Display apparatus

Abstract

A display apparatus includes an organic light-emitting device (OLED) substrate, a color control layer; a first optical layer to which the generated light of the organic light-emitting substrate is incident and from which wavelength range light is provided to the color control layer; and a second optical layer to which the wavelength-converted light of the color control layer is incident and from which display light is provided for displaying an image The first optical layer partially transmits and partially reflects light of a first wavelength range, and reflects light of a second wavelength range and light of a third wavelength range each different from the first wavelength range. The second optical layer reflects light of the first wavelength range, and transmits each of light of the second wavelength range and light of the third wavelength range.

What is claimed is: 
     
         1 . A display apparatus comprising:
 an organic light-emitting device substrate which generates a light;   a color control layer which wavelength-converts light incident thereto;   a first optical layer to which the generated light of the organic light-emitting device substrate is incident and from which wavelength range light is provided to the color control layer; and   a second optical layer to which the wavelength-converted light of the color control layer is incident and from which display light is provided for displaying an image,   wherein   the first optical layer partially transmits and partially reflects light of a first wavelength range, and reflects light of a second wavelength range and light of a third wavelength range each different from the first wavelength range, and   the second optical layer reflects light of the first wavelength range, and transmits each of light of the second wavelength range and light of the third wavelength range.   
     
     
         2 . The display apparatus of  claim 1 , wherein
 the organic light-emitting device substrate generates a blue light, and   the color control layer which wavelength-converts the light incident thereto comprises:
 a red pixel area comprising a first quantum dot which converts the blue light incident thereto to red color light, 
 a green pixel area comprising a second quantum dot which converts the blue light incident thereto to green color light, and 
 a blue pixel area which transmits the blue light incident thereto. 
   
     
     
         3 . The display apparatus of  claim 1 , wherein
 the color control layer which wavelength-converts the light incident thereto comprises a red pixel area, a green pixel area and a blue pixel area,   the first optical layer from which the wavelength range light is provided to the color control layer is disposed facing each of the red pixel area, the green pixel area and the blue pixel area of the color control layer, and   the second optical layer to which the wavelength-converted light of the color control layer is incident is disposed facing each of the red pixel area and the green pixel area of the color control layer and is excluded at the blue pixel area thereof.   
     
     
         4 . The display apparatus of  claim 1 , wherein
 the light of the first wavelength range has a central wavelength of about 420 nanometers to about 480 nanometers,   the light of the second wavelength range has a central wavelength of about 500 nanometers to about 550 nanometers, and   the light of the third wavelength range has a central wavelength of about 600 nanometers to about 650 nanometers.   
     
     
         5 . The display apparatus of  claim 1 , wherein
 the first optical layer comprises a first dichroic filter which partially transmits and partially reflects a blue light, and reflects a green light and a red light, and   the second optical layer comprises a second dichroic filter which reflects the blue light, and transmits the green light and the red light.   
     
     
         6 . The display apparatus of  claim 1 , wherein the first optical layer has a reflectance of about 30% to about 70% with respect to the light of the first wavelength range. 
     
     
         7 . The display apparatus of  claim 1 , wherein the first optical layer has a transmittance of about 30% to about 70% with respect to the light of the first wavelength range. 
     
     
         8 . The display apparatus of  claim 1 , wherein
 at least one of the first optical layer and the second optical layer includes a first material layer having a first refractive index and a second material layer having a second refractive index which is alternately and repeatedly stacked with the first material layer,   the first material layer comprises any one of magnesium fluoride, thorium fluoride, silicon dioxide, aluminum oxide, sodium aluminum fluoride, cryolite and epoxy, and   the second material layer comprises any one of tantalum pentoxide, niobium pentoxide, zinc sulfide, zinc selenide, hafnium dioxide, zirconium dioxide and titanium dioxide.   
     
     
         9 . The display apparatus of  claim 1 , wherein
 the organic light-emitting device substrate comprises a first electrode, a second electrode, and an organic emission layer which is between the first and second electrodes and with which the light is generated,   in order are disposed the first electrode, the organic emission layer, the second electrode and the first optical layer, and   the first electrode, the first optical layer and the organic emission layer form a resonance cavity structure at which the generated light resonates between the first electrode and the first optical layer to be perpendicularly provided toward the color control layer.   
     
