CN203070262U - Device integrating 3D grating and capacitive touch screen and displaying device including same - Google Patents
Device integrating 3D grating and capacitive touch screen and displaying device including same Download PDFInfo
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- CN203070262U CN203070262U CN 201220582388 CN201220582388U CN203070262U CN 203070262 U CN203070262 U CN 203070262U CN 201220582388 CN201220582388 CN 201220582388 CN 201220582388 U CN201220582388 U CN 201220582388U CN 203070262 U CN203070262 U CN 203070262U
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Abstract
The utility model provides a device integrating a 3D grating and a capacitive touch screen and a displaying device including the device, and belongs to the technical field of three-dimensional (3D) image display. The integrating device at least comprises a first transparent electrode substrate, a liquid crystal layer, a second transparent electrode substrate and a first polaroid layer all of which are sequentially arranged from bottom to top of the integrating device. A first electrode is arranged on one side, opposite to the liquid crystal layer, of the first transparent electrode substrate so as to form a lower electrode of a liquid crystal cell of the 3D grating. A second electrode is arranged on one side, opposite to the liquid crystal layer, of the second transparent electrode substrate so as to form an upper electrode of the liquid crystal cell of the 3D grating, and a third electrode used for forming a capacitive touch screen electrode is arranged on one side, opposite to the first polaroid layer, of the second transparent electrode substrate. The integrating device not only has the displaying function of naked-eye 3D images, but also has the function of touch input. The integrating device is simple in structure, small in thickness, high in light transmittance and low in manufacturing cost, and can be integrated with a two-dimensional image displaying module easily.
Description
Technical field
The utility model belongs to three-dimensional (3D) image display technology field, relates in particular to the device of a kind of integrated 3D grating and capacitance touch screen and the display device that comprises this touch-screen.
Background technology
Three-dimensional (3D) image display device can be divided into two big classes substantially: glasses type stereoscopic display device and glasses-free type (bore hole) stereoscopic display device (automatic display device of stereoscopic image).Wherein used polarising glass, shutter glasses and red blue glasses etc. in the glasses type stereoscopic display device, the existence of glasses can cause the beholder to feel inconvenient and may cause ophthalmology disease.And glasses-free type stereoscopic display device only just can be appreciated stereo-picture by the direct viewing screen, therefore, currently furthers investigate over against glasses-free type stereoscopic display device.
The 3 D image display method of glasses-free type stereoscopic display device includes lens method, holographic method and parallax barrier method etc.Wherein lens method and parallax barrier method realize that by the 3D grating 3D shows, wherein can use lenticular sheet in the lens method, can use parallax barrier (being also referred to as the disparity barrier fence) in the parallax barrier method, the application of these two kinds of 3D gratings of lenticular sheet and parallax barrier in 3D shows, respectively has corresponding technological merit, therefore, in its field that is suitable for mutually, use respectively.
Notice that simultaneously lenticular sheet and parallax barrier head can form by liquid crystal cell, namely form liquid crystal lenticular sheet and liquid crystal parallax barrier respectively.Figure 1 shows that the simple structure synoptic diagram of the stereoscopic display device of conventional use 3D grating.Stereoscopic display device comprises two dimensional image display module 10 and 3D grating 20, backlightly enters from two dimensional image display module 10, through entering observer's eyes behind the 3D grating 20.In the 3D grating 20, it can be liquid crystal lenticular sheet and liquid crystal parallax barrier.Wherein, the liquid crystal parallax barrier is to reverse realization to blocking from the light of two dimensional image display module 10 by liquid crystal; The liquid crystal lenticular sheet is utilized the birefringent characteristic of liquid crystal, a kind of method is in the relevant position of a liquid crystal lens of needs formation a plurality of electrodes to be set, when these electrodes were added different control voltage, the liquid crystal of this position formed the convergence effect be similar to the entity lens pillar (be the patented technology of US5493427 referring to U.S. Patent number) in optical characteristics.In example shown in Figure 1,3D grating 20 comprises the following polaroid 210 that sets gradually from bottom to top, following transparent electrode layer 220, liquid crystal (LC) layer 230, goes up transparent electrode layer 240 and go up polaroid 250.Normally, following transparent electrode layer 220, last transparent electrode layer 240 are by ITO(Indium Tin Oxide, indium tin metal oxide) conductive glass layer, on following transparent electrode layer 220 and the last transparent electrode layer 240 at the ITO electrode that is formed with certain pattern in opposite directions in the surface of liquid crystal layer 230 respectively (for example, the ITO electrode pattern that is used to form parallax barrier as shown in Figure 1), form parallax barrier or liquid crystal lenticular sheet by can control liquid crystal to the control of ITO electrode.
