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WO2018123887A1 - Affichage électroluminescent organique à matrice passive et procédé de détection tactile - Google Patents

Affichage électroluminescent organique à matrice passive et procédé de détection tactile Download PDF

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Publication number
WO2018123887A1
WO2018123887A1 PCT/JP2017/046177 JP2017046177W WO2018123887A1 WO 2018123887 A1 WO2018123887 A1 WO 2018123887A1 JP 2017046177 W JP2017046177 W JP 2017046177W WO 2018123887 A1 WO2018123887 A1 WO 2018123887A1
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Prior art keywords
touch detection
organic
anode
cathode
touch
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Ceased
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PCT/JP2017/046177
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English (en)
Japanese (ja)
Inventor
一由 小俣
司 八木
正利 米山
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Konica Minolta Inc
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Konica Minolta Inc
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06—COMPUTING OR CALCULATING; 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
    • 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
    • H05B33/12—Light sources with substantially two-dimensional radiating surfaces
    • H05B33/26—Light sources with substantially two-dimensional radiating surfaces characterised by the composition or arrangement of the conductive material used as an electrode
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/17—Passive-matrix OLED displays

Definitions

  • the present invention relates to a passive matrix organic electroluminescence display having a light emitting function and a touch detection function, and a touch detection method using the same.
  • a light emitting diode using a light guide plate Light Emitting Diode (hereinafter abbreviated as “LED”)
  • an organic light emitting diode hereinafter referred to as an “organic electroluminescence element”. Or abbreviated as “OLED”).
  • organic electroluminescence element (hereinafter also referred to as an “organic EL element”) using electroluminescence of an organic material is a thin-film type complete solid-state element capable of emitting light at a low voltage of about several V to several tens V. It attracts attention as a surface light emitter.
  • Organic EL elements are also called organic electroluminescence displays (hereinafter referred to as “organic EL displays”), which are one of flat panel displays (FPDs), due to advances in material technology, manufacturing technology, drive circuit technology, and the like. It has been put to practical use.
  • an icon part which is a common function key button provided at 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.
  • an electrostatic capacitance type information input unit using an LED light source for example, an air layer having the same shape between the flexible printed circuit board on which the sensor electrode is formed and the front panel at a position avoiding the icon portion
  • an adhesive layer having a higher dielectric constant is provided (for example, see Patent Document 2).
  • this configuration by increasing the sensitivity of the sensor electrode, the user's input operation can be stably processed, and the detection accuracy of the capacitance at the detection electrode can be improved.
  • organic EL device a method using a surface-emitting organic electroluminescence device (hereinafter also referred to as “organic EL device”) from the viewpoint of reducing power consumption and improving uniformity of light emission luminance. Is attracting attention.
  • organic EL device a mark or the like is formed in advance on the cover glass side constituting the icon portion, and the organic EL device is arranged on the back side of the corresponding formation portion, so that the display function can be expressed. it can.
  • a capacitive detection device for touch detection is arranged on the lower surface side of the cover glass and has a touch detection function. It is known to do.
  • ⁇ Devices with this touch detection function often use a film / film type touch sensor that has been enlarged to the same size as a cover glass and laminated.
  • a glass / glass type may be used.
  • a capacitance method is often used in recent years.
  • a “projection type capacitance method” is used in each of the x-axis and y-axis directions.
  • a method in which a fine electrode pattern is arranged is employed. In this method, touch detection of two or more points called “multi-touch detection” is possible.
  • the anode, the cathode, or the metal foil layer used for protection constituting the organic EL element is a change in the capacitance of the surface capacitance method described above.
  • a capacitance type detection circuit is formed on the flexible substrate as an assembly on the light emitting surface side together with the organic electroluminescence panel.
  • An electrical connection unit provided with a wiring portion for example, a touch detection electrode for detecting a touch function configured by a flexible printed circuit (abbreviation: FPC) needs to be arranged in another configuration, and the configuration has a great restriction. .
  • FPC flexible printed circuit
  • the organic EL element which is a light emitting device, and the wiring material for controlling the driving thereof are efficiently arranged, have high touch detection accuracy, achieve miniaturization and thinning, and have suitability for smart devices. Development of a passive matrix type organic electroluminescence display is required.
  • the present invention has been made in view of the above problems and situations, and a solution to the problem is an organic electroluminescence display having a plurality of electrodes having a light emitting function and a touch detection function, and controlling the driving thereof.
  • an organic electroluminescence display in which wiring materials are efficiently arranged, high touch detection accuracy can be achieved, miniaturization and thinning, and cost reduction by simplification of the process, and a touch detection method thereof are provided. is there.
  • the present inventor is a passive matrix type organic electroluminescence display having a light emitting function and a touch detection function, including one or more cathodes and one or more cathodes.
  • the cathode and anode both function as touch detection electrodes, the light emission period and the touch detection period are separated in time, and the influence of parasitic capacitance between the anode and cathode is eliminated during the touch detection period. It has been found that the above-mentioned problems can be solved by the passive matrix organic electroluminescence display that has been achieved, and the present invention has been achieved.
