CN114442850A - Display panel and touch method thereof - Google Patents
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- CN114442850A CN114442850A CN202210103991.0A CN202210103991A CN114442850A CN 114442850 A CN114442850 A CN 114442850A CN 202210103991 A CN202210103991 A CN 202210103991A CN 114442850 A CN114442850 A CN 114442850A
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- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
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- G—PHYSICS
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- 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
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Abstract
The application discloses display panel and touch method thereof, wherein the display panel comprises: a touch display substrate, a haptic feedback substrate and an actuator; the tactile feedback substrate and the actuator are positioned on the same side and/or two opposite sides of the touch display substrate, and the tactile feedback substrate is positioned on the display side of the touch display substrate; the haptic feedback substrate is used to generate electrostatic haptic feedback and the actuator is used to generate vibrotactile feedback. The display panel can realize electrostatic tactile feedback and vibration tactile feedback by itself without an external electrostatic tactile feedback part and a vibration tactile feedback part, so that the electronic equipment adopting the display panel does not need to be provided with the electrostatic tactile feedback part and the vibration tactile feedback part independently, and the display panel can meet the requirement of developing towards the light and thin direction.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a touch method thereof.
Background
The touch display screen can provide more direct operation experience for a user, and the user can realize operation, data input, control and the like on equipment with the touch display screen by touching the touch display screen.
However, since a user directly operates on the touch display screen, the user lacks a tactile feedback, and in order to solve this problem, an eccentric motor is often provided in a device having the touch display screen, and the eccentric motor operates to provide a tactile feedback in the form of a certain vibration when performing touch control. However, with the progress of the real technologies and the demand of the development of electronic devices, especially mobile electronic devices (such as mobile phones and tablet computers) toward light weight and thinness, the haptic feedback using an eccentric motor for touch control has not been able to meet the demand of the technical development.
Disclosure of Invention
The application expects to provide a display panel and touch method thereof for solving the problem that the demand of development of electronic equipment towards the direction of lightness and thinness is not facilitated by performing touch feedback through an eccentric motor in the prior art.
In a first aspect, the present invention provides a display panel comprising: a touch display substrate, a haptic feedback substrate and an actuator;
the tactile feedback substrate and the actuator are positioned on the same side and/or two opposite sides of the touch display substrate, and the tactile feedback substrate is positioned on the display side of the touch display substrate;
the haptic feedback substrate is used to generate electrostatic haptic feedback and the actuator is used to generate vibrotactile feedback.
As an implementation manner, the touch display substrate comprises a touch circuit layer, and the touch circuit layer comprises a receiving electrode layer, a first insulating layer and a driving electrode layer which are sequentially stacked;
the receiving electrode layer comprises a plurality of receiving electrodes which are arranged in parallel at intervals;
the driving electrode layer comprises a plurality of driving electrodes which are arranged in parallel at intervals;
the receiving electrodes and the driving electrodes are arranged in a crossed mode.
As an implementation manner, the tactile feedback substrate comprises a tactile electrode layer and an insulating protection layer which are sequentially stacked;
the touch electrode layer comprises a plurality of touch electrodes arranged in parallel at intervals, the touch electrodes are arranged in parallel with the driving electrode, and the touch electrode layer and the receiving electrode layer are respectively arranged on two sides of the driving electrode layer; or,
the tactile electrode layer comprises grid electrodes serving as tactile electrodes, and the tactile electrode layer and the receiving electrode layer are respectively arranged on two sides of the driving electrode layer; the hollow area of the grid electrode is 80% -90% of the hollow area formed by the receiving electrodes and the driving electrodes which are arranged in a crossed mode.
As an implementation manner, in a projection direction perpendicular to the display surface of the touch display substrate, the tactile electrode and the driving electrode at least partially overlap.
