TWI228382B - Organic flat light-emitting display and its manufacturing process - Google Patents

Abstract

There is provided a visual pixel definition reduce resistance matrix (VPDRRM) organic flat light emitting display. A metal matrix pattern is provided around the anode pattern layer of the organic flat light-emitting display. The metal matrix pattern can be disposed above the edge of the anode pattern layer, at the side edge of the anode pattern layer, or to simultaneously cover the top edge and side edge of the anode pattern layer. Furthermore, the metal matrix pattern is made by material with high electric conductivity and reflectivity, such as gold, silver, aluminum, copper and chromium.

Description

Case No. 9310R774 1228382

—A Amendment V. Explanation of the invention (1) [Technical field to which the invention belongs] = 'X Ming is related to an organic flat light-emitting display and its manufacturing process, and in particular, it is related to a visible daylight definition reduction impedance matrix (Vlsual Pixel Definition Reduce p ^

λ ^.. ^ Kesistance Matrix (YPDRRM) in organic flat light-emitting display applications. [Previous technology] With portable electronic products such as Feng She, personal recognition of JL KK T mobile phones, digital cameras or personal digital

Assistant's promotion, flat display (F flat display mainly includes liquid crystal display J = can also: ff to two and organic electro-active display, etc., currently compared to :, the plasma will not shine itself will not light, you need to install a back; f The liquid crystal display of Jin has adverse effects due to the liquid crystal Λ. On the other hand, the weight, volume and cost of the country ’s LCD can be increased in 1878. In two: the organic light emitting diode was first published. In 1990, the University of Cambridge in the United Kingdom announced the active research and development of materials, properties and phases of polymer light-emitting layers. Therefore, organic electromechanical displays have self-luminous f, p:! Because of its advantages, it is expected that the first picture of the mainstream flat-panel display and wide viewing angle is _f. The cross section of the organic light-emitting diode element main 2 5 diode element 10 is on the glass substrate 100. The upper part contains a glass substrate 100, an anode pattern layer 120 and a ττ 1 alder layer 120, mainly located at

^ L E D Emitting Multi-layered Mask)] j n -h r \ J

The risk on the ED light-emitting layer 140 is 彳 〇〇night, 口, 140, located at 0L θ 22, and located at the anode pattern layer 12〇

