CN110580879B - Terminal device and display screen control method - Google Patents
Terminal device and display screen control method Download PDFInfo
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- CN110580879B CN110580879B CN201811119251.6A CN201811119251A CN110580879B CN 110580879 B CN110580879 B CN 110580879B CN 201811119251 A CN201811119251 A CN 201811119251A CN 110580879 B CN110580879 B CN 110580879B
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- 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
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1415—Digital output to display device ; Cooperation and interconnection of the display device with other functional units with means for detecting differences between the image stored in the host and the images displayed on the displays
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- General Physics & Mathematics (AREA)
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- Human Computer Interaction (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Abstract
The application provides a terminal device and a display screen control method, and aims to solve the problem that when a photoelectric sensor is arranged below a display screen of the terminal device, abnormal light spots are easily generated and an image displayed by the display screen is interfered. The terminal device includes: the driving power supply is used for supplying power to the display screen through the switching device; the photoelectric sensor is positioned below the display screen and used for emitting light beams outwards under the control of the processor and detecting according to the received reflected light; the processor is used for generating a first control signal before the photoelectric sensor emits a light beam outwards, and the first control signal is used for controlling the switch device to close a path between the display screen and the driving power supply; and when the photoelectric sensor does not emit light beams outwards, generating a second control signal, wherein the second control signal is used for controlling the switch device to conduct a passage between the display screen and the driving power supply.
Description
The present application claims priority of chinese patent application having application number 201810582894.8 entitled "display panel control method and electronic device" filed by chinese patent office on 7/6/2018, the entire contents of which are incorporated herein by reference.
Technical Field
The application relates to the technical field of display, in particular to a terminal device and a display screen control method.
Background
With the continuous development of electronic information technology, intelligent terminals such as smart phones and tablet computers have become necessities in work and life of people, and the requirements of people on the visual experience of the intelligent terminals are higher and higher. At present, manufacturers strive to bring better visual experience to users by improving the screen occupation ratio of the intelligent terminal.
Because the organic light-emitting diode (OLED) display screen of the intelligent terminal has a certain transmittance, the screen occupation ratio of the intelligent terminal can be improved by arranging the distance sensor (such as a proximity sensor and a TOF sensor) and the face recognition sensor which need to be configured on the front side (the side where the display screen is located) of the intelligent terminal under the display screen of the intelligent terminal, so that the potential feasibility is achieved, the opening of the sensor can be omitted, and the frame width of the display screen can be compressed to the maximum extent.
However, when the photoelectric sensor arranged on the front surface of the intelligent terminal works, the photoelectric sensor needs to emit a light beam (generally infrared light) outwards, then receives reflected light of an object to be detected, and judges the distance or other information of the object to be detected by analyzing the characteristics of the reflected light. When the photoelectric sensor works, a light beam emitted by the photoelectric sensor irradiates a channel of a Thin Film Transistor (TFT) of an OLED display screen above, so that a photo-generated carrier is generated in the TFT channel, the drive current of pixels of the OLED screen is influenced, the brightness of the pixels of the OLED display screen is changed, abnormal light spots are generated in an area irradiated by the light beam in the OLED display screen, and the interference is caused to an image displayed by the display screen.
Disclosure of Invention
The application provides a terminal device and a display screen control method, and aims to solve the problem that when a photoelectric sensor is arranged below a display screen of the terminal device, abnormal light spots are easily generated and an image displayed by the display screen is interfered.
In a first aspect, the present application provides a terminal device, the terminal device includes treater, switching device, display screen, drive power supply and photoelectric sensor, photoelectric sensor is located the below of display screen, the treater respectively with the display screen switching device and photoelectric sensor connects, switching device still with the display screen and drive power supply connects.
The driving power supply is used for supplying power to the display screen through the switch device; the photoelectric sensor is used for emitting light beams outwards under the control of the processor and detecting according to the received reflected light; the processor is configured to generate a first control signal before the photosensor emits a light beam outward, and send the first control signal to the switching device, where the first control signal is used to control the switching device to turn off a path between the display screen and the driving power supply; when the photoelectric sensor does not emit light beams outwards, generating a second control signal, and sending the second control signal to the switch device, wherein the second control signal is used for controlling the switch device to conduct a path between the display screen and the driving power supply; the switch device is used for switching off a path between the display screen and the driving power supply under the control of the first control signal; and under the control of the second control signal, conducting a path between the display screen and the driving power supply.
By adopting the scheme, the terminal equipment can control the power-on or power-off of the display screen according to the working state of the photoelectric sensor arranged below the display screen in the terminal equipment, so that when the photoelectric sensor emits light beams outwards, a channel between the display screen and the driving power supply is in a turn-off state, namely the power-off of the display screen, and when the photoelectric sensor does not emit light beams outwards, the channel between the display screen and the driving power supply is in a turn-on state, namely the power-on of the display screen. When the photoelectric sensor emits light beams outwards, the display screen is powered off, so that when the light beams emitted by the photoelectric sensor irradiate the display screen, photo-generated carriers cannot be generated in the display screen, abnormal light spots cannot be generated on the display screen, and the display effect of the display screen is influenced.
Meanwhile, because the photoelectric sensor is positioned below the display screen, the opening of the photoelectric sensor on the front side of the terminal equipment can be removed, the frame width of the display screen is compressed, and the screen occupation ratio of the terminal equipment can be improved.
In one possible embodiment, the switching means may be implemented by a single transistor or a plurality of transistors. When the switching device is implemented by a plurality of transistors, the switching device includes a first transistor, a second transistor, a first resistor, and a second resistor; the first end of the first transistor is connected with the first end of the first resistor and the first end of the second resistor respectively, the second end of the first transistor is connected with the driving power supply and the second end of the first resistor respectively, the third end of the first transistor is connected with the display screen, the first end of the second transistor is connected with the processor, the second end of the second transistor is connected with the second end of the second resistor, and the third end of the second transistor is grounded.
