1286445 95-6-13 17944twfl.doc/006 九、發明說明： 【發明領域】 本發月係關於一種對比度自動調整的有機發光二極體面板及顯示 器，特別是一種將有機光偵測器與有機發光二極體設置於同一基板的對 比度自動調整有機發光二極體面板及顯示器。 【習知技術】 在光電產業中，隨著電子產品日趨輕薄短小，平面顯示器成為目前 熱門的商品之一。 近年來應用於平面顯示器的技術主要有下列幾種：電漿顯示器 (Plasma Display)、液晶顯示器（Liquid Crystal Display)、無機電 致發光顯示器（Electroluminescent Display)、有機發光二極體 (Organic Light Emitting Diode)、真空螢光顯示器（Vacuum Fluorescent Display)、％致發射顯示器（Field Emission Display) 以及電變色顯示器（Electro-chromic Display)等。其中，有機發光 二極體以其自發光、廣視角、低耗電、製程容易、成本低、操作溫度範 圍寬以及高應答速度等優點，使其成為平面顯示器中技術的主流。 然而，對於有機發光二極體顯示器而言，由於自發光的特性，使其 在較強的外界光源環境下操作時，對比度會比一般反射式顯示器差。亦 即，當外界光強度大於顯示器的亮度時，使用者不容易清楚辨識顯示器 上的文字或圖案；相反地，當外界光強度小於顯示器的亮度時，顯示器 容易讓使用者產生刺眼的感覺。因此，如何隨著外界光源強度的變化而 自動調整顯示器的亮度，為目前有機發光二極體顯示器最重要、最需要 突破的課題之一。 在習知技術中，液晶顯示器已使用一外加液晶偵測器來測量外界光 源，利用回授的訊號來控制顯示像素的驅動電壓，進而達到調整顯示器 亮度的目的，如美國專利1^5，153,756。然而，目前尚無自動調整對比 度的技術應用於有機發光二極體顯示器中。 【發明概要】 承上所述，本發明之目的係提供一種成本低、製程簡單以及將有機 光偵測器與有機發光二極體設置於同一基板的對比度自動調整有機發 1286445 95-6-13 17944twfl.doc/006 光二極體面板及顯示器。 為達上述目的，本發明提供一種對比度自動調整有機菸央-炻驊顧 =器，包含一透明基板、一光偵測單元、一電流偵測單元、一有機發1 光 單元、一驅動單元以及一控制單元。其中光偵測單元係形成於透明^板 上’用以偵測外界之光源強度，並依據光源強度產生一電流強产·電流 巧測單元係電連接於光偵測單元，用以偵測電流強度；有機發^單元& 2亨於透明基板上，用以產生一光源；驅動單元係分別電連接於光偵測 悬子，有機發光單元，用以分別驅動光偵測單元與有機發光單元；“制 予元係電連接於電流偵測單元，並依據電流偵測單元所偵測 來控制驅動單元。再者，本發明亦提供一種對比度自動調整有機 二 極體顯，包含一透明基板、一光偵測單元、一第一驅動單元、一 偵測，，、一有機發光單元、一第二驅動單元以及一控制單元。苴 ^巧測單元係形成於透明基板上，用以偵測外界之光源強度，並依^ 生一電流強度；第一驅動單元係驅動光偵測單元；電流债ί單 ^於侧單元，用以_電流強度；有機發光單元係形成於 ίΐ基以產生一光源；第二驅動單元係驅動有機發光單元；控 ί流偵，元，並依據電流偵測單元所偵測的電流強 面板，包含一透明基板、一光偵測單元以及一有機發光單 係形成於透明基板上，用以偵測外界之光源強度， 產生—電流強度；有機發光單元係形成於透明基板上， ^發，係提供-種對比度自動調整有機發光二極 外界光源強度來調整自身的發光強度，以達 -=n ^度二=明將有機發光二極體與有機光侧單元設置於同 要炎·二板# 令本以及裝置的體積，符合電子產品輕薄短小的 ί求亦益^二極體當作光_單元，使整個製程步驟簡 化亦無而再另加一個兀件，進而降低製造成本。 【較佳實施例之詳細說明】 敕右圖式，說明依據本發明實施例之一種對比度自動調 ^示，7b-極體面板及顯不||。其中相_元件將以相同的參照符號 1286445 17944twfl.doc/006 Λ 95-6-13 $所有的顯示器中，全亮與全暗的亮度比是決定其識別度好壞的重 f因f之一’此比值稱之為對比度（c〇ntrast)，其定義如下列的方 式所示：1286445 95-6-13 17944twfl.doc/006 IX. Invention Description: [Invention Field] This issue is about an organic light-emitting diode panel and display with automatic contrast adjustment, especially an organic photodetector and organic The contrast of the light-emitting diodes disposed on the same substrate automatically adjusts the organic light-emitting diode panel and the display. [Inventional Technology] In the optoelectronic industry, as electronic products become lighter and thinner, flat panel displays have become one of the hottest products. In recent years, there have been mainly the following technologies applied to flat panel displays: plasma display, liquid crystal display, electroluminescent display, and organic light emitting diode (Organic Light Emitting Diode). ), Vacuum Fluorescent Display, Field Emission Display, and Electro-chromic Display. Among them, the organic light-emitting diode has become the mainstream of the technology in the flat panel display because of its self-illumination, wide viewing angle, low power consumption, easy process, low cost, wide operating temperature range and high response speed. However, for an organic light-emitting diode display, the contrast is inferior to that of a general reflective display due to its self-illuminating characteristics when it is operated under a strong external light source environment. That is, when the external light intensity is greater than the brightness of the display, the user does not easily recognize the text or the pattern on the display; conversely, when the external light intensity is less than the brightness of the display, the