WO2021168955A1 - 显示面板及其控制方法 - Google Patents

显示面板及其控制方法 Download PDF

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Publication number
WO2021168955A1
WO2021168955A1 PCT/CN2020/080931 CN2020080931W WO2021168955A1 WO 2021168955 A1 WO2021168955 A1 WO 2021168955A1 CN 2020080931 W CN2020080931 W CN 2020080931W WO 2021168955 A1 WO2021168955 A1 WO 2021168955A1
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Prior art keywords
light
module
display panel
display
information
Prior art date
Application number
PCT/CN2020/080931
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English (en)
French (fr)
Inventor
石腾腾
Original Assignee
武汉华星光电技术有限公司
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Application filed by 武汉华星光电技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US16/756,140 priority Critical patent/US11403999B2/en
Publication of WO2021168955A1 publication Critical patent/WO2021168955A1/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
    • 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
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/02—Details
    • G01J1/0228—Control of working procedures; Failure detection; Spectral bandwidth calculation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4204—Photometry, e.g. photographic exposure meter using electric radiation detectors with determination of ambient light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/10—Image acquisition
    • G06V10/12—Details of acquisition arrangements; Constructional details thereof
    • G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
    • G06V10/145—Illumination specially adapted for pattern recognition, e.g. using gratings
    • 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
    • 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
    • G06V40/1382—Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger
    • 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
    • H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
    • 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
    • H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
    • H10K59/65—OLEDs integrated with inorganic image sensors
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall 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
    • G09G2354/00—Aspects of interface with display user
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/144—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light
    • 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
    • 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

Definitions

  • the present invention relates to the field of displays, in particular to a display panel and a control method thereof.
  • the present invention provides a display panel and a control method thereof to solve the problems of increased production cost and decreased integration of electronic components in the prior art.
  • the main purpose of the present invention is to provide a display panel and a control method thereof, which convert light into electrical signals through a TFT photosensitive sensor, and convert the electrical signals into fingerprint information, proximity sensing information, and At least one of the environmental light monitoring information, so as to reduce the production cost and improve the integration of electronic components.
  • an embodiment of the present invention provides a display panel, wherein the display panel includes: a display module, a photosensitive module, and an application module.
  • the photosensitive module is arranged on a surface of the display module, and the photosensitive module includes a plurality of light path units, a TFT photosensitive sensor and a driving chip arranged at intervals.
  • the TFT photosensitive sensor is arranged on the plurality of light path units, wherein the TFT photosensitive sensor receives a light passing through between the plurality of light path units and converts it into an electrical signal, wherein the light includes an ambient light and an electric signal. At least one of the reflected light.
  • the driving chip is electrically connected to the TFT photosensitive sensor, wherein the driving chip converts the electric signal into at least one of fingerprint information, proximity sensing information, and ambient light monitoring information.
  • the application module is electrically connected to the display module and the photosensitive module, wherein the application module provides the display module to the display module according to at least one of the fingerprint information, the proximity sensing information, and the ambient light monitoring information An action signal to control the action of the display module.
  • the display module is a self-luminous panel, and the reflected light is formed after an incident light is emitted from the self-luminous panel and reflected.
  • the display panel further includes a backlight module arranged on the TFT photosensitive sensor, wherein the reflected light is formed by the incident light emitted from the backlight module and reflected.
  • an embodiment of the present invention provides a display panel, wherein the display panel includes: a display module, a photosensitive module, and an application module.
  • the photosensitive module is arranged on a surface of the display module, and the photosensitive module includes an optical path unit, a TFT photosensitive sensor and a driving chip.
  • the TFT photosensitive sensor is arranged on the optical path unit, wherein the TFT photosensitive sensor receives a light and converts it into an electric signal, wherein the light includes at least one of an ambient light and a reflected light.
  • the driving chip is electrically connected to the TFT photosensitive sensor, wherein the driving chip converts the electric signal into at least one of fingerprint information, proximity sensing information, and ambient light monitoring information.
  • the application module is electrically connected to the display module and the photosensitive module, wherein the application module provides the display module to the display module according to at least one of the fingerprint information, the proximity sensing information, and the ambient light monitoring information An action signal to control the action of the display module.
  • the display module is a self-luminous panel, and the reflected light is formed after an incident light is emitted from the self-luminous panel and reflected.
  • the display panel further includes a backlight module arranged on the TFT photosensitive sensor, wherein the reflected light is formed by the incident light emitted from the backlight module and reflected.
