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CN109272919B - Pixel driving circuit, display substrate, terminal and driving method thereof - Google Patents

Pixel driving circuit, display substrate, terminal and driving method thereof Download PDF

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Publication number
CN109272919B
CN109272919B CN201811369279.5A CN201811369279A CN109272919B CN 109272919 B CN109272919 B CN 109272919B CN 201811369279 A CN201811369279 A CN 201811369279A CN 109272919 B CN109272919 B CN 109272919B
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China
Prior art keywords
touch
display
terminal
switch tube
reproduction
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CN201811369279.5A
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CN109272919A (en
Inventor
王锦谦
刘伟星
彭锦涛
张方振
李胜男
彭宽军
李小龙
徐智强
张宜驰
秦纬
高雪岭
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Human Computer Interaction (AREA)
  • Position Input By Displaying (AREA)
  • User Interface Of Digital Computer (AREA)

Abstract

The invention provides a pixel driving circuit, a display substrate, a terminal and a driving method thereof, relates to the technical field of display, and is used for improving the integration level of a touch reappearing device, reducing the volume of the touch reappearing device and reducing the power consumption of the touch reappearing device. Wherein the pixel driving circuit includes: the sensing component is used for sensing a first touch position of a user on the touch screen when the terminal is in a touch reproduction mode; the control component is connected with the sensing component and the driving chip and is used for acquiring sensing information of the sensing component and outputting a trigger signal containing first touch position information to the driving chip; and the display driving component is connected with the sub-pixels of the touch screen and is used for driving the sub-pixels to display a touch reproduction picture when the terminal is in a touch reproduction mode and driving the sub-pixels to display the touch display picture when the terminal is in the touch display mode. The pixel driving circuit can realize the sensing of the touch position during the tactile reproduction.

Description

Pixel driving circuit, display substrate, terminal and driving method thereof
Technical Field
The invention relates to the technical field of display, in particular to a pixel driving circuit, a display substrate, a terminal and a driving method thereof.
Background
In recent decades, haptic rendering technology has become more and more widely used in the fields of human-computer interaction and virtual reality. At present, the touch representation has important application in the fields of blind education, telemedicine and the like, and more touch representation enters the mass life with the gradual maturity of the technology.
The existing touch reappearance is mainly realized through electric stimulation or electrostatic force, and the feedback of a specific display image area to a human hand is realized through the interaction action of the human hand on a touch screen, so that the human hand can further realize the touch reappearance. However, most of the existing haptic reproduction devices include a touch screen and an external device (e.g., a haptic reproduction controller and a haptic excitation output unit) connected to the touch screen, and the external device cannot be combined with the touch screen, so that the existing haptic reproduction device is large in size, inconvenient to carry and inconvenient to operate. In addition, when the conventional tactile sensation reproduction device generates an electrical stimulus or an electrostatic force, a tactile sensation reproduction excitation signal needs to be input to the whole screen, so that the electrostatic force appears on the whole screen, and the overall power consumption of the tactile sensation reproduction device is increased.
Disclosure of Invention
To overcome the above-mentioned drawbacks of the prior art, the present invention provides a pixel driving circuit, a display substrate, a terminal and a driving method of the terminal, so as to improve the integration level of a haptic display device, reduce the size of the haptic display device, and reduce the power consumption of the haptic display device.
In order to achieve the purpose, the invention adopts the following technical scheme:
a first aspect of the present invention provides a pixel driving circuit, which is applied to a terminal, where the terminal includes a touch screen and a driving chip, and the pixel driving circuit includes: the sensing component is used for sensing a first touch position of a user on the touch screen when the terminal is in a touch reproduction mode; the control component is connected with the sensing component and the driving chip and is used for acquiring sensing information of the sensing component and outputting a trigger signal containing first touch position information to the driving chip; the display driving component is connected with the sub-pixels of the touch screen and is used for driving the sub-pixels to display a touch reproduction picture when the terminal is in a touch reproduction mode; and the display module is also used for driving the sub-pixels to display a touch display picture when the terminal is in a touch display mode.
The pixel driving circuit provided by the embodiment of the invention is applied to a terminal, when the terminal is in a touch reproduction mode, a first touch position of a user on a touch screen is sensed through a sensing part, the position information is transmitted to a control part, and the control part outputs a trigger signal to a driving chip so as to facilitate the driving chip to control the terminal to realize touch reproduction at the first touch position.
In some embodiments, the sensing component comprises a photosensor; the control component comprises an induction switch tube, the control end of the induction switch tube is connected with the second end of the photoelectric sensor, the first end of the induction switch tube is configured to receive a first clock signal, and the second end of the induction switch tube is connected with the driving chip. The inductive switch tube is opened when the photoelectric sensor outputs a low level signal; the display driving part comprises a display switch tube, the control end of the display switch tube is connected with the first end of the induction switch tube, the first end of the display switch tube is connected with the driving chip, and the second end of the display switch tube is connected with the sub-pixel; the display switch tube is closed when the first clock signal is a low level signal.
In some embodiments, the pixel driving circuit further includes a resistor, one end of the resistor is connected to the second end of the sensing switch tube, and the other end of the resistor is configured to receive a low-level signal.
In some embodiments, the sensing component comprises a piezoelectric sensor; the control component comprises an induction switch tube, the control end of the induction switch tube is configured to receive a second clock signal, the first end of the induction switch tube is connected with the second end of the piezoelectric sensor, the second end of the induction switch tube is connected with the driving chip, and the induction switch tube is turned on when the second clock signal is a low-level signal. The display driving part comprises a display switch tube, the control end of the display switch tube is connected with the control end of the induction switch tube, the first end of the display switch tube is connected with the driving chip, the second end of the display switch tube is connected with the sub-pixel, and the display switch tube is closed when the second clock signal is a low level signal.
A second aspect of the present invention provides a display substrate, including a substrate, further including: a plurality of pixel drive circuits as described in the first aspect disposed on the substrate. The touch reproduction and touch control module is arranged on one side, opposite to the substrate, of the pixel driving circuits and is used for generating a static electric field when a terminal where the display substrate is located is in a touch reproduction mode so as to enable fingers of a user to generate touch; and the touch control module is also used for detecting a second touch position of the user on the display substrate when the terminal is in a touch control display mode.
When the terminal is in a touch display mode, the touch reproduction and touch module realizes the conventional touch function of the terminal, and detects a second touch position of a user on the display substrate; when the terminal is in a touch reproduction mode, the touch reproduction and touch control module is multiplexed to realize the touch reproduction function, and the fingers of the user generate touch sense by generating an electrostatic force field. In this way, the effect of realizing two functions of a conventional touch function and a touch reproduction function by using one touch screen is achieved, equipment such as a touch excitation output unit is not required to be arranged outside the touch screen, the integration level of the touch reproduction device is improved, and the size of the touch reproduction device is reduced. Meanwhile, according to the information of the first touch position acquired by the pixel driving circuit, the touch sense reproduction and touch control module only generates a static electric field at the first touch position, and voltage does not need to be input into the whole touch control screen to enable the touch control screen to generate the static electric field, so that the power consumption is saved.
