WO2020047981A1 - 具有红外识别的发光二极管显示装置 - Google Patents

具有红外识别的发光二极管显示装置 Download PDF

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Publication number
WO2020047981A1
WO2020047981A1 PCT/CN2018/113342 CN2018113342W WO2020047981A1 WO 2020047981 A1 WO2020047981 A1 WO 2020047981A1 CN 2018113342 W CN2018113342 W CN 2018113342W WO 2020047981 A1 WO2020047981 A1 WO 2020047981A1
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Prior art keywords
thin film
film transistor
electrically connected
emitting diode
light emitting
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PCT/CN2018/113342
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English (en)
French (fr)
Inventor
程江坤
Original Assignee
武汉华星光电半导体显示技术有限公司
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Application filed by 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US16/619,097 priority Critical patent/US10943085B2/en
Publication of WO2020047981A1 publication Critical patent/WO2020047981A1/zh

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    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3674—Details of drivers for scan electrodes
    • G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • 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]
    • G09G3/3266—Details of drivers for scan 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]
    • G09G3/3275—Details of drivers for data 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3685—Details of drivers for data electrodes
    • G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0421—Structural details of the set of electrodes
    • G09G2300/043—Compensation electrodes or other additional electrodes in matrix displays related to distortions or compensation signals, e.g. for modifying TFT threshold voltage in column driver
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0465—Improved aperture ratio, e.g. by size reduction of the pixel circuit, e.g. for improving the pixel density or the maximum displayable luminance or brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0202—Addressing of scan or signal lines
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/06—Details of flat display driving waveforms
    • G09G2310/067—Special waveforms for scanning, where no circuit details of the gate driver are given
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2354/00—Aspects of interface with display user

Definitions

  • the present disclosure relates to the technical field of display devices, and in particular, to a light emitting diode display device with infrared recognition.
  • the purpose of the present disclosure is to provide a light emitting diode display device with infrared recognition, which can solve the problems in the prior art.
  • a light emitting diode display device with infrared recognition includes a plurality of pixel units, each of the plurality of pixel units includes: a first scan line; a second scan line; a first A data line; a second data line; an induction line; a first pixel electrically connected to the first scan line, the second scan line, and the first data line and used to generate infrared light; a sensor A unit electrically connected to the second scanning line and the sensing line and used for sensing infrared light; a second pixel electrically connected to the first scanning line and the second data line; at least one gate A driving unit electrically connected to the first scanning line and the second scanning line and configured to sequentially select the first scanning line and the second scanning line; and at least one reading unit, the reading The unit is electrically connected to the sensing line and used to read infrared light sensed by the sensing unit.
  • the light emitting diode display device with infrared recognition further includes at least one source driving unit, the source driving unit is electrically connected to the first data line and the second data line, The first data line provides a data signal to the first pixel and provides the data signal to the second pixel through the second data line.
  • the first pixel includes a first thin film transistor, a second thin film transistor, a first light emitting diode, a third thin film transistor, a fourth thin film transistor, and an infrared light emitting diode;
  • a gate of a thin film transistor is electrically connected to the first scan line, a source of the first thin film transistor is electrically connected to the first data line, and a drain of the first thin film transistor is electrically connected to A gate of the second thin film transistor;
  • a source of the second thin film transistor is electrically connected to a direct current voltage, and a drain of the second thin film transistor is electrically connected to the first light emitting diode;
  • the gate of the three thin film transistors is electrically connected to the second scan line, the source of the third thin film transistor is electrically connected to the first data line, and the drain of the third thin film transistor is electrically connected to A gate of the fourth thin film transistor;
  • a source of the fourth thin film transistor is electrically connected to the DC voltage, and a drain of the fourth
  • the sensing unit includes a fifth thin film transistor and a sixth thin film transistor; a gate of the fifth thin film transistor is electrically connected to the second scan line, and the fifth thin film transistor A source electrode is electrically connected to the sensing line, a drain electrode of the fifth thin film transistor is electrically connected to a drain electrode of the sixth thin film transistor, and a gate of the sixth thin film transistor is electrically connected to the first thin film transistor. Source of six thin film transistors.
  • the second pixel includes a seventh thin film transistor, an eighth thin film transistor, and a second light emitting diode; a gate of the seventh thin film transistor is electrically connected to the first scan line, The source of the seventh thin film transistor is electrically connected to the second data line, and the drain of the seventh thin film transistor is electrically connected to the gate of the eighth thin film transistor; A source is electrically connected to the DC voltage, and a drain of the eighth thin film transistor is electrically connected to the second light emitting diode.
  • the first scan line in the first state, is selected, and the first thin film transistor and the seventh thin film transistor are turned on; in the first state, the second scan line is not It is selected that the third thin film transistor and the fifth thin film transistor are non-conductive, the infrared light emitting diode is non-conductive, and the sensing unit does not sense infrared light.
  • the first scan line is not selected, the first thin film transistor and the seventh thin film transistor are not turned on; in the second state, the second scan The line is selected, the third thin film transistor and the fifth thin film transistor are turned on, the infrared light emitting diode is turned on, and the sensing unit senses infrared light.
  • the infrared light emitting diode is integrated into the first light emitting diode.
  • a light emitting diode display device with infrared recognition includes a plurality of pixel units, each of the plurality of pixel units includes: a first scan line; a second scan line; a first A data line; a second data line; an induction line; a first pixel electrically connected to the first scan line, the second scan line, and the first data line and used to generate infrared light; a sensor A unit electrically connected to the second scanning line and the sensing line and configured to sense infrared light; and a second pixel electrically connected to the first scanning line and the second data line.
  • the light emitting diode display device with infrared recognition further includes at least one source driving unit, the source driving unit is electrically connected to the first data line and the second data line, The first data line provides a data signal to the first pixel and provides the data signal to the second pixel through the second data line.
  • the light emitting diode display device with infrared recognition further includes at least one gate driving unit, the gate driving unit is electrically connected to the first scanning line and the second scanning line and is used for The first scan line and the second scan line are sequentially selected.
  • the light emitting diode display device with infrared recognition further includes at least one reading unit, the reading unit is electrically connected to the sensing line and used for reading infrared light sensed by the sensing unit. .
