WO2016181704A1 - Module électroluminescent organique et dispositif intelligent - Google Patents

Module électroluminescent organique et dispositif intelligent Download PDF

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Publication number
WO2016181704A1
WO2016181704A1 PCT/JP2016/058584 JP2016058584W WO2016181704A1 WO 2016181704 A1 WO2016181704 A1 WO 2016181704A1 JP 2016058584 W JP2016058584 W JP 2016058584W WO 2016181704 A1 WO2016181704 A1 WO 2016181704A1
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WIPO (PCT)
Prior art keywords
organic
electrode
organic electroluminescence
light emitting
bezel
Prior art date
Application number
PCT/JP2016/058584
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English (en)
Japanese (ja)
Inventor
夏樹 山本
一由 小俣
Original Assignee
コニカミノルタ株式会社
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Priority to JP2017517634A priority Critical patent/JPWO2016181704A1/ja
Publication of WO2016181704A1 publication Critical patent/WO2016181704A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B44/00—Circuit arrangements for operating electroluminescent light sources
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/02—Details
    • H05B33/06—Electrode terminals
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/842—Containers
    • H10K50/8426—Peripheral sealing arrangements, e.g. adhesives, sealants

Definitions

  • the present invention relates to an organic electroluminescence module having a touch detection function and a smart device having the same.
  • a light emitting diode using a light guide plate Light Emitting Diode, hereinafter abbreviated as “LED”
  • LED Light Emitting Diode
  • organic light emitting diode Organic Light Emitting Diode, hereinafter, an organic electroluminescence element, Organic EL element or “OLED”.
  • an icon part which is a common function key button provided in the lower part of the smart device corresponds to this.
  • This common function key button has, for example, three types of marks indicating “Home” (displayed by a square mark, etc.), “Back” (displayed by an arrow mark, etc.), and “Search” (displayed by a magnifying glass mark, etc.). It may be provided.
  • the above-mentioned organic electroluminescence element has attracted attention as a surface light source for illumination in addition to applications such as television, and studies on its application are underway in various fields.
  • organic electroluminescence elements with thin flexibility have begun to be developed using a film substrate, taking advantage of its thinness and excellent flexibility, organic electroluminescence elements can be used as light sources for smart devices, particularly smartphones.
  • smart devices particularly smartphones
  • studies on application to backlights, functional key lights, decoration lights, camera auxiliary lights, and the like have been actively made.
  • decoration lights each smart media manufacturer needs to appeal its brand by emitting its own logo on smartphones, which tend to have a single design, and fine pixel division like a display
  • the possibility of its application has been studied from an early stage.
  • a film / film type touch sensor is often used which is laminated to a size equivalent to that of a cover glass.
  • a glass / glass type may be used.
  • a capacitive detection type is often employed as a touch detection type.
  • a method called “projection capacitive method”, which has fine electrode patterns in the x-axis and y-axis directions, is employed. In this method, it is possible to detect two or more touches called “multi-touch”.
  • the organic electroluminescence element is a surface light emitter, and unlike the conventional light source for illumination, it is thin and flexible, and can be bent into various shapes. Strength.
  • an in-cell type organic electroluminescence element is a promising candidate as a device having a light emitting function and capable of providing a touch detection function. come. By applying this method, there is no need to laminate an additional touch panel, which can greatly contribute to the reduction of the number of parts.
  • a multi-touch function such as a scroll operation or a tap operation
  • an in-cell type organic electroluminescence module capable of detecting a scrolling action and a tapping action by a finger touch and capable of displaying a company logo and the like and a smart device equipped with the in-cell type are demanded.
  • the present invention has been made in view of the above-described problems and situations, and the problem to be solved is an organic electroluminescence module having an organic electroluminescence element having a light emitting display function, a scroll operation function and a tap operation function, and Providing a smart device.
  • the inventor is an organic electroluminescence module constituted by an organic electroluminescence panel and an electrical connection member, and the organic electroluminescence panel is a pair of organic electroluminescence elements.
  • a bezel region which is a non-light emitting display region constituted by the electrodes, has at least one bezel electrode that does not contribute to the light emission operation, and the electrical connection member is electrically connected to the organic electroluminescence panel via a conductive member.
  • An organic electroluminescence module having an organic electroluminescence panel and an electrical connection member, wherein the organic electroluminescence panel is configured to sandwich an organic functional layer group including a light emitting layer between a pair of an anode electrode and a cathode electrode
  • the device has at least one bezel electrode that does not contribute to the light emitting operation in the bezel region that is a non-light emitting display region
  • the electrical connection member has an electrical energy supply line to the anode electrode and the cathode electrode of the organic electroluminescence panel, and a signal line to the bezel electrode
  • the organic electroluminescence module wherein the electrical connection member is electrically connected to the organic electroluminescence panel via a conductive member.
  • a light emitting element driving circuit unit for instructing light emission of the organic electroluminescence element; and a capacitance type touch detection circuit unit for detecting a self-capacitance change of the anode electrode or a self-capacitance change of the bezel electrode.
  • the light emission period of the organic electroluminescence panel controlled by the light emitting element driving circuit unit is separated from the touch sensing period controlled by the touch detection circuit unit, and the capacitance of the organic electroluminescence panel is not detected in the touch sensing period.
  • the organic electroluminescence module according to item 2 wherein at least one of the pair of electrodes is in a floating potential state.
  • a smart device comprising the organic electroluminescence module according to any one of items 1 to 3, A smart device, wherein the organic electroluminescence module is disposed on a main display surface side, a back surface side, or a side surface side.
  • an organic electroluminescence module having an organic electroluminescence element having a light emitting function, a scroll operation and a tap operation, and a smart device equipped with the organic electroluminescence module.
  • organic electroluminescence module in the organic electroluminescence module of the present invention (hereinafter abbreviated as “organic EL module”), as shown in FIG.
  • organic EL module In addition to the anode electrode and the cathode electrode that contribute to light emission, a “bezel electrode” that does not contribute to light emission is disposed in at least one place in the bezel region of the organic EL panel, A touch detection circuit is provided for the bezel electrode.
  • a first electric control member for controlling light emission of an organic electroluminescence element (hereinafter abbreviated as “organic EL element”) between a pair of anode / cathode electrodes arranged at opposite positions.
  • the light-emitting element driving circuit unit is included, and at least one electrode of the pair of electrodes functions as a touch detection electrode as the second electric control member, and the touch detection circuit unit is included therein.
  • the anode electrode in the organic EL panel is used as a detection electrode for a normal tap operation or a double tap operation applied to the logo portion with a finger or the like.
  • anode electrode anode electrode
  • cathode cathode
  • the touching finger and touch When the capacitance between the detection electrodes is Cf and the capacitance between the anode electrode and the cathode electrode is Cel, the capacitance when touching (when touching) is “Cf + Cel”, and there is no finger touch.
  • Cf Cf + Cel
  • the light emitting element driving circuit unit and the touch detection circuit unit are provided independently, and the anode electrode (in order to prevent the capacitance Cel between the anode electrode and the cathode electrode from being detected during touch detection).
  • Touch detection is performed by turning off the switch between the anode) and cathode electrode (cathode) and the light emitting element driving circuit unit, and setting at least one of the anode electrode (anode) and cathode electrode (cathode) to a floating potential state.
  • the floating potential state in the present invention refers to a floating potential state that is not connected to the power supply or the ground of the device, and the anode electrode (anode) or cathode electrode (cathode) at the time of touch detection has a floating potential.
  • the electrostatic capacitance Cel of the organic EL panel is not detected, and as a result, touch detection by finger touch becomes possible.
  • Cel is not present in at least one bezel electrode, and it is possible to detect a finger touch to the area by detecting a change in Cf.
  • touch detection by switch-off operation to the part and Cf change detection of the bezel electrode it is possible to perform the company logo light emission, touch operation, and slide touch operation on the back and side surfaces of the smart device and the entire surface in a small format. .
