CN116884047A - Display screen and electronic equipment - Google Patents
Display screen and electronic equipment Download PDFInfo
- Publication number
- CN116884047A CN116884047A CN202310923698.3A CN202310923698A CN116884047A CN 116884047 A CN116884047 A CN 116884047A CN 202310923698 A CN202310923698 A CN 202310923698A CN 116884047 A CN116884047 A CN 116884047A
- Authority
- CN
- China
- Prior art keywords
- fingerprint
- display
- pixels
- unlocking
- driving circuit
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims description 29
- 230000008569 process Effects 0.000 claims description 23
- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 15
- 229920001621 AMOLED Polymers 0.000 description 14
- 230000006870 function Effects 0.000 description 14
- 101100134058 Caenorhabditis elegans nth-1 gene Proteins 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 5
- 239000010409 thin film Substances 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 238000003491 array Methods 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- 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
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
-
- 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
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Security & Cryptography (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Signal Processing (AREA)
- Optics & Photonics (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The application provides a display screen and an electronic device, comprising: a first display region and a second display region, wherein the first display region includes a plurality of first pixels, and the second display region includes a plurality of second pixels; a display driving circuit for driving the first pixels to display; a fingerprint identification driving circuit for driving the second pixels to emit light when the fingerprint is unlocked; the fingerprint unlocking detection module is used for detecting whether a user triggers fingerprint unlocking or not; and the controller is used for controlling the fingerprint identification driving circuit to control the second pixels to emit light simultaneously or controlling the display driving circuit to control the first pixels to display and controlling the fingerprint identification driving circuit to control the second pixels to emit light simultaneously when the fingerprint unlocking detection module detects that the user triggers fingerprint unlocking. Therefore, transverse lines in the collected optical fingerprints are avoided, the generation quality of fingerprint images is improved, and the accuracy and success rate of fingerprint unlocking are further improved.
Description
The application relates to a division application of Chinese application date 2019, 12 month 03, application number 201911220024.7, and the name of the division application is display screen and electronic equipment.
Technical Field
The present application relates to the field of panel display technologies, and in particular, to a display screen and an electronic device.
Background
With the development of electronic technology, the display screen of the electronic device gradually develops to a comprehensive screen, and the screen ratio is higher and higher, so that the capacitive fingerprint module of the current mainstream is placed everywhere, and the under-screen optical fingerprint is generated.
However, the inventor finds that when fingerprint identification is performed by using an on-screen fingerprint identification technology, the phenomena of unclear imaging and poor quality of generated fingerprint images exist, which results in lower accuracy and success rate of fingerprint identification.
Disclosure of Invention
The embodiment of the application provides a display screen which is used for solving the technical problems that in the related art, when fingerprint identification is carried out through an under-screen fingerprint identification technology, imaging is unclear, and the quality of a generated fingerprint image is poor, so that the accuracy and success rate of the fingerprint identification are affected.
To this end, an embodiment of a first aspect of the present application proposes a display screen, including: a first display region and a second display region, wherein the first display region includes a plurality of first pixels and the second display region includes a plurality of second pixels; a display driving circuit that drives the plurality of first pixel displays; a fingerprint identification driving circuit for driving the plurality of second pixels to emit light when fingerprint unlocking is performed; the fingerprint unlocking detection module is used for detecting whether a user triggers fingerprint unlocking or not; and the controller is used for controlling the fingerprint identification driving circuit to control the second pixels to emit light simultaneously or controlling the display driving circuit to control the first pixels to display and controlling the fingerprint identification driving circuit to control the second pixels to emit light simultaneously when the fingerprint unlocking detection module detects that the user triggers fingerprint unlocking.
An embodiment of a second aspect of the present application proposes an electronic device comprising a display screen according to an embodiment of the first aspect.
The technical scheme disclosed by the application has the following beneficial effects:
through when the fingerprint is unlocked, a plurality of pixels that control fingerprint unblock region included shines simultaneously, and a plurality of pixels that control other regions include show, have avoided appearing the cross-stripe in the optical fingerprint of gathering, have improved the generation quality of fingerprint image, and then have improved fingerprint identification's rate of accuracy and success rate.