display is liable to cause a glare to the user. Therefore, how to automatically adjust the brightness of the display as the intensity of the external light source changes is one of the most important and most important issues for the current organic light-emitting diode display. In the prior art, the liquid crystal display has used an external liquid crystal detector to measure the external light source, and uses the feedback signal to control the driving voltage of the display pixel, thereby achieving the purpose of adjusting the brightness of the display, such as US Patent 1 5,153,756. . However, there is currently no technology for automatically adjusting contrast in organic light-emitting diode displays. SUMMARY OF THE INVENTION In view of the above, the object of the present invention is to provide a low-cost, simple process and contrast-adjusted organic adjustment of an organic photodetector and an organic light-emitting diode on the same substrate. 1286445 95-6-13 17944twfl.doc/006 Light diode panel and display. In order to achieve the above object, the present invention provides a contrast-adjusting organic smoke control device, including a transparent substrate, a light detecting unit, a current detecting unit, an organic light emitting unit, and a driving unit. A control unit. The light detecting unit is formed on the transparent board to detect the intensity of the external light source, and generates a current according to the intensity of the light source. The current measuring unit is electrically connected to the light detecting unit for detecting the current. The organic light emitting unit is mounted on the transparent substrate to generate a light source; the driving unit is electrically connected to the light detecting suspension, and the organic light emitting unit is configured to respectively drive the light detecting unit and the organic light emitting unit. The system is electrically connected to the current detecting unit and controls the driving unit according to the detection by the current detecting unit. Furthermore, the present invention also provides an automatic adjustment of the contrast of the organic diode, including a transparent substrate, a light detecting unit, a first driving unit, a detecting, an organic light emitting unit, a second driving unit and a control unit. The measuring unit is formed on the transparent substrate for detecting the outside The intensity of the light source is based on a current intensity; the first driving unit drives the light detecting unit; the current debt is applied to the side unit for _ current intensity; and the organic light emitting unit is formed at ΐ To generate a light source; the second driving unit drives the organic light emitting unit; and controls the current detecting unit, and comprises a transparent substrate, a light detecting unit and an organic light emitting layer according to the current detecting panel detected by the current detecting unit. The single system is formed on the transparent substrate to detect the intensity of the external light source, and the current intensity is generated; the organic light emitting unit is formed on the transparent substrate, and the brightness is automatically adjusted to adjust the intensity of the organic light emitting diode external light source. Adjust the luminous intensity of the light to reach -=n ^ degrees 2 = the organic light-emitting diode and the organic light-side unit are set in the same area and the size of the device, and the size of the device is in line with the light and short electronic products. Seeking also benefiting the diode as a light_unit, so that the entire process step is simplified and no additional one is added, thereby reducing the manufacturing cost. [Detailed Description of the Preferred Embodiment] 敕 Right figure, illustrating the basis A contrast auto-tuning of the embodiment of the invention, 7b-polar panel and display||. wherein the phase_element will have the same reference symbol 1286445 17944twfl.doc/006 Λ 95-6-13 $ all display In the device, the ratio of the brightness of the full bright to the full dark is the one of the weight f due to the degree of recognition. The ratio is called contrast (c〇ntrast), and its definition is as follows:
Lsub, on + Ramb Lsub, off + Ramb 一其中，Lsuhn為像素（piXel)被點亮時的亮度，為未被點亮的 壳度，而Raxnb為外界光進入顯示器内被反射出的亮度。 ^上述的方程式可得知，當外界光源強度越強時，對比度越小，即 =別度越差：此時若能適當提昇顯示器的亮度，即可維持適當的對比 ^二反之二变外界光源強度甚弱時，則對比度急遽增加，此時若能適當 的減員示器的亮度，則可降低功率的消耗以及減輕刺眼的問題。本發 :月利用此一特點來提供一對比度自動調整有機發光二極體面板及 顯7Κ緊。 土抑-於一有機發光二極體面板及顯示器而言，其係具有陣列排列之發 ，早兀，而於本發明之實施例中為方便說明，以下將以一發光單元代替 整個有機發光二極體面板及顯示器之發光單元。 圖1所不，本發明之一較佳實施例的對比度自動調整有機發光二 巧體顯:器1，包含一透明基板U、一光偵測單元12、一電流偵測單元 13、一有機發光單元14、一驅動單元15以及一控制單元16。 + L其/ 明基板11可為一玻璃基板、一塑膠基板以及一柔性基板。 在2膠基板與柔性基板可為一聚碳酸酯（p〇lycarb〇nate，pc)基板、 一聚酯（p〇lyeSter，PET)基板、一環烯共聚物（cyclic 〇lefin ^opo^ymer COC)基板或一金屬鉻合物基材一環烯共聚物（metal丨⑽此一 based cyclic olefin copolymer，mCOC)基板。 、、㈣^來廿mtlL2係形成於透明基板11上，用以债測外界之光 /雪'古二光Ϊ強度產生—電流強度，且所得的光源強度與 ίΐϊίΐίΐΐ亦即，S光積測單元12所惰測之光源強度較小時， ^ ϊ ί ^小；當光摘測單元12所摘測之光源強度較大時，所 1286445 17944twfl.doc/006 95-6-13 境23之 ku 1 3 絲極12 «It極 ¥ 屬ί- t 4屬 Γ-如 偵2J.21 七2 1 j光Μ f激I Λ2機奶 元有係 單一 2 J > 2 須211 偵12層 光極光 ，電發 中明敗。 例透t'示 施一機所 實由免1 木係，圖 於元成如 單構， 測所間 ΐ般^有機發光二極體裝置中，有機電激發光層122通常包含電 $以層、發光層以及電子傳導層。有機電激發光層122 方式’將電能轉換為光能，以達到發光顯示的目的。然 以昭ΐ將激發光層122反接，亦即將陽極與陰極對調，並同時加 人、、、先，即可將光能轉換能為電能，可達到光偵測之用。 ^ 電極121係為一透明陰極，其材料可為氧化銦錫（ιτο) 金屬電極123為—金屬陽極，係以蒸鍍法或是濺 於有機電激發光層122上，其材質可為鋁、鋁/鋰、鈣、鎂銀 a i或疋銀。 、 1Q 下來，電流偵測單元電連接於光偵測單元，電流偵測單元 13係偵測依據光偵測單元12所得光源強度而產生的電流強度。、 一，，參考圖1 ’透明基板11上亦設置有機發光單元，有機發 用以產生一光源，由一透明電極141、一有機電激發光層142以 會屬電極143所構成，有機電激發光層142係設置於透明電極141 ^今屬電極143之間。在此，透明電極141係為一透明陽極，其材料 念氧化銦錫（ITO)或是氧化鋁鋅（AZO);有機電激發光層142、係包含 入層、電洞傳導層、發光層以及電子傳導層；金屬電極143為一 ^屬極，係以蒸鍍法或是濺鍍法形成於有機電激發光層142上，盆 貝可為銘、崔呂/鐘、約、鎮銀合金或是銀。 ’、 j外，驅動單元15係分別電連接於光偵測單元12與有機發光單 本ΐ施例中，該驅動單元15係包含一第一驅動部與一第二驅動部。 中，第一驅動部係驅動光偵測單元12，用以偵測外界的光源強产· 二驅動部係驅動有機發光單元14，進而產生一光源。在此，驅動^元昂 15可為一主動式驅動單元。由於有機光偵測器係以電流驅動，所以 用一開關薄膜電晶體（SwitchTFT)作為影像資料進入儲存之開關即 ，之用，以及一驅動薄膜電晶體（DriveTFT)根據儲存電容上之訊於雷 壓值，調制驅動光偵測單元之連續電流。當然，驅動單元15 ^一电 被動式驅動單元替代。 人 1286445 95-6-13 17944twfl.doc/006 於本實施例中，由於光可穿透透明基板11，所以由有機發光單元14 所產生的光係可穿透透明基板11至外界；而光偵測單元12係接收來自 外界光以進行偵測。 再來，控制單元16係電連接於電流偵測單元13，並依據電流偵測 單兀13所偵測的電流強度來控制驅動單元15之第二驅動部。 、 於本實施例中，外界光源經由光偵測單元12偵測其光源強度，經由 轉換而形成電流強度。依據電流偵測單元13偵測到的電流強度再藉由 控制子元16來控制驅動單元15。接著，驅動單元15再依控制單元曰16 的指不驅動有機發光單元14。依照此原理，有機發光二極體顯示器可以 Ρίί外爹的光源強度來調控自身發光強度，以達到適當的對比度°。也就 是說外界光源強度較大時，有機發光二極體顯示器增加其發光強 度；而當外界光源強度較小時，有機發光二極體顯示器減少其^务光強度。 所示係為本發明之另一較佳實施例之說明圖，於此實施例中， ，動^兀15係由一第一驅動單元π以及一第二驅動單元18所代替。 今此μ施例中，該第一驅動單元π係驅動光偵測單元12，偵測外界的 ，源強度；第二驅動單元18係驅動有機發光單元14，進而產一光 S亦SiS以ϋ及第二驅料元18可融動式軸單元， &-以了气說明本發明之對比度自動調整有機發光二極體面板2，如圖3 f =，本發明之對比度自動調整有機發光二極體面板2係包含一透明美 ff1、二光债測單元22以及一有機發光單元23。其中光偵測單H土 巧機光偵測單元，本實施例中之元件與對比度自動調整有機發光 一極體顯不器1之相同元件，其特徵及功能皆相同，在此不再贅述。 t發明提供之對比度自動調整有機發光二極體面板及 ^元侧外界的光職度，使有機發光二極ί&ϊίΐϊ可 33^源強度的變化而調整面板的亮度，以使對比度可維持在二定 基板上，而不需外加於有機發光二極體之^可Si 積以及增加製造上方便度。再者，利用有機發光二極體作為 測早7C，更可簡化製程、降低製程成本。 