WO2019041884A1 - 显示模组及其显示方法、终端 - Google Patents

显示模组及其显示方法、终端 Download PDF

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Publication number
WO2019041884A1
WO2019041884A1 PCT/CN2018/086438 CN2018086438W WO2019041884A1 WO 2019041884 A1 WO2019041884 A1 WO 2019041884A1 CN 2018086438 W CN2018086438 W CN 2018086438W WO 2019041884 A1 WO2019041884 A1 WO 2019041884A1
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WO
WIPO (PCT)
Prior art keywords
display
target area
display panel
fingerprint
target image
Prior art date
Application number
PCT/CN2018/086438
Other languages
English (en)
French (fr)
Inventor
刘练彬
兰传艳
申丽霞
喻勇
Original Assignee
京东方科技集团股份有限公司
成都京东方光电科技有限公司
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
Priority to US16/305,174 priority Critical patent/US11386718B2/en
Application filed by 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Publication of WO2019041884A1 publication Critical patent/WO2019041884A1/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
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/34—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators for rolling or scrolling
    • 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
    • G06V40/60—Static or dynamic means for assisting the user to position a body part for biometric acquisition
    • G06V40/67—Static or dynamic means for assisting the user to position a body part for biometric acquisition by interactive indications to the user
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
    • 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
    • G09G3/22—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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/10—Intensity circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725—Cordless telephones
    • 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
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving
    • G09G2330/022—Power management, e.g. power saving in absence of operation, e.g. no data being entered during a predetermined time
    • 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
    • G09G2358/00—Arrangements for display data security

Definitions

  • the present application relates to the field of display technologies, and in particular, to a display module, a display method thereof, and a terminal.
  • the Home button primary key that can be used for fingerprint collection is cancelled. Therefore, if the fingerprint collection function needs to be implemented on the side of the display surface of the terminal, the fingerprint collection area can only be set in the display area of the terminal.
  • the display module in the terminal generally includes a self-illuminating display panel, a glass cover on the side of the display surface of the display panel, and a protective film layer on the side of the non-display surface of the display panel.
  • a pressure sensor in the fingerprint collection area on the glass cover plate, and the drive integrated circuit of the pressure sensor and the display panel (English: integrated circuit; referred to as IC) Connected and formed an opening in the protective film layer, and an optical fingerprint sensor is disposed in the opening.
  • IC integrated circuit
  • the pressure sensor in the fingerprint collection area on the glass cover can receive the pressure touch operation, and then the drive IC of the display panel can illuminate the area covered by the orthographic projection of the fingerprint collection area on the display panel.
  • the pixels, the light emitted by the pixels of the area can be reflected into the optical fingerprint sensor via the fingerprint valley and the fingerprint ridge of the fingerprint, and then processed by the processing sub-circuit connected to the optical fingerprint sensor in the terminal for subsequent processing such as fingerprint pairing analysis.
  • the embodiment of the present application provides a display module, a display method thereof, and a terminal.
  • the technical solution is as follows:
  • a display module including:
  • the control circuit is configured to control a target area on the display panel to display a target image when the display panel is in an off-screen state, and the target area includes a fingerprint collection area.
  • control circuit includes a processing sub-circuit and an integrated circuit IC.
  • the processing sub-circuit is configured to generate a control signal according to the target image, and send the control signal to the IC;
  • the IC is configured to illuminate pixels in the target area according to the control signal to display the target image.
  • the target image is a water ripple pattern
  • the ripples in the water ripple pattern can be scrolled according to a rule.
  • each pixel that is illuminated in the target area displays the same time and brightness.
  • the ripple in the water ripple pattern is a fingerprint.
  • the target image includes a plurality of sequentially arranged pictures, and the plurality of sequentially arranged pictures are cyclically displayed on the target area.
  • a second aspect provides a display module display method, where the display module includes a display panel and a control circuit, and the method includes:
  • the control circuit controls the target area on the display panel to display a target image when receiving the blackout instruction, the target area includes a fingerprint collection area, and the blackout instruction instructs the display panel to enter a blackout state.
  • control circuit includes a processing sub-circuit and an integrated circuit IC, and the control circuit controls a target area on the display panel to display a target image, including:
  • the processing sub-circuit generates a control signal according to the target image, and sends the control signal to the IC;
  • the IC illuminates pixels in the target area according to the control signal to display the target image.
  • the target image is a water ripple pattern.
  • the IC illuminates pixels in the target area according to the control signal, including:
  • the IC periodically illuminates n columns of designated pixels in the target area according to the first brightness value according to the control signal, so that the ripples in the water ripple pattern are scrolled according to rules, n ⁇ 1, the n Is a positive integer.
  • the IC illuminates pixels in the target area according to the control signal, including:
  • the IC periodically illuminates the m columns of designated pixels in the target area according to the second brightness value according to the control signal, so that the ripples in the water ripple pattern are scrolled according to rules;
  • the second brightness value is n/m of the first brightness value, m>n, and the m is a positive integer.
  • each pixel that is illuminated in the target area displays the same time and brightness.
  • the ripple in the water ripple pattern is a fingerprint.
  • the target image includes a plurality of images arranged in sequence.
  • the control circuit controls the target area on the display panel to display a target image, including:
  • the control circuit controls the target area on the display panel to cyclically display the plurality of sequentially arranged pictures.
  • the method further includes: when the control circuit receives the bright screen command, controlling the display panel to display an image to be displayed, the bright screen command instructing the display panel to enter a bright screen state.
  • a terminal comprising an optical fingerprint sensor and the display module of any of the first aspects
  • the display module further includes a protective film layer, the optical fingerprint sensor is disposed in an opening of the protective film layer, and the optical fingerprint sensor is connected to a processing subcircuit of the display module, wherein the opening is The orthographic projection on the display panel coincides with the fingerprint collection area,
  • the optical fingerprint sensor is configured to detect an optical signal reflected by a fingerprint texture, and generate a current signal according to the optical signal, where the optical signal is formed by the light emitted by the target image being reflected by the fingerprint texture;
  • the processing subcircuit is configured to acquire the current signal
  • the processing sub-circuit is further configured to identify the fingerprint texture according to the current signal.
  • a computer readable storage medium the storage medium storing a computer program, and when the computer program is executed by the processor, implementing the display method of the display module according to the second aspect.
  • a computer program product comprising instructions for causing a computer to perform the display method of the display module of the second aspect when executed on a computer is provided.
  • FIG. 1 is a schematic structural diagram of a display module according to an embodiment of the present application.
