CN205158321U - Touch display device - Google Patents
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- CN205158321U CN205158321U CN201520906444.1U CN201520906444U CN205158321U CN 205158321 U CN205158321 U CN 205158321U CN 201520906444 U CN201520906444 U CN 201520906444U CN 205158321 U CN205158321 U CN 205158321U
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- Position Input By Displaying (AREA)
Abstract
The utility model relates to a touch display device, including protection apron, touch -sensitive unit and display element, the touch -sensitive unit is used for the response to exert the touch signal on the protection apron, and display element includes backlight unit, and backlight unit includes optics diaphragm and the protecting sheathing who is used for protecting the optics diaphragm, still including setting up the forced induction unit between optics diaphragm and protecting sheathing, the forced induction unit includes superstructure and infrastructure to touch display device, and superstructure and infrastructure all include the substrate, set up the electrode and the quick resistance layer of doing all can on the substrate, and the orthographic projection of electrode on the substrate among superstructure and the infrastructure has the intersection region, and the quick resistance layer of the power among superstructure and the infrastructure is adjacent and the interval sets up. The utility model discloses lieutenant general forced induction unit integrated is to the display element in, and this forced induction unit can detect multi -touch's pressure signal through setting up the quick resistance layer of power simultaneously to has the high advantage of the precision of detection.
Description
Technical field
The utility model relates to touch-control display field, particularly relates to a kind of touch display unit with pressure sensitive function.
Background technology
Touch-screen, because having the advantage such as ease for operation, dirigibility, has become primary human's interactive means of personal mobile communication equipment and integrate information terminal (as mobile phone, panel computer and super notebook computer etc.).Relative to the touch-screen of resistive touch screen and alternate manner, the advantages such as capacitive touch screen is low with cost, structure is simple and durable, are widely used by intelligent terminal gradually.But existing capacitance touch screen is the touch location of perception screen body place plane and operation only, be difficult to the pressure that perception puts on screen surface and change the touch parameter brought.
In order to sense the pressure change of screen surface, dealer is integrated pressure sensor in touch-screen.But existing way is difficult to the touch pressure Detection results obtaining high position precision, major part can only detect the touch pressure information of single-point simultaneously.
Utility model content
Based on this, the utility model aims to provide a kind ofly to be had high-precision pressure Detection results and can detect the touch display unit of multiple point touching pressure signal.
A kind of touch display unit, comprise cover sheet, touch sensing unit and display unit, described touch sensing unit is for responding to the touch signal put on cover sheet, described display unit comprises backlight module, described backlight module comprises blooming piece and the protecting sheathing for the protection of blooming piece, described touch display unit also comprises the pressure sensitive unit be arranged between blooming piece and protecting sheathing, described pressure sensitive unit comprises superstructure and understructure, described superstructure and understructure include base material, be arranged on the electrode on base material and force sensing resistance layer, the orthogonal projection of electrode on base material in described superstructure and understructure has intersection region, and the adjacent and interval of force sensing resistance layer in superstructure and understructure is arranged.
Wherein in an embodiment, between described superstructure and understructure, be provided with insulation spacer.
Wherein in an embodiment, described force sensing resistance layer is whole structure, and described insulation spacer is arranged between two force sensing resistance layers.
Wherein in an embodiment, described electrode is mutual independently list structure or block structure.
Wherein in an embodiment, the electrode pair of described superstructure and understructure should be arranged, and the shape of described force sensing resistance layer is answered to described electrode pair and covers corresponding electrode.
Wherein in an embodiment, described insulation spacer is arranged between two base materials.
Wherein in an embodiment, described insulation spacer is point-like, wire or irregularly shaped.
Wherein in an embodiment, described force sensing resistance layer comprises insulating body and is dispersed in the conductive particle in insulating body.
Wherein in an embodiment, between described pressure sensitive unit and the blooming piece of backlight module, there is space.
Wherein in an embodiment, in described space, fill a resiliency compressible layer.
Pressure sensitive unit is integrated in display unit by above-mentioned touch display unit, and this pressure sensitive unit is by arranging force sensing resistance layer simultaneously, can detect the pressure signal of multiple point touching, and has the high advantage of accuracy of detection.
Accompanying drawing explanation
The structural representation of the touch display unit that Fig. 1 provides for the utility model one embodiment.
