WO2019071560A1 - Unité de détection d'image, capteur d'image et dispositif d'affichage - Google Patents

Unité de détection d'image, capteur d'image et dispositif d'affichage Download PDF

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Publication number
WO2019071560A1
WO2019071560A1 PCT/CN2017/106011 CN2017106011W WO2019071560A1 WO 2019071560 A1 WO2019071560 A1 WO 2019071560A1 CN 2017106011 W CN2017106011 W CN 2017106011W WO 2019071560 A1 WO2019071560 A1 WO 2019071560A1
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WO
WIPO (PCT)
Prior art keywords
module
infrared light
image sensor
light
display
Prior art date
Application number
PCT/CN2017/106011
Other languages
English (en)
Chinese (zh)
Inventor
李谋涛
于泽
Original Assignee
深圳芯启航科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳芯启航科技有限公司 filed Critical 深圳芯启航科技有限公司
Priority to PCT/CN2017/106011 priority Critical patent/WO2019071560A1/fr
Publication of WO2019071560A1 publication Critical patent/WO2019071560A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
    • H01L27/144—Devices controlled by radiation
    • H01L27/146—Imager structures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/70—SSIS architectures; Circuits associated therewith

Definitions

  • This solution belongs to the field of image sensing technology, and in particular, to an image sensing unit, an image sensor, and a display device.
  • the light transmissive area is at least permeable to visible light and infrared light, and the photosensitive element receives infrared light reflected by the object and converts it into an electrical signal.
  • the photosensitive element comprises any one of a photodiode, a photoresistor, a charge coupled device, or a complementary metal oxide semiconductor.
  • the illumination driving module controls the infrared light emitting module to emit infrared light
  • the photosensitive element receives infrared light reflected by an object and converts into an electrical signal
  • the signal processing module processes the electrical signal To the digital signal.
  • the signal amplifying unit amplifies the electrical signal
  • the data processing unit processes the amplified electrical signal into a digital signal.
  • the filtering unit filters the amplified electrical signal, and the data processing unit processes the filtered electrical signal into a digital signal.
  • the illumination driving module controls the infrared light emitting module to emit infrared light, and the infrared light emitting module emits infrared light, and the infrared light is uniformly transmitted after being transmitted through the light homogenizing plate, and the display control module controls the
  • the display module transmits the uniformly emitted infrared light, and the uniformly emitted infrared light also passes through the transparent region of the image sensor and the filter, and the filter performs an optical signal reflected by the object. Filtering to obtain reflected infrared light, the image sensor receives the reflected infrared light and converts it into an electrical signal, and the signal processing module processes the electrical signal into a digital signal;
  • the light-emitting driving module controls the visible light emitting module to emit light, the visible light emitting module emits visible light, and the display control module controls the display module to display, the visible light transmits light through the image sensor The area and the filter are emitted.
  • the embodiment of the present invention provides an image sensing unit including a photosensitive element, a light transmitting area, and an opaque area, so that the light transmitting area transmits visible light and infrared light, so that the photosensitive element can receive the object reflection.
  • the infrared light is converted into an electrical signal, so that the image sensing unit has a visible light transmission function and an infrared light collection function, so that the image sensing unit can be well compatible with the display screen, and the creature can be collected after the screen is turned off.
  • FIG. 1 is a schematic structural diagram of an image sensing unit according to Embodiment 1 of the present application.
  • FIG. 2 is a schematic structural diagram of an image sensor according to Embodiment 2 of the present embodiment.
  • FIG. 3 is a schematic structural diagram of an image sensor according to Embodiment 3 of the present embodiment.
  • Embodiment 4 is a schematic structural diagram of an image sensor according to Embodiment 4 of the present embodiment.
  • FIG. 5 is a schematic structural diagram of a display device according to Embodiment 5 of the present embodiment.
  • FIG. 6 is a schematic structural diagram of a display device provided in Embodiment 6 of the present solution.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the photosensitive member may specifically include any type of photoelectric conversion device, and may further include a peripheral circuit connected to the photoelectric conversion device.
  • the light-transmitting region specifically refers to a transparent region that is at least transparent to visible light and infrared light, and may be made of a transparent glass substrate, a plastic substrate, or any feasible light-transmitting material.
  • the light transmissive region may also pass through other invisible light, such as ultraviolet light.
  • the image sensing unit can be applied to an image sensor as a photosensitive pixel unit in the image sensor.
  • the image sensor composed of the photosensitive pixel unit can be applied to a terminal including a display screen such as a mobile phone, a tablet computer, a notebook computer, a personal digital assistant, etc., and can be well compatible with the display screen of the terminal, so that the display screen Biometric image capture is available regardless of whether it is bright or off.
  • OLED Organic Electroluminescence Display
  • QLED Quadantum Dot Light Emitting Diodes
  • Embodiment 2 is a diagrammatic representation of Embodiment 1
  • an embodiment of the present disclosure provides an image sensor 200 including a transparent substrate 210 and a plurality of image sensing units 100.
  • the plurality of image sensing units 100 are arranged in an array.
  • the substrate 210 can transmit at least visible light and infrared light.
  • the substrate may be a glass substrate, a plastic substrate or a transparent substrate made of other materials.
  • the substrate is a glass substrate or a plastic-based flexible substrate.
  • a plurality of image sensing units can be arranged in an array of any shape on the surface of the substrate.
  • any shape for example, circular arrays, rectangular arrays, regular hexagonal arrays, and the like.
  • the image sensor 200 is exemplarily shown to include a 4x4 array of image sensing units.
  • the number of image sensing units included in the image sensor can be set according to actual needs.