Page 5 1228382 V. Description of the invention

As an insulating area for isolation, the LED light emitting multilayer structure 140 includes a hole-transporting layer (HTL 42, a light-emitting material layer (EML) 144, and an electron-transporting layer (ETL) 146) from bottom to top. After the current is passed through the anode pattern layer I "and the cathode layer 1 2 2, the electron holes are combined to emit light through the light-emitting material layer (EML) i4j via the electron-transport layers (ETL, M46 and hole-transport layer (HTL) 142). Defining the area of daylight and avoiding the short circuit between each daylight (defined by the anode pattern layer 120), between the anode pattern layer 120 and the insulation area 1 60. The side of the element in the sectional view of the evening team is resistant. The work function rate of the body element, as shown in the large resistance anode diagram, luminous efficiency, diagram A, is another conventional organic light emitting diode element 10, and the organic light emitting diode element 10 and the first diagram There are phases, and therefore, similar component numbers are used, and a metal wire 1 80 is provided on the fourth side of the anode pattern layer i 2 〇§ to reduce the anode pattern layer i 2 〇 The figure B shows' the metal wire 18 0 is distributed in a strip above the organic service 1 10. Because The electrode pattern layer 1 2 0 usually has a higher work function to increase the hole production. Indium tin oxide (IT0) materials can be used, so it will cause resistance in summer and affect the luminous efficiency. The metal wire 180 can be used. The material is smaller than the case layer 120 to reduce the overall impedance of the anode, and the rate of lactation and drought. A few, the one shown in Figure 2 is a view of another conventional organic light emitting diode element, the organic light emitting diode Element 10 has a cross-section element of 10 as shown in the first figure. Therefore, similar element numbers are used. In order to prevent the aperture ratio of the day element area from being affected by similar carriers, as shown in the figure, the anode implantation and 1 Metal wires 1 8 0 are formed on both sides of 2 〇 to prevent shadowing due to the left entry of the carrier-supported case layer 1228382 __ Case No. 93106774_year month__ V. Description of the invention (3) Opening of the area Rate 'and further improve the luminous efficiency. However, in the above-mentioned conventional technologies, it is not possible to achieve both the effective reduction of impedance and the definition of the luminous area of the daylight, and can reduce the mutual interaction between the luminescent material layers (EML) of different colors. Interference [Summary of the invention] Therefore, an object of the present invention is to provide an organic flat light emitting display using a visual pixel definition reduce resistance matrix (VPDRRM), in which a metal matrix pattern can effectively reduce the impedance and define the visible The light emitting area of the day element can also reduce the mutual interference between the different color light emitting material layers (EML). Another method is clear. The cost of the impedance indicator can be in place or the pattern of silver or the same pattern can be used. The side of the moment production layer. The definition of the display is to reduce the side luminescence of the matrix layer. The metal moment can be made of gold. The purpose of the anode pattern is to reduce the shadow money. The purpose is to provide the above organic plane. The photoluminescence array organic anode map covers the above-mentioned purpose when the anode is used in the anode, and copper and the metal organic array are exposed above the metal edge. The present invention provides a visible day-light flat display, which mainly provides a metal matrix pattern around the organic flat layer Above the edge of the gold pattern layer, a bit The anode layer on the anode patterns patterned edge and the side edges. Furthermore, it is made of materials with high electrical coefficient and reflectivity, such as chromium. For the purposes described, the present invention provides a process for producing a visible daylight flat light-emitting display, which can use a micro-matrix pattern and surround and / or a side of a metal matrix pattern.

Page 7 Case No. 93106774 1228382 Amendment

V. Description of the Invention (4) [Embodiment] Referring to FIG. 4A, it is a σ diagram of the reduced impedance matrix organic flat light-emitting display 2 according to the first preferred embodiment of the present invention. The impedance reduction matrix organic planar light-emitting display device mainly includes a glass substrate 200, which is predetermined on the glass substrate 2000: an anode pattern layer 220, and an optical multi-layer structure 240, which is mainly located on the anode pattern layer 220. The cathode layer 2 2 2X on the LED light emitting layer 24 0 and the isolation layer 2 g as an isolation layer positioned between the anode pattern layer 2 2 0. Fuzhong LED multi-layer structure 240 includes bottom-to-top hole transport layer (HTL) 242, luminescent material layer (EML) 244, and electron wheel layer (ETL). The anode pattern layer 2 2 0 and the cathode After the layer 2 2 2 is energized, the electron holes are combined to emit light through the electron transport layer (ETL) 246 and the hole transfer wheel layer (HTf) in the luminescent material layer (EML) 244. In order to avoid daylight between the various daylight elements The open area ratio of the element area and the short circuit problem form an insulating region 2 6 0 between the anode pattern layer 2 2 0. “Plane ^ As shown in Figure 4A, the visible day element definition reduces the impedance matrix organic matrix diagram i display 20 The metal visible around the upper side of the anode pattern layer 2 2 0 = 1280 'Therefore, the area of the metal wire distributed around the pixel (that is, the light iw meaning reduced impedance matrix); can be used to define the visible day element of the wire; = : In other words, this (opaque) metal is distributed around the day element to avoid # ί (the pixel can be defined to reduce the impedance matrix); the function is not only to use the organic light source around the area to overflow the non-display area around, and then Distribution of the moment of impedance Transmittance) metal wire area (that is, the haze can be reduced depending on the definition of daylight); it can reduce the reflection interference of external light sources on OLED elements.

