CN204965387U - Display device - Google Patents
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- CN204965387U CN204965387U CN201520802970.3U CN201520802970U CN204965387U CN 204965387 U CN204965387 U CN 204965387U CN 201520802970 U CN201520802970 U CN 201520802970U CN 204965387 U CN204965387 U CN 204965387U
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Abstract
The utility model discloses a display device utilizes the electric capacity structure that forms between capacitor electrode and metal in a poor light in the touch -sensitive screen to realize the forced induction function. In touch -control check -out time section, simultaneously to from capacitor electrode and metal loading touch -control detected signal in a poor light, capacitor electrode's capacitance value changes in order to judge the touch -control position through detecting separately, realizes the touch -control and listens the function. At the pressure detection time quantum, to from capacitor electrode or metal loading touch -control detected signal in a poor light, the change of distance between capacitor electrode and metal in a poor light that causes when the touch -control is pressed can bring the charge -discharge of the electric capacity structure that forms between the two, consequently can change in order to judge touch -control position pressure size through the capacitance value that detects from capacitor electrode, realizes the forced induction function. The embodiment of the utility model provides an above -mentioned display device, it is less to display device's structural design change, can not receive the restriction of assembly tolerance, be favorable to realizing better detection precision, and be favorable to sparingly cost of manufacture.
Description
Technical field
The utility model relates to technical field of touch-control display, particularly relates to a kind of display device.
Background technology
The fields such as pressure sensitive technology refers to the technology can implementing detection to external force, and this technology is just used in industry control for a long time, medical treatment.At present, the mode realizing pressure sensitive in display field especially mobile phone or dull and stereotyped field increases extra mechanism to realize in the backlight portion of display panels or the midframe part of mobile phone, this design needs to make change to the structural design of display panels or mobile phone, and due to build-up tolerance comparatively large, the detection accuracy of this design is also restricted.
Therefore, how to realize the higher pressure sensitive of detection accuracy when display panel hardware modifications is less, be the problem that solution is needed in skilled person territory badly.
Utility model content
In view of this, the utility model embodiment provides a kind of display device, in order to realize the detection of touch control detection and high-precision pressure induction in display device.
Therefore, a kind of display device that the utility model embodiment provides, comprises the array base palte put and subtend substrate relatively, and is arranged at the self-capacitance electrode between described array base palte and described subtend substrate, also comprise:
Be arranged at the backlight metal at the backlight module back side below described array base palte, described backlight metal and described self-capacitance electrode form capacitance structure;
In the touch control detection time period, simultaneously to described self-capacitance electrode and described backlight Metal loading touch control detection signal, by detecting the capacitance variation of each described self-capacitance electrode to judge position of touch; In the pressure detection time period, to described self-capacitance electrode or described backlight Metal loading touch control detection signal, and by detecting the capacitance variation of described self-capacitance electrode to judge the touch detection chip of position of touch pressure size.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, in the touch control detection time period, the grid line in described array base palte loads the electric signal identical with described touch control detection signal with data line.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, in the pressure detection time period, described touch detection chip is specifically for loading touch control detection signal to described self-capacitance electrode; Simultaneously to described backlight Metal loading fixed value signal.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, in the pressure detection time period, the grid line in described array base palte loads the electric signal identical with described touch control detection signal with data line.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, in the pressure detection time period, described touch detection chip, specifically for described backlight Metal loading touch control detection signal, loads fixed value signal to described self-capacitance electrode simultaneously.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, in the pressure detection time period, the grid line in described array base palte and data line load described fixed value electric signal.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, each described self-capacitance electrode forms the common electrode layer on described array base palte.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, described backlight metal is be coated on the metal frame outside described backlight module, or is covered on the metal patch at the described backlight module back side.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, also comprise: be arranged on the mobile phone center outside described backlight module, and be filled in the supporting layer between described mobile phone center and the backlight metal of described backlight module.
The beneficial effect of the utility model embodiment comprises:
A kind of display device that the utility model embodiment provides, comprises the array base palte put and subtend substrate relatively, is arranged at the self-capacitance electrode between array base palte and subtend substrate, is arranged at the backlight metal at the backlight module back side below array base palte; Wherein, backlight metal and self-capacitance electrode form capacitance structure.In the touch control detection time period, simultaneously to self-capacitance electrode and backlight Metal loading touch control detection signal, now, the change of the self-capacitance electrode caused when touch-control presses and the spacing of backlight metal can not bring the discharge and recharge of the capacitance structure formed between the two, namely can not the detectable signal on self-capacitance electrode be impacted, therefore, can according to the Cleaning Principle from appearance, by detecting the capacitance variation of respective capacitance electrode to judge position of touch, realize touch detection function.In the pressure detection time period, to self-capacitance electrode or backlight Metal loading touch control detection signal, now, the change of the self-capacitance electrode caused when touch-control presses and the spacing of backlight metal can bring the discharge and recharge of the capacitance structure formed between the two, namely the detectable signal on self-capacitance electrode is impacted, therefore by detecting the capacitance variation of self-capacitance electrode to judge position of touch pressure size, pressure sensitive function can be realized.The above-mentioned display device that the utility model embodiment provides, the capacitance structure formed between the self-capacitance electrode in touch-screen and backlight metal is utilized to realize the function of pressure sensitive, structural design change for display device is less, the restriction of build-up tolerance can not be subject to, be conducive to realizing better detection accuracy, and be conducive to saving cost of manufacture.
Accompanying drawing explanation
Fig. 1 and Fig. 2 is respectively the structural representation of the display device that the utility model embodiment provides;
Fig. 3 and Fig. 4 is respectively the driver' s timing schematic diagram of the display device that the utility model embodiment provides;
The schematic flow sheet of the driving method of the display device that Fig. 5 provides for the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the display device that the utility model embodiment provides is described in detail.
In accompanying drawing, the thickness of each rete and shape do not reflect actual proportions, and object just signal illustrates the utility model content.
A kind of display device that the utility model embodiment provides, as shown in Figure 1, comprising: the array base palte 100 relatively put and subtend substrate 200, and is arranged at the self-capacitance electrode 300 between array base palte 100 and subtend substrate 200, also comprises:
Be arranged at the backlight metal 500 at backlight module 400 back side below array base palte 100, backlight metal 500 and self-capacitance electrode 300 form capacitance structure;
In the touch control detection time period, touch control detection signal is loaded to self-capacitance electrode 300 and backlight metal 500, by detecting the capacitance variation of respective capacitance electrode 300 to judge position of touch simultaneously; In the pressure detection time period, touch control detection signal is loaded to self-capacitance electrode 300 or backlight metal 500, and by the capacitance variation that detects self-capacitance electrode 300 to judge the touch detection chip of position of touch pressure size.
The above-mentioned display device that the utility model embodiment provides, the capacitance structure formed between the self-capacitance electrode 300 in touch-screen and backlight metal 500 is utilized to realize the function of pressure sensitive, structural design change for display device is less, the restriction of build-up tolerance can not be subject to, be conducive to realizing better detection accuracy, and be conducive to saving cost of manufacture.
Particularly, in the above-mentioned display device that the utility model embodiment provides, as shown in Figure 1, between the touch-screen be made up of array base palte 100 and subtend substrate 200 and the backlight module 400 below it, there is the clearance that spacing is d, when touch-screen is pressed, the reduction of spacing d is brought by compression in clearance, and the electric capacity formed between self-capacitance electrode 300 and backlight metal 500 in such touch-screen will increase, and just can be determined the size of pressure by the change detecting this capacitance.
Preferably, in the above-mentioned display device that the utility model embodiment provides, in order to prevent when pressing touch-screen, there is deformation and cause a part of pressure pass and be not all embodied in the spacing d reduction of clearance in the backlight metal 500 at backlight module 400 back side, as shown in Figure 2, in the specific implementation, can mobile phone center 600 outside backlight module 400 and fill supporting layer 700 between the backlight metal 500 of backlight module 400, avoid it that deformation occurs to support backlight metal 500.Further, the insulating material of the material selection high rigidity of this supporting layer 700 is good.
