TWM395253U - Has disconnect power-saving function organic display - Google Patents

Has disconnect power-saving function organic display Download PDF

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Publication number
TWM395253U
TWM395253U TW99216416U TW99216416U TWM395253U TW M395253 U TWM395253 U TW M395253U TW 99216416 U TW99216416 U TW 99216416U TW 99216416 U TW99216416 U TW 99216416U TW M395253 U TWM395253 U TW M395253U
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Taiwan
Prior art keywords
light
emitting
control module
disconnecting
power
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TW99216416U
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Chinese (zh)
Inventor
Yu-Pin Liao
ying-ju Liu
Mao-Yuan Chan
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Winstar Display Co Ltd
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Priority to TW99216416U priority Critical patent/TWM395253U/en
Publication of TWM395253U publication Critical patent/TWM395253U/en

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Description

五、新型說明: 【新型所屬之技術領域】 本創作疋一種有機發光二極體顯示器,尤其是關於一 種/、有斷開省電功能的有機發光二極體顯示器。 【先前技術】 顧—^考第一 A〜C圖、第三圖,既有之有機發光二極體 ^:之每個像素91,92均為—個有機發光二極體,由於 ^機發光二極體係由複數層有機材料堆疊組成,其等效 =以是一發光元件0LED及-電容。並聯。其中,該 :1會影響該有機發光二極體之開關速度,進而影響顯 不特性與顯示效果(例如:亮度不均)。 如苐三圖所示,—4X4 is* _l· 陣式有機發光二極體顯示器 之,動方式係透過共電極_掃晦(_㈠ 2_JC〇M4···),並在每個共電極_之工作週期 ” :☆母個像素之訊號電極輸入與顯示内容有關的顯 丁電SS1〜SS4,因此,每個顯示圖框(f_e)最後 可能如第三圖所示包含複數個關閉狀態像㈣以及複數個 開啟狀態像素92 ’而完成訊息顯示。 為了降低每個像素91,92之電容Μ導致顯示效果不佳 之現象目别遂在輸入該顯示電訊號〜s別與對應之 像素時,通常以下列方式進行: 。 ▲⑴預充電(Pre-charging):先對每個欲進入開啟狀 悲之像素92之電容C1進行預充電(pre-charging),如第二 M395253 A圖,係先將一預充電開關S1開啟(sh〇rt)後,讓電力对該 電容C1充電,如一預充電路徑Fc〇 Λ (2) 啟動發光元件OLED:完成預充電後,斷開該預充 電開關si而開啟一驅動開關S3,使電力沿著一驅動路徑 Fon啟動該發光元件〇LED,如第二b圖所示。 工 (3) 放電(discharging):為了完全、快速將該發光元件 OLED關閉成為該關閉狀態像素91,則開啟—放電開關幻 後,使該電容ci沿著一放電路徑Fd進行放電,如第二◦ 圖所示。 前述的預充電方式,係對每個欲形成該開啟狀態像素 92之發光元件OLED’其工作週期㈣初期施予一額外電 力’使該電容C1快速充電,解決既有顯示控制技術因為電 容C1導致充電速度過慢而影響顯示品質的問題。 然而,如第四圖所示’既有的預充電技術在每一像素 之兩個相鄰工作週期都為開啟狀態像素92時,對該像素所 輸入的預充電電力則變成多餘,不僅造成電力浪費,更可 能會因為像素之驅動電力長期過載(預充電需要輸入瞬間 高壓或高電流予該像素)而導致毀損、或縮短壽命。 【新型内容】 為了解*既有之#機;發光二極體預充電技術所造成的 電力浪費及元件毁損的技術問題,本創作係在既有技術之 放電(discharging)步驟改採斷開方式達成,藉此節省電力浪 費及解決因為驅動電力長期過載導致壽命縮短之技術問 4 題’達到省電及延長有機發光二極體使用壽命之技術效果。 配合解決前述之技術問題及達到創作目的,本 二一種具有斷開省電功能的有機發光二極體顯示器,其勺 3 一驅動控制模組、分別與該驅動控制模組連接之一;二 上的發光元件,以及-對-連接於該-個以上::光:: 門每個該斷開元件連接於對應之該 ,τ 共電極之間,其令·· 該驅動控制模組驅動任意的該發光元件開啟時 制所對應之該斷開元件為關閉(Short)狀態;及 控:模組使該發光元件關閉時,同時控制所對 應之。亥斷開π件為斷開(open)狀態。 路2二該斷開元件為-電晶體元件、-電晶體開關電 路或可電子控制之開關元件。 藉此’本創作具備如下優點: 1 ·發光7L件關閉過程’幾乎無須對該寄 電,不僅保存電容的雷/ x 罨谷重歿放 反應速度。的電何、降低功耗’更提升發光元件之 2無須配置既有技術之預充電電路除節省開 成本之外,更因為免除對發光元件之預 提供瞬間高電壓哎電ά ) · X光7G件 电mL) ’使该發光元件之壽命增長。 【貫施方式】 發光二極體顯示器之較佳實施例的等效電路 請ί:第一圖’其為本創作具有斷開省電功能的有機 圖,其包含 °動控制模組1 Q、分別與該驅動控制模組^ 〇連接之一個以 的發光元件20,以及一對一連接於該一個以上的發光元 件20之-個以上的斷開元件40。 X 土光元件20為一有機發光二極體,每個該發光元件 2〇可以等效視為-理想發光二極體21及一寄生電容23之 r κ 〇玄驅動控制才莫粗,〇 &定輸入—驅動電力i該發光元 件0,時機點’使該發光元件2〇之該理想發光二極體” 產生光輸出。§本貫施例為包含複數個該發光元件2 〇以陣 J化式排歹i組成時’該驅動控制模組,◦則控制各發光元件 2〇之時間、週期,讓複數個該發光元件2〇顯示圖式或動畫。 為了讓驅動每個發光元件2Q之反應速度及反應時間準 確性提升,同時能夠節省每次驅動該發光元件2Q必須先充 飽邊寄生電容23所導致的耗能問題,本實施例在每個發光 兀件20與—共電極c〇M之間串接_個該斷開元件,其 中’該斷開元件40之形式、種類不限定,可以是一電晶體 兀件、-電晶體開關電路或—可電子控制之開關元件。 可大為節 該驅動控制模組10控制該斷開元件4〇在對應連接之 該發光元件2◦啟動週期(on duty)呈關閉(sh〇「t)狀態,使該 驅動控制模組10至該共電極c⑽形成可導通迴路,該發 光元件20遂可產生光輸出。當該發光元件2◦欲至關閉州 狀態’該驅動控制I组10直接斷開(〇_),由於該驅動控 制模組10與共電極C0M之間的迴路斷開,該寄生電容23 處於浮接狀態’所儲存的電荷幾乎不會或僅會緩慢釋除, 因此,使該寄生電容23在所屬之該發光元件2Q下個開啟 週期,可以在非常短的時間内完成充電,如此 6 M395253 省電力’同時可讓發光元件20之反應速度快速、精確。 藉由前述之說明可知,本實施例在發光元件2〇開啟、 關閉過程,幾乎無須對該寄生電容23重複充放電,不僅降 低功耗,更提升發光元件2〇之反應速度。而且,再也無須 配置既有技術之預充電電路,且更因為免除對發光元件’扣 之預充電(對發光兀件2〇提供瞬間高電壓或電流),使該 發光元件20之壽命增長。 ΛV. New description: [New technology field] This is an organic light-emitting diode display, especially for an organic light-emitting diode display with/with power-saving function. [Prior Art] Gu-^ test the first A~C picture, the third picture, the existing organic light-emitting diode ^: each pixel 91, 92 is an organic light-emitting diode, due to the machine light The two-pole system consists of a plurality of layers of organic materials stacked, the equivalent of which is a light-emitting element OLED and capacitor. in parallel. Among them, the :1 will affect the switching speed of the organic light-emitting diode, thereby affecting the display characteristics and display effects (for example, uneven brightness). As shown in Figure 3, the 4X4 is* _l· array of organic light-emitting diode displays, the dynamic mode is transmitted through the common electrode _ broom (_ (a) 2_JC 〇 M4 · · ·), and at each common electrode _ "Work cycle": ☆ The signal electrode of the mother pixel is input with the display contents SS1 to SS4. Therefore, each display frame (f_e) may finally contain a plurality of closed state images (4) as shown in the third figure. A plurality of open state pixels 92' are used to complete the display of the message. In order to reduce the capacitance of each of the pixels 91, 92, the display effect is not good. When inputting the display signal to the corresponding pixel, the following is usually The mode is as follows: ▲ (1) Pre-charging: pre-charging each capacitor C1 that wants to enter the open-faced pixel 92, as shown in the second M395253 A picture, After the charging switch S1 is turned on (sh〇rt), the power is charged to the capacitor C1, such as a pre-charging path Fc〇Λ (2) to activate the light-emitting element OLED: after the pre-charging is completed, the pre-charging switch si is turned off and a driving is turned on. Switch S3 to make power along a drive The path Fon activates the light-emitting element 〇LED, as shown in the second b. (3) Discharging: In order to completely and quickly turn the light-emitting element OLED into the off-state pixel 91, the on-discharge switch is turned on. The capacitor ci is discharged along a discharge path Fd, as shown in the second diagram. The pre-charging method described above is for each of the light-emitting elements OLED's to form the open-state pixel 92. Give an extra power 'to make the capacitor C1 charge quickly, to