TW201724497A - Organic light emitting diode display device - Google Patents
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- 229910052581 Si3N4 Inorganic materials 0.000 description 1
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
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- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
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- H10K59/12—Active-matrix OLED [AMOLED] displays
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- H10K59/12—Active-matrix OLED [AMOLED] displays
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- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/805—Electrodes
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- H10K71/10—Deposition of organic active material
- H10K71/12—Deposition of organic active material using liquid deposition, e.g. spin coating
- H10K71/13—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing
- H10K71/135—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing using ink-jet printing
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Abstract
Description
本發明係關於一種有機發光二極體顯示裝置(OLED),尤其是關於一種能夠改善有機發光層厚度一致性的有機發光二極體顯示裝置。 The present invention relates to an organic light emitting diode display device (OLED), and more particularly to an organic light emitting diode display device capable of improving the thickness uniformity of an organic light emitting layer.
近來,平面顯示裝置,例如:電漿顯示面板(PDP)、液晶顯示裝置(LCD)與有機發光二極體顯示裝置已被深入研發中。 Recently, flat display devices such as a plasma display panel (PDP), a liquid crystal display device (LCD), and an organic light emitting diode display device have been intensively developed.
在這些平面顯示裝置中,有機發光二極體顯示裝置係一種可自發光的裝置,由於不需要LCD所需的背光模組,因而可用於製造超薄的顯示裝置。 Among these flat display devices, the organic light emitting diode display device is a self-luminous device which can be used for manufacturing an ultra-thin display device since a backlight module required for an LCD is not required.
此外,相較於LCD,有機發光二極體顯示裝置具有優異的可視角、對比率、低耗電、低直流電壓的操作性、反應速度快、因係固態內部零件而耐於外部衝擊、以及廣泛的操作溫度範圍等優點。 In addition, compared with the LCD, the organic light-emitting diode display device has excellent viewing angle, contrast ratio, low power consumption, low DC voltage operability, fast response speed, resistance to external impact due to solid internal parts, and A wide range of operating temperatures and other advantages.
特別的是,製造有機發光二極體顯示裝置的過程簡單,製造成本可降低得比LCD還多。 In particular, the process of manufacturing an organic light-emitting diode display device is simple, and the manufacturing cost can be reduced more than that of the LCD.
圖1係習知OLED的平面圖,圖2A係沿著圖1中IIa-IIa剖線的剖面圖,而圖2B係沿著圖1中IIb-IIb剖線的剖面圖。 1 is a plan view of a conventional OLED, FIG. 2A is a cross-sectional view taken along line IIa-IIa of FIG. 1, and FIG. 2B is a cross-sectional view taken along line IIb-IIb of FIG.
請參閱圖1至圖2B,習知的有機發光二極體顯示裝置包括一基板11,該基板11包含以水平方向布置的第一至第三像素區域P1~P3;一平坦化層17,設置在基板11上;一第一電極20,設置在平坦化層17上,並設於第一至第三像素區域P1~P3的每一個區域中;以及一堤岸50,該堤岸50覆蓋第一電極20的邊緣部分,並圍繞平坦化層17上第一至第三像素區域的每一個區域。 Referring to FIG. 1 to FIG. 2B, a conventional organic light emitting diode display device includes a substrate 11 including first to third pixel regions P1 to P3 arranged in a horizontal direction, and a planarization layer 17 disposed. On the substrate 11, a first electrode 20 is disposed on the planarization layer 17 and disposed in each of the first to third pixel regions P1 to P3; and a bank 50 covering the first electrode An edge portion of 20 surrounds each of the first to third pixel regions on the planarization layer 17.
該有機發光二極體顯示裝置進一步在第一至第三像素區域P1~P3之間的邊界部分B1、B2上包括以垂直方向設置的電源線13與資料線15;以 及與電源線13與資料線15交錯的閘極線14,該閘極線14設於第一至第三像素區域P1~P3的下側。 The organic light emitting diode display device further includes a power supply line 13 and a data line 15 disposed in a vertical direction on the boundary portions B1, B2 between the first to third pixel regions P1 to P3; And a gate line 14 interleaved with the power line 13 and the data line 15, the gate line 14 being disposed on the lower side of the first to third pixel regions P1 to P3.
一閘極絕緣層12設置在基板11上以覆蓋閘極線14,而平坦化層17設置在該閘極絕緣層12上以覆蓋電源線13與資料線15。 A gate insulating layer 12 is disposed on the substrate 11 to cover the gate line 14, and a planarization layer 17 is disposed on the gate insulating layer 12 to cover the power line 13 and the data line 15.
當有機發光二極體顯示裝置運作時,一驅動電壓通過單一電源線13施加第一至第三像素區域P1~P3,因此,該驅動電壓會降低而使顯示品質衰減。 When the organic light emitting diode display device operates, a driving voltage is applied to the first to third pixel regions P1 to P3 through the single power supply line 13, and therefore, the driving voltage is lowered to degrade the display quality.
為避免驅動電壓降低,第一、第二像素區域P1、P2之間的第一邊界部分B1的寬度比第二、第三像素區域P2、P3之間的第二邊界部分B2的寬度為寬。電源線13係設置在第一邊界部分B1處的閘極絕緣層12上,而資料線15係設置在第二邊界部分B2處的閘極絕緣層12上。 In order to avoid a decrease in the driving voltage, the width of the first boundary portion B1 between the first and second pixel regions P1, P2 is wider than the width of the second boundary portion B2 between the second and third pixel regions P2, P3. The power supply line 13 is disposed on the gate insulating layer 12 at the first boundary portion B1, and the data line 15 is disposed on the gate insulating layer 12 at the second boundary portion B2.
藉此,電源線13的寬度與第一邊界部分B1的寬度高度對應,因此即便是在一大尺寸的有機發光二極體顯示裝置中,驅動電壓的降低可被減少,而避免了顯示品質的衰減。 Thereby, the width of the power supply line 13 corresponds to the width of the first boundary portion B1, so that even in a large-sized organic light-emitting diode display device, the reduction of the driving voltage can be reduced, and the display quality is avoided. attenuation.
在第一邊界部分B1處的堤岸50的寬度係比在第二邊界部分B2處的堤岸50的寬度為寬。 The width of the bank 50 at the first boundary portion B1 is wider than the width of the bank 50 at the second boundary portion B2.
有機發光層70a、70b、70c分別形成在各個第一電極20上,而該等有機發光層70a、70b、70c係以一溶液製程方法來形成,例如:注射列印法、噴嘴列印法等。 The organic light-emitting layers 70a, 70b, and 70c are respectively formed on the respective first electrodes 20, and the organic light-emitting layers 70a, 70b, and 70c are formed by a solution process, for example, an injection printing method, a nozzle printing method, or the like. .
詳言之,請參閱圖2A與圖2B,一有機發光材料溶液被滴於第一至第三像素區域P1~P3上之每一個區域的第一電極20上,之後將該有機發光材料溶液進行乾燥,即可形成有機發光層70a、70b、70c。然而,具有此結構的OLED容易造成例如OLED顯示品質衰減、光發射效率降低與OLED壽命的縮短。經過研究後發現了造成此缺陷的可能理由,以下將詳述之,而本發明的部分實施例係基於此發現。 In detail, referring to FIG. 2A and FIG. 2B, an organic light-emitting material solution is dropped on the first electrode 20 of each of the first to third pixel regions P1 to P3, and then the organic light-emitting material solution is performed. The organic light-emitting layers 70a, 70b, and 70c are formed by drying. However, an OLED having such a structure is liable to cause, for example, OLED display quality degradation, reduction in light emission efficiency, and shortening of OLED lifetime. Possible reasons for this defect have been discovered after research, which will be described in detail below, and some embodiments of the present invention are based on this finding.