娜作為 邊，舉命if ’而非為限制性者。任何未脫離本發明之精神與範 可t、進行之等效修改或變更，均應包含於後附之申請專利範圍^。 1286445 95-6-13 17944twfl.doc/006 圈式之簡單說明 【圖式之簡單說明】 圖1係本發明實施例之對比度自動調整有機發光二極體顯示器的方 塊示意圖。 圖2係本發明另一較佳實施例之對比度自動調整有機發光二極體顯 示器的方塊示意圖。 圖3係本發明一較佳實施例之對比度自動調整有機發光二極體面板 的方塊示意圖。 【圖式符號說明】 1對比度自動調整有機發光二極體顯示器 11透明基板 12光偵測單元 121透明電極 122有機電激發光層 123金屬電極 13電流偵測單元 14有機發光單元 141透明電極 142有機電激發光層 143金屬電極 15驅動單元 16控制單元 17第一驅動單元 18第二驅動單元 2對比度自動調整有機發光二極體面板 21透明基板 22光偵測單元 23有機發光單元Lsub, on + Ramb Lsub, off + Ramb One of them, Lsuhn is the brightness when the pixel (piXel) is lit, and is the unlit case, and Raxnb is the brightness of the external light that is reflected into the display. ^The above equation can be known that when the intensity of the external light source is stronger, the contrast is smaller, that is, the worse the degree is: the appropriate brightness can be improved at this time, and the appropriate contrast can be maintained. When the intensity is weak, the contrast is sharply increased. At this time, if the brightness of the indicator is appropriately reduced, the power consumption and the problem of glare can be reduced. This issue: This feature is used to provide a contrast-adjusted auto-adjustable OLED panel and a 7-clamp. In the case of an organic light-emitting diode panel and a display, the array has an arrangement of arrays, which is early, and in the embodiment of the present invention, for convenience of explanation, the following organic light-emitting unit will be replaced by a light-emitting unit. The light unit of the polar body panel and the display. 1 is a preferred embodiment of the present invention, the contrast auto-adjusting organic light-emitting diode display device 1 includes a transparent substrate U, a light detecting unit 12, a current detecting unit 13, and an organic light emitting device. The unit 14, a driving unit 15 and a control unit 16. + L / / substrate 11 can be a glass substrate, a plastic substrate and a flexible substrate. The two-ply substrate and the flexible substrate may be a polycarbonate (p〇lycarb®, pc) substrate, a polyester (p〇lyeSter, PET) substrate, or a cyclic olefin copolymer (cyclic finlefin ^opo^ymer COC) A substrate or a metal chromite substrate-metal olefin copolymer (metal 丨 (10) such a cyclic olefin copolymer, mCOC) substrate. , (4) ^来廿mtlL2 is formed on the transparent substrate 11 for debt measurement of the external light/snow 'ancient light intensity|current intensity, and the obtained light source intensity and ίΐϊίΐίΐΐ, ie, S-light unit When the intensity of the 12 idler light sources is small, ^ ϊ ί ^ is small; when the intensity of the light source measured by the light extraction unit 12 is large, 1286445 17944twfl.doc/006 95-6-13 3 极极12 «It极¥ belongs to ί- t 4 Γ 如 - 如 2 2J.21 七 2 1 j Μ f I I Λ 2 machine milk unit has a single 2 J > The hair was lost in the hair. For example, in the case of t's display, the machine is free of 1 wood, and the figure is in the form of a monolithic structure. In the organic light-emitting diode device, the organic electroluminescent layer 122 usually contains electricity. , an illuminating layer and an electron conducting layer. The organic electroluminescent layer 122 mode converts electrical energy into light energy for the purpose of illuminating display. However, in Zhaohao, the excitation layer 122 is reversely connected, that is, the anode and the cathode are reversed, and at the same time, the light energy can be converted