JP2007264211A - Color display method for color-sequential display liquid crystal display apparatus - Google Patents
Color display method for color-sequential display liquid crystal display apparatus Download PDFInfo
- Publication number
- JP2007264211A JP2007264211A JP2006087880A JP2006087880A JP2007264211A JP 2007264211 A JP2007264211 A JP 2007264211A JP 2006087880 A JP2006087880 A JP 2006087880A JP 2006087880 A JP2006087880 A JP 2006087880A JP 2007264211 A JP2007264211 A JP 2007264211A
- Authority
- JP
- Japan
- Prior art keywords
- color
- liquid crystal
- display
- target
- primary colors
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Description
本発明は、色順次表示方式液晶表示装置用の色表示方法に関する。 The present invention relates to a color display method for a color sequential display type liquid crystal display device.
フィールドシーケンシャルカラー（ＦＳＣ；色順次表示方式）薄膜トランジスタ（ＴＦＴ）液晶（ＬＣ）は、原色である赤（Ｒ），緑（Ｇ），青（Ｂ）をＬＣＤの同じ画素上に１フレーム内に順次表示し、その画素は、通常のカラーフィルタ（ＣＦ）型ＬＣＤ内の画素に普通に用いられている色サブ画素を使用しないというタイプのディスプレイである。周知のように、ＦＳＣディスプレイが抱える最大の難点は「色割れ（カラーブレイクアップ）」が生ずることである。すなわち、ある表示物体がＦＳＣスクリーン上で動いていると、その前端と後端が虹色に見える。この色割れが実用上問題ない程度に抑えられれば、ＦＳＣ ＬＣＤはきわめて有望なディスプレイとなる。 Field Sequential Color (FSC; Color Sequential Display Method) Thin Film Transistor (TFT) Liquid Crystal (LC) is the primary color of red (R), green (G), and blue (B) sequentially on the same pixel of LCD within one frame. The display is of a type that does not use the color sub-pixels normally used for pixels in a normal color filter (CF) LCD. As is well known, the biggest difficulty with FSC displays is the occurrence of “color breakup”. That is, when a certain display object is moving on the FSC screen, the front end and the rear end appear to be iridescent. If this color breakup is suppressed to a practical level, the FSC LCD will be a very promising display.
本発明は、この色割れの軽減を目指すものである。なお、参考とした文献を以下に掲げる。これらは発明の開示の項で引用される。
色割れの軽減を目指して、これまでにいくつもの提案がなされている。純ＦＳＣ（すなわちＣＦなし）ＬＣＤにおける通念は、ＲＧＢフレーム体系に違う色のサブフィールドを付加することである。それらの提案は、主観的評価のみに基づいて検討されていた（非特許文献１）。そのため、色割れの客観的、定量的評価ができず、色割れ軽減のための最善の方法は不明であった。 A number of proposals have been made with the aim of reducing color breakup. The convention in pure FSC (ie, no CF) LCD is to add different color subfields to the RGB frame system. Those proposals have been studied based only on subjective evaluation (Non-Patent Document 1). Therefore, objective and quantitative evaluation of color breakup was not possible, and the best method for reducing color breakup was unknown.
そこで、本発明は、純ＦＳＣ ＬＣＤにおける色割れを最善に軽減しうる色順次表示方式液晶表示装置用の色表示方法を提供することを目的とする。 Accordingly, an object of the present invention is to provide a color display method for a color sequential display type liquid crystal display device which can best reduce the color breakup in a pure FSC LCD.
ＬＣＤ上の動きぼけ（モーションブラー）は、スクリーン輝度の視線追随積分（アイトレースインテグレーション）によって模擬できること（非特許文献３）が知られている。視線追随積分は、横軸にスクリーン面内の１方向（例えば水平方向）座標、縦軸に時間をとった座標系上で、移動する標的の輝度を該標的の移動方向に沿って１フレームの範囲で積分したものである。ここで標的には視線が正しく追随するものとしている。これによれば、標的に視線を追随させた眼の網膜座標上の像すなわち視認像の輝度分布を計算できる。 It is known that motion blur on an LCD can be simulated by eye tracking integration of screen luminance (Non-patent Document 3). The line-of-sight tracking integration is based on a coordinate system in which the horizontal axis represents one direction (for example, horizontal direction) in the screen plane, and the vertical axis represents time. It is integrated over the range. Here, it is assumed that the line of sight follows the target correctly. According to this, it is possible to calculate the luminance distribution of the image on the retina coordinates of the eye whose visual line is made to follow the target, that is, the visual recognition image.
そこで、発明者らは、視線追随積分の理論計算方法をＦＳＣ ＬＣＤに適用して、視認像の輝度分布のみならず色分布をも理論計算することにより、種々の色表示方法における色割れの発現を定量的に比較評価し、その結果に基づいて本発明をなした。
すなわち、本発明は、以下のとおりである。
１．Ｒ，Ｇ，Ｂに代表される３原色を順次表示する色順次表示方式液晶表示装置用の色表示方法において、前記３原色の組の前および／または後に１または２以上のフィールド分の黒色を付加し、該付加した組内の色を順次表示することを特徴とする色順次表示方式液晶表示装置用の色表示方法。
Therefore, the inventors apply a theoretical calculation method of line-of-sight tracking integration to FSC LCD, and theoretically calculate not only the luminance distribution of the visual image but also the color distribution, thereby generating color breakup in various color display methods. Were quantitatively compared and evaluated, and the present invention was made based on the results.
That is, the present invention is as follows.
1. In a color display method for a liquid crystal display device that sequentially displays three primary colors represented by R, G, and B, black for one or more fields is displayed before and / or after the set of the three primary colors. A color display method for a color sequential display type liquid crystal display device, characterized by adding and sequentially displaying colors in the added set.