When the first end of the second transistor receives the first control signal, the second transistor and the first transistor are in an off state, and when the first end of the second transistor receives the second control signal, the second transistor and the first transistor are in an on state.
In a possible implementation manner, the terminal device further includes a discharge circuit, and the discharge circuit is respectively connected to the processor, the switch device, and the display screen. At this time, the processor is further configured to: before the photoelectric sensor emits a light beam outwards, generating a third control signal and sending the third control signal to the discharge circuit, wherein the third control signal is used for controlling the discharge circuit to release electric energy on a path between the driving power supply and the display screen; and when the photoelectric sensor does not emit a light beam outwards, generating a fourth control signal, and sending the fourth control signal to the discharge circuit, wherein the fourth control signal is used for controlling the discharge circuit to close a passage between the discharge circuit and the driving power supply.
The discharge circuit is used for releasing electric energy on a path between the driving power supply and the display screen under the control of the third control signal; and turning off a path between the discharge circuit and the driving power supply under the control of the fourth control signal.
By adopting the scheme, the terminal equipment can turn off the passage between the display screen and the driving power supply when the photoelectric sensor emits the light beam outwards, and quickly release the residual electric energy of the driving power supply in the display screen, so that the display effect of the display screen is improved.
In one possible embodiment, the discharge circuit includes a third transistor and a third resistor; a first end of the third transistor is connected with the processor, a second end of the third transistor is respectively connected with the switch device and the display screen, a third end of the third transistor is connected with a first end of the third resistor, and a second end of the third resistor is grounded;
when the first end of the third transistor receives the third control signal, the third transistor is in an on state, and when the first end of the third transistor receives the fourth control signal, the third transistor is in an off state.
In one possible embodiment, the first transistor is a triode or a field effect transistor, and the second transistor is a triode or a field effect transistor.
In a second aspect, the present application further provides another terminal device, where the terminal device includes a processor, a plurality of switch devices, a display screen, a driving power supply, and a photosensor, where the photosensor is located below the display screen, a target area of the display screen includes a plurality of display units, the switch devices respectively correspond to the display units one to one, and the target area includes an area of the display screen irradiated by a light beam emitted by the photosensor; the processor is respectively connected with the display screen, the plurality of switch devices and the photoelectric sensor, and the plurality of display units are connected with the driving power supply through the corresponding switch devices.
The driving power supply is used for supplying power to the plurality of display units through the plurality of switch devices; the photoelectric sensor is used for emitting light beams outwards under the control of the processor and detecting according to the received reflected light; the processor is configured to generate a first control signal before the photosensor emits a light beam outward, and send the first control signal to each of the switch devices, where the first control signal is used to control each of the switch devices to turn off a path between a corresponding display unit and the driving power supply; when the photoelectric sensor does not emit light beams outwards, generating a second control signal, and sending the second control signal to each switch device, wherein the second control signal is used for controlling each switch device to conduct a passage between the corresponding display unit and the driving power supply; the switch device is used for switching off a path between the corresponding display unit and the driving power supply under the control of the first control signal; and under the control of the second control signal, conducting a path between the corresponding display unit and the driving power supply.
By adopting the scheme, the terminal equipment can control the power-on or power-off of the display unit in the target area of the display screen according to the working state of the photoelectric sensor arranged below the display screen in the terminal equipment, so that when the photoelectric sensor emits light beams outwards, the passage between the display unit in the target area and the driving power supply is in a turn-off state, namely the power-off of the display unit in the target area, and when the photoelectric sensor does not emit light beams outwards, the passage between the display unit in the target area and the driving power supply is in a turn-on state, namely the power-on of the display unit in the target area. When the photoelectric sensor emits light beams outwards, the power of the display unit in the target area is cut off, namely the power of the display unit irradiated by the photoelectric sensor is cut off, so that the light beams emitted by the photoelectric sensor are irradiated on the display unit in the target area, photogenerated carriers cannot be generated in the display unit, and abnormal light spots cannot be generated on the display screen. In addition, the terminal equipment controls part of display units in the display screen to be powered on or powered off, so that the influence on the display effect of the display screen and the impact of the driving power supply are small.
Meanwhile, because the photoelectric sensor is positioned below the display screen, the opening of the photoelectric sensor on the front side of the terminal equipment can be removed, the frame width of the display screen is compressed, and the screen occupation ratio of the terminal equipment can be improved.
In one possible embodiment, the display unit includes a driving unit and a light emitting unit, and the switching device may be implemented by a single transistor or a plurality of transistors.
When the switching device is implemented by a plurality of transistors, the switching device comprises a first transistor and a second transistor, a first end of the first transistor is connected with a first end of the second transistor and the processor respectively, a second end of the first transistor is connected with the driving power supply, a third end of the first transistor is connected with one end of the driving unit, a second end of the second transistor is connected with the other end of the driving unit, and a third end of the second transistor is connected with the light emitting unit. When the first ends of the first transistor and the second transistor receive the first control signal, the first transistor and the second transistor are in an off state, and when the first ends of the first transistor and the second transistor receive the second control signal, the first transistor and the second transistor are in an on state.
When the switching device is implemented by a single transistor, the switching device is a third transistor, the third transistor is respectively connected with the processor, the driving power supply and the driving unit, and the driving unit is connected with the light emitting unit; alternatively, the third transistor is connected to the processor, the driving unit, and the light emitting unit, respectively, and the driving unit is further connected to the driving power supply. Wherein when the third transistor receives the first control signal, the third transistor is in an off state, and when the third transistor receives the second control signal, the third transistor is in an on state.
In one possible embodiment, the driving unit is formed of a plurality of thin film transistors TFT, and the light emitting unit is a light emitting diode.
In one possible embodiment, the first transistor is a triode or a field effect transistor, and the second transistor is a triode or a field effect transistor.
