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TWI733246B - 電光顯示器 - Google Patents

電光顯示器 Download PDF

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Publication number
TWI733246B
TWI733246B TW108140715A TW108140715A TWI733246B TW I733246 B TWI733246 B TW I733246B TW 108140715 A TW108140715 A TW 108140715A TW 108140715 A TW108140715 A TW 108140715A TW I733246 B TWI733246 B TW I733246B
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Taiwan
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display
electro
pixel
optical
display pixels
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TW108140715A
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TW202103133A (zh
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何志祥
盧毅
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美商電子墨水股份有限公司
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    • G09G3/20—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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/3433—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 by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
    • G09G3/344—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 by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices
    • G09G3/3446—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 by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices with more than two electrodes controlling the modulating element
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Abstract

一種用於驅動電光顯示器之設備可包括間隔之第一與第二裝置層及顯示像素的第一與第二列，每一列可包含：複數個顯示像素，每一顯示像素具有位於該第一裝置層上用於驅動該顯示像素之一像素電極；位於該第二裝置層上且與該複數個顯示像素之一部分之像素電極重疊之一傳導線；及至少一個傳導路徑，其連接該第一列之傳導線至該等顯示像素的第二列之一傳導線。

Description

電光顯示器
本申請案係關於2018年11月9日提出之美國臨時申請案62/757,818且主張對其之優先權。
前述申請案之全文以參照方式併入本文。
本發明係關於電光顯示器設備，尤其是包含薄膜電晶體陣列之顯示器背板。
粒子系之電泳顯示器已成為密集研發主題多年。在此類顯示器中，複數個帶電粒子(有時稱之為顏料粒子)在電場影響下移動經過流體。電場一般係由導電膜或電晶體如場效電晶體提供。相較於液晶顯示器，電泳顯示器具有高亮度及對比度、廣視角、雙穩態及低功耗。但此類電泳顯示器較LCD顯示器之切換速度慢，且電泳顯示器一般在顯示即時視頻時過慢。此外，電泳顯示器在低溫下會因流體黏度限制了電泳粒子移動而遲緩。雖有這些缺點，電泳顯示器見於日常產品如電子書(電子閱讀器)、行動電話及行動電話蓋、智慧卡、標誌、錶、貨架標籤及快閃驅動器。