  • the control method of the display panel includes the steps of: providing a display panel, wherein the display panel includes a display module, a photosensitive module, and an application module
  • the application module is electrically connected to the display module and the photosensitive module; a light is received by a TFT photosensitive sensor of the photosensitive module and converted into an electrical signal, wherein the light includes an ambient light and a reflected light At least one of; converting the electrical signal into at least one of fingerprint information, proximity sensing information, and ambient light monitoring information through a drive chip of the photosensitive module; and the application module according to the fingerprint information, At least one of the proximity sensing information and the ambient light monitoring information provides an action signal to the display module to control the action of the display module.
  • the display module is a self-luminous panel, and the reflected light is formed after an incident light is emitted from the self-luminous panel and reflected.
  • the display panel further includes a backlight module arranged on the TFT photosensitive sensor, wherein the reflected light is formed by the incident light emitted from the backlight module and reflected.
  • the light includes at least one fingerprint valley reflected light and at least one fingerprint ridge reflected light
  • the driving chip converts the electrical signal into the fingerprint information
  • the light includes the ambient light and the reflected light
  • the driving chip converts the electrical signal into the proximity sensing information
  • the light includes the ambient light
  • the driving chip converts the electrical signal into the ambient light monitoring information.
  • the driving chip analyzes the light in a time-sharing manner.
  • the display panel and its control method of the present invention convert light into electrical signals through a TFT photosensitive sensor, and convert the electrical signals into fingerprint information, proximity sensing information, and At least one of the environmental light monitoring information, so as to reduce the production cost and improve the integration of electronic components.
  • FIG. 1A is a schematic cross-sectional view of a display panel according to an embodiment of the invention.
  • FIG. 1B is a schematic cross-sectional view of a display panel according to another embodiment of the invention.
  • FIG. 1C is a schematic cross-sectional view of a display panel according to another embodiment of the present invention.
  • FIG. 2 is a flowchart of a control method of a display panel according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of analyzing light by a driving chip of a display panel according to an embodiment of the present invention
  • 4A is a schematic diagram of fingerprint recognition of a display panel according to an embodiment of the present invention.
  • 4B is a schematic diagram of fingerprint recognition of a display panel according to another embodiment of the present invention.
  • 5A is a schematic diagram of obstacle recognition of a display panel according to an embodiment of the present invention.
  • 5B is a schematic diagram of obstacle recognition of a display panel according to another embodiment of the present invention.
  • 6A is a schematic diagram of ambient light recognition of a display panel according to an embodiment of the invention.
  • 6B is a schematic diagram of ambient light recognition of a display panel according to another embodiment of the invention.
  • FIG. 1A is a schematic cross-sectional view of a display panel 10 according to an embodiment of the present invention
  • FIG. 1B is a schematic cross-sectional view of a display panel 10 according to another embodiment of the present invention
  • FIG. 1C is another embodiment of the present invention
  • the display panel 10 of an embodiment of the present invention mainly includes a display module 11, a photosensitive module 12 and an application module 13.
  • the display module 11 can be used as a display screen for displaying images or images.
  • the photosensitive module 12 of the display panel 10 is provided on a surface 11A of the display module 11.
  • the photosensitive module 12 includes: an optical path unit 121, a TFT photosensitive sensor 122 and a driving chip 123.
  • the light path unit 121 is arranged on the surface 11A of the display module 11, and it mainly has the functions of concentrating light and removing noise.
  • the TFT photosensitive sensor 122 is disposed on the optical path unit 121, wherein the TFT photosensitive sensor 122 receives a light and converts it into an electrical signal, wherein the light includes at least one of an ambient light and a reflected light.
  • the driving chip 123 is electrically connected to the TFT photosensitive sensor 122 (for example, through a flexible printed circuit board 124), wherein the driving chip 123 converts the electrical signal into a fingerprint information, a proximity sensing information and an ambient light At least one of the monitoring information.
  • the driving chip 123 has a function of converting electrical signals into digital signals.
  • the driving chip 123 can compare the electrical signal with data in a database (not shown), and then determine that the electrical signal belongs to the fingerprint information, the proximity sensor information, and the information. At least one of the environmental light monitoring information.
  • the application module 13 of the display panel 10 is electrically connected to the display module 11 and the photosensitive module 12, wherein the application module 13 is based on the fingerprint information, the proximity sensing information, and the ambient light At least one of the monitoring information provides an action signal to the display module 11 to control the action of the display module 11. For example, the application module judges whether it matches a preset fingerprint information according to the fingerprint information, and then judges whether to unlock, and provides a corresponding counter-operation signal to the display module 11.
  • the application module 13 can perform any function related to fingerprint operations according to the fingerprint information. For example, creating the preset fingerprint information to the database, etc.
