TWI233080B

TWI233080B - Driving method for dot matrices of organic light emitting diodes, and the device thereof

Info

Publication number: TWI233080B
Application number: TW091123977A
Authority: TW
Inventors: Jeng-Tze Shiu; Jiun-Lin Shiu; Yi-Wen Wu
Original assignee: Weltrend Semiconductor Inc
Priority date: 2002-10-17
Filing date: 2002-10-17
Publication date: 2005-05-21
Also published as: KR20040031670A

Abstract

The present invention provides a driving method for dot matrices of organic light emitting matrices, wherein the dot matrices have a plurality of organic light emitting diode pixels arranged in a matrix. The driving method includes the following steps: (A) using a digital column driving signal to control a plurality of column current sources for driving each column pixel of the dot matrix, respectively; (B) using a horizontal scanning signal to drive each row pixel of the dot matrix, so when the horizontal scanning signal reaches the scan period of any one row pixel, it will control each column current source for concurrently supplying to the row pixel, so as to flow the current through the pixels to be lightened; and, (C) providing an adjustable feedback control, so as to adjust according to the characteristic differences between dot matrices, and provide a large current at the instant of current flowing through each pixel to be lightened for rapid charging the effective capacitance of the pixel to approximately the saturation voltage of the relative configuration current.

Description

1233080 A7 B7 五、發明說明【發明領域】本發明是有關於一種點矩陣之驅動方法及其裝置，特別疋指一種有機發光二極體點矩陣之驅動方法及其裝置。【習知技藝說明】有機發光二極體（Organic Light Emitting Diode， OLED)顯示器有無視角、低成本、高應答速度與全彩化等特性，極具發展潛力，一般有機發光二極體面板（簡稱〇LEd 面板）的基本結構，大致是在一由玻璃或透明塑膠所製成之基板上，設置多數矩陣型態排列之有機發光二極體，對整體面板而言，每一發光二極體為一自發光元件，皆為一可被控制明滅之晝素（pixel)。如第一、二圖所示，是習知有機發光二極體面板之簡略電路方塊圖，包含：一由多數0LED晝素丨丨丨所組成之點矩陣（pixel matrix) 11、一用來驅動該點矩陣丨丨中各列書素111之列驅動總成1 2、一用來驅動該點矩陣} i中各行查素Π 1之行驅動總成1 3、一控制該列驅動總成丨2與行驅動總成1 3動作時序之顯示控制單元14，及一供應列、行驅動總成1 2、1 3所需電壓之升壓單元1 5。 έ亥點矩陣11之結構是以共陰極（c〇mmon cathode)方气來建構，圖中所示的矩陣結構為128行x64列。當要點A矩陣11中的某一 0LED晝素111 ,必須驅動所對應之行與列該顯示控制單元14可透過數位信號線的連接，控制前述列、行驅動總成12、13與升壓單元15，以達顯示時序上本紙張尺度適用巾@ @家標準（CNS) A4規格（21Gx297公餐) ' 第3頁 1233080 五、發明說明（2 ) 的控制。該行驅動總成13可將從顯示控制單位電壓士缺鉍4么法& 1 4送過來的數電“唬轉換為數位形式的電流動該點矩陣"的每一行〇LED畫素⑴。^。遽’用來驅該列驅動總成1 2為一水平掃描 ,e . ^ Λ Γ田之•辱5動掃描（Scan)電路有夕數結構相同而且獨立的列 ^ 191 θ a η動寬路Ul，列驅動電接地开^ 作用’受驅動導通時可將畫素⑴之陰極二成電抓迴路’該等列驅動電路121受顯示控制單元 —控制所進行之掃描驅動動作，是使點矩陣u中只有其中 :列畫素⑴受驅動，其他不被驅動的各列畫素⑴則會獲件-適當的逆向偏壓（Rev⑽VG1 tage)，當切掃描信號達到其中任何一列驅動電路121而驅動對應列之畫素in時 ’顯示控制單a 14是同時控制行驅動總成13，使其同步送出相對於該列畫素ln的行電流源信號至點矩陣n，使需要發光之畫素111有電流流過，而不發光的畫素ιη不會有電*IL "IL過/瓜過畫素1 1 1的電流最後會透過列驅動總成J 2 接地而形成一個電流迴路，讓相對於該列上的畫素丨i丨亮起來。由第二圖可見，該點矩陣1 1是以共陰極方式來建構，其中行驅動總成1 3是由多數獨立之行驅動電路丨3 〇組成，每一行驅動電路130的等效電路具有串接之一行電流源131 與一電流源開關132(current source sw·)，當欲點亮點矩陣 11中任何一個晝素111，所對應行驅動電路丨3 〇之電流源開關1 32便會接通（ON)，讓其行電流源丨3 i的電流入晝素本紙張尺度適用中國國家標準（CNS) A4規格（210x297公爱）第4頁 1233080 A7 B7 五、發明說明（3 ) 1 1 1之％極’此時若列驅動總成1 2中的某一列驅動電路 1 2 1也同時導通，將晝素11丨的陰極接地而形成電流迴路，就會讓該導通之行電流源1 3 1所流經的晝素111亮起來，而整個畫面的整體對比（contrast)亮度可由行驅動總成13之該等行電流源1 3 1的大小來進行調整。该升壓單元15的設置作用，是由於一般〇led的數位電路通常提供5V以下的直流（DC)電壓，此電壓與0LED動態掃描顯示時驅動所需要的數十伏電壓有很大的差距，無法直接當作驅動0LED的電壓源，所以需要藉由該升壓單元15利用切換（Switching)方式將電壓升到動態掃描所需的正常工作電壓。以下續針對有關前述習知有機發光二極體點矩陣n利用歹j (Row)與行（Column)掃描驅動時序的控制，來獲得晝面顯示的控制過程如下·· 作說明個晝素、水平，其驅，欲點電流源動電路號，使的一整預定之以該點矩陣11結構為128C〇lumil x64R〇w為例，行驅動總成1 3之各行驅動電路丨3 〇負責提供每所需的電流源，而列驅動總成12負責產生動態掃描（Scan)信號，使點矩陣u形成一個動態的晝面動時序如第二圖所示，當行驅動總成丨3送出資料後 π之畫素111所對應的行驅動電路13〇就會接通其開關1 32 ’同-個時間内該列驅動總成12之64列驅 j21(R〇W〇〜ROW63)中，只冑一列會接通掃描控制信孩^OW上欲發亮的晝素流過電流源，此時被掃描到列晝素U 1就會顯示出相對的圖案（Pattern)，經過一頁第五、發明說明（4 ) 作時間後〜I，並接著掃描轉下-個ROW，而行驅動電上的電机源貧料也會變化成相對於下一個Row的資 …依此模式從第1 RgwG掃描到最後_列rgw63，再回〇w0重複不斷循環，每一 r㈣在掃描過程所佔的工作稱為知描期間（Scan Duty)，所以當點矩陣11有 R〇W時’便需要有64個Scan Duty時間，該Scan Duty ^ ^ 從第一個Row()掃描到最後一個R0w63 而的時間稱為1個掃描畫面(Scan F_e)期間，由於人類彳:視覺：留的現象，因此當畫面出現頻率高達-預定頻；精由人類的視覺暫留，就可看到整個畫面的顯示。崎二極體面板中驅動點矩陣u之相關設計子發光損失較大」、「殘影現象」及「採用較不彈性之類比電路來控制對比亮度（晝面對 ::佳等:r黑色之亮度的比值，其比值愈大代表= 〜佳）」專缺點，針對該等缺點逐一說明如下： <發光損失較大> 雖”…亥點矩陣i i藉由行驅動總成i 3與列驅動1 2 工制’而可獲得所欲顯示的畫面，但由於每、、; :負=:=驅動之發光效率問題，會影V到畫面品致如第：圖：示Γ於::單一晝素111的等效電路圖大光本r 112由τ具有類似發光二極體特性所構成的發所導電玻璃和金料線及有機薄膜之電阻形成的一等效電阻R1與一等效電容C1，及—、接面結構所形成的等效電容C2。前述等效電阻心： 1233080 A7 ___B7_ 五、發明說明（5 ) 值非常大，不會有太多的洩漏電流流過。由於上述Rl、Cl、C2的存在，加上〇LED的驅動必須提供一大於OLED導通電壓（cut-in voltage)之電壓，雖然隨著電壓大小的改變可使0LED的亮度跟著改變，但由於 OLED發光亮度的控制對電壓的敏感度，會隨著〇LED面板的製程、材料、顏色及結構設計上的特性差異，而會有完全不同的導通電壓及發光亮度曲線，導致亮度上的變數太多而難以控制，因此一般是利用前述第二、四圖所示使用的行驅動電路1 3 0作電流源驅動控制，才能比較容易掌控每一畫素111的發光特性與亮度。當前述行驅動電路1 3 0經由以固定時間切換其電流源開關1 3 2，來控制每一個畫素111的亮度時，當開關丨3 2接通後，因為前述等效電阻與電容負載的影響，有一部分的電流會流過晝素11的發光本體112，而有一部分的電流電荷就會流向等效電容C1與C2進行充電，造成行驅動電路 130輸出至畫素ill之陽極的驅動電壓VD與電流源開關 1 32的響應速度有很大的時間差，造成驅動電壓vd波形上升時間（Rise Time)響應速度變慢，部份的驅動發亮時間會損失掉，而且此一發光效率損失情形，更會隨著電流源開關132切換（Switching)頻率的升高而變大，因此以⑽Duty 越短發光效率就會越差，影響點矩陣丨丨顯示的畫質，其時序波形圖如圖五所示，電流源開關132在〇1^後，由於vd 上升波形達到飽和（Saturation)狀態的時間與電流源開關i32 的ON時間不同步，因此在第五圖中實際發光曲線vd與理本紙張尺度適用中國國家標準(CNS) A4規格（210x297公董）_ 1233080 A7 五、發明說明（6 想發光曲線VD，間之斜光能量損失的部分。 ’就是-個固定掃週期内發流源將行電流源131的電流調高，讓畫“1在電作行期間’達到預期設定的發光能量與亮度，會跟著提高n⑴=1，提供、給0LED的電壓源就〇咖發光有機薄膜對於電壓的有電壓降也就跟著變大’由於 M 4 '電壓有—定的耐壓程度，因此會縮短材枓哥命，較不可行。因此在電路設古+ μ ，γ θ fTVM - ?s ^ D °見以固定的電流大小⑴與時間订預充（Pre-CWge)之方式，在前述行電流源131對畫 f 1U驅動瞬間起的-小段時間内，提供輔助電流對畫； "的寄生等效R、C負載作預充的動作，使前述Μ的電壓波形較快速上升。由於晝素111中的寄生等效R、c負載會隨著0LED的大】、材料、顏色、機構及製程的不同特性而有極大的變化’因此上述Pre.Charge以固定電流大小與時間進行預充之方式’只能針對單_固定㈣LED面板作設計，當其應用在不同OLED面板時，便會發生上升時間太慢或過快之清^例如’當在一標準負載下藉由Pre-Charge #法，在固疋電::與時間條件下，提# 〇LED t素輔助電流，使畫素可獲侍一如第六圖所示之較佳驅動電壓vd波形。但若通尺寸麦大，其寄生之等效R、C負載也會變得比原來標準負載還大，此時利用相同的p仏Charge電路以前述固疋電μ與時間進行預充，其所獲得之驅動電壓V1波形的上1233080 A7 B7 V. Description of the Invention [Field of the Invention] The present invention relates to a method and a device for driving a dot matrix, and particularly to a method and a device for driving an organic light emitting diode dot matrix. [Description of Know-how] Organic Light Emitting Diode (OLED) displays have the characteristics of viewing angle, low cost, high response speed and full color, which have great development potential. Generally organic light emitting diode panels (referred to as 〇LEd panel) The basic structure is roughly an organic light-emitting diode arranged in a matrix pattern on a substrate made of glass or transparent plastic. For the overall panel, each light-emitting diode is A self-luminous element is a pixel that can be controlled to extinguish. As shown in the first and second figures, it is a simplified circuit block diagram of a conventional organic light emitting diode panel, including: a pixel matrix composed of a majority of 0LED daylight 丨丨丨 11, one for driving The column driving assembly 1 of each column of the element 111 in the dot matrix 丨丨 one is used to drive the dot matrix} The row driving assembly 1 of each row of the prime element Π 1 3. One controls the column driving assembly 丨2 Display control unit 14 with row drive assembly 1 3 operation timing, and a booster unit 15 that supplies column, row drive assembly 1 2 and 1 3 with the required voltage. The structure of the dot matrix 11 is constructed with a common cathode gas. The matrix structure shown in the figure is 128 rows by 64 columns. When a certain 0LED day element 111 in the matrix A of point A must drive the corresponding row and column, the display control unit 14 can control the aforementioned column and row drive assemblies 12, 13 and the boost unit through the connection of digital signal lines. 15. In order to show the timing of this paper, the paper size is applicable to the towel @ @ 家标准 (CNS) A4 specification (21Gx297). Page 3 1233080 V. Control of invention description (2). The drive assembly 13 in this row can convert the digital power sent from the display control unit voltage and the bismuth 4 & 14 to a digital form of current to move each row of the dot matrix " LED pixels. ^. 遽 'is used to drive the column drive assembly 12 for a horizontal scan, e. ^ Λ Γ 田田 • • 5 scanning circuit (Scan) circuit has the same number structure and independent columns ^ 191 θ a η Moving the wide road Ul, the column driving is electrically grounded. The function 'the cathode of the pixel can be turned into an electric grasping loop when the driver is turned on.' The column driving circuit 121 is controlled by the display control unit—the scanning driving action performed by the Make only one of the dot matrix u: the column pixels ⑴ are driven, and the other columns that are not driven will get pieces-appropriate reverse bias (Rev VG1 tage), when the tangential scanning signal reaches any of the column driving circuits 121, when driving the pixel in of the corresponding column, the 'display control sheet a 14' simultaneously controls the row driving assembly 13 so that it synchronously sends the row current source signal relative to the pixel ln of the column to the dot matrix n, so that it needs to emit light. Pixel 111 has a current flowing, but pixels that do not emit light will not With electricity * IL " IL over / melt over pixel 1 1 1 The current will eventually be grounded through the column drive assembly J 2 to form a current loop, so that the pixels on the column 丨 i 丨 light up. It can be seen from the second figure that the dot matrix 11 is constructed in a common cathode manner, wherein the row driving assembly 13 is composed of a plurality of independent row driving circuits 丨 3 〇, and the equivalent circuit of each row driving circuit 130 has a series connection One of the row current sources 131 and a current source switch 132 (current source sw ·). When any one of the day elements 111 in the dot matrix 11 is to be lit, the current source switch 1 32 of the corresponding row driving circuit 3 will be turned on ( ON), let its current source 丨 3 i current into the day paper This paper size applies Chinese National Standard (CNS) A4 specification (210x297 public love) Page 4 1233080 A7 B7 V. Description of the invention (3) 1 1 1 of % Pole 'At this time, if one of the column driving circuits 1 2 1 of the column driving assembly 12 is also turned on at the same time, the cathode of the day element 11 丨 is grounded to form a current loop, and the conducting current source 1 3 1 The flowing day element 111 lights up, and the overall contrast brightness of the entire picture It can be adjusted by the size of the row current sources 1 3 1 of the row drive assembly 13. The setting function of the boosting unit 15 is because a general digital circuit generally provides a direct current (DC) voltage of 5 V or less. There is a large gap between the voltage and the tens of volts required for driving the 0LED dynamic scanning display. It cannot be directly used as a voltage source for driving the 0LED. Therefore, the voltage boosting unit 15 needs to be used to increase the voltage to Normal operating voltage required for dynamic scanning. The following continues to control the conventional organic light-emitting diode dot matrix n using 歹 j (Row) and column (Column) scan drive timing control to obtain the day-to-day display control process as follows: The driver, if you want to point the current source to move the circuit number, make a complete set of the point matrix 11 structure is 128C〇lumil x64R〇w as an example, the row drive assembly 13 each row drive circuit 3 3 is responsible for providing each The required current source, and the column drive assembly 12 is responsible for generating a dynamic scan (Scan) signal, so that the dot matrix u forms a dynamic diurnal motion sequence as shown in the second figure. After the row drive assembly 丨 3 sends data The row driving circuit 13 corresponding to the pixel 111 of π will turn on its switch 1 32 'In the same time, the column driving assembly 12 of the 64 column driving j21 (R0W0 ~ ROW63), only One column will turn on the current source which is to be illuminated on the scanning control letter ^ OW. At this time, when scanning to the column U1, a relative pattern will be displayed. After a page, the fifth, invention Explanation (4) After the operation time ~ I, and then scan down to a ROW, and the row is driven The power source of the electric motor will also change to the data relative to the next Row ... According to this mode, it scans from the first RgwG to the last column rgw63, and then returns to 0w0 to repeat the continuous cycle. The work is called Scan Duty, so when the dot matrix 11 has RoW, 64 Scan Duty times are needed. The Scan Duty is scanned from the first Row () to the last R0w63. The period of time is called one scan frame (Scan F_e). Due to the phenomenon of humans: vision: retention, when the frequency of the screen appears as high as-predetermined frequency; the entire screen display can be seen by the human vision . The related design elements of the driving point matrix u in the Saki diode panel have large luminous loss "," afterimage phenomenon "and" use of less flexible analog circuits to control the contrast brightness (face of day :: 佳等: r 黑的The ratio of brightness, the larger the ratio represents = ~ good) "special shortcomings, the following is a description of each of these shortcomings: < Large loss of light > Although" ... Hai point matrix ii by row drive assembly i 3 and columns You can get the picture you want to display by driving the 1 2 system. However, because of the luminous efficiency of each, :: === drive, it will affect V to the screen. Equivalent circuit diagram of day element 111. Daguangben r 112 is composed of an equivalent resistance R1 and an equivalent capacitance C1 formed by the resistance of conductive glass and gold wire and organic thin film composed of τ with similar light-emitting diode characteristics. And the equivalent capacitance C2 formed by the junction structure. The aforementioned equivalent resistance core: 1233080 A7 ___B7_ 5. Description of the invention (5) The value is very large, and there will not be too much leakage current flowing. Because of the above Rl, The presence of Cl, C2, plus the LED driver must provide a greater than OLED The voltage of the cut-in voltage can change the brightness of the 0LED with the change of the voltage. However, due to the sensitivity of the OLED light-emitting brightness control to the voltage, it will vary with the process, materials, and characteristics of the LED panel. The characteristics of color and structural design are different, and there will be completely different on-voltages and luminous brightness curves. As a result, there are too many variables in brightness and it is difficult to control. Therefore, the line driving circuits shown in the second and fourth figures are generally used. 1 3 0 can be controlled by current source to control the light-emitting characteristics and brightness of each pixel 111. When the aforementioned line driving circuit 1 3 0 switches its current source switch 1 3 2 at a fixed time to control each picture When the brightness of the element 111 is turned on, after the switch 3 2 is turned on, because of the aforementioned equivalent resistance and capacitive load, a part of the current will flow through the light emitting body 112 of the day 11 and a part of the current charge will flow to When the equivalent capacitors C1 and C2 are charged, causing the driving voltage VD output from the row driving circuit 130 to the anode of the pixel ill and the response speed of the current source switch 1 32 to be large Poor, resulting in a slower response time of the drive voltage vd waveform Rise Time, part of the drive lighting time will be lost, and this loss of luminous efficiency will be switched with the switching frequency of the current source switch 132 As the value of 而 Duty becomes shorter, the luminous efficiency will be worse, which will affect the image quality displayed by the dot matrix. The timing waveform diagram is shown in Figure 5. After the current source switch 132 is 〇1 ^, The time when the vd rising waveform reaches the saturation state is not synchronized with the ON time of the current source switch i32, so the actual light emission curve vd in the fifth figure is in accordance with the Chinese national standard (CNS) A4 specification (210x297). ) 1233080 A7 V. Description of the invention (6 I want to emit light curve VD, part of the oblique light energy loss. 'That is, the current source will increase the current of the line current source 131 during a fixed scan period, so that the painting "1 during the electric operation" reaches the expected setting of the luminous energy and brightness, and n 提高 = 1 will be increased. The voltage source of 0LED is 0. The voltage drop of the light-emitting organic thin film will increase accordingly. Because M 4 has a certain voltage withstand voltage, it will shorten the life of the material, which is less feasible. Suppose that + +, γ θ fTVM-? S ^ D ° See the way of pre-charging (Pre-CWge) with a fixed current magnitude and time, in the aforementioned line current source 131 pair drawing f 1U driving moment-a short period Within the time, the auxiliary current is provided to draw the parasitic equivalent R and C loads to make the pre-charge action, so that the voltage waveform of the aforementioned M rises quickly. Because the parasitic equivalent R and c loads in the day element 111 will follow There are great changes in different characteristics of materials, colors, mechanisms, and processes 'so the above Pre.Charge is precharged with a fixed current size and time' can only be designed for single _ fixed ㈣ LED panels, When it is applied to different OLED panels It will happen that the rise time is too slow or too fast ^ For example, when using a Pre-Charge # method under a standard load, under the condition of solid electricity :: and time, increase # 〇 LED t 素 auxiliary current, so that The pixel can get the better driving voltage vd waveform as shown in Figure 6. However, if the pass size is large, the equivalent R and C load of the parasitic will also become larger than the original standard load. The same p 仏 Charge circuit is precharged with the aforementioned fixed voltage μ and time, and the obtained driving voltage V1 waveform is