在此例中,在第一邊界部分B1處的堤岸50的寬度係比在第二邊界部分B2處的堤岸50的寬度為寬。 In this example, the width of the bank 50 at the first boundary portion B1 is wider than the width of the bank 50 at the second boundary portion B2.
因此,對於滴於第一至第三像素區域P1~P3之每一個區域中的有機發光材料溶液而言,位於第一、第二像素區域P1、P2中接近第一邊界部分B1 該側的有機發光材料溶液,其溶劑分子蒸發的環境即與位於第二、第三像素區域P2、P3中接近第二邊界部分B2該側者有所不同。 Therefore, for the organic light-emitting material solution dropped in each of the first to third pixel regions P1 to P3, the first boundary portion B1 is located in the first and second pixel regions P1 and P2. The environment of the organic light-emitting material solution on the side, in which the solvent molecules evaporate, is different from the side located in the second and third pixel regions P2 and P3 which is close to the second boundary portion B2.
換句話說,當對該有機發光材料溶液進行乾燥時,位於第一、第二像素區域P1、P2中接近第一邊界部分B1該側的有機發光材料溶液,其溶劑分子蒸發率將比位於第二、第三像素區域P2、P3中接近第二邊界部分B2該側的蒸發率快。 In other words, when the organic luminescent material solution is dried, the organic luminescent material solution located on the side of the first and second pixel regions P1 and P2 close to the first boundary portion B1 has a solvent molecular evaporation rate ratio 2. The evaporation rate of the third pixel region P2, P3 on the side close to the second boundary portion B2 is fast.
因此,將有機發光材料溶液進行乾燥後,如圖2A所示,不像在第三像素區域P3中所形成的有機發光層70c,在第一、第二像素區域P1、P2中所形成的有機發光層70a、70b,其接近第一邊界部分B1的區域,厚度變得較厚些。 Therefore, after the organic light-emitting material solution is dried, as shown in FIG. 2A, unlike the organic light-emitting layer 70c formed in the third pixel region P3, the organic layers formed in the first and second pixel regions P1, P2 are formed. The light-emitting layers 70a, 70b, which are close to the region of the first boundary portion B1, have a thicker thickness.
由於有機發光層70a、70b、70c厚度的不一致,使得OLED的顯示品質衰減、光發射效率降低,也縮短了OLED的壽命。 Due to the inconsistency in the thickness of the organic light-emitting layers 70a, 70b, and 70c, the display quality of the OLED is attenuated, the light emission efficiency is lowered, and the lifetime of the OLED is also shortened.
本發明提供一種有機發光二極體顯示裝置,能夠實質消解決知技術中因為限制或缺點所產生的問題。 The present invention provides an organic light emitting diode display device capable of substantially solving the problems caused by limitations or disadvantages in the prior art.
本發明的一目的在於改善有機發光層厚度不一致以及亮度不一致的問題。 An object of the present invention is to improve the problem of inconsistent thickness and uneven brightness of the organic light-emitting layer.
本發明之其他技術特徵與優點將會在以下說明,部分可由說明或實施得以知悉。本發明的優點可由以下說明書、申請專利範圍與圖式所指出的結構輕易了解或完成。 Other technical features and advantages of the invention will be set forth in the description which follows. The advantages of the present invention can be easily understood or accomplished by the following description, the scope of the patent application and the structure indicated by the drawings.
為了達成前述的目的與優點,且可具體實施且廣泛說明,本發明提供一種有機發光二極體顯示裝置,包括:一基板,該基板包含以水平方向布置之至少三個像素區域;一第一電極,設置在該基板上之每一個像素區域中;一堤岸,圍繞著每一個像素區域;以及一電源線,以水平方向設置在該基板上之每一個像素區域的下側,並對每一個像素區域施加一驅動電壓。 The present invention provides an organic light emitting diode display device including: a substrate including at least three pixel regions arranged in a horizontal direction; a first An electrode disposed in each of the pixel regions on the substrate; a bank surrounding each of the pixel regions; and a power line disposed in a horizontal direction on a lower side of each of the pixel regions on the substrate, and for each A driving voltage is applied to the pixel region.
在進一步態樣中,一種有機發光二極體顯示裝置,包括:一基板,該基板包含相互交錯之複數條閘極線與複數條資料線、以及以水平方向布置並位於該等閘極線與該等資料線相互交錯處之至少三個像素區域;一第一電極, 設置在該基板上之每一個像素區域中;一堤岸,圍繞著每一個像素區域;以及一電源線,與該閘極線平行,並對每一個像素區域施加一驅動電壓。 In a further aspect, an organic light emitting diode display device includes: a substrate including a plurality of gate lines and a plurality of data lines interleaved with each other, and arranged in a horizontal direction and located at the gate lines At least three pixel regions where the data lines are interlaced; a first electrode, Provided in each of the pixel regions on the substrate; a bank surrounding each of the pixel regions; and a power line parallel to the gate lines and applying a driving voltage to each of the pixel regions.
在另一態樣中,一種有機發光二極體顯示裝置,包括:一基板,該基板包含以複數個縱向布置的複數個像素區域,在同一縱行上的該等像素區域發射相同的顏色;一第一電極,設置在該基板上之每一個像素區域中;一堤岸,圍繞著每一個像素群,該像素群由同一縱行上二個或以上相鄰的像素區域所組成;以及一有機發光層,設置在該第一電極上,並且對應於每一個像素群。 In another aspect, an organic light emitting diode display device includes: a substrate including a plurality of pixel regions arranged in a plurality of longitudinal directions, wherein the pixel regions on the same vertical row emit the same color; a first electrode disposed in each of the pixel regions on the substrate; a bank surrounding each of the pixel groups, the pixel group being composed of two or more adjacent pixel regions on the same wales; and an organic A light emitting layer is disposed on the first electrode and corresponds to each pixel group.
在又一態樣中,一種有機發光二極體顯示裝置,包括:一基板,包含以複數個縱向布置的複數個像素區域,在同一縱行上的該等像素區域發射相同的顏色;一第一電極,設置在該基板上之每一個像素區域中;一堤岸,設置在每一縱行相鄰的像素區域之間,該堤岸包括至少一第一部分以及由該第一部分兩側延伸的第二部分,該等第二部分的厚度小於該第一部分的厚度;以及一有機發光層,設置在該第一電極上與該等第二部分上。 In another aspect, an organic light emitting diode display device includes: a substrate including a plurality of pixel regions arranged in a plurality of longitudinal directions, the pixel regions emitting the same color on the same vertical row; An electrode disposed in each of the pixel regions on the substrate; a bank disposed between each adjacent row of pixel regions, the bank including at least a first portion and a second portion extending from both sides of the first portion a portion of the second portion having a thickness less than a thickness of the first portion; and an organic light-emitting layer disposed on the first electrode and the second portion.
前述說明以及以下所列舉的實施例與描述係用以闡明本發明。 The foregoing description and the following examples and description are intended to illustrate the invention.