1228382 _Case No. 93106774_ Year Month Date__ V. Description of the invention (5) In addition, this (opaque) metal wire area (which can be defined by the pixel to reduce the impedance matrix) is distributed around the pixel; it is used to define the visible Day light emission area •, can avoid the mutual interference of the light emission of different EL colors (for example: when used in the full color RGBS ideby Side process, it can prevent the mutual interference of different colors). In the visible flat element-defining reduced-resistance matrix organic flat light-emitting display 20 shown in FIG. 4A, three light-emitting material layers (EML) 244 may emit different colors, for example, three colors of red, blue, and green (RBG) may be emitted, respectively. Reach full-color applications. The metal matrix pattern can avoid mutual interference of light emission of different EL colors, and achieve better color resolution. FIG. 4B is a cross-sectional view of an organic planar light-emitting display 20 with a reduced impedance matrix according to the second preferred embodiment of the present invention. Similar to the first preferred embodiment of the present invention shown in FIG. 4A, the visible daylight definition reduced impedance matrix organic flat light-emitting display 20 has an anode. The metal matrix pattern 2 8 0 around the pattern layer 2 2 0. Therefore, the metal matrix pattern (that is, the impedance matrix can be reduced according to the definition of the day element) distributed around the day element can be used to define the luminous area of the visible day element. According to this specific example, it is possible to further prevent outside light from entering the organic flat light-emitting display 200. As shown in FIG. A cross-sectional view of 0. The visible pixels define an organic flat light-emitting display with a reduced impedance matrix.

1228382 _Case No. 93106774_ Year Month Date__ V. Description of the invention (6) Components and the first preferred embodiment of the present invention shown in Figure 4A, the visible daylight definition of the reduced impedance matrix organic flat light-emitting display 2 is similar However, the visible daylight-defining reduced-resistance-matrix organic planar light-emitting display 20 has a metal matrix pattern 280 around the anode pattern layer 22 0 and has a narrow lower side portion 2 8 2. As shown in FIG. 4D, it is a cross-sectional view of an organic flat light-emitting display 20 for reducing the impedance matrix according to the visual pixel definition of the fourth preferred embodiment of the present invention. Similar to the first preferred embodiment of the present invention shown in FIG. 4A, the visible daylight definition reduced impedance matrix organic flat light-emitting display 20 has an anode. The metal matrix pattern 2 8 0 around the pattern layer 2 2 0 has a tapered lower side portion 2 8 2. The material of this metal matrix pattern (that is, the impedance reduction matrix defined by the day element) can be made of materials with high conductivity and reflectivity; for example: gold, silver, aluminum, copper, and chromium. Referring to FIG. 4E, a top view of an organic flat light-emitting display 20 with a reduced impedance matrix according to the present invention can be defined. Since the metal matrix pattern 2 8 0 is surrounded around the anode pattern layer 2 2 0, the impedance can be effectively reduced. Define the luminous area of visible daylight, and can reduce the mutual interference between different color luminescent material layers (EML). Refer to the fifth A-F diagrams for a flow chart of the organic planar light-emitting display 20 for reducing the visible matrices according to the first preferred embodiment of the present invention, including the following steps: Step S 1 0 0: Figure A, provision of a glass substrate 2 0 0 and