In a third aspect, the present application further provides a display screen control method, which is applied to a terminal device, where a photoelectric sensor in the terminal device is located below a display screen of the terminal device. The method comprises the following steps: before the photoelectric sensor emits a light beam outwards, controlling a display unit in a target area of the display screen to be powered down, wherein the target area comprises an area, irradiated by the light beam emitted by the photoelectric sensor, of the display screen; and controlling the display unit in the target area to be powered on when the photoelectric sensor does not emit light beams outwards.
By adopting the scheme, the terminal equipment can control the power-on or power-off of the display screen according to the working state of the photoelectric sensor arranged below the display screen in the terminal equipment. When the photoelectric sensor emits light beams outwards, the display screen is powered off, so that when the light beams emitted by the photoelectric sensor irradiate the display screen, photo-generated carriers cannot be generated in the display screen, abnormal light spots cannot be generated on the display screen, and the display effect of the display screen is influenced.
In a possible implementation manner, the terminal device further includes a switch device, the display screen is connected to a driving power supply of the display screen through the switch device, and the target area includes all display units in the display screen. Before the photoelectric sensor emits a light beam outwards, the terminal equipment generates a first control signal, and the first control signal is used for controlling the switching device to turn off a passage between the display unit in the target area and the driving power supply so as to control the power failure of the display unit in the target area of the display screen; when the photoelectric sensor does not emit light beams outwards, the terminal equipment generates a second control signal, and the second control signal is used for controlling the switch device to conduct a path between the display unit in the target area and the driving power supply, so that the display unit in the target area is controlled to be powered on.
In a possible implementation manner, the terminal device further includes a plurality of switch devices, the target area of the display screen includes a plurality of display units, the plurality of switch devices respectively correspond to the plurality of display units one to one, and the plurality of display units are respectively connected to the driving power supply of the display screen through the respective corresponding switch devices. Before the photoelectric sensor emits a light beam outwards, the terminal equipment generates a third control signal, and the third control signal is used for controlling each switch device to close a path between the corresponding display unit and the drive power supply; and when the photoelectric sensor does not emit light beams outwards, the terminal equipment generates a fourth control signal, and the fourth control signal is used for controlling each switch device to conduct a passage between the corresponding display unit and the driving power supply.
Drawings
Fig. 1 is a schematic structural diagram of a terminal device according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a switching device in a terminal device according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of another terminal device provided in an embodiment of the present application;
fig. 4 is a schematic structural diagram of a discharge circuit in a terminal device according to an embodiment of the present disclosure;
fig. 5a is a schematic structural diagram of a terminal device according to an embodiment of the present application;
fig. 5b is a schematic diagram of an output signal of a processor in a terminal device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of another terminal device provided in the embodiment of the present application;
fig. 7 is a schematic structural diagram of a switching device in a terminal device according to an embodiment of the present application;
fig. 8a is a schematic structural diagram of a switching device in a terminal device according to an embodiment of the present disclosure;
fig. 8b is a schematic structural diagram of a switching device in another terminal device according to an embodiment of the present disclosure;
fig. 9 is a timing diagram of operations of a proximity sensor and a display screen in a smart phone according to an embodiment of the present application.
Detailed Description
The application provides a terminal device and a display screen control method, and aims to solve the problem that when a photoelectric sensor is arranged below a display screen of the terminal device, abnormal light spots are easily generated and an image displayed by the display screen is interfered. The method and the terminal device are based on the same inventive concept, and because the principles of solving the problems of the method and the terminal device are similar, the implementation of the method and the terminal device can be referred to each other, and repeated parts are not described again.
In order to improve the influence of a photoelectric sensor below a display screen of a terminal device on the display effect of the terminal device, in the embodiment of the application, the display mode of the terminal device is mainly improved, and the terminal device can be a mobile phone, a tablet computer, a notebook computer, an intelligent watch or other devices with a display function and needing to be provided with the photoelectric sensor. However, it should be understood that the terminal device provided in the embodiment of the present application is a complete terminal device, and also has a structure that a known terminal device has, and only the components related to improving the display effect of the terminal device in the terminal device are described herein, and details of other components are not described herein.
In addition, it is to be understood that, in the description of the present application, a plurality means two or more; the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, nor order.
As shown in fig. 1, the present application provides a terminal device 100, the terminal device 100 includes a driving power source 110, a photo sensor 120, a processor 130, a switch device 140, and a display 150, wherein the processor 130 is respectively connected to the photo sensor 120, the switch device 140, and the display 150, the switch device 140 is further connected to the display 150 and the driving power source 110, and the photo sensor 120 is located below the display 150.
The above components constituting the terminal device 100 will be specifically described with reference to fig. 1:
the driving power supply 110 is configured to supply power to the display screen 150 through the switch device 140;
the photoelectric sensor 120 is configured to emit a light beam outward under the control of the processor 130 and perform detection according to the received reflected light;
the processor 130 is configured to generate a first control signal before the photosensor 120 emits a light beam outward, and send the first control signal to the switching device 140, where the first control signal is used to control the switching device 140 to turn off a path between the display screen 150 and the driving power supply 110; when the photosensor 120 does not emit a light beam outwards, generating a second control signal, and sending the second control signal to the switch device 140, where the second control signal is used to control the switch device 140 to turn on a path between the display screen 150 and the driving power supply 110;
the switch device 140 is configured to turn off a path between the display screen 150 and the driving power supply 110 under the control of the first control signal; and under the control of the second control signal, conducting a path between the display screen 150 and the driving power supply 110.
The photoelectric sensor 120 converts the measured change into a change of an optical signal based on the photoelectric effect, and further converts the optical signal into an electrical signal by using a photoelectric element, thereby obtaining the measured quantity. The photoelectric sensor 120 includes, but is not limited to, any one or more of a distance sensor (e.g., a proximity sensor, a time of flight (TOF) sensor, etc.), a face recognition sensor, and an iris recognition sensor. The display screen 150 has a transmittance such that the light beam emitted from the photosensor 120 and the light reflected from the external object can pass through the display screen 150, for example, the display screen 150 may be an OLED display screen or a micro led display screen. The scene in which the photosensor 120 does not emit the light beam outward includes a scene in which the photosensor 120 does not operate or a scene in which the photosensor 120 finishes emitting the light beam.