  • the first pixel includes a first thin film transistor, a second thin film transistor, a first light emitting diode, a third thin film transistor, a fourth thin film transistor, and an infrared light emitting diode;
  • a gate of a thin film transistor is electrically connected to the first scan line, a source of the first thin film transistor is electrically connected to the first data line, and a drain of the first thin film transistor is electrically connected to A gate of the second thin film transistor;
  • a source of the second thin film transistor is electrically connected to a direct current voltage, and a drain of the second thin film transistor is electrically connected to the first light emitting diode;
  • the gate of the three thin film transistors is electrically connected to the second scan line, the source of the third thin film transistor is electrically connected to the first data line, and the drain of the third thin film transistor is electrically connected to A gate of the fourth thin film transistor;
  • a source of the fourth thin film transistor is electrically connected to the DC voltage, and a drain of the fourth
  • the sensing unit includes a fifth thin film transistor and a sixth thin film transistor; a gate of the fifth thin film transistor is electrically connected to the second scan line, and the fifth thin film transistor A source electrode is electrically connected to the sensing line, a drain electrode of the fifth thin film transistor is electrically connected to a drain electrode of the sixth thin film transistor, and a gate of the sixth thin film transistor is electrically connected to the first thin film transistor. Source of six thin film transistors.
  • the second pixel includes a seventh thin film transistor, an eighth thin film transistor, and a second light emitting diode; a gate of the seventh thin film transistor is electrically connected to the first scan line, The source of the seventh thin film transistor is electrically connected to the second data line, and the drain of the seventh thin film transistor is electrically connected to the gate of the eighth thin film transistor; A source is electrically connected to the DC voltage, and a drain of the eighth thin film transistor is electrically connected to the second light emitting diode.
  • the first scan line in the first state, is selected, and the first thin film transistor and the seventh thin film transistor are turned on; in the first state, the second scan line is not It is selected that the third thin film transistor and the fifth thin film transistor are non-conductive, the infrared light emitting diode is non-conductive, and the sensing unit does not sense infrared light.
  • the first scan line is not selected, the first thin film transistor and the seventh thin film transistor are not turned on; in the second state, the second scan The line is selected, the third thin film transistor and the fifth thin film transistor are turned on, the infrared light emitting diode is turned on, and the sensing unit senses infrared light.
  • the infrared light emitting diode is integrated into the first light emitting diode.
  • the infrared light-emitting diode and the sensing unit are made in a display area (pixel array), so there is no need to set an external identification module, thereby achieving full-screen identification. (Such as fingerprint recognition) and reduce the volume and weight of the LED display device.
  • FIG. 1 shows a schematic diagram of a light emitting diode display device with infrared recognition according to an embodiment of the present disclosure.
  • FIG. 2 shows a circuit diagram of a pixel unit according to an embodiment of the present disclosure.
  • FIG. 3 shows waveforms of a first scan line, a second scan line, a first data line, and a second data line according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram showing an arrangement of a first light emitting diode, an infrared light emitting diode, and a second light emitting diode according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram showing some structures of a first light emitting diode, an infrared light emitting diode, and a sensing unit according to an embodiment of the present disclosure.
  • FIG. 1 shows a schematic diagram of a light emitting diode display device with infrared recognition according to an embodiment of the present disclosure.
  • FIG. 2 shows a circuit diagram of a pixel unit according to an embodiment of the present disclosure.
  • the light emitting diode display device may be an organic light emitting diode (Organic Light Emitting Diode, OLED) display device.
  • the light emitting diode display device includes a plurality of pixel units 10, at least one source driving unit 12 (one source driving unit 12 is shown in the figure), and at least one gate driving unit 14 (one gate driving unit 14 is shown in the figure) And at least one reading unit 16 (one reading unit 16 is shown in the figure).
  • the plurality of pixel units 10 are electrically connected to the source driving unit 12, the gate driving unit 14 and the reading unit 16.
  • Each of the plurality of pixel units 10 includes a first scan line S (n), a second scan line S (n + 1), a first data line D (n), and a second data line D (n +1), a sensing line R (n), a first pixel 100, a sensing unit 102, and a second pixel 104.
  • the first scanning line S (n) and the second scanning line S (n + 1) are formed along a first direction.
  • the first data line D (n), the second data line D (n + 1), and the induction line R (n) are formed along a second direction.
  • the first direction is perpendicular to the second direction.
  • the source driving unit 12 is electrically connected to the first data line D (n) and the second data line D (n + 1), and to the first data line D (n) to the first data line D (n).
  • a pixel 100 provides a data signal and provides a data signal to the second pixel 104 through the second data line D (n + 1).
  • the gate driving unit 14 is electrically connected to the first scan line S (n) and the second scan line S (n + 1) and is used to sequentially select the first scan line S (n) and The second scanning line S (n + 1) is used to sequentially turn on the first scanning line S (n) and the second scanning line S (n + 1).
  • the reading unit 16 is electrically connected to the sensing line R (n) and configured to read infrared light sensed by the sensing unit 102.
  • the reading unit 16 may be integrated into the source driving unit 12.
  • the first pixel 100 is electrically connected to the first scan line S (n), the second scan line S (n + 1), and the first data line D (n).
  • the first pixel 100 is used for displaying an image and generating infrared light.
  • the first pixel 100 includes a first thin film transistor T11, a second thin film transistor T12, a first light emitting diode LED_1, a third thin film transistor T21, a fourth thin film transistor T22, and an infrared light emitting diode LED_IR.
  • the first thin film transistor T11, the second thin film transistor T12, and the first light emitting diode LED_1 are used to display an image.
  • the third thin film transistor T21, the fourth thin film transistor T22, and the infrared light emitting diode LED_IR are used to emit infrared light.
  • the gate of the first thin film transistor T11 is electrically connected to the first scan line S (n), and the source of the first thin film transistor T11 is electrically connected to the first data line D (n).
  • the drain of the first thin film transistor T11 is electrically connected to the gate of the second thin film transistor T12.
  • a source of the second thin film transistor T12 is electrically connected to a DC voltage VDD, and a drain of the second thin film transistor T12 is electrically connected to the first light emitting diode LED_1.
  • a gate of the third thin film transistor T21 is electrically connected to the second scan line S (n + 1), and a source of the third thin film transistor T21 is electrically connected to the first data line D (n ), The drain of the third thin film transistor T21 is electrically connected to the gate of the fourth thin film transistor T22.