As an implementation manner, the touch display substrate comprises a touch circuit layer, and the touch circuit layer comprises a receiving electrode layer, a first insulating layer and a driving electrode layer which are sequentially stacked;
the driving electrode layer comprises a grid electrode as a driving electrode;
the tactile feedback substrate comprises a tactile electrode layer and an insulating protective layer which are sequentially stacked;
the tactile electrode layer comprises a transparent surface electrode as a tactile electrode;
the electrode overlapping area of the grid electrode and the transparent surface electrode is more than or equal to 60 percent;
or the touch display substrate comprises a touch circuit layer, wherein the touch circuit layer comprises a receiving electrode layer, a first insulating layer and a driving electrode layer which are sequentially stacked;
the driving electrode layer comprises a driving electrode;
the tactile feedback substrate comprises a tactile electrode layer and an insulating protective layer which are sequentially stacked;
the tactile electrode layer comprises tactile electrodes;
the driving electrode and the tactile electrode are both grid electrodes, and the electrode overlapping area of the driving electrode and the tactile electrode is greater than or equal to 80%.
As an implementation manner, the total area of the actuators accounts for 5% -30% of the total area of the display panel; or; the actuators are arranged at a density of 5-50 per square millimeter.
As an implementation manner, the touch display substrate comprises a display area and a non-display area located around the display area;
the haptic feedback substrate and the actuator are located on the same side of the touch display substrate, and the actuator is located in the non-display area.
As an implementation, the display panel is a foldable or rollable display panel, and the actuator is located at a distance of 15um to 500um from a bending central axis of the display panel.
As an implementation manner, the touch display substrate includes a display area and a non-display area located around the display area, and a display middle frame located around the non-display area, and the display middle frame is provided with a sounding device or a vibrating device, and the inner side of the display middle frame is provided with the actuator, the actuator is away from the sounding device or the vibrating device, and the distance is 15um-50 cm.
In a second aspect, the present invention provides a touch method of the above display panel, including the following steps:
acquiring a touch gesture for touching the display panel;
and controlling the actuator to vibrate and/or improve the touch driving voltage of the touch display substrate according to the corresponding relation between the touch gesture and the type of the touch feedback, so that the touch feedback substrate generates electrostatic touch feedback.
In the above aspect, the haptic feedback substrate and the actuator are disposed in the display panel, wherein the haptic feedback substrate may generate the electrostatic haptic feedback and the actuator may generate the vibrotactile feedback. That is, the display panel can realize the electrostatic tactile feedback and the vibrotactile feedback by itself without an external electrostatic tactile feedback part and a vibrotactile feedback part, and therefore, the electronic device using the display panel of the present application does not need to separately provide the electrostatic tactile feedback part and the vibrotactile feedback part, and thus, the display panel can meet the demand for development towards the direction of lightness and thinness. In addition, due to the scheme, not only can electrostatic tactile feedback be realized, but also vibration tactile feedback can be realized, and therefore richer tactile feedback effects can be brought.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a top view of display receive electrodes, drive electrodes, and tactile electrodes according to an embodiment of the invention;
FIG. 3 is a top view of a display panel according to an embodiment of the present invention;
fig. 4 is a bottom view of a display panel according to an embodiment of the present invention;
fig. 5 is a bottom view of a display panel according to another embodiment of the present invention;
FIG. 6 is a bottom view of a display panel according to another embodiment of the present invention;
fig. 7 is a flowchart of a touch method according to an embodiment of the invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, a display panel according to an embodiment of the present invention includes: a touch display substrate 3, a tactile feedback substrate 7 and an actuator 1;
the touch display substrate 3 is a display substrate with a touch function, wherein the touch function can adopt a capacitive touch scheme, and a capacitive touch scheme can be preferred; examples of the Display substrate include, but are not limited to, an LCD (Liquid Crystal Display) Display panel, an OLED (Organic Light Emitting Diode) Display panel, and a QLED (Quantum Dot Light Emitting Diode) Display panel.
The touch display substrate 3 may be a rigid display substrate or a flexible display substrate.