It should be noted that, when the path between the display screen 150 and the driving power supply 110 is in the off state, the display screen 150 is in the off state, but when the path between the display screen 150 and the driving power supply 110 is in the on state, the display screen 150 is not necessarily in the on state, and at this time, the processor 130 controls whether the display screen 150 is in the on state or the off state. In the scene that the display screen 150 is turned off, when the photoelectric sensor 120 emits a light beam outwards, the path between the display screen 150 and the driving power supply 110 is in the off state, and when the photoelectric sensor 120 does not emit a light beam outwards, the processor 130 may not generate the second control signal, so that the path between the display screen 150 and the driving power supply 110 is still in the off state, which may maintain the turn-off of the display screen 150, and may also ensure that the photoelectric sensor 120 irradiates the display screen 150 without generating photo-generated carriers, and further may not generate abnormal light spots, so that the display screen 150 is turned off, and in the scene that the photoelectric sensor 120 emits a light beam outwards, the path between the display screen 150 and the driving power supply 110 may be always in the off state.
In addition, the first control signal and the second control signal may be different levels (low level or high level) in the same control signal for controlling the switching device 140.
In order not to affect the visual effect of the user, the duration of each time the light beam is sent out by the photosensor 120 is less than or equal to the reciprocal of the minimum refresh rate of the display screen 150, so that the user of the terminal device 100 does not feel the flicker of the screen 150, and the user experience is improved. Wherein the refresh rate refers to the number of times the electron beam repeatedly scans the image on the display screen.
Referring to fig. 2, in one embodiment, the switching device 140 may be implemented by a single transistor or a plurality of transistors. When the switching device 140 is implemented by a plurality of transistors, the switching device 140 may include a first transistor Q1, a second transistor Q2, a first resistor R1, and a second resistor R2, a first end of the first transistor Q1 is respectively connected to a first end of the first resistor R1 and a first end of the second resistor R2, a second end of the first transistor Q1 is respectively connected to the driving power source 110 and a second end of the first resistor R1, a third end of the first transistor Q1 is connected to the display screen 150, a first end of the second transistor Q2 is connected to the processor 130, a second end of the second transistor Q2 is connected to a second end of the second resistor R2, and a third end of the second transistor Q2 is grounded.
Wherein, when the first terminal of the second transistor Q2 receives the first control signal, the second transistor Q2 and the first transistor Q1 are in an off state, and when the first terminal of the second transistor Q2 receives the second control signal, the second transistor Q2 and the first transistor Q1 are in an on state.
In fig. 2, the first transistor Q1 is an N-channel fet, the second transistor Q2 is a P-channel fet, and the first transistor Q1 and the second transistor Q2 may be other types of transistors capable of implementing the function of the switching device 140.
Further, the first transistor Q1 is a triode or a field effect transistor, and the second transistor Q2 is a triode or a field effect transistor. When the switching device 140 is implemented by a single transistor, the switching device 140 may also be a transistor or a field effect transistor.
In order to better close the path between the display screen 150 and the driving power source 110 and ensure that no photogenerated carriers are generated in the display screen 150, the transistor included in the switching device 140 is usually disposed at a position where the infrared light beam emitted from the photosensor 120 cannot reach, or a light shielding component is disposed on the transistor included in the switching device 140.
Referring to fig. 3, in order to close the path between the display screen 150 and the driving power supply 110 and quickly release the residual electric energy of the driving power supply 110 in the display screen 150 before the photosensor 120 emits a light beam outward, so as to improve the display effect of the display screen 150, the terminal device 100 further includes a discharging circuit 160, and the discharging circuit 160 is respectively connected to the processor 130, the switching device 140, and the display screen 150.
The processor 130 is further configured to: before the photosensor 120 emits a light beam outward, generating a third control signal, and sending the third control signal to the discharge circuit 160, where the third control signal is used to control the discharge circuit 160 to release electric energy on a path between the driving power supply 110 and the display screen 150; when the photosensor 120 does not emit a light beam outwards, generating a fourth control signal, and sending the fourth control signal to the discharge circuit 160, wherein the fourth control signal is used for controlling the discharge circuit 160 to close a path between the discharge circuit 160 and the driving power supply 110;
the discharging circuit 160 is configured to release electric energy on a path between the driving power source 110 and the display screen 150 under the control of the third control signal; and, under the control of the fourth control signal, turning off the path between the discharge circuit 160 and the driving power supply 110.
It should be noted that the first control signal and the second control signal may be different levels (low level or high level) in the same control signal for controlling the discharge circuit 160.
Referring to fig. 4, in particular, the discharge circuit 160 may include a third transistor Q3 and a third resistor R3; a first terminal of the third transistor Q3 is connected to the processor 130, a second terminal of the third transistor Q3 is connected to the switching device 140 and the display screen 150, respectively, a third terminal of the third transistor Q3 is connected to a first terminal of the third resistor R3, and a second terminal of the third resistor R3 is grounded.
When the first end of the third transistor Q3 receives the third control signal, the third transistor Q3 is in an on state, and when the first end of the third transistor Q3 receives the fourth control signal, the third transistor Q3 is in an off state.
Further, the third transistor Q3 may be a triode or a field effect transistor. In fig. 4, the third transistor Q3 is only an example of a P-channel field effect transistor, and the present embodiment is not limited thereto.
