DE112017004029T5 - LED MODULE AND METHOD FOR THE PRODUCTION THEREOF - Google Patents
LED MODULE AND METHOD FOR THE PRODUCTION THEREOF Download PDFInfo
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- DE112017004029T5 DE112017004029T5 DE112017004029.9T DE112017004029T DE112017004029T5 DE 112017004029 T5 DE112017004029 T5 DE 112017004029T5 DE 112017004029 T DE112017004029 T DE 112017004029T DE 112017004029 T5 DE112017004029 T5 DE 112017004029T5
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- led
- led chips
- chip
- substrate
- chips
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- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 2
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Abstract
Offenbart wird ein Verfahren zur Herstellung eines LED-Moduls. Das Verfahren beinhaltet: Aufbau eines Chip-on-Träger mit einem Chip-Halter mit einer horizontalen Bindeebene und einer Vielzahl von LED-Chips, in denen Elektrodenpads mit der Bindeebene des Chip-Halters verbunden sind; und Übertragen der Vielzahl von LED-Chips in einer vorbestimmten Anordnung von dem Chip-Halter auf ein Substrat durch Transferdruck. Der Transferdruck beinhaltet: primär abschnittsweises Belichten eines Transferbandes, um die Klebkraft des Transferbandes so zu reduzieren, dass in vorbestimmten Abständen auf dem Transferband Klebeflächen gebildet werden; und Druckbeaufschlagen des Transferbandes gegen die LED-Chips auf dem Chiphalter, um die LED-Chips an den entsprechenden Klebeflächen des Transferbandes anzubringen, und Lösen der Elektrodenpads der LED-Chips vom Chiphalter, um die Chips aufzunehmen. Disclosed is a method of manufacturing an LED module. The method includes: building a chip-on-carrier with a chip holder having a horizontal binding plane and a plurality of LED chips, in which electrode pads are connected to the binding plane of the chip holder; and transferring the plurality of LED chips in a predetermined arrangement from the chip holder to a substrate by transfer printing. The transfer printing includes: exposing a transfer belt primarily in sections so as to reduce the adhesive force of the transfer belt so that adhesive surfaces are formed on the transfer belt at predetermined intervals; and pressurizing the transfer belt against the LED chips on the chip holder to attach the LED chips to the respective adhesive surfaces of the transfer belt, and releasing the electrode pads of the LED chips from the chip holder to receive the chips.
Description
Technisches GebietTechnical area
Die vorliegende Erfindung bezieht sich auf ein LED-Modul und ein Verfahren zu dessen Herstellung. Genauer gesagt, bezieht sich die vorliegende Erfindung auf ein Verfahren zur Herstellung eines LED-Moduls unter Verwendung von Transferdruck und Flip-Bonding.The present invention relates to an LED module and a method for its production. More specifically, the present invention relates to a method of manufacturing an LED module using transfer printing and flip-bonding.
Technischer HintergrundTechnical background
Vollfarbige LED-Displays, in denen LEDs, die Licht mit unterschiedlichen Wellenlängen emittieren, in Pixel gruppiert sind, wurden als potenzieller Ersatz für Displays mit LEDs als Hintergrundlichtquellen vorgeschlagen. Jedes Pixel besteht aus roten, grünen und blauen LEDs oder roten, grünen, blauen und weißen LEDs. In einer solchen LED-Anzeige werden rote, grüne und blaue LEDs in Paketen gefertigt und auf einem Substrat montiert. Aufgrund der großen Abstände zwischen den einzelnen LEDs der einzelnen Pixel ist eine qualitativ hochwertige Auflösung jedoch schwer zu erreichen. Pixel, die aus LED-Paketen bestehen, lassen sich nur schwer auf Mikro-LED-Displays anwenden, die in letzter Zeit viel Aufmerksamkeit erregt haben. Es wurden auch LED-Pixel-Einheiten vorgeschlagen, bei denen rote LEDs, grüne LEDs und blaue LEDs, die ein Pixel bilden, in einem Paket montiert sind. In einer solchen LED-Pixeleinheit ist der Abstand zwischen den benachbarten LEDs (d. h. Subpixeln) in einem Pixel klein, aber der Abstand zwischen den benachbarten Pixeln ist schwer zu reduzieren. Weiterhin kann es zu Lichtstörungen zwischen den roten, grünen und blauen LEDs kommen.Full-color LED displays, in which LEDs emitting light of different wavelengths are grouped in pixels, have been proposed as a potential replacement for displays with LEDs as background light sources. Each pixel consists of red, green and blue LEDs or red, green, blue and white LEDs. In such an LED display, red, green and blue LEDs are fabricated in packages and mounted on a substrate. However, due to the large distances between the individual LEDs of the individual pixels, a high-quality resolution is difficult to achieve. Pixels made up of LED packages are difficult to apply to micro LED displays that have received much attention lately. Also proposed are LED pixel units in which red LEDs, green LEDs and blue LEDs forming a pixel are mounted in a package. In such an LED pixel unit, the distance between the adjacent LEDs (i.e., sub-pixels) in one pixel is small, but the distance between the adjacent pixels is difficult to reduce. Furthermore, there may be light interference between the red, green and blue LEDs.
