1313145 :、⑴ ' 發明所屬之技術領域： 豆^本發明係關於—種有機發光顯示面板之畫素結構，尤 八疋一種減少侧向漏光，以改善顯示效率之畫素結構。 先前技術： 有機發光顯示器（Organic Electroluminescence ^Play’ OLED’ 〇rganic EL Display)又稱有機發光二 體（Organic Light Emitting Diode, OLED)顯示器， 由於具有高亮度、螢幕反應速度快、輕薄短小、全彩、無 視角差與低耗電量之特性，因此可取代傳統液晶顯示器， 而成為新一代攜帶型資訊產品、行動電話、個人數位處理 器以及攜帶型電腦普遍使用的顯示裝置。 有機發光顯示器與液晶顯示器最大之不同點，在於有 機發光顯示器利用自發光之有機發光層，作為顯示照明之 來源。請參照第一圖，顯示一習知有機發光二極體1，包 括一陽極電極板10、一發光層20與一陰極電極板3〇。其 中，發光層2 0係夾於二電極板1 0與3 0之間，形成一三明治 (sandw i ch )結構。在正向電壓驅動下，陽極電極板丨〇向 發光層20注入電洞（hole)，陰極電極板3〇向發光層2〇注 入電子（e 1 ectron )。注入之電洞和電子在發光層2〇中相 遇結合，使電子由激發態（e X c i t e d s t a t e )降回基態 (base state) ’並將多餘能量以光波之形式輻射1313145 :, (1) 'Technical field to which the invention belongs: Bean ^ The present invention relates to a pixel structure of an organic light-emitting display panel, in particular, a pixel structure for reducing lateral light leakage to improve display efficiency. Prior Art: Organic Electroluminescence (Playing OLED' 〇rganic EL Display), also known as Organic Light Emitting Diode (OLED) display, due to high brightness, fast screen response, light and short, full color With no viewing angle difference and low power consumption, it can replace the traditional liquid crystal display, and become a display device commonly used in the new generation of portable information products, mobile phones, personal digital processors and portable computers. The biggest difference between an organic light emitting display and a liquid crystal display is that the organic light emitting display utilizes a self-illuminating organic light emitting layer as a source of display illumination. Referring to the first figure, a conventional organic light-emitting diode 1 is shown, which comprises an anode electrode plate 10, a light-emitting layer 20 and a cathode electrode plate 3. The light-emitting layer 20 is sandwiched between the two electrode plates 10 and 30 to form a sandwich (sandw i ch ) structure. Driven by the forward voltage, the anode electrode plate 注入 implants a hole into the light-emitting layer 20, and the cathode electrode plate 3 〇 injects electrons (e 1 ectron ) into the light-emitting layer 2 . The injected holes and electrons are combined in the light-emitting layer 2, causing the electrons to fall back from the excited state (e X c i t e d s t a t e ) to the base state and radiate excess energy in the form of light waves.
第5頁 1313145 五、發明說明（2) (radiation)釋出。 請參照第二A與B圖’顯示一典型（主動式）有機發光顯 示之晝素結構40，第二A圖係此畫素結構40之俯視圖，而 第二B圖係對應於第二A圖中a - a剖面線之截面圖。此晝素 結構40包括一玻璃基材100、一下電極120、一護層13〇、 一有機發光層140與一上電極150。玻璃基材1〇〇之上表面 依序製作有一薄膜電晶體20 0與一覆蓋此薄膜電晶體2〇〇之 阻障層11 0。下電極1 2 0係製作於此阻障層11 〇上，並連接 至溥膜電晶體200。護層130係製作於玻璃基材1〇〇上，覆 蓋上述薄膜電晶體200與下電極120，並且具有一開口132 以暴露部份下電極1 2 0 ’藉以定義此晝素結構4 〇中發光區 之位置。有機發光層140係製作於下電極12〇之上表面，延 伸至護層130上’而上電極150係製作於此有機發光層ho 之上表面。 當一驅動電流流經上述有機發光層丨4〇，如第二B圖所 示’此有機發光層中，輻射發光之方向並不僅侷限於往玻 璃基材100之方向發光或是往上電極15〇 往四面八方散射。因此，往側方向散射之光：發：無= 用於顯不，而導致此有機發光顯示器之能量浪費。 除此之外，明參照第二圖，為了達到全彩顯示之目 的’在有機發光顯示面板上，紅綠藍三色晝素結構 40a，40b，4 0c係彼此相鄰，並且，藉由調整三色真产之比 :機二之顯示顏色。然而’由於晝一素結構:"， 有機發光層140在側方向散射之光線未受阻礙，直接進入Page 5 1313145 V. Description of invention (2) Release of (radiation). Please refer to the second A and B diagrams' to display a typical (active) organic light emitting display pixel structure 40, the second A picture is a top view of the pixel structure 40, and the second B picture corresponds to the second A picture. A section of the a-a section line. The halogen structure 40 includes a glass substrate 100, a lower electrode 120, a cover 13A, an organic light-emitting layer 140 and an upper electrode 150. On the upper surface of the glass substrate, a thin film transistor 20 and a barrier layer 110 covering the thin film transistor 2 are sequentially formed. The lower electrode 120 is formed on the barrier