When the switching device 140 has the structure shown in fig. 3 and the discharge circuit 160 has the structure shown in fig. 4, the structure of the terminal device 100 is shown in fig. 5 a. The terminal device 100 generates a control signal discharge _ ctrol for controlling the discharge circuit 160, where a high level in the control signal discharge _ ctrol is the second control signal, and a low level in the control signal discharge _ ctrol is the fourth control signal; and generating a control signal power _ ctrol for controlling the switching device, wherein a low level in the control signal power _ ctrol is the first control signal, and a high level in the control signal power _ ctrol is the third control signal. When the photosensor 120 does not emit a light beam outward, the control signal discharge _ ctrol is at a high level, the control signal power _ ctrol is at a low level, the first transistor Q1 and the second transistor Q2 are turned on, the third transistor Q3 is turned off, the driving power supply 110 powers on the display screen 150, and the discharging function of the discharging circuit is not available; when the photo sensor 120 emits a light beam outward, the terminal device 100 generates the first control signal at a low level, the fourth control signal at a high level, when the photo sensor 120 emits a light beam outward, the control signal discharge _ ctrol is at a low level, the control signal power _ ctrol is at a high level, the first transistor Q1 and the second transistor Q2 are turned off, the third transistor Q3 is turned on, the display screen 150 is powered off, the electric energy remaining in the driving power supply 110 is quickly conducted to the ground through the third resistor R3, and timing charts of the control signal discharge _ ctrol and the control signal power _ ctrol are shown in fig. 5 b.
By adopting the above scheme, the terminal device 100 can control the power-on or power-off of the display screen 150 according to the working state of the photoelectric sensor 120 arranged below the display screen 150 in the terminal device 100, so that when the photoelectric sensor 120 emits an outward light beam, the display screen 150 is powered off, and when the photoelectric sensor 120 does not emit an outward light beam, the display screen 150 is powered on. When the photoelectric sensor 120 emits a light beam outwards, the display screen 150 is powered off, so that when the light beam emitted by the photoelectric sensor 120 irradiates the display screen 150, a photo-generated carrier cannot be generated in the display screen 150, and an abnormal light spot cannot be generated on the display screen 150.
Meanwhile, since the photoelectric sensor 120 is located below the display screen 150, the opening of the photoelectric sensor on the front side of the terminal device 100 can be removed, the frame width of the display screen 150 is compressed, and the screen occupation ratio of the terminal device 100 can be further improved.
As shown in fig. 6, the present application further provides another terminal device 600, where the terminal device 600 includes a driving power source 610, a photo sensor 620, a processor 630, a plurality of switching devices 640, and a display screen 650, the photo sensor 620 is located below the display screen 650, a target area of the display screen 650 includes a plurality of display units 651, the plurality of switching devices 640 are respectively in one-to-one correspondence with the plurality of display units 651 in the target area, and the target area includes an area of the display screen 160 irradiated by a light beam emitted by the photo sensor 620; the processor 640 is connected to the photosensor 620, the plurality of switching devices 640, and the display screen 650, respectively, and the display unit 651 in the target region is connected to the driving power supply 610 through the corresponding switching device 640.
The above-mentioned components constituting the terminal device 600 are specifically described below with reference to fig. 6:
the driving power supply 610 is configured to supply power to the plurality of display units 651 through the plurality of switching devices 640;
the photoelectric sensor 620 is configured to emit a light beam outward under the control of the processor 630 and perform detection according to the received reflected light;
the processor 630 is configured to generate a first control signal before the photosensor 620 emits a light beam outward, and send the first control signal to each of the switch devices 640, where the first control signal is used to control each of the switch devices 640 to turn off a path between a corresponding display unit 651 and the driving power supply 610; when the photosensor 620 does not emit a light beam outwards, generating a second control signal, and sending the second control signal to each switch device 640, wherein the second control signal is used for controlling each switch device 640 to conduct a path between the corresponding display unit 651 and the driving power supply 610;
the switch device 640 is configured to turn off a path between the corresponding display unit 651 and the driving power supply 610 under the control of the first control signal; and turning on a path between the corresponding display unit 651 and the driving power source 610 under the control of the second control signal.
The photoelectric sensor 620 converts the measured change into a change of an optical signal based on a photoelectric effect, and further converts the optical signal into an electrical signal by using a photoelectric element to obtain the measured quantity. The photosensor 620 includes, but is not limited to, any one or more of a distance sensor (e.g., a proximity sensor, a TOF sensor, etc.), a facial recognition sensor, and an iris recognition sensor, etc. The display screen 650 has a transmittance such that the light beams emitted from the photo sensor 620 and the light reflected from the external object can transmit through the display screen 650, for example, the display screen 650 may be an OLED display screen or a micro led display screen. The display screen 650 is composed of a plurality of display units 651, and the display units 651 in the other regions of the display screen except for the target region may be directly connected to the driving power supply 610.
It should be noted that the first control signal and the second control signal may be different levels (low level or high level) in the same control signal for controlling the switch device 140. In addition, in the scene of the display 650 being turned off, when the photosensor 620 emits a light beam outward, the path between the display screen 650 and the driving power supply 610 is in an off state, when the photosensor 620 does not emit a light beam outward, the processor 630 may not generate the second control signal, so that the path between the display screen 650 and the driving power supply 610 is still in an off state, this maintains the display screen 650 off, ensures that the photosensor 620 does not generate photo-generated carriers when it strikes the display screen 650, and thus no abnormal light spot is generated, in a scene where the display screen 650 is turned off, and the photosensor 620 emits a light beam outwards, the processor 630 may not generate the second control signal, and the path between the display screen 650 and the driving power supply 610 may be always in an off state.
In order not to affect the visual effect of the user, the duration of each time the photoelectric sensor 620 sends out the light beam is less than or equal to the reciprocal of the minimum refresh rate of the display screen 650, so that the user of the terminal device 600 does not feel the flicker of the screen 650, and the user experience is improved.
Further, the display unit 651 may include a driving unit 6511 and a light emitting unit 6512, and the driving unit 6511 is configured to drive the light emitting unit 6512 to emit light by using energy obtained from the driving power source 610 under the control of the processor 630, so as to implement a function of displaying an image to be displayed. The driving unit 6511 is formed of a plurality of Thin Film Transistors (TFTs), and the light emitting unit 6512 is a light emitting diode.