  • the application module 13 provides an action signal according to the proximity sensing information to control whether to turn on or turn off the display function of the display module.
  • the application module 13 can obtain a proximity sensing information (because the phone is close to the human ear), and it is turned off when it is close. The display function of the display module.
  • the application module 13 provides an action signal according to the ambient light monitoring information to adjust the display brightness of the display module 11. Specifically, for example, when the brightness of the ambient light is greater than a preset brightness in the database, the application module 13 provides an action signal to reduce the brightness to the display module 11, so as to adjust the display brightness of the display module 11 (For example, reduce the display brightness).
  • the display panel 10 of the embodiment of the present invention mainly converts light into electrical signals through a TFT photosensitive sensor, and converts the electrical signals into fingerprint information, proximity sensing information, and environmental information through a drive chip. At least one of the information is monitored optically to reduce the production cost and improve the integration of electronic components.
  • the display module 11 is a self-luminous panel, wherein the reflected light is formed by emitting incident light from the self-luminous panel and being reflected.
  • the display panel is, for example, an organic light emitting diode (OLED) panel, and the display panel 10, for example, further includes a cover plate 15 as an outer protective effect of the display panel.
  • OLED organic light emitting diode
  • the display panel 10 further includes a backlight module 14 arranged on the TFT photosensitive sensor 122, wherein the reflected light is formed by an incident light emitted from the backlight module 14 and reflected.
  • the display panel 10 is, for example, a liquid crystal panel, and the liquid crystal panel, for example, further includes a cover 15 and a color filter 16.
  • the display module 11 of the liquid crystal panel may be a liquid crystal layer disposed between the light path unit 121 and the TFT photosensitive sensor 122 (as shown in FIG. 1B).
  • the liquid crystal layer 15 of the liquid crystal panel may be provided on the TFT photosensitive sensor 122 (as shown in FIG. 1C).
  • the liquid crystal panel may further include an array substrate 17 provided between the backlight module 14 and the TFT photosensitive sensor 122.
  • the control method 20 of the display panel of the embodiment of the present invention includes steps 21 to 24: providing a display panel, wherein the display panel includes a display module, a photosensitive module, and an application module.
  • the display module and the photosensitive module are connected sexually (step 21); a light is received by a TFT photosensitive sensor of the photosensitive module and converted into an electrical signal, wherein the light includes at least one of an ambient light and a reflected light One (step 22); converting the electrical signal into at least one of fingerprint information, proximity sensing information, and ambient light monitoring information through a drive chip of the photosensitive module (step 23); and the application module According to at least one of the fingerprint information, the proximity sensing information, and the ambient light monitoring information, an action signal is provided to the display module to control the action of the display module (step 24).
  • step 21 the display panel 10 according to the embodiment of the present invention is provided.
  • the display module is a self-luminous panel, wherein the reflected light is formed by emitting incident light from the self-luminous panel and being reflected.
  • the display panel further includes a backlight module arranged on the TFT photosensitive sensor, wherein the reflected light is formed by the incident light emitted from the backlight module and reflected.
  • the driving chip analyzes the light in a time-sharing manner. For example, referring to FIG. 3, the electrical information S1 of the reflected light (voltage value V2) is analyzed in the period T1, and the electrical information S2 of the ambient light (voltage value V1) is analyzed in the period T2.
  • the display panel is, for example, an OLED panel.
  • the display module 11 emits at least one incident light 111 to the finger, and forms at least one fingerprint valley reflected light 111A and at least one fingerprint ridge reflected light 111B after being reflected by the finger 90.
  • the at least one fingerprint valley reflected light 111A and the at least one fingerprint ridge reflected light 111B are received by the TFT photosensitive sensor 112 and converted into an electrical signal. After that, the electrical signal is converted into fingerprint information by a driving chip (not shown in FIG. 4A) of the photosensitive module 12.
  • the light intensity of the fingerprint ridge reflected light 111B is inconsistent with the optical path of the fingerprint valley reflected light 111A, one is similar to total reflection, and the other is refracted multiple times.
  • the reflected light reaches the TFT photosensitive sensor 112 with different light intensity.
  • the current generated by the TFT photosensitive sensor 112 will have a difference.
  • the current or voltage difference read by the driving chip that is, the difference between the ridge and the valley, can identify the ridge and the valley of the fingerprint. Valley.
  • the display panel is, for example, a liquid crystal panel (as shown in FIG. 4B)
  • the at least one fingerprint valley reflected light 111A and the at least one fingerprint ridge reflected light 111B pass through the self-backlight
  • the module 14 emits an incident light and is formed after being reflected by the finger 90.