Drawings
The foregoing and/or additional aspects and advantages of the application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a fingerprint recognition module in the related art;
FIG. 2 is a schematic diagram of a fingerprint with transverse lines collected by a fingerprint identification module in the related art;
FIG. 3 is a schematic diagram of a display screen according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a pixel driving circuit according to an embodiment of the application;
FIG. 5 is a timing diagram illustrating operation of a single pixel display driver circuit per frame according to one embodiment of the present application;
FIG. 6 is a schematic diagram of a refresh process of an AMOLED screen display according to an embodiment of the present application;
FIG. 7 is a schematic diagram of the picture brightness variation during AMPLED picture refresh according to one embodiment of the present application;
FIG. 8 is a schematic diagram of a fingerprint identification driving circuit according to an embodiment of the present application;
FIG. 9 is a schematic diagram of a fingerprint identification driving circuit according to another embodiment of the present application;
FIG. 10 is a schematic diagram of a fingerprint identification driving circuit according to another embodiment of the present application;
FIG. 11 is a schematic diagram of an electronic device according to an embodiment of the application;
fig. 12 is a schematic structural diagram of an electronic device according to another embodiment of the present application.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application.
At present, the under-screen fingerprint recognition is mainly applied to an Organic Light-Emitting Diode (OLED) screen, the structure of a fingerprint recognition module is shown in fig. 1, when fingerprint recognition is performed, the OLED screen itself is used as a Light source to emit Light, the Light emitted by the OLED screen itself is reflected by a finger, and the reflected Light is imaged in a Complementary Metal Oxide Semiconductor (CMOS) sensor of the fingerprint recognition module through a cover plate, so that fingerprint recognition is performed through information of fingerprint imaging.
However, the inventor finds that when fingerprint identification is performed by using the on-screen fingerprint identification technology, the phenomena of unclear imaging and poor quality of generated fingerprint images exist, and particularly, the transverse phenomenon as shown in fig. 2 is easy to occur in the optical fingerprint collected by the fingerprint identification module, which results in lower accuracy and success rate of fingerprint identification.
The application provides a display screen capable of avoiding transverse lines in optical fingerprints acquired by a fingerprint identification module, so as to improve the generation quality of fingerprint images and further improve the accuracy and success rate of fingerprint unlocking.
The display screen and the electronic device according to the embodiments of the present application are described below with reference to the drawings.
The following describes a display screen provided in an embodiment of the present application with reference to fig. 3. Fig. 3 is a schematic structural diagram of a display screen according to an embodiment of the present application.
As shown in fig. 3, the display screen 1 of the present application may include:
a first display area 11 and a second display area 12, wherein the first display area 11 includes a plurality of first pixels and the second display area 12 includes a plurality of second pixels;
a display driving circuit 13 that drives the display of the plurality of first pixels;
a fingerprint identification driving circuit 14 for driving the plurality of second pixels to emit light when fingerprint unlocking is performed;
the fingerprint unlocking detection module 15 is used for detecting whether a user triggers fingerprint unlocking;
the controller 16 is configured to control the fingerprint identification driving circuit 14 to control the plurality of second pixels to emit light simultaneously, or control the display driving circuit 13 to control the plurality of first pixels to display, and control the fingerprint identification driving circuit 14 to control the plurality of second pixels to emit light simultaneously when the fingerprint unlocking detection module 15 detects that the user triggers the fingerprint unlocking.
Specifically, the display screen provided by the embodiment of the application can be any display screen capable of realizing fingerprint identification under the screen, and the application takes a mainstream Active Matrix organic light emitting diode panel (Active Matrix/Organic Light Emitting Diode), namely an AMOLED screen as an example for explanation. The display screen provided by the embodiment of the application can be configured in any electronic equipment such as a smart phone, a notebook computer, a wearable device and the like, and the application is not limited to the above.
The second display area 12 is a fingerprint unlocking area in the display screen, and the first display area 11 is other display areas of the display screen except the second display area.
In particular, the second display area 12 may be located in any area of the display screen, such as the bottom, middle, etc., of the display screen, as the application is not limited in this regard. The shape of the second display area 12 may be any shape such as a circle, an ellipse, a square, etc., which is not limited in the present application. In general, in order to make the area of the first display area 11 as large as possible to display a screen in a display area as large as possible while the fingerprint is unlocked, the second display area 12 may be set to be a circle closest to the shape of a human fingerprint. The size of the second display area 12 may be set as required, for example, a certain number of human fingerprint images may be acquired, and the largest area of the actual area occupied by the fingerprints is set as the area size of the second display area 12. In addition, the number of the second pixels included in the second display area 12 may be set as needed, and the present application is not limited thereto.