  • FIG. 1 Schematic sectional view showing an example of the overall configuration of the organic electroluminescence module of the present invention
  • the schematic top view which shows an example of a structure of the organic electroluminescent panel which comprises an organic electroluminescent module, and an electrical connection member (FPC: flexible printed circuit) Schematic top view and schematic back view showing an example of an organic electroluminescence module configured by connecting an organic electroluminescence panel and an electrical connection member Schematic sectional view showing an example of an organic electroluminescence module
  • the schematic block diagram which shows the example of arrangement
  • the organic electroluminescence module of the present invention has an organic electroluminescence panel and an electrical connection member, and the organic electroluminescence panel has a configuration in which an organic functional layer group including a light emitting layer is sandwiched between a pair of anode electrodes and a cathode electrode.
  • An organic electroluminescence element and at least one bezel electrode that does not contribute to light emission operation is provided in a bezel region that is a non-light-emitting display region
  • the electrical connection member includes an anode electrode and a cathode of the organic electroluminescence panel
  • an organic electroluminescence module includes a light emitting element driving circuit unit for instructing light emission of the organic electroluminescent element, and a self-operating of the anode electrode, from the viewpoint that the effect of the present invention can be further expressed.
  • a configuration having a capacitive touch detection circuit unit that detects a change in capacitance or a change in self-capacitance of the bezel electrode can simplify the circuit and exhibit an efficient touch detection function. From the viewpoint of being able to.
  • the light emission period of the organic electroluminescence panel controlled by the light emitting element driving circuit unit and the touch sensing period controlled by the touch detection circuit unit are separated, and in the touch sensing period, the electric capacitance of the organic electroluminescence panel is In order to prevent detection, it is preferable that at least one of the pair of electrodes is in a floating potential state from the viewpoint of more clearly separating the light emission period and the sensing period.
  • the organic electroluminescence module of the present invention on the main display surface side, the back surface side or the side surface side, various users can easily operate regardless of the size of the operating hand or the size of the smart device body.
  • a smart device that can be provided can be provided.
  • organic electroluminescence element a member constituted by a pair of electrodes and an organic functional layer unit
  • organic electroluminescence element or organic EL element a member constituted by a pair of electrodes and an organic functional layer unit
  • organic electroluminescent panel or an organic EL panel the structure which has arrange
  • organic electroluminescent panel or an organic EL panel the structure which has arrange
  • organic electroluminescent panel or an organic EL panel the structure which has arrange
  • organic electroluminescent panel or an organic EL panel the structure which has arrange
  • organic electroluminescent panel or an organic EL panel the structure which has arrange
  • organic electroluminescent panel or an organic EL panel
  • the “bezel region” in the present invention refers to a region that does not contribute to light emission in the organic EL element, specifically, a region excluding the light emitting display region.
  • An electrode that is formed in this bezel region and is not electrically connected to the anode electrode and the cathode electrode of the organic EL element is referred to as a “bezel electrode”.
  • the organic EL module of the present invention has a configuration in which an electrical connection member is joined to an organic EL panel, and the electrical connection member is a capacitive touch detection circuit unit and a light emitting element drive for driving the organic EL panel.
  • the organic EL panel has at least an anode electrode and a cathode electrode as a pair of planar electrodes at opposing positions inside, and the pair of electrodes are connected to the light emitting element driving circuit unit.
  • the present invention is characterized in that a bezel electrode that is not connected to the pair of electrodes is provided in the outer peripheral portion of the light emitting region constituted by the pair of electrodes, that is, the bezel region portion.
  • FIG. 1 is a schematic cross-sectional view showing an example of the configuration of the organic EL module of the present invention.
  • an anode electrode (4, anode) and, for example, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron are formed on a transparent substrate (3).
  • An organic functional layer unit (5) composed of an injection layer or the like is laminated to constitute a light emitting region (LA).
  • a cathode electrode (6, cathode) is laminated on the upper part of the organic functional layer unit (5) to constitute the organic EL element (9).
  • two bezel electrodes (BZ-A and BZ-B) are arranged on the outer peripheral portion of the light emitting region (LA).
  • the outer peripheral part of the organic EL element (9) is sealed with a sealing adhesive layer (7), and on its surface, harmful gas (oxygen, moisture, etc.) from the external environment is prevented from penetrating into the light emitting part.
  • the sealing member (8) is arranged to constitute the organic EL panel (2).
  • the organic EL panel (2) according to the present invention may have a configuration in which a metal foil layer is provided on the outermost surface side for the purpose of protecting the organic EL element (9).
  • the anode electrode (4) and the cathode electrode (6) which are a pair of electrodes, are connected to a light emitting element driving circuit unit (12) that controls light emission. Also, the two bezel electrodes (BZ-A and BZ-B), or the two bezel electrodes (BZ-A and BZ-B) and the anode electrode (4), touch detection for detecting touch (finger touch) Connected to the circuit unit (14).
  • the surface of the transparent base (3) opposite to the surface on which the organic EL element is formed is, for example, an anode of an organic electroluminescence panel on a flexible substrate.
  • An electric connection member FPC, flexible printed circuit
  • FPC flexible printed circuit
  • FIG. 2 is a schematic top view showing an example of the configuration of an FPC (flexible printed circuit) as an example of an organic EL panel constituting an organic EL module and an electrical connection member.
  • FPC flexible printed circuit
  • 2A is a schematic top view showing an example of an organic EL panel.
  • the organic EL panel (2) shown in FIG. 2A comprises a transparent substrate (3), an anode electrode (4), an organic functional layer group including a light emitting layer (not shown), and a cathode electrode (6).
  • the organic EL element (9) to be formed is arranged to form a light emitting region (LA). From the organic EL element (9), an extraction electrode from the anode electrode (4) and an extraction electrode from the cathode electrode (6) are arranged. Further, a bezel electrode A (BZ-A) and a bezel electrode B (BZ-B) are formed independently of other electrodes on the upper and lower portions outside the light emitting region (LA).
  • a sealing member (8) is formed on the organic EL element (9) and each bezel electrode.
  • the ends of the anode electrode (4), the cathode electrode (6), and the bezel electrodes (BZ-A and BZ-B) are electrically connected to an FPC (flexible printed circuit) which is an electrical connection member described with reference to FIG. Because it is connected, it is exposed.
  • FPC flexible printed circuit
  • FIG. 2 B shown in the lower part of FIG. 2 is a schematic top view showing an example of the configuration of an FPC (flexible printed circuit) which is an electrical connection member.
  • FPC flexible printed circuit
  • the FPC shown in B of FIG. 2 is electrically connected to each electrode constituting the organic EL panel (2) described above on a printed wiring board (PCB) to control driving power supply and information. It has a printed wiring (PC) and each pad (P) for transmission to the part.
  • the pads include a bezel electrode A connection pad (BZ-AP) for connecting the bezel electrode A (BZ-A), and a cathode electrode connection pad (6-P) for connecting the cathode electrode (6). ), An anode electrode connection pad (4-P) for connecting the anode electrode (4), and a bezel electrode B connection pad (BZ-BP) for connecting the bezel electrode B (BZ-B).
  • BZ-AP bezel electrode A connection pad
  • 6-P cathode electrode connection pad
  • BZ-BP bezel electrode B connection pad
  • FIG. 3 is a schematic diagram showing an example of the organic EL module (1) configured by connecting the organic EL panel (2) described in FIG. 2 and an electrical connection member (FPC).
  • FPC electrical connection member
  • a shown in the upper part of FIG. 3 is a schematic top view of the organic EL module (1)
  • B shown in the lower part of FIG. 3 is a schematic rear view when the organic EL module (1) is observed from the back side. . Therefore, a schematic top view of the electrical connection member (FPC) observed from the top side shown by B in FIG. 2 and a schematic back view of the electrical connection member (FPC) observed from the back side shown by B in FIG.
  • FPC electrical connection member
  • the bezel electrode A (BZ-A), the anode electrode (4), the cathode electrode (6), and the bezel electrode B which are electrodes constituting the organic EL panel (2) described in FIG. (BZ-B), the bezel electrode A connection pad (BZ-AP), the cathode electrode connection pad (6-P), and the anode electrode connection pad (4) included in the electrical connection member (FPC).
  • -P) and the bezel electrode B connection pad (BZ-BP) are electrically connected to form the organic EL module (1).
  • 3 is a transparent base material which comprises an organic electroluminescent panel (2), 8 is the sealing member arrange
  • FIG. 3 B shown in the lower part of FIG. 3 is a view of the organic EL module (1) seen from the back side, and a protective film (F) is disposed on the outermost surface.