  • a source of the fourth thin film transistor T22 is electrically connected to the DC voltage VDD, and a drain of the fourth thin film transistor T22 is electrically connected to the infrared light emitting diode LED_IR.
  • the sensing unit 102 is electrically connected to the second scanning line S (n + 1) and the sensing line R (n) and is configured to sense infrared light emitted by the infrared light emitting diode LED_IR or infrared light in the environment.
  • the sensing unit 102 includes a fifth thin film transistor T31 and a sixth thin film transistor T32.
  • the gate of the fifth thin film transistor T31 is electrically connected to the second scan line S (n + 1), and the source of the fifth thin film transistor T31 is electrically connected to the induction line R (n).
  • the drain of the fifth thin film transistor T31 is electrically connected to the drain of the sixth thin film transistor T32.
  • the gate of the sixth thin film transistor T32 is electrically connected to the source of the sixth thin film transistor T32.
  • the light-emitting diode display device of the present disclosure is characterized in that the infrared light-emitting diode LED_IR (for emitting infrared light) and the sensing unit 102 (for sensing infrared light) are made in a display area (pixel array), so there is no need to set
  • the external identification module can achieve full-screen identification (such as fingerprint identification) and reduce the volume and weight of the LED display device.
  • the infrared light emitting diode LED_IR for emitting infrared light
  • the sensing unit 102 for sensing infrared light
  • the reading unit 16 can achieve fingerprint recognition, high-precision handwriting input recognition, gesture operation recognition, and infrared imaging And other functions.
  • the second pixel 104 is electrically connected to the first scan line S (n) and the second data line D (n + 1).
  • the second pixel 104 includes a seventh thin film transistor T41, an eighth thin film transistor T42, and a second light emitting diode LED_2.
  • the gate of the seventh thin film transistor T41 is electrically connected to the first scan line S (n), and the source of the seventh thin film transistor T41 is electrically connected to the second data line D (n + 1). ), The drain of the seventh thin film transistor T41 is electrically connected to the gate of the eighth thin film transistor T42.
  • the source of the eighth thin film transistor T42 is electrically connected to the DC voltage VDD, and the drain of the eighth thin film transistor T42 is electrically connected to the second light emitting diode LED_2.
  • FIG. 3 shows a first scan line S (n), a second scan line S (n + 1), a first data line D (n), and a second data line according to an embodiment of the present disclosure. Waveform of D (n + 1).
  • the first scan line S (n) is selected (low potential), the first thin film transistor T11 and the seventh thin film transistor T41 are turned on, and the first data line D ( n) a data signal is written into the first pixel 100 (controls whether the first light emitting diode LED_1 emits light or not), and a data signal of the second data line D (n + 1) is written into the second pixel 104 ( Controlling the second light emitting diode LED_2 to emit light or not to emit light).
  • the second scanning line S (n + 1) is not selected (high potential)
  • the third thin film transistor T21 and the fifth thin film transistor T31 are not turned on, and the infrared light is emitted.
  • the diode LED_IR is non-conductive (not emitting light), and the sensing unit 102 does not sense infrared light.
  • the first scan line S (n) is not selected (high potential), the first thin film transistor T11 and the seventh thin film transistor T41 are not turned on, and the first data line A data signal of D (n) is not written into the first light emitting diode LED_1, and a data signal of the second data line D (n + 1) is not written into the second light emitting diode LED_2.
  • the second scanning line S (n + 1) is selected (low potential)
  • the third thin film transistor T21 and the fifth thin film transistor T31 are turned on
  • the infrared light emitting diode LED_IR It is turned on (light-emitting)
  • the sensing unit 102 senses infrared light.
  • FIG. 4 shows an arrangement diagram of the first light-emitting diode LED_1, the infrared light-emitting diode LED_IR, and the second light-emitting diode LED_2 according to an embodiment of the present disclosure.
  • the first light-emitting diode LED_1, the infrared light-emitting diode LED_IR, and the second light-emitting diode LED_2 exhibit a diamond-shaped distribution.
  • the changes in the characteristics of the green light-emitting diode are smaller than the characteristics of the red and blue light-emitting diodes
  • the infrared light-emitting diode LED_IR is integrated into the green first light-emitting diode.
  • LED_1 can not only effectively use space, but also reduce the influence of the infrared light emitting diode LED_IR on resolution. That is, the first light emitting diode LED_1 may be a green light emitting diode, and the second light emitting diode LED_2 may be a red light emitting diode or a blue light emitting diode.
  • the area of the diamond 50 shown in FIG. 4 two ends of a diagonal line are infrared light emitting diodes LED_IR integrated into a green light emitting diode, and two ends of another diagonal line are a red light emitting diode and a blue light emitting diode, respectively. Therefore, the area of the diamond 50 includes a green light emitting diode, a red light emitting diode, a blue light emitting diode, and an infrared light emitting diode LED_IR.
  • the infrared light emitting diode LED_IR may also be integrated into a red light emitting diode or a blue light emitting diode.
  • FIG. 5 shows a partial structure diagram of the first light-emitting diode LED_1, the infrared light-emitting diode LED_IR, and the sensing unit 102 according to the embodiment of the present disclosure.
  • the flexible substrate 500 may be, but is not limited to, a polyimide (PI) flexible substrate.
  • PI polyimide
  • the material of the semiconductor layer 501 is, for example, low temperature polysilicon. Poly-Silicon, LTPS).
  • a buffer layer may be disposed between the flexible substrate 500 and the semiconductor layer 501.
  • a material of the insulating layers 502 and 503 is, for example, silicon nitride (SiNx) or silicon dioxide (SiO 2 ).
  • the translucent organic insulating layers 504 and 505 need to have good transmittance to infrared light.
  • the metal conductive layers 510, 511, and 512 serve as electrodes (gate, source, and drain) of the thin film transistor (the first thin film transistor T11 or the second thin film transistor T12) for controlling the first light emitting diode LED_1 in FIG. 2.
  • the metal conductive layers 512, 521, and 522 serve as electrodes (gate, source, and drain) of the thin film transistor (third thin film transistor T21 or fourth thin film transistor T22) for controlling the infrared light emitting diode LED_IR in FIG. 2.
