JP4501899B2 - 液晶表示装置および電子機器 - Google Patents
液晶表示装置および電子機器 Download PDFInfo
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133553—Reflecting elements
- G02F1/133555—Transflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2202/00—Materials and properties
- G02F2202/40—Materials having a particular birefringence, retardation
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Description
(液晶表示装置の概略構成)
まず、本発明の第1の実施形態に係る液晶表示装置の構成について図1を用いて説明する。
ここで、液晶表示装置100の構成について、図2から図5を用いてさらに詳述する。
次にセル厚の大きさと透過率の関係について述べる。図6は、一般的な液晶表示装置における、各色のサブ画素での印加電圧と透過率の関係を示すグラフである。この一般的な液晶表示装置は、RGBの各色のサブ画素より構成され、ノーマリーホワイトの液晶表示装置である。また、この一般的な液晶表示装置において、RGBの各色のサブ画素におけるセル厚は、すべて同じ一定の厚さとされている。ここで、横軸は、サブ画素における画素電極10と共通電極8の間に印加される印加電圧の大きさを示し、縦軸は、RGBの各色のサブ画素における光の透過率を示している。ここで、RGBのサブ画素の光の透過率は、液晶層4の液晶の配向状態によって決まる。
本実施形態の液晶表示装置100は、図3(a)に示すように、表示画素AGにおけるR、G、B、Wのサブ画素SGの面積がすべて等しい。このような場合には、R、G、Bの3色のサブ画素SGの面積比に起因したホワイトバランスのずれは生じない。このため、Wのサブ画素SGにおけるリタデーション値Δnw・dwの調整においては、λrに近づけて赤みがかった白表示としたり、λbに近づけて青みがかった白表示としたりする必要はない。したがって、Wのサブ画素SGのセル厚dwは、視感度が最も高く輝度を確保しやすいGの波長に近い値、即ち、dr≧dw≒dg≧db(但し、dr=dw=dbとなることはない)となる値に設定する。もしくは、Wのサブ画素SGにおけるリタデーション値Δnw・dwは、Gのサブ画素SGにおけるリタデーション値Δng・dgと等しくなるように設定する。このような構成によれば、輝度の高い表示を行うことができる。
続いて、本発明の第2の実施形態に係る液晶表示装置200について説明する。液晶表示装置200は、各表示画素AGにおけるサブ画素SGの配列構造が第1の実施形態の液晶表示装置100と異なるものである。その他の構成については液晶表示装置100と同様であるので、以下の説明に用いる各図においては、液晶表示装置100と同一の構成要素には同一の符号を付すことにして説明は省略する。
図7は、本実施形態に係る液晶表示装置200の概略構成を模式的に示す平面図である。液晶表示装置200は、各表示画素AGが2行×3列の6つのサブ画素SGからなる点で液晶表示装置100と異なる。
図8に示す表示画素AGでは、Bのサブ画素SGの数が、RやGのサブ画素SGの数に比較して少ないので、表示画素AG全体から見ると、Bのサブ画素SGの面積は、RやGのサブ画素SGの面積に比較して小さくなる。具体的には、表示画素AGは、RGBのサブ画素SGのうちのBのサブ画素SGとWのサブ画素SGの合計面積が、他の2色のサブ画素SGの各々の面積と略等しく構成されている。図8に示す表示画素AGでは、一例として、表示画素AGは、前記RGB及び非着色の各色のサブ画素SGの面積の比率が2:2:1:1とされている。このような画素配列構造の表示画素AGを有する液晶表示装置200において、白色表示を行う場合、Bの色の光が不足するので、黄色みがかった白色表示となる。本実施形態に係る液晶表示装置200では、このような白色表示における色付きを抑えるために、Wのサブ画素SGにおけるリタデーション値Δnw・dwをBのサブ画素SGにおけるリタデーション値Δnb・dbに近い値に設定することとする。つまり、Wのサブ画素SGにおけるセル厚を調整して、Bのセル厚とほぼ等しく設定する。これにより、Wのサブ画素SGより出光する光は、Bの色の成分が強調され、不足しているBの色の光を補うことができ、Bのサブ画素SGの面積が小さいことによって発生する白色表示における上述した色付きを抑えることができる。このようにすることで、Wのサブ画素SGにおけるセル厚を調整して、Bの光の成分を強調することにより、表示画素AGにおけるBの色の光を補うことができ、白色表示の色付きを抑えることができる。
次に、本実施形態に係る液晶表示装置100(液晶表示装置200を含む。以下同じ。)を適用可能な電子機器の具体例について図10を参照して説明する。
Claims (2)
- 一対の基板と、
RGB及び非着色の4つのサブ画素を有して構成され、前記RGB及び非着色の各サブ画素の面積の比率が2:2:1:1となる構成を有する表示画素と、
前記一対の基板の間に挟持される液晶層と、を備え、
前記RGB及び非着色の4つのサブ画素で、前記液晶層のセル厚を調整することによって、
前記R、G、B、非着色の各サブ画素は、夫々のセル厚の大きさをdr、dg、db、dwとすると、dr≧dg≧dw≒db(但し、dr=dw=dbとなることはない)となる関係を有することを特徴とする液晶表示装置。 - 請求項1に記載の液晶表示装置を表示部として用いることを特徴とする電子機器。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006163117A JP4501899B2 (ja) | 2005-07-06 | 2006-06-13 | 液晶表示装置および電子機器 |
KR1020060062803A KR100825148B1 (ko) | 2005-07-06 | 2006-07-05 | 액정 표시 장치 및 전자기기 |
US11/480,836 US20070008463A1 (en) | 2005-07-06 | 2006-07-06 | Liquid crystal display device and electronic apparatus |
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JP2005197073 | 2005-07-06 | ||
JP2006163117A JP4501899B2 (ja) | 2005-07-06 | 2006-06-13 | 液晶表示装置および電子機器 |
Publications (2)
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JP2007041551A JP2007041551A (ja) | 2007-02-15 |
JP4501899B2 true JP4501899B2 (ja) | 2010-07-14 |
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JP2006163117A Active JP4501899B2 (ja) | 2005-07-06 | 2006-06-13 | 液晶表示装置および電子機器 |
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US (1) | US20070008463A1 (ja) |
JP (1) | JP4501899B2 (ja) |
KR (1) | KR100825148B1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5032157B2 (ja) * | 2007-03-05 | 2012-09-26 | 株式会社ジャパンディスプレイセントラル | 液晶表示装置 |
JP2010169704A (ja) | 2009-01-20 | 2010-08-05 | Casio Computer Co Ltd | 液晶表示装置 |
JP4877363B2 (ja) | 2009-06-29 | 2012-02-15 | カシオ計算機株式会社 | 液晶表示装置及びその駆動方法 |
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2006
- 2006-06-13 JP JP2006163117A patent/JP4501899B2/ja active Active
- 2006-07-05 KR KR1020060062803A patent/KR100825148B1/ko active IP Right Grant
- 2006-07-06 US US11/480,836 patent/US20070008463A1/en not_active Abandoned
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JP2004004822A (ja) * | 2002-05-04 | 2004-01-08 | Samsung Electronics Co Ltd | 4色駆動液晶表示装置及びこれに使用する表示板(liquidcrystaldisplaysusing4colorandpanelforthesame) |
JP2004280111A (ja) * | 2003-03-13 | 2004-10-07 | Samsung Electronics Co Ltd | 液晶表示装置及びこれに使用される薄膜トランジスタ表示板 |
Also Published As
Publication number | Publication date |
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JP2007041551A (ja) | 2007-02-15 |
US20070008463A1 (en) | 2007-01-11 |
KR20070005506A (ko) | 2007-01-10 |
KR100825148B1 (ko) | 2008-04-24 |
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