WO2018101385A1 - Dispositif électronique - Google Patents

Dispositif électronique Download PDF

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Publication number
WO2018101385A1
WO2018101385A1 PCT/JP2017/042970 JP2017042970W WO2018101385A1 WO 2018101385 A1 WO2018101385 A1 WO 2018101385A1 JP 2017042970 W JP2017042970 W JP 2017042970W WO 2018101385 A1 WO2018101385 A1 WO 2018101385A1
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WO
WIPO (PCT)
Prior art keywords
wiring
oled panel
touch detection
electrode
fpc
Prior art date
Application number
PCT/JP2017/042970
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English (en)
Japanese (ja)
Inventor
誠二 大橋
一由 小俣
Original Assignee
コニカミノルタ株式会社
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Filing date
Publication date
Application filed by コニカミノルタ株式会社 filed Critical コニカミノルタ株式会社
Publication of WO2018101385A1 publication Critical patent/WO2018101385A1/fr

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    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Definitions

  • the present invention relates to an electronic device including an organic electroluminescence element panel with a touch sensor connected to a flexible printed circuit (FPC).
  • FPC flexible printed circuit
  • an LED light emitting diode
  • EL organic electroluminescence
  • OLED Organic light emitting diode
  • the light guide plate LED is used not only for general illumination but also for various scenes and applications such as a backlight for LCD (liquid crystal display).
  • planar light source body is applied to various electronic devices.
  • various electronic devices For example, since around 2008, the production volume of smart devices (smartphones, tablets) has increased, and light guide plate LEDs are mainly used as backlights for main displays (LCD).
  • a light guide plate LED is often incorporated as a backlight for a common function key button at the bottom of the device.
  • Common function key buttons are mainly used in three types: home (displayed with a square mark, etc.), back (displayed with an arrow mark, etc.), and search (displayed with a magnifying glass mark, etc.) (for example, patent documents). 1).
  • the common function key button generally prints the pattern of the mark to be displayed on the cover glass, installs the light guide plate LED above the cover glass, causes the LED to emit light according to the required scene, By guiding light through a light guide plate (film), light is extracted to the display side through a dot-shaped diffusion member printed on the pattern portion.
  • an organic electroluminescence (EL) element panel (OLED panel) having a touch sensor function to a common function key button.
  • EL organic electroluminescence
  • OLED panel organic electroluminescence element panel
  • Patent Document 2 An expensive material such as polyimide is used for the FPC in order to ensure reliability.
  • FPC flexible printed circuit
  • the space for incorporating the OLED panel is limited, it is necessary to minimize the FPC. Accordingly, in the FPC, the wiring is laid out immediately below or in the vicinity of the OLED panel.
  • the present invention provides an electronic device capable of suppressing the occurrence of erroneous detection in an organic electroluminescence element panel having a touch sensor function.
  • An electronic device of the present invention includes a flexible printed wiring board and a plurality of organic electroluminescence element panels having a touch sensor function, and a first wiring connected to a touch detection electrode of the first organic electroluminescence element panel;
  • the touch detection electrode of the second organic electroluminescence element panel does not have a portion overlapping in the stacking direction of the flexible printed wiring board.
  • an electronic device capable of suppressing the occurrence of erroneous detection in an organic electroluminescence element panel having a touch sensor function.
  • FIG. 2 is a cross-sectional view taken along line AA of the smart device shown in FIG.
  • FIG. 2 is a schematic sectional drawing which shows the structure of the OLED panel which has a touch sensor function.
  • It is a figure which shows the drive circuit figure of the OLED panel which has a touch sensor function.
  • It is a figure which shows the timing chart of the light emission period and sensing period of an OLED panel which has a touch sensor function.
  • FIG. 10 is a plan layout view of an OLED panel mounted on an FPC (conventional).
  • FIG. 9 is a sectional view taken along line BB of the OLED panel mounted on the FPC shown in FIG. It is a figure which shows the state by which the OLED panel was touched with the finger
  • FIG. 2 is a plan layout view of an OLED panel mounted on an FPC (first embodiment). It is CC sectional view taken on the line of the OLED panel mounted in FPC shown in FIG.
  • FIG. 6 is a plan layout view of an OLED panel mounted on an FPC (second embodiment).
  • FIG. 1 shows a plan view of a smart device as an example of a general electronic device.
  • FIG. 2 is a cross-sectional view of the smart device shown in FIG.
  • the smart device 10 illustrated in FIGS. 1 and 2 is, for example, a smartphone or a tablet computer.
  • FIGS. 1 and 2 only the main components used in the description of the present embodiment are shown, and the description of other components such as the power supply unit is omitted.
  • the smart device 10 is provided with a plurality of common function keys 13 in the icon display section 12 below the main display screen 11.
  • the common function key 13 is displayed by an icon 14.
  • An OLED panel having a touch sensor function (not shown) is mounted below the common function key 13 displayed by these icons 14, and touch detection of the OLED panel having the touch sensor function is turned ON by touching the icon 14, and the smart device. 10 functions can be switched.
  • the smart device 10 includes a housing 18 that forms the bottom and side surfaces of the smart device 10, each element disposed inside the housing 18, and each element.
  • the cover 18 covers the upper part inside the housing 18 and is provided on the entire surface of the smart device 10 on the surface side.
  • a main display panel 19 including a liquid crystal panel for configuring the main display screen 11, an OLED panel 20 having a touch sensor function for configuring the icon display unit 12, and the smart device 10.
  • a printed circuit board (PCB) 15 on which various circuits are formed, and a flexible printed circuit (FPC) 16 and 40 for connecting the main display panel 19 or the OLED panel 20 and the PCB 15 are provided. It has been.
  • the main display panel 19, the OLED panel 20 and the PCB 15, and the FPCs 16 and 40 are pressure-bonded and connected by an anisotropic conductive film (ACF) or the like (not shown).
  • ACF anisotropic conductive film
  • the main display panel 19 and the OLED panel 20 are connected to the PCB 15 via the FPCs 16 and 40, and are connected to various control units and various circuits provided on the PCB 15.
  • the main display panel 19 and the OLED panel 20 are generally supplied with power from a power supply circuit provided in the PCB 15.
  • FIG. 3 is a schematic cross-sectional view showing an example of the configuration of an OLED panel having a touch sensor function in which the anode electrode is a touch detection electrode.
  • an anode electrode 24 and, for example, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, and the like are formed on the transparent base material 23.
  • a light emitting unit 25 and a cathode electrode 26 are stacked. Further, the outer peripheral portions of the transparent base material 23, the light emitting unit 25, and the cathode electrode 26 are sealed with a sealing resin 27, and a sealing member 28 is disposed on the sealing resin 27, whereby the organic EL element 30 is configured.
  • the surface of the transparent base 23 opposite to the surface on which the organic EL element 30 is formed is sealed with a sealing resin 27 in a state separated from the organic EL element 30, and the upper surface portion thereof.
  • a cover glass 21 is provided.
  • a light emitting element drive circuit unit 22 is connected between an anode electrode 24 and a cathode electrode 26, which are a pair of electrodes.
  • the light emitting element driving circuit unit 22 is provided with a light emitting element driving circuit unit capable of controlling light emission of the organic EL element 30.
  • the anode electrode 24 functions as a counter electrode that causes the organic EL element 30 to emit light, and also functions as a detection electrode that is a touch detection electrode. For this reason, the anode electrode 24 that is a touch detection electrode is provided with a capacitive touch detection circuit unit 29 that can detect a touch (finger touch).
  • the configuration in which the anode electrode 24 also serves as the touch detection electrode is shown, but the cathode electrode 26 may serve as the touch detection electrode.
  • FIG. 4 shows an example of a drive circuit diagram of the OLED panel 20 having the touch sensor function shown in FIG.
  • the organic EL element 30 shown in the center has the anode electrode 24 connected to the anode electrode wiring 35 and the cathode electrode 26 connected to the cathode electrode wiring 36.
  • the organic EL element 30 functions as a diode 32 serving as a light emitting element and a capacitor 31 serving as a capacitive element between the cathode electrode 26 and the anode electrode wiring 35.
  • the organic EL element 30 is connected to the light emitting element driving circuit unit 22 by an anode electrode wiring 35 and a cathode electrode wiring 36.
  • the light emitting element driving circuit unit 22 includes a light emitting element driving circuit unit 33.
  • the light emitting element driving circuit unit 33 incorporates a constant current driving circuit or a constant voltage driving circuit, controls the light emission timing of the organic EL element 30, and applies reverse bias (reverse applied voltage) as necessary.
  • the light emitting element driving circuit unit 22 includes an anode electrode wiring 35, a switch 1 (SW1), a light emitting element driving circuit unit 33, a switch 2 (SW2), and a cathode electrode wiring 36, as indicated by a broken line in FIG. The circuit range that is being used.
  • the light emitting element drive circuit unit 33 and SW1 and SW2 are shown as independent structures. However, if necessary, the light emitting element drive circuit unit 33 includes SW1 and / or SW2. It may be.
  • the anode electrode wiring 35 led out from the anode electrode 24 is connected to the light emitting element driving circuit unit 33 through the switch 1 (SW 1). Further, the cathode electrode wiring 36 drawn from the cathode electrode 26 is connected to the light emitting element driving circuit unit 33 via the switch 2 (SW2). Further, the light emitting element driving circuit unit 33 is connected to the ground 37.
  • the ground 37 is specifically called a signal ground.
  • the organic EL element 30 is connected to the touch detection circuit unit 29 by an anode electrode wiring 35 drawn from the anode electrode 24 that functions as a touch detection electrode.
  • the anode electrode wiring 35 drawn from the anode electrode 24 is connected to the touch detection circuit unit 34 via the switch 3 (SW3).
  • the touch detection circuit unit 34 is connected to the ground 37. A configuration in which the switch 3 (SW3) is incorporated in the touch detection circuit unit 34 may be employed.
  • the light emitting element drive circuit unit 33 includes a step-up or step-down DC-DC converter circuit, a switch element control circuit of the DC-DC converter, a current value feedback circuit, and the like.
  • the detection resistance is R 1
  • the comparison potential is V ref
  • the anode potential of the organic EL element 30 is boosted by the DC-DC converter circuit so that the current I OLED flowing through the organic EL element 30 becomes V ref / R 1.
  • the light emitting element driving circuit unit 33 can be a constant current circuit.
  • the configuration of the light emitting element driving circuit unit 33 is not particularly limited, and a conventionally known light emitting element driving circuit unit (organic EL element driving circuit) can be applied.
  • the light emitting element driving circuit emits light from an organic EL element, which is a light emitting element, between an anode electrode and a cathode electrode according to a preset light emitting pattern of the light emitting element as shown in FIG. It has a function of applying a current according to the amount of light.
  • 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.
  • the light emitting element driving circuit unit 33 the light emitting element driving circuits described in JP 2002-156944 A, JP 2005-265937 A, JP 2010-040246 A, and the like can be referred to.
