CN106855757B - Liquid crystal display screen, pressure measurement method and device - Google Patents

Liquid crystal display screen, pressure measurement method and device Download PDF

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Publication number
CN106855757B
CN106855757B CN201510906900.7A CN201510906900A CN106855757B CN 106855757 B CN106855757 B CN 106855757B CN 201510906900 A CN201510906900 A CN 201510906900A CN 106855757 B CN106855757 B CN 106855757B
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value
capacitor
spacer
liquid crystal
final capacitance
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CN106855757A (en
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李国盛
刘安昱
顾凌华
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Xiaomi Inc
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Xiaomi Inc
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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
    • 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
    • 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
    • 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate

Abstract

The disclosure relates to a liquid crystal display screen, a pressure measurement method and a pressure measurement device, which belong to the technical field of display and comprise the following steps: the display panel and the touch panel are respectively and electrically connected with the control chip; the display panel comprises a lower substrate, an upper substrate arranged in parallel relative to the lower substrate, and a liquid crystal layer sealed in a cavity formed by the upper substrate and the lower substrate, wherein the cavity also comprises a raised spacer array; the capacitance value of the capacitor is increased when the capacitor is in a working state and the spacer corresponding to the capacitor is pressed down; the capacitance value of the capacitor remains unchanged when the capacitor is in an operating state and the spacer corresponding to the capacitor is not pressed. The liquid crystal display screen structure can achieve the effect of simplifying the structure of the liquid crystal display screen.

Description

Liquid crystal display screen, pressure measurement method and device
Technical Field
The disclosure relates to the technical field of display, in particular to a liquid crystal display screen, and a pressure measurement method and device.
Background
With the development of liquid crystal display technology, liquid crystal display has more and more functions, such as pressure measurement function.
The related art provides a liquid crystal display, and this liquid crystal display includes display panel, touch panel and the pressure membrane material that contains pressure sensor that links to each other with control chip electrical property respectively, and the lower surface of pressure membrane material and touch panel's upper surface laminating, touch panel's lower surface and display panel's upper surface laminating. When a user operates the liquid crystal display screen, the pressure membrane material can acquire the pressure value of the operation liquid crystal display screen and send the pressure value to the control chip, the touch panel can acquire the operation position of the user and send the operation position to the control chip, and the control chip processes the received pressure value and the operation position and controls the display panel to display related contents according to a processing result.
Disclosure of Invention
In order to solve the problem that the structure of the liquid crystal display screen is complex due to the fact that the pressure value is measured by setting the pressure film material, the liquid crystal display screen, the pressure measuring method and the pressure measuring device are provided.
According to a first aspect of the embodiments of the present disclosure, there is provided a liquid crystal display panel including: the display panel and the touch panel are respectively and electrically connected with the control chip, and the upper surface of the display panel is attached to the lower surface of the touch panel;
the display panel comprises a lower substrate, an upper substrate arranged in parallel relative to the lower substrate, and a liquid crystal layer sealed in a cavity formed by the upper substrate and the lower substrate;
the cavity also comprises a raised spacer array, the spacer array is formed on at least one of the lower surface of the upper substrate and the upper surface of the lower substrate, the spacer array and the opposite substrate form n capacitors, each capacitor corresponds to one spacer, the substrate is at least one of the upper substrate and the lower substrate, and n is a positive integer;
the capacitance value of the capacitor is increased when the capacitor is in a working state and the spacer corresponding to the capacitor is pressed down;
the capacitance value of the capacitor remains unchanged when the capacitor is in an operating state and the spacer corresponding to the capacitor is not pressed.
Optionally, when the spacer is formed on the lower surface of the upper substrate as one electrode of the capacitor, the other electrode of the capacitor is a conductive pattern disposed on the upper surface of the lower substrate; alternatively, the first and second electrodes may be,
when the spacer is formed on the upper surface of the lower substrate as one electrode of the capacitor, the other electrode of the capacitor is a conductive pattern disposed on the lower surface of the upper substrate.
Alternatively, the spacer is made of a conductive material, or the surface of the spacer is coated with a conductive material.
Optionally, the liquid crystal display screen further comprises a control chip;
each capacitor is electrically connected to the control chip through a corresponding enable line, and each capacitor is electrically connected with the data line through a switch.
Optionally, when the control chip controls the switch of the capacitor to be in the first state through the enable line, the capacitor is in the working state;
when the control chip controls the switch of the capacitor to be in the second state through the enable line, the capacitor is in the dormant state.
Optionally, two rows of spacers distributed over adjacent capacitors are adjacent or spaced apart by a predetermined row; alternatively, the first and second electrodes may be,
two columns of spacers distributed over adjacent capacitors are adjacent or spaced apart by a predetermined column.
Optionally, the number of capacitors per unit area is greater than a predetermined threshold.
According to a second aspect of the embodiments of the present disclosure, there is provided a pressure measurement method for use in the liquid crystal display panel as in the first aspect, including:
when there is a pressing operation acting on the liquid crystal display screen, screening out a final capacitance value exceeding a preset threshold value from the final capacitance values of the capacitors in the working state, wherein the preset threshold value is a capacitance value which is kept when the spacer corresponding to the capacitor is not pressed down, and the final capacitance value is a capacitance value which is increased when the spacer corresponding to the capacitor is pressed down;
and determining the pressure value of the pressing operation according to the final capacitance value.
Optionally, the method further includes:
the capacitor is controlled to be electrically connected with the corresponding data line through an enabling line;
and outputting the capacitance value of the capacitor through the data line.
Optionally, determining the pressure value of the pressing operation according to the maximum capacitance value includes:
when a final capacitance value exists, searching a first numerical value corresponding to the final capacitance value in a preset first corresponding relation, and determining the first numerical value as a pressure value of the pressing operation; alternatively, the first and second electrodes may be,
when at least two final capacitance values exist, calculating the average value of the at least two final capacitance values, searching a second numerical value corresponding to the average value in a preset second corresponding relation, and determining the second numerical value as the pressure value of the pressing operation; alternatively, the first and second electrodes may be,
when at least two final capacitance values exist, determining the maximum value of the at least two final capacitance values, searching a third numerical value corresponding to the maximum value in a preset third corresponding relation, and determining the third numerical value as a pressure value of the pressing operation; alternatively, the first and second electrodes may be,
and when at least two final capacitance values exist, calculating the density of the final capacitance values in a unit area according to the number of the final capacitance values, searching a fourth numerical value corresponding to the density in a preset fourth corresponding relation, and determining the fourth numerical value as the pressure value of the pressing operation.
According to a third aspect of the embodiments of the present disclosure, there is provided a pressure measurement device used in the liquid crystal display panel as in the first aspect, including:
a screening module configured to screen out a final capacitance value exceeding a preset threshold value, which is a capacitance value that is held when a spacer corresponding to a capacitor is not pressed, from among final capacitance values of respective capacitors in an operating state when there is a pressing operation acting on the liquid crystal display screen, the final capacitance value being a capacitance value that becomes larger when the spacer corresponding to the capacitor is pressed;
a determination module configured to determine a pressure value of the pressing operation according to the final capacitance value screened out by the screening module.
Optionally, the apparatus further includes:
the control module is configured to control the capacitor to be electrically connected with the corresponding data line through the enable line;
and the output module is configured to output the capacitance value of the capacitor through the data line.
Optionally, the determining module includes:
a first determining sub-module configured to, when there is a final capacitance value, search a first value corresponding to the final capacitance value in a preset first correspondence relationship, and determine the first value as a pressure value of the pressing operation;
a second determining sub-module configured to calculate an average value of the at least two final capacitance values when there are at least two final capacitance values, search a second numerical value corresponding to the average value in a preset second correspondence, and determine the second numerical value as a pressure value of the pressing operation;
a third determining sub-module configured to determine a maximum value of the at least two final capacitance values when the at least two final capacitance values exist, search a third numerical value corresponding to the maximum value in a preset third correspondence, and determine the third numerical value as a pressure value of the pressing operation;
and the fourth determining submodule is configured to calculate the density of the final capacitance value in the unit area according to the number of the final capacitance values when at least two final capacitance values exist, search a fourth numerical value corresponding to the density in a preset fourth corresponding relation, and determine the fourth numerical value as the pressure value of the pressing operation.
According to a fourth aspect of the embodiments of the present disclosure, there is provided a pressure measurement device including:
a liquid crystal display panel as in the first aspect;
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
when there is a pressing operation acting on the liquid crystal display screen, screening out a final capacitance value exceeding a preset threshold value from the final capacitance values of the capacitors in the working state, wherein the preset threshold value is a capacitance value which is kept when the spacer corresponding to the capacitor is not pressed down, and the final capacitance value is a capacitance value which is increased when the spacer corresponding to the capacitor is pressed down;
and determining the pressure value of the pressing operation according to the final capacitance value.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
n capacitors are formed with the opposite substrate by the spacer array on at least one of the lower surface of the upper substrate and the upper surface of the lower substrate, and each capacitor corresponds to one spacer; the capacitance value of the capacitor is increased when the capacitor is in a working state and the spacer corresponding to the capacitor is pressed down, and the capacitance value of the capacitor is kept unchanged when the capacitor is in the working state and the spacer corresponding to the capacitor is not pressed down; the pressure value can be confirmed according to the capacitance value of grow, has solved and has measured the pressure value through setting up the pressure membrane material, leads to the problem that liquid crystal display's structure is complicated, has reached the effect of simplifying liquid crystal display's structure.
In addition, the pressure value of the pressing operation is determined through four pressure value determining modes, and the effect of improving the accuracy of the pressure value determination can be achieved.
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 disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic diagram of a liquid crystal display panel according to an exemplary embodiment.
Fig. 2A is a schematic diagram illustrating the location of one type of spacer and conductive pattern, according to an example embodiment.
Fig. 2B is a schematic diagram illustrating facing regions of spacers and conductive patterns according to an example embodiment.
FIG. 2C is a schematic diagram illustrating one manner of capacitive coupling, according to an example embodiment.
Fig. 2D is a schematic diagram illustrating a first distribution of capacitance, according to an example embodiment.
Fig. 2E is a diagram illustrating a second distribution of capacitance according to an example embodiment.
FIG. 3 is a flow chart illustrating a method of pressure measurement according to an exemplary embodiment.
FIG. 4 is a flow chart illustrating a method of pressure measurement according to another exemplary embodiment.
FIG. 5 is a block diagram illustrating a pressure measurement device according to an exemplary embodiment.
FIG. 6 is a block diagram illustrating a pressure measurement device according to an exemplary embodiment.
FIG. 7 is a block diagram illustrating an apparatus for pressure measurement according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Fig. 1 is a schematic diagram illustrating a liquid crystal display panel according to an exemplary embodiment, the liquid crystal display panel 100 including: a display panel 120 and a touch panel 130 electrically connected to the control chip 110, respectively, wherein an upper surface of the display panel 120 is attached to a lower surface of the touch panel 130;
the display panel 120 includes a lower substrate 121, an upper substrate 122 disposed in parallel with the lower substrate 121, and a liquid crystal layer 123 sealed in a cavity formed by the upper substrate 122 and the lower substrate 121, the cavity further includes a convex spacer array 124, the spacer array 124 is formed on at least one of a lower surface of the upper substrate 122 and an upper surface of the lower substrate 121, the spacer array 124 and the opposite substrate form n capacitors 125, each capacitor 125 corresponds to one spacer, the substrate is at least one of the upper substrate 122 and the lower substrate 121, and n is a positive integer;
the capacitance value of the capacitor 125 becomes larger when the capacitor 125 is in an operating state and a spacer corresponding to the capacitor 125 is pressed;
the capacitance value of the capacitor 125 remains unchanged when the capacitor 125 is in an operating state and the spacer corresponding to the capacitor 125 is not pressed.
In summary, in the liquid crystal display panel provided by the present disclosure, n capacitors are formed with the opposite substrate by the spacer array on at least one of the lower surface of the upper substrate and the upper surface of the lower substrate, and each capacitor corresponds to one spacer; the capacitance value of the capacitor is increased when the capacitor is in a working state and the spacer corresponding to the capacitor is pressed down, and the capacitance value of the capacitor is kept unchanged when the capacitor is in the working state and the spacer corresponding to the capacitor is not pressed down; the pressure value can be confirmed according to the capacitance value of grow, has solved and has measured the pressure value through setting up the pressure membrane material, leads to the problem that liquid crystal display's structure is complicated, has reached the effect of simplifying liquid crystal display's structure.
As shown in fig. 1, a liquid crystal display panel 100 according to another exemplary embodiment includes: the display panel 120 and the touch panel 130 are electrically connected to the control chip 110, respectively, and an upper surface of the display panel 120 is attached to a lower surface of the touch panel 130.
The touch panel 130 may receive a pressing operation triggered by a user on the touch panel 130, and send operation information of the pressing operation to the control chip 110, and after the control chip 110 processes the operation information, the control panel 120 is controlled to display related content.
The display panel 120 includes a lower substrate 121, an upper substrate 122 disposed in parallel with the lower substrate 121, and a liquid crystal layer 123 enclosed in a cavity formed by the upper substrate 122 and the lower substrate 121, and a convex spacer array 124 is further included in the cavity, and the spacer array 124 is formed on at least one of a lower surface of the upper substrate 122 and an upper surface of the lower substrate 121.
In one possible implementation, the lower substrate 121 may be a TFT (Thin Film Transistor) substrate, the upper substrate 122 may be a CF (Color Filter) substrate, and the embodiment does not limit the upper substrate 122 and the lower substrate 121.
In this embodiment, since a cavity for enclosing the liquid crystal layer 123 needs to be formed between the lower substrate 121 and the upper substrate 122, the cavity needs to be formed by supporting the lower substrate 121 and the upper substrate 122 by a spacer (spacer) array 125. Wherein the spacer array 124 may be entirely formed on the upper surface of the lower substrate 121; or may be formed entirely on the lower surface of the upper substrate 122; and may be partially formed on the upper surface of the lower substrate 121 and partially formed on the lower surface of the upper substrate 122.
When the spacer array 124 is partially formed on the upper surface of the lower substrate 121 and partially formed on the lower surface of the upper substrate 122, the spacer array formed on the upper surface of the lower substrate 121 may be opposite to or staggered from the spacer array formed on the lower surface of the upper substrate 122, which is not limited in this embodiment.
It should be noted that, since the cavity is used to enclose the liquid crystal layer 123, the distribution of the spacers in the spacer array 124 cannot affect the turning of the liquid crystal under voltage control, so as to ensure the display effect.
The spacer array 124 and the opposite substrate form n capacitors 125, and each capacitor 125 corresponds to one spacer, the substrate is at least one of the upper substrate 122 and the lower substrate 121, and n is a positive integer. Wherein each capacitor 125 is formed by one spacer and one conductive pattern. That is, one pole of each capacitor 125 is a spacer and the other pole is a conductive pattern.
The number of capacitors 125 is equal to or less than the number of spacers. That is, only a portion of the spacers in the spacer array 124 form the capacitor 125, or all of the spacers in the spacer array 124 form the capacitor 125, which is not limited in this embodiment.
Wherein, when the spacer is formed as one pole of the capacitor 125 on the lower surface of the upper substrate 122, the other pole of the capacitor is a conductive pattern disposed on the upper surface of the lower substrate 121; alternatively, when the spacer is formed on the upper surface of the lower substrate 121 as one pole of the capacitor 125, the other pole of the capacitor 125 is a conductive pattern disposed on the lower surface of the upper substrate 122, wherein the conductive pattern may be a pattern etched on the upper substrate 122 or the lower substrate 121, and the embodiment does not limit the pattern of the conductive pattern.
As one pole of the capacitor 125, the spacers in the spacer array 124 are made of a conductive material, or alternatively, the surfaces of the spacers are coated with a conductive material.
Referring to the position schematic diagram of the spacers and the conductive patterns shown in fig. 2A, the spacer array 124 is used as one pole of the capacitor 125 formed on the lower surface of the upper substrate 122, and the other pole of the capacitor 125 is illustrated as a row of conductive patterns disposed on the upper surface of the lower substrate 121, and it is assumed that the conductive patterns are rectangular.
Since the upper surface of the display panel 120 is attached to the lower surface of the touch panel 130, when the pressing operation is applied to the touch panel 130, the upper substrate 122 in the display panel 120 is pressed, so that the distance between the spacer and the conductive pattern is reduced, and at this time, according to the capacitance value calculation formula:
C∝ε*S/d
where C is the capacitance, ε is the dielectric constant, S is the area directly between the two poles of capacitor 125, and d is the distance between the two poles of the capacitor.
As can be seen from the above formula, when the distance d between the two capacitors is decreased, the capacitance C is increased; when d is unchanged, C is unchanged.
Wherein the facing area between the two poles of the capacitor 125 is the area of the facing region, which is the region where the conductive portion of the spacer is vertically projected onto the conductive pattern, and the smaller region of the conductive pattern itself.
Referring to fig. 2B, the opposite regions of the spacers and the conductive patterns are schematically illustrated, wherein, taking as an example that the spacer array 124 is disposed on the lower surface of the upper substrate 122, the conductive patterns are disposed on the upper surface of the lower substrate 121, and the lower surface of each spacer is coated with a conductive material, as shown in fig. 2B, the lower surface of the spacer is vertically projected onto the conductive pattern to form a region 1, and the region 1 is smaller than the region 2 of the conductive pattern itself, so that the opposite region of the spacer and the conductive pattern is the region 1, and the opposite area is the area of the region 1.
In the circuit implementation, each capacitor 125 may be electrically connected to the control chip 110 through a corresponding enable line, and each capacitor 125 is electrically connected to the data line through a switch. The control chip 110 may control the state of the switch corresponding to the capacitor 125 through the enable line. The first state is a closed state, and the second state is an open state.
When the control chip 110 controls the switch of the capacitor 125 to be in a closed state through the enable line, at this time, the capacitor 125 is in a working state, and the capacitor 125 in the working state outputs a capacitance value through the data line; when the control chip 110 controls the switch of the capacitor 125 to be in an off state through the enable line, at this time, the capacitor 125 is in a sleep state, and the capacitor 125 in the sleep state does not output a capacitance value through the data line.
In this embodiment, one data line may be provided for each capacitor 125, or one data line may be provided for a plurality of capacitors 125, which is not limited in this embodiment.
Referring to the schematic diagram of the capacitor connection manner shown in fig. 2C, a data line is set for a combination of a row of capacitors 125, as shown in fig. 2C, a horizontal line represents an enable line, a vertical line represents a data line, each rectangle represents a capacitor 125, each capacitor 125 is electrically connected to the control chip 110 through a corresponding enable line, and each capacitor 125 is electrically connected to the data line through a switch.
The control chip 110 controls the switches of the capacitors 125 in the second row to be in a first state, that is, the capacitors 125 in the second row are in a working state, and at this time, the capacitors 125 in the second row are output by the longitudinally distributed data lines; the switches controlling the capacitors 125 of the first and third rows are in a second state, i.e. a sleep state, where the capacitors 125 of the first and third rows do not output a capacitance value.
It can be seen that the capacitance value of the capacitor 125 becomes larger when the capacitor 125 is in the working state and the spacer corresponding to the capacitor 125 is pressed; the capacitor 125 remains unchanged when it is in the active state and the spacer corresponding to the capacitor 125 is not pressed.
The two poles of the capacitor are formed by the spacer array and the conductive patterns on the opposite substrate of the substrate, and the n capacitors 125 are included in the cavity, so that the n capacitors 125 are required to be uniformly distributed in the cavity, the number of the capacitors 125 in a unit area is larger than a preset threshold value, and a pressure value of pressing operation can be measured when a user presses any position on the liquid crystal display screen 100. The predetermined threshold may be an empirical value or a numerical value obtained by calculation, and the embodiment is not limited.
This embodiment provides two ways of uniformly distributing n capacitors 125 in the cavity, and the implementation is as follows:
in a first implementation, the spacer array 124 includes i rows of spacers, n capacitors 125 are distributed within the cavity and each capacitor 125 is distributed under a row of spacers, i is a positive integer and i ≧ n. At this time, two rows of spacers distributed over the adjacent capacitors 125 are adjacent or spaced apart by a predetermined row.
Wherein the predetermined row may be a fixed row, for example, the spacers distributed over the first capacitor 125 are spaced from the spacers distributed over the second capacitor 125 by 2 rows, and the spacers distributed over the second capacitor 125 are spaced from the spacers distributed over the third capacitor 125 by 2 rows; alternatively, the rows may be non-fixed rows, for example, the spacers distributed over the first capacitor 125 are separated from the spacers distributed over the second capacitor 125 by 2 rows, and the spacers distributed over the second capacitor 125 are separated from the spacers distributed over the third capacitor 125 by 4 rows, which is not limited in this embodiment.
For convenience of illustration, in the present embodiment, the distribution of at least two capacitors 125 is illustrated, please refer to the first distribution diagram of the capacitors shown in fig. 2D, where a dashed box in fig. 2D represents a mapping surface of the spacers, two rows of spacers distributed on the adjacent capacitors 125 in the left diagram of fig. 2D are adjacent, two rows of spacers distributed on the adjacent capacitors 125 in the right diagram of fig. 2D are separated by a predetermined row, and it is assumed that the predetermined row is 1 row.
In a second implementation, the spacer array 124 includes j columns of spacers, n capacitors 124 are distributed within the cavity and each capacitor 125 is distributed under one column of spacers, j is a positive integer and j ≧ n. At this time, two columns of spacers distributed over the adjacent capacitors 125 are adjacent or spaced apart by a predetermined column.
The predetermined columns may be fixed columns or non-fixed columns, and specific contents refer to the above description, which is not described herein again.
For convenience of illustration, the present embodiment illustrates the distribution of at least two capacitors 125, please refer to the second distribution diagram of the capacitors shown in fig. 2E, where a dashed box in fig. 2E represents a mapping surface of the spacers, two columns of spacers distributed on the adjacent capacitors 125 in the left diagram of fig. 2E are adjacent, two columns of spacers distributed on the adjacent capacitors 125 in the right diagram of fig. 2E are separated by a predetermined column, and it is assumed that the predetermined column is 1 column.
In summary, in the liquid crystal display panel provided by the present disclosure, n capacitors are formed with the opposite substrate by the spacer array on at least one of the lower surface of the upper substrate and the upper surface of the lower substrate, and each capacitor corresponds to one spacer; the capacitance value of the capacitor is increased when the capacitor is in a working state and the spacer corresponding to the capacitor is pressed down, and the capacitance value of the capacitor is kept unchanged when the capacitor is in the working state and the spacer corresponding to the capacitor is not pressed down; the pressure value can be confirmed according to the capacitance value of grow, has solved and has measured the pressure value through setting up the pressure membrane material, leads to the problem that liquid crystal display's structure is complicated, has reached the effect of simplifying liquid crystal display's structure.
Fig. 3 is a flowchart illustrating a pressure measuring method applied to a liquid crystal display panel shown in fig. 1 according to an exemplary embodiment, the pressure measuring method including the following steps, as shown in fig. 3.
In step 301, when there is a pressing operation applied to the liquid crystal display panel, a final capacitance value exceeding a preset threshold value, which is a capacitance value held when the spacer corresponding to the capacitor is not pressed, is selected from the final capacitance values of the capacitors in the respective operation states, and the final capacitance value becomes larger when the spacer corresponding to the capacitor is pressed.
In step 302, a pressure value of the pressing operation is determined according to the final capacitance value.
In summary, in the pressure measurement method provided by the present disclosure, a final capacitance value exceeding a preset threshold is screened out from final capacitance values of the capacitors in the working state, where the preset threshold is a capacitance value that is maintained when the spacer corresponding to the capacitor is not pressed, and the final capacitance value is a capacitance value that increases when the spacer corresponding to the capacitor is pressed; confirm the pressure value of pressing the operation according to final capacitance value, because the user triggers on liquid crystal display when pressing the operation, the spacer can be pressed, the distance between the electric capacity two poles of the earth diminishes this moment, the capacitance value grow, and the pressure value is positive correlation with the final capacitance value of the electric capacity that is in operating condition, therefore, can confirm the pressure value according to the final capacitance value of the electric capacity that is in operating condition, the pressure value is measured through setting up the pressure membrane material to the solution, lead to liquid crystal display's the problem that the structure is complicated, the effect of simplifying liquid crystal display's structure has been reached.
Fig. 4 is a flowchart illustrating a pressure measuring method applied to a liquid crystal display panel shown in fig. 1 according to another exemplary embodiment, the pressure measuring method including the following steps, as shown in fig. 4.
In step 401, controlling the capacitor to be electrically connected with the corresponding data line through an enable line; and outputting the capacitance value of the capacitor through the data line.
The control chip realizes line-by-line scanning of pixels in the display panel by controlling the enable line. When a certain row of pixels is scanned, the corresponding capacitors in the pixels of the row are in a working state, at the moment, each capacitor in the working state is electrically connected with the data line through a switch, and the capacitance value of the capacitor is output through the data line; the capacitance corresponding to the pixel row which is not scanned is in a sleep state.
Referring to fig. 2C, in fig. 2C, the second row of pixels is scanned, the capacitors corresponding to the second row of pixels are in a working state, and the capacitance values of the second row of pixels are output through the data lines distributed longitudinally; the first row and the third row are not scanned, the capacitor corresponding to the pixels of the row is in a sleep state, and the capacitance value of the capacitor is not output.
In step 402, when there is a pressing operation on the liquid crystal display panel, a final capacitance value exceeding a preset threshold value, which is a capacitance value held when the spacer corresponding to the capacitor is not pressed, is selected from the final capacitance values of the capacitors in the respective operation states, and the final capacitance value becomes larger when the spacer corresponding to the capacitor is pressed.
When a user performs a pressing operation on the liquid crystal display, the upper substrate is pressed down, so that the distance between the spacer and the opposite substrate is reduced, that is, the distance between the two poles of the capacitor is reduced.
Because each capacitor has a capacitance value when the upper substrate is not pressed in the operating state, the control chip needs to screen out the capacitance values exceeding a preset threshold value from the collected capacitance values, where the preset threshold value is the capacitance value that is maintained when the spacer corresponding to the capacitor is not pressed.
In step 403, a pressure value of the pressing operation is determined according to the final capacitance value.
Since the larger the pressure value at which the user performs the pressing operation is, the smaller the distance between both electrodes of the capacitor is, and the larger the capacitance value is, the pressure value at which the pressing operation is performed can be determined according to the final capacitance value.
In a first implementation manner, a first corresponding relationship may be preset, where the first corresponding relationship includes a corresponding relationship between a final capacitance value and a pressure value, and when a final capacitance value is obtained by screening, a corresponding first value may be found in the first corresponding relationship according to the final capacitance value, and the first value is determined as the pressure value of the pressing operation. The pressure value may be a value uniquely corresponding to one pressure value, or a value interval uniquely corresponding to one pressure value, which is not limited in this embodiment.
In a second implementation manner, a second corresponding relationship may be preset, where the second corresponding relationship includes a corresponding relationship between an average value of the final capacitance values and the pressure values, when at least two final capacitance values are obtained through screening, the average value may be obtained through calculation according to the at least two final capacitance values, then according to the average value, a corresponding second numerical value is found in the second corresponding relationship, and the second numerical value is determined as the pressure value of the pressing operation. The pressure value may be a value uniquely corresponding to one pressure value, or a value interval uniquely corresponding to one pressure value, which is not limited in this embodiment.
The first corresponding relationship and the second corresponding relationship may be the same or different, and the embodiment is not limited.
In a third implementation manner, a third corresponding relationship may be preset, where the third corresponding relationship includes a corresponding relationship between a maximum value of the final capacitance values and the pressure values, when at least two final capacitance values are obtained by screening, the maximum value of the at least two final capacitance values may be determined, a corresponding third numerical value is searched in the third corresponding relationship, and the third numerical value is determined as the pressure value of the pressing operation. The pressure value may be a value uniquely corresponding to one pressure value, or a value interval uniquely corresponding to one pressure value, which is not limited in this embodiment.
The third corresponding relationship may be the same as or different from the first corresponding relationship, and the third corresponding relationship may also be different from the second corresponding relationship, which is not limited in this embodiment.
In a fourth implementation manner, a fourth corresponding relationship may be preset, where the fourth corresponding relationship includes a corresponding relationship between the density of the final capacitance values and the pressure values, when at least two final capacitance values are obtained through screening, the density of the final capacitance values in a unit area is calculated according to the number of the screened final capacitance values, a corresponding fourth numerical value is searched in the fourth corresponding relationship, and the fourth numerical value is determined as the pressure value of the pressing operation. The density may be only corresponding to one pressure value, or one density interval may be only corresponding to one pressure value, which is not limited in this embodiment.
Wherein calculating the density of the final capacitance values per unit area based on the number of the final capacitance values comprises:
1) acquiring the positions of the capacitors corresponding to the screened final capacitance values;
2) calculating the area of a generation region formed by all the positions;
3) the number is divided by the area to obtain the density of the capacitance per unit area.
Since the position of each capacitor is recorded when the capacitor is constructed, the liquid crystal display screen can determine the position of the capacitor corresponding to each screened final capacitance value, combine all the positions to form a generation area, wherein the generation area is a pressing area for pressing operation, and divide the number of the capacitors by the area of the generation area to obtain the density of the capacitors in unit area.
In summary, in the pressure measurement method provided by the present disclosure, the capacitor is controlled to be electrically connected to the corresponding data line through the enable line; outputting the capacitance value of the capacitor through the data line; when there is a pressing operation acting on the liquid crystal display screen, screening out a final capacitance value exceeding a preset threshold value from the final capacitance values of the capacitors in the working state, wherein the preset threshold value is a capacitance value which is kept when the spacer corresponding to the capacitor is not pressed down, and the final capacitance value is a capacitance value which is increased when the spacer corresponding to the capacitor is pressed down; confirm the pressure value of pressing the operation according to final capacitance value, because the user triggers on liquid crystal display when pressing the operation, the spacer can be pressed, the distance between the electric capacity two poles of the earth diminishes this moment, the capacitance value grow, and the pressure value is positive correlation with the final capacitance value of the electric capacity that is in operating condition, therefore, can confirm the pressure value according to the final capacitance value of the electric capacity that is in operating condition, the pressure value is measured through setting up the pressure membrane material to the solution, lead to liquid crystal display's the problem that the structure is complicated, the effect of simplifying liquid crystal display's structure has been reached.
In addition, the pressure value of the pressing operation is determined through four pressure value determining modes, and the effect of improving the accuracy of the pressure value determination can be achieved.
Fig. 5 is a block diagram illustrating a pressure measuring apparatus applied to a liquid crystal display panel shown in fig. 1 according to an exemplary embodiment, the pressure measuring apparatus, as shown in fig. 5, including: a screening module 510, a determination module 520.
The screening module 510 is configured to screen out a final capacitance value exceeding a preset threshold value, which is a capacitance value that is maintained when the spacer corresponding to the capacitor is not pressed, from among final capacitance values of the respective capacitors in the operating state when there is a pressing operation acting on the liquid crystal display panel, the final capacitance value being a capacitance value that becomes larger when the spacer corresponding to the capacitor is pressed;
the determining module 520 is configured to determine the pressure value of the pressing operation according to the final capacitance value screened by the screening module 510.
In summary, the pressure measurement apparatus provided by the present disclosure screens out a final capacitance value exceeding a preset threshold value from the final capacitance values of the capacitors in the operating states, where the preset threshold value is a capacitance value that is maintained when the spacer corresponding to the capacitor is not pressed, and the final capacitance value is a capacitance value that increases when the spacer corresponding to the capacitor is pressed; confirm the pressure value of pressing the operation according to final capacitance value, because the user triggers on liquid crystal display when pressing the operation, the spacer can be pressed, the distance between the electric capacity two poles of the earth diminishes this moment, the capacitance value grow, and the pressure value is positive correlation with the final capacitance value of the electric capacity that is in operating condition, therefore, can confirm the pressure value according to the final capacitance value of the electric capacity that is in operating condition, the pressure value is measured through setting up the pressure membrane material to the solution, lead to liquid crystal display's the problem that the structure is complicated, the effect of simplifying liquid crystal display's structure has been reached.
Fig. 6 is a block diagram illustrating a pressure measuring apparatus applied to a liquid crystal display panel shown in fig. 1 according to an exemplary embodiment, the pressure measuring apparatus, as shown in fig. 6, including: a screening module 610 and a determining module 620.
The screening module 610 is configured to screen out a final capacitance value exceeding a preset threshold value, which is a capacitance value that is held when the spacer corresponding to the capacitor is not pressed, from among final capacitance values of the respective capacitors in the operating state when there is a pressing operation acting on the liquid crystal display panel, which final capacitance value is a capacitance value that becomes larger when the spacer corresponding to the capacitor is pressed;
the determining module 620 is configured to determine the pressure value of the pressing operation according to the final capacitance value screened by the screening module 610.
Optionally, the apparatus further includes: a control module 630 and an output module 640.
The control module 630 is configured to control the capacitors to be electrically connected to the corresponding data lines through the enable lines;
and an output module 640 configured to output the capacitance value of the capacitor through the data line.
Optionally, the determining module 620 includes: a first determining sub-module 621, a second determining sub-module 622, a third determining sub-module 623, and a fourth determining sub-module 624.
The first determining sub-module 621 is configured to, when there is a final capacitance value, search a first value corresponding to the final capacitance value in a preset first corresponding relationship, and determine the first value as a pressure value of the pressing operation;
the second determining sub-module 622, configured to calculate an average value of the at least two final capacitance values when there are at least two final capacitance values, search a second numerical value corresponding to the average value in a preset second corresponding relationship, and determine the second numerical value as a pressure value of the pressing operation;
the third determining sub-module 623 is configured to determine, when there are at least two final capacitance values, a maximum value of the at least two final capacitance values, search a third value corresponding to the maximum value in a preset third correspondence, and determine the third value as a pressure value of the pressing operation;
the fourth determining submodule 624 is configured to, when there are at least two final capacitance values, calculate the density of the final capacitance value in the unit area according to the number of the final capacitance values, search a fourth numerical value corresponding to the density in a preset fourth correspondence, and determine the fourth numerical value as the pressure value of the pressing operation.
In summary, the pressure measurement device provided by the present disclosure controls the capacitor to be electrically connected to the corresponding data line through the enable line; outputting the capacitance value of the capacitor through the data line; when there is a pressing operation acting on the liquid crystal display screen, screening out a final capacitance value exceeding a preset threshold value from the final capacitance values of the capacitors in the working state, wherein the preset threshold value is a capacitance value which is kept when the spacer corresponding to the capacitor is not pressed down, and the final capacitance value is a capacitance value which is increased when the spacer corresponding to the capacitor is pressed down; confirm the pressure value of pressing the operation according to final capacitance value, because the user triggers on liquid crystal display when pressing the operation, the spacer can be pressed, the distance between the electric capacity two poles of the earth diminishes this moment, the capacitance value grow, and the pressure value is positive correlation with the final capacitance value of the electric capacity that is in operating condition, therefore, can confirm the pressure value according to the final capacitance value of the electric capacity that is in operating condition, the pressure value is measured through setting up the pressure membrane material to the solution, lead to liquid crystal display's the problem that the structure is complicated, the effect of simplifying liquid crystal display's structure has been reached.
In addition, the pressure value of the pressing operation is determined through four pressure value determining modes, and the effect of improving the accuracy of the pressure value determination can be achieved.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
An exemplary embodiment of the present disclosure provides a pressure measurement device capable of implementing a pressure measurement method provided by the present disclosure, the pressure measurement device including: a liquid crystal display, a processor, a memory for storing processor-executable instructions, as shown in FIG. 1;
wherein the processor is configured to:
when a pressing operation is performed on the liquid crystal display screen, screening out a final capacitance value exceeding a preset threshold value from the final capacitance values of the capacitors in the working state, wherein the preset threshold value is a capacitance value which is kept when the spacer corresponding to the capacitor is not pressed down, and the final capacitance value is a capacitance value which is increased when the spacer corresponding to the capacitor is pressed down;
and determining the pressure value of the pressing operation according to the final capacitance value.
Fig. 7 is a block diagram illustrating an apparatus 700 for pressure measurement according to an exemplary embodiment. For example, the apparatus 700 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, or the like that includes a liquid crystal display.
Referring to fig. 7, apparatus 700 may include one or more of the following components: a processing component 702, a memory 704, a power component 706, a multimedia component 708, an audio component 710, an input/output (I/O) interface 712, a sensor component 714, and a communication component 716.
The processing component 702 generally controls overall operation of the device 700, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 702 may include one or more processors 718 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 702 may include one or more modules that facilitate interaction between the processing component 702 and other components. For example, the processing component 702 may include a multimedia module to facilitate interaction between the multimedia component 708 and the processing component 702.
The memory 704 is configured to store various types of data to support operations at the apparatus 700. Examples of such data include instructions for any application or method operating on device 700, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 704 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The power supply component 706 provides power to the various components of the device 700. The power components 706 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the apparatus 700.
The multimedia component 708 includes a liquid crystal display that provides an output interface between the device 700 and a user. In some embodiments, the liquid crystal display may include a display panel (LCD) and a Touch Panel (TP). If the liquid crystal display includes a touch panel, the liquid crystal display may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 708 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 700 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 710 is configured to output and/or input audio signals. For example, audio component 710 includes a Microphone (MIC) configured to receive external audio signals when apparatus 700 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 704 or transmitted via the communication component 716. In some embodiments, audio component 710 also includes a speaker for outputting audio signals.
The I/O interface 712 provides an interface between the processing component 702 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor assembly 714 includes one or more sensors for providing status assessment of various aspects of the apparatus 700. For example, sensor assembly 714 may detect an open/closed state of device 700, the relative positioning of components, such as a display and keypad of device 700, sensor assembly 714 may also detect a change in position of device 700 or a component of device 700, the presence or absence of user contact with device 700, orientation or acceleration/deceleration of device 700, and a change in temperature of device 700. The sensor assembly 714 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 714 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 714 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 716 is configured to facilitate wired or wireless communication between the apparatus 700 and other devices. The apparatus 700 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 716 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 716 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 700 may be implemented by one or more Application Specific Integrated Chips (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 704 comprising instructions, executable by the processor 718 of the apparatus 700 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the present invention is not limited to the precise arrangements described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims (9)

1. A liquid crystal display, said liquid crystal display comprising: the display panel and the touch panel are respectively and electrically connected with the control chip, and the upper surface of the display panel is attached to the lower surface of the touch panel;
the display panel comprises a lower substrate, an upper substrate arranged in parallel relative to the lower substrate, and a liquid crystal layer sealed in a cavity formed by the upper substrate and the lower substrate;
the cavity also comprises a raised spacer array, the spacer array is used for supporting the lower substrate and the upper substrate to form the cavity, the spacer array is formed on at least one of the lower surface of the upper substrate and the upper surface of the lower substrate, the spacer array and the opposite substrate form n capacitors, each capacitor corresponds to one spacer, and n is a positive integer; one electrode of each capacitor is the spacer, the other electrode of each capacitor is a conductive pattern which is opposite to the spacer one by one, the surface of the spacer is coated with a conductive material, and the conductive pattern is arranged on the substrate; the substrate is at least one of the upper substrate and the lower substrate; the n capacitors are uniformly distributed in the cavity, and the number of the capacitors in unit area is larger than a preset threshold value;
each capacitor is electrically connected to the control chip through a corresponding enable line, and each capacitor is electrically connected with the data line through a switch;
when the control chip controls the switch of the capacitor to be in a first state through the enable line, the capacitor is in a working state; when the control chip controls the switch of the capacitor to be in a second state through the enable line, the capacitor is in a dormant state;
a capacitance value of the capacitor becomes larger when the capacitor is in an operating state and the spacer corresponding to the capacitor is pressed, resulting in a distance between the spacer and the conductive pattern becoming smaller; the capacitance value of the capacitor remains unchanged when the capacitor is in an operating state and the spacer corresponding to the capacitor is not pressed.
2. The liquid crystal display panel of claim 1,
when the spacer is formed on the lower surface of the upper substrate as one electrode of the capacitor, the other electrode of the capacitor is a conductive pattern arranged on the upper surface of the lower substrate; alternatively, the first and second electrodes may be,
when the spacer is formed on the upper surface of the lower substrate as one electrode of the capacitor, the other electrode of the capacitor is a conductive pattern disposed on the lower surface of the upper substrate.
3. The liquid crystal display panel of claim 1,
two rows of spacers distributed over adjacent capacitors are adjacent or spaced apart by a predetermined row; alternatively, the first and second electrodes may be,
two columns of spacers distributed over adjacent capacitors are adjacent or spaced apart by a predetermined column.
4. A pressure measuring method for use in the liquid crystal display panel according to any one of claims 1 to 3, the method comprising:
the capacitor in the working state is electrically connected with the corresponding data line through an enable line control switch;
outputting the capacitance value of the capacitor through the data line;
when there is a pressing operation acting on the liquid crystal display screen, screening out a final capacitance value exceeding a preset threshold value from final capacitance values of the capacitors in the working states, wherein the preset threshold value is a capacitance value which is kept when the spacer corresponding to the capacitor is not pressed down, and the final capacitance value is a capacitance value which is increased when the spacer corresponding to the capacitor is pressed down;
and determining the pressure value of the pressing operation according to the final capacitance value.
5. The method of claim 4, wherein determining the pressure value of the pressing operation as a function of the final capacitance value comprises:
when a final capacitance value exists, searching a first numerical value corresponding to the final capacitance value in a preset first corresponding relation, and determining the first numerical value as a pressure value of the pressing operation; alternatively, the first and second electrodes may be,
when at least two final capacitance values exist, calculating an average value of the at least two final capacitance values, searching a second numerical value corresponding to the average value in a preset second corresponding relation, and determining the second numerical value as a pressure value of the pressing operation; alternatively, the first and second electrodes may be,
when at least two final capacitance values exist, determining the maximum value of the at least two final capacitance values, searching a third numerical value corresponding to the maximum value in a preset third corresponding relation, and determining the third numerical value as the pressure value of the pressing operation; alternatively, the first and second electrodes may be,
when at least two final capacitance values exist, calculating the density of the final capacitance values in a unit area according to the number of the final capacitance values, searching a fourth numerical value corresponding to the density in a preset fourth corresponding relation, and determining the fourth numerical value as the pressure value of the pressing operation.
6. A pressure measuring device for use in a liquid crystal display panel according to any one of claims 1 to 3, said device comprising:
the control module is configured to enable the capacitor in the working state to be electrically connected with the corresponding data line through an enabling line control switch;
an output module configured to output a capacitance value of the capacitor through the data line;
a screening module configured to screen out a final capacitance value exceeding a preset threshold value, which is a capacitance value that is held when the spacer corresponding to the capacitor is not pressed, from among final capacitance values of the capacitors each in an operating state when there is a pressing operation acting on the liquid crystal display panel, the final capacitance value being a capacitance value that becomes larger when the spacer corresponding to the capacitor is pressed;
a determination module configured to determine a pressure value of the pressing operation according to the final capacitance value screened out by the screening module.
7. The apparatus of claim 6, wherein the determining module comprises:
a first determination sub-module configured to, when there is a final capacitance value, find a first value corresponding to the final capacitance value in a preset first correspondence relationship, and determine the first value as a pressure value of the pressing operation;
a second determination sub-module configured to, when there are at least two final capacitance values, calculate an average value of the at least two final capacitance values, search for a second numerical value corresponding to the average value in a preset second correspondence, and determine the second numerical value as a pressure value of the pressing operation;
a third determining sub-module configured to determine, when there are at least two final capacitance values, a maximum value of the at least two final capacitance values, search a third value corresponding to the maximum value in a preset third correspondence, and determine the third value as a pressure value of the pressing operation;
and the fourth determining sub-module is configured to calculate the density of the final capacitance values in a unit area according to the number of the final capacitance values when at least two final capacitance values exist, search a fourth numerical value corresponding to the density in a preset fourth corresponding relation, and determine the fourth numerical value as the pressure value of the pressing operation.
8. A pressure measurement device, the device comprising:
a liquid crystal display panel according to any one of claims 1 to 3;
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
the capacitor in the working state is electrically connected with the corresponding data line through an enable line control switch;
outputting the capacitance value of the capacitor through the data line;
when there is a pressing operation acting on the liquid crystal display screen, screening out a final capacitance value exceeding a preset threshold value from final capacitance values of the capacitors in the working states, wherein the preset threshold value is a capacitance value which is kept when the spacer corresponding to the capacitor is not pressed down, and the final capacitance value is a capacitance value which is increased when the spacer corresponding to the capacitor is pressed down;
and determining the pressure value of the pressing operation according to the final capacitance value.
9. A computer-readable storage medium, characterized in that a program is stored in the computer-readable storage medium, which is called and executed by a processor to implement the pressure measurement method according to claim 4 or 5.
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