２．前記黒色の表示は、液晶を黒状態に駆動すること、または、液晶表示装置内のバックライトを消すことにより行うことを特徴とする前項１に記載の色順次表示方式液晶表示装置用の色表示方法。
３．黒をＫで表すものとして、前記黒色を付加した組内の表示順が、ＲＧＢＫＫＫ，ＫＲＧＢＫＫ，ＫＫＲＧＢＫ，ＫＫＫＲＧＢのいずれかであることを特徴とする前項１または２に記載の色順次表示方式液晶表示装置用の色表示方法。
2. 2. The color display for a color sequential display type liquid crystal display device according to item 1, wherein the black display is performed by driving the liquid crystal to a black state or by turning off the backlight in the liquid crystal display device. Method.
3. 3. The color sequential display type liquid crystal display according to item 1 or 2 above, wherein the display order in the set to which black is added is any one of RGBKKK, KRGBKK, KKRGBK, KKKRGB Color display method for equipment.
４．前記Ｒ，Ｇ，Ｂに代表される３原色に代えて、Ｒ，Ｇ，Ｂ以外の３原色とした前項１〜３のいずれかに記載の色順次表示方式液晶表示装置用の色表示方法。
５．前記Ｒ，Ｇ，Ｂに代表される３原色に代えて、４以上の多原色とした請求項１〜３のいずれかに記載の色順次表示方式液晶表示装置用の色表示方法。
６．前項１〜５のいずれかに記載の色表示方法の実行機能を有する色順次表示方式液晶表示装置。
4). 4. The color display method for a color sequential display type liquid crystal display device according to any one of items 1 to 3, wherein the three primary colors other than R, G and B are used instead of the three primary colors represented by R, G and B.
5). The color display method for a color sequential display type liquid crystal display device according to any one of claims 1 to 3, wherein four or more primary colors are used instead of the three primary colors represented by R, G and B.
6). 6. A color sequential display type liquid crystal display device having an execution function of the color display method according to any one of items 1 to 5.
本発明によれば、表示色の種類にかかわらず色割れを最善に低減できるとともに、動きボケ（モーションブラー）の小さい（すなわち視認像の幅が小さい）擬似インパルス駆動の実現が可能になる。 According to the present invention, it is possible to optimally reduce color breakage regardless of the type of display color, and to realize pseudo impulse driving with small motion blur (ie, a small visual image width).
本発明では、３原色の組の前および／または後に１または２以上のフィールド分の黒色を付加し、該付加した組内の色を順次表示する。例えば、３原色がＲ，Ｇ，Ｂ（赤，緑，青）でこの順に表示され、黒色をＫで表すとして、ＲＧＢＫ，ＫＲＧＢ，ＫＲＧＢＫなどのいずれかの表示順とする。ＲＧＢの組の内部にＫを挿入する（すなわち、ＲＫＧＢ，ＲＧＫＢなどとする）のは、色割れおよび動きボケの軽減効果に乏しい。 In the present invention, black for one or more fields is added before and / or after the set of three primary colors, and the colors in the added set are sequentially displayed. For example, the three primary colors are displayed in this order as R, G, and B (red, green, and blue), and black is expressed as K, and the display order is any one of RGBK, KRGB, and KRGBK. Inserting K inside the RGB set (that is, RKGB, RGKB, etc.) is poor in reducing color breakup and motion blur.
ところで、既存の２倍速ＦＳＣ ＬＣＤでは、通常１フレームでＲＧＢＲＧＢと表示（各色フィールドが２巡回）するから、これの例えば後半のＲＧＢをＫＫＫに変更してＲＧＢＫＫＫと表示するようにすれば、色表示制御系の大幅な設計変更の必要がなくて好ましい。なお、ＫＲＧＢＫＫ，ＫＫＲＧＢＫ，ＫＫＫＲＧＢとしても同様である。
本発明において、３原色は、通常用いられる代表的なＲ，Ｇ，Ｂのほか、Ｃ（シアン）、Ｍ（マゼンタ）、Ｙ（イエロー）でもよく、またこれ以外の３原色であってもよい。また、３原色の表示順は、その計６種の順列のいずれであってもよい。さらに、３原色に代えて、４以上の多原色としてもよい。
By the way, in the existing double-speed FSC LCD, normally RGBRGB is displayed in one frame (each color field is rotated twice). For example, if RGB in the latter half is changed to KKK and displayed as RGBKKK, color display is performed. This is preferable because there is no need to change the design of the control system. The same applies to KRGBKK, KKRGBK, and KKKRGB.
In the present invention, the three primary colors may be C (cyan), M (magenta), and Y (yellow) in addition to typical R, G, and B that are usually used, or may be other three primary colors. . The display order of the three primary colors may be any of the six permutations. Further, four or more primary colors may be used instead of the three primary colors.
色順次表示方式液晶表示装置（ＦＳＣ ＬＣＤ）におけるＬＣＤとしては、液晶の応答が速いものが好ましく、例えば、ＯＣＢ（光学補償ベンド）モードＬＣＤ（セルギャップ≒５μｍ）、強誘電性液晶モードＬＣＤ（セルギャップ≒１〜２μｍ）、ＴＮモードＬＣＤ（セルギャップ≒２μｍ）などが挙げられる。これらのうち、製造容易性の観点からすれば、セルギャップを比較的大きくしうる、ＯＣＢモードＬＣＤが、より好ましく用いうる。製造容易性の観点からすれば、液晶はＴＦＴ駆動型でアモルファスシリコンＴＦＴが好ましい。 As the LCD in the color sequential display type liquid crystal display device (FSC LCD), one having a quick liquid crystal response is preferable. For example, an OCB (optical compensation bend) mode LCD (cell gap≈5 μm), a ferroelectric liquid crystal mode LCD (cell Gap≈1-2 μm), TN mode LCD (cell gap≈2 μm), and the like. Among these, from the viewpoint of ease of manufacture, an OCB mode LCD that can make the cell gap relatively large can be more preferably used. From the viewpoint of ease of manufacture, the liquid crystal is preferably a TFT drive type and an amorphous silicon TFT.