11‧‧‧基板 11‧‧‧Substrate
12‧‧‧閘極絕緣層 12‧‧‧ gate insulation
13‧‧‧電源線 13‧‧‧Power cord
14‧‧‧閘極線 14‧‧‧ gate line
15‧‧‧資料線 15‧‧‧Information line
17‧‧‧平坦化層 17‧‧ ‧ flattening layer
20‧‧‧第一電極 20‧‧‧First electrode
50‧‧‧堤岸 50‧‧‧ embankment
70a、70b、70c‧‧‧有機發光層 70a, 70b, 70c‧‧‧ organic light-emitting layer
101‧‧‧基板 101‧‧‧Substrate
112‧‧‧閘極絕緣層 112‧‧‧ gate insulation
113‧‧‧電源線 113‧‧‧Power cord
114‧‧‧閘極線 114‧‧‧ gate line
115‧‧‧資料線 115‧‧‧Information line
117‧‧‧平坦化層 117‧‧‧flattening layer
120‧‧‧第一電極 120‧‧‧first electrode
150‧‧‧堤岸 150‧‧‧ embankment
170a、170b、170c‧‧‧有機發光層 170a, 170b, 170c‧‧‧ organic light-emitting layer
201‧‧‧基板 201‧‧‧Substrate
212‧‧‧閘極絕緣層 212‧‧‧ gate insulation
213‧‧‧電源線 213‧‧‧Power cord
214‧‧‧閘極線 214‧‧‧ gate line
215‧‧‧資料線 215‧‧‧Information line
217‧‧‧平坦化層 217‧‧ ‧ flattening layer
220‧‧‧第一電極 220‧‧‧First electrode
221‧‧‧輔助電極 221‧‧‧Auxiliary electrode
250‧‧‧堤岸 250‧‧‧ embankment
270a、270b、270c‧‧‧有機發光層 270a, 270b, 270c‧‧‧ organic light-emitting layer
301‧‧‧基板 301‧‧‧Substrate
320‧‧‧第一電極 320‧‧‧First electrode
340‧‧‧絕緣圖案 340‧‧‧Insulation pattern
350‧‧‧堤岸 350‧‧‧ Embankment
370a、370b、370c‧‧‧有機發光層 370a, 370b, 370c‧‧‧ organic light-emitting layer
401‧‧‧基板 401‧‧‧Substrate
420‧‧‧第一電極 420‧‧‧first electrode
450‧‧‧堤岸 450‧‧‧ embankment
470a、470b、470c‧‧‧有機發光層 470a, 470b, 470c‧‧‧ organic light-emitting layer
500‧‧‧噴頭 500‧‧‧ sprinkler
501‧‧‧基板 501‧‧‧Substrate
510‧‧‧噴嘴 510‧‧‧ nozzle
510a‧‧‧噴嘴 510a‧‧‧ nozzle
520‧‧‧第一電極 520‧‧‧first electrode
550‧‧‧堤岸 550‧‧ ‧ embankment
551‧‧‧第一部分 551‧‧‧Part 1
552‧‧‧第二部分 552‧‧‧Part II
570a、570b、570c‧‧‧有機發光層 570a, 570b, 570c‧‧‧ organic light-emitting layer
B1‧‧‧邊界區域/第一邊界區域 B1‧‧‧Boundary Area/First Boundary Area
B2‧‧‧邊界區域/第二邊界區域 B2‧‧‧Boundary Area/Second Boundary Area
CH‧‧‧接觸孔 CH‧‧‧Contact hole
P1‧‧‧第一像素區域 P1‧‧‧first pixel area
P2‧‧‧第二像素區域 P2‧‧‧second pixel area
P3‧‧‧第三像素區域 P3‧‧‧ third pixel area
PG、PG1、PG2‧‧‧像素群 PG, PG1, PG2‧‧‧ pixel group
所附圖式旨在提供對本發明的更進一步了解,並構成本說明書之一部份,其除說明本發明之實施例外亦在解釋本發明之原理。 The drawings are intended to provide a further understanding of the invention and are intended to be illustrative of the embodiments of the invention.
圖1係習知OLED的平面圖。 Figure 1 is a plan view of a conventional OLED.
圖2A係沿著圖1中IIa-IIa線所截取的剖面圖。 Figure 2A is a cross-sectional view taken along line IIa-IIa of Figure 1.
圖2B係沿著圖1中IIb-IIb線所截取的剖面圖。 Figure 2B is a cross-sectional view taken along line IIb-IIb of Figure 1.
圖3係顯示本發明第一實施例之OLED的平面圖。 Figure 3 is a plan view showing an OLED of a first embodiment of the present invention.
圖4A係沿著圖3中IVa-IVa線所截取的剖面圖。 Figure 4A is a cross-sectional view taken along line IVa-IVa of Figure 3.
圖4B係沿著圖3中IVb-IVb線所截取的剖面圖。 Figure 4B is a cross-sectional view taken along line IVb-IVb of Figure 3.
圖5係本發明第二實施例之OLED的平面圖。 Figure 5 is a plan view of an OLED of a second embodiment of the present invention.
圖6A係沿著圖5中VIa-VIa線所截取的剖面圖。 Figure 6A is a cross-sectional view taken along line VIa-VIa of Figure 5.
圖6B係沿著圖5中VIb-VIb線所截取的剖面圖。 Figure 6B is a cross-sectional view taken along line VIb-VIb of Figure 5.
圖7係顯示本發明第三實施例之OLED的平面圖。 Figure 7 is a plan view showing an OLED of a third embodiment of the present invention.
圖8係沿著圖7中VIII-VIII線所截取的剖面圖。 Figure 8 is a cross-sectional view taken along line VIII-VIII of Figure 7.
圖9係顯示次佳實施例之OLED的平面圖。 Figure 9 is a plan view showing an OLED of a sub-optimal embodiment.
圖10係沿著圖9中X-X線所截取的剖面圖。 Figure 10 is a cross-sectional view taken along line X-X of Figure 9.
圖11係顯示本發明第四實施例之OLED的平面圖。 Figure 11 is a plan view showing an OLED of a fourth embodiment of the present invention.
圖12係沿著圖11中XII-VII線所截取的剖面圖。 Figure 12 is a cross-sectional view taken along line XII-VII of Figure 11.
以下請詳細參照實施例,其所舉實例並以圖式同時說明。相同或類似的元件符號可共用於各圖式而表示相同或類似的元件。 Hereinafter, the embodiments will be referred to in detail, and examples thereof will be described simultaneously with reference to the drawings. The same or similar component symbols may be used in the drawings to represent the same or similar components.
實施例1 Example 1
圖3係本發明第一實施例之OLED的平面圖,圖4A係沿著圖3中IVa-IVa線所截取的剖面圖,而圖4B係沿著圖3中IVb-IVb線所截取的剖面圖。 3 is a plan view of an OLED according to a first embodiment of the present invention, FIG. 4A is a cross-sectional view taken along line IVa-IVa of FIG. 3, and FIG. 4B is a cross-sectional view taken along line IVb-IVb of FIG. .
請參閱圖3,本發明實施例1的OLED,包括:一基板101,該基板101包含以水平方向布置之第一至第三像素區域P1~P3;一第一電極120,設置在基板101上之每一個像素區域P1~P3中;以及設置在基板101上的一閘極線114、一資料線115與一電源線113。 Referring to FIG. 3, an OLED according to Embodiment 1 of the present invention includes: a substrate 101 including first to third pixel regions P1 to P3 arranged in a horizontal direction; and a first electrode 120 disposed on the substrate 101. Each of the pixel regions P1 to P3; and a gate line 114, a data line 115 and a power line 113 disposed on the substrate 101.