In implementation, the switching device 640 may be implemented by a single transistor or a plurality of transistors. Referring to fig. 7 (only one of the switch devices 640 and the display unit 651 corresponding to the switch device are illustrated in fig. 7), when the switch device 640 is implemented by a plurality of transistors, the switch device 640 may include a first transistor T1 and a second transistor T2, wherein the first terminal of the first transistor T1 is connected with the first terminal of the second transistor T2 and the processor 630, respectively, a second terminal of the first transistor T1 is connected to the driving power supply 610, a third terminal of the first transistor T1 is connected to one terminal of a driving unit 6511 of the display unit 651 corresponding to the switching device 640, a second terminal of the second transistor T2 is connected to the other terminal of the driving unit 6511 of the display unit 651 corresponding to the switching device 640, the third terminal of the second transistor T2 is connected to the light emitting unit 6512 of the display unit 651 corresponding to the switching device 640. When the first terminals of the first and second transistors T1 and T2 receive the first control signal, the first and second transistors T1 and T2 are in an off state, and when the first terminals of the first and second transistors T1 and T2 receive the second control signal, the first and second transistors T1 and T2 are in an on state.
Further, the first transistor T1 is a triode or a field effect transistor, and the second transistor T2 is a triode or a field effect transistor.
When the switch device 640 is implemented by a single transistor, the switch device 640 may be a third transistor T3, as shown in fig. 8a, the third transistor T3 is connected to the driving power supply 610, the processor 630 and the driving unit 6511 of the display unit 651 corresponding to the switch device 640, respectively, and the driving unit 6511 of the display unit 651 corresponding to the switch device 640 is connected to the light emitting unit 6512 of the display unit 651 corresponding to the switch device 640; alternatively, as shown in fig. 8b, the third transistor T3 is connected to the processor 630, the drive unit 6511 of the display unit 651 corresponding to the switching device 640, and the light-emitting unit 6512 of the display unit 651 corresponding to the switching device 640, respectively, and the drive unit 6511 of the display unit 651 corresponding to the switching device 640 is also connected to the drive power supply, and only one switching device 640 and the display unit 651 corresponding to the switching device are illustrated in fig. 8a and 8 b. When the third transistor T3 receives the first control signal, the third transistor T3 is in an off state, and when the third transistor T3 receives the second control signal, the third transistor T3 is in an on state.
In order to better shut off the path between the display unit 651 and the driving power supply 610 and ensure that no photogenerated carriers are generated in the display unit 651, the transistors included in the plurality of switching devices 640 are generally disposed at positions where the infrared light beams emitted from the photosensors 620 do not irradiate, or a light shielding member is disposed on the transistors included in the plurality of switching devices 640.
Through the scheme, the terminal device 600 can control the power on or power off of the display unit in the target area of the display screen 650 according to the working state of the photoelectric sensor 620 arranged below the display screen 650 in the terminal device 600, so that when the photoelectric sensor 620 emits light beams outwards, the display unit in the target area is powered off, and when the photoelectric sensor 620 does not emit light beams outwards, the display unit in the target area is powered on. When the photosensor 620 emits a light beam outwards, the power of the display unit in the target area is cut off, that is, the power of the display unit irradiated by the photosensor 620 is cut off, so that the light beam emitted by the photosensor 620 is irradiated on the display unit in the target area, and a photogenerated carrier cannot be generated in the display unit, and an abnormal light spot cannot be generated on the display screen 650. In addition, the terminal device 600 controls power on or power off of a part of the display units in the display screen 650, so that the influence on the display effect of the display screen 650 and the impact of the driving power supply 610 are small.
Meanwhile, because the photoelectric sensor 620 is located below the display screen 650, the opening of the photoelectric sensor on the front side of the terminal device 600 can be removed, the frame width of the display screen 650 is compressed, and the screen occupation ratio of the terminal device 600 can be further improved.
Based on the above embodiment, the application also provides a display screen control method, which is applied to terminal equipment, wherein a photoelectric sensor in the terminal equipment is arranged below the display screen of the terminal equipment. The method comprises the following steps:
i. before the photoelectric sensor emits a light beam outwards, controlling a display unit in a target area of the display screen to be powered down, wherein the target area at least comprises an area, irradiated by the light beam emitted by the photoelectric sensor, of the display screen;
ii. And controlling the display unit in the target area to be powered on when the photoelectric sensor does not emit light beams outwards.
The target area may be the entire display screen, or may be a local area of the display screen including an area irradiated by the light beam emitted by the photosensor.
Specifically, the terminal device may control the power down and power up of the display unit in the target area of the display screen by, but not limited to, the following two ways:
mode A: the terminal equipment further comprises a switch device, the display screen is connected with a driving power supply of the display screen through the switch device, and at the moment, the target area comprises all display units in the display screen;
before the photoelectric sensor emits a light beam outwards, generating a first control signal, wherein the first control signal is used for controlling the switching device to turn off a passage between the display unit in the target area and the driving power supply, and further controlling the power failure of the display unit in the target area of the display screen; and generating a second control signal when the photoelectric sensor does not emit a light beam outwards, wherein the second control signal is used for controlling the switching device to conduct a passage between the display unit in the target area and the driving power supply, and further controlling the display unit in the target area to be electrified.
In this case, the terminal device may be the terminal device 100 described in any of the above implementations.
Mode B, the terminal device further includes a plurality of switch apparatuses, the target area of the display screen includes a plurality of display units, the plurality of switch apparatuses respectively correspond to the plurality of display units one to one, and the plurality of display units are respectively connected to the driving power supply of the display screen through the respective corresponding switch apparatuses;
before the photoelectric sensor emits light beams outwards, generating a third control signal, wherein the third control signal is used for controlling each switch device to turn off a passage between the corresponding display unit and the driving power supply so as to control the power failure of the display unit in the target area of the display screen;
and generating a fourth control signal when the photoelectric sensor does not emit light beams outwards, wherein the fourth control signal is used for controlling each switch device to conduct a passage between the corresponding display unit and the driving power supply so as to control the display units in the target area of the display screen to be electrified.