solve the problem that the existing display control technology affects the display quality because the capacitor C1 causes the charging speed to be too slow. However, as shown in the fourth figure, the existing pre-charging technology is When two adjacent working cycles of one pixel are the on-state pixels 92, the pre-charged power input to the pixel becomes redundant, which not only causes waste of power, but also may cause long-term overload of the driving power of the pixel (precharge requires input Instantaneous high voltage or high current is applied to the pixel), resulting in damage or shortening the life. [New content] To understand the * existing machine; LED pre-charging technology The technical problem of power wastage and component damage caused by this technology is achieved by changing the disconnection mode of the existing technology in the discharging step, thereby saving power waste and solving the technical problem of shortening the life due to long-term overload of the driving power. 4 questions 'To achieve the technical effect of saving power and prolonging the service life of the organic light-emitting diode. In combination with solving the above technical problems and achieving the purpose of creation, the second organic light-emitting diode display with a power-saving function is scooped 3 a driving control module, one of which is respectively connected to the driving control module; two light emitting elements, and - pairs are connected to the one or more:: light:: each of the disconnecting elements is connected to the corresponding Between the τ common electrodes, the driving control module drives any of the disconnecting elements corresponding to the opening of the illuminating element to be in a "Short" state; and the control module: when the illuminating element is turned off At the same time, the control corresponds to it. The π piece is turned off in the open state. The disconnecting element of the circuit 2 is a transistor element, a transistor switching circuit or an electronically controllable switching element. In this way, the creation has the following advantages: 1 • The process of turning off the 7L piece of light is almost unnecessary to be charged, and not only the lightning/x 罨 valley of the capacitor is stored. What is the power, lowering the power consumption', and the need to configure the pre-charging circuit of the prior art, in addition to saving the cost of opening, and eliminating the need to provide instantaneous high-voltage voltage to the light-emitting element. · X-ray 7G Piece of electricity mL) 'to increase the life of the light-emitting element. [Embodiment] The equivalent circuit of the preferred embodiment of the LED display: ί: The first figure is an organic diagram with a power-saving function, which includes a motion control module 1 Q, The light-emitting elements 20 respectively connected to the drive control module are connected to one or more of the one or more disconnecting elements 40 of the one or more light-emitting elements 20. The X-ray element 20 is an organic light-emitting diode, and each of the light-emitting elements 2 can be equivalently regarded as an ideal light-emitting diode 21 and a parasitic capacitor 23, and the r κ 〇 驱动 drive control is 莫 amp The input - driving power i the light-emitting element 0, the timing point 'the light-emitting element 2 〇 the ideal light-emitting diode" produces light output. § This embodiment includes a plurality of the light-emitting elements 2 When the composition of the device is composed of 'the drive control module, the time and period of each of the light-emitting elements are controlled, and a plurality of the light-emitting elements are displayed in a picture or animation. In order to drive each of the light-emitting elements 2Q The reaction speed and the reaction time are improved in accuracy, and at the same time, the energy consumption problem caused by the parasitic capacitance 23 must be fully charged before driving the light-emitting element 2Q. In this embodiment, each of the light-emitting elements 20 and the common electrode c〇 Between the M, the disconnecting element is connected in series, wherein the form and type of the breaking element 40 are not limited, and may be a transistor element, a transistor switching circuit or an electronically controllable switching element. Controlled by the drive control module 10 The disconnecting element 4 is turned off (on the "off duty" state of the corresponding light-emitting element 2, so that the driving control module 10 to the common electrode c (10) form a conductive loop, the light-emitting element 20遂 can generate light output. When the light-emitting element 2 is turned to the off state state, the drive control group I 10 is directly disconnected (〇_), because the circuit between the drive control module 10 and the common electrode C0M is disconnected. The parasitic capacitance 23 is in a floating state. The stored charge is hardly or only slowly released. Therefore, the parasitic capacitance 23 can be turned on for a short period of time in the next period of the light-emitting element 2Q. After the charging is completed, the 6 M395253 power saving can simultaneously make the reaction speed of the light-emitting element 20 fast and accurate. As can be seen from the foregoing description, in the present embodiment, the light-emitting element 2 is turned on and off, and the parasitic capacitance 23 is hardly repeated. Charging and discharging not only reduces power consumption, but also improves the response speed of the light-emitting element. Moreover, it is no longer necessary to configure the pre-charging circuit of the prior art, and it is also necessary to eliminate the pre-charge of the light-emitting element. Electrical (light-emitting member Wu 2〇 provide a high instantaneous voltage or current), so that the lifetime of the light emitting element 20 of growth. Λ

