JP2004087409A5 - - Google Patents

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JP2004087409A5
JP2004087409A5 JP2002249933A JP2002249933A JP2004087409A5 JP 2004087409 A5 JP2004087409 A5 JP 2004087409A5 JP 2002249933 A JP2002249933 A JP 2002249933A JP 2002249933 A JP2002249933 A JP 2002249933A JP 2004087409 A5 JP2004087409 A5 JP 2004087409A5
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Japan
Prior art keywords
light
sheet
disposed
liquid crystal
crystal display
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JP2002249933A
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JP2004087409A (en
JP4076214B2 (en
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Priority to JP2002249933A priority Critical patent/JP4076214B2/en
Priority claimed from JP2002249933A external-priority patent/JP4076214B2/en
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Publication of JP2004087409A5 publication Critical patent/JP2004087409A5/ja
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Description

また、前記光源は複数配設されており、切替スイッチによりその一部を選択的に点灯させるようにしたことを特徴とする。
また更に、本発明の両面発光照明ユニットは、光源と、該光源が側面に近接配置された導光板と、光学シート及び反射シートとから成り、電子機器ケースの両面に背中合わせに配設された両液晶表示デバイスを照明する両面発光照明ユニットにおいて、前記光学シートは前記導光板とメイン若しくはサブのいずれか一方又は両方の液晶表示デバイスとの間に配設され、前記反射シートは光反射機能と光透過機能とを有する半透過反射シートであり、前記両液晶表示デバイスの中間に配設された一枚の前記導光板の一方の前記液晶表示デバイス側に前記半透過反射シートを配設し、前記光源からの光を前記導光板の両面から出射させて、前記両液晶表示デバイスを照射するようにしたことを特徴とする。
また、前記光学シートはサブの液晶表示デバイス側に配設される場合、前記半透過反射シートと前記サブの液晶表示デバイスとの間に配設したことを特徴とする。
また、前記光学シートはプリズムシートであることを特徴とする。
Further, a plurality of the light sources are disposed, and a part of the light sources is selectively turned on by a changeover switch.
Furthermore, the double-sided light emitting illumination unit according to the present invention comprises a light source, a light guide plate with the light source disposed close to the side, an optical sheet and a reflective sheet, and both disposed back to back on both sides of the electronic device case. In the double-sided light emitting illumination unit for illuminating a liquid crystal display device, the optical sheet is disposed between the light guide plate and one or both of the main and sub liquid crystal display devices, and the reflection sheet has a light reflection function and light A semi-transmissive reflective sheet having a transmissive function, wherein the semi-transmissive reflective sheet is disposed on the liquid crystal display device side of one of the light guide plates disposed between the two liquid crystal display devices; It is characterized in that light from a light source is emitted from both sides of the light guide plate to illuminate both the liquid crystal display devices.
When the optical sheet is disposed on the sub liquid crystal display device side, the optical sheet is disposed between the semi-transmissive reflective sheet and the sub liquid crystal display device.
Further, the optical sheet is a prism sheet.

Claims (9)