Um den Abstand zwischen den Pixeln zu verringern, haben die Erfinder versucht, ein LED-Anzeigemodul herzustellen, in dem Gruppen von LED-Chips, die jeweils rote LED, grüne LED und blaue LED-Chips beinhalten, in einer Matrix auf einem PCB-Substrat angeordnet sind. Es ist jedoch schwierig, die LED-Chips in vorgegebenen Höhen und Abständen auf dem mikrometergroßen Substrat zu montieren. Unterschiedliche Höhen und/oder Intervalle zwischen den auf dem Substrat montierten LED-Chips verschlechtern die Farbreproduzierbarkeit des LED-Anzeigemoduls. Das Drahtbonden ist für die elektrische Verbindung zwischen Elektrodenpads und den LED-Chips auf dem Substrat notwendig, aber es dauert mindestens zehn bis hunderte Stunden, um ein Produkt herzustellen. Insbesondere bei der Montage von Dutzenden bis Hunderten von LED-Chips auf dem Substrat sind einige der LED-Chips nicht genau an den gewünschten Positionen positioniert, was es unmöglich macht, ein entworfenes Lichtaustrittsmuster zu erreichen und zu erheblichen Farbabweichungen führt. Insbesondere Techniken zur Herstellung von LED-Anzeigemodulen einschließlich der Anordnung von Mikro-LEDs mit einer Größe von mehreren bis mehreren hundert Mikrometern auf einem Aktivmatrix(AM)-Substrat werden derzeit eingesetzt, sind aber bei der Herstellung von Anzeigemodulen mit hoher Präzision und guter Qualität auf Basis der konventionellen Chipmontagetechnik schwer anwendbar.In order to reduce the distance between the pixels, the inventors have tried to produce an LED display module in which groups of LED chips each including red LED, green LED and blue LED chip in a matrix on a PCB substrate are arranged. However, it is difficult to mount the LED chips at predetermined heights and distances on the micrometer-sized substrate. Different heights and / or intervals between the LED chips mounted on the substrate degrade the color reproducibility of the LED display module. Wire bonding is necessary for the electrical connection between electrode pads and the LED chips on the substrate, but it takes at least ten to hundreds of hours to produce a product. In particular, when mounting tens to hundreds of LED chips on the substrate, some of the LED chips are not positioned exactly at the desired positions, making it impossible to achieve a designed light emission pattern and resulting in significant color variations. In particular, techniques for fabricating LED display modules, including the placement of micro-LEDs of several to several hundred micrometers in size on an active matrix (AM) substrate, are currently in use, but are in the production of high precision, good quality display modules Difficult to apply based on conventional chip-mounting technology.