  • the photosensitive element 10 is electrically connected to the external signal processing module 300, and the infrared light emitting module 400 is electrically connected to the external light emitting driving module 410.
  • the infrared light emitting module may specifically include an infrared diode, an infrared LED lamp, an infrared cold cathode fluorescent lamp or an infrared LED lamp array, and may also include other peripheral circuits.
  • FIG. 3 exemplarily shows that the infrared light emitting module 400 is an infrared diode, and the photosensitive element 10 is a photodiode.
  • the signal processing module may be a single chip microcomputer, a control chip, a central processing unit (Centra 1 Processing Unit, CPU), or other general purpose processor, a digital signal processor (DSP), ASIC (Application Specific Integrated
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the illumination driving module is configured to control the infrared light emitting module to emit infrared light
  • the photosensitive element is configured to receive infrared light reflected by the object and convert it into an electrical signal
  • the signal processing module is configured to process the electrical signal. Digital signal.
  • the illumination driving module may be a dimmer, a switching device, or a pulse frequency control signal may be output to control a pulse frequency modulator or a chip that emits periodic pulsed infrared light by the infrared light emitting module. It can also be a logic circuit with corresponding functions.
  • the image sensor 200 further includes a plurality of electronic switching units 220 equal in number to the plurality of image sensing units 100.
  • Each photosensitive element 10 is electrically connected to an electronic switching unit 220, and the electronic switching unit 220 is connected between the photosensitive element 10 and the signal processing module 300.
  • Only one electronic switching unit 220 and one photosensitive unit 10 are exemplarily shown in FIG.
  • the electronic switching unit is configured to access the control signal, and control the corresponding photosensitive element and the signal processing module to be electrically connected or disconnected according to the control signal, and the photosensitive element is connected to the signal processing module,
  • the signal processing module processes the electrical signal output by the photosensitive element to obtain a digital signal, and the signal transmitting module does not emit light when the connection is broken.
  • the electronic switching unit may specifically include at least one electronic type of any type, such as a triode, a field effect transistor, and the like, and may include other peripheral circuits.
  • the filter is an infrared trichromatic filter that transmits infrared, red, green, and blue light. It is prepared by a special coating process, which can transmit infrared light, red light, green light and blue light, so that the display module can display three primary color images as well as images of light, such as fingerprints, veins and irises.
  • the backlight module 500, the display control module 700, the display module 600, and the filter 800 are sequentially stacked, and the image sensor 200 is disposed on the filter 800 and the display module 600.
  • the image sensor is a large area image sensor whose area is comparable to the area of the display module.
  • the area of the image sensor is less than or equal to the area of the display module.
  • the area of the image sensor in this embodiment is equal to the area of the display module.
  • the display control module 700 and the display module 600 are electrically connected, the signal processing module 300 is electrically connected to the image sensor 200, and the light-emitting driving module and the visible light emitting module and the infrared light emitting module 400 are connected. Electrically connected, the filter 800 transmits light infrared light and visible light.
  • the filter is used to filter the light signal reflected by the object, and the object is reflected back to transmit the infrared light to the image sensor.
  • the function of the filter is to reflect or absorb the light signal that is not needed by the image sensor, and the infrared light required by the image sensor is not used for image acquisition of the infrared image.
  • the filter can transmit visible light. Specifically, a filter having a light transmission band and a wavelength range equivalent to or close to the infrared light may be selected.
  • the filter is an infrared trichromatic filter that transmits infrared, red, green, and blue light. It is prepared by a special coating process, which can transmit infrared light, red light, green light and blue light, so that the display module can display three primary color images as well as optical biological images such as fingerprints, veins and irises.
  • the display module is a TFT-LCD (Thin Film Transistor-Liquid Crystal Display).
  • the display control module is specifically a TFT (Thin Film Transistor) liquid crystal driving chip.
  • the display control module controls the display of the display module by adjusting the magnitude of the voltage applied to the display module and adjusting the optical axis orientation of the liquid crystal particles in the display module.
  • the visible light emitting module may specifically include an LED lamp, a cold cathode fluorescent lamp or an LED lamp array or other peripheral circuits.
  • the visible light emitting module and the infrared light emitting module may be disposed on a bottom surface or a side surface of the light homogenizing plate.
  • the display device 2000 further includes a transparent cover 00.
  • the transparent cover may specifically be a glass cover or a touch display panel.
  • the illumination driving module controls the infrared light emitting module to emit infrared light
  • the infrared light emitting module emits infrared light
  • the infrared light is uniformly transmitted after passing through the light homogenizing plate
  • the display control module controls the display module to transmit through
  • the uniformly emitted infrared light, the uniformly emitted infrared light also passes through the light transmitting area of the image sensor and the filter, and the filter filters the reflected light signal of the object to obtain reflected infrared light, and the image sensor receives the reflected infrared light and Converted into an electrical signal
  • the signal processing module processes the electrical signal into a digital signal
  • the illuminating driving module controls the visible light emitting module to emit light, and the visible light emitting module emits visible light.
  • the display control module controls the display module to display, and the visible light passes through the light transmitting area of the image sensor and the filter is emitted.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Electromagnetism (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Image Input (AREA)

Abstract

Une unité de détection d'image (100), un capteur d'image (200) et un dispositif d'affichage (1000), comprenant un élément photosensible (10), une région de transmission de lumière (20) et une région de non-transmission de lumière (30), l'élément photosensible (10) étant disposé dans la région de non transmission de lumière (30); la région de transmission de lumière (20) peut transmettre la lumière visible et la lumière infrarouge, l'élément photosensible (10) recevant une lumière infrarouge qui est réfléchie par un objet et convertissant la lumière infrarouge en un signal électrique; une unité de détection d'image (100) qui comprend l'élément photosensible (10), la région de transmission de lumière (20) et la région de non-transmission de lumière (30) permet à la région de transmission de lumière (20) de transmettre une lumière visible transmissible et une lumière infrarouge, et permet à l'élément photosensible (10) pour recevoir une lumière infrarouge qui est réfléchie par un objet et convertir la lumière infrarouge en un signal électrique de telle sorte que l'unité de détection d'image (100) a les fonctions de transmission de lumière visible et d'acquisition de lumière infrarouge, ce qui permet d'obtenir une bonne compatibilité entre l'unité de détection d'image (100) et un écran d'affichage, tandis que des images biométriques peuvent être acquises lorsque l'écran est éteint.
PCT/CN2017/106011 2017-10-13 2017-10-13 Unité de détection d'image, capteur d'image et dispositif d'affichage WO2019071560A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/106011 WO2019071560A1 (fr) 2017-10-13 2017-10-13 Unité de détection d'image, capteur d'image et dispositif d'affichage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/106011 WO2019071560A1 (fr) 2017-10-13 2017-10-13 Unité de détection d'image, capteur d'image et dispositif d'affichage

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WO2019071560A1 true WO2019071560A1 (fr) 2019-04-18

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114764988A (zh) * 2021-01-11 2022-07-19 群创光电股份有限公司 背光模块及其适用的显示装置

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US9001507B2 (en) * 2012-01-17 2015-04-07 Lg Electronics Inc. Mobile terminal
CN106385475A (zh) * 2016-12-06 2017-02-08 广东欧珀移动通信有限公司 一种传感器组件、盖板组件以及终端
CN106598444A (zh) * 2016-12-06 2017-04-26 广东欧珀移动通信有限公司 移动终端的控制方法及移动终端
US20170184764A1 (en) * 2015-12-28 2017-06-29 Apple Inc. Electronic Devices Having Infrared-Transparent Window Coatings
CN206339903U (zh) * 2016-12-06 2017-07-18 广东欧珀移动通信有限公司 一种面板、传感器组件及移动终端
CN107135290A (zh) * 2017-05-17 2017-09-05 广东欧珀移动通信有限公司 一种传感器组件、盖板组件、显示器组件以及终端
CN207282497U (zh) * 2017-10-13 2018-04-27 深圳芯启航科技有限公司 一种图像传感单元、图像传感器及显示装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9001507B2 (en) * 2012-01-17 2015-04-07 Lg Electronics Inc. Mobile terminal
US20170184764A1 (en) * 2015-12-28 2017-06-29 Apple Inc. Electronic Devices Having Infrared-Transparent Window Coatings
CN106385475A (zh) * 2016-12-06 2017-02-08 广东欧珀移动通信有限公司 一种传感器组件、盖板组件以及终端
CN106598444A (zh) * 2016-12-06 2017-04-26 广东欧珀移动通信有限公司 移动终端的控制方法及移动终端
CN206339903U (zh) * 2016-12-06 2017-07-18 广东欧珀移动通信有限公司 一种面板、传感器组件及移动终端
CN107135290A (zh) * 2017-05-17 2017-09-05 广东欧珀移动通信有限公司 一种传感器组件、盖板组件、显示器组件以及终端
CN207282497U (zh) * 2017-10-13 2018-04-27 深圳芯启航科技有限公司 一种图像传感单元、图像传感器及显示装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114764988A (zh) * 2021-01-11 2022-07-19 群创光电股份有限公司 背光模块及其适用的显示装置

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