光源と、該光源が側面に近接配置された導光板と、前記導光板に重ねて配設した光学シート及び反射シートとから成り、電子機器ケースの両面に背中合わせに配設された両液晶表示デバイスを照明する両面発光照明ユニットにおいて、前記反射シートは光反射機能と光透過機能とを有する半透過反射シートであり、前記両液晶表示デバイスの中間に配設された一枚の前記導光板の一方の前記液晶表示デバイス側に前記半透過反射シートを配設し、前記光源からの光を前記導光板の両面から出射させて、前記両液晶表示デバイスを照射するようにしたことを特徴とする両面発光照明ユニット。  Both liquid crystal display devices comprising a light source, a light guide plate in which the light sources are disposed close to a side surface, and an optical sheet and a reflective sheet disposed overlapping on the light guide plate and disposed back to back on both sides of an electronic device case In the double-sided light emitting illumination unit for illuminating a light source, the reflection sheet is a transflective sheet having a light reflection function and a light transmission function, and one of the one light guide plate disposed between the two liquid crystal display devices The semi-transmissive reflective sheet is disposed on the side of the liquid crystal display device, and light from the light source is emitted from both sides of the light guide plate to illuminate both the liquid crystal display devices. Luminescent lighting unit. 前記半透過反射シートは、光透過部材から成る基材の一方の表面に光反射膜を離散的に配設したことを特徴とする請求項１記載の両面発光照明ユニット。  2. The dual emission lighting unit according to claim 1, wherein the semi-transmissive reflective sheet has a light reflective film discretely disposed on one surface of a base made of a light transmissive member. 前記半透過反射シートは、片面に光反射膜を有する基材に、複数の貫通穴が形成されていることを特徴とする請求項１記載の両面発光照明ユニット。  2. The dual emission lighting unit according to claim 1, wherein the semi-transmissive reflective sheet has a plurality of through holes formed in a base material having a light reflective film on one side. 前記半透過反射シートは、乳白色シートであることを特徴とする請求項１記載の両面発光照明ユニット。  The dual emission lighting unit according to claim 1, wherein the transflective sheet is a milky white sheet. 前記半透過反射シートは、発泡層を有することを特徴とする請求項１記載の両面発光照明ユニット。  The dual emission lighting unit according to claim 1, wherein the transflective sheet has a foam layer. 前記光源は複数配設されており、切替スイッチによりその一部を選択的に点灯させるようにしたことを特徴とする請求項１乃至請求項５のいずれかに記載の両面発光照明ユニット。  6. The double-sided light emitting illumination unit according to any one of claims 1 to 5, wherein a plurality of the light sources are disposed, and a part of the light sources is selectively lighted by a changeover switch. 光源と、該光源が側面に近接配置された導光板と、光学シート及び反射シートとから成り、電子機器ケースの両面に背中合わせに配設された両液晶表示デバイスを照明する両面発光照明ユニットにおいて、前記光学シートは前記導光板とメイン若しくはサブのいずれか一方又は両方の液晶表示デバイスとの間に配設され、前記反射シートは光反射機能と光透過機能とを有する半透過反射シートであり、前記両液晶表示デバイスの中間に配設された一枚の前記導光板の一方の前記液晶表示デバイス側に前記半透過反射シートを配設し、前記光源からの光を前記導光板の両面から出射させて、前記両液晶表示デバイスを照射するようにしたことを特徴とする両面発光照明ユニット。A double-sided light emitting illumination unit comprising a light source, a light guide plate in which the light source is disposed close to a side surface, an optical sheet and a reflection sheet, and illuminating both liquid crystal display devices disposed back to back on both sides of the electronic device case The optical sheet is disposed between the light guide plate and the liquid crystal display device of one or both of the main and sub, and the reflective sheet is a semi-transmissive reflective sheet having a light reflective function and a light transmissive function. The semi-transmissive reflective sheet is disposed on the liquid crystal display device side of one of the light guide plates disposed in the middle of the two liquid crystal display devices, and light from the light source is emitted from both sides of the light guide plate A dual emission lighting unit characterized in that the two liquid crystal display devices are illuminated. 前記光学シートはサブの液晶表示デバイス側に配設される場合、前記半透過反射シートと前記サブの液晶表示デバイスとの間に配設したことを特徴とする請求項７記載の両面発光照明ユニット。8. The double-sided light emitting illumination unit according to claim 7, wherein, when the optical sheet is disposed on the side of the sub liquid crystal display device, the optical sheet is disposed between the semi-transmissive reflective sheet and the sub liquid crystal display device. . 前記光学シートは少なくとも１枚以上のプリズムシートであることを特徴とする請求項７又は８記載の両面発光照明ユニット。9. The double-sided light emitting illumination unit according to claim 7, wherein the optical sheet is at least one prism sheet.
JP2002249933A 2002-08-29 2002-08-29 Double-sided lighting unit Expired - Lifetime JP4076214B2 (en)

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JP2002249933A JP4076214B2 (en) 2002-08-29 2002-08-29 Double-sided lighting unit