許多市售電泳介質基本上僅顯示兩種顏色，以介於黑與白色極端間之漸變，已知為「灰階」。此電泳介質使用具第一顏色之單一類型電泳粒子於具第二不同顏色之有色流體中(在此情況下，當粒子鄰近顯示器觀看表面時顯示第一種顏色，及當粒子遠離顯示器觀看表面時顯示第二種顏色)，或是具第一與第二顏色之第一與第二型電泳粒子於無色流體中。在後者情況下，當第一類粒子鄰近顯示器觀看表面時顯示第一種顏色，及當第二類粒子鄰近顯示器觀看表面時顯示第二種顏色。一般這兩種顏色係黑與白。
雖然看似簡單，電泳介質及電泳裝置顯示複雜行為。例如已發現單純的「導通/關閉」電壓脈衝不足以在電子閱讀器中達成高品質文字。反之，需要以複雜「波形」驅動狀態間之粒子，並確保新顯示的文字未保留先前文字記憶，亦即「鬼影」。
本發明提供一種電光顯示器，其具有間隔之第一與第二裝置層及顯示像素的一第一與第二列，每一列包括：複數個顯示像素，每一顯示像素具有位於該第一裝置層上用於驅動該顯示像素之一像素電極；位於該第二裝置層上且與該複數個顯示像素之一部分之像素電極重疊之一傳導線；及至少一個傳導路徑，其連接該第一列之傳導線至該等顯示像素的第二列之一傳導線。
如前述，此處呈現之主題提供用以降低電容耦合且改善電光顯示器性能之方法及手段。
術語「電光」適用於材料或顯示器，此處採用其在成像技術中的習知意義，係指具有至少一光學性質相異之第一與第二顯示狀態之材料，藉由施加電場至該材料使其自第一顯示狀態變為第二顯示狀態。雖然一般人眼可見的光學性質是顏色，但亦可係其他光學性質如光學穿透性、反射率、照度，或是對於供機器讀取之顯示器而言，在可見光範圍外之電磁波長之 反射率變化意義上的假色(pseudo-color)。
術語「灰階狀態」在此處採用其在成像技術中的習知意義，係指介於像素之兩極端光學狀態間的狀態，且非必意指兩極端狀態間之黑白過渡。例如，以下參考之數個E Ink專利與公開申請案中所述電泳顯示器之極端狀態係白與深藍，故中間的「灰階狀態」實際係指淡藍。如前述，光學狀態變化確實可非顏色變化。術語「黑」與「白」在此後可用以指稱顯示器之兩極端光學狀態，且應被視於一般包含非僅黑與白之極端光學狀態，例如前述的白與深藍狀態。術語「單色」在此後可指稱僅將像素驅動至無中間灰階狀態之兩極端光學狀態之驅動機制。
術語「雙穩的」及「雙穩態」在此處採用其在此技術中的習知意義，係指顯示器包括具有至少一光學性質相異之第一與第二顯示狀態之顯示單元(display elements)，且使得在以有限期程定址脈衝驅動任何給定單元後，假定其處於第一或第二顯示狀態，在終止定址脈衝後，該狀態將持續至少數倍(例如至少4倍)於改變顯示單元狀態所需定址脈衝最低期程。在美國專利申請案號2002/0180687(亦參照對應的國際專利申請案公開號WO 02/079869)中顯示有些具灰階之粒子系之電泳顯示器，不僅在極端黑白狀態下穩定，在其中間的灰階狀態亦然，且此對於一些其他類型的電光顯示器亦同。此類顯示器適合稱之為「多穩態」而非雙穩態，然為便利之故，術語「雙穩態」在此可用以涵蓋雙穩態及多穩態顯示器。
術語「突波(impulse)」在此處採用其習知意義，係指電壓對時間之積分。但有些雙穩態電光介質充作電荷傳感器，且具此介質可採用突波之一替代定義，亦即電流對時間的積分(其等於所施加的總電荷)。應視介質是否充做電壓-時間突波傳感器或電荷突波傳感器而採適當突波定義。
受讓予或在麻省理工學院(MIT)及E Ink Corporation名下之多個專利及申請案中描述囊封型電泳介質。此囊封型介質包括多個小膠囊，其每一者本身包括一內相及圍繞該內相之一膠囊壁，該內相包含懸浮在流體懸浮介質中之電泳行動粒子。膠囊一般本身固定於聚合物黏合劑中，形成位於兩電極間之相干層。這些專利及申請案中所述技術包含：
(a)電泳粒子、流體及流體添加物；詳見如美國專利案號7,002,728及7,679,814；
(b)膠囊、黏合劑及囊封處理；詳見如美國專利案號6,922,276及7,411,719；
(c)微胞結構、壁材料及形成微胞之方法；詳見如美國專利案號7,072,095及9,279,906；
(d)用於填充及密封微胞之方法；詳見如美國專利案號7,144,942及7,715,088；
(e)包含電光材料之膜及子總成；詳見如美國專利案號6,982,178及7,839,564；