layer 11 and is connected to the enamel transistor 200. The protective layer 130 is formed on the glass substrate 1 ,, covers the thin film transistor 200 and the lower electrode 120, and has an opening 132 to expose a portion of the lower electrode 1 2 0 ' to define the luminescence in the 昼 structure 4 The location of the district. The organic light-emitting layer 140 is formed on the upper surface of the lower electrode 12A and extends over the protective layer 130, and the upper electrode 150 is formed on the upper surface of the organic light-emitting layer ho. When a driving current flows through the organic light emitting layer 〇4〇, as shown in FIG. 2B, the direction of the radiant light is not limited to the light emitting toward the glass substrate 100 or the upper electrode 15 It scatters in all directions. Therefore, the light scattered in the lateral direction: hair: no = for display, resulting in waste of energy of the organic light-emitting display. In addition, referring to the second figure, in order to achieve the full color display 'on the organic light emitting display panel, the red, green and blue trichromatic element structures 40a, 40b, 40c are adjacent to each other, and by adjusting The ratio of three colors to the real product: the display color of the machine two. However, due to the structure of the monolayer: ", the light scattered by the organic light-emitting layer 140 in the lateral direction is not hindered, and directly enters
第6頁 五、發明說明（3) 同顏色之晝素結構4〇 ’而影響相鄰紅綠藍三色畫素 _ &a，4〇b’ 4〇c，其發光亮度之比例關係，而造成顯示 色彩偏離預期，導致晝面之失真與誤差。 有，於此，本發明提出一種防止有機發光層丨側向 故莫t，素結構4〇，—則可以提高顯示之效率，一則可以 °述側向漏光對有機發光顯示器全彩顯示之影響。 發明内容： 中，ί ίIί目的係提供一種晝素結構’以提高晝素結構 有機發光二極體之顯示效率。 互+ϋ:之另一目的’係避免相鄰有機發光二極體間相 立干擾所導致顯示色彩之失真與誤差。 屏鱼本r:之有機發光顯不面板晝素結構，至少包括-護 二2-反射壁。護層係製作於一基材±，具有一開口以容 側ί機發=極體，而反射壁係、製作並環繞於上述開口之 上’以減 >'有機發光二極體之側向漏光。 所附之優點與精神可以藉由以下的發明詳述及 吓附圖式付到進—步的暸解。 實施方式： 請參照第四Α與Β圖 構m a 〇 月有機發光顯示晝素舞 籌之第…例1四A圖係此晝素結構之俯視圖，而第Page 6 V. Description of invention (3) The structure of the same color has 4〇' and affects the adjacent red, green and blue trichromatic pixels _ &a, 4〇b' 4〇c, the ratio of the brightness of the light, The display color deviates from the expected result, resulting in distortion and error of the face. Therefore, the present invention proposes to prevent the organic light-emitting layer from being laterally oriented, and the prime structure is 4〇, thereby improving the efficiency of display, and the effect of lateral light leakage on the full-color display of the organic light-emitting display. SUMMARY OF THE INVENTION: The purpose of the invention is to provide a halogen structure </ RTI> to improve the display efficiency of the fluorene structure organic light-emitting diode. Mutual + ϋ: Another purpose is to avoid distortion and error in display color caused by the interference between adjacent organic light-emitting diodes. The screen fish is r: the organic light-emitting panel is not a panel structure, and at least includes - 2 - 2 reflection walls. The protective layer is formed on a substrate ± having an opening to accommodate the side of the body, and the reflective wall is formed and surrounded by the opening to reduce the lateral direction of the organic light emitting diode Light leaks. The advantages and spirits attached can be learned by the following detailed description of the invention and the scary drawing. Implementation: Please refer to the fourth Α and Β m a 〇 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
1313145 五、發明說明（4) 四B圖係對應於第四A圖中b - b剖面線之戴面圖。此晝素結 構包括一玻璃基材300、一透明下電極320、一護層330、 一反射壁361、一有機發光層340與一金屬上電極350。玻 璃基材300之上表面依序製作有一薄膜電晶體4〇〇與一覆蓋 此薄膜電晶體4 0 0之阻障層3 1 0。透明下電極3 2 〇係製作此 阻障層31 0上，並連接至薄膜電晶體4 〇 〇。護層3 3 0係製作 於此玻璃基材300上，覆蓋上述薄膜電晶體4〇〇與部分下電 極320，並且具有一開口 332以暴露部份下電極320，藉以 定義此晝素結構中發光二極體之位置。反射壁3 6 1係製作 於此護層開口 3 3 2之側壁表面，而有機發光層3 4 〇係製作於 下電極320、反射壁361與護層330之上表面，同時，金屬 上電極350係製作於此有機發光層34〇之上表面。藉此，有 機發光層340之發光’經由上述反射壁36ι與金屬上電極 3 5 0之反射與集中，可以確保光線往下方玻璃基材3〇〇之方 向發散，同時避免產生側向漏光。 請參照第五圖’顯示本發明有機發光顯示晝素結構之 第二實施例。此晝素結構包括一玻璃基材3 0 0、一下電極 322、一護層330、一反射層3 6 0、一有機發光層340與一透 明上電極352。玻璃基材3 〇〇之上表面依序製作有一薄膜電 晶體400與一覆蓋此薄膜電晶體4〇〇之阻障層31〇。護層33〇 係製作於此阻障層3 1 〇上，並且具有一開口 3 3 2以定義此畫 素結構中發光二極體之位置。反射層3 6 0係製作於此開口 332中，可區分為—製作於此開口332底部之底面部分 與一製作於此開口側壁之侧面部分3 6 〇 b。下電極3 2 2係製1313145 V. DESCRIPTION OF THE INVENTION (4) The four-B diagram corresponds to the wearing diagram of the b-b section line in the fourth A diagram. The pixel structure includes a glass substrate 300, a transparent lower electrode 320, a sheath 330, a reflective wall 361, an organic light-emitting layer 340, and a metal upper electrode 350. A thin film transistor 4 is formed on the upper surface of the glass substrate 300, and a barrier layer 3 10 covering the thin film transistor 40 is sequentially formed. A transparent lower electrode 3 2 is formed on the barrier layer 31 0 and connected to the thin film transistor 4 〇 . A protective layer 303 is formed on the glass substrate 300, covering the thin film transistor 4 〇〇 and a portion of the lower electrode 320, and has an opening 332 to expose a portion of the lower electrode 320, thereby defining the luminescence in the fluorene structure. The position of the diode. The reflective wall 361 is formed on the sidewall surface of the sheath opening 323, and the organic luminescent layer 34 is formed on the upper surface of the lower electrode 320, the reflective wall 361 and the protective layer 330, and at the same time, the metal upper electrode 350 The surface of the organic light-emitting layer 34 is formed on the surface. Thereby, the light emission of the organic light-emitting layer 340 is reflected and concentrated by the reflection wall 36 and the metal upper electrode 350, thereby ensuring that light is diverged in the direction of the lower glass substrate 3 while avoiding lateral light leakage. Referring to Fig. 5', a second embodiment of the organic light-emitting display unit structure of the present invention is shown. The halogen structure comprises a glass substrate 300, a lower electrode 322, a cover 330, a reflective layer 360, an organic light-emitting layer 340 and a transparent upper electrode 352. A thin film transistor 400 and a barrier layer 31 covering the thin film transistor 4 are sequentially formed on the surface of the glass substrate 3. A protective layer 33 is formed on the barrier layer 3 1 , and has an opening 3 3 2 to define the position of the light-emitting diode in the pixel structure. The reflective layer 306 is formed in the opening 332 and can be divided into a bottom portion formed at the bottom of the opening 332 and a side portion 3 6 〇 b formed on the side wall of the opening. Lower electrode 3 2 2 system
1313145 五、發明說明（5) 作於上述底面部分360a之上表面，並且延伸連接至薄膜電 晶體400。有機發光層340係製作於下電極322與護層330之 上表面’同時，透明上電極3 5 2係製作於此有機發光層3 4 〇 之上表面。藉由上述反射板362與反射間隙壁364之反射效 果’可產生一類似聚光之效果，確保有機發光層340之發 光往上電極352之方向發散’同時避免產生側向漏光。 請參照第六圖’顯示本發明有機發光顯示畫素結構之 第三實施例。此晝素結構包括一玻璃基材3 〇 〇、一下電極 324、一護層3 30、一反射層370、一有機發光層34()與一透 明上電極352。玻璃基材300之上表面依序製作有一薄膜電 b曰體400與一覆蓋此薄膜電晶體4〇〇之阻障層。。型反射 層370係製作於此阻障層310上，並且延伸至上述薄膜電晶 體400上方。此反射層370可區分為一底面部分37〇&與一位 延伸至薄膜電晶體400上方之側面部分37〇b。下電極324係 製作於上述底面部分370a之上表面，並且延伸連接上述薄 膜電晶體40 0。護層330係製作於阻障層31〇與下電極324 ^ ’並且具有-開口 33 2暴露部份上述下電極m，藉以定 ^此畫素結構中發光二極體之位置。有機發光層34〇係製 作於此開口332之底面，並且延伸覆蓋護層33〇，同時，透 明上電極352係製作於此有機發光層34〇之上 形反射層370之反射，可產生一類似聚光之效果，曰確保 有機發光層340之發光往上電+ ” 產生側向漏光。 電極352之方向發散，同時避免 相較於傳統有機發光顯示器，本發明之晝素結構具有1313145 5. The invention (5) is formed on the upper surface of the bottom surface portion 360a and is extended to the thin film transistor 400. The organic light-emitting layer 340 is formed on the upper surface ‘ of the lower electrode 322 and the protective layer 330, and the transparent upper electrode 325 is formed on the upper surface of the organic light-emitting layer 34 〇. By the reflection effect of the reflecting plate 362 and the reflective spacer 364, a similar collecting effect can be produced, ensuring that the light emitted from the organic light-emitting layer 340 is diverged toward the upper electrode 352 while avoiding lateral light leakage. Referring to Fig. 6', a third embodiment of the organic light-emitting display pixel structure of the present invention is shown. The halogen structure comprises a glass substrate 3 〇 , a lower electrode 324 , a cover layer 30 30 , a reflective layer 370 , an organic light-emitting layer 34 ( ) and a transparent upper electrode 352 . A thin film dielectric body 400 and a barrier layer covering the thin film transistor 4 are sequentially formed on the upper surface of the glass substrate 300. . A reflective layer 370 is formed on the barrier layer 310 and extends over the thin film transistor 400. The reflective layer 370 can be divided into a bottom portion 37 〇 & and a side portion 37 〇 b extending above the thin film transistor 400. The lower electrode 324 is formed on the upper surface of the above-mentioned bottom surface portion 370a, and is extended to connect the above-mentioned thin film transistor 40 0 . The protective layer 330 is formed on the barrier layer 31A and the lower electrode 324^' and has an opening 33 2 exposing a portion of the lower electrode m to define the position of the light-emitting diode in the pixel structure. The organic light-emitting layer 34 is formed on the bottom surface of the opening 332, and extends over the cover layer 33, while the transparent upper electrode 352 is formed on the organic light-emitting layer 34A to reflect the reflection layer 370, which can produce a similar The effect of concentrating, ensuring that the illuminating of the organic luminescent layer 340 is powered up + ” produces lateral leakage. The direction of the electrode 352 is diverged while avoiding the halogen structure of the present invention compared to the conventional organic luminescent display.
第9頁 1313145 五、發明說明（6) 下列優點： 一、 藉由 之輔助，可以 往側方向散失 二、 藉由 之輔助，可以 顯示色彩之偏 明，當紅色晝 晝素之發光中 黃色（就加法 以上所述 制本發明之範 而作些微的改 不脫離本發明 〜--- 反射壁361或是反射層側面部分36〇a或370a 會聚有機發光二極體之發光，同時避免光線 ，藉以提高發光顯示之效率。 =:=1或疋、反射層側面部分或37〇& 差發f溢散至鄰近晝素，而造成晝素 素之發光溢散至以結構繼 ，因而導致外界所男 '旦素將此入綠色 混色而言，紅色上，綠色畫素之發光帶有 係利用較佳實施例以現黃色）。 Γ而且熟知明非限 ’复及S周整，仍將不 白月b明瞭，適當 之精神和範圍。 明之要義所在，亦Page 9 1313145 V. Description of invention (6) The following advantages: 1. With the aid of the aid, it can be dissipated in the lateral direction. Secondly, with the aid of it, the color can be displayed. When the red element is illuminated in yellow ( The addition of the above-described method of the present invention is slightly modified without departing from the present invention. The reflective wall 361 or the reflective layer side portion 36A or 370a condenses the light emitted by the organic light-emitting diode while avoiding light. In order to improve the efficiency of the illuminating display. =: = 1 or 疋, the side of the reflective layer or 37 〇 & 差 f f to the neighboring 昼 , , , , , , , , , , , , , , , , , , , , , , , 发光 发光 发光 发光 发光 发光In the case of a green color mixture, the red color of the green pixel is illuminated by the preferred embodiment (see yellow). Γ 熟知 熟知 熟知 熟知 熟知 熟知 熟知 熟知 ’ ’ ’ ’ 复 复 复 复 复 复 复 复 复 复 S S S S S S S The essence of the Ming Dynasty is also
1313145 圖式簡單說明 第12頁1313145 Simple description of the diagram Page 12