ＦＳＣ ＬＣＤに装備されるバックライトとしては、ＬＥＤ（発光ダイオード）で構成される３原色走査バックライト（これの明滅タイミングについては非特許文献２，４参照）が、制御性の点で好ましい。ただし、これに限定されず、例えば色分けした回転円盤で構成したバックライト、あるいは反射型液晶に対するフロントライトでもよい。
以下、種々の色表示方法について、視線追随積分により視認像の特性評価を行った結果を述べる。なお、３原色はＲ，Ｇ，Ｂとし、色表示順はこの順（ＲＧＢ）とした。
As a backlight provided in the FSC LCD, a three-primary-color scanning backlight composed of LEDs (light emitting diodes) (refer to Non-Patent Documents 2 and 4 for the blinking timing thereof) is preferable in terms of controllability. However, the present invention is not limited to this. For example, a backlight composed of a color-coded rotating disk or a front light for a reflective liquid crystal may be used.
Hereinafter, the results of evaluating the characteristics of the visible image by the line-of-sight tracking integration for various color display methods will be described. The three primary colors were R, G, and B, and the color display order was this order (RGB).
（比較例１）
比較例１は、ＬＥＤからなる走査バックライトを備えた最も単純なＦＳＣ ＬＣＤの場合である。色表示方法は１倍速（シングルレート）単純ＦＳＣである。黒色背景内で幅Ｗ画素（すなわち、幅方向の画素数がＷになる幅）の白色（輝度Ｖ）矩形標的がスクリーンの左から右へ、速さＳ画素／フレーム（すなわち、１フレーム毎の移動画素数がＳになる速さ）で動き、眼はこの標的に正しく追随するものとする。動きの遅い標的（遅動標的）に眼が正しく追随する場合の視線追随積分計算方法とその結果を図２に示す。図２の上部のグラフに示すように、１フレームは一組のＲ,Ｇ,Ｂ色フィールドからなる。ビデオ入力は６０フレーム／秒の映像（イメージストリーム）をもつと仮定されるから、１倍速ＦＳＣでは１８０フィールド／秒の書替え速度になる。１色フィールドあたりの１ＬＥＤのＴＯＤ（ターンオンデューティ＝点灯時間／１フィールド）をＡ’とする。０＜Ａ’＜１である。積分計算は１フレーム内で矢印の方向に行う。
(Comparative Example 1)
Comparative example 1 is the simplest FSC LCD with a scanning backlight consisting of LEDs. The color display method is 1 × (single rate) simple FSC. A white (brightness V) rectangular target of width W pixels (ie, the width in which the number of pixels in the width direction is W) within a black background moves from the left to the right of the screen at a speed of S pixels / frame (ie, every frame) It is assumed that the eye moves correctly at the speed at which the number of moving pixels reaches S), and the eye follows this target correctly. FIG. 2 shows the line-of-sight tracking integration calculation method and the result when the eye correctly follows a slowly moving target (slow target). As shown in the upper graph of FIG. 2, one frame consists of a set of R, G, B color fields. Since the video input is assumed to have a video (image stream) of 60 frames / second, the rewriting speed is 180 fields / second in the 1 × speed FSC. It is assumed that TOD (turn-on duty = lighting time / 1 field) of one LED per one color field is A ′. 0 <A ′ <1. Integration calculation is performed in the direction of the arrow within one frame.
計算結果は、図２の下部のグラフに示すように、網膜座標上の輝度分布で表される。この分布の全幅が視認像の幅になり、この場合、Ｗ＋Ｓ（２＋Ａ’）／３ になる。また、分布には極大輝度のプラトーが１つだけ存在し、その幅は、Ｗ−Ｓ（２＋Ａ’）／３ になる。このプラトー域内は輝度ＶＡ’の正しい白色（コレクトホワイト）になる。プラトー域の両側は色割れが起こっている領域である。 The calculation result is represented by a luminance distribution on the retina coordinates as shown in the lower graph of FIG. The total width of this distribution is the width of the visible image, and in this case, W + S (2 + A ′) / 3. In addition, there is only one maximum luminance plateau in the distribution, and its width is W−S (2 + A ′) / 3. Within this plateau region, the brightness VA 'is correct white (collect white). Both sides of the plateau area are areas where color breakup occurs.
遅い動きというのは、このように標的の色が視認像の単一極大輝度プラトー域で再現することに対応する。この遅い動きにおけるプラトー域の幅（遅動プラトー幅と呼ぶ）が大きいほど視認像の標的色再現能が高いので、遅動プラトー幅は大きいほど良い。
この例において遅動プラトー幅が正しい値になる条件は、Ｗ／Ｓ＞（２＋Ａ’）／３ である。この不等式の右辺の値が「遅」と「速」の境界になる。これを「Ｗ/Ｓの閾値」（あるいは単に「閾値」）と呼ぶ。ただし、閾値の計算式は色表示方法により異なる。なお、一般に、遅動プラトー幅＝Ｗ−閾値×Ｓ、視認像の幅＝Ｗ＋閾値×Ｓ である。
The slow movement corresponds to the reproduction of the target color in the single maximum brightness plateau region of the visual image. The larger the width of the plateau area in this slow motion (referred to as the slow plateau width), the higher the target color reproducibility of the visible image, so the larger the slow plateau width, the better.
In this example, the condition that the slow plateau width becomes a correct value is W / S> (2 + A ′) / 3. The value on the right side of this inequality is the boundary between “slow” and “fast”. This is referred to as “W / S threshold” (or simply “threshold”). However, the calculation formula of the threshold varies depending on the color display method. In general, the slow plateau width = W−threshold × S, and the width of the visible image = W + threshold × S.
比較例１の１倍速単純ＦＳＣでは、Ｓが大きくなり（標的の動きが速くなり）、Ｗ／Ｓが閾値を下回る（遅動標的から速動標的に変わる）と、視認像に標的色が再現されず、視認像全域が色割れ領域になる（図３参照）。Ｗ／Ｓの閾値が小さいほど視認像全域にわたる色割れは生じにくいといえるから、この閾値は小さいほど良い。
また、視認像の幅が大きいとそれだけ動きボケが大きいことになるから、視認像の幅は小さいほど良い。
In the 1x simple FSC of Comparative Example 1, when S increases (target movement becomes faster) and W / S falls below the threshold (changes from slow target to fast target), the target color is reproduced in the visual image. In other words, the entire visible image becomes a color breakup area (see FIG. 3). As the W / S threshold value is smaller, it can be said that color breakup over the entire visible image is less likely to occur.