Notice touch-screen widespread use in various individual mobile display devices simultaneously.In the touch-screen, according to principle of work, mainly can be divided into resistive touch screen and capacitance touch screen.Further capacitance touch screen mainly comprises self-capacitance touch-screen (self-capacitive touch panel) and mutual capacitance touchscreens (mutual capacitive touch panel).
In the self-capacitance touch-screen, (glass substrate or polyester material are (for example at its transparent electrode substrate, PET(ethylene terephthalate, polyethylene terephthalate)) surface substrate), adopt ITO (Indium Tin Oxide, the indium tin metal oxide) transparent conductive material of etc.ing to be made into horizontal and longitudinal electrode array, these horizontal and vertical electrodes can be used for forming electric capacity, this electric capacity is usually said self-capacitance, just electrode electric capacity over the ground.When finger touch when the capacitance plate, the electric capacity of finger will be added on the self-capacitance, and the touch-screen electric capacity is increased.The control circuit of self-capacitance touch-screen detects touch location by the variation of measuring capacitive load.
In the mutual capacitance screen, on the surface of its transparent electrode substrate, adopt ITO transparent conductive materials such as (Indium Tin Oxide, indium tin metal oxides) to be made into laterally and the longitudinal electrode array; The difference that it and self-capacitance shield is that the place that longitudinal electrode and transverse electrode intersect will form mutual capacitance, also is the two poles of the earth that longitudinal electrode and corresponding transverse electrode have constituted electric capacity respectively.When finger touch arrives capacitance plate, influenced the coupling between near two electrodes in touch point, thereby changed the electric capacity between these two electrodes.When detecting the mutual capacitance size, in one example, horizontal electrode sends pumping signal successively, and all electrodes receive signal simultaneously longitudinally, can obtain the capacitance size of all horizontal and vertical electrode joints like this, namely obtain the capacitance size of the two dimensional surface of whole touch screen.According to the variation of the electric capacity data of two dimensional surface in the touch-screen scope, can calculate the coordinate of each touch point.
Yet, when 3D grating 20 is applied to have the individual mobile display device of capacitive touch screen, for example, touch-screen mobile phone etc., if directly cover 3D grating 20 to reach the stereo-picture display effect at touch-screen, so because the existence of 3D grating 20 will cause the disabler of the touch input information of touch-screen.
In view of this, at the requirement that requires to have touch-input function and stereo-picture Presentation Function simultaneously, especially to capacitance touch screen, be necessary to capacitance touch screen and 3D grating integrating.
The utility model content
Purpose to be solved in the utility model is, at low cost 3D grating and capacitance touch screen integrating is in the same place.
For realizing above purpose or other purposes, the utility model provides following technical scheme.
According to one side of the present utility model, the device of a kind of integrated 3D grating and capacitance touch screen is provided, comprise at least setting gradually from the bottom to top:
First transparent electrode substrate,
Liquid crystal layer,
Second transparent electrode substrate, and
First layer of polarizer;
Wherein, described first transparent electrode substrate is arranging first electrode with the bottom electrode of the liquid crystal cell that forms described 3D grating in the one side of described liquid crystal layer in opposite directions, and described second transparent electrode substrate is arranging second electrode with the top electrode of the liquid crystal cell that forms described 3D grating in the one side of described liquid crystal layer in opposite directions; Described second transparent electrode substrate is at the third electrode that also is provided for forming the capacitance touch screen electrode in opposite directions in the one side of described first layer of polarizer.
According to the integrated 3D grating of the utility model one embodiment and the device of capacitance touch screen, wherein, described capacitance touch screen is the self-capacitance touch-screen, and described third electrode is used to form the self-capacitance touch screen electrode.
According to the utility model also integrated 3D grating of an embodiment and the device of capacitance touch screen, wherein, described capacitance touch screen is mutual capacitance touchscreens, and described third electrode is used to form the mutual capacitance touchscreens electrode.
In the device of the integrated 3D grating of described arbitrary embodiment before and capacitance touch screen, described third electrode can be the one-dimensional electrodes of non-bridge connected.
In the device of the integrated 3D grating of described arbitrary embodiment before and capacitance touch screen, the thickness range of described first layer of polarizer can be 0.1 millimeter to 3 millimeters.
In the device of the integrated 3D grating of described arbitrary embodiment before and capacitance touch screen, described 3D grating is liquid crystal parallax barrier or liquid crystal lenticular sheet.
According to another aspect of the present utility model, a kind of display device is provided, its comprise at least two dimensional image display module and the above and any integrated 3D grating and the device of capacitance touch screen, the device of described integrated 3D grating and capacitance touch screen places on the described two dimensional image display module.
Display device according to the utility model one embodiment, wherein, described two dimensional image display module is Thin Film Transistor-LCD, and layer of polarizer is simultaneously as the following layer of polarizer of the 3D grating of the device of described integrated 3D grating and capacitance touch screen in the described Thin Film Transistor-LCD.
Display device according to the another embodiment of the utility model, wherein, described two dimensional image display module is plasma display or organic light emitting diode display, the device of described integrated 3D grating and capacitance touch screen also comprises second layer of polarizer that places under described first transparent electrode substrate, described first layer of polarizer is used to form the last layer of polarizer of described 3D grating, and described second layer of polarizer is used to form the following layer of polarizer of described 3D grating.
Technique effect of the present utility model is, by on second transparent electrode substrate of the top electrode of the liquid crystal cell that is used to form the 3D grating, be formed for forming the third electrode of capacitance touch screen electrode, like this, can realize the good integration of the electric capacity of 3D grating (such as liquid crystal parallax barrier or liquid crystal lenticular sheet) and capacitance touch screen, make this integrating device both have bore hole 3D Presentation Function, the function that also has the touch-control input, and, can only realize by two-layer transparent electrode substrate, it is simple in structure, thickness is little, the transmittance height, preparation cost is low, is easy to integrate with the assembling of two dimensional image display module.
Description of drawings
From following detailed description by reference to the accompanying drawings, will make above-mentioned and other purposes of the present utility model and advantage clear more fully, wherein, same or analogous key element adopts identical label to represent.
Fig. 1 is the simple structure synoptic diagram of the stereoscopic display device of conventional use 3D grating.
Fig. 2 is the cross section structure synoptic diagram of the integrating device 30 according to the utility model one embodiment when being applied to the two dimensional image display module.
Embodiment
What introduce below is a plurality of some in may embodiment of the present utility model, aims to provide basic understanding of the present utility model, is not intended to confirm key of the present utility model or conclusive key element or limits claimed scope.Understand easily, according to the technical solution of the utility model, do not changing under the connotation of the present utility model, but one of ordinary skill in the art can propose other implementations of mutual alternative.Therefore, following embodiment and accompanying drawing only are the exemplary illustrations to the technical solution of the utility model, and should not be considered as of the present utility model all or be considered as restriction or restriction to technical solutions of the utility model.
In the drawings, for the clear thickness that has amplified layer and zone, but should not be considered to the proportionate relationship that strictness has reflected physical dimension as synoptic diagram.
In the drawings, for outstanding main layer of the present utility model, do not comprise some less important layers, such as the OCA(Optically Clear Adhesive that is used between layer and the layer pasting, optical lens gelatin) layer.
In the utility model, display plane with the two dimensional image display module is defined as the xy plane, the z coordinate is perpendicular to the xy plane, direction from the two dimensional image display module to the observer (be generally the two dimensional image display module and penetrate light to the direction of observer's eyes) is defined as z coordinate positive dirction, wherein, the orientation term of mentioning in the utility model such as upper and lower is to define with respect to the z coordinate of anticipating shown in the accompanying drawing.But they are relative concepts, and it can place orientation difference, observer's orientation variation and correspondingly variation according to the use of display device.
Figure 2 shows that the cross section structure synoptic diagram when integrating device 30 according to the utility model one embodiment is applied to the two dimensional image display module.In this embodiment, this integrating device is the device 30 of integrated 3D grating and self-capacitance touch-screen, and when this device 30 was fitted in two dimensional image display module 100, integral body can form the stereoscopic display device with touch screen function.
Continue to consult Fig. 2, the device of integrated 3D grating and self-capacitance touch-screen comprises from the bottom to top an ITO conductive glass layer 310, liquid crystal layer 320, the 2nd ITO conductive glass layer 330 and the layer of polarizer 390 that (i.e. the positive dirction of the z axle among the figure) stacks gradually.Wherein, the one ITO conductive glass layer 310 and/or the 2nd ITO conductive glass layer 330 have insulation characterisitic, the one ITO conductive glass layer 310, liquid crystal layer 320, the 2nd ITO conductive glass layer 330 can form the major part (also being liquid crystal cell) of 3D grating, simultaneously, in this embodiment, the 2nd ITO conductive glass layer 330 can also be used to form the major part of capacitance touch screen.Need to prove, more than may also be provided with other specific function layer between each layer, for example, be used for bonding transparent glue-line or structure firmware between each layer, but this does not constitute to restriction of the present utility model.
Particularly, in opposite directions on the one side of liquid crystal layer 320, composition forms ITO electrode 311 at an ITO conductive glass layer 310, and ITO electrode 311 is as the bottom electrode of liquid crystal layer 320.Equally, in opposite directions on the one side of liquid crystal layer 320, composition forms ITO electrode 331 at the 2nd ITO conductive glass layer 330, and ITO electrode 331 is as the top electrode of liquid crystal layer 320.Specifically arranging etc. between ITO electrode 311, liquid crystal layer 320, the ITO electrode 331 understood by those skilled in the art, no longer specifically describes at this.Should be understood that, those skilled in the art can relative set ITO electrode 311 and/or the shape of ITO electrode 331, make this liquid crystal cell can be used for forming liquid crystal parallax barrier or liquid crystal lenticular sheet, for example, U.S. Patent number is that US5493427, name are called and disclose the mode that ITO electrode and corresponding component formed or controlled the liquid crystal lenticular sheet that arranges in the patent of " Three-Dimensional Display Unit With a Variable Lens ".
Be example with the liquid crystal parallax barrier that forms in the 3D grating, after rectilinearly polarized light (layer of polarizer 390 produces) is vertically injected liquid crystal layer, its polarization direction can be turned round by liquid crystal and turn 90 degrees, therefore, the liquid crystal cell that the one ITO conductive glass layer 310, liquid crystal layer 320 and the 2nd ITO conductive glass layer 336 are formed can shading in parallel polarization sheet direction, thereby can show fence.
Further, particularly, on one deck conductive glass layer, i.e. on the one side on the 2nd ITO conductive glass layer 330, back on liquid crystal layer 320 (namely in opposite directions on the one side of layer of polarizer 390), composition is formed with ITO electrode 341.ITO electrode 341 is used to form the electrode layer of capacitance touch screen, the concrete structure of ITO electrode 341 and pattern setting, according to specific implementation principle and concrete needs, carry out corresponding specific design, for example, ITO electrode 341 can be used for forming the self-capacitance touch-screen, also can be used for forming mutual capacitance touchscreens.
In an another interchangeable embodiment of ITO electrode 341, the application people is that submit on April 20th, 2010 for FocalTech Systems Co., Ltd., name be called " self-capacitance touch-screen and coordinate data processing method thereof that one-dimensional electrodes is set ", Chinese patent application number is to have described the concrete structure of electrode 341 in 201010170919.7 the patent, the whole contents of this application (201010170919.7) is included in this with way of reference.When ITO electrode 341 adopts the described structure of above-mentioned application, do not need insulating medium layer in the ITO electrode 341, and in the structure shown in Figure 3, insulating medium layer may be formed in bridge architecture 341c and under the situation of not using screen layer, the noiseproof feature of electric capacity is good.Therefore, the ITO electrode of this embodiment can be defined as non-bridge connected one-dimensional electrodes, and ITO electrode 341 can be used for forming self-capacitance or mutual capacitance.
Continue to consult Fig. 2, layer of polarizer 390 places the top of this device 30, and it can be used to form the last layer of polarizer of parallax barrier.Preferably, for the sensitivity that guarantees to touch, for example, the electric capacity of finger is added on the self-capacitance easily, and the thickness of layer of polarizer 390 can be arranged in the scope of 0.1mm to 3mm.
Therefore, when placing the device 30 of integrated 3D grating and capacitance touch screen on the two dimensional image display module 100, formed the stereoscopic display device of the utility model one embodiment, this stereoscopic display device also has touch-input function simultaneously.In this integrating device 30, the 2nd ITO conductive glass layer 330 that is used to form liquid crystal cell is used for preparing formation electric capacity simultaneously, after the electrode characteristics of analysis electric capacity and the electrode characteristics of liquid crystal cell, dexterously ITO electrode 331 and 341 is formed on the two sides of same ITO conductive glass layer 330, with respect to the simple combination of 3D grating and capacitance touch screen, can reduce two-layer conductive glass layer at least, and, the integrated degree height, simple in structure, thickness is little, preparation cost is low.
Continue as shown in Figure 2, in this display device, two dimensional image display module 100 can be the TFT-LCD display, these displays self have layer of polarizer, therefore, layer of polarizer in this two dimension display module 100 is used as the following layer of polarizer of parallax barrier simultaneously in stereoscopic display device shown in Figure 2, integrating device 30 does not need layer of polarizer down.In other embodiments, when two dimensional image display module 100 for not with the display of layer of polarizer the time, for example, plasma display, OLED(Organic Light-Emitting Diode, Organic Light Emitting Diode) display, can also between two dimensional image display module 100 and an ITO conductive glass layer 310 layer of polarizer be set, this layer of polarizer is as the following layer of polarizer of 3D grating.
Above example has mainly illustrated the device of integrated 3D grating of the present utility model and capacitance touch screen, although only some of them embodiment of the present utility model is described, but those of ordinary skills should understand, and the utility model can be in not departing from its purport and scope be implemented with many other forms.Therefore, the example of showing and embodiment are regarded as illustrative and not restrictive, and under situation about not breaking away from as the defined the utility model spirit of appended each claim and scope, the utility model may be contained various modifications and replacement.
Claims (9)
1. the device of an integrated 3D grating and capacitance touch screen comprises setting gradually from the bottom to top at least:
First transparent electrode substrate,
Liquid crystal layer,
Second transparent electrode substrate, and
First layer of polarizer;
Wherein, described first transparent electrode substrate is arranging first electrode with the bottom electrode of the liquid crystal cell that forms described 3D grating in the one side of described liquid crystal layer in opposite directions, second electrode is set with the top electrode of the liquid crystal cell that forms described 3D grating in the one side of described liquid crystal layer in opposite directions at described second transparent electrode substrate; The third electrode that on the one side of described first layer of polarizer, also is provided for forming the capacitance touch screen electrode in opposite directions at described second transparent electrode substrate.
2. device as claimed in claim 1 is characterized in that, described capacitance touch screen is the self-capacitance touch-screen, and described third electrode is used to form the self-capacitance touch screen electrode.
3. device as claimed in claim 1 is characterized in that, described capacitance touch screen is mutual capacitance touchscreens, and described third electrode is used to form the mutual capacitance touchscreens electrode.
4. as claim 2 or 3 described devices, it is characterized in that described third electrode is the one-dimensional electrodes of non-bridge connected.
5. device as claimed in claim 1 is characterized in that, the thickness range of described first layer of polarizer is 0.1 millimeter to 3 millimeters.
6. device as claimed in claim 1 is characterized in that, described 3D grating is liquid crystal parallax barrier or liquid crystal lenticular sheet.
7. display device, it is characterized in that, comprise the two dimensional image display module and as the device of each described integrated 3D grating and capacitance touch screen in the claim 1 to 6, the device of described integrated 3D grating and capacitance touch screen places on the described two dimensional image display module.
8. display device as claimed in claim 7, it is characterized in that, described two dimensional image display module is Thin Film Transistor-LCD, and layer of polarizer is simultaneously as the following layer of polarizer of the 3D grating of the device of described integrated 3D grating and capacitance touch screen in the described Thin Film Transistor-LCD.
9. display device as claimed in claim 7, it is characterized in that, described two dimensional image display module is plasma display or organic light emitting diode display, the device of described integrated 3D grating and capacitance touch screen also comprises second layer of polarizer that places under described first transparent electrode substrate, described first layer of polarizer is used to form the last layer of polarizer of described 3D grating, and described second layer of polarizer is used to form the following layer of polarizer of described 3D grating.
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| CN 201220582388 CN203070262U (en) | 2012-11-07 | 2012-11-07 | Device integrating 3D grating and capacitive touch screen and displaying device including same |
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| CN 201220582388 CN203070262U (en) | 2012-11-07 | 2012-11-07 | Device integrating 3D grating and capacitive touch screen and displaying device including same |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424877A (en) * | 2013-08-27 | 2013-12-04 | 江西合力泰科技股份有限公司 | Naked eye 3D display module |
| CN103941912A (en) * | 2014-03-25 | 2014-07-23 | 京东方科技集团股份有限公司 | Touch screen, method for manufacturing touch screen and 3D display device |
| CN104123038A (en) * | 2014-07-08 | 2014-10-29 | 京东方科技集团股份有限公司 | Touch type three-dimensional grating and display device |
| CN104820521A (en) * | 2015-05-12 | 2015-08-05 | 前海艾道隆科技（深圳）有限公司 | Stereoscopic display touch module |
| CN106887445A (en) * | 2015-12-15 | 2017-06-23 | 上海和辉光电有限公司 | A kind of OLED three-dimensional display screens |
-
2012
- 2012-11-07 CN CN 201220582388 patent/CN203070262U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424877A (en) * | 2013-08-27 | 2013-12-04 | 江西合力泰科技股份有限公司 | Naked eye 3D display module |
| CN103941912A (en) * | 2014-03-25 | 2014-07-23 | 京东方科技集团股份有限公司 | Touch screen, method for manufacturing touch screen and 3D display device |
| US9389719B2 (en) | 2014-03-25 | 2016-07-12 | Boe Technology Group Co., Ltd. | Touch screen, method for manufacturing the same, 3D display apparatus |
| CN104123038A (en) * | 2014-07-08 | 2014-10-29 | 京东方科技集团股份有限公司 | Touch type three-dimensional grating and display device |
| CN104123038B (en) * | 2014-07-08 | 2017-03-01 | 京东方科技集团股份有限公司 | A kind of touch three-dimensional grating and display device |
| US9690409B2 (en) | 2014-07-08 | 2017-06-27 | Boe Technology Group Co. Ltd. | Touch three-dimensional grating and display device |
| CN104820521A (en) * | 2015-05-12 | 2015-08-05 | 前海艾道隆科技（深圳）有限公司 | Stereoscopic display touch module |
| CN106887445A (en) * | 2015-12-15 | 2017-06-23 | 上海和辉光电有限公司 | A kind of OLED three-dimensional display screens |
| CN106887445B (en) * | 2015-12-15 | 2020-02-04 | 上海和辉光电有限公司 | OLED three-dimensional display screen |
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