Liquid crystal device and liquid crystal apparatus
First Claim
1. A liquid crystal device, comprising:
- a pair of substrates each having thereon an electrode, and a smectic liquid crystal disposed between the substrates, said smectic liquid crystal having a plurality of molecular layers each comprising a plurality of liquid crystal molecules, whereinsaid smectic liquid crystal is disposed to form an optical modulation region including a first region wherein the molecular layers are aligned to have a layer inclination angle smaller than a calculated layer inclination angle based on a temperature-dependent layer spacing-changing characteristic, and a second region wherein the molecular layers are aligned to form a chevron structure having a layer inclination angle above 3 degrees.
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Abstract
A liquid crystal device is constituted by a pair of substrates each having thereon an electrode, and a smectic liquid crystal having a plurality of smectic liquid crystal layers disposed between the substrates. The smectic liquid crystal is disposed to form a first region wherein the smectic liquid crystal layers are aligned to have a layer inclination angle smaller than a calculated layer inclination angle based on a temperature-dependent layer spacing-changing characteristic or are aligned in a direction perpendicular to the substrates to form a bookshelf structure, and a second region wherein the smectic liquid crystal layers are aligned to form a chevron structure having a substantial layer inclination angle or having a layer inclination angle substantially equal to a calculated layer inclination angle based on a temperature-dependent layer spacing-changing characteristic. The liquid crystal device having the first an second regions described above is effective in improving a contrast ratio and a driven margin parameter.
48 Citations
73 Claims
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1. A liquid crystal device, comprising:
- a pair of substrates each having thereon an electrode, and a smectic liquid crystal disposed between the substrates, said smectic liquid crystal having a plurality of molecular layers each comprising a plurality of liquid crystal molecules, wherein
said smectic liquid crystal is disposed to form an optical modulation region including a first region wherein the molecular layers are aligned to have a layer inclination angle smaller than a calculated layer inclination angle based on a temperature-dependent layer spacing-changing characteristic, and a second region wherein the molecular layers are aligned to form a chevron structure having a layer inclination angle above 3 degrees. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 73)
- a pair of substrates each having thereon an electrode, and a smectic liquid crystal disposed between the substrates, said smectic liquid crystal having a plurality of molecular layers each comprising a plurality of liquid crystal molecules, wherein
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19. A liquid crystal device, comprising:
- a pair of substrates each having thereon an electrode, and a smectic liquid crystal disposed between the substrates, said smectic liquid crystal having a plurality of molecular layers each comprising a plurality of liquid crystal molecules, wherein
said smectic liquid crystal is disposed to form a first region wherein the molecular layers are aligned to have a layer inclination angle smaller than a calculated layer inclination angle based on a temperature-dependent layer spacing-changing characteristic, and a second region wherein the molecular layers are aligned to form a chevron structure having a layer inclination angle substantially equal to a calculated layer inclination angle based on a temperature-dependent layer spacing-changing characteristic. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
- a pair of substrates each having thereon an electrode, and a smectic liquid crystal disposed between the substrates, said smectic liquid crystal having a plurality of molecular layers each comprising a plurality of liquid crystal molecules, wherein
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37. A liquid crystal device, comprising:
- a pair of substrates each having thereon an electrode, and a smectic liquid crystal disposed between the substrates, said smectic liquid crystal having a plurality of molecular layers each comprising a plurality of liquid crystal molecules disposed between the substrates, wherein
said smectic liquid crystal is disposed to form an optical modulation region including a first region wherein the molecular layers are aligned in a direction substantially perpendicular to the substrates to form a bookshelf structure, and a second region wherein the molecular layers are aligned to form a chevron structure having a layer inclination angle above 3 degrees. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
- a pair of substrates each having thereon an electrode, and a smectic liquid crystal disposed between the substrates, said smectic liquid crystal having a plurality of molecular layers each comprising a plurality of liquid crystal molecules disposed between the substrates, wherein
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55. A liquid crystal device, comprising:
- a pair of substrates each having thereon an electrode, and a smectic liquid crystal disposed between the substrates, said smectic liquid crystal having a plurality of molecular layers each comprising a plurality of liquid crystal molecules disposed between the substrates, wherein
said smectic liquid crystal is disposed to form a first region wherein the molecular layers are aligned in a direction substantially perpendicular to the substrates to a form a bookshelf structure, and a second region wherein the molecular layers are aligned to form a chevron structure having a layer inclination angle substantially equal to a calculated layer inclination angle based on a temperature-dependent layer spacing-changing characteristics. - View Dependent Claims (56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72)
- a pair of substrates each having thereon an electrode, and a smectic liquid crystal disposed between the substrates, said smectic liquid crystal having a plurality of molecular layers each comprising a plurality of liquid crystal molecules disposed between the substrates, wherein
Specification