  • FIG. 4 is a schematic cross-sectional view showing an example of the organic EL module having the configuration described in FIG.
  • FIG. 4A is a cross-sectional view represented by the II cut plane shown in FIG. 3 and includes a bezel electrode A formed in the bezel region.
  • the bezel electrode A (BZ-A) is disposed under the transparent base material (3) and is sealed by the sealing member (8).
  • the end portion of the bezel electrode A (BZ-A) constitutes an exposed extraction electrode, and the end portion of the electrical connection member (FPC) has a bezel electrode A connection pad (BZ-AP).
  • the bezel electrode A (BZ-A) and the bezel electrode A connection pad (BZ-AP) are electrically connected by a conductive member (not shown) to constitute the organic EL module (1). Yes.
  • a protective film (F) for protecting the organic EL module (1) is provided below the sealing member (8).
  • FIG. 4 B shown in the lower part of FIG. 4 is a cross-sectional view taken along the line II-II shown in FIG. 3, and is a cross-sectional view including the cathode electrode (6).
  • the organic EL element (9) is disposed under the transparent substrate (3) and is sealed by the sealing member (8).
  • a lead electrode of the cathode electrode (6) is formed from the end of the organic EL element (9).
  • a cathode electrode connection pad (6-P) is provided at the end of the electrical connection member (FPC).
  • the cathode electrode (6) and the cathode electrode connection pad (6-P) are electrically conductive members (non-conductive).
  • the organic EL module (1) is configured by electrical connection according to the figure.
  • a protective film (F) for protecting the organic EL module (1) is provided below the sealing member.
  • FIG. 5A and 5B are schematic configuration diagrams showing an example of a smart device including the organic EL module of the present invention, FIG. 5A is a main display screen side, and FIG. 5B is a back side.
  • FIG. 5B is a schematic diagram showing an example of a configuration having a main display screen (120) and a sub display screen (110) on the main surface side of the smart device (100) shown in FIG. 5A.
  • the smart device (100) shown in FIG. 5A includes a display screen (110) and a main display screen (120) including a liquid crystal display device on the front side.
  • a conventionally known liquid crystal display device can be used as the liquid crystal display device constituting the main display screen (120).
  • the organic EL module of the present invention may be arranged, or a conventional organic EL module may be arranged.
  • Each of the sub display screens (110) has a plurality of organic EL panels of the present invention or conventional organic EL panels, and icon display portions (111) having different display patterns are arranged. At the time of light emission, light emission of various display patterns such as figures, characters, and patterns is visually recognized. Further, when the organic EL panel is in a non-light emitting state, various display patterns are not visually recognized.
  • FIG. 5B is a configuration on the back side of the smart device (100), and an overall configuration in which an organic EL module (1) having a scroll function or a touch function including the organic EL element (9) is arranged as a sub display screen.
  • An example of a schematic diagram is shown.
  • the organic EL module (1) of the present invention has a main display screen side as shown in FIG. 5A, a back side as shown in FIG. 5B, or a smart device.
  • the organic EL module (1) of the present invention having a scroll function or a touch function as a secondary display screen is preferably provided on the back side as exemplified in FIG. 5B.
  • the configuration is the most preferred embodiment.
  • FIG. 6 is a schematic diagram illustrating an example of a scroll operation and a tap operation by a smart device.
  • FIG. 6 is a rear view of the same smart device (100) as FIG. 5B, and includes the organic EL module (1) of the present invention.
  • FIG. 6 is a diagram showing the internal structure of the region of the organic EL module (1), an organic EL panel (2) including an organic EL element (9) having a light emitting region (LA), An organic EL module (1) composed of an electrical connection member (FPC) is disposed.
  • FIG. 6C is a diagram showing a state of scrolling operation, for example, page scrolling, on the organic EL panel (2), and the finger (15) is touched in the vertical direction of the organic EL panel (2).
  • Scrolling SC
  • page scrolling is performed.
  • D shown in FIG. 6 is a diagram illustrating a situation where a tap operation is performed.
  • T double-tapping
  • Tap operation can be performed.
  • FIG. 7 is an overall configuration diagram of a smart device including the organic EL module of the present invention.
  • FIG. 7 shows an example in which the sub display screens are arranged on both the front side and the back side.
  • the cover glass (104) is disposed on the front surface side (main display screen side), the liquid crystal panel (105) is disposed on the lower surface side thereof, and the lower portion thereof is driven.
  • a battery (not shown) or the like which is power for use is stored.
  • an organic EL panel (2) is arranged on the lower surface side of the sub display screen (110) on the front side, and the organic EL panel (2) passes through a flexible printed circuit (FPC) which is an electrical connection unit. Are connected to a printed wiring circuit (PCB) for controlling driving.
  • FPC flexible printed circuit
  • the liquid crystal panel (105) is also connected to a printed wiring circuit (PCB) via a flexible printed circuit (FPC). Moreover, when electrically connecting the extraction electrode part of an organic EL panel (2) and a flexible printed circuit (FPC), it joins using a conductive adhesive.
  • the conductive adhesive will be described later.
  • the sub display screen (102B) includes the organic EL element (2) and a flexible printed circuit (FPC) electrically connected thereto on the lower surface side of the light-transmissive protective member (F).
  • the organic EL device (1) and the flexible printed circuit (FPC) are connected to a printed wiring circuit (PCB) that controls driving.
  • the organic EL module of the present invention it is preferable to mainly apply the following two touch detection methods.
  • the light emitting element circuit unit is always energized to emit light, and the bezel electrode A and the bezel electrode B having a switch function are used.
  • the switches are turned “ON” in order from the bezel electrode A to the bezel electrode B.
  • Cf the change in the capacitance
  • a tap operation can be performed by detecting a change in Cf of only the anode detection electrode, and a double tap can be enabled by detecting a change in Cf with a time difference. Details will be described later.
  • the organic EL panel (2) constituting the organic EL module (1) includes, for example, an anode electrode (4, anode) and an organic functional layer unit on the transparent substrate (3) as illustrated in FIG. (5) is laminated, and an organic EL element (9) having a light emitting region (LA) is formed by laminating a cathode electrode (6, cathode) on the organic functional layer unit (5). .
  • the outer peripheral portion of the organic EL element (9) is sealed with a sealing adhesive (7), and a sealing member (8) is disposed on the surface thereof to constitute an organic EL panel (2).
  • Anode / organic functional layer unit (hole injection transport layer / light emitting layer / electron injection transport layer) / cathode (ii) Anode / organic functional layer unit (hole injection transport layer / light emitting layer / hole blocking layer / Electron injection transport layer) / cathode (iii) Anode / organic functional layer unit (hole injection transport layer / electron blocking layer / light emitting layer / hole blocking layer / electron injection transport layer) / cathode (iv) Anode / organic functional layer Unit (hole injection layer / hole transport layer / light emitting layer / electron transport layer / electron injection layer) / cathode (v) Anode / organic functional layer unit (hole injection layer / hole transport layer / light emitting layer / hole) Blocking layer / electron transport layer / electron injection layer) / cathode (vi) anode / organic functional layer unit (hole injection layer / hole transport layer / electron blocking layer / light emitting layer (I
  • transparent substrate examples of the transparent substrate (3) applicable to the organic EL element according to the present invention include transparent materials such as glass and plastic. Examples of the transparent substrate (3) having light transmittance preferably used include glass, quartz, and resin films.
  • transparent as used in the present invention means that the light transmittance at a wavelength of 550 nm is 50% or more, preferably 70% or more, and more preferably 85% or more.
  • the glass material examples include silica glass, soda lime silica glass, lead glass, borosilicate glass, and alkali-free glass.
  • a physical treatment such as polishing, a coating made of an inorganic material or an organic material, or these coatings, if necessary.
  • a combined hybrid coating can be formed.
  • polyesters such as polyethylene terephthalate (abbreviation: PET) and polyethylene naphthalate (abbreviation: PEN), polyethylene (abbreviation: PE), polypropylene (abbreviation: PP), cellophane, and cellulose diene.