基板101可包括至少三個像素區域,例如:可以在第一至第三像素區域P1~P3其中一側旁再布置一第四像素區域。 The substrate 101 may include at least three pixel regions, for example, a fourth pixel region may be disposed next to one of the first to third pixel regions P1 to P3.
詳言之,閘極線114係以水平方向布置在第一至第三像素區域P1~P3的下側,而資料線115與閘極線114相交錯,並布置在第一至第三像素區域P1~P3間之每一個邊界部分B1、B2處。 In detail, the gate line 114 is disposed on the lower side of the first to third pixel regions P1 to P3 in the horizontal direction, and the data line 115 is interleaved with the gate line 114 and disposed in the first to third pixel regions. Each of the boundary portions B1, B2 between P1 and P3.
電源線113係布置在第一至第三像素區域P1~P3的下側,並與閘極線114相隔開,且與閘極線114相平行。 The power supply line 113 is disposed on the lower side of the first to third pixel regions P1 to P3, and is spaced apart from the gate line 114 and parallel to the gate line 114.
請參閱圖4A與圖4B,OLED進一步包括一堤岸150,該堤岸150設置在平坦化層117上,而平坦化層117形成在資料線115上。 Referring to FIGS. 4A and 4B, the OLED further includes a bank 150 disposed on the planarization layer 117 and a planarization layer 117 formed on the data line 115.
堤岸150覆蓋第一電極120的一邊緣部分,並圍繞每一個第一至第三像素區域P1~P3。 The bank 150 covers an edge portion of the first electrode 120 and surrounds each of the first to third pixel regions P1 to P3.
OLED進一步包括一設在基板101上的閘極絕緣層112,該閘極絕緣層112覆蓋電源線113與閘極線114,並設置在平坦化層117下方。 The OLED further includes a gate insulating layer 112 disposed on the substrate 101. The gate insulating layer 112 covers the power line 113 and the gate line 114 and is disposed under the planarization layer 117.
資料線115設置在閘極絕緣層112與平坦化層117之間,而第一電極120則設置在平坦化層117上。 The data line 115 is disposed between the gate insulating layer 112 and the planarization layer 117, and the first electrode 120 is disposed on the planarization layer 117.
電源線113與閘極線114可形成於同一層中,並可以相同的材料形成。 The power line 113 and the gate line 114 may be formed in the same layer and may be formed of the same material.
第一電極120可由具有相對較高功函數的一透明導電材料形成,而可用作一陽極。堤岸150則可以由一疏水性材料所形成。 The first electrode 120 may be formed of a transparent conductive material having a relatively high work function and may be used as an anode. The bank 150 can be formed from a hydrophobic material.
為了應用於大尺寸OLED,傳統上,數個第一至第三像素區域P1~P3需要通過單一的電源線113施加一驅動電壓,但此可能會導致驅動電壓之下降,並使顯示品質衰減。 In order to apply to a large-sized OLED, conventionally, the plurality of first to third pixel regions P1 to P3 need to apply a driving voltage through a single power source line 113, but this may cause a drop in driving voltage and attenuate display quality.
在本發明第一實施例的OLED中,電源線113係以水平方向布置在第一至第三像素區域P1~P3的下側,而該驅動電壓係從電源線113的二端施加,因此,驅動電壓下降的問題可被避免。 In the OLED of the first embodiment of the present invention, the power source line 113 is disposed on the lower side of the first to third pixel regions P1 to P3 in the horizontal direction, and the driving voltage is applied from both ends of the power source line 113, and therefore, The problem of a drop in driving voltage can be avoided.
因此,即使用於大尺寸OLED,驅動電壓下降的情形可被最小化,而顯示品質的衰減也可被避免。 Therefore, even for a large-sized OLED, the case where the driving voltage is lowered can be minimized, and the degradation of the display quality can be avoided.
由於該驅動電壓係由電源線113的二端施加,電源線113的寬度可隨著驅動電壓下降的減少而變窄。因此,可減小因電源線113的配置而使開口率縮小的問題。 Since the driving voltage is applied from both ends of the power supply line 113, the width of the power supply line 113 can be narrowed as the driving voltage decreases. Therefore, the problem that the aperture ratio is reduced due to the arrangement of the power source line 113 can be reduced.
有機發光層170a、170b、170c分別形成於各個第一電極120上。有機發光層170a、170b、170c係以一溶液製程方法進行積層,例如:注射列印法、噴嘴列印法等。 Organic light-emitting layers 170a, 170b, and 170c are formed on the respective first electrodes 120, respectively. The organic light-emitting layers 170a, 170b, and 170c are laminated by a solution process such as an injection printing method, a nozzle printing method, or the like.
詳言之,將有機發光材料溶液滴於第一至第三像素區域P1~P3中每一個第一電極120上,之後將該有機發光材料溶液進行乾燥,即可形成有機發光層170a、170b、170c。 In detail, the organic light-emitting material solution is dropped on each of the first to third pixel regions P1 to P3, and then the organic light-emitting material solution is dried to form the organic light-emitting layers 170a and 170b. 170c.
由於堤岸150係疏水性,該堤岸150可作為一分隔壁以避免滴落於第一至第三像素區域P1~P3中的有機發光材料溶液相混合。 Since the bank 150 is hydrophobic, the bank 150 can serve as a partition wall to avoid mixing of the organic light-emitting material solutions dropped in the first to third pixel regions P1 to P3.
此外,資料線115係布置在第一至第三像素區域P1~P3間之邊界部分B1、B2處,而電源線則係布置在第一至第三像素區域P1~P3的下側。因此,第一邊界部分B1的寬度相同於第二邊界部分B2的寬度,而第一邊界部分B1中的堤岸150的寬度也與第二邊界部分B2中的堤岸150的寬度相同。 Further, the data line 115 is disposed at the boundary portions B1, B2 between the first to third pixel regions P1 to P3, and the power supply lines are disposed on the lower sides of the first to third pixel regions P1 to P3. Therefore, the width of the first boundary portion B1 is the same as the width of the second boundary portion B2, and the width of the bank 150 in the first boundary portion B1 is also the same as the width of the bank 150 in the second boundary portion B2.
當第一邊界部分B1與第二邊界部分B2的寬度相同時,第一至第三像素區域P1~P3中短軸(平行方向)上之有機發光材料溶液的量是彼此相同的。 When the widths of the first boundary portion B1 and the second boundary portion B2 are the same, the amounts of the organic light-emitting material solutions on the short axes (parallel directions) of the first to third pixel regions P1 to P3 are identical to each other.
藉此,在乾燥有機發光材料溶液的過程中,第一至第三像素區域P1~P3中短軸上之有機發光材料溶液的溶劑分子的蒸發率就可彼此相同。 Thereby, in the process of drying the organic light-emitting material solution, the evaporation rates of the solvent molecules of the organic light-emitting material solution on the short axis of the first to third pixel regions P1 to P3 may be identical to each other.
此外,經過乾燥過程後,第一至第三像素區域P1~P3中短軸上之有機發光層170a、170b、170c的厚度即可達到一致。 Further, after the drying process, the thicknesses of the organic light-emitting layers 170a, 170b, and 170c on the short axes of the first to third pixel regions P1 to P3 can be made uniform.