  • the configuration of the touch detection circuit unit 34 is not particularly limited, and a conventional known touch detection circuit can be applied.
  • the touch detection circuit includes an amplifier, a filter, an AD converter, a rectifying / smoothing circuit, a comparator, and the like.
  • Typical examples of the touch detection circuit unit 34 include a self-capacitance detection method, a series capacitance division comparison method (OMRON method), and the like.
  • touch detection circuits described in JP 2012-073783 A, JP 2013-088932 A, JP 2014-053000 A, and the like can be referred to.
  • the switches 1 to 3 are not particularly limited as long as they have a switching function such as a field effect transistor (FET) and a thin film transistor (TFT).
  • FET field effect transistor
  • TFT thin film transistor
  • FIG. 5 shows a timing chart showing an example of the light emission period and the sensing period.
  • the OLED panel 20 having the touch sensor function shown in FIG. 4 is controlled by the light emission period of the OLED panel 20 controlled by the light emitting element driving circuit unit 22 and the touch detection circuit unit 29 by ON / OFF control of each switch.
  • the sensing period is driven separately. Thereby, the light emission in the OLED panel 20 which has a touch sensor function, and a touch sensor function can be expressed.
  • FIG. 5 is a chart showing the ON / OFF operation timing of SW1 in the light emitting element driving circuit unit 22.
  • the uppermost column in FIG. And each column below this is a chart which similarly shows the operation timing of SW2 and SW3.
  • the bottom column is a chart showing a voltage application state to the organic EL element (OLED).
  • OLED organic EL element
  • SW3 is a switch for controlling the driving of the touch detection circuit unit 29.
  • SW1 and SW2 are “ON”
  • SW3 is set to “OFF”
  • SW1 and SW2 are set to “OFF”.
  • Touch detection is performed by setting SW3 to the “ON” state.
  • the timing for setting SW3 to the “ON” state is after a predetermined standby time (t1) has elapsed from the above-described SW1 and SW2 to “OFF”.
  • This standby period (t1) is preferably in the range of about 0 ⁇ to 5 ⁇ of the charge / discharge time constant ⁇ of the organic EL element.
  • the period from when SW1 and SW2 are turned “ON” to when it is turned “OFF” is the light emission period (LT), and after SW1 and SW2 are turned “OFF”, SW3 is turned “OFF”.
  • LT light emission period
  • SW3 is turned “OFF”.
  • ST sensing period in which touch detection is performed. Note that the total period (LT + ST) of one light emission period (LT) and one sensing period (ST) is referred to as one frame period (1FT) in the timing chart.
  • a light emission period (LT) in the OLED panel 20 which has a touch sensor function a sensing period (ST), and 1 frame period (1FT)
  • the conditions suitable for the environment to apply can be selected suitably.
  • the light emission period (LT) can be 0.1 to 2.0 ms
  • the sensing period (ST) can be 0.05 to 0.3 ms
  • the one frame period (1FT) can be 0.15 to 2.3 ms.
  • One frame period (1FT) is preferably 60 Hz or more for the purpose of reducing flicker.
  • FIG. 6 shows an example of a circuit operation diagram in the light emission period (LT).
  • FIG. 7 shows an example of a circuit operation diagram in the sensing period (ST).
  • SW1 and SW2 are turned on. Then, the light emission driving condition is controlled by the light emitting element driving circuit unit 33, and the organic EL element 30 is caused to emit light according to the light emission control information route 38. At this time, SW3 connected to the touch detection circuit unit 29 is set to the “OFF” state.
  • SW1 and SW2 of the light emitting element driving circuit unit 22 are set to “OFF” to open the light emitting element driving circuit, and the switch 3 (SW3) of the touch detection circuit unit 29 is set to “ON”. "
  • SW3 of the touch detection circuit unit 29 is set to “ON”.
  • FIG. 8 shows a plan layout of the FPC and the OLED panel mounted on the FPC.
  • FIG. 9 shows a cross-sectional view of the FPC and the OLED panel mounted on the FPC.
  • FIG. 9 is a view corresponding to a cross section taken along line BB in FIG.
  • three common function keys are provided in the icon display section of the smart device (see FIG. 1), and a first OLED panel for displaying three icons corresponding to the three common function keys.
  • 20A, the second OLED panel 20B, and the third OLED panel 20C are arranged in the FPC 40.
  • regions where the first to third OLED panels 20A, 20B, and 20C are arranged are indicated by broken lines.
  • the regions where the anode electrodes 24A, 24B, 24C are disposed are indicated by solid lines.
  • the FPC 40 has a configuration in which a base film 41 and conductive layers formed on both main surfaces of the base film 41 are laminated. As shown in FIGS. 8 and 9, the FPC 40 is provided with wirings 42, 43, 44 that penetrate both main surfaces of the base film 41 and the base film 41.
  • the wirings 42, 43, and 44 are connected to the respective electrodes of the first to third OLED panels 20A, 20B, and 20C on the first main surface (front surface) side of the base film 41 in a predetermined layout. Further, the wirings 42 and 43 are led out to the second main surface (back surface) side of the base film 41 through the through electrodes.
  • the wiring 44 is provided on the first main surface (front surface) side of the base film 41.
  • the wiring 42 is connected to the cathode electrode or the anode electrode of the first organic electroluminescence element panel (OLED panel) 20A, and is drawn out to the external connection terminal of the FPC 40. Further, the wiring 42 is connected to the cathode electrode or the anode electrode of the first OLED panel 20A on the first surface side of the base film 41, and is led out to the second surface side through the through electrode. The wiring 42 passes through the overlapping area in the stacking direction of the second and third OLED panels 20B and 20C and the FPC 40, and is led out to the external connection terminal.
  • the wiring 42 has a portion that overlaps with the anode electrode 24 ⁇ / b> B of the second OLED panel 20 ⁇ / b> B in the stacking direction of the FPC 40.
  • the wiring 43 is connected to the cathode electrode or the anode electrode of the second OLED panel 20B and led out to the external connection terminal of the FPC 40. Further, the wiring 43 is connected to the cathode electrode or the anode electrode of the second OLED panel 20B on the first surface side of the base film 41, and is led out to the second surface side through the through electrode. The wiring 43 passes through a region overlapping in the stacking direction of the third OLED panel 20C and the FPC 40, and is drawn out to the external connection terminal. At this time, a part of the wiring 43 provided on the second surface side passes through a region overlapping with the anode electrode 24C of the third OLED panel 20C until reaching the external connection terminal of the FPC 40. Therefore, as shown in FIG. 9, the wiring 43 has a portion that overlaps the anode electrode 24 ⁇ / b> C of the third OLED panel 20 ⁇ / b> C in the stacking direction of the FPC 40.
  • the second OLED panel 20B When the second OLED panel 20B is touched with the finger (F) in the first to third OLED panels 20A, 20B, 20C having the above-described configuration and the FPC 40, as shown in FIG. 9, the second OLED panel 20B A parasitic capacitance (Cf) is generated between the finger (F) and the anode electrode 24B as the detection electrode.
  • the wiring 42 since the wiring 42 has a portion that overlaps with the anode electrode 24B of the second OLED panel 20B in the stacking direction, the parasitic capacitance is also generated in the portion where the wiring 42 and the anode electrode 24B overlap with the generation of the parasitic capacitance (Cf). (Cp1) is generated.
  • FIG. 10 shows a state where the second OLED panel 20B mounted on the FPC 40 is touched with a finger (F).
  • the second OLED panel 20B in FIG. 10 has the same configuration as the OLED panel 20 shown in FIG. 3 described above, and the sealing member 28 side of the second OLED panel 20B is disposed on the first main surface of the FPC 40. ing. Further, the wiring 43 is connected to the anode electrode 24B of the second OLED panel 20B, and is led out to the second main surface side of the FPC 40 through the through electrode.
  • a parasitic capacitance (Cp1) is generated at a portion where the wiring 42 and the anode electrode 24B overlap.
  • the parasitic capacitance (Cf) generated between the finger (F) and the anode electrode 24 serving as the detection electrode, and the parasitic capacitance (Cp1) generated in the portion where the wiring 42 and the anode electrode 24B overlap each other are: Since the capacitive element in which (F), the anode electrode 24, and the wiring 42 are connected in series, a combined capacitance (Ct) is generated.
  • FIG. 11 shows an equivalent circuit of the touch detection circuit unit 34B.
  • the combined capacitance (Ct) viewed from the touch detection circuit unit 34B of the second OLED panel 20B is a parasitic capacitance (Cf).
  • Cf parasitic capacitance
  • a parasitic capacitance (Cf) exceeding a threshold value is generated in the wiring 42 connected to the anode electrode 24A that is the touch detection electrode of the first OLED panel 20A, and the first OLED panel connected to the anode electrode 24A.
  • the 20A touch detection circuit unit 34A detects a touch. Thereby, although the first OLED panel 20A is not touched, the touch is detected also in the touch detection circuit unit 34A of the first OLED panel 20A, and erroneous detection occurs.
  • the anode electrode 24C that is the touch detection electrode of the third OLED panel 20C and the wiring 43 that is connected to the anode electrode 24B that is the touch detection electrode of the second OLED panel 20B include: It has a region overlapping in the stacking direction. For this reason, the same erroneous detection as described above may occur in the second OLED panel 20B when the third OLED panel 20C is touched. As described above, in the configuration in which the wiring connected to the touch detection electrode of the OLED panel passes through the region where the touch detection electrode of another OLED panel is formed and has portions overlapping each other in the stacking direction of the FPC 40, Misdetection of detection may occur.
  • Embodiment of Electronic Device (First Embodiment)>
  • an embodiment (first embodiment) of an electronic device including an OLED panel having a touch sensor function capable of suppressing the above-described erroneous detection will be described.
  • the structure of the electronic device in the following embodiment can apply the structure similar to description of the above-mentioned electronic device except the layout of the wiring provided in FPC. Therefore, in the following description, only the configuration related to the layout of the wiring provided in the FPC will be described, and detailed description of the other configuration will be omitted.
  • FIG. 12 shows a planar layout of the FPC and the OLED panel mounted on the FPC in the embodiment.
  • FIG. 13 shows a cross-sectional view of the FPC and the OLED panel mounted on the FPC.
  • FIG. 13 is a view corresponding to a cross section taken along the line CC in FIG.
  • three common function keys are provided in the icon display section of the smart device (see FIG. 1), and first to third icons for displaying three icons corresponding to the three common function keys.
  • OLED panels 20A, 20B, and 20C are arranged in the FPC 40.
  • the first to third OLED panels 20A, 20B, and 20C are arranged in the order of the third OLED panel 20C, the second OLED panel 20B, and the first OLED panel 20A from the external connection terminal side.
  • regions where the first to third OLED panels 20A, 20B, and 20C are arranged are indicated by broken lines.