圖式簡單說明】 第一圖為本創作之較估杂 乂平又性只施例電路示音 狀態圖 第一 Α〜C圖為既有之有機發光二 圖 極體顯示器之工作 第二圖為既有之點陆 體顯示器之驅 動 2陣式有機發光二極 示意圖。 點陣式有機發光 第四圖為既有之 電波形示意圖。 二極體顯示器之預充 【主要元件符號說明】 1 0驅動控制模組 2 0發光元件 21理想發光二極體 23寄生電容 40斷開元件 91關閉狀態像素 7 M395253 92開啟狀態像素 C1電容 ◦ LED發光元件 C Ο Μ共電極 SS1〜SS4顯示電訊號 S 1預充電開關 S2放電開關 S 3驅動開關 Fc預充電路徑 F ο η驅動路徑 F d放電路徑The simple illustration of the figure] The first picture is the comparison of the creation of the creation and the only example of the circuit sound state diagram. The first picture is the work of the existing organic light-emitting diode picture display. The second picture is A two-layer organic light-emitting diode diagram of a land-based display. Dot Matrix Organic Illumination The fourth figure is a schematic diagram of the existing electrical waveform. Pre-charging of the diode display [Main component symbol description] 1 0 drive control module 20 0 light-emitting element 21 ideal light-emitting diode 23 parasitic capacitance 40 disconnect element 91 off state pixel 7 M395253 92 open state pixel C1 capacitor ◦ LED Light-emitting element C Ο Μ common electrode SS1 ~ SS4 display electrical signal S 1 pre-charge switch S2 discharge switch S 3 drive switch Fc pre-charge path F ο η drive path F d discharge path