Page 101228382 _Case No. 93106774_Year Month and Date__ V. Description of the invention (7) Wash the glass substrate 2 0 0 with chemicals such as Detergent and deionized water; then use an apparatus such as Splitter to grow an ITO film 2 2 0 was used as the anode. Step S102: Referring to FIG. 5B, a metal thin film 280 is grown on the obtained structure by using a machine such as a Sputter or a plating process. Step S 104: Referring to FIG. 5C, a metal matrix pattern is fabricated on the metal thin film 280 using a lithography etching process. Step S 106: refer to the fifth D drawing, and use the lithography etching process to make an ITO film 2 2 0 pattern. Step S108: refer to the fifth E drawing, first apply a photoresist such as polyimide, and then use the lithography process to make Insulation area 2 6 0. Step S 1 1 0: Referring to FIG. 5F, using the evaporation process, a t-hole transport layer (HTL) 242, a luminescent material layer (EML) 244, an electron transport layer (ETL) 24 6 and a cathode layer 2 2 2 are grown respectively. . • Refer to Figures 6A to 6F for a flowchart of making an organic planar light-emitting display 2 of a reduced impedance matrix with visible daylight definition according to another preferred embodiment of the present invention, which includes the following steps: Step S 2 0 0: In Figure 6A, a glass substrate 2000 is prepared, and the glass substrate 200 is cleaned with chemicals such as Detergent and deionized water. Then, an I TO film 2 2 0 is grown using a machine such as Spu 11 er as an anode. Step S2 0 2: Referring to FIG. 6B, a lithographic etching process is used to fabricate a 2 2 0 pattern of the ITO film. Step S204: Referring to FIG. 6C, a metal thin film is grown on the obtained structure by using a machine such as Sputter or a plating process. Step S 2 0 6: Referring to the sixth diagram D, the photolithography etching process is used for

1228382 _ Case No. 93106774_ Year Month Date__ V. Description of the invention (8) The metal matrix 2 8 0 is used to make a metal matrix pattern. Step S208: Referring to the sixth figure E, firstly apply a photoresist of a material such as polyimide, and then use a lithography process to produce an insulating region 260. Step S 2 1 0: See FIG. 6F, and use the evaporation process to grow a hole transport layer (HTL) 2 4 2, a light emitting material layer (EML) 244, an electron transport layer (ETL) 24 6 and a cathode layer 2 twenty two. Among them, the PRDDM element structure manufactured by the manufacturing process shown in Figure 6; because the metal matrix pattern can be extended to contact the glass substrate, the effect of reducing the resistance of the electrode lead and causing the 0LED element light source to emit from the I TO display surface The manufacturing process shown in the fifth figure is preferred. To sum up, the organic flat light-emitting display of the present invention has the following advantages: 1. The metal matrix pattern can contact the sides or sides of the transparent electrode such as I TO, and is arranged in a matrix, so the impedance of the electrode lead can be reduced. And used to define the luminous area of visible daylight. 2. The metal matrix pattern can prevent the organic light source from overflowing to the surrounding non-display area and reduce the reflection interference of the external light source to the 0LED element. 3. The metal matrix pattern can avoid the mutual interference of the luminescence of different EL colors (for example: when used in the full-color RGB Side by Side process, it can prevent the mutual interference of different colors). 4. Using this opaque metal matrix pattern can increase the color purification and grayscale efficiency of the light source and increase the clarity of the viewing angle. The organic flat light-emitting display of the present invention has a metal matrix pattern, which can effectively reduce the impedance and define the light-emitting area of visible pixels, and can reduce

Page 128382 _Case No. 93106774_ Year Month Date__ V. Description of the invention (9) The mutual interference between different colors of light-emitting material layers (EML) is indeed industrially advanced, and the structure of the invention is not seen in Existing full-color organic electroluminescent display, therefore also meets the requirements of novelty regulations.

Page 13 1228382 _Case No. 93106774_ Year Modification _ Brief description of the drawings (A) Schematic part The first picture shows a cross-sectional view of a conventional organic light emitting diode element. The second figure A is a cross-sectional view of another conventional organic light emitting diode element. As. Process view can be used to form the top view of the example device element. The display element is a body element with a light diode. A light emitting diode is better than a light emitting diode. There is a moment in this graph, the evidence is based on A, Xi Yiyi is the second one, and the second one is less. The second one is the first one, and the other is the first one. From day to day B Figure A A 2345th No. 1st light hair board machine has a glass and glass. 〇 This 〇 According to 1 according to-the other yuan. Number body symbol. F schedule table two diagrams of the six-generation optical path of the first process to send to the machine 1 machine A 3 knows the six or two exercises ο '([1 pieces of body pole 1 2 0 anode pattern layer 1 4 0 light-emitting multilayer structure 1 4 4 Luminous material layer 1 6 0 Insulation area 1 2 2 Cathode layer 1 4 2 Hole transport layer 1 4 6 Electron transport layer 1 80 Metal wire

Light U light generator Hair with this ο [2 polar body element 2 0 0 glass substrate

Page 14 1228382

Page 15

Claims (1)

1228382 _Case No. 93106774_ Modification of Year of the Month_ 6. Application for Patent Scope 1. An organic flat light-emitting display with a visible pixel definition to reduce the impedance matrix, comprising: a glass substrate; an anode pattern layer with a predetermined pattern on the glass substrate; 〇LED light emitting multilayer structure on the anode pattern layer; located between the anode pattern layers as an insulating area for isolation; and a metal matrix pattern around the anode pattern layer. 2. The visible daylight-defining matrix organic flat light-emitting display as defined in item 1 of the scope of patent application, wherein the metal matrix pattern is positioned above the edge of the anode pattern layer. 3. The visible daylight-defining matrix organic flat light-emitting display according to the definition of the visible day element in the scope of the patent application, wherein the metal matrix pattern is located at the side edge of the anode pattern layer. ‘4. The visible daylight-defining matrix organic flat light-emitting display as defined in item 1 of the scope of patent application, wherein the metal matrix pattern is located on the edge of the anode pattern layer and covers the upper edge and side edges of the anode pattern layer. 5. As the visible daylight definition of item 4 in the scope of the patent application, the impedance-reduced-matrix organic planar light-emitting display, wherein the metal matrix pattern is tapered (t a p r r d) at the side edge portion of the anode pattern layer. 6. As the visible daylight definition of item 1 of the scope of patent application, the impedance reduction matrix organic flat light-emitting display, wherein the anode is made of I TO. 7. The visible daylight-defining matrix organic flat light-emitting display as defined in the first item of the patent application scope, wherein the OLED light emitting multilayer structure includes a bottom-up hole transport layer (HTL), a light-emitting material layer (EML), and electrons. Page 16 1228382 _ Case No. 93106774 _ Month and Day __ VI. Patent Application Scope Transmission Layer (ETL). 8. The visible pixels as defined in the scope of patent application No. 1 define a reduced-resistance matrix organic flat light-emitting display, in which the metal matrix pattern is made of a material with high conductivity and reflectivity. 9. The visible daylight definition as described in item 8 of the patent application, which reduces the impedance. An organic flat light-emitting matrix display, in which the metal matrix pattern is made of gold, silver, aluminum, copper, and chromium. 10. The impedance OLED organic flat light-emitting display according to the visible daylight definition of item 8 in the scope of patent application, wherein the OLED multi-layer structure can be monochromatic or multicolor. 1 1. A method for manufacturing an organic planar light emitting display device with a visible impedance-defining reduction matrix including the following steps: preparing a glass substrate and growing an anode layer film;-growing a metal film on the obtained structure; using a lithography etching process To make a metal matrix pattern on a metal thin film Page 17 1228382 Case No. 93106774 Date of Amendment 6. Scope of Patent Application The manufacturing method of an impedance matrix organic flat light-emitting display, wherein the metal matrix pattern is located at the side edge of the anode pattern layer. 14. The manufacturing method of an organic flat light-emitting display with a reduced impedance matrix as defined by the visible day element definition in item 11 of the scope of patent application, wherein the metal matrix pattern is located on the edge of the anode pattern layer and covers the upper edge and sides of the anode pattern layer edge. 15. The method for manufacturing an organic flat light-emitting display of an impedance matrix with a reduced visible pixel definition as described in item 14 of the scope of patent application, wherein the metal matrix pattern is tapered (t a p r e d) at the side edge portion of the anode pattern layer. 16. The method for manufacturing an organic flat light-emitting display with a reduced impedance matrix as described in item 11 of the patent application scope, wherein the anode is made of I TO. • 17. The manufacturing method of an organic planar light-emitting display with a reduced impedance matrix as defined by the visible daylight definition of item 11 in the scope of patent application, wherein the OLED multi-layer structure includes a bottom-up hole transport layer (HTL) and a light-emitting material layer (EML) and electron transport layer (ETL). 