  • FIG. 2A is a schematic diagram of a water ripple pattern provided by an embodiment of the present application.
  • FIG. 2B is a schematic diagram of another water ripple pattern provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a pixel corresponding to a ripple in a water ripple pattern according to an embodiment of the present application
  • FIG. 4 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • the fingerprint collection function can be implemented in the display area of the terminal, when the terminal is in the blackout state, the user cannot determine the location of the fingerprint collection area, and the user needs to repeatedly test to determine the location of the fingerprint collection area, resulting in the terminal.
  • the fingerprint collection operation is cumbersome and has low reliability.
  • the embodiment of the present application provides a display module 10, as shown in FIG. 1, the display module 10 includes:
  • the display panel 101 and the control circuit (not shown in FIG. 1).
  • the control circuit is configured to control the target area A on the display panel 101 to display a target image when the display panel 101 is in the off-screen state, and the target area A includes the fingerprint collection area a.
  • the control circuit is connected to the display panel 101.
  • the display module 10 further includes: a protective film layer 102 on a side of the non-display surface of the display panel 101 , and a transparent cover plate 103 on a side of the display surface of the display panel 101 .
  • the protective film layer may include a foam layer, a graphite layer and a copper foil layer which are sequentially arranged in a direction away from the display panel.
  • the protective film layer can be used to secure the display panel.
  • the protective film layer can also function as a heat sink.
  • the transparent cover can be a glass cover.
  • the area covered by the orthographic projection of the fingerprint collection area a on the transparent cover 103 on the display panel 101 may completely coincide with the target area A on the display panel 101; or the fingerprint collection area on the transparent cover 103
  • the area covered by the orthographic projection on the display panel 101 may be located in the target area A on the display panel.
  • the display panel can be a self-illuminating display panel.
  • the display panel can be an organic light emitting diode (English: Organic Light Emitting Diode; OLED) display panel.
  • OLED Organic Light Emitting Diode
  • the OLED display panel adopts an organic semiconductor material and a luminescent material to display light under current driving, and the OLED display panel has the characteristics of self-luminous, low power consumption, high brightness, ultra-thin, and flexible.
  • the display module provided by the embodiment of the present application can control the target area on the display panel to display the target image when the display panel is in the off state, and the display module is included in the target area, including the fingerprint collection area.
  • the target image can be displayed in the fingerprint collection area for prompting the user to locate the fingerprint collection area. The user does not need to repeatedly test to determine the location of the fingerprint collection area, which simplifies the fingerprint collection operation and improves the fingerprint collection. Reliability.
  • the terminal includes the display module provided by the embodiment of the present application, and the area of the target area may be set to a smaller area.
  • the target area may be set to A rectangular area, which may have a size of 1 cm x 1 cm, that is, the target area has a length of 1 cm and a width of 1 cm.
  • the terminal of the display module provided by the embodiment of the present application may be an active-matrix organic light emitting diode (AMOLED) display device.
  • the AMOLED display device is displayed by electroluminescence of an organic light-emitting material, and has the characteristics of flexibility, lightness, low power consumption, fast response, and high contrast.
  • a time period in which the target area on the display panel displays the target image may be set. And except for the time period other than the time period, when the display panel is in the off state, the target area may not display an image.
  • the set target area may display the target image for a period of time from 8:00 to 22:00, and except for the time period other than 8:00 to 22:00, when the display panel is in the off state, the target area is not displayed. image.
  • the time period in which the target area on the display panel displays the target image may be preset in the control circuit of the display module, and the control circuit may follow the preset time when displaying the target image in the target area on the control display panel. Segment to control.
  • the time period in which the target area on the display panel displays the target image may also be set by the user on the terminal according to actual needs.
  • the time period of the target image is displayed on the target area on the display panel, and how to set the target area. The manner in which the time period of the target image is displayed is not limited.
  • control circuit can include a processing sub-circuit and an IC.
  • the processing sub-circuit is configured to generate a control signal according to the target image, and send the control signal to the IC; the IC is configured to illuminate the pixel in the target area according to the control signal to display the target image.
  • the display mode of the target area on the display panel can be displayed in various manners.
  • the following two display modes are used as an example for description:
  • the target image may be a water ripple pattern.
  • the ripples in the water ripple pattern can be scrolled in accordance with the rules. Since the ripples in the water ripple pattern can be scrolled according to the rules, the same pixel in the target area does not need to continuously emit light, so the display module can also extend the polarity of the pixels in the target area while ensuring the reliability of the fingerprint collection. The service life of the luminescent material.
  • the corrugations in the water ripple pattern may be fingerprints.
  • the water ripple pattern may be as shown in FIG. 2A or 2B.
  • the fingerprint in the water ripple pattern can be scrolled according to rules.
  • the control circuit may illuminate different pixels in the target area at different time periods to control the fingerprints in the water ripple pattern to be scrolled according to rules, thereby forming different water ripple patterns.
  • the rules of the present application are not limited to the above, and the rules are not limited.
  • the manner of controlling the fingerprint in the water ripple pattern to be scrolled according to a rule may include: the processing sub-circuit periodically sends different control signals to the IC, and the sent control signal may be programmed in advance in the processing sub-circuit;
  • the IC periodically illuminates a specified pixel in the target area according to the control signal. For example, the IC illuminates the designated pixel in the target area according to the control signal in the first time period to obtain the water ripple pattern as shown in FIG. 2A, and the IC is in the second.
  • the time period illuminates a designated pixel in the target area according to the control signal, and the water ripple pattern shown in FIG. 2B is obtained.
  • each pixel that is illuminated within the target area displays the same time and brightness.
  • each pixel in the target area displays 5 seconds and the brightness is the same, which can extend the life of the electroluminescent material in the pixels in the target area while ensuring the reliability of the fingerprint collection.
  • the display brightness of the target image is more uniform.
  • the target image may include a plurality of sequentially arranged pictures, and the plurality of sequentially arranged pictures are cyclically displayed on the target area.
  • the control circuit is specifically configured to control the target area on the display panel to cyclically display a plurality of sequentially arranged pictures when the display panel is in the off-screen state.
  • the target area of the display panel may continuously display one of the plurality of pictures arranged in sequence, or may flash and display one of the plurality of pictures arranged in sequence.
  • the target area blinks and displays one of the plurality of pictures arranged in sequence, the illumination time of the pixels can be shortened, and the life of the electroluminescent material in the pixels is prolonged.
  • control circuit controls the target area on the display panel to cyclically display a plurality of pictures arranged in sequence
  • control circuit can control the target area on the display panel to display a picture every 5 seconds.