(f)用於顯示器之背板、黏著層及其他輔助層及方法；詳見如美國專利案號D485,294； 6,124,851； 6,130,773； 6,177,921； 6,232,950； 6,252,564； 6,312,304； 6,312,971； 6,376,828； 6,392,786； 6,413,790； 6,422,687； 6,445,374； 6,480,182； 6,498,114； 6,506,438； 6,518,949； 6,521,489； 6,535,197； 6,545,291； 6,639,578； 6,657,772； 6,664,944； 6,680,725； 6,683,333； 6,724,519； 6,750,473； 6,816,147； 6,819,471； 6,825,068； 6,831,769； 6,842,167； 6,842,279； 6,842,657； 6,865,010； 6,873,452； 6,909,532； 6,967,640； 6,980,196； 7,012,735； 7,030,412； 7,075,703； 7,106,296； 7,110,163； 7,116,318； 7,148,128； 7,167,155； 7,173,752； 7,176,880； 7,190,008； 7,206,119； 7,223,672； 7,230,751； 7,256,766； 7,259,744； 7,280,094； 7,301,693； 7,304,780； 7,327,511； 7,347,957； 7,349,148； 7,352,353； 7,365,394； 7,365,733； 7,382,363； 7,388,572； 7,401,758； 7,442,587； 7,492,497； 7,535,624； 7,551,346； 7,554,712； 7,583,427； 7,598,173； 7,605,799； 7,636,191； 7,649,674； 7,667,886； 7,672,040； 7,688,497； 7,733,335； 7,785,988； 7,830,592； 7,843,626； 7,859,637； 7,880,958； 7,893,435； 7,898,717； 7,905,977； 7,957,053； 7,986,450； 8,009,344； 8,027,081； 8,049,947； 8,072,675； 8,077,141； 8,089,453； 8,120,836； 8,159,636； 8,208,193； 8,237,892； 8,238,021； 8,362,488； 8,373,211； 8,389,381； 8,395,836； 8,437,069； 8,441,414； 8,456,589； 8,498,042； 8,514,168； 8,547,628； 8,576,162； 8,610,988； 8,714,780； 8,728,266； 8,743,077； 8,754,859； 8,797,258； 8,797,633； 8,797,636； 8,830,560； 8,891,155； 8,969,886； 9,147,364； 9,025,234； 9,025,238； 9,030,374； 9,140,952； 9,152,003； 9,152,004；9,201,279；9,223,164；9,285,648；及9,310,661；及美國專利申請案公開號2002/0060321；2004/0008179； 2004/0085619； 2004/0105036； 2004/0112525； 2005/0122306； 2005/0122563； 2006/0215106； 2006/0255322； 2007/0052757； 2007/0097489； 2007/0109219； 2008/0061300； 2008/0149271； 2009/0122389； 2009/0315044； 2010/0177396； 2011/0140744； 2011/0187683； 2011/0187689； 2011/0292319； 2013/0250397； 2013/0278900； 2014/0078024； 2014/0139501； 2014/0192000； 2014/0210701； 2014/0300837； 2014/0368753； 2014/0376164； 2015/0171112； 2015/0205178； 2015/0226986； 2015/0227018； 2015/0228666； 2015/0261057； 2015/0356927； 2015/0378235； 2016/077375； 2016/0103380；及2016/0187759；及國際申請案公開號WO 00/38000；歐洲專利號1,099,207 B1及1,145,072 B1；
(g)顏色形成及顏色調整；詳見如美國專利案號7,075,502及7,839,564；
