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US 7,443,093 B2Granted
Light-emitting display device provided with light-emitting portions having varying areas
AssigneeSamsung Electronics Co., Ltd.
InventorsWang Jianpu, Jin-Koo Chung
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Abstract
A display device for increasing a lifetime includes a base substrate having a plurality of pixel regions, a plurality of first electrodes formed on the pixel regions, a light emitting layer including first, second and third light emitting portions to generate first, second and third lights, a second electrode that is electrically coupled to the light emitting layer. At least two of the first, second and third light emitting portions have different areas from each other. The areas of the light emitting portions are determined by reference lifetimes. Therefore, the lifetime for the display device is increased.
Claims24
A display device comprising:
- a base substrate having a plurality of pixel regions;
- a plurality of first electrodes formed on the pixel regions, respectively;
- a light emitting layer on the first electrodes, the light emitting layer including first, second and third light emitting portions to generate a red light, a green light and a blue light, respectively, wherein the first light emitting portion has an area smaller than an area of the third light emitting portion which is smaller than an area of the second light emitting portion;
- and
- a second electrode that is electrically coupled to the first, second and third light emitting portions.
2 more elements
A display device comprising:
- a base substrate having first, second and third pixel regions;
- a plurality of first electrodes formed on the first, second and third pixel regions, respectively;
- a light emitting layer on the first electrodes, the light emitting layer including a first light emitting portion on the first pixel region, a second light emitting portion on the second pixel region, and a third light emitting portion on the third pixel region to generate a red light, a green light and a blue light respectively, a ratio of each of the areas of the first, second and third pixel regions to each of areas of the first, second and third light emitting portions being uniform, wherein the first pixel region has an area smaller than an area of the third pixel region which is smaller than an area of the second pixel region;
- and
- a second electrode that is electrically coupled to the first, second and third light emitting portions.
2 more elements
A display device comprising:
- a base substrate including a first pixel region that has a first area, a second pixel region that has a second area larger than the first area and a third pixel region that has a third area larger than the first area and smaller than the second area;
- a plurality of first electrodes formed on the first, second and third pixel regions, respectively;
- a light emitting layer on the first electrodes, the light emitting layer including first, second and third light emitting portions formed on the first, second and third pixel regions, respectively, the first, second and third light emitting portions having a fourth area, a fifth area larger than the fourth area and a sixth area larger than the fourth area and smaller than the fifth area and generating red light, a green light and a blue light, respectively;
- and
- a second electrode that is electrically coupled to the first, second and third light emitting portions.
2 more elements
A display device comprising:
- a base substrate having a first pixel region, a second pixel region, a third pixel region, and a fourth pixel region;
- a plurality of first electrodes formed on the pixel regions, respectively;
- a light emitting layer including a first light emitting portion formed on the first pixel region, a second light emitting portion formed on the second pixel region, a third light emitting portion formed on the third pixel region, and a fourth light emitting portion formed on the fourth pixel region, the first, second, third and fourth light emitting portions generating red, green, blue and white lights, respectively, wherein the first, second and third light emitting portions respectively have a first area, a second area larger than the first area, and a third area larger than the first area and smaller than the second area;
- and
- a second electrode that is electrically coupled to the light emitting layer.
2 more elements
A method of manufacturing a display device comprising:
- forming first electrodes in a plurality of pixel regions on a base substrate;
- forming a red light emitting portion having a first area, a green light emitting portion having a second area larger than the first area and a blue light emitting portion having a third area larger than the first area and smaller than the second area on the first electrodes, respectively, wherein the red, green and blue light emitting portions generate a red light, a green light and a blue light, respectively;
- and
- forming a second electrode electrically coupled to the red, green and blue light emitting portions.
1 more element
Dependencies are inferred from the claim text.