into electric energy, which can be used for light detection. The electrode 121 is a transparent cathode, and the material thereof may be indium tin oxide (ITO). The metal electrode 123 is a metal anode, which is vapor deposited or splashed on the organic electroluminescent layer 122, and the material thereof may be aluminum. Aluminum/lithium, calcium, magnesium silver ai or silver. After 1Q, the current detecting unit is electrically connected to the light detecting unit, and the current detecting unit 13 detects the current intensity generated according to the intensity of the light source obtained by the light detecting unit 12. Referring to FIG. 1 'the transparent substrate 11 is also provided with an organic light emitting unit, and the organic light is used to generate a light source. The transparent electrode 141 and the organic electroluminescent layer 142 are formed by the electrode 143. The light layer 142 is disposed between the transparent electrode 141 and the current electrode 143. Here, the transparent electrode 141 is a transparent anode, and its material is indium tin oxide (ITO) or aluminum zinc oxide (AZO); the organic electroluminescent layer 142 is included in the layer, the hole conducting layer, the emitting layer, and The electron conducting layer; the metal electrode 143 is a galvanic electrode formed on the organic electroluminescent layer 142 by evaporation or sputtering, and the basin can be Ming, Cui Lu / Zhong, about, Zhenyin alloy or It is silver. In addition, the driving unit 15 is electrically connected to the photo detecting unit 12 and the organic light emitting unit, respectively. The driving unit 15 includes a first driving portion and a second driving portion. The first driving unit drives the light detecting unit 12 to detect the external light source and the second driving unit drives the organic light emitting unit 14 to generate a light source. Here, the drive unit 15 can be an active drive unit. Since the organic photodetector is driven by current, a switch thin film transistor (SwitchTFT) is used as a video material to enter the storage switch, and a driving thin film transistor (DriveTFT) is used according to the storage capacitor. The voltage value modulates the continuous current that drives the photodetecting unit. Of course, the drive unit 15 ^ is replaced by an electrically driven drive unit. In the present embodiment, since the light can penetrate the transparent substrate 11, the light generated by the organic light-emitting unit 14 can penetrate the transparent substrate 11 to the outside; The measuring unit 12 receives the light from the outside for detection. Then, the control unit 16 is electrically connected to the current detecting unit 13, and controls the second driving portion of the driving unit 15 according to the current intensity detected by the current detecting unit 13. In this embodiment, the external light source detects the intensity of the light source via the light detecting unit 12, and forms a current intensity through the conversion. The driving unit 15 is controlled by the control sub-unit 16 based on the current intensity detected by the current detecting unit 13. Next, the driving unit 15 does not drive the organic light emitting unit 14 according to the finger of the control unit 曰16. According to this principle, the organic light-emitting diode display can adjust the intensity of the light to adjust the intensity of the light to achieve an appropriate contrast. That is to say, when the intensity of the external light source is large, the organic light emitting diode display increases its luminous intensity; and when the intensity of the external light source is small, the organic light emitting diode display reduces its light intensity. The figure is an explanatory view of another preferred embodiment of the present invention. In this embodiment, the driving unit 15 is replaced by a first driving unit π and a second driving unit 18. In the present embodiment, the first driving unit π drives the light detecting unit 12 to detect the source intensity of the outside; the second driving unit 18 drives the organic light emitting unit 14 to generate a light S and a SiS. And the second driving element 18 can be melted shaft unit, &- the gas is used to illustrate the contrast of the invention automatically adjusts the organic light emitting diode panel 2, as shown in Fig. 3 f =, the contrast of the invention automatically adjusts the organic light emitting two The polar body panel 2 includes a transparent ff1, a two-light debt measuring unit 22, and an organic light emitting unit 23. The light detecting unit H organic light detecting unit, the components in the embodiment and the contrast automatically adjust the same components of the organic light emitting body display device 1, the features and functions are the same, and will not be described herein. The contrast provided by the invention automatically adjusts the illuminance of the OLED panel and the external side of the ^ element side, so that the brightness of the panel can be adjusted by the change of the intensity of the organic light-emitting diode, so that the contrast can be maintained. On the second substrate, it is not necessary to add to the organic light-emitting diode and increase the manufacturing convenience. Furthermore, the use of organic light-emitting diodes as the early 7C can simplify the process and reduce the process cost. As a side, Na is a fate if not a restrictive one. Any equivalent modifications or alterations made without departing from the spirit and scope of the invention are intended to be included in the scope of the appended claims. 1286445 95-6-13 17944twfl.doc/006 Brief Description of the Loop Pattern [Brief Description of the Drawings] Fig. 1 is a block diagram showing the contrast automatic adjustment of the organic light emitting diode display according to the embodiment of the present invention. 2 is a block diagram showing a contrast-adjusted organic light-emitting diode display according to another preferred embodiment of the present invention. 3 is a block diagram showing a contrast-adjusted organic light-emitting diode panel in accordance with a preferred embodiment of the present invention. [Description of Symbols] 1 Contrast Automatic Adjustment of Organic Light Emitting Diode Display 11 Transparent Substrate 12 Light Detection Unit 121 Transparent Electrode 122 Organic Electrical Excitation Layer 123 Metal Electrode 13 Current Detection Unit 14 Organic Light Emitting Unit 141 Transparent Electrode 142 Electromechanical excitation layer 143 Metal electrode 15 Driving unit 16 Control unit 17 First driving unit 18 Second driving unit 2 Contrast automatic adjustment Organic light emitting diode panel 21 Transparent substrate 22 Light detecting unit 23 Organic light emitting unit