CN117075757B - Touch screen and display panel - Google Patents
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- CN117075757B CN117075757B CN202311318174.8A CN202311318174A CN117075757B CN 117075757 B CN117075757 B CN 117075757B CN 202311318174 A CN202311318174 A CN 202311318174A CN 117075757 B CN117075757 B CN 117075757B
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- 238000001514 detection method Methods 0.000 claims abstract description 341
- 239000012528 membrane Substances 0.000 claims description 21
- 230000009471 action Effects 0.000 claims description 3
- 229920000767 polyaniline Polymers 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 12
- 230000008859 change Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 230000006870 function Effects 0.000 description 7
- 238000004590 computer program Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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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
- 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
- G06F3/0412—Digitisers structurally integrated in a display
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- Position Input By Displaying (AREA)
Abstract
The application discloses a touch screen and a display panel, wherein the touch screen comprises a display layer and a pressure detection film, the pressure detection film comprises one or more detection areas, the detection areas comprise a plurality of subareas, and the subareas distributed in the same detection area have different thicknesses; wherein the electrical parameters generated by the subregions of different thickness under the same pressure are different. Through the touch screen, the electrical parameters generated by the user pressing the subareas in the detection area can be detected, the thickness of the subareas corresponding to the electrical parameters is determined, and finally the subareas corresponding to the thickness are determined, wherein the subareas are the touch positions. Therefore, the touch screen provided by the application can eliminate the interference of ghost points on the identification touch position, can quickly and accurately identify the touch position, and is suitable for application scenes of multi-point touch.
Description
Technical Field
The invention belongs to the technical field of touch screens, and particularly relates to a touch screen and a display panel.
Background
The self-capacitance touch screen is formed by adding Indium-Tin-Oxide (ITO) films on a glass substrate to form transverse and longitudinal electrode arrays, and self-capacitance is formed between the transverse and longitudinal electrodes and ground. When a human finger touches the self-capacitance touch screen, a coupling capacitance is formed between a human electric field and the self-capacitance touch screen, so that capacitance at a position corresponding to the touch position is increased, and the touch position can be determined by respectively detecting positions of the self-capacitance touch screen where capacitance changes in the transverse direction and the longitudinal direction. However, when a user touches two locations on the self-capacitance touch screen, four location coordinates will be obtained, two of which are erroneous location coordinates, i.e., ghost points. The existence of the ghost points can influence the self-capacitance touch screen to determine the touch position, and is not suitable for the use scene of multi-point touch.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.
Disclosure of Invention
The invention aims to provide a touch screen and a display panel, which are used for solving the problem that the touch screen cannot accurately identify a touch position.
According to an aspect of an embodiment of the present application, there is provided a touch screen including: the display layer is used for displaying the received display information;
the pressure detection film is arranged on one side of the display layer for display, and comprises one or more detection areas, wherein the detection areas comprise a plurality of subareas, and the subareas distributed in the same detection area have different thicknesses; the pressure detection films are used for detecting the touch positions of users on the touch screen.
In another embodiment of the application, the thickness of the sub-region comprises a first thickness and a second thickness, the thickness of the sub-region varying within the range of the first thickness and the second thickness according to a preset rule.
In another embodiment of the present application, the touch screen further includes: a first storage module; the first input end of the first storage module is connected with the output end of the pressure detection film; the first storage module is used for recording detection area information and sub-area information output by the pressure detection film.
In another embodiment of the present application, the touch screen further includes: a first timing control module; the input end of the first timing control module is connected with the output end of the first storage module; the first timing control module is used for reading the detection area information and the sub-area information; determining a target detection area according to the detection area information; determining a target subarea in the target detection area according to the subarea information; the target subarea is a target touch position.
In another embodiment of the present application, the touch screen further includes: the self-capacitance electrode layer is arranged on one side of the pressure detection film; the self-capacitance electrode layer comprises a plurality of position coordinates distributed in an array manner; forming a block by a plurality of areas in the preset position coordinates, wherein the position of the block is overlapped with the position of the detection area in the projection direction; the self-capacitance electrode layer is used for determining the position coordinates to be selected when the user touches.
In another embodiment of the present application, the touch screen further includes: a second storage module; the first input end of the second storage module is connected with the output end of the pressure detection film; the second input end of the second storage module is connected with the output end of the self-capacitance electrode layer; the second storage module is used for recording detection area information and sub-area information output by the pressure detection film and the position coordinates to be selected output from the capacitance electrode layer.
