JP4029079B2 - プラズマディスプレイパネルの駆動方法とプラズマ表示装置 - Google Patents
プラズマディスプレイパネルの駆動方法とプラズマ表示装置 Download PDFInfo
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- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
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- G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
- G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
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- G09G3/2007—Display of intermediate tones
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- G09G3/2927—Details of initialising
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
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- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
- G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
- G09G3/298—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels using surface discharge panels
- G09G3/2983—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels using surface discharge panels using non-standard pixel electrode arrangements
- G09G3/2986—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels using surface discharge panels using non-standard pixel electrode arrangements with more than 3 electrodes involved in the operation
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Description
この期間には、X電極に一定の電位(Vbias)を印加た状態で、Y電極に維持放電電圧(Vs)から接地電位までゆっくり下降する下降ランプを印加し、以前の維持期間で形成された壁電荷を除去する。
この期間にはアドレス電極及びX電極を0Vに維持し、Y電極に電圧Vsから電圧Vsetに向かってなだらかに上昇するランプ電圧を印加する。このランプ電圧が上昇する間に全ての放電セルではY電極からアドレス電極及びX電極に各々微弱なリセット放電が起こる。その結果、Y電極に(-)壁電荷が蓄積され、同時にアドレス電極及びX電極に(+)壁電荷が蓄積される。
次に、リセット期間の後半にはX電極を定電圧Vbiasに維持した状態で、Y電極に電圧Vsから接地電圧に向かってなだらか(漸次)に下降するランプ電圧を印加する。このランプ電圧が下降する間、再び全ての放電セルで微弱なリセット放電が起こる。
また、リセット期間に発生するリセット光の量を減少させてコントラストを向上させるプラズマディスプレイパネルの駆動方法を提供することである。
また、リセット期間の下降波形期間にX電極とY電極のうちの一つの電極のみにVxeまたはVye電圧を印加することによって下降波形期間の発光量(放電量)を1/2に減らすことができる。これを通じて、リセット期間の下降波形期間で発生する発光量を減らすことによって維持放電しない放電セルの輝度を減少させてコントラス比を向上できる。
この期間は以前の維持放電期間に形成された壁電荷を消去する役割を果たす。本発明の実施例によると、維持放電期間の最後の時点にX電極に維持放電電圧パルスが印加され、Y電極にはX電極に印加された電圧より低い電圧(例えば、接地電圧)が印加されていたと仮定する。これにより、図5(A)のように、Y電極(Y)及びアドレス電極(A)には(+)壁電荷が形成され、X電極(X)及びM電極(M)には(-)壁電荷が形成されている。
この期間は継続して、X電極及びY電極を接地電圧にバイアスさせた状態で、M電極には電圧Vmdを印加して直ちにVsetまで緩慢に上昇し維持する波形(ランプ波形またはログ波形)を印加する。この上昇波形が印加される間、全ての放電セルではM電極からアドレス電極、X電極及びY電極に向かって各々微弱なリセット放電が起こる。その結果、図5(B)に示したように、M電極に(-)壁電荷が蓄積され、同時にアドレス電極、X電極及びY電極には(+)壁電荷が蓄積される。
次に、リセット期間の後半に入り、X電極及びY電極を各々VxeとVyeにバイアスさせた状態で、M電極を電圧Vmeに下げてから接地電圧に向かって緩慢に下降する波形(ランプ波形またはログ波形)を印加する。この時、Vxe=Vye、Vmd=Vmeに設定することが回路構成を簡単にできるという点で好ましいが、必ずこれに限るわけではない。