  • the control circuit controls the target area on the display panel to cyclically display a plurality of images arranged in sequence, so that the pixels in the target area are turned on alternately, and the same pixel does not continuously emit light, so that the reliability of the fingerprint collection is ensured.
  • the display module can also extend the life of the electroluminescent material in the pixels in the target area.
  • the target area on the display panel displays the first picture
  • the target area on the display panel displays the second picture, the first picture and the second picture being different.
  • the control circuit controls the target area on the display panel to cyclically display the first picture and the second picture, and the same pixel is not continuously illuminated, thereby prolonging the service life of the electroluminescent material in the pixels in the target area.
  • the plurality of sequentially arranged pictures may be pictures that are included in the terminal including the display module.
  • the plurality of pictures arranged in sequence may also be saved to the terminal in advance by the user according to actual needs.
  • the control circuit may sequentially parse the plurality of pictures through the processing sub-circuit, and generate a control signal, and after receiving the control signal, the IC lights the pixels in the target area to display the plurality of pictures.
  • control circuit is further configured to control the target area on the display panel to normally display the image to be displayed when the display panel is in a bright screen state.
  • the display module provided by the embodiment of the present application can control the target area on the display panel to display the target image when the display panel is in the off state, and the display module is included in the target area, including the fingerprint collection area.
  • the target image can be displayed in the fingerprint collection area for prompting the user to locate the fingerprint collection area. The user does not need to repeatedly test to determine the location of the fingerprint collection area, which simplifies the fingerprint collection operation and improves the fingerprint collection. Reliability.
  • the embodiment of the present application provides a display module display method.
  • the display module is the display module described in the above embodiment.
  • the display module 10 shown in FIG. 1 may be used.
  • the display panel and the control circuit are included, and the method may include:
  • the control circuit controls the target area on the display panel to display the target image when receiving the blackout instruction, the target area includes a fingerprint collection area, and the blackout instruction instructs the display panel to enter the blackout state.
  • the display module 10 further includes: a protective film layer 102 on a side of the non-display surface of the display panel 101 , and a transparent cover plate 103 on a side of the display surface of the display panel 101 .
  • the protective film layer may include a foam layer, a graphite layer and a copper foil layer which are sequentially arranged in a direction away from the display panel.
  • the protective film layer can be used to secure the display panel.
  • the protective film layer can also function as a heat sink.
  • the transparent cover can be a glass cover.
  • the area covered by the orthographic projection of the fingerprint collection area a on the transparent cover 103 on the display panel 101 may completely coincide with the target area A on the display panel 101; or the fingerprint collection area on the transparent cover 103
  • the area covered by the orthographic projection on the display panel 101 may be located in the target area A on the display panel.
  • the display panel may be a self-illuminating display panel, for example, the display panel may be an OLED display panel.
  • the display method of the display module provided by the embodiment of the present application is applied to a display module.
  • the control circuit can control the target area on the display panel to display the target image, because the target area includes The fingerprint collection area, so the display module can display the target image in the fingerprint collection area when the display panel is in the blanking state, and is used to prompt the user for the location of the fingerprint collection area, and the user does not need to repeatedly test to determine the position of the fingerprint collection area, which simplifies The fingerprint collection operation improves the reliability of fingerprint collection.
  • control circuit may include a processing sub-circuit and an IC
  • control circuit controlling the display of the target image on the target area of the display panel may include:
  • the processing sub-circuit generates a control signal according to the target image and transmits a control signal to the IC; the IC illuminates the pixels in the target area according to the control signal to display the target image.
  • the target image may be a water ripple pattern.
  • the IC illuminates the pixels in the target area according to the control signal, and may include:
  • the IC periodically illuminates the n columns of designated pixels in the target area according to the first brightness value according to the control signal, so that the ripples in the water ripple pattern are scrolled according to the rule, n ⁇ 1, and n is a positive integer.
  • the corrugation in the water ripple pattern may be a fingerprint.
  • the water ripple pattern may be as shown in FIG. 2A or 2B.
  • the control circuit can illuminate the target in different time periods. Different pixels in the area are controlled to scroll the fingerprints in the water ripple pattern to form different water ripple patterns.
  • the rules of the present application are not limited to the above, and the rules are not limited.
  • the first time period and the second time period may be the same, for example, each may be 5 seconds.
  • each pixel that is illuminated within the target area displays the same time and brightness.
  • each pixel in the target area displays 5 seconds and the brightness is the same, which can extend the life of the electroluminescent material in the pixels in the target area while ensuring the reliability of the fingerprint collection.
  • the display brightness of the target image is more uniform.
  • the intensity of the light that is irradiated onto the fingerprint pattern needs to reach a certain threshold to ensure that the optical fingerprint sensor can detect the light reflected by the fingerprint pattern. Signal and generate a current signal. Therefore, the brightness of the target image displayed on the target area on the display panel needs to reach the threshold.
  • the IC illuminates the pixels in the target area according to the control signal, and may include:
  • the IC periodically illuminates the m-column designated pixels in the target area according to the second brightness value according to the control signal, so that the ripples in the water ripple pattern are scrolled according to the rule; wherein the second brightness value is n/m of the first brightness value. , m>n, m is a positive integer.
  • Increasing the number of pixel columns when displaying the water ripple pattern can reduce the brightness value of each pixel that is illuminated, thereby extending the useful life of the electroluminescent material in the pixels within the target area.
  • n 1 and m is 2.
  • the pixels in the solid frame M are the specified pixels in the column of the target region
  • the pixels in the dotted frame N are the specified pixels in the column in the target region.
  • the IC may illuminate the pixels in the solid line frame M according to the first brightness value Q according to the control signal, or according to The control signal illuminates the pixels in the dashed box N according to the second luminance value Q/2.
  • the luminance value of the pixel is smaller than the manner of illuminating the pixels in the solid line frame M according to the first luminance value Q. Therefore, the life of the electroluminescent material in the pixels in the broken line frame N can be extended.
  • the target image may further include a plurality of sequentially arranged pictures
  • the control circuit controls the target area on the display panel to display the target image, which may include:
  • the control circuit controls the target area on the display panel to cyclically display a plurality of images arranged in sequence.
  • the target area of the display panel may continuously display one of the plurality of pictures arranged in sequence, or may flash and display one of the plurality of pictures arranged in sequence.
  • the illumination time of the pixels can be shortened, and the life of the electroluminescent material in the pixels is prolonged.
  • the control circuit controls the target area on the display panel to cyclically display a plurality of pictures arranged in sequence, for example, the target area of the display panel can be replaced by displaying a picture every 5 seconds.
  • the control circuit controls the target area on the display panel to display a plurality of sequentially arranged pictures, so that the pixels in the target area are turned on alternately, and the same pixel does not continuously emit light, so the reliability of the fingerprint collection is ensured.
  • the display module can also extend the service life of the electroluminescent material in the pixels in the target area.
  • the target area on the display panel displays the first picture
  • the target area on the display panel displays the second picture, the first picture being different from the second picture.
  • the control circuit controls the target area on the display panel to cyclically display the first picture and the second picture, and the same pixel is not continuously illuminated, thereby prolonging the service life of the electroluminescent material in the pixels in the target area.
  • the plurality of sequentially arranged pictures may be pictures that are included in the terminal including the display module.
  • the plurality of pictures arranged in sequence may also be saved to the terminal in advance by the user according to actual needs.
  • the control circuit may sequentially parse the plurality of pictures through the processing sub-circuit, and generate a control signal, and the IC lights the pixels in the target area after receiving the control signal to display the plurality of pictures.
  • the display method of the foregoing display module may further include:
  • the control circuit controls the display panel to display an image to be displayed upon receiving a bright screen command.
  • a bright screen command instructs the display panel to enter a bright screen state.
  • the target area on the display panel normally displays the image to be displayed.
  • the display method of the display module provided by the embodiment of the present application is applied to a display module.
  • the control circuit can control the target area on the display panel to display the target image, because the target area includes The fingerprint collection area, so the display module can display the target image in the fingerprint collection area when the display panel is in the blanking state, and is used to prompt the user for the location of the fingerprint collection area, and the user does not need to repeatedly test to determine the position of the fingerprint collection area, which simplifies The fingerprint collection operation improves the reliability of fingerprint collection.
  • the embodiment of the present application further provides a chip, which includes programmable logic circuits and/or program instructions, and is used to implement the display method of the display module provided by the above embodiments when the chip is in operation.
  • the embodiment of the present application further provides a computer readable storage medium, which is a non-volatile readable storage medium, where the storage medium stores a computer program, and when the computer program is executed by the processor, the implementation of the foregoing embodiment is implemented.
  • the display method of the display module is a non-volatile readable storage medium, where the storage medium stores a computer program, and when the computer program is executed by the processor, the implementation of the foregoing embodiment is implemented.
  • the embodiment of the present application further provides a computer program product including instructions, which when executed on a computer, causes the computer to execute the display method of the display module provided by the above embodiments.
  • the terminal includes an optical fingerprint sensor 20 and a display module provided by the foregoing embodiment.
  • the display module may be the display module shown in FIG. 1 .
  • the display module 10 further includes a protective film layer 102 and a transparent cover plate 103.
  • the optical fingerprint sensor 20 is disposed in an opening of the protective film layer 102, and the optical sub-sensor of the optical fingerprint sensor 20 and the display module 10 Connected, the orthographic projection of the aperture on the display panel 101 can coincide with the target area A.
  • the optical fingerprint sensor is configured to detect an optical signal reflected by the fingerprint pattern, and generate a current signal according to the optical signal, where the optical signal is formed by the reflection of the fingerprint image by the light emitted by the target image.
  • the processing sub-circuit is configured to acquire a current signal; the processing sub-circuit is further configured to identify a fingerprint texture according to the current signal.
  • Fingerprints are invariant features that are inherent in the human body, unique and distinguishable from others. It consists of a series of fingerprint ridges and fingerprint valleys on the surface of the finger skin. The composition details of these fingerprint ridges and fingerprint valleys usually include the bifurcation of the fingerprint ridge, the end of the fingerprint ridge, the arch, the tent arch, Details such as left-handed, right-handed, spiral or double-rotated, these details determine the uniqueness of the fingerprint pattern.
  • the processing sub-circuit can determine the position of the fingerprint ridge and the fingerprint valley according to the current signal, thereby implementing the fingerprint recognition function. Specifically, the processing sub-circuit can determine the fingerprint texture according to the position of the fingerprint ridge and the fingerprint valley, and then compare the fingerprint texture with the fingerprint pattern pre-stored in the fingerprint database. If the two match, the user can operate the terminal. If the two do not match, the user cannot operate the terminal.
  • the terminal may be an AMOLED display device.
  • the terminal can be any product or component having a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • a display function such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • the terminal provided by the embodiment of the present application includes a display module, and the control circuit can control the target area on the display panel to display the target image when receiving the screen-out instruction, because the target area includes the fingerprint collection area. Therefore, when the display panel is in the blanking state, the display module can display the target image in the fingerprint collection area for prompting the location of the fingerprint collection area of the user, and the user does not need to repeatedly test to determine the location of the fingerprint collection area, which simplifies the fingerprint collection operation. Improve the reliability of fingerprint collection.

