CN205563517U - Pressure detection structure and touch device - Google Patents
Pressure detection structure and touch device Download PDFInfo
- Publication number
- CN205563517U CN205563517U CN201620199781.6U CN201620199781U CN205563517U CN 205563517 U CN205563517 U CN 205563517U CN 201620199781 U CN201620199781 U CN 201620199781U CN 205563517 U CN205563517 U CN 205563517U
- Authority
- CN
- China
- Prior art keywords
- pressure detection
- display device
- pressure
- pressure transducer
- detection structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Abstract
The utility model provides a pressure detection structure and touch device, the structure includes apron, display device and pressure sensor, and display device is located the below of apron, and display device is LCD display device, LCD display device includes display module assembly, optical components that from the top down stacked in proper order to and holding display module assembly and optical components's shell, inside pressure sensor is located display device, among the display device arbitrary electrically conductive regard as reference electrode or there is the deformable clearance layer of pressurized in the center as reference electrode between pressure sensor and the reference electrode, optical components is including being used for providing the backlight subassembly of light source and being used for guiding the light that the backlight subassembly sent to the leaded light subassembly of display module assembly, and the leaded light subassembly is located the below of display module assembly, and the backlight subassembly is located the below of leaded light subassembly, and the backlight subassembly includes the light source and is used for bearing the base plate of light source. The utility model discloses pressure detection can be accurately carried out and the display effect of product can be improved.
Description
Technical field
This utility model relates to touch screen technology field, particularly relates to a kind of pressure detection structure and touch apparatus.
Background technology
Current touch apparatus (as touched mobile phone), generally utilizes pressure transducer to detect the pressure that staff touches.The pressure detection structure of touch apparatus is arranged on the center of touch apparatus, including cover plate, display device and pressure transducer.When described display device is LCD display part (that is, display screen), described display module is liquid crystal module, and described display device also includes optical module and carries described liquid crystal module and the shell of described optical module.When described display device is light-emitting diode display part, described display module is LED module, and described display device also includes the flexible foamed cotton layer for shading Yu buffering.
See Fig. 1 .1, Fig. 1 .2 and Fig. 2 .1, in prior art, pressure detecting implementation is: when being applied on cover plate effectively, cover plate deforms upon, thus change the spacing between pressure transducer and display screen, electric capacity between conductive layer on pressure transducer and display screen is changed, identifies pressure size according to variable quantity.From realizing principle, needing the detection spacing controlling well between display screen and pressure transducer, this detection spacing i.e. schemes shown gap.But, this gap is limited to that volume production assembly process is many, build-up member is many, causes build-up tolerance bigger.Meanwhile, between different machines, this tolerance of the spacing of display screen and pressure transducer will affect the concordance between machine, thus causes the experience difference between machine.And, the falling of machine product, crimp is all easier to change this gap length, reduce the reliability of product, and, seeing Fig. 1 .1, its light source 6 is positioned on substrate 10, but the backlight that formed together of light source and substrate is positioned at the sidepiece of optical module, it makes touch apparatus in prior art be frequently present of, and light that the problem that display effect is poor, such as display screen show is uneven or unstable.
Therefore, touch apparatus the most accurately carries out pressure detecting and can have preferable optics display effect, becomes to need badly in prior art and solves the technical problem that.
Utility model content
In view of this, this utility model provides a kind of pressure detection structure and touch apparatus, and it can accurately carry out pressure detecting and have preferable display effect.
This utility model provides a kind of pressure detection structure, and described structure is arranged on the center of touch apparatus, and including cover plate, display device and pressure transducer, described display device is positioned at the lower section of described cover plate, and described display device is LCD display part；Described LCD display part includes display module, the optical module stacked the most successively, and house described display module and the shell of described optical module, described pressure transducer is positioned at inside described display device, in described display device, arbitrary electric-conductor is as reference electrode or described center as reference electrode, there is the deformable clearance layer of pressurized between described pressure transducer and described reference electrode；Described optical module includes for providing the backlight assembly of light source and the light for being sent by backlight assembly to guide to the leaded light component showing module, described leaded light component is positioned at the lower section of described display module, described backlight assembly is positioned at the lower section of described leaded light component, and described backlight assembly includes light source and for carrying the substrate of described light source.
This utility model also provides for a kind of touch apparatus, and including center and be arranged on the pressure detection structure on described center, described pressure detection structure is described above.
