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US 12,372,479 B2Granted
Optical inspection device for optical performance test of display device and optical inspection method using the same
AssigneeSamsung Display Co., Ltd.
InventorsGil Yeong Park, Min Kyoung Jung, Hee Young Lee
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Abstract
An optical inspection device for an optical performance test of a display device including a lens part configured to transmit external light, a phase film part configured to change a phase difference of the external light and transmit the external light, and an image processor configured to obtain electrical information of the external light, in which a phase difference of the phase film part is at least 7000 nm.
Claims11
An optical inspection method, comprising:
- preparing a display device and an optical inspection device;
- locating the optical inspection device on a front surface of the display device;
- and
- acquiring, by the optical inspection device, information on light emitted from the display device,
- wherein:
- the display device has a display area and includes a light emitting element configured to emit light in the display area;
- the optical inspection device has an optical path through which light provided from the outside is transmitted to acquire information of the light, the optical inspection device including a phase film part configured to change a phase difference of light provided thereto;
- and
- the phase film part has a phase difference of at least 7000 nm.
6 more elements
Dependencies are inferred from the claim text.