Organic EL device with filter and method of repairing same
View Patent ↗There are provided an organic electro-luminescence device with filters and a method for repairing the same which are capable of reducing variations in conditions for leak-light transmission during leak-light detection and conditions for transmission of laser light used for repairing, depending on respective types of filters. An organic electro-luminescence device with a filter includes a first electrode in a side for extraction of light to outside; a second electrode placed oppositely to the first electrode; an electro-luminescence layer placed between the first electrode and the second electrode; a filter provided on a surface of the first electrode, the surface of the first electrode being opposite to another surface of the first electrode facing to the electro-luminescence layer, wherein the filter is adapted to transmit, therethrough, light in a certain-wavelength range out of the range of 400 nm to 700 nm; and a certain-wavelength absorption film placed between the filter and the electro-luminescence layer, wherein the certain-wavelength absorption film has a transmittance for light in the certain-wavelength range out of the range of 400 nm to 700 nm lower than its transmittance for light with wavelengths of 400 nm to 700 nm, wherein the certain-wavelength absorption film is adapted to absorb light in the certain-wavelength range.
1. A method of repairing an organic electro-luminescence device with a filter, the organic electro-luminescence device including a first electrode in a side for extraction of light to outside, a second electrode placed oppositely to the first electrode, an electro-luminescence layer placed between the first electrode and the second electrode, a filter provided on a surface of the first electrode, the surface of the first electrode being opposite to another surface of the first electrode facing to the electro-luminescence layer, wherein the filter is adapted to transmit, therethrough, light in a certain-wavelength range out of the range of 400 nm to 700 nm, and a certain-wavelength absorption film placed between the filter and the electro-luminescence layer, wherein the certain-wavelength absorption film has a transmittance for light in the certain-wavelength range out of the range of 400 nm to 700 nm lower than its transmittance for light with wavelengths of 400 to 700 nm, wherein the certain-wavelength absorption film is adapted to absorb light in the certain-wavelength range to generate heat, the method comprising:
detecting a portion where leak light is generated from the electro-luminescence layer as a result of application of a voltage between the first electrode and the second electrode; and
directing, to the detected leak-light generating portion, laser light with a wavelength in the certain-wavelength range such that the certain-wavelength absorption film is heated by the directed laser light to repair the leak-light generating portion.
2. The method of repairing an organic electro-luminescence device with a filter according to claim 1 , wherein the certain-wavelength absorption film is provided between the filter and the first electrode.
3. The method of repairing an organic electro-luminescence device with a filter according to claim 1 , wherein the certain-wavelength absorption film is a film provided as a coating film applied on the surface of the first electrode.
4. The method of repairing an organic electro-luminescence device with a filter according to claim 1 , wherein the certain-wavelength absorption film is adapted to transmit, therethrough, leak light generated as a result of application of a voltage between the first electrode and the second electrode.