Offenbarung der ErfindungDisclosure of the invention
Technische AufgabeTechnical task
In diesem Zusammenhang kann eine Technik zur Übertragung von LED-Chips, die an bestimmten Positionen angeordnet sind, auf ein Substrat durch Total-Transferdruck eine Lösung für die Probleme im Stand der Technik darstellen. Obwohl LED-Chips zusammen mit den darüber liegenden Elektrodenpads jedoch im Total-Transferdruck auf ein Substrat übertragen und auf diesem angeordnet werden, ist ein zusätzlicher Prozess, wie beispielsweise das Drahtbonden, erforderlich. Die erhöhte Anzahl von Verarbeitungsschritten führt zu einem Anstieg der Herstellungskosten. Darüber hinaus ist die Ausrichtung der LED-Chips gestört, was zu einer erheblichen Qualitätsverschlechterung führt. Im Gegensatz dazu kann beim Transferdruck von flip-bonded LED-Chips mit nach unten gerichteten Elektrodenpads auf ein Substrat ein zusätzlicher Prozessschritt, wie z.B. das Drahtbonden, vermieden werden, so dass die Ausrichtung der LED-Chips nicht gestört wird. Darüber hinaus ermöglicht der Transferdruck eine Reihe von ausgewählten LED-Chips mit einer Größe von zehn bis hundert Mikrometern in einer gewünschten Anordnung.In this connection, a technique for transferring LED chips arranged at certain positions onto a substrate by total transfer printing can be a solution to the problems in the prior art. However, although LED chips along with the overlying electrode pads are transferred to and deposited on a substrate by total transfer pressure, an additional process, such as wire bonding, is required. The increased number of processing steps leads to an increase in manufacturing costs. In addition, the orientation of the LED chips is disturbed, resulting in a significant deterioration in quality. In contrast, in the transfer printing of flip-bonded LED chips having downwardly directed electrode pads onto a substrate, an additional process step, such as e.g. Wire bonding should be avoided so that the alignment of the LED chips is not disturbed. In addition, the transfer printing enables a number of selected LED chips of a size of ten to a hundred micrometers in a desired arrangement.
Technische LösungTechnical solution
Die vorliegende Erfindung ist daher darauf ausgerichtet, ein Verfahren zur Herstellung eines LED-Moduls bereitzustellen, indem LED-Chips aus einem Chip-Halter übertragen werden, der die LED-Chips in einer vorbestimmten Anordnung halten kann, ohne durch Transferdruck und anschließendes Flip-Bonden der LED-Chips auf dem Substrat auf diesem in Unordnung gebracht zu werden.The present invention is therefore directed to providing a method of manufacturing an LED module by transferring LED chips from a chip holder which can hold the LED chips in a predetermined arrangement without transfer printing and subsequent flip bonding of the LED chips on the substrate on this to be messed up.
Ein Verfahren zur Herstellung eines LED-Moduls gemäß einem Aspekt der vorliegeden Erfindung beinhaltet den Aufbau eines Chip-on-carrier mit einem Chip-Halter mit einer horizontalen Verbindungsebene und einer Vielzahl von LED-Chips, in denen Elektrodenpads mit der Verbindungsebene des Chip-Halters verbunden sind; und das Übertragen der Vielzahl von LED-Chips in einer vorbestimmten Anordnung von dem Chip-Halter auf ein Substrat durch Transferdruck, wobei der Transferdruck beinhaltet: primär abschnittsweise Belichten eines Transferbandes, um die Klebkraft des Transferbandes so zu reduzieren, dass in vorbestimmten Abständen auf dem Transferband Klebeflächen gebildet werden; und Druckbeaufschlagen des Transferbandes gegen die LED-Chips auf dem Chiphalter, um die LED-Chips an den entsprechenden Klebeflächen des Transferbandes zu befestigen, und Lösen der Elektrodenpads der LED-Chips vom Chiphalter, um die Chips aufzunehmen.A method of manufacturing an LED module according to an aspect of the present invention includes the structure of a chip-on-carrier having a chip holder having a horizontal connection plane and a plurality of LED chips in which electrode pads are connected to the connection plane of the chip holder are connected; and transferring the plurality of LED chips in a predetermined arrangement from the chip holder to a substrate by transfer printing, wherein the transfer printing includes: exposing a transfer belt primarily in sections to reduce the adhesive force of the transfer belt to be predetermined Distances are formed on the transfer tape adhesive surfaces; and pressurizing the transfer belt against the LED chips on the chip holder to fix the LED chips to the respective adhesive surfaces of the transfer belt, and releasing the electrode pads of the LED chips from the chip holder to receive the chips.
Gemäß einer Ausführungsform beinhaltet die primäre Belichtung das Belichten des Übertragungsbandes durch eine Fotomaske, die mit einer Vielzahl von lichtdurchlässigen Fenstern ausgebildet ist.In one embodiment, the primary exposure includes exposing the transfer belt through a photomask formed with a plurality of translucent windows.
Gemäß einer Ausführungsform beinhaltet das Verfahren ferner, nach der Chipaufnahme, das mit den LED-Chips befestigte Transferband sekundär freizulegen, um die Haftfestigkeit des Transferbandes als Ganzes zu schwächen, und die Vielzahl von LED-Chips vom Transferband zu platzieren, deren Haftfestigkeit insgesamt auf dem Substrat geschwächt ist.According to an embodiment, the method further includes, after the chip pick-up, secondarily exposing the transfer ribbon attached to the LED chips to weaken the adhesive strength of the transfer ribbon as a whole, and placing the plurality of LED chips from the transfer ribbon whose total adhesion on the transfer ribbon Substrate weakened.