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Abstract

本申请公开了一种显示模组及其显示方法、终端，属于显示技术领域。所述显示模组包括：显示面板和控制电路；其中，所述控制电路用于在所述显示面板处于熄屏状态时，控制所述显示面板上的目标区域显示目标图像，所述目标区域包括指纹采集区域。本申请解决了相关技术中终端上的指纹采集操作繁琐，可靠性较低的问题。本申请用于指纹采集。

Description

显示模组及其显示方法、终端
本申请要求于2017年08月28日提交中国国家知识产权局、申请号为201710752717.5、发明名称为“显示模组及其显示方法、终端”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
本申请涉及显示技术领域，特别涉及一种显示模组及其显示方法、终端。
背景技术
随着显示技术的快速发展，实现了终端的全屏显示。在全屏显示的终端中，取消了原先可用于指纹采集的Home键(主键)，因此若需要在终端的显示面所在侧实现指纹采集功能，指纹采集区域只能设置在终端的显示区域中。
终端中的显示模组一般包括自发光的显示面板、位于显示面板的显示面所在侧的玻璃盖板以及位于显示面板的非显示面所在侧的保护膜层。相关技术中，为了实现在终端的显示区域实现指纹采集功能，需要在玻璃盖板上的指纹采集区域集成压力传感器，该压力传感器与显示面板的驱动集成电路(英文：integrated circuit；简称：IC)连接，并在保护膜层上形成开孔，在开孔中设置光学指纹传感器。其中，开孔在玻璃盖板上的正投影与指纹采集区域重合。当用户进行指纹解锁时，玻璃盖板上的指纹采集区域的压力传感器能够接收到压力触控操作，然后显示面板的驱动IC可以点亮指纹采集区域在显示面板上的正投影所覆盖的区域的像素，该区域的像素发出的光线可以经由指纹的指纹谷和指纹脊反射至光学指纹传感器中，再由终端中与光学指纹传感器连接的处理子电路进行指纹配对分析等后续处理。
发明内容
本申请实施例提供了一种显示模组及其显示方法、终端，所述技术方案如下：
第一方面，提供了一种显示模组，包括：
显示面板和控制电路；
其中，所述控制电路用于在所述显示面板处于熄屏状态时，控制所述显示面板上的目标区域显示目标图像，所述目标区域包括指纹采集区域。
可选的，所述控制电路包括处理子电路和集成电路IC，
所述处理子电路用于根据所述目标图像生成控制信号，并向所述IC发送所述控制信号；
所述IC用于根据所述控制信号点亮所述目标区域内的像素，以显示所述目标图像。
可选的，所述目标图像为水波纹图案，所述水波纹图案中的波纹能够按照规则滚动显示。
可选的，所述目标区域内被点亮的每个像素显示的时间和亮度均相同。
可选的，所述水波纹图案中的波纹为指纹。
可选的，所述目标图像包括多张依次排布的图片，所述多张依次排布的图片在所述目标区域上循环显示。
第二方面，提供了一种显示模组的显示方法，所述显示模组包括显示面板和控制电路，所述方法包括：
所述控制电路在接收到熄屏指令时，控制所述显示面板上的目标区域显示目标图像，所述目标区域包括指纹采集区域，所述熄屏指令指示所述显示面板进入熄屏状态。
可选的，所述控制电路包括处理子电路和集成电路IC，所述控制电路控制所述显示面板上的目标区域显示目标图像，包括：
所述处理子电路根据所述目标图像生成控制信号，并向所述IC发送所述控制信号；
所述IC根据所述控制信号点亮所述目标区域内的像素，以显示所述目标图像。
可选的，所述目标图像为水波纹图案，
所述IC根据所述控制信号点亮所述目标区域内的像素，包括：
所述IC根据所述控制信号按照第一亮度值周期性点亮所述目标区域内的n列指定像素，以使所述水波纹图案中的波纹按照规则滚动显示，n≥1，所述n为正整数。
可选的，所述IC根据所述控制信号点亮所述目标区域内的像素，包括：
所述IC根据所述控制信号按照第二亮度值周期性点亮所述目标区域内的m 列指定像素，以使所述水波纹图案中的波纹按照规则滚动显示；
其中，所述第二亮度值为所述第一亮度值的n/m，m>n，所述m为正整数。
可选的，所述目标区域内被点亮的每个像素显示的时间和亮度均相同。
可选的，所述水波纹图案中的波纹为指纹。
可选的，所述目标图像包括多张依次排布的图片，
所述控制电路控制所述显示面板上的目标区域显示目标图像，包括：
所述控制电路控制所述显示面板上的目标区域循环显示所述多张依次排布的图片。
可选的，所述方法还包括：所述控制电路在接收到亮屏指令时，控制所述显示面板显示待显示图像，所述亮屏指令指示所述显示面板进入亮屏状态。
第三方面，提供了一种终端，所述终端包括光学指纹传感器和第一方面任一所述的显示模组，
所述显示模组还包括保护膜层，所述光学指纹传感器设置在所述保护膜层的开孔中，所述光学指纹传感器与所述显示模组的处理子电路连接，所述开孔在所述显示面板上的正投影与所述指纹采集区域重合，
所述光学指纹传感器用于检测经由指纹纹路反射的光信号，并根据所述光信号产生电流信号，所述光信号是所述目标图像发出的光线被所述指纹纹路反射后形成的；
所述处理子电路用于获取所述电流信号；
所述处理子电路还用于根据所述电流信号识别所述指纹纹路。
第四方面，提供了一种计算机可读存储介质，该存储介质存储有计算机程序，计算机程序被处理器执行时，实现第二方面所述的显示模组的显示方法。
第五方面，提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行第二方面所述的显示模组的显示方法。
附图说明
图1是本申请实施例提供的一种显示模组的结构示意图；
图2A是本申请实施例提供的一种水波纹图案的示意图；
图2B是本申请实施例提供的另一种水波纹图案的示意图；
图3是本申请实施例提供的一种水波纹图案中的波纹对应的像素的结构示意图；
图4是本申请实施例提供的一种终端的结构示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。
相关技术中，虽然能够在终端的显示区域实现指纹采集功能，但是在终端处于熄屏状态时，用户无法确定指纹采集区域的位置，用户需要反复试验以确定指纹采集区域的位置，导致终端上的指纹采集操作繁琐，可靠性较低。
针对上述问题，本申请实施例提供了一种显示模组10，如图1所示，该显示模组10包括：
显示面板101和控制电路(图1中未画出)。
其中，控制电路用于在显示面板101处于熄屏状态时，控制显示面板101上的目标区域A显示目标图像，该目标区域A包括指纹采集区域a。该控制电路与显示面板101连接。
进一步的，如图1所示，该显示模组10还可以包括：位于显示面板101的非显示面所在侧的保护膜层102，以及位于显示面板101的显示面所在侧的透明盖板103。
其中，保护膜层可以包括沿远离显示面板方向依次排布的泡棉层、石墨层和铜箔层。保护膜层可以用于固定保护显示面板。此外，保护膜层还可以起到散热的作用。
透明盖板可以为玻璃盖板。
可选的，透明盖板103上的指纹采集区域a在显示面板101上的正投影所覆盖的区域可以与显示面板101上的目标区域A完全重合；或者，透明盖板103上的指纹采集区域a在显示面板101上的正投影所覆盖的区域可以位于显示面板上的目标区域A内。
可选的，该显示面板可以为自发光的显示面板，例如该显示面板可以为有机发光二极管(英文：Organic Light Emitting Diode；简称：OLED)显示面板。OLED显示面板采用有机半导体材料和发光材料在电流驱动下发光实现显示，OLED显示面板具有自发光、低功耗、高亮度、超轻薄、柔性等特点。
综上所述，本申请实施例提供的显示模组，控制电路在显示面板处于熄屏状态时，可以控制显示面板上的目标区域显示目标图像，由于目标区域包括指 纹采集区域，因此显示模组在显示面板处于熄屏状态时，可以在指纹采集区域显示目标图像，用于提示用户指纹采集区域的位置，用户无需反复试验以确定指纹采集区域的位置，简化了指纹采集操作，提高了指纹采集的可靠性。
可选的，为了省电以提高终端的续航能力，该终端包括本申请实施例提供的显示模组，可以将该目标区域的面积设置为较小的面积，例如，可以将该目标区域设置为矩形区域，该目标区域的大小可以为1厘米×1厘米，也即是，该目标区域的长度为1厘米，宽度为1厘米。示例的，包括本申请实施例提供的显示模组的终端可以为有源矩阵有机发光二极体(Active-matrix organic light emitting diode，AMOLED)显示装置。AMOLED显示装置通过有机发光材料电致发光来显示，具有柔性、轻薄、低功耗、响应快和对比度高等特点。
进一步的，可以设置该显示面板上的目标区域显示目标图像的时间段。而除该时间段之外的时间段，当显示面板处于熄屏状态时，该目标区域可以不显示图像。比如设置的目标区域显示目标图像的时间段可以为8:00至22:00，而除8:00至22:00之外的时间段，当显示面板处于熄屏状态时，该目标区域不显示图像。
需要说明的是，显示面板上的目标区域显示目标图像的时间段可以在显示模组的控制电路中预先设置，控制电路在控制显示面板上的目标区域显示目标图像时，可以按照预先设置的时间段来控制。此外，显示面板上的目标区域显示目标图像的时间段也可以由用户根据实际需求在终端上进行设置，本申请实施例对显示面板上的目标区域显示目标图像的时间段，以及如何设置目标区域显示目标图像的时间段的方式不做限定。
可选的，控制电路可以包括处理子电路和IC。其中，处理子电路用于根据目标图像生成控制信号，并向IC发送该控制信号；IC用于根据控制信号点亮目标区域内的像素，以显示目标图像。
实际应用中，显示面板上的目标区域显示目标图像的显示方式可以有多种，本申请实施例以以下两种显示方式为例进行说明：
在第一种显示方式中，该目标图像可以为水波纹图案。水波纹图案中的波纹能够按照规则滚动显示。由于水波纹图案中的波纹能够按照规则滚动显示，所以目标区域内的同一像素无需持续发光，因此在保证指纹采集的可靠性的同时，该显示模组还可以延长目标区域内的像素中电致发光材料的使用寿命。
可选的，该水波纹图案中的波纹可以为指纹，示例的，该该水波纹图案可 以如图2A或图2B所示。其中，该该水波纹图案中的指纹能够按照规则滚动显示。例如在第一时间段，该水波纹图案如图2A所示；在第二时间段，该水波纹图案如图2B所示。在本申请中，控制电路可以在不同时间段点亮目标区域内的不同像素，以控制该水波纹图案中的指纹按照规则滚动显示，进而形成不同的该水波纹图案。其中，该规则可以为由上至下、由左至右或者由内至外，本申请实施例对此不做限定。
可选的，控制该水波纹图案中的指纹按照规则滚动显示的方式可以包括：处理子电路向IC周期性发送不同的控制信号，发送的控制信号可以是预先在处理子电路中编程设置的；IC根据控制信号周期性点亮目标区域内的指定像素，例如IC在第一时间段根据控制信号点亮目标区域内的指定像素，得到如图2A所示的该水波纹图案，IC在第二时间段根据控制信号点亮目标区域内的指定像素，得到图2B所示的该水波纹图案。
可选的，目标区域内被点亮的每个像素显示的时间和亮度均相同。例如目标区域内的每个像素显示的时间均为5秒，且显示的亮度均相同，可以在保证指纹采集的可靠性的同时，延长目标区域内的像素中电致发光材料的使用寿命，且目标图像的显示亮度更加均匀。
在第二种显示方式中，该目标图像可以包括多张依次排布的图片，该多张依次排布的图片在目标区域上循环显示。相应的，控制电路具体用于在显示面板处于熄屏状态时，控制显示面板上的目标区域循环显示多张依次排布的图片。其中，显示面板的目标区域可以持续循环显示多张依次排布的图片中的一张，或者可以闪烁循环显示多张依次排布的图片中的一张。目标区域闪烁循环显示多张依次排布的图片中的一张时，可以缩短像素的发光时间，延长像素中电致发光材料的使用寿命。
控制电路控制显示面板上的目标区域循环显示多张依次排布的图片时，示例的，控制电路可以控制显示面板上的目标区域每隔5秒更换显示一张图片。
控制电路控制显示面板上的目标区域循环显示多张依次排布的图片，可以使目标区域内的像素被轮流点亮，则存在同一像素不会持续发光，所以在保证指纹采集的可靠性的同时，该显示模组还可以延长目标区域内的像素中电致发光材料的使用寿命。
示例的，假设在第一时间段，显示面板上的目标区域显示第一图片，在第二时间段，显示面板上的目标区域显示第二图片，第一图片和第二图片不同。 控制电路控制显示面板上的目标区域循环显示第一图片和第二图片，则存在同一像素不会被持续点亮，延长了目标区域内的像素中电致发光材料的使用寿命。
可选的，该多张依次排布的图片可以为包括该显示模组的终端自带的图片。此外，该多张依次排布的图片也可以由用户根据实际需求预先保存至终端。控制电路在显示面板处于熄屏状态时，可以通过处理子电路依次解析该多张图片，并生成控制信号，IC接收到控制信号后点亮目标区域内的像素，以显示该多张图片。
需要说明的是，控制电路还用于在显示面板处于亮屏状态时，控制显示面板上的目标区域正常显示待显示图像。
综上所述，本申请实施例提供的显示模组，控制电路在显示面板处于熄屏状态时，可以控制显示面板上的目标区域显示目标图像，由于目标区域包括指纹采集区域，因此显示模组在显示面板处于熄屏状态时，可以在指纹采集区域显示目标图像，用于提示用户指纹采集区域的位置，用户无需反复试验以确定指纹采集区域的位置，简化了指纹采集操作，提高了指纹采集的可靠性。
本申请实施例提供了一种显示模组的显示方法，该显示模组为上述实施例所述的显示模组，示例的，可以为如图1所示的显示模组10，该显示模组包括显示面板和控制电路，该方法可以包括：
控制电路在接收到熄屏指令时，控制显示面板上的目标区域显示目标图像，该目标区域包括指纹采集区域，熄屏指令指示显示面板进入熄屏状态。
进一步的，如图1所示，该显示模组10还可以包括：位于显示面板101的非显示面所在侧的保护膜层102，以及位于显示面板101的显示面所在侧的透明盖板103。
其中，保护膜层可以包括沿远离显示面板方向依次排布的泡棉层、石墨层和铜箔层。保护膜层可以用于固定保护显示面板。此外，保护膜层还可以起到散热的作用。
透明盖板可以为玻璃盖板。
可选的，透明盖板103上的指纹采集区域a在显示面板101上的正投影所覆盖的区域可以与显示面板101上的目标区域A完全重合；或者，透明盖板103上的指纹采集区域a在显示面板101上的正投影所覆盖的区域可以位于显示面板上的目标区域A内。
可选的，该显示面板可以为自发光的显示面板，例如该显示面板可以为OLED显示面板。
综上所述，本申请实施例提供的显示模组的显示方法，应用于显示模组，控制电路在接收到熄屏指令时，可以控制显示面板上的目标区域显示目标图像，由于目标区域包括指纹采集区域，因此显示模组在显示面板处于熄屏状态时，可以在指纹采集区域显示目标图像，用于提示用户指纹采集区域的位置，用户无需反复试验以确定指纹采集区域的位置，简化了指纹采集操作，提高了指纹采集的可靠性。
可选的，控制电路可以包括处理子电路和IC，控制电路控制显示面板的目标区域上显示目标图像可以包括：
处理子电路根据目标图像生成控制信号，并向IC发送控制信号；IC根据控制信号点亮目标区域内的像素，以显示目标图像。
可选的，目标图像可以为水波纹图案，相应的，IC根据控制信号点亮目标区域内的像素，可以包括：
IC根据控制信号按照第一亮度值周期性点亮目标区域内的n列指定像素，以使水波纹图案中的波纹按照规则滚动显示，n≥1，n为正整数。
可选的，该水波纹图案中的波纹可以为指纹，示例的，该水波纹图案可以如图2A或图2B所示。示例的，在第一时间段，该水波纹图案如图2A所示，在第二时间段，该水波纹图案如图2B所示，在本申请中，控制电路可以在不同时间段点亮目标区域内的不同像素，以控制水波纹图案中的指纹按照规则滚动显示，进而形成不同的水波纹图案。其中，该规则可以为由上至下、由左至右或者由内至外，本申请实施例对此不做限定。其中，第一时间段和第二时间段可以相同，比如可以均为5秒。
可选的，目标区域内被点亮的每个像素显示的时间和亮度均相同。例如目标区域内的每个像素显示的时间均为5秒，且显示的亮度均相同，可以在保证指纹采集的可靠性的同时，延长目标区域内的像素中电致发光材料的使用寿命，且目标图像的显示亮度更加均匀。
为了使显示模组的处理子电路能够有效地识别指纹纹路，在采集指纹时，照射到指纹纹路上的光线的强度需要达到一定的阈值，以保证光学指纹传感器能够检测到由指纹纹路反射的光信号，并产生电流信号。因此，在显示面板上的目标区域显示的目标图像的亮度需要达到该阈值。
进一步的，由于在目标区域显示的水波纹图案用于提示用户指纹采集区域的位置，因此可以对该目标区域显示水波纹图案的显示效果不做特殊要求，比如可以在显示水波纹图案时进行模糊化处理，则IC根据控制信号点亮目标区域内的像素，可以包括：
IC根据控制信号按照第二亮度值周期性点亮目标区域内的m列指定像素，以使水波纹图案中的波纹按照规则滚动显示；其中，第二亮度值为第一亮度值的n/m，m>n，m为正整数。
在显示水波纹图案时，增加像素列数可以降低被点亮的每个像素的亮度值，从而延长目标区域内的像素中电致发光材料的使用寿命。
示例的，取n为1，m为2，如图3所示，实线框M中的像素为目标区域内的1列指定像素，虚线框N中的像素为目标区域内的2列指定像素，假设第一亮度值为Q，则第二亮度值为Q/2，则在显示水波纹图案时，IC可以根据控制信号按照第一亮度值Q点亮实线框M中的像素，或者根据控制信号按照第二亮度值Q/2点亮虚线框N中的像素。当IC根据控制信号按照第二亮度值Q/2点亮虚线框N中的像素时，相较于按照第一亮度值Q点亮实线框M中的像素的方式，像素的亮度值更小，所以可以延长虚线框N中的像素中电致发光材料的使用寿命。
可选的，目标图像还可以包括多张依次排布的图片，则控制电路控制显示面板上的目标区域显示目标图像，可以包括：
控制电路控制显示面板上的目标区域循环显示多张依次排布的图片。
其中，显示面板的目标区域可以持续循环显示多张依次排布的图片中的一张，或者可以闪烁循环显示多张依次排布的图片中的一张。目标区域闪烁循环显示多张依次排布的图片中的一张时，可以缩短像素的发光时间，延长像素中电致发光材料的使用寿命。
控制电路控制显示面板上的目标区域循环显示多张依次排布的图片时，示例的，显示面板的目标区域可以每隔5秒更换显示一张图片。
通过控制电路控制显示面板上的目标区域循环显示多张依次排布的图片，可以使目标区域内的像素被轮流点亮，则存在同一像素不会持续发光，所以在保证指纹采集的可靠性的同时，该显示模组还可以延长目标区域内的像素中电致发光材料的使用寿命。
示例的，假设在第一时间段，显示面板上的目标区域显示第一图片，在第 二时间段，显示面板上的目标区域显示第二图片，第一图片和第二图片不同。控制电路控制显示面板上的目标区域循环显示第一图片和第二图片，则存在同一像素不会被持续点亮，延长了目标区域内的像素中电致发光材料的使用寿命。
可选的，该多张依次排布的图片可以为包括该显示模组的终端自带的图片。此外，该多张依次排布的图片也可以由用户根据实际需求预先保存至终端。控制电路在接收到熄屏指令时，可以通过处理子电路依次解析该多张图片，并生成控制信号，IC接收到控制信号后点亮目标区域内的像素，以显示该多张图片。
进一步的，上述显示模组的显示方法还可以包括：
控制电路在接收到亮屏指令时，控制显示面板显示待显示图像。亮屏指令指示显示面板进入亮屏状态。
也即是，在显示面板处于亮屏状态时，显示面板上的目标区域正常显示待显示图像。
综上所述，本申请实施例提供的显示模组的显示方法，应用于显示模组，控制电路在接收到熄屏指令时，可以控制显示面板上的目标区域显示目标图像，由于目标区域包括指纹采集区域，因此显示模组在显示面板处于熄屏状态时，可以在指纹采集区域显示目标图像，用于提示用户指纹采集区域的位置，用户无需反复试验以确定指纹采集区域的位置，简化了指纹采集操作，提高了指纹采集的可靠性。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述方法实施例中的过程，可以参考前述装置实施例中各个模块的具体工作过程，在此不再赘述。
本申请实施例还提供了一种芯片，该芯片包括可编程逻辑电路和/或程序指令，当该芯片运行时用于实现上述实施例所提供的显示模组的显示方法。
本申请实施例还提供了一种计算机可读存储介质，该存储介质为非易失性可读存储介质，该存储介质存储有计算机程序，计算机程序被处理器执行时，实现上述实施例所提供的显示模组的显示方法。
本申请实施例还提供一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述实施例所提供的显示模组的显示方法。
本申请实施例提供了一种终端，如图4所示，该终端包括光学指纹传感器 20和上述实施例提供的显示模组，示例的，该显示模组可以为图1所示的显示模组10，该显示模组10还可以包括保护膜层102和透明盖板103，该光学指纹传感器20设置在保护膜层102的开孔中，该光学指纹传感器20与显示模组10的处理子电路连接，该开孔在显示面板101上的正投影可以与目标区域A重合。
该光学指纹传感器用于检测经由指纹纹路反射的光信号，并根据光信号产生电流信号，光信号是目标图像发出的光线被指纹纹路反射后形成的。
该处理子电路用于获取电流信号；该处理子电路还用于根据电流信号识别指纹纹路。
指纹是人体与生俱来、独一无二并可与他人相区别的不变特征。它是由指端皮肤表面上一系列的指纹脊和指纹谷组成的，这些指纹脊和指纹谷的组成细节通常包括指纹脊的分叉、指纹脊的末端、拱形、帐篷式的拱形、左旋、右旋、螺旋或双旋等细节，这些细节决定了指纹图案的唯一性。由于指纹脊的光折射率与指纹谷的光折射率不同，所以在像素发光时，由指纹脊反射的光的强度与由指纹谷反射的光的强度不同，因而由指纹脊反射的光信号与由指纹谷反射的光信号不同，最终光学指纹传感器产生的电流信号也不同，因此，处理子电路可以根据电流信号确定指纹脊和指纹谷的位置，进而实现指纹识别功能。具体的，处理子电路可以根据指纹脊和指纹谷的位置确定指纹纹路，再将该指纹纹路与预先存储在指纹库中的指纹纹路进行比对，若二者吻合，用户则可以对终端进行操作，若二者不吻合，用户则无法对终端进行操作。
可选的，终端可以为AMOLED显示装置。
可选的，该终端可以为手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
综上所述，本申请实施例提供的终端，该终端包括显示模组，控制电路在接收到熄屏指令时，可以控制显示面板上的目标区域显示目标图像，由于目标区域包括指纹采集区域，因此显示模组在显示面板处于熄屏状态时，可以在指纹采集区域显示目标图像，用于提示用户指纹采集区域的位置，用户无需反复试验以确定指纹采集区域的位置，简化了指纹采集操作，提高了指纹采集的可靠性。
以上所述仅为本申请的可选实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (15)

  1. 一种显示模组，包括：
    显示面板和控制电路；
    其中，所述控制电路用于在所述显示面板处于熄屏状态时，控制所述显示面板上的目标区域显示目标图像，所述目标区域包括指纹采集区域。
  2. 根据权利要求1所述的显示模组，所述控制电路包括处理子电路和集成电路IC，
    所述处理子电路用于根据所述目标图像生成控制信号，并向所述IC发送所述控制信号；
    所述IC用于根据所述控制信号点亮所述目标区域内的像素，以显示所述目标图像。
  3. 根据权利要求2所述的显示模组，
    所述目标图像为水波纹图案，所述水波纹图案中的波纹能够按照规则滚动显示。
  4. 根据权利要求3所述的显示模组，
    所述目标区域内被点亮的每个像素显示的时间和亮度均相同。
  5. 根据权利要求3所述的显示模组，
    所述水波纹图案中的波纹为指纹。
  6. 根据权利要求1所述的显示模组，
    所述目标图像包括多张依次排布的图片，所述多张依次排布的图片在所述目标区域上循环显示。
  7. 一种显示模组的显示方法，所述显示模组包括显示面板和控制电路，所述方法包括：
    所述控制电路在接收到熄屏指令时，控制所述显示面板上的目标区域显示 目标图像，所述目标区域包括指纹采集区域，所述熄屏指令指示所述显示面板进入熄屏状态。
  8. 根据权利要求7所述的方法，所述控制电路包括处理子电路和集成电路IC，所述控制电路控制所述显示面板上的目标区域显示目标图像，包括：
    所述处理子电路根据所述目标图像生成控制信号，并向所述IC发送所述控制信号；
    所述IC根据所述控制信号点亮所述目标区域内的像素，以显示所述目标图像。
  9. 根据权利要求8所述的方法，所述目标图像为水波纹图案，
    所述IC根据所述控制信号点亮所述目标区域内的像素，包括：
    所述IC根据所述控制信号按照第一亮度值周期性点亮所述目标区域内的n列指定像素，以使所述水波纹图案中的波纹按照规则滚动显示，n≥1，所述n为正整数。
  10. 根据权利要求9所述的方法，所述IC根据所述控制信号点亮所述目标区域内的像素，包括：
    所述IC根据所述控制信号按照第二亮度值周期性点亮所述目标区域内的m列指定像素，以使所述水波纹图案中的波纹按照规则滚动显示；
    其中，所述第二亮度值为所述第一亮度值的n/m，m>n，所述m为正整数。
  11. 根据权利要求9或10所述的方法，
    所述目标区域内被点亮的每个像素显示的时间和亮度均相同。
  12. 根据权利要求9或10所述的方法，
    所述水波纹图案中的波纹为指纹。
  13. 根据权利要求7所述的方法，所述目标图像包括多张依次排布的图片，
    所述控制电路控制所述显示面板上的目标区域显示目标图像，包括：
    所述控制电路控制所述显示面板上的目标区域循环显示所述多张依次排布 的图片。
  14. 根据权利要求7所述的方法，所述方法还包括：
    所述控制电路在接收到亮屏指令时，控制所述显示面板显示待显示图像，所述亮屏指令指示所述显示面板进入亮屏状态。
  15. 一种终端，所述终端包括光学指纹传感器和权利要求1至6任一所述的显示模组，
    所述显示模组还包括保护膜层，所述光学指纹传感器设置在所述保护膜层的开孔中，所述光学指纹传感器与所述显示模组的处理子电路连接，所述开孔在所述显示面板上的正投影与所述指纹采集区域重合，
    所述光学指纹传感器用于检测经由指纹纹路反射的光信号，并根据所述光信号产生电流信号，所述光信号是所述目标图像发出的光线被所述指纹纹路反射后形成的；
    所述处理子电路用于获取所述电流信号；
    所述处理子电路还用于根据所述电流信号识别所述指纹纹路。
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