アドレス期間では複数のM電極をVsc電圧にバイアスさせた状態でM電極に順次にスキャンパルス電圧(例えば、接地電圧)を印加し、同時にアドレス電極には放電を望むセル(つまり、発光セル)にアドレスパルス電圧を印加する。この時、X電極は接地電圧に維持し、Y電極には正電圧Vyeを印加する(つまり、Y電極にX電極の電圧より高い電圧を印加する。)。
本発明の実施例による維持放電期間によると、M電極を維持放電電圧Vmにバイアスさせた状態で、X電極及びY電極に維持放電電圧パルスVsを交代に印加する。このような電圧の印加を通じてアドレス期間で選択された放電セルには維持放電が起こるようになる。
維持放電の始まり期間では図6の(a)、(b)に示したように、X電極に(+)電圧パルスが印加されてY電極に(-)電圧パルスが印加されるが(ここで、+及び-の符号はX電極に印加された電圧とY電極に印加された電圧の大きさを比較した相対的である概念であって、X電極に+パルス電圧が印加されたという意味はX電極にY電極より大きい電圧が印加されたということを意味する。)、同時にM電極に(+)電圧パルスが印加される。従って、X電極及びY電極の間でだけ放電が起こる従来とは違い、X電極/M電極とY電極との放電が起こるようになる。特に、本発明の実施例によると、X電極及びY電極の間の距離よりM電極とY電極の間の距離が更に近いために、M電極とY電極の間に印加される電界が更に大きくなる。従って、M電極とY電極の間の放電がX電極とY電極の間の放電より主導的な役割を果たす。このように、本発明の実施例では維持放電初期に相対的に距離が短いM電極とY電極の間の放電が主導的な役割を果たすとして、ショートギャップ放電だと称することである。
維持放電の第1維持放電パルス印加後には、M電極の電圧が一定の電圧(Vs)でバイアスされるために、M電極とX電極の間の放電またはM電極とY電極の間の放電(つまり、ショートギャップ放電)は放電に寄与する程度が小さくて主放電はX電極及びY電極の間の放電になって、結局、X電極及びY電極に交代に印加される放電パルス数により入力された映像を示すことができるようになる。
42 第2基板
44 第1誘電体層
44’ 第2誘電体層
45 保護膜
46 バス電極
47 隔壁
48 蛍光体
49 放電空間
53 X電極
54 Y電極
55 アドレス電極
56 中間電極
Claims (14)
- 維持放電電圧パルスが各々印加される第1電極及び第2電極と、前記第1電極及び第2電極の間に形成される第3電極を含むプラズマディスプレイパネルの駆動方法において、
リセット期間中に、
(a)前記第3電極に第1電圧から第2電圧まで漸次に下降する電圧を印加する段階と、
(b)前記漸次に下降する電圧が印加する間に、前記第1電極に前記第2電圧より大きい第3電圧を印加する段階と、
(c)前記漸次に下降する電圧が印加する間に、前記第2電極に前記第3電圧より低い第4電圧を印加する段階とを有し、
アドレス期間では前記第1電極に前記第3電圧をバイアスさせることを特徴とするプラズマディスプレイパネルの駆動方法。 - 前記第4電圧は接地電圧であることを特徴とする請求項1に記載のプラズマディスプレイパネルの駆動方法。
- 前記第4電圧は負の電圧レベルであることを特徴とする請求項1に記載のプラズマディスプレイパネルの駆動方法。
- 維持放電期間で、前記第2電極に第1維持放電パルス電圧を印加することを特徴とする請求項1または請求項2に記載のプラズマディスプレイパネルの駆動方法。
- アドレス期間で、前記第1電極に前記第4電圧以上の電圧をバイアスさせることを特徴とする請求項1または請求項2に記載のプラズマディスプレイパネルの駆動方法。
- 第1基板及び第2基板と、
前記第1基板に各々形成される第1電極と第2電極と、
前記第1電極と第2電極の間に形成される第3電極と、
前記第2基板に形成され、前記第1電極、前記第2電極及び前記第3電極と交差する方向に形成されたアドレス電極と、
隣接した前記第1電極、前記第2電極、前記第3電極及び前記アドレス電極によって形成される放電セルを含むプラズマディスプレイパネルの前記放電セルを放電させるために前記第1電極、第2電極、第3電極及びアドレス電極に駆動電圧を供給する駆動回路を含み、
前記駆動回路はリセット期間中に、前記第3電極に第1電圧から第2電圧まで緩慢に下降する電圧を印加し、前記第1電極に前記第2電圧より大きい第3電圧を印加し、前記第2電極に前記第3電圧より低い第4電圧を印加することを特徴とするプラズマ表示装置。 - 前記第4電圧は接地電圧であることを特徴とする請求項6に記載のプラズマ表示装置。
- 前記第4電圧は負の電圧レベルであることを特徴とする請求項6または請求項7に記載のプラズマ表示装置。
- 維持放電期間で、前記第2電極に第1維持放電パルス電圧を印加することを特徴とする請求項6または請求項7に記載のプラズマ表示装置。
- 維持放電電圧パルスが各々印加される第1電極及び第2電極と、前記第1電極及び第2電極の間に形成される第3電極を含むプラズマディスプレイパネルの駆動方法において、
(a)第1サブフィールドのリセット期間中に、
前記第1電極(X)に第1電圧及び前記第2電極Yに前記第1電圧より大きい第2電圧をバイアスした状態で、前記第3電極に前記第1電圧より大きい第3電圧から第4電圧まで時間によって変わる、下降する電圧を印加する段階と、
(b)第2サブフィールドのリセット期間中に、
前記第1電極(X)に前記第4電圧より大きい第5電圧及び前記第2電極Yに前記第5電圧より低い第6電圧をバイアスした状態で、前記第3電極に前記第6電圧より大きい第7電圧から第8電圧まで時間によって変わる、下降する電圧を印加する段階と、
を有することを特徴とするプラズマディスプレイパネルの駆動方法。 - 前記第1サブフィールドは第1フレームに含まれ、前記第2サブフィールドは第2フレームに含まれることを特徴とする請求項10に記載のプラズマディスプレイパネルの駆動方法。
- 所定のフレーム単位で前記段階(a)と段階(b)が交互に動作することを特徴とする請求項11に記載のプラズマディスプレイパネルの駆動方法。