It is understood that the full screen fingerprint unlock scene may include a bright screen unlock scene and a blank screen unlock scene.
When the bright screen is unlocked, after the user triggers the fingerprint unlocking, the first display area 11 is used for displaying in the fingerprint unlocking process, the second display area 12 is used for fingerprint identification unlocking, and in the non-fingerprint unlocking process, the first display area 11 and the second display area 12 are both used for displaying. That is, in the non-fingerprint unlocking process, the second display area 12 has the same function as the other display areas and is used for displaying, so that the display screen is normally displayed in full screen at this time; in the fingerprint unlocking process, the first display area 11 displays normally, and the second display area 12 is used for fingerprint identification unlocking, so that the display screen only displays pictures normally in the first display area 11.
Correspondingly, when the bright screen is unlocked, the controller 16 can control the display driving circuit 13 to control the first pixels to display when the fingerprint unlocking detection module 15 detects that the user triggers the fingerprint unlocking, and control the fingerprint identification driving circuit 14 to control the second pixels to emit light simultaneously, so that the user inputs the fingerprint through the second display area 12 when the first display area 11 displays normally. In addition, the display driving circuit 13 may further drive the plurality of second pixels to display, so that after the fingerprint unlocking detection module 15 does not detect that the user triggers the fingerprint unlocking, or the fingerprint unlocking is completed, the controller 16 may control the display driving circuit 13 to control the plurality of first pixels and the plurality of second pixels to display.
The fingerprint unlocking may be considered to be completed within a preset period of time after the user triggers the fingerprint unlocking, so that after the fingerprint unlocking detection module 15 detects the preset period of time after the user triggers the fingerprint unlocking, the controller 16 controls the display driving circuit 13 to control the plurality of first pixels and the plurality of second pixels to display. The preset time period may be set according to needs, for example, 5 seconds, 6 seconds, 7 seconds, and the like according to the time required for the user to perform fingerprint unlocking.
When the screen is in unlocking, after the user triggers the fingerprint unlocking, the first display area 11 is not displayed in the fingerprint unlocking process, and the second display area 12 is used for fingerprint identification unlocking.
Correspondingly, when the screen is closed and unlocked, the controller 16 can control the fingerprint identification driving circuit 14 to control the plurality of second pixels to emit light simultaneously when the fingerprint unlocking detection module 15 detects that the user triggers the fingerprint unlocking, so that the user inputs the fingerprint through the second display area 12 under the condition that the first display area 11 does not display, namely the screen is closed.
In addition, the fingerprint unlocking detection module 15 may detect whether the user triggers fingerprint unlocking in a variety of ways. For example, an application program with a high privacy security requirement usually needs to perform fingerprint unlocking, and the application program can be set to send a fingerprint unlocking request to the fingerprint unlocking detection module 15 when the application program needs to perform fingerprint unlocking, so that the fingerprint unlocking detection module 15 can determine that a user triggers fingerprint unlocking after receiving the fingerprint receiving request.
That is, in an exemplary embodiment, the fingerprint unlocking detection module 15 is configured to receive a fingerprint unlocking request of an application program, and generate a fingerprint unlocking trigger signal according to the fingerprint unlocking request.
Or when the user's finger covers the unlocking image displayed in the preset area of the display screen, determining that the user triggers fingerprint unlocking. The unlocking image may be formed by controlling the display driving circuit 13 to control the pixels corresponding to the preset area to display by the controller 16. Correspondingly, the fingerprint unlocking detection module 15 is specifically configured to detect whether the unlocking image is covered, and generate a fingerprint unlocking trigger signal when the unlocking image is covered.
In an exemplary embodiment, the preset area may be an area of a certain preset size in the first display area, at this time, the unlock image may be displayed by the controller 16 controlling the display driving circuit 13 to control the plurality of first pixels corresponding to the preset area, or the preset area may be an area of a certain preset size in the second display area, at this time, the unlock image may be displayed by the controller 16 controlling the display driving circuit 13 to control the plurality of second pixels corresponding to the preset area.
