Display device
First Claim
Patent Images
1. A display device including a display region provided with a plurality of pixels including a plurality of sub pixels, the display device comprising:
- a plurality of light emitting elements each including a first electrode, a functional layer including a light emitting layer and a second electrode layered one on another in this order, with at least the first electrode being provided for each of the sub pixels;
a first bank configured to cover a peripheral portion of the first electrode; and
a sealing film including a first inorganic layer, an organic layer and a second inorganic layer layered one on another in this order from the second electrode side, and being configured to seal the plurality of light emitting elements,wherein the first bank is intermittently provided with a first high bank part and a first low bank part having a height less than a height of the first high bank part,a second bank covered with the sealing film and surrounding the display region is provided outside of the display region, andthe second bank includes a second high bank part having a height greater than the height of the first low bank part, anddensity of the second high bank part per area corresponding to one pixel in a mounting region of the second bank is higher than density of the first high bank part per pixel in the display region serving as a mounting region of the first bank.
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Abstract
A bank (BK1b) and a bank (BK1a) having a height less than a height of the bank (BK1b) are intermittently provided on a bank (BK1) covering a peripheral portion of each first electrode (21) of a light emitting element.
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Citations
20 Claims
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1. A display device including a display region provided with a plurality of pixels including a plurality of sub pixels, the display device comprising:
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a plurality of light emitting elements each including a first electrode, a functional layer including a light emitting layer and a second electrode layered one on another in this order, with at least the first electrode being provided for each of the sub pixels; a first bank configured to cover a peripheral portion of the first electrode; and a sealing film including a first inorganic layer, an organic layer and a second inorganic layer layered one on another in this order from the second electrode side, and being configured to seal the plurality of light emitting elements, wherein the first bank is intermittently provided with a first high bank part and a first low bank part having a height less than a height of the first high bank part, a second bank covered with the sealing film and surrounding the display region is provided outside of the display region, and the second bank includes a second high bank part having a height greater than the height of the first low bank part, and density of the second high bank part per area corresponding to one pixel in a mounting region of the second bank is higher than density of the first high bank part per pixel in the display region serving as a mounting region of the first bank. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A display device including a display region provided with a plurality of pixels including a plurality of sub pixels, the display device comprising:
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a plurality of light emitting elements each including a first electrode, a functional layer including a light emitting layer and a second electrode layered one on another in this order, with at least the first electrode being provided for each of the sub pixels; a first bank configured to cover a peripheral portion of the first electrode; and a sealing film including a first inorganic layer, an organic layer and a second inorganic layer layered one on another in this order from the second electrode side, and being configured to seal the plurality of light emitting elements, wherein the first bank includes a first step shaped bank part including a plurality of steps, the functional layer and the second electrode are located below a lower step of the first step shaped bank part between the first step shaped bank part and a bank part adjacent to the first step shaped bank part in the first bank, the first inorganic layer is provided with irregularities derived from the plurality of steps of the first step shaped bank part, the first step shaped bank includes a lower step bank and an upper step bank layered on the lower step bank, and a plurality of columns of the upper step banks is provided on the lower step bank. - View Dependent Claims (14, 15, 16, 17)
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18. A display device including a display region provided with a plurality of pixels including a plurality of sub pixels, the display device comprising:
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a plurality of light emitting elements each including a first electrode, a functional layer including a light emitting layer and a second electrode layered one on another in this order, with at least the first electrode being provided for each of the sub pixels; a first bank configured to cover a peripheral portion of the first electrode; and a sealing film including a first inorganic layer, an organic layer and a second inorganic layer layered one on another in this order from the second electrode side, and being configured to seal the plurality of light emitting elements, wherein the first bank is intermittently provided with a first high bank part and a first low bank part having a height less than a height of the first high bank part a second bank covered with the sealing film and surrounding the display region is provided outside of the display region, and the second bank includes a second high bank part having a height greater than the height of the first low bank part, and a pitch between the second high bank parts adjacent to each other is less than a pitch between the first high bank parts adjacent to each other. - View Dependent Claims (19, 20)
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Specification