- 前記第1及び第2サブフィールドは一つのフレーム内に含まれるサブフィールドであり、サブフィールド単位で前記段階(a)及び段階(b)が交代に動作することを特徴とする請求項10に記載のプラズマディスプレイパネルの駆動方法。
- 前記第1電圧と前記第6電圧は同一な電圧レベルであり、前記第2電圧と前記第5電圧は同一な電圧レベルであることを特徴とする請求項10に記載のプラズマディスプレイパネルの駆動方法。
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KR1020030086091A KR100560474B1 (ko) | 2003-11-29 | 2003-11-29 | 플라즈마 디스플레이 패널의 구동 방법 및 플라즈마 표시장치 |
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JP (1) | JP4029079B2 (ja) |
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CN (1) | CN100369085C (ja) |
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KR100637456B1 (ko) * | 2004-02-05 | 2006-10-20 | 삼성에스디아이 주식회사 | 플라즈마 디스플레이 패널 |
JP4603879B2 (ja) * | 2004-12-28 | 2010-12-22 | 日立プラズマディスプレイ株式会社 | プラズマディスプレイパネルの駆動方法および駆動回路、並びに、プラズマディスプレイ装置 |
KR100766747B1 (ko) * | 2006-03-23 | 2007-10-12 | 한국과학기술원 | 4전극 구조를 갖는 교류 플라즈마 디스플레이 패널의구동방법 및 이를 이용한 플라즈마 디스플레이 패널 |
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KR100341313B1 (ko) * | 1998-11-16 | 2002-06-21 | 구자홍 | 플라즈마 디스플레이 패널과 구동장치 및 방법 |
KR100319095B1 (ko) * | 1999-03-02 | 2002-01-04 | 김순택 | 보조 전극을 갖는 플라즈마 표시 패널의 구동 방법 |
US7227513B2 (en) * | 1999-11-15 | 2007-06-05 | Lg Electronics Inc | Plasma display and driving method thereof |
US7133005B2 (en) * | 2000-07-05 | 2006-11-07 | Lg Electronics Inc. | Plasma display panel and method and apparatus for driving the same |
JP2002110047A (ja) * | 2000-09-29 | 2002-04-12 | Fujitsu Hitachi Plasma Display Ltd | プラズマディスプレイ装置 |
KR20020035699A (ko) * | 2000-11-07 | 2002-05-15 | 구자홍 | 플라즈마 디스플레이 패널 및 그 구동방법 |
KR100426186B1 (ko) * | 2000-12-28 | 2004-04-06 | 엘지전자 주식회사 | 플라즈마 디스플레이 패널 및 그 구동방법 |
US6791516B2 (en) * | 2001-01-18 | 2004-09-14 | Lg Electronics Inc. | Method and apparatus for providing a gray level in a plasma display panel |
DE10162258A1 (de) * | 2001-03-23 | 2002-09-26 | Samsung Sdi Co | Verfahren und Vorrichtung zum Betreiben einer Plasmaanzeige |
FR2826166B1 (fr) * | 2001-06-13 | 2003-08-29 | Thomson Plasma | Procede de pilotage d'un panneau a plasma a decharges d'entretien co-planaires entre des electrodes en triades |
JP2003151445A (ja) * | 2001-11-09 | 2003-05-23 | Pioneer Electronic Corp | プラズマディスプレイパネルおよびその駆動方法 |
JP4140685B2 (ja) * | 2001-12-14 | 2008-08-27 | 株式会社日立製作所 | プラズマディスプレイパネル |
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KR100560474B1 (ko) | 2006-03-13 |
JP2005165269A (ja) | 2005-06-23 |
US20050116899A1 (en) | 2005-06-02 |
CN1652178A (zh) | 2005-08-10 |
KR20050052227A (ko) | 2005-06-02 |
CN100369085C (zh) | 2008-02-13 |
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