Display unit in the touch display unit that Fig. 2 provides for the utility model one embodiment and the structural representation of pressure sensitive unit.
The structural representation of the pressure sensitive unit in the touch display unit that Fig. 3 provides for the utility model one embodiment.
Fig. 4 and Fig. 5 is different layers electrode structure schematic diagram in the unit of pressure sensitive shown in Fig. 3.
The structural representation of the pressure sensitive unit in the touch display unit that Fig. 6 provides for another embodiment of the utility model.
Fig. 7 is the Rotating fields schematic diagram in the unit of pressure sensitive shown in Fig. 6.
Embodiment
The touch display unit that the utility model provides can as the display terminal with touch interactive form of the type such as mobile phone, panel computer.
As shown in Figures 1 and 2, the touch display unit that the utility model one embodiment provides comprises cover sheet 10, touch sensing unit 20, display unit 30 and pressure sensitive unit 70.Cover sheet 10, touch sensing unit 20 and display unit 30 set gradually, and pressure sensitive unit 70 is arranged in display unit 30.
Touch sensing unit 20 comprises touch drive electrode and touch sensible electrode.Touching drive electrode and touch sensible electrode can be distributed on same base material, such as, GF structure alleged by industry, GF2 structure etc., or is distributed in two different base materials respectively, such as, GFF structure alleged by industry.In some embodiments in addition, touch drive electrode and touch sensible electrode also can be formed in the lower surface of cover sheet 10 and make cover sheet 10 have the function of capacitive transducer concurrently, and this kind of structure is called OGS structure by industry.The utility model alleged " on ", D score is for the degree close with user in application process relative to touch display unit, relatively near the side of user be " on ", the side relatively away from user is D score.The lower surface of such as cover sheet refers to the side of cover sheet away from user.In some embodiments in addition, a kind of surface that also can be formed in the substrate fitting in cover sheet 10 in these two kinds of touch control electrode, such as, G1F structure alleged by industry.
Described display unit 30 comprises liquid crystal functional layer 50 and backlight module 60; described liquid crystal functional layer 50 comprises the upper polaroid 51, optical filter 52, liquid crystal layer 53, substrate 54 and the lower polaroid 55 that set gradually, and described backlight module 60 comprises blooming piece and the protecting sheathing 64 for the protection of blooming piece.Blooming piece can comprise the structures such as diffusion sheet 61, light guide plate 62 and the reflector plate 63 set gradually.
In some embodiments in addition, touch drive electrode in touch sensing unit 20 and touch sensible electrode also can be integrated and be arranged in liquid crystal layer 53 (structure of above-mentioned touch sensing unit is called in-cell structure by industry), or described touch drive electrode and touch sensible electrode are arranged on (structure of above-mentioned touch sensing unit is called on-cell structure by industry) between polaroid 51 and optical filter 52.
Described touch drive electrode and touch sensible electrode are for responding to the touch signal put on cover sheet 10.Described touch signal comprises contact on the two-dimensional directional being parallel to cover sheet 10, slide, to pull etc. and touch input signal, even comprises the touch input signal perpendicular to the side (such as bending arc-shaped side edges of shielding) every empty input signal (i.e. suspension touch control signal) or cover sheet 10 edge on cover sheet 10 direction.
Described pressure sensitive unit 70 is arranged in display unit 30, for responding to the pressure signal put on cover sheet 10.Particularly, pressure sensitive unit 70 is between blooming piece and protecting sheathing 64.As pressure sensitive unit 70 is pasted on the surface of protecting sheathing 64, there is space 65 with the blooming piece of backlight module 60 in protecting sheathing 64.Be the distance accurately controlling blooming piece in backlight module 60 and pressure sensitive unit 70 in some embodiments, i.e. the thickness in space 65, by the edge designs ledge structure at protecting sheathing 64, as shown in Figure 2.
In some embodiments, in order to the impact of sensing unit on the function of display unit that ease off the pressure, in the space 65 between described pressure sensitive unit 70 and blooming piece (being specially reflector plate 63), resiliency compressible layer (not shown) can be provided with.Described resiliency compressible layer can be made up of bubble silk floss, sponge, Bio-sil and other porous film material.Described pressure sensitive unit 70 is bonded on protecting sheathing 64 by glue or solid gum, and between resiliency compressible layer and protecting sheathing 64.
