Liquid crystal display apparatus
First Claim
1. A liquid crystal display apparatus, comprising:
- a liquid crystal cell;
polarizing plates placed on both sides of the liquid crystal cell;
a light diffusing element provided outside of the polarizing plate on a viewer side; and
a backlight unit provided outside of the polarizing plate on an opposite side of the viewer side,wherein the backlight unit comprises a collimated light source device that emits collimated light having a brightness half-value angle of 3°
to 35°
toward the liquid crystal cell,wherein a ratio Fw(BL)/Fw(FD) between a diffused light half-value angle Fw(FD) of the light diffusing element and the brightness half-value angle Fw(BL) of the collimated light is 0.5 or less, andwherein the light diffusing element comprises light diffusible fine particles.
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Accused Products
Abstract
A liquid crystal display apparatus according to an embodiment of the invention includes: a liquid crystal cell; polarizing plates placed on both sides of the liquid crystal cell; a light diffusing element provided outside of the polarizing plate on a viewer side; and a backlight unit provided outside of the polarizing plate on an opposite side of the viewer side. The backlight unit includes a collimated light source device that emits collimated light having a brightness half-value angle of 3° to 35° toward the liquid crystal cell, and a ratio Fw(BL)/Fw(FD) between a diffused light half-value angle Fw(FD) of the light diffusing element and the brightness half-value angle Fw(BL) of the collimated light is 0.5 or less.
20 Citations
4 Claims
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1. A liquid crystal display apparatus, comprising:
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a liquid crystal cell; polarizing plates placed on both sides of the liquid crystal cell; a light diffusing element provided outside of the polarizing plate on a viewer side; and a backlight unit provided outside of the polarizing plate on an opposite side of the viewer side, wherein the backlight unit comprises a collimated light source device that emits collimated light having a brightness half-value angle of 3°
to 35°
toward the liquid crystal cell,wherein a ratio Fw(BL)/Fw(FD) between a diffused light half-value angle Fw(FD) of the light diffusing element and the brightness half-value angle Fw(BL) of the collimated light is 0.5 or less, and wherein the light diffusing element comprises light diffusible fine particles. - View Dependent Claims (2, 3, 4)
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Specification
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- Resources
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Current AssigneeNitto Denko Corporation
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Original AssigneeNitto Denko Corporation
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InventorsNishimura, Akinori, Takemoto, Hiroyuki, Fuchida, Takehito, Miyatake, Minoru, Shutou, Shunsuke
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Primary Examiner(s)Won, Bumsuk
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Assistant Examiner(s)CHANG, CHARLES S
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Application NumberUS13/512,673Publication NumberTime in Patent Office1,537 DaysField of Search349 61- 63, 349/65, 349/112US Class Current349/62CPC Class CodesG02F 1/133504 Diffusing, scattering, diff...G02F 1/133606 including a specially adapt...G02F 1/133607 the light controlling membe...
