Display device, method of controlling the same, and projection-type display apparatus
AssigneeSony Corporation
InventorsTakashi Hirakawa, Masakazu Aoki
Life of this patent
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Abstract
A liquid-crystal display device performs a feedback process. A video signal is written on pixels on a unit by unit basis, each unit including a plurality of pixels (six pixels, for example). Scan pulses output from RGB LCD panels are supplied to a driver IC that supplies the RGB LCD panels with a variety of timing signals. A delay amount from the scan pulses from the optimum state thereof is measured. The delay amount is accounted for in a pulse that samples and holds the video signal, i.e., a pulsewidth control clock pulse.
Claims13
A display device comprising:
- a display having a matrix of pixels;
- phase shift detector means for detecting the amount of phase shift of a writing signal for writing a video signal onto the pixel, the phase shift of the writing signal being caused as a result of the passage thereof through the display;
- and
- control means for adjusting the timing of the writing signal in a feedback process based on the phase shift amount detected by the phase shift detector means so that the phase shift amount becomes zero.
A method of controlling a display device having a display including a matrix of pixels, the method comprising the steps of:
- detecting the amount of phase shift of a writing signal for writing a video signal onto the pixel, the phase shift of the writing signal being caused as a result of the passage thereof through the display;
- and
- adjusting the timing of the writing signal in a feedback process based on the detected phase shift amount so that the phase shift amount becomes zero.
A projection-type display apparatus comprising:
- a display panel having a matrix of pixels;
- phase shift detector means for detecting the amount of phase shift of a writing signal for writing a video signal onto the pixel, the phase shift of the writing signal being caused as a result of the passage thereof through the display panel;
- and
- control means for adjusting the timing of the writing signal in a feedback process based on the phase shift amount detected by the phase shift detector means so that the phase shift amount becomes zero.
Dependencies are inferred from the claim text.