Also, if the width of the visual image is large, the motion blur is large accordingly, so the smaller the width of the visual image, the better.
上述のように、視線追随積分により、視認像の幅、Ｗ／Ｓの閾値および遅動プラトー幅を定量的に評価することができる。これら３つの量は、異なる色表示方法による動画の画質評価（すなわち色表示方法の相対比較）の重要な指標となる。
（比較例２）
比較例２は、１倍速単純ＦＳＣ ＬＣＤにおいて動き補間（モーションインターポレーション）の機能（非特許文献５，６参照）を付加した場合である。動き補間を付加して色表示を行う場合の視線追随積分計算方法とその結果を図４に示す。動き補間で表示される映像は、３倍速（１８０Ｈｚビデオ）の入力映像と同一であるが、単色データのみ抽出されてそれぞれの色フィールドに表示される。眼が標的動体に正しく追随する限りは、この動き補間の色表示方法により最善の動画質が得られ、色割れは生じない。視認像の幅は、Ｗ＋ＳＡ’／３であり、Ａ’が通常は０．５未満なので、ＣＲＴと同等の非常にくっきりした端部が得られる。ここでのＷ／Ｓの閾値はＡ’／３であり、これはあらゆる平面パネルディスプレイを通じて最小である。
As described above, the visual image width, the W / S threshold value, and the slow plateau width can be quantitatively evaluated by the line-of-sight tracking integration. These three quantities are important indicators for image quality evaluation of moving images by different color display methods (that is, relative comparison of color display methods).
(Comparative Example 2)
Comparative Example 2 is a case where a motion interpolation function (see Non-Patent Documents 5 and 6) is added to a 1 × speed simple FSC LCD. FIG. 4 shows a line-of-sight tracking integration calculation method and its result when color display is performed by adding motion interpolation. The video displayed by motion interpolation is the same as the input video at 3 × speed (180 Hz video), but only single color data is extracted and displayed in each color field. As long as the eye correctly follows the target moving object, the best moving image quality can be obtained by this motion interpolation color display method, and color breakup does not occur. The width of the visible image is W + SA ′ / 3, and A ′ is usually less than 0.5, so that a very sharp edge equivalent to CRT is obtained. The W / S threshold here is A ′ / 3, which is the smallest across all flat panel displays.
しかしながら、比較例２の動き補間に限らずＦＳＣでは一般に、実用上避け難い問題がある。この問題は、例えば図５の上部のグラフに示すように、標的が右から左へ速さＭで動き、一方、標的に対向する物体が左から右に速さＳで動き、ある瞬間に標的と交差する機会に発生する。このような機会は動画において頻繁に起こるものである。このような交差の瞬間に観測者の眼は標的物体の動きを追い、視線が速さＭで標的物体に追随するため、積分は標的物体に対する視線追随方向に沿って行われ、その結果、対向物体交差時の視認像の幅は、図５の下部のグラフに示すように、Ｗ＋Ｍ（２+Ａ’）／３＋２Ｓ／３ になる。この対向物体の視認像は色割れを起こし、標的と対向物体の相対速度が大きいと、３つの分離した純色斑となる。 However, not only the motion interpolation of Comparative Example 2 but FSC generally has problems that are practically unavoidable. The problem is that, for example, as shown in the upper graph of FIG. 5, the target moves at a speed M from right to left, while an object facing the target moves at a speed S from left to right. Occurs at the opportunity to intersect. Such opportunities often occur in moving images. At the moment of such an intersection, the observer's eye follows the movement of the target object, and the line of sight follows the target object at a speed M. Therefore, the integration is performed along the line-of-sight tracking direction with respect to the target object. As shown in the lower graph of FIG. 5, the width of the visual image when the object intersects is W + M (2 + A ′) / 3 + 2S / 3. The visible image of the opposing object causes color breakup, and when the relative speed between the target and the opposing object is high, three separated pure color spots are formed.
動き補間のない比較例１で同様の計算を行うと、対向物体交差時の視認像の幅は、Ｗ＋Ｍ（２+Ａ’）／３となる。すなわち、動き補間を付加すると、対向物体交差時の視認像の幅が２Ｓ／３だけ広くなる。
上述の、対向物体交差時の視認像の幅は、これが小さいほど、色割れ軽減および動きボケ軽減の両面で、画質が良いといえるから、前記３つの量（視認像の幅、Ｗ／Ｓの閾値および遅動プラトー幅）とともに、色表示方法の相対比較のための重要な指標となる。
（比較例３）
比較例３は、ＲＧＢの組にＹ（黄）フィールドまたはＷ（白）フィールドを付加する方法（すなわち四色単純ＦＳＣ、略して四色法）である。この四色法には、ＲＧＢ列へのＹまたはＷの付加後順列（列への挿入位置）と、ＲＧＢ像データからのＹまたはＷの決定の仕方に多様性がある。
When the same calculation is performed in Comparative Example 1 in which no motion interpolation is performed, the width of the visible image at the time of crossing the opposing object is W + M (2 + A ′) / 3. In other words, when motion interpolation is added, the width of the visual image when the opposite object intersects increases by 2S / 3.
As the width of the visual image at the crossing of the above-described object is smaller, it can be said that the image quality is better in terms of both color breakage reduction and motion blur reduction. Therefore, the three amounts (the width of the visual image, W / S Along with the threshold and slow plateau width, it is an important indicator for relative comparison of color display methods.
(Comparative Example 3)
Comparative Example 3 is a method of adding a Y (yellow) field or a W (white) field to a set of RGB (that is, four-color simple FSC, abbreviated four-color method). In this four-color method, there are diversity in the permutation after adding Y or W to the RGB column (insertion position in the column) and how to determine Y or W from the RGB image data.
