Display device having through hole at light blocking region and method of providing the same

A display device comprising:

• a substrate comprising a light transmission region at which light is emitted from the display device, and a light blocking region which is adjacent to the light transmission region;
• a first color filter pattern which is on the substrate and selectively transmits light of a first color;
• a second color filter pattern which is on the substrate and selectively transmits light of a second color different from the first color;
• a third color filter pattern which is on the substrate and selectively transmits light of a third color different from the first color and the second color,
• a bank layer facing the substrate with the first color filter pattern therebetween;
• in the light transmission region:
• a first opening defined in the bank layer;
• and
• a wavelength control pattern in the first opening of the bank layer;
• and
• in the light blocking region:
• a second opening defined in the bank layer and spaced apart from the first opening;
• and
• a filling structure in the second opening of the bank layer,
• wherein
• each of the first opening and the second opening corresponds to the first color filter pattern, and
• at a same location within the light blocking region, the first color filter pattern, the second color filter pattern and the third color filter pattern overlap each other.

A display device comprising:

• a substrate comprising a light transmission region at which light is emitted from the display device, and a light blocking region which is adjacent to the light transmission region;
• a first color filter pattern which is on the substrate and selectively transmits light of a first color;
• a bank layer facing the substrate with the first color filter pattern therebetween;
• in the light transmission region:
• a first opening defined in the bank layer;
• and
• a wavelength control pattern in the first opening of the bank layer;
• in the light blocking region:
• a second opening defined in the bank layer and spaced apart from the first opening;
• and
• a filling structure in the second opening of the bank layer;
• and
• a low refractive film in both of the light transmission region and the light blocking region, the low refractive film between the first color filter pattern and the bank layer and between the first color filter pattern and the wavelength control pattern,
• wherein
• each of the first opening and the second opening corresponds to the first color filter pattern,
• each of the low refractive film and the wavelength control pattern has a refractive index,
• the refractive index of the low refractive film is smaller than the refractive index of the wavelength control pattern, and
• the low refractive film includes an organic material.

A display device comprising:

• a first display substrate;
• and
• a second display substrate facing the first display substrate,
• wherein
• the first display substrate includes:
• a first substrate;
• a first electrode on the first substrate;
• a pixel defining layer on the first electrode;
• an opening defined in the pixel defining layer which exposes the first electrode to outside the pixel defining layer;
• a light emitting layer in the opening of the pixel defining layer and on the first electrode which is exposed to outside the pixel defining layer, and
• a second electrode facing the first electrode with the light emitting layer therebetween, and
• the second display substrate includes:
• in order in a direction toward the first display substrate,
• a second substrate;
• a color filter layer;
• an intermediate layer;
• and
• a bank layer defining both an opening, and a through hole which is spaced apart from the opening;
• a wavelength conversion pattern in the opening of the bank layer;
• and
• a spacer in the through hole of the bank layer.

A method of providing a display device, comprising:

• providing a substrate comprising a light transmission region at which light is emitted from the display device, and a light blocking region which is adjacent to the light transmission region;
• providing a color filter layer on the substrate;
• providing a bank layer facing the substrate with the color filter layer therebetween;
• providing in the light transmission region:
• a first opening defined in the bank layer;
• and
• a color control layer in the first opening, through an inkjet printing process, the color control layer having a thickness;
• and
• providing in the light blocking region:
• a layer between the bank layer and the color filter layer, and
• a second opening which is defined in the bank layer and spaced apart from the first opening, the second opening having a depth and exposing a portion of the layer between the bank layer and the color filter layer to outside the bank layer,
• wherein
• the providing of the color control layer in the first opening comprises:
• measuring the depth of the second opening with reference to the portion of the layer which is exposed to outside the bank layer, to define a measured depth, and
• providing the thickness based on the measured depth of the second opening, and each of the first opening and the second opening corresponds to the color filter layer.

A method of providing a display device, comprising:

• providing a substrate comprising a light transmission region at which light is emitted from the display device, and a light blocking region which is adjacent to the light transmission region;
• providing a color filter layer on the substrate;
• providing a bank layer facing the substrate with the color filter layer therebetween;
• providing in the light transmission region:
• a first opening defined in the bank layer;
• and
• a color control layer in the first opening, through an inkjet printing process, the color control layer having a thickness;
• providing in the light blocking region, a second opening defined in the bank layer and spaced apart from the first opening, the second opening having a depth;
• and
• after the providing of the color filter layer, providing a low refractive film in both of the light transmission region and the light blocking region,
• wherein
• the providing of the color control layer in the first opening comprises providing the thickness based on the depth of the second opening,
• each of the first opening and the second opening corresponds to the color filter layer,
• the low refractive film is between the color filter layer and the bank layer and between the color filter layer and the color control layer, and
• the low refractive film includes an organic material.