(h)用於驅動顯示器之方法；詳見如美國專利案號7,012,600及7,453,445；
(i)顯示器之應用；詳見如美國專利案號7,312,784及8,009,348；
(j)非電泳顯示器；見於美國專利案號6,241,921及美國專利申請公開案號2015/0277160；及美國專利申請公開案號2015/0005720及2016/0012710。
所有上述專利及專利申請案之全文均以參照的方式併入本文。
許多前述專利及申請案咸認在囊封式電泳介質中圍繞離散微膠囊的壁可以連續相取代，因而產生所謂的聚合物分散式電泳顯示器，其中電泳介質包括電泳流體之複數個離散液滴及聚合材料之一連續相，及在聚合物分散式電泳顯示器內之電泳流體之離散液滴可視為膠囊或微膠囊，即使並無與每一個別液滴相關聯之離散膠囊薄膜亦然；詳見如美國公開案號2002/0131147。因此，為達 本申請案之目的，將此聚合物分散式電泳介質視為囊封是電泳介質之亞種。
囊封型電泳顯示器一般不受傳統電泳裝置之叢集與定型錯誤模式之擾，且提供進一步的優點如在多種撓性及剛性基板上印刷或塗布顯示器之能力。(使用字眼「印刷」係為涵括所有形式之印刷及塗布，包含但不限於：預計量塗層如貼片模頭塗層、狹縫或擠出塗層、滑動或級聯塗層、幕簾塗層；輥塗如刮刀式輥塗、正向和反向輥塗；凹版塗層；浸塗；噴塗；彎月面塗層；旋塗；刷塗；氣刀塗層；絲網印刷處理；靜電印刷處理；熱印刷處理；噴墨印刷處理；及其他類似技術。)因此，所得顯示器可具撓性。此外，由於可印刷(利用多種方法)顯示器介質，故顯示器本身造價不高。
一種相關類型之電泳顯示器係所謂的「微胞」電泳顯示器。在一微胞電泳顯示器中，帶電粒子與懸浮流體並未囊封於微膠囊內，而係維持在一載體介質如聚合膜內形成之複數個孔穴內。見如國際申請案公開號WO 02/01281及公開之美國申請案號2002/0075556，兩案均受讓予Sipix Imaging, Inc.。
前述類型之電光顯示器係雙穩態且一般用於反射模式，但在部分前述專利及申請案中的描述指出此類顯示器可於「快門模式」下操作，其中電光介質用於調變光傳輸，使得顯示器在傳輸模式下操作。液晶(包含聚合物分散液晶)當然亦係電光介質，但一般非雙穩態且於傳輸模式下操作。下述本發明之特定實施例經限定使用反射型顯示器，但其他可併用反射型與傳輸型顯示器，包含習知液晶顯示器。
顯示器是反射型或傳輸型及是否採用電光介質，均係雙穩態，以獲得高解析度顯示，顯示器之個別像素須可定址而不受鄰近像素干擾。一種達成此目的之方式係提供非線性單元如電晶體或二極體之陣列，具有與每一像素相關聯之至少一個非線性單元，以產生「主動矩陣型」顯示器。定址一像素之一定址或像素電極以相關非線性單元連接至一適當電壓源。一般當非線性單元係電晶體時，像素電極連接至電晶體汲極，且在下述中均假定按此配置，但基本上可任意且像素電極可連接至電晶體源極。習知在高解析度陣列中，像素以列與行之二維陣列配置，使得任何特定像素均專由一特定列與一特定行之交點界定。在每一行中所有電晶體的源極均連接至單一行電極，而在每一列中所有電晶體的閘極均連接至單一列電極；對列之源極及對行之閘極指定以往基本上係任意，且若需要可相反。列電極連接至列驅動器，其基本上確保在任何給定時刻僅選擇一列，亦即施加電壓至所選列電極，使得以確保所選列中的所有電晶體均導通，同時對所有其他列施加之電壓使得以確保在這些未選列中的所有電晶體均不導通。行電極連接至行驅動器，選擇施加於各行電極之電壓以驅動所選列中的像素至所要的光學狀態。(前述電壓係相對於共用前電極，其設置於非線性陣列之電光介質之相對側上且涵蓋整個顯示器而延伸。)在已知為「線定址時間」之預選時段後，所選列被斷選，選擇次一列，且改變行驅動器上的電壓至寫入顯示器之次一線之電壓。重複此處理使得逐列寫入整個顯示器。
製造主動矩陣型顯示器之處理業已完備。例如可利用個沉積及微影技術製造薄膜電晶體。電晶體包含一閘極電極、一絕緣介電質、一半導體層及源極與汲極電極。施加電壓至閘極電極提供跨介電層之電場，其大幅增加半導體層之源極至汲極導電率。此改變使得源極與極極電極間導電。一般而言，閘極電極、源極電極與汲極電極經圖案化。概言之，半導體層亦經圖案化使得相鄰電路單元間之雜散傳導(亦即串擾)最小化。
液晶顯示器通常採用非晶矽(「a-Si」)薄膜電晶體(「TFT」)做為顯示器像素之切換裝置。此等TFT一般具有下閘極構造。在一像素內，薄膜電容器一般保持由切換TFT轉移之電荷。電泳顯示器可利用具電容器之類似TFT，但電容器功能與液晶顯示器中的電容器具些許差異；詳見前述同時待審之申請案序號09/565,413及公開案2002/0106847與2002/0060321。可製造具高性能之薄膜電晶體。但製程耗費不貲。
在TFT定址陣列中，在線定址時間期間經由TFT將像素電極充電。在線定址時間期間，藉由改變所施加之閘極電壓將TFT切換至導電狀態。例如對於n型TFT，切換閘極電壓至「高」狀態以切換TFT至導電狀態。
此外，可能因供應驅動波形至顯示器像素之資料線與像素電極間發生的串擾導致非所欲效應如電壓偏移。與前述電壓偏移類似，即使顯示像素未被定址(例如相關像素TFT空乏)，亦會因資料線與像素電極間電容性耦合導致兩者間的串擾。此串擾會造成非所欲之電壓偏移，因其導致光學假影如影像條紋。
在一些實施例中，電泳顯示器或EPD 100可包含兩基板(例如塑膠或玻璃)，其中前板疊層或FPL位於兩基板間。在一些實施例中，上基板底部可塗布透光導電材料，以作用為導電電極(亦即Vcom 板)。下基板頂部可包含電極單元陣列(例如每一顯示像素用之導電電極)。半導體開關如薄膜電晶體或TFT可與這些像素電極之每一者相關聯。施加偏壓至像素電極與Vcom 板可造成FPL之電光轉換。此電光轉換可做為EPD上文字或圖像資訊顯示的基礎。為了顯示所要影像，需施加適當電壓至每一像素電極。為達成此舉，每一TFT 102可具有一閘極線信號、一資料線信號、Vcom 線信號及一儲存電容器。在一實施例中，如圖1所示，每一TFT 102之閘極可電耦合至一掃描線104，且電晶體之源極或汲極可連接至一資料線106，及儲存電容器之兩端子可分別連接至Vcom 線108及像素電極。在一些實施例中，在上基板底部上之Vcom 及下基板頂部上之Vcom 線柵格可連接至相同DC源。
[EPD操作與串擾]
在操作中，施加驅動信號(例如電壓脈衝)至每一資料線以更新顯示像素。為選擇更新的顯示像素，可選擇性啟動掃描線(例如掃描線104)，使得可將來自資料線(例如資料線106)的驅動信號施加至像素電極而更新對應的顯示像素。在一些實施例中，可依序啟動每一掃描線直到更新完成EPD 100的所有顯示像素。在此更新處理中，Vcom 信號可能因非所欲的電容耦合效應而受擾或偏移所欲位準。
圖2例示依此處所示主題之顯示像素200之頂視圖。顯示像素200包含經構造成驅動顯示像素之一像素電極204。使用時，顯示像素200將會被感應至像素電極204上之一系列電壓脈衝驅動。該系列電壓脈衝可經電晶體208施加至像素電極204。電晶體208可作用為開關，切換導向像素電極204之信號路徑導通與關閉。例如電晶體208之閘極216可連接至信號選擇閘極線202。使用時，此閘極線202可藉由施加電壓至電晶體208之閘極216與否而選擇性開關電晶體208。此外，可經由資料線206供應該等系列電壓脈衝。此資料線206亦電耦合至電晶體208，示如圖2。操作時，可透過閘極線202傳輸信號(例如電脈衝)以啟動或開啟電晶體208，且一旦開啟電晶體208，則透過資料線206施加之電信號可透過電晶體208傳輸至像素電極204。圖2中亦顯示Vcom線210。在一些實施列中，此Vcom線210可電耦合至顯示器之上電極(圖2中未顯示)，以維持上電極於恆定電壓位準(例如Vcom)。此Vcom線210一般處於較像素電極204低之裝置位準。亦連接至此Vcom線210者係儲存電容器之電極214，其中電極214可位於與Vcom線210相同之裝置層上。
現參考圖3A，在電容耦合之來源中，一種可能的來源可係在資料線304與Vcom線306間之電容(亦即CDC 302)。例如當經由資料線304施加電壓信號時，資料線304中的電壓位準變化可造成資料線304與Vcom線306間的電容耦合效應。另一可能的電容耦合源可發生於儲存電容器之電極與像素電極間。
操作時，Vcom 電壓值可於選擇顯示像素(亦即掃描線308選擇像素310)且經由資料線304施加驅動電壓信號時經歷擾動(例如電壓值驟降)。在此情況下，部分受前述電容效應影響，Vcom 電壓值可偏移目標值(例如+15、-15或0V)。若當掃描線308關閉時Vcom 無法回到此目標電壓值(亦即將所選顯示像素置於浮動狀態)，則所選像素電極之電壓位準將概略偏移目標值至較推估值低，導致沿著Vcom 線方向之可見帶狀。可利用電荷守恆原理計算像素電壓(ΔVPIXEL )之偏移
Figure 02_image001
其中ΔVCOM 係在掃描線關閉時之Vcom 電壓偏移值，Ctotal 係像素電極的總電容，且Ctotal 除了前述電容耦合效應外，亦可包含任何金屬層與材料層間引發之電容耦合效應。
此像素電壓偏移(ΔVPIXEL )有時可稱之為串擾或雜散。一種緩解這些非所欲效應的方式可降低Vcom 信號之RC延遲，以確保VCOM 值在掃描線啟動期間回到目標值或位準。圖3B例示隨著開啟像素(亦即開啟像素310)之掃描電壓314升高， Vcom 電壓312歷經驟降。