In an exemplary embodiment, the unlocking image may be displayed in the second display area 12, that is, the unlocking image and the second display area 12 are located in the same area of the display screen, so that the user may trigger the unlocking function and perform fingerprint unlocking in the same area of the display screen 1, and further trigger the unlocking function and perform fingerprint unlocking through one-time finger covering, without having to replace the position to perform finger covering after triggering fingerprint unlocking to perform fingerprint identification, thereby improving the fingerprint unlocking speed and improving the user experience.
After determining that the user triggers fingerprint unlocking, the fingerprint unlocking detection module 15 may generate a fingerprint unlocking trigger signal and send the fingerprint unlocking trigger signal to the controller 16, so that the controller 16 may correspondingly control the display driving circuit 13 and the fingerprint identification driving circuit 14 according to the received fingerprint unlocking trigger signal, so as to implement a bright screen unlocking or screen-extinguishing unlocking function.
In the embodiment of the present application, each first pixel in the first display area 11 and each second pixel in the second display area 12 may respectively correspond to a display driving circuit 13 and a light emitting unit, such as an OLED, and by controlling the light emitting unit corresponding to the corresponding pixel to emit light by using the display driving circuit 13, the corresponding pixel is displayed, so that the first display area 11 or the second display area 12 may display.
The display driving circuit 13 may be any driving circuit capable of driving the light emitting unit corresponding to the first pixel or the second pixel to emit light, such as a 7T1C circuit composed of 7 thin film transistors TFT and 1 storage capacitor as shown in fig. 4, or a 6T1C circuit composed of 6 thin film transistors TFT and 1 storage capacitor, or a 5T2C circuit composed of 5 thin film transistors TFT and 2 storage capacitors, or the like.
The process of driving the first pixel or the second pixel by the display driving circuit 13 according to the embodiment of the present application will be described below with reference to the control timing chart of the 7T1C circuit shown in fig. 5 by taking the display driving circuit 13 as an example of the 7T1C circuit shown in fig. 4.
In fig. 4, M1, M2, M3, M4, M5, M6, and M7 are respectively thin film transistors TFT, cst is a storage capacitor, and an OLED corresponding to a pixel is connected to the N4 node shown in fig. 4. The function of each signal line in fig. 4 and 5 is shown in table 1 below.
TABLE 1
The process of specifically controlling the light emission of an OLED is divided into three phases: a reset phase, a signal writing phase and a light emitting phase. As shown in fig. 5, during the reset phase, the Vref signal can be written to the N1 and N4 nodes, the reset signal is negative, during this phase M5 and M7 are on, M1, M2, M4, M5 are off, current/voltage flows through M5 into the N1 node, through M7 into the N4 node, and OLED is off; in the signal writing stage, a display control signal Vdata is written into an N1 node, in the stage M2, M3 and M4 are turned on, M1, M5, M6 and M7 are turned off, current/voltage flows into an N1 node through M2, M3 and M4, OLED is turned off, and when the potential of the N1 node is charged to Vth++ Vdata|, M3 is turned off, so that threshold compensation is realized, wherein Tth is the threshold voltage of a TFT; in the light-emitting stage, M1, M3 and M6 are turned on, M2, M4, M5 and M7 are turned off, current/voltage flows into the N4 node through M1, M3 and M6, and the OLED emits light. The N1 node voltage is finally maintained at vth+|vdata|. The purpose of resetting the N1 node during the reset phase is to make the N1 node potential the same before each pixel emits light to reduce disturbance, and the purpose of resetting the N4 node is to flip the anode/cathode potential of the light emitting unit, e.g., OLED, to facilitate the extension of the lifetime of the light emitting unit. In the signal writing stage, the display control signal written into the N1 node determines the light emitting brightness.
Through the above-described process, the 7T1C circuit shown in fig. 4 is used to control the light emitting units corresponding to the corresponding pixels to emit light, so that the corresponding first pixels or second pixels are displayed, and the first display area 11 or the second display area 12 can be displayed.
It can be understood that, in the related art, the AMOLED panel generally uses the 7T1C circuit as the pixel driving circuit, and the 7T1C circuit is used to control the light emitting units corresponding to the pixels during the fingerprint unlocking and the non-fingerprint unlocking.