In some embodiments, each of the pixel driving circuits includes a sensing component, a sensing switch tube and a display switch tube; the sensing component comprises a first electrode, a second electrode and a sensing electrode arranged between the first electrode and the second electrode. The sensing electrode is made of a photoelectric material, the first electrode is electrically connected with a grid electrode of the sensing switch tube, and a source electrode of the sensing switch tube is electrically connected with a grid electrode of the display switch tube; or the sensing electrode is made of a piezoelectric material, the first electrode is electrically connected with the source electrode of the sensing switch tube, and the grid electrode of the sensing switch tube is electrically connected with the grid electrode of the display switch tube.
The third aspect of the present invention provides a terminal, which includes a driving chip, and a touch screen, a touch sense reproduction driver and a touch controller respectively connected to the driving chip, wherein the touch sense reproduction driver and the touch controller are further respectively connected to the touch screen.
The driving chip is used for receiving a working mode instruction given by a user and determining whether the terminal enters a touch sense reproduction mode or a touch control display mode: if the terminal is determined to enter the touch reproduction mode, sending a touch reproduction control signal to the touch screen; and if the terminal is determined to enter the touch display mode, sending a touch display control signal to the touch screen and the touch controller.
The touch screen is used for receiving the touch reproduction control signal, displaying a touch reproduction picture, sensing a first touch position of a user on the touch screen, and sending a trigger signal containing first touch position information to the drive chip; and the touch control display control module is also used for receiving the touch control display control signal and displaying a touch control display picture.
The driving chip is further used for receiving the trigger signal and sending out an excitation signal containing the first touch position information to the tactile sense reproduction driver.
The touch sense reproduction driver is used for receiving the excitation signal, controlling the touch screen to generate a static electric force field at the first touch position and enabling a finger of a user to generate a touch sense;
the touch controller is used for receiving the touch display control signal and controlling the touch screen to detect a second touch position of the user on the touch screen.
The beneficial effects of the terminal are the same as those of the display substrate, and are not described herein again.
In some embodiments, the terminal further comprises: a first switch connected between the haptic rendering driver and the touch screen; the second switch is connected between the touch controller and the touch screen; the switching controller is respectively connected with the first switch and the second switch, is also connected with the driving chip and is used for receiving the touch reappearance control signal and controlling the first switch to be closed and the second switch to be opened; and the touch display control circuit is also used for receiving the touch display control signal, controlling the first switch to be switched off and the second switch to be switched on.
In some embodiments, the touch screen further includes a 3D touch sensor connected to the driving chip, and configured to sense a pressing parameter of the touch screen pressed by the user, and upload the sensed pressing parameter to the driving chip as a working mode instruction issued by the user; wherein the compression parameter comprises a pressure value and/or a compression duration. The driving chip is further used for receiving the pressing parameters and judging whether the pressing parameters are within a preset range: if yes, the terminal is judged to enter a touch reproduction mode, and a touch reproduction control signal is sent out; and if not, judging that the terminal enters a touch display mode, and sending a touch display control signal.
A fourth aspect of the present invention provides a driving method of a terminal, which is applied to the terminal according to the third aspect, the driving method of the terminal including:
the driving chip receives a working mode instruction given by a user and determines whether the terminal enters a touch sense reproduction mode or a touch control display mode.
In the haptic rendering mode: the driving chip sends a touch reappearing control signal to the touch screen; the touch screen receives the touch reappearing control signal, displays a touch reappearing picture, induces a first touch position of a user on the touch screen, and sends a trigger signal containing first touch position information to the driving chip; the driving chip receives the trigger signal and sends out an excitation signal containing the first touch position information to a tactile reproduction driver; and the tactile sense reproduction driver receives the excitation signal and controls the touch screen to generate a static electric force field at the first touch position so as to generate a tactile sense for the finger of the user.
In a touch display mode: the driving chip sends a touch display control signal to the touch screen and the touch controller; the touch screen receives the touch display control signal and displays a touch display picture; and the touch controller receives the touch display control signal and controls the touch screen to detect a second touch position of the user on the touch screen.
The beneficial effects of the driving method of the terminal are the same as those of the terminal, and are not described again here.
In some embodiments, in the haptic reproduction mode, a duration of the electrostatic force field alternates with a display period of the haptic reproduction screen in the haptic reproduction at the first touch position.
In some embodiments, the terminal further comprises a 3D touch sensor; before the step of receiving a working mode instruction issued by a user by the driving chip, the driving method of the terminal further comprises the following steps: the 3D touch sensor senses a pressing parameter of a user pressing the touch screen, and the sensed pressing parameter is used as a working mode instruction issued by the user and is uploaded to the driving chip; wherein the compression parameter comprises a pressure value and/or a compression time length.
The step of determining whether the terminal enters the haptic reproduction mode or the touch display mode includes: the driving chip receives the pressing parameters and judges whether the pressing parameters are within a preset range: if yes, judging that the terminal enters a touch reproduction mode; and if not, judging that the terminal enters a touch display mode.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1a is a schematic plan view of a touch electrode layer;
FIG. 1b is a cross-sectional view taken along section line SS' of FIG. 1 a;
fig. 2 is a basic structure diagram of a pixel driving circuit according to an embodiment of the invention;
fig. 3 is a first specific structural diagram of a pixel driving circuit according to an embodiment of the invention;
fig. 4 is a second specific structure diagram of the pixel driving circuit according to the embodiment of the invention;
fig. 5 is a third specific structural diagram of a pixel driving circuit according to an embodiment of the invention;
FIG. 6 is a cross-sectional view of a display substrate according to an embodiment of the present invention;
fig. 7 is a first structural diagram of a terminal according to an embodiment of the present invention;
fig. 8 is a second structural diagram of a terminal according to an embodiment of the present invention;
fig. 9 is a third structural diagram of a terminal according to an embodiment of the present invention;
fig. 10 is a first flowchart of a driving method of a terminal according to an embodiment of the present invention;
fig. 11 is a second flowchart of a driving method of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to clearly describe the technical scheme of the present invention, a structure of the touch screen according to the present invention is briefly introduced first. As shown in fig. 1a and fig. 1b, the touch panel includes a substrate 1 and a touch functional module 2 disposed on the substrate 1. The touch control functional module 2 includes a connection electrode layer 3 disposed on one side of the substrate 1, an insulating layer 4 covering the connection electrode layer 3, and a touch sensing layer 5 disposed on a side of the insulating layer 4 opposite to the substrate 1. Wherein the connection electrode layer 3 includes a plurality of connection electrodes 31; the touch sensing layer 5 includes a plurality of first touch electrodes 51 and a plurality of second touch electrodes 52. The plurality of first touch electrodes 51 are arranged in a plurality of rows, and the first touch electrodes 51 of each row are connected in series to form a plurality of control lines (T) along the row directionX) (ii) a The plurality of second touch electrodes 52 are arranged in a plurality of rows, and in the second touch electrodes 52 in each row, two adjacent second touch electrodes 52 are connected to the connecting electrode 31 below through via holes, so that the second touch electrodes 52 in each row are connected in series, thereby forming a plurality of sensing lines (R) along the row directionX). A capacitance can be formed between the adjacent first touch electrode 51 and the second touch electrode 52, and when a human hand touches the touch screen, the capacitance changes, and the touch position is located by sensing the change of the capacitance.
