WO2016086540A1 - Oled触控显示装置及其制造方法 - Google Patents

Oled触控显示装置及其制造方法 Download PDF

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Publication number
WO2016086540A1
WO2016086540A1 PCT/CN2015/072507 CN2015072507W WO2016086540A1 WO 2016086540 A1 WO2016086540 A1 WO 2016086540A1 CN 2015072507 W CN2015072507 W CN 2015072507W WO 2016086540 A1 WO2016086540 A1 WO 2016086540A1
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Prior art keywords
electrode
transparent
oled
substrate
display device
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PCT/CN2015/072507
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English (en)
French (fr)
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郝鹏
李先杰
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深圳市华星光电技术有限公司
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Priority to US14/428,974 priority Critical patent/US9791960B2/en
Publication of WO2016086540A1 publication Critical patent/WO2016086540A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—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
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3216—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using a passive matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/805—Electrodes
    • 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
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
    • 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
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/123—Connection of the pixel electrodes to the thin film transistors [TFT]
    • 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
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/124—Insulating layers formed between TFT elements and OLED elements
    • 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
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • 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
    • H10K59/40—OLEDs integrated with touch screens
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/048—Indexing scheme relating to G06F3/048
    • G06F2203/04804—Transparency, e.g. transparent or translucent windows

Definitions

  • the present invention relates to the field of touch display technologies, and in particular, to an OLED touch display device and a method of fabricating the same.
  • LCD liquid crystal display
  • OLED organic light emitting diode
  • a mainstream LCD display panel is formed by laminating a Thin Film Transistor Array Substrate (TFT Array Substrate) and a color filter substrate (Color Filter, CF), and is on a TFT substrate and a CF substrate. Fill the LCD between them.
  • the liquid crystal molecules are controlled to change direction by energization or not, and the light of the backlight module is refracted to generate a picture.
  • OLED has self-illumination, low driving voltage, high luminous efficiency, short response time, high definition and contrast ratio, near 180° viewing angle, wide temperature range, flexible display and large-area full-color display. It is the most promising display device.
  • OLED can be divided into passive matrix OLED (Passive Matrix, PM) and active matrix OLED (Active Matrix, AM), namely direct addressing and Thin Film Transistor (TFT) matrix addressing. class.
  • Passive Matrix, PM Passive Matrix, PM
  • Active Matrix, AM Active Matrix, AM
  • TFT Thin Film Transistor
  • the touch panel provides a new human-machine interaction interface, which is more direct and more user-friendly in use.
  • the touch screen and the flat display device are integrated to form a touch display device, which can enable the flat display device to have a touch function, and can perform input through a finger, a stylus, etc., and the operation is more intuitive and simple.
  • Touch screen technology can be divided into resistive, capacitive, infrared, surface wave, etc. Among them, the current application is more inductive capacitive and four-wire resistive touch screen.
  • the touch screen 10 is connected as an independent device on the LCD 20, such as a capacitive touch panel (CTP), and in order to prevent finger touch.
  • CTP capacitive touch panel
  • the LCD 20 located under the touch screen 10 is squeezed, the thickness of the liquid crystal layer is changed, thereby affecting the display effect.
  • the gap 30 between the touch screen 10 and the LCD 20 is maintained at a certain distance. This inevitably leads to an excessive thickness of the LCD touch display device and a high production cost.
  • the touch screen and the LCD are integrated into the LCD touch display device, the pressure on the screen of the finger may cause a change in the thickness of the liquid crystal layer, which directly affects the display effect. Due to its all-solid-state characteristics, OLED display devices can completely avoid this problem when integrated with a touch screen, simplifying the manufacturing process.
  • An object of the present invention is to provide an OLED touch display device capable of enabling a top emission type OLED to have a touch function, avoiding the influence of finger touch on the display effect, reducing the thickness of the touch display device, and reducing the production cost.
  • the object of the present invention is to provide a method for manufacturing an OLED touch display device.
  • the OLED touch display device manufactured by the method can enable the top emission type OLED to have a touch function, thereby preventing the finger touch from affecting the display effect, and The thickness of the touch display device is reduced, and the production cost is reduced.
  • the present invention first provides an OLED touch display device, including: an OLED display, and a transparent touch screen;
  • the OLED display includes: a substrate, a transparent package cover disposed opposite to the substrate, and a first electrode layer arranged in an array formed on a side of the substrate facing the transparent package cover, away from the first electrode layer An organic light emitting layer and a second electrode layer disposed on a surface of the substrate;
  • the first electrode layer is a reflective electrode, and the second electrode layer is a transparent electrode;
  • the transparent touch screen is disposed on a side of the transparent package cover of the OLED display facing away from the substrate.