1233080 A7 —__ B7 ___ 五、發明說明（7 ) 升速度便明顯變慢（under-shoot)。相反地，若〇LED尺寸變小，使其寄生之等效R、C負載變得比原來標準負載小，此時同樣由相同的Pre-Charge電路以前述固定電流與時間進行預充，此時其驅動電壓V2波形的上升速度非常快，但由於Pre-Charge的電流相對於縮小之〇LED面板而言會變的太大，造成其電壓波形V2有過大（Over-shoot)的情況發生，會造成OLED的損壞及壽命縮短。 <殘影現象〉當接通電流源開關1 32，讓行電流源1 3 1傳送電流到晝素111直到驅動電流的電壓波形上升到相對設定電流的飽和電壓（Saturation voltage)後，如果行電流源131設定的大小保持不變，該電壓就會一直固定在相對的飽和電壓上 ’該飽和電壓點稱為"OLED特性定電流操作電壓點”，不一樣的電流源大小會有不同的"OLED特性定電流操作電壓點" ’而不一樣的OLED面板材料雖然設定相同大小的行電流源，其”OLED特性定電流操作電壓點”也會有所不同，亦即此電壓的大小會隨著OLED面板的製程、材料、顏色及結構設計上的不同特性，會有完全不同的電壓。操作上，當每一行驅動電路130之驅動電流的電壓，在達到”〇LED特性定電流操作電壓點”後斷開電流源開關132，其作用於晝素111之驅動電壓波形，會如前述第五圖中所示以指數 (exponential)的速度下降，這是因為在畫素in中的等效電容C1與C2儲存了大量的電荷，這些電荷會在電流源開關 132 OFF後，開始對畫素111中的發光本體112釋放電流，本紙張尺度適用中國國家標準（CNS) A4規格（210x297公釐）第9頁 1233080 A7 B7 五、發明說明（8 ) 由於此一因素’雖然行驅動電路丨3〇的電流源開關丨32已經off，晝素ill中的發光本體112仍會繼續發光一段時間直到等效電容C1與C2儲存的電荷釋放完為止，造成電流源開關132之OFF動作無法同步控制畫素U1的滅暗。當點矩陣11中每一畫素u丨受行驅動總成1 3的驅動波形，在每一個Row的Scan Duty中，在不該亮的期間呈現微亮的情況，將會讓整個晝面模糊不清，此一狀況即為一般俗稱之殘影現象。 <以類比電路控制亮度> 0LED為自發光元件，其發光亮度（能量卜驅動電流（Ι)χ 導通時間（T)(Duty On Time)，因此關於顯示亮度上的控制，可透過對行驅動總成13之該等行電流源131與列驅動總成 12在掃描期間中導通（〇N)時間的控制，決定單色 (Monochrome)顯示時的點矩陣對比亮度、灰階（(}ray)顯示時的點矩陣灰階程度與亮度，及彩色（c〇l〇r)顯示時點矩陣色彩的調配明暗。由於以往相關的產品大部分都是透過類比電路對驅動電流作控制來影響點矩陣的明暗度，或是藉由改變掃描速度（frame rate)來影響點矩陣導通時間以達到灰階顯示的目的，當從電流的大小上來調整，由於類比電路的反應時間較數位電路慢，而且要控制電流的大小需要較複雜的過程，因此較不具設計彈性。【發明概要】因此，本發明之目的，即在提供一種用於驅動因不同製程、材料、顏色及結構特性所導致導通電壓不同之有機1233080 A7 —__ B7 ___ 5. Description of the invention (7) The lifting speed is significantly under-shoot. On the contrary, if the size of the LED becomes smaller, the equivalent R and C load of the parasitic becomes smaller than the original standard load. At this time, the same Pre-Charge circuit is also used to precharge with the aforementioned fixed current and time. The rising speed of its driving voltage V2 waveform is very fast, but because the current of Pre-Charge will become too large compared to the shrinking LED panel, causing its voltage waveform V2 to be over-shoot. Causes damage to the OLED and shortens its life. < Afterimage phenomenon> When the current source switch 1 32 is turned on, the line current source 1 3 1 transmits the current to the day element 111 until the voltage waveform of the driving current rises to a saturation voltage relative to the set current. The size set by the current source 131 remains the same, and the voltage will always be fixed at the relative saturation voltage. The saturation voltage point is called " OLED characteristic constant current operating voltage point. &Quot; The size of different current sources will be different. " OLED characteristic constant current operating voltage point " 'Although different OLED panel materials set the same size current source, their "OLED characteristic constant current operating voltage point" will also be different, that is, the magnitude of this voltage With different characteristics of the OLED panel process, material, color and structural design, there will be completely different voltages. In operation, when the voltage of the driving current of each row of the driving circuit 130 reaches the "LED characteristic constant current operation" After the voltage point is turned off, the current source switch 132 is turned off, and its driving voltage waveform acting on the day element 111 will be exponential as shown in the fifth figure above. The speed decreases because the equivalent capacitors C1 and C2 in the pixel in store a large amount of charge. These charges will start to release current to the light-emitting body 112 in the pixel 111 after the current source switch 132 is turned off. This paper Standards are applicable to China National Standard (CNS) A4 specifications (210x297 mm) Page 9 1233080 A7 B7 V. Description of the invention (8) Due to this factor 'although the line drive circuit 丨 30 current source switch 丨 32 is off, day The light-emitting body 112 in the element ill will continue to emit light for a period of time until the charges stored in the equivalent capacitors C1 and C2 have been discharged, causing the OFF action of the current source switch 132 to fail to control the dimming of the pixel U1 synchronously. When in the dot matrix 11 The driving waveform of each pixel u 丨 driven by the row drive assembly 1 3, in each Row Duty Scan Duty, appears slightly bright during the period when it should not be bright, which will make the entire daytime surface blurred. The condition is generally known as the afterimage phenomenon. &Lt; Controlling brightness by analog circuit > 0LED is a self-luminous element, and its light emitting brightness (energy, driving current (Ι) χ on-time (T) (Duty On Time), so about Display brightness The above control can be determined by controlling the on-time (ON) of the row current source 131 of the row drive assembly 13 and the column drive assembly 12 during the scanning period, and determine the dot matrix comparison during monochrome display. Brightness, gray level and brightness of the dot matrix when displaying (} ray), and the adjustment of the color of the dot matrix when displaying in color (color). Because most related products in the past are compared by analog circuits The driving current is controlled to affect the lightness and darkness of the dot matrix, or the on time of the dot matrix is changed by changing the frame rate to achieve the purpose of grayscale display. When adjusting the size of the current, due to the response of the analog circuit Time is slower than digital circuits, and more complicated processes are required to control the current, so it is less flexible in design. [Summary of the Invention] Therefore, an object of the present invention is to provide an organic device for driving different on-state voltages caused by different processes, materials, colors, and structural characteristics.

第10頁 1233080 A7Page 10 1233080 A7

可具有甚佳發光效率之驅動方法及發光二極體點矩陣日夺其裝置。本發明之另一元之可邏輯控制電同大小、材料、等驅動方法及其裝置本發明之又~ 目的，在於提供一種在行驅動時以多位流，來因應有機發光二極體點矩陣因不效電路所造成驅動電流的變化及調整之種利用數位信號來完矩陣之晝面對比亮度目的，在於提供一成電流或導通時間M k A | 才间的控制，以控制點、灰階程度與色彩。 ;疋本發明有機發光二極體點矩陣之驅動方法，是用來驅動一具有多數呈拓查数呈矩陣狀排列之有機發光二極體畫素The driving method and the light emitting diode dot matrix which can have excellent luminous efficiency are gaining its device. Another method and device for logically controlling the same size, material, etc. of the present invention and its device The purpose of the present invention is to provide a multi-bit stream to respond to the organic light emitting diode dot matrix factor during row driving. The purpose of changing and adjusting the driving current caused by the ineffective circuit is to use digital signals to complete the day-to-day brightness comparison of the matrix. The purpose is to provide a control of the current or on-time M k A | to control the points and gray levels. Degree and color.疋 The driving method of the organic light emitting diode dot matrix of the present invention is used to drive an organic light emitting diode pixel having a matrix arrangement with a majority of topological numbers