因此,可藉此避免OLED顯示品質的衰減、光發射效率的降低以及OLED壽命的縮短。 Therefore, it is possible to avoid attenuation of OLED display quality, reduction in light emission efficiency, and shortening of OLED lifetime.
實施例2 Example 2
圖5係顯示本發明第二實施例之OLED的平面圖,圖6A係沿著圖5中VIa-VIa線所截取的剖面圖,而圖6B係沿著圖5中VIb-VIb線所截取的剖面圖。 Figure 5 is a plan view showing an OLED according to a second embodiment of the present invention, Figure 6A is a cross-sectional view taken along line VIa-VIa of Figure 5, and Figure 6B is a cross-section taken along line VIb-VIb of Figure 5. Figure.
請參閱圖5,本發明第二實施例的OLED,包括:一基板201,該基板201包含以水平方向布置之第一至第三像素區域P1~P3;一第一電極220,設置在基板201上之第一至第三像素區域P1~P3的每一個區域中;以及設置在基板201上的一閘極線214、一資料線215與一電源線213。 Referring to FIG. 5, an OLED according to a second embodiment of the present invention includes a substrate 201 including first to third pixel regions P1 to P3 arranged in a horizontal direction, and a first electrode 220 disposed on the substrate 201. Each of the first to third pixel regions P1 to P3; and a gate line 214, a data line 215, and a power line 213 disposed on the substrate 201.
基板201可包括至少三個像素區域,例如:可以在第一至第三像素區域P1~P3其中一側旁再布置一第四像素區域。 The substrate 201 may include at least three pixel regions, for example, a fourth pixel region may be disposed next to one of the first to third pixel regions P1 to P3.
此外,OLED可進一部包括一輔助電極221,該輔助電極221設置在像素區域垂直方向間之邊界部分中,並與第一電極220間隔一空間設置。 In addition, the OLED may further include an auxiliary electrode 221 disposed in a boundary portion between the vertical direction of the pixel region and spaced apart from the first electrode 220 by a space.
詳言之,閘極線214係以水平方向布置在第一至第三像素區域P1~P3的下側。資料線215與閘極線214相交錯,並布置在第一至第三像素區域P1~P3間之每一個邊界部分B1、B2處。 In detail, the gate lines 214 are arranged on the lower side of the first to third pixel regions P1 to P3 in the horizontal direction. The data line 215 is interleaved with the gate line 214 and disposed at each of the boundary portions B1, B2 between the first to third pixel regions P1 to P3.
電源線213係布置在第一至第三像素區域P1~P3的下側,並與閘極線214相隔開,且電源線213與閘極線214相平行。電源線213通過一接觸孔CH與輔助電極221電性相連接。 The power supply line 213 is disposed on the lower side of the first to third pixel regions P1 to P3, and is spaced apart from the gate line 214, and the power supply line 213 is parallel to the gate line 214. The power supply line 213 is electrically connected to the auxiliary electrode 221 through a contact hole CH.
請參閱圖6A與圖6B,OLED進一步包括一堤岸250,該堤岸250設置在平坦化層217上,而平坦化層217形成在資料線215上。 Referring to FIGS. 6A and 6B, the OLED further includes a bank 250 disposed on the planarization layer 217, and a planarization layer 217 formed on the data line 215.
堤岸250覆蓋第一電極220的邊緣部分,並圍繞每一個第一至第三像素區域P1~P3。 The bank 250 covers the edge portion of the first electrode 220 and surrounds each of the first to third pixel regions P1 to P3.
OLED進一步包括一設置在基板201上的閘極絕緣層212,該閘極絕緣層212覆蓋電源線213與閘極線214,並設置在平坦化層217下方。 The OLED further includes a gate insulating layer 212 disposed on the substrate 201. The gate insulating layer 212 covers the power line 213 and the gate line 214 and is disposed under the planarization layer 217.
資料線215設置在閘極絕緣層212與平坦化層217之間,而第一電極220則設置在平坦化層217上。 The data line 215 is disposed between the gate insulating layer 212 and the planarization layer 217, and the first electrode 220 is disposed on the planarization layer 217.
閘極絕緣層212與平坦化層217包括一接觸孔CH,以露出電源線213的一部份,而電源線213通過該接觸孔CH與輔助電極221相連接。 The gate insulating layer 212 and the planarization layer 217 include a contact hole CH to expose a portion of the power line 213, and the power line 213 is connected to the auxiliary electrode 221 through the contact hole CH.
雖然圖中未示,輔助電極221可連接至一驅動薄膜電晶體。 Although not shown, the auxiliary electrode 221 can be connected to a driving thin film transistor.
電源線213與閘極線214可形成於同一層中,並可以相同的材料形成。第一電極220與輔助電極221可形成於同一層中,並可以相同的材料形成。 The power line 213 and the gate line 214 may be formed in the same layer and may be formed of the same material. The first electrode 220 and the auxiliary electrode 221 may be formed in the same layer and may be formed of the same material.
第一電極220可由具有相對較高功函數的一透明導電材料形成,而可用作一陽極。堤岸250則可以一疏水性材料形成。 The first electrode 220 may be formed of a transparent conductive material having a relatively high work function and may be used as an anode. The bank 250 can be formed from a hydrophobic material.
為了應用於大尺寸OLED,傳統上,數個第一至第三像素區域P1~P3需要通過單一的電源線213施加一驅動電壓,但此可能會導致驅動電壓的下降,並使顯示品質衰減。 In order to apply to a large-sized OLED, conventionally, the plurality of first to third pixel regions P1 to P3 need to apply a driving voltage through a single power supply line 213, but this may cause a drop in driving voltage and attenuate display quality.
在本發明第二實施例的OLED中,電源線213係以水平方向布置在第一至第三像素區域P1~P3的下側,而該驅動電壓係從電源線213的二端施加,因此,驅動電壓下降的問題可被避免。 In the OLED of the second embodiment of the present invention, the power supply line 213 is disposed on the lower side of the first to third pixel regions P1 to P3 in the horizontal direction, and the driving voltage is applied from both ends of the power supply line 213, and therefore, The problem of a drop in driving voltage can be avoided.
因此,即使用於大尺寸OLED,驅動電壓下降的情形可被最小化,而顯示品質的衰減也可被避免。 Therefore, even for a large-sized OLED, the case where the driving voltage is lowered can be minimized, and the degradation of the display quality can be avoided.
由於驅動電壓係由電源線213的二端施加,電源線213的寬度可隨著驅動電壓下降的減少而變窄。因此,可減小因於電源線113的設置而使開口率縮小的問題。 Since the driving voltage is applied from both ends of the power supply line 213, the width of the power supply line 213 can be narrowed as the driving voltage decreases. Therefore, the problem that the aperture ratio is reduced due to the setting of the power source line 113 can be reduced.
此外,由於電源線213係通過接觸孔CH與輔助電極221電性相連接,因此可減小電源線213的片電阻(sheet resistance)。電源線213的寬度可依電源線片電阻之減小而縮小,因此,開口率縮小的問題也可被減輕。 Further, since the power supply line 213 is electrically connected to the auxiliary electrode 221 through the contact hole CH, the sheet resistance of the power supply line 213 can be reduced. The width of the power supply line 213 can be reduced by the reduction of the power supply line resistance, and therefore, the problem of narrowing the aperture ratio can be alleviated.