  • the transparent touch screen comprises: a transparent electrode conductive layer formed on the transparent package cover, the electrode conductive layer comprises at least two unit electrodes, a first insulating layer located at the intersection of the unit electrodes, and an auxiliary unit connecting the electrodes An electrode and a touch driving circuit electrically connected to the auxiliary electrode.
  • the OLED display is a passive matrix OLED, and the passive matrix OLED further includes a second insulating layer and a spacer pillar disposed between the two first electrode layers, and a display driving electrically connected to the first electrode layer Circuit.
  • the OLED display is an active matrix OLED, and the active matrix OLED further includes: TFTs arranged in an array disposed on a side of the substrate facing the transparent package cover, each TFT is connected to one first electrode layer, and two A third insulating layer and a display driving circuit electrically connected to the TFT are disposed between the adjacent TFTs.
  • the OLED touch display device further includes a polarizer disposed on the transparent touch screen and a scratch-resistant transparent hard film disposed on the polarizer.
  • the invention also provides a method for manufacturing an OLED touch display device, comprising the following steps:
  • Step 1 providing a substrate, forming a top-emitting OLED display device on one side thereof;
  • Step 2 providing a transparent package cover, bonding the substrate to the transparent package cover through the encapsulant, and packaging the OLED display device with the transparent package cover;
  • Step 3 Form a transparent touch screen on a side of the transparent package cover facing away from the substrate.
  • the step 1 includes:
  • Step 11 forming a first electrode layer of the OLED display device on one side of the substrate, and electrically connecting the first electrode layer and the display driving circuit;
  • the first electrode layer is a reflective electrode
  • Step 12 forming a second insulating layer and a spacer column disposed between the two first electrode layers;
  • Step 13 Form an organic light-emitting layer and a second electrode layer on the surface of each of the first electrode layers away from the substrate.
  • the second electrode layer is a transparent electrode.
  • the step 1 includes:
  • Step 11 ′ forming a TFT arranged in an array on one side of the substrate, forming a third insulating layer between two adjacent TFTs, and electrically connecting the TFT to the display driving circuit;
  • Step 12' forming a first electrode layer connected to each TFT on a side of the substrate having TFTs arranged in an array;
  • the first electrode layer is a reflective electrode
  • Step 13' sequentially forming an organic light-emitting layer and a second electrode layer on a surface of each of the first electrode layers away from the substrate;
  • the second electrode layer is a transparent electrode.
  • the step 3 includes:
  • Step 31 forming a transparent electrode conductive layer including at least two unit electrodes on a side of the transparent package cover facing away from the substrate;
  • Step 32 forming a first insulating layer at the intersection of the unit electrodes
  • Step 33 forming an auxiliary electrode connected to the unit electrode, and electrically connecting the auxiliary electrode and the touch driving circuit.
  • the step 3 further includes: step 34, providing a polarizer on the transparent touch screen, and providing a scratch-resistant transparent hard film on the polarizer.
  • the present invention also provides an OLED touch display device, including: an OLED display, and a transparent touch screen;
  • the OLED display includes: a substrate, a transparent package cover disposed opposite to the substrate, and a first electrode layer arranged in an array formed on a side of the substrate facing the transparent package cover, at each An electrode layer is away from the organic light-emitting layer and the second electrode layer disposed on a surface of the substrate;
  • the first electrode layer is a reflective electrode, and the second electrode layer is a transparent electrode;
  • the transparent touch screen is disposed on a side of the transparent package cover of the OLED display facing away from the substrate;
  • the transparent touch screen includes: a transparent electrode conductive layer formed on the transparent package cover, the electrode conductive layer includes at least two unit electrodes, a first insulating layer located at the intersection of the unit electrodes, and the unit electrode is connected An auxiliary electrode, and a touch driving circuit electrically connected to the auxiliary electrode;
  • the OLED display is a passive matrix OLED, and the passive matrix OLED further includes a second insulating layer and a spacer disposed between the two first electrode layers, and electrically connected to the first electrode layer. Display drive circuit.
  • the present invention provides an OLED touch display device and a method of fabricating the same, in which a first electrode layer adjacent to a substrate is disposed as a reflective electrode, and a second electrode layer relatively far from the substrate is disposed as a transparent electrode.