的點矩陣，該驅動方法白人w A、 A 套匕3 · (A)以數位形式的行驅動信號控制多數行電流源，分別驄叙 J馬動α亥點矩陣的各行畫素。（b )以水平掃描信號驅動該點搞陡々勒4點矩陣之各列晝素，當水平掃描信號達到其中任何一列書音的播少一京的和描期間中，控制各行電流源同步供應至該列晝素，使欲發杏金使欲發光之晝素有電流流過。及（c)提可凋式則饋控制，依據點矩陣的特性差異進行調整，在每々人發光之晝素流過電流的瞬間，提供一大電流對該晝素内的等效電合進行快速充電達相對設定電流的飽和電壓附近。此外，在該步驟（A)中該等行電流源的產生，可由一原始電流源透過多位元邏輯控制調整而獲得，以因應該點矩陣特性差異所需之行電流的變化。亦可透過多位元邏輯控制调整该等行電流源，以數位信號配合脈波寬度調變，來本紙適用中國國家標準（_CNS) A4規格 1233080 A7 ~~—__5Ζ__ 五、發明說明'一~' 控制點矩陣的亮度與灰階，及彩色的色階控制。又，本發明之驅動方法更可包含有一步驟（D),該步驟 ()疋在母掃描期間結束的同時，瞬間對所對應晝素之等放電今進仃放電，且所進行之放電，可依據所述點矩陣的特丨生差異’採以可調式放電來調整放電時間長短作因應。【圖式之簡單說明】本發明之其他特徵及優點，在以下配合參考圖式之較佳實施例的詳細說明中，將可清楚的明白，在圖式中：第圖疋一習知有機發光二極體面板之簡略電路方塊圖；第一圖疋第一圖中之一點矩陣、一行驅動總成與—列驅動總成的等效電路圖；第三圖是該習知點矩陣受驅動之驅動時序圖；第四圖是該習知點矩陣之單一晝素與一行驅動電路連接的等效電路圖；第五圖是第四圖中該行驅動電路之一電流源開關與該晝素所獲驅動電壓的時序波形圖；第六圖是第四圖之畫素在不同負載下以相同電流與時間進行預充時的驅動電壓對照波形圖；第七圖是一驅動裝置驅動一點矩陣之簡略方塊示意圖 ’說明本發明有機發光二極體點矩陣之驅動方法的—較佳實施例；第八圖是第七圖中一行驅動總成之一行驅動單元的每一行驅動電路與所述點矩陣之晝素連接的等效電路圖；本紙張尺度適用中國國家標準（CNS) A4規格（210x297公爱）第12頁 1233080 A7 ____B7____ 五、發明說明（11 ) 第九圖是第八圖中之一驅動電壓VD、一前饋開關S1 及一放電開關S2的驅動時序圖；第十圖是第八圖中該驅動電壓VD在可調式前饋控制電壓作不同調整時之波形對照圖；第Η '圖是在第八圖中利用一可調式前饋電壓源作前饋控制的電路架構圖；第十二圖是第^—圖中各相關信號的相對時序圖；第十三圖是第Η--圖中該前饋時序單元36的電路示意圖；第十四圖是在第八圖中利用一可調式前饋電流源作前饋控制的電路架構圖；第十五圖是第十四圖中該前饋電流源的電路結構示意圖；第十六圖是第七圖中該行驅動總成的電流源產生單元及其相關電路的控制功能方塊圖；第十七圖是該第十六圖中之一電流轉接器、一電流分配器及多數偏壓產生器的電路示意圖；第十八圖疋第十六圖中之r〇w與Column掃描驅動戶斤述點矩陣之時序圖，說明Row是以pwM驅動來調節所述點矩陣亮度；第十九圖是第十八圖中關於R〇W在一 Scan Duty内之PWM控制部分的局部時序放大圖；第二十圖是用來控制一列解碼單元之解碼資料輸出的簡略PWM電路方塊示意圖；本紙張尺度顧巾國牟⑽S) A4規格（210x297公釐)_ 第13頁 1233080 五、發明說明第二^--圖是單$ Et Ατχ π 平巴點矩陣之PWM灰階顯示的電路控制方塊圖；第一十一圖疋第二十一圖中pwM灰階顯示的時序圖；十一圖疋第一十二圖中關於Column在一 Scan Duty内之PWM控制部分的局部時序放大圖；第二十四圖是本實施例中該電流轉接器將電流劃分成由4bU控制的16階電流源的電路示意圖；及第二十五圖是彩色點矩陣之pwM顯示的電路控制方The point method of this driving method is white, w A, A set 3 · (A) The row driving signal in digital form controls most of the row current sources, and each row pixel of the J-matrix α-h dot matrix is described separately. (B) The horizontal scanning signal is used to drive this point to stagger the columns of the 4-point matrix. When the horizontal scanning signal reaches one of the columns of the book sound, the current source of each line is controlled to synchronize the supply. To this column of daylight, the current that is about to glow and the daylight that is about to glow will flow. And (c) the feed-forward feed-forward control, which is adjusted according to the characteristic difference of the point matrix. At the moment when the current flows through each day when a person emits light, a large current is provided to perform the equivalent galvanization in the day. Fast charging near the saturation voltage relative to the set current. In addition, the generation of the row current sources in this step (A) can be obtained from an original current source through multi-bit logic control adjustment to respond to changes in row currents required in response to differences in dot matrix characteristics. It is also possible to adjust these line current sources through multi-bit logic control, and use digital signals in conjunction with pulse width modulation to apply the Chinese National Standard (_CNS) A4 specifications 1233080 A7 ~~ —__ 5Z__ 5. Description of the invention '一 ~' Control the brightness and gray level of the point matrix, and the color level control of the color. In addition, the driving method of the present invention may further include a step (D). At the same time as the end of the mother scanning period, the corresponding discharge of the corresponding day element is instantaneously discharged, and the discharge performed may be According to the characteristic difference of the dot matrix, an adjustable discharge is adopted to adjust the discharge time to respond. [Brief description of the drawings] Other features and advantages of the present invention will be clearly understood in the following detailed description of the preferred embodiments with reference to the drawings. In the drawings: FIG. A simplified circuit block diagram of a diode panel; the first diagram and the equivalent circuit diagram of a dot matrix, a row drive assembly and a column drive assembly in the first diagram; the third diagram is the driving of the conventional dot matrix Timing diagram; the fourth diagram is an equivalent circuit diagram of a single day element in the conventional point matrix and a row of driving circuits; the fifth diagram is a current source switch of the row driving circuit in the fourth diagram and the day element is driven The timing waveform diagram of the voltage; the sixth diagram is the comparison waveform diagram of the driving voltage when the pixels of the fourth diagram are precharged with the same current and time under different loads; the seventh diagram is a simplified block diagram of a matrix driven by a driving device 'Describes the driving method of the organic light emitting diode dot matrix of the present invention—a preferred embodiment; FIG. 8 is a diagram of each row driving circuit of a row driving unit and a row driving unit of the row driving assembly in FIG. Equivalent circuit diagram of the day-to-day connection of the dot matrix; This paper size applies the Chinese National Standard (CNS) A4 specification (210x297 public love) Page 121233080 A7 ____B7____ 5. Description of the invention (11) The ninth figure is the eighth figure A driving timing chart of a driving voltage VD, a feedforward switch S1 and a discharge switch S2; FIG. 10 is a waveform comparison chart of the driving voltage VD in FIG. 8 when the adjustable feedforward control voltage is adjusted differently; 'Figure is a circuit architecture diagram using an adjustable feed-forward voltage source for feedforward control in Figure 8. Figure 12 is the relative timing diagram of each relevant signal in Figure ^ —Figure 13; Figure 13 is Figure Η -The circuit schematic diagram of the feedforward timing unit 36 in the figure; FIG. 14 is a circuit architecture diagram using an adjustable feedforward current source for feedforward control in FIG. 8; FIG. 15 is a fourteenth diagram The schematic diagram of the circuit structure of the feedforward current source in Figure 16; Figure 16 is a block diagram of the control function of the current source generating unit of the row drive assembly and its related circuit in Figure 7; Figure 17 is the Figure 16 One current adapter, one current minute Circuit diagram of the generator and most bias generators; Figure 18 and Figure 16 are timing diagrams of the dot matrix driven by r0w and Column scans, indicating that Row is driven by pwM to adjust the dot matrix Brightness; Figure 19 is an enlarged partial timing diagram of the PWM control part of RoW in a Scan Duty in Figure 18; Figure 20 is a simplified PWM circuit used to control the output of decoded data of a row of decoding units Schematic diagram of the block; Gu Zhiguo of the paper scale S) A4 size (210x297 mm) _ page 13 1233080 V. Description of the invention Second ^-The figure shows the PWM gray level of the single $ Et Ατχ π point bar matrix Block diagram of the circuit control; timing diagram of pwM gray scale display in Figure 11 and Figure 21; partial timing magnification of the PWM control part of Column in a Scan Duty in Figure 11 and Figure 12 Fig. 24 is a circuit diagram of the current adapter in the embodiment of dividing the current into a 16-order current source controlled by 4bU; and Fig. 25 is a circuit control method of the pwM display of the color dot matrix

圖。 A 如第二十六圖是單色驅動時在單一 Scan _期間驅動裝置中有關Column與Row的驅動時序圖。如第二十七圖是16階灰階晝面驅動時在單一 ha duty期間驅動裝置中有關c〇lumn與R〇w的驅動時序圖，扣【較佳實施例之詳細說明】參閱第七圖，是本發明實施例藉以達成上述驅動方法之驅動裝置的簡略方塊示意圖，該驅動裝置是用來驅動二有機發光二極體之點矩陣2，所述點矩陣2具有多數呈矩狀排列之有機發光二極體晝素2 1。該驅動裝置中包含· 用來與相關系統作連結並且產生所有的控制驅動時序之# 制總成3、一用來驅動點矩陣2中之行（c〇lumn)畫素21 ^ 行驅動總成4、一用來驅動點矩陣2中之列（r 0 w) *素2 1 列驅動總成5 ’及一供應列行驅動總成$、4所需電源之壓單元6。該控制總成3疋用來與相關系統作連結及產庄王登體驅本紙張尺度適用中國國家標準（CNS) A4規格（210x297公釐）第14頁 1233080 五、發明說明（13 動裝置中所控制驅動時序，包括有一系統介面31、一解碼早疋32、一罝。隐早70 33、一行時序單元34、一列時序、一前饋時痒► i 4。^ 元38。、序早兀36、一重置單元37、及一時脈單Illustration. A As shown in the twenty-sixth figure, the driving timing diagram of Column and Row in the driving device during a single Scan _ during monochrome driving. For example, the twenty-seventh figure is a driving timing diagram of column and Row in a driving device during a single ha duty during a 16-level gray-scale day-surface driving. [Detailed description of the preferred embodiment] See FIG. Is a schematic block diagram of a driving device according to an embodiment of the present invention to achieve the above driving method. The driving device is used to drive a dot matrix 2 of two organic light emitting diodes, and the dot matrix 2 has most of the organics arranged in a rectangular shape. Light-emitting diode day 1 2 1. The driving device includes: # system assembly 3 which is used to connect with related systems and generate all the control driving sequences, and a pixel (21) row driving assembly which is used to drive the row (c0lumn) in the dot matrix 2. 4. A voltage unit 6 for driving the column (r 0 w) in the dot matrix 2 * prime 2 1 column driving assembly 5 ′ and a power supply unit for supplying the column driving assembly $, 4. The control assembly 3 疋 is used to connect with related systems and produce the king's body drive. The paper size applies the Chinese National Standard (CNS) A4 specification (210x297 mm) Page 14 1233080 V. Description of the invention (13 Controlled in the mobile device) The driving sequence includes a system interface 31, a decoding morning frame 32, a frame. Hidden morning 70 33, a row timing unit 34, a column timing, a feed forward tick ► i 4. ^ element 38., sequence early 36, A reset unit 37 and a clock list

έ亥系統介面3』e . . A 叙驻罢m 疋一串/並列的介面，用來提供整體驅動衷置對所述點拓睹 *、、車之控制及顯示資料的傳輸介面。該解碼單亓 1，a ^ / 加以解碼。疋將系統介面料過來的動作命令 ^ I己隐單兀33可將系統介面3 1傳送過來之點矩陣2 旦面顯示資料加以儲存，並由其—顯示資料匯流排 ata Bus达出每_ Scan _所需屬於數位電壓信號的，，行，顯示用資料。一°亥订時序單^ 34是依據該解碼單元32所送出之行控制L说（column contr〇1 signal)，產生驅動前述行驅動總成* 所需的驅動時序，並送人行驅動總成4以便產生預設之動作。有關该仃時序單元34之控制功能，透過其多數接腳的連接逐-說明如下：接_SYNCN所送出的信號，為一— 的同步信號’每當要進入一個新的Scan 〇卿，該接腳 SYNCN就會由低電位（L)上升到高電位（H)再降為^接腳 SCLK用來提供行驅動總成所需的c丨。&，讓其内部的邏輯電路依據該Clock時序來動作；接腳LT是每當一個新的 Scan Duty要開始時送出—同步信號，控制前述^驅動總成 4同步更新由記憶單元33之Display Data —送達的行顯示資料；接腳DIS是在每個Scan Duty結束時，提供一放電The system interface 3′e.. A is a serial / parallel interface, which is used to provide the overall driving interface for the above-mentioned points, vehicle control and display data transmission interface. The decoding unit 亓 1, a ^ / is decoded.命令 The action command to bring the system interface material over. ^ I have hidden unit 33 can transfer the system interface 3 1 to the point matrix 2 once the surface display data is stored, and its—display data bus ata Bus reaches every _ Scan _Required data for digital voltage signal, line, display. A ° ordering list ^ 34 is based on the row control signal (column contr01 signal) sent by the decoding unit 32 to generate the driving sequence required to drive the aforementioned row drive assembly * and send it to the row drive assembly 4 In order to produce a preset action. The control function of the timing unit 34 is explained one by one through the connection of most of its pins: the signal sent by _SYNCN is a synchronization signal 'whenever a new Scan is to be entered, the connection Pin SYNCN will rise from low potential (L) to high potential (H) and then to ^ pin SCLK to provide the required c 丨 for the row drive assembly. &, let its internal logic circuit act according to the Clock sequence; pin LT is sent out whenever a new Scan Duty is about to start—synchronous signal, controls the aforementioned ^ drive assembly 4 to synchronously update the display by the memory unit 33 Data — the line of delivery data; the pin DIS provides a discharge at the end of each Scan Duty