Claims (1)

M395253 六、申請專利範圍· 1. 一種具有斷開省電功能的有機發光二極體顯示器, 其包含一驅動控制模組、分別與該驅動控制模組連接之一 個以上的發光元件,以及一對一連接於該—個以上的發光 7G件之一個以上的斷開元件,每個該斷開元件連接於對應 之該發光元件與一共電極之間,其中: 該驅動控制模組驅動任意的該發光元件開啟時,同時 控制所對應之該斷開元件為關閉(sh0「t)狀態;及 該驅動控制模組使該發光元件關閉時,同時控制所對 應之該斷開元件為斷開(open)狀態。 2. 如申睛專利範圍第1項所述之具有斷開省電功能的 有機發光二極體顯示器’其中’該斷開元件為—電晶體元 件、一電晶體開關電路或一可電子控制之開關元件。 七、圖式:(如次頁)M395253 VI. Patent Application Range 1. An organic light emitting diode display with a power-saving function, comprising a driving control module, one or more light-emitting elements respectively connected to the driving control module, and a pair One or more disconnecting elements connected to the one or more light-emitting 7G members, each of the disconnecting elements being connected between the corresponding light-emitting elements and a common electrode, wherein: the driving control module drives any of the light-emitting elements When the component is turned on, the corresponding disconnecting component is simultaneously turned off (sh0 "t" state; and when the driving control module turns off the light emitting component, the corresponding disconnecting component is simultaneously controlled to be open (open) 2. An organic light-emitting diode display having a power-saving function as described in claim 1 of the scope of the patent application, wherein the disconnecting element is a transistor element, a transistor switching circuit or an electron-possible device Control switching element. VII. Schema: (such as the next page)
TW99216416U 2010-08-26 2010-08-26 Has disconnect power-saving function organic display TWM395253U (en)

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