Gemäß einer Ausführungsform beinhaltet die Chip-Aufnahme die Druckbeaufschlagung des Transferbandes gegen die auf den Chiphalter geklebten LED-Chips mit einer in eine Richtung rollenden Pickup-Rolle.In one embodiment, the chip receptacle includes pressurizing the transfer belt against the LED chips bonded to the chip holder with a unidirectional pickup roll.
Gemäß einer Ausführungsform beinhaltet die Platzierung die Druckbeaufschlagung der am Transferband befestigten LED-Chips gegen das Substrat mit einer Platzierungsrolle, so dass die Elektrodenpads der LED-Chips an Paaren von auf dem Substrat gebildeten Beulen befestigt sind.In one embodiment, the placement includes pressurizing the LED chips mounted on the transfer belt against the substrate with a placement roller such that the electrode pads of the LED chips are attached to pairs of bumps formed on the substrate.
Gemäß einer Ausführungsform ist die Klebekraft des Transferbandes während des Einbringens geringer als die Klebekraft eines Klebstoffs, der auf die beiden Erhebungspaare aufgetragen wird.According to one embodiment, the adhesive force of the transfer belt during insertion is less than the adhesive force of an adhesive which is applied to the two collection pairs.
Gemäß einer Ausführungsform beinhaltet die Chip-on-Carrier-Konstruktion das Vorbereiten eines Chip-Halters mit einer horizontalen Verbindungsebene, das Vorbereiten einer Vielzahl von LED-Chips und das Anbringen der LED-Chips an der Verbindungsebene, um eine oder mehrere LED-Chip-Anordnungen zu bilden, wobei das Vorbereiten einer Vielzahl von LED-Chips das Vorbereiten einer Vielzahl von LED-Chips beinhaltet, einschließlich nach unten verlaufender n-Elektrodenpads und p-Elektrodenpads, und die Chip-Anbringung das direkte Verbinden der n-Elektrodenpads und der p-Elektrodenpads mit der Verbindungsebene beinhaltet.According to one embodiment, the chip-on-carrier construction includes preparing a chip holder with a horizontal interconnect level, preparing a plurality of LED chips, and attaching the LED chips at the interconnect level to form one or more LED chip dies. Forming arrangements wherein preparing a plurality of LED chips includes preparing a plurality of LED chips, including down-facing n-electrode pads and p-electrode pads, and attaching the chips directly connecting the n-electrode pads and the p Electrode pads with the connection level includes.
Gemäß einer Ausführungsform beinhaltet die Chipbefestigung das Anbringen der Vielzahl von LED-Chips an der Verbindungsebene, so dass der Abstand in den LED-Chip-Arrays auf dem Chiphalter ein n-ntel (wobei n eine natürliche Zahl gleich oder größer als 1 ist) desjenigen in den durch den Transferdruck auf das Substrat übertragenen LED-Chip-Arrays beträgt, wobei der Abstand den horizontalen Abstand zwischen der Mitte eines LED-Chips und der Mitte des benachbarten LED-Chips darstellt.According to one embodiment, the die attach includes attaching the plurality of LED dies to the interconnection level so that the pitch in the LED die arrays on the die holder is one n-th (where n is a natural number equal to or greater than 1) of the one is in the transferred by the transfer pressure to the substrate LED chip arrays, wherein the distance represents the horizontal distance between the center of an LED chip and the center of the adjacent LED chip.
Ein LED-Modul gemäß einem weiteren Aspekt der vorliegenden Erfindung beinhaltet: eine Vielzahl von angeordneten LED-Chips, die von einem externen Chiphalter übertragen werden, wobei jeder der LED-Chips Elektrodenpads auf einer Seite davon und eine Ebene, die an einem Übertragungsband auf der anderen Seite davon befestigt ist, aufweist; und ein Substrat mit einer Vielzahl von Erhebungen, die an die Elektrodenpads flip-gebonded sind, wobei das Übertragungsband in freiliegende Bereiche und freiliegende Bereiche unterteilt ist, indem Primärlicht von außen auf die Seite gegenüber den LED-Chips bestrahlt wird und die LED-Chips an die freiliegenden Bereiche gebunden und aufgenommen werden.An LED module according to another aspect of the present invention includes: a plurality of arrayed LED chips transferred from an external chip holder, each of the LED chips having electrode pads on one side thereof and a plane attached to a transfer belt on the one attached to the other side thereof; and a substrate having a plurality of protrusions flip-bonded to the electrode pads, wherein the transfer belt is divided into exposed areas and exposed areas by irradiating primary light from outside to the side opposite to the LED chips and the LED chips the exposed areas are tied and picked up.