第15頁 1233080 五、發明說明（14 信號（DiS-charge信號），以消除儲存在晝素之寄生等效電容中的電荷，接腳FFS是用來提供該前饋時序單元36進行前饋控制（Feed-forward control)時所需的同步控制信號。該列時序單元35是依據該解碼單元32所送出之列控制信號（Row control signal)，產生驅動列驅動總成5所需= 水平掃描信號驅動時序。該前饋時序單元36是將行時序單元34送過來的前饋同步信號（FFS)，依據存放在解碼單元32中由接腳fft[2 〇] 送出的設定值，調整前饋時序之動作週期（Active duty)的時間長度，以產生前饋信號（FF信號）。忒重置單元37是用來產生整個驅動裝置所需要的重置 (Reset)信號。該時脈單元38負責產生驅動裝置中所需的原始時脈信號。該行驅動總成4包括有：一行驅動單元4丨、一以預定位元（bit)數作電流調整的電流源產生單元42、一可調地產生前饋控制所需驅動源的前饋驅動單元43 ,及一脈波調變單元44。 ° 本實施例中該行驅動單元41，是以具有128行之行驅動電路為例作說明，每個行驅動電路都是單獨而且相同的結構。該行驅動單元41可將從控制總成3中記憶單元33 之Display Data Bus送達的數位電壓信號，轉換為數位形式的電流源行驅動信號，用來驅動該點矩陣2的每一行〇led 畫素21。本紙張尺度適用中國國家標準（CNS) A4規格（210x297公釐）第16頁 1233080 A7 B7 五、發明說明（15 ) 該電流源產生單元42是以具有4bit可邏輯控制電流調整之電流源為例作說明，透過前述控制總成3之解碼單元 32所送來41^之8(：1^[3:0]信號的設定值，用來控制電流源產生單元42要送給行驅動單元41的CSI參考電流接腳的電抓大小，使電流源產生單元42能在Gray或Color的情況下調整畫面具有整體對比亮度上的控制。該電流源產生單元42的電路結構，將於以下第十六、十七圖中再進一步作說明。該前饋驅動單元43可透過前述控制總成3之解碼單元 32所送來FFC[3:0]信號之4bit設定值，來控制行驅動單元4 1所需前饋電流的電流源大小。該脈波調變單元44是在Gray或C〇1〇r的情況下用來控制脈波寬度調變（Pulse-width Modulation ，簡稱pWM)的狀態控制電路’用以產生PWM控制所需要的時序，來控制行驅動單元4!也就是說，第七圖所示之電路方塊架構，是以Gray或C〇1〇r的情況為例。而實際上也可利用該脈波調變單元44透過前述控制總成3之列時序單元35，來提供列驅動總成5所需之PWM控制時序，達到輩备料a > ώ ^ <〗早邑對比壳度之控制，其相關說明將於下文詳述。該列驅動總成5包括有一列驅動單元51及一列解碼單元52。本實施例中該列驅驅動單元51是以具有64列結構相同而且獨立的列驅動電路511(如第八圖所示）為例作^明。該列解碼單元52是依據前述控制總成3中列時序單元3$ 的驅動作解碼動作，進而控制該列驅動輩；个几1進行水平掃本紙張尺度適用中國國家標準（CNS) A4規格（210x297公釐）第17頁 1233080 A7 ______B7 五、發明說明（16 ) 描動作，驅動其某一列驅動電路5丨丨動作，以導通所有行驅動電路4 1 1驅動時所流下來的電流。在瞭解本發明之驅動裝置的簡略電路方塊的運作情後 ’續針對該驅動裝置之設計特點，分項概述如下：一、當以電流源驅動來控制晝面亮度時，為了消除點矩陣2之畫素21被點亮與滅暗初期，因等效電容效應及補償電流源驅動反應速度不足，所導致電路驅動時序與畫素 21壳度無法同步控制的現象，本實施例之行驅動總成4乃將其行驅動單元41中的每一行驅動電路，設計為具有可調前饋控制（Feed-forward control)功能，而能在以相同的電路設計來配合驅動不同製程、材料、顏色及結構特性之〇Led 點矩陣’皆可克服前述點亮初期反應速度不足的情形，讓整體點矩陣畫面在畫質上的表現有更高的發光效率及較平順的視覺效果。此外，並在畫素21滅暗時，提供對畫素2 i 所存在等效電容的放電控制，以改善殘影現象。該第一項所具備功效之相關說明將於下文之第j〜瓜點中加以敘述。二、藉由該行驅動總成4的電流源產生單元42，供應 4bit可邏輯控制電流至該行驅動單元4 1之各行驅動電路，以對整體畫面作1 6階對比亮度控制外，並且可克服點矩陣 2之畫素21或是獨立圖像（IC0n)面積的大小、材料、等效電路不同，所造成驅動電流的變化及調整，此一驅動方式無論灰階或是單色甚至全彩的面板都可應用此電路來達成。該第二項所具備功效之相關說明將於下文第IV點中加以述。 '、本紙張尺度適用中國國家標準（CNS) A4規格（210x297公釐) 第18頁 1233080 五、發明說明（17 二、本發明以數位信號來— 時Η的m a 的控制或是導通、电塔具有反應速度快、可塑性冥、 :私式化等特性。纟早色的點矩陣晝面顯示之控制電路中，制PWM㈣電流導通時間來調整單點書、的對比亮度；纟灰階的點矩陣顯示之控制與驅動中―，利 P WM控制點矩陣2之每一蚩去7】认亡β比i — 干心母旦素21的灰階程度，而用數位控制信號選擇電流強度來控制整個點矩陣2的對比亮度；在color顯示之控制與驅動中，則用pWM控制尺、Q 、b 來調配每一畫素21的色彩’-樣用數位控制信號選擇電流強度來控制整個點矩陣2的對比亮度，如此達成良好的畫質與反應速度的設計需求。該第三項所具備功效之相關說明將於下文之第V點中加以敘述。 ·<以可調式前饋控制克服駆動時序與亮度不同步> 為了克服前面所述電路驅動時序與畫素21亮度無法同步控制的的問題，本發明之行驅動單元41之128個行驅動電路中’母一行驅動電路4 11的結構如第八圖所示，並以如第九圖所示之驅動時序來加以驅動，在驅動時序中提供了可調式前饋控制（Feed-forward control )設計。違行驅動電路4 11具有串接之一行電流源4 1 2與一電流源開關4 1 3、一可在導通時提供該行電流源4 1 2辅助電流之前饋開關S 1 (Feed· forward sw·)，及一用來對畫素21之寄生電谷進行放電之放電開關S2(Dis-charge sw.)。該行電流源4 1 2是由該電流源產生單元42供應所需之電流。 ------ 本紙張尺度適用中國國家標準（CNS) A4規格（210x297公釐）第19頁 1233080 A7 五、發明說明該電流源開關413導通時，可將行電流源412供應至所對應之晝素。該前饋開關S1的作用是在電流源開關413 〇N的瞬間，經由上綱驅動Η 43 K固非常λ的輔助電流來對晝素@等效電容進行快速充電，以消除等效電容對行驅動信號動態反應速度的影響，並且補償行驅動電路4ΐ ι 在驅動畫素21時電路和驅動波形的響應速度及頻寬不足，使行驅動信號的上升（Rise)曲線能快速達到所需定電流的飽和電壓，當一 Column的Scan Duty開始時，行驅動電路 411提供至畫素21之陽極的驅動電壓VD，是在〇v的狀態 ’此時在控制上該前饋開關S1與電流源開關413會在Scan Duty開始的那一瞬間同時接通，由於前饋驅動單元43會透過si提供一個很大的輔助電流給晝素21，利用此電流對畫素21的等效電容c 1、C2快速充電，使驅動電壓vD之波形上升快速，雖然行電流源412也同時接通，但由於其電流較小，所以對於上升時間的幫助比較小，至於前饋開關 S1要導通多久才斷開，是由前述控制總成3之解碼單元32 所送至前饋驅動單元43的控制信號來決定，相較下，S1的導通時間在整個Scan Duty中所佔的時間非常短。又’行驅動總成4之電流源產生單元42，可依據點矩陣2設定的電流（亮度）、材料、結構、畫素大小等條件上的差異，來進行調整其供應至行驅動單元41中各行電流源 4 1 2之電流強度’如此行驅動單元41就不會因為材料及結構不同所造成R、C等效電路上的差異而無法使用，當驅動本紙張尺度適用中國國家標準（CNS) A4規格（210x297公釐）第20頁 1233080 A7 ------- —__B7_ 五、發明說明（19 ) 電壓VD在瞬間達到〇LED定電流的飽和電壓附近後，前饋開關S1就會斷開，剩下未達電流源飽和電壓的不足部分，由行電流源412來對晝素21進行發光的驅動動作，如此便解決發光效率損失問題。至於可調式前饋控制電壓，需要拉到多高才適當，可、差由直接量測驅動電壓VD的波形來作調整，當未提供前饋控制電壓（即前饋電壓為〇v)的情況下，驅動電壓VD的上升時間及速度’完全靠行電流源4丨2來提供，因寄生等效電容的關係，所以VD波形會如第十圖内之左側波形所示，無法在很短的時間内達到飽和的狀態，使其在一 Scan Duty 中會浪費一些發光面積，此時利用本發明之可調式前饋控制’慢慢往上調整使前饋電壓如第十圖之中間波形所示，直到前饋電壓達稍低於飽和電壓，而獲甚佳之調整狀態，此時驅動電壓VD波形的面積可以達到整個驅動週期時間的 99 /〇以上。雖然前饋電壓可以如第十圖之右側波形所示，調整至過量（Over shoot)狀態，讓畫素之發光效率達到ι〇〇0/〇，甚至比100〇/。更高，但由於過高的電壓會造成損壞或壽命縮短。藉此’經由可調前饋方式來控制驅動單元4 1中的每一行驅動電路4 1 1，使其能以相同的電路設計來配合驅動不同製程、材料、顏色及結構之0LED點矩陣時，皆可經由前饋電壓的調整，來克服初期反應速度不一的情況，使驅動時序與亮度達到驅動效率最佳化，至於此處可調式前饋控制之細部控制情形，將於下文第瓜點中再詳加說明。Page 15 1233080 V. Description of the invention (14 signal (DiS-charge signal) to eliminate the charge stored in the parasitic equivalent capacitance of day element. Pin FFS is used to provide the feedforward timing unit 36 for feedforward control. (Synchronous control signal required for feed-forward control). The column timing unit 35 is based on the row control signal sent by the decoding unit 32, and generates the required driving column drive assembly 5 = horizontal scanning signal. Drive timing. The feed-forward timing unit 36 is a feed-forward synchronization signal (FFS) sent from the row timing unit 34, and adjusts the feed-forward timing according to the setting value sent from the pin fft [2 〇] stored in the decoding unit 32. The length of the active duty cycle to generate a feedforward signal (FF signal). 忒 The reset unit 37 is used to generate the reset signal required by the entire drive device. The clock unit 38 is responsible for generating The original clock signal required in the driving device. The row drive assembly 4 includes: a row of drive units 4; a current source generating unit 42 for current adjustment by a predetermined number of bits; an adjustable real estate The feed-forward drive unit 43 of the drive source required for feed-forward control, and a pulse wave modulation unit 44. In this embodiment, the row drive unit 41 is described by taking a row drive circuit with 128 rows as an example. The row driving circuit has a separate and the same structure. The row driving unit 41 can convert the digital voltage signal sent from the Display Data Bus of the memory unit 33 in the control assembly 3 into a digital current source row driving signal for Each pixel of the dot matrix 2 is driven by OLED pixels 21. This paper size applies the Chinese National Standard (CNS) A4 specification (210x297 mm) Page 16 1233080 A7 B7 V. Description of the invention (15) The current source generating unit 42 Take the current source with 4bit logic controllable current adjustment as an example for illustration. The setting value of the signal of 8 ^ (4: 1 ^ [3: 0] sent by the decoding unit 32 of the aforementioned control assembly 3 is used to Controls the size of the electric catch of the CSI reference current pin that the current source generating unit 42 sends to the line driving unit 41, so that the current source generating unit 42 can adjust the screen to have overall contrast brightness control in the case of Gray or Color. The current Source The circuit structure of the unit 42 will be further explained in the following sixteenth and seventeenth figures. The feedforward drive unit 43 can send the FFC [3: 0] signals through the decoding unit 32 of the control assembly 3 described above. 4bit set value to control the current source size of the feedforward current required by the line drive unit 41. The pulse wave modulation unit 44 is used to control the pulse width modulation (Pulse) in the case of Gray or Co. -width Modulation (referred to as pWM) state control circuit 'used to generate the timing required for PWM control to control the line drive unit 4! That is, the circuit block structure shown in the seventh figure is Gray or C〇1 The case of 0r is taken as an example. In fact, the pulse wave modulation unit 44 can also be used to provide the PWM control timing required by the column driving assembly 5 through the column timing unit 35 of the control assembly 3 described above, to achieve the generation of materials a > FREE ^ <〗 The control of early crust contrast crust will be explained in detail below. The column driving assembly 5 includes a column driving unit 51 and a column decoding unit 52. The column drive driving unit 51 in this embodiment is described by taking an example of a column drive circuit 511 with the same structure and 64 columns (as shown in FIG. 8). The column decoding unit 52 performs the decoding operation according to the driver of the column timing unit 3 $ in the control assembly 3 described above, and then controls the column driver generation. The horizontal scanning of the paper is performed according to the Chinese National Standard (CNS) A4 specification ( (210x297 mm) Page 17 1233080 A7 ______B7 V. Description of the invention (16) Describe the action to drive a certain column of drive circuits 5 丨丨 to conduct the current flowing down when all the row drive circuits 4 1 1 are driven. After understanding the operation of the simple circuit block of the driving device of the present invention, the design characteristics of the driving device are summarized as follows: 1. When the current source is used to control the brightness of the day, in order to eliminate the dot matrix 2 In the initial period when pixel 21 is turned on and off, due to the equivalent capacitance effect and insufficient response speed of the compensation current source drive, the phenomenon that the circuit drive timing and the shell of pixel 21 cannot be controlled synchronously. The drive assembly of this embodiment 4 is to design each row drive circuit in its row drive unit 41 to have an adjustable feed-forward control function, and it can drive different processes, materials, colors and structures with the same circuit design 〇Led dot matrix 'can all overcome the lack of response speed in the initial lighting stage, so that the performance of the overall dot matrix picture has higher luminous efficiency and smoother visual effects. In addition, when the pixel 21 is darkened, discharge control of the equivalent capacitance existing in the pixel 2 i is provided to improve the afterimage phenomenon. The description of the efficacy of the first item will be described in the following points j ~. 2. The current source generating unit 42 of the row driving assembly 4 supplies a 4bit logic controllable current to each row driving circuit of the row driving unit 41 to control the entire screen with a 16-level contrast brightness control. Overcome the change and adjustment of the driving current caused by the pixel size 21 or the independent image (IC0n) area of the dot matrix 2 or the area, material, and equivalent circuit. This driving method is grayscale or monochrome or full color. This panel can be used to achieve this. A description of the efficacy of this second item will be described in point IV below. ', This paper size applies the Chinese National Standard (CNS) A4 specification (210x297 mm) Page 18 1233080 V. Description of the invention (17 2. The present invention uses digital signals to control or switch on the time-lapse ma, electrical tower It has the characteristics of fast response speed, plasticity, and privatization. 纟 Early color dot matrix in the control circuit of daytime display, PWM control ㈣ current on-time to adjust the contrast brightness of single point book, gray level dot matrix In the display control and drive-, each of the PWM control point matrix 2 is removed. 7] Recruitment β ratio i — the gray level of the mother dentin 21, and the digital control signal is used to select the current intensity to control the entire The contrast brightness of the dot matrix 2; In the control and driving of the color display, the pWM control ruler, Q, and b are used to adjust the color of each pixel 21 '-like using a digital control signal to select the current intensity to control the entire dot matrix 2 In order to achieve the design requirements of good image quality and response speed, the third item will be described in point V below. &Lt; With adjustable feedforward control to overcome throbbing Unsynchronized with brightness> In order to overcome the aforementioned problem that the driving timing of the circuit cannot be controlled synchronously with the brightness of the pixel 21, the structure of the 'parent row driving circuit 4 11' of the 128 row driving circuits of the row driving unit 41 of the present invention is as follows As shown in the eighth figure, and driven by the driving sequence as shown in the ninth figure, an adjustable feed-forward control design is provided in the driving sequence. The illegal driving circuit 4 11 has a serial connection. A row of current sources 4 1 2 and a current source switch 4 1 3, one can provide the row of current sources 4 1 2 auxiliary current feed forward switch S 1 (Feed · forward sw ·) when on, and one for pixel Discharge switch S2 (Dis-charge sw.) For discharging in the parasitic valley of 21. The current source 4 1 2 in this row is the current required by the current source generating unit 42. ------ This paper size applies China National Standard (CNS) A4 specification (210x297 mm) Page 19 1233080 A7 V. Description of the invention When the current source switch 413 is turned on, the line current source 412 can be supplied to the corresponding daylight. The feedforward switch S1 The effect is at the moment of the current source switch 413 〇N Quickly charge the day element @ equivalent capacitor via the auxiliary current of the above-mentioned driver Η 43 K solid very lambda to eliminate the effect of the equivalent capacitor on the dynamic response speed of the row drive signal, and compensate the row drive circuit 4ΐ ι in the drive picture At 21, the response speed and bandwidth of the circuit and driving waveform are insufficient, so that the rise (Rise) curve of the row drive signal can quickly reach the saturation voltage of the required constant current. When the scan duty of a column starts, the row drive circuit 411 provides The driving voltage VD to the anode of pixel 21 is in the state of 0V. At this time, the feedforward switch S1 and the current source switch 413 are turned on at the same time when Scan Duty starts. The unit 43 will provide a large auxiliary current to the day element 21 through si, and use this current to quickly charge the equivalent capacitances c 1 and C 2 of the pixel 21, so that the waveform of the driving voltage vD rises rapidly, although the line current source 412 also At the same time, but because its current is small, the help for the rise time is relatively small. As for how long the feedforward switch S1 should be turned on before it is turned off, it is controlled by the decoding unit 32 of the aforementioned control assembly 3. Feedforward control signal to the driving unit 43 determines, under comparison, Sl conduction time of the entire time Scan Duty share very short. In addition, the current source generating unit 42 of the row driving assembly 4 can adjust its supply to the row driving unit 41 according to the current (brightness), material, structure, pixel size and other conditions set by the dot matrix 2 The current intensity of the current source 4 1 2 in each row is such that the drive unit 41 will not be unusable due to differences in R and C equivalent circuits caused by different materials and structures. When driving this paper, the Chinese National Standard (CNS) is applied A4 specifications (210x297 mm) Page 20 1233080 A7 ------- —__ B7_ V. Description of the invention (19) When the voltage VD reaches the saturation voltage near the LED constant current instantaneously, the feedforward switch S1 will be turned off On, the insufficient part of the saturation voltage of the current source is left, and the driving current for the day element 21 is driven by the row current source 412, so that the problem of loss of luminous efficiency is solved. As for the adjustable feedforward control voltage, how high it is necessary to be appropriate, but the difference can be adjusted by directly measuring the waveform of the drive voltage VD. When the feedforward control voltage is not provided (that is, the feedforward voltage is 0v) The rising time and speed of the driving voltage VD are completely provided by the row current source 4 丨 2. Due to the relationship of the parasitic equivalent capacitance, the VD waveform will be as shown on the left side of the tenth figure, which cannot be achieved in a short time. The state of saturation is reached within a time, so that it will waste some light emitting area in a Scan Duty. At this time, the adjustable feedforward control of the present invention is used to slowly adjust upward to make the feedforward voltage as shown in the middle waveform of the tenth figure Until the feedforward voltage is slightly lower than the saturation voltage, and a very good adjustment state is obtained, the area of the driving voltage VD waveform can reach more than 99 / 〇 of the entire driving cycle time. Although the feedforward voltage can be adjusted to the Over shoot state as shown on the right side of the tenth figure, the pixel's luminous efficiency can reach 100,000 / 0, or even 100 //. Higher, but damage or shortened life due to excessive voltage. In this way, each row of the drive circuit 41 in the drive unit 41 is controlled via an adjustable feedforward method, so that it can use the same circuit design to drive the 0LED dot matrix of different processes, materials, colors and structures. Both can adjust the feedforward voltage to overcome the initial reaction speed and optimize the driving timing and brightness to achieve the driving efficiency. As for the detailed control situation of the adjustable feedforward control, it will be described in the following section. More details in the description.

1233080 A7 --__B7 五、發明說明（20 ) Π·<殘影現象的清除> —刖面提到當Scan duty結束時，晝素21内會儲存一些電何在等效電容，導致殘影現象，在本實施例中是利用前述^電開關S2的一端接地，另一端接到晝素2丨之陽極，在每個Scan duty結束的同時配合時序將該放電開關S2 接通小段時間，提供放電路徑在瞬間將晝素2丨之等效電容儲存的電荷進行放電，使晝素21在Scan Duty結束時便不再發允，而該S2要接通多久，是由前述控制總成3之行時序單το 34送過來的控制信號DIS來控制，該放電時間在整個scanDuty中所佔的時間非常短（可由製造商依據〇led 材料、、Ό構專條件特性上的差異來進行調整），藉此消除殘影現象。 ‘、合上述關於前饋開關s 1與放電開關S2的設置，及1233080 A7 --__ B7 V. Description of the invention (20) Π · < Removal of afterimage phenomenon >-It is mentioned that when Scan duty ends, some electricity will be stored in the day element 21, what is the equivalent capacitance, resulting in afterimage In this embodiment, one end of the aforementioned electrical switch S2 is grounded, and the other end is connected to the anode of day element 2 丨. At the end of each Scan duty, the discharge switch S2 is turned on for a short period of time with the timing provided. The discharge path instantly discharges the charge stored in the equivalent capacitor of day element 2 丨, so that day element 21 will no longer be allowed at the end of Scan Duty, and how long the S2 will be turned on is controlled by the aforementioned control assembly 3. The control signal DIS sent from the line timing sheet το 34 is used to control, and the discharge time in the entire scanDuty is very short (can be adjusted by the manufacturer based on the differences in the characteristics of the OLED material and the structure-specific conditions), This eliminates afterimages. ‘Combined with the settings of the feedforward switch s 1 and the discharge switch S2, and

其預設的時序控制，在發揮作用時，所獲得的驅動電壓VD 波形’便如前述第九圖所示，幾乎與理想的驅動電壓波形完全重疊。皿· <Feed_f〇rward control的電路架構> 此處是針對前述第I ·點中所提到的可調式前饋控制加以說明。基本上，前饋控制的電路架構可採用兩種方式，第種為刖饋電壓控制（Feed-forward voltage control)，第一種為則饋電流控制（Feed-f〇rward current control)，前述第七圖所不架構即為此種控制架構，可透過數位方式 (FFC[3:0]信號）來控制行驅動單元41所需前饋電流的電流源大小。該第一種前饋電壓控制之電路架構如第十一圖所示，Its preset timing control, when it comes into play, the obtained driving voltage VD waveform ', as shown in the aforementioned ninth figure, almost completely overlaps with the ideal driving voltage waveform. <Circuit Architecture of Feed Control> The explanation here is for the adjustable feedforward control mentioned in the aforementioned point I. Basically, the circuit architecture of feedforward control can be implemented in two ways. The first is feed-forward voltage control, and the first is feed-forward current control. The structure shown in the figure 7 is such a control structure, and the current source size of the feedforward current required by the line driving unit 41 can be controlled by a digital method (FFC [3: 0] signals). The circuit structure of the first feed-forward voltage control is shown in Fig. 11,

第22頁五、發明說明（21 ) =一:：動:、路T的電路結構外，此方式該前馈驅开431步15 ’原’疋採用一可調整電壓大小的前饋電壓源β ，來提供前饋控制所需之輔助電流。該前饋電二1二以電壓調整器(V〇hage regUlat〇r)方式來達成設計，；錯由透過電路外部的電阻來調整該電壓源的電壓大小 ==81之Ο—時序控制上，由於所需的控制信號非促’因此必須透過前述控制總《3中屬於單擊 (One心）電路之前饋時序單元36來提供。至於放電開關 ^之〇N/OFF時序控制也是同樣的情況，是利用該行驅動早兀41中更具有一屬於〇ne sh〇t電路的放電時序電路4⑺ 來產生’至於進行前饋控制與放電控制時’其各信號間相對的控制時序如第十二圖所示，前饋控制是在行驅動電路 411之電流源開關413 0N的上升緣瞬間，同步控制Feedforward sw. 0N，其調整過程只要依據電屋波形的變化慢慢調整該前饋電壓源431的電壓大小使VD連續的動態 ΟΝ/OFF電壓波形如第十二圖中所示（即如前述第十圖中間波形所示）。由於OLED點矩陣2會隨著設定的電流（亮度）、材料、結構、畫素大小等條件特性上的差異而有所不同，而前饋開關s 1與放電開關S2上的等效電阻確是固定的，一但隨著OLED面板的差異可能就會造成驅動電壓VD在上升時間及下降時間（fall time)的不足，此時就可能會出現前饋控制及放電時間不足而影響畫質的情形，因此設計上，本發明是將屬於one shot電路之前饋時序單元36及放電時序本紙張尺度適用中國國家標準（CNS) A4規格（210x297公釐）第23頁 1233080 A7 B7Page 22 V. Description of the invention (21) = One :: Dynamic: In addition to the circuit structure of the circuit T, this way the feedforward drive opens 431 steps 15 'Original' 疋 uses a feedforward voltage source with adjustable voltage β To provide the auxiliary current required for feedforward control. The feed-forward 220 is designed in the form of a voltage regulator (V0hage regUlatr); by mistake, the voltage of the voltage source is adjusted through a resistor outside the circuit == 81 of 0-timing control, Since the required control signal is non-promoting, it must be provided through the aforementioned control unit "3 belongs to the one-click (Forward) circuit" feed-forward timing unit 36. As for the discharge switch 〇N / OFF sequence control is the same situation, it is to use this line to drive the early 41 to have a discharge sequence circuit 4 属于 belonging to 〇 ne shot circuit to generate 'as for the feedforward control and discharge During control, the relative control timing of each signal is shown in Figure 12. Feedforward control is synchronously controlling Feedforward sw. 0N at the rising edge of the current source switch 413 0N of the row drive circuit 411. The adjustment process is as long as Slowly adjust the voltage of the feedforward voltage source 431 according to the change of the electrical house waveform to make the continuous dynamic ON / OFF voltage waveform of VD as shown in the twelfth figure (that is, as shown in the middle waveform of the tenth figure). Because the OLED dot matrix 2 will vary with the set current (brightness), material, structure, pixel size and other conditions and characteristics, the equivalent resistance of the feedforward switch s 1 and the discharge switch S2 is indeed Fixed, once the difference in OLED panel may cause the drive voltage VD to be insufficient in the rise time and fall time, the feed-forward control and the discharge time may be insufficient to affect the picture quality. Therefore, by design, the present invention is a feed-forward timing unit 36 and a discharge timing that belong to a one shot circuit. The paper size applies the Chinese National Standard (CNS) A4 specification (210x297 mm). Page 23 1233080 A7 B7

電路410之ON(H)的Duty時間設計成可調，以便依據實際上OLED面板的電流（亮度）、材料、結構、晝素尺寸來進订最佳化的調整’其可調式〇ne sh〇t電路結構如第十三圖所示，在此僅以該前饋時序單元36為例作說明，是將前述行時序單元34所送達之前饋同步信號FFS ,藉由控制總成 3之解碼單元32所送來之信號FFT〇〜2進行控制調整，而產生所需One shot之前饋信號ff。該第二種前饋電流控制之電路架構如第十四圖所示，该電路結構與前述電壓控制方式幾乎相同，其不同點在於該前饋驅動單元43之驅動源是採用一可調整的前饋電流源 432(Feed-f〇rward current source)，而利用控制電流大小來調整前饋電流，其餘所有的控制方式、時序與調整方式，都與前饋電壓控制相同。至於該可調整之前饋電流源432 的電路結構，如第十五圖所示，共有丨6段電流變化，方便適用於不同的OLED材料特性，電流大小是參考偏壓電路所產生的偏壓VFB’控制FFC(FFC〇_FFC3)信號調整出ΐχ 倍、2χ倍…至16χ倍的電流，並透過每一行驅動電路4ΐι 的前饋開關si，將電流供應給所對應之一行畫素21。16段電流大小中最適合的電流大小是在FF信號結束時，能即時將晝素充電達到定電流穩態時所達到的電壓大小。最適合的電流大小及FF信號波長對不同材料特性的〇Led而言^ 不相同，因此設計成外部設定是較理想的方式。 IV·藉由可邏輯控制電流來克服OLED負載變動 OLED的材料特性表現上，發光亮度與電流大小及The Duty time of the ON (H) of the circuit 410 is designed to be adjustable in order to make optimized adjustments according to the current (brightness), material, structure, and size of the OLED panel. The circuit structure is shown in the thirteenth figure. Here, the feedforward timing unit 36 is used as an example for illustration. The feedforward synchronization signal FFS sent by the aforementioned line timing unit 34 is used to control the decoding unit of the assembly 3. The signal FFT 0 ~ 2 sent from 32 is controlled and adjusted to generate the required one-shot feedforward signal ff. The circuit structure of the second feedforward current control is shown in Fig. 14. This circuit structure is almost the same as the voltage control method described above. The difference is that the drive source of the feedforward drive unit 43 uses an adjustable front Feed-source current source (432), and the feed-forward current is adjusted by using the control current. All other control methods, timings, and adjustment methods are the same as the feed-forward voltage control. As for the circuit structure of the adjustable feed-forward current source 432, as shown in the fifteenth figure, there are six current changes, which is convenient for different OLED material characteristics. The current is the bias voltage generated by the reference bias circuit. VFB 'controls the FFC (FFC0_FFC3) signal to adjust the current of ΐχ times, 2χ times ... to 16χ times, and supplies the current to the corresponding pixel 21 of one line through the feedforward switch si of the driving circuit 4ΐ of each line. The most suitable current among the 16 current levels is the voltage that can be reached when the daylight charge reaches the constant current steady state at the end of the FF signal. The most suitable current magnitude and FF signal wavelength are different for 0Led of different material characteristics, so it is ideal to design an external setting. IV · Overcome the OLED load variation by controlling the current logically. In terms of the material characteristics of the OLED, the brightness and current magnitude and

第24頁 1233080 五、發明說明（23 OLED材料面積大，以電流抑制〇TP 而電流為接面電壓的指數函數此-般=才能有較穩定的表現。因動電路輸出模組皆參考的偏^ t 電々,L源，以同一電流源所產生 ’偏考到所有的column輸出，產生相但由於OLED面柘之面接士 , 』出電爪極大… 亮度(驅動電流)不同會有 ==異，因此本發明之第七圖中行驅動以4的電流早“2,是設計為第十六圖所示架構，使行驅動單 :的128個行驅動電路411中之行電流源412不是參考同 &原°又汁上疋使该電流源產生單元42包括有一原始電々丨L源421、一電流轉接器422(current adapter)、一電流分配器423(current divider)，及多數偏壓產生_、424(心 generator)。該可邏輯控制之電流轉接器422，是將原始電流源421所提供之電流II劃分成由4bit控制的16階電流源，以影響後端所有的行驅動電路4 11的輸出電流，該電流轉接器422所輸出之16階電流源12是透過該電流分配器 423，將電流複製成4組相同的分配電流13 ,分別流入該等偏壓產生器424產生偏壓VB，以分別作為36組行驅動電路411輸出級的電流鏡參考電壓，藉此將128個行驅動電路411輸出級分組偏壓，如此便可透過前述4bit電流轉接器422調整電流的大小，來因應點矩陣所需驅動電流的變化。配合第十七圖所示，關於該4bit電流轉接器422之設計，本實施例是採取類似R-2R電路設計方式，依據原始電本紙張尺度適用中國國家標準（CNS) A4規格（210x297公釐）第25頁 1233080 A7Page 24 1233080 V. Description of the invention (23 OLED material has a large area, the current is suppressed by 0TP, and the current is an exponential function of the interface voltage. This-general = can have a more stable performance. Because the output modules of the dynamic circuit are all referenced ^ t The electric source, L source, uses all the column outputs generated by the same current source to generate phase, but due to the connection of the OLED surface, the output claw is extremely large ... The brightness (driving current) will be different == different Therefore, the row drive in the seventh figure of the present invention uses a current of 4 as early as "2", which is designed as the architecture shown in the sixteenth figure, so that the row current source 412 in the 128 row drive circuits 411 is not a reference The original source causes the current source generation unit 42 to include an original source 421, a current adapter 422 (current adapter), a current divider 423, and most bias generation _, 424 (Heart generator). The logic-controllable current adapter 422 divides the current II provided by the original current source 421 into a 16-order current source controlled by 4bit to affect all the row drive circuits in the back end. 4 11 output current, this current switch The 16th-order current source 12 output by the generator 422 is passed through the current divider 423 to copy the current into 4 groups of the same distributed current 13 and flow into the bias generators 424 to generate the bias VB, respectively, as 36 groups of lines. The current mirror reference voltage of the output stage of the driving circuit 411, thereby grouping the output stages of the 128 row driving circuits 411 into a group bias, so that the current can be adjusted through the aforementioned 4-bit current adapter 422 to correspond to the required driving current of the dot matrix In accordance with the seventeenth figure, regarding the design of the 4-bit current adapter 422, this embodiment adopts a similar R-2R circuit design method and applies the Chinese National Standard (CNS) A4 specification according to the original paper size. (210x297 mm) Page 25 1233080 A7

1233080 A7 -- —___ B7 五、發明說明（25 ) 每一畫素2 1的色彩，並用數位控制信號選擇行電流源412 的電流強度來控制整個點矩陣2的對比亮度，針對此等效果續分點說明如後。 1 ·單色對比亮度控制：如第十八圖所示，關於以Row與column掃描驅動時序形成點矩陣2晝面顯示，是將PWM設計在R〇w驅動的開關時間上，透過R0W驅動時以數位方式來進行整個點矩陣2冗度上的调節，此前述第三圖所示之習知控制方式作對照，本發明是可透過控制列驅動總成5之列解碼單元U 控制列驅動單元5 1中該等驅動電路5丨丨的導通時間（可見於月il述第十六圖中之row0〜Row63)，來調整點矩陣2的對比冗度，Row的ON時間越長，點矩陣2顯示越亮。第十九圖為第十八圖之亮度PWM控制部分局部放大說明圖，由該圖中可見Row驅動的Scan Duty不變，但藉由pwm的控制信號，對Row驅動導通時間作縮短或拉長的控制，使亮度可以自由的變暗或變亮，以數位PWM具有32(25)階的對比亮度控制為例’亦即利用5bit的控制信號來控制各晝素2 1的亮度，如此整個點矩陣2從最暗到最亮，便可具有32種明暗度變化調整。如第二十圖所示PWM電路的控制，是將PWM控制信號（PWM Controlling Signals)送經一脈衝計數器 scaler，後由一控制接腳EN輸出來決定Row導通或不導通，在前述第十九圖中之Row PWM OFF期間，該控制接腳εν便控制一組資料鎖閂Data Latches，使所有列解碼單元52的列解本紙張尺度適用中國國家標準（CNS) A4規格（21〇χ297公釐）第27頁 1233080 A7 B7 五、發明說明（261233080 A7-—___ B7 V. Description of the invention (25) The color of each pixel 21 is 1 and the digital control signal is used to select the current intensity of the row current source 412 to control the contrast brightness of the entire dot matrix 2. Continued for these effects The points are explained later. 1 · Monochrome contrast brightness control: As shown in the eighteenth figure, the dot matrix is formed by the row and column scan drive timings. 2 The daytime display is designed by the PWM at the switching time of the RW drive. When driving through R0W The redundancy of the entire dot matrix 2 is adjusted digitally. In contrast to the conventional control method shown in the aforementioned third figure, the present invention can control the column drive unit 5 by controlling the column drive unit U to control the column drive. The on-time of the driving circuit 5 丨 in the unit 51 (see row0 ~ Row63 in the sixteenth figure of the month) to adjust the contrast redundancy of the dot matrix 2. The longer the ON time of the Row, the dot matrix 2The brighter the display. Figure 19 is a partially enlarged illustration of the brightness PWM control part of Figure 18. From this figure, it can be seen that the Scan Duty driven by Row is unchanged, but the pwm control signal is used to shorten or lengthen the Row driving on time. Control, so that the brightness can be freely dimmed or brightened. Take the digital PWM with a 32 (25) level contrast brightness control as an example. That is, the 5-bit control signal is used to control the brightness of each day element 21, so the whole point From the darkest to the brightest, Matrix 2 can have 32 kinds of lightness and darkness adjustments. As shown in Figure 20, the control of the PWM circuit is to send PWM control signals (PWM Controlling Signals) through a pulse counter scaler, and then a control pin EN output to determine whether the Row is on or off. During the Row PWM OFF in the picture, this control pin εν controls a group of data latches Data Latches, so that the column decoding of all the column decoding units 52 The paper size applies the Chinese National Standard (CNS) A4 specification (21 × 297 mm) Page 27 1233080 A7 B7 V. Description of the invention (26

碼信號（Row decoding data)皆〇FF ，亦即掃描到的R〇w信 Lu並不送出’使點矩陣2上沒有任何的R〇w導通，等到 PWM ON期間’接腳EN才控制使Row decoding信號达出’使掃描到的row所對應之c〇lutnn中欲點亮的晝素 21導通並顯示出相對的圖案。因此當欲將亮度設為32階，便可藉由五位元的控制信號，將每一個R〇w的Scan Duty 分成32部分，經由接腳EN進行控制，例如可設定為：當接腳EN之輸入數值為0 ,使32階PWM全部為Row PWM ON的狀態，接腳EN 一開始便會讓R〇w心⑶以叩信號輸出 ,若輸入數值為31,則全為row PWM 〇FF的狀態，在該 Row的Scan Duty期間，接腳EN不會讓R〇w dec〇di叫信號輸出；若輸入值介於〇〜32間，EN便依據數值大小作為 Row PWM OFF所涵蓋的階數，以輸入值等於12為例，是設定32階中之〇〜12階為R〇w pwM 0FF，13〜31階為R〇w PWM ON的狀態。、在以上單色點矩陣對比亮度控制中，利用PWM調節導通時間的控制方式來控制點矩陣2的對比亮度，相較於利用電机來5周整免度，優點為利用pWM控制的反應時間較快 ’並且可以很容易的將點矩p車2 ^亮度控制為所需要的階數，可塑性較高。惟在此須作一說明的是，以上單色點矩陣對比亮度控制之PWM控制信號（pWM c〇n㈣_ Signals)，可如別述第七圖中所示來自脈波調變單&々A ,當然亦可在適當位置(如控制總成3中)另設置一脈波調變單：來控制Row驅動的開關時間，以達點矩陣2亮度上的調節The code signals (Row decoding data) are 0FF, that is, the scanned RoW letter Lu does not send out 'make no RoW on the dot matrix 2 conductive, wait until the PWM ON period' pin EN is controlled to enable Row The decoding signal reaches 'turns on' the daylight element 21 to be lit in the collut corresponding to the scanned row and displays a relative pattern. Therefore, if you want to set the brightness to 32 steps, you can use a five-bit control signal to divide each Row Scan Duty into 32 parts and control them through the pin EN. For example, you can set: When pin EN The input value is 0, so that all 32-level PWMs are in the state of Row PWM ON. At the beginning of pin EN, R0w will be output as 叩 signal. If the input value is 31, it is all row PWM 0FF. State, during this Row's Scan Duty, the pin EN will not let Row dec〇di call the signal output; if the input value is between 0 ~ 32, EN will use the value as the order covered by Row PWM OFF. Taking the input value equal to 12 as an example, it is to set the states of 0 ~ 12 steps in 32 steps as Row pwM 0FF, and 13 ~ 31 steps as R0w PWM ON. In the above-mentioned monochromatic dot matrix contrast brightness control, the contrast brightness control method of dot matrix 2 is controlled by using PWM to adjust the on time. Compared with using the motor to adjust for 5 weeks, the advantage is the response time using pWM control. 'Fast' and it is easy to control the point moment p car 2 ^ brightness to the required order, the plasticity is higher. However, it must be explained here that the PWM control signals (pWM c〇n㈣_ Signals) of the above monochrome dot matrix contrast brightness control can be derived from the pulse wave modulation unit & 々A as shown in the seventh figure. Of course, another pulse wave modulation unit can also be set at an appropriate position (such as in the control assembly 3): to control the switching time of the Row drive to adjust the brightness of the dot matrix 2

第28頁 1233080 A7 B7 五、發明說明（27 ) 如第二十六圖所示，是單色驅動時在單一 Scan duty期間驅動裝置中有關c〇lumn與R〇w的驅動時序圖。 2.Gray PWM色階控制：在前述單色顯示的情況下，是將pWM設計在R〇w掃描上，來調節整個點矩陣2的亮度，而本點中有關Gfay之色階控制，則是將PWM設計在c〇lumn的控制上，使每一個Column都有其獨立的pWM控制信號，控制每一個 Column之行電流源412的導通時間，使每一個晝素的明暗度不一樣，用於整個晝面的顯示就可以看到一個灰階顯示。若將PWM分為8階，灰階程度表示由白到黑分別為白、淺白、灰白、淺灰、灰、深灰、灰黑、黑等八種程度，點矩陣2顯示便為8階灰階晝面。配合參閱第二十一圖及二十二圖，分別為pWM灰階顯示的電路控制方塊圖及時序控制圖，以〗6階灰階晝面為例，即是將灰階程度更細分為16種，時序圖中僅示出單一 Scan duty時序圖（以1/64 Scan duty為例）。控制時序中該單色顯示用來控制亮度的接腳EN ，在掃描到所對應R〇w時是，接腳EN是維持在ON，而被掃描到的R〇w所對應的 Column資料將以四位元的信號控制一鎖閂Latch，控制所對應行驅動電路411之行電流源412流過鎖閃Latch的時間，藉此調節該Column亮度而獲得該Column灰階值的护：制，所以每一行晝素21受控於來自前述脈波調變單元44之四位元資料值（SDIN)，四位元的資料再對時間做調節，造Page 28 1233080 A7 B7 V. Description of the invention (27) As shown in Figure 26, it is the driving timing chart of column and Row in the drive device during a single scan duty during monochrome driving. 2. Gray PWM level control: In the case of the aforementioned monochrome display, pWM is designed on the Row scan to adjust the brightness of the entire dot matrix 2. The level control of Gfay in this point is The PWM is designed on the control of column, so that each column has its own independent pWM control signal, which controls the on-time of the current source 412 of each column, so that the brightness of each day element is different. A gray scale display can be seen throughout the daytime display. If the PWM is divided into 8 levels, the gray level indicates that there are eight levels from white to black: white, light white, gray white, light gray, gray, dark gray, gray black, and black. The dot matrix 2 display is 8 levels. Gray scale day surface. Refer to Figure 21 and Figure 22 for the circuit control block diagram and timing control diagram of pWM grayscale display. Take the 6th grayscale daylight surface as an example, that is, the grayscale level is further subdivided into 16 Kind, the timing chart shows only a single Scan duty timing chart (taking 1/64 Scan duty as an example). In the control sequence, the pin EN that is used for controlling the brightness of the monochrome display is scanned when the corresponding R0w is scanned, the pin EN is maintained at ON, and the Column data corresponding to the scanned R0w will be displayed as The four-bit signal controls a latch Latch, and controls the time during which the current source 412 of the corresponding row drive circuit 411 flows through the latch flash, thereby adjusting the brightness of the column to obtain the protection of the gray value of the column, so Each row of day element 21 is controlled by the four-bit data value (SDIN) from the aforementioned pulse wave modulation unit 44. The four-bit data then adjusts the time to create

第29頁 1233080 A7 --—-------?Z_ _ 五、發明說明（28 ) '--- 成每一 Column導通時間長短的不同，導致每一個晝素的冗度不1¾ ’組合成一個具有i 6階灰階畫面的點矩陣2。正個晝面在每個Row依序掃描並送入不同的sdin資料值之情況下，人類的視覺便看到一個灰階顯示的點矩陣晝面〇在PWM電路中的控制，每一 c〇iumn(即第十六圖中之 COLO〜COL 127)是利用一根如第二十一圖中所之控制接腳 Column ouKO-U?)來決定c〇lumn之行電流源412導通或不導通，若為第二十三圖所示在一 Scan Duty内的pWM 〇ff 期間，Column out控制點矩陣2上所對應之columil不導通，等到PWM ON期間，Column out控制使所對應Column 導通，便能看到畫面顯示出相對的圖案，並由導通時間長短可以看到不同的灰階程度。在第二十一圖中，當亮度設為階，由前述脈波調變單元44輸入4位元的資料SDIN( 其輸入值可為0〜15),再將該4位元的控制信號依時間調節成一 Column out 接腳，即將每一個 c〇iumn 的 duty Cycle 時間为成16部分’可設定當輸入值為〇，使16階P W Μ 全部皆為PWM ON的狀態，此時該點亮度為最亮的狀態；當輸入值是15則全為PWM OFF的狀態，Column out便不會讓疋電流流過所對應的畫素；若輸入值介於〇〜1 5間， column out便依據數值大小作為PWM OFF所涵蓋的階數，數值越大時行電流源41 2流過的時間便越短，以s d IN值 12為例’是設定32階中之0〜12階為Column PWM OFF， 13〜15階為Column PWM ON的狀態。本紙張尺度適用中國國家標準（CNS) A4規格（210x297公釐）第30頁 1233080 A7Page 29 1233080 A7 ----------? Z_ _ V. Description of the invention (28) '--- The length of the turn-on time of each column is different, resulting in the redundancy of each day element is not 1¾' A dot matrix 2 with i 6-level grayscale images is assembled. In the case where each row is sequentially scanned and sent with different sdin data values, human vision sees a gray-scale display of the dot matrix day plane. Control in the PWM circuit, each c. iumn (COLO ~ COL 127 in the sixteenth figure) uses a control pin Column ouKO-U? as shown in the twenty-first figure to determine whether the current source 412 of the line of lumens is on or off. If it is the pWM ff period in a Scan Duty as shown in the twenty-third figure, the corresponding columnil on the Column out control point matrix 2 does not turn on. When the PWM ON period, the Column out control turns on the corresponding Column, then It can be seen that the picture shows a relative pattern, and different gray levels can be seen by the length of the on time. In the twenty-first figure, when the brightness is set to step, the aforementioned 4-bit data SDIN (its input value can be 0 to 15) is input by the aforementioned pulse wave modulation unit 44, and the 4-bit control signal is input according to The time is adjusted to a Column out pin, that is, the duty cycle time of each c〇iumn is 16 parts. It can be set when the input value is 0, so that all the 16th-order PW Μ are in the PWM ON state, and the brightness at this point is The brightest state; when the input value is 15, the state is all PWM OFF, Column out will not let the current flow through the corresponding pixels; if the input value is between 0 ~ 15, column out will be based on the value The size is the number of steps covered by PWM OFF. The larger the value, the shorter the time that the current source 41 2 flows. Taking the sd IN value of 12 as an example, it is to set the 0 to 12 steps of 32 steps as Column PWM OFF. Steps 13 to 15 are the states where Column PWM is ON. This paper size applies to China National Standard (CNS) A4 (210x297 mm) Page 30 1233080 A7

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度例如右CO、Cl、C2、C3讓電晶體全部〇FF，便沒有電流流過點矩陣而不會有畫面顯示；若讓C0所控制的電晶體0N ’ C1、C2、C3所控制的電晶體OFF，流出的電流 12為1倍的固定電流，點矩陣便會有微弱亮度的畫面顯示 :若讓。所控制的電晶體〇N，c〇、c2、c3*控制的電晶體’流出的電流12為2倍的較電流，畫面整體顯不出的免度便會比電流4 i料的亮度更亮；以此類推，流過點矩陣的電流便形成16階的亮度控制，# c〇、。、 C2、C3所控制的電晶體全部〇N，整體畫面便顯示出最亮的狀態。 4.Col〇r 控制：如第二十五圖所示，在c〇1〇r顯示中，每一畫素2便具有可分別發出紅（R)、綠（G)、藍（B)光之三畫素部（不再以圖式表示），相對地每一驅動電路411便延伸為具有三獨立之紅、藍、綠行電流源來進行驅動，本發明是利用在顯示中用來控制灰階程度的pWM控制，來作色彩的調配，將Gray顯不中灰階控制的一組控制信號sdin(若為1 6階灰階，則該組控制信號為四位元），延伸為R(Red)、G(Green) 、B(Blue)三組，分別為 SDIN_R ' smN_G、sDiN ]3 ，再利用4 一組所產生的信號混合調配出所欲顯示的色彩。在彩色顯示中，整個點矩陣的亮度控制方式與灰階顯示中控制點矩陣晝面的亮度相同，即類似前述第二十四圖所示，利用數位信號來控制行電流源強度，使得點矩陣可以依需求調整不同的對比亮度。 ^紙張尺度顧巾關^7cns)八4驗（2觀97公董）------- 第32頁 1233080 A7 ^^_ B7_ 一五、發明說明（31 ) 5 ·综合以上1〜4點的說明：本發明利用OLED發光亮度=驅動電流X導通時間的特性’配合前饋控制、放電電路，及具有可邏輯電流調整的行驅動總成4的設計，而能利用數位電路控制驅動電流與導通時間，來控制整體點矩陣的亮度、灰階與色彩。控制時是利用PWM控制導通時間來調整：「單色顯示中點矩陣的免度」、「灰階顯示中每一畫素的灰階程度」，以及「彩色顯不中每一晝素色彩的r、G、b調配」。另，利用數位控制信號選擇電流強度來控制「灰階顯示」與「彩色顯示」時整個點矩陣的對比亮度。經過一般之現場可程式化閘陣列（Field Programmable Gate Array，FPGA)的模擬，上述PWM控制與電流大小控制皆能達到預期的效果，並顯現出良好的晝質與反應速度。歸納上述，本發明藉由行驅動電路4丨丨具有可調前饋控制功能，而在能以相同的電路設計來配合驅動不同製程、材料、顏色及結構特性之0LED點矩陣時，可克服點亮初期反應速度不足的情形，讓整體點矩陣畫面在畫質上的表現有更高的發光效率及較平順的視覺效果，並可在畫素滅暗時，提供對晝素之等效電容的放電控制，而改善殘影現象。此外，藉由該行驅動總成4的電流源產生單元42，供應多位元之可邏輯控制電流至各行驅動電路4ιι之行電流源412，來因應點矩陣因不同大小、材料、等效電路所造成驅動電流的變化及調整。又，亦可利用該行驅動總成= 之電流源產生單元42，所提供之可邏輯電流調整，而能以本紙張尺度適用中國國家標準（CNS) A4規格（210x297公髮）第33頁 1233080 A7 ------- B7 五、發明說明-- 數位信號配合PWM控制，達成驅動電流與導通時間的調整來達到控制點矩陣的對比亮度與灰階，及彩色的色階控制等效果，故確實能達到發明之目的。二惟以上所述者，僅為本發明之較佳實施例而已，當不月b以此限定本發明實施之範圍，即大凡依本發明申請專利範圍及發明說明書内容所作之簡單的等效變化與修飾，皆應仍屬本發明專利涵蓋之範圍内。本紙張尺度適用中國國家標準（CNS) A4規格（210x297公釐）第34頁 1233080 A7 B7 五、發明說明（33 ) 【元件標號對照】 2 點矩陣 S1 前饋開關 21 晝素 S2 放電開關 3 控制總成 42 電流源產生 xtxt —* 早兀 3 1 系統介面 421 原始電流源 32 解碼單元 422 電流轉接器 33 記憶單元 423 電流分配器 34 行時序單元 424 偏壓產生器 35 列時序單元 43 前饋驅動單元 36 前饋時序早兀 431 前饋電壓源 37 重置單元 432 前饋電流源 38 時脈單元 44 脈波調變單元 4 行驅動總成 5 列驅動總成 41 行驅動單元 51 列驅動單元 410 放電時序電路 5 11 列驅動電路 411 行驅動電路 52 列解碼單元 412 行電流源 6 升壓電路 413 電流源開關本紙張尺度適用中國國家標準（CNS) A4規格（210x297公釐）第35頁For example, if the right CO, Cl, C2, and C3 allow all the transistors to be 0FF, no current will flow through the dot matrix and no screen will be displayed. The crystal is OFF, and the current flowing out is 12 times the fixed current, and the dot matrix will display a screen with weak brightness: if let. The controlled transistor 0N, c0, c2, and c3 * control the transistor '2 and the current flowing out is 12 times the current. The inevitable degree of the screen as a whole will be brighter than the current 4i. ; And so on, the current flowing through the dot matrix forms a 16-level brightness control, #co. All the transistors controlled by C2, C2 and C3 are ON, and the whole screen shows the brightest state. 4. ColOr control: As shown in the twenty-fifth figure, in the display of COrOr, each pixel 2 has the ability to emit red (R), green (G), and blue (B) light, respectively. In the third pixel section (not shown in the figure), each driving circuit 411 is extended to have three independent red, blue, and green current sources for driving. The present invention is used to control the display. The gray level pWM control is used to adjust the color. A gray set of control signals sdin (if it is 16 gray levels, the set of control signals is four bits) is extended to R. (Red), G (Green), B (Blue) three groups, respectively SDIN_R'smN_G, sDiN] 3, and then use the signals generated by the four groups to mix and match the colors to be displayed. In the color display, the brightness control method of the entire dot matrix is the same as that in the grayscale display. The brightness of the day matrix of the dot matrix is controlled, that is, similar to the previous twenty-fourth figure, the digital signal is used to control the intensity of the line current source, so that the dot matrix You can adjust different contrast brightness according to your needs. ^ Paper scale Gu Jinguan ^ 7cns) 8 4 test (2 views 97 public directors) ---------- Page 32 1233080 A7 ^^ _ B7_ One, five, the description of the invention (31) 5 · Comprehensive above 1 ~ 4 Explanation of the point: The present invention utilizes the characteristics of OLED luminous brightness = driving current X on-time 'to cooperate with the feedforward control, discharge circuit, and the design of the row drive assembly 4 with logic current adjustment, and the digital circuit can be used to control the driving current And on-time to control the brightness, grayscale, and color of the overall dot matrix. The control is adjusted by using the PWM control on-time: "the degree of avoidance of the midpoint matrix in the monochrome display", "the gray level of each pixel in the grayscale display", and "the color of each daytime pixel in the color display." r, G, b deployment ". In addition, the digital control signal is used to select the current intensity to control the contrast brightness of the entire dot matrix during "grayscale display" and "color display". After general field programmable gate array (FPGA) simulation, the above-mentioned PWM control and current size control can achieve the desired effect, and show good day quality and response speed. To sum up, the present invention has an adjustable feed-forward control function through the row driving circuit 4 and can overcome the point when the same circuit design can be used to drive the 0LED dot matrix of different processes, materials, colors and structural characteristics. In the case of insufficient response speed in the early light period, the overall dot matrix picture has higher luminous efficiency and smoother visual effects in the picture quality, and can provide the equivalent capacitance of daylight when the pixel is dark. Discharge control while improving the afterimage phenomenon. In addition, the current source generating unit 42 of the row driving assembly 4 supplies a multi-bit logic-controllable current to the row current source 412 of each row driving circuit to respond to the dot matrix due to different sizes, materials, and equivalent circuits. The change and adjustment of the driving current. In addition, the current source generating unit 42 of the row drive assembly = can also be used, and the logic current provided can be adjusted, and the Chinese National Standard (CNS) A4 specification (210x297) can be applied to this paper size. Page 33 1233080 A7 ------- B7 V. Description of the invention-Digital signal cooperates with PWM control to achieve the adjustment of driving current and on-time to achieve the contrast brightness and gray scale of the control point matrix, and the effect of color gradation control, etc. So it can really achieve the purpose of invention. The two mentioned above are only the preferred embodiments of the present invention. When the month b is used to limit the scope of the present invention, that is, the simple equivalent changes made according to the scope of the patent application and the contents of the invention specification And modifications should still fall within the scope of the invention patent. This paper size applies to China National Standard (CNS) A4 specification (210x297 mm) Page 34 1233080 A7 B7 V. Description of the invention (33) [Comparison of component numbers] 2 point matrix S1 feedforward switch 21 day element S2 discharge switch 3 control Assembly 42 Current source generates xtxt — * Early 3 3 System interface 421 Original current source 32 Decoding unit 422 Current adapter 33 Memory unit 423 Current distributor 34 Row timing unit 424 Bias generator 35 Column timing unit 43 Feedforward Drive unit 36 feedforward timing early 431 feedforward voltage source 37 reset unit 432 feedforward current source 38 clock unit 44 pulse modulation unit 4 row drive assembly 5 column drive assembly 41 row drive unit 51 column drive unit 410 Discharging sequence circuit 5 11 column driving circuit 411 row driving circuit 52 column decoding unit 412 row current source 6 booster circuit 413 current source switch This paper size is applicable to China National Standard (CNS) A4 specification (210x297mm) ) Page 35

Claims

!233080 A8 B8 C8 _D8 六、申請專利範圍 M有機發光二極體點矩陣之驅動方法，所述點矩目；^夕 ^ 夕數呈矩陣狀排列之有機發光二極體畫素，該動方法包含： (Α) «數位形式的行驅動信號控制多數行電流源分別驅動該點矩陣的各行晝素； (Β)以水平掃描信號驅動該點矩陣之各列畫素， &平掃#说達到其中任何一列畫素的掃描期間中 &制&彳丁電流源同步供應至該列畫素，使欲發光之素有電流流過；及 (C)提供可調式前饋控制，依據點矩陣的特性差進行調整’在每_欲發光之晝素流過電流的瞬間，供一大電流對該晝素内的等效電容進行快速充電達對没定電流的飽和電壓附近。 2 ·依據申請專利範圍第1項所述有機發光二極體點矩之驅動方法’其中，該步驟（c)中的可調式前饋控制採用前饋電壓控制，利用可調整電壓大小的前饋電源’藉調整輸出前饋電壓，來對該畫素内的等效電進行快速充電達相對設定電流的飽和電壓附近。 3 ·依據申請專利範圍第1項所述有機發光二極體點矩之驅動方法’其中，該步驟（c)中的前饋控制是採用饋電流控制，利用可調整電流大小的前饋電流源，調整輸出前饋電流，來對該晝素内的等效電容進行速充電達相對設定電流的飽和電壓附近。 4·依據申請專利範圍第丨項所述有機發光二極體點矩本紙張尺度適用中國國家標準（CNS) A4規格（21〇X297公爱）第36頁陣驅當畫異提相陣是壓容陣前藉快陣 1233080 D8 六、申請專利範圍之驅動方法，更包含有一步驟（D) ，該步- 驟< 〔D)是在每一掃描期間結束的同時，瞬間對所對應畫素之等效電容進行放電〇 5. 依據中請專利範圍第 4 項所述有機發光二極體點矩陣之驅動方法，其中該步驟（D)中所進行之放電是為可調式放電，乃依據所述點矩陣的特性差異調整其放電時間長短作因應〇 6. 依據中請專利範圍第 1 項所述有機發光二極體點矩陣之驅動方法，其中該步驟（A)中該等行電流源的產生是由一原始電流源透過多位元邏輯控制調整而獲得以因應該點矩 F車」時性差異所需之 .行電流的變化〇 7. 依據中請專利範圍第 6 項所述有機發光二極體點矩陣之驅動方法，其中將該等行電流源分配成預定組數，且該原始電流源經多位元邏輯控制後更透過電流分配將電流複製成預定組數之分配電流，該等分配電流之組數是對應於該等行電流源的組數並分別供應至各組行電流: 原〇 8. 依據中請專利範圍第 1 項所述有機發光二極體點矩陣之驅動方法，其中該步驟（B)中是藉由多位元之脈波寬度調變，來控制每 -— 列畫素之掃描期間導通的時間長短 > 以調節單色點矩陣之亮度。 9. 依據中請專利範圍第 1 項所述有機發光二極體點矩陣之驅動方法，其中該步驟（A)中各行電流源在掃描期間内，是分別獨立地藉由多位元之脈波寬度調變來控本紙張尺度適用中國國家標準（CNS) A4規格（210x297公釐）第37頁 1233080 D8 六、申請專利範圍制其導通時間，以調節單色點矩陣之灰P皆程度〇 10 依據中請專利範圍第 9 項所述有機發光二極體點矩陣之驅動方法，其中，該步驟（A)中各行電流源的產生是由一原始電流源透過多位元邏輯控制調整，使該具灰階顯示之單色點矩陣獲得預定階數的畫面對比亮度調整〇 11 依據中請專利範圍第 9 項所述有機發光二極體點矩陣之驅動方法，其中，該步驟（C)中對每一欲發光之晝素流過電流瞬間所進行的前饋控制，是在所對應行電流源經脈波寬度調變後之導通瞬間，提供一大電流對該畫素内的等效電容進行快速充電。 12, ，依據中請專利範圍第 1 項所述有機發光二極體點矩陣之驅動方法，其中，當所述點矩陣的晝素為彩色時該步驟（A)中各行晝素是由紅、藍、綠行電流源進行驅動並分別獨立地藉由多位元之脈波寬度調變來控制紅、藍綠行電流源的導通時間，以調節彩色點矩陣之色彩〇 13, .依據中請專利範圍第 12 項所述有機發光二極體點矩陣之驅動方法，其中，該步驟（A)中各紅、藍綠行電流源的產生，是由一原始電流源透過多位元邏輯控制調整使該具彩色顯示之點矩陣獲得預定階數的晝面對比亮度調整。 14 • 一種有機發光二極體點矩陣之驅動裝置所述點矩陣具有多數呈矩陣狀排列之有機發光二極體畫素該驅本紙張尺度適用中國國家標準（CNS) A4規格（210x297公釐）第38頁 1233080! 233080 A8 B8 C8 _D8 VI. Patent application range M Organic light-emitting diode dot matrix driving method, the point moments; ^ ^ ^ The number of organic light-emitting diode pixels arranged in a matrix, the moving method Contains: (Α) «The digital form of the row drive signal controls the majority of the row current source to drive each row of the dot matrix of the dot matrix; (B) The horizontal scan signal drives the columns of pixels of the dot matrix, & 平扫 # 说A & system & current source is synchronously supplied to the pixels in the scanning period to reach any one of the pixels, so that the current to be emitted flows through the pixels; and (C) provides adjustable feedforward control, according to the point The difference in the characteristics of the matrix is adjusted. At the moment when the current flows through the day element that is to emit light, a large current is provided to quickly charge the equivalent capacitance in the day element to the vicinity of the saturation voltage of the indefinite current. 2 · The driving method of the point moment of the organic light emitting diode according to item 1 of the scope of the patent application, wherein the adjustable feedforward control in step (c) adopts feedforward voltage control, and feedforward with adjustable voltage The power supply 'adjusts the output feedforward voltage to quickly charge the equivalent electricity in the pixel to a value close to the saturation voltage of the set current. 3. The driving method of the point moment of the organic light emitting diode according to item 1 of the scope of the patent application, wherein the feedforward control in step (c) is a feedforward control, and a feedforward current source with adjustable current is used. , Adjust the output feedforward current to quickly charge the equivalent capacitance in the day element to the vicinity of the saturation voltage relative to the set current. 4 · According to Item 丨 of the scope of the patent application, the point size of the organic light-emitting diode is applicable to the Chinese National Standard (CNS) A4 specification (21 × 297). Page 36 Quick array 1233080 D8 before the capacity array VI. The driving method of patent application range further includes a step (D), which is-step (〔D) is at the same time as the end of each scanning period, the corresponding pixels The equivalent capacitance is discharged. 5. According to the driving method of the organic light emitting diode dot matrix described in item 4 of the patent scope, wherein the discharge in step (D) is an adjustable discharge, which is based on the The difference in the characteristics of the dot matrix adjusts the discharge time to respond to it. According to the driving method of the organic light emitting diode dot matrix described in item 1 of the patent scope, wherein the current source of the row current source in step (A) Produced by one The starting current source is obtained through multi-bit logic control adjustment to meet the point-to-point F car time difference. Line current changes. 7. According to the organic light-emitting diode point described in the patent claim 6 A method for driving a matrix, in which the rows of current sources are allocated into a predetermined group number, and the original current source is controlled by multi-bit logic, and the current is further copied to a predetermined group number of distributed currents through current distribution. The number of groups is the number of groups corresponding to the row current sources and is supplied to each group of row currents separately: Original 〇8. According to the driving method of the organic light emitting diode dot matrix described in the first item of the patent scope of the patent, where this step In (B), multi-bit pulse width modulation is used to control the length of time during which each pixel in the scanning period is turned on to adjust the brightness of the monochrome dot matrix. 9. According to the driving method of the organic light emitting diode dot matrix described in item 1 of the patent scope, wherein the current sources of each row in step (A) are independently driven by multi-bit pulse waves during the scanning period. Width adjustment to control the paper size Applicable to China National Standard (CNS) A4 (210x297 mm) Page 37 1233080 D8 6. Apply for a patent to control its on-time to adjust the gray P of the monochrome dot matrix. According to the driving method of the organic light emitting diode dot matrix described in item 9 of the patent application, wherein the generation of the current sources in each row in step (A) is controlled by an original current source through multi-bit logic control so that the The monochromatic dot matrix with grayscale display obtains a predetermined order of screen contrast brightness adjustment. 11 According to the driving method of the organic light emitting diode dot matrix described in item 9 of the patent scope of the application, in this step (C), Every desire The day prime flow feedforward control overcurrent instantaneously carried out, is the corresponding line of the current source is pulse after the width modulation is turned on instantly, providing a large current to the equivalent capacitance in the painting prime fast charging. 12, according to the method for driving an organic light emitting diode dot matrix described in item 1 of the patent scope, wherein when the day elements of the dot matrix are colored, the rows of the day elements in step (A) are represented by red, The blue and green line current sources are driven and the on-time of the red, blue and green line current sources are controlled independently by multi-bit pulse width modulation to adjust the color of the color dot matrix. The driving method of the organic light emitting diode dot matrix according to item 12 of the patent scope, wherein the generation of the red, blue and green row current sources in step (A) is adjusted by an original current source through multi-bit logic control The dot-matrix with color display is adjusted to obtain the day-to-day specific brightness of a predetermined order. 14 • A driving device for an organic light emitting diode dot matrix, the dot matrix has most of the organic light emitting diode pixels arranged in a matrix. The paper size of this paper is applicable to China National Standard (CNS) A4 (210x297 mm) Chapter 1233080