有機發光層270a、270b、270c分別形成在各個第一電極220上。有機發光層270a、270b、270c係以一溶液製程方法進行積層,例如:注射列印法、噴嘴列印法等。 Organic light-emitting layers 270a, 270b, and 270c are formed on the respective first electrodes 220, respectively. The organic light-emitting layers 270a, 270b, and 270c are laminated by a solution process, for example, an injection printing method, a nozzle printing method, or the like.
詳言之,將有機發光材料溶液滴於第一至第三像素區域P1~P3之每一個區域的第一電極220上,之後將該有機發光材料溶液進行乾燥,即可形成有機發光層270a、270b、270c。 In detail, the organic light-emitting material solution is dropped on the first electrode 220 of each of the first to third pixel regions P1 to P3, and then the organic light-emitting material solution is dried to form the organic light-emitting layer 270a. 270b, 270c.
由於堤岸250係疏水性,該堤岸250可作為一分隔壁以避免滴落於第一至第三像素區域P1~P3中的有機發光材料溶液相混合。 Since the bank 250 is hydrophobic, the bank 250 can serve as a partition wall to avoid mixing of the organic light-emitting material solutions dropped in the first to third pixel regions P1 to P3.
此外,資料線215係布置在第一至第三像素區域P1~P3間之邊界部分B1、B2處,而電源線則係布置在第一至第三像素區域P1~P3的下側。因此,第一邊界部分B1的寬度相同於第二邊界部分B2的寬度,而第一邊界部分B1中的堤岸250的寬度也與第二邊界部分B2中的堤岸250的寬度相同。 Further, the data line 215 is disposed at the boundary portions B1, B2 between the first to third pixel regions P1 to P3, and the power supply lines are disposed on the lower sides of the first to third pixel regions P1 to P3. Therefore, the width of the first boundary portion B1 is the same as the width of the second boundary portion B2, and the width of the bank 250 in the first boundary portion B1 is also the same as the width of the bank 250 in the second boundary portion B2.
當第一邊界部分B1與第二邊界部分B2的寬度相同時,第一至第三像素區域P1~P3中短軸(平行方向)上之有機發光材料溶液的量是彼此相同的。 When the widths of the first boundary portion B1 and the second boundary portion B2 are the same, the amounts of the organic light-emitting material solutions on the short axes (parallel directions) of the first to third pixel regions P1 to P3 are identical to each other.
藉此,在乾燥有機發光材料溶液的過程中,第一至第三像素區域P1~P3中短軸上之有機發光材料溶液的溶劑分子的蒸發率就可彼此相同。 Thereby, in the process of drying the organic light-emitting material solution, the evaporation rates of the solvent molecules of the organic light-emitting material solution on the short axis of the first to third pixel regions P1 to P3 may be identical to each other.
此外,經過乾燥過程後,第一至第三像素區域P1~P3中短軸上之有機發光層270a、270b、270c的厚度即可達到一致。 Further, after the drying process, the thicknesses of the organic light-emitting layers 270a, 270b, and 270c on the short axes of the first to third pixel regions P1 to P3 can be made uniform.
因此,可藉此避免OLED顯示品質的衰減、光發射效率的降低以及OLED壽命的縮短。 Therefore, it is possible to avoid attenuation of OLED display quality, reduction in light emission efficiency, and shortening of OLED lifetime.
實施例3 Example 3
圖7係顯示本發明第三實施例之OLED的平面圖,圖8係沿著圖7中VIII-VIII線所截取的剖面圖。 Figure 7 is a plan view showing an OLED of a third embodiment of the present invention, and Figure 8 is a cross-sectional view taken along line VIII-VIII of Figure 7.
第三實施例的OLED與第一、第二實施例者相似,但在本實施例中,進一步描述在同一縱行的像素區域發射相同顏色的結構。 The OLED of the third embodiment is similar to the first and second embodiments, but in the present embodiment, a structure in which the same color is emitted in the pixel regions of the same wales is further described.
與第一、第二實施例相似的說明部分在此省略,而為了方便解釋,圖中亦未顯示閘極線、資料線與電源線等。 Descriptions similar to those of the first and second embodiments are omitted herein, and for convenience of explanation, the gate lines, the data lines, the power lines, and the like are not shown.
在本實施例的OLED中,發射相同顏色的像素區域係設置於同一縱行上。例如:位於第一縱行的第一像素區域P1發射紅光,位於第二縱行的第二像素區域P2發射綠光,而位於第三縱行的第三像素區域P3發射藍光。第一像素區域P1、第二像素區域P2與第三像素區域P3在每一橫列上輪流設置。 In the OLED of the present embodiment, pixel regions emitting the same color are disposed on the same wales. For example, the first pixel region P1 located in the first wales emits red light, the second pixel region P2 located in the second wales emits green light, and the third pixel region P3 located in the third wales emits blue light. The first pixel region P1, the second pixel region P2, and the third pixel region P3 are alternately disposed on each of the courses.
一堤岸350可形成於每一橫列上相鄰之像素區域之間。 A bank 350 can be formed between adjacent pixel regions on each course.
於本實施例中,每一縱行上的像素區域,至少二個相鄰的像素區域形成一像素群。於此,在每一個像素群中,相鄰像素區域間的邊界部分並未設置有堤岸,而堤岸350係設於相鄰像素群間之邊界部分上。 In this embodiment, at least two adjacent pixel regions form a pixel group in each pixel region on the wales. Here, in each pixel group, the boundary portion between adjacent pixel regions is not provided with a bank, and the bank 350 is disposed at a boundary portion between adjacent pixel groups.
圖中係以第一像素區域P1為例來說明。每二個相鄰的第一像素區域P1形成每一個像素群PG,而堤岸350並未形成於像素群PG中相鄰之第一像素區域P1之間,但形成於相鄰的第一像素群PG之間,亦即,堤岸350形成於第一像素群PG1中靠外的第一像素區域P1與於第二像素群PG2(相鄰於第一像素群PG1中靠外的第一像素區域P1)中靠外的第一像素區域P1之間。換言之,在每一縱行上,堤岸350係間隔至少兩個像素區域來形成。 The figure is illustrated by taking the first pixel region P1 as an example. Each of the two adjacent first pixel regions P1 forms each pixel group PG, and the bank 350 is not formed between the adjacent first pixel regions P1 in the pixel group PG, but is formed in the adjacent first pixel group. Between the PGs, that is, the bank 350 is formed in the first pixel region P1 outside the first pixel group PG1 and the second pixel group PG2 (the first pixel region P1 adjacent to the first pixel group PG1) Between the first pixel regions P1 outside the middle. In other words, on each of the wales, the banks 350 are formed by spacing at least two pixel regions.
藉由在每一縱行上形成具有由至少二個像素區域所組成的像素群PG的堤岸350,堤岸350圍繞每一個像素群PG,而使每一個發射紅光、綠光與藍光的第一、第二與第三有機發光層370a、370b、370c分別對應於每一個像素群PG而形成。 By forming a bank 350 having a pixel group PG composed of at least two pixel regions on each wales, the bank 350 surrounds each pixel group PG, so that each emits the first of red, green and blue light. The second and third organic light-emitting layers 370a, 370b, and 370c are formed corresponding to each of the pixel groups PG, respectively.
例如:發射紅光的像素群PG被位於縱行兩側(即上側與下側)之堤岸350部份以及位於橫列兩側(即左側與右側)之堤岸350部份所圍繞,而第一發光有基層370a則形成於圍繞著發射紅光之像素群的堤岸350中。 For example, the pixel group PG emitting red light is surrounded by a portion of the bank 350 on both sides of the wales (ie, the upper side and the lower side) and a portion 350 on both sides of the row (ie, the left side and the right side), and the first A light-emitting base layer 370a is formed in the bank 350 surrounding the pixel group that emits red light.
