Display apparatus for controlling optical transmissivity

摘要

A display apparatus includes a transparent display device, a first polarizer on a first surface of the transparent display device, a first retarder between the first polarizer and the first surface of the transparent display device, a second polarizer on a second surface of the transparent display device opposite the first surface, and a conversion retarder between the second polarizer and the second surface of the transparent display device, the conversion retarder being configured to delay a wavelength of the external light within a range from a first phase to a second phase and to transmit the wavelength-delayed light therethrough when power is supplied to the conversion retarder.

主权项

1. A display apparatus for controlling optical transmissivity, the display apparatus comprising:
a transparent display device, the device having a pixel region for emitting light and a transmissive region adjacent to the pixel region for transmitting external light therethrough; a first polarizer on a first surface of the transparent display device; a first retarder between the first polarizer and the first surface of the transparent display device; a second polarizer on a second surface of the transparent display device, the first and second surfaces of the transparent display device being opposite to each other; and a conversion retarder between the second polarizer and the second surface of the transparent display device, wherein the transparent display device comprises:
a pixel circuit unit in the pixel region and including at least one thin-film transistor (TFT),a first insulating layer covering at least the pixel circuit unit,a first electrode on the first insulating layer to be electrically connected to the pixel circuit unit, the first electrode being located in the pixel region,a second electrode in at least the pixel region and facing the first electrode, andan organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the first polarizer linearly polarizes an incident light from an exterior or from the first retarder to transmit a first linearly polarized light therethrough, wherein the first retarder delays a phase of an incident light from the first polarizer or from the conversion retarder to transmit a first wavelength-delayed light therethrough, wherein the second polarizer linearly polarizes an incident light from exterior or from the conversion retarder to transmit a second linearly polarized light therethough, and wherein the conversion retarder delays a wavelength of an incident light from the first retarder or from the second polarizer within a range from a first phase to a second phase depending on power supplied to the conversion retarder to transmit a second wavelength-delayed light therethrough.