In addition, the light source emitted by the AMOLED screen is a surface light source, and when the AMOLED emits light, the AMOLED emits light line by line, namely when the Nth frame of picture is displayed, the whole picture is refreshed line by line from the first line until the last line is displayed, and then refreshing of the next frame of picture is started. As shown in fig. 6, for example, the frame to be displayed in the nth frame includes "B", at the time a when the frame in the nth-1 frame is displayed, the "a" included in the frame in the nth-1 frame is completely displayed on the display screen, and at the time B when the frame in the nth-1 frame is refreshed, only the frame in the nth-1 frame in the first few lines is refreshed to form the frame in the nth frame, the frame in the last few lines is still displayed, and at the time c when the frame in the nth frame is displayed, the frame in the nth-1 frame is completely refreshed to form the frame in the nth frame.
As can be seen from analyzing the refreshing process of the frame display of the AMOLED screen and the process of controlling the light emitting unit to emit light by the display driving circuit 13 corresponding to each pixel, in one frame of frame, the display of each row is divided into three processes: reset, signal writing and light emitting phases. The reset and signal writing phases are initiated, in which the light emitting cells corresponding to the pixels do not emit light, and thus, in each frame, every row starts, there is an operation in which the light emitting cells are turned off. In the process of displaying a frame of picture, the light-emitting units corresponding to the first row are turned off for a period of time and then turned on, and the light-emitting units corresponding to the second row are turned off for a period of time and then turned on until the light-emitting units corresponding to the last row are turned off for a period of time. Accordingly, there is a decrease in the brightness of the AMOLED screen for a period of time at the beginning of each frame of display, as shown in the dashed line in fig. 7. Fig. 7 is a schematic diagram of brightness change in a display screen refreshing process of an AMOLED screen. As can be seen from fig. 7, assuming that the display time per frame is 16.63 milliseconds (ms), there is a decrease in luminance of the picture for a while at the initial stage of the display per frame.
Because the 7T1C circuit is used as the pixel driving circuit, the AMOLED screen for controlling each pixel during fingerprint unlocking and non-fingerprint unlocking emits light line by line, so that the CMOS sensor of the under-screen fingerprint identification module scans fingerprints line by line when the fingerprint unlocking is carried out, if the display brightness of the AMOLED screen is reduced in a progressive scanning process, the original signal of the fingerprint imaging on the line is lower, and transverse stripes appear in the generated fingerprint image. And the larger the brightness darkening amplitude of the AMOLED display is, the more obvious the transverse streak is, the shorter the scanning time of the CMOS sensor in the fingerprint identification module is, and the more easily the transverse streak is.
In the display screen provided by the application, the first pixels and the second pixels are controlled to be displayed only by using the 7T1C circuit when the fingerprint is not unlocked, and the fingerprint identification driving circuit 14 is used for controlling the second pixels to emit light simultaneously when the fingerprint is unlocked, so that transverse fingerprints of optical fingerprints acquired by the fingerprint identification module due to the progressive light of the AMOLED screen are avoided, the generation quality of fingerprint images is improved, and the accuracy and the success rate of fingerprint identification are further improved.
The fingerprint recognition driving circuit 14 of the present application will be specifically described below.
Specifically, the fingerprint identification driving circuit 14 includes a plurality of switching tubes, wherein first ends of the plurality of switching tubes are respectively connected with anodes of the light emitting units corresponding to the plurality of second pixels, control ends of the plurality of switching tubes are respectively connected with the controller, second ends of the plurality of switching tubes are respectively connected with a preset voltage, and when a user trigger fingerprint unlocking is detected, the switching tubes are controlled to be closed so that anodes of the light emitting units corresponding to the plurality of second pixels are connected with the preset voltage.
The switching transistor may be any device having a switching function, such as a thin film transistor TFT, a transistor, or the like. The application is illustrated using a switching transistor as an example of a TFT. The light emitting unit may be any light emitting device such as a diode, an organic light emitting diode OLED, or the like.
It can be understood that, in the plurality of switching tubes, each switching tube corresponds to a second pixel, that is, as shown in fig. 8, assuming that the display driving circuit 13 corresponding to each second pixel is a 7T1C circuit, the fingerprint identification driving circuit 14 provided in the embodiment of the present application is equivalent to adding one switching tube M8 in the display driving circuit 13 corresponding to each second pixel, a first end of the switching tube M8 is connected to an anode (N4 node in fig. 8) of a light emitting unit corresponding to one second pixel, a control end switch_hbm of the switching tube M8 is connected to the controller 16 (not shown in fig. 8), and a second end hbm_on of the switching tube M8 is connected to a preset voltage. When the fingerprint unlocking triggered by the user is detected, the controller 16 controls the switching tube corresponding to the second pixel to be closed, so that the anode of the light emitting unit corresponding to the second pixel is connected with the preset voltage, and the light emitting unit corresponding to the second pixel can emit light.
