JP2004086145A5 - - Google Patents

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JP2004086145A5
JP2004086145A5 JP2003060198A JP2003060198A JP2004086145A5 JP 2004086145 A5 JP2004086145 A5 JP 2004086145A5 JP 2003060198 A JP2003060198 A JP 2003060198A JP 2003060198 A JP2003060198 A JP 2003060198A JP 2004086145 A5 JP2004086145 A5 JP 2004086145A5
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display device
polarization
unit
light
polarized light
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JP2003060198A
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JP2004086145A (en
JP4085846B2 (en
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Publication of JP2004086145A5 publication Critical patent/JP2004086145A5/ja
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Claims (20)

透過偏光軸可変手段と、
前記透過偏光軸可変手段の観察側に配置され、第１の偏光の光を透過するとともに、前記第１の偏光の光の偏光軸に交差する偏光軸を有する第２の偏光の光を反射する第１の偏光選択手段と、
前記透過偏光軸可変手段の背面側に配置され、第３の偏光の光を透過するとともに、前記第３の偏光の光の偏光の光軸に交差する偏光軸を有する第４の偏光の光を吸収若しくは反射する第２の偏光選択手段と、
前記第２の偏光選択手段の背面側に配置された照明装置とを有し、
前記透過偏光軸可変手段から表示光を出射する表示モードと、前記照明手段を非点灯状態とする状態にするミラーモードとを切換制御可能に構成され、
前記透過偏光軸可変手段は、前記第３の偏光の少なくとも一部を前記第１の偏光に変換可能に構成され、
前記表示モードにおける前記照明手段の照明光の出射角分布は、表示画面に対する法線方向に出射される光量が最も多いことを特徴とする表示装置。A transmission polarization axis variable means;
It is arranged on the observation side of the transmission polarization axis varying means, transmits the first polarized light, and reflects the second polarized light having a polarization axis intersecting the polarization axis of the first polarized light. First polarization selection means;
The fourth polarized light, which is disposed on the back side of the transmission polarization axis varying means, transmits the third polarized light and has a polarization axis that intersects the optical axis of the polarized light of the third polarized light. A second polarization selection means for absorbing or reflecting;
An illuminating device disposed on the back side of the second polarization selection means,
The display mode in which display light is emitted from the transmission polarization axis variable unit and the mirror mode in which the illumination unit is in a non-lighting state can be switched and controlled.
The transmission polarization axis varying means is configured to be capable of converting at least a part of the third polarized light into the first polarized light,
The display device characterized in that the emission angle distribution of the illumination light of the illumination means in the display mode has the largest amount of light emitted in the direction normal to the display screen. 前記第１の偏光選択手段の観察側に、他の透過偏光軸可変手段が配置されていないことを特徴とする請求項１に記載の表示装置。  The display device according to claim 1, wherein no other transmission polarization axis variable unit is arranged on the observation side of the first polarization selection unit. 前記第１の偏光選択手段と前記透過偏光軸可変手段との間に、前記第１の偏光の光を透過するとともに、前記第２の偏光の光を吸収する第３の偏光選択手段が配置されていることを特徴とする請求項１又は２に記載の表示装置。  Between the first polarization selection unit and the transmission polarization axis variable unit, a third polarization selection unit that transmits the light of the first polarization and absorbs the light of the second polarization is disposed. The display device according to claim 1, wherein the display device is a display device. 前記第２の偏光選択手段と前記照明装置との間に第４の偏光選択手段を有し、
前記第４の偏光選択手段は、前記第３の偏光の光を透過するとともに、前記第４の偏光の光を反射することを特徴とする請求項１乃至３のいずれか１項に記載の表示装置。A fourth polarization selection unit between the second polarization selection unit and the illumination device;