六、申請專利範圍動裝置包含：一控制總成，與相關系統作連結及產生整體驅動裝置中所需之控制驅動時序；6. Scope of patent application The motion device includes: a control assembly that connects with related systems and generates the required control driving sequence in the overall driving device;

一行驅動總成，包括有受該控制總成以預定驅動時序控制的：一具有分別用來驅動所述各行畫素之行驅動電路的行驅動單元、一可供應該等行驅動電路所需電流之電流源產生單元，及一可調地產生前饋控制所需之驅動源的前饋驅動單元；該行驅動單元之每一行驅動電路，具有串接之一行電流源與一電流源開關 ’及一控制一輔助電流供應至所對應晝素之前饋開關，該打電流源是由該電流源產生單元供應所需之電流 ’遠電流源開關接通瞬間；該前饋驅動單元是依據所述點矩陣的特性差異進行調整其驅動源，並透過該前饋開關接通’而提供該辅助電流對畫素内的等效電容快速充電達相對設定電流的飽和電壓附近；及A row driving assembly includes those controlled by the control assembly at a predetermined driving timing: a row driving unit having a row driving circuit for driving the rows of pixels, and a current required for supplying the row driving circuits. A current source generating unit, and a feedforward drive unit that tunably generates a drive source required for feedforward control; each row of the row drive circuit has a row of current source and a current source switch in series; and a Controlling the supply of an auxiliary current to the corresponding day-forward feedforward switch, the current source is the current required by the current source generating unit, the moment when the remote current source switch is turned on; the feedforward drive unit is based on the point matrix The characteristics of the driver are adjusted, and the auxiliary current is provided to quickly charge the equivalent capacitance in the pixel to the vicinity of the saturation voltage relative to the set current through the feedforward switch being turned on; and

列驅動總成’包括有一具有多數列驅動電路之列驅動單元’该荨列驅動電路是受該控制總成以水平掃描“號控制，而在不同的掃描期間内分別驅動所述點矩陣中各列晝素，以導通所有行驅動電路驅動時由行電流源所流下來的電流。 1 5 ·依據申請專利範圍第丨4項所述有機發光二極體點矩陣之驅動裝置，其中，該控制總成包括有一用來產生驅動該行驅動總成所需驅動時序之行時序單元一用來產生驅動該列驅動總成所需水平掃描信號驅動時序之The column driving assembly includes a column driving unit having a plurality of column driving circuits. The net driving circuit is controlled by the control assembly with a horizontal scanning number, and each of the dot matrixes is driven in different scanning periods. The column element is used to turn on the current flowing from the row current source when driving all the row driving circuits. 1 5 · According to the driving device of the organic light emitting diode dot matrix described in the patent application No. 丨 4, wherein the control The assembly includes a row timing unit for generating a driving timing required to drive the row driving assembly, a row timing unit for generating a horizontal scanning signal driving timing required to drive the column driving assembly,

第39頁 1233080 戠 C8 D8 六、申請專利範圍列時序單元，及一用來產生前饋信號之前饋時序單元 y 該前饋時序單元便是以其前饋信號，來控制該等行驅動電路之前饋 3幵 1 關的動作時序。 16 依據中請專利範圍第 15 項所述有機發光二極體點矩陣之驅動裝置，其中該前饋時序單元是為一可調式單擊電路是依據所述點矩陣的特性差異，而藉由該控制總成控制調整其前饋信號的時間長短作因應 0 17 依據中請專利範圍第 14 項所述有機 i發光二極體點矩陣之驅動裝置，其中，該前饋驅動單元之驅動源是採用一可調整電壓大小的前饋電壓源，依據所述點矩陣的特性差異而作電壓調整，來提供前饋控制所需之輔助電流〇 18, .依據中請專利範: 圍第 14 項所述有機 i發光二極體點矩陣之驅動裝置，其中該前饋驅動單元之驅動源是採用一可調整的前饋電流源，依據所述點矩陣的特性差異而作電流調整，來提供前饋控制所 •需之輔助電流〇 19 .依據中請專利範1 圍第 18 項所述有機 :發光二極體點矩陣之驅動裝置，其中該可調整之前饋電流源是藉由該控制總成，以預定位元之數位信號控制其電流源大小 20 .依據中請專利範圍第 14 項所述有機 :發光二極體點矩陣之驅動裝置，其中該行驅動單元之每一驅動電路更具有一放電開關 5 該放電開關的一端接地，另一端接到晝素之陽極在該電流源開關斷開瞬間該放電本紙張尺度適用中國國家標準（CNS) A4規格（210x297公釐）第40頁 1233080 A8 B8 C8 D8 六、申請專利範圍開關是同時接通而瞬間對所對應晝素之等效電容進行放電 0 21 依據中請專利範圍第 20 項所述有機發光 > 二 ‘極體點矩陣之驅動裝置，其中，該行驅動單元中更具有一放電時序電路用來控制該尊行驅動電路之放電開關的動作時序該放電時序電路為一可調式單擊電路，是依據所述點矩陣的特性差異，調整其放電時間長短作因應 22 依據中請專利範圍第 14 項所it i准 .機 i發 .光 k 二極體點矩陣之驅動裝置，其中，該電流源產生單 .元 ^包括有 ·· 提供原始電流之原始電流源；一電流轉接器，可將該原始電流源所提供之電流以預定位元數作多階電流調整後輪「出及一電流分配器，將該電流分配器所輸出之電流複製成多組分配電流並將該等分配電流分別供應至作對應組數分配之該等行驅動電辟藉此，可透過該電流轉接器作多位元電流調整來因應所述點矩陣特性差異所需驅動電流的變化〇 23, .依據中請專利範圍第 22 項所站 ί有 ‘機 ;發光極體點矩陣之驅動裝置，其中，該電流源產生單元更包括有多數偏壓產生器，該等偏壓產生器分別接收該電流分配器所出之該等分配電流而產生偏壓以分別作為各組行驅動電路輸出級的電流鏡參考電壓使該等行驅動電路 to 出級分組偏壓 0 本紙張尺度適用中國國家標準（CNS) A4規格（210x297公釐）第41頁 1233080 έ88 C8 D8 六、申請專利範圍 24 依據中請專利範圍第 14 項所述有機發光 > 二 >極 :體點矩陣之驅動裝置 y 其中該控制總成用來控制該列驅動單元之每一列驅動電路的掃描信號，是經由多位元之脈波寬度調變而改變所對應之掃描期間的時間長短 > 以調節單色點矩率之1 针比亮度。 25 依據中請專利範圍第 14 項所述有機發 ‘光 ,二極體點矩陣之驅動裝置其中，該行驅動單元之各行驅動電路是分別獨立地藉由多位元之脈波寬度調變 J 來控制其行電流源之導通時間以調節單色點矩陣之灰階程度 26 依據中請專利範圍第 25 項所述有機發 .光，二極體點矩陣之驅動裝置，其中該電流源產生單元是以預定位元數作多階電流調整後供應至該等行驅動電路 5 使該具灰階顯示之單色點矩陣獲得預定階數的畫面對比亮度調整 0 27, .依據中請專利範圍第 26 項所述有機 i發光二極體點矩陣之驅動裝置，其中，該電流源產生單 ‘元包括 : 一提供原始電流之原始電流源；一電流轉接器 > 可將該原始電流源所提供之電流以預定位元: 敫作多階電流調整後輪 r出 y 及 —一電流分配器將該電流分配器所輸出之電流 9 複製成多組分配電流 y 並將該等分配電流分別供應至作對應組數分1 配之1 1亥等行驅動電路；藉此該電流源產生單元能產生以預定位元數作本紙張尺度適用中國國家標準（CNS) Α4規格（210x297公釐）第42頁 1233080 588 BCD 六、申請專利範圍多階調整之電流，並供應至該等行驅動電路。本紙張尺度適用中國國家標準（CNS) A4規格（210x297公釐）第43頁Page 39 1233080 戠 C8 D8 VI. Patent application range timing unit, and a feed-forward timing unit for generating feed-forward signal y This feed-forward timing unit uses its feed-forward signal to control the rows of drive circuits before Feed 3 幵 1 off action sequence. 16 According to the driving device of the organic light emitting diode dot matrix according to item 15 of the patent scope, wherein the feedforward timing unit is an adjustable click circuit based on the difference in characteristics of the dot matrix, and The control assembly controls the time length of adjusting the feedforward signal according to 0 17 according to the driving device of the organic i light emitting diode dot matrix described in the patent claim No. 14; wherein the driving source of the feedforward driving unit is A feed-forward voltage source with adjustable voltage can adjust the voltage according to the characteristics of the point matrix to provide the auxiliary current required for feed-forward control. An organic i light emitting diode dot matrix driving device, wherein the driving source of the feedforward driving unit is an adjustable feedforward current source, and the current is adjusted according to the difference in characteristics of the dot matrix to improve Auxiliary current required for feedforward control 〇19. According to the organic device of the light emitting diode point matrix described in item 18 of the patent claim 1, the adjustable feedforward current source is controlled by the control The assembly controls the size of its current source by a digital signal of a predetermined bit. According to the organic range of the light emitting diode dot matrix driving device described in item 14 of the patent application, wherein each driving circuit of the row driving unit is more A discharge switch 5 is provided. One end of the discharge switch is grounded, and the other end is connected to the anode of daylight. The discharge is performed at the moment the current source switch is turned off. This paper applies the Chinese National Standard (CNS) A4 specification (210x297 mm). Page 40 1233080 A8 B8 C8 D8 6. The patent application range switch is turned on at the same time and instantly discharges the equivalent capacitance of the corresponding daylight element. 0 21 Organic light emission according to item 20 of the patent scope > Dipole moment An array driving device, wherein the row driving unit further has a discharge sequence circuit for controlling the operation sequence of the discharge switch of the row drive circuit. The discharge sequence circuit is an adjustable click circuit based on the point matrix. According to the difference in characteristics, adjust the discharge time according to 22 of the patent scope of the patent application. It is a device that emits light. A k-diode point matrix drive device, in which the current source generates a single element. Includes an original current source that provides the original current; a current adapter that can adjust the current provided by the original current source by a predetermined number of bits for multi-level current adjustment. The rear wheel "out and a current distributor, The current output by the current splitter is copied into multiple sets of distributed currents and these distributed currents are respectively supplied to the banks that drive the corresponding number of distributions. The connector performs multi-bit current adjustment to respond to the change in driving current required in response to the difference in the characteristics of the dot matrix. 23 According to the patent application No. 22, there is a machine; a driving device of the dot matrix of the light emitting body, Wherein, the current source generating unit further includes a plurality of bias generators, and the bias generators respectively receive the distributed currents generated by the current distributor to generate a bias to serve as the output stage of each group of row driving circuits. The reference voltage of the current mirror causes the row drive circuits to be grouped to a bias voltage of 0. This paper size applies to the Chinese National Standard (CNS) A4 specification (210x297 mm) Page 41 1233080 172 88 C8 D8 VI. Application scope 24 The organic light-emitting > two > poles described in item 14 of the patent scope: a driving device of a body point matrix, wherein the control assembly is used to control a scanning signal of each column driving circuit of the column driving unit, Element of multi-bit pulse width modulation and changed during a scan time corresponding to the length of the short > In a single needle adjust the color point of moment rate ratio of luminance. 25 According to the driving device for organic light emitting and diode dot matrix as described in item 14 of the patent scope, wherein each row driving circuit of the row driving unit is independently modulated by a multi-bit pulse wave width J To control the on-time of its row current source to adjust the gray level of the monochromatic dot matrix 26 according to the organic patent, the driving device of the light, diode dot matrix described in item 25 of the patent scope, wherein the current source generating unit It is based on a predetermined number of bits for multi-level current adjustment and is supplied to the row drive circuits 5 so that the monochrome dot matrix with grayscale display can obtain a predetermined level of screen contrast adjustment 0 27, according to the patent application. The driving device of the organic i light emitting diode dot matrix according to item 26, wherein the current source generating unit includes: an original current source that provides an original current; a current adapter > Predetermined bits can be provided by the current provided by the original current source: 敫 Multi-level current adjustment is performed on the rear wheel r and y and a current divider copies the current 9 output by the current divider into multiple sets of distributed currents. y and supply these distributed currents to the driving circuits of the corresponding groups, such as 1 and 1; the current source generating unit can generate a predetermined number of bits as the paper size applicable to Chinese national standards (CNS ) Α4 specification (210x297 mm) Page 42 1233080 588 BCD Six, the patent application scope of multi-stage adjustment of the current, and supply to the line drive circuit. This paper size applies to China National Standard (CNS) A4 (210x297 mm) page 43