Gemäß einer Ausführungsform verliert das Transferband seine Haftkraft in den Klebebereichen durch von außen auf die den LED-Chips gegenüberliegende Seite eingestrahltes Sekundärlicht und wird von den LED-Chips gelöst.According to one embodiment, the transfer belt loses its adhesive force in the adhesive areas by the secondary light irradiated from the outside onto the side opposite the LED chips and is released from the LED chips.
Gemäß einer Ausführungsform sind die Klebeflächen des Transferbandes durch eine Fotomaske vor dem von außen einfallenden Primärlicht auf der dem LED-Chip gegenüberliegenden Seite geschützt.According to one embodiment, the adhesive surfaces of the transfer belt are protected by a photomask from the externally incident primary light on the opposite side of the LED chip.
Gemäß einer Ausführungsform werden die LED-Chips von einer Rolle aufgenommen, die rollt, während das Übertragungsband gegen die LED-Chips gedrückt wird.According to one embodiment, the LED chips are received by a roller that rolls while the transfer belt is pressed against the LED chips.
Gemäß einer Ausführungsform werden die LED-Chips an gewünschten Positionen auf dem Substrat positioniert und ausgerichtet und dann durch die Druckbeaufschlagung der Walze vom Transferband gelöst.According to one embodiment, the LED chips are positioned at desired positions on the substrate and aligned and then released from the transfer belt by the pressurization of the roller.
Gemäß einer Ausführungsform beinhaltet der Chiphalter eine horizontale Bondebene und die Elektrodenpads, die sich an einer Seite jedes der LED-Chips nach unten erstrecken, sind direkt mit dem Chiphalter verbunden.According to an embodiment, the chip holder includes a horizontal bonding plane, and the electrode pads extending down to one side of each of the LED chips are directly connected to the chip holder.
Gemäß einer Ausführungsform haben die Vielzahl von LED-Chips die gleiche Höhe von der Verbindungsebene des Chiphalters.According to an embodiment, the plurality of LED chips have the same height from the connection plane of the chip holder.
Gemäß einer Ausführungsform beträgt die Teilung in den LED-Chip-Arrays auf dem Chiphalter ein n-tel (wobei n eine natürliche Zahl gleich oder größer als 1 ist) derjenigen in den auf das Substrat übertragenen LED-Chip-Arrays, wobei die Teilung die horizontale Entfernung zwischen der Mitte eines LED-Chips und der Mitte des benachbarten LED-Chips darstellt.According to an embodiment, the pitch in the LED chip arrays on the chip holder is one n-th (where n is a natural number equal to or greater than 1) of those in the LED chip arrays transferred to the substrate, the pitch being horizontal distance between the center of a LED Chips and the center of the adjacent LED chips represents.
Gemäß einer Ausführungsform ist die Haftfestigkeit des Chip-Halters niedriger als die Haftfestigkeit der unbelichteten Bereiche des Transferbandes und höher als die Haftfestigkeit der freiliegenden Bereiche des Transferbandes.According to one embodiment, the adhesive strength of the chip holder is lower than the adhesive strength of the unexposed areas of the transfer ribbon and higher than the adhesive strength of the exposed areas of the transfer ribbon.
Gemäß einer Ausführungsform besteht die Vielzahl der auf dem Chiphalter angeordneten LED-Chips aus nur einem Typ von LED-Chip, ausgewählt aus roten, grünen und blauen LED-Chips, die nach demselben Verfahren hergestellt werden.According to one embodiment, the plurality of LED chips arranged on the chip holder consist of only one type of LED chip, selected from red, green and blue LED chips, which are manufactured by the same method.
Gemäß einer Ausführungsform beinhaltet die Vielzahl der auf dem Chiphalter angeordneten LED-Chips rote LED-Chips, grüne LED-Chips und blaue LED-Chips.According to an embodiment, the plurality of LED chips disposed on the chip holder include red LED chips, green LED chips, and blue LED chips.
Gemäß einer Ausführungsform kann der Chip-Halter eine flexible Folie sein.According to one embodiment, the chip holder may be a flexible foil.