In this example, the touch display substrate 3 is an OLED display panel having a touch function, and includes a TFT (Thin Film Transistor) back plate 31, an anode layer 32, a light emitting layer 33, a cathode layer 34, an encapsulation layer 35, a touch circuit layer 36, and the like, which are sequentially stacked. The light emitting layer 33 includes a plurality of pixels, each of which includes a plurality of sub-pixels having different colors, such as a red sub-pixel, a blue sub-pixel, a green sub-pixel, and the like, and each of the sub-pixels may include a hole injection layer, a hole transport layer, an electroluminescent layer, an electron injection layer, an electron transport layer, and the like.
The tactile feedback substrate 7 and the actuator 1 are located on the same side and/or opposite sides of the touch display substrate 3, and the tactile feedback substrate 7 is located on the display side of the touch display substrate 3; namely, the tactile feedback substrate 7 and the actuator 1 can be both positioned on the display side of the touch display substrate 3; or, the tactile feedback substrate 7 is located on the display side of the touch display substrate 3, and the actuator 1 is located on the back side of the touch display substrate 3, where the back side refers to the side opposite to the display side of the touch display substrate 3; the actuator 1 may be provided on the display side of the touch display substrate 3 in addition to the haptic feedback substrate 7, and the actuator 1 may be provided on the back surface of the touch display substrate 3 in the same manner.
For example, but not limited to, the actuator 1 may be directly attached or directly film-formed and patterned to be formed on the back of a display substrate, such as a glass backplane or a plastic substrate. The actuator 1 may also be attached to or formed on a metal support plate 2 of an OLED display. When applied to a foldable display screen, the actuator 1 is positioned to avoid the folding center position.
The tactile feedback substrate 7 is used for generating electrostatic tactile feedback to achieve the purpose of texture feedback, that is, the tactile feedback substrate 7 can generate static electricity with different sizes, so that the fingers 8 of the user can feel electrostatic attractive force with different intensities, and thus the fingers 8 of the user can feel different surface friction forces in the process of touching the display panel, so as to achieve the resolution of pattern contours and textures; the actuator 1 is used to generate vibrotactile feedback.
The actuator 1 is for example, but not limited to, a piezoceramic wafer. By applying different alternating signals to the piezoelectric ceramic piece, the piezoelectric ceramic piece can be bent and deformed, so that the vibration effect is generated.
In the above-described configuration, the haptic feedback substrate 7 and the actuator 1 are provided in the display panel, in which the haptic feedback substrate 7 can generate electrostatic haptic feedback and the actuator 1 can generate vibrotactile feedback. That is, the display panel can realize the electrostatic tactile feedback and the vibrotactile feedback by itself without an external electrostatic tactile feedback part and a vibrotactile feedback part, and therefore, the electronic device using the display panel of the present application does not need to separately provide the electrostatic tactile feedback part and the vibrotactile feedback part, and thus, the display panel can meet the demand for development towards the direction of lightness and thinness. In addition, due to the scheme, not only can electrostatic tactile feedback be realized, but also vibration tactile feedback can be realized, and therefore richer tactile feedback effects can be brought.
As an implementation manner, the touch display substrate 3 includes a touch circuit layer 36, and the touch circuit layer 36 includes a receiving electrode layer, a first insulating layer 362 and a driving electrode layer, which are sequentially stacked;
the receiving electrode layer comprises a plurality of receiving electrodes 361 which are arranged in parallel at intervals;
the driving electrode layer comprises a plurality of driving electrodes 363 arranged in parallel at intervals;
the receiving electrode 361 and the driving electrode 363 are arranged in a crossing manner.