As shown in Fig. 3, Fig. 4 and Fig. 5, described pressure sensitive unit 70 comprises superstructure, understructure and the air layer between levels structure, and superstructure and understructure include base material and be arranged on the electrode on base material.Wherein, the distribution of electrodes in superstructure and understructure is on two adjacent surfaces of two base materials.Particularly, described superstructure comprises base material 71 and is formed in the electrode 710 of base material 71 lower surface.Because pressure sensitive unit 70 is arranged between the protecting sheathing 64 of display unit 60 and reflector plate 63, without the need to printing opacity design, therefore base material 71 can be made up of transparent or nontransparent material.Electrode 710 can adopt the mode such as silk-screen, deposition/etching to be produced on base material 71.Understructure comprises base material 72 and is formed in the electrode 720 of base material 72 upper surface.The production method of electrode 720 can be identical with the production method of electrode 710.Electrode 710 has different bearing of trend from electrode 720, and when two base materials 71,72 dock, the orthogonal projection of electrode 710,720 on base material has intersection region.
Described superstructure also comprises the force sensing resistance layer 73 be arranged on electrode 710.Described understructure also comprises setting force sensing resistance layer 74 on electrode 720.In the embodiment shown in Fig. 3, base material 71 and electrode 710 form the force sensing resistance layer 73 of whole, base material 72 and electrode 720 are formed the force sensing resistance layer 74 of whole.The superstructure of pressure sensitive unit 70 and understructure are when combining, and centre exists air layer.In order to exert all one's strength, quick resistive layer 73,74 can maintain a certain distance, and makes the insulation spacer 75 that distributes in air layer in this embodiment.Described insulation spacer 75 can be point-like, wire or other irregular shape.Described insulation spacer 75 is made up of insulating resin, glue, rubber or silica gel etc., and concrete generation type can be silk-screen, mode such as some glue, spraying etc.The implementation that insulation spacer 75 is concrete is, silk-screen UV constrictive type insulation isolating points glue site glue on force sensing resistance layer, then irradiate solidification through UV, the principal ingredient of site glue is acroleic acid polyurethane material.
Be appreciated that in above-mentioned embodiment, force sensing resistance layer 73,74 also can be non-whole design, i.e. the subregion of force sensing resistance layer 73,74 covering substrates 71,72 and electrode 710,720, as only covered the overlapping intersection region of electrode 710 and 720.When force sensing resistance layer 73,74 is non-whole design, aforesaid insulation spacer 75, except the top that can be distributed in force sensing resistance layer 73,74, also can directly be distributed on base material 71 or base material 72.
Being appreciated that the shape of electrode 710,720 is not limited to the strip shaped electric poles shown in Fig. 4 and Fig. 5, can also be the shapes such as separate block type electrode.
The structural representation of the pressure sensitive unit in the touch display unit that Fig. 6 provides for another embodiment.Fig. 7 is the structural representation of the different layers in the unit of pressure sensitive shown in Fig. 6, and the same with embodiment shown in Fig. 3-Fig. 5, the superstructure of the pressure sensitive unit in this embodiment still has identical structure with understructure.As shown in Figure 6, Figure 7, in this pressure sensitive unit, superstructure comprises base material 71, and the electrode 710 be arranged on base material 71 and force sensing resistance layer 73, and understructure comprises base material 72, and the electrode 720 arranged on the substrate 72 and force sensing resistance layer 74.Electrode 710 and electrode 720 are separate bulk, and simultaneously force sensing resistance layer 73,74 has and electrode 710,720 corresponding shapes, and coated electrode 710,720.Due to superstructure and understructure combine time, force sensing resistance layer 73,74 adopts face-to-face assembling, and therefore barish electrode circuit adopts dielectric ink to cover to avoid between levels by the direct conducting of electrode circuit.In the embodiment shown in fig. 6, in order to exert all one's strength, quick resistive layer 73,74 can maintain a certain distance, distribute in air layer between superstructure and understructure the insulation spacer 75 be made up of insulating resin, glue, rubber or silica gel etc., and described insulation spacer 75 can be point-like, wire or other irregular shape.In Fig. 6, insulation spacer 75 is directly distributed on base material 71,72.