  • the display panel is, for example, an OLED panel.
  • the display module 11 emits at least one incident light 111 to an obstacle 91 and is reflected by the obstacle 91 to form a reflected light 111C. After that, the reflected light 111C and an ambient light 92 are received by the TFT photosensitive sensor 112 and converted into an electrical signal. The electrical signal is converted into proximity sensing information by a driving chip (not shown in FIG. 5A) of the photosensitive module.
  • the light intensity detected by the TFT photosensitive sensor 112 is composed of the reflected light 111C of the obstacle 91 and the ambient light 92, but the light intensity of the reflected light 111C is much smaller than the ambient light 92, and the ambient light 92 in the obstacle area will be greatly affected. Ambient light 92 smaller than an obstacle-free area. It is judged whether there is an obstacle 91 by comparison, and the function of turning off the screen when answering is realized.
  • the display panel is, for example, a liquid crystal panel (as shown in FIG. 5B)
  • the reflected light is formed by the incident light emitted from the backlight module and reflected by obstacles.
  • the display panel is, for example, an OLED panel, and an ambient light 92 is received by the TFT photosensitive sensor 112 and converted into an electrical signal.
  • the electrical signal is converted into ambient light monitoring information through a driving chip (not shown in FIG. 6A) of the photosensitive module.
  • TFT photosensitive sensor has a characteristic, the magnitude of the current value generated is proportional to the logarithm of the intensity of the received light.
  • the driver chip can calculate the ambient light where the TFT photosensitive sensor is located according to the characteristic curve used for calibration when the TFT photosensitive sensor is initialized, and then the driver chip calculates all the TFT photosensitive sensors 112 on the entire surface by averaging calculations. The average value of the received light intensity. After that, the brightness of the screen is adjusted according to the light intensity corresponding to this average value to realize the ambient light monitoring function.
  • the display panel is, for example, a liquid crystal panel, refer to FIG. 6B.
