CN107886037B - Display device and electronic apparatus - Google Patents

Display device and electronic apparatus Download PDF

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Publication number
CN107886037B
CN107886037B CN201610874651.2A CN201610874651A CN107886037B CN 107886037 B CN107886037 B CN 107886037B CN 201610874651 A CN201610874651 A CN 201610874651A CN 107886037 B CN107886037 B CN 107886037B
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area
display panel
region
photoelectric sensor
display device
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CN107886037A (en
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刘安昱
江忠胜
唐矩
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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    • 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
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • 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]
    • G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
    • G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
    • G06F3/04886—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures by partitioning the display area of the touch-screen or the surface of the digitising tablet into independently controllable areas, e.g. virtual keyboards or menus
    • 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
    • G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Image Input (AREA)

Abstract

The present disclosure relates to a display device including: a display panel; a fingerprint sensor disposed at a first region of the display panel; the display panel comprises a first area and a second area, wherein the second area is used for displaying images except the first area in the display panel, the first area is used for identifying fingerprints, and the first area is also used for displaying virtual keys and/or state icons. According to the technical scheme of the disclosure, although the light transmittance of the first area is affected by the fingerprint sensor, the area is still transparent, that is, can still display content, so that the content such as virtual keys and status icons can be displayed through the area, and the image displayed by the second area is not displayed. Because the virtual keys and the state icons only need to display the outlines, and the requirement of a user on the display effect is not high, the fingerprints are identified through the first area, and meanwhile the virtual keys, the state icons and the like can be displayed through the first area, so that the display panel is fully utilized.

Description

Display device and electronic apparatus
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a display device and an electronic apparatus.
Background
With the diversification of encryption/decryption operations of the intelligent terminal, everyone who owns the fingerprint has the fingerprint, but the fingerprint identification module is more and more generally integrated in the intelligent terminal because the fingerprint identification module is more and more emphasized due to the different attributes of the people.
At present, fingerprint identification modules in intelligent terminals (such as mobile phones) mainly comprise two types, namely a back side and a front side, of the intelligent terminal, the fingerprint identification module arranged on the back side is generally located in the middle upper region of a shell, and the fingerprint identification module arranged on the front side is integrated with an HOME key.
However, in any of the above manners, the fingerprint identification module needs to be manufactured separately and then set in the intelligent terminal, and the manufacturing process is complicated.
Disclosure of Invention
The present disclosure provides a display device and an electronic apparatus to solve the disadvantages of the related art.
According to a first aspect of embodiments of the present disclosure, there is provided a display device including:
a display panel;
a fingerprint sensor disposed at a first region of the display panel;
the display panel comprises a first area and a second area, wherein the second area is used for displaying images except the first area in the display panel, the first area is used for identifying fingerprints, and the first area is also used for displaying virtual keys and/or state icons.
Optionally, the first region is located at an edge of the display panel.
Optionally, the display panel comprises a curved surface region, and the first region is located in or coincides with the curved surface region.
Optionally, the display device further comprises:
the display panel is electrically connected with the first control chip, and when a first area provided with the fingerprint sensor and a second area not provided with the fingerprint sensor receive signals displaying the same gray scale, the gray scale of the first area and/or the second area is adjusted according to the signals, the light transmittance of the first area and the light transmittance of the second area, so that the gray scales displayed by the first area and the second area are the same.
Optionally, the first control chip is configured to increase the brightness of light passing through the first area and/or decrease the brightness of light passing through the second area, so that the gray scales displayed in the first area and the second area are the same.
Optionally, when the gray scale corresponding to the signal is a highest gray scale that can be displayed by the display panel, the first control chip is configured to reduce the brightness of light passing through the second region, so that the gray scales displayed in the first region and the second region are the same.
Optionally, the fingerprint sensor comprises at least one of:
photoelectric sensors, capacitive sensors, ultrasonic sensors.
Optionally, when the fingerprint sensor is a photoelectric sensor, the display panel includes an array substrate, and the array substrate includes:
a substrate;
a thin film transistor disposed at one side of the substrate;
the photoelectric sensor is arranged on one side of the substrate and used for identifying fingerprints;
and the passivation layer is arranged on one sides of the thin film transistor and the photoelectric sensor far away from the substrate.