Vorteilhafte WirkungenAdvantageous effects
Nach der vorliegenden Erfindung kann das LED-Modul durch präzises Ausrichten einer Vielzahl von LED-Chips auf einem Substrat im Transferdruck hergestellt werden. Gemäß dem Transferdruck werden alle oder einige LED-Chips, die an bestimmten Positionen angeordnet sind, in einer gewünschten Anordnung auf einem Zielsubstrat angeordnet.According to the present invention, the LED module can be manufactured by precisely aligning a plurality of LED chips on a substrate in transfer printing. According to the transfer printing, all or some of the LED chips arranged at certain positions are arranged in a desired arrangement on a target substrate.
Andere Auswirkungen der vorliegenden Erfindung werden aus der folgenden Beschreibung besser verstanden.Other effects of the present invention will be better understood from the following description.
Figurenlistelist of figures
Diese und/oder andere Aspekte und Vorteile der Erfindung sind aus der folgenden Beschreibung der Ausführungsbeispiele in Verbindung mit den beigefügten Zeichnungen ersichtlich und leichter zu erkennen:
-
1 ist ein Flussdiagramm zur Erläuterung eines Verfahrens zur Herstellung eines LED-Moduls gemäß einer Ausführungsform der vorliegenden Erfindung; -
2 veranschaulicht einen Transferdruckprozess in einem Verfahren zur Herstellung eines LED-Moduls gemäß einer Ausführungsform der vorliegenden Erfindung; -
3 veranschaulicht ein Verfahren zur Herstellung eines Chip-on-carrier mit blauen LED-Chips in einem Verfahren zur Herstellung eines LED-Moduls gemäß einer Ausführungsform der vorliegenden Erfindung; -
4 veranschaulicht ein Verfahren zur Herstellung eines Chip-on-carrier mit grünen LED-Chips in einem Verfahren zur Herstellung eines LED-Moduls gemäß einer Ausführungsform der vorliegenden Erfindung; -
5 veranschaulicht ein Verfahren zur Herstellung eines Chip-on-carrier mit roten LED-Chips in einem Verfahren zur Herstellung eines LED-Moduls gemäß einer Ausführungsform der vorliegenden Erfindung; -
6 veranschaulicht ein Verfahren zur Herstellung eines Chip-on-carrier mit roten, grünen und blauen LED-Chips gemäß einer alternativen Ausführungsform der vorliegenden Erfindung; -
7 ist eine Draufsicht, die ein Substrat eines Anzeigemoduls gemäß einer weiteren Ausführungsform der vorliegenden Erfindung und Anordnungen von Elektrodenmustern darstellt, die in einer Matrix auf dem Substrat angeordnet sind; -
8 ist eine Draufsicht, die ein Anzeigemodul mit Gruppen von LED-Chips darstellt, die in einer Matrix auf den in7 dargestellten Elektrodenmustern angeordnet sind; -
-
10 ist eine Draufsicht zur Erläuterung einer alternativen Ausführungsform des in den7 bis9 dargestellten LED-Moduls; -
11 ist ein Flussdiagramm zur Erläuterung eines Verfahrens zur Herstellung des in den7 bis10 dargestellten LED-Moduls; -
-
13 ist ein Flussdiagramm zur Erläuterung eines Verfahrens zur Herstellung eines LED-Moduls unter Verwendung des selektiven Transferdrucks gemäß einer weiteren Ausführungsform der vorliegenden Erfindung; -
14 veranschaulicht den Schritt der Aufnahme des Chips mit dem in13 dargestellten Verfahren; -
15 ist eine vergrößerte Ansicht des Kreises „A “von 14 ; -
16 veranschaulicht den Schritt des Bewegens der Chips und den Schritt des Schwächens der Haftfestigkeit eines Trägerbandes kurz vor dem Einbringen der Chips in das in15 dargestellte Verfahren; -
17 veranschaulicht den Schritt des Platzierens von Chips nach dem in16 dargestellten Verfahren; -
18 ist eine vergrößerte Ansicht des Kreises „B “ der17 ; -
19 veranschaulicht ein Verfahren zum Aufnehmen von LED-Chips durch Total-Transferdruck; und - Die
-
1 Fig. 10 is a flow chart for explaining a method of manufacturing an LED module according to an embodiment of the present invention; -
2 illustrates a transfer printing process in a method of manufacturing an LED module according to an embodiment of the present invention; -
3 illustrates a method of manufacturing a chip-on-carrier with blue LED chips in a method of manufacturing an LED module according to an embodiment of the present invention; -
4 illustrates a method of manufacturing a chip-on-carrier with green LED chips in a method of manufacturing an LED module according to an embodiment of the present invention; -