It should be noted that, in the following description of the embodiments of the present invention, the internal structure and the operation principle of the touch screen may be understood by referring to the above description. However, it should be noted that the internal structure and the operation principle of the touch screen according to the embodiments of the present invention are not limited thereto, and the internal structure and the operation principle of the touch screen also have various implementation manners, which are not listed here.
In order to solve the defects in the prior art mentioned in the background art, the core idea of the invention is as follows: the touch control function module 2 in the touch control screen is multiplexed, when the touch control screen is in a touch control display mode, the conventional touch control function is realized, and when the touch control screen is in a touch control reproduction mode, the touch control reproduction function is realized, so that the effect of realizing the conventional touch control function and the touch control reproduction function by using one touch control screen can be achieved, equipment such as a touch control excitation output unit is not required to be arranged outside the touch control screen, the integration level of the touch control reproduction device is improved, and the volume of the touch control reproduction device is reduced. In addition, the touch screen is provided with the sensing structure for sensing and positioning the touch position in the touch reproduction mode, so that a static electric field is output to the touch position in a targeted manner, a user feels the touch, and the power consumption is saved.
An embodiment of the present invention provides a pixel driving circuit 100, as shown in fig. 2 and fig. 7, the pixel driving circuit 100 is applied in a terminal 300, the terminal 300 includes a touch screen 302 and a driving chip 301, the pixel driving circuit 100 includes: a sensing part 101, a control part 102, and a display driving part 103.
The sensing part 101 is configured to sense a first touch position of the touch screen 302 by the user when the terminal 300 is in the tactile representation mode.
The control unit 102 is connected to the sensing unit 101, and the control unit 102 is further connected to the driving chip 301, and is configured to acquire sensing information of the sensing unit 101 and output a trigger signal including first touch position information to the driving chip 301.
The display driving part 103 is connected with the driving chip 301, the display driving part 103 is further connected with the sub-pixel 3021 of the touch screen 302, and is used for driving the sub-pixel 3021 to display a touch reproduction picture when the terminal 300 is in the touch reproduction mode; and is further configured to drive the sub-pixel 3021 to display a touch display screen when the terminal 300 is in the touch display mode.
It should be noted that, in the above embodiment, each sub-pixel 3021 in the touch screen 302 corresponds to one pixel driving circuit 100. The touch panel 302 generally includes a plurality of sub-pixels 3021, and therefore also includes a plurality of pixel driving circuits 100 corresponding to the plurality of sub-pixels 3021 one by one, and each pixel driving circuit 100 drives the corresponding sub-pixel 3021.
The "haptic reproduction screen" is a screen displayed on the touch panel 302 in the haptic reproduction mode, and includes a predetermined area in which haptic reproduction is possible and a predetermined area in which haptic reproduction is not possible.
Here, the "area capable of tactile sensation reproduction" refers to an area capable of tactile sensation reproduction in the content displayed on the tactile sensation reproduction screen. For example, if the touch reproduction screen displays a pen, the area where the pen is located is the area where the touch reproduction can be performed. When the sub-pixel 3021 included in the area capable of performing tactile sensation reproduction is touched by a user, the sensing part 101 in the pixel driving circuit 100 corresponding to the sub-pixel may sense that the sub-pixel 3021 is touched by the user and send a sensing signal to the driving chip 301.
The "area where the tactile sensation reproduction is not possible" refers to an area where nothing is shown in the tactile sensation reproduction screen (for example, an area where the pen is not located) or an area where the pen is located and which is not touched, and these areas do not need to be subjected to the tactile sensation reproduction. When the sub-pixel 3021 included in the area where the tactile sensation is not reproducible is touched by the user, the sensing part 101 cannot sense that the sub-pixel 3021 is touched by the user, or the sensing part 101 can sense that the sub-pixel 3021 is touched by the user and output a sensing signal, but the signal cannot be transmitted to the driving chip 301.
The "first touch position" refers to a position where the user touches the touch screen 302 and the position information can be transmitted to the driving chip 301 when the terminal 300 is in the haptic reproduction mode, that is, a position where the haptic reproduction is possible and touched in the haptic reproduction screen. When the user touches a certain position or certain positions of the area which can be subjected to the tactile sensation reproduction in the tactile sensation reproduction screen, the certain position or certain positions are positions which can be subjected to the tactile sensation reproduction and are touched in the tactile sensation reproduction screen, namely the first touch positions. For example, a pen is displayed in a region where the tactile sensation can be reproduced on the tactile sensation reproduction screen, and the user can feel the shape of the pen corresponding position at the "first touch position" by the tactile sensation reproduction. The sensing of the first touch position is achieved by means of the sensing component 101.
The touch display screen refers to a screen displayed by the touch screen 302 in the touch display mode, and the screen is not different from a screen displayed by a common display screen and is a normal screen.
In the above embodiment, the touch action of the user touching the touch screen 302 may be a pressure-free touch or a pressure touch.
The pixel driving circuit 100 provided by the embodiment of the invention is applied to the terminal 300, when the terminal 300 is in the touch reproduction mode, the sensing component 101 senses a first touch position of a user on the touch screen 302, and transmits position information to the control component 102, and the control component 102 outputs a trigger signal to the driving chip 301, so that the driving chip 301 controls other modules in the terminal 300 to realize touch reproduction at the first touch position, and therefore, the pixel driving circuit 100 realizes positioning of the touch screen position touched by a human hand in the touch reproduction mode, so that the driving chip can directionally control the first touch position to generate electrostatic force for touch reproduction, the whole screen does not need to generate the electrostatic force required by touch reproduction, and power consumption of the terminal is saved.
In some embodiments, as shown in fig. 3, the sensing part 101 includes a photosensor 11, the control part 102 includes a sensing switch tube T1, and the display driving part 103 includes a display switch tube T2. The control end of the sensing switch tube T1 is connected to the second end of the photosensor 11, the first end of the sensing switch tube T1 is configured to receive the first clock signal CK1, the second end of the sensing switch tube T1 is connected to the driving chip 301, and the sensing switch tube T1 is turned on when the photosensor 11 outputs a low-level signal and turned off when the photosensor 11 outputs a high-level signal. The control terminal of the display switch transistor T2 is connected to the first terminal of the sensing switch transistor T1, the first terminal of the display switch transistor T2 is connected to the driving chip 301, and the second terminal of the display switch transistor T2 is connected to the sub-pixel 3021.
The display switch T2 is turned on when the first clock signal CK1 is a high-level signal, and turned off when the first clock signal CK1 is a low-level signal. Illustratively, the type of the induction switch tube is P-type, and the type of the display switch tube is N-type.
In the above embodiment, the photosensor 11 is a device that converts an optical signal into an electrical signal, and the operation principle thereof is based on the photoelectric effect. When the photoelectric sensor 11 is irradiated by light, photons with certain energy bombard the photoelectric sensor 11, the photon energy is transferred to electrons in the photoelectric sensor 11, and the state of the electrons can be changed correspondingly after the electrons obtain energy, so that the photoelectric sensor 11 generates a corresponding electric effect. Illustratively, the photosensor 11 is a photodiode, and when there is no light, the current generated by the photodiode is small, which is called dark current, and when there is light, the carriers in the photodiode are excited to generate electron holes, which form a current much larger than the dark current, which is called photocurrent.
