INTERLACED LIQUID CRYSTAL DISPLAY PANEL AND BACKLIGHT USED IN A HEAD MOUNTED DISPLAY
First Claim
1. A display device, comprising:
- an liquid crystal display (LCD) panel including at least a first group of pixel lines and a second group of pixel lines;
a backlight disposed behind the LCD panel to emit light toward the first and second groups of pixel lines;
a shift grating disposed between the LCD and the backlight, the shift grating configured to block the light from the backlight from reaching either the first group of pixel lines or the second group of pixel lines; and
a controller configured to;
set the first group of pixel lines with first group line data for a video frame;
control the backlight and the shift grating such that the light from the backlight illuminates the first group of pixel lines when the first group of pixel lines are set with the first group line data;
while the backlight is illuminating the first group of pixel lines and the first group line data is set on the first group of pixel lines, set the second group of pixel lines with second group line data for the video frame; and
control the backlight and the shift grating such that the light from the backlight illuminates the second group of pixel lines when the second group of pixel lines are set with the second group line data.
3 Assignments
0 Petitions
Accused Products
Abstract
A liquid crystal display (LCD) device is driven in interlaced scan to accommodate for liquid crystal (LC) setting times without sacrificing brightness. The LCD device includes an LCD panel including a first group of (e.g., even) pixel lines and a second group (e.g., odd) pixel lines, a backlight disposed behind the LCD panel to emit light toward the even and odd pixel lines, a shift grating disposed between the LCD and the backlight, the shift grating configured to block the light from the backlight from reaching either the first group of pixel lines or the second group of pixel lines, and a controller. The controller drives the LCD panel using an interlaced scan, coordinates the activation of the backlight (e.g., a strobed backlight), and changes the state of the shift grating to block the light from the backlight from reaching either the first group of pixel lines or the second group of pixel lines.
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Citations
22 Claims
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1. A display device, comprising:
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an liquid crystal display (LCD) panel including at least a first group of pixel lines and a second group of pixel lines; a backlight disposed behind the LCD panel to emit light toward the first and second groups of pixel lines; a shift grating disposed between the LCD and the backlight, the shift grating configured to block the light from the backlight from reaching either the first group of pixel lines or the second group of pixel lines; and a controller configured to; set the first group of pixel lines with first group line data for a video frame; control the backlight and the shift grating such that the light from the backlight illuminates the first group of pixel lines when the first group of pixel lines are set with the first group line data; while the backlight is illuminating the first group of pixel lines and the first group line data is set on the first group of pixel lines, set the second group of pixel lines with second group line data for the video frame; and control the backlight and the shift grating such that the light from the backlight illuminates the second group of pixel lines when the second group of pixel lines are set with the second group line data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A head-mounted display (HMD), comprising:
a display device, including; an liquid crystal display (LCD) panel including at least a first group of pixel lines and a second group of pixel lines; a backlight disposed behind the LCD panel to emit light toward the first and second groups of pixel lines; a shift grating disposed between the LCD and the backlight, the shift grating configured to block the light from the backlight from reaching either the first group of pixel lines or the second group of pixel lines; and a controller configured to; set the first group of pixel lines with first group line data for a video frame; control the backlight and the shift grating such that the light from the backlight illuminates the first group of pixel lines when the first group of pixel lines are set with the first group line data; while the backlight is illuminating the first group of pixel lines and the first group line data is set on the first group of pixel lines, set the second group of pixel lines with second group line data for the video frame; and control the backlight and the shift grating such that the light from the backlight illuminates the second group of pixel lines when the second group of pixel lines are set with the second group line data. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
Specification