5 FIG. 12 illustrates a method of manufacturing a chip-on-carrier with red LED chips in a method of manufacturing an LED module according to an embodiment of the present invention; FIG. -
6 FIG. 12 illustrates a method of manufacturing a chip-on-carrier with red, green and blue LED chips according to an alternative embodiment of the present invention; FIG. -
7 Fig. 10 is a plan view illustrating a substrate of a display module according to another embodiment of the present invention and arrangements of electrode patterns arranged in a matrix on the substrate; -
8th FIG. 11 is a plan view illustrating a display module with groups of LED chips arranged in a matrix on top of the one in FIG7 arranged electrode patterns are arranged; -
-
10 is a plan view for explaining an alternative embodiment of the in the7 to9 illustrated LED module; -
11 is a flowchart for explaining a method for producing the in the7 to10 illustrated LED module; -
-
13 Fig. 10 is a flowchart for explaining a method of manufacturing an LED module using the selective transfer printing according to another embodiment of the present invention; -
14 illustrates the step of receiving the chip with the in13 presented method; -
15 is an enlarged view of the circle "A " from14 ; -
16 FIG. 12 illustrates the step of moving the chips and the step of weakening the adhesive strength of a carrier tape just prior to the introduction of the chips into the carrier. FIG15 illustrated method; -
17 illustrates the step of placing chips after the in16 presented method; -
18 is an enlarged view of the circle "B " the17 ; -
19 illustrates a method of receiving LED chips by total transfer printing; and - The
Ausführungsformen der ErfindungEmbodiments of the invention
Die Haftfestigkeit des Transferbandes
Unter Bezugnahme auf
In
Unter Bezugnahme auf
In
In
Unter Bezugnahme auf
In
Wie in
[Herstellung eines zweiten LED-Moduls][Production of a Second LED Module]
Unter Bezugnahme auf die
Die Elektrodenmuster130 sind auf dem Substrat
Wie vorstehend erwähnt, sind die mehreren Elektrodenmuster
Die Vielzahl der Elektrodenmuster
Jedes der Elektrodenmuster
Das erste individuelle Elektrodenpad
Das gemeinsame Elektrodenpad
Das erste individuelle Elektrodenpad
Das erste individuelle Elektrodenpad
Die Enden
Wie auch in
Der erste LED-Chip
Der zweite LED-Chip
Der dritte LED-Chip
Alle LED-Chips
Der erste erste Kontaktpunkt
Die Stufe jedes der LED-Chips
Der durch das Ätzen verursachte Höhenunterschied der LED-Chips kann reduziert werden, wenn die beiden Elektroden jedes LED-Chips unterschiedlich hoch ausgelegt sind, aber das Vorhandensein feiner Stufen ist unvermeidlich. Aus diesem Grund werden die Höhen des ersten ersten Kontaktpunktes
Wenn auf die erste Höhe komprimiert, weisen der erste erste Kontaktpunkt
Wenn die Kontaktpunkte
Der erste Zweig
Die Vielzahl der mit dem Substrat
Die in einer Matrix auf dem Substrat
Der Abstand zwischen dem ersten LED-Chip
Unter Bezugnahme auf nun
Die ersten lichtreflektierenden Wände
Unter Bezugnahme auf die
Unter Bezugnahme auf die
Insbesondere der Schritt des Anordnens der Gruppen von LED-Chips
Wie im Folgenden ausführlich erläutert, verwendet die Rolle-zu-Rolle-Transferdrucktechnik für die Übertragung der LED-Chips
Wie bereits kurz erwähnt, beinhaltet der Schritt des Anordnens der Gruppen von LED-Chips
Die Schritte des Bondens der LED-Chips in einer Matrix (
Bevor die LED-Chips
Es ist notwendig, die Haftfestigkeit von Bereichen des Bonding-Trägers zu schwächen, die nicht den LED-Chips
In
Es wird bevorzugt, den Bonding-Träger
Die Druckbeaufschlagung durch das Walzen der Chipauflegerolle
Nach diesem Verfahren können die LED-Chips
Das LED-Modul mit Anordnungen der LED-Chips, die Licht mit unterschiedlichen Wellenlängen emittieren, ist nicht auf die konstitutionellen und betrieblichen Modi der vorgenannten Ausführungsformen beschränkt. Alle oder einige der Ausführungsformen werden für verschiedene Modifikationen selektiv kombiniert.The LED module having arrangements of the LED chips emitting light of different wavelengths is not limited to the constitutional and operational modes of the aforementioned embodiments. All or some of the embodiments are selectively combined for various modifications.