  • the transparent touch screen is disposed on a side of the transparent package cover facing away from the substrate, so that the top emission type OLED has a touch function, and the all-solid state of the OLED display device avoids the influence of the finger touch on the display effect; and the LCD touch display device In comparison, the thickness of the touch display device can be reduced, and the production cost can be reduced.
  • FIG. 1 is a schematic structural view of a conventional LCD touch display device
  • FIG. 2 is a schematic structural view of a first embodiment of an OLED touch display device according to the present invention.
  • FIG. 3 is a schematic structural view of a second embodiment of an OLED touch display device according to the present invention.
  • FIG. 4 is a schematic plan view showing a transparent touch screen of an OLED touch display device according to the present invention.
  • FIG. 5 is a flowchart of a method of manufacturing an OLED touch display device according to the present invention.
  • FIG. 2 and FIG. 4 illustrate a first embodiment of an OLED touch display device according to the present invention.
  • the OLED touch display device includes an OLED display 1 and a transparent touch screen 2 .
  • the OLED display 1 includes a substrate 11 , a transparent package cover 12 disposed opposite to the substrate 11 , and a first electrode layer 13 arranged in an array formed on a side of the substrate 11 facing the transparent package cover 12 .
  • the first electrode layer 13 is away from the organic light-emitting layer 14 and the second electrode layer 15 provided on the surface of the substrate 11.
  • the first electrode layer 13 is a reflective electrode
  • the second electrode layer 15 is a transparent electrode.
  • the light emitted from the organic light-emitting layer 14 may be directly emitted from the second electrode layer 15 or may be reflected from the second electrode layer 15 after being reflected by the first electrode layer 13, that is, the OLED display 1 is a top emission type OLED display.
  • the transparent touch screen 2 is disposed on a side of the transparent package cover 12 of the OLED display 1 facing away from the substrate 11 , and the touch screen and the package cover are both transparent so that the light emitted from the second electrode layer 15 can pass through the package cover. Board with touch screen.
  • the OLED display 1 is a passive matrix OLED, and the passive matrix OLED further includes a second insulating layer 161 and a spacer column disposed between the two first electrode layers 13 . 162.
  • the display driving circuit 18 is electrically connected to the first electrode layer 13.
  • the display driving circuit 18 controls the voltage between the first and second electrode layers 13, 15 of each pixel in the OLED display 1 by receiving a driving signal of the external control circuit to realize display.
  • the OLED touch display device further includes a polarizer 21 disposed on the transparent touch screen 2 and a scratch-resistant transparent hard film 22 disposed on the polarizer 21; the polarizer 21 is used to improve the display effect.
  • the transparent hard film 22 is scraped for protecting the transparent touch screen 2.
  • the transparent touch screen 2 includes: a transparent electrode conductive layer formed on the transparent package cover 2, the electrode conductive layer includes at least two unit electrodes 24 at the intersection of the unit electrodes 24.
  • the first insulating layer 26 is connected to the auxiliary electrode 25 of the unit electrode 24 and the touch driving circuit 23 electrically connected to the auxiliary electrode 25.
  • the processor obtains the capacitance change amount of each unit electrode 24 through the auxiliary electrode 25, and then can be analyzed and determined.
  • the position of the contact is controlled by the external control circuit electrically connected to the touch drive circuit 23.
  • FIG. 3 and FIG. 4 is a second embodiment of the OLED touch display device of the present invention.
  • the OLED display 1 is an active matrix OLED, and further includes: TFTs 191 arranged in an array on the side of the substrate 11 facing the transparent package cover 12, each of The TFT 191 is connected to one first electrode layer 13, and a third insulating layer 192 is disposed between two adjacent TFTs 191, and a display driving circuit 18 connected to the TFT 191 is provided.
  • Display drive The driving circuit 18 performs switching control of each TFT 191 by receiving a driving signal of an external control circuit, and the TFT 191 controls the voltage of the corresponding pixel unit to realize display.
  • the transparent touch screen 2 is disposed on a side of the transparent package cover 12 facing away from the substrate 11, which enables the top emission type OLED to have a touch function, and utilizes the all-solid state characteristic of the OLED display device to avoid
  • the touch of the finger affects the display effect; compared with the LCD touch display device, the thickness of the touch display device can be reduced, and the production cost can be reduced.
  • the present invention further provides a method for manufacturing an OLED touch display device, including the following steps:
  • Step 1 A substrate 11 is provided, and a top emission OLED display device is formed on one side thereof.
  • the step 1 includes: step 11, forming a first electrode layer 13 of the OLED display device on one side of the substrate 11, and the first electrode layer 13 and the display
  • the driving circuit 18 is electrically connected;
  • the first electrode layer 13 is a reflective electrode
  • Step 12 forming a second insulating layer 161 and a spacer pillar 162 stacked between the two first electrode layers 13;
  • Step 13 forming an organic light-emitting layer 14 and a second electrode layer 15 on the surface of each of the first electrode layers 13 away from the substrate 11;
  • the second electrode layer 15 is a transparent electrode.
  • the step 1 includes: step 11', forming a TFT 191 arranged in an array on one side of the substrate 11, and forming a third insulating layer 192 between two adjacent TFTs 191.
  • the TFT 191 is electrically connected to the display driving circuit 18;
  • Step 12' forming a first electrode layer 13 connected to each TFT 191 on one side of the substrate having TFTs 191 arranged in an array;
  • the first electrode layer 13 is a reflective electrode
  • Step 13' sequentially forming an organic light-emitting layer 14 and a second electrode layer 15 on a surface of each of the first electrode layers 13 away from the substrate 11;
  • the second electrode layer 15 is a transparent electrode.
  • Step 2 Providing a transparent package cover 12, bonding the substrate 11 and the transparent package cover 12 through the encapsulant 17, and packaging the OLED display device with the transparent package cover 12 to form the OLED display 1.
  • Step 3 Form a transparent touch screen 2 on a side of the transparent package cover 12 facing away from the substrate 11.
  • the step 3 includes:
  • Step 31 forming a transparent electrode conductive layer including at least two unit electrodes 24 on a side of the transparent package cover 12 facing away from the substrate 11;
  • Step 32 forming a first insulating layer 26 at the intersection of the unit electrodes 24;
  • Step 33 forming an auxiliary electrode 25 connected to the unit electrode 24, and electrically connecting the auxiliary electrode 25 and the touch driving circuit 23.
  • the step 3 further includes: step 34, providing a polarizer 21 on the transparent touch screen 2, and providing a scratch-resistant transparent hard film 22 on the polarizer 21.
  • the OLED touch display device manufactured by the above method is a top emission type OLED.
  • the top emission type OLED can have a touch function.
  • the all-solid state of the OLED display device avoids the influence of the finger touch on the display effect; compared with the LCD touch display device, the thickness of the touch display device can be reduced, and the production cost can be reduced.
  • the OLED touch display device and the method of fabricating the same is disposed as a reflective electrode, the second electrode layer relatively far from the substrate is disposed as a transparent electrode, and the transparent touch screen is disposed on the transparent touch panel.
  • the side of the transparent encapsulating cover facing away from the substrate enables the top emission type OLED to have a touch function, and the all-solid state of the OLED display device avoids the influence of the finger touch on the display effect; compared with the LCD touch display device, The thickness of the touch display device is reduced, and the production cost is reduced.

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

Abstract

一种OLED触控显示装置及其制造方法，包括：OLED显示器(1)、及透明触摸屏(2)；OLED显示器(1)包括：基板(11)、透明封装盖板(12)、第一电极层(13)、有机发光层(14)和第二电极层(15)；该第一电极层(13)为反射电极，第二电极层(15)为透明电极；透明触摸屏(2)设置于OLED显示器(1)的透明封装盖板(12)背向基板(11)的一侧。该OLED触控显示装置能够使顶发射型OLED具有触控功能，避免手指触摸对显示效果造成影响，并减小触控显示装置的厚度，降低生产成本。

Description

OLED触控显示装置及其制造方法 技术领域
本发明涉及触控显示技术领域，尤其涉及一种OLED触控显示装置及其制造方法。
背景技术
在显示技术领域，液晶显示装置(Liquid Crystal Display，LCD)与有机发光二极管显示装置(Organic Light Emitting Diode，OLED)等平板显示装置已经逐步取代CRT显示器。
目前，主流的LCD显示面板是由一片薄膜晶体管阵列基板(Thin Film Transistor Array Substrate，TFT Array Substrate)与一片彩色滤光片基板(Color Filter，CF)贴合而成，且在TFT基板与CF基板之间灌入液晶。通过通电与否来控制液晶分子改变方向，将背光模组的光线折射出来产生画面。
OLED具有自发光、驱动电压低、发光效率高、响应时间短、清晰度与对比度高、近180°视角、使用温度范围宽，可实现柔性显示与大面积全色显示等诸多优点，被业界公认为是最有发展潜力的显示装置。
OLED按照驱动方式可以分为无源矩阵OLED(Passive Matrix，PM)和有源矩阵OLED(Active Matrix，AM)两大类，即直接寻址和薄膜晶体管(Thin Film Transistor，TFT)矩阵寻址两类。
随着便携式电子显示设备的发展，触摸屏(Touch panel)提供了一种新的人机互动界面，其在使用上更直接、更人性化。将触摸屏与平面显示装置整合在一起，形成触控显示装置，能够使平面显示装置具有触控功能，可通过手指、触控笔等执行输入，操作更加直观、简便。触摸屏技术可以分为电阻式、电容式、红外、表面波等，其中，目前应用较多的是感应电容式和四线电阻式触摸屏。
如图1所示，现有的集成了触摸屏功能的LCD触控显示装置中，触摸屏10是作为独立器件连接在LCD20上的，例如电容式触摸屏(Capacitive Touch Panel，CTP)，而且为了防止手指触摸时对位于触摸屏10下方的LCD20造成挤压，改变液晶层的盒厚，进而影响显示效果，在制造该LCD触控显示装置时，会使触摸屏10和LCD20之间保持一定距离的间隙30。这样必然会导致该LCD触控显示装置的厚度过大，生产成本较高。
显然，当触摸屏与LCD集成为LCD触控显示装置时，由于手指对屏幕的压迫会引起液晶层盒厚的改变，直接影响显示效果。而OLED显示器件因其全固态的特性，与触摸屏相集成时可以完全规避这一问题，简化制造工艺。
发明内容
本发明的目的在于提供一种OLED触控显示装置，能够使顶发射型OLED具有触控功能，避免手指触摸对显示效果造成影响，并减小触控显示装置的厚度，降低生产成本。
本发明的目的还在于提供一种OLED触控显示装置的制造方法，通过该方法制作的OLED触控显示装置，能够使顶发射型OLED具有触控功能，避免手指触摸对显示效果造成影响，并减小触控显示装置的厚度，降低生产成本。
为实现上述目的，本发明首先提供一种OLED触控显示装置，包括：OLED显示器、及透明触摸屏；
所述OLED显示器包括：基板、与基板相对设置的透明封装盖板、在基板朝向透明封装盖板的一侧形成的呈阵列排布的第一电极层、在每个第一电极层远离所述基板的表面上设置的有机发光层和第二电极层；
所述第一电极层为反射电极，所述第二电极层为透明电极；
所述透明触摸屏设置于所述OLED显示器的透明封装盖板背向基板的一侧。
所述透明触摸屏包括：在所述透明封装盖板上形成的透明的电极导电层，所述电极导电层包括至少两个单位电极，位于单位电极交叉处的第一绝缘层，连接单位电极的辅助电极，及与所述辅助电极电性连接的触控驱动电路。
所述OLED显示器为无源矩阵OLED，该无源矩阵OLED还包括位于两第一电极层之间层叠设置的第二绝缘层和隔离柱、及与所述第一电极层电性连接的显示驱动电路。
所述OLED显示器为有源矩阵OLED，该有源矩阵OLED还包括：设于基板朝向透明封装盖板一侧的呈阵列排布的TFT，每个TFT与一个第一电极层相连接、两个相邻的TFT之间设有第三绝缘层、以及与TFT电性连接的显示驱动电路。
所述OLED触控显示装置，还包括设置于所述透明触摸屏上的偏光片、以及设于所述偏光片上的防刮透明硬膜。
本发明还提供一种OLED触控显示装置的制造方法，包括如下步骤：
步骤1、提供一基板，在其一侧形成顶发射OLED显示器件；
步骤2、提供一透明封装盖板，通过封装胶将基板与透明封装盖板进行粘结，用所述透明封装盖板对OLED显示器件进行封装；
步骤3、在所述透明封装盖板背向基板的一侧形成透明触摸屏。
所述步骤1包括：
步骤11、在基板的一侧形成OLED显示器件的第一电极层，将所述第一电极层与显示驱动电路进行电性连接；
所述第一电极层为反射电极；
步骤12、在两个第一电极层之间形成层叠设置的第二绝缘层和隔离柱；
步骤13、在每个第一电极层的远离所述基板的表面上依次形成有机发光层和第二电极层；
所述第二电极层为透明电极。
所述步骤1包括：
步骤11’、在基板的一侧形成呈阵列排布的TFT，在两个相邻的TFT之间形成第三绝缘层，将所述TFT与显示驱动电路进行电性连接；
步骤12’、在基板上具有呈阵列排布的TFT的一侧形成与每一TFT相连的第一电极层；
所述第一电极层为反射电极；
步骤13’、在每个第一电极层远离所述基板的表面上依次形成有机发光层和第二电极层；
所述第二电极层为透明电极。
所述步骤3包括：
步骤31、在透明封装盖板背向基板的一侧形成至少包括两个单位电极的透明的电极导电层；
步骤32、在所述单位电极交叉处形成第一绝缘层；
步骤33、形成连接所述单位电极的辅助电极，将所述辅助电极与触控驱动电路进行电性连接。
所述步骤3还包括：步骤34、在所述透明触摸屏上设置偏光片、以及在所述偏光片上设置防刮透明硬膜。
本发明还提供一种OLED触控显示装置，包括：OLED显示器、及透明触摸屏；
所述OLED显示器包括：基板、与基板相对设置的透明封装盖板、在基板朝向透明封装盖板的一侧形成的呈阵列排布的第一电极层、在每个第 一电极层远离所述基板的表面上设置的有机发光层和第二电极层；
所述第一电极层为反射电极，所述第二电极层为透明电极；
所述透明触摸屏设置于所述OLED显示器的透明封装盖板背向基板的一侧；
其中，所述透明触摸屏包括：在所述透明封装盖板上形成的透明的电极导电层，所述电极导电层包括至少两个单位电极，位于单位电极交叉处的第一绝缘层，连接单位电极的辅助电极，及与所述辅助电极电性连接的触控驱动电路；
其中，所述OLED显示器为无源矩阵OLED，该无源矩阵OLED还包括位于两第一电极层之间层叠设置的第二绝缘层和隔离柱、及与所述第一电极层电性连接的显示驱动电路。
本发明的有益效果：本发明提供的一种OLED触控显示装置及其制造方法，将靠近基板的第一电极层设置为反射电极、将相对远离基板的第二电极层设置为透明电极，将透明触摸屏设置于透明封装盖板背向基板的一侧，能够使顶发射型OLED具有触控功能，利用OLED显示器件全固态的特性避免了手指触摸对显示效果造成影响；与LCD触控显示装置相比，能够减小触控显示装置的厚度，降低生产成本。
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图说明
下面结合附图，通过对本发明的具体实施方式详细描述，将使本发明的技术方案及其它有益效果显而易见。
附图中，
图1为现有的LCD触控显示装置的结构示意图；
图2为本发明OLED触控显示装置的第一实施例的结构示意图；
图3为本发明OLED触控显示装置的第二实施例的结构示意图；
图4为本发明OLED触控显示装置中透明触摸屏的平面结构示意图；
图5为本发明OLED触控显示装置的制造方法的流程图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图2、图4，为本发明OLED触控显示装置的第一实施例。该OLED触控显示装置包括：OLED显示器1、及透明触摸屏2。
所述OLED显示器1包括：基板11、与基板11相对设置的透明封装盖板12、在基板11朝向透明封装盖板12的一侧形成的呈阵列排布的第一电极层13，在每个第一电极层13远离所述基板11的表面上设置的有机发光层14和第二电极层15。
所述第一电极层13为反射电极，所述第二电极层15为透明电极。有机发光层14发出的光线可以从第二电极层15直接射出，也可以经过第一电极层13反射后从第二电极层15射出，即所述OLED显示器1为顶发射型OLED显示器。
所述透明触摸屏2设置于OLED显示器1的透明封装盖板12背向基板11的一侧，设置触摸屏与封装盖板均为透明，以使从第二电极层15射出的光线能够透过封装盖板与触摸屏。如图2所示的第一实施例中，所述OLED显示器1为无源矩阵OLED，该无源矩阵OLED还包括位于两第一电极层13之间层叠设置的第二绝缘层161和隔离柱162、及与所述第一电极层13电性连接的显示驱动电路18。所述显示驱动电路18通过接收外部控制电路的驱动信号，对OLED显示器1中各像素的第一与第二电极层13、15间的电压进行控制，以实现显示。
该OLED触控显示装置还包括设置于所述透明触摸屏2上的偏光片21、以及设于所述偏光片21上的防刮透明硬膜22；所述偏光片21用于改善显示效果，防刮透明硬膜22用于保护透明触摸屏2。
如图4所示，所述透明触摸屏2包括：在所述透明封装盖板2上形成的透明的电极导电层，所述电极导电层包括至少两个单位电极24，位于单位电极24交叉处的第一绝缘层26，连接单位电极24的辅助电极25，及与所述辅助电极25电性连接的触控驱动电路23。
当手指靠近电极导电层时，由于人体电场，用户手指和电极导电层会形成一个耦合电容，改变电极的寄生电容，处理器通过辅助电极25获得各个单位电极24的电容改变量，进而可以分析确定触点的位置，并通过与触控驱动电路23电性连接的外部控制电路进行后续的显示控制。
请同时参阅图3、图4，为本发明OLED触控显示装置的第二实施例。该第二实施例与第一实施例的区别在于，所述OLED显示器1为有源矩阵OLED，还包括：设于基板11朝向透明封装盖板12一侧的呈阵列排布的TFT191，每个TFT191与一个第一电极层13相连接、两个相邻的TFT191之间设有第三绝缘层192、以及与TFT191相连的显示驱动电路18。显示驱 动电路18通过接收外部控制电路的驱动信号，对各TFT191的进行开关控制，TFT191对相应像素单元的电压进行控制，以实现显示。
本发明的OLED触控显示装置，将所述透明触摸屏2设置于透明封装盖板12背向基板11的一侧，能够使顶发射型OLED具有触控功能，利用OLED显示器件全固态的特性避免了手指触摸对显示效果造成影响；与LCD触控显示装置相比，能够减小触控显示装置的厚度，降低生产成本。
请参阅图5，结合图2与图4、或图3与图4，本发明还提供一种OLED触控显示装置的制造方法，包括如下步骤：
步骤1、提供一基板11，在其一侧形成顶发射OLED显示器件。
具体的，针对如图2所示的无源矩阵OLED，该步骤1包括：步骤11、在基板11的一侧形成OLED显示器件的第一电极层13，将所述第一电极层13与显示驱动电路18进行电性连接；
所述第一电极层13为反射电极；
步骤12、在两个第一电极层13之间形成层叠设置的第二绝缘层161和隔离柱162；
步骤13、在每个第一电极层13的远离所述基板11的表面上依次形成有机发光层14和第二电极层15；
所述第二电极层15为透明电极。
针对如图3所示的有源矩阵OLED，该步骤1包括：步骤11’、在基板11的一侧形成呈阵列排布的TFT191，在两个相邻的TFT191之间形成第三绝缘层192，将所述TFT191与显示驱动电路18进行电性连接；
步骤12’、在基板上具有呈阵列排布的TFT191的一侧形成与每一TFT191相连的第一电极层13；
所述第一电极层13为反射电极；
步骤13’、在每个第一电极层13远离所述基板11的表面上依次形成有机发光层14和第二电极层15；
所述第二电极层15为透明电极。
步骤2、提供一透明封装盖板12，通过封装胶17将基板11与透明封装盖板12进行粘结，用所述透明封装盖板12对OLED显示器件进行封装，形成OLED显示器1。
步骤3、在所述透明封装盖板12背向基板11的一侧形成透明触摸屏2。
具体的，所述步骤3包括：
步骤31、在透明封装盖板12背向基板11的一侧形成至少包括两个单位电极24的透明的电极导电层；
步骤32、在所述单位电极24交叉处形成第一绝缘层26；
步骤33、形成连接所述单位电极24的辅助电极25，将所述辅助电极25与触控驱动电路23进行电性连接。
所述步骤3还包括：步骤34、在所述透明触摸屏2上设置偏光片21、以及在所述偏光片21上设置防刮透明硬膜22。
通过上述方法制造的OLED触控显示装置为顶发射型OLED，通过将所述透明触摸屏2设置于透明封装盖板12背向基板11的一侧，能够使顶发射型OLED具有触控功能，利用OLED显示器件全固态的特性避免了手指触摸对显示效果造成影响；与LCD触控显示装置相比，能够减小触控显示装置的厚度，降低生产成本。
综上所述，本发明的OLED触控显示装置及其制造方法，将靠近基板的第一电极层设置为反射电极、将相对远离基板的第二电极层设置为透明电极，将透明触摸屏设置于透明封装盖板背向基板的一侧，能够使顶发射型OLED具有触控功能，利用OLED显示器件全固态的特性避免了手指触摸对显示效果造成影响；与LCD触控显示装置相比，能够减小触控显示装置的厚度，降低生产成本。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (12)

  1. 一种OLED触控显示装置，包括：OLED显示器、及透明触摸屏；
    所述OLED显示器包括：基板、与基板相对设置的透明封装盖板、在基板朝向透明封装盖板的一侧形成的呈阵列排布的第一电极层、在每个第一电极层远离所述基板的表面上设置的有机发光层和第二电极层；
    所述第一电极层为反射电极，所述第二电极层为透明电极；
    所述透明触摸屏设置于所述OLED显示器的透明封装盖板背向基板的一侧。
  2. 如权利要求1所述的OLED触控显示装置，其中，所述透明触摸屏包括：在所述透明封装盖板上形成的透明的电极导电层，所述电极导电层包括至少两个单位电极，位于单位电极交叉处的第一绝缘层，连接单位电极的辅助电极，及与所述辅助电极电性连接的触控驱动电路。
  3. 如权利要求1所述的OLED触控显示装置，其中，所述OLED显示器为无源矩阵OLED，该无源矩阵OLED还包括位于两第一电极层之间层叠设置的第二绝缘层和隔离柱、及与所述第一电极层电性连接的显示驱动电路。
  4. 如权利要求1所述的OLED触控显示装置，其中，所述OLED显示器为有源矩阵OLED，该有源矩阵OLED还包括：设于基板朝向透明封装盖板一侧的呈阵列排布的TFT，每个TFT与一个第一电极层相连接、两个相邻的TFT之间设有第三绝缘层、以及与TFT电性连接的显示驱动电路。
  5. 如权利要求1所述的OLED触控显示装置，其中，还包括设置于所述透明触摸屏上的偏光片、以及设于所述偏光片上的防刮透明硬膜。
  6. 一种OLED触控显示装置的制造方法，包括如下步骤：
    步骤1、提供一基板，在其一侧形成顶发射OLED显示器件；
    步骤2、提供一透明封装盖板，通过封装胶将基板与透明封装盖板进行粘结，用所述透明封装盖板对OLED显示器件进行封装，形成OLED显示器；
    步骤3、在所述透明封装盖板(12)背向基板(11)的一侧形成透明触摸屏。
  7. 如权利要求6所述的OLED触控显示装置的制造方法，其中，所述步骤1包括：
    步骤11、在基板的一侧形成OLED显示器件的第一电极层，将所述第 一电极层与显示驱动电路进行电性连接；
    所述第一电极层为反射电极；
    步骤12、在两个第一电极层之间形成层叠设置的第二绝缘层和隔离柱；
    步骤13、在每个第一电极层的远离所述基板的表面上依次形成有机发光层和第二电极层；
    所述第二电极层为透明电极。
  8. 如权利要求6所述的OLED触控显示装置的制造方法，其中，所述步骤1包括：
    步骤11’、在基板的一侧形成呈阵列排布的TFT，在两个相邻的TFT之间形成第三绝缘层，将所述TFT与显示驱动电路进行电性连接；
    步骤12’、在基板上具有呈阵列排布的TFT的一侧形成与每一TFT相连的第一电极层；
    所述第一电极层为反射电极；
    步骤13’、在每个第一电极层远离所述基板的表面上依次形成有机发光层和第二电极层；
    所述第二电极层为透明电极。
  9. 如权利要求6所述的OLED触控显示装置的制造方法，其中，所述步骤3包括：
    步骤31、在透明封装盖板背向基板的一侧形成至少包括两个单位电极的透明的电极导电层；
    步骤32、在所述单位电极交叉处形成第一绝缘层；
    步骤33、形成连接所述单位电极的辅助电极，将所述辅助电极与触控驱动电路进行电性连接。
  10. 如权利要求9所述的OLED触控显示装置的制造方法，其中，所述步骤3还包括：步骤34、在所述透明触摸屏上设置偏光片、以及在所述偏光片上设置防刮透明硬膜。
  11. 一种OLED触控显示装置，包括：OLED显示器、及透明触摸屏；
    所述OLED显示器包括：基板、与基板相对设置的透明封装盖板、在基板朝向透明封装盖板的一侧形成的呈阵列排布的第一电极层、在每个第一电极层远离所述基板的表面上设置的有机发光层和第二电极层；
    所述第一电极层为反射电极，所述第二电极层为透明电极；
    所述透明触摸屏设置于所述OLED显示器的透明封装盖板背向基板的一侧；
    其中，所述透明触摸屏包括：在所述透明封装盖板上形成的透明的电 极导电层，所述电极导电层包括至少两个单位电极，位于单位电极交叉处的第一绝缘层，连接单位电极的辅助电极，及与所述辅助电极电性连接的触控驱动电路；
    其中，所述OLED显示器为无源矩阵OLED，该无源矩阵OLED还包括位于两第一电极层之间层叠设置的第二绝缘层和隔离柱、及与所述第一电极层电性连接的显示驱动电路。
  12. 如权利要求11所述的OLED触控显示装置，其中，还包括设置于所述透明触摸屏上的偏光片、以及设于所述偏光片上的防刮透明硬膜。
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