In the specific implementation, the backlight metal 500 forming capacitance structure in the above-mentioned display device that the utility model embodiment provides with self-capacitance electrode 300 specifically can adopt the metal frame be coated on outside backlight module 400, also can adopt the metal patch being covered on backlight module 400 back side, not limit at this.
In the specific implementation, the concrete structure of the self-capacitance electrode 300 in the above-mentioned display device that the utility model embodiment provides can have multiple implementation, such as, the multiplexing self-capacitance electrode 300 of the common electrode layer in array base palte 100 can be adopted, namely respective capacitance electrode 300 forms the common electrode layer on array base palte, when the structure of common electrode layer being carried out change and being divided into self-capacitance electrode, on the basis of existing array base palte preparation technology, do not need to increase extra technique, can production cost be saved, enhance productivity.
Below to adopt common electrode layer multiplexing as self-capacitance electrode 300, the specific implementation how above-mentioned display device provided the utility model embodiment realizes touch detection and pressure sensitive is described in detail.
Particularly, in the above-mentioned display device that the utility model embodiment provides, in order to reduce the mutual interference between display and touching signals, in the specific implementation, need the mode adopting touch-control and display stage timesharing to drive, further, display driver chip and touch detection chip can also be integrated into a chip in the specific implementation, reduce production cost further.
Particularly, in driver' s timing figure as shown in Figure 3 and Figure 4, generally the time of each frame (V-sync) in display device is divided into displaying time section (Display), touch control detection time period (Touch) and pressure detection time period (Force).
At displaying time section (Display), as shown in Figure 3 and Figure 4, successively scanning gate signal is applied to the every bar signal line Gate in display device, grayscale signal is applied to data signal line Sourse; When adopting common electrode layer multiplexing self-capacitance electrode Cm, the touch detection chip be connected with respective capacitance electrode Cm applies common electrode signal, to realize crystal display respectively to respective capacitance electrode Cm.Now, the touch detection chip be connected with backlight metal BL generally also can apply common electrode signal to backlight metal BL.
At touch control detection time period (Touch), as shown in Figure 3 and Figure 4, touch detection chip loads touch control detection signal to self-capacitance electrode Cm and backlight metal BL simultaneously.Now, the change of the spacing of the self-capacitance electrode Cm caused when touch-control presses and backlight metal BL can not bring the discharge and recharge of the capacitance structure formed between the two, namely can not the detectable signal on self-capacitance electrode Cm be impacted, therefore, can according to the Cleaning Principle from appearance, by detecting the capacitance variation of respective capacitance electrode Cm to judge position of touch, realize touch detection function.
Further, at touch control detection time period (Touch), in order to avoid producing ground capacitance between the grid line Gate in array base palte and data line Sourse and self-capacitance electrode Cm thus affecting the accuracy of touch control detection, in the specific implementation, as shown in Figure 3 and Figure 4, the electric signal identical with touch control detection signal can be loaded by grid line Gate in touch control detection time period array substrate with data line Sourse, the ground capacitance between grid line Gate and data line Sourse and self-capacitance electrode Cm can be eliminated like this, be convenient to the accuracy improving touch control detection.
At pressure detection time period (Force), touch detection chip loads touch control detection signal to self-capacitance electrode Cm or backlight metal BL, now, the change of the spacing of the self-capacitance electrode Cm caused when touch-control presses and backlight metal BL can bring the discharge and recharge of the capacitance structure formed between the two, namely the detectable signal on self-capacitance electrode is impacted, therefore by detecting the capacitance variation of self-capacitance electrode to judge position of touch pressure size, pressure sensitive function can be realized.
Particularly, following two kinds of modes can be adopted at pressure detection time period (Force) touch detection chip for the signal of self-capacitance electrode and backlight Metal loading:
First kind of way, as shown in Figure 3: in the pressure detection time period, touch detection chip loads touch control detection signal to self-capacitance electrode Cm; Load fixed value signal to backlight metal BL, namely backlight metal BL level is now relatively fixing simultaneously.Like this, the change of the spacing of the self-capacitance electrode Cm caused when touch-control presses and backlight metal BL can bring the discharge and recharge of the capacitance structure formed between the two, the impact that this charge and discharge process causes can count in the amount detection signal of self-capacitance electrode, suppose that the amount detection signal now obtained is b, and in the touch control detection time period (Touch) by the Cleaning Principle from appearance, the amount detection signal being detected self-capacitance electrode by the electric capacity produced between finger and self-capacitance electrode is assumed to be a, then the amount detection signal f=b-a produced due to pressure.F is larger, shows that force value is larger, can determine force value by the way.
Further, in first kind of way, in order to avoid producing ground capacitance between the grid line Gate in pressure detection time period array base palte and data line Sourse and self-capacitance electrode Cm thus affecting the accuracy of pressure sensitive, in the specific implementation, as shown in Figure 3, in the pressure detection time period, the electric signal identical with described touch control detection signal can be loaded by grid line Gate in array substrate with data line Sourse, the ground capacitance between grid line Gate and data line Sourse and self-capacitance electrode Cm can be eliminated like this, be convenient to the accuracy improving pressure sensitive.
The second way, as shown in Figure 4: in the pressure detection time period, touch detection chip loads touch control detection signal to backlight metal BL; Load fixed value signal to self-capacitance electrode Cm, namely self-capacitance electrode Cm level is now relatively fixing simultaneously.Like this, the change of the spacing of the self-capacitance electrode Cm caused when touch-control presses and backlight metal BL can bring the discharge and recharge of the capacitance structure formed between the two, utilize mutual tolerance Cleaning Principle, detect the change amount signal of self-capacitance electrode, the capacitance between self-capacitance electrode and backlight metal can be determined, thus calculate the size of pressure.
Further, in the second way, in order to avoid producing ground capacitance between the grid line Gate in pressure detection time period array base palte and data line Sourse and self-capacitance electrode Cm thus affecting the accuracy of pressure sensitive, in the specific implementation, as shown in Figure 4, in the pressure detection time period, fixed value electric signal can be loaded by grid line Gate in array substrate and data line Sourse, the ground capacitance between grid line Gate and data line Sourse and self-capacitance electrode Cm can be eliminated like this, be convenient to the accuracy improving pressure sensitive.
Conceive based on same utility model, the utility model embodiment still provides a kind of driving method of above-mentioned display device, as shown in Figure 5, comprises the following steps:
S501, in the touch control detection time period, simultaneously to self-capacitance electrode and backlight Metal loading touch control detection signal, by detecting the capacitance variation of respective capacitance electrode to judge position of touch;
S502, in the pressure detection time period, to self-capacitance electrode or backlight Metal loading touch control detection signal, and by detecting capacitance variation between self-capacitance electrode and backlight metal to judge position of touch pressure size.
Preferably, in the driving method of the above-mentioned display device provided in the utility model embodiment, when performing step S501, can also following steps be performed:
In the touch control detection time period, the grid line in array substrate loads the electric signal identical with touch control detection signal with data line.Grid line and the ground capacitance between data line and self-capacitance electrode can be eliminated like this, be convenient to the accuracy improving touch control detection.
Particularly, in the driving method of the above-mentioned display device provided in the utility model embodiment, to self-capacitance electrode or backlight Metal loading touch control detection signal in step S501, concrete a kind of implementation is:
In the pressure detection time period, touch control detection signal is loaded, simultaneously to backlight Metal loading fixed value signal to self-capacitance electrode.
Further, in the driving method of the above-mentioned display device provided in the utility model embodiment, when step S501 adopts aforesaid way to realize, can also comprise the following steps:
In the pressure detection time period, the grid line in array substrate loads the electric signal identical with touch control detection signal with data line.Grid line and the ground capacitance between data line and self-capacitance electrode can be eliminated like this, be convenient to the accuracy improving pressure sensitive.
Particularly, in the driving method of the above-mentioned display device provided in the utility model embodiment, to self-capacitance electrode or backlight Metal loading touch control detection signal in step S501, concrete another kind of implementation is:
In the pressure detection time period, to backlight Metal loading touch control detection signal, fixed value signal is loaded to self-capacitance electrode simultaneously.
Further, in the driving method of the above-mentioned display device provided in the utility model embodiment, when step S501 adopts aforesaid way to realize, can also comprise the following steps:
In the pressure detection time period, the grid line in array substrate and data line load fixed value electric signal.Grid line and the ground capacitance between data line and self-capacitance electrode can be eliminated like this, be convenient to the accuracy improving pressure sensitive.
The above-mentioned display device that the utility model embodiment provides, comprises the array base palte put and subtend substrate relatively, is arranged at the self-capacitance electrode between array base palte and subtend substrate, is arranged at the backlight metal at the backlight module back side below array base palte; Wherein, backlight metal and self-capacitance electrode form capacitance structure.In the touch control detection time period, simultaneously to self-capacitance electrode and backlight Metal loading touch control detection signal, now, the change of the self-capacitance electrode caused when touch-control presses and the spacing of backlight metal can not bring the discharge and recharge of the capacitance structure formed between the two, namely can not the detectable signal on self-capacitance electrode be impacted, therefore, can according to the Cleaning Principle from appearance, by detecting the capacitance variation of respective capacitance electrode to judge position of touch, realize touch detection function.In the pressure detection time period, to self-capacitance electrode or backlight Metal loading touch control detection signal, now, the change of the self-capacitance electrode caused when touch-control presses and the spacing of backlight metal can bring the discharge and recharge of the capacitance structure formed between the two, namely the detectable signal on self-capacitance electrode is impacted, therefore by detecting the capacitance variation of self-capacitance electrode to judge position of touch pressure size, pressure sensitive function can be realized.The above-mentioned display device that the utility model embodiment provides, the capacitance structure formed between the self-capacitance electrode in touch-screen and backlight metal is utilized to realize the function of pressure sensitive, structural design change for display device is less, the restriction of build-up tolerance can not be subject to, be conducive to realizing better detection accuracy, and be conducive to saving cost of manufacture.
Obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (9)
1. a display device, comprises the array base palte put and subtend substrate relatively, and is arranged at the self-capacitance electrode between described array base palte and described subtend substrate, it is characterized in that, also comprise:
Be arranged at the backlight metal at the backlight module back side below described array base palte, described backlight metal and described self-capacitance electrode form capacitance structure;
In the touch control detection time period, simultaneously to described self-capacitance electrode and described backlight Metal loading touch control detection signal, by detecting the capacitance variation of each described self-capacitance electrode to judge position of touch; In the pressure detection time period, to described self-capacitance electrode or described backlight Metal loading touch control detection signal, and by the capacitance variation between the described self-capacitance electrode of detection and backlight metal to judge the touch detection chip of position of touch pressure size.
2. display device as claimed in claim 1, is characterized in that, in the touch control detection time period, the grid line in described array base palte loads the electric signal identical with described touch control detection signal with data line.
3. display device as claimed in claim 1, is characterized in that, in the pressure detection time period, described touch detection chip is specifically for loading touch control detection signal to described self-capacitance electrode; Simultaneously to described backlight Metal loading fixed value signal.
4. display device as claimed in claim 3, is characterized in that, in the pressure detection time period, the grid line in described array base palte loads the electric signal identical with described touch control detection signal with data line.
5. display device as claimed in claim 1, is characterized in that, in the pressure detection time period, described touch detection chip, specifically for described backlight Metal loading touch control detection signal, loads fixed value signal to described self-capacitance electrode simultaneously.
6. display device as claimed in claim 5, it is characterized in that, in the pressure detection time period, the grid line in described array base palte and data line load described fixed value electric signal.
7. the display device as described in any one of claim 1-6, is characterized in that, each described self-capacitance electrode forms the common electrode layer on described array base palte.
8. the display device as described in any one of claim 1-6, is characterized in that, described backlight metal is be coated on the metal frame outside described backlight module, or is covered on the metal patch at the described backlight module back side.
9. the display device as described in any one of claim 1-6, is characterized in that, also comprises: be arranged on the mobile phone center outside described backlight module, and is filled in the supporting layer between described mobile phone center and the backlight metal of described backlight module.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105511687A (en) * | 2016-01-29 | 2016-04-20 | 京东方科技集团股份有限公司 | Pressure induction structure, pressure induction panel and pressure induction display device |
| CN105630251A (en) * | 2016-03-17 | 2016-06-01 | 厦门天马微电子有限公司 | Array substrate, display panel and display device |
| CN105807991A (en) * | 2016-03-03 | 2016-07-27 | 京东方科技集团股份有限公司 | Display substrate, embedded touch screen, driving method for embedded touch screen and display apparatus |
| CN105824470A (en) * | 2016-03-16 | 2016-08-03 | 昆山龙腾光电有限公司 | Touch display device and mobile terminal |
| CN105975121A (en) * | 2016-04-27 | 2016-09-28 | 京东方科技集团股份有限公司 | Touch detection circuit, driving method, embedded touch screen and display apparatus |
| CN105975140A (en) * | 2016-05-24 | 2016-09-28 | 厦门天马微电子有限公司 | Touching device and driving method thereof and touching display device and driving method thereof |
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| CN106980423A (en) * | 2016-01-19 | 2017-07-25 | 瑞鼎科技股份有限公司 | Self-capacitance touch-control and pressure-sensing device and self-capacitance touch-control and pressure sensing method |
| TWI595402B (en) * | 2016-03-17 | 2017-08-11 | 敦泰電子有限公司 | Electronic device and driving method thereof |
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| CN106980423A (en) * | 2016-01-19 | 2017-07-25 | 瑞鼎科技股份有限公司 | Self-capacitance touch-control and pressure-sensing device and self-capacitance touch-control and pressure sensing method |
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| CN105511687A (en) * | 2016-01-29 | 2016-04-20 | 京东方科技集团股份有限公司 | Pressure induction structure, pressure induction panel and pressure induction display device |
| CN107045216A (en) * | 2016-02-05 | 2017-08-15 | 敦泰电子有限公司 | A kind of electronic equipment with pressure detecting function |
| CN105807991A (en) * | 2016-03-03 | 2016-07-27 | 京东方科技集团股份有限公司 | Display substrate, embedded touch screen, driving method for embedded touch screen and display apparatus |
| US10353505B2 (en) | 2016-03-03 | 2019-07-16 | Boe Technology Group Co., Ltd. | Display substrate, in-cell touch screen, display apparatus, and touch screen driving method |
| CN107179147A (en) * | 2016-03-09 | 2017-09-19 | 敦泰电子有限公司 | A kind of electronic equipment and driving method with pressure detecting function |
| CN105824470A (en) * | 2016-03-16 | 2016-08-03 | 昆山龙腾光电有限公司 | Touch display device and mobile terminal |
| TWI595402B (en) * | 2016-03-17 | 2017-08-11 | 敦泰電子有限公司 | Electronic device and driving method thereof |
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| CN105630251B (en) * | 2016-03-17 | 2018-07-24 | 厦门天马微电子有限公司 | A kind of array substrate, display panel and display device |
| CN105630251A (en) * | 2016-03-17 | 2016-06-01 | 厦门天马微电子有限公司 | Array substrate, display panel and display device |
| CN107291284B (en) * | 2016-04-01 | 2020-06-05 | 乐金显示有限公司 | Touch display device |
| CN107291284A (en) * | 2016-04-01 | 2017-10-24 | 乐金显示有限公司 | Touch display unit |
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