The operation principle of the pixel driving circuit 100 will be described below by taking an example in which the tactile sense reproduction screen is a black-and-white screen, an image composed of dark pixels is set as an area where tactile sense reproduction is possible, the type of the sensing switch tube is P-type, and the type of the display switch tube is N-type.
In the tactile sense reproduction mode, the display switch tube T2 in the display driving section 103 drives the sub-pixel 3021 to display a tactile sense reproduction picture in black and white under the action of the driving chip 301, the sub-pixel 3021 includes a bright pixel and a dark pixel, and an image composed of the dark pixels is set as an area where tactile sense reproduction is possible.
When a person touches the bright pixel, the bright pixel emits light, and even if the person touches the pixel and blocks light entering the pixel from the outside, the photoelectric sensor 11 will sense the light from the bright pixel, and the photoelectric sensor 11 will still generate a photocurrent, so that the second end of the photoelectric sensor 11 outputs a high-level signal, and the high-level signal is transmitted to the control end of the sensing switch tube T1. Since the sensing switch tube T1 is set to be turned on when the photosensor 11 outputs a low level signal, the sensing switch tube T1 is in a closed state, the first clock signal CK1 received by the first end thereof cannot pass through the sensing switch tube T1, and the Trigger signal Trigger cannot be output to the driving chip 301.
When a human hand touches the dark pixel, the light entering the dark pixel from the outside is blocked, so that the photo sensor 11 does not generate a photocurrent, but generates a small dark current, so that the second end of the photo sensor 11 outputs a low-level signal, and the low-level signal is transmitted to the control end of the sensing switch tube T1. Since the sense switch transistor T1 is set to be turned on when the photosensor 11 outputs a low-level signal, the sense switch transistor T1 is in an on state, and the sense switch transistor T1 can output the first clock signal CK1 received by the first end thereof to the driving chip 301 as the Trigger signal Trigger. When receiving the trigger signal including the first touch position information, the driver chip 301 may control the terminal 300 to output a static electric field to the first touch position, thereby achieving a haptic sense reproduction function and saving power consumption.
When the sensing part 101 includes the photosensor 11 and the tactile sensation reproduction picture is a black-and-white picture, the area of the area composed of dark pixels in the tactile sensation reproduction picture is at least larger than 0.5cm2. If the area of the region composed of dark pixels is too small, the dark pixels are affected by surrounding bright pixels. The light emitted by the bright pixel is emitted into the photo sensor 11 in the pixel driving circuit 100 corresponding to the dark pixel, so that the photo sensor 11 generates a photo current, and the second end outputs a high-level signal, so that the sensing switch tube T1 is closed, and the Trigger signal Trigger cannot be output to the driving chip 301, and the touch reproduction cannot be realized.
Setting the area composed of dark pixels to be at least more than 0.5cm2Therefore, the middle dark pixel in the area formed by the dark pixels is not affected by the surrounding bright pixels, when a finger touches the touch area, the light emitted from the outside is blocked, the photoelectric sensor 11 outputs a low-level signal, and then the inductive switch tube T1 is turned on to output the Trigger signal Trigger to the driving chip 301, so that the touch reproduction is realized at the touch position.
In the above embodiment, the control end of the display switch tube T2 is connected to the first end of the inductive switch tube T1, and the control end of the display switch tube T2 and the first end of the inductive switch tube T1 multiplex a first clock signal CK1, so that it is not necessary to separately input a clock signal to the inductive switch tube T1, thereby simplifying the circuit structure and saving the circuit system resources.
As a possible design, referring to fig. 3 again, the pixel driving circuit 100 further includes a resistor R, one end of the resistor R is connected to the second end of the sensing switch tube T1, and the other end is configured to receive the low level signal ref. Through setting up like this, the one end that is used for receiving the low level of resistance R is the low potential, because resistance R has produced the pressure differential for the resistance R is raised with the electric potential of the other end that the second end of inductive switch pipe T1 links to each other, and the electric potential of raising is less than the low level signal electric potential of first clock signal, makes first clock signal CK1 can regard as Trigger signal Trigger transmission to drive chip 301 when inductive switch pipe T1 opens.
In other embodiments, as shown in fig. 4, the sensing part 101 includes the piezoelectric sensor 12, the control part 102 includes the sensing switch tube T1, and the display driving part 103 includes the display switch tube T2. The control terminal of the inductive switch tube T1 is configured to receive the second clock signal CK2, the first terminal of the inductive switch tube is connected to the second terminal of the piezoelectric sensor 12, the second terminal of the inductive switch tube is connected to the driving chip 301, the inductive switch tube T1 is turned on when the second clock signal CK2 is a low-level signal, and is turned off when the second clock signal CK2 is a high-level signal, and illustratively, the inductive switch tube T1 is P-type. A control terminal of the display switch transistor T2 is connected to a control terminal of the sensing switch transistor T1, a first terminal of the display switch transistor T2 is connected to the driving chip 301, a second terminal of the display switch transistor T2 is connected to the sub-pixel 3021, the display switch transistor T2 is turned off when the second clock signal CK2 is a low level signal and turned on when the second clock signal CK2 is a high level signal, and illustratively, the display switch transistor T2 is N-type.
In the above embodiment, the piezoelectric sensor 12 is a sensor made by using the piezoelectric effect generated by applying a force to some dielectric medium. The piezoelectric effect refers to a phenomenon that when some dielectrics are deformed (including bending and stretching deformation) by an external force in a certain direction, charges are generated on the surfaces of the dielectrics due to a polarization phenomenon of internal charges. The piezoelectric sensor is illustratively a piezoelectric film, and when pressure is applied to the piezoelectric sensor, the piezoelectric film deforms, so that internal charges of the piezoelectric film are polarized, and positive and negative opposite charges are generated on the surface of the piezoelectric film.
The operation principle of the pixel driving circuit 100 will be described below by taking an example in which the tactile sense reproduction screen is a black-and-white screen, an image composed of dark pixels is set as an area where tactile sense reproduction is possible, the type of the sensing switch tube is P-type, and the type of the display switch tube is N-type.
In the tactile reproduction mode, the display switching tube T2 in the display driving section 103 drives the sub-pixel 3021 to display a tactile reproduction picture, which is a black and white picture, under the action of the driving chip 301, and the sub-pixel 3021 includes a bright pixel and a dark pixel. An image composed of dark pixels is set as an area that can be reproduced by touch.
Each sub-pixel 3021 corresponds to one pixel driving circuit 100, and in the case that one sub-pixel 3021 is a dark pixel, the circuit work flow is as follows: under the control of the driving chip 301, the second clock signal CK2 is asserted to a low level, the display switch T2 is turned off, and the data signal date cannot be transmitted to the sub-pixel 3021, which forms a dark pixel. When a finger presses the dark pixel, the piezoelectric sensor 12 is deformed by pressure, the internal charge is polarized, the surface of the piezoelectric sensor 12 generates charge, and the second end outputs an electrical signal to the first end of the inductive switch tube T1. Since the second clock signal CK2 is a low-level signal and the sensing switch tube T1 is turned on, the electric signal output by the piezoelectric sensor 12 to the sensing switch tube T1 can be transmitted to the driving chip 301 as a Trigger signal Trigger, which contains the first touch position information, i.e., the information that the dark pixel is touched. After receiving the Trigger signal Trigger, the driving chip 301 may control the terminal 300 to output a static electric field for the first touch position, that is, the dark pixel, so as to implement touch reproduction, and enable a human hand to generate a touch sense.