4. The display according to claim 1, wherein the fourth polarization selection unit transmits the light of the third polarization and reflects the light of the fourth polarization. 5. apparatus. 前記第１の偏光選択手段における観察側の表面が平坦であることを特徴とする請求項１乃至４のいずれか１項に記載の表示装置。  5. The display device according to claim 1, wherein an observation-side surface of the first polarization selection unit is flat. 前記第１の偏光選択手段における観察側の表面上に透明な保護膜が形成されていることを特徴とする請求項１乃至５のいずれか１項に記載の表示装置。  The display device according to claim 1, wherein a transparent protective film is formed on a surface on the observation side in the first polarized light selection unit. 前記第１の偏光選択手段と前記照明手段との間に、外光を観察側に表示に寄与する態様で反射する光反射要素が配置されていないことを特徴とする請求項１乃至６のいずれか１項に記載の表示装置。  7. A light reflecting element that reflects external light in a manner that contributes to display on the observation side is not disposed between the first polarization selection unit and the illumination unit. The display device according to claim 1. 前記第１の偏光選択手段における偏光選択領域は、前記透過偏光軸可変手段の透過偏光軸可変領域と重なる範囲よりも周囲に広がっていることを特徴とする請求項１乃至７のいずれか１項に記載の表示装置。  8. The polarization selection region in the first polarization selection unit extends to the periphery of a range overlapping the transmission polarization axis variable region of the transmission polarization axis variable unit. 9. The display device described in 1. 前記照明手段の照明光は、主として出射角が０〜４０度の範囲内で分布していることを特徴とする請求項１乃至８のいずれか１項に記載の表示装置。  The display device according to any one of claims 1 to 8, wherein the illumination light of the illumination means is distributed mainly within a range of an emission angle of 0 to 40 degrees. 前記照明手段の照明光は、出射角が４５度を越える範囲内で前記法線方向の光量の１／５０以下になることを特徴とする請求項９に記載の表示装置。  10. The display device according to claim 9, wherein the illumination light of the illumination unit becomes 1/50 or less of the light amount in the normal direction within a range where the emission angle exceeds 45 degrees. 前記第１の偏光選択手段よりも背面側にカラーフィルタが配置されていることを特徴とする請求項１乃至１０のいずれか１項に記載の表示装置。  11. The display device according to claim 1, wherein a color filter is disposed on a back side of the first polarization selection unit. 前記第１の偏光選択手段と前記透過偏光軸可変手段の間に位相差板が配置されていることを特徴とする請求項１乃至１１のいずれか１項に記載の表示装置。  The display device according to claim 1, wherein a retardation plate is disposed between the first polarization selection unit and the transmission polarization axis variable unit. 前記第１の偏光選択手段の観察側に透明部材が配置され、
前記第１の偏光選択手段が直接若しくは間接的に前記透明部材に密接されていることを特徴とする請求項１に記載の表示装置。A transparent member is disposed on the observation side of the first polarized light selecting means;
The display device according to claim 1, wherein the first polarization selection unit is in close contact with the transparent member directly or indirectly. 前記第１の偏光選択手段は、前記透明部材に対して透明物質を介して接着されていることを特徴とする請求項１３に記載の表示装置。  The display device according to claim 13, wherein the first polarized light selecting unit is bonded to the transparent member via a transparent substance. 前記透明部材の前記第１の偏光選択手段の側の表面は平坦であることを特徴とする請求項１３又は請求項１４に記載の表示装置。  The display device according to claim 13 or 14, wherein a surface of the transparent member on the first polarized light selection unit side is flat. 前記透明部材の観察側の表面は曲面であることを特徴とする請求項１３又は請求項１４に記載の表示装置。  The display device according to claim 13 or 14, wherein a surface on the observation side of the transparent member is a curved surface. 請求項１乃至１６のいずれか１項に記載の表示装置を備えた電子機器。  An electronic apparatus comprising the display device according to claim 1. 請求項１乃至請求項１６のいずれか１項に記載の表示装置と、前記透過偏光軸可変手段を駆動する表示駆動手段とを備えた電子機器。  An electronic apparatus comprising: the display device according to claim 1; and a display driving unit that drives the transmission polarization axis varying unit. 請求項１乃至請求項１６のいずれか１項に記載の表示装置と、前記透過偏光軸可変手段を駆動する表示駆動手段と、前記照明手段を制御する照明制御手段とを備えた電子機器。  17. An electronic apparatus comprising: the display device according to claim 1; display drive means for driving the transmission polarization axis variable means; and illumination control means for controlling the illumination means. 請求項１７乃至１９のいずれか１項に記載の電子機器において、
前記表示装置の動作を操作できる、又は前記表示装置の表示にデータ入力を行える入力部を更に備え、
前記入力部を操作することによって前記表示モードと前記ミラーモードとを切り替え可能であることを特徴とする電子機器。The electronic device according to any one of claims 17 to 19,
It further comprises an input unit capable of operating the operation of the display device, or inputting data for display on the display device,
An electronic apparatus, wherein the display mode and the mirror mode can be switched by operating the input unit.
JP2003060198A 2002-06-24 2003-03-06 Display device and electronic apparatus equipped with the same Expired - Lifetime JP4085846B2 (en)

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JP2004086145A5 true JP2004086145A5 (en) 2005-10-13
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