Further, as shown in fig. 9 and 10, the plurality of second pixels include a plurality of second R pixels, a plurality of second G pixels, and a plurality of second B pixels, the second ends of the plurality of switching tubes corresponding to the second R pixels are all connected, the second ends of the plurality of switching tubes corresponding to the second G pixels are all connected, the second ends of the plurality of switching tubes corresponding to the second B pixels are all connected, and the control ends of the plurality of switching tubes corresponding to the plurality of second R pixels, the plurality of second G pixels, and the plurality of second B pixels are all connected.
Specifically, since the control ends of the switching tubes corresponding to the plurality of second pixels included in the second display area 12 are all connected together, when the user triggers the fingerprint unlocking, the controller 16 can control the switching tubes corresponding to the plurality of second pixels to be simultaneously closed, so that the light emitting units corresponding to the plurality of second pixels emit light at the same time, and cross grains in the optical fingerprint caused by the line-by-line light emission of the pixels of the display screen 1 are avoided.
It can be understood that the control process of the fingerprint identification driving circuit 14 is completely independent from the time sequence of the display driving circuit 13, and after the fingerprint unlocking detection module 15 does not detect the user triggering the fingerprint unlocking, or the fingerprint unlocking detection module 15 detects the preset time period of the user triggering the fingerprint unlocking, the plurality of switch tubes in the fingerprint identification driving circuit 14 are turned off, so that when the fingerprint unlocking is not performed, the second display area 12 is displayed under the control of the display driving circuit 13, and at this time, the display processes and principles of the first display area 11 and the second display area 12 are the same.
It should be noted that the voltage levels of the preset voltages respectively connected to the second ends of the plurality of switching tubes corresponding to the plurality of second R pixels, the plurality of second G pixels, and the plurality of second B pixels may be the same or different, which is not limited by the present application. The light-emitting brightness of the pixels with different colors can be respectively set by setting different voltage levels of preset voltages respectively connected with the second ends of the switching tubes corresponding to the pixels with different colors. In addition, the signal quantity at the control end of the switch tube enables the light-emitting unit to emit light, and the light-emitting brightness of the light-emitting unit also depends on the signal quantity at the control end.
In addition, as shown in fig. 10, the control ends of the plurality of switching tubes and the second ends of the plurality of switching tubes may be directly connected to the controller 16 through the main flexible circuit board without passing through the display driving circuit 13, and when the user triggers the fingerprint unlocking, the controller 16 controls the light emitting units corresponding to the plurality of second pixels to emit light simultaneously.
It can be understood that the 7T1C pixel driving circuit with a threshold value (Tth) compensation function can compensate for the non-uniformity of the threshold value in the display screen during the normal display and use of the display screen, and improve the uniformity of the display screen, especially the uniformity of the brightness at low brightness. Therefore, in the embodiment of the present application, the display driving circuit 13 may be implemented by using a 7T1C circuit, so as to avoid the cross-fingerprint of the collected optical fingerprint and simultaneously consider the uniformity of the low gray-scale brightness.
In order to achieve the above embodiment, the present application further provides an electronic device. Fig. 11 is a schematic structural diagram of an electronic device according to an embodiment of the present application. The electronic device shown in fig. 11 is only an example, and should not be construed as limiting the functionality and scope of use of the embodiments of the present application.
As shown in fig. 11, the electronic device 200 includes the display screen 1 according to the above embodiment.
The electronic device may be any electronic device such as a smart phone, a notebook computer, a wearable device, etc., which is not limited in the present application. Fig. 11 illustrates an example of an electronic device as a smart phone.
In an alternative implementation, as shown in fig. 11 and 12, the electronic device 200 may further include: a memory 210 and a processor 220, a bus 230 connecting the different components (including the memory 210 and the processor 220), the memory 210 storing a computer program, various types of data, etc., the processor 220 being for implementing various data processing, and executing the program to implement a certain function.