付加後順列に関して、例えばＹＢＧＲの場合でいうと、フィールドの１番目と２番目の２色であるＹとＢの合成で白ができるから、標的色が白の場合、他の付加後順列（ＲＹＧＢ，ＹＲＧＢ等）に比べて色割れ軽減面の改善になるが、標的色が、例えば白っぽいマゼンタのような、Ｙ‐Ｂ線上にない色の場合、改善にならない。
ＲＧＢ像データからの、ＷまたはＹの決定の仕方に関して、例えばＷの場合でいうと、色割れ低減の最善策はＷフィールドに最大値を割り当てることである。すなわち、Ｒ，Ｇ，Ｂ，Ｗの中間調（グレイレベル）をｒ、ｇ、ｂ、ｗとすると、ｗの可能な最大値はMin.(r,g,b)で与えられる。これによると、標的色が白すなわちｒ＝ｇ＝ｂならば、Ｗフィールドだけが輝度を与え、ＷＲＧＢ系に色割れは生じないが、例えば白っぽいマゼンタ色の速動標的の場合は、改善効果に乏しい。
Regarding the post-addition permutation, for example, in the case of YBGR, white is formed by combining Y and B, which are the first and second two colors of the field. , YRGB, etc.), the color breakage reduction surface is improved. However, when the target color is a color not on the YB line, such as whitish magenta, it is not improved.
Regarding the method of determining W or Y from the RGB image data, for example in the case of W, the best measure for reducing color breakup is to assign a maximum value to the W field. That is, if the halftones (gray levels) of R, G, B, and W are r, g, b, and w, the maximum possible value of w is given by Min. (R, g, b). According to this, if the target color is white, that is, r = g = b, only the W field gives brightness and no color breakup occurs in the WRGB system. poor.
なお、四色法は、ＯＣＢモードＬＣＤに適用しにくいという難点を有する。ＯＣＢモードは光透過率制御にリタデーションを用いるので、可視波長全域にわたる一様な透過率をもたず、透過率は中間調により非線形に変化する。それゆえ、ＯＣＢモードに四色法を適用してｒ、ｇ、ｂからｗを算出するためには、上記のような単純な最小値抽出や、この他に必要な減算などの、線形計算機能では対応不可能であり、複雑な非線形計算機能をもつ計算回路が必要になるからである。
（比較例４）
比較例４は、ＲＧＢ色フィールドの組を１フレーム中で２回繰り返す方法（すなわち２倍速（ダブルレート）単純ＦＳＣ）である。この方法は、通常、ＦＳＣ ＤＭＤプロジェクタに用いられる。この方法において速動標的に眼が正しく追随する場合の視線追随積分計算方法とその計算結果を図６に示す。２倍速では１倍速（比較例１）に比べ、強い色割れ領域はほぼ半分になるが、強い純色割れ領域の隣に白みがかった虹色領域が生じる。
（本発明例）
本発明例は、２倍速単純ＦＳＣにおいて、ＲＧＢＲＧＢの２順目のＲＧＢを黒（Ｋで表す）に変更し、ＲＧＢＫＫＫとした方法である。この方法において速動標的に眼が正しく追随する場合の視線追随積分計算方法とその計算結果を図１に示す。図より、視認像の幅はＷ＋Ｓ（２＋Ａ’）／６、Ｗ／Ｓの閾値は、（２＋Ａ’）／６である。
The four-color method has a drawback that it is difficult to apply to the OCB mode LCD. Since the OCB mode uses retardation for light transmittance control, the OCB mode does not have a uniform transmittance over the entire visible wavelength range, and the transmittance changes nonlinearly depending on the halftone. Therefore, in order to calculate w from r, g, and b by applying the four-color method to the OCB mode, linear calculation functions such as simple minimum value extraction as described above, and other necessary subtraction, etc. This is because it is impossible to cope with this, and a calculation circuit having a complicated nonlinear calculation function is required.
(Comparative Example 4)
The comparative example 4 is a method of repeating a set of RGB color fields twice in one frame (that is, a double rate (double rate) simple FSC). This method is typically used for FSC DMD projectors. FIG. 6 shows the line-of-sight tracking integration calculation method and the calculation result when the eye correctly follows the fast-moving target in this method. At double speed, compared to the single speed (Comparative Example 1), the strong color break-up area is almost halved, but a whitish iridescent area appears next to the strong pure color break-up area.
(Example of the present invention)
The example of the present invention is a method in which RGB in the second order of RGBRGB is changed to black (represented by K) to be RGBKKK in the double speed simple FSC. FIG. 1 shows the line-of-sight tracking integration calculation method and the calculation result when the eye correctly follows the fast-moving target in this method. From the figure, the width of the visible image is W + S (2 + A ′) / 6, and the threshold of W / S is (2 + A ′) / 6.
上述の比較例１〜４および本発明例について、視線追随積分により求めた、前述の４つの指標（視認像の幅、Ｗ／Ｓの閾値、遅動プラトー幅、対向物体交差時の視認像の幅）をまとめて表１に示す。 About the above-mentioned comparative examples 1-4 and the example of the present invention, the above-mentioned four indices (viewing image width, W / S threshold, slow plateau width, and viewing image at the crossing of the opposing objects, which were obtained by line-of-sight integration. The width is summarized in Table 1.
表１より、比較例２（動き補間）は、視認像の幅、Ｗ／Ｓの閾値、遅動プラトー幅の３指標には全例中最善の値を示すものの、もう１つの重要な指標である対向物体交差時の視認像の幅には全例中最悪の値を示す。すなわち、動き補間法は、標的動体に眼が正しく追随している状態での色割れおよび動きボケの低減には最善の方法であるが、動画表示中に頻繁に起こる標的と対向物体との交差状態にあっては、色割れおよび動きボケをむしろ助長してしまう。 From Table 1, Comparative Example 2 (motion interpolation) is another important index, although the three values of the visual image width, the W / S threshold, and the slow plateau width show the best values in all cases. The width of the visual image at the time of crossing a certain object is the worst value among all examples. In other words, the motion interpolation method is the best method for reducing color breakup and motion blur while the eye is following the target moving object correctly, but it frequently intersects the target and the opposing object during video display. In the state, color breakup and motion blur are rather promoted.
一方、本発明例（ＲＧＢＫＫＫ）は、視認像の幅、Ｗ／Ｓの閾値、遅動プラトー幅の３指標には全例中比較例２に次ぐ良い値を示し、しかも対向物体交差時の視認像の幅には全例中最善の値を示す。この例からわかるように、本発明の色表示方法は、標的動体に眼が正しく追随している状態での色割れおよび動きボケの低減に有効であるばかりか、動画表示中に頻繁に起こる標的と対向物体との交差状態における色割れおよび動きボケを最も有効に軽減するものである。 On the other hand, in the present invention example (RGBKKK), the three indexes of the visual image width, the W / S threshold value, and the slow plateau width are the second best values after the comparative example 2 and the visual recognition when the opposing object intersects is shown. The best image width is shown in all cases. As can be seen from this example, the color display method of the present invention is effective not only in reducing color breakup and motion blur while the eye is following the target moving object correctly, but also frequently occurring during video display. Color breakage and motion blur in the state of intersection of the object and the opposite object are most effectively reduced.
前記した比較例１（１倍速単純ＦＳＣ）、比較例３（四色法）、比較例４（２倍速単純ＦＳＣ）、本発明例（ＲＧＢＫＫＫ）について、標的色を白、白っぽいマゼンタの２条件とし、各条件で標的の幅Ｗ画素と速さＳ画素／フレームを（Ｗ，Ｓ）＝（１２，６（遅））、（６，１２（速））の２通り変えて、視線追随積分（この場合は交差物体なし）を行った。なお、比較例３（四色法）は、ＲＹＧＢ，ＹＢＧＲ，ＷＲＧＢの３ケースについて計算した。計算は、これらの表示条件下の視認像の最大幅である１８画素について行った。この計算から得られた視認像の幅方向の色分布パターンを表２に示す。 For the above-mentioned Comparative Example 1 (1 × speed simple FSC), Comparative Example 3 (four-color method), Comparative Example 4 (2 × speed simple FSC), and Example of the present invention (RGBKKK), the target color is set to two conditions of white and whitish magenta. In each condition, the target width W pixel and the speed S pixel / frame are changed in two ways (W, S) = (12, 6 (slow)) and (6, 12 (speed)), and the line-of-sight tracking integration ( In this case, there was no crossing object). In Comparative Example 3 (four-color method), calculation was performed for three cases of RYGB, YBGR, and WRGB. The calculation was performed for 18 pixels, which is the maximum width of the visible image under these display conditions. Table 2 shows the color distribution pattern in the width direction of the visual image obtained from this calculation.
表２より、本発明例（ＲＧＢＫＫＫ）では、標的色、標的速さの如何にかかわらず、視認像に標的色が再現する（ただし、再現域の幅は速動標的の場合狭い）。これに対し、比較例では、速い動きの白っぽいマゼンタ標的に対し、全ての例の視認像に標的色が再現しない。また、比較例１（１倍速単純ＦＳＣ）、比較例３（四色法）のＲＹＧＢ、比較例４（２倍速単純ＦＳＣ）では、速い動きの白標的に対しても、視認像に標的色が再現しない。 From Table 2, in the example of the present invention (RGBKKK), the target color is reproduced in the visually recognized image regardless of the target color and the target speed (however, the width of the reproduction area is narrow in the case of the fast moving target). On the other hand, in the comparative example, the target color is not reproduced in the visual images of all examples with respect to the fast-moving whitish magenta target. In addition, in Comparative Example 1 (1 × speed simple FSC), Comparative Example 3 (four-color method) RYGB, and Comparative Example 4 (2 × speed simple FSC), the target image has a target color in a visually recognized white target. Does not reproduce.
このように、本発明の色表示方法によれば、色種と標的の動きの速さによらず標的の色を視認像に再現することができる。なお、これらの例では、背景色は黒であるから、表２の色分布パターン中の黒は無視して参照し、黒領域が広いほど動きボケが小さいので良いといえる。本発明例は、白っぽいマゼンタ標的に対し、表２の全例中最も広い黒領域を示しており、動きボケが最も小さくなっている。 As described above, according to the color display method of the present invention, the target color can be reproduced as a visual image regardless of the color type and the speed of movement of the target. In these examples, since the background color is black, black in the color distribution pattern in Table 2 is ignored and referred to, and it can be said that the larger the black area, the smaller the motion blur. The example of the present invention shows the widest black region in all examples in Table 2 with respect to the whitish magenta target, and the motion blur is the smallest.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006087880A JP2007264211A (en) | 2006-03-28 | 2006-03-28 | Color display method for color-sequential display liquid crystal display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006087880A JP2007264211A (en) | 2006-03-28 | 2006-03-28 | Color display method for color-sequential display liquid crystal display apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2007264211A true JP2007264211A (en) | 2007-10-11 |
Family
ID=38637272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006087880A Pending JP2007264211A (en) | 2006-03-28 | 2006-03-28 | Color display method for color-sequential display liquid crystal display apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2007264211A (en) |
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009109639A (en) * | 2007-10-29 | 2009-05-21 | Tohoku Univ | Color display method for field-sequential color liquid crystal display device |
| WO2010073562A1 (en) * | 2008-12-26 | 2010-07-01 | パナソニック株式会社 | Image processing apparatus and image display apparatus |
| JP2010145645A (en) * | 2008-12-17 | 2010-07-01 | Stanley Electric Co Ltd | Liquid crystal display device |
| WO2010106905A1 (en) | 2009-03-19 | 2010-09-23 | 財団法人２１あおもり産業総合支援センター | Field-sequential color type liquid crystal display apparatus and color display method therefor |
| CN101866624A (en) * | 2009-04-15 | 2010-10-20 | 索尼公司 | Image display device |
| WO2010143330A1 (en) * | 2009-06-10 | 2010-12-16 | シャープ株式会社 | Driving device, driving method, image display device, television receiver, display monitor device, program and record medium |
| KR20120070196A (en) * | 2010-12-21 | 2012-06-29 | 엘지디스플레이 주식회사 | Liquid crystal display device and driving method for thereof |
| JP2012129988A (en) * | 2010-11-23 | 2012-07-05 | Semiconductor Energy Lab Co Ltd | Method of driving stereoscopic image display device |
| US8537086B2 (en) | 2010-06-16 | 2013-09-17 | Semiconductor Energy Laboratory Co., Ltd. | Driving method of liquid crystal display device |
| US8564629B2 (en) | 2010-05-25 | 2013-10-22 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and driving method thereof |
| US8564529B2 (en) | 2010-06-21 | 2013-10-22 | Semiconductor Energy Laboratory Co., Ltd. | Method for driving liquid crystal display device |
| US8797371B2 (en) | 2010-12-22 | 2014-08-05 | Semiconductor Energy Laboratory Co., Ltd. | Method for driving field sequential liquid crystal display device |
| US8823754B2 (en) | 2010-04-09 | 2014-09-02 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and method for driving the same |
| US8830278B2 (en) | 2010-04-09 | 2014-09-09 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and method for driving the same |
| US8907881B2 (en) | 2010-04-09 | 2014-12-09 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and method for driving the same |
| US8988337B2 (en) | 2010-07-02 | 2015-03-24 | Semiconductor Energy Laboratory Co., Ltd. | Driving method of liquid crystal display device |
| US9047840B2 (en) | 2010-06-25 | 2015-06-02 | Semiconductor Energy Laboratory Co., Ltd. | Display device and electronic appliance |
| US9064469B2 (en) | 2010-07-02 | 2015-06-23 | Semiconductor Energy Laboratory Co., Ltd. | Method for driving liquid crystal display device |
| US9109286B2 (en) | 2010-06-18 | 2015-08-18 | Semiconductor Energy Laboratory Co., Ltd. | Method of manufacturing power storage device |
| WO2015129102A1 (en) * | 2014-02-26 | 2015-09-03 | シャープ株式会社 | Field-sequential image display device and image display method |
| US9165521B2 (en) | 2010-07-26 | 2015-10-20 | Semiconductor Energy Laboratory Co., Ltd. | Field sequential liquid crystal display device and driving method thereof |
| US9172946B2 (en) | 2010-07-27 | 2015-10-27 | Semiconductor Energy Laboratory Co., Ltd. | Method for driving liquid crystal display device displaying stereoscopic images |
| US9177510B2 (en) | 2010-08-05 | 2015-11-03 | Semiconductor Energy Laboratory Co., Ltd. | Driving method for irradiating colors of a liquid crystal display device |
| US9224339B2 (en) | 2010-07-02 | 2015-12-29 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device |
| US9230489B2 (en) | 2010-07-02 | 2016-01-05 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and method for driving liquid crystal display device |
| US9293104B2 (en) | 2010-07-02 | 2016-03-22 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device |
| US9336739B2 (en) | 2010-07-02 | 2016-05-10 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device |
| US9336727B2 (en) | 2010-11-30 | 2016-05-10 | Semiconductor Energy Laboratory Co., Ltd. | Driving method of display device |
| US9507220B2 (en) | 2010-08-06 | 2016-11-29 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and driving method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11341503A (en) * | 1998-05-28 | 1999-12-10 | Fuji Photo Film Co Ltd | Video camera |
| JP2000200063A (en) * | 1998-11-06 | 2000-07-18 | Canon Inc | Display device |
| JP2001133746A (en) * | 1999-11-08 | 2001-05-18 | Fujitsu Ltd | Liquid crystal display device |
| JP2002149134A (en) * | 2000-11-13 | 2002-05-24 | Nippon Hoso Kyokai <Nhk> | Color image display method and device |
| JP2002318564A (en) * | 2001-04-20 | 2002-10-31 | Fujitsu Ltd | Display device |
-
2006
- 2006-03-28 JP JP2006087880A patent/JP2007264211A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11341503A (en) * | 1998-05-28 | 1999-12-10 | Fuji Photo Film Co Ltd | Video camera |
| JP2000200063A (en) * | 1998-11-06 | 2000-07-18 | Canon Inc | Display device |
| JP2001133746A (en) * | 1999-11-08 | 2001-05-18 | Fujitsu Ltd | Liquid crystal display device |
| JP2002149134A (en) * | 2000-11-13 | 2002-05-24 | Nippon Hoso Kyokai <Nhk> | Color image display method and device |
| JP2002318564A (en) * | 2001-04-20 | 2002-10-31 | Fujitsu Ltd | Display device |
Cited By (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009109639A (en) * | 2007-10-29 | 2009-05-21 | Tohoku Univ | Color display method for field-sequential color liquid crystal display device |
| JP2010145645A (en) * | 2008-12-17 | 2010-07-01 | Stanley Electric Co Ltd | Liquid crystal display device |
| WO2010073562A1 (en) * | 2008-12-26 | 2010-07-01 | パナソニック株式会社 | Image processing apparatus and image display apparatus |
| EP2410509A4 (en) * | 2009-03-19 | 2013-01-02 | Aomori Support Ct For Ind Promotion | Field-sequential color type liquid crystal display apparatus and color display method therefor |
| WO2010106905A1 (en) | 2009-03-19 | 2010-09-23 | 財団法人２１あおもり産業総合支援センター | Field-sequential color type liquid crystal display apparatus and color display method therefor |
| JP2010224065A (en) * | 2009-03-19 | 2010-10-07 | 21 Aomori Sangyo Sogo Shien Center | Field-sequential color type liquid crystal display apparatus and color display method therefor |
| EP2410509A1 (en) * | 2009-03-19 | 2012-01-25 | Aomori Support Center for Industrial Promotion | Field-sequential color type liquid crystal display apparatus and color display method therefor |
| CN101866624A (en) * | 2009-04-15 | 2010-10-20 | 索尼公司 | Image display device |
| US8730277B2 (en) | 2009-06-10 | 2014-05-20 | Sharp Kabushiki Kaisha | Driving device, driving method, image display device, television receiver, display monitor device, program and record medium |
| WO2010143330A1 (en) * | 2009-06-10 | 2010-12-16 | シャープ株式会社 | Driving device, driving method, image display device, television receiver, display monitor device, program and record medium |
| US9135877B2 (en) | 2010-04-09 | 2015-09-15 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and method for driving the same |
| US9368090B2 (en) | 2010-04-09 | 2016-06-14 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and method for driving the same |
| US8823754B2 (en) | 2010-04-09 | 2014-09-02 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and method for driving the same |
| US8830278B2 (en) | 2010-04-09 | 2014-09-09 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and method for driving the same |
| US8907881B2 (en) | 2010-04-09 | 2014-12-09 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and method for driving the same |
| US8564629B2 (en) | 2010-05-25 | 2013-10-22 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and driving method thereof |
| US8537086B2 (en) | 2010-06-16 | 2013-09-17 | Semiconductor Energy Laboratory Co., Ltd. | Driving method of liquid crystal display device |
| US9109286B2 (en) | 2010-06-18 | 2015-08-18 | Semiconductor Energy Laboratory Co., Ltd. | Method of manufacturing power storage device |
| US8564529B2 (en) | 2010-06-21 | 2013-10-22 | Semiconductor Energy Laboratory Co., Ltd. | Method for driving liquid crystal display device |
| US9047840B2 (en) | 2010-06-25 | 2015-06-02 | Semiconductor Energy Laboratory Co., Ltd. | Display device and electronic appliance |
| US9293104B2 (en) | 2010-07-02 | 2016-03-22 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device |
| US9064469B2 (en) | 2010-07-02 | 2015-06-23 | Semiconductor Energy Laboratory Co., Ltd. | Method for driving liquid crystal display device |
| US8988337B2 (en) | 2010-07-02 | 2015-03-24 | Semiconductor Energy Laboratory Co., Ltd. | Driving method of liquid crystal display device |
| US9336739B2 (en) | 2010-07-02 | 2016-05-10 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device |
| US10943547B2 (en) | 2010-07-02 | 2021-03-09 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device |
| US11289031B2 (en) | 2010-07-02 | 2022-03-29 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device |
| US9224339B2 (en) | 2010-07-02 | 2015-12-29 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device |
| US9230489B2 (en) | 2010-07-02 | 2016-01-05 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and method for driving liquid crystal display device |
| US9165521B2 (en) | 2010-07-26 | 2015-10-20 | Semiconductor Energy Laboratory Co., Ltd. | Field sequential liquid crystal display device and driving method thereof |
| US9172946B2 (en) | 2010-07-27 | 2015-10-27 | Semiconductor Energy Laboratory Co., Ltd. | Method for driving liquid crystal display device displaying stereoscopic images |
| US9177510B2 (en) | 2010-08-05 | 2015-11-03 | Semiconductor Energy Laboratory Co., Ltd. | Driving method for irradiating colors of a liquid crystal display device |
| US9507220B2 (en) | 2010-08-06 | 2016-11-29 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and driving method thereof |
| US9792844B2 (en) | 2010-11-23 | 2017-10-17 | Seminconductor Energy Laboratory Co., Ltd. | Driving method of image display device in which the increase in luminance and the decrease in luminance compensate for each other |
| JP2012129988A (en) * | 2010-11-23 | 2012-07-05 | Semiconductor Energy Lab Co Ltd | Method of driving stereoscopic image display device |
| US9336727B2 (en) | 2010-11-30 | 2016-05-10 | Semiconductor Energy Laboratory Co., Ltd. | Driving method of display device |
| KR101718382B1 (en) | 2010-12-21 | 2017-03-21 | 엘지디스플레이 주식회사 | Liquid crystal display device and driving method for thereof |
| KR20120070196A (en) * | 2010-12-21 | 2012-06-29 | 엘지디스플레이 주식회사 | Liquid crystal display device and driving method for thereof |
| US8797371B2 (en) | 2010-12-22 | 2014-08-05 | Semiconductor Energy Laboratory Co., Ltd. | Method for driving field sequential liquid crystal display device |
| WO2015129102A1 (en) * | 2014-02-26 | 2015-09-03 | シャープ株式会社 | Field-sequential image display device and image display method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2007264211A (en) | Color display method for color-sequential display liquid crystal display apparatus | |
| US6970148B2 (en) | Image display method | |
| US10546543B2 (en) | Liquid crystal display device and method for driving the same | |
| WO2018120608A1 (en) | Liquid crystal display device and driving method therefor | |
| JP3766274B2 (en) | Time-division color display device and display method | |
| Lin et al. | Color breakup reduction by 180 Hz stencil-FSC method in large-sized color filter-less LCDs | |
| US10573251B2 (en) | Liquid crystal display device and method for driving the same | |
| US20060202945A1 (en) | Image display device with reduced flickering and blur | |
| TWI524321B (en) | Color display device and method | |
| WO2012099039A1 (en) | Image display device and image display method | |
| WO2009060372A2 (en) | Driving pixels of a display | |
| KR20110043453A (en) | Display device, display method and computer program | |
| Zhang et al. | A field‐sequential‐color display with a local‐primary‐desaturation backlight scheme | |
| US20110221788A1 (en) | Liquid crystal display and picture display system | |
| Sekiya et al. | L‐4: Late‐News Paper: A Simple and Practical Way to Cope With Color Breakup on Field Sequential Color LCDs | |
| JP2006293095A (en) | Liquid crystal display device and display method of liquid crystal display device | |
| KR101981530B1 (en) | Stereoscopic image display device and method for driving the same | |
| JP2011039194A (en) | Liquid crystal shutter glass and picture display system | |
| US8629821B2 (en) | Display device with faster changing side image | |
| US20090102867A1 (en) | Display method | |
| JP5879844B2 (en) | Image display device, image processing device | |
| US20100045707A1 (en) | Color sequential method for displaying images | |
| TWI394127B (en) | Method of generating control signal for compression response time | |
| WO2012043408A1 (en) | Liquid crystal display device, drive method, and display apparatus | |
| JP2017053963A (en) | Liquid crystal driving device, image display device, and liquid crystal driving program |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Effective date: 20090220 Free format text: JAPANESE INTERMEDIATE CODE: A621 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20110913 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20120403 |