因此,縱行上所設置的堤岸部分(即堤岸圖案)的數量可被減少,而對應於每一個像素群PG所形成的有機發光層的單一區域面積可被增加。 Therefore, the number of bank portions (i.e., bank patterns) provided on the wales can be reduced, and the area of a single region corresponding to the organic light-emitting layer formed by each pixel group PG can be increased.
因此,藉由本發明可改善有機發光層厚度的一致性,並同時改善有機發光層形成的效率。 Therefore, by the present invention, the uniformity of the thickness of the organic light-emitting layer can be improved, and at the same time, the efficiency of formation of the organic light-emitting layer can be improved.
此部分將與每一個像素區域皆形成有堤岸的次佳實施例來加以比較。 This section will be compared to a sub-optimal embodiment in which each pixel region is formed with a bank.
圖9係顯示次佳實施例之OLED的平面圖,圖10係沿著圖9中X-X線所截取的剖面圖。 Figure 9 is a plan view showing an OLED of a sub-optimal embodiment, and Figure 10 is a cross-sectional view taken along line X-X of Figure 9.
在次佳實施例中,由於在每一縱行上之相鄰像素區域間皆形成有堤岸450,每一個第一至第三有機發光層470a、470b、470c係對應於每一個像素區域而形成。 In the second preferred embodiment, since the banks 450 are formed between adjacent pixel regions on each of the wales, each of the first to third organic light-emitting layers 470a, 470b, and 470c is formed corresponding to each of the pixel regions. .
與本實施例相比較,次佳實施例的OLED在每一縱行上有較多的堤岸圖案,因此,在像素區域中所形成每一個有機發光層的單一區域及其面積就變小了。 Compared with the present embodiment, the OLED of the less preferred embodiment has more bank patterns on each of the wales, and therefore, a single region of each of the organic light-emitting layers formed in the pixel region and its area become smaller.
因此,有機發光層厚度分佈型態係產生於每一個像素區域中。換句話說,於接近堤岸450之有機發光層厚度高於像素區域中有機發光層厚度的此種分佈型態,係產生於每一個像素區域中。 Therefore, the organic light emitting layer thickness distribution pattern is generated in each of the pixel regions. In other words, such a distribution pattern in which the thickness of the organic light-emitting layer close to the bank 450 is higher than the thickness of the organic light-emitting layer in the pixel region is generated in each of the pixel regions.
相反地,在本實施例中,有機發光層厚度分佈型態係產生於每一個由複數個像素區域所組成的像素群中。因此,相較於次佳實施例,本發明可大幅改善有機發光層之厚度一致性。 In contrast, in the present embodiment, the thickness distribution pattern of the organic light-emitting layer is generated in each pixel group composed of a plurality of pixel regions. Therefore, the present invention can greatly improve the thickness uniformity of the organic light-emitting layer compared to the sub-optimal embodiment.
此外,就通過一噴頭500的噴嘴510噴出有機發光材料溶液部分而言,在次佳實施例中,噴嘴510必須對每一個像素區域噴出,因此,位於對應像素區域的噴嘴510會被使用到,但位於像素區域間的噴嘴510a就不會被使用,因而使噴嘴510之使用效率降低。再一方面,被使用的噴嘴510被限制,使得噴出的溶液並非所需的數量,因此可能發生斑點缺陷。 Further, in the case where the organic light-emitting material solution portion is ejected through the nozzle 510 of a shower head 500, in the second preferred embodiment, the nozzle 510 must be ejected for each pixel region, and therefore, the nozzle 510 located in the corresponding pixel region is used. However, the nozzle 510a located between the pixel regions is not used, so that the use efficiency of the nozzle 510 is lowered. On the other hand, the nozzle 510 to be used is limited such that the discharged solution is not the required amount, and thus speckle defects may occur.
相反地,在本實施例中,噴出係針對每一個像素群,因此相較於次佳實施例,被使用到的噴嘴510數增加,而未使用到的噴嘴510a數則減少。因 此,使噴嘴510之使用效率增加,且能噴出所需數量的溶液,因而避免了斑點缺陷。 Conversely, in the present embodiment, the ejection is for each pixel group, so the number of nozzles 510 used is increased compared to the less preferred embodiment, and the number of unused nozzles 510a is reduced. because This increases the efficiency of use of the nozzle 510 and allows the desired amount of solution to be ejected, thereby avoiding spot defects.
此外,在本實施例中,為了使同一像素群PG中相鄰像素區域中的第一電極320保持絕緣,可形成一絕緣圖案340。該絕緣圖案340可由一無機絕緣材料形成,例如:氧化矽(silicon oxide)、氮化矽(silicon nitride)。絕緣圖案340可形成於相鄰的第一電極320間並覆蓋第一電極320的邊緣部分。此外,絕緣圖案340亦可形成於橫列上相鄰的第一電極320彼此間。 Further, in the present embodiment, in order to keep the first electrode 320 in the adjacent pixel region in the same pixel group PG insulated, an insulating pattern 340 may be formed. The insulating pattern 340 may be formed of an inorganic insulating material such as silicon oxide or silicon nitride. The insulating pattern 340 may be formed between the adjacent first electrodes 320 and cover an edge portion of the first electrode 320. In addition, the insulating patterns 340 may also be formed between the adjacent first electrodes 320 in the course.
此外,第一、第二實施例中的型態可應用到本實施例的OLED中。例如:於本實施例中,電源線可與橫列方向上的閘極線平行設置。藉此,有機發光層的厚度一致性可進一步被改善。 Further, the patterns in the first and second embodiments can be applied to the OLED of the present embodiment. For example, in this embodiment, the power supply line can be disposed in parallel with the gate line in the course direction. Thereby, the thickness uniformity of the organic light-emitting layer can be further improved.
另一方面,相關習知技術的型態亦可應用到本實施例的OLED中。換句話說,於本實施例中,電源線可以縱向方式設置。於此種情形下,由於堤岸350係依據像素群PG設置,相較於習知技術,有機發光層的厚度一致性可被改善。 On the other hand, the type of the related art can also be applied to the OLED of the present embodiment. In other words, in the present embodiment, the power cord can be disposed in a longitudinal manner. In this case, since the bank 350 is disposed in accordance with the pixel group PG, the thickness uniformity of the organic light-emitting layer can be improved as compared with the conventional technique.
實施例4 Example 4
圖11係顯示本發明第四實施例之OLED的平面圖,圖12係沿著圖11中XII-VII線所截取的剖面圖。 Figure 11 is a plan view showing an OLED of a fourth embodiment of the present invention, and Figure 12 is a cross-sectional view taken along line XII-VII of Figure 11.
第四實施例的OLED與第一、第二實施例或第三實施例者相似,但在本實施例中,進一步描述在同一縱行的像素區域發射相同顏色的結構。 The OLED of the fourth embodiment is similar to that of the first, second embodiment or the third embodiment, but in the present embodiment, a structure in which the same color is emitted in the pixel region of the same wales is further described.
與第一、第二實施例或第三實施例相似的說明部分在此省略,而為了方便解釋,圖中亦未顯示閘極線、資料線與電源線等。 Descriptions similar to those of the first, second, or third embodiments are omitted herein, and for convenience of explanation, gate lines, data lines, power lines, and the like are not shown.