為降低前述RC延遲以確保快速V位準恢復，圖4B中呈現一種新的顯示器背板設計。但首先參考圖4A，其中呈現習知背板400。如圖4A所示，顯示像素的每一列受VCOM 線402偏壓，藉此施加VCOM 電壓至每一像素。圖4A中顯示每一列之VCOM 信號線彼此獨立。在此構造中，當VCOM 值受儲存電容器及資料線導致之電容耦合效應(亦即CDC )影響或偏移時，可僅藉由在像素陣列兩端施加電壓而恢復VCOM 值，但可能不夠快。
現參考圖4B，在依此處所揭示之主題之設計410中，一VCOM 線412可利用傳導路徑416電耦合至相鄰列之另一VCOM 線414，其中可利用習知用於此技術中之材料建構該傳導路徑416，以建構一導電線(例如銅、金等)。在此構造中，VCOM 電流現可自像素陣列的四側抵達像素，導致RC延遲降低，造成較快速的VCOM 恢復時間。
實際上，一EPD可具有顯示像素之兩相鄰列，其中每一列可包含複數個顯示像素，且每一顯示像素具有用於驅動顯示像素之一像素電極。且每一列亦可具有連接至複數個顯示像素之每一像素電極之第一信號線，及連接顯示像素之第一列之第一信號線至第二列之第二信號線之至少一個傳導路徑。或如圖4B所示，顯示像素之相鄰列間具有超過1個，例如2或3或4個此類傳導路徑。
在另一實施例中，示如上述的圖2，一EPD可具有相間隔之第一與第二裝置層，及顯示像素之第一與第二列，其中每一列可具有複數個顯示像素，且每一顯示像素具有位於第一裝置層上用於驅動顯示像素之像素電極。此外，一信號線位於第二裝置層上且與複數個顯示像素之像素電極的一部份重疊，及至少一個傳導路徑連接顯示像素之第一列之信號線至第二列之信號線。
圖5A例示利用圖4A所示背板顯示之影像，其中具串擾效應。經比較，圖5B例示利用圖4B所示背板顯示之影像，其中串擾效應降低。
自前述可見本發明可提供用以降低串擾及顯示像素電壓偏移之背板。熟悉此技術者將顯見可在不背離本發明之範疇下，對本發明之特定實施例進行多種改變與變化。因此，前述整體係例示性而無限制之意。
100:電泳顯示器 102:薄膜電晶體 104:掃描線 106:資料線 108:Vcom 線 200:顯示像素 202:閘極線 204:像素電極 206:資料線 208:電晶體 210:Vcom 線 214:電極 216:閘極 302:CDC 304:資料線 306:Vcom 線 308:掃描線 310:像素 312:Vcom 電壓 314:掃描電壓 400:背板 402:VCOM 線 410:設計 412:VCOM 線 414:VCOM 線 416:傳導路徑
圖1例示依此處所揭示之主題之背板電路； 圖2例示依此處所揭示之主題之顯示像素頂視圖； 圖3A例示依此處所揭示之主題之顯示像素之等效電路實施例； 圖3B例示依此處所揭示之主題之樣本驅動機制； 圖4A例示依此處所揭示之主題之一背板電路； 圖4B例示依此處所揭示之主題之另一背板電路； 圖5A例示依此處所揭示之主題之具串擾(crosstalk)之顯示影像； 圖5B例示利用此處所揭示之主題之具降低串擾之顯示影像。
無。

Claims (9)

  1. 一種電光顯示器，其具有顯示像素的第一列與第二列，每一列包括：複數個顯示像素，每一顯示像素具有用於驅動該顯示像素之一像素電極；一第一信號線，其連接至該複數個顯示像素之該等像素電極之每一者；一資料線，連接到該複數個顯示像素中的每一者，且構造成向該複數個顯示像素中的每一者供應驅動信號，該資料線與該第一信號線形成第一電容；該複數個顯示像素之該等像素電極之每一者連接到一儲存電容器，該儲存電容器與該複數個顯示像素之該等像素電極之每一者形成第二電容，及至少一個傳導路徑，其連接該第一列之該第一信號線至該顯示像素的第二列之一第二信號線，構造成降低由該第一電容及該第二電容產生的串擾。
  2. 如請求項1之電光顯示器，其中該第一及第二信號線係構造成傳輸一恆定電壓至該複數個顯示像素之該等電極。
  3. 如請求項1之電光顯示器，其進一步包括連接至該第一信號線之一電容器。
  4. 如請求項1之電光顯示器，其進一步包括電光材料之層，該電光材料之層構造成驅動該電光材料以顯示影像。
  5. 如請求項4之電光顯示器，其中該電光材料包括旋轉雙色構件或電致變色材料。
  6. 如請求項5之電光顯示器，其中該電光材料包括電 泳材料，該電泳材料包括設置在流體中且能夠在電場的影響下移動通過該流體的複數個帶電粒子。
  7. 如請求項6之電光顯示器，其中該等帶電粒子及該流體被限制在複數個膠囊或微胞內。
  8. 如請求項7之電光顯示器，其中該等帶電粒子及該流體以被包括聚合材料的連續相圍繞的複數個離散液滴的形式存在。
  9. 如請求項8之電光顯示器，其中該流體是氣態的。
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