  • the metal conductive layers 530, 531, and 532 serve as electrodes (gate, source, and drain) of the thin film transistor (the fifth thin film transistor T31 or the sixth thin film transistor T32) of the sensing unit 102 in FIG. 2.
  • the anode 540, the organic light emitting layer 541, and the cathode 560 form the first light emitting diode of FIG. 2.
  • the anode 540 has a reflective layer, such as ITO-Ag-ITO.
  • the organic light emitting layer 541 can generate red light, green light or blue light.
  • the cathode 560 is a transparent electrode.
  • the anode 550, the organic light emitting layer 551, and the cathode 560 form the infrared light emitting diode LED_IR of FIG. 2.
  • the anode 550 has a reflective layer, such as ITO-Ag-ITO.
  • the organic light emitting layer 551 can generate infrared light.
  • the semiconductor layer 533 and the light blocking layer 534 form a light sensing structure of the sensing unit 102 of FIG. 2.
  • the semiconductor layer 533 is sensitive to infrared light, such as germanium-doped amorphous silicon (a-Si).
  • a-Si germanium-doped amorphous silicon
  • the light blocking layer 534 can block visible light and allow infrared light to pass through, for example, a film structure containing an amorphous silicon germanium (a-SiGe) material.
  • the light L1 is visible light emitted by the first light emitting diode LED_1 of the first pixel 100 in FIG. 2 when displaying an image.
  • the light L2 is infrared light emitted by the infrared light emitting diode LED_IR of FIG. 2.
  • the light L3 is infrared light reflected by the light L2 after encountering the object to be detected or infrared light in the environment.
  • the infrared light-emitting diode and the sensing unit are made in a display area (pixel array), so there is no need to set an external identification module, thereby achieving full-screen identification (such as fingerprint identification) and reducing The volume and weight of the light emitting diode display device.

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Abstract

一种具有红外识别的发光二极管显示装置包括多个像素单元，每一所述多个像素单元包括：一第一扫描线；一第二扫描线；一第一数据线；一第二数据线；一感应线；一第一像素，电性连接至所述第一扫描线、所述第二扫描线及所述第一数据线并用于产生红外光；一感应单元，电性连接至所述第二扫描线及所述感应线并用于感应红外光；以及一第二像素，电性连接至所述第一扫描线及所述第二数据线。

Description

具有红外识别的发光二极管显示装置 技术领域
本揭示涉及显示装置技术领域，特别是涉及一种具有红外识别的发光二极管显示装置。
 背景技术
随着多媒体的发展，视觉呈现的方式也越来越多样化，人机互动交流越来越频繁，因此人机交流互动的方式受到使用者的重视。
手写、纹识识别、触屏等是目前应用最多且最普及的人机交流方式。传统的指纹识别依赖外挂式指纹识别模块，在机构设计等方面存在诸多限制。随着全屏、高屏占比等概念和相关产品的普及，人们对传统纹识别或生物识别的要求越来越高。更明确地说，如果能实现全屏指纹识别，则无需设置外挂式指纹识别模块，可降低电子装置的体积及重量。
因此需要对现有技术中的问题提出解决方法。
 技术问题
本揭示的目的在于提供一种具有红外识别的发光二极管显示装置，其能解决现有技术中的问题。
 技术解决方案
