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US 2014/0211115 A1Published application
Liquid crystal display device and equipment mounted with liquid crystal dispay device
AssigneeStanley Electric Co., Ltd.
InventorYoshihisa IWAMOTO
Life of this patent
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Abstract
A liquid crystal display device comprising: a liquid crystal display element, and a drive circuit applying a voltage across opposing electrodes of the liquid crystal display element to have a display area put on alternating bright/dark displays at frequencies of 0.5 Hz to 5 Hz, wherein: a layer designed to reinforce vertical orientation control over liquid crystal molecules is disposed between a vertically oriented film and a liquid crystal layer of the liquid crystal display element, and pretilt angle in the liquid crystal layer is 87° or more and 89.52° or less.
Claims17
A liquid crystal display device comprising:
- a liquid crystal display element featuring (i) a first and second substrate placed opposite each other that feature, on the pair of opposing surfaces thereof, a pair of opposing electrodes constituting a display area and vertically oriented films at least one of which has been provided with an orientation treatment aimed at introducing a pretilt in a liquid crystal layer, (ii) a liquid crystal layer sandwiched between the first and second substrates that contains liquid crystal material with negative dielectric anisotropy and is vertically oriented with slight tilting, (iii) a layer disposed at least between one of the vertically oriented films and the liquid crystal layer, and designed to reinforce the vertical orientation control over the liquid crystal molecules of the liquid crystal layer, and (iv) a first and second polarizing plates that are placed, in a crossed Nicol arrangement, on the pair of surfaces of the first and second substrates located on the opposite side to the liquid crystal layer and have absorption axes that are each at a 45° angle to the orientation direction of the liquid crystal molecules located in the mid-thickness region of the liquid crystal layer,
- a light source placed on the second polarizing plate-side of the liquid crystal display element, and
- a drive circuit electrically connected to the electrodes of the first and second substrates, wherein:
- pretilt angle in the liquid crystal layer of the liquid crystal display element is 87° or more and 89.52° or less,
- the drive circuit applies a voltage across the opposing electrodes of the liquid crystal display element to have a display area put on alternating bright/dark displays at frequencies of 0.5 Hz to 5 Hz,
- the display area performs a blinking operation powered by the voltage, and
- the display area maintains display uniformity during bright display periods when a 2 Hz to 30 Hz vibration or a 0.5 Hz to 3 Hz external force is applied.
4 more elements
A liquid crystal display device comprising:
- a liquid crystal display element featuring (i) a first and second substrate placed opposite each other that feature, on the pair of opposing surfaces thereof, a pair of opposing electrodes constituting a display area and vertically oriented films at least one of which has been provided with an orientation treatment aimed at introducing a pretilt in a liquid crystal layer, (ii) a liquid crystal layer sandwiched between the first and second substrates that contains liquid crystal material with negative dielectric anisotropy and is vertically oriented with slight tilting, and (iii) a first and second polarizing plates that are placed, in a crossed Nicol arrangement, on the pair of surfaces of the first and second substrates located on the opposite side to the liquid crystal layer and have absorption axes that are each at a 45° angle to the orientation direction of the liquid crystal molecules located in the mid-thickness region of the liquid crystal layer,
- a light source placed on the second polarizing plate-side of the liquid crystal display element, and
- a drive circuit electrically connected to the electrodes of the first and second substrates, wherein:
- pretilt angle in the liquid crystal layer of the liquid crystal display element is 87° or more and 89.21° or less,
- the drive circuit applies a voltage across the opposing electrodes of the liquid crystal display element to have a display area put on alternating bright/dark displays at frequencies of 0.5 Hz to 5 Hz,
- the display area performs a blinking operation powered by the voltage, and
- the display area maintains display uniformity during bright display periods when a 2 Hz to 30 Hz vibration or a 0.5 Hz to 3 Hz external force is applied.
4 more elements
Dependencies are inferred from the claim text.