TW507185B - Organic electroluminescent display device - Google Patents

Organic electroluminescent display device Download PDF

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Publication number
TW507185B
TW507185B TW088123045A TW88123045A TW507185B TW 507185 B TW507185 B TW 507185B TW 088123045 A TW088123045 A TW 088123045A TW 88123045 A TW88123045 A TW 88123045A TW 507185 B TW507185 B TW 507185B
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display device
eld
oelds
light emitting
light
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TW088123045A
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Mutsumi Kimura
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Seiko Epson Corp
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • H04N1/603—Colour correction or control controlled by characteristics of the picture signal generator or the picture reproducer
    • H04N1/6052—Matching two or more picture signal generators or two or more picture reproducers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • 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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2074—Display of intermediate tones using sub-pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • 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
    • G09G3/22—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
    • G09G3/30—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 electroluminescent panels
    • G09G3/32—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 electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—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 electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • 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
    • G09G3/22—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
    • G09G3/30—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 electroluminescent panels
    • G09G3/32—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 electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—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 electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—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 electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3258—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 electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the voltage across the light-emitting element
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • H04N1/6083—Colour correction or control controlled by factors external to the apparatus
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0443—Pixel structures with several sub-pixels for the same colour in a pixel, not specifically used to display gradations
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0465—Improved aperture ratio, e.g. by size reduction of the pixel circuit, e.g. for improving the pixel density or the maximum displayable luminance or brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/122—Pixel-defining structures or layers, e.g. banks

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Geometry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Electroluminescent Light Sources (AREA)
  • Control Of El Displays (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Description

507185 A7 ____B7_ 五、發明説明（彳） 【發明所屬之技術範圍】 (請先閱讀背面之注意事項再填寫本頁) 本發明係有關顯示裝置，尤其有關於經由薄膜電晶體 (以下以T F T表之）所驅動，具備於液相步驟形成之高 分子系之有機場致發光元件（以下以〇E L D表之）的薄 膜電晶體驅動有機場致發光顯示裝置（以下以T F T -〇E L D表之）。 【以往之技術】 T F T -〇E L D係做爲實現輕重量、薄型、小型、 高精細、廣視角、低消耗電力等的顯示裝置，灰於未來有 其展望。於圖1 ，顯示以往之TFT — OELD，於圖2 顯示該截面圖。在此，雖僅以一個畫素1 1加以表示，但 實際上存在有複數行、複數列之多數畫素11。在此 〇E LD 18係高分子系者，經由旋轉塗佈、刀刃塗佈、 噴墨等之液相步驟加以形成。 經濟部智慧財產局員工消費合作社印製 如圖1所示之構成時，爲實現灰階之時，需要變化激 勵T F T 1 7之閘極電壓，變化電導地，控制 〇E L D 1 8流入之電流。但是，根據此方式之時，尤其 於中間灰階時，激勵T F T 1 7之電晶體特性之參差以 〇E L D 1 8之亮度參差之形式表現之故，而會有使晝面 產生不均勻之問題。 在此，想出如圖3所示，經由變化〇E L D 1 8之發 光面積，實現灰階之方式（日本特願平9 一 2 3 3 1 0 7 號）。於圖4，顯示此方式之驅動方式。於掃瞄線1 2施 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐}— -4 - 507185 A7 _B7 __ 五、發明説明（2 ) 加掃瞄電位3 1、信號線1 3係由信號線（下位位元） (請先閲讀背面之注意事項再填寫本頁) 1 3 1及信號線（上位位元）1 3 2所成，做爲各信號電 位3 2，施加信號電位（下位位元）3 2 1及信號電位（ 上位位元）3 2 2。激勵T F T .1 7係由激勵 TFT171 (下位位元）171及激勵TFT172 ( 上位位元）172所成，OELD18係由OELD(下 位位元）1 8 1及〇E L D (上位位元）1 8 2所成。此 例中，係以2位元4灰階加以考量之故，〇E L D (下位 位元）181及〇ELD(上位位元）182之面積比爲 1:2。 經濟部智慧財產局g(工消费合作社印災 此方式中，激勵T F T 1 7係得近似完全開啓狀態及 近似完全關閉之狀態的2狀態之仕一者。於開啓狀態中， 激勵T F T 1 7之阻抗較〇E L D 1 8之阻抗而言，小到 可以加以忽視，流入激勵T F T 1 7及〇E L D 1 8之電 流量係幾近僅以激勵T F T 1 7之阻抗加以決定。因此， 激勵T F T 1 7之電晶體特性之參差則不會以 〇E L D 1 8之亮度參差加以顯示。又，於關閉狀態中， 施加於〇E L D 1 8之電壓則呈臨限値電壓以下之故， 〇ELD 1 8完全不會發光，因此，激勵TFT 1 7之電 晶體特性之參差則不會以〇E L D 1 8之亮度參差加以顯 示。 【發明欲解決之課題】 圖5係經由變化圖3及圖4所示OELD1 8之發光 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -5- 507185 A7 ___B7 五、發明説明（3 ) (請先閲讀背面之注意事項再填寫本頁) 面積，實現灰階顯煽之TFT — 〇ELD的截面圖。圖5 (a )係〇E L D (下位位元）1 8 1之截面圖。圖5 ( b)係OELD (上位位元）182之截面圖。OELD (下位位元）1 8 1之及發光部2 5和〇E L D (上位位 元）1 8 2之發光部2 5之比係以1 ·· 2爲佳。 發光層係高分子系之Ο E L D，於液相步驟加以形成 。儲存體2 4之表面係呈撥液性，發光層2 2不會殘留之 故，Ο E L D 1 8係被圖案化，決定該面積。對於儲存體 2 4之側面，是床爲撥液性還是親液性則與材料步驟有關 〇 經濟部智慧財產局8工消費合作社印^ 圖5係儲存體2 4之側面假定爲親液性者。就液相步 驟特有之現象而言，發光層2 2則呈向儲存體2 4之側面 依附之截面形狀。此時，發光層2 2之較薄部分有電流流 過，此部分則呈發光部2 5。在此所述發光層2 2之截面 形狀係對於液體之量、液體之物性、液體之初期位置、基 板之狀態、溫度、環境等敏感之故，難以加以控制。即， 難以獲得所期望發光面積之絕對値。爲此，難以〇E L D (下位位元）1 8 1之發光部2 5 ，和〇E L D (上位位 元）182之發光部25之比，正確呈1 : 2之故，結果 難以得正確之灰階。 圖6係與圖5同樣，OELD (下位位元）181之 截面圖（圖6 (a))及OELD (上位位元）182之 截面圖（圖5 (b))。圖6之中，儲存體24之側面假 定爲撥液性者。就液相步驟特有之現象而言，發光層2 2 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -6- 507185 A7 B7 五、發明説明（4) 則呈自儲存體2 4之側面遠離之截面形狀。此時，發光層 2 2之較薄部分有電流流過，此部分則呈發光部2 5。在 此，與圖5之時相同，難以使〇E L D (下位位元） 181之發光部25，和OELD (上位位元）182之 發光部25之比，正確呈1:2之故，難以得正確之灰階 〇 在此，本發明之目的係可得正確之發光部2 5，可得 正確之灰階者。 【解決課題之手段】 (1 )申請專利範圍第1項記載之本發明係在於各晝 素，形成複數之TFT及複數之OELD，TFT及 〇E L D係直列地連接，切換T F T之開啓·關閉狀態， 經由控制〇E L D發光之面積，實現灰階的顯示裝置中， 其特徵係複數之〇E L D係各爲相同之形狀，經由控制前 〇E LD發光之個數，實現灰階者。 根據本構成，〇E L D就液相步驟特有之現象，不論 向儲存體之側面貼近之截面形狀或自儲存體遠離之截面形 狀的情形，可令各〇E L D之發光部呈同一面積，可得正 確之灰階。 此係本構成中，雖仍難以得期望之發光面積之絕對値 ，複數之〇E L D之發光面積係相互呈相等之故，經由控 制此等之個數，可使發光面積比成爲正確。 (2 )申請專利範圍第2項記載之本發明係如申請專 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） •裝-- (請先閱讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局5貝工消費合作社印製 507185 A7 ____B7_ 五、發明説明（5 ) 利範圍第1項記載之顯示裝置中，其特徵在於複數之 〇E L D係呈圓形者。 (請先閲讀背面之注意事項再填寫本頁) 根據本構成時，可更正確地令各〇E L D之發光部呈 同一之面積，可得正確之灰階。其理甶係如下所述。 〇E L D具有矩形等之頂點之形狀時，有可能產生該頂點 部之貼近或頂點不滿足等之現象。此現象係與上述截面形 狀之問題之理由相同，妨礙了獲得正確之灰階。此現象係 較上述截面形狀之問題，更於液體之量、液體之物性、液 體之初期位置、基板之狀態、溫度、環境等敏感之故，於 鄰接之〇E L D間亦難以加以控制。而經由將〇E L D呈 圓形，即可避免此現象。 (3 )申請專利範圍第2項記載之本發明係如申請專 利範圍第1項記載之顯示裝置中，其特徵爲複數之 〇E L D係於橫方向或縱方向，呈等間隔配置者。 經濟部智慈財產局員工消費合作社印製 根據本構成時，可更正確地令各〇E L D之發光部呈 同一之面積，可得正確之灰階。其理由係如下所述。以旋 轉塗佈·刀刃塗抹形成OELD時，一旦塗佈於晝素整體 之發光層由於儲存體表面之撥液性，自然地流入儲存.體之 凹部。而噴墨之時，亦有時有如此。此時，儲存體凹部之 周圍之凸部面積爲廣之時，塗佈於此部分之發光層所有將 流入儲存體凹部之故，發光層會變厚。結果，產生發光層 之膜厚之參差。令複數之〇E L D向橫方向或縱方向等間 隔地配置，即可避免此參差。 又，根據本構成之時，經由噴墨步驟形成〇E L D時 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -8- 507185 A7 B7 五、發明説明（6 ) ，以等間隔吐出墨液即可之故，可使製造簡化。 (請先閲讀背面之注意事項再填寫本頁) 【發明之實施形態】 以下，將本發明之較佳實施形態，根據圖面加以說明。 (實施例1 ) 圖7係顯示有關本發明之實施例1之T F T -〇E L D之畫素圖。在此雖僅顯示一個畫素11之圖記， 但實際上存在複數行、複數列之多數晝素11。 經濟部智慧財產局S工消費合作社印奴 OELD (下位位元）18 1係由OELD (下位位 元、矩形）1 8 1 1所成，〇E L D (上位位元）1 8 2 係由〇E L D (上位位元、第1矩形）1 8 2 1 1和 〇E L D (上位位元、第2矩形）1 8 2 2 1所成。如申 請專利範圍第1項所示，〇E L D (下位位元、矩形） 1811、〇ELD (上位位元、第1矩形）18211 、〇ELD (上位位元、第2矩形）18221係呈同樣 之形狀之故，可得同樣之發光面積，變化發光之 〇E LD 1 8之個數，可得正確之灰階。 (實施例2 ) 圖8係顯示有關本發明之實施例2之T F T — OELD之畫素圖。在此雖僅顯示一個畫素11之圖記， 但實際上存在複數行、複數列之多數畫素11。 〇E L D (下位位元）1 8 1係由〇E L D (下位位 本紙張尺度適用中國國家標準（CNS ) A4規格（21〇Χ297公釐） 507185 A7 B7 五、發明説明（7) (請先閲讀背面之注意事項再填寫本頁) 元、圓形）1 8 1 2所成，〇E L D (上位位元）1 8 2 係由〇E L D (上位位元、第1圓形）1 8 2 1 2和 〇ELD (上位位元、第2圓形）18222所成。如申 請專利範圍第2項所示，〇E L D (下位位元、圓形） 1812、〇ELD (上位位元、第1圓形）182l2 、〇ELD (上位位元、第2圓形）18222係呈同樣 之形狀之故，可得同樣之發光面積，變化發光之 〇E L D1 8之個數，可得正確之灰階。 (實施例3 ) 圖9係顯示有關本發明之實施例3之T F T — 〇ELD之畫素圖。