LIQUID CRYSTAL DISPLAY
First Claim
Patent Images
1. A horizontal electric field type liquid crystal display, comprising:
- a first substrate;
a second substrate opposite to the first substrate;
a liquid crystal layer sandwiched between the first substrate and the second substrate;
pixels arranged in matrix and including a transmissive region and a reflective region;
a pixel electrode and a common electrode provided on the first substrate and applying a voltage to the liquid crystal layer;
a first about-λ
/2-wave plate provided on the opposite side of the liquid crystal layer in the first substrate;
a first about-λ
/4-wave plate provided on the opposite side of the liquid crystal layer in the first about-λ
/2-wave plate;
a first polarizing plate provided on the opposite side of the liquid crystal layer in the first about-λ
/4-wave plate;
a second about-λ
/4-wave plate provided on the opposite side of the liquid crystal layer in the second substrate; and
a second polarizing plate provided on the opposite side of the liquid crystal layer in the second about-λ
/4-wave plate.
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Abstract
A liquid crystal display device according to an embodiment of the present invention is a horizontal electric field type liquid crystal display. In the device, a liquid crystal layer is sandwiched between a first substrate and a second substrate opposite to each other, pixels arranged in matrix include a transmissive region and a reflective region, and the first substrate include a pixel electrode and a common electrode for applying a voltage to the liquid crystal layer. An about-λ/2-wave plate, an about-λ/4-wave plate, and a polarizing plate are provided opposite to the liquid crystal layer in the first substrate in this order from the first substrate side. An about-λ/4-wave plate and a polarizing plate are provided opposite to the liquid crystal layer in the second substrate in this order from the second substrate side.
9 Citations
12 Claims
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1. A horizontal electric field type liquid crystal display, comprising:
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a first substrate; a second substrate opposite to the first substrate; a liquid crystal layer sandwiched between the first substrate and the second substrate; pixels arranged in matrix and including a transmissive region and a reflective region; a pixel electrode and a common electrode provided on the first substrate and applying a voltage to the liquid crystal layer; a first about-λ
/2-wave plate provided on the opposite side of the liquid crystal layer in the first substrate;a first about-λ
/4-wave plate provided on the opposite side of the liquid crystal layer in the first about-λ
/2-wave plate;a first polarizing plate provided on the opposite side of the liquid crystal layer in the first about-λ
/4-wave plate;a second about-λ
/4-wave plate provided on the opposite side of the liquid crystal layer in the second substrate; anda second polarizing plate provided on the opposite side of the liquid crystal layer in the second about-λ
/4-wave plate. - View Dependent Claims (3, 5, 7, 9, 11)
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2. A horizontal electric field type liquid crystal display, comprising:
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a first substrate; a second substrate opposite to the first substrate; a liquid crystal layer sandwiched between the first substrate and the second substrate; pixels arranged in matrix and including a transmissive region and a reflective region; a pixel electrode and a common electrode provided on the first substrate and applying a voltage to the liquid crystal layer; a first about-λ
/2-wave plate provided on the opposite side of the liquid crystal layer in the first substrate;a second about-λ
/2-wave plate provided on the opposite side of the liquid crystal layer in the first about-λ
/2-wave plate;a first about-λ
/4-wave plate provided on the opposite side of the liquid crystal layer in the second about-λ
/2-wave plate;a first polarizing plate provided on the opposite side of the liquid crystal layer in the first about-λ
/4-wave plate;a third about-λ
/2-wave plate provided on the opposite side of the liquid crystal layer in the second substrate;a second about-λ
/4-wave plate provided on the opposite side of the liquid crystal layer in the third about-λ
/2-wave plate; anda second polarizing plate provided on the opposite side of the liquid crystal layer in the second about-λ
/4-wave plate. - View Dependent Claims (4, 6, 8, 10, 12)
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Specification
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Current AssigneeMitsubishi Electric Corporation
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Original AssigneeMitsubishi Electric Corporation
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InventorsNAGANO, Shingo, ISHIKAWA, Yoshimitsu
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Application NumberUS11/767,099Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current349/98CPC Class CodesG02F 1/133371 Cells with varying thicknes...G02F 1/133555 TransflectorsG02F 1/134363 for applying an electric fi...