  • Cellulose esters such as acetate, cellulose triacetate (abbreviation: TAC), cellulose acetate butyrate, cellulose acetate propionate (abbreviation: CAP), cellulose acetate phthalate, cellulose nitrate, and derivatives thereof, polyvinylidene chloride, polyvinyl alcohol ( Abbreviation: PVA), polyethylene vinyl alcohol, syndiotactic polystyrene, polycarbonate (abbreviation: PC), norbornene resin, polymethylpentene, poly -Terketone, polyimide (abbreviation: PI), polyethersulfone (abbreviation: PES), polyphenylene sulfide, polysulfones, polyetherimide, polyetherketoneimide, polyamide, fluororesin, nylon, polymethylmethacrylate (abbreviation: PMMA), acrylic And polyarylates, cycloolefin resins (abbreviation: COP) such as Art
  • a gas barrier layer may be provided on the transparent substrate (3) as described above, if necessary.
  • any material that has a function of suppressing intrusion of water or oxygen that causes deterioration of the organic EL element may be used.
  • an inorganic substance such as silicon oxide, silicon dioxide, or silicon nitride may be used. Can be used.
  • anode electrode anode
  • the anode constituting the organic EL element include metals such as Ag and Au, alloys containing metal as a main component, CuI, indium-tin composite oxide (ITO), and metal oxides such as SnO 2 and ZnO.
  • a metal or a metal-based alloy is preferable, and silver or a silver-based alloy is more preferable.
  • the anode according to the present invention may be a transparent electrode or a non-transparent electrode, but is designed as a transparent electrode when the anode side is a light extraction surface (light emitting surface).
  • the purity of silver is preferably 99% or more. Further, palladium (Pd), copper (Cu), gold (Au), or the like may be added to ensure the stability of silver.
  • the transparent anode is preferably a layer composed mainly of silver, but specifically, it may be formed of silver alone or an alloy containing silver (Ag) as a main component. It may be.
  • Such alloys include silver / magnesium (Ag / Mg), silver / copper (Ag / Cu), silver / palladium (Ag / Pd), silver / palladium / copper (Ag / Pd / Cu), silver -Indium (Ag.In) etc. are mentioned.
  • the anode constituting the organic EL device according to the present invention is a transparent anode composed mainly of silver and having a thickness in the range of 2 to 20 nm.
  • the thickness is preferably in the range of 4 to 12 nm.
  • a thickness of 20 nm or less is preferable because the absorption component and reflection component of the transparent anode can be kept low and high light transmittance can be maintained.
  • the layer composed mainly of silver means that the silver content in the transparent anode is 60% by mass or more, preferably the silver content is 80% by mass or more, More preferably, the silver content is 90% by mass or more, and particularly preferably the silver content is 98% by mass or more.
  • transparent in the transparent anode according to the present invention means that the light transmittance at a wavelength of 550 nm is 50% or more.
  • the transparent anode may have a configuration in which a layer composed mainly of silver is divided into a plurality of layers as necessary.
  • a base layer may be provided at the lower portion from the viewpoint of improving the uniformity of the silver film of the transparent anode to be formed.
  • a base layer it is a layer containing the organic compound which has a nitrogen atom or a sulfur atom, and the method of forming a transparent anode on the said base layer is a preferable aspect.
  • the organic EL device in the case of taking a structure in which two or more organic functional layer units composed of an organic functional layer group and a light emitting layer are laminated between the anode and the cathode, two or more The organic functional layer units can be separated by an intermediate electrode layer unit having independent connection terminals for obtaining electrical connection.
  • Bezel electrode In the present invention, it is characterized in that a bezel electrode for touch detection is formed in a non-light emitting region, but the bezel electrode is made of the same material and method as those used for forming the anode described above or the cathode described later. It can be formed in the bezel region.
  • the light emitting layer constituting the organic EL element preferably has a structure containing a phosphorescent light emitting compound as a light emitting material.
  • the light emitting layer is a layer that emits light by recombination of electrons injected from the electrode or the electron transport layer and holes injected from the hole transport layer, and the light emitting portion is in the layer of the light emitting layer. Alternatively, it may be an interface between the light emitting layer and another adjacent layer.
  • the light emitting layer is not particularly limited in its configuration as long as the light emitting material included satisfies the light emission requirements. Moreover, there may be a plurality of layers having the same emission spectrum and emission maximum wavelength. In this case, it is preferable to provide a non-light emitting intermediate layer between the light emitting layers.
  • the total thickness of the light emitting layers is preferably in the range of 1 to 100 nm, and more preferably in the range of 1 to 30 nm because a lower driving voltage can be obtained.
  • the sum total of the thickness of a light emitting layer means the thickness also including the said intermediate
  • the light emitting layer as described above is prepared by using, for example, a vacuum emitting method, a spin coating method, a casting method, an LB method (Langmuir Blodget, Langmuir Blodgett method), a wet coating method, an ink jet method, and the like. It can form by the well-known method of these.
  • the light-emitting layer may be a mixture of a plurality of light-emitting materials having different characteristics.
  • a phosphorescent light-emitting material and a fluorescent light-emitting material are mixed and used in the same light-emitting layer. Also good.
  • the structure of the light-emitting layer preferably includes a host compound (also referred to as a light-emitting host) and a light-emitting material (also referred to as a light-emitting dopant compound), and emits light from the light-emitting material.
  • a compound having a phosphorescence quantum yield of phosphorescence emission at room temperature (25 ° C.) of less than 0.1 is preferable. Further, the phosphorescence quantum yield is preferably less than 0.01. Moreover, it is preferable that the volume ratio in the layer is 50% or more among the compounds contained in a light emitting layer.
  • a known host compound may be used alone, or a plurality of types of host compounds may be used in combination.
  • a plurality of types of host compounds it is possible to adjust the movement of charges, and the efficiency of the organic electroluminescent device can be improved.
  • a plurality of kinds of light emitting materials described later it is possible to mix different light emission, thereby obtaining an arbitrary light emission color.
  • the host compound used in the light emitting layer may be a conventionally known low molecular compound or a high molecular compound having a repeating unit, and a low molecular compound having a polymerizable group such as a vinyl group or an epoxy group (evaporation polymerizable light emitting host). )
  • Examples of host compounds applicable to the present invention include, for example, JP-A Nos. 2001-257076, 2001-357777, 2002-8860, 2002-43056, 2002-105445, 2002-352957, 2002-231453, 2002-234888, 2002-260861, 2002-305083, US2005 / 0112407, US2009 No./0030202, International Publication No. 2001/039234, International Publication No. 2008/056746, International Publication No. 2005/089025, International Publication No. 2007/063754, International Publication No. 2005/030900, International Publication No. 2009. / 08 028, WO 2012/023947, can be mentioned JP 2007-254297, JP-European compounds described in Japanese Patent No. 2034538 Pat like.
  • a phosphorescent compound also referred to as a phosphorescent compound, a phosphorescent material, or a phosphorescent dopant
  • a fluorescent compound both a fluorescent compound or a fluorescent material
  • a phosphorescent compound is a compound in which light emission from an excited triplet is observed. Specifically, it is a compound that emits phosphorescence at room temperature (25 ° C.), and the phosphorescence quantum yield is 0 at 25 ° C.
  • a preferred phosphorescence quantum yield is 0.1 or more, although it is defined as 0.01 or more compounds.
  • the phosphorescent quantum yield can be measured by the method described in Spectroscopic II, page 398 (1992 edition, Maruzen) of the Fourth Edition Experimental Chemistry Course 7.
  • the phosphorescence quantum yield in the solution can be measured using various solvents, but when using a phosphorescent compound in the present invention, the phosphorescence quantum yield is 0.01 or more in any solvent. Should be achieved.
  • the phosphorescent compound can be appropriately selected from known compounds used for the light-emitting layer of a general organic EL device, but preferably contains a group 8 to 10 metal in the periodic table of elements. More preferred are iridium compounds, more preferred are iridium compounds, osmium compounds, platinum compounds (platinum complex compounds) or rare earth complexes, and most preferred are iridium compounds.
  • At least one light emitting layer may contain two or more phosphorescent compounds, and the concentration ratio of the phosphorescent compound in the light emitting layer varies in the thickness direction of the light emitting layer.
  • An inclined configuration may be used.
  • Preferred phosphorescent compounds in the present invention include organometallic complexes having Ir as a central metal. More preferably, a complex containing at least one coordination mode of a metal-carbon bond, a metal-nitrogen bond, a metal-oxygen bond, and a metal-sulfur bond is preferable.
  • the phosphorescent compound described above (also referred to as a phosphorescent metal complex) is described in, for example, Organic Letter, vol. 16, 2579-2581 (2001), Inorganic Chemistry, Vol. 30, No. 8, pp. 1685-1687 (1991), J. Am. Am. Chem. Soc. , 123, 4304 (2001), Inorganic Chemistry, Vol. 40, No. 7, pages 1704-1711 (2001), Inorganic Chemistry, Vol. 41, No. 12, pages 3055-3066 (2002) , New Journal of Chemistry. 26, 1171 (2002), European Journal of Organic Chemistry, Vol. 4, pages 695-709 (2004), and methods disclosed in the references and the like described in these documents Can be synthesized.
  • Fluorescent compounds include coumarin dyes, pyran dyes, cyanine dyes, croconium dyes, squalium dyes, oxobenzanthracene dyes, fluorescein dyes, rhodamine dyes, pyrylium dyes, perylene dyes, stilbene dyes. And dyes, polythiophene dyes, and rare earth complex phosphors.
  • each layer other than the light emitting layer constituting the organic functional layer unit will be described in the order of a charge injection layer, a hole transport layer, an electron transport layer, and a blocking layer.
  • the charge injection layer is a layer provided between the electrode and the light emitting layer in order to lower the driving voltage and improve the light emission luminance. “The organic EL element and its industrialization front line (NST 30, November 30, 1998) The details are described in Chapter 2, “Electrode Materials” (pages 123 to 166) of the second edition of “The Company”).
  • the charge injection layer includes a hole injection layer and an electron injection layer.
  • the charge injection layer exists between the anode and the light emitting layer or the hole transport layer if it is a hole injection layer, or between the cathode and the light emitting layer or the electron transport layer if it is an electron injection layer.
  • the hole injection layer is a layer disposed adjacent to the anode, which is a transparent electrode, in order to lower the driving voltage and improve the luminance of light emission.
  • the organic EL element and its industrialization front line June 30, 1998 The details are described in Chapter 2, “Electrode Materials” (pages 123 to 166) of the second volume of “issued by TS Co., Ltd.”.
  • the details of the hole injection layer are described in JP-A-9-45479, JP-A-9-260062, JP-A-8-288069, etc.
  • materials used for the hole injection layer include: , Porphyrin derivatives, phthalocyanine derivatives, oxazole derivatives, oxadiazole derivatives, triazole derivatives, imidazole derivatives, pyrazoline derivatives, pyrazolone derivatives, phenylenediamine derivatives, hydrazone derivatives, stilbene derivatives, polyarylalkane derivatives, triarylamine derivatives, carbazole derivatives, Indolocarbazole derivatives, isoindole derivatives, acene derivatives such as anthracene and naphthalene, fluorene derivatives, fluorenone derivatives, polyvinylcarbazole, aromatic amines introduced into the main chain or side chain Child material or oligomer, polysilane, a conductive polymer or oligomer
  • Examples of the triarylamine derivative include benzidine type represented by ⁇ -NPD (4,4′-bis [N- (1-naphthyl) -N-phenylamino] biphenyl), and MTDATA (4,4 ′, 4 ′′).
  • Examples include a starburst type represented by -tris [N- (3-methylphenyl) -N-phenylamino] triphenylamine), a compound having fluorene or anthracene in the triarylamine-linked core.
  • hexaazatriphenylene derivatives described in JP-T-2003-519432 and JP-A-2006-135145 can also be used as hole transport materials.
  • the electron injection layer is a layer provided between the cathode and the light emitting layer in order to lower the driving voltage and improve the light emission luminance.
  • the cathode is composed of a transparent electrode, it is adjacent to the transparent electrode.
  • JP-A-6-325871, JP-A-9-17574, JP-A-10-74586, and the like Specific examples of materials preferably used for the electron injection layer are as follows. Metals represented by strontium and aluminum, alkali metal compounds represented by lithium fluoride, sodium fluoride, potassium fluoride, etc., alkali metal halide layers represented by magnesium fluoride, calcium fluoride, etc. Examples thereof include an alkaline earth metal compound layer typified by magnesium, a metal oxide typified by molybdenum oxide and aluminum oxide, and a metal complex typified by lithium 8-hydroxyquinolate (Liq).
  • Metals represented by strontium and aluminum alkali metal compounds represented by lithium fluoride, sodium fluoride, potassium fluoride, etc.
  • the transparent electrode is a cathode
  • an organic material such as a metal complex is particularly preferably used.
  • the electron injection layer is preferably a very thin film, and depending on the constituent material, the layer thickness is preferably in the range of 1 nm to 10 ⁇ m.
  • the hole transport layer is made of a hole transport material having a function of transporting holes, and in a broad sense, the hole injection layer and the electron blocking layer also have a function as a hole transport layer.
  • the hole transport layer can be provided as a single layer or a plurality of layers.
  • the hole transport material has characteristics of hole injection or transport and electron barrier properties, and may be either organic or inorganic.
  • triazole derivatives oxadiazole derivatives, imidazole derivatives, polyarylalkane derivatives, pyrazoline derivatives, pyrazolone derivatives, phenylenediamine derivatives, arylamine derivatives, amino-substituted chalcone derivatives, oxazole derivatives, styrylanthracene derivatives, fluorenone derivatives, hydrazone derivatives
  • Examples include stilbene derivatives, silazane derivatives, aniline copolymers, conductive polymer oligomers, and thiophene oligomers.
  • the hole transport material As the hole transport material, the above-mentioned materials can be used. Further, porphyrin compounds, aromatic tertiary amine compounds and styrylamine compounds can be used. Particularly, aromatic tertiary amine compounds are used. It is preferable to use it.
  • aromatic tertiary amine compounds and styrylamine compounds include N, N, N ′, N′-tetraphenyl-4,4′-diaminophenyl, N, N′-diphenyl-N, N′— Bis (3-methylphenyl)-[1,1′-biphenyl] -4,4′-diamine (abbreviation: TPD), 2,2-bis (4-di-p-tolylaminophenyl) propane, 1,1 -Bis (4-di-p-tolylaminophenyl) cyclohexane, N, N, N ', N'-tetra-p-tolyl-4,4'-diaminobiphenyl, 1,1-bis (4-di-p -Tolylaminophenyl) -4-phenylcyclohexane, bis (4-dimethylamino-2-methylphenyl) phenylmethane, bis (4-di-p
  • the above-described hole transport material may be a known method such as a vacuum deposition method, a spin coating method, a casting method, a printing method including an inkjet method, and an LB method (Langmuir Brodget, Langmuir Brodgett method).
  • the thin film can be formed by the method.
  • the thickness of the hole transport layer is not particularly limited, but is usually in the range of 5 nm to 5 ⁇ m, preferably in the range of 5 to 200 nm.
  • the hole transport layer may have a single structure containing one or more of the above materials.
  • the p property can be increased by doping impurities into the hole transport material constituting the hole transport layer.
  • Examples thereof include JP-A-4-297076, JP-A-2000-196140, 2001-102175 and J.P. Appl. Phys. 95, 5773 (2004), and the like.
  • the electron transport layer is made of a material having a function of transporting electrons, and in a broad sense, an electron injection layer and a hole blocking layer are also included in the electron transport layer.
  • the electron transport layer can be provided as a single layer structure or a stacked structure of a plurality of layers.
  • an electron transport material also serving as a hole blocking material
  • electrons injected from the cathode are used. What is necessary is just to have the function to transmit to a light emitting layer.
  • any one of conventionally known compounds can be selected and used. Examples include nitro-substituted fluorene derivatives, diphenylquinone derivatives, thiopyran dioxide derivatives, carbodiimides, fluorenylidenemethane derivatives, anthraquinodimethane, anthrone derivatives, and oxadiazole derivatives.
  • a thiadiazole derivative in which the oxygen atom of the oxadiazole ring is substituted with a sulfur atom, and a quinoxaline derivative having a quinoxaline ring known as an electron-withdrawing group can also be used as a material for the electron transport layer. It can. Furthermore, a polymer material in which these materials are introduced into a polymer chain, or a polymer material having these materials as a polymer main chain can also be used.
  • metal complexes of 8-quinolinol derivatives such as tris (8-quinolinol) aluminum (abbreviation: Alq 3 ), tris (5,7-dichloro-8-quinolinol) aluminum, tris (5,7-dibromo-8- Quinolinol) aluminum, tris (2-methyl-8-quinolinol) aluminum, tris (5-methyl-8-quinolinol) aluminum, bis (8-quinolinol) zinc (abbreviation: Znq), etc. and the central metal of these metal complexes
  • a metal complex replaced with In, Mg, Cu, Ca, Sn, Ga, or Pb can also be used as a material for the electron transport layer.
  • the electron transport layer can be formed by thinning the above material by a known method such as a vacuum deposition method, a spin coating method, a casting method, a printing method including an inkjet method, and an LB method.
  • the thickness of the electron transport layer is not particularly limited, but is usually in the range of 5 nm to 5 ⁇ m, preferably in the range of 5 to 200 nm.
  • the electron transport layer may have a single structure composed of one or more of the above materials.
  • blocking layer examples include a hole blocking layer and an electron blocking layer, which are provided as necessary in addition to the constituent layers of the organic functional layer unit described above. For example, it is described in JP-A Nos. 11-204258 and 11-204359, and “Organic EL elements and the forefront of industrialization (published by NTT Corporation on November 30, 1998)” on page 237. Hole blocking (hole block) layer and the like.
  • the hole blocking layer has a function of an electron transport layer in a broad sense.
  • the hole blocking layer is made of a hole blocking material that has a function of transporting electrons but has a very small ability to transport holes, and recombines electrons and holes by blocking holes while transporting electrons. Probability can be improved.
  • the structure of an electron carrying layer can be used as a hole-blocking layer as needed.
  • the hole blocking layer is preferably provided adjacent to the light emitting layer.
  • the electron blocking layer has a function of a hole transport layer in a broad sense.
  • the electron blocking layer is made of a material that has the ability to transport holes and has a very small ability to transport electrons. By blocking holes while transporting holes, the probability of recombination of electrons and holes is improved. Can be made.
  • the structure of a positive hole transport layer can be used as an electron blocking layer as needed.
  • the layer thickness of the hole blocking layer applied to the present invention is preferably in the range of 3 to 100 nm, and more preferably in the range of 5 to 30 nm.
  • the cathode is an electrode that functions to supply holes to the organic functional layer group and the light emitting layer, and a metal, an alloy, an organic or inorganic conductive compound, or a mixture thereof is used. Specifically, gold, aluminum, silver, magnesium, lithium, magnesium / copper mixture, magnesium / silver mixture, magnesium / aluminum mixture, magnesium / indium mixture, indium, lithium / aluminum mixture, rare earth metal, ITO, ZnO, TiO Oxide semiconductors such as 2 and SnO 2 .
  • the cathode can be formed as a thin film by depositing these conductive materials by vapor deposition or sputtering.
  • the sheet resistance as a cathode is several hundred ⁇ / sq.
  • the film thickness is usually in the range of 5 nm to 5 ⁇ m, preferably in the range of 5 to 200 nm.
  • a light transmissive cathode is selected and configured.
  • sealing member examples of the sealing means used for sealing the organic EL element include a method in which a sealing member, a cathode, and a transparent substrate are bonded with a sealing adhesive.
  • the sealing member only needs to be disposed so as to cover the display area of the organic EL element, and may be concave or flat. Moreover, if it is not a light extraction side, transparency and electrical insulation will not be specifically limited.
  • the sealing member include a glass plate, a polymer plate, a metal plate, and a polymer film.
  • the glass plate include soda-lime glass, barium / strontium-containing glass, lead glass, aluminosilicate glass, borosilicate glass, barium borosilicate glass, and quartz.
  • the polymer plate or polymer film include polycarbonate, acrylic, polyethylene terephthalate, polyether sulfide, and polysulfone.
  • the metal plate include one or more metals or alloys selected from the group consisting of stainless steel, iron, copper, aluminum, magnesium, nickel, zinc, chromium, titanium, molybdenum, silicon, germanium, and tantalum.
  • the sealing member a polymer film and a metal film can be preferably used from the viewpoint of reducing the thickness of the organic EL element. Furthermore, the polymer film has a water vapor transmission rate of 1 ⁇ 10 ⁇ 3 g / m 2 .multidot.m at a temperature of 25 ⁇ 0.5 ° C. and a relative humidity of 90 ⁇ 2% RH measured by a method according to JIS K 7129-1992.
  • the oxygen permeability measured by a method according to JIS K 7126-1987 is preferably 1 ⁇ 10 ⁇ 3 ml / m 2 ⁇ 24 h ⁇ atm (1 atm is 1.01325 ⁇ 10 5 a Pa) equal to or lower than a temperature of 25 ⁇ 0.5 ° C.
  • water vapor permeability at a relative humidity of 90 ⁇ 2% RH is preferably not more than 1 ⁇ 10 -3 g / m 2 ⁇ 24h.
  • an inert gas such as nitrogen or argon, or an inert liquid such as fluorocarbon or silicon oil is injected in the gas phase and liquid phase. can do.
  • the gap between the sealing member and the light emitting region of the organic EL element can be evacuated, or a hygroscopic compound can be sealed in the gap.
  • the electrical connection member according to the present invention is also called FPC (Flexible Printed Circuit), and is also called a printed circuit board (PCB, Printed Circuit Board) or a printed circuit board as shown in FIG. ) Above, printed wiring (PC) and each pad (electrically connected to each electrode constituting the organic EL panel (2) described above to supply driving power and transmit each information to the control unit) P).
  • the pads include a bezel electrode A connection pad (BZ-AP) for connecting the bezel electrode A (BZ-A), and a cathode electrode connection pad (6-P) for connecting the cathode electrode (6).
  • the organic EL module of the present invention is configured by being bonded to the organic EL panel in the arrangement.
  • the substrate constituting the printed circuit board (PCB) is not particularly limited as long as it is a transparent and flexible plastic film having sufficient mechanical strength.
  • Polyimide resin abbreviation: PI
  • polycarbonate resin ABS
  • PET polyethylene terephthalate resin
  • PEN polyethylene naphthalate resin
  • COP cycloolefin resin
  • PI polyimide resin
  • PET polyethylene terephthalate resin
  • PEN polyethylene naphthalate resin
  • COP cycloolefin resin
  • COP cycloolefin resin
  • the material constituting the printed wiring is preferably composed of a conductive metal material, and examples thereof include gold, silver, copper, and ITO. In the invention, it is preferable to form with copper.
  • PC printed wiring
  • a photoresist material or the like is applied, or a dry resist film is laminated, and a desired wiring pattern is obtained.
  • exposure is performed through a mask material or the like, development is performed, and a resist pattern is formed through an unnecessary resist stripping process.
  • a desired printed wiring pattern is formed by removing the copper layer in a region other than the mask by immersing in a copper layer etchant or applying the etchant by showering.
  • the electrical connecting member and the organic EL panel are electrically connected via a conductive member.
  • the members to be electrically connected include the bezel electrode A connection pad (BZ-AP) for connecting the bezel electrode A (BZ-A) as exemplified in FIG. 2B, the cathode electrode (6).
  • the cathode electrode connection pad (6-P) for connecting the anode electrode the pad for connecting the anode electrode (4-P) for connecting the anode electrode (4), and the bezel electrode B (BZ-B) A pad such as a bezel electrode B connection pad (BZ-BP).
  • the constituent material of the pad is not particularly limited as long as it is a member having conductivity, but is preferably an anisotropic conductive film (ACF, Anisotropic Conductive Film), a conductive paste, or a metal paste.
  • ACF anisotropic conductive film
  • anisotropic conductive film examples include a conductive film obtained by forming a layer having fine conductive particles having conductivity mixed with a thermosetting resin into a film shape.
  • the conductive particle-containing layer that can be used in the present invention is not particularly limited as long as it is a layer containing conductive particles as an anisotropic conductive member, and can be appropriately selected according to the purpose.
  • the conductive particles that can be used as the anisotropic conductive member according to the present invention are not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include metal particles and metal-coated resin particles.
  • Examples of commercially available ACFs include low-temperature curing ACFs that can also be applied to resin films, such as MF-331 (manufactured by Hitachi Chemical).
  • the metal particles include nickel, cobalt, silver, copper, gold, and palladium. These may be used individually by 1 type and may use 2 or more types together. Among these, nickel, silver, and copper are preferable. In the said metal particle, you may use the particle
  • metal-coated resin particles examples include particles in which the surface of the resin core is coated with any metal of nickel, copper, gold, and palladium. Similarly, particles having gold and palladium added to the outermost surface of the resin core may be used. Further, a resin core whose surface is coated with a metal protrusion or an organic material may be used.
  • metal paste commercially available metal nanoparticle pastes such as silver particle paste, silver-palladium particle paste, gold particle paste, and copper particle paste can be appropriately selected and used.
  • the metal paste include silver pastes for organic substrates (CA-6178, CA-6178B, CA-2500E, CA-2503-4, CA-2503N, CA-271, etc., sold by Daiken Chemical Co., Ltd.
  • Resistance value 15-30 m ⁇ ⁇ cm, formed by screen printing, curing temperature: 120-200 ° C., LTCC paste (PA-88 (Ag), TCR-880 (Ag), PA-Pt (Ag ⁇ Pt)) ), Silver paste for glass substrate (US-201, UA-302, baking temperature: 430 to 480 ° C.), and the like.
  • FIG. 8 is a drive circuit diagram showing an example (embodiment 1) of a method for driving an organic EL module.
  • the organic EL panel (2) shown in the center has an anode electrode wiring (25) and a cathode electrode wiring (26), and a diode is provided between both wirings.
  • An organic EL element (22) and a capacitor (21, Cel) are connected.
  • the anode electrode wiring (25) drawn from the anode electrode is directly connected to the light emitting element drive circuit section (23), while the cathode electrode drawn from the cathode electrode.
  • the wiring (26) is also directly connected to the light emitting element driving circuit unit (23).
  • the light emitting element driving circuit section (23) is connected to the ground (27). This ground (27) is specifically called a signal ground.
  • the light emitting element drive circuit unit (12) incorporates a constant current drive circuit or a constant voltage drive circuit, controls the light emission timing of the organic EL element, and applies reverse bias (reverse applied voltage) as necessary. It has a light emitting element driving circuit section (23).
  • the light emitting element driving circuit unit (12) in the present invention is composed of an anode electrode wiring (25), a light emitting element driving circuit section (23), and a cathode electrode wiring (26) as shown by the solid line in FIG. The circuit range.
  • an independent first bezel electrode A (BZ-A) for functioning as a detection electrode is connected via a switch 4 (SW4) to the touch detection circuit unit ( 24) and further on the lower side, the second bezel electrode B (BZ-B) is connected to the touch detection circuit section (24) via the switch 5 (SW5).
  • the touch detection circuit unit (24) is connected to the ground (27).
  • a configuration in which the switch 4 (SW4) and the switch 5 (SW5) are incorporated in the touch detection circuit unit (24) may be employed.
  • the configuration of the light emitting element driving circuit unit (23) according to the present invention is not particularly limited, and a conventionally known light emitting element driving circuit unit (organic EL element driving circuit) can be applied.
  • the light emission pattern in the organic EL element having the circuit configuration shown in FIG. 8 is a system that always emits light.
  • a time division method having a function of applying a current according to the amount of light emitted from the organic EL element, which is a light emitting element may be used between the anode electrode and the cathode electrode.
  • a constant current circuit including a step-up or step-down DC-DC converter circuit, a current value feedback circuit, a DC-DC converter switch control circuit, and the like is known.
  • FIG. 9 is a schematic circuit diagram showing an example of the configuration of the light emitting element driving circuit unit (23) according to the present invention.
  • the light emitting element drive circuit section (23) includes a step-up or step-down DC-DC converter circuit (31), a DC-DC converter switch element control circuit (32), and a current value feedback circuit (33).
  • the detection resistance is R 1 and the comparison potential is V ref
  • the anode potential of the organic EL element (22) is DC ⁇ so that the current I OLED flowing through the organic EL element (22) becomes V ref / R 1.
  • a constant current circuit can be obtained by stepping up or down the voltage by the DC converter circuit (31).
  • the configuration of the touch detection circuit unit (24) is not particularly limited, and a conventional known touch detection circuit unit can be applied.
  • the touch detection circuit is composed of an amplifier, a filter, an AD converter, a rectifying / smoothing circuit, a comparator, and the like.
  • Typical examples include a self-capacitance detection method, a series capacitance division comparison method (OMRON method), and the like.
  • OMRON method series capacitance division comparison method
  • the switches constituting the drive circuit are not particularly limited as long as they have a switch function such as an FET (field effect transistor), a TFT (thin film transistor), or the like.
  • FIG. 10 is a circuit operation diagram illustrating an example of the circuit operation in the sensing period according to the first embodiment.
  • the organic EL element (22) is always connected to the light emitting element driving circuit unit (23), continuously emits light, and is controlled by the touch detection circuit unit.
  • This is a driving method in which a sensing period appears periodically.
  • the sensing period first, in the state where the switch 4 (SW4) of the bezel electrode A (BZ-A) of the touch detection circuit unit (14) is set to “ON”, the bezel electrode A (BZ-A) which is the detection electrode.
  • the capacitance Cf1 is generated between the finger (15A) and the bezel electrode A (BZ-A) as the detection electrode, and the first touch detection A is performed.
  • the capacitance Cf1 is connected to the ground (16A, ground). 29A is a touch detection information route at the time of the first sensing.
  • the switch 5 (SW5) of the bezel electrode B (BZ-B) is in the “OFF” state.
  • the switch 4 (SW4) of the bezel electrode A (BZ-A) is set to “OFF”, and the switch 5 (SW5) of the bezel electrode B (BZ-B) is set to “ON”.
  • a capacitance Cf2 (not shown) is formed between the finger (15B) and the bezel electrode B (BZ-B) as the detection electrode.
  • the second touch detection B is performed.
  • 29B is a touch detection information route at the time of second sensing.
  • FIG. 11 is a timing chart of circuit operation in the sensing period of the first embodiment described in FIG.
  • the OLED applied voltage is always “ON” is always in the light emission state, and the entire period is the light emission period (LT).
  • SW4 and SW5 of the touch detection circuit unit (14) are sequentially “ON / OFF”, so that the sensing period (ST) can be divided into two to periodically perform touch detection.
  • FIG. 12 is a drive circuit diagram showing another example (embodiment 2) of the always-emitting organic EL module.
  • the light emitting element drive circuit section (23) is the same as the first embodiment shown in FIG.
  • the touch detection circuit unit (14) is composed of a bezel electrode A (BZ-A) and a bezel electrode B (BZ-B) as in the first embodiment.
  • Each bezel electrode is an independent touch detection circuit. Connected to the units (24 and 25), and each touch detection is controlled independently. Accordingly, SW4 and SW5 in Embodiment 1 shown in FIG. 10 are not necessary.
  • the sensing method is the same as in the first embodiment.
  • Embodiment 3 Time division method in which the light emission period and the touch sensing period are separated
  • Embodiment 3 is a time-division type organic EL module in which the light emission period (LT) of the organic EL panel controlled by the light emitting element drive circuit unit and the touch sensing period (ST) controlled by the touch detection circuit unit are separated. 1).
  • FIG. 13 is a drive circuit diagram of the time-division type organic EL module (1) in which the light emission period (LT) and the touch sensing period (ST) are separated.
  • the organic EL panel (2) shown in the center has an anode electrode wiring (25) and a cathode electrode wiring (26), and a diode is provided between both wirings.
  • An organic EL element (22) and a capacitor (21, Cel) are connected.
  • the anode electrode wiring (25) for organic EL element light emission led out from the anode electrode is connected to the light emitting element drive circuit unit (23) via the switch 1 (SW1).
  • the cathode electrode wiring (26) drawn from the cathode electrode is connected to the light emitting element drive circuit section (23) via the switch 2 (SW2). Further, the light emitting element driving circuit section (23) is connected to the ground (27).
  • the light emitting element driving circuit unit (12) incorporates a constant current driving circuit or a constant voltage driving circuit, controls the light emission timing of the organic EL element, and applies reverse bias (reverse applied voltage) as necessary. And a light emitting element driving circuit portion (23).