在此雖僅顯示一個畫素11之圖記， 但實際上存在複數行、複數列之多數晝素1 1。 經濟部智慧財產局S工消费合作社印製 〇E L D (下位位元）1 8 1係由〇E L D (下位{立 元、圓形）1 8 1 2所成，〇E L D (上位位元）1 8 2 係由〇E L D (上位位元、第1圓形）1 8 2 1 2和 〇E L D (上位位元、第2圓形）1 8 2 2 2所成。如串 請專利範圍第3項所示，〇E L D (下位位元、圓形） 1812、〇ELD (上位位元、第1圓形）18212 、〇ELD (上位位元、第2圓形）18222係不單是 該畫素1 1之內部，對於鄰接之畫素1 1 ，於橫方向及縱 方向，配置呈等間隔。爲此，更可正常地令各〇E LD之 發光部得呈同一面積，可得正確之灰階。 然而，做爲形成於各畫素之E L元件，於實施例1中 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -10- 507185 A7 B7 五、發明説明（8) (請先閲讀背面之注意事項再填寫本頁) ’將矩形狀之元件做爲例子加以顯示，於實施例2、3中 ’雖顯示圓形狀之元件，本發明非限定於此等，以多角形 狀或橢圓形之元件時，亦可正確得灰階。尤其，橢圓形之 元件係與圓彫狀之情形相同，無矩形之頂點部之故，無頂 點部由於發光層不滿足之問題。 【發明之效果】 如以上所述，根據本發明經由控制場效發光元件之發 光之發光面積，可實現正確之灰階。 【圖面之簡單說明】 【圖1】 顯示以往之變化T F T導電，實現灰階顯示之T F T —OELD之畫素圖。 【圖2】 TFT — OELD之截面圖 【圖3】 經濟部智慧財產局員工消費合作社印製 顯示以往之變化〇E L D之發光面積，實現灰階.顯示 之TFT — OELD之畫素圖。 【圖4】 顯示以往之變化〇E L D之發光面積，實現灰階顯示 之TFT —〇E LD之驅動方法圖。 【圖5】 以往之變化〇E L D之發光面積，實現灰階顯示之 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -11 - 507185 A7 B7 五、發明説明（9 ) TFT — OELD之OELD之截面圖（儲存體側面爲親 液性時）。（a )係〇E L D (下位位元）之圖、（b ) 係〇E L D (上位位元）之圖 【圖6】 以往之變化Ο E L D之發光面積，實現灰階顯示之 TFT — OELD之OELD之截面圖（儲存體側面爲撥 液性時）。（a )係〇E L D (下位位元）之圖、（b ) 係〇E L D (上位位元）之圖。 【圖7】 顯示有關本發明之實施例1之T F T -〇E LD晝素 圖。 【圖8】 顯示有關本發明之實施例2之T F T —〇E L D晝素 圖。 【圖9】 顯示有關本發明之實施例3之TFT-OELD晝素 圖。 【符號說明】 11 畫素 12 掃猫線 13 信號線 13 1 信號線（下位位元） 13 2 信號線（上位位元） 14 電流供給線 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） (請先閲讀背面之注意事項再填寫本頁) 訂 線 經濟部智慧財產局g(工消費合作社印製 -12- 507185 A7 B7 經濟部智慧財產局員工消費合作社印奴 (請先閲讀背面之注意事項再填寫本頁)
五、發明説明（1〇) 2 16 2 17 17 1 17 2 18 18 1 18 2 18 1 18 1 18 2
保持容量 保持容量 保持容量 取樣T F 取樣T F 取樣T F 激勵T F 激勵T F 激勵T F 〇E L D 〇E L D 〇E L D 〇E L D 〇E L D 〇E L D 18 2 11 Ο E L D 1 8 2 2 1 Ο E L D 18 2 12 Ο E L D 1 8 2 2 2 Ο E L D 2 1 陽極 2 2 發光層 2 3 陰極 2 4 儲存體 2 5 發光部 (下位位元） (上位位元） T T (下位位元） T (上位位元） T T (下位位元） T (上位位元） (下位位元） (上位位元） (下位位元、矩形） (上位位元、圓形） (上位位元） (上位位元、第1矩形） (上位位元、第2矩形） (上位位元、第1圓形） (上位位元、第2圓形） 本紙張尺度適用中國國家標準（CNS ) A4規格（210 X 297公釐） -13- 507185 A7 B7 五、發明説明（ 11) 3 1 掃瞄電位 3 2 1 信號電位 (下位位元） 3 2 2 信號電位 (上位位元） 經濟部智慧財產局g(工消费合作社印焚 (請先閱讀背面之注意事項再填寫本頁)
本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -14 -

Claims (1)

  1. 507185
    A8 B8 C8 D8 六、申請專利範圍 1、 一種顯示裝置，屬於在於各畫素，形成複數之薄 膜電晶體及複數之有機場致發光元件，薄膜電晶體及前述 有機場致發光元件係直列地連接，切換薄膜電晶體之開啓 ♦關閉狀態，經由控制有機場致發光元件發光之面積，實 現灰階的顯示裝置中，其特徵係複數之有機場致發光元件 係各爲相同之形狀，經由控制有機場致發光元件發光之個 數，實現灰階者。 2、 如申請專利範圍第1項記載之顯示裝置，其中， 複數之有機場致發光元件係呈圓形者。 - 3、 如申請專利範圍第1項記載之顯示裝置，其中， 複數之有機場致發光元件係於橫方向或縱方向，呈等間隔 配置者。 4、 一種顯示裝置，其特徵係於各晝素，形成電晶體 及有機場效發光元件，薄膜電晶體及有機場效發光元件之 平面形狀係不具有頂點及構造者。 (請先閲讀背面之注意事項再填寫本頁) 經濟部智慧財產局工消費合作社印製 15 本紙張尺度適用中國國家梂準（CNS ) A4規格（210X297公釐）
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