In operation, the operating frequency range of the actuator 1 may be swept from tens to hundreds of hertz, such as, but not limited to, frequencies of 50Hz, 100Hz, 200Hz, 300 Hz. Optionally, the display panel further includes an actuator frequency conversion control circuit for controlling the actuator frequency switching. For example: the actuator frequency conversion control circuit can be switched between 300Hz and 50 Hz. The drive electrodes 363 operate at frequencies of tens of thousands to hundreds of thousands of hertz, for example, but not limited to, frequencies of 20KHz, 50KHz, 100KHz, 200KHz, for scanning, when performing touch location detection. The voltage range is several to tens of volts. The driving electrodes 363 operate at frequencies of several thousand to several tens of kilohertz, such as, but not limited to, frequencies of 5KHz, 10KHz, 20KHz, 30KHz, 40KHz, while implementing haptic functions, scanning each driving electrode 363 with driving waveform voltages ranging from tens to two hundred volts, such as, but not limited to, 50V, 100V, 120V, 150V, 200V. To detect whether the capacitance value at the intersection of the receiving electrode 361 and the driving electrode 363 changes, so as to determine whether the touch is made and the touched position. High voltage driving is performed to generate haptic feedback when the touch position is determined.
As an implementation manner, referring to fig. 2, the tactile feedback substrate 7 includes a tactile electrode layer and an insulating protection layer 72 sequentially stacked;
the tactile sensation electrode layer comprises a plurality of tactile sensation electrodes 71 which are arranged in parallel at intervals, the tactile sensation electrodes 71 are arranged in parallel with the driving electrode 363, and the tactile sensation electrode layer and the receiving electrode layer are respectively arranged on two sides of the driving electrode layer. With this configuration, when the electrostatic tactile feedback is performed, the variation of the voltage on the driving electrode 363 will cause the tactile electrode 71 to sense the static electricity with different magnitude, so that the user can feel different surface friction. For example, but not limited to, the pattern of the driving electrodes 363, receiving electrodes 361, and tactile electrodes 71 may be stripes, diamonds, snowflakes, rice shapes, and the like. The shape of the electrodes is not limited, and it is only necessary that the tactile electrode 71 and the drive electrode 363 are arranged in parallel, and the overlapping area is 50% or more and 100% or less.
For example: when the driving electrode 363 is a grid electrode (for example, a metal grid electrode) integrated on the display panel and the on-cell touch electrode 71 uses a transparent electrode, the overlapping area of the electrodes should be greater than or equal to 60%, that is, the hollow area of the grid electrode is less than or equal to 40% of the transparent electrode; specifically, the driving electrode 363 is a metal mesh electrode integrated with the display panel.
Alternatively, when the tactile electrode 71 also uses a metal mesh electrode, the electrode overlapping area thereof should be equal to or greater than 80%.
It is understood that the area of the metal/transparent grid electrode is calculated equivalently for the planar electrode according to its pattern.
Optionally, when the tactile electrode 71 may be a grid electrode, the area of the hollow portion formed by the grid electrode is smaller than the area of the hollow portion formed by the receiving electrode 361 and the driving electrode 363; so as to ensure the overlapping of the tactile electrode 71 and the driving electrode 363, and thus when performing the electrostatic tactile feedback, the voltage variation on the driving electrode 363 will cause the tactile electrode 71 to sense the static electricity with different magnitudes, so that the user can feel different surface friction forces. Preferably, when the tactile electrode 71 is a grid electrode, the area of the hollow part is 80% -90% of the area of the hollow part of the grid electrode formed by the receiving electrode 361 and the driving electrode 363.
The driving electrode 363, the receiving electrode 361 and the tactile electrode 71 may be transparent electrodes such as Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), nano silver wires (SNW), conductive Polymer (PEDOT), etc., or may be metal mesh electrodes such as copper (Cu) and its alloy, silver (Ag) and its alloy, titanium/aluminum/titanium (Ti/Al/Ti), molybdenum/aluminum/molybdenum (Mo/Al/Mo), etc. The metal mesh may be directly fabricated on the display luminescent material encapsulation layer 35, or may be separately fabricated and attached to the display panel.
As an implementation manner, in a projection direction perpendicular to the display surface of the touch display substrate 3, the tactile electrode 71 and the driving electrode 363 at least partially overlap. Generally, when the voltage applied to the driving electrode 363 is constant, the amount of static electricity generated in the tactile sensation electrode 71 is positively correlated with the overlapping amount of the tactile sensation electrode 71 and the driving electrode 363, that is, when the voltage applied to the driving electrode 363 is constant, the higher the overlapping amount of the tactile sensation electrode 71 and the driving electrode 363 is, the larger the amount of static electricity generated in the tactile sensation electrode 71 is, and the stronger the electrostatic attraction force generated thereby is.
Preferably, the amount of overlap between the tactile electrode 71 and the drive electrode 363 is as high as possible.
As an implementation manner, as shown in fig. 3, the touch display substrate 3 includes a display area AA, a non-display area BB located around the display area AA, and a display middle frame CC located around the non-display area BB;
the tactile feedback substrate 7 and the actuator 1 are located on the same side of the touch display substrate 3, and the actuator 1 is located in the non-display area BB. The actuator 1 is located in the non-display area BB, so that the actuator 1 can be prevented from blocking the light emitted from the sub-pixels, and furthermore, by being located in the non-display area BB, there can be enough space for arranging the actuator 1 as large as possible to provide vibration of sufficient intensity.
As an implementation manner, the touch display substrate 3 includes a display area AA and a non-display area BB located around the display area AA;
the tactile feedback substrate 7 and the actuator 1 are disposed on opposite sides of the touch display substrate 3, for example, the actuator 1 is disposed on the back of the substrate, and the actuator 1 is at least disposed in the display area AA. On one hand, the actuator 1 can be prevented from blocking the light emitted by the sub-pixels, and on the other hand, the touch operation is generally performed in the display area AA, and the actuator 1 is disposed in the display area AA, so that the user can feel the vibration tactile feedback more directly.
As an implementation manner, in order to improve the vibration effect of the vibration feedback, a metal supporting plate 2 is disposed on the back surface of the touch display substrate 3, and the actuator 1 is fixedly disposed on a side of the metal supporting plate 2 away from the touch display substrate 3. The metal support plate 2 may have a certain synergistic effect on the vibrations emitted by the actuator 1.
The material of the metal supporting plate 2 is, for example, but not limited to, SUS stainless steel.
The array of actuators 1 may also be attached to the inside of the display center frame CC as a tactile feedback implementation for side keys, such as vibration feedback for a mobile phone switch key, volume key, etc.
For example: the actuator 1 may be placed 15um-50cm from the sound-emitting or vibratable means of the display device for better tactile feedback realization. For example: the sound emitting device of the display device may be a switch key, a volume key, etc. of a mobile terminal (mobile phone, PAD, watch, etc.). The enunciatable means may be arranged, for example, on the display middle frame CC.
As a practical implementation manner, a plurality of actuators 1 are arranged on the metal supporting plate 2, and the plurality of actuators 1 are regularly arranged, where the regular arrangement is that the actuators are arranged according to a predetermined rule; for example, but not limiting of, as shown in fig. 4, two columns of actuators 1 may be provided, and the two columns of actuators 1 are symmetrically provided; as shown in fig. 5, four rows of actuators 1 may be provided, and the number of the two sides in the middle is less than that of the two sides, as shown in fig. 6, the actuators 1 may also be uniformly arranged in a matrix manner, and the arrangement here is merely an example and is not a limitation to the arrangement, and of course, other arrangements may also be adopted. In addition, the shape of the actuators 1 on the same display panel may be the same or different; the shape of the actuator 1 may be circular, square, oval, etc. The size of the actuator is not limited and may be, for example, 3 mm to 7 mm in diameter or 2.5 mm to 6 mm on a side. Of course, the setting can be made according to the requirement.
The attaching number and attaching position can be adjusted according to the size of the display panel and the size of the actuator 1. In order to ensure the overall vibration effect, the arrangement density of the actuators is required, for example, the total area of the attached actuators 1 is not less than 5% of the total area of the display panel.
Optionally, the total area of the actuator 1 accounts for 5% -30% of the total area of the display panel.
Optionally, the total area of the actuator 1 accounts for 5% -25% of the total area of the display panel; alternatively, the total area of the actuators 1 accounts for 10-20% of the total area of the display panel.
Alternatively, the density of the actuators may be 5-50 per square millimeter (e.g., the total area of the display panel is about 12000 square millimeters, the number of the actuators is 10-40, and the diameter of the actuators is about 5 millimeters).
Optionally, the number of the actuators distributed in the display area AA is smaller than the number of the actuators distributed in the peripheral area (e.g., the non-display area BB); alternatively, the distribution density of the actuators in the display area AA is less than that in the peripheral area, so as to reduce the signal interference effect of the signal lines (e.g. gate lines, data lines) in the display area on the actuators.
Optionally, when the tactile electrodes 71 are strip electrodes, the pitch (not shown) between two adjacent rows of tactile electrodes 71 is smaller than the pitch between two adjacent rows of the actuator 1 (e.g., fig. 6); alternatively, when the tactile electrodes 71 are strip electrodes, the distance (not shown) between two adjacent columns of tactile electrodes 71 is smaller than the distance between two adjacent columns of actuators (e.g., fig. 6), so that the actuator 1 and the tactile electrodes 71 cooperate to make the user feel the vibrotactile feedback more directly.
When the actuator 1 is attached to a foldable or rollable display panel, the bending central axis region should be avoided so as not to affect the service life of the actuator 1 by bending.
Preferably, the actuator is located between 15um and 500um from the bend central axis. To avoid the effect on the actuator when the folding screen is folded.
As an implementable manner, the material forming the actuator 1 includes at least any one of piezoelectric ceramics, piezoelectric quartz, polyvinylidene fluoride, and fluorinated polyethylene.
For example, but not limited to, a thin film including at least any one material of piezoelectric ceramics, piezoelectric quartz, polyvinylidene fluoride, and fluorinated polyethylene may be formed on the back surface of the substrate base material of the touch display substrate 3 or the above-described metal support plate 2 (e.g., a support plate of SUS material), and then, the thin film is patterned to form the actuator 1. Of course, it is also possible to prepare the actuator 1 in advance and then fix it to the metal support plate 2 by means of adhesion.
In a second aspect, as shown in fig. 7, the present invention provides a touch method of the above display panel, including the following steps:
s1: acquiring a touch gesture for touching the display panel;
the touch gesture is, for example, but not limited to, a tap, a slide, and the like.
For example, whether or not a tap is performed is detected by an acceleration sensor or the like. When the display panel is detected to be touched, judging whether the acceleration in the direction perpendicular to the display panel is larger than a preset threshold value, if so, judging that the display panel is knocked, otherwise, judging that the display panel is not knocked. And under the condition that the touch position is not knocked, judging whether the touch position is continuously changed, if so, sliding, otherwise, point-touching.
S2: and controlling the actuator 1 to vibrate and/or increase the touch driving voltage V of the touch display substrate 3 according to the corresponding relation between the touch gesture and the type of the touch feedback, so that the touch feedback substrate 7 generates electrostatic touch feedback.
For example, but not limiting of, the type of haptic feedback that corresponds to a tap may be vibrotactile feedback; the tactile feedback type corresponding to the point contact may be vibrotactile feedback and/or electrostatic tactile feedback, and the tactile feedback type corresponding to the sliding contact may be electrostatic tactile feedback.
Referring to fig. 1, the results of the display panel and the touch method thereof according to the present invention are illustrated in one of the realizable manners.
The display panel includes a metal support plate 2, and the material of the metal support plate 2 is, for example, but not limited to, SUS stainless steel.
A plurality of actuators 1 are arranged on a first surface (also called a back surface) of the metal support plate 2, and piezoelectric ceramic plates can be adopted as the actuators 1; the TFT back plate 31, the anode layer 32, the light emitting layer 33, the cathode layer 34, the encapsulation layer 35, the touch circuit layer 36, the polarizing layer 4, the optical adhesive layer 5, the cover plate layer 6, and the tactile feedback substrate 7 are sequentially disposed on a second surface (also referred to as a front surface) of the metal support plate 2.
The light emitting layer 33 includes a plurality of pixels, each of which includes a plurality of sub-pixels with different colors, such as a red sub-pixel, a blue sub-pixel, a green sub-pixel, and the like, and each of the sub-pixels may include a hole injection layer, a hole transport layer, an electroluminescent layer, an electron injection layer, an electron transport layer, and the like.
The touch circuit layer 36 includes a receiving electrode layer, a first insulating layer 362 and a driving electrode layer, which are sequentially stacked; the receiving electrode layer comprises a plurality of receiving electrodes 361 which are arranged in parallel at intervals; the driving electrode layer comprises a plurality of driving electrodes 363 arranged in parallel at intervals; the receiving electrode 361 and the driving electrode 363 are arranged in a crossed manner.
The tactile feedback substrate 7 includes a tactile electrode layer and an insulating protective layer 72, which are sequentially stacked, the insulating protective layer 72 being, for example, but not limited to, a cover glass or the like; the tactile sensation electrode layer comprises a plurality of tactile sensation electrodes 71 which are arranged in parallel at intervals, the tactile sensation electrodes 71 are arranged in parallel with the driving electrode 363, and the tactile sensation electrode layer and the receiving electrode layer are respectively arranged on two sides of the driving electrode layer.
In operation, the operating frequency range of the actuator 1 may be swept from tens to hundreds of hertz, such as, but not limited to, frequencies of 50Hz, 100Hz, 200Hz, 300 Hz. That is, the touch driving voltage V is applied to each driving electrode 363 at the above frequency to detect whether the capacitance value at the intersection of the receiving electrode 361 and the driving electrode 363 changes, so as to determine whether the touch is touched and the touched position. Whether or not a tap has been made is detected by an acceleration sensor or the like.
When the display panel is detected to be touched, judging whether the acceleration in the direction perpendicular to the display panel is larger than a preset threshold value, if so, judging that the display panel is knocked, otherwise, judging that the display panel is not knocked. And under the condition that the touch position is not knocked, judging whether the touch position is continuously changed, if so, sliding, otherwise, point-touching.
When the touch gesture is detected to be knocking, controlling the actuator 1 to vibrate to generate vibration tactile feedback; when the touch gesture is detected to be point touch, controlling the actuator 1 to vibrate to generate vibration touch feedback and/or increasing the touch driving voltage V of the touch display substrate 3, namely increasing the voltage value of the touch driving voltage V introduced into the driving electrode 363, so that the touch feedback substrate 7 generates electrostatic touch feedback; when the touch gesture is detected to be sliding, the touch driving voltage V of the touch display substrate 3 is increased, that is, the voltage value of the touch driving voltage V introduced to the driving electrode 363 is increased, so that the touch feedback substrate 7 generates electrostatic touch feedback.
It will be understood that any orientation or positional relationship indicated above with respect to the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., is based on the orientation or positional relationship shown in the drawings and is for convenience in describing and simplifying the invention, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be considered limiting of the invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The foregoing description is only exemplary of the preferred embodiments of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (10)
1. A display panel, comprising: a touch display substrate, a haptic feedback substrate and an actuator;
the tactile feedback substrate and the actuator are positioned on the same side and/or two opposite sides of the touch display substrate, and the tactile feedback substrate is positioned on the display side of the touch display substrate;
the haptic feedback substrate is used to generate electrostatic haptic feedback and the actuator is used to generate vibrotactile feedback.
2. The display panel according to claim 1, wherein the touch display substrate comprises a touch circuit layer, and the touch circuit layer comprises a receiving electrode layer, a first insulating layer and a driving electrode layer which are sequentially stacked;
the receiving electrode layer comprises a plurality of receiving electrodes which are arranged in parallel at intervals;
the driving electrode layer comprises a plurality of driving electrodes which are arranged in parallel at intervals;
the receiving electrodes and the driving electrodes are arranged in a crossed mode.
3. The display panel according to claim 2, wherein the tactile feedback substrate comprises a tactile electrode layer and an insulating protective layer which are sequentially stacked;
the touch electrode layer comprises a plurality of touch electrodes arranged in parallel at intervals, the touch electrodes are arranged in parallel with the driving electrode, and the touch electrode layer and the receiving electrode layer are respectively arranged on two sides of the driving electrode layer; or,
the tactile electrode layer comprises grid electrodes serving as tactile electrodes, and the tactile electrode layer and the receiving electrode layer are respectively arranged on two sides of the driving electrode layer; the hollow area of the grid electrode is 80% -90% of the hollow area formed by the receiving electrodes and the driving electrodes which are arranged in a crossed mode.
4. The display panel according to claim 3, wherein the tactile electrodes and the driving electrodes at least partially overlap in a projection direction perpendicular to a display surface of the touch display substrate.
5. The display panel according to claim 1, wherein the touch display substrate comprises a touch circuit layer, and the touch circuit layer comprises a receiving electrode layer, a first insulating layer and a driving electrode layer which are sequentially stacked;
the driving electrode layer comprises a grid electrode as a driving electrode;
the tactile feedback substrate comprises a tactile electrode layer and an insulating protective layer which are sequentially stacked;
the tactile electrode layer comprises a transparent surface electrode as a tactile electrode;
the electrode overlapping area of the grid electrode and the transparent surface electrode is more than or equal to 60 percent;
or the touch display substrate comprises a touch circuit layer, wherein the touch circuit layer comprises a receiving electrode layer, a first insulating layer and a driving electrode layer which are sequentially stacked;
the driving electrode layer comprises a driving electrode;
the tactile feedback substrate comprises a tactile electrode layer and an insulating protective layer which are sequentially stacked;
the tactile electrode layer comprises tactile electrodes;
the driving electrode and the tactile electrode are both grid electrodes, and the electrode overlapping area of the driving electrode and the tactile electrode is greater than or equal to 80%.
6. The display panel of claim 1, wherein the total actuator area is 5-30% of the total display panel area; or; the actuators are arranged at a density of 5-50 per square millimeter.
7. The display panel according to any one of claims 1 to 6, wherein the touch display substrate comprises a display area and a non-display area located around the display area;
the haptic feedback substrate and the actuator are located on the same side of the touch display substrate, and the actuator is located in the non-display area.
8. A display panel as claimed in any one of claims 1 to 6 wherein the display panel is a foldable or rollable display panel and the actuator is located at a distance of 15um to 500um from a bending central axis of the display panel.
9. The display panel according to any one of claims 1 to 6, wherein the touch display substrate comprises a display area and a non-display area located around the display area, and a display middle frame located around the non-display area, a sound-generating device or a vibrating device is disposed on the display middle frame, and the actuator is disposed on the inner side of the display middle frame, and the distance from the actuator to the sound-generating device or the vibrating device is 15um-50 cm.
10. A touch method of a display panel according to any one of claims 1 to 9, comprising the steps of:
acquiring a touch gesture for touching the display panel;
and controlling the actuator to vibrate and/or improve the touch driving voltage of the touch display substrate according to the corresponding relation between the touch gesture and the type of the touch feedback, so that the touch feedback substrate generates electrostatic touch feedback.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210103991.0A CN114442850A (en) | 2022-01-27 | 2022-01-27 | Display panel and touch method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210103991.0A CN114442850A (en) | 2022-01-27 | 2022-01-27 | Display panel and touch method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024152199A1 (en) * | 2023-01-17 | 2024-07-25 | 京东方科技集团股份有限公司 | Tactile feedback panel, driving method therefor and tactile feedback apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024152199A1 (en) * | 2023-01-17 | 2024-07-25 | 京东方科技集团股份有限公司 | Tactile feedback panel, driving method therefor and tactile feedback apparatus |
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