Optionally, the array substrate further includes:
and the flat layer is arranged on one side of the passivation layer, which is far away from the thin film transistor.
Optionally, the display panel further comprises:
the color film substrate is arranged opposite to the array substrate;
and a black matrix is arranged in the color film substrate, and the photoelectric sensor is arranged opposite to the black matrix.
Optionally, the display device further includes:
the backlight module is arranged on one side of the array substrate, which is far away from the color film substrate;
and the touch module is arranged on one side of the color film substrate, which is far away from the array substrate, or between the array substrate and the color film substrate.
Optionally, the display device further includes:
the second control chip is electrically connected with the thin film transistor, the photoelectric sensor and the touch module,
when the touch module senses a touch signal at a position corresponding to the photoelectric sensor, a control signal is transmitted to the second control chip to control the photoelectric sensor and the thin film transistor corresponding to the photoelectric sensor to be started.
Optionally, the display device further includes:
the thin film transistor is electrically connected with the data line and the pixel electrode, and the data line transmits a data signal to the pixel electrode through the thin film transistor;
when the second control chip receives the control signal, the data signal transmitted by the data line corresponding to the photoelectric sensor is adjusted, so that the light emitted from the backlight module passes through the display panel and then is monochromatic light or white light.
Optionally, the display device further includes:
the state detection unit is configured to detect the working state of the display device and transmit the detected working state to the touch module;
when the touch module senses a touch signal at a position corresponding to the photoelectric sensor, whether the display device is in a state of a fingerprint to be identified is determined, and if the display device is in the state of the fingerprint to be identified, a control signal is transmitted to the control chip.
According to a second aspect of the embodiments of the present disclosure, there is provided an electronic apparatus including:
a processor;
a memory for storing processor-executable instructions;
wherein the electronic device further comprises a display device, the display device comprising:
a display panel;
a fingerprint sensor disposed at a first region of the display panel;
the display panel comprises a first area and a second area, wherein the second area is used for displaying images except the first area in the display panel, the first area is used for identifying fingerprints, and the first area is also used for displaying virtual keys and/or state icons.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
as can be seen from the above embodiments, although the light transmittance of the first area is affected by the fingerprint sensor, the area is still transparent, that is, can still display content, so that the content such as virtual keys and status icons can be displayed through the area, and the image displayed in the second area is not displayed. Because the virtual keys and the state icons only need to display the outlines, and the requirement of a user on the display effect is not high, the fingerprints are identified through the first area, and meanwhile the virtual keys, the state icons and the like can be displayed through the first area, so that the display panel is fully utilized.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1A is a schematic structural diagram illustrating a display device according to an exemplary embodiment.
Fig. 1B is a schematic diagram illustrating a structure of a display device according to an exemplary embodiment.
Fig. 2 is a schematic structural diagram illustrating an array substrate according to an exemplary embodiment.
FIG. 3 is a schematic diagram illustrating fingerprint recognition according to an exemplary embodiment.
Fig. 4 is a schematic structural view illustrating another array substrate according to an exemplary embodiment.
Fig. 5 is a schematic structural diagram illustrating a display panel according to an exemplary embodiment.
Fig. 6 is a schematic structural diagram illustrating another display panel according to an exemplary embodiment.
Fig. 7 is a schematic flow chart illustrating a method of fabricating an array substrate according to an exemplary embodiment.
Fig. 8 is a schematic flow chart illustrating another method for fabricating an array substrate according to an exemplary embodiment.
Fig. 9 is a block diagram illustrating a display apparatus according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Fig. 1A is a schematic structural diagram illustrating a display device according to an exemplary embodiment. Fig. 1B is a schematic diagram illustrating a structure of a display device according to an exemplary embodiment. As shown in fig. 1A and 1B, taking the display device as a mobile phone as an example, the display device includes:
a display panel;
the fingerprint sensor is arranged in the first area of the display panel and used for identifying a fingerprint;
the display panel comprises a first area and a second area, wherein the second area is used for displaying images except the first area in the display panel, the first area is used for identifying fingerprints, and the first area is also used for displaying virtual keys and/or state icons.
The positions, shapes, areas, and the like of the first region and the second region shown in fig. 1A and 1B are merely illustrative, and there may be regions where the first region and the second region overlap, and the first region and the second region may be actually provided as necessary.
In one embodiment, as shown in FIG. 1A, the virtual keys displayed in the first area may include at least one of:
menu key, return key, Home key.
For example, in the first region shown in fig. 1A, the menu key may be located on the left side of the first region, the return key may be located on the right side of the first region, and the Home key may be located in the middle of the first region, so as to meet the operation habit of the user and improve the operation experience.
In one embodiment, as shown in FIG. 1B, the status icons displayed in the first area may include at least one of:
time, power, signal strength.
For example, in the first area shown in fig. 1B, the first area may be provided at the position of a status bar in the related art and display status icons of time, 4G signal strength, power amount, and the like.
In one embodiment, the fingerprint sensor may be a photoelectric sensor, a capacitive sensor, or an ultrasonic sensor. However, since any sensor is disposed in the display panel, the transmittance of the area where the sensor is located is affected, so that when an image is displayed in the area, the display effect of the sensor is different from that of the second area, thereby affecting the viewing effect.
Although the light transmittance of the first area is affected by the fingerprint sensor, the area is still transparent, that is, the content can be displayed, so that the content such as virtual keys and status icons can be displayed through the area, but the image displayed in the second area is not displayed. Because the virtual keys and the state icons only need to display the outlines, and the requirement of a user on the display effect is not high, the fingerprints are identified through the first area, and meanwhile the virtual keys, the state icons and the like can be displayed through the first area, so that the display panel is fully utilized.
Optionally, the first region is located at an edge of the display panel.
In one embodiment, the first region is disposed at an edge of the display panel, such as a lower edge shown in fig. 1A, so that the first region is prevented from dividing the second region, which can reduce the complexity of wiring of the content of the display panel, and prevent the image displayed by the second region from being divided by the first region.
Optionally, the display panel comprises a curved surface region, and the first region is located in or coincides with the curved surface region.
In one embodiment, where the display panel includes a curved surface region, for example, the curved surface region is the right side of the display panel shown in FIG. 1A. The display effect of the curved surface area is poor relative to that of the plane area, and the area of the general curved surface area is small, so that the first area is also arranged in the curved surface area or is superposed with the curved surface area, the occupation of the first area on the plane area of the display panel can be reduced, and the display panel can display larger plane images.
Optionally, the display device further includes:
the display panel is electrically connected with the first control chip, and when a first area provided with the fingerprint sensor and a second area not provided with the fingerprint sensor receive signals displaying the same gray scale, the gray scale of the first area and/or the second area is adjusted according to the signals, the light transmittance of the first area and the light transmittance of the second area, so that the gray scales displayed by the first area and the second area are the same. In one embodiment, the fingerprint sensor may be a photoelectric sensor, a capacitive sensor, or an ultrasonic sensor, but any sensor is disposed in an active area of the display panel, and will affect the light transmittance of the area where the fingerprint sensor is located, so when the first area and the second area receive signals displaying the same gray scale, if the two areas are processed identically, the gray scale displayed in the first area will be lower than the gray scale displayed in the second area due to the fingerprint sensor in the first area, thereby affecting the viewing effect.
For example, the light transmittance of the second region is 10%, and the light transmittance of the first region is lower than that of the second region, for example, 5%. If the signals received by the first and second regions are display gray scales of 64, and if the gray scales of the first and second regions are adjusted only according to the received signals, the gray scale displayed by the adjusted second region is 64, the gray scale displayed by the first region is 1/2, i.e., 32, of the second region because the light transmittance of the first region is 1/2 of the light transmittance of the second region.
In one embodiment, after receiving a signal displaying the same gray scale, the gray scales of the first region and the second region can be adjusted according to the signal and three parameters of the light transmittance of the first region and the light transmittance of the second region. Still taking the light transmittance of the second region as 10%, the first region as 5%, and the same gray scale to be displayed as 64 as an example, the second region may be adjusted only according to the signal, that is, the gray scale of the second region is adjusted to 64, and for the first region, in order to adjust the gray scale displayed by the first region to be consistent with the gray scale displayed by the second region, the brightness of the light passing through the first region may be increased to be 2 times of the brightness of the light passing through the second region, so that the brighter light can display the same gray scale as the second region when passing through the first region with lower light transmittance, thereby ensuring the viewing effect of the user.
Optionally, the first control chip is configured to increase the brightness of light passing through the first area and/or decrease the brightness of light passing through the second area, so that the gray scales displayed in the first area and the second area are the same.
In one embodiment, the brightness of the light passing through the first region may be increased only, for example, the brightness of the light passing through the first region is adjusted to 2 times the brightness of the light passing through the second region as in the above-described embodiments.
In one embodiment, the brightness of the light passing through the second region may be reduced only, for example, the brightness of the light passing through the second region is adjusted to 1/2 of the brightness of the light passing through the first region under the conditions of the above-described embodiments. In this case, although the gray scales displayed in the first region and the second region are lower than the gray scale required to be displayed by the signal, the gray scales displayed in the first region and the second region can be ensured to be the same, the uniformity of the viewing effect can be ensured, and the power consumption of the display device can be reduced to a certain extent.
In one embodiment, for example, when the difference between the light transmittance of the first region and the light transmittance of the second region is greater than a predetermined difference (which may be set as required, for example, 30%), it is difficult to adjust the brightness of light passing through a certain region alone, for example, it is necessary to increase the brightness of light passing through the first region by a relatively large margin or decrease the brightness of light passing through the second region by a relatively large margin, so that the brightness of light passing through the first region can be increased by a relatively small margin and the brightness of light passing through the second region can be decreased by a relatively small margin, so as to easily make the gray scales displayed in the first region and the second region the same.
Optionally, when the gray scale corresponding to the signal is a highest gray scale that can be displayed by the display panel, the first control chip is configured to reduce the brightness of light passing through the second region, so that the gray scales displayed in the first region and the second region are the same.
In one embodiment, for example, the gray scale that can be displayed by the display panel ranges from 0 to 255, and if the gray scale corresponding to the signal is 255, the gray scale displayed in the first region cannot reach 255 no matter how the brightness of the light passing through the first region is increased, so that the gray scales displayed in the first region and the second region can be the same by decreasing the brightness of the light passing through the second region.
In the above embodiment, the manner of increasing or decreasing the brightness of light passing through a certain region may be to adjust the voltage of the pixel electrode corresponding to the region, so as to adjust the degree of deflection of the liquid crystal corresponding to the region, thereby changing the brightness of light passing through the region; or adjusting the brightness of the light source corresponding to the region in the backlight module.
Optionally, the fingerprint sensor comprises at least one of:
photoelectric sensors, capacitive sensors, ultrasonic sensors.
In one embodiment, the photoelectric sensor can identify the fingerprint by receiving light reflected by the finger, the ultrasonic sensor can identify the fingerprint by receiving ultrasonic waves reflected by the finger, and the capacitive sensor can generate different capacitance change values according to different contact positions of the ridges and the valleys of the fingerprint to identify the fingerprint.
Fig. 2 is a schematic structural diagram illustrating an array substrate according to an exemplary embodiment. As shown in fig. 2, the array substrate includes:
a substrate 1.
In one embodiment, the material of the substrate may be glass. When the array substrate is suitable for a flexible display device, the substrate may be made of a flexible resin.
And the thin film transistor 2 is arranged on one side of the substrate 1.
In one embodiment, as shown in fig. 2, the thin film transistor 2 may include a gate electrode 21, an active layer 22, a source electrode 23, a drain electrode 24, and the like, and a gate insulating layer 5 may be further disposed between the gate electrode 21 and the active layer 22.
And a photo sensor 3 disposed at one side of the substrate 1 for recognizing a fingerprint.
In one embodiment, the photosensor may be formed on the substrate using the same process as the thin film transistor, for example, by a patterning process.
In one embodiment, the structure of the photosensor is not limited to the structure shown in fig. 2, the position thereof is not limited to the position shown in fig. 2, and it is also not limited to the direct formation on the substrate shown in fig. 2. For example, the photosensor may be formed over the thin film transistor, that is, formed at the time of or after the formation of the source and drain electrodes, in which case there may be an overlapping region of the first region and the second region.
FIG. 3 is a schematic diagram illustrating fingerprint recognition according to an exemplary embodiment. As shown in fig. 3, the photoelectric sensor may be a photodiode, a phototriode, a phototransistor, or the like, when a finger of a user presses on the surface of the screen, light emitted from the light source may irradiate on the fingerprint of the finger through the prism or the like, the ridge contacts the screen due to the difference in heights of the valley and the ridge of the fingerprint, and a gap filled with air exists between the valley and the screen, so that the light reflected after the light irradiates on the valley and the ridge is also different, and further, the light incident on the photoelectric sensor through the lens is also different.
And the passivation layer 4 is arranged on one side of the thin film transistor 2 and the photoelectric sensor 3, which is far away from the substrate 1.
In one embodiment, the passivation layer may be made of an insulating material, such as silicon oxide, silicon nitride, etc.
In one embodiment, the photosensor may be integrated in the array substrate by disposing the photosensor on the base of the array substrate. In the display device manufactured by the array substrate, the finger can be placed at the position corresponding to the second area of the array substrate to perform fingerprint identification, a fingerprint identification sensor is not required to be additionally arranged in the display device, the manufacturing process is simplified, and the stability and the integration level of the whole structure are improved.
Fig. 4 is a schematic structural view illustrating another array substrate according to an exemplary embodiment. As shown in fig. 4, on the basis of the embodiment shown in fig. 2, the array substrate further includes:
and the flat layer 6 is arranged on one side of the passivation layer 4 far away from the thin film transistor 2.
In one embodiment, the passivation layer 4 shown in fig. 2 is ideal, and its upper surface is relatively flat. In fact, since the tft and the photosensor under the passivation layer 4 are protruded with respect to the substrate, the upper surface of the passivation layer 4 is actually non-flat as shown in fig. 4. By further forming a planar layer 6 on the passivation layer 4, the upper surface of the overall structure can be ensured to be relatively flat for further forming other structures thereon.
Optionally, the photosensor comprises at least one of:
photodiode, phototriode, phototransistor.
The user can select the photodiode and/or the phototriode as the photoelectric sensor to sense the fingerprint according to actual needs.
The present disclosure further provides a display panel including the array substrate.
Fig. 5 is a schematic structural diagram illustrating a display panel according to an exemplary embodiment. As shown in fig. 5, which schematically illustrates the structures of the thin film transistor 2 and the photosensor 3, the display panel includes the array substrate, and further includes:
the color film substrate is arranged opposite to the array substrate;
a black matrix 7 is arranged in the color film substrate, and the photoelectric sensor 3 is arranged opposite to the black matrix 7;
and the liquid crystal layer 8 is arranged between the array substrate and the color film substrate.
In one embodiment, the color filter substrate includes, in addition to the black matrices, color resistance regions disposed between the black matrices, and each color resistance region is filled with a color resistance material of a corresponding color, for example, the color filter substrate may include a red color resistance region, a green color resistance region, a blue color resistance region, and further may include a white color resistance region.
Fig. 6 is a schematic structural diagram illustrating another display panel according to an exemplary embodiment. As shown in fig. 6, the display panel may include a plurality of data lines and a plurality of gate lines, the gate lines and the data lines crossing to define a plurality of sub-pixels, wherein the character R, G, B indicates that the sub-pixels respectively correspond to red, green and blue sub-pixels. In the structure shown in fig. 5, a black matrix (not shown in fig. 6) may be disposed at positions where the data lines, the gate lines, and/or the thin film transistors are located, and accordingly, the photo sensors (not shown in fig. 6) may also be disposed at these positions so as to be shielded by the black matrix.
In one embodiment, the black matrix may be disposed corresponding to the thin film transistor to reduce an influence of a scanning signal in a gate electrode of the thin film transistor on the liquid crystal, in which case, the photosensor may be disposed above the thin film transistor so that positions of the thin film transistor, the photosensor, and the black matrix correspond. In one embodiment, although the photo sensor may be made of a transparent material, the photo sensor may still reduce the light transmittance of its corresponding region, thereby affecting the aperture ratio of the display panel. Through setting up photoelectric sensor and black matrix correspondingly, because the existence of black matrix makes its region that corresponds opaque, consequently set up photoelectric sensor in this region and can not further reduce the luminousness yet to set up photoelectric sensor for other positions, can improve display panel's aperture ratio.
Optionally, the display device further includes:
and the backlight module is arranged on one side of the array substrate, which is far away from the color film substrate.
In one embodiment, the backlight module may include a light guide plate and a light bar disposed at one side of the light guide plate, wherein light emitted from the light bar enters the light guide plate and is refracted and reflected by the light guide plate to form a surface light source to be emitted to the display panel.
And the touch module is arranged on one side of the color film substrate, which is far away from the array substrate, or between the array substrate and the color film substrate.
In one embodiment, the touch module can be a self-inductance capacitor or a mutual-inductance capacitor. When the touch module is disposed on a side of the color filter substrate away from the array substrate, the touch module may be an OGS structure (for example, the touch module is formed on the protective glass on the outer side of the color filter substrate). When the touch module is disposed between the array substrate and the color filter substrate, the structure of the touch module may be an On Cell structure (for example, the touch module is disposed between a polarizer and a substrate On one side of the color filter substrate), or an In Cell structure (for example, the touch module is disposed On the array substrate). The user can select the specific structure of the touch module according to the requirement.
Optionally, the display device further includes:
the second control chip is electrically connected with the thin film transistor, the photoelectric sensor and the touch module,
when the touch module senses a touch signal at a position corresponding to the photoelectric sensor, a control signal is transmitted to the second control chip to control the photoelectric sensor and the thin film transistor corresponding to the photoelectric sensor to be started.
In one embodiment, the second control chip may include a first integrated circuit, a second integrated circuit, and a signal generator electrically connected to the two integrated circuits, respectively.
The signal generator is electrically connected to the touch module, and generates a start signal and sends the start signal to the first integrated circuit and the second integrated circuit when receiving a control signal from the touch module. The first integrated circuit may be electrically connected to the thin film transistor through the gate line, and transmit a scan signal to a gate electrode of the thin film transistor when receiving a start signal, so that the thin film transistor is started. And when the second integrated circuit receives the starting signal, the photoelectric sensor can be controlled to start through the wiring connected with the photoelectric sensor. Therefore, when the user touches the position corresponding to the photoelectric sensor, the identification operation of the fingerprint of the user is triggered.
Optionally, the display device further includes:
the thin film transistor is electrically connected with the data line and the pixel electrode, and the data line transmits a data signal to the pixel electrode through the thin film transistor;
when the second control chip receives the control signal, the data signal transmitted by the data line corresponding to the photoelectric sensor is adjusted, so that the light emitted from the backlight module passes through the display panel and then is monochromatic light or white light.
In one embodiment, the data line may be electrically connected to a source electrode of the thin film transistor, and the pixel electrode may be electrically connected to a drain electrode of the thin film transistor through a via hole in the passivation layer, so that when the thin film transistor is activated (which may also be referred to as turned on), a data signal on the data line may be transmitted to the pixel electrode through the source electrode, the active layer, and the drain electrode.
In one embodiment, the light sensed by the photo-sensor is the light incident from the light guide plate to the display panel, and is emitted to the finger through the display panel, and then reflected by the finger to the photo-sensor. The photoelectric sensor generates different currents for different colors of light, so that when light emitted from the display panel to the finger is mixed color light of non-white light, the colors of reflected light received by different areas of the photoelectric sensor are different due to light splitting action of materials in the display panel, and the photoelectric sensor generates unstable current to influence a detection result.
When the light emitted from the display panel to the finger is white light, the light finally reaching the photosensor is mixed into white light even by the light-splitting action of the material in the display panel. When the light emitted from the display panel to the finger is monochromatic light, the light cannot be split in the transmission process, and the light finally reaching the photoelectric sensor is the monochromatic light.
The control chip can adjust the voltage of the pixel electrode by adjusting the data signal when receiving the control signal so as to change the deflection degree of the liquid crystal at the position of the photoelectric sensor, so that the red sub-pixel, the green sub-pixel and the blue sub-pixel at the position are all opened, white light which is incident into the display panel from the backlight module can be all emitted and still be white light after penetrating through the display panel, light reflected by fingers of a user is also white light, and the light which is incident into the photoelectric sensor is also white light; or only the monochrome sub-pixel is turned on, for example, the red sub-pixel is turned on, so that only the white light in the area can pass through, but the white light is filtered by the red color resistance material, only the red light is left to be emitted, so that the light emitted out of the display panel is the monochrome red light, the light reflected by the finger of the user is also the red light, and the light incident to the photoelectric sensor is also the white light.
Optionally, the display device further includes:
the state detection unit is configured to detect the working state of the display device and transmit the detected working state to the touch module;
when the touch module senses a touch signal at a position corresponding to the photoelectric sensor, whether the display device is in a state of a fingerprint to be identified is determined, and if the display device is in the state of the fingerprint to be identified, a control signal is transmitted to the control chip.
Because the photoelectric sensor is disposed in the array substrate, that is, located in the effective display area of the display panel, when the user performs the non-fingerprint identification operation, the user may click on the area corresponding to the photoelectric sensor, and in this case, if the photoelectric sensor is activated, the electric quantity is wasted.
In one embodiment, by further detecting the working state of the display device, when the user clicks the corresponding position of the photoelectric sensor, whether the display device is in the state of the fingerprint to be identified can be determined, wherein the state of the fingerprint to be identified can include a screen locking state, a fingerprint payment verification state and the like, and when the display device is in the state, the operation that the user clicks the corresponding position of the photoelectric sensor can be determined to be fingerprint identification, and then the photoelectric sensor is restarted, so that the waste of electric quantity and the loss caused by switching on and off the photoelectric sensor can be effectively avoided.
Corresponding to the embodiment of the array substrate, the disclosure also provides an embodiment of a manufacturing method of the array substrate.
Fig. 7 is a schematic flow chart illustrating a method of fabricating an array substrate according to an exemplary embodiment. As shown in fig. 7, the manufacturing method includes the following steps:
in step S71, a thin film transistor is formed in a first region of one side of a substrate through a patterning process.
In step S72, a photosensor for recognizing a fingerprint is formed through a patterning process at a second area of one side of the substrate.
In step S73, a passivation layer is formed on the thin film transistor and the photosensor on a side away from the substrate.
In one embodiment, if the photo sensor is also formed on the substrate, the steps S61 and S62 may be performed simultaneously, that is, the photo sensor is formed simultaneously with the formation of the thin film transistor. If the photo sensor is formed on the thin film transistor, step S61 may be performed first, and then step S62 may be performed, and an insulating layer may be further disposed on the thin film transistor to insulate the source and the drain of the thin film transistor from the photo sensor.
Fig. 8 is a schematic flow chart illustrating another method for fabricating an array substrate according to an exemplary embodiment. As shown in fig. 8, on the basis of the embodiment shown in fig. 7, the manufacturing method further includes:
in step S74, a planarization layer is formed on a side of the passivation layer away from the thin film transistor.
With regard to the manufacturing method in the above embodiments, the detailed manner of each step has been described in detail in the embodiments related to the array substrate, and will not be described in detail here.
Fig. 9 is a block diagram illustrating a display device 900 according to an exemplary embodiment. For example, the apparatus 900 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.
Referring to fig. 9, apparatus 900 may include one or more of the following components: processing component 902, memory 904, power component 908, multimedia component 908, audio component 910, input/output (I/O) interface 912, sensor component 914, and communication component 918, further comprising a display device comprising: a display panel; a fingerprint sensor disposed at a first region of the display panel; the display panel comprises a first area and a second area, wherein the second area is used for displaying images except the first area in the display panel, the first area is used for identifying fingerprints, and the first area is also used for displaying virtual keys and/or state icons.
The processing component 902 generally controls overall operation of the device 900, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. Processing component 902 may include one or more processors 920 to execute instructions. Further, processing component 902 can include one or more modules that facilitate interaction between processing component 902 and other components. For example, the processing component 902 can include a multimedia module to facilitate interaction between the multimedia component 908 and the processing component 902.
The memory 904 is configured to store various types of data to support operation at the apparatus 900. Examples of such data include any application program for operating on device 900, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 904 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The power supply component 908 provides power to the various components of the device 900. The power components 908 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 900.
The multimedia component 908 comprises a screen providing an output interface between the device 900 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 908 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 900 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 910 is configured to output and/or input audio signals. For example, audio component 910 includes a Microphone (MIC) configured to receive external audio signals when apparatus 900 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 904 or transmitted via the communication component 918. In some embodiments, audio component 910 also includes a speaker for outputting audio signals.
I/O interface 912 provides an interface between processing component 902 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor component 914 includes one or more sensors for providing status assessment of various aspects of the apparatus 900. For example, sensor assembly 914 may detect an open/closed state of device 900, the relative positioning of components, such as a display and keypad of device 900, the change in position of device 900 or a component of device 900, the presence or absence of user contact with device 900, the orientation or acceleration/deceleration of device 900, and the change in temperature of device 900. The sensor assembly 914 may include a proximity sensor configured to detect the presence of a nearby object in the absence of any physical contact. The sensor assembly 914 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 914 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 918 is configured to facilitate communications between the apparatus 900 and other devices in a wired or wireless manner. The apparatus 900 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 918 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 918 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an example embodiment, the apparatus 900 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic components.
In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as memory 904 comprising instructions, executable by processor 920 of device 900, is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (7)

1. A display device, comprising:
a display panel including a display area including a first area and a second area other than the first area;
the fingerprint sensor is arranged in the first area, and the first area is light-transmitting;
the second area is used for displaying images, the first area is used for identifying fingerprints, and the first area is also used for displaying virtual keys and/or state icons;
the display panel comprises a display panel, a first control chip and a second control chip, wherein the display panel is electrically connected with the display panel, and when a first area provided with a fingerprint sensor and a second area not provided with the fingerprint sensor receive signals displaying the same gray scale, the gray scale of the first area and/or the second area is/are adjusted according to the signals, the light transmittance of the first area and the light transmittance of the second area, so that the gray scales displayed by the first area and the second area are the same;
the first area is located at the edge of the display panel;
the fingerprint sensor is photoelectric sensor, display panel includes the array substrate, the array substrate includes:
a substrate;
a thin film transistor disposed at one side of the substrate;
the photoelectric sensor is arranged on one side of the substrate and used for identifying fingerprints, and the photoelectric sensor is directly formed on the substrate;
the passivation layer is arranged on one side, far away from the substrate, of the thin film transistor and the photoelectric sensor;
the display panel further includes:
the color film substrate is arranged opposite to the array substrate;
a black matrix is arranged in the color film substrate, and the photoelectric sensor is arranged opposite to the black matrix;
the backlight module is arranged on one side of the array substrate, which is far away from the color film substrate;
the touch module is arranged on one side of the color film substrate, which is far away from the array substrate, or between the array substrate and the color film substrate;
the second control chip is electrically connected with the thin film transistor, the photoelectric sensor and the touch module,
when the touch module senses a touch signal at a position corresponding to the photoelectric sensor, transmitting a control signal to the second control chip so as to control the photoelectric sensor and the thin film transistor corresponding to the photoelectric sensor to be started;
the thin film transistor is electrically connected with the data line and the pixel electrode, and the data line transmits a data signal to the pixel electrode through the thin film transistor;
when the second control chip receives the control signal, the data signal transmitted by the data line corresponding to the photoelectric sensor is adjusted, so that the light emitted from the backlight module passes through the display panel and then is monochromatic light or white light.
2. A display device as claimed in claim 1, wherein the display panel comprises a curved surface region, the first region being located in or coinciding with the curved surface region.
3. The display device according to claim 1, wherein the first control chip is configured to increase the brightness of the light passing through the first region and/or decrease the brightness of the light passing through the second region, so that the gray scales displayed in the first region and the second region are the same.
4. The display device according to claim 3, wherein when the gray scale corresponding to the signal is a highest gray scale that can be displayed by the display panel, the first control chip is configured to reduce the brightness of the light passing through the second area, so that the gray scales displayed in the first area and the second area are the same.
5. The display device according to claim 1, wherein the array substrate further comprises:
and the flat layer is arranged on one side of the passivation layer, which is far away from the thin film transistor.
6. The display device according to claim 1, further comprising:
the state detection unit is configured to detect the working state of the display device and transmit the detected working state to the touch module;
when the touch module senses a touch signal at a position corresponding to the photoelectric sensor, whether the display device is in a state of a fingerprint to be identified is determined, and if the display device is in the state of the fingerprint to be identified, a control signal is transmitted to the control chip.
7. An electronic apparatus characterized by comprising the display device according to claim 1.
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