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US 12,659,449 B2Granted
Stereoscopic display device and shutter panel
AssigneeSharp Display Technology Corporation
InventorKeiichi Yamamoto
Life of this patent
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Abstract
A stereoscopic display device includes a display panel and a shutter panel. The shutter panel includes a liquid crystal layer, segment electrodes, a counter electrode and an auxiliary electrode that are connected to the ground, an insulating layer, and a shutter panel drive circuit. The shutter panel drive circuit switches a voltage applied to the segment electrodes between a first drive voltage and a ground voltage in synchronization with a switching of a display of the display panel. The auxiliary electrode is arranged on a side opposite to the liquid crystal layer with respect to the counter electrode. The insulating layer is arranged between the counter electrode and the auxiliary electrode.
Claims13
A stereoscopic display device, comprising:
- a display panel configured to alternately switch and display a left-eye image and a right-eye image;
- and
- a shutter panel configured to switch between a state where light incident from the display panel is changed into emission light having a first polarization direction and the emission light is output and a state where the light incident from the display panel is changed into emission light having a second polarization direction and the emission light is output,
- wherein the shutter panel includes:
- a first substrate on which a first electrode is formed;
- a second substrate on which a second electrode to which a fixed potential is applied is formed;
- a liquid crystal layer arranged between the first electrode and the second electrode;
- a drive circuit configured to:
- apply, to the first electrode, any one of a first voltage changing a polarization direction of the emission light into the first polarization direction and a second voltage changing the polarization direction of the emission light into the second polarization direction, and
- switch a voltage applied to the first electrode between the first voltage and the second voltage in synchronization with the display panel switching between a display of the left-eye image and a display of the right-eye image;
- a third electrode to which the fixed potential is applied;
- and
- an insulating layer arranged between the second electrode and the third electrode,
- wherein the drive circuit is further configured to drive a liquid crystal of the liquid crystal layer by changing a potential of the first electrode in a state in which the fixed potential is applied to the second electrode and the third electrode, and
- wherein the shutter panel is configured such that, from bottom to top, the first substrate, the first electrode, the liquid crystal layer, the second electrode, the insulating layer, the third electrode, and the second substrate are sequentially arranged.
12 more elements
A stereoscopic display device, comprising:
- a display panel configured to alternately switch and display a left-eye image and a right-eye image;
- and
- a shutter panel configured to switch between a state where light incident from the display panel is changed into emission light having a first polarization direction and the emission light is output and a state where the light incident from the display panel is changed into emission light having a second polarization direction and the emission light is output,
- wherein the shutter panel includes:
- a first substrate on which a first electrode is formed;
- a second substrate on which a second electrode to which a fixed potential is applied is formed;
- a liquid crystal layer arranged between the first electrode and the second electrode;
- a drive circuit configured to:
- apply, to the first electrode, any one of a first voltage changing a polarization direction of the emission light into the first polarization direction and a second voltage changing the polarization direction of the emission light into the second polarization direction, and
- switch a voltage applied to the first electrode between the first voltage and the second voltage in synchronization with the display panel switching between a display of the left-eye image and a display of the right-eye image;
- a third electrode to which the fixed potential is applied;
- and
- an insulating layer arranged between the second electrode and the third electrode,
- wherein the drive circuit is further configured to:
- apply the first voltage to the first electrode in a first period,
- apply, to the first electrode, in a second period after the first period, a first overshoot voltage having a polarity different from a polarity of the first voltage and having an absolute value of a voltage value smaller than an absolute value of a voltage value of the first voltage, and the absolute value is different from the fixed potential, and
- apply, to the first electrode, in a third period after the second period, the second voltage having a voltage value equal to the fixed potential, and
- wherein the shutter panel is configured such that, from bottom to top, the first substrate, the first electrode, the liquid crystal layer, the second electrode, the insulating layer, the third electrode, and the second substrate are sequentially arranged.
15 more elements
A shutter panel of a stereoscopic display device configured to switch between a state where light incident from a display panel configured to alternately switch and display a left-eye image and a right-eye image is changed into emission light having a first polarization direction and the emission light is output and a state where the light incident from the display panel is changed into emission light having a second polarization direction and the emission light is output, the shutter panel comprising:
- a first substrate on which a first electrode is formed;
- a second substrate on which a second electrode to which a fixed potential is applied is formed;
- a liquid crystal layer arranged between the first electrode and the second electrode;
- a drive circuit configured to:
- apply, to the first electrode, any one of a first voltage changing a polarization direction of the emission light into the first polarization direction and a second voltage changing the polarization direction of the emission light into the second polarization direction, and switch a voltage applied to the first electrode between the first voltage and the second voltage in synchronization with the display panel switching between a display of the left-eye image and a display of the right-eye image;
- a third electrode to which the fixed potential is applied and arranged between the second substrate and the second electrode;
- and an insulating layer arranged between the second electrode and the third electrode, wherein the drive circuit is further configured to drive a liquid crystal of the liquid crystal layer by changing a potential of the first electrode in a state in which the fixed potential is applied to the second electrode and the third electrode, and wherein, in a direction normal to the first substrate, the shutter panel is configured such that, from bottom to top, the first substrate, the first electrode, the liquid crystal layer, the second electrode, the insulating layer, the third electrode, and the second substrate are sequentially arranged.
4 more elements
Dependencies are inferred from the claim text.