  • the regions where the anode electrodes 24A, 24B, 24C are disposed are indicated by solid lines.
  • the FPC 40 includes a base film 41, a first wiring 42A and a second wiring 42B connected to the first OLED panel 20A, and a third wiring 43A and a fourth wiring connected to the second OLED panel 20B.
  • the wiring 43B includes a fifth wiring 44A and a sixth wiring 44B connected to the third OLED panel 20C.
  • the first wiring 42A is connected to the anode electrode of the first OLED panel 20A
  • the second electrode is connected to the cathode electrode of the first OLED panel 20A. Description will be made assuming a configuration in which the wiring 42B is connected.
  • the first wiring 42A and the second wiring 42B connected to the first OLED panel 20A are laid out on both main surfaces of the base film 41 and in the through holes of the base film 41.
  • the first wiring 42A and the second wiring 42B are connected to the anode electrode 24A or the cathode electrode of the first OLED panel 20A on the first main surface (front surface) side of the base film 41, respectively.
  • the first wiring 42A and the second wiring 42B are led out to the second main surface (back surface) side of the base film 41 through the through electrode in the region where the first OLED panel 20A is disposed. Yes.
  • the first wiring 42A and the second wiring 42B led out to the second main surface side of the base film 41 are within the region where the second OLED panel 20B is disposed and the touch detection of the second OLED panel 20B.
  • the anode electrode 24B which is an electrode, passes outside the region where the anode electrode 24B is disposed, and is led out to the external connection terminal.
  • the first wiring 42A and the second wiring 42B are in a region where the third OLED panel 20C is disposed and a region where the anode electrode 24C which is a touch detection electrode of the third OLED panel 20C is disposed. It passes outside and is pulled out to the terminal for external connection.
  • the first wiring 42A and the second wiring 42B are arranged outside the third wiring 43A and the fourth wiring 43B, and the fifth wiring 44A and the sixth wiring 44B in the planar arrangement of the FPC 40. Has been.
  • first wiring 42A and the second wiring 42B led to the second main surface side of the base film 41 are led out between the first OLED panel 20A and the second OLED panel 20B.
  • the electrodes are led out in the opposite directions.
  • the distance between the wirings in a direction (vertical direction in the drawing) orthogonal to the direction in which the wiring is led out is vertical in the drawing of the anode electrodes 24B and 24C. After becoming larger than the length in the direction, the wires are drawn out in parallel toward the outside of the FPC 40 in the direction in which the wiring is led out (lateral direction in the drawing).
  • the first wiring 42A and the second wiring 42B are laid out on both ends of the base film 41 of the FPC 40 with the second and third OLED panels 20B and 20C interposed therebetween. Then, between the region where the second OLED panel 20B and the third OLED panel 20C are arranged and the external connection terminal, the direction in which the wiring is led out outside the anode electrodes 24B and 24C (lateral direction in the drawing) It is arranged in parallel with.
  • the third wiring 43A and the fourth wiring 43B connected to the second OLED panel 20B are laid out on both main surfaces of the base film 41 and in the through holes of the base film 41.
  • the third wiring 43A and the fourth wiring 43B are connected to the anode electrode 24B or the cathode electrode of the second OLED panel 20B on the first main surface (front surface) side of the base film 41, respectively.
  • 3rd wiring 43A and 4th wiring 43B are derived
  • the third wiring 43A and the fourth wiring 43B led out to the second main surface side of the base film 41 are within the region where the third OLED panel 20C is disposed and of the third OLED panel 20C.
  • the anode electrode 24C which is a touch detection electrode, passes outside the region where the anode electrode 24C is disposed, and is led out to the external connection terminal.
  • the third wiring 43A and the fourth wiring 43B are arranged inside the planar arrangement of the FPC 40 relative to the first wiring 42A and the second wiring 42B, and the fifth wiring 44A and the sixth wiring 44B. Rather than outside in the planar arrangement of the FPC 40.
  • the third wiring 43A and the fourth wiring 43B led out to the second main surface side of the base film 41 are led out between the second OLED panel 20B and the third OLED panel 20C.
  • each is derived from the electrode in the same direction.
  • the third wiring 43A and the fourth wiring 43B have a distance between wirings in a direction (vertical direction in the drawing) orthogonal to the direction in which the wiring is derived (horizontal direction in the drawing) in the vertical direction in the drawing of the anode electrode 24C. After becoming larger than the length, the wires are drawn in parallel toward the outside of the FPC 40 in the direction in which the wiring is led out (lateral direction in the drawing).
  • the third wiring 43A and the fourth wiring 43B are laid out on both ends of the base film 41 of the FPC 40 with the third OLED panel 20C interposed therebetween.
  • the third OLED panel 20C is disposed outside the anode electrode 24C in parallel to the direction in which the wiring is led out (lateral direction in the drawing).
  • the third wiring 43A and the fourth wiring 43B are arranged in parallel to the lead-out direction (the lateral direction in the drawing)
  • the third wiring 43A and the first wiring 42A are adjacent to each other.
  • the fourth wiring 43B and the second wiring 42B are adjacently arranged in parallel.
  • the fifth wiring 44A and the sixth wiring 44B connected to the third OLED panel 20C are laid out only on the first main surface (front surface) side of the base film 41.
  • the fifth wiring 44A and the sixth wiring 44B are connected to the anode electrode 24C or the cathode electrode of the third OLED panel 20C on the first main surface side of the base film 41, respectively. Then, the fifth wiring 44A and the sixth wiring 44B are drawn out to the external connection terminals.
  • the third wiring 43A and the fourth wiring 43B, the fifth wiring 44A and the sixth wiring 44B are OLEDs other than the third OLED panel 20C. It does not pass through the area where the panel is placed. Furthermore, the fifth wiring 44 ⁇ / b> A and the sixth wiring 44 ⁇ / b> B are not led out to the second main surface side of the base film 41. Further, the fifth wiring 44A and the sixth wiring 44B are formed from the third wiring 43A and the fourth wiring 43B, the first wiring 42A and the second wiring 42B from the both end sides of the base film 41 of the FPC 40. Is also laid out inside.
  • the fifth wiring 44A and the sixth wiring 44B are laid out adjacent to each other in parallel to the direction in which the wiring is derived (lateral direction in the drawing).
  • the fifth wiring 44A is arranged in parallel with the third wiring 43A and the first wiring 42A
  • the sixth wiring 44B is arranged in parallel with the fourth wiring 43B and the second wiring 42B. Is arranged in. Therefore, in the FPC 40, in the planar arrangement, the first wiring 42A, the third wiring 43A, and the fifth wiring 44A are adjacently arranged in parallel in this order from one end side of the base film 41. It is laid out. Further, the second wiring 42B, the fourth wiring 43B, and the sixth wiring 44B are laid out adjacently in parallel from the other end side of the base film 41 in this order.
  • the second OLED panel 20B when the second OLED panel 20B is touched with a finger (F) as shown in FIG.
  • a parasitic capacitance (Cf) is generated between the finger (F) and the anode electrode 24B as the detection electrode.
  • the parasitic capacitance (Cf) is generated between the finger (F) and the anode electrode 24 serving as the detection electrode, so that the touch detection operation described in the outline of the electronic device described above causes the touch detection circuit unit 29B. Can be detected. Accordingly, a touch on the second OLED panel 20B is detected.
  • the first wiring 42A overlaps the anode electrode 24B of the second OLED panel 20B in the stacking direction. Does not have a part. Therefore, unlike the configuration described in the outline of the electronic device (see FIGS. 8 to 11), no parasitic capacitance (Cp1) is generated between the first wiring 42A and the anode electrode 24B.
  • the first OLED panel 20A connected to the anode electrode 24A that is the touch detection electrode of the first OLED panel 20A.
  • the parasitic capacitance (Cf) exceeding the threshold value does not occur in the wiring 42A.
  • the touch on the second OLED panel 20B the touch is not detected even in the touch detection circuit unit 34A of the first OLED panel 20A, and no erroneous detection occurs.
  • the third electrode connected to the anode electrode 24C that is the touch detection electrode of the third OLED panel 20C and the anode electrode 24B that is the touch detection electrode of the second OLED panel 20B.
  • This wiring 43A does not have a region overlapping in the stacking direction. For this reason, similarly to the case of the first OLED panel 20A, erroneous detection in the second OLED panel 20B does not occur even when the third OLED panel 20C is touched.
  • the wiring connected to the touch detection electrode of the OLED panel is formed by the touch detection electrode of another OLED panel.
  • the above-described erroneous detection of the touch detection does not occur by not passing through the formed region and having no overlapping portions in the stacking direction. Therefore, when an OLED panel having a specific touch sensor function is touched, an electronic device can be configured in which erroneous detection in an OLED panel having another touch sensor function is suppressed.
  • the first wiring 42A and the second wiring 42B connected to the first OLED panel 20A are within the region where the second OLED panel 20B is disposed, and , And passes through the region where the third OLED panel 20C is disposed. Then, the third wiring 43A and the fourth wiring 43B connected to the second OLED panel 20B pass through the region where the third OLED panel 20C is disposed. For this reason, even in the configuration in which the wiring connected to the touch detection electrode of the above-described OLED panel does not pass through the region where the touch detection electrode of the other OLED panel is formed and does not have a portion overlapping each other in the stacking direction, There is no need to newly provide a region for wiring formation. Therefore, the wiring layout having the above-described configuration is possible without increasing the area of the FPC 40.
  • Embodiment of Electronic Device (Second Embodiment)> Next, a second embodiment of an electronic apparatus including an OLED panel having a touch sensor function and having a configuration capable of suppressing erroneous detection will be described.
  • the structure of the electronic device in the following embodiment can apply the structure similar to the electronic device of the above-mentioned 1st Embodiment except the layout of the wiring provided in FPC. Therefore, in the following description, only the configuration related to the layout of the wiring provided in the FPC will be described, and detailed description of the other configuration will be omitted.
  • FIG. 14 shows a planar layout of the FPC in the embodiment and the OLED panel mounted on the FPC.
  • the cross-sectional structure of the OLED panel mounted on the FPC shown in FIG. 14 is the same as the structure shown in FIG.
  • first to third OLED panels 20A, 20B, and 20C for displaying three icons corresponding to the common function keys are arranged in the FPC 40.
  • regions where the first to third OLED panels 20A, 20B, and 20C are arranged are indicated by broken lines.
  • the regions where the anode electrodes 24A, 24B, 24C are disposed are indicated by solid lines.
  • the FPC 40 includes a base film 41, a first wiring 42A and a second wiring 42B connected to the first OLED panel 20A, and a third wiring 43A and a fourth wiring connected to the second OLED panel 20B.
  • the wiring 43B includes a fifth wiring 44A and a sixth wiring 44B connected to the third OLED panel 20C.