  • control method of the display panel of the embodiment of the present invention mainly converts light into electric signals through a TFT photosensitive sensor, and converts the electric signals into fingerprint information, proximity sensing information, and At least one of the environmental light monitoring information, so as to reduce the production cost and improve the integration of electronic components.
  • the number of the light path units 121 may be multiple, and the multiple light path units 121 are arranged at intervals so that light can enter the TFT from between the multiple light path units 121.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Sustainable Development (AREA)
  • Multimedia (AREA)
  • Nonlinear Science (AREA)
  • Human Computer Interaction (AREA)
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Abstract

公开一种显示面板及其控制方法。所述方法包含步骤：提供一显示面板；通过TFT感光传感器接收光线并且转换成一电信号，其中所述光线包括环境光及反射光中的至少一个；通过驱动芯片把所述电信号转换为指纹信息、近接感应信息及环境光监测信息中的至少一个；及根据所述指纹信息、所述近接感应信息及所述环境光监测信息中的至少一个对显示模块提供动作信号，以控制所述显示模块的动作。本申请使用同一传感器实现光学式指纹，环境光监测与接近感应功能的方法。

Description

显示面板及其控制方法
本申请要求于2020年02月26日提交中国专利局、申请号为202010120881.6、发明名称为“显示面板及其控制方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明是有关于显示器领域，特别是有关于一种显示面板及其控制方法。
 背景技术
消费电子设备，例如手机和平板电脑等，正在使用越来越多的传感器来增强对各种环境参数的感知能力。指纹传感器、环境光传感器和距离传感器已经得到了广泛的应用。然而，这些传感器通常都是各自独立制作在电子产品内部，不仅增加制作成本，而且也降低了电子元件的集成度。
故，有必要提供一种显示面板及其控制方法，以解决现有技术所存在的问题。
 技术问题
有鉴于此，本发明提供一种显示面板及其控制方法，以解决现有技术所存在的制作成本增加、电子元件的集成度降低的问题。
 技术解决方案
本发明的主要目的在于提供一种显示面板及其控制方法，其通过一TFT感光传感器将光线转换为电信号，并且通过一驱动芯片将所述电信号转换为一指纹信息、一近接感应信息及一环境光监测信息中的至少一个，以使制作成本降低并且提高电子元件的集成度。
为达成本发明的前述目的，本发明一实施例提供一种显示面板，其中所述显示面板包含：一显示模块、一感光模块及一应用模块。所述感光模块设在所述显示模块的一表面上，所述感光模块包括间隔设置的多个光路单元、一TFT感光传感器及一驱动芯片。所述TFT感光传感器设在所述多个光路单元上，其中所述TFT感光传感器接收从多个光路单元之间穿过的一光线并且转换成一电信号，其中所述光线包括一环境光及一反射光中的至少一个。所述驱动芯片电性连接所述TFT感光传感器，其中所述驱动芯片把所述电信号转换为一指纹信息、一近接感应信息及一环境光监测信息中的至少一个。所述应用模块电性连接所述显示模块与所述感光模块，其中所述应用模块根据所述指纹信息、所述近接感应信息及所述环境光监测信息中的至少一个对所述显示模块提供一动作信号，以控制所述显示模块的动作。
在本发明的一实施例中，所述显示模块是一自发光面板，其中所述反射光是通过所述自发光面板发出一入射光并且经反射后形成。
在本发明的一实施例中，所述显示面板还包括一背光模块，设在所述TFT感光传感器上，其中所述反射光是通过所述自背光模块发出一入射光并且经反射后形成。
为达成本发明的前述目的，本发明一实施例提供一种显示面板，其中所述显示面板包含：一显示模块、一感光模块及一应用模块。所述感光模块设在所述显示模块的一表面上，所述感光模块包括一光路单元、一TFT感光传感器及一驱动芯片。所述TFT感光传感器设在所述光路单元上，其中所述TFT感光传感器接收一光线并且转换成一电信号，其中所述光线包括一环境光及一反射光中的至少一个。所述驱动芯片电性连接所述TFT感光传感器，其中所述驱动芯片把所述电信号转换为一指纹信息、一近接感应信息及一环境光监测信息中的至少一个。所述应用模块电性连接所述显示模块与所述感光模块，其中所述应用模块根据所述指纹信息、所述近接感应信息及所述环境光监测信息中的至少一个对所述显示模块提供一动作信号，以控制所述显示模块的动作。
在本发明的一实施例中，所述显示模块是一自发光面板，其中所述反射光是通过所述自发光面板发出一入射光并且经反射后形成。
在本发明的一实施例中，所述显示面板还包括一背光模块，设在所述TFT感光传感器上，其中所述反射光是通过所述自背光模块发出一入射光并且经反射后形成。
再者，本发明另一实施例提供一种显示面板的控制方法，所述显示面板的控制方法包含步骤：提供一显示面板，其中所述显示面板包括一显示模块、一感光模块与一应用模块，所述应用模块电性连接所述显示模块与所述感光模块；通过所述感光模块的一TFT感光传感器接收一光线并且转换成一电信号，其中所述光线包括一环境光及一反射光中的至少一个；通过所述感光模块的一驱动芯片把所述电信号转换为一指纹信息、一近接感应信息及一环境光监测信息中的至少一个；及所述应用模块根据所述指纹信息、所述近接感应信息及所述环境光监测信息中的至少一个对所述显示模块提供一动作信号，以控制所述显示模块的动作。
在本发明的一实施例中，所述显示模块是一自发光面板，其中所述反射光是通过所述自发光面板发出一入射光并且经反射后形成。
在本发明的一实施例中，所述显示面板还包括一背光模块，设在所述TFT感光传感器上，其中所述反射光是通过所述自背光模块发出一入射光并且经反射后形成。
在本发明的一实施例中，所述光线包括至少一指纹谷反射光与至少一指纹嵴反射光，其中所述驱动芯片把所述电信号转换为所述指纹信息。
在本发明的一实施例中，所述光线包括所述环境光及所述反射光，其中所述驱动芯片把所述电信号转换为所述近接感应信息。
在本发明的一实施例中，所述光线包括所述环境光，其中所述驱动芯片把所述电信号转换为所述环境光监测信息。
在本发明的一实施例中，所述驱动芯片采用分时的方式分析所述光线。
 有益效果
与现有技术相比较，本发明的显示面板及其控制方法是通过一TFT感光传感器将光线转换为电信号，并且通过一驱动芯片将所述电信号转换为一指纹信息、一近接感应信息及一环境光监测信息中的至少一个，以使制作成本降低并且提高电子元件的集成度。
为让本发明的上述内容能更明显易懂，下文特举优选实施例，并配合所附图式，作详细说明如下：
 附图说明
图1A是本发明一实施例的显示面板的剖面示意图；
图1B是本发明另一实施例的显示面板的剖面示意图；
图1C是本发明又一实施例的显示面板的剖面示意图；
图2是本发明一实施例的显示面板的控制方法的流程图；
图3是本发明一实施例的显示面板的驱动芯片分析光线的示意图；
图4A是本发明一实施例的显示面板的指纹辨识的示意图；
图4B是本发明另一实施例的显示面板的指纹辨识的示意图；
图5A是本发明一实施例的显示面板的障碍物辨识的示意图；
图5B是本发明另一实施例的显示面板的障碍物辨识的示意图；
图6A是本发明一实施例的显示面板的环境光辨识的示意图；及
图6B是本发明另一实施例的显示面板的环境光辨识的示意图。
 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，用以例示本发明可用以实施的特定实施例。再者，本发明所提到的方向用语，例如上、下、顶、底、前、后、左、右、内、外、侧面、周围、中央、水平、横向、垂直、纵向、轴向、径向、最上层或最下层等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。
请参照图1A至1C，图1A是本发明一实施例的显示面板10的剖面示意图；图1B是本发明另一实施例的显示面板10的剖面示意图；及图1C是本发明又一实施例的显示面板10的剖面示意图，其中，为了简洁的目的，图1B与图1C未绘示应用模块与驱动芯片。本发明一实施例的显示面板10主要包含一显示模块11、一感光模块12及一应用模块13。所述显示模块11可作为一显示萤幕，用以显示图像或影像。
如图1A所示，本发明一实施例的显示面板10的感光模块12设在所述显示模块11的一表面11A上。所述感光模块12包括：一光路单元121、一TFT感光传感器122及一驱动芯片123。所述光路单元121设在所述显示模块11的所述表面11A上，其主要具有聚光和屏除杂讯的作用。所述TFT感光传感器122设在所述光路单元121上，其中所述TFT感光传感器122接收一光线并且转换成一电信号，其中所述光线包括一环境光及一反射光中的至少一个。所述驱动芯片123电性连接所述TFT感光传感器122(例如通过一柔性印刷电路板124)，其中所述驱动芯片123把所述电信号转换为一指纹信息、一近接感应信息及一环境光监测信息中的至少一个。在一实施例中，所述驱动芯片123具有将电信号转换为数字信号的功能。在一范例中，所述驱动芯片123可将所述电信号与一资料库(未绘示)的资料进行比对，进而判断所述电信号属于所述指纹信息、所述近接感应信息及所述环境光监测信息中的至少一种。
本发明一实施例的显示面板10的应用模块13电性连接所述显示模块11与所述感光模块12，其中所述应用模块13根据所述指纹信息、所述近接感应信息及所述环境光监测信息中的至少一个对所述显示模块11提供一动作信号，以控制所述显示模块11的动作。例如，所述应用模块根据所述指纹信息判断是否符合一预设指纹信息，进而判断是否进行解锁，并且提供对应的对作信号予显示模块11。在一实施例中，所述应用模块13可根据所述指纹信息进行任何有关于指纹操作的功能。例如，建立所述预设指纹信息至所述资料库中等。
在一实施例中，所述应用模块13根据所述近接感应信息提供一动作信号，以控制是否开启或关闭所述显示模块的显示功能。具体而言，例如在所述显示面板作为一智能电话的显示屏的情况下，在使用者接听电话时，所述应用模块13可获得一近接感应信息(因为电话靠近人耳)，近而关闭所述显示模块的显示功能。
在一实施例中，所述应用模块13根据所述环境光监测信息提供一动作信号，进而调整所述显示模块11的显示亮度。具体而言，例如在环境光的亮度大于资料库中的一预设亮度时，所述应用模块13提供降低亮度的动作信号予所述显示模块11，进而达成调整所述显示模块11的显示亮度(例如降低显示亮度)。
由上可知，本发明实施例的显示面板10，主要是通过一TFT感光传感器将光线转换为电信号，并且通过一驱动芯片将所述电信号转换为一指纹信息、一近接感应信息及一环境光监测信息中的至少一个，以使制作成本降低并且提高电子元件的集成度。
在一实施例中，所述显示模块11是一自发光面板，其中所述反射光是通过所述自发光面板发出一入射光并且经反射后形成。在本实施例中，所述显示面板例如是一有机发光二极管(OLED)面板，所述显示面板10例如还包括一盖板15，作为所述显示面板的外层保护效果。
在一实施例中，所述显示面板10还包括一背光模块14，设在所述TFT感光传感器122上，其中所述反射光是通过所述自背光模块14发出一入射光并且经反射后形成。在本实施例中，所述显示面板10例如是一液晶面板，所述液晶面板例如还包括一盖板15与一彩色滤光片16。在一范例中，所述液晶面板的显示模块11可以是一液晶层，所述液晶层设在所述光路单元121与所述TFT感光传感器122之间(如图1B所示)。在另一范例中，所述液晶面板的液晶层15可设在所述TFT感光传感器122上(如图1C所示)。在另一实施例中，所述液晶面板还可包括阵列基板17，所述阵列基板17设在所述背光模块14与所述TFT感光传感器122之间。
请参考图2，本发明实施例的显示面板的控制方法20包含步骤21至24：提供一显示面板，其中所述显示面板包括一显示模块、一感光模块与一应用模块，所述应用模块电性连接所述显示模块与所述感光模块(步骤21)；通过所述感光模块的一TFT感光传感器接收一光线并且转换成一电信号，其中所述光线包括一环境光及一反射光中的至少一个(步骤22)；通过所述感光模块的一驱动芯片把所述电信号转换为一指纹信息、一近接感应信息及一环境光监测信息中的至少一个(步骤23)；及所述应用模块根据所述指纹信息、所述近接感应信息及所述环境光监测信息中的至少一个对所述显示模块提供一动作信号，以控制所述显示模块的动作(步骤24)。
在一实施例中，在步骤21中，提供如本发明实施例的显示面板10。
在一实施例中，所述显示模块是一自发光面板，其中所述反射光是通过所述自发光面板发出一入射光并且经反射后形成。
在另一实施例中，所述显示面板还包括一背光模块，设在所述TFT感光传感器上，其中所述反射光是通过所述自背光模块发出一入射光并且经反射后形成。
在一实施例中，所述驱动芯片采用分时的方式分析所述光线。例如，请参照图3，在周期T1中分析反射光的电信息S1(电压值为V2)，在周期T2中分析环境光的电信息S2(电压值为V1)。
以下举出数个例子进行进一步说明。
请参照图4A，所述显示面板例如是一OLED面板。所述显示模块11发出至少一入射光111至手指，并且通过所述手指90反射后形成至少一指纹谷反射光111A与至少一指纹嵴反射光111B。所述至少一指纹谷反射光111A与所述至少一指纹嵴反射光111B被TFT感光传感器112接收并且转换成一电信号。之后，通过所述感光模块12的一驱动芯片(图4A未绘示)把所述电信号转换为一指纹信息。由于指纹嵴反射光111B的光线强度和指纹谷反射光111A的光线光学路径不一致，一个发生类似全反射，一个发生多次折射。反射光到达TFT感光传感器112的光线强度不一样，在TFT感光传感器112产生的电流会产生差异，通过驱动芯片读取的电流或者电压差异，也即嵴和谷的差异，从而识别指纹的嵴和谷。另一方面，在所述显示面板例如是一液晶面板的情况下(如图4B所示)，所述至少一指纹谷反射光111A与所述至少一指纹嵴反射光111B是通过所述自背光模块14发出一入射光并且经手指90反射后形成。
请参照图5A，所述显示面板例如是一OLED面板。所述显示模块11发出至少一入射光111至一障碍物91，并且通过所述障碍物91反射后形成一反射光111C。之后，所述反射光111C以及一环境光92被TFT感光传感器112接收并且转换成一电信号。通过所述感光模块的一驱动芯片(图5A未绘示)把所述电信号转换为一近接感应信息。此时TFT感光传感器112检测到的光线强度由障碍物91的反射光111C和环境光92构成，但反射光111C的光线强度远小于环境光92，且有障碍物区域的环境光92会大幅度小于无障碍物区域的环境光92。通过对比判断是否存在障碍物91，实现接听灭屏功能。另一方面，在所述显示面板例如是一液晶面板的情况下(如图5B所示)，是所述反射光是通过所述自背光模块发出一入射光并且经障碍物反射后形成。
请参照图6A，所述显示面板例如是一OLED面板，一环境光92被TFT感光传感器112接收并且转换成一电信号。通过所述感光模块的一驱动芯片(图6A未绘示)把所述电信号转换为一环境光监测信息。TFT感光传感器具有一个特性，产生电流值的大小与所受光线强度的大小的对数成正比。在一范例中，所述驱动芯片可以根据TFT感光传感器初始化时校准用的特性曲线，计算出TFT感光传感器所处的环境光，然后所述驱动芯片通过平均计算，算出整面所有TFT感光传感器112所接收到的光线强度的均值。之后，根据这个均值对应的光照强度来调节屏幕的亮度，实现环境光监测功能。另一方面，在所述显示面板例如是一液晶面板的情况下，可参考如图6B所示。
由上可知，本发明实施例的显示面板的控制方法，主要是通过一TFT感光传感器将光线转换为电信号，并且通过一驱动芯片将所述电信号转换为一指纹信息、一近接感应信息及一环境光监测信息中的至少一个，以使制作成本降低并且提高电子元件的集成度。
另外值得一提的是，在一实施例中，所述光路单元121的数量可以是多个，其中多个光路单元121是间隔设置，以使光线可从多个光路单元121之间射入TFT感光传感器112中。在另一实施例中，TFT感光传感器112可以是多个，例如光路单元121与TFT感光传感器112的数量相同，光路单元121与TFT感光传感器112可以是一一对应方式设置。
本发明已由上述相关实施例加以描述，然而上述实施例仅为实施本发明的范例。必需指出的是，已公开的实施例并未限制本发明的范围。相反地，包含于权利要求书的精神及范围的修改及均等设置均包括于本发明的范围内。

Claims (13)

  1. 一种显示面板，其包含：
    一显示模块；
    一感光模块，设在所述显示模块的一表面上，所述感光模块包括：
    间隔设置的多个光路单元；
    一TFT感光传感器，设在所述多个光路单元上，其中所述TFT感光传感器接收从多个光路单元之间穿过的一光线并且转换成一电信号，其中所述光线包括一环境光及一反射光中的至少一个；及
    一驱动芯片，电性连接所述TFT感光传感器，其中所述驱动芯片把所述电信号转换为一指纹信息、一近接感应信息及一环境光监测信息中的至少一个；
    一应用模块，电性连接所述显示模块与所述感光模块，其中所述应用模块根据所述指纹信息、所述近接感应信息及所述环境光监测信息中的至少一个对所述显示模块提供一动作信号，以控制所述显示模块的动作。
  2. 如权利要求1所述的显示面板，其中所述显示模块是一自发光面板，其中所述反射光是通过所述自发光面板发出一入射光并且经反射后形成。
  3. 如权利要求1所述的显示面板，其中所述显示面板还包括一背光模块，设在所述TFT感光传感器上，其中所述反射光是通过所述自背光模块发出一入射光并且经反射后形成。
  4. 一种显示面板，其包含：
    一显示模块；
    一感光模块，设在所述显示模块的一表面上，所述感光模块包括：
    一光路单元；
    一TFT感光传感器，设在所述光路单元上，其中所述TFT感光传感器接收一光线并且转换成一电信号，其中所述光线包括一环境光及一反射光中的至少一个；及
    一驱动芯片，电性连接所述TFT感光传感器，其中所述驱动芯片把所述电信号转换为一指纹信息、一近接感应信息及一环境光监测信息中的至少一个；
    一应用模块，电性连接所述显示模块与所述感光模块，其中所述应用模块根据所述指纹信息、所述近接感应信息及所述环境光监测信息中的至少一个对所述显示模块提供一动作信号，以控制所述显示模块的动作。
  5. 如权利要求4所述的显示面板，其中所述显示模块是一自发光面板，其中所述反射光是通过所述自发光面板发出一入射光并且经反射后形成。
  6. 如权利要求4所述的显示面板，其中所述显示面板还包括一背光模块，设在所述TFT感光传感器上，其中所述反射光是通过所述自背光模块发出一入射光并且经反射后形成。
  7. 一种显示面板的控制方法，其包含步骤：
    提供一显示面板，其中所述显示面板包括一显示模块、一感光模块与一应用模块，所述应用模块电性连接所述显示模块与所述感光模块；
    通过所述感光模块的一TFT感光传感器接收一光线并且转换成一电信号，其中所述光线包括一环境光及一反射光中的至少一个；
    通过所述感光模块的一驱动芯片把所述电信号转换为一指纹信息、一近接感应信息及一环境光监测信息中的至少一个；及
    所述应用模块根据所述指纹信息、所述近接感应信息及所述环境光监测信息中的至少一个对所述显示模块提供一动作信号，以控制所述显示模块的动作。
  8. 如权利要求7所述的显示面板的控制方法，其中所述显示模块是一自发光面板，其中所述反射光是通过所述自发光面板发出一入射光并且经反射后形成。
  9. 如权利要求7所述的显示面板的控制方法，其中所述显示面板还包括一背光模块，设在所述TFT感光传感器上，其中所述反射光是通过所述自背光模块发出一入射光并且经反射后形成。
  10. 如权利要求7所述的显示面板的控制方法，其中所述光线包括至少一指纹谷反射光与至少一指纹嵴反射光，其中所述驱动芯片把所述电信号转换为所述指纹信息。
  11. 如权利要求7所述的显示面板的控制方法，其中所述光线包括所述环境光及所述反射光，其中所述驱动芯片把所述电信号转换为所述近接感应信息。
  12. 如权利要求7所述的显示面板的控制方法，其中所述光线包括所述环境光，其中所述驱动芯片把所述电信号转换为所述环境光监测信息。
  13. 如权利要求7所述的显示面板的控制方法，其中所述驱动芯片采用分时的方式分析所述光线。
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