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JP2004087409A JP2004087409A (en) 2004-03-18
JP2004087409A5 true JP2004087409A5 (en) 2005-05-12
JP4076214B2 JP4076214B2 (en) 2008-04-16

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US7949213B2 (en) 2007-12-07 2011-05-24 Qualcomm Mems Technologies, Inc. Light illumination of displays with front light guide and coupling elements
US8049951B2 (en) 2008-04-15 2011-11-01 Qualcomm Mems Technologies, Inc. Light with bi-directional propagation

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TWI289708B (en) 2002-12-25 2007-11-11 Qualcomm Mems Technologies Inc Optical interference type color display
US7342705B2 (en) 2004-02-03 2008-03-11 Idc, Llc Spatial light modulator with integrated optical compensation structure
JP4571423B2 (en) * 2004-03-26 2010-10-27 シチズンホールディングス株式会社 Liquid crystal device
US7750886B2 (en) * 2004-09-27 2010-07-06 Qualcomm Mems Technologies, Inc. Methods and devices for lighting displays
US7355780B2 (en) 2004-09-27 2008-04-08 Idc, Llc System and method of illuminating interferometric modulators using backlighting
US7561323B2 (en) 2004-09-27 2009-07-14 Idc, Llc Optical films for directing light towards active areas of displays
KR20060086174A (en) 2005-01-26 2006-07-31 삼성전자주식회사 Liquid crystal display apparatus
JP4017007B2 (en) 2005-03-29 2007-12-05 エプソンイメージングデバイス株式会社 Electro-optical device and electronic apparatus including the electro-optical device
JP2007048636A (en) * 2005-08-10 2007-02-22 Nidec Copal Corp Double-sided light emitting device
JP4579146B2 (en) * 2005-12-06 2010-11-10 株式会社 日立ディスプレイズ Display device and planar light source device
WO2008045207A2 (en) 2006-10-06 2008-04-17 Qualcomm Mems Technologies, Inc. Light guide
EP2366942A1 (en) 2006-10-06 2011-09-21 Qualcomm Mems Technologies, Inc. Optical loss layer integrated in an illumination apparatus of a display
US8941631B2 (en) 2007-11-16 2015-01-27 Qualcomm Mems Technologies, Inc. Simultaneous light collection and illumination on an active display
US8068710B2 (en) 2007-12-07 2011-11-29 Qualcomm Mems Technologies, Inc. Decoupled holographic film and diffuser
JP5051901B2 (en) * 2008-01-21 2012-10-17 株式会社ジャパンディスプレイイースト Liquid crystal display
JP2011512006A (en) 2008-01-30 2011-04-14 デジタル オプティクス インターナショナル，リミティド ライアビリティ カンパニー Thin lighting system
US8721149B2 (en) 2008-01-30 2014-05-13 Qualcomm Mems Technologies, Inc. Illumination device having a tapered light guide
WO2010082952A1 (en) 2009-01-13 2010-07-22 Qualcomm Mems Technologies, Inc. Large area light panel and screen
US8172417B2 (en) 2009-03-06 2012-05-08 Qualcomm Mems Technologies, Inc. Shaped frontlight reflector for use with display
US20100302218A1 (en) 2009-05-29 2010-12-02 Qualcomm Mems Technologies, Inc. Illumination devices and methods of fabrication thereof
US8402647B2 (en) 2010-08-25 2013-03-26 Qualcomm Mems Technologies Inc. Methods of manufacturing illumination systems
JP2012199072A (en) * 2011-03-22 2012-10-18 Toshiba Corp Lighting device
JP6006019B2 (en) * 2012-06-27 2016-10-12 シャープ株式会社 Lighting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7949213B2 (en) 2007-12-07 2011-05-24 Qualcomm Mems Technologies, Inc. Light illumination of displays with front light guide and coupling elements
US8049951B2 (en) 2008-04-15 2011-11-01 Qualcomm Mems Technologies, Inc. Light with bi-directional propagation

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