In another embodiment of the present application, the touch screen further includes: a second timing control module; the input end of the second time sequence control module is connected with the output end of the second storage module; the second time sequence control module is used for reading the position coordinates to be selected, the detection area information and the sub-area information; determining a target detection area according to the detection area information; determining a target subarea in the target detection area according to the subarea information; and determining the position overlapping area of the position coordinates to be selected, the target detection area and the target sub-area as the target touch position.
In another embodiment of the present application, the touch screen further includes a row sense line and a column sense line; the pressure detection membrane comprises a first pressure detection membrane and a second pressure detection membrane; the first pressure detection membrane comprises at least one first detection area, and the first detection area comprises a preset number of rows of first sub-areas; the second pressure detection membrane comprises at least one second detection area, and the second detection area comprises a preset number of rows of second sub-areas; the first subareas and the second subareas are arranged in a staggered manner; in the same first detection area, the thicknesses of the first sub-areas of different rows are different; the output end of the first detection area is connected with the row detection line; the line detection line is used for transmitting line detection information generated when a user presses the first pressure detection film; in the same second detection region, the thicknesses of the second sub-regions of different rows are different; the output end of the second detection area is connected with the row detection line; the row detection line is used for transmitting row detection information generated when the user presses the second pressure detection film.
In another embodiment of the present application, the touch screen further includes: a third storage module; the first input end of the third memory module is connected with the row detection line; the second input end of the third memory module is connected with the column detection line; the third memory module is used for recording the row detection information output by the row detection line and the column detection information output by the column detection line.
In another embodiment of the present application, the touch screen further includes: a third timing control module; the input end of the third time sequence control module is connected with the output end of the third storage module; the third time sequence control module is used for reading row detection information and column detection information in the third storage module; determining a target line detection line and a target line sub-region in the target line detection line according to the line detection information; determining a target column detection line and a target column subarea in the target column detection line according to the column detection information; and determining the target touch position according to the target row subarea and the target column subarea.
According to an aspect of an embodiment of the present application, there is provided a display panel including: the touch screen provided by any one embodiment of the application; and the display frame is arranged at the side edge of the touch screen and used for protecting the touch screen.
In the technical scheme of the application, the touch screen comprises a display layer and a pressure detection film, wherein the pressure detection film comprises one or more detection areas, the detection areas comprise a plurality of subareas, and the subareas distributed in the same detection area have different thicknesses; wherein the electrical parameters generated by the subregions of different thickness under the same pressure are different. According to the touch screen provided by the application, the detection area pressed by the user is firstly determined, and as the plurality of subareas in the same detection area have different thicknesses, the electrical parameters generated by the subareas with different thicknesses under the same pressure are different, the electrical parameters generated by the subareas in the detection area pressed by the user can be detected, then the thickness of the subareas corresponding to the electrical parameters is determined, and finally the subareas corresponding to the thickness are determined, wherein the subareas are the touch positions. Therefore, the touch screen provided by the application can eliminate the interference of ghost points on the identification touch position, can quickly and accurately identify the touch position, and is suitable for application scenes of multi-point touch.
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 application as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. It is evident that the drawings in the following description are only some embodiments of the present application and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 schematically illustrates a structural diagram of a pressure detection film in a touch screen according to an embodiment of the application.
Fig. 2 schematically illustrates a structure of a pressure detecting membrane according to a second embodiment of the application.
Fig. 3 schematically illustrates a structural schematic diagram of a touch screen according to a third embodiment of the present application.
Fig. 4 schematically illustrates a structural schematic diagram of a touch screen according to a fourth embodiment of the present application.
Fig. 5 schematically illustrates a structural schematic diagram of a touch screen according to a fifth embodiment of the present application.
Fig. 6 schematically shows a schematic structural diagram of a self-capacitance electrode layer according to a sixth embodiment of the present application.
Fig. 7 schematically illustrates a structure of a pressure detecting membrane according to a seventh embodiment of the application.
Fig. 8 schematically illustrates a flowchart of a control method of a touch screen according to an eighth embodiment of the present application.
FIG. 9 schematically shows a block diagram of a computer system for implementing a touch screen according to an embodiment of the application.
Fig. 10 schematically shows a schematic structural diagram of a display panel according to a ninth embodiment of the present application.
Reference numerals illustrate:
110. a pressure detecting membrane; 111. a first storage module; 112. a first timing control module; 120. a display layer; 130. a self-capacitance electrode layer; 900. a computer system of a touch screen; 901. a processor; 902. a read-only memory; 903. a random access memory; 904. a bus; 905. an input/output interface; 906. an input section; 907. an output section; 908. a storage section; 909. a communication section; 910. a driver; 911. a removable medium; 1000. a display panel; 1010. a touch screen; 1020. and displaying the frame.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art.
As shown in fig. 1, the present application provides a touch screen including a pressure sensing film 110 and a display layer 120 from the outside to the inside. Comprising the following steps: a display layer 120 for displaying the received display information; the pressure detection film 110 is disposed on one side of the display layer 120 for displaying, and the pressure detection film includes one or more detection areas, wherein the detection areas include a plurality of sub-areas, and the plurality of sub-areas distributed in the same detection area have different thicknesses; the pressure detection films are used for detecting the touch positions of users on the touch screen.
Specifically, the pressure detecting film is a film that generates different currents under different pressures, such as a flexible Polyaniline (PANI) pressure detecting film. The pressure detection membrane has high detection sensitivity, the minimum detection pressure limit can reach 0.06pa (corresponding to 60g pressure), and the pressure detection membrane can also respond rapidly to fine touch.
The electrical parameters include electrical related parameters such as current, voltage, capacitance, and resistance.
As shown in fig. 2, the pressure detection membrane includes one or more detection regions, such as detection region X1, detection region X2, detection region X3, and detection region X4. As shown in fig. 3, one detection region includes a plurality of sub-regions, for example, the detection region X1 includes a sub-region X1, a sub-region X2, a … … sub-region X7, and a sub-region X8, and the sub-regions X1, X2, … … sub-region X7, and X8 distributed in the same detection region X1 have different thicknesses; in addition, the electrical parameters generated by the subareas with different thicknesses under the same pressure are different, namely, the currents generated by the subareas x1, the subareas x2, … …, the subareas x7 and the subareas x8 are different under the same pressure, so that the subareas corresponding to the current values can be determined by detecting the current values generated by the pressure detection film when the user presses the screen, and the position touched by the user is determined.
In the technical scheme of the application, the touch screen comprises a display layer and a pressure detection film, wherein the pressure detection film comprises one or more detection areas, the detection areas comprise a plurality of subareas, and the subareas distributed in the same detection area have different thicknesses; wherein the electrical parameters generated by the subregions of different thickness under the same pressure are different. According to the touch screen provided by the application, the detection area pressed by the user is firstly determined, and as the plurality of subareas in the same detection area have different thicknesses, the electrical parameters generated by the subareas with different thicknesses under the same pressure are different, the electrical parameters generated by the subareas in the detection area pressed by the user can be detected, then the thickness of the subareas corresponding to the electrical parameters is determined, and finally the subareas corresponding to the thickness are determined, wherein the subareas are the touch positions. Therefore, the touch screen provided by the application can eliminate the interference of ghost points on the identification touch position, can quickly and accurately identify the touch position, and is suitable for application scenes of multi-point touch.
In other embodiments of the present application, the detection areas on the pressure detection film may have a zigzag structure, where the detection areas are not arranged in an array, and "≡" is one detection area per circle; or the detection area on the pressure detection film is of a honeycomb structure, and each hexagon is a detection area; or the detection area on the pressure detection film is triangular, and is not limited to the shape shown in the drawings of the present application. Similarly, the sub-regions may be one or more of the above shapes, and are not limited to the shapes shown in the drawings of the present application.
In another embodiment of the application, the thickness of the sub-region comprises a first thickness and a second thickness, the thickness of the sub-region varying within the range of the first thickness and the second thickness according to a preset rule.
Specifically, after the first thickness and the second thickness of the subareas are determined, according to the number of the subareas, thickness types matched with the number of the subareas are divided in the interval of the first thickness and the second thickness. While the thickness interval remains the same in order to ensure consistent errors. For example, the total thickness of the pressure detection film is 200nm, the first thickness is 100nm, the second thickness is 200nm, if 20 sub-regions are included in one detection region, the thickness interval is (200-100)/20=5 nm, the film thickness of the sub-region x1 is 100nm, and the film thickness of the sub-region x2 is 105nm. The film thickness of the sub-region x3 was 110nm and that of the … … sub-region x20 was 200nm. It should be appreciated that to increase the accuracy of touch location identification, the number of sub-areas in the detection area may be increased so that the location touched by the user may be accurately identified.
In another embodiment of the present application, the touch screen further includes, as shown in fig. 4: a first storage module 111; a first input end of the first storage module 111 is connected with an output end of the pressure detection film; the first storage module 111 is used for recording the detection area information and the sub-area information output by the pressure detection film.
Specifically, the detection area information is information generated when the detection circuit of the pressure detection film detects that the detection area is touched, and the information includes the position information of the touched detection area, and the detection area information needs to be identified by the first timing control module 112 later, so that the detection area information is stored in the first storage module 111 first. Similarly, the sub-area information is information generated when the detection circuit of the pressure detection film detects that the sub-area is touched, and the information includes the position information of the touched sub-area, and then the sub-area information needs to be identified by the first timing control module 112, so that the sub-area information is stored in the first storage module 111.
In another embodiment of the present application, the touch screen further includes: a first timing control module 112; the input end of the first timing control module 112 is connected with the output end of the first storage module 111; the first timing control module 112 is configured to read the detection region information and the sub-region information; determining a target detection area according to the detection area information; determining a target subarea in the target detection area according to the subarea information; the target subarea is a target touch position.
Specifically, when a certain detection area is touched, the current values of other areas will not change, and the electrical parameters corresponding to the detection area will not change, for example, when the detection area X1 is touched, the current values of other areas will not change, and the current values or voltage values corresponding to the detection area X1 will change, so that it can be determined that the touch occurs in the detection area X1. Similarly, when the user touches the sub-region X6 in the detection region X1, the film thicknesses of the sub-region X6 and other sub-regions are different, and the current values generated during touch are also different, so that the touch position can be determined to be the sub-region X6 by inquiring the film thicknesses corresponding to the current values.
In the multi-touch scene, the detection areas X1, X2, X3 and X4 are detected in real time by the detection circuit of the pressure detection film, when a user touches the sub-area X3 in the detection area X1 and the sub-area X3 in the detection area X2 of the screen, the detection circuit generates detection area information corresponding to the detection area X1 and detection area information corresponding to the detection area X2, and the pressure detection film generates sub-area information corresponding to the sub-area X3 in the detection area X1 and sub-area information corresponding to the sub-area X3 in the detection area X2. And determining that the pressure of the detection area X1 and the pressure of the detection area X2 change according to the detection area information corresponding to the detection area X1 and the detection area information corresponding to the detection area X2. And then obtaining the film thickness corresponding to the sub-region information in the detection region X1 according to the sub-region information of the detection region X1 and the corresponding relation between each sub-region in the detection region X1 and the film thickness, thereby determining that the touch position is the sub-region X3 in the detection region X1 according to the film thickness. In addition, according to the sub-region information of the detection region X2 and the corresponding relation between each sub-region in the detection region X2 and the film thickness, the film thickness corresponding to the sub-region information in the detection region X2 is obtained, so that the touch position is determined to be the sub-region X3 in the detection region X2 according to the film thickness. Therefore, in the multi-touch application scene, all detection areas in the touch screen are not affected, all sub-areas in the same detection area are not affected, and a plurality of touch positions can be accurately identified at the same time.
In another embodiment of the present application, the touch screen further includes: the self-capacitance electrode layer is arranged on one side of the pressure detection film; the self-capacitance electrode layer comprises a plurality of position coordinates distributed in an array manner; forming a block by a plurality of areas in the preset position coordinates, wherein the position of the block is overlapped with the position of the detection area in the projection direction; the self-capacitance electrode layer is used for determining the position coordinates to be selected when the user touches.
Specifically, the self-capacitance electrode layer has an electrode thereon, and a self-capacitance is formed between the electrode and the ground.
As shown in fig. 5, the touch screen includes a self-capacitance electrode layer 130, a pressure detection film 110, and a display layer 120 from the outside to the inside. As shown in fig. 6, for example, (X0, y 0), (X0, y 2), (X4, y 0) and (X4, y 2) on the capacitor electrode layer form a block Z1, the size of the block Z1 is equal to the size of the detection area X1, and the projection of the block Z1 and the projection of the detection area X1 overlap. When a user touches the self-capacitance electrode layer, a coupling capacitance is formed between a human body electric field and the self-capacitance touch screen, so that capacitance at a position corresponding to the touch position is increased, and the touch position can be determined by respectively detecting positions of the self-capacitance electrode layer where capacitance changes in the transverse direction and the longitudinal direction. However, when a user touches two locations on the self-capacitance touch screen, four location coordinates will be obtained, two of which are erroneous location coordinates, i.e., ghost points. The pressure detection film can identify two sub-areas, so that four position coordinates identified by the self-capacitance electrode layer are compared with the two sub-areas identified by the pressure detection film, and the position coordinates with the coincident positions are the positions touched by a user.
In another embodiment of the present application, the touch screen further includes: a second storage module; the first input end of the second storage module is connected with the output end of the pressure detection film; the second input end of the second storage module is connected with the output end of the self-capacitance electrode layer; the second storage module is used for recording detection area information and sub-area information output by the pressure detection film and the position coordinates to be selected output from the capacitance electrode layer.
Specifically, the detection area information is information generated when the detection circuit of the pressure detection film detects that the detection area is touched, the information includes position information of the touched detection area, and the detection area information is required to be identified through the second timing control module later, so that the detection area information is stored in the second storage module first. Similarly, the sub-region information is information generated when the detection circuit of the pressure detection film detects that the sub-region is touched, the information contains the position information of the touched sub-region, and the sub-region information is required to be identified through the second time sequence control module later, so that the sub-region information is stored in the second storage module. The position coordinates to be selected are information generated when the self-capacitance electrode layer detects that the self-capacitance electrode layer is touched; when the user touches only one point of the screen, the position coordinates to be selected are only one, and when the user touches a plurality of points of the screen, the position which is not touched by the user, namely, the ghost point, is contained in the position coordinates to be selected; the position coordinates which are actually touched are needed to be recognized and obtained through the second time sequence control module, so that the position coordinates to be selected are stored in the second storage module.
In another embodiment of the present application, the touch screen further includes: a second timing control module; the input end of the second time sequence control module is connected with the output end of the second storage module; the second time sequence control module is used for reading the position coordinates to be selected, the detection area information and the sub-area information; determining a target detection area according to the detection area information; determining a target subarea in the target detection area according to the subarea information; and determining the position overlapping area of the position coordinates to be selected, the target detection area and the target sub-area as the target touch position.
Specifically, when a certain detection area is touched, the current values of other areas will not change, and the electrical parameters corresponding to the detection area will not change, for example, when the detection area X1 is touched, the current values of other areas will not change, and the current values or voltage values corresponding to the detection area X1 will change, so that it can be determined that the touch occurs in the detection area X1. Similarly, when the user touches the sub-region X6 in the detection region X1, the film thicknesses of the sub-region X6 and other sub-regions are different, and the current values generated during touch are also different, so that the touch position can be determined to be the sub-region X6 by inquiring the film thicknesses corresponding to the current values. In addition, if the user touches a plurality of points, if the position coordinates to be selected are located on different blocks, by comparing the position coordinates to be selected with the target detection areas, for example, the position coordinates to be selected are distributed on the block Z1, the block Z3, the block Z5 and the block Z7, and the target detection area includes the detection area X3 and the detection area X7, the position coordinates on the block Z1 and the block Z5 are ghost points. If the position coordinates to be selected are located on the same block, for example, the position coordinates to be selected include (x 1, y 1), (x 1, y 2), (x 4, y 1) and (x 4, y 2), the target sub-area includes sub-area x4 and sub-area x6, and by comparing the position coordinates to be selected and the target sub-area, the position coordinates to be selected (x 1, y 2) and (x 4, y 1) do not coincide with the target sub-area, and thus the two points are ghost points, (x 1, y 1) and (x 4, y 2) are positions actually touched by the user.
In another embodiment of the present application, the touch screen further includes a row sense line and a column sense line; the pressure detection membrane comprises a first pressure detection membrane and a second pressure detection membrane; the first pressure detection membrane comprises at least one first detection area, and the first detection area comprises a preset number of rows of first sub-areas; the second pressure detection membrane comprises at least one second detection area, and the second detection area comprises a preset number of rows of second sub-areas; the first subareas and the second subareas are arranged in a staggered manner; in the same first detection area, the thicknesses of the first sub-areas of different rows are different; the output end of the first detection area is connected with the row detection line; the line detection line is used for transmitting line detection information generated when a user presses the first pressure detection film; in the same second detection region, the thicknesses of the second sub-regions of different rows are different; the output end of the second detection area is connected with the row detection line; the row detection line is used for transmitting row detection information generated when the user presses the second pressure detection film.
As shown in fig. 7, the first pressure detecting film includes a row detecting line A1 and a column detecting line B1, where the areas of the white squares in fig. 7 belong to the first pressure detecting film, the white squares on the same row detecting line A1 belong to the detecting area A1, one white square indicates one first sub-area, and the thicknesses of the first sub-areas of the A1 row and the first sub-area of the a2 row are different. The area where the black square is located belongs to the second pressure detection film, the black square on the same row of detection lines B1 belongs to the detection area B1, one black square represents one second sub-area, the thicknesses of the B1 row of second sub-areas and the B2 row of second sub-areas are different, for example, 80nm when the thickness of the B1 row of second sub-areas is equal to the thickness of the B2 row of second sub-areas, and the thickness of the B2 row of second sub-areas is 100nm. Meanwhile, the first subarea and the second subarea are distributed in a staggered manner, so that mutual capacitance is formed between rows and columns, and when the screen is touched, the capacitance of the mutual capacitance is reduced, so that the position where the capacitance is reduced is detected, namely the touch position. It should be appreciated that when the capacitance changes, the current or voltage value in the detection circuit changes, so that the touch position can also be detected by detecting the current or voltage value.
According to the embodiment, when the touch position is identified by utilizing the principle of mutual capacitance, the thickness of each row of subareas on each row of detection lines is different, and the thickness of each column of subareas on each column of detection lines is different in the embodiment, so that the row and the column where the touch position is located can be determined by determining the thickness corresponding to the electrical parameter. Therefore, the touch position is determined, the peripheral detection circuit of the touch screen can be simplified, and the production cost of products is reduced.
For example, when the user presses point E in fig. 7, point E corresponds to row a2 in the row detection line A1 and column B3 in the column detection line B1, and thus the current I A1 of the row detection line changes and the current I B1 of the column detection line changes, the row detection information is the current generated when the row a2 sub-area in the row detection line A1 is touched, and the column detection information is the current generated when the column B3 sub-area in the column detection line B1 is touched. It should be appreciated that the currents generated when touching different locations are different due to the different thicknesses of the sub-regions of different rows or columns on the same sense line.
In another embodiment of the present application, the touch screen further includes: a third storage module; the first input end of the third memory module is connected with the row detection line; the second input end of the third memory module is connected with the column detection line; the third memory module is used for recording the row detection information output by the row detection line and the column detection information output by the column detection line.
Specifically, the row detection information includes a row where the touch position detected by the row detection line is located, and the column detection information includes a column where the touch position detected by the column detection line is located. The row detection information and the column detection information need to be identified by the third timing control module, so that the row detection information and the column detection information are stored in the third storage module.
In another embodiment of the present application, the touch screen further includes: a third timing control module; the input end of the third time sequence control module is connected with the output end of the third storage module; the third time sequence control module is used for reading row detection information and column detection information in the third storage module; determining a target line detection line and a target line sub-region in the target line detection line according to the line detection information; determining a target column detection line and a target column subarea in the target column detection line according to the column detection information; and determining the target touch position according to the target row subarea and the target column subarea.
Specifically, the third timing control module can determine the target line detection line A1 by identifying the line detection information, and if the line detection information is a sub-area on the a2 line, a corresponding current value is generated according to the thickness of the a2 line sub-area, so that it can be determined that the user touches the a2 line sub-area in the line detection line A1. In addition, the third timing control module can determine the target column detection line B1 by identifying column detection information, and if the user touches the sub-region on the B3 column, a corresponding current value is generated according to the thickness of the sub-region on the B3 column, so that the user can determine that the user touches the sub-region on the B3 column in the column detection line B1; it can be finally determined that the touch position is a position on the a2 row in the row detection line A1 and the B3 column in the column detection line B1.
As shown in fig. 8, the present application provides a control method of a touch screen, the touch screen including: the display layer is used for displaying the received display information; the pressure detection film is arranged on one side of the display layer for display, and comprises one or more detection areas, wherein the detection areas comprise a plurality of subareas, and the subareas distributed in the same detection area have different thicknesses; the pressure detection film is used for detecting the touch position of a user on the touch screen; the control method includes S810 to S840, specifically as follows:
s810, acquiring an electrical parameter when a user presses the pressure detection film;
s820, identifying a target detection area touched by a user according to the pressure parameter;
S830, determining the target thickness of the subarea corresponding to the electrical parameter according to the corresponding relation between the electrical parameter and the thickness of the subarea;
and S840, determining a target subarea corresponding to the target thickness from the target detection area as a target touch position according to the target thickness.
Specific details of the touch screen control method provided by the application are described in the corresponding product embodiments, and are not repeated here.
FIG. 9 schematically shows a block diagram of a computer system for implementing a touch screen according to an embodiment of the application.
It should be noted that, the computer system 900 of the touch screen shown in fig. 9 is only an example, and should not impose any limitation on the functions and the application scope of the embodiments of the present application.
As shown in fig. 9, the computer system 900 includes a processor 901, and the processor 901 may be CPU (Central Processing Unit) or MCU (Microcontroller Unit), and the processor 901 may perform various appropriate actions and processes according to a program stored in a Read-Only Memory 902 (ROM) or a program loaded from a storage portion 908 into a random access Memory 903 (Random Access Memory, RAM). In the random access memory 903, various programs and data required for system operation are also stored. The processor 901, the rom 902, and the ram 903 are connected to each other via a bus 904. An Input/Output interface 905 (i.e., an I/O interface) is also connected to bus 904.
The following components are connected to the input/output interface 905: an input section 906 including a keyboard, a mouse, and the like; an output portion 907 including a speaker and the like, such as a Cathode Ray Tube (CRT), a Liquid crystal display (Liquid CRYSTAL DISPLAY, LCD), and the like; a storage portion 908 including a hard disk or the like; and a communication section 909 including a network interface card such as a local area network card, a modem, or the like. The communication section 909 performs communication processing via a network such as the internet. The drive 910 is also connected to the input/output interface 905 as needed. A removable medium 911 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is installed as needed on the drive 910 so that a computer program read out therefrom is installed into the storage section 908 as needed.
In particular, the processes described in the various method flowcharts may be implemented as computer software programs according to embodiments of the application. For example, embodiments of the present application include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method shown in the flowcharts. In such an embodiment, the computer program may be downloaded and installed from the network via the communication portion 909 and/or installed from the removable medium 911. When being executed by the processor 901, performs various functions defined in the system of the present application.
It should be noted that, the computer readable medium shown in the embodiments of the present application may be a computer readable signal medium or a computer readable storage medium, or any combination of the two. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-Only Memory (ROM), an erasable programmable read-Only Memory (Erasable Programmable Read Only Memory, EPROM), a flash Memory, an optical fiber, a portable compact disc read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In the present application, however, the computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, with the computer-readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the foregoing.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
It should be noted that although in the above detailed description several modules or units of a device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functions of two or more modules or units described above may be embodied in one module or unit in accordance with embodiments of the application. Conversely, the features and functions of one module or unit described above may be further divided into a plurality of modules or units to be embodied.
From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present application may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, and includes several instructions to cause a computing device (may be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the embodiments according to the present application.
As shown in fig. 10, in another embodiment of the present application, there is provided a display panel 1000 including: the touch screen 1010 provided by any one of the embodiments of the present application; and a display frame 1020 disposed at a side edge of the touch screen 1010 for protecting the touch screen 1010.
Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains.
It is to be understood that the application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (9)
1. A touch screen, comprising:
the display layer is used for displaying the received display information;
A row detection line and a column detection line;
The pressure detection film is arranged on one side of the display layer for display, the pressure detection film comprises one or more detection areas, the detection areas comprise a plurality of subareas, and the subareas distributed in the same detection area have different thicknesses;
Or the pressure detection membrane comprises a first pressure detection membrane and a second pressure detection membrane; the first pressure detection membrane comprises at least one first detection area, and the first detection area comprises a preset number of rows of first sub-areas; the second pressure detection membrane comprises at least one second detection area, and the second detection area comprises a preset number of rows of second sub-areas; the first subareas and the second subareas are arranged in a staggered manner; in the same first detection area, the thicknesses of the first sub-areas of different rows are different; the output end of the first detection area is connected with the row detection line; the line detection line is used for transmitting line detection information generated when a user presses the first pressure detection film; in the same second detection area, the thicknesses of the second sub-areas of different rows are different; the output end of the second detection area is connected with the row detection line; the row detection line is used for transmitting row detection information generated when a user presses the second pressure detection film;
The pressure detection film is used for acquiring detection current generated when a user presses the pressure detection film; identifying a target detection area touched by a user according to the detection current; determining the target thickness of the subarea corresponding to the detection current according to the corresponding relation between the detection current and the thickness of the subarea; determining a target subarea corresponding to the target thickness from the target detection area according to the target thickness, and taking the target subarea as a target touch position; the pressure detection film is a flexible polyaniline pressure detection film which generates different currents under the action of different pressures;
The self-capacitance electrode layer is arranged on one side of the pressure detection film; the self-capacitance electrode layer comprises a plurality of position coordinates distributed in an array manner; forming a block by a plurality of areas in preset position coordinates, wherein the position of the block is overlapped with the position of the detection area in the projection direction; the self-capacitance electrode layer is used for determining the position coordinates to be selected when a user touches the self-capacitance electrode layer;
The touch screen is used for comparing the position coordinate to be selected with the target sub-region to obtain a position coordinate corresponding to the target sub-region, and taking the position coordinate corresponding to the target sub-region as the coordinate of the touch position of the user.
2. The touch screen of claim 1, wherein the thickness of the sub-region comprises a first thickness and a second thickness, the thickness of the sub-region varying within a range of the first thickness and the second thickness according to a preset rule.
3. The touch screen of claim 1, further comprising: a first storage module; the first input end of the first storage module is connected with the output end of the pressure detection film;
the first storage module is used for recording detection area information and sub-area information output by the pressure detection film.
4. The touch screen of claim 3, further comprising: a first timing control module; the input end of the first timing control module is connected with the output end of the first storage module;
The first timing control module is used for reading the detection area information and the sub-area information; determining a target detection area according to the detection area information; determining a target subarea in the target detection area according to the subarea information; the target subarea is a target touch position.
5. The touch screen of claim 1, further comprising: a second storage module; the first input end of the second storage module is connected with the output end of the pressure detection film; the second input end of the second storage module is connected with the output end of the self-capacitance electrode layer;
The second storage module is used for recording detection area information and sub-area information output by the pressure detection film and the position coordinates to be selected output by the self-capacitance electrode layer.
6. The touch screen of claim 5, further comprising: a second timing control module; the input end of the second time sequence control module is connected with the output end of the second storage module;
The second time sequence control module is used for reading the position coordinates to be selected, the detection area information and the sub-area information; determining a target detection area according to the detection area information; determining a target subarea in the target detection area according to the subarea information; and determining the position overlapping area of the position coordinates to be selected, the target detection area and the target sub-area as a target touch position.
7. The touch screen of claim 1, further comprising: a third storage module; the first input end of the third storage module is connected with the row detection line; the second input end of the third storage module is connected with the column detection line;
The third storage module is used for recording row detection information output by the row detection line and column detection information output by the column detection line.
8. The touch screen of claim 7, further comprising: a third timing control module; the input end of the third time sequence control module is connected with the output end of the third storage module;
the third timing control module is used for reading the row detection information and the column detection information in the third storage module; determining a target line detection line and a target line sub-region in the target line detection line according to the line detection information; determining a target column detection line and a target column subarea in the target column detection line according to the column detection information; and determining a target touch position according to the target row subarea and the target column subarea.
9. A display panel, comprising: a touch screen as claimed in any one of claims 1 to 8;
The display frame is arranged on the side edge of the touch screen and used for protecting the touch screen.
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| CN108205397A (en) * | 2016-12-20 | 2018-06-26 | 意法半导体亚太私人有限公司 | Force snesor dot pattern |
| JP2022114656A (en) * | 2021-01-27 | 2022-08-08 | サクサ株式会社 | Pressure sensor and position detection device |
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| JP6773528B2 (en) * | 2016-11-15 | 2020-10-21 | 株式会社ジャパンディスプレイ | Pressure-sensitive sensor and display device with pressure-sensitive sensor |
| KR102648766B1 (en) * | 2017-11-20 | 2024-03-20 | 삼성디스플레이 주식회사 | Pressure sensor, manufacturing method of the same, and display device having the same |
| KR102502225B1 (en) * | 2018-11-09 | 2023-02-21 | 삼성디스플레이 주식회사 | Display device and method for manufacturing display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108205397A (en) * | 2016-12-20 | 2018-06-26 | 意法半导体亚太私人有限公司 | Force snesor dot pattern |
| JP2022114656A (en) * | 2021-01-27 | 2022-08-08 | サクサ株式会社 | Pressure sensor and position detection device |
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