In this case, the terminal device may be the terminal device 600 described in any of the above implementation manners.
Through the scheme, the terminal equipment can control the power on or power off of the display unit in the target area of the display screen according to the working state of the photoelectric sensor arranged below the display screen in the terminal equipment, so that the power off of the display unit in the target area is realized when the photoelectric sensor emits light beams outwards, and the power on of the display unit in the target area is realized when the photoelectric sensor does not emit light beams outwards. When the photoelectric sensor emits light beams outwards, the power of the display unit in the target area is cut off, namely the power of the display unit irradiated by the photoelectric sensor is cut off, so that the light beams emitted by the photoelectric sensor are irradiated on the display unit in the target area, photogenerated carriers cannot be generated in the display unit, and abnormal light spots cannot be generated on the display screen.
The display screen control method provided by the embodiment of the application is explained in detail below by taking the terminal device as a smart phone and taking the photoelectric sensor as a proximity sensor as an example.
Under the scene that a user uses the smart phone to carry out conversation, the proximity sensor is in a working state and periodically emits infrared beams outwards, when the distance between the user and the smart phone is less than a set value, before the proximity sensor emits the infrared beam outwards, an application processor in the smart phone generates the first control signal to control a display unit in a target area of a display screen of the smart phone to be powered down, the target area includes an area of the display screen to which an infrared beam emitted by a proximity sensor is irradiated, the application processor in the smartphone does not generate the second control signal when the proximity sensor emits an infrared beam outward, the display unit in the target area of the display screen of the smart phone is kept in a power-off state, so that the display screen of the smart phone is kept off, and misoperation (such as hanging up of a phone call) caused by the fact that a user touches the display screen in the call process is prevented.
When the distance between a user and the smart phone is larger than the set value, the smart phone is on, and before the proximity sensor emits an infrared beam outwards, an application processor in the smart phone generates the first control signal to control a display unit in a target area of a display screen of the smart phone to be powered off; and when the proximity sensor finishes emitting the infrared light beam, controlling a display unit in the target area to be powered on. At this time, operation timing charts of the proximity sensor and the display unit in the target area are shown in fig. 9, "IR _ ON" (high level) indicates that the proximity sensor emits infrared light, and "IR _ OFF" (low level) indicates that the proximity sensor does not emit infrared light.
When the user finishes the call, the proximity optical sensor stops working, the infrared beam does not need to be emitted outwards any more, and the display screen of the smart phone can normally display.
The display screen control method provided by the embodiment of the application is elaborated in detail by taking the terminal device as a smart phone and taking the photoelectric sensor as a face recognition sensor as an example.
In a scene that a user passes through the face recognition unlocking function of the smart phone, the face recognition sensor is in a working state and periodically emits infrared beams outwards, and a display screen of the smart phone is bright. Before the face recognition sensor emits infrared beams outwards, an application processor in the smart phone generates the first control signal to control a display unit in a target area of a display screen of the smart phone to be powered off, wherein the target area comprises an area irradiated by the infrared beams emitted by the face recognition sensor in the display screen; and when the infrared light beam is emitted by the face recognition sensor, controlling a display unit in the target area to be powered on.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.
Claims (13)
1. A terminal device is characterized by comprising a processor, a switch device, a display screen, a driving power supply and a photoelectric sensor, wherein the photoelectric sensor is positioned below the display screen, the processor is respectively connected with the display screen, the switch device and the photoelectric sensor, and the switch device is also connected with the display screen and the driving power supply;
the driving power supply is used for supplying power to the display screen through the switch device;
the photoelectric sensor is used for emitting light beams outwards under the control of the processor and detecting according to the received reflected light;
the processor is configured to generate a first control signal before the photosensor emits a light beam outward, and send the first control signal to the switching device, where the first control signal is used to control the switching device to turn off a path between the display screen and the driving power supply; when the photoelectric sensor does not emit light beams outwards, generating a second control signal, and sending the second control signal to the switch device, wherein the second control signal is used for controlling the switch device to conduct a path between the display screen and the driving power supply;
the switch device is used for switching off a path between the display screen and the driving power supply under the control of the first control signal; and under the control of the second control signal, conducting a path between the display screen and the driving power supply.
2. The terminal device of claim 1, further comprising a discharge circuit connected to the processor, the switching device, and the display screen, respectively;
the processor is further configured to: before the photoelectric sensor emits a light beam outwards, generating a third control signal and sending the third control signal to the discharge circuit, wherein the third control signal is used for controlling the discharge circuit to release electric energy on a path between the driving power supply and the display screen; when the photoelectric sensor does not emit light beams outwards, generating a fourth control signal, and sending the fourth control signal to the discharge circuit, wherein the fourth control signal is used for controlling the discharge circuit to close a passage between the discharge circuit and the driving power supply;
the discharge circuit is used for releasing electric energy on a path between the driving power supply and the display screen under the control of the third control signal; and turning off a path between the discharge circuit and the driving power supply under the control of the fourth control signal.
3. The terminal device of claim 2, wherein the discharge circuit includes a third transistor and a third resistor; a first end of the third transistor is connected with the processor, a second end of the third transistor is respectively connected with the switch device and the display screen, a third end of the third transistor is connected with a first end of the third resistor, and a second end of the third resistor is grounded;
when the first end of the third transistor receives the third control signal, the third transistor is in an on state, and when the first end of the third transistor receives the fourth control signal, the third transistor is in an off state.
4. A terminal device according to any one of claims 1-3, characterised in that the switching means comprises a first transistor, a second transistor, a first resistor and a second resistor; a first end of the first transistor is connected with a first end of the first resistor and a first end of the second resistor respectively, a second end of the first transistor is connected with the driving power supply and a second end of the first resistor respectively, a third end of the first transistor is connected with the display screen, a first end of the second transistor is connected with the processor, a second end of the second transistor is connected with a second end of the second resistor, and a third end of the second transistor is grounded;
when the first end of the second transistor receives the first control signal, the second transistor and the first transistor are in an off state, and when the first end of the second transistor receives the second control signal, the second transistor and the first transistor are in an on state.
5. The terminal device of claim 4, wherein the first transistor is a triode or a field effect transistor and the second transistor is a triode or a field effect transistor.
6. A terminal device is characterized by comprising a processor, a plurality of switch devices, a display screen, a driving power supply and a photoelectric sensor, wherein the photoelectric sensor is positioned below the display screen, a target area of the display screen comprises a plurality of display units, the switch devices respectively correspond to the display units in a one-to-one mode, and the target area comprises an area, irradiated by a light beam emitted by the photoelectric sensor, in the display screen; the processor is respectively connected with the display screen, the plurality of switch devices and the photoelectric sensor, and the plurality of display units are connected with the driving power supply through the corresponding switch devices;
the driving power supply is used for supplying power to the plurality of display units through the plurality of switch devices;
the photoelectric sensor is used for emitting light beams outwards under the control of the processor and detecting according to the received reflected light;
the processor is configured to generate a first control signal before the photosensor emits a light beam outward, and send the first control signal to each of the switch devices, where the first control signal is used to control each of the switch devices to turn off a path between a corresponding display unit and the driving power supply; when the photoelectric sensor does not emit light beams outwards, generating a second control signal, and sending the second control signal to each switch device, wherein the second control signal is used for controlling each switch device to conduct a passage between the corresponding display unit and the driving power supply;
the switch device is used for switching off a path between the corresponding display unit and the driving power supply under the control of the first control signal; and under the control of the second control signal, conducting a path between the corresponding display unit and the driving power supply.
7. The terminal device according to claim 6, wherein the display unit includes a driving unit and a light emitting unit;
the switching device comprises a first transistor and a second transistor, wherein a first end of the first transistor is respectively connected with a first end of the second transistor and the processor, a second end of the first transistor is connected with the driving power supply, a third end of the first transistor is connected with one end of the driving unit, a second end of the second transistor is connected with the other end of the driving unit, and a third end of the second transistor is connected with the light-emitting unit;
when the first ends of the first transistor and the second transistor receive the first control signal, the first transistor and the second transistor are in an off state, and when the first ends of the first transistor and the second transistor receive the second control signal, the first transistor and the second transistor are in an on state.
8. The terminal device according to claim 6, wherein the display unit includes a driving unit and a light emitting unit;
the switch device is a third transistor, the third transistor is respectively connected with the processor, the driving power supply and the driving unit, and the driving unit is connected with the light-emitting unit; or, the third transistor is respectively connected to the processor, the driving unit and the light emitting unit, and the driving unit is further connected to the driving power supply;
when the third transistor receives the first control signal, the third transistor is in an off state, and when the third transistor receives the second control signal, the third transistor is in an on state.
9. The terminal device according to claim 7 or 8, wherein the driving unit is formed of a plurality of Thin Film Transistors (TFTs), and the light emitting unit is a light emitting diode.
10. The terminal device of claim 7, wherein the first transistor is a triode or a field effect transistor and the second transistor is a triode or a field effect transistor.
11. A display screen control method is applied to a terminal device, a photoelectric sensor in the terminal device is positioned below a display screen of the terminal device, and the method comprises the following steps:
before the photoelectric sensor emits a light beam outwards, controlling a display unit in a target area of the display screen to be powered down, wherein the target area comprises an area, irradiated by the light beam emitted by the photoelectric sensor, of the display screen;
and controlling the display unit in the target area to be powered on when the photoelectric sensor does not emit light beams outwards.
12. The method of claim 11, wherein the terminal device further comprises a switching device, and the display screen is connected to a driving power supply of the display screen through the switching device;
controlling a display unit in a target area of the display screen to power down before the photosensor emits a light beam outward, comprising:
generating a first control signal before the photosensor emits a light beam outwards, wherein the first control signal is used for controlling the switch device to close a path between the display unit in the target area and the driving power supply;
when the photoelectric sensor does not emit light beams outwards, the method for controlling the display unit in the target area to be powered on comprises the following steps:
and generating a second control signal when the photoelectric sensor does not emit light beams outwards, wherein the second control signal is used for controlling the switching device to conduct a path between the display unit in the target area and the driving power supply.
13. The method according to claim 11, wherein the terminal device further comprises a plurality of switching devices, the target area of the display screen comprises a plurality of display units, the plurality of switching devices respectively correspond to the plurality of display units one by one, and the plurality of display units are respectively connected with the driving power supply of the display screen through the corresponding switching devices;
controlling a display unit in a target area of the display screen to power down before the photosensor emits a light beam outward, comprising:
before the photoelectric sensor emits a light beam outwards, generating a third control signal, wherein the third control signal is used for controlling each switch device to close a passage between the corresponding display unit and the driving power supply;
controlling the display unit in the target area to be powered on when the photoelectric sensor does not emit light beams outwards, and the method comprises the following steps:
and generating a fourth control signal when the photoelectric sensor does not emit light beams outwards, wherein the fourth control signal is used for controlling each switch device to conduct a passage between the corresponding display unit and the driving power supply.
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| JP2022001924A (en) * | 2020-06-22 | 2022-01-06 | シャープ福山セミコンダクター株式会社 | Proximity sensor and electronic apparatus |
| CN114420047B (en) * | 2020-10-28 | 2023-07-04 | 北京小米移动软件有限公司 | Display screen, display screen control method and terminal |
| CN116668581A (en) * | 2022-11-30 | 2023-08-29 | 荣耀终端有限公司 | Method and device for preventing false touch |
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