  • a passive matrix organic electroluminescence display having a light emitting function and a touch detection function, M (M is an integer of 1 or more) cathodes; N (N is an integer of 1 or more) anodes, The cathode and anode function as touch detection electrodes, The light emission period of the organic electroluminescence element and the touch detection period by the touch detection electrode are separated in time, A passive matrix organic electroluminescence display in which the influence of parasitic capacitance between the anode and the cathode is eliminated during the touch detection period.
  • a touch detection method using a passive matrix organic electroluminescence display having a light emitting function and a touch detection function The passive matrix organic electroluminescence display has M (M is an integer of 1 or more) cathodes and N (N is an integer of 1 or more) anodes, The cathode and anode function as touch detection electrodes, Separating temporally the light emission period of the organic electroluminescence element and the touch detection period by the touch detection electrode, A touch detection method for performing touch detection during the touch detection period by eliminating the influence of parasitic capacitance between the anode and the cathode.
  • Item 6 or Item 7 is a method in which, during the touch detection period, the method of eliminating the parasitic capacitance between the anode and the cathode is a method of applying a voltage having the same detection waveform to an electrode to be touch-detected and all electrodes intersecting with the electrode. Touch detection method according to claim 1.
  • each of the cathode and the anode constituting the passive matrix organic electroluminescence display is composed of two or more.
  • an organic EL display having a plurality of electrodes having both a light emitting function and a touch detection function, the wiring material for controlling the drive is efficiently arranged, and high touch detection accuracy can be achieved. Further, it is possible to provide an organic EL display that achieves cost reduction by miniaturization and thinning, and simplification of the process, and a touch detection method thereof.
  • FIG. 1 A pair of electrode units arranged for driving (for light emission) of the organic EL elements that constitutes the structure, and a touch detection electrode for touch detection of another layer at a position separated from the electrode unit, and a light emitting function And the touch detection function need to be configured by separate assemblies.
  • FIG. 2 an in-cell method is known in which an organic EL element has a touch electrode as a separate electrode in an organic EL display.
  • the conventional organic EL display configured as shown in FIG. 1 and FIG. 2 has low touch detection accuracy, and in addition, increases in the number of manufacturing processes and complexity due to an increase in the number of constituent layers and the number of pins of the driving IC. As a result, the increase in cost and thickness has been an obstacle to the small format and low price.
  • the organic EL display of the present invention is a passive matrix in-cell type that uses the anode and cathode constituting the organic EL element as touch detection electrodes, as shown in FIG.
  • This is an organic EL display, in which a touch detection circuit unit and a light emitting element drive circuit unit are connected to each electrode.
  • the light emitting element drive circuit unit and the touch detection circuit unit are provided independently, and the touch detection period and the light emission period are separated in a time-sharing (time series) manner.
  • a method of applying a voltage with the same detection waveform to the M anodes and the N cathodes, or during the touch detection period In order to eliminate the parasitic capacitance between the anode and the N cathodes, by applying a voltage of the same detection waveform to the electrode for touch detection and all the electrodes intersecting with the electrode, high accuracy can be obtained in the subdivided region. Touch detection is now possible.
  • Timing chart of touch detection period showing an example (embodiment 1) of the touch detection method in the organic EL display of the present invention
  • Timing chart of touch detection period showing another example (embodiment 2) of the touch detection method in the organic EL display of the present invention
  • the schematic diagram which shows an example of the control method and waveform in the touch detection of Embodiment 2
  • Timing chart of touch detection period showing another example (embodiment 3) of the touch detection method in the organic EL display of the present invention
  • Schematic which shows an example of a structure of the timing chart of the whole organic electroluminescent display which concerns on Embodiment 1.
  • FIG. Schematic which shows an example of a structure of the timing chart of the whole organic electroluminescent display which concerns on Embodiment 2 and 3
  • the organic EL display of the present invention is a passive matrix organic EL display having a light emitting function and a touch detection function, and includes M (M is an integer of 1 or more) cathodes and N (N is 1 or more).
  • M is an integer of 1 or more
  • N is 1 or more.
  • the cathode and the anode function as a touch detection electrode, the light emission period of the organic electroluminescence element and the touch detection period by the touch detection electrode are separated in time, and the touch detection period In the configuration, the influence of the parasitic capacitance between the anode and the cathode is eliminated. This feature is a technical feature common to the claimed invention.
  • the influence of the parasitic capacitance between the anode and the cathode is eliminated during the touch detection period means that the potential fluctuation amount applied to the anode is applied to the cathode during the touch detection period. This is a state in which the displacement current is equal to the amount of potential fluctuation and no displacement current flows between both electrodes.
  • the embodiment of the present invention has a configuration in which M cathodes and N anodes are orthogonally arranged as shown in FIG. 5 to be described later, from the viewpoint that the effects of the present invention can be further manifested. This is preferable in that touch detection can be realized with higher accuracy.
  • the cathode and the anode are each composed of two or more in terms of touch detection with higher accuracy.
  • the touch detection method of the present invention is a touch detection method using a passive matrix organic EL display having a light emitting function and a touch detection function
  • the passive matrix organic EL display includes M (M is 1 and an anode of N (N is an integer of 1 or more), the cathode and the anode function as a touch detection electrode, the light emitting period of the organic EL element, and the touch
  • M is 1 and an anode of N (N is an integer of 1 or more)
  • the cathode and the anode function as a touch detection electrode the light emitting period of the organic EL element
  • the touch detection period by the detection electrode is temporally separated, and the touch detection is performed during the touch detection period by eliminating the influence of the parasitic capacitance between the anode and the cathode.
  • the “organic EL element” refers to an element composed of a pair of an anode, a cathode and an organic functional layer unit
  • the “organic EL panel” refers to a sealing adhesive for the organic EL element.
  • the “organic EL display” is a structure in which a touch detection circuit unit and a light emitting element drive circuit unit are connected to an organic EL panel by an electrical connection member, and a light emitting function and a touch detection function. The composition which has both.
  • the “light emitting area” refers to a region having at least an anode, an organic functional layer unit including a light emitting layer, and a cathode on the same plane.
  • the organic EL display of the present invention is an organic EL display in which an electrical connection member is joined to an organic EL panel, and the electrical connection member includes a touch detection circuit unit and a light emitting element drive circuit unit that drives the organic EL panel.
  • the organic EL panel has a cathode and an anode as a pair of planar electrodes at opposed positions inside, and the pair of electrodes are connected to a light emitting element driving circuit unit, and the pair of electrodes Any one of these is a touch detection electrode, and the touch detection electrode is connected to the touch detection circuit unit.
  • FIG. 1 is a schematic cross-sectional view showing an example of the configuration of an out-cell organic EL display, which is a conventional organic EL display.
  • the “out-cell method” means a configuration in which the touch detection electrode (10) is arranged at a position separated from the organic EL panel (2).
  • the organic EL display (1) shown in FIG. 1 has an anode (4, anode) and at least a light-emitting layer on a transparent substrate (3).
  • a hole injection layer and a hole transport layer An organic functional layer unit (5) composed of an electron transport layer, an electron injection layer, etc. is laminated, and a cathode (6, cathode) is laminated on top of the organic functional layer unit (5).
  • EL The outer peripheral portion of the organic EL element (EL) is sealed with a sealing adhesive (7), and on its surface, harmful gas (oxygen, moisture, etc.) from the external environment is prevented from penetrating into the light emitting portion.
  • the sealing member (8) is arrange
  • a light emitting element drive circuit unit (11) for controlling light emission is connected between an anode (4) and a cathode (6) which are a pair of electrodes. Moreover, the electrical connection which provided the capacitive touch detection circuit and the wiring part on the surface on the opposite side to the surface in which the organic EL panel (2) of the transparent base material (3) was formed, for example.
  • a touch detection electrode (10) constituted by a unit (flexible printed circuit) is provided, and the touch detection electrode (10) is provided with a touch detection circuit unit (12) for detecting a touch (finger touch).
  • the touch detection unit (9) is configured.
  • FIG. 2 is a schematic cross-sectional view showing a configuration in which a touch detection electrode is provided as a separate layer in the organic EL panel (2) in a conventional in-cell organic EL display as a comparative example.
  • the “in-cell method” refers to a configuration in which a touch detection electrode is provided inside the organic EL panel (2) as shown in FIG.
  • the touch detection electrode (10) is separated from the anode (4) and the cathode (6) as counter electrodes in the organic EL panel (2). With the structure provided at the position, it is arranged in a state of being electrically separated and insulated from the anode (4) through the insulating layer (13).
  • Other configurations are the same as those described with reference to FIG.
  • FIG. 3 is a schematic sectional view showing an example of the configuration of the passive matrix in-cell organic EL display of the present invention.
  • the “passive matrix type” here is also called “passive matrix type matrix drive”, and as shown in FIG. 6 described later, a plurality of columns (rows, anodes) and row (rows, cathodes) electrodes are used.
  • the bias voltage is simultaneously applied to the signal electrode and the scanning electrode from the end of the electrode, and the light emitting layer of the organic EL element between the electrodes emits light.
  • an anode (4) and an organic functional layer unit (5) similar to those in FIG. 1 are laminated on a transparent substrate (3), and an organic functional layer unit (5
  • the cathode (6) is laminated on the upper portion of the organic EL element (EL).
  • the outer peripheral portion of the organic EL element (EL) is sealed with a sealing adhesive (7), and a sealing member (8) is disposed on the surface thereof to constitute the organic EL panel (2).
  • the anode (4) and the cathode (6) are electrodes that function as a counter electrode that emits light from the organic EL element and also have a function as a touch detection electrode.
  • a light emitting element drive circuit unit (11) for controlling light emission is connected between the anode (4) and the cathode (6).
  • the anode (4) further functions as a touch detection electrode, and a touch detection circuit unit (12) for detecting a touch (finger touch) is connected thereto.
  • FIG. 3 shows a configuration in which the anode (4) also serves as the touch detection electrode, but the cathode (6) may function as the touch detection electrode.
  • the light emitting element driving circuit unit (11) shown in FIG. 3 for controlling light emission is not particularly limited in its configuration, and a conventional known light emitting element driving circuit unit (also referred to as an organic EL element driving circuit) is applied. can do.
  • a light emitting element driving circuit has a function of applying a current corresponding to a light emission amount of an organic EL element, which is a light emitting element, between an anode and a cathode, for example, in accordance with a preset light emitting pattern of the light emitting element. Is.
  • 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.
  • a touch detection circuit includes an amplifier, a filter, an AD converter, a rectifying / smoothing circuit, a comparator, and the like. Typical examples thereof include a self-capacitance detection method, a series capacitance division comparison method (OMRON method), and the like. be able to. Reference can also be made to touch detection circuits described in JP 2012-073783 A, JP 2013-088932 A, JP 2014-053000 A, and the like.
  • FIG. 4A is a schematic diagram showing an example of the arrangement of anodes and cathodes in the organic EL display of the present invention.
  • the cathodes are arranged in an intersecting configuration, and these electrodes function as touch detection electrodes together with the light emitting electrodes.
  • FIG. 4A only the wiring is displayed on the cathode and the anode.
  • a region where N rows of cathodes arranged in the horizontal direction and M columns of anodes arranged in the vertical direction are overlapped is one “light emission / detection unit (light emission / detection unit). Detection area) ”.
  • the feature of the organic EL display having such a function is that the cathode and the anode also function as a touch detection electrode, and the touch detection period and the light emission period are separated by time division.
  • one characteristic is that the voltage of the same detection waveform is applied to all the cathodes and anodes. At this time, when there are a plurality of anodes or cathodes, a method of detecting them by bundling them may be used.
  • first row detection ⁇ second row detection ⁇ ... ⁇ N row detection ⁇ first column detection ⁇ second column detection ⁇ ... ⁇ M column detection When the first row is detected, the same detection waveform is obtained in the 1st to Mth columns, and the same detection waveform or Hi-Z is obtained in the 2nd to Nth rows.
  • Hi-Z is also referred to as a high impedance (high resistance value) state, and since impedance is displayed in Z, it is displayed as Hi-Z.
  • This high impedance is a state where the circuit is open (open), that is, a so-called disconnected state.
  • the present invention if a plurality of touch electrode wirings in the same row or column as the touch detection electrodes function simultaneously, normal touch detection cannot be performed. It is necessary to cut, and for this purpose, accurate touch detection can be performed by setting the electrode wiring to be cut into a high impedance state (Hi-Z).
  • the contact capacitance between the finger and the touch detection electrode (here, the anode) is Cf
  • the parasitic capacitance between the cathode 1, the cathode 2 and the cathode 3 is Cel.
  • Cel> Cf the capacity of the anode is “3 Cel + Cf ⁇ 3 Cel” when there is a finger touch, and “3 Cel” when there is no finger touch.
  • cathode 2 and cathode 3 it becomes possible to set “Cf” when there is a finger touch and “0” when there is no finger touch. Can be detected.
  • FIG. 5 is a schematic perspective view showing an example of the arrangement of a plurality of anodes and a plurality of cathodes in the organic EL device according to the present invention.
  • M anodes (4) of 1 to M rows are arranged in a stripe shape, and an organic functional layer unit (5) including a light emitting layer is formed on the entire surface. Further thereon, N stripe-like cathodes (6) from 1 to N rows are arranged in an arrangement orthogonal to the anode (4) to constitute an organic EL element (EL).
  • EL organic EL element
  • a region U where all of the anode (4), the organic functional layer unit (5), and the cathode (6) are present on the same plane is a “light emission / touch detection region”.
  • FIG. 6 is a block diagram showing a schematic configuration of an organic EL display including a plurality of cathodes and anodes.
  • the region (21) for light emission and touch detection has a plurality of organic EL elements (EL) arranged in a matrix and capacitors (24).
  • the plurality of cathode wirings (6A) in the first to N rows are connected to the row driver (22), and the plurality of anode wirings (4A) in the first to M columns are connected to the column driver (21). A predetermined voltage is applied to each designated electrode wiring. Further, the row driver (22) and the column driver (21) are connected to the control unit (23) and control the application of voltage to each driver.
  • a region (U) including a set of organic EL elements (EL) and a capacitor (24) connected to one cathode wiring (6A) and anode wiring (4A) is one light emission / touch detection. It is a unit (one light emitting element unit).
  • the light emission period (LT) in which the organic EL panel controlled by the light emitting element driving circuit unit (11) emits light and the touch detection period (ST) controlled by the touch detection circuit unit (12). ) are separated and driven.
  • a period composed of the light emission period (LT) and the touch detection period (ST) is referred to as one frame period (1FT).
  • FIG. 7 is an overall timing chart showing an example of the light emission period and the touch detection period in the block diagram shown in FIG.
  • connection is made to one cathode wiring (6A) and anode wiring (4A) while sequentially applying a voltage in units of rows while being controlled by the light emitting element driving circuit unit (11).
  • One set of organic EL elements (EL) is caused to emit light.
  • the touch detection circuit unit (12) is used to shift to the touch detection period (ST). A detailed control method in the touch detection period will be described later.
  • the light emission period (LT), touch detection period (ST), and one frame period (1FT) in the organic EL display 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 OLED is 1 / N duty as the light emission period per row.
  • One frame period (1FT) is preferably in the range of 16.67 msec or less.
  • the one frame period (1FT) is preferably 60 Hz or more for the purpose of reducing flicker.
  • FIG. 8 is a timing chart of the touch detection period showing an example (embodiment 1) of the touch detection method in the organic EL display of the present invention. The scan is not performed and the voltage of the same detection waveform is applied to all the touch electrodes at once. It is a method of applying and detecting touch. In the method shown in Embodiment 1, it is necessary to provide a touch detection circuit unit (12) for each touch detection region (U). That is, in the configuration shown in the block diagram of FIG. 6, N + M touch detection circuit units (12) are connected to perform touch detection for each detection region (U).
  • the touch detection circuit units (12) increases, but all electrodes in the 1st row to the Nth row and the 1st column to the Mth column are collectively collected without scanning.
  • the touch detection can be performed. That is, the touch detection period (ST) in one frame period (1FT) can be set short.
  • Embodiment 2 A method of scanning and sequentially detecting a touch by applying a voltage of the same detection waveform to all touch electrodes]
  • a method of performing touch detection by applying a voltage having the same detection waveform to the anode and the cathode is a preferable aspect.
  • FIG. 9 is a timing chart showing a touch detection period showing an example (embodiment 2) of the touch detection method in the organic EL display of the present invention.
  • the touch detection is performed by sequentially scanning while all the touch electrodes (M anodes (4) and N cathodes (6)) are applied with the voltage of the same detection waveform.
  • the number of scans depends on the number of touch detection circuit units incorporated.
  • FIG. 10 is a schematic diagram illustrating an example of a touch detection control method and a waveform in a detection period according to the second embodiment.
  • Each touch electrode (1 row to N row, 1 column to M column) is connected to one detection circuit, and a switch (Sw1 row to SwN) for controlling touch detection is provided between each touch electrode and the detection circuit.
  • Row, Sw1 column to SwM column) are arranged.
  • the touch electrode and the touch detection circuit unit are connected to perform touch detection. For example, with all the switches turned off, as a first step, the first switch Sw1 row of the cathode is turned “ON” and connected to the touch detection circuit unit to perform touch detection. As the second step, the switch Sw1 row is set to “off”, the second switch Sw2 row of the cathode is set to “on”, and the touch detection circuit unit is connected to perform touch detection. Such an operation is sequentially connected to the detection circuit unit via each switch from the third row of the cathode to the M column of the anode, and touch detection is performed.
  • a waveform having the same potential as that of the detection waveform is applied to all the touch electrodes even during a period when the touch detection circuit unit is not connected.
  • a touch electrode that performs touch detection and a voltage having the same detection waveform are applied to the electrode group orthogonal to the electrode, and other electrodes parallel to the touch electrode to be detected
  • the group is a method of performing touch detection while scanning with the same detection waveform (floating potential) or Hi-Z state.
  • FIG. 11 is a timing chart of the touch detection period showing an example (embodiment 3) of the touch detection method in the organic EL display of the present invention.
  • the method shown in FIG. 11 shows an example of a method for performing touch detection by setting the other electrode group parallel to the touch electrode to be detected to the Hi-Z state.
  • the Hi-Z state is also referred to as a high impedance (high resistance value) state.
  • the impedance In order to display the impedance as Z, it is displayed as Hi-Z.
  • This high impedance is a state in which the circuit is released (opened), that is, a state in which the circuit is disconnected.
  • normal touch detection cannot be performed. It is necessary to cut, and for this purpose, accurate touch detection can be performed by setting the electrode wiring to be cut into a high impedance state.
  • a voltage with the same detection waveform is applied.
  • the 1st, 3rd to Mth rows which are the anodes parallel to the second row, are set as the Hi-Z state and are not involved in touch detection. Such an operation is performed up to the Mth column.
  • touch detection is performed with the cathodes in the 1st to Nth rows.
  • the same detection is performed on the cathode of the first row and the anodes of the first to Mth columns which are anode groups orthogonal to the cathode of the first row. Apply waveform voltage.
  • the second row name to the Nth row, which are the cathodes parallel to the first row are set as the Hi-Z state so as not to be involved in touch detection. Thereafter, the same operation is performed for the second to Nth rows, and touch detection is performed by the scanning method.
  • FIGS. 12A and 12B are schematic diagrams showing a time structure of a timing chart of the entire organic EL display of the present invention.
  • FIG. 12A shows a time structure in the first embodiment.
  • a voltage having the same detection waveform is applied to all the electrodes, and touch detection is performed without scanning, and N + M touch detection circuit units (12) are provided for each touch detection region (U). This is a method that enables batch detection without scanning.
  • the touch detection period (ST) occupying within one frame period (1FT) can be set short, and a longer light emission period (LT) can be secured.
  • one frame period (FT) is 60 Hz or more and 16.67 msec. It becomes.
  • the time structure of the timing chart shown in FIG. 12B shows an example of the embodiment 2 and the embodiment 3.
  • the touch detection is performed by scanning each row (cathode) and column (anode) using one touch detection circuit unit.
  • the touch detection period (ST) becomes longer, and the light emission period (LT) becomes shorter due to the influence.
  • the number of detection circuits is reduced with respect to the number of rows and columns, and a single touch detection circuit unit can be handled.
  • the configuration is extremely simple, and the manufacturing cost can be kept low.
  • the organic EL panel (2) constituting the organic EL display (1) includes, for example, an anode (4, anode) and an organic functional layer unit (on the transparent substrate (3) as illustrated in FIG. 5) are laminated to form a light emitting region.
  • a cathode (6, cathode) is laminated on the organic functional layer unit (5) to constitute an organic EL element.
  • the outer peripheral portion of the organic EL element is sealed with a sealing adhesive (7), and a sealing member (8) is disposed on the surface thereof to constitute the organic EL panel (2).
  • 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) preferably used include glass, quartz, and a resin film.
  • transparent as used in the present invention means that the average light transmittance in the visible light region is 60% or more, preferably 70% or more, and more preferably 80% 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 (PET) and polyethylene naphthalate (PEN), polyethylene, polypropylene, cellophane, cellulose diacetate, cellulose triacetate (TAC), cellulose acetate butyrate, cellulose acetate pro Cellulose esters such as pionate (CAP), cellulose acetate phthalate, cellulose nitrate and their derivatives, polyvinylidene chloride, polyvinyl alcohol, polyethylene vinyl alcohol, syndiotactic polystyrene, polycarbonate, norbornene resin, polymethylpentene, polyether Ketone, polyimide, polyethersulfone (PES), polyphenylene sulfide, poly Cyclones such as luphones, polyetherimide, polyetherketoneimide, polyamide, fluororesin, nylon, polymethylmethacrylate, acrylic and polyarylates, Arton (trade name, manufactured by JSR) and Appel (trade
  • 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 and an intermediate electrode constituting an organic EL element As an anode and an intermediate electrode constituting an organic EL element, a metal such as Ag or Au or an alloy containing a metal as a main component, a composite oxide of CuI, indium-tin (ITO), a metal oxide such as SnO 2 or ZnO
  • a metal such as Ag or Au or an alloy containing a metal as a main component, a composite oxide of CuI, indium-tin (ITO), a metal oxide such as SnO 2 or ZnO
  • the metal or an alloy containing a metal as a main component is preferable, and silver or an alloy containing silver as a main component is more preferable.
  • the organic EL display of this embodiment is configured to extract emitted light from at least the anode, the anode and the intermediate electrode are transparent electrodes.
  • the transparent electrode is composed mainly of silver
  • the purity of silver is preferably 99% or more.
  • palladium (Pd), copper (Cu), gold (Au), or the like may be added to ensure the stability of silver.
  • the transparent electrode is a layer composed mainly of silver, but specifically, it may be formed of silver alone or an alloy containing silver (Ag).
  • 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 in 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 light-emitting layer constituting the organic EL element preferably has a structure containing a light-emitting material, and the light-emitting material is preferably a phosphorescent compound or a fluorescent compound.
  • This 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 the interface between the light emitting layer and the adjacent layer.
  • Such a light emitting layer is not particularly limited in its configuration as long as the light emitting material contained 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 have 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 is the thickness also including the said intermediate
  • the light emitting layer as described above is prepared by using a known method such as a vacuum evaporation method, a spin coating method, a casting method, an LB method (Langmuir-Blodget, Langmuir Blodgett method) and an ink jet method. Can be formed.
  • a known method such as a vacuum evaporation method, a spin coating method, a casting method, an LB method (Langmuir-Blodget, Langmuir Blodgett method) and an ink jet method. Can be formed.
  • a plurality of light emitting materials may be mixed, and a phosphorescent light emitting material and a fluorescent light emitting material (also referred to as a fluorescent dopant or a fluorescent compound) may be mixed and used in the same light emitting layer.
  • 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.
  • ⁇ Host compound> As the host compound contained in the light emitting layer, 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.
  • 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). )
  • 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.). Although defined as being a compound of 01 or more, a preferable phosphorescence quantum yield is 0.1 or more.
  • 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 compounds in the light emitting layer varies in the thickness direction of the light emitting layer. It may be an embodiment.
  • preferred phosphorescent compounds include organometallic complexes having Ir as a central metal. More preferably, a complex containing at least one coordination mode of metal-carbon bond, metal-nitrogen bond, metal-oxygen bond, and metal-sulfur bond is preferable.
  • 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, and includes a hole injection layer and an electron injection layer.
  • the charge injection layer is present between the anode and the light emitting layer or the hole transport layer in the case of a hole injection layer, and between the cathode and the light emitting layer or the electron transport layer in the case of an electron injection layer.
  • the present invention is characterized in that the charge injection layer is disposed adjacent to the transparent electrode. When used in an intermediate electrode, it is sufficient that at least one of the adjacent electron injection layer and hole injection layer satisfies the requirements of the present invention.
  • the hole injection layer is a layer disposed adjacent to the anode, which is a transparent electrode, in order to reduce drive voltage and improve light emission luminance.
  • Examples of 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, poly Arylalkane derivatives, triarylamine derivatives, carbazole derivatives, indolocarbazole derivatives, isoindole derivatives, acene derivatives such as anthracene and naphthalene, fluorene derivatives, fluorenone derivatives, polyvinylcarbazole, and aromatic amines introduced into the main chain or side chain Polymer materials or oligomers, polysilanes, conductive polymers or oligomers (eg PEDOT (polyethylenedioxythiophene): PSS) Polystyrene sulfonic acid), aniline copolymers
  • 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.
  • a hexaazatriphenylene derivative can also be used as a hole transport material.
  • the electron injection layer is a layer provided between the cathode and the light emitting layer for lowering the driving voltage and improving the light emission luminance.
  • the cathode is composed of the transparent electrode according to the present invention, It is provided adjacent to the transparent electrode.
  • the electron injection layer includes metals typified by strontium and aluminum, alkali metal compounds typified by lithium fluoride, sodium fluoride, and potassium fluoride, magnesium fluoride, and fluoride.
  • Alkali metal halide layers typified by calcium, alkaline earth metal compound layers typified by magnesium fluoride, metal oxides typified by molybdenum oxide, aluminum oxide, lithium 8-hydroxyquinolate (Liq), etc.
  • the metal complex etc. which are represented are mentioned.
  • organic materials, such as a metal complex are used especially suitably.
  • 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.
  • the hole injection layer and the electron blocking layer also have the function of 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 any 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.
  • hole transport material those described above can be used, but porphyrin compounds, aromatic tertiary amine compounds and styrylamine compounds can be used, and in particular, aromatic tertiary amine compounds can be used. preferable.
  • 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 hole transport material may be formed by a known method such as a vacuum deposition method, a spin coating method, a casting method, a printing method including an ink jet method, and an LB method (Langmuir Brodget, Langmuir Brodgett method). Thus, it can be formed by thinning.
  • the layer thickness of the hole transport layer is not particularly limited, but is usually about 5 nm to 5 ⁇ m, preferably 5 to 200 nm.
  • the hole transport layer may have a single layer structure composed of one or more of the above materials.
  • the p property can be increased by doping impurities into the material of the hole transport layer.
  • 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) constituting a layer portion adjacent to the light emitting layer is used as an electron transporting material. What is necessary is just to have the function to transmit.
  • 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 about 5 nm to 5 ⁇ m, preferably 5 to 200 nm.
  • the electron transport layer may have a single structure composed of one or more of the above materials.
  • the blocking layer includes a hole blocking layer and an electron blocking layer, and is a layer provided as necessary in addition to the constituent layers of the organic functional layer unit 3 described above.
  • a hole blocking (hole block) layer can be used.
  • 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, more preferably in the range of 5 to 30 nm.
  • the cathode is an electrode film 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 produced by forming a thin film of these conductive materials by a method such as vapor deposition or sputtering.
  • the sheet resistance as the second electrode is several hundred ⁇ / sq.
  • the film thickness is usually selected from the range of 5 nm to 5 ⁇ m, preferably 5 to 200 nm.
  • a cathode having good light transmittance may be selected and configured.
  • sealing member As a sealing means used for sealing the organic EL element, for example, a sealing film provided on the outer peripheral portion and a sealing method provided on the sealing film are provided. be able to.
  • the sealing member may be disposed so as to cover the display area of the organic EL element, and may be concave or flat. Further, transparency and electrical insulation are not particularly limited.
  • a glass plate, a polymer plate, a film, a metal plate, a film, etc. examples include soda-lime glass, barium / strontium-containing glass, lead glass, aluminosilicate glass, borosilicate glass, barium borosilicate glass, and quartz.
  • the polymer plate examples 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.
  • sealing adhesive examples include photocuring and thermosetting adhesives having reactive vinyl groups such as acrylic acid oligomers and methacrylic acid oligomers, and moisture curing type sealings such as 2-cyanoacrylates. Can be mentioned. Sealing adhesives include epoxy and other heat- and chemical-curing (two-component) adhesives, hot-melt adhesives such as polyamide, polyester, and polyolefin, and cationic curing ultraviolet curing epoxy resins. Mention may be made of adhesives.
  • the gap between the sealing member and the display area (light emitting area) of the organic EL element in addition to the sealing adhesive, in the gas phase and liquid phase, inert gases such as nitrogen and argon, fluorinated hydrocarbons, It is preferable to inject an inert liquid such as silicone oil. Further, the gap between the sealing member and the display area of the organic EL element can be evacuated, or a hygroscopic compound can be sealed in the gap.
  • Method of manufacturing organic EL display As a method for producing an organic EL display, a plurality of rows of anodes, a plurality of organic EL light emitting units laminated via intermediate electrodes, and a plurality of rows of cathodes can be laminated on a transparent substrate.
  • a transparent substrate is prepared, and a thin film made of a desired electrode material, for example, an anode material is deposited on the transparent substrate so as to have a thickness of 1 ⁇ m or less, preferably in the range of 10 to 200 nm.
  • M anodes are formed by a method such as sputtering. As shown in each drawing, the anodes are formed in a plurality of rows in the vertical direction.
  • a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and the like are sequentially laminated as an organic EL light emitting unit on the transparent substrate on which the anode is formed.
  • each layer constituting the organic EL light emitting unit includes a spin coating method, a casting method, an ink jet method, a vapor deposition method, a printing method, etc., but it is easy to obtain a homogeneous layer and a pinhole is not easily generated. From the point of view, a vacuum deposition method or a spin coating method is particularly preferable. Furthermore, different formation methods may be applied for each layer. When a vapor deposition method is employed for forming each of these layers, the vapor deposition conditions vary depending on the type of compound used, but generally a boat heating temperature of 50 to 450 ° C. and a degree of vacuum of 1 ⁇ 10 ⁇ 6 to 1 ⁇ 10 ⁇ 2 Pa. It is desirable to appropriately select each condition within the range of the deposition rate of 0.01 to 50 nm / second, the substrate temperature of ⁇ 50 to 300 ° C., and the layer thickness of 0.1 to 5 ⁇ m.
  • N cathodes are formed in the lateral direction on the organic EL light emitting unit described above in the same manner as the anode forming method and the organic EL light emitting unit described above.
  • the M anodes and the N cathodes are formed so as to overlap each other when viewed in plan (FIG. 5).
  • a sealing adhesive is formed on the outer peripheral portion to form a sealing film, and sealing is performed by providing a sealing member on the top.
  • the organic EL light-emitting unit is sealed so as to cover at least each of the organic EL light-emitting units on the transparent substrate with the terminal portions of the electrodes exposed.
  • each electrode of an organic EL element and a column driver or a row driver are electrically connected.
  • an electrical connection member that can be used at that time, although it will not be restrict
  • anisotropic conductive film examples include a layer having fine conductive particles having conductivity mixed with a thermosetting resin.
  • 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 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, palladium, and the like.
  • the metal-coated resin particles for example, the surface of the resin core is made of any one of nickel, copper, gold, and palladium. Examples include coated particles.
  • the organic electroluminescence display of the present invention is an organic electroluminescence display that can achieve small format and thinning, and can simplify the process. Can be suitably used.
  • the organic electroluminescence display of the present invention can also be applied to a lighting device.
  • the lighting device provided with the organic electroluminescence display of the present invention is also useful for display devices such as home lighting, interior lighting, and backlights of liquid crystal display devices.
  • backlights such as clocks, signboard advertisements, traffic lights, light sources such as optical storage media, light sources for electrophotographic copying machines, light sources for optical communication processing machines, light sources for optical sensors, etc.
  • backlights such as clocks, signboard advertisements, traffic lights, light sources such as optical storage media, light sources for electrophotographic copying machines, light sources for optical communication processing machines, light sources for optical sensors, etc.
  • There are a wide range of uses such as household appliances.
  • the organic electroluminescence display of the present invention is an organic electroluminescence display that can achieve small formatting and thinning, and can simplify the process, and is suitable for various smart devices such as smartphones and tablets and lighting devices. Available.

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Abstract

Le problème abordé par la présente invention consiste à fournir : un affichage électroluminescent organique ayant une pluralité d'électrodes équipées à la fois d'une fonction d'émission de lumière et d'une fonction de détection tactile, ayant des matériaux de fil positionnés efficacement pour commander son fonctionnement, qui permet d'obtenir une précision de détection tactile élevée et une taille compacte et mince et qui permet d'obtenir des réductions de coût par simplification des processus ; et son procédé de détection tactile. Afin de résoudre ce problème, l'affichage électroluminescent à matrice passive selon l'invention est un affichage électroluminescent organique à matrice passive ayant une fonction d'émission de lumière et une fonction de détection tactile, ayant une ou plusieurs cathodes et une ou plusieurs anodes, la/les cathode(s) et la/les anode(s) fonctionnant toutes deux comme des électrodes de détection tactile, la période d'émission de lumière et la période de détection tactile étant temporellement séparées et, pendant la période de détection tactile, l'impact de la capacité parasite entre l'anode et la cathode est éliminé.
PCT/JP2017/046177 2016-12-26 2017-12-22 Affichage électroluminescent organique à matrice passive et procédé de détection tactile Ceased WO2018123887A1 (fr)

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JP2014530404A (ja) * 2011-09-13 2014-11-17 熊光 蔡 ビジョンインタフェースシステム
JP2016212897A (ja) * 2014-07-16 2016-12-15 エルジー ディスプレイ カンパニー リミテッド インセルタッチ型の表示装置

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Publication number Priority date Publication date Assignee Title
JP2014530404A (ja) * 2011-09-13 2014-11-17 熊光 蔡 ビジョンインタフェースシステム
JP2016212897A (ja) * 2014-07-16 2016-12-15 エルジー ディスプレイ カンパニー リミテッド インセルタッチ型の表示装置

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