Bus 230 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus architectures. By way of example, and not limitation, such architectures include Industry Standard Architecture (ISA) bus, micro channel architecture (MAC) bus, enhanced ISA bus, video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.
Electronic device 200 typically includes a variety of computer-device readable media. Such media can be any available media that is accessible by electronic device 200 and includes both volatile and nonvolatile media, removable and non-removable media.
Memory 210 may also include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM) 240 and/or cache memory 250. The electronic device 200 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 260 may be used to read from or write to non-removable, nonvolatile magnetic media (not shown in FIG. 12, commonly referred to as a "hard disk drive"). Although not shown in fig. 12, a magnetic disk drive for reading from and writing to a removable non-volatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive for reading from or writing to a removable non-volatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In such cases, each drive may be coupled to bus 230 via one or more data medium interfaces. Memory 210 may include at least one program product having a set (e.g., at least one) of program modules configured to carry out the functions of embodiments of the application.
Program/utility 280 having a set (at least one) of program modules 270 may be stored in, for example, memory 210, such program modules 270 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment. Program modules 270 generally perform the functions and/or methods of the embodiments described herein.
The electronic device 200 may also communicate with one or more external devices 290 (e.g., keyboard, pointing device, display 291, etc.), one or more devices that enable a user to interact with the electronic device 200, and/or any device (e.g., network card, modem, etc.) that enables the electronic device 200 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 292. Also, electronic device 200 may communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet, through network adapter 293. As shown in fig. 12, the network adapter 293 communicates with other modules of the electronic device 200 over the bus 230. It should be appreciated that although not shown in fig. 12, other hardware and/or software modules may be used in connection with electronic device 200, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.
It should be noted that, the implementation process and the technical principle of the electronic device in this embodiment refer to the foregoing explanation of the display screen, and are not repeated herein.
According to the display screen included in the electronic device, when the fingerprint is unlocked, the pixels included in the fingerprint unlocking area are controlled to emit light simultaneously, and the pixels included in other areas are controlled to display, so that transverse lines in the collected optical fingerprints are avoided, the generation quality of fingerprint images is improved, and further the accuracy and the success rate of fingerprint identification are improved.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
It is to be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like. While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (10)
1. A display screen, comprising:
a first display region and a second display region, wherein the first display region includes a plurality of first pixels and the second display region includes a plurality of second pixels; the second display area is a fingerprint unlocking area in the display screen, and the first display area is other display areas of the display screen except the second display area;
a display driving circuit that drives the plurality of first pixel displays;
a fingerprint identification driving circuit for driving the plurality of second pixels to emit light when fingerprint unlocking is performed;
the fingerprint unlocking detection module is used for detecting whether a user triggers fingerprint unlocking or not;
and the controller is used for controlling the fingerprint identification driving circuit to control the second pixels to emit light simultaneously or controlling the display driving circuit to control the first pixels to display and controlling the fingerprint identification driving circuit to control the second pixels to emit light simultaneously when the fingerprint unlocking detection module detects that the user triggers fingerprint unlocking.
2. The display screen of claim 1, wherein the controller determines whether to unlock the fingerprint based on whether the fingerprint unlock detection module detects a user-triggered fingerprint unlock;
in the fingerprint unlocking process, the first display area is used for displaying, and the second display area is used for fingerprint identification unlocking.
3. The display screen of claim 2, wherein the first display area and the second display area are both configured to display during a non-fingerprint unlocking process.
4. The display screen of claim 1, wherein the controller determines whether to unlock the fingerprint based on whether the fingerprint unlock detection module detects a user-triggered fingerprint unlock;
and in the fingerprint unlocking process, controlling the fingerprint identification driving circuit to control the plurality of second pixels to emit light at the same time, wherein the first display area is not displayed.
5. The display screen of claim 1, wherein the fingerprint unlocking detection module is configured to receive a fingerprint unlocking request of an application program when the application program is fingerprint unlocked, and generate a fingerprint unlocking trigger signal according to the fingerprint unlocking request.
6. The display screen of claim 1, further comprising a preset area for displaying an unlock image,
the fingerprint unlocking detection module is used for detecting whether the unlocking image is covered by a finger of a user, and generating a fingerprint unlocking trigger signal when the unlocking image is covered.
7. The display screen of claim 6, wherein the predetermined area is a partial area of the first display area.
8. The display screen of claim 6, wherein the unlock image is located in the same area of the display screen as the second display area.