18. The manufacturing method of the organic matrix light-emitting display of the impedance matrix is reduced according to the visible daylight definition of item 11 in the scope of patent application, wherein the metal matrix pattern is made of a material with high conductivity and high reflectance. 19. The manufacturing method of the organic matrix light-emitting display of the impedance matrix is reduced according to the visible daylight definition of item 18 in the scope of patent application, wherein the metal matrix pattern is made of gold, silver, aluminum, copper, and chromium. 20, if the definition of visible daylight in item 18 of the scope of patent application is reduced Page 18 1228382 _Case No. 93106774_ Year Month Date__ VI. Patent Application Method Manufacturing method of an impedance matrix organic flat light-emitting display, wherein the OLED multi-layer structure can be single-color or multi-color. 2 1. A method for manufacturing an organic flat light-emitting display with a visible impedance-defining reduced-resistance matrix, including the following steps: preparing a glass substrate and growing an anode layer film; using a lithographic etching process to produce an anode pattern; A metal thin film; a lithographic etching process is used to fabricate a metal matrix pattern on the metal thin film, and the metal matrix pattern is a pattern surrounding the anode pattern layer; a lithographic process is used to fabricate an insulating region; and an LED multi-layered structure is fabricated. 22. The manufacturing method of the organic matrix light-emitting display of the impedance matrix is reduced according to the visible daylight definition of item 21 of the patent application, wherein the metal matrix pattern is positioned above the edge of the anode pattern layer. 23. The method for manufacturing an organic flat light-emitting display with an impedance matrix reduced in accordance with the definition of visible pixels in item 21 of the scope of patent application, wherein the metal matrix pattern is located at a side edge of the anode pattern layer. 24. The manufacturing method of an organic flat light-emitting display with a reduced impedance matrix according to the visible daylight definition of item 21 in the scope of patent application, wherein the metal matrix pattern is located on the edge of the anode pattern layer and covers the upper edge and sides of the anode pattern layer. edge. 25. A method for manufacturing an organic flat light-emitting display of an impedance matrix, such as a reduction in visible daylight definition as described in item 24 of the scope of patent application, wherein the metal matrix pattern is tapered (t a p e r e d) at the side edge portion of the anode pattern layer Page 19 1228382 _ Case No. 93106774 _ Month and Day __ Sixth, the scope of patent application. 26. The method for manufacturing an organic flat light-emitting display with a reduced impedance matrix as described in item 21 of the scope of patent application, wherein the anode is made of I T0. 27. The manufacturing method of an organic flat light-emitting display with a reduced impedance matrix as defined by the visible daylight definition of item 21 in the scope of patent application, wherein the OLED multi-layer structure includes a bottom-up hole transport layer (HTL) and a light-emitting material layer ( EML) and electron transport layer (ETL). 28. If the visible daylight definition of item 21 of the patent application scope is reduced, the manufacturing method of the impedance matrix organic flat light-emitting display, wherein the metal matrix pattern is made of a material with high conductivity and high reflectance. 29. If the visible daylight definition of item 28 in the scope of patent application is reduced, the manufacturing method of the impedance matrix organic flat light-emitting display, wherein the metal matrix pattern is made of gold, silver, aluminum, copper, and chromium. 30. A method for manufacturing an organic flat light-emitting display with a reduced impedance matrix such as the visible daylight definition of item 21 in the scope of patent application, wherein the OLED multi-layer light emitting structure may be single-color or multi-color. 31. The method for manufacturing an organic flat light-emitting display with a reduced impedance matrix as defined by the visible day element definition in item 21 of the patent application scope further includes the step of establishing an opaque and high reflectance cathode, which can be connected with the opaque and high reflectance cathode. The metal matrix pattern constitutes a three-dimensional shielding area so that light is emitted only by the anode. Page 20