  • the first wiring 42A is connected to the anode electrode of the first OLED panel 20A
  • the second electrode is connected to the cathode electrode of the first OLED panel 20A. Description will be made assuming a configuration in which the wiring 42B is connected.
  • the first wiring 42A and the second wiring 42B connected to the first OLED panel 20A are the anode electrode 24A or the cathode electrode of the first OLED panel 20A on the first main surface (front surface) side of the base film 41. Are connected to each. Then, the first wiring 42A and the second wiring 42B are led out to the second main surface (back surface) side of the base film 41 through the through electrode in the region where the first OLED panel 20A is disposed. Yes.
  • first wiring 42A and the second wiring 42B led out to the second main surface side of the base film 41 are within the region where the second OLED panel 20B is disposed and the second OLED panel 20B.
  • the anode electrode 24B which is a touch detection electrode, passes outside the region where the anode electrode 24B is disposed, and is led out to the external connection terminal.
  • the first wiring 42A and the second wiring 42B are in a region where the third OLED panel 20C is disposed and a region where the anode electrode 24C which is a touch detection electrode of the third OLED panel 20C is disposed. It passes outside and is pulled out to the terminal for external connection.
  • first wiring 42A and the second wiring 42B led to the second main surface side of the base film 41 are led out between the first OLED panel 20A and the second OLED panel 20B.
  • each is derived from the electrode in the same direction.
  • the first wiring 42A and the second wiring 42B are FPCs in the direction in which the wiring is derived (lateral direction in the drawing) in the vicinity of the region where the second OLED panel 20B and the third OLED panel 20C are arranged. It is pulled out in parallel toward the outside.
  • the first wiring 42A and the second wiring 42B are laid out on one end side of the base film 41 of the FPC 40. Then, between the region where the second OLED panel 20B and the third OLED panel 20C are arranged and the external connection terminal, the direction in which the wiring is led out outside the anode electrodes 24B and 24C (lateral direction in the drawing) Are arranged adjacent to each other in parallel.
  • the third wiring 43A and the fourth wiring 43B connected to the second OLED panel 20B are the anode electrode 24B or cathode electrode of the second OLED panel 20B on the first main surface (front surface) side of the base film 41. Are connected to each. And 3rd wiring 43A and 4th wiring 43B are derived
  • the third wiring 43A and the fourth wiring 43B led out to the second main surface side of the base film 41 are within the region where the third OLED panel 20C is disposed and of the third OLED panel 20C.
  • the anode electrode 24C which is a touch detection electrode, passes outside the region where the anode electrode 24C is disposed, and is led out to the external connection terminal.
  • the third wiring 43A and the fourth wiring 43B led out to the second main surface side of the base film 41 are led out between the second OLED panel 20B and the third OLED panel 20C.
  • the electrode In the direction (vertical direction in the drawing) perpendicular to the direction (horizontal direction in the drawing), it is led out from the electrode in the direction opposite to the first wiring 42A and the second wiring 42B.
  • the third wiring 43A and the fourth wiring 43B are parallel to the outside of the FPC in the direction in which the wiring is led out (the lateral direction in the drawing) in the vicinity of the region where the third OLED panel 20C is disposed. Is pulled out adjacent to
  • the third wiring 43A and the fourth wiring 43B are laid out on the end side opposite to the first wiring 42A and the second wiring 42B of the base film 41 of the FPC 40.
  • the outside of the anode electrode 24C is arranged adjacent to and parallel to the direction in which the wiring is led out (lateral direction in the drawing). Yes.
  • the fifth wiring 44A and the sixth wiring 44B connected to the third OLED panel 20C are laid out in the same manner as in the first embodiment. For this reason, the fifth wiring 44A and the sixth wiring 44B are laid out side by side in parallel with the direction in which the wiring is led out (the horizontal direction in the drawing).
  • the fifth wiring 44A is arranged in parallel with the first wiring 42A and the second wiring 42B, and the sixth wiring 44B is arranged in parallel with the third wiring 43A and the fourth wiring 43B. Is arranged in.
  • the first wiring 42A, the second wiring 42B, the fifth wiring 44A, the sixth wiring 44B, and the third wiring are arranged from the one end (on the drawing) side of the base film 41 in the planar arrangement.
  • the wiring 43A and the fourth wiring 43B are laid out so as to be adjacent to each other in parallel. That is, the first wiring 42A, the third wiring 43A, and the fifth wiring 44A connected to the anode electrodes 24A, 24B, and 24C that are the touch detection electrodes of the first to third OLED panels 20A, 20B, and 20C are mutually connected.
  • the second wiring 42B, the fourth wiring 43B, or the sixth wiring 44B that are not adjacent to each other and are connected to the cathode electrode that is not the touch detection electrode include the first wiring 42A, the third wiring 43A, and It is interposed between the fifth wirings 44A.
  • the first wiring 42A connected to the anode electrode 24A that is the touch detection electrode of the first OLED panel 20A and the anode electrode 24B that is the touch detection electrode of the second OLED panel 20B are used.
  • the third wiring 43A to be connected and the fifth wiring 44A to be connected to the anode electrode 24C that is the touch detection electrode of the third OLED panel 20C are arranged adjacently and in parallel. For this reason, when noise (for example, parasitic capacitance between the wirings) is generated between the wirings, there is a possibility that the accuracy of touch detection in each touch detection circuit unit is lowered.
  • the fifth wirings 44A are not arranged adjacent to each other.
  • the second wiring 42B is disposed between the first wiring 42A and the fifth wiring 44A, the parasitic capacitance between the wirings between the first wiring 42A and the fifth wiring 44A. Does not occur. For this reason, in the 1st wiring 42A and the 5th wiring 44A, generation
  • the sixth wiring 44B is arranged between the third wiring 43A and the fifth wiring 44A, the parasitic between the wirings between the third wiring 43A and the fifth wiring 44A. There is no capacity. For this reason, in the 3rd wiring 43A and the 5th wiring 44A, generation
  • the touch detection electrode of the OLED panel is the anode electrode
  • the wiring connected to the anode electrode that is the touch detection electrode is the first, third, and fifth wirings. It is not limited to.
  • the touch detection electrode may be a cathode electrode.
  • SYMBOLS 10 Smart device, 11 ... Main display screen, 12 ... Icon display part, 13 ... Common function key, 14 ... Icon, 15 ... PCB, 16 ... Flexible printed wiring Plate (FPC), 17, 21 ... cover glass, 18 ... housing, 19 ... main display panel, 20 ... OLED panel, 20A ... first OLED panel, 20B ... 2nd OLED panel, 20C ... 3rd OLED panel, 22 ... Light emitting element drive circuit unit, 23 ... Transparent base material, 24, 24A, 24B, 24C ... Anode electrode, 25 ... Light emitting unit, 26 ... cathode electrode, 27 ... sealing resin, 28 ... sealing member, 29, 29B ...
  • touch detection circuit unit 30 ... organic EL element, 31 ... Con Sensor 32... Diode 33 33 light emitting element drive circuit 34, 34A, 34B touch detection circuit 35 35 anode electrode wiring 36 cathode electrode wiring 37. -Ground, 38 ... Light emission control information route, 39 ... Touch detection information route, 40 ... FPC, 41 ... Base film, 42, 43, 44 ... Wiring, 42A ... First , 42B, second wiring, 43A, third wiring, 43B, fourth wiring, 44A, fifth wiring, 44B, sixth wiring.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

L'invention concerne un dispositif électronique permettant de supprimer une détection erronée dans un panneau d'élément électroluminescent (EL) organique ayant une fonction de capteur tactile. Le dispositif électronique comprend : un circuit imprimé souple ; et une pluralité de panneaux d'élément EL organique, chacun ayant une fonction de capteur tactile. Un premier câblage, qui est connecté à une électrode de détection tactile d'un premier panneau d'élément EL organique, et une électrode de détection tactile d'un second panneau d'élément EL organique ne comportent pas de parties se chevauchant mutuellement dans la direction de stratification du circuit imprimé souple.
PCT/JP2017/042970 2016-11-30 2017-11-30 Dispositif électronique WO2018101385A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-232396 2016-11-30
JP2016232396 2016-11-30

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WO2018101385A1 true WO2018101385A1 (fr) 2018-06-07

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09251820A (ja) * 1996-03-14 1997-09-22 Matsushita Electric Works Ltd Ｅｌ照光式タッチスイッチ
JP2007534070A (ja) * 2004-04-22 2007-11-22 ソニー エリクソン モバイル コミュニケーションズ， エービー 電子機器のための制御インタフェース装置
JP2013057432A (ja) * 2011-09-07 2013-03-28 Toshiba Corp 冷蔵庫
JP2014238563A (ja) * 2013-06-06 2014-12-18 フォーカルテック システムズ リミテッドＦｏｃａｌＴｅｃｈ Ｓｙｓｔｅｍｓ， Ｌｔｄ． タッチ制御機能と一体化された有機発光ダイオードディスプレイ装置
WO2015129737A1 (fr) * 2014-02-28 2015-09-03 コニカミノルタ株式会社 Module électroluminescent organique et dispositif intelligent
WO2015151855A1 (fr) * 2014-03-31 2015-10-08 コニカミノルタ株式会社 Module électroluminescent organique et appareil d'informations
WO2015182001A1 (fr) * 2014-05-30 2015-12-03 コニカミノルタ株式会社 Module électroluminescent organique, dispositif intelligent et dispositif d'éclairage
WO2016181704A1 (fr) * 2015-05-13 2016-11-17 コニカミノルタ株式会社 Module électroluminescent organique et dispositif intelligent

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09251820A (ja) * 1996-03-14 1997-09-22 Matsushita Electric Works Ltd Ｅｌ照光式タッチスイッチ
JP2007534070A (ja) * 2004-04-22 2007-11-22 ソニー エリクソン モバイル コミュニケーションズ， エービー 電子機器のための制御インタフェース装置
JP2013057432A (ja) * 2011-09-07 2013-03-28 Toshiba Corp 冷蔵庫
JP2014238563A (ja) * 2013-06-06 2014-12-18 フォーカルテック システムズ リミテッドＦｏｃａｌＴｅｃｈ Ｓｙｓｔｅｍｓ， Ｌｔｄ． タッチ制御機能と一体化された有機発光ダイオードディスプレイ装置
WO2015129737A1 (fr) * 2014-02-28 2015-09-03 コニカミノルタ株式会社 Module électroluminescent organique et dispositif intelligent
WO2015151855A1 (fr) * 2014-03-31 2015-10-08 コニカミノルタ株式会社 Module électroluminescent organique et appareil d'informations
WO2015182001A1 (fr) * 2014-05-30 2015-12-03 コニカミノルタ株式会社 Module électroluminescent organique, dispositif intelligent et dispositif d'éclairage
WO2016181704A1 (fr) * 2015-05-13 2016-11-17 コニカミノルタ株式会社 Module électroluminescent organique et dispositif intelligent

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