Color light emitting display device

A color light emitting display device, comprising:

• a plurality of emissive regions corresponding to a plurality of color components, wherein
• the plurality of emissive regions comprises:
• a plurality of emissive elements each having an emissive element layer between two electrodes and which emit light of the same color, and
• a plurality of color modifying elements provided on a side of the device closer to a side to be viewed than the emissive element to correspond to at least some of the plurality of emissive elements, for emitting light having an emission spectrum which is at least partially different from an emission spectrum of incident light;
• light emission from the plurality of emissive elements is viewed, in the emissive regions corresponding to the plurality of color modifying elements, through the corresponding color modifying element and at least one layer which absorbs at least a portion of incident light;
• and
• the areas of the plurality of emissive regions correspond to ratios of modification efficiencies corresponding to luminance of incident light and luminance of emitted light in the color modifying element and transmission efficiencies of the at least one layer absorbing at least a portion of the incident light, among different color components of the plurality of color components, and to a required luminance for each color component necessary for white display.

A color display device having a first emissive region and a second emissive region associated with different color components, the color display device comprising:

• a plurality of emissive elements each having an emissive element layer between two electrodes and which emit light of the same color, and
• a first color modifying element and a second modifying element provided on a side of the device closer to a side to be viewed than the emissive element and corresponding to at least some of the plurality of emissive element, for emitting light of an emission spectrum which is at least partially different from an emission spectrum of the incident light, the first and second color modifying element emitting light of different colors, wherein
• in the first emissive region, emission light from the emissive element is viewed through the first color modifying element;
• in the second emissive region, emission light from the emissive element is viewed through the second color modifying element;
• a modification efficiency corresponding to a ratio of light emitted from the first color modifying element with respect to light incident on the first color modifying element is higher than a modification efficiency corresponding to a ratio of light emitted from the second color modifying element with respect to light incident on the second color modifying element, and
• an area of the first emissive region is smaller than an area of the second emissive region.

A color display device having a first emissive region and a second emissive region associated with different color components, the color display device comprising:

• a plurality of emissive elements each having an emissive element layer between two electrodes and which emit light of the same color, and
• a first color modifying element and a second color modifying element provided on a side of the device closer to the side to be viewed than the emissive element and corresponding to at least some of the plurality of emissive elements, for emitting light of an emission spectrum which is at least partially different from an emission spectrum of the incident light, the first and second color modifying element emitting light of different colors, wherein
• in the first emissive region, emission light from the emissive element is viewed through the first color modifying element;
• in the second emissive region, emission light from the emissive element is viewed through the second color modifying element;
• and
• when areas of the first and second emissive regions are S1 and S2, luminance of incident light to the first and second color modifying elements are L1 and L2, transmission efficiencies of the first and second color modifying elements are TE1 and TE2, and luminance of a first color component required in the first emissive region and luminance of a second color component required in the second emissive region for realizing a predetermined color by addition of colors are a1 and a2, the condition
• S1:S2=a1/(L1·TE1):a2/(L2·TE2)
• is satisfied.

A color display device having a first emissive region and a second emissive region associated with different color components, the color display device comprising:

• a plurality of emissive elements each having an emissive element layer between two electrodes and which emit light of the same color;
• and
• a first color modifying element and a second color modifying element provided on a side of the device closer to the side to be viewed than the emissive element and corresponding to at least some of the plurality of emissive elements for emitting light of an emission spectrum which is at least partially different from an emission spectrum of the incident light, the first and second color modifying elements emitting light of different colors, wherein
• in the first emissive region, light emission from the emissive element is viewed through the first color modifying element;
• in the second emissive region, light emission from the emissive element is viewed through the second color modifying element;
• and
• when areas of the first and second emissive regions are S1 and S2, luminance of incident light to the first and second color modifying elements are L1 and L2, transmission efficiencies of the first and second color modifying elements are TE1 and TE2, luminance of the first color component required in the first emissive region and luminance of the second color component required in the second emissive region for realizing a predetermined color by addition of colors are a1 and a2, and luminance halflife of the first color component in the first emissive region and luminance halflife of the second color component in the second emissive regions when the emissive elements in the first and second emissive regions are driven by a current having the same current density are T1 and T2, the condition,
• S1:S2=a1/(L1·TE1·T1):a2/(L2·TE2·T2)
• is satisfied.

A color display device comprising:

• a plurality of emissive regions corresponding to a plurality of color components, wherein
• the plurality of emissive regions comprises:
• a plurality of emissive elements each having an emissive element layer between two electrodes and which emit light of the same color;
• a plurality of color modifying elements provided at a side of the device closer to the side to be viewed than the emissive element and corresponding to at least some of the plurality of emissive elements, for emitting light having an emission spectrum which is at least partially different from an emission spectrum of incident light, wherein
• in emissive regions to which the plurality of color modifying elements correspond, light emission from the plurality of emissive elements is viewed through the corresponding color modifying element;
• and
• areas of the plurality of emissive regions correspond to ratios of modification efficiencies corresponding to luminance of incident light and luminance of emitted light in the color modifying element among different color components of the plurality of color components and to luminance required for each color component necessary for realizing a predetermined color represented by addition of colors.