     
         10 . The display apparatus of  claim 1 , wherein the second optical layer comprises an anti-glare processed emitting surface through which the display light is provided from the second optical layer. 
     
     
         11 . The display apparatus of  claim 1 , wherein the organic light-emitting device substrate comprises a plurality of pixel areas at which the light is generated,
 further comprising a thin film transistor layer with which the pixel areas of the organic light-emitting device substrate are controlled to generate the light, the thin film transistor layer disposed between the organic light-emitting device substrate and the color control layer.   
     
     
         12 . A display apparatus comprising:
 an organic light-emitting device substrate which generates a light, comprising a first electrode, a second electrode, and an organic emission layer between the first and second electrodes;   a color control layer which wavelength-converts light incident thereto;   a first optical layer to which the generated light of the organic light-emitting device is incident and from which wavelength range light is provided to the color control layer; and   a second optical layer to which the wavelength-converted light of the color control layer is incident and from which display light is provided for displaying an image, the second optical layer having transmission characteristics different from the first optical layer and reflection characteristics different from the first optical layer,   wherein the first electrode, the organic emission layer and the first optical layer are disposed in order to form a resonance cavity structure at which the generated light resonates between the first electrode and the first optical layer to be perpendicularly provided toward the color control layer.   
     
     
         13 . The display apparatus of  claim 12 , wherein
 the first optical layer partially transmits and partially reflects light of a first wavelength range, and reflects light of a second wavelength range and light of a third wavelength range each different from the first wavelength range, and   the second optical layer reflects light of the first wavelength range and transmits each of light of the second wavelength range and light of the third wavelength range.   
     
     
         14 . The display apparatus of  claim 12 , wherein among the generated light of the organic light-emitting layer, the first optical layer partially transmits and partially reflects light of a first wavelength range, and has a reflectance of about 30% to about 70% with respect to the light of the first wavelength range. 
     
     
         15 . The display apparatus of  claim 12 , wherein
 the first optical layer has characteristics of a short pass dichroic filter which transmits light of a wavelength range smaller than a wavelength range of light transmitted by the second optical layer, and   the second optical layer has characteristics of a long pass dichroic filter which transmits light of a wavelength range larger than a wavelength range of light transmitted by the first optical layer.   
     
     
         16 . The display apparatus of  claim 12 , wherein
 the organic light-emitting device substrate generates a blue light, and   the color control layer which wavelength-converts the light incident thereto comprises:
 a red pixel area comprising a first quantum dot which converts the blue light incident thereto to red color light, 
   a green pixel area comprising a second quantum dot which converts the blue light incident thereto to green color light, and   a blue pixel area which transmits the blue light incident thereto.   
     
     
         17 . The display apparatus of  claim 12 , wherein the organic light-emitting device substrate comprising the organic emission layer between the first and second electrodes is a bottom-surface emission type device. 
     
     
         18 . A method of displaying an image by a display apparatus, the method comprising:
 providing an incident light from a light-generating member to a color control layer which wavelength-converts light incident thereto, the providing the incident light comprising:
 providing the incident light from the light-generating member to a first optical layer which partially transmits and partially reflects light of a first wavelength range, and reflects light of a second wavelength range and light of a third wavelength range each different from the first wavelength range, and 
 providing the transmitted light of the first optical layer to the color control layer which wavelength-converts the light incident thereto; 
   providing the wavelength-converted light from the color control layer to a second optical layer which reflects light of the first wavelength range, and transmits each of light of the second wavelength range and light of the third wavelength range; and   providing the transmitted light of the second optical layer to outside the display apparatus to display the image,   wherein the providing of the incident light from the light-generating member to the color control layer comprises:
 providing the light-generating member comprising a first electrode, a second electrode, and an organic emission layer which is disposed between the first and second electrodes and with which the light is generated, and 
 disposing in order the first electrode, the organic emission layer and the first optical layer, to form a resonance cavity structure at which the incident light resonates between the first electrode and the first optical layer to be perpendicularly emitted toward the color control layer.