflective wall is not in contact with a sidewall of the excitation light emitting element and is inclined to open with respect to a light emission direction of each of the micro light emitting elements,
• the transparent portion covers all surfaces of the excitation light emitting element excluding a surface of the excitation light emitting element located closer to the driving circuit substrate, and
• the excitation light emitting element includes a main body including a compound semiconductor, a metal electrode disposed on a first side of the main body relatively closer to the driving circuit substrate, and a transparent electrode disposed on a second side of the main body relatively farther from the driving circuit substrate,
• wherein a light emission layer included in the main body is disposed in a region of the main body close to the second side,
• a first drive electrode and a second drive electrode are provided on the driving circuit substrate, wherein
• the first drive electrode is provided between the drive circuit substrate and the metal electrode and is electrically connected to the metal electrode, and
• the second drive electrode is provided between the drive circuit substrate and the reflective wall and is electrically connected to the transparent electrode.