CN103941445A - Liquid crystal box and control method related to the same - Google Patents
Liquid crystal box and control method related to the same Download PDFInfo
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- CN103941445A CN103941445A CN201310271033.5A CN201310271033A CN103941445A CN 103941445 A CN103941445 A CN 103941445A CN 201310271033 A CN201310271033 A CN 201310271033A CN 103941445 A CN103941445 A CN 103941445A
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Abstract
The invention discloses a liquid crystal box which comprises a first base plate, a second base plate, a touching unit and a common electrode. The second base plate and the first base plate are arranged oppositely. The touching unit is arranged on the first base plate. The touching unit comprises a plurality of first transparent electrodes which are arranged in the first direction and a plurality of second transparent electrodes which are arranged in the second direction. The common electrode is arranged on the second base plate. The common electrode and the touching unit are arranged oppositely. A structure for achieving a touching function is integrated into a liquid crystal raster for achieving three-dimensional displaying, the touching function and the three-dimensional displaying function can be achieved at the same time only through the two base plates, the overall thickness of a displaying device is lowered, and meanwhile the brightness of the displaying device is improved.
Description
Technical field
The present invention relates to display technique, particularly the liquid crystal of a kind of integrated touch controllable function and 3-D display pattern and the control method that comprises this liquid crystal cell.
Background technology
Dimension display technologies is one of the most popular at present display technique.Current three-dimensional stereo display technique has two general orientation: one is to join bespectacled three-dimensional stereo display technique; Another is a bore hole three-dimensional stereo display technique.Bore hole three-dimensional stereo display technique is owing to not needing to wear glasses, not only convenient but also save cost, is a focus of research.
Touch technology has improved interactive operability greatly, is changing just gradually people life style.According to the difference of principle, touch-screen can be divided into the types such as resistance-type, condenser type, infrared-type and surface acoustic wave type.Capacitive touch screen technology is due to the touching technique that technique is simple, life of product is grown, transmittance high becomes current main flow.
As shown in Figure 1, existing integrated touch controllable function and two-dimensional/three-dimensional show that the liquid crystal indicator of translation function comprises touch screen 110, liquid crystal grating box 120 and display panels 130 to the scheme that current touch controllable function combines with 3-D display pattern.Wherein touch screen 110 comprises transparency carrier 111, lower transparency carrier 113 and is arranged at the touch control electrode layer 112 on lower transparency carrier 113 surfaces.Liquid crystal grating box 120 comprises: upper transparency carrier 121, be arranged at the upper transparent electrode layer 122 of transparency carrier 121 lower surfaces, lower transparency carrier 124, is arranged at the lower transparent electrode layer 123 of lower transparency carrier 124 upper surfaces, and liquid crystal layer 125 between upper and lower transparency carrier.And display panels 130 at least comprises: upper transparency carrier 131, be arranged at the upper electrode layer 132 of transparency carrier 131 lower surfaces, lower transparency carrier 134, is arranged at the lower electrode layer 133 of lower transparency carrier 134 upper surfaces, and liquid crystal layer 135 between upper and lower transparency carrier.Though and not shown in figure, in whole liquid crystal indicator, conventionally on touch screen 110, also have one deck enclosing cover substrate.Like this, whole liquid crystal indicator has 7 substrates, and thickness is large, and manufacturing cost is high, and transmittance is low, and laminating difficulty is large.
Summary of the invention
The control method of the display device that in view of this, the invention provides a kind of liquid crystal cell and comprise this liquid crystal cell.
A kind of liquid crystal cell, comprising: first substrate; The second substrate being oppositely arranged with described first substrate; Touch control unit, is arranged on described first substrate, and described touch control unit comprises many first transparency electrodes that arrange along first direction, and many second transparency electrodes that arrange along second direction; Common electrode, is arranged on described second substrate, is oppositely arranged with described touch control unit.
A kind of control method of the display device that comprises this liquid crystal cell, comprise: a timesharing cycle of 3-D display pattern is divided into the very first time and the second time, the scan period that a described timesharing cycle is described touch control unit, wherein, described the second time is less than the hold-up time of liquid crystal molecule, and be more than or equal to described touch control unit touching signals is carried out to one-time detection required sweep time, the hold-up time of described liquid crystal molecule is in the time that the driving voltage of described the first transparency electrode changes, and liquid crystal molecule maintains the time of previous state; Within the very first time, by described touch control unit the second transparency electrode ground connection, many described the first transparency electrodes are applied to different driving voltages, realize 3-D display; Within the second time, by described common electrode ground connection, the first transparency electrode and the second transparency electrode to described touch control unit apply driving voltage, are keeping realizing touch controllable function under 3-D display state.
The present invention due to by the structure assembly of realizing touch controllable function to realizing in the liquid crystal grating of 3-D display, only need two substrates just can realize touch controllable function and three dimensional display capabilities simultaneously, reduce the integral thickness of display device, the brightness that has also improved display device simultaneously.
Brief description of the drawings
Fig. 1 is the liquid crystal indicator that prior art has touch controllable function and three dimensional display capabilities;
Fig. 2 is the section of structure of the liquid crystal cell of one embodiment of the invention;
Fig. 3 a is the structure vertical view of two transparency electrodes of the touch control unit of one embodiment of the invention;
Fig. 3 b is the structure vertical view of the first transparency electrode of the touch control unit of one embodiment of the invention;
Fig. 3 c is a kind of structure vertical view of the touch control unit of one embodiment of the invention;
Fig. 4 is another structure vertical view of one embodiment of the invention touch control unit;
Fig. 5 is another structure vertical view of the touch control unit of one embodiment of the invention;
Fig. 6 be another embodiment of the present invention liquid crystal cell section of structