JP2014517346A - 経年変化ピクセル領域を向上した推定速度で補正する適応フィードバックシステム - Google Patents
経年変化ピクセル領域を向上した推定速度で補正する適応フィードバックシステム Download PDFInfo
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Abstract
Description
本発明明細書の開示の一部に、著作権保護の対象となる内容を含む。著作権の所有者は、特許商標庁の包袋又は記録における、本発明の開示者による複写には異議を申し立てないが、これ以外についてはいかなる場合にも、著作権が留保される。
1− 初期化
2− While (true) //主ループ
3− クラスタを4ピクセル右及び下に移動、又は既に移動している場合は戻る
4− For 全色 //赤、緑、及び青
5− For 全クラスタ行 //上から下
6− For 全クラスタ列 //右から左
7− フェーズIに移行
8− 現在のクラスタ内で上から下、次に右から左の順で次の対象ピクセルを選択。最後に測定したピクセルの次から開始。既にクラスタの最後である場合、クラスタ内で右上のピクセルから開始。
9− 全EICでのクラスタの累積優先度値に基づいて、現在のクラスタの最上部及び最下部にクラスタの優先度値を分類。最も高い優先度のクラスタを追加の行ピクセル測定用に選択。
10− フリップ(遷移)の確認のために後で利用できるように、全EICの対象クラスタにおける、最後の電流比較結果を記録。
11− 対象ピクセルの測定電流と、基準電流とを比較して、そのピクセルの状態を特定(図1Cに従って特定)することによって、全EICの全ての選択行に測定を実行。
12− For 全て、ステップ9で選択されたクラスタ行
13− Ifクラスタの優先度値>30ならば、
14− 絶対ステップサイズに2を乗算、最大で8
15− 平均化フィルタ係数を2で除算、最小で4
16− Else
17− 絶対ステップサイズを2で除算、最小で1
18− 平均化フィルタ係数に2を乗算、最大で64
19− End If
20− End For
21− 絶対値、平均値、及び差分の参照テーブルを更新
22− 優先度を算出して更新
23− IfフェーズIならば、現在のクラスタに16回未満の測定を実行し、異なるEIC内の対象クラスタの一部が既にフリップしていた場合は8に移動。
24− フェーズIIに移行
25− For測定された全てのピクセル
26− Ifピクセルの状態機械が変化せず、状態が、クラスタ内の大多数のピクセルの状態と同じならば、
27− Ifクラスタの優先度値>24ならば、
28− 測定されたピクセルを取り囲む3×3個の同一色ピクセルに1を可算/減算。ただし、状態(例えば、0、1、又は2)が測定ピクセルと同じ場合。
29− 近隣の平均化フィルタ係数を2で除算、最小で4。
30− End If
31− End If
32− End For
33− If対象ピクセルの状態機械が変化せず、状態が、クラスタ内の大多数のピクセルの状態と同じならば、このクラスタ内で1回のみ
34− End If
35− End For
36− End For
37− End For
38− End While
Claims (35)
- クラスタに編成されたピクセルから成るディスプレイパネルの領域において、以前の状態又は予め測定された基準値から逸脱した領域を判別する方法であって、
第1基準が満たされるまで、第1クラスタ内の各ピクセルを少なくとも一つ走査し、
前記走査において、
前記第1クラスタ内のピクセルのうち、一つの対象ピクセルの特性を測定し、
測定特性と基準特性とを比較して、前記対象ピクセルの状態を特定し、
前記対象ピクセルの前記状態が、その対象ピクセルの以前の測定値から変化した場合に、前記第1基準が満たされたと判断することを含み、
更に、
前記第1基準が満たされたときに、少なくとも前記走査したピクセルの状態に基づいて、前記ディスプレイパネルの測定特性の逸脱を自動補正して、前記測定特性を基準特性側に変位させること、を含む方法。 - 前記ディスプレイのピクセルは、更に、複数の領域に編成され、前記領域のうちの少なくともいくつかの各領域は、ピクセルのクラスタを複数個有し、
前記走査は、各領域内の少なくとも一つのクラスタにおいて実行され、
前記第1基準は、各領域内の少なくとも一つのピクセルの状態が、その少なくとも一つのピクセルの以前の測定値から変化したときに満たされ、
前記状態は、前記対象ピクセルが経年変化していることを表す経年変化状態にあるかどうかを少なくとも示し、
前記自動補正することは、前記第1クラスタ内の少なくとも一つのピクセルの経年変化又は過剰補正を補正するものである、
請求項1に記載の方法。 - 前記測定特性は、前記対象ピクセル内の発光素子の駆動に使用される電流であり、
前記走査は、前記第1クラスタ内の右上のピクセルから開始して、左下のピクセルで終了する走査順序で実行される、
請求項1に記載の方法。 - 前記測定は、前記自動補正を実行する前に、前記第1クラスタ内の一部のピクセルのみに実行される、
請求項1に記載の方法。 - 前記第1クラスタ内で測定された各ピクセルの個々の状態の関数として、前記第1クラスタに優先度を設定し、優先度値を生成すること、を更に含む、
請求項1に記載の方法。 - 前記状態は、前記対象ピクセルが過剰補正状態にあるのかどうかを更に示し、
前記関数は、前記第1クラスタ内で測定された、過剰補正状態にあるピクセル数と、前記第1クラスタ内で測定された、経年変化状態にあるピクセル数との絶対差を求めることを含む、
請求項5に記載の方法。 - より高い優先度値が、前記第1クラスタ内で測定されるべき追加ピクセルの個数が多いことを示す優先度値に基づいて、前記第1クラスタ内で測定すべきいくつかの追加ピクセルを決定し、
前記追加ピクセルそれぞれの特性を測定して、各追加ピクセルの状態を特定すること、を更に含む、
請求項5に記載の方法。 - 前記状態は、前記対象ピクセルが過剰補正状態にあるのかどうかを更に示し、
前記関数は、前記第1クラスタ内で測定された、過剰補正状態にあるピクセル数と、前記第1クラスタ内で測定された、経年変化状態にあるピクセル数との絶対差を求めることを含み、
前記追加ピクセルの個数は、前記絶対差が、前記第1クラスタ内で追加ピクセルを測定すべきであることを表す最小閾値に満たないときにゼロである、
請求項7に記載の方法。 - 前記優先度値が閾値を越えたときに、測定されたピクセルの近隣ピクセルのうち、前記測定されたピクセルと同じ状態を共有するものに関連付けられた対応する絶対経年変化値を調整することを更に含み、
前記絶対経年変化値は、前記測定されたピクセルが経年変化した程度又は過剰補正された程度を示すものである、
請求項7に記載の方法。 - 絶対経年変化値が調整された前記近隣ピクセルそれぞれについて、その各近隣ピクセルに関連付けられた平均化フィルタ係数を減じることを更に含む、
請求項9に記載の方法。 - 前記調整は、前記測定されたピクセルの状態が経年変化状態であることに反応して、前記絶対経年変化値に1を増分し、前記測定されたピクセルの状態が過剰補正状態であることに反応して、前記絶対経年変化値に1を減分することを含む、
請求項9に記載の方法。 - 前記絶対経年変化値は、定数値によって、又は優先度値の関数として調整され、前記関数において、前記絶対経年変化値は、優先度値のより高いものについて、優先度値のより低いものよりも大きく調整される、
請求項9に記載の方法。 - 測定されたクラスタのうちの対応するクラスタ内で測定された各ピクセルの個々の状態の関数として、各領域内の少なくとも一つのクラスタに優先度を設定して、各領域に、対応する優先度値を生成すること、を更に含む、
請求項2に記載の方法。 - 前記状態は、前記対象ピクセルが過剰補正状態にあるかどうかを示し、
前記関数は、各領域内の少なくとも一つのクラスタ内で測定された、過剰補正状態にあるピクセル数と、各領域内の少なくとも一つのクラスタ内で測定された、経年変化状態にあるピクセル数との絶対差を求めることを含み、
前記絶対差は前記優先度値に対応する、
請求項13に記載の方法。 - より高い優先度値が、対応する少なくとも一つのクラスタ内で測定されるべき追加ピクセルの個数が多いことを示す優先度値に基づいて、対応する少なくとも一つのクラスタ内で測定すべきいくつかの追加ピクセルを決定すること、を更に含む、
請求項14に記載の方法。 - 前記第1クラスタ内の前記対象ピクセルは、前記第1クラスタ内の第1行に位置し、
前記走査は、1フレームの中で、第1クラスタ内の第2の対象ピクセルの特性を測定することを更に含み、
前記第2の対象ピクセルは、前記第1クラスタ内で前記第1行とは異なる第2行に位置する、
請求項1に記載の方法。 - 各追加ピクセルは、第1クラスタ内の連続した、又は連続していない異なる複数の行に存在し、
前記各追加ピクセルの特性の測定は、1フレームの中で、異なる行に位置する少なくとも2つの追加ピクセルに実行される、
請求項7に記載の方法。 - 前記状態は、前記対象ピクセルが経年変化状態であるのか、又は過剰補正状態であるのかを更に示す、
請求項1に記載の方法。 - 前記測定特性は、前記対象ピクセル内の発光素子によって引き込まれる電流であり、前記基準特性は基準電流である、
請求項1に記載の方法。 - 前記基準電流は、前記ディスプレイパネル内の基準ピクセルによって引き込まれる電流である、
請求項19に記載の方法。 - ピクセルから成るディスプレイパネルのピクセル領域の特性が、以前に測定された値又は基準値から逸脱している可能性の高い領域に優先度を設定する方法であって、
前記ディスプレイパネルのピクセルのうちの少なくとも一部のピクセルの特性を測定し、
測定されたピクセルそれぞれについて、測定特性と、対応する基準特性とを比較して、前記測定されたピクセルそれぞれの対応する状態を特定し、
各領域内の前記測定されたピクセルの状態の関数として、前記ディスプレイパネルの領域に優先度を設定して優先順序を生成し、
前記優先順序に従って、前記領域内の前記測定特性の、前記基準特性からの逸脱を自動補正すること、を含む方法。 - 第1基準が満たされるまで、第1クラスタ内の少なくともいくつかの各ピクセルを走査することを更に含み、
前記走査は、
前記測定特性と、基準特性とを比較して、前記第1クラスタ内の対象ピクセルの状態であって、対象ピクセルが経年変化していることを表す経年変化状態にあるのかどうかを少なくとも示す状態を特定し、
前記対象ピクセルの前記状態が、その対象ピクセルの以前の測定値から変化していた場合に前記第1基準が満たされたと判定すること、を含み、
前記自動補正は、前記走査されたピクセルの状態に少なくとも基づいて、前記領域の経年変化又は過剰補正を補正するものである、
請求項21に記載の方法。 - 前記ディスプレイの前記ピクセルは、更に、複数の領域に編成され、
前記領域のうちの少なくともいくつかの各領域は、ピクセルのクラスタを複数個有し、
前記走査は、各領域の少なくとも一つのクラスタにおいて実行され、
前記第1基準は、各領域内の少なくとも一つのピクセルの状態が、その少なくとも一つのピクセルの以前の測定値から変化したときに満たされる、
請求項22に記載の方法。 - 前記測定特性は、前記対象ピクセル内の発光素子の駆動に使用される電流であり、前記基準特性は基準電流であり、
前記走査は、前記第1クラスタ内の右上のピクセルから開始して左下のピクセルで終了する走査順序に従って実行される、
請求項22に記載の方法。 - 前記状態は、前記対象ピクセルが経年変化状態にあるのか、又は過剰補正状態にあるのかを示し、
前記関数は、前記第1クラスタ内で測定された、過剰補正状態にあるピクセル数と、前記第1クラスタ内で測定された、経年変化状態にあるピクセル数との絶対差を求めることを含む、
請求項22に記載の方法。 - 前記優先度の設定は、前記第1クラスタ内で測定された各ピクセルの個々の状態の関数として、前記第1クラスタに優先度を設定して、優先度値を生成することを含み、
前記方法は、
より高い優先度値が、第1クラスタ内で測定されるべき追加ピクセルの個数が多いことを示す前記優先度値に基づいて、前記第1クラスタ内で測定すべきいくつかの追加ピクセルを決定し、
各追加ピクセルの特性を測定して、前記追加ピクセルそれぞれの状態を特定することを更に含む、
請求項22に記載の方法。 - 前記状態は、前記対象ピクセルが経年変化状態にあるのか、又は過剰補正状態にあるのかを示し、
前記関数は、前記第1クラスタ内で測定された、過剰補正状態にあるピクセル数と、前記第1クラスタ内で測定された、経年変化状態にあるピクセル数との絶対差を求めることを含み、
前記追加ピクセルの個数は、前記絶対差が、前記第1クラスタ内で追加ピクセルを測定すべきであることを表す最小閾値に満たないときにゼロである、
請求項26に記載の方法。 - 前記状態は、前記対象ピクセルが経年変化状態であるのか、又は過剰補正状態であるのかを示し、
前記方法は、前記優先度値が閾値を越えたときに、前記測定されたピクセルの近隣ピクセルのうち、前記測定ピクセルと同じ状態を共有するものに関連付けられた対応する絶対経年変化値を調整することを更に含み、
前記絶対経年変化値は、ピクセルが経年変化している程度又は過剰補正された程度を示す値に対応する、
請求項26に記載の方法。 - 絶対経年変化値が調整された前記近隣ピクセルそれぞれについて、その各近隣ピクセルに関連付けられた平均化フィルタ係数を減じることを更に含む、
請求項28に記載の方法。 - 前記調整は、前記測定されたピクセルの状態が経年変化状態であることに反応して、前記絶対経年変化値に1を増分し、前記測定されたピクセルの状態が過剰補正状態であることに反応して、前記絶対経年変化値に1を減分することを含む、
請求項28に記載の方法。 - 前記絶対経年変化値は、定数値によって、又は前記優先度値の関数として調整され、前記関数において、絶対経年変化値は、優先度値のより高いものについて、優先度値のより低いものよりも大きく調整される、
請求項28に記載の方法。 - ピクセルのクラスタに編成されたディスプレイパネルにおいて、ピクセルの既知の測定値を用いて、前記ディスプレイパネルの近隣ピクセルの推定経年変化を更新する方法であって、
前記ディスプレイパネルのクラスタのうちの第1クラスタ内の各ピクセルの特性を測定し、
前記クラスタ内の各ピクセルについて、そのピクセルの測定特性と基準特性とを比較し、ピクセルの状態であって、ピクセルが経年変化状態にあるのか、過剰補正状態にあるのか、又はそのいずれでもない状態にあるのかを表す状態を特定し、
前記クラスタ内の選択ピクセルの状態が、その選択ピクセルの以前の測定値から不変であり、且つ、その選択ピクセルの状態が、前記クラスタ内の大多数の他のピクセルの状態と同じである場合に、前記選択ピクセルの近隣ピクセルに関連付けられた対応する経年変化値であって、各経年変化値がピクセルの経年変化状態又は緩和状態を表し、且つ、前記ディスプレイパネルに連結されたメモリ内に格納される経年変化値を調整し、
前記近隣ピクセルの前記経年変化値に少なくとも部分的に基づいて、前記ディスプレイパネルの経年変化又は緩和を自動補正することを含む、方法。 - 経年変化値が調整された前記近隣ピクセルそれぞれについて、その各近隣ピクセルに関連付けられた平均化フィルタの係数を減じることを更に含む、
請求項32に記載の方法。 - 前記近隣ピクセルは前記選択ピクセルに直接隣接している、
請求項32に記載の方法。 - ピクセルを有し、複数のピクセルクラスタに分割されるディスプレイパネルの領域を選択的に走査する方法であって、
第1フェーズにおいて、第1基準が満たされるまで、前記クラスタのうちの少なくともいくつかを走査し、
前記走査において、
ピクセル走査順序に従って走査されているクラスタ内の対象ピクセルの特性を測定し、
測定特性と基準特性とを比較して、対象ピクセルの状態であって、前記対象ピクセルが経年変化状態にあるのか、緩和状態にあるのか、そのいずれでもない状態にあるのかを示す状態を生成し、
前記対象ピクセルの状態が、その対象ピクセルの以前の状態と異なる場合に、前記第1基準が満たされたと判定し、
前記クラスタ内の所定数の対象ピクセルが走査されたときに、前記第1基準が満たされたと判定することを含み、
更に、
前記第1基準が満たされたときに、前記クラスタのうちの少なくとも一つを更に走査すること、を含み、
前記更に走査することは、
走査しているクラスタの経年変化の程度又は緩和の程度の関数として、追加ピクセルを走査する優先度を決定し、
走査しているクラスタ内のいくつかの追加の対象ピクセルであって、その追加の対象ピクセルの個数は前記優先度の関数である、追加の対象ピクセルの特性を測定し、
前記対象ピクセルの状態が、走査しているクラスタ内の大多数の他のピクセルの状態と同じであるときに、前記対象ピクセルの近隣ピクセルに関連付けられた対応する経年変化値であって、各経年変化値が、ピクセルの経年変化状態又は緩和状態を示し、且つメモリに格納された経年変化値を調整することを含む、方法。
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EP2715709A4 (en) | 2015-04-08 |
CN105810135B (zh) | 2019-04-23 |
US9978297B2 (en) | 2018-05-22 |
US9640112B2 (en) | 2017-05-02 |
US20160379563A1 (en) | 2016-12-29 |
US9466240B2 (en) | 2016-10-11 |
CN103562987B (zh) | 2016-05-25 |
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US20170193873A1 (en) | 2017-07-06 |
CN103562987A (zh) | 2014-02-05 |
WO2012160424A1 (en) | 2012-11-29 |
EP2715709A1 (en) | 2014-04-09 |
US20180240385A1 (en) | 2018-08-23 |
US10706754B2 (en) | 2020-07-07 |
CN105810135A (zh) | 2016-07-27 |
JP6254077B2 (ja) | 2017-12-27 |
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