  • the light emitting element driving circuit unit (23) and SW1 and SW2 are shown as independent components. However, the switch 1 (SW1) is connected to the light emitting element driving circuit unit (23) as necessary. ) Or switch 2 (SW2) may be incorporated.
  • the light emitting element driving circuit unit (12) in the configuration shown in FIG. 13 is a circuit range including the anode electrode wiring (25), SW1, the light emitting element driving circuit unit (23), SW2, and the cathode electrode wiring (26).
  • the touch detection circuit unit (14) shown on the right side touches via the switch 4 (SW4) in order to cause the first bezel electrode A (BZ-A) described in FIG. 8 to function independently as a detection electrode. It is connected to the detection circuit section (24). Further, as explained in FIG. 8, the second bezel electrode B (BZ-B) is connected to the touch detection circuit section (24) via the switch 5 (SW5) at the bottom. .
  • the anode electrode wiring 2 (25A) drawn out from the anode electrode is connected to the touch detection circuit unit (24) via the switch 3 (SW3), and the touch detection electrode group Is configured.
  • the touch detection circuit unit (24) is connected to the ground (27).
  • the switch 3 (SW3), the switch 4 (SW4), and the switch 5 (SW5) may be incorporated in the touch detection circuit unit (24).
  • the light emission period (LT) of the organic EL panel controlled by the light emitting element driving circuit unit (12) and touch detection are controlled by ON / OFF control of each switch.
  • the touch sensing period (ST) controlled by the circuit unit (14) can be separated and driven, and the touch sensor function can be expressed in the organic EL module.
  • FIG. 14 shows the state of the drive circuit diagram in the light emission period (LT) of the organic EL panel.
  • FIG. 15 shows a drive circuit diagram in the touch sensing period (ST) of the organic EL panel.
  • SW3 and SW5 which are switches for controlling the drive of the touch detection circuit unit (14) are turned on by SW1 and SW2.
  • the state is set to “OFF”, and after SW1 and SW2 are set to “OFF”, as shown in FIG.
  • the timing at which SW3 is turned “ON” is preferably set to “ON” after a predetermined standby time (t) has elapsed after SW1 and SW2 described above are turned “OFF”.
  • the standby period (t) is preferably in the range of about 0 ⁇ to 5 ⁇ of the charge / discharge time constant ⁇ of the organic EL element.
  • FIG. 16 is a timing chart of a method in which the light emission period and the touch sensing period in the third embodiment are time-divided.
  • the period from when SW1 and SW2 are turned “ON” to when it is turned “OFF” is the light emission period (LT), and SW1 and SW2 are turned “OFF” and the standby time (t , (Not shown), SW 4, SW 3, SW 5 are sequentially set to “ON” and “OFF”, touch detection is performed, and the period from when SW 5 is turned “OFF” is the sensing period (ST), LT + ST is referred to as one frame period (1FT).
  • the light emitting period (LT), touch sensing period (ST), and one frame period (1FT) in the organic EL module of the present invention are not particularly limited, and conditions suitable for the environment to be applied can be appropriately selected.
  • the light emission period (LT) of the organic EL element is 0.1 to 2.0 msec.
  • the touch sensing period (ST) is 0.05 to 0.3 msec.
  • the one frame period (1FT) can be in the range of 0.15 to 2.3 msec.
  • the one frame period (1FT) is preferably 60 Hz or more for the purpose of reducing flicker.
  • the touch detection method in the touch sensing period of the timing chart shown in FIG. 16 is as described above, and “ON” and “OFF” of the switch 4 (SW4) of the bezel electrode A (BZ-A) ⁇ the anode detection electrode (25A ) Switch 3 (SW3) “ON” and “OFF” ⁇ Bezel electrode B (BZ-B) switch 5 (SW5) switch “ON” and “OFF” while touching with fingers (15A to 15C)
  • SW4 of the bezel electrode A (BZ-A) ⁇ the anode detection electrode (25A )
  • Switch 3 Switch 3
  • B Bezel electrode B
  • switch 5 switch “ON” and “OFF” while touching with fingers
  • the bezel electrode B (BZ-B) ⁇ the anode detection electrode (25A) ⁇ the bezel electrode A ( BZ-A) Scrolls pages and screens from bottom to top by detecting Cf changes while switching each switch between “ON” and “OFF”. Can Lumpur.
  • a tap operation can be performed by detecting a change in Cf of only the anode detection electrode (25A), and a double tap can be detected by detecting a change in Cf with a time difference.
  • FIG. 17 is a timing chart showing another example of the light emission period and the sensing period in the embodiment 3.
  • the switch 4 (SW4) of the bezel electrode A (BZ-A) and the bezel electrode A mode in which the sensing period by the switch 5 (SW5) of B (BZ-B) overlaps with the light emission period (LT) of the organic EL element is shown. That is, it is a method of performing sensing with the bezel electrode during the light emission period (LT) of the organic EL element.
  • FIG. 18 is a drive circuit diagram showing another example (embodiment 4) of the time-division type organic EL module in which the light emission period and the touch sensing period are separated.
  • the light-emitting element drive circuit unit (23) is the same as that of the third embodiment shown in FIGS. 13 to 15, and the light emission period of the organic EL element is set by “ON” and “OFF” of SW1 and SW2. Control.
  • the electrode configuration for touch detection in the touch detection circuit unit (14) is the same as in the third embodiment, with the bezel electrode A (BZ-A), the bezel electrode B (BZ-B), and the anode detection electrode (25A).
  • the bezel electrode (BZ-A and BZ-B) and the anode detection electrode (25A) are connected to individual touch detection circuit units (24 to 26), respectively, and each touch detection is performed independently. And control it.
  • SW4 and SW5 as shown in FIG. 13 are unnecessary in the circuit of the bezel electrode A (BZ-A) and the bezel electrode B (BZ-B).
  • the sensing method is the same as the method shown in FIGS. 16 and 17 of the third embodiment.
  • the organic EL module of the present invention can achieve small formatting and thinning, can achieve simplification of the process, and can be suitably used for various smart devices and lighting devices such as smartphones and tablets.
  • Smart device As shown in FIGS. 5 to 7 described above, for example, it can be provided as a smart device (100) including the organic EL module of the present invention on the sub-display screen on the back side.
  • the organic electroluminescence module of the present invention is an organic electroluminescence module having an organic electroluminescence element having a light emitting function and a scroll operation and a tap operation, and can be suitably used for various smart devices such as smartphones and tablets.

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  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

La présente invention aborde le problème de la fourniture d'un module électroluminescent organique qui a un élément électroluminescent organique pourvu d'une fonction électroluminescente ainsi que des capacités de défilement et de toucher et un dispositif intelligent qui est équipé du module électroluminescent organique. Ce module électroluminescent organique possède un panneau électroluminescent organique et un organe de connexion électrique. Le module électroluminescent organique est caractérisé en ce que : le panneau électroluminescent organique possède un élément électroluminescent organique qui possède une structure ; un groupe de couches fonctionnelles organiques comprenant une couche électroluminescente étant prise en sandwich entre une paire d'électrodes comprenant une anode et une cathode et au moins une électrode de contour d'écran qui ne contribue pas à l'émission de lumière et est disposée dans une région de contour d'écran servant en tant que région non électroluminescente ; l'organe de connexion électrique comporte des lignes d'alimentation en énergie électrique à l'anode et à la cathode du panneau électroluminescent organique et une ligne de signal à l'électrode de contour d'écran ; et l'organe de connexion électrique est électriquement connecté au panneau électroluminescent organique par l'intermédiaire d'un organe électriquement conducteur.
PCT/JP2016/058584 2015-05-13 2016-03-17 Module électroluminescent organique et dispositif intelligent WO2016181704A1 (fr)

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CN110928078A (zh) * 2019-12-12 2020-03-27 厦门天马微电子有限公司 一种显示面板及其制备方法、显示装置
CN112528933A (zh) * 2020-12-22 2021-03-19 厦门天马微电子有限公司 一种柔性线路板、显示装置及其制作方法

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CN112528933A (zh) * 2020-12-22 2021-03-19 厦门天马微电子有限公司 一种柔性线路板、显示装置及其制作方法
CN112528933B (zh) * 2020-12-22 2022-09-27 厦门天马微电子有限公司 一种柔性线路板、显示装置及其制作方法

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