From above technical scheme, pressure transducer is arranged at inside described display device by this utility model, in described display device, arbitrary electric-conductor or conduction center are as reference electrode, there is the deformable clearance layer of pressurized between described pressure transducer and described reference electrode.Thus, it is to avoid due to the concordance of pressure-sensing between display module and the tolerances touch apparatus of center spacing, reduce the tolerance of touch apparatus final assembly.Further, when volume production is tested, individual monitor part can carry out stress test, it is not necessary to is coordinated with center by display device and just can carry out stress test, improves test production efficiency.Simultaneously, its described leaded light component is positioned at the lower section of described display module, described backlight assembly is positioned at the lower section of described leaded light component so that the light that light source sends preferably can guide to display module from multiple angles, and then makes to show that the optical effect of module and touch apparatus is more preferable.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments described in this utility model, for those of ordinary skill in the art, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 .1 is the structural representation of optical module in prior art；
Fig. 1 .2 is the detecting electrode structural representation with reference electrode formation electric capacity of pressure transducer；
Fig. 2 .1 is the schematic diagram of the capacitance structure of pressure detection structure in prior art；
Fig. 3 .1 is the capacitance structure schematic diagram of pressure detecting in a kind of pressure detection structure in this utility model；
Fig. 3 .2 is a kind of schematic diagram arranging position of pressure transducer in a kind of pressure detection structure in this utility model；
Fig. 4 is a kind of schematic diagram arranging position of pressure transducer in a kind of pressure detection structure in this utility model；
Fig. 5 is a kind of capacitance structure schematic diagram that in this utility model, a kind of pressure detection structure carries out pressure detecting；
Fig. 6 is the structural representation of an embodiment of a kind of pressure detection structure in this utility model；
Fig. 7 is the structural representation in a kind of embodiment of optical module in this utility model；
Fig. 8 is the structural representation in a kind of embodiment of optical module in this utility model；
Fig. 9 is the structural representation of an embodiment of a kind of pressure detection structure in this utility model；
Figure 10 is the structural representation of an embodiment of a kind of pressure detection structure not having shell on the back in this utility model；
Figure 11 is the structural representation in a kind of embodiment of optical module in this utility model；
Figure 12 is to be provided with the structural representation in a kind of embodiment of pressure transducer in this utility model on the substrate of optical module；
Figure 13 is to be provided with the structural representation in a kind of embodiment of pressure transducer in this utility model on the substrate of optical module；
Figure 14 is the structural representation in a kind of embodiment of optical module in this utility model；
Figure 15 is the structural representation in a kind of embodiment of optical module in this utility model；
Figure 16 is the structural representation of an embodiment of a kind of pressure detection structure in this utility model；
Detailed description of the invention
Pressure transducer is arranged at inside described display device by this utility model, and in described display device, arbitrary electric-conductor or conduction center are as reference electrode, there is the deformable clearance layer of pressurized between described pressure transducer and described reference electrode.Thus, it is to avoid due to the concordance of pressure-sensing between display module and the tolerances touch apparatus of center spacing, reduce the tolerance of touch apparatus final assembly.Further, when volume production is tested, individual monitor part can carry out stress test, it is not necessary to is coordinated with center by display device and just can carry out stress test, improves test production efficiency.And, optical module includes for providing the backlight assembly of light source and the light for being sent by backlight assembly to guide to the leaded light component showing module, described leaded light component is positioned at the lower section of described display module, described backlight assembly is positioned at the lower section of described leaded light component, described backlight assembly includes light source and for carrying the substrate of described light source, the light that light source is sent preferably can guide to display module from multiple angles, and then makes to show that the optical effect of module and touch apparatus is more preferable.
Certainly, all advantages that arbitrary technical scheme of the present utility model must be not necessarily required to reach above simultaneously are implemented.
For the technical scheme making those skilled in the art be more fully understood that in this utility model, below in conjunction with the accompanying drawing in this utility model embodiment, technical scheme in this utility model embodiment is clearly and completely described, obviously, described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained, all should belong to the scope of this utility model protection.
Further illustrate this utility model below in conjunction with this utility model accompanying drawing to implement.
See shown in Fig. 3 .1 to Figure 16, this utility model provides a kind of pressure detection structure, and described structure is arranged on the center of touch apparatus, including cover plate, display device and pressure transducer 12, described display device is positioned at the lower section of described cover plate, and described display device is LCD display part；
Described LCD display part includes display module, the optical module stacked the most successively, and house described display module and the shell of described optical module, described pressure transducer 12 is positioned at inside described display device, in described display device arbitrary electric-conductor as reference electrode or described center as reference electrode (if the most described center is electric-conductor, then center can also be as reference electrode), there is the deformable clearance layer of pressurized between described pressure transducer and described reference electrode；
Described optical module includes for providing the backlight assembly of light source and the light for being sent by backlight assembly to guide to the leaded light component showing module, described leaded light component is positioned at the lower section of described display module, described backlight assembly is positioned at the lower section of described leaded light component, and described backlight assembly includes light source 6 and for carrying the substrate 10 of described light source.