在本實施例的OLED中,發射相同顏色的像素區域係設置在同一縱行上。例如:位於第一縱行的第一像素區域P1發射紅光,位於第二縱行的第二像素區域P2發射綠光,而位於第三縱行的第三像素區域P3發射藍光。第一像素區域P1、第二像素區域P2與第三像素區域P3在每一橫列上輪流設置。 In the OLED of the present embodiment, pixel regions emitting the same color are disposed on the same wales. For example, the first pixel region P1 located in the first wales emits red light, the second pixel region P2 located in the second wales emits green light, and the third pixel region P3 located in the third wales emits blue light. The first pixel region P1, the second pixel region P2, and the third pixel region P3 are alternately disposed on each of the courses.
一堤岸550可形成於每一橫列上相鄰之像素區域之間。 A bank 550 can be formed between adjacent pixel regions on each of the courses.
於本實施例中,每一縱行上相鄰像素區域間的堤岸550可形成一階梯狀結構。 In this embodiment, the bank 550 between adjacent pixel regions on each of the wales may form a stepped structure.
圖中係以第一像素區域P1為例做說明。位於兩個相鄰第一像素區域P1間之堤岸550包括第一部分551與第二部分552,第二部分552位於第一部分551縱向方向上的二側。第二部分552的厚度小於第一部分551。 In the figure, the first pixel region P1 is taken as an example for illustration. The bank 550 located between two adjacent first pixel regions P1 includes a first portion 551 and a second portion 552, and the second portion 552 is located on both sides in the longitudinal direction of the first portion 551. The thickness of the second portion 552 is less than the first portion 551.
藉此,第一部分551具向上凸起的結構,使第二部分552的厚度較小,讓堤岸550於第一像素區域P1中縱向方向二側形成階梯狀結構。 Thereby, the first portion 551 has an upwardly convex structure such that the thickness of the second portion 552 is small, so that the bank 550 forms a stepped structure on both sides in the longitudinal direction of the first pixel region P1.
當堤岸550具有階梯狀結構時,第一像素區域P1中的第一有機發光層570a可進一步延伸覆蓋在縱向方向上位於第一像素區域P1二側的第二部分552,因此,於第一像素區域P1中形成第一有機發光層570a的區域可在縱向方向上擴張。 When the bank 550 has a stepped structure, the first organic light-emitting layer 570a in the first pixel region P1 may further extend to cover the second portion 552 located on both sides of the first pixel region P1 in the longitudinal direction, and thus, in the first pixel The region in which the first organic light-emitting layer 570a is formed in the region P1 may be expanded in the longitudinal direction.
因此,相較於未使用階梯狀構造堤岸的情形,可使用於形成有機發光層之單位區域增加,因此,有機發光層厚度單一性的問題也可獲得改善。 Therefore, the unit area for forming the organic light-emitting layer can be increased as compared with the case where the stepped structure bank is not used, and therefore, the problem of the single thickness of the organic light-emitting layer can be improved.
此外,第一、第二實施例中之型態可應用到本實施例的OLED中。例如:於本實施例中,電源線可與橫列方向上的閘極線平行設置。藉此,有機發光層的厚度一致性可被進一步改善。 Further, the patterns in the first and second embodiments can be applied to the OLED of the present embodiment. For example, in this embodiment, the power supply line can be disposed in parallel with the gate line in the course direction. Thereby, the thickness uniformity of the organic light-emitting layer can be further improved.
另一方面,相關習知技術的型態亦可應用到本實施例的OLED中。換句話說,於本實施例中,電源線可以縱向方式設置。於此種情形下,由於堤岸550形成有階梯狀結構,相較於習知技術,有機發光層的厚度一致性可被改善。 On the other hand, the type of the related art can also be applied to the OLED of the present embodiment. In other words, in the present embodiment, the power cord can be disposed in a longitudinal manner. In this case, since the bank 550 is formed with a stepped structure, the thickness uniformity of the organic light-emitting layer can be improved as compared with the prior art.
任何熟習此技藝者,在不脫離本發明之精神和範圍內,當可在本發明之顯示裝置中做些許更動與潤飾,因此本發明之保護範圍包括該些更動與潤飾,並以後附之申請專利範圍所界定者與其均等物為準。 Any person skilled in the art can make some changes and retouching in the display device of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention includes such changes and retouching, and the application attached later The definition of the scope of patents and their equivalents shall prevail.
本發明主張分別於2015年12月30日與2016年12月1日申請的韓國發明專利申請第10-2015-0189787號與第10-2016-0162704號的優先權,該等韓國發明專利申請案的全部內容均援用於本案中。 The present invention claims the priority of Korean Invention Patent Application No. 10-2015-0189787 and No. 10-2016-0162704, filed on Dec. 30, 2015 and December 1, 2016, respectively. All contents are used in this case.
101‧‧‧基板 101‧‧‧Substrate
113‧‧‧電源線 113‧‧‧Power cord
114‧‧‧閘極線 114‧‧‧ gate line
115‧‧‧資料線 115‧‧‧Information line
120‧‧‧第一電極 120‧‧‧first electrode
B1‧‧‧邊界區域/第一邊界區域 B1‧‧‧Boundary Area/First Boundary Area
B2‧‧‧邊界區域/第二邊界區域 B2‧‧‧Boundary Area/Second Boundary Area
P1‧‧‧第一像素區域 P1‧‧‧first pixel area
P2‧‧‧第二像素區域 P2‧‧‧second pixel area
P3‧‧‧第三像素區域 P3‧‧‧ third pixel area
Claims (31)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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KR20150189787 | 2015-12-30 | ||
??10-2015-0189787 | 2015-12-30 | ||
KR1020160162704A KR20170080459A (en) | 2015-12-30 | 2016-12-01 | Organic light emitting diode display device |
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KR102513840B1 (en) * | 2017-11-15 | 2023-03-23 | 엘지디스플레이 주식회사 | Display panel |
KR102513383B1 (en) * | 2017-12-05 | 2023-03-22 | 엘지디스플레이 주식회사 | Electroluminescent Display Device |
CN108598140A (en) * | 2018-06-26 | 2018-09-28 | 上海天马微电子有限公司 | Display panel, preparation method of display panel and display device |
TWI688933B (en) * | 2018-07-16 | 2020-03-21 | 友達光電股份有限公司 | Display device |
CN108873526B (en) * | 2018-07-19 | 2021-10-26 | 京东方科技集团股份有限公司 | Array substrate, manufacturing method thereof and display device |
CN110767675B (en) * | 2018-08-06 | 2022-06-17 | 云谷(固安)科技有限公司 | Display panel, display screen and display terminal |
CN110421969B (en) * | 2018-09-19 | 2021-02-12 | 广东聚华印刷显示技术有限公司 | Ink filling element carrier, control method and device thereof, and computer equipment |
CN110071159B (en) * | 2019-04-30 | 2021-07-06 | 深圳市华星光电半导体显示技术有限公司 | Pixel electrode structure and manufacturing method thereof |
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- 2016-12-23 GB GB1913164.8A patent/GB2575195B/en active Active
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TWI624053B (en) | 2018-05-11 |
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GB201913164D0 (en) | 2019-10-30 |
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GB2575194B (en) | 2020-08-12 |
CN206584932U (en) | 2017-10-24 |
GB2575195A (en) | 2020-01-01 |
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