[Herstellung des dritten LED-Moduls][Production of the third LED module]
Unter Bezugnahme auf
Die Vielzahl der LED-Chips
Andererseits können
Unter Bezugnahme auf
Nachdem der Chip-on-Film c1 auf einer UV-durchlässigen Oberplatte
Das UV-Scan-Set
Die Haftfestigkeit der Chiphaltefolie
Die Haftfestigkeit eines Bereichs der Chiphaltefolie
Die Aufnahmewalze
Die aufzunehmenden LED-Chips
Unter Bezugnahme auf
Unter Bezugnahme auf die
Die
Unter Bezugnahme auf
Im Gegensatz dazu, bezogen auf die
Wie in
Claims (20)
Applications Claiming Priority (11)
Application Number | Priority Date | Filing Date | Title |
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KR10-2016-0102239 | 2016-08-11 | ||
KR20160102239 | 2016-08-11 | ||
KR10-2016-0157045 | 2016-11-24 | ||
KR1020160157045A KR20180018246A (en) | 2016-08-11 | 2016-11-24 | Display module comprising an array of led chip groups |
KR1020170030395A KR20180103441A (en) | 2017-03-10 | 2017-03-10 | method for making LED module using selective transfer printing |
KR10-2017-0030395 | 2017-03-10 | ||
KR10-2017-0032900 | 2017-03-16 | ||
KR10-2017-0032955 | 2017-03-16 | ||
KR1020170032955A KR20180105803A (en) | 2017-03-16 | 2017-03-16 | method for fabricating LED module |
KR1020170032900A KR20180105782A (en) | 2017-03-16 | 2017-03-16 | chip on carrier for fabricating LED module and method for making the same |
PCT/KR2017/008269 WO2018030695A1 (en) | 2016-08-11 | 2017-08-01 | Led module and method for preparing same |
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Cited By (2)
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EP3761349A1 (en) * | 2019-07-05 | 2021-01-06 | X-FAB Semiconductor Foundries GmbH | Method for manufacturing semiconductor modules for increasing yield in microtransfer printing |
CN113410344A (en) * | 2020-03-16 | 2021-09-17 | 重庆康佳光电技术研究院有限公司 | LED chip set, display screen and manufacturing method thereof |
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CN110034224A (en) * | 2019-04-26 | 2019-07-19 | 中国科学院长春光学精密机械与物理研究所 | A kind of transfer method based on bar shaped Micro-LED |
CN110098289A (en) * | 2019-05-07 | 2019-08-06 | 京东方科技集团股份有限公司 | A kind of production method of transfer device and display base plate |
CN112885822B (en) | 2020-07-27 | 2023-08-01 | 友达光电股份有限公司 | Method for manufacturing display device |
CN113809114A (en) * | 2021-09-13 | 2021-12-17 | 深圳市洲明科技股份有限公司 | Manufacturing method of LED display module and LED display module |
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JP3906653B2 (en) * | 2000-07-18 | 2007-04-18 | ソニー株式会社 | Image display device and manufacturing method thereof |
DE10038163A1 (en) * | 2000-08-04 | 2002-02-14 | Infineon Technologies Ag | Device and method for loading conveyor belts |
JP2002280613A (en) * | 2001-03-19 | 2002-09-27 | Matsushita Electric Ind Co Ltd | Method and member for manufacturing illuminating device |
JP2003332184A (en) * | 2002-05-13 | 2003-11-21 | Sony Corp | Element transferring method |
JP2003332523A (en) * | 2002-05-17 | 2003-11-21 | Sony Corp | Transferring method and arraying method for element, and manufacturing method for image display device |
TWI557831B (en) * | 2015-05-15 | 2016-11-11 | 友達光電股份有限公司 | Method for transferring micro device |
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2017
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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EP3761349A1 (en) * | 2019-07-05 | 2021-01-06 | X-FAB Semiconductor Foundries GmbH | Method for manufacturing semiconductor modules for increasing yield in microtransfer printing |
CN113410344A (en) * | 2020-03-16 | 2021-09-17 | 重庆康佳光电技术研究院有限公司 | LED chip set, display screen and manufacturing method thereof |
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