Pressure transducer 12 and reference electrode described in the present embodiment be all arranged at inside described display device, it is to avoid due to the concordance of pressure-sensing between display module and the tolerances touch apparatus of center spacing, reduces the tolerance of touch apparatus final assembly.Further, when volume production is tested, individual monitor part can carry out stress test, it is not necessary to is coordinated with center by display device and just can carry out stress test, improves test production efficiency.Simultaneously, its described leaded light component is positioned at the lower section of described display module, described backlight assembly is positioned at the lower section of described leaded light component so that the light that light source sends preferably can guide to display module from multiple angles, and then makes to show that the optical effect of module and touch apparatus is more preferable.
In the pressure detection structure that this utility model provides, light source 6 is improved to all be covered with illuminating source in the viewing area of whole display device by it, and light source can be common object that can be luminous, preferably, light source can also be the luminous bodys such as LED, OLED, and its energy-conserving and environment-protective and illumination effect are preferable.Illuminating source 6 is arranged in above substrate, has some on the substrate 10 and controls control circuit necessary to illuminating source.The benefit being so designed that is to need not import light from side, but irradiates directly towards liquid crystal module and propagate so that light more uniformly with bright, and then can make touch apparatus display effect more preferable.
Preferably, pressure transducer is positioned on the substrate of described backlight assembly.So, pressure transducer is equivalent to be positioned at the inside of display device, and meanwhile, the parts of detection pressure can be integrated in backlight assembly by it, and then can reduce technique and cost.It is highly preferred that the parts of the conduction on the electric-conductor on the substrate of backlight assembly described in described pressure transducer multiplexing, the i.e. substrate of backlight assembly directly multiplexing as pressure transducer, further can reduce technique and cost.Pressure transducer may be located at top and/or the bottom of described substrate.Preferably, described OLED is distributed on described substrate uniformly, and pressure transducer is distributed on described substrate uniformly, and it can further improve the accuracy of detection and improve display effect.
It is further preferred that described backlight assembly also includes light source described in backboard, described backboard and described substrate clamping.(being i.e. equivalent to be disposed with illuminating source in two pieces of substrates, illuminating source is sealed between two substrates.Baseplate material can be glass, plastics etc..) itself so that light source make thinner, energy-conservation and more meet the certain customers' light, thin demand to end product.
Preferably, substrate is installed on described shell, and described shell includes that support, described support are positioned at display module and the sidepiece of optical module.Equally, described shell can include shell on the back and be connected to the support at described shell on the back edge, and described shell on the back is positioned at the lower section of described optical module.I.e. shell can only have the support of sidepiece, so can reduce technique and cost.
In this utility model implements, when described display device is LCD display part, described display module is liquid crystal module, and described display device also includes optical module 3 and carries described liquid crystal module and the shell of described optical module 3.Those skilled in the art know, display module generally includes glass, lower glass and the various materials between upper glass and lower glass, the such as liquid crystal material between upper glass and lower glass, or the liquid crystal layer being mixed with other material (is not excluded for being mixed with the liquid crystal compound of other material such as LED and liquid crystal layer.
Described shell can be full lid formula with the matching relationship of cover plate 1.Shell is all placed in shell more than display module, display module and optical module 3.Shell includes shell on the back 8 and is connected to the support 4 at described shell on the back 8 edge.Cover plate 1 is placed in support 4 top, and support 4 upper end is connected by adhesive glue 2 or other modes are fixing with cover plate 1.For simplicity, the accompanying drawing in subsequent embodiment all eliminates center.It should be noted that, there is inside display device gap 9, because within display device display module and 3 the most whole bondings of optical module be close together, so having gap 9 between any two, this gap in filling can be air can also be flexible filler.
Meanwhile, described shell can be part lid formula with the matching relationship of cover plate 1.Shell is more than optical module 3 but not larger than shows module, and optical module 3 is placed in shell, and display module is placed in support 4 top, and is connected by adhesive glue 2 or other modes are fixing with support 4 upper end.
Specifically, pressure transducer 12 is capacitance type sensor, and its detecting electrode is general arranges in matrix form as shown in the figure, and on base plate, the detecting electrode of arrangement needs to form electric capacity Cap1 as shown in Figure 3 .2 with extraneous reference electrode.
Seeing Fig. 3 .1 to Fig. 3 .2, described pressure transducer 12 can be located at the lower surface of the lower glass 221 of described display module.
Specifically, when described display device is LCD display part, the designing material of described pressure transducer 12 is optical clear conductive material, such as ITO.Therefore, it is the thinnest that described pressure transducer 12 can design, and will not increase the thickness of display module (liquid crystal module) 22.
During the upper surface of the lower glass 221 that described pressure transducer 12 is positioned at described display module, described pressure transducer 12 is the drive electrode of the upper surface of the lower glass 221 of described display module.
During the upper surface of the upper glass that described pressure transducer 12 is positioned at described display module, described pressure transducer 12 is the drive electrode of the upper surface of the upper glass of described display module.
The present embodiment drive electrode is being in different duties the most in the same time, and this design can reduce the lower glass of described display module or the operation of conductive layer added by upper glass, reduces cost.
Specifically, making if described center is the conductive materials such as metal, when the most described display device is LCD display part or light-emitting diode display part, the center of described conduction can serve as reference electrode.
When cover plate 1 pressurized, pressure transmission to display module, order display module produces deformation.Thus change the distance between detecting electrode and the described center of described conduction of described pressure transducer 12.See Fig. 4, the detecting electrode of described pressure transducer 12 and changing as the capacitance between the described center of the described conduction of reference electrode, produce pressure signal.
Current embodiment require that the tolerance of control is mainly in shell and display module (part lid formula) or the thickness of the adhesive glue of cover plate 1 (full lid formula), the flatness of described shell.Shell is easily controlled with the thickness of display module adhesive glue, and the tolerance of itself is less.The flatness of shell be then can accomplish high-precision, the present embodiment with the structure of Fig. 1 design compared with, pressure-sensing can be carried out more accurately.
Further, tolerances factor is all controlled, in display module internal, volume production more preferably to control, is susceptible to the impact of touch apparatus final assembly by the present embodiment.Falling of touch apparatus, the impact that crimp etc. carries out pressure-sensing to pressure detection structure is the least.
Concrete, described optical module 3 can be designed to use conduction or have the material of conducting particles, thus forms the electric-conductor as reference electrode.
Generally using the electric-conductor on optical module as reference electrode time, described shell can include or not include shell on the back 8, or shell on the back 8 is not metal material.When certain described shell includes metal shell on the back 8, it is possible to use the electric-conductor on optical module 3 as reference electrode.
When cover plate 1 pressurized, pressure transmission to display module, order display module produces deformation.Thus change the distance between detecting electrode and the described optical module 3 of described pressure transducer 12, and see Fig. 5, the detecting electrode of described pressure transducer 12 and changing as the capacitance between the described optical module 3 of reference electrode, produce pressure signal.
Current embodiment require that the tolerance of control is mainly in shell and display module (part lid formula) or the thickness of the adhesive glue of cover plate 1 (full lid formula), the flatness of described shell.Shell is easily controlled with the thickness of display module adhesive glue, and the tolerance of itself is less.The flatness of shell be then can accomplish high-precision, the present embodiment with the structure of Fig. 1 design compared with, pressure-sensing can be carried out more accurately.
Further, tolerances factor is all controlled, in display module internal, volume production more preferably to control, is susceptible to the impact of touch apparatus final assembly by the present embodiment.Falling of touch apparatus, the impact that crimp etc. carries out pressure-sensing to pressure detection structure is the least.
In this utility model further implements, when described pressure transducer 12 is as shown in Fig. 3 .1 to Fig. 8, described display device is LCD display part, and described shell includes metal shell on the back 8 and is connected to the support 4 at described metal shell on the back 8 edge, and described metal shell on the back 8 can be as reference electrode.
When cover plate 1 pressurized, pressure transmission to display module, order display module produces deformation.Thus change the distance between the detecting electrode of described pressure transducer 12 and described metal shell on the back 8, see Fig. 6, the detecting electrode of described pressure transducer 12 and changing as the capacitance between the described metal shell on the back 8 (conductive material) of reference electrode, produces pressure signal.
Current embodiment require that the tolerance of control is mainly in shell and display module (part lid formula) or the thickness of the adhesive glue of cover plate 1 (full lid formula), the flatness of described shell.Shell is easily controlled with the thickness of display module adhesive glue, and the tolerance of itself is less.The flatness of shell be then can accomplish high-precision, the present embodiment with the structure of Fig. 1 design compared with, pressure-sensing can be carried out more accurately.
Further, tolerances factor is all controlled, in display module internal, volume production more preferably to control, is susceptible to the impact of touch apparatus final assembly by the present embodiment.Falling of touch apparatus, the impact that crimp etc. carries out pressure-sensing to pressure detection structure is the least.
In this utility model further implements, described display device is provided for shielding the bucking electrode of extraneous plane of reference impact.
Electric capacity between described pressure transducer 12 and described bucking electrode is constant.
Described bucking electrode is for shielding the interference in the external world, and controls tolerance further.
Seeing Fig. 7, this utility model realizes needing three electrodes to form two electric capacity, the detecting electrode in pressure transducer 12, is connected to integrating control chip IC.Wherein the electric capacity between detecting electrode and reference electrode is effective shape changing detection electric capacity Cap1, and the deformation that i.e. pressure brings can change the spacing between the two electrode, thus change this electric capacity.Therefore, this utility model pressure transducer 12 is by detecting the electric capacity between its detecting electrode and reference electrode, and output pressure signal is to integrating control chip IC.
Electric capacity between detecting electrode and bucking electrode is fixed capacity Cap2, the function influence that spacing between the two electrode does not stresses, the Main Function of bucking electrode is the impact of shielding other plane of references extraneous, making deformation effective capacitance only have this electric capacity of Cap1, this is that reduction external interference and allowance control are had bigger effect.
Specifically, described bucking electrode is positioned in described display device, and described bucking electrode is the conductive layer on described pressure transducer 12 position.Bucking electrode and reference electrode are and utilize the conductive plane that in display device internal structure, self exists to serve as, and bucking electrode, reference electrode and pressure transducer 12 (detecting electrode) are all inside display device.
Thus, it is to avoid due to the concordance of pressure-sensing between display module and the tolerances touch apparatus of center spacing, reduce the tolerance of touch apparatus final assembly.Further, when volume production is tested, individual monitor part can carry out stress test, it is not necessary to is coordinated with center by display device and just can carry out stress test, improves test production efficiency.
Seeing Fig. 5 to Fig. 8, when described display device is LCD display part, described pressure transducer 12 is positioned at the surface of the optical module 3 included by described display device.
The designing material of described pressure transducer 12 is optical clear conductive material, such as ITO.Therefore, it is the thinnest that described pressure transducer 12 can design, and will not increase the thickness of display module.
When described pressure transducer 12 as shown in Figure 8, described reference electrode can be the described center of the conduction that described touch apparatus includes.
When cover plate 1 pressurized, pressure transmission to display module, order display module produces deformation.Thus change the distance between detecting electrode and the described center of described conduction of described pressure transducer 12.See Fig. 4, the detecting electrode of described pressure transducer 12 and changing as the capacitance between the described center of the described conduction of reference electrode, produce pressure signal.
Current embodiment require that the tolerance of control is mainly in shell and display module (part lid formula) or the thickness of the adhesive glue of cover plate 1 (full lid formula), the flatness of described shell.Shell is easily controlled with the thickness of display module adhesive glue, and the tolerance of itself is less.The flatness of shell be then can accomplish high-precision, the present embodiment with the structure of Fig. 1 design compared with, pressure-sensing can be carried out more accurately.
Further, tolerances factor is all controlled, in display module internal, volume production more preferably to control, is susceptible to the impact of touch apparatus final assembly by the present embodiment.Falling of touch apparatus, the impact that crimp etc. carries out pressure-sensing to pressure detection structure is the least.
During at this utility model, another implements, when described pressure transducer 12 as shown in Figure 8, described reference electrode can be the electric-conductor of described display module internal.
When cover plate 1 pressurized, pressure transmission to display module, order display module produces deformation.Thus change the distance between detecting electrode and the described center of described conduction of described pressure transducer 12.See Fig. 9, the detecting electrode of described pressure transducer 12 and changing as the capacitance between the described center of the described conduction of reference electrode, produce pressure signal.
Current embodiment require that the tolerance of control is mainly in shell and display module (part lid formula) or the thickness of the adhesive glue of cover plate 1 (full lid formula), the flatness of described shell.Shell is easily controlled with the thickness of display module adhesive glue, and the tolerance of itself is less.The flatness of shell be then can accomplish high-precision, the present embodiment with the structure of Fig. 1 design compared with, pressure-sensing can be carried out more accurately.
Further, tolerances factor is all controlled, in display module internal, volume production more preferably to control, is susceptible to the impact of touch apparatus final assembly by the present embodiment.Falling of touch apparatus, the impact that crimp etc. carries out pressure-sensing to pressure detection structure is the least.
In this utility model further implements, when described pressure transducer 12 as it can be seen, the electric-conductor on optical module 3 included by described display device is as reference electrode.
Concrete, described optical module 3 can be designed to use conduction or have the material of conducting particles, thus forms the electric-conductor as reference electrode.
Generally using the electric-conductor on optical module as reference electrode time, described shell does not include shell on the back 8, or shell on the back 8 is not metal material.When certain described shell includes metal shell on the back 8, it is possible to use the electric-conductor on optical module 3 as reference electrode.
When cover plate 1 pressurized, pressure transmission to display module, order display module produces deformation.Thus change the distance between detecting electrode and the described optical module 3 of described pressure transducer 12, and see Fig. 5, the detecting electrode of described pressure transducer 12 and changing as the capacitance between the described optical module 3 of reference electrode, produce pressure signal.
Current embodiment require that the tolerance of control is mainly in shell and display module (part lid formula) or the thickness of the adhesive glue of cover plate 1 (full lid formula), the flatness of described shell.Shell is easily controlled with the thickness of display module adhesive glue, and the tolerance of itself is less.The flatness of shell be then can accomplish high-precision, the present embodiment with the structure of Fig. 1 design compared with, pressure-sensing can be carried out more accurately.
Further, tolerances factor is all controlled, in display module internal, volume production more preferably to control, is susceptible to the impact of touch apparatus final assembly by the present embodiment.Falling of touch apparatus, the impact that crimp etc. carries out pressure-sensing to pressure detection structure is the least.
In this utility model further implements, when described pressure transducer 12 as shown in Figure 8, described shell includes metal shell on the back 8 and is connected to the support 4 at described metal shell on the back 8 edge, and described metal shell on the back 8 can be as reference electrode.
When cover plate 1 pressurized, pressure transmission to display module, order display module produces deformation.Thus change the distance between the detecting electrode of described pressure transducer 12 and described metal shell on the back 8, see Fig. 6, the detecting electrode of described pressure transducer 12 and changing as the capacitance between the described metal shell on the back 8 (conductive material) of reference electrode, produces pressure signal.
Current embodiment require that the tolerance of control is mainly in shell and display module (part lid formula) or the thickness of the adhesive glue of cover plate 1 (full lid formula), the flatness of described shell.Shell is easily controlled with the thickness of display module adhesive glue, and the tolerance of itself is less.The flatness of shell be then can accomplish high-precision, the present embodiment with the structure of Fig. 1 design compared with, pressure-sensing can be carried out more accurately.
Further, tolerances factor is all controlled, in display module internal, volume production more preferably to control, is susceptible to the impact of touch apparatus final assembly by the present embodiment.Falling of touch apparatus, the impact that crimp etc. carries out pressure-sensing to pressure detection structure is the least.
In preferred embodiment of the present utility model, between each independent illumination light source in backlight, there is gap, there is conductive layer on the substrate 10, in the detecting electrode design of pressure transducer gap between independent illumination light source, detecting electrode at least one, can be multiple.
Now, reference electrode can be the conductive layer within liquid crystal module, the conductive layer of lower lower glass surface, the optics of conduction, it is also possible to be metal shell on the back, or metal center, it is also possible to have protruding reinforcement step inside the shell, and luminous plaque can be erected on step.
In addition to this situation, can also be by the position exchange of pressure detecting electrode with reference electrode, i.e. can be by the conductive layer within liquid crystal module, the conductive layer of lower lower glass surface, the optics of conduction, the conductive layer being arranged on metal center or metal shell on the back is designed as detecting electrode, and then the conductive layer on luminous plaque is as reference electrode.
In this utility model further implements, described display device is provided for shielding the bucking electrode of extraneous plane of reference impact.
Electric capacity between described pressure transducer 12 and described bucking electrode is constant.
Described bucking electrode is for shielding the interference in the external world, and controls tolerance further.
Seeing Fig. 7, this utility model realizes needing three electrodes to form two electric capacity, the detecting electrode in pressure transducer 12, is connected to integrating control chip IC.Wherein the electric capacity between detecting electrode and reference electrode is effective shape changing detection electric capacity Cap1, and the deformation that i.e. pressure brings can change the spacing between the two electrode, thus change this electric capacity.Therefore, this utility model pressure transducer 12 is by detecting the electric capacity between its detecting electrode and reference electrode, and output pressure signal is to integrating control chip IC.
Electric capacity between detecting electrode and bucking electrode is fixed capacity Cap2, the function influence that spacing between the two electrode does not stresses, the Main Function of bucking electrode is the impact of shielding other plane of references extraneous, making deformation effective capacitance only have this electric capacity of Cap1, this is that reduction external interference and allowance control are had bigger effect.
Specifically, described bucking electrode is positioned in described display device, and described bucking electrode is the conductive layer on described pressure transducer 12 position.Bucking electrode and reference electrode are and utilize the conductive plane that in display device internal structure, self exists to serve as, and bucking electrode, reference electrode and pressure transducer 12 (detecting electrode) are all inside display device.
Thus, it is to avoid due to the concordance of pressure-sensing between display module and the tolerances touch apparatus of center spacing, reduce the tolerance of touch apparatus final assembly.Further, when volume production is tested, individual monitor part can carry out stress test, it is not necessary to is coordinated with center by display device and just can carry out stress test, improves test production efficiency.
In this utility model further implements, this utility model also provides for a kind of touch apparatus, and including center and be arranged on the pressure detection structure on described center, described pressure detection structure is described above.
Although having been described for preferred embodiment of the present utility model, but those skilled in the art once know basic creative concept, then these embodiments can be made other change and amendment.So, claims are intended to be construed to include preferred embodiment and fall into all changes and the amendment of this utility model scope.Obviously, those skilled in the art can carry out various change and modification without deviating from spirit and scope of the present utility model to this utility model.So, if these amendments of the present utility model and modification belong within the scope of this utility model claim and equivalent technologies thereof, then this utility model is also intended to comprise these change and modification.
Claims (16)
1. a pressure detection structure, described structure is arranged on the center of touch apparatus, including cover plate,
Display device and pressure transducer, described display device is positioned at the lower section of described cover plate, described display device
For LCD display part；
Described LCD display part includes display module, the optical module stacked the most successively, and
Accommodating described display module and the shell of described optical module, it is characterised in that described pressure transducer position
Inside described display device, in described display device, arbitrary electric-conductor is as reference electrode or described center
As reference electrode, between described pressure transducer and described reference electrode, there is the deformable gap of pressurized
Layer；
Described optical module includes for providing the backlight assembly of light source and for by backlight assembly
The light sent guides to the leaded light component showing module, and described leaded light component is positioned at described display module
Lower section, described backlight assembly is positioned at the lower section of described leaded light component, and described backlight assembly includes light source
And for carrying the substrate of described light source.
Pressure detection structure the most according to claim 1, it is characterised in that described light source is LED.
Pressure detection structure the most according to claim 2, it is characterised in that described light source is OLED.
4. according to the pressure detection structure described in Claims 2 or 3, it is characterised in that described pressure passes
Sensor is positioned on the substrate of described backlight assembly.
5. according to the pressure detection structure described in Claims 2 or 3, it is characterised in that described pressure passes
Electric-conductor on the substrate of backlight assembly described in sensor multiplexing.
Pressure detection structure the most according to claim 5, it is characterised in that described pressure transducer
It is positioned at top or the bottom of described substrate.
Pressure detection structure the most according to claim 3, it is characterised in that described OLED is equal
Even is distributed on described substrate.
Pressure detection structure the most according to claim 7, it is characterised in that described pressure transducer
Electric-conductor on the substrate of backlight assembly described in multiplexing, and described pressure transducer is distributed in institute uniformly
State on substrate.
Pressure detection structure the most according to claim 8, it is characterised in that described backlight assembly
Also include light source described in backboard, described backboard and described substrate clamping.
Pressure detection structure the most according to claim 1, it is characterised in that described substrate is installed
On described shell, described shell includes that support, described support are positioned at display module and the side of optical module
Portion.
11. pressure detection structures according to claim 1, it is characterised in that described shell includes
Shell on the back and the support being connected to described shell on the back edge, described shell on the back is positioned at the lower section of described optical module.
12. pressure detection structures according to claim 1, it is characterised in that
Described pressure transducer is positioned at lower glass or the surface of upper glass of described display module；Or,
Described pressure transducer is positioned at the surface of the optical module included by described display device.
13. pressure detection structures according to claim 12, it is characterised in that described pressure sensing
Device is positioned at the upper surface of the lower glass of described display module, or the upper surface of described upper glass, or institute
When stating the lower surface of glass, described pressure transducer is the drive electrode of the described display module of multiplexing.
14. according to the pressure detection structure described in claim 12 or 13, it is characterised in that described aobvious
The bucking electrode of shielding extraneous plane of reference impact is set in showing device；
Electric capacity between described pressure transducer and described bucking electrode is constant.
15. pressure detection structures according to claim 14, it is characterised in that described bucking electrode
Being positioned in described display device, described bucking electrode is the conduction on described pressure transducer position
Part.
16. 1 kinds of touch apparatus, including center and be arranged on the pressure detection structure on described center,
It is characterized in that, described pressure detection structure is as described in any one of claim 1-15.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620199781.6U CN205563517U (en) | 2016-03-15 | 2016-03-15 | Pressure detection structure and touch device |
| PCT/CN2016/103512 WO2017157014A1 (en) | 2016-03-15 | 2016-10-27 | Pressure detection structure and touch apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620199781.6U CN205563517U (en) | 2016-03-15 | 2016-03-15 | Pressure detection structure and touch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205563517U true CN205563517U (en) | 2016-09-07 |
Family
ID=56816839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620199781.6U Active CN205563517U (en) | 2016-03-15 | 2016-03-15 | Pressure detection structure and touch device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN205563517U (en) |
| WO (1) | WO2017157014A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106527809A (en) * | 2016-11-22 | 2017-03-22 | 厦门天马微电子有限公司 | Touch display panel and driving method thereof |
| CN106527791A (en) * | 2016-11-01 | 2017-03-22 | 上海天马微电子有限公司 | Display panel, integrated pressure induction display device and driving method |
| WO2017114045A1 (en) * | 2015-12-31 | 2017-07-06 | 深圳市汇顶科技股份有限公司 | Pressure measurement structure and touch device |
| WO2017113952A1 (en) * | 2015-12-31 | 2017-07-06 | 深圳市汇顶科技股份有限公司 | Pressure detecting structure and touch device |
| WO2017157014A1 (en) * | 2016-03-15 | 2017-09-21 | 深圳市汇顶科技股份有限公司 | Pressure detection structure and touch apparatus |
| CN109727532A (en) * | 2017-10-30 | 2019-05-07 | 京东方科技集团股份有限公司 | Flexible display screen and display device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1716045A (en) * | 2004-06-28 | 2006-01-04 | 鸿富锦精密工业（深圳）有限公司 | Module backlight and liquid crystal indicator |
| KR20150096104A (en) * | 2014-02-14 | 2015-08-24 | 한상호 | Display Device Having Tri-axis Sensing Type Capacitive Touch Screen |
| CN204759381U (en) * | 2015-07-20 | 2015-11-11 | 深圳市汇顶科技股份有限公司 | Touch -sensitive screen terminal with pressure detection function |
| CN105068695A (en) * | 2015-09-11 | 2015-11-18 | 京东方科技集团股份有限公司 | Touch display panel with pressure detection function, display device and driving method |
| CN105138183B (en) * | 2015-09-25 | 2019-05-03 | 敦泰电子有限公司 | A kind of electronic equipment with pressure detecting function |
| CN205563517U (en) * | 2016-03-15 | 2016-09-07 | 深圳市汇顶科技股份有限公司 | Pressure detection structure and touch device |
-
2016
- 2016-03-15 CN CN201620199781.6U patent/CN205563517U/en active Active
- 2016-10-27 WO PCT/CN2016/103512 patent/WO2017157014A1/en active Application Filing
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017114045A1 (en) * | 2015-12-31 | 2017-07-06 | 深圳市汇顶科技股份有限公司 | Pressure measurement structure and touch device |
| WO2017113952A1 (en) * | 2015-12-31 | 2017-07-06 | 深圳市汇顶科技股份有限公司 | Pressure detecting structure and touch device |
| WO2017157014A1 (en) * | 2016-03-15 | 2017-09-21 | 深圳市汇顶科技股份有限公司 | Pressure detection structure and touch apparatus |
| CN106527791A (en) * | 2016-11-01 | 2017-03-22 | 上海天马微电子有限公司 | Display panel, integrated pressure induction display device and driving method |
| CN106527791B (en) * | 2016-11-01 | 2019-06-25 | 上海天马微电子有限公司 | The display device and driving method that display panel, integrated pressure incude |
| CN106527809A (en) * | 2016-11-22 | 2017-03-22 | 厦门天马微电子有限公司 | Touch display panel and driving method thereof |
| CN106527809B (en) * | 2016-11-22 | 2019-08-02 | 厦门天马微电子有限公司 | A kind of touch-control display panel and its driving method |
| CN109727532A (en) * | 2017-10-30 | 2019-05-07 | 京东方科技集团股份有限公司 | Flexible display screen and display device |
| US11756457B2 (en) | 2017-10-30 | 2023-09-12 | Ordos Yuansheng Optoelectronics Co., Ltd. | Flexible display screen and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017157014A1 (en) | 2017-09-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205563517U (en) | Pressure detection structure and touch device | |
| CN205302239U (en) | Pressure detection structure and touch device | |
| CN205302238U (en) | Pressure detection structure and touch device | |
| CN207216224U (en) | Display device | |
| CN108681118B (en) | Liquid crystal display device with a light guide plate | |
| CN104106026B (en) | Display device, electronic equipment and touch panel | |
| CN102135845A (en) | Sensor element and display apparatus | |
| CN106155413B (en) | The driving method of touch control display apparatus and touch control display apparatus | |
| CN104566007B (en) | Display device | |
| CN103885631A (en) | Touch Display Device With Flexible Circuit Module | |
| KR20160085388A (en) | Display device | |
| CN1809800A (en) | Vibration sensing touch input device | |
| CN205384588U (en) | Pressure detection structure and touch device | |
| US9983342B2 (en) | Backlight structures for an electronic device with sensor circuitry | |
| CN204806078U (en) | Backlight unit and touch -sensitive display device | |
| CN103792729A (en) | Thin display module | |
| CN105334911A (en) | Electronic device | |
| CN111061090A (en) | Backlight module and display device | |
| CN109284026B (en) | Touch type display device and method for sensing touch | |
| CN105700738B (en) | Touch display screen and electronic equipment | |
| CN103401967B (en) | Mobile terminal and touch-screen thereof | |
| US7755596B2 (en) | Driving device with light sensor module and electronic device using the same | |
| CN106597749A (en) | Backlight module and electronic equipment | |
| CN205229993U (en) | Display device | |
| CN209625230U (en) | Fingerprint acquisition apparatus, touch window and touching device including it |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |