CN106445241B - Touch display screen, contact identification method and module and touch display device - Google Patents
Touch display screen, contact identification method and module and touch display device Download PDFInfo
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- CN106445241B CN106445241B CN201610947130.5A CN201610947130A CN106445241B CN 106445241 B CN106445241 B CN 106445241B CN 201610947130 A CN201610947130 A CN 201610947130A CN 106445241 B CN106445241 B CN 106445241B
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- display panel
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—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
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—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
Abstract
The invention discloses a touch display screen, a contact identification method and module and a touch display device, and belongs to the technical field of touch display. The touch display screen includes: the touch control display screen comprises a display panel, a plurality of pressure sensing units and a frame, wherein the pressure sensing units and the frame are arranged around the display panel, and the orthographic projection of the frame on the display panel covers the orthographic projection of each pressure sensing unit in the pressure sensing units on the display panel. The invention is used for the touch display device.
Description
Technical Field
The invention relates to the technical field of touch display, in particular to a touch display screen, a contact identification method and module and a touch display device.
Background
With the continuous development of touch display technology, touch display devices are widely applied to the display field, and common touch display devices are smart phones, tablet computers, smart car terminals and the like.
Touch display devices typically include a touch display screen. In the related art, a touch display screen includes a backlight module, a display panel, an Integrated Circuit (IC) and a frame, where the display panel is disposed on a light emitting side of the backlight module, a plurality of touch units arranged in a matrix are disposed between the display panel and the backlight module, the display panel includes a display area and a non-display area, the touch units are located on the display area of the display panel, the frame is disposed around the display panel and fastened to the backlight module, the IC is connected to the display panel and each of the touch units, and the IC can control the display panel to implement a display function of the touch display screen and also control the touch units to implement a touch function of the touch display screen, so that the touch display screen can display images and perform human-computer interaction with a user.
In the process of implementing the invention, the inventor finds that the related art has at least the following problems:
because the touch unit is arranged between the display panel and the backlight module and is positioned on the display area of the display panel, the touch unit has a large influence on the optical performance of the display panel, and the optical performance of the touch display screen is poor.
Disclosure of Invention
In order to solve the problem of poor optical performance of the touch display screen, the invention provides the touch display screen, a contact identification method and module and a touch display device. The technical scheme is as follows:
in a first aspect, a touch display screen is provided, which includes: a display panel, a plurality of pressure sensing units and a frame,
the plurality of pressure sensing units and the frame are arranged around the display panel, and the orthographic projection of the frame on the display panel covers the orthographic projection of each pressure sensing unit in the plurality of pressure sensing units on the display panel.
Optionally, the display panel is an organic light emitting display panel or a liquid crystal display panel,
when the display panel is a liquid crystal display panel, the touch display screen further includes: the display panel is superposed on the backlight module, the frame is arranged around the display panel and the backlight module, and each pressure sensing unit in the pressure sensing units is positioned between the light-emitting surface of the display panel and the frame, or each pressure sensing unit in the pressure sensing units is positioned between the backlight module and the frame.
Optionally, the touch display screen further includes: a back plate, a back plate and a back plate,
the backplate sets up display panel's income light side, just the backplate with the frame lock joint, or, the backplate with frame integrated into one piece, every forced induction unit in a plurality of forced induction units is located display panel's play plain noodles with between the frame, display panel with be provided with the spacer between the backplate, the spacer is in orthographic projection on the display panel is located the peripheral region of display panel.
Optionally, each of the plurality of pressure sensing units is located on the display panel; alternatively, the first and second electrodes may be,
each pressure sensing unit in the plurality of pressure sensing units is positioned on the frame; alternatively, the first and second electrodes may be,
each pressure sensing unit in the plurality of pressure sensing units is positioned on the backlight module; alternatively, the first and second electrodes may be,
and part of the pressure sensing units are positioned on the display panel, and part of the pressure sensing units are positioned on the frame.
Optionally, the plurality of pressure sensing units are uniformly distributed around the display panel.
In a second aspect, a contact identification method is provided, the method comprising:
detecting a pressure sensing signal through a plurality of pressure sensing units of a touch display screen, wherein the touch display screen comprises a display panel and a frame, the pressure sensing units and the frame are arranged around the display panel, and the orthographic projection of the frame on the display panel covers the orthographic projection of each pressure sensing unit in the pressure sensing units on the display panel;
inquiring a corresponding relation table of position coordinates and induction signals according to the pressure induction signals detected by the pressure induction units to obtain target position coordinates, wherein the corresponding relation table of the position coordinates and the induction signals is used for recording the pressure induction signals detected by the pressure induction units when position points indicated by the position coordinates touch the touch display screen;
and determining the position points indicated by the target position coordinates as contact points.
Optionally, before the querying a correspondence table between the sensing signals and the position coordinates according to the pressure sensing signals detected by the plurality of pressure sensing units, the method further includes:
detecting pressure induction signals generated when pressure is applied to a first position point of the touch display screen through the plurality of pressure induction units;
determining position coordinates of the first position point;
and generating a corresponding relation table of the position coordinates and the induction signals according to the pressure induction signals generated when pressure is applied to each position point of the touch display screen and the position coordinates of each position point.
In a third aspect, a contact identification module is provided, the contact identification module comprising:
the touch screen comprises a first detection submodule, an inquiry submodule and a first determination submodule, wherein the first detection submodule is respectively connected with each pressure sensing unit of a plurality of pressure sensing units of the touch screen, the first detection submodule is also connected with the inquiry submodule, the inquiry submodule is connected with the first determination submodule,
the first detection submodule is used for detecting pressure sensing signals through the pressure sensing units, the touch display screen comprises a display panel and a frame, the pressure sensing units and the frame are arranged around the display panel, and the orthographic projection of the frame on the display panel covers the orthographic projection of each pressure sensing unit in the pressure sensing units on the display panel;
the query submodule is used for querying a corresponding relation table of position coordinates and sensing signals according to the pressure sensing signals detected by the pressure sensing units to obtain target position coordinates, and the corresponding relation table of the position coordinates and the sensing signals is used for recording the pressure sensing signals detected by the pressure sensing units when position points indicated by the position coordinates touch the touch display screen;
and the first determining submodule is used for determining the position points indicated by the target position coordinates as contact points.
Optionally, the contact identification module further comprises:
a second detection submodule connected with each of the plurality of pressure sensing units, a second determination submodule connected with the second determination submodule, and a generation submodule,
the second detection submodule is used for detecting a pressure induction signal generated when pressure is applied to a first position point of the touch display screen through the plurality of pressure induction units;
the second determining submodule is used for determining the position coordinates of the first position point;
the generating submodule is used for generating a corresponding relation table of the position coordinates and the induction signals according to the pressure induction signals generated when pressure is applied to all the position points of the touch display screen and the position coordinates of all the position points.
In a fourth aspect, a touch display device is provided, which includes: the touch display screen of the first aspect, and the contact identification module of the third aspect, the contact identification module is connected with the touch display screen.
The technical scheme provided by the invention has the beneficial effects that:
according to the touch display screen, the contact identification method and module and the touch display device provided by the invention, the plurality of pressure sensing units are arranged around the display panel, and the orthographic projection of the frame on the display panel covers the orthographic projection of each pressure sensing unit in the plurality of pressure sensing units on the display panel, so that the influence of the pressure sensing units on the optical performance of the display panel is small, the problem that the optical performance of the touch display screen is poor due to the large influence of the touch units on the optical performance of the display panel in the related technology is solved, the influence of the pressure sensing units on the optical performance of the display panel is reduced, and the optical performance of the touch display screen is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a touch display screen according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another touch display screen according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another touch display screen according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another touch display screen according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another touch display screen according to an embodiment of the present invention;
fig. 6 is a top view of a touch display screen according to an embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating the embodiment of FIG. 4 when the touch screen is pressed;
FIG. 8 is a schematic view of the embodiment of FIG. 5 showing a touch screen being pressed;
FIG. 9 is a flowchart of a method of contact identification according to an embodiment of the present invention;
FIG. 10 is a method flow diagram of another method for identifying contacts provided by embodiments of the present invention;
FIG. 11 is a block diagram of a contact identification module provided by an embodiment of the present invention;
fig. 12 is a block diagram of another contact identification module provided by an embodiment of the invention.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. 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.
Referring to fig. 1, which shows a schematic structural diagram of a touch display screen 00 according to an embodiment of the present invention, referring to fig. 1, the touch display screen 00 includes: display panel 001, a plurality of forced induction unit 002 and frame 003 all set up around display panel 001, and the orthographic projection of frame 003 on display panel 001 covers the orthographic projection of each forced induction unit 002 in a plurality of forced induction unit 002 on display panel 001.
In summary, in the touch display screen provided in the embodiment of the present invention, the plurality of pressure sensing units are disposed around the display panel, and the orthographic projection of the frame on the display panel covers the orthographic projection of each pressure sensing unit in the plurality of pressure sensing units on the display panel, so that the pressure sensing units have a smaller influence on the optical performance of the display panel, and the problem that the touch units have a larger influence on the optical performance of the display panel in the related art, which results in a poorer optical performance of the touch display screen, is solved, and the effects of reducing the influence of the pressure sensing units on the optical performance of the display panel and improving the optical performance of the touch display screen are achieved.
Optionally, the frame 003 may be made of a high-hardness material such as aluminum, iron, or plastic, so as to avoid deformation of the frame 003, the display panel 001 may include a display region and a non-display region (also referred to as a peripheral region), the non-display region is located around the display region, and an area of an orthographic projection of the frame 003 on the display panel 001 is smaller than an area of the non-display region of the display panel 001.
Further, the display panel 001 may be an organic light emitting display panel, or may be a liquid crystal display panel, and the touch display panel 00 provided in the embodiment of the present invention is described below by taking the display panel 001 as the organic light emitting display panel and the liquid crystal display panel as examples.
In the first aspect, when the display panel 001 is an organic light emitting display panel, the touch display panel 00 may be configured as shown in fig. 2 or fig. 3.
Referring to fig. 2, each of the pressure sensing units 002 is located between a light emitting surface (not labeled in fig. 2) of the display panel 001 and the frame 003, and the touch display screen 00 further includes: the back plate 004 is disposed on the light incident side of the display panel 001, the back plate 004 is fastened to the frame 003, or the back plate 004 and the frame 003 are integrally formed, a spacer 005 is disposed between the display panel 001 and the back plate 004, and an orthographic projection of the spacer 005 on the display panel 001 is located in a peripheral area of the display panel 001. In fig. 2, the pressure sensing units 002 may be all located on the display panel 001, all located on the frame 003, or a part of the pressure sensing units 002 may be located on the display panel 001 and a part of the pressure sensing units 002 may be located on the frame 003. Wherein, the pressure sensing unit 002 can be fabricated on the display panel 001 or on the frame 003 by a composition process; alternatively, the pressure sensing unit 002 may be prepared first, and then the pressure sensing unit 002 is adhered to the dummy (chinese: peripheral) region or the frame 003 of the display panel 001 by using an adhesive tape; alternatively, the pressure sensing unit 002 may be prepared on an adhesive tape, and the pressure sensing unit 002 is adhered on the dummy area or the frame 003 of the display panel 001 by using the adhesive tape, which is not limited in the embodiment of the present invention. In practical applications, one pressure sensing unit 002 may include a signal transmitting subunit (not shown in fig. 2) and a signal receiving subunit (not shown in fig. 2), where the signal transmitting subunit and the signal receiving subunit may both be located on the display panel 001, or both may be located on the frame 003, or the signal transmitting subunit is located on the display panel 001, and the signal receiving subunit is located on the frame 003, and after applying pressure to the pressure sensing unit 002, the capacitance between the signal receiving subunit and the signal transmitting subunit changes, so that the signal receiving unit senses a signal difference, and thus, the pressure sensing signal is detected.
Referring to fig. 3, each pressure sensing unit 002 of the plurality of pressure sensing units 002 is located between the light incident surface (not labeled in fig. 3) of the display panel 001 and the frame 003, and optionally, the touch display screen 00 further includes: the back plate 004, the back plate 004 is disposed on the light incident side of the display panel 001, and the back plate 004 is fastened to the frame 003, or the back plate 004 and the frame 003 are integrally formed, and each of the pressure sensing units 002 is disposed between the light incident surface (not shown in fig. 3) of the display panel 001 and the back plate 004. In fig. 3, the pressure sensing units 002 may be all located on the display panel 001, or all located on the back plate 004, or a part of the pressure sensing units 002 may be located on the display panel 001, and a part of the pressure sensing units 002 may be located on the back plate 004. Wherein, the pressure sensing unit 002 can be manufactured on the display panel 001 or the back plate 004 through a composition process; or, the pressure sensing unit 002 may be prepared first, and then the pressure sensing unit 002 is adhered to the dummy area of the display panel 001 or the back plate 004 by using an adhesive tape; alternatively, the pressure sensing unit 002 may be prepared on an adhesive tape, and the pressure sensing unit 002 is adhered on the dummy area of the display panel 001 or the back plate 004 by using the adhesive tape, which is not limited in the embodiment of the present invention. In practical applications, one pressure sensing unit 002 may include a signal transmitting subunit (not shown in fig. 3) and a signal receiving subunit (not shown in fig. 3), where the signal transmitting subunit and the signal receiving subunit may both be located on the display panel 001, or both may be located on the backplane 004, or the signal transmitting subunit is located on the display panel 001, and the signal receiving subunit is located on the backplane 004, which is not limited in this embodiment of the present invention.
In a second aspect, when the display panel 001 is a liquid crystal display panel, the touch display screen 00 can be as shown in fig. 4 or fig. 5.
Referring to fig. 4, on the basis of fig. 1, the touch display screen 00 further includes: backplate 004 and platelike backlight module 006, display panel 001 superposes on backlight module 006, frame 003 sets up around display panel 001 and backlight module 006, every forced induction unit 002 among a plurality of forced induction units 002 is located between the play plain noodles (not marked in fig. 4) of display panel 001 and frame 003, backplate 004 sets up the income light side at display panel 001, and backplate 004 and frame 003 lock joint, or, backplate 004 and frame 003 integrated into one piece, be provided with spacer 005 between display panel 001 and the backplate 004, the orthographic projection of spacer 005 on display panel 001 is located the peripheral region of display panel 001. In fig. 4, the pressure sensing units 002 may be all located on the display panel 001, all located on the frame 003, or a part of the pressure sensing units 002 may be located on the display panel 001 and a part of the pressure sensing units 002 may be located on the frame 003. Wherein, the pressure sensing unit 002 can be fabricated on the display panel 001 or on the frame 003 by a composition process; or, the pressure sensing unit 002 may be prepared first, and then the pressure sensing unit 002 is adhered to the dummy area or the frame 003 of the display panel 001 by using an adhesive tape; alternatively, the pressure sensing unit 002 may be prepared on an adhesive tape, and the pressure sensing unit 002 is adhered on the dummy area or the frame 003 of the display panel 001 by using the adhesive tape, which is not limited in the embodiment of the present invention. In practical applications, one pressure sensing unit 002 may include a signal transmitting subunit (not shown in fig. 4) and a signal receiving subunit (not shown in fig. 4), and the signal transmitting subunit and the signal receiving subunit may both be located on the display panel 001, or both may be located on the frame 003, or the signal transmitting subunit is located on the display panel 001, and the signal receiving subunit is located on the frame 003, which is not limited in this embodiment of the present invention.
Optionally, in the embodiment of the present invention, the spacer 005 may be a continuous or discontinuous black spacer, and the spacer 005 has a certain elasticity, and the spacer 005 may be made of a material with an insulating property, such as foam or resin, so as to avoid an influence of the spacer 005 on the pressure sensing signal of the pressure sensing unit 002. The spacer 005 is disposed to enable a certain distance to exist between the display panel 001 (or the backlight module 006) and the back plate 004, so that the display panel 001 has a larger deformation space, and the display panel 001 can be deformed to different degrees by different pressures, so that the spacer 005 can expand a pressure sensing range and expand a pressure detection range, and therefore, the larger the height of the spacer 005, the wider the pressure detection range, but the larger the height of the spacer 005, the larger the thickness of the touch display screen may increase, which makes it difficult to achieve the thinning of the touch display screen.
Referring to fig. 5, on the basis of fig. 1, the touch display screen 00 further includes: the display panel 001 is stacked on the backlight module 006, the frame 003 is disposed around the display panel 001 and the backlight module 006, the backplane 004 is disposed on the light incident side of the display panel 001, and the backplane 004 is fastened to the frame 003, or the backplane 004 and the frame 003 are integrally formed, each pressure sensing unit 002 of the pressure sensing units 002 is disposed between the backlight module 006 and the frame 003, and the orthographic projection of the frame 003 on the display panel 001 covers the orthographic projection of the pressure sensing units 002 on the display panel 001, in fig. 5, each pressure sensing unit 002 of the pressure sensing units 002 is actually disposed between the backlight module 006 and the backplane 004, the pressure sensing units 002 can be disposed on the backlight module 006, or disposed on the backplane 004, or some of the pressure sensing units 002 can be disposed on the backlight module 006, part of the pressure sensing unit 002 is located on the back plate 004. Wherein, the pressure sensing unit 002 can be manufactured on the backlight module 006 or the back plate 004 through a composition process; or, the pressure sensing unit 002 may be prepared first, and then the pressure sensing unit 002 is adhered to the backlight module 006 or the back plate 004 by using an adhesive tape; alternatively, the pressure sensing unit 002 may be prepared on an adhesive tape, and the pressure sensing unit 002 is adhered on the backlight module 006 or the back plate 004 by using the adhesive tape, which is not limited in the embodiment of the present invention. In practical applications, one pressure sensing unit 002 may include a signal transmitting subunit (not shown in fig. 5) and a signal receiving subunit (not shown in fig. 5), and the signal transmitting subunit and the signal receiving subunit may be both located on the backlight module 006 or the backplane 004, or the signal transmitting subunit is located on the backlight module 006 and the signal receiving subunit is located on the backplane 004, which is not limited in this embodiment of the present invention.
Optionally, the backlight module 006 may be a backlight film, and a reflective film is disposed on a side of the backlight module 006 away from the display panel 001, so that more light can be emitted from a light emitting surface of the display panel 001, and the backlight module 006 may be made of a material with better toughness, so that the stress can be bent. The back plate 004 can be made of a material with high hardness and being not easy to bend, wherein in fig. 2 and 4, the back plate 004 is located below the spacer 005, and in practical applications, the back plate 004 may not be arranged, and the spacer 005 is directly arranged on the battery of the touch display device or other systems of the whole device, which is not limited in the embodiment of the present invention.
It should be noted that, in the embodiment of the present invention, the pressure sensing unit 002 may be located on the display panel 001, the frame 003, or the back plate 004, the specific setting position of the pressure sensing unit 002 may be determined according to the cost and yield of the touch display screen, and the pressure sensing unit 002 may be a capacitive pressure sensing unit or a pressure-sensitive pressure sensing unit, where the pressure-sensitive pressure sensing unit is made of a pressure-sensitive material, and when different pressures are applied, the electrical signals output by the pressure sensing unit 002 are different, preferably, the pressure sensing unit 002 is made of a pressure-sensitive material, which is not limited in this embodiment of the present invention.
Further, referring to fig. 6, which shows a top view of the touch display screen 00 according to the embodiment of the present invention, a plurality of pressure sensing units 002 are uniformly distributed around the display panel 001. In fig. 6, the individual pressure-sensitive cells 002 are not shown, and the distribution of the plurality of pressure-sensitive cells 002 is shown by way of example only.
It should be noted that the touch display screen 00 provided in the embodiment of the present invention can be applied to a touch display device, and the touch display device can further include a touch IC, the touch IC includes a contact identification module, the contact identification module can be connected to each pressure sensing unit 002 of the plurality of pressure sensing units 002, so that when a user touches the touch display screen 00, each pressure sensing unit 002 can detect a pressure sensing signal, and the contact identification module can determine a position of a contact formed when the user touches the touch display screen 00 according to the pressure sensing signal detected by each pressure sensing unit 002, for example, the contact identification module and each pressure sensing unit 002 can be connected by a signal line or by other methods, and when the pressure sensing unit 002 is adhered to a dummy area, a frame 003, a back panel 004 or the backlight module 006 of the display panel 001 by an adhesive tape, the contact identification module may be directly connected to the pressure sensing unit 002 through a signal line, or may be connected to the pressure sensing unit 002 through a signal line and an anisotropic conductive adhesive, so that the contact identification module is connected to the pressure sensing unit 002, which is not described in detail herein. For example, please refer to fig. 7, which shows a schematic diagram of the touch display screen 00 shown in fig. 4 when being pressed, referring to fig. 7, when a user touches the touch display screen, a pressure may be applied to the display panel 001, so that both the display panel 001 and the backlight module 006 are stressed to generate deformation (the deformation degree is in positive correlation with the pressure), the peripheries of the display panel 001 and the backlight module 006 are tilted upward, the display panel 001 applies a pressure to each pressure sensing unit 002, each pressure sensing unit 002 can detect the pressure applied by the display panel 001 and obtain a pressure sensing signal, and the contact point identification module determines a position of a contact point formed by the user touching the touch display screen according to the pressure sensing signal detected by each pressure sensing unit 002. Referring to fig. 8, which shows a schematic diagram of the touch display screen 00 shown in fig. 5 when being pressed, referring to fig. 8, when a user touches the touch display screen, a pressure may be applied to the display panel 001, so that both the display panel 001 and the backlight module 006 are stressed to deform, the display panel 001 applies a pressure to each pressure sensing unit 002 through the backlight module 006, each pressure sensing unit 002 can detect the pressure applied by the backlight module 006 and obtain a pressure sensing signal, and the contact point identification module determines a position of a contact point formed when the user touches the touch display screen according to the pressure sensing signal detected by each pressure sensing unit 002. Among them, the plurality of pressure sensing units 002 are uniformly distributed around the display panel 001, which can improve the accuracy of contact recognition.
It should be further noted that, in the embodiment of the present invention, the touch point is identified by using the pressure sensing unit 002 as an example, in practical applications, a capacitive touch unit may be disposed in the display panel 001, the touch point may also be identified by using the capacitive touch unit in the display panel 001, and a process of identifying the touch point by using the capacitive touch unit in the display panel 001 may refer to related technologies, which is not described herein again.
It should be further noted that, in the embodiment of the present invention, the pressure is applied to the touch display screen 00 shown in fig. 4 and 5 as an example, and the process of applying the pressure to the touch display screen 00 shown in fig. 2 and 3 is similar to this, and the embodiment of the present invention is not described again here.
It should be noted that the touch display screen provided by the embodiment of the present invention has a wide range of pressure detection, and therefore, the touch display screen can be applied to a touch display device that is difficult to detect a small pressure (slow to small deformation), such as an exhibition stand and an automobile lamp.
According to the touch display screen provided by the embodiment of the invention, the pressure sensing unit is not required to be prepared in the backlight part or the effective display Area (AA) of the display panel, but the pressure sensing unit is arranged in the peripheral Area of the display panel, so that the pressure sensing unit does not influence the display performance of the display panel, the backlight part and the AA Area are not influenced in the process of preparing the pressure sensing unit, in addition, the complicated signal control unit is required to prepare the pressure sensing unit in the AA Area of the display panel, the power consumption of the display panel is improved, the manufacturing difficulty is increased, the pressure sensing unit is only arranged in the peripheral Area of the display panel, the number of the pressure sensing units is reduced, the signal control is simplified, and the power consumption of the display panel is reduced. For example, in the related art, the pressure sensing units are usually disposed on the whole surface of the display panel, so that the number of the pressure sensing units is i × j (i is the number of rows, and j is the number of columns), the pressure sensing units are disposed only in the peripheral region of the display panel, and the number of the pressure sensing units is 2 × i + j, so that the number of the pressure sensing units is significantly reduced, the power consumption of touch (chinese: touch) is reduced, and the touch wiring and IC design is simplified. Moreover, the difference between the signal analysis method of the present invention and the signal analysis method of the related art is large, the touch display screen of the related art needs to analyze the pressure sensing signals of i × j pressure sensing units to obtain the position coordinates of the touch points, and the touch display screen of the related art only needs to analyze the pressure sensing signals of 2 × (i + j) pressure sensing units in the peripheral area of the display panel to obtain the position coordinates of the touch points.
In summary, in the touch display screen provided in the embodiment of the present invention, the plurality of pressure sensing units are disposed around the display panel, and the orthographic projection of the frame on the display panel covers the orthographic projection of each pressure sensing unit in the plurality of pressure sensing units on the display panel, so that the pressure sensing units have a smaller influence on the optical performance of the display panel, and the problem that the touch units have a larger influence on the optical performance of the display panel in the related art, which results in a poorer optical performance of the touch display screen, is solved, and the effects of reducing the influence of the pressure sensing units on the optical performance of the display panel and improving the optical performance of the touch display screen are achieved.
In the field of display technology, liquid crystal display panels are widely applied to modern digital information equipment due to the advantages of small size, low power consumption, no radiation, high resolution and the like, and the pressure sensing technology refers to the technology capable of detecting external stress, and the technology is applied to the fields of industrial control, medical treatment and the like for a long time. Touch display screens in the related art are generally: the design needs to be wired at the backlight portion of the display panel, and a separate IC is needed to implement the output and reception of signals, so that the design cost is high and the process is very complex, and in addition, the touch display screen in the related art has a low range of pressure sensing. The touch display screen provided by the embodiment of the invention has the advantages that the pressure sensing units are arranged around the display panel, wiring is not needed in the backlight part, so the design cost is low, the process requirement is low, the embodiment of the invention can realize contact identification through a system of the touch display device, and signal output and receiving are realized without a separate touch IC, so the design and the process are simple, in addition, when the touch display screen in the related technology detects the pressure sensing signal, the pressure cannot be detected after reaching a certain value, the touch display screen provided by the embodiment of the invention has the advantages that the spacer is arranged between the display panel and the back plate, the spacer exists a certain distance between the display panel and the back plate, further the display panel has a larger deformation space, and the display panel can generate deformation of different degrees due to different pressures, therefore, the embodiment of the invention enlarges the range of pressure sensing and enlarges the range of pressure detection.
The touch display screen provided by the embodiment of the invention can be applied to the following touch point identification method, and the touch point identification method in the embodiment of the invention can be referred to the description in the following embodiments.
Referring to fig. 9, a flowchart of a method for identifying a touch point according to an embodiment of the present invention is shown, where the method for identifying a touch point can be applied to the touch display screen shown in any one of fig. 1 to fig. 5, and the method for identifying a touch point can be executed by a touch point identification module, which can be a functional module in a touch IC. Referring to fig. 9, the contact identifying method includes:
And 902, inquiring a corresponding relation table of the position coordinates and the sensing signals according to the pressure sensing signals detected by the pressure sensing units to obtain target position coordinates, wherein the corresponding relation table of the position coordinates and the sensing signals is used for recording the pressure sensing signals detected by the pressure sensing units when the position points indicated by the position coordinates touch the touch display screen.
And step 903, determining the position point indicated by the target position coordinate as a contact point.
In summary, in the contact identification method provided in the embodiment of the present invention, because the plurality of pressure sensing units of the touch display screen are disposed around the display panel, and the orthographic projection of the frame of the touch display screen on the display panel covers the orthographic projection of each pressure sensing unit of the plurality of pressure sensing units on the display panel, the influence of the pressure sensing units on the optical performance of the display panel is small, the problem that the influence of the touch units on the optical performance of the display panel is large in the related art, which results in poor optical performance of the touch display screen, is solved, the influence of the pressure sensing units on the optical performance of the display panel is reduced, and the optical performance of the touch display screen is improved.
Referring to fig. 10, a flowchart of another method for identifying a touch point according to an embodiment of the present invention is shown, where the method for identifying a touch point can be used in the touch display screen shown in any one of fig. 1 to 5, and the method for identifying a touch point can be executed by a touch point identification module, which can be a functional module in a touch IC. Referring to fig. 10, the contact recognition method includes:
The touch display screen may be the touch display screen 00 shown in any one of fig. 1 to 8, the contact identification module may be connected to each of the pressure sensing units of the touch display screen 00, before the touch display screen is used, the contact identification module may establish a correspondence table of position coordinates and sensing signals in a calibration manner, when the correspondence table of the position coordinates and the sensing signals is established, pressure may be applied to each position point of the touch display screen and a corresponding pressure sensing signal may be detected, and according to the position coordinates of each position point and the pressure sensing signal detected when pressure is applied to each position point, the correspondence table of the position coordinates and the sensing signals may be established. The process of specifically creating the corresponding relationship table between the position coordinates and the sensing signals may be as shown in step 1001 and in steps 1002 and 1003 described below.
Alternatively, the touch point identification module may apply the same pressure at each location point of the touch display screen, specifically, the touch point identification module applies a preset pressure at a first location point of the touch display screen, and detects a pressure sensing signal through a plurality of pressure sensing units on the touch display screen, where the first location point may be any location point on the touch display screen, the touch point identification module may apply the preset pressure to the first location point by placing a weight with a preset weight at the first location point of the touch display screen, the preset pressure and the preset weight may be set according to actual conditions, and the preset pressure and the preset weight satisfy the gravity formula N ^ mg, N represents the preset pressure (unit: newton), m represents the preset weight (unit: kilogram), g represents the acceleration of gravity, and the value of g is usually 9.8 chinese m/s ^2 (m/sec), the embodiment of the present invention is not limited thereto.
For example, taking fig. 7 as an example, when a pressure is applied to a first position point (actually, the first position point of the display panel 001) of the touch display screen 00, the display panel 001 and the backlight module 006 are both stressed to deform, the peripheries of the display panel 001 and the backlight module 006 tilt upwards, the display panel 001 applies a pressure to each pressure sensing unit 002 of the touch display screen 00, and each pressure sensing unit 002 can detect the pressure applied by the display panel 001 and obtain a pressure sensing signal. Further, for example, referring to fig. 8, when a pressure is applied to a first position point (actually, the first position point of the display panel 001) of the touch display screen 00, the display panel 001 and the backlight module 006 are both stressed to deform, the display panel 001 applies a pressure to each pressure sensing unit 002 through the backlight module 006, and each pressure sensing unit 002 can detect the pressure applied by the backlight module 006 to obtain a pressure sensing signal.
The touch point identification module may determine the position coordinates of the first position point in a two-dimensional coordinate system xoy (a coordinate system formed by an x axis and a y axis, and the intersection point of the x axis and the y axis is o), and the coordinates of the first position point may be (x1, y 1). The process of determining the position coordinate of the first position point in step 1002 may refer to related technologies, and is not described herein again in the embodiments of the present invention.
It should be noted that, the touch point identification module may perform the above steps 1001 and 1002 on each position point on the touch display screen to determine the position coordinates of each position point and the pressure sensing signal detected when the pressure is applied to each position point.
After the touch point identification module determines the pressure sensing signals generated when pressure is applied to each position point of the touch display screen and the position coordinates of each position point, a corresponding relation table of the position coordinates and the sensing signals can be generated according to the pressure sensing signals generated when pressure is applied to each position point of the touch display screen and the position coordinates of each position point, and the corresponding relation table is used for recording the pressure sensing signals detected by the plurality of pressure sensing units when the position points indicated by the position coordinates touch the touch display screen.
For example, assuming that the touch display screen includes p position points and q pressure sensing units, where p and q are integers greater than or equal to 1, the table of correspondence between the position coordinates and the sensing signals may be as shown in table 1 below, and the table 1 is only described by taking the example of applying the same pressure to p position points:
TABLE 1
Referring to table 1, when pressure is applied to the position point indicated by the position coordinates (x1, y1), the pressure sensing signals detected by the pressure sensing units 1 to q are: s11, S12, S13.. S1q, when pressure is applied to the position point indicated by the position coordinate (x2, y2), the pressure-sensitive signals detected by the pressure-sensitive units 1 to q are respectively: s21, S22, S23. When pressure is applied to any position point of the touch display screen, some pressure sensing units may not detect a pressure sensing signal in each pressure sensing unit, so that a pressure sensing signal equal to 0 may exist in table 1, which is not limited in the embodiment of the present invention.
It should be noted that, after the touch point identification module generates the correspondence table between the position coordinates and the sensing signals, the correspondence table may be stored, so that in the process of using the touch display screen, the touch points formed by the user touching the touch display screen are identified according to the correspondence table. Specifically, the correspondence table may be burned into the touch IC, or the correspondence table may also be stored in a system of the touch display device, which is not limited in the embodiment of the present invention.
It should be further noted that, in the embodiment of the present invention, the same pressure is applied to each position point of the touch display screen and the pressure sensing signal is detected, and the corresponding relationship table between the position coordinate and the sensing signal is established according to the detected pressure sensing signal and the position coordinate of each position point, for example, in practical applications, different pressures (for example, the pressure F1 is applied to the first position point, the pressure F2 is applied to the second position point, and the like) may be applied to each position point of the touch display screen and the pressure sensing signal is detected, and the corresponding relationship table between the pressure, the position coordinate, and the sensing signal may be established according to the pressure applied to each position point, the pressure sensing signal detected when the pressure is applied to each position point, and the position coordinate of each position point; or, different pressures may be sequentially applied to each position point of the touch display screen and a pressure sensing signal under the corresponding pressure is detected (for example, the pressure F1 is applied to the first position point and the pressure sensing signal is detected, and then the pressure F2 is applied to the first position point and the pressure sensing signal is detected, etc.), and then a correspondence table of the pressure, the position coordinate and the sensing signal is established according to the different pressures applied to the position points, the pressure sensing signal detected when the corresponding pressure is applied and the position coordinate of each position point, which is not described herein again in the embodiments of the present invention.
In the using process of the touch display screen, the contact identification module can detect pressure sensing signals in real time through a plurality of pressure sensing units of the touch display screen. Specifically, when a user touches the touch display screen, pressure may be applied to the touch display screen, and at this time, the pressure sensing units of the touch display screen may detect the pressure sensing signal. For example, the touch point identification module detects pressure sensing signals through q pressure sensing units of the touch display screen, where the pressure sensing signals detected by the q pressure sensing units are S21, S22, and S23.
After the contact identification module detects the pressure sensing signal, the corresponding relation table of the position coordinate and the sensing signal can be inquired to obtain the target position coordinate. The table of the correspondence between the position coordinates and the sensing signals may be as shown in table 1.
For example, the contact identification module may look up the correspondence table shown in table 1 according to the pressure sensing signals S21, S22, and S23.... S2q detected by the q pressure sensing units, so as to obtain a target position coordinate as (x2, y 2).
After the contact point identification module obtains the target position coordinates, the position points indicated by the target position coordinates can be determined as the contact points. Illustratively, the touch point identification module determines a location point indicated by the target location coordinates (x2, y2) as a touch point, i.e., a pressure location point of pressure generated by the user touching the touch-sensitive display screen.
It should be noted that, in the above steps 1004 to 1006, the process of identifying the touch point formed by the touch of the user on the touch display screen by the touch display screen in the actual use process is shown, in the actual application, the frame of the touch display screen and the like may be deformed by a stress, which may cause the accuracy of identifying the touch point according to the correspondence table shown in table 1 to be reduced, and therefore, in the use process of the touch display screen, the correspondence table shown in table 1 may also be calibrated and updated regularly or irregularly, so as to compensate the influence of the deformation on the pressure sensing signal. Specifically, the pressure sensing signal and the position coordinates of each position point on the touch display screen may be determined according to the step 1001 and the step 1002, and then the correspondence table may be calibrated and updated according to the pressure sensing signal detected when the pressure is applied to each position point and the position coordinates of each position point, which is not described herein again in the embodiments of the present invention.
It should be further noted that, when the contact identification module establishes the correspondence table of the pressure, the position coordinate and the sensing signal, the contact identification module may further obtain the pressure (specifically, the obtained pressure value) when the user touches the touch display screen by querying the correspondence table of the pressure, the position coordinate and the sensing signal. The touch display screen provided by the embodiment of the invention is provided with the spacer, the display panel and the back plate have a certain distance due to the existence of the spacer, so that the display panel can have a larger deformation space, and the display panel can be deformed to different degrees due to different pressures.
It should be further noted that, in the contact identification method provided in the embodiment of the present invention, the size, distribution, and the like of the pressure sensing signals detected by the pressure sensing units on two sides, three sides, or four sides of the display panel may be used to perform contact identification, in addition, a capacitive touch unit may be disposed in the display panel, and contact identification may also be performed by the capacitive touch unit, which has been clearly described in the related art, and thus, the embodiment of the present invention is not described herein again.
In summary, in the contact identification method provided in the embodiment of the present invention, because the plurality of pressure sensing units of the touch display screen are disposed around the display panel, and the orthographic projection of the frame of the touch display screen on the display panel covers the orthographic projection of each pressure sensing unit of the plurality of pressure sensing units on the display panel, the influence of the pressure sensing units on the optical performance of the display panel is small, the problem that the influence of the touch units on the optical performance of the display panel is large in the related art, which results in poor optical performance of the touch display screen, is solved, the influence of the pressure sensing units on the optical performance of the display panel is reduced, and the optical performance of the touch display screen is improved.
According to the contact identification method provided by the embodiment of the invention, the detection precision and the contact identification precision are improved by checking and updating the corresponding relation table of the position coordinates and the induction signals.
The following are examples of modules that may be used to implement embodiments of the methods of the present invention. For details not disclosed in the module embodiments of the present invention, refer to the method embodiments of the present invention.
Referring to fig. 11, which shows a block diagram of a contact identification module 1100 according to an embodiment of the present invention, the contact identification module 1100 may be used to execute the contact identification method according to the embodiment shown in fig. 9 or fig. 10, and referring to fig. 11, the contact identification module 1100 may include, but is not limited to: the touch screen display device comprises a first detection submodule 1101, an inquiry submodule 1102 and a first determination submodule 1103, wherein the first detection submodule 1101 is connected with each pressure sensing unit in a plurality of pressure sensing units of the touch screen display, the first detection submodule 1101 is further connected with the inquiry submodule 1102, the inquiry submodule 1102 is connected with the first determination submodule 1103,
the first detection submodule 1101 is configured to detect a pressure sensing signal through a plurality of pressure sensing units, the touch display screen includes a display panel and a frame, the plurality of pressure sensing units and the frame are all disposed around the display panel, and an orthographic projection of the frame on the display panel covers an orthographic projection of each pressure sensing unit in the plurality of pressure sensing units on the display panel;
the query submodule 1102 is configured to query a correspondence table between the position coordinates and the sensing signals according to the pressure sensing signals detected by the plurality of pressure sensing units to obtain target position coordinates, where the correspondence table between the position coordinates and the sensing signals is used to record the pressure sensing signals detected by the plurality of pressure sensing units when a position point indicated by the position coordinates touches the touch display screen;
a first determining submodule 1103 configured to determine the position point indicated by the target position coordinate as a touch point.
In summary, in the contact identification module provided in the embodiment of the present invention, because the plurality of pressure sensing units of the touch display screen are disposed around the display panel, and the orthographic projection of the frame of the touch display screen on the display panel covers the orthographic projection of each pressure sensing unit of the plurality of pressure sensing units on the display panel, the influence of the pressure sensing units on the optical performance of the display panel is small, the problem that the influence of the touch units on the optical performance of the display panel is large in the related art, which results in poor optical performance of the touch display screen, is solved, the influence of the pressure sensing units on the optical performance of the display panel is reduced, and the optical performance of the touch display screen is improved.
Further, referring to fig. 12, which shows a block diagram of another contact identification module 1100 provided in the embodiment of the present invention, referring to fig. 12, on the basis of fig. 11, the contact identification module 1100 further includes: a second detection submodule 1104, a second determination submodule 1105 and a generation submodule 1106, wherein the second detection submodule 1104 is respectively connected with each of the plurality of pressure sensing units, the second detection submodule 1104 is further connected with the second determination submodule 1105, the second determination submodule 1105 is connected with the generation submodule 1106,
the second detection submodule 1104 is configured to detect, through the plurality of pressure sensing units, a pressure sensing signal generated when pressure is applied to a first position point of the touch display screen;
a second determining submodule 1105 configured to determine the position coordinates of the first position point;
the generating sub-module 1106 is configured to generate a corresponding relationship table between the position coordinates and the sensing signals according to the pressure sensing signals generated when pressure is applied to each position point of the touch display screen and the position coordinates of each position point.
In summary, in the contact identification module provided in the embodiment of the present invention, because the plurality of pressure sensing units of the touch display screen are disposed around the display panel, and the orthographic projection of the frame of the touch display screen on the display panel covers the orthographic projection of each pressure sensing unit of the plurality of pressure sensing units on the display panel, the influence of the pressure sensing units on the optical performance of the display panel is small, the problem that the influence of the touch units on the optical performance of the display panel is large in the related art, which results in poor optical performance of the touch display screen, is solved, the influence of the pressure sensing units on the optical performance of the display panel is reduced, and the optical performance of the touch display screen is improved.
An embodiment of the present invention further provides a touch display device, where the touch display device includes a touch display screen 00 shown in any one of fig. 1 to 7, and a touch identification module 1100 shown in fig. 11 or 12, where the touch display screen 00 is connected to the touch identification module 1100, and specifically, each of a plurality of pressure sensing units of the touch display screen 00 is respectively connected to a first detection submodule and a second detection submodule in the touch identification module 1100. The touch display device can be a smart phone, a tablet computer, a smart car terminal and the like.
In summary, in the touch display device provided in the embodiment of the invention, the plurality of pressure sensing units of the touch display screen are disposed around the display panel, and the orthographic projection of the frame of the touch display screen on the display panel covers the orthographic projection of each pressure sensing unit of the plurality of pressure sensing units on the display panel, so that the pressure sensing units have a smaller influence on the optical performance of the display panel, and the problem that the touch units have a larger influence on the optical performance of the display panel in the related art, which results in poorer optical performance of the touch display screen, is solved, and the effects of reducing the influence of the pressure sensing units on the optical performance of the display panel and improving the optical performance of the touch display screen are achieved.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A touch display screen, comprising: a display panel, a plurality of pressure sensing units, a frame and a back plate,
the pressure sensing units and the frame are arranged around the display panel, each pressure sensing unit in the pressure sensing units is positioned between a light-emitting surface of the display panel and the frame, the orthographic projection of the frame on the display panel covers the orthographic projection of each pressure sensing unit in the pressure sensing units on the display panel, the backboard is arranged on the light-entering side of the display panel, an elastic spacer is arranged between the display panel and the backboard, the orthographic projection of the elastic spacer on the display panel is positioned in the peripheral area of the display panel, and the value range of the height of the elastic spacer is 0.5-10 mm;
the plurality of pressure sensing units are configured to detect pressure sensing signals, so as to query a corresponding relation table of position coordinates and sensing signals according to the pressure sensing signals to obtain target position coordinates, determine position points indicated by the target position coordinates as touch points, wherein the corresponding relation of the position coordinates and the sensing signals is established by a touch point identification module of the touch display screen in a calibration mode, and the corresponding relation table of the position coordinates and the sensing signals is used for recording the pressure sensing signals detected by the plurality of pressure sensing units when the position points indicated by the position coordinates touch the touch display screen.
2. The touch display screen of claim 1, wherein the display panel is an organic light emitting display panel or a liquid crystal display panel,
when the display panel is a liquid crystal display panel, the touch display screen further includes: the display panel is superposed on the backlight module, the frame is arranged around the display panel and the backlight module, and each pressure sensing unit in the pressure sensing units is positioned between the light-emitting surface of the display panel and the frame, or each pressure sensing unit in the pressure sensing units is positioned between the backlight module and the frame.
3. The touch display screen of claim 1, wherein the back panel is fastened to the bezel.
4. Touch display screen according to claim 2,
each pressure sensing unit of the plurality of pressure sensing units is positioned on the display panel; alternatively, the first and second electrodes may be,
each pressure sensing unit in the plurality of pressure sensing units is positioned on the frame; alternatively, the first and second electrodes may be,
each pressure sensing unit in the plurality of pressure sensing units is positioned on the backlight module; alternatively, the first and second electrodes may be,
and part of the pressure sensing units are positioned on the display panel, and part of the pressure sensing units are positioned on the frame.
5. The touch display screen of any one of claims 1 to 4, wherein the plurality of pressure sensing units are uniformly distributed around the display panel.
6. A method of identifying a contact, the method comprising:
the pressure sensing signals are detected by a plurality of pressure sensing units of the touch display screen, the touch display screen comprises a display panel, a frame and a back plate, the plurality of pressure sensing units and the frame are arranged around the display panel, each pressure sensing unit in the plurality of pressure sensing units is positioned between the light-emitting surface of the display panel and the frame, and the orthographic projection of the frame on the display panel covers the orthographic projection of each pressure sensing unit in the plurality of pressure sensing units on the display panel, the back plate is arranged at the light incident side of the display panel, an elastic spacer is arranged between the display panel and the back plate, the orthographic projection of the elastic shock insulator on the display panel is positioned in the peripheral area of the display panel, and the value range of the height of the elastic shock insulator is 0.5-10 mm;
inquiring a corresponding relation table of position coordinates and induction signals according to the pressure induction signals detected by the pressure induction units to obtain target position coordinates, wherein the corresponding relation of the position coordinates and the induction signals is established by a contact identification module of the touch display screen in a calibration mode, and the corresponding relation table of the position coordinates and the induction signals is used for recording the pressure induction signals detected by the pressure induction units when a position point indicated by the position coordinates touches the touch display screen;
and determining the position points indicated by the target position coordinates as contact points.
7. The method according to claim 6, wherein before said querying the corresponding relationship table between the sensing signals and the position coordinates according to the pressure sensing signals detected by the plurality of pressure sensing units, the method further comprises:
detecting pressure induction signals generated when pressure is applied to a first position point of the touch display screen through the plurality of pressure induction units;
determining position coordinates of the first position point;
and generating a corresponding relation table of the position coordinates and the induction signals according to the pressure induction signals generated when pressure is applied to each position point of the touch display screen and the position coordinates of each position point.
8. A contact identification module, characterized in that the contact identification module comprises:
the touch screen comprises a first detection submodule, an inquiry submodule and a first determination submodule, wherein the first detection submodule is respectively connected with each pressure sensing unit of a plurality of pressure sensing units of the touch screen, the first detection submodule is also connected with the inquiry submodule, the inquiry submodule is connected with the first determination submodule,
the first detection submodule is used for detecting pressure sensing signals through the plurality of pressure sensing units, the touch display screen comprises a display panel, a frame and a back plate, the plurality of pressure sensing units and the frame are arranged around the display panel, each pressure sensing unit in the plurality of pressure sensing units is positioned between the light-emitting surface of the display panel and the frame, and the orthographic projection of the frame on the display panel covers the orthographic projection of each pressure sensing unit in the plurality of pressure sensing units on the display panel, the back plate is arranged at the light incident side of the display panel, an elastic spacer is arranged between the display panel and the back plate, the orthographic projection of the elastic shock insulator on the display panel is positioned in the peripheral area of the display panel, and the value range of the height of the elastic shock insulator is 0.5-10 mm;
the query submodule is used for querying a corresponding relation table of position coordinates and sensing signals according to the pressure sensing signals detected by the pressure sensing units to obtain target position coordinates, the corresponding relation of the position coordinates and the sensing signals is established by a contact identification module of the touch display screen in a calibration mode, and the corresponding relation table of the position coordinates and the sensing signals is used for recording the pressure sensing signals detected by the pressure sensing units when a position point indicated by the position coordinates touches the touch display screen;
and the first determining submodule is used for determining the position points indicated by the target position coordinates as contact points.
9. The contact identification module of claim 8, further comprising:
a second detection submodule connected with each of the plurality of pressure sensing units, a second determination submodule connected with the second determination submodule, and a generation submodule,
the second detection submodule is used for detecting a pressure induction signal generated when pressure is applied to a first position point of the touch display screen through the plurality of pressure induction units;
the second determining submodule is used for determining the position coordinates of the first position point;
the generating submodule is used for generating a corresponding relation table of the position coordinates and the induction signals according to the pressure induction signals generated when pressure is applied to all the position points of the touch display screen and the position coordinates of all the position points.
10. A touch display device, comprising: the touch display screen of any one of claims 1 to 5, and the contact identification module of claim 8 or 9, the contact identification module being connected to the touch display screen.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105068602A (en) * | 2015-07-27 | 2015-11-18 | 业成光电（深圳）有限公司 | Electronic device |
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