In above-mentioned embodiment, force sensing resistance layer is made up of quantum tunneling compound substance, can for mixing the pressure sensitive composite material of conductive particle.Fine conductive even particulate dispersion in force sensing resistance layer is in insulating body.Insulating body can be made for materials such as dacron, epoxy resin, polyester, organosilicon, rubber.Conductive particle can be metallic particles, and as nickel, silver, copper powder or metal alloy particle, can be also carbon black, graphite, can also be carbon nano-tube, also can be that conductive oxide is as tin indium oxide, indium oxide, tin oxide, zinc paste, titanium dioxide etc.Conductive particle is of a size of 10nm-100 μm.Described force sensing resistance layer can pass through the modes such as silk-screen, inkjet printing, coating by quick for power printing ink to manufacture on described base material and electrode.Wherein the quick ink of power is formed by modulation such as foregoing insulating body, conductive particle, solvent, hardening agent, and realizes solidification by the mode be heating and curing or UV irradiates.
The pressure detection principle of above-mentioned pressure sensitive unit is described below in conjunction with the structure shown in Fig. 3.The detection of the signal of described pressure sensitive unit can be realized by the resistance signal between the electrod-array that detects superstructure and understructure.The contact resistance of the force sensing resistance layer of levels structure can reduce along with the stressed increase of touch display unit, and respective force sensing resistance layer reduces along with stressed increase due to its resistance that affects of quantum tunneling effect.When touch display unit is not touched, there is insulation spacer 75 owing to existing in air layer or air layer between force sensing resistance layer 73,74, resistance value measured between the electrode 710 of superstructure and the electrode 720 of understructure is infinitely great.When touch display unit be subject to user touch pressing time, first be that in backlight module 60, blooming piece is close with pressure sensitive unit 70 gradually, then the distance between force sensing resistance layer 73,74 reduces, and when touching pressing and reaching certain value, force sensing resistance layer 73,74 contacts with each other, along with the dynamics of user's touch pressure increases gradually, the area that force sensing resistance layer 73,74 contacts with each other also increases gradually, and corresponding reduction occurs the resistance between the electrode 710 of corresponding superstructure and the electrode 720 of understructure.When user's touch pressure increases to a certain degree, the distance of the conductive particle in force sensing resistance layer 73,74 also can occur reducing along with the increase of the power applied, due to quantum tunneling effect, electron transfer capabilities between conductive particle strengthens, thus is macroscopically being presented as that the resistance value of force sensing resistance layer 73,74 reduces.Along with the increase that force sensing resistance layer 73,74 is stressed, the resistance value between coupled electrode reduces gradually.Therefore, the mutual relationship database by force information of electrode resistance change information in touch display unit in aforesaid pressure sensitive unit and touch display unit can be set up.In actual applications, storer and processor is also comprised in described touch display unit, under the diverse location stored in storer in touch display unit carries out different force value touches, the resistance variations information of each adjacent electrode of detect force in touch display unit, processor detects for contrasting touch display unit the resistance variations information of adjacent electrode and the resistance variations information of institute's pre-stored that obtain, thus judges the touch information of touch display unit.Wherein touch information comprises the size of the power of touch, also can comprise the position of touch force.
In addition, the detection of the signal of described pressure sensitive unit also can be realized by the capacitance signal between the electrod-array that detects superstructure and understructure.When detection signal is capacitance signal, the insulation spacer between described superstructure and understructure can be whole or local complexity force sensing resistance layer.Insulation spacer can be adhesive, gluing film, dielectric ink etc.Comprise insulating body due to force sensing resistance layer and be dispersed in the conductive particle in insulating body.When the surface of touch display unit is stressed, force sensing resistance layer reduces along with stressed increase due to its resistance that affects of quantum tunneling effect, the specific inductive capacity of the force sensing resistance layer now in pressure sensitive unit can change, and the capacitance signal between the superstructure of pressure sensitive unit and the electrod-array of understructure can change.Therefore, the stressing conditions of pressure sensitive unit can be judged according to different capacitance change signal, the touch pressure information of final judgment means.
In one embodiment, time in running order while of described touch sensing unit and pressure sensitive unit, if touch sensing unit and pressure sensitive unit inspection are to touch operation event, described touch display unit utilizes described touch sensing unit identification touch operation position, and described touch display unit utilizes described pressure sensitive unit identification touch operation pressure; If described touch sensing unit touch operation event do not detected and described pressure sensitive unit inspection to touch operation event time, described touch display unit utilizes described pressure sensitive unit identification touch operation position and touch operation pressure.
Pressure sensitive unit is integrated in display unit by the utility model, and this pressure sensitive unit is by arranging force sensing resistance layer simultaneously, can detect the pressure signal of multiple point touching, and has the high advantage of accuracy of detection.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this instructions is recorded.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (10)
1. a touch display unit, comprise cover sheet, touch sensing unit and display unit, described touch sensing unit is for responding to the touch signal put on cover sheet, described display unit comprises backlight module, described backlight module comprises blooming piece and the protecting sheathing for the protection of blooming piece, it is characterized in that, described touch display unit also comprises the pressure sensitive unit be arranged between blooming piece and protecting sheathing, described pressure sensitive unit comprises superstructure and understructure, described superstructure and understructure include base material, be arranged on the electrode on base material and force sensing resistance layer, the orthogonal projection of electrode on base material in described superstructure and understructure has intersection region, and the adjacent and interval of force sensing resistance layer in superstructure and understructure is arranged.
2. touch display unit according to claim 1, is characterized in that, is provided with insulation spacer between described superstructure and understructure.
3. touch display unit according to claim 2, is characterized in that, described force sensing resistance layer is whole structure, and described insulation spacer is arranged between two force sensing resistance layers.
4. touch display unit according to claim 3, is characterized in that, described electrode is mutual independently list structure or block structure.
5. touch display unit according to claim 2, is characterized in that, the electrode pair of described superstructure and understructure should be arranged, and the shape of described force sensing resistance layer is answered to described electrode pair and covers corresponding electrode.
6. touch display unit according to claim 5, is characterized in that, described insulation spacer is arranged between two base materials.
7. touch display unit according to claim 2, is characterized in that, described insulation spacer is point-like, wire or irregularly shaped.
8. touch display unit according to claim 1, is characterized in that, described force sensing resistance layer comprises insulating body and is dispersed in the conductive particle in insulating body.
9. according to the touch display unit in claim 1-8 item described in any one, it is characterized in that there is space between described pressure sensitive unit and the blooming piece of backlight module.
10. touch display unit according to claim 9, is characterized in that, fills a resiliency compressible layer in described space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520906444.1U CN205158321U (en) | 2015-11-13 | 2015-11-13 | Touch display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520906444.1U CN205158321U (en) | 2015-11-13 | 2015-11-13 | Touch display device |
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| CN205158321U true CN205158321U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520906444.1U Expired - Fee Related CN205158321U (en) | 2015-11-13 | 2015-11-13 | Touch display device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106354334A (en) * | 2016-10-08 | 2017-01-25 | 南昌欧菲光科技有限公司 | Touch display device |
| CN107491201A (en) * | 2016-06-10 | 2017-12-19 | 三星显示有限公司 | Sensor and the display device with the sensor |
| CN107562245A (en) * | 2016-07-01 | 2018-01-09 | 南昌欧菲光科技有限公司 | Touch display unit and electronic equipment |
| CN107621911A (en) * | 2016-07-16 | 2018-01-23 | 南昌欧菲光科技有限公司 | Touch display unit |
| CN111813279A (en) * | 2020-07-13 | 2020-10-23 | 深圳市鸿合创新信息技术有限责任公司 | Touch control device |
-
2015
- 2015-11-13 CN CN201520906444.1U patent/CN205158321U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107491201A (en) * | 2016-06-10 | 2017-12-19 | 三星显示有限公司 | Sensor and the display device with the sensor |
| CN107491201B (en) * | 2016-06-10 | 2023-03-10 | 三星显示有限公司 | Sensor and display device having the same |
| CN107562245A (en) * | 2016-07-01 | 2018-01-09 | 南昌欧菲光科技有限公司 | Touch display unit and electronic equipment |
| CN107621911A (en) * | 2016-07-16 | 2018-01-23 | 南昌欧菲光科技有限公司 | Touch display unit |
| CN106354334A (en) * | 2016-10-08 | 2017-01-25 | 南昌欧菲光科技有限公司 | Touch display device |
| CN111813279A (en) * | 2020-07-13 | 2020-10-23 | 深圳市鸿合创新信息技术有限责任公司 | Touch control device |
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Granted publication date: 20160413 Termination date: 20181113 |