为解决上述问题，本揭示提供的一种具有红外识别的发光二极管显示装置包括多个像素单元，每一所述多个像素单元包括：一第一扫描线；一第二扫描线；一第一数据线；一第二数据线；一感应线；一第一像素，电性连接至所述第一扫描线、所述第二扫描线及所述第一数据线并用于产生红外光；一感应单元，电性连接至所述第二扫描线及所述感应线并用于感应红外光；一第二像素，电性连接至所述第一扫描线及所述第二数据线；至少一栅极驱动单元，电性连接至所述第一扫描线及所述第二扫描线并用于依序选择所述第一扫描线及所述第二扫描线；以及至少一读取单元，所述读取单元电性连接至所述感应线并用于读取所述感应单元所感应的红外光。
于一实施例中，所述具有红外识别的发光二极管显示装置进一步包括至少一源极驱动单元，所述源极驱动单元电性连接至所述第一数据线及所述第二数据线、通过所述第一数据线向所述第一像素提供数据信号并通过所述第二数据线向所述第二像素提供数据信号。
于一实施例中，所述第一像素包括一第一薄膜晶体管、一第二薄膜晶体管、一第一发光二极管、一第三薄膜晶体管、一第四薄膜晶体管以及一红外发光二极管；所述第一薄膜晶体管的栅极电性连接至所述第一扫描线，所述第一薄膜晶体管的源极电性连接至所述第一数据线，所述第一薄膜晶体管的汲极电性连接至所述第二薄膜晶体管的栅极；所述第二薄膜晶体管的源极电性连接至一直流电压，所述第二薄膜晶体管的汲极电性连接至所述第一发光二极管；所述第三薄膜晶体管的栅极电性连接至所述第二扫描线，所述第三薄膜晶体管的源极电性连接至所述第一数据线，所述第三薄膜晶体管的汲极电性连接至所述第四薄膜晶体管的栅极；所述第四薄膜晶体管的源极电性连接至所述直流电压，所述第四薄膜晶体管的汲极电性连接至所述红外发光二极管。
于一实施例中，所述感应单元包括一第五薄膜晶体管以及一第六薄膜晶体管；所述第五薄膜晶体管的栅极电性连接至所述第二扫描线，所述第五薄膜晶体管的源极电性连接至所述感应线，所述第五薄膜晶体管的汲极电性连接至所述第六薄膜晶体管的汲极；所述第六薄膜晶体管的栅极电性连接至所述第六薄膜晶体管的源极。
于一实施例中，所述第二像素包括一第七薄膜晶体管、一第八薄膜晶体管以及一第二发光二极管；所述第七薄膜晶体管的栅极电性连接至所述第一扫描线，所述第七薄膜晶体管的源极电性连接至所述第二数据线，所述第七薄膜晶体管的汲极电性连接至所述第八薄膜晶体管的栅极；所述第八薄膜晶体管的源极电性连接至所述直流电压，所述第八薄膜晶体管的汲极电性连接至所述第二发光二极管。
于一实施例中，在第一状态时，所述第一扫描线被选择，所述第一薄膜晶体管及所述第七薄膜晶体管导通；在第一状态时，所述第二扫描线未被选择，所述第三薄膜晶体管及所述第五薄膜晶体管不导通，所述红外发光二极管不导通，所述感应单元不感应红外光。
于一实施例中，在第二状态时，所述第一扫描线未被选择，所述第一薄膜晶体管及所述第七薄膜晶体管不导通；在第二状态时，所述第二扫描线被选择，所述第三薄膜晶体管及所述第五薄膜晶体管导通，所述红外发光二极管导通，所述感应单元感应红外光。
于一实施例中，所述红外发光二极管集成至所述第一发光二极管。
为解决上述问题，本揭示提供的一种具有红外识别的发光二极管显示装置包括多个像素单元，每一所述多个像素单元包括：一第一扫描线；一第二扫描线；一第一数据线；一第二数据线；一感应线；一第一像素，电性连接至所述第一扫描线、所述第二扫描线及所述第一数据线并用于产生红外光；一感应单元，电性连接至所述第二扫描线及所述感应线并用于感应红外光；以及一第二像素，电性连接至所述第一扫描线及所述第二数据线。
于一实施例中，所述具有红外识别的发光二极管显示装置进一步包括至少一源极驱动单元，所述源极驱动单元电性连接至所述第一数据线及所述第二数据线、通过所述第一数据线向所述第一像素提供数据信号并通过所述第二数据线向所述第二像素提供数据信号。
于一实施例中，所述具有红外识别的发光二极管显示装置进一步包括至少一栅极驱动单元，所述栅极驱动单元电性连接至所述第一扫描线及所述第二扫描线并用于依序选择所述第一扫描线及所述第二扫描线。
于一实施例中，所述具有红外识别的发光二极管显示装置进一步包括至少一读取单元，所述读取单元电性连接至所述感应线并用于读取所述感应单元所感应的红外光。
于一实施例中，所述第一像素包括一第一薄膜晶体管、一第二薄膜晶体管、一第一发光二极管、一第三薄膜晶体管、一第四薄膜晶体管以及一红外发光二极管；所述第一薄膜晶体管的栅极电性连接至所述第一扫描线，所述第一薄膜晶体管的源极电性连接至所述第一数据线，所述第一薄膜晶体管的汲极电性连接至所述第二薄膜晶体管的栅极；所述第二薄膜晶体管的源极电性连接至一直流电压，所述第二薄膜晶体管的汲极电性连接至所述第一发光二极管；所述第三薄膜晶体管的栅极电性连接至所述第二扫描线，所述第三薄膜晶体管的源极电性连接至所述第一数据线，所述第三薄膜晶体管的汲极电性连接至所述第四薄膜晶体管的栅极；所述第四薄膜晶体管的源极电性连接至所述直流电压，所述第四薄膜晶体管的汲极电性连接至所述红外发光二极管。
于一实施例中，所述感应单元包括一第五薄膜晶体管以及一第六薄膜晶体管；所述第五薄膜晶体管的栅极电性连接至所述第二扫描线，所述第五薄膜晶体管的源极电性连接至所述感应线，所述第五薄膜晶体管的汲极电性连接至所述第六薄膜晶体管的汲极；所述第六薄膜晶体管的栅极电性连接至所述第六薄膜晶体管的源极。
于一实施例中，所述第二像素包括一第七薄膜晶体管、一第八薄膜晶体管以及一第二发光二极管；所述第七薄膜晶体管的栅极电性连接至所述第一扫描线，所述第七薄膜晶体管的源极电性连接至所述第二数据线，所述第七薄膜晶体管的汲极电性连接至所述第八薄膜晶体管的栅极；所述第八薄膜晶体管的源极电性连接至所述直流电压，所述第八薄膜晶体管的汲极电性连接至所述第二发光二极管。
于一实施例中，在第一状态时，所述第一扫描线被选择，所述第一薄膜晶体管及所述第七薄膜晶体管导通；在第一状态时，所述第二扫描线未被选择，所述第三薄膜晶体管及所述第五薄膜晶体管不导通，所述红外发光二极管不导通，所述感应单元不感应红外光。
于一实施例中，在第二状态时，所述第一扫描线未被选择，所述第一薄膜晶体管及所述第七薄膜晶体管不导通；在第二状态时，所述第二扫描线被选择，所述第三薄膜晶体管及所述第五薄膜晶体管导通，所述红外发光二极管导通，所述感应单元感应红外光。
于一实施例中，所述红外发光二极管集成至所述第一发光二极管。
 有益效果
相较于现有技术，本揭示之发光二极管显示装置中，将所述红外发光二极管及所述感应单元制作于显示区（像素阵列）中，故无需设置外挂式识别模块，进而能达成全屏识别（例如指纹识别）并降低发光二极管显示装置的体积及重量。
 附图说明
图1显示根据本揭示实施例之具有红外识别的发光二极管显示装置的示意图。
图2显示根据本揭示实施例之像素单元的电路图。
图3显示根据本揭示实施例之第一扫描线、第二扫描线、第一数据线、第二数据线的波形图。
图4显示根据本揭示实施例之第一发光二极管、红外发光二极管及第二发光二极管的排列示意图。
图5显示根据本揭示实施例之第一发光二极管、红外发光二极管及感应单元的部分结构示意图。
 本发明的实施方式
以下各实施例的说明是参考附加的图式，用以例示本揭示可用以实施的特定实施例。
请参阅图1以及图2，图1显示根据本揭示实施例之具有红外识别的发光二极管显示装置的示意图。图2显示根据本揭示实施例之像素单元的电路图。
所述发光二极管显示装置可以为一有机发光二极管（Organic Light Emitting Diode，OLED）显示装置。所述发光二极管显示装置包括多个像素单元10、至少一源极驱动单元12（图中显示一个源极驱动单元12）、至少一栅极驱动单元14（图中显示一个栅极驱动单元14）以及至少一读取单元16（图中显示一个读取单元16）。
所述多个像素单元10电性连接至所述源极驱动单元12、所述栅极驱动单元14以及所述读取单元16。每一所述多个像素单元10包括一第一扫描线S(n)、一第二扫描线S(n+1)、一第一数据线D(n)、一第二数据线D(n+1)、一感应线R(n)、一第一像素100、一感应单元102以及一第二像素104。
所述第一扫描线S(n)及所述第二扫描线S(n+1)沿一第一方向形成。所述第一数据线D(n)、所述第二数据线D(n+1)及所述感应线R(n)沿一第二方向形成。所述第一方向垂直于所述第二方向。
所述源极驱动单元12电性连接至所述第一数据线D(n)及所述第二数据线D(n+1)、通过所述第一数据线D(n)向所述第一像素100提供数据信号并通过所述第二数据线D(n+1)向所述第二像素104提供数据信号。
所述栅极驱动单元14电性连接至所述第一扫描线S(n)及所述第二扫描线S(n+1)并用于依序选择所述第一扫描线S(n)及所述第二扫描线S(n+1)以使所述第一扫描线S(n)及所述第二扫描线S(n+1)依序导通。
所述读取单元16电性连接至所述感应线R(n)并用于读取所述感应单元102所感应的红外光。
于一实施例中，所述读取单元16可以集成至所述源极驱动单元12。
所述第一像素100电性连接至所述第一扫描线S(n)、所述第二扫描线S(n+1)及所述第一数据线D(n)。所述第一像素100用于显示一影像并产生红外光。所述第一像素100包括一第一薄膜晶体管T11、一第二薄膜晶体管T12、一第一发光二极管LED_1、一第三薄膜晶体管T21、一第四薄膜晶体管T22以及一红外发光二极管LED_IR。
所述第一薄膜晶体管T11、所述第二薄膜晶体管T12及所述第一发光二极管LED_1用于显示影像。所述第三薄膜晶体管T21、所述第四薄膜晶体管T22及所述红外发光二极管LED_IR用于发射红外光。
所述第一薄膜晶体管T11的栅极电性连接至所述第一扫描线S(n)，所述第一薄膜晶体管T11的源极电性连接至所述第一数据线D(n)，所述第一薄膜晶体管T11的汲极电性连接至所述第二薄膜晶体管T12的栅极。
所述第二薄膜晶体管T12的源极电性连接至一直流电压VDD，所述第二薄膜晶体管T12的汲极电性连接至所述第一发光二极管LED_1。
所述第三薄膜晶体管T21的栅极电性连接至所述第二扫描线S(n+1)，所述第三薄膜晶体管T21的源极电性连接至所述第一数据线D(n)，所述第三薄膜晶体管T21的汲极电性连接至所述第四薄膜晶体管T22的栅极。
所述第四薄膜晶体管T22的源极电性连接至所述直流电压VDD，所述第四薄膜晶体管T22的汲极电性连接至所述红外发光二极管LED_IR。
所述感应单元102电性连接至所述第二扫描线S(n+1)及所述感应线R(n)并用于感应所述红外发光二极管LED_IR发射的红外光或者环境中的红外光。所述感应单元102包括一第五薄膜晶体管T31以及一第六薄膜晶体管T32。
所述第五薄膜晶体管T31的栅极电性连接至所述第二扫描线S(n+1)，所述第五薄膜晶体管T31的源极电性连接至所述感应线R(n)，所述第五薄膜晶体管T31的汲极电性连接至所述第六薄膜晶体管T32的汲极。
所述第六薄膜晶体管T32的栅极电性连接至所述第六薄膜晶体管T32的源极。
本揭示之发光二极管显示装置的特点在于将所述红外发光二极管LED_IR（用于发射红外光）及所述感应单元102（用于感应红外光）制作于显示区（像素阵列）中，故无需设置外挂式识别模块，进而能达成全屏识别（例如指纹识别）并降低发光二极管显示装置的体积及重量。
所述红外发光二极管LED_IR（用于发射红外光）、所述感应单元102（用于感应红外光）及所述读取单元16可达到指纹识别、高精度手写输入识别、手势操作识别、红外成像等功能。
所述第二像素104电性连接至所述第一扫描线S(n)及所述第二数据线D(n+1)。所述第二像素104包括一第七薄膜晶体管T41、一第八薄膜晶体管T42以及一第二发光二极管LED_2。
所述第七薄膜晶体管T41的栅极电性连接至所述第一扫描线S(n)，所述第七薄膜晶体管T41的源极电性连接至所述第二数据线D(n+1)，所述第七薄膜晶体管T41的汲极电性连接至所述第八薄膜晶体管T42的栅极。
所述第八薄膜晶体管T42的源极电性连接至所述直流电压VDD，所述第八薄膜晶体管T42的汲极电性连接至所述第二发光二极管LED_2。
请参阅图1至图3，图3显示根据本揭示实施例之第一扫描线S(n)、第二扫描线S(n+1)、第一数据线D(n)、第二数据线D(n+1)的波形图。
在第一状态S1时，所述第一扫描线S(n)被选择（低电位），所述第一薄膜晶体管T11及所述第七薄膜晶体管T41导通，所述第一数据线D(n)的数据信号写入第一像素100（控制所述第一发光二极管LED_1发光或不发光），所述第二数据线D(n+1)的数据信号写入所述第二像素104（控制所述第二发光二极管LED_2发光或不发光）。
在第一状态S1时，所述第二扫描线S(n+1)未被选择（高电位），所述第三薄膜晶体管T21及所述第五薄膜晶体管T31不导通，所述红外发光二极管LED_IR不导通（不发光），所述感应单元102不感应红外光。
在第二状态S2时，所述第一扫描线S(n)未被选择（高电位），所述第一薄膜晶体管T11及所述第七薄膜晶体管T41不导通，所述第一数据线D(n)的数据信号不会写入所述第一发光二极管LED_1，所述第二数据线D(n+1)的数据信号不会写入所述第二发光二极管LED_2。
在第二状态S2时，所述第二扫描线S(n+1)被选择（低电位），所述第三薄膜晶体管T21及所述第五薄膜晶体管T31导通，所述红外发光二极管LED_IR导通（发光），所述感应单元102感应红外光。
请参阅图4，图4显示根据本揭示实施例之第一发光二极管LED_1、红外发光二极管LED_IR及第二发光二极管LED_2的排列示意图。
所述第一发光二极管LED_1、所述红外发光二极管LED_IR及所述第二发光二极管LED_2呈现菱形分布。于一实施例中，由于绿色发光二极管的特性（例如发光效率及寿命）的变化小于红色发光二极管及蓝色发光二极管的特性变化，因此将所述红外发光二极管LED_IR集成至绿色的第一发光二极管LED_1不仅能有效利用空间，还能够降低所述红外发光二极管LED_IR对分辨率的影响。也就是说，所述第一发光二极管LED_1可以为绿色发光二极管，所述第二发光二极管LED_2可以为红色发光二极管或蓝色发光二极管。
如图4所示的菱形50的区域中，一对角线的两端为红外发光二极管LED_IR集成至绿色发光二极管，另一对角线的两端分别为红色发光二极管及蓝色发光二极管。因此，菱形50的区域包括绿色发光二极管、红色发光二极管、蓝色发光二极管及红外发光二极管LED_IR。
要说明的是，所述红外发光二极管LED_IR亦可集成至红色发光二极管或蓝色发光二极管。
请参阅图5，图5显示根据本揭示实施例之第一发光二极管LED_1、红外发光二极管LED_IR及感应单元102的部分结构示意图。
柔性基板500可以但不限于为一聚酰亚胺（Polyimide，PI）柔性基板。
半导体层501的材料例如为低温多晶硅（Low Temperature Poly-Silicon，LTPS）。
所述柔性基板500与所述半导体层501之间可设置缓冲层。
绝缘层502及503的材料例如为氮化硅（SiNx）或二氧化硅（SiO 2）。
半透明有机绝缘层504及505需对红外光有较好的透过率。
金属导电层510、511及512作为图2中用于控制第一发光二极管LED_1的薄膜晶体管（第一薄膜晶体管T11或第二薄膜晶体管T12）的电极（栅极、源极和汲极）。
金属导电层512、521及522作为图2中用于控制红外发光二极管LED_IR的薄膜晶体管（第三薄膜晶体管T21或第四薄膜晶体管T22）的电极（栅极、源极和汲极）。
金属导电层530、531及532作为图2中感应单元102的薄膜晶体管（第五薄膜晶体管T31或第六薄膜晶体管T32）的电极（栅极、源极和汲极）。
阳极540、有机发光层541及阴极560形成图2之第一发光二极管。所述阳极540具有反射层，例如ITO-Ag-ITO。所述有机发光层541能产生红光、绿光或蓝光。所述阴极560为透明电极。
阳极550、有机发光层551及所述阴极560形成图2之红外发光二极管LED_IR。所述阳极550具有反射层，例如ITO-Ag-ITO。所述有机发光层551能产生红外光。
半导体层533及阻光层534形成图2之感应单元102的光感应结构。所述半导体层533对红外光敏感，例如掺杂锗的非晶硅（a-Si）。当红外光照射所述半导体层533时会影响所述感应单元102的薄膜晶体管（第五薄膜晶体管T31或第六薄膜晶体管T32）的电流。所述阻光层534可阻挡可见光并让红外光通过，例如为含有非晶硅锗（a-SiGe）材料的膜层结构。
光线L1为图2之第一像素100的第一发光二极管LED_1在显示影像时发出的可见光。光线L2为图2之红外发光二极管LED_IR发射的红外光。光线L3为光线L2在遇到待探测物后反射的红外光或者环境中的红外光。
本揭示之发光二极管显示装置中，将所述红外发光二极管及所述感应单元制作于显示区（像素阵列）中，故无需设置外挂式识别模块，进而能达成全屏识别（例如指纹识别）并降低发光二极管显示装置的体积及重量。
综上所述，虽然本揭示已以优选实施例揭露如上，但上述优选实施例并非用以限制本揭示，本领域的普通技术人员，在不脱离本揭示的精神和范围内，均可作各种更动与润饰，因此本揭示的保护范围以权利要求界定的范围为准。

Claims (18)

  1. 一种具有红外识别的发光二极管显示装置，包括多个像素单元，每一所述多个像素单元包括：
    一第一扫描线；
    一第二扫描线；
    一第一数据线；
    一第二数据线；
    一感应线；
    一第一像素，电性连接至所述第一扫描线、所述第二扫描线及所述第一数据线并用于产生红外光；
    一感应单元，电性连接至所述第二扫描线及所述感应线并用于感应红外光；
    一第二像素，电性连接至所述第一扫描线及所述第二数据线；
    至少一栅极驱动单元，电性连接至所述第一扫描线及所述第二扫描线并用于依序选择所述第一扫描线及所述第二扫描线；以及
    至少一读取单元，所述读取单元电性连接至所述感应线并用于读取所述感应单元所感应的红外光。
  2. 根据权利要求1所述的具有红外识别的发光二极管显示装置，进一步包括至少一源极驱动单元，所述源极驱动单元电性连接至所述第一数据线及所述第二数据线、通过所述第一数据线向所述第一像素提供数据信号并通过所述第二数据线向所述第二像素提供数据信号。
  3. 根据权利要求1所述的具有红外识别的发光二极管显示装置，其中所述第一像素包括一第一薄膜晶体管、一第二薄膜晶体管、一第一发光二极管、一第三薄膜晶体管、一第四薄膜晶体管以及一红外发光二极管；
    所述第一薄膜晶体管的栅极电性连接至所述第一扫描线，所述第一薄膜晶体管的源极电性连接至所述第一数据线，所述第一薄膜晶体管的汲极电性连接至所述第二薄膜晶体管的栅极；
    所述第二薄膜晶体管的源极电性连接至一直流电压，所述第二薄膜晶体管的汲极电性连接至所述第一发光二极管；
    所述第三薄膜晶体管的栅极电性连接至所述第二扫描线，所述第三薄膜晶体管的源极电性连接至所述第一数据线，所述第三薄膜晶体管的汲极电性连接至所述第四薄膜晶体管的栅极；
    所述第四薄膜晶体管的源极电性连接至所述直流电压，所述第四薄膜晶体管的汲极电性连接至所述红外发光二极管。
  4. 根据权利要求3所述的具有红外识别的发光二极管显示装置，其中所述感应单元包括一第五薄膜晶体管以及一第六薄膜晶体管；
    所述第五薄膜晶体管的栅极电性连接至所述第二扫描线，所述第五薄膜晶体管的源极电性连接至所述感应线，所述第五薄膜晶体管的汲极电性连接至所述第六薄膜晶体管的汲极；
    所述第六薄膜晶体管的栅极电性连接至所述第六薄膜晶体管的源极。
  5. 根据权利要求4所述的具有红外识别的发光二极管显示装置，其中所述第二像素包括一第七薄膜晶体管、一第八薄膜晶体管以及一第二发光二极管；
    所述第七薄膜晶体管的栅极电性连接至所述第一扫描线，所述第七薄膜晶体管的源极电性连接至所述第二数据线，所述第七薄膜晶体管的汲极电性连接至所述第八薄膜晶体管的栅极；
    所述第八薄膜晶体管的源极电性连接至所述直流电压，所述第八薄膜晶体管的汲极电性连接至所述第二发光二极管。
  6. 根据权利要求5所述的具有红外识别的发光二极管显示装置，其中在第一状态时，所述第一扫描线被选择，所述第一薄膜晶体管及所述第七薄膜晶体管导通；
    在第一状态时，所述第二扫描线未被选择，所述第三薄膜晶体管及所述第五薄膜晶体管不导通，所述红外发光二极管不导通，所述感应单元不感应红外光。
  7. 根据权利要求6所述的具有红外识别的发光二极管显示装置，其中在第二状态时，所述第一扫描线未被选择，所述第一薄膜晶体管及所述第七薄膜晶体管不导通；
    在第二状态时，所述第二扫描线被选择，所述第三薄膜晶体管及所述第五薄膜晶体管导通，所述红外发光二极管导通，所述感应单元感应红外光。
  8. 根据权利要求3所述的具有红外识别的发光二极管显示装置，其中所述红外发光二极管集成至所述第一发光二极管。
  9. 一种具有红外识别的发光二极管显示装置，包括多个像素单元，每一所述多个像素单元包括：
    一第一扫描线；
    一第二扫描线；
    一第一数据线；
    一第二数据线；
    一感应线；
    一第一像素，电性连接至所述第一扫描线、所述第二扫描线及所述第一数据线并用于产生红外光；
    一感应单元，电性连接至所述第二扫描线及所述感应线并用于感应红外光；以及
    一第二像素，电性连接至所述第一扫描线及所述第二数据线。
  10. 根据权利要求9所述的具有红外识别的发光二极管显示装置，进一步包括至少一源极驱动单元，所述源极驱动单元电性连接至所述第一数据线及所述第二数据线、通过所述第一数据线向所述第一像素提供数据信号并通过所述第二数据线向所述第二像素提供数据信号。
  11. 根据权利要求9所述的具有红外识别的发光二极管显示装置，进一步包括至少一栅极驱动单元，所述栅极驱动单元电性连接至所述第一扫描线及所述第二扫描线并用于依序选择所述第一扫描线及所述第二扫描线。
  12. 根据权利要求9所述的具有红外识别的发光二极管显示装置，进一步包括至少一读取单元，所述读取单元电性连接至所述感应线并用于读取所述感应单元所感应的红外光。
  13. 根据权利要求9所述的具有红外识别的发光二极管显示装置，其中所述第一像素包括一第一薄膜晶体管、一第二薄膜晶体管、一第一发光二极管、一第三薄膜晶体管、一第四薄膜晶体管以及一红外发光二极管；
    所述第一薄膜晶体管的栅极电性连接至所述第一扫描线，所述第一薄膜晶体管的源极电性连接至所述第一数据线，所述第一薄膜晶体管的汲极电性连接至所述第二薄膜晶体管的栅极；
    所述第二薄膜晶体管的源极电性连接至一直流电压，所述第二薄膜晶体管的汲极电性连接至所述第一发光二极管；
    所述第三薄膜晶体管的栅极电性连接至所述第二扫描线，所述第三薄膜晶体管的源极电性连接至所述第一数据线，所述第三薄膜晶体管的汲极电性连接至所述第四薄膜晶体管的栅极；
    所述第四薄膜晶体管的源极电性连接至所述直流电压，所述第四薄膜晶体管的汲极电性连接至所述红外发光二极管。
  14. 根据权利要求13所述的具有红外识别的发光二极管显示装置，其中所述感应单元包括一第五薄膜晶体管以及一第六薄膜晶体管；
    所述第五薄膜晶体管的栅极电性连接至所述第二扫描线，所述第五薄膜晶体管的源极电性连接至所述感应线，所述第五薄膜晶体管的汲极电性连接至所述第六薄膜晶体管的汲极；
    所述第六薄膜晶体管的栅极电性连接至所述第六薄膜晶体管的源极。
  15. 根据权利要求14所述的具有红外识别的发光二极管显示装置，其中所述第二像素包括一第七薄膜晶体管、一第八薄膜晶体管以及一第二发光二极管；
    所述第七薄膜晶体管的栅极电性连接至所述第一扫描线，所述第七薄膜晶体管的源极电性连接至所述第二数据线，所述第七薄膜晶体管的汲极电性连接至所述第八薄膜晶体管的栅极；
    所述第八薄膜晶体管的源极电性连接至所述直流电压，所述第八薄膜晶体管的汲极电性连接至所述第二发光二极管。
  16. 根据权利要求15所述的具有红外识别的发光二极管显示装置，其中在第一状态时，所述第一扫描线被选择，所述第一薄膜晶体管及所述第七薄膜晶体管导通；
    在第一状态时，所述第二扫描线未被选择，所述第三薄膜晶体管及所述第五薄膜晶体管不导通，所述红外发光二极管不导通，所述感应单元不感应红外光。
  17. 根据权利要求16所述的具有红外识别的发光二极管显示装置，其中在第二状态时，所述第一扫描线未被选择，所述第一薄膜晶体管及所述第七薄膜晶体管不导通；
    在第二状态时，所述第二扫描线被选择，所述第三薄膜晶体管及所述第五薄膜晶体管导通，所述红外发光二极管导通，所述感应单元感应红外光。
  18. 根据权利要求13所述的具有红外识别的发光二极管显示装置，其中所述红外发光二极管集成至所述第一发光二极管。
PCT/CN2018/113342 2018-09-03 2018-11-01 具有红外识别的发光二极管显示装置 WO2020047981A1 (zh)

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