In the case where one sub-pixel 3021 is a bright pixel, the circuit workflow is: under the control of the driving chip 301, the second clock signal CK2 is a high level signal, the display switch tube T2 is turned on, and the data signal date is transmitted to the sub-pixel 3021, which emits light to form a bright pixel. When a finger presses the bright pixel, the piezoelectric sensor 12 is deformed by pressure, the internal charge is polarized, the surface of the piezoelectric sensor 12 generates charge, and the second end outputs an electrical signal to the first end of the inductive switch tube T1. Since the second clock signal CK2 is a high-level signal and the sensing switch tube T1 is in a closed state, the electrical signal output by the piezoelectric sensor 12 cannot be transmitted to the driving chip 301 through the sensing switch tube T1, the driving chip 301 does not process the electrical signal, and no touch sensation is generated when a human hand touches a bright pixel.
As a possible design, as shown in fig. 5, the sensing part 101 includes the piezoelectric sensor 12, the control part 102 includes the sensing switch tube T1, and the display driving part 103 includes the display switch tube T2. The control terminal of the inductive switch tube T1 is configured to receive the second clock signal CK2, the first terminal of the inductive switch tube is connected to the second terminal of the piezoelectric sensor 12, the second terminal of the inductive switch tube is connected to the driving chip 301, the inductive switch tube T1 is turned off when the second clock signal CK2 is a low-level signal, and is turned on when the second clock signal CK2 is a high-level signal, and the inductive switch tube T1 is exemplarily N-type. The control terminal of the display switch transistor T2 is connected to the control terminal of the sensing switch transistor T1, the first terminal of the display switch transistor T2 is connected to the driving chip 301, the second terminal of the display switch transistor T2 is connected to the sub-pixel 3021, the display switch transistor T2 is turned on when the second clock signal is a low level signal and turned off when the second clock signal is a high level signal, and the display switch transistor T2 is exemplarily P-type.
The connection relationship of the components of the pixel driving circuit 100 shown in fig. 5 is the same as that of the components of the pixel driving circuit 100 shown in fig. 4, and the two structures are different in that the types of the sensing switch tube T1 and the display switch tube T2 are opposite. In the pixel driving circuit 100 shown in fig. 5, in the tactile sensation reproduction mode, the tactile sensation reproduction screen is a black and white screen, and an image composed of dark pixels is set as an area where the tactile sensation can be reproduced, and when the second clock signal CK2 is a high-level signal and a dark pixel is pressed by a human hand, the first touch position information sensed by the piezoelectric sensor 12 can be transmitted to the driving chip 301, and the tactile sensation reproduction can be realized at the position. The operation principle of the pixel driving circuit 100 having this structure can be referred to the operation principle of the pixel driving circuit 100 shown in fig. 4, and is the same except that the levels of the second clock signal CK2 are not the same.
The pixel driving circuit 100 according to the embodiment of the present invention has a main function of positioning the touch screen 302 touched by a human hand through the sensing component 101 in the touch reproduction mode, and transmitting the touch position information of the preset area capable of performing touch reproduction to the driving chip 301 through the driving and controlling of the control component 102, instead of transmitting the touch position information of the preset area incapable of performing touch reproduction to the driving chip 301, so as to facilitate accurate output of a static electric field in the terminal 300 and save power consumption.
Another embodiment of the present invention provides a display substrate 200, as shown in fig. 6, the display substrate 200 includes a substrate 201, and a plurality of pixel driving circuits 100 and a touch sense reproduction and touch module 202 disposed on the substrate 201. The pixel driving circuit 100 is the pixel driving circuit 100 according to the above embodiments. The touch sense reproduction and touch control module 202 is disposed on a side of the plurality of pixel driving circuits 100 opposite to the substrate 201, and is configured to generate a static electric field to generate a touch sense to a finger of a user when the terminal 300 on which the display substrate 200 is disposed is in a touch sense reproduction mode; and is also used for detecting a second touch position of the user on the display substrate 200 when the terminal 300 is in the touch display mode.
It should be noted that the "second touch position" refers to a position where the user touches the touch screen 302 when the terminal 300 is in the touch display mode, and the sensing of the second touch position is realized by the touch sense reproduction and touch module 202 in the touch screen 302.
In the above embodiments, the structure of the touch sense reproduction and touch control module 202 can refer to the structure of the touch control function module in the conventional touch control screen, and for example, the structure of the touch sense reproduction and touch control module 202 can refer to the structure of the touch control function module 2 shown in fig. 1, which will not be described again.
When the terminal 300 is in the touch display mode, the touch reproduction and touch module 202 implements a conventional touch function thereof, and detects a second touch position of the user on the display substrate; when the terminal 300 is in the haptic reproduction mode, the haptic reproduction and touch module 202 is multiplexed to implement a haptic reproduction function, which generates a haptic sense to a user's finger by generating an electrostatic force field.
In this way, the effect of realizing two functions of a conventional touch function and a touch reproduction function by using one touch screen is achieved, equipment such as a touch excitation output unit is not required to be arranged outside the touch screen, the integration level of the touch reproduction device is improved, and the size of the touch reproduction device is reduced. Meanwhile, according to the information of the first touch position acquired by the pixel driving circuit 100, the touch sense reproduction and touch control module 202 generates a static electric field only at the first touch position, and voltage does not need to be input to the whole touch screen 302 to generate the static electric field, so that power consumption is saved.
In some embodiments, the display substrate 200 further includes a buffer layer 204, a semiconductor layer 205, a first gate insulating layer 206, a gate metal layer 207, an interlayer insulating layer 210, a first electrode layer 211, a source-drain metal layer 212, a sensing layer 213, a planarization layer 214, and a second electrode layer 215 disposed on the substrate 201.
The semiconductor layer 205 includes the active layer 2051 of the sensing switch transistor T1 and the active layer 2052 of the display switch transistor T2, so that the active layer 2051 of the sensing switch transistor T1 and the active layer 2052 of the display switch transistor T2 can be formed in the same patterning process, thereby simplifying the process steps.
The gate metal layer 207 includes a gate g of the sensing switch transistor T11And a first gate g of the display switch transistor T221So that the gate g of the sensing switch tube T1 is induced1And a first gate g of the display switch transistor T221The method is formed under the same patterning process, so that the process steps are simplified.
Source drain metal layer 212 includes source s of sense switch transistor T11And a drain electrode d1And the source s of the display switch transistor T22And a drain electrode d2So that the source s of the sensing switch tube T1 is sensed1And a drain electrode d1And the source s of the display switch transistor T22And a drain electrode d2The method is formed under the same patterning process, so that the process steps are simplified.
Fig. 6 shows a structure in which the semiconductor layer 205 is located below the gate metal layer 207, and in this design, the sensing switch T1 and the display switch T2 are in a top-gate structure. In other embodiments, the sensing switch tube T1 and the display switch tube T2 may also be a bottom gate structure in which the semiconductor layer 205 is located above the gate metal layer 207.
As a possible design, the switch transistor T2 is shown to include a first gate g21In addition, a second grid g can be included22The second grid g22Can be arranged on the first grid g21A side facing away from the substrate 201, and a first gate g21And a second gate g22Electrically insulated from each other by a second gate insulation layer 208. Thus, the display switch tube T2 has a double-gate structure, which can effectively improve the mobility of carriers and improve the performance of the display switch tube T2.
As a possible design, referring to fig. 6 again, in the pixel driving circuit 100 corresponding to the above description, each pixel driving circuit 100 includes a sensing component 101, a sensing switch T1 and a display switch T2. In the display substrate 200, the sensing part 101 includes a first electrode 2111, a second electrode 2151, and a sensing electrode 2131 disposed between the first electrode 2111 and the second electrode 2151.
The above-mentioned display substrate 200 includes the first electrode layer 211 including the pattern of the first electrode 2111, the second electrode layer 215 including the pattern of the second electrode 2151, and the sensing layer 213 including the pattern of the sensing electrode 2131.
The sensing component 101 can be configured as a piezoelectric sensor 12, in which case the sensing electrode 2131 of the sensing component 101 is made of a piezoelectric material, and the first electrode 2111 and the source s of the sensing switch tube T1 are connected to the sensing electrode 21111Electrically connected to, and sensing, the grid g of switch T11And the grid g of the display switch tube T221And (6) electrically connecting. In this way, the output end of the sensing part 101 can be electrically connected with the input end of the sensing switch tube T1, and the control end of the sensing switch T1 is electrically connected with the control end of the display switch tube T2.
Alternatively, the sensing component 101 may be configured as a photoelectric sensor 11, in which case the sensing electrode 2131 of the sensing component 101 is made of a photoelectric material, and the first electrode 2111 and the gate g of the sensing switch tube T1 are made of a photoelectric material1Electrically connected to, and sensing the source s of the switch transistor T11And the grid g of the display switch tube T221And (6) electrically connecting. In this way, the output end of the photoelectric sensor 11 can be electrically connected with the control end of the inductive switch tube T1, and the input end of the inductive switch tube T1 is electrically connected with the control end of the display switch tube T2.
The display substrate 200 may be an active light emitting display substrate. In this case, the display substrate 200 further includes a light emitting part 203, and the light emitting part 203 includes an anode 2152, a cathode 2171, and a cathode 2171 provided between the anode 2152 and the cathode 2171The light-emitting electrode 2033, the anode 2171 and the drain d of the display switch tube T2 are connected via2In this way, the display switch tube T2 can drive the light emitting component 203 to emit light, so as to drive the touch panel 302 to display images.
The second electrode layer 215 includes the anode 2152 of the light emitting component 203 in addition to the second electrode 2151 of the sensing component 101, and the anode 2152 of the light emitting component 203 and the second electrode 1151 of the sensing component 101 are disposed in the same layer, and are formed in the same patterning process, thereby simplifying the process steps.
In some embodiments, the display substrate 200 further includes a pixel defining layer 216 covering the second electrode 215 layer on the side facing away from the substrate 201, the pixel defining layer 216 defines the position of the light-emitting electrode 2033 in the area of each sub-pixel 3021, a via hole is provided at the position of the light-emitting electrode 2033, and the light-emitting electrode 2033 is located in the pixel defining the via hole and at the position of the periphery of the via hole.
The display substrate 200 further includes a spacer 217 disposed on a side of the pixel defining layer 216 opposite to the substrate 201, a flat layer 218 covering a side of the cathode layer 217 opposite to the substrate 201, and at least one packaging film 219. The spacer 217 is used to prevent damage to the display substrate 200 due to external pressure, and may protect the light emitting part 203 in the display substrate 200, for example. The planarization layer 218 serves to planarize the surface of the display substrate, improving film quality. The encapsulation film 219 is used to isolate oxygen and water in the external environment from entering the display substrate, and protects the light-emitting electrode 2033.
The embodiment of the present invention further provides a terminal 300, as shown in fig. 7, including a driving chip 301, and a touch screen 302, a touch sense reproduction driver 303 and a touch controller 304 respectively connected to the driving chip 301, wherein the touch sense reproduction driver 303 and the touch controller 304 are further respectively connected to the touch screen 302.
The driving chip 301 is configured to receive a working mode command issued by a user, and determine whether the terminal 300 enters the touch-sensing reproduction mode or the touch-sensing display mode: if it is determined that the terminal 300 enters the haptic reproduction mode, transmitting a haptic reproduction control signal to the touch screen 302; if it is determined that the terminal 300 enters the touch display mode, a touch display control signal is sent to the touch screen 302 and the touch controller 304.
The touch screen 302 is configured to receive a touch reproduction control signal, display a touch reproduction picture, sense a first touch position of a user on the touch screen 302, and send a trigger signal including information of the first touch position to the driver chip 301; and the touch control display control module is also used for receiving the touch control display control signal and displaying a touch control display picture.
The driving chip 301 is further configured to receive the trigger signal and send an excitation signal containing the first touch position information to the haptic reproduction driver 303. The touch sense reproduction driver 303 is used for receiving the excitation signal, controlling the touch screen 302 to generate a static electric force field at the first touch position, and generating a touch sense for the finger of the user; the touch controller 304 is configured to receive the touch display control signal, and control the touch screen 302 to detect a second touch position of the user on the touch screen 302.
The pixel driving circuit 100 provided by the embodiment of the invention is applied to the terminal 300, so that in the touch reproduction mode, the sensing component 101 in the pixel driving circuit 100 can detect the position where the user touches the touch screen 302, and transmit the position information to the driving chip 301 through the control component, and the driving chip 301 controls the touch reproduction driver 303 to output a voltage to the touch reproduction and touch module 202 in the touch screen 302, so that the touch reproduction and touch module 202 forms an electrostatic force field at the first touch position to realize touch reproduction. Meanwhile, the terminal 300 may also implement a touch display function, and may be normally used in a touch display mode.
In some embodiments, as shown in fig. 8, the terminal 300 further includes: a first switch 305 connected between the haptic reproduction driver 303 and the touch screen 302; a second switch 306 connected between the touch controller 304 and the touch screen 302; a switching controller 307 connected to the first switch 305 and the second switch 306, respectively, wherein the switching controller 307 is further connected to the driving chip 301 for receiving the haptic rendering control signal and controlling the first switch 305 to be closed and the second switch 306 to be opened; and is also used for receiving a touch display control signal, and controlling the first switch 305 to be opened and the second switch 306 to be closed.
In the above embodiment, the driving chip 301 controls the switching controller 307, and the switching controller 307 controls the first switch 305 and the second switch 306 to open and close, so that the haptic reproduction driver 303 and the touch controller 304 can connect and disconnect the channel for outputting the control signal to the touch screen 302 in the two modes, i.e., the haptic reproduction mode and the touch display mode, so that the haptic reproduction function and the touch display function can be performed smoothly without affecting each other.
In some embodiments, as shown in fig. 9, the touch screen 302 further includes a 3D touch sensor 308 connected to the driving chip 301, and configured to sense a pressing parameter when the user presses the touch screen 302, and transmit the sensed pressing parameter to the driving chip 301 as a working mode command issued by the user; wherein the compression parameter comprises a pressure value and/or a compression time period. The driving chip 301 is further configured to receive a pressing parameter, and determine whether the pressing parameter is within a preset range: if yes, the terminal 300 is judged to enter the touch reproduction mode and sends out a touch reproduction control signal; if not, the terminal 300 enters a touch display mode and sends a touch display control signal.
It should be noted that the term "preset range" herein refers to: when the pressing parameter is a pressure value X, assume that the pressure threshold value for determining whether to enter the touch reproduction mode or the touch display mode is X1Then "the predetermined range" can be X1≤X＜X2Wherein X is2May be less than or equal to + ∞ and greater than X1A value of (d); alternatively, the "preset range" may be X0≤X＜X1Wherein X is0It is preferably 0 or more and less than X1A value of (2). When the pressing parameter is a pressing time period T, assume that the pressing time period critical value for determining whether to enter the touch reproduction mode or the touch display mode is T1Then the "predetermined range" may be T1≤T＜T2Wherein T is2It may be less than or equal to + ∞ and greater than T1A value of (d); alternatively, the "preset range" may be T0≤T＜T1Wherein T is0It may be preferably greater than or equal to 0 and less than T1A value of (2).
By pressing the 3D touch sensor 308, the user can select whether to enter the haptic reproduction mode or the touch display mode as desired, and in the corresponding mode, the corresponding function is implemented.
In the terminal 300 provided in the embodiment of the present invention, the haptic reproduction driver 303 has two control lines (T) for respectively driving the display screen 302X) And induction line (R)X) The two tactile sense reproduction drivers 303 are directed to the control line (T) respectivelyX) And induction line (R)X) And outputting voltage to enable the touch reappearance and touch control module to generate a static electric field, so that the touch reappearance function is realized.
An embodiment of the present invention further provides a driving method of a terminal, as shown in fig. 10, the driving method is applied to the terminal 300 as described above, and includes the following steps:
s1, the driving chip 301 receives the working mode command from the user, and determines whether the terminal 300 enters the touch reproduction mode or the touch display mode.
In the haptic rendering mode:
s11, the driving chip 301 sends a touch reproduction control signal to the touch screen 302;
s12, the touch screen 302 receives the touch reproduction control signal, displays a touch reproduction screen, senses a first touch position of the user on the touch screen 302, and sends a trigger signal including information of the first touch position to the driver chip 301.
S13, the driving chip 301 receives the trigger signal and sends an excitation signal containing the first touch position information to the haptic reproduction driver 303.
S14, the tactile sense reproduction driver 303 receives the excitation signal, and controls the touch screen 302 to generate a static electric field at the first touch position, so as to generate a tactile sense for the finger of the user. The static electric field is generated here by the haptic rendering and touch module in the touch screen 302.
In a touch display mode:
s21, the driving chip 301 sends a touch display control signal to the touch screen 302 and the touch controller 304.
S22, the touch screen 302 receives the touch display control signal and displays a touch display screen.
S23, the touch controller 304 receives the touch display control signal, and controls the touch screen 302 to detect a second touch position of the user on the touch screen 302.
The above steps are a driving method of the terminal 300, and implement a haptic rendering function and a touch display function, the effects of which are consistent with those of the terminal 300.
In some embodiments, in the haptic reproduction mode, a duration of the electrostatic force field alternates with a display period of the haptic reproduction screen in the haptic reproduction at the first touch position. Therefore, the crosstalk between the generation of the electrostatic force field and the pixel display can be avoided, and the normal operation of the electrostatic force field generation and the touch display screen display in the touch reproduction mode can be ensured.
In some embodiments, the terminal 300 further comprises a 3D touch sensor. As shown in fig. 11, before the step S1 in which the driver chip 301 receives the operating mode command issued by the user, the terminal driving method further includes the steps of: the 3D touch sensor 308 senses a pressing parameter of the user pressing the touch screen 302, and uploads the sensed pressing parameter as a working mode command issued by the user to the driving chip 301; wherein the compression parameter comprises a pressure value and/or a compression time length.
Based on the above scheme, the step of determining whether the terminal 300 enters the haptic reproduction mode or the touch display mode in step S1 includes: the driving chip 301 receives the pressing parameter, and determines whether the pressing parameter is within a preset range: if so, it is determined that the terminal 300 enters the haptic reproduction mode; if not, the terminal 300 is judged to enter the touch display mode.
Through the above steps S01 and S02, the user can select whether to enter the terminal into the touch reproduction mode or the touch display mode as required by pressing the 3D touch sensor, which ensures that both functions of the terminal 300 can be realized, and the operation is simple and easy.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (10)

1. A pixel driving circuit is applied to a terminal, the terminal comprises a touch screen and a driving chip, and the pixel driving circuit is characterized by comprising:
the sensing component is used for sensing a first touch position of a user on the touch screen when the terminal is in a touch reproduction mode;
the control component is connected with the sensing component and the driving chip and is used for acquiring sensing information of the sensing component and outputting a trigger signal containing first touch position information to the driving chip;
the display driving component is connected with the sub-pixels of the touch screen and is used for driving the sub-pixels to display a touch reproduction picture when the terminal is in a touch reproduction mode; the terminal is also used for driving the sub-pixels to display a touch display picture when the terminal is in a touch display mode;
wherein the sensing component comprises a photoelectric sensor or a piezoelectric sensor;
when the sensing component is a photoelectric sensor;
the control component comprises an induction switch tube, the control end of the induction switch tube is connected with the second end of the photoelectric sensor, the first end of the induction switch tube is configured to receive a first clock signal, and the second end of the induction switch tube is connected with the driving chip; the inductive switch tube is opened when the photoelectric sensor outputs a low level signal;
the display driving part comprises a display switch tube, the control end of the display switch tube is connected with the first end of the induction switch tube, the first end of the display switch tube is connected with the driving chip, and the second end of the display switch tube is connected with the sub-pixel; the display switch tube is closed when the first clock signal is a low level signal;
when the sensing component is a piezoelectric sensor;
the control component comprises an induction switch tube, the control end of the induction switch tube is configured to receive a second clock signal, the first end of the induction switch tube is connected with the second end of the piezoelectric sensor, and the second end of the induction switch tube is connected with the driving chip; the inductive switch tube is opened when the second clock signal is a low level signal;
the display driving part comprises a display switch tube, the control end of the display switch tube is connected with the control end of the induction switch tube, the first end of the display switch tube is connected with the driving chip, and the second end of the display switch tube is connected with the sub-pixel; and the display switch tube is closed when the second clock signal is a low level signal.
2. The pixel driving circuit according to claim 1, wherein when the sensing part is a photosensor; the pixel driving circuit further comprises a resistor, wherein one end of the resistor is connected with the second end of the induction switching tube, and the other end of the resistor is configured to receive a low-level signal.
3. A display substrate, comprising a substrate, characterized in that the display substrate further comprises:
a plurality of pixel drive circuits according to any one of claims 1 to 2 provided on the substrate;
the touch reproduction and touch control module is arranged on one side, opposite to the substrate, of the pixel driving circuits and is used for generating a static electric field and generating touch sense for fingers of a user when a terminal where the display substrate is located is in a touch reproduction mode; and the terminal is also used for detecting a second touch position of the user on the display substrate when the terminal is in the touch display mode.
4. The display substrate of claim 3, wherein each of the pixel driving circuits comprises a sensing component, a sensing switch tube and a display switch tube; the induction component comprises a first electrode, a second electrode and an induction electrode arranged between the first electrode and the second electrode;
the sensing electrode is made of a photoelectric material, the first electrode is electrically connected with the grid electrode of the sensing switch tube, and the source electrode of the sensing switch tube is electrically connected with the grid electrode of the display switch tube; or,
the sensing electrode is made of piezoelectric materials, the first electrode is electrically connected with the source electrode of the sensing switch tube, and the grid electrode of the sensing switch tube is electrically connected with the grid electrode of the display switch tube.
5. A terminal is characterized by comprising a driving chip, a touch screen, a touch sense reproduction driver and a touch controller, wherein the touch screen, the touch sense reproduction driver and the touch controller are respectively connected with the driving chip;
the driving chip is used for receiving a working mode instruction given by a user and determining whether the terminal enters a touch sense reproduction mode or a touch control display mode: if the terminal is determined to enter the touch reproduction mode, sending a touch reproduction control signal to the touch screen; if the terminal is determined to enter the touch display mode, sending a touch display control signal to the touch screen and the touch controller;
the touch screen is used for receiving the touch reproduction control signal, displaying a touch reproduction picture, sensing a first touch position of a user on the touch screen, and sending a trigger signal containing first touch position information to the drive chip; the touch display control device is also used for receiving the touch display control signal and displaying a touch display picture;
the driving chip is also used for receiving the trigger signal and sending an excitation signal containing the first touch position information to the tactile representation driver;
the touch sense reproduction driver is used for receiving the excitation signal, controlling the touch screen to generate a static electric force field at the first touch position and enabling a finger of a user to generate a touch sense;
the touch controller is used for receiving the touch display control signal and controlling the touch screen to detect a second touch position of the user on the touch screen;
the touch screen comprises a plurality of pixel driving circuits according to any one of claims 1-2.
6. The terminal of claim 5, further comprising:
a first switch connected between the haptic rendering driver and the touch screen;
the second switch is connected between the touch controller and the touch screen;
the switching controller is respectively connected with the first switch and the second switch, is also connected with the driving chip and is used for receiving the touch reappearance control signal and controlling the first switch to be closed and the second switch to be opened; and the touch display control circuit is also used for receiving the touch display control signal, controlling the first switch to be switched off and the second switch to be switched on.
7. The terminal according to claim 5, wherein the touch screen further comprises a 3D touch sensor connected to the driver chip, and configured to sense a pressing parameter of the touch screen pressed by a user, and upload the sensed pressing parameter to the driver chip as a working mode command issued by the user; wherein the compression parameter comprises a pressure value and/or a compression duration;
the driving chip is further used for receiving the pressing parameters and judging whether the pressing parameters are within a preset range: if yes, the terminal is judged to enter a touch reproduction mode, and a touch reproduction control signal is sent out; and if not, judging that the terminal enters a touch display mode, and sending a touch display control signal.
8. A driving method of a terminal, applied to the terminal according to any one of claims 5 to 7, comprising:
the driving chip receives a working mode instruction issued by a user and determines whether the terminal enters a touch reproduction mode or a touch display mode;
in the haptic rendering mode:
the driving chip sends a touch reappearing control signal to the touch screen;
the touch screen receives the touch reappearing control signal, displays a touch reappearing picture, induces a first touch position of a user on the touch screen through an induction part of a pixel driving circuit in the touch screen, and sends a trigger signal containing first touch position information to a driving chip;
the driving chip receives the trigger signal and sends out an excitation signal containing the first touch position information to a tactile reproduction driver;
the touch sense reproduction driver receives the excitation signal, controls the touch screen to generate a static electric force field at the first touch position, and enables the finger of the user to generate a touch sense;
in a touch display mode:
the driving chip sends a touch display control signal to the touch screen and the touch controller;
the touch screen receives the touch display control signal and displays a touch display picture;
and the touch controller receives the touch display control signal and controls the touch screen to detect a second touch position of the user on the touch screen.
9. The method of driving a terminal according to claim 8, wherein in the haptic reproduction mode, a duration period of an electrostatic force field alternates with a display period of a haptic reproduction screen in the haptic reproduction at the first touch position.
10. The method of driving a terminal according to claim 8, wherein the terminal further comprises a 3D touch sensor;
before the step of receiving a working mode instruction issued by a user by the driving chip, the driving method of the terminal further comprises the following steps: the 3D touch sensor senses a pressing parameter of a user pressing the touch screen, and the sensed pressing parameter is used as a working mode instruction issued by the user and is uploaded to the driving chip; wherein the pressing parameters comprise a pressure value and/or a pressing time length;
the step of determining whether the terminal enters the haptic reproduction mode or the touch display mode includes: the driving chip receives the pressing parameters and judges whether the pressing parameters are within a preset range: if yes, judging that the terminal enters a touch reproduction mode; and if not, judging that the terminal enters a touch display mode.
CN201811369279.5A 2018-11-16 2018-11-16 Pixel driving circuit, display substrate, terminal and driving method thereof Active CN109272919B (en)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110307777B (en) * 2019-06-28 2021-03-05 上海天马微电子有限公司 Pressure-sensitive panel and display device
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140046204A (en) * 2012-10-10 2014-04-18 엘지디스플레이 주식회사 Tactile sense feedback touch screen
CN103869960A (en) * 2012-12-18 2014-06-18 富泰华工业（深圳）有限公司 Touch feedback system and touch feedback providing method thereof
CN104199554A (en) * 2014-09-21 2014-12-10 吉林大学 Electrostatic force haptic display method and device applied to mobile terminals
CN104679241A (en) * 2015-01-30 2015-06-03 南京航空航天大学 Wide friction-control haptic display device and display method based on same
CN108700949A (en) * 2016-06-12 2018-10-23 苹果公司 For the tactile time feedbacking based on wrist of loss of sight user
WO2018208093A1 (en) * 2017-05-11 2018-11-15 삼성전자 주식회사 Method for providing haptic feedback, and electronic device for performing same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9760241B1 (en) * 2010-11-05 2017-09-12 Amazon Technologies, Inc. Tactile interaction with content

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140046204A (en) * 2012-10-10 2014-04-18 엘지디스플레이 주식회사 Tactile sense feedback touch screen
CN103869960A (en) * 2012-12-18 2014-06-18 富泰华工业（深圳）有限公司 Touch feedback system and touch feedback providing method thereof
CN104199554A (en) * 2014-09-21 2014-12-10 吉林大学 Electrostatic force haptic display method and device applied to mobile terminals
CN104679241A (en) * 2015-01-30 2015-06-03 南京航空航天大学 Wide friction-control haptic display device and display method based on same
CN108700949A (en) * 2016-06-12 2018-10-23 苹果公司 For the tactile time feedbacking based on wrist of loss of sight user
WO2018208093A1 (en) * 2017-05-11 2018-11-15 삼성전자 주식회사 Method for providing haptic feedback, and electronic device for performing same

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