9. The display screen of claim 6, wherein the unlock image is formed by the controller controlling the display driving circuit to control the pixels corresponding to the preset area to display.
10. An electronic device comprising a display screen as claimed in any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310923698.3A CN116884047A (en) | 2019-12-03 | 2019-12-03 | Display screen and electronic equipment |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310923698.3A CN116884047A (en) | 2019-12-03 | 2019-12-03 | Display screen and electronic equipment |
| CN201911220024.7A CN111126168B (en) | 2019-12-03 | 2019-12-03 | Display screen and electronic equipment |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911220024.7A Division CN111126168B (en) | 2019-12-03 | 2019-12-03 | Display screen and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116884047A true CN116884047A (en) | 2023-10-13 |
Family
ID=70497269
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310923698.3A Pending CN116884047A (en) | 2019-12-03 | 2019-12-03 | Display screen and electronic equipment |
| CN201911220024.7A Active CN111126168B (en) | 2019-12-03 | 2019-12-03 | Display screen and electronic equipment |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911220024.7A Active CN111126168B (en) | 2019-12-03 | 2019-12-03 | Display screen and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN116884047A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111951730B (en) * | 2020-08-21 | 2022-04-15 | Oppo（重庆）智能科技有限公司 | Display device, electronic device, display control method, and storage medium |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107145856B (en) * | 2017-04-28 | 2021-04-02 | 北京小米移动软件有限公司 | Organic light emitting diode display module and control method thereof |
| CN107657238B (en) * | 2017-09-29 | 2020-11-20 | 联想(北京)有限公司 | Fingerprint acquisition method and electronic equipment |
| CN108596124A (en) * | 2018-04-28 | 2018-09-28 | 京东方科技集团股份有限公司 | Fingerprint recognition panel, fingerprint identification method and display device |
| CN209640878U (en) * | 2019-03-25 | 2019-11-15 | 深圳市汇顶科技股份有限公司 | Fingerprint identification device and electronic equipment |
-
2019
- 2019-12-03 CN CN202310923698.3A patent/CN116884047A/en active Pending
- 2019-12-03 CN CN201911220024.7A patent/CN111126168B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111126168B (en) | 2023-08-18 |
| CN111126168A (en) | 2020-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102460922B1 (en) | Display Device and Driving Method thereof | |
| US20200098318A1 (en) | Display screen, display device, display circuit and brightness compensation method therefor | |
| US11929004B2 (en) | Method of driving a display panel that includes a first display region having a first resolution and a second display region being adjacent to the first display region and having a second resolution higher than the first resolution | |
| CN109658900B (en) | Driving method, compensation circuit and driving device of display panel and display device | |
| US8269755B2 (en) | Display apparatus and electronic instrument with an extinction potential and period for a light emitting device | |
| US20110109610A1 (en) | Display device and electronic apparatus | |
| US20160210900A1 (en) | Display apparatus and driving method thereof | |
| US20070216700A1 (en) | Multi-screen synthesizing display apparatus and method | |
| US6914595B1 (en) | Digitizing apparatus | |
| US11495183B2 (en) | Method and device for controlling backlight brightness, and display device | |
| US11393394B2 (en) | Compensation method and compensation apparatus for organic light-emitting display and display device | |
| CN113450711A (en) | Display device, driving method thereof, and driving device | |
| CN109584786B (en) | Driving circuit and driving method of display panel and display device | |
| US20220139311A1 (en) | Display device and driving method of the same | |
| KR20200115767A (en) | Display device and driving method thereof | |
| CN112927646A (en) | Display panel, pixel driving method and electronic equipment | |
| CN111126168B (en) | Display screen and electronic equipment | |
| TWI444971B (en) | Display apparatus and electronic instrument | |
| CN111785215B (en) | Pixel circuit compensation method and driving method, compensation device and display device | |
| JP2021528670A (en) | Data processing methods and equipment, computer-readable media | |
| KR20230008205A (en) | Compensation drive for long horizontal blanks | |
| CN112581874B (en) | Display panel, display device, display control method and device and terminal equipment | |
| JP2011069943A (en) | Display device and electronic equipment | |
| CN109584785B (en) | Driving circuit and driving method of display panel and display device | |
| CN113394258A (en) | Display panel and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |