DISPLAY DEVICE

摘要

The present invention prevents image quality degradation due to pixel enlargement even when using an increased angle of inclination on projecting an image obliquely from a laser scanning display device. A swing mirror is controlled so that the scanning line density in the vertical direction of a display section is uniform in accordance with information including the angle of inclination, the distance of projection, and the display size of the display device with respect to the display section. A lens control driver is controlled so that a collecting lens has a focal point on the display section in accordance with a scanning position in the vertical direction of the swing mirror. The swing mirror or an image correction processing unit is controlled so that a display size in the horizontal direction of a display image on the display section is uniform regardless of the scanning position in the vertical direction.

主权项

1. A display device for emitting and scanning laser light modulated by an input video signal in a vertical direction and a horizontal direction of an image on which the video signal is based and displaying the image on a display unit, the display device comprising:
a laser light source which generates the laser light; a light source control/drive unit which causes the laser light source to generate laser light based on the video signal; a condensing lens which condenses the laser light generated by the laser light source on the display unit; a lens control/drive unit which drives the condensing lens and adjusts a position; a swinging mirror on which the laser light passing through the condensing lens is incident and which reflects the laser light while scanning in a vertical direction and a horizontal direction of the image and emits to the display unit; a scanning position determining unit which determines a scanning position of the vertical direction and the horizontal direction of the swinging mirror; a control unit which controls an operation of the display device based on information including an inclination angle, a projection distance, and a display size with respect to the display unit of the display device; a waveform LUT which stores scanning waveforms of the vertical direction and the horizontal direction of the swinging mirror, which are calculated by the control unit based on the information; and a correction amount LUT which stores a correction amount relating to a component of the display device according to the scanning position of the swinging mirror, which are calculated by the control unit based on the information, wherein the control unit reads the scanning waveform which the waveform LUT has and controls the swinging mirror such that a scanning line density of the vertical direction of the display unit is equalized, and reads a correction amount relating to a position of the condensing lens which the correction amount LUT has and controls the lens control/drive unit such that the condensing lens has a focus on the display unit according to the scanning position of the vertical direction of the swinging mirror determined by the scanning position determining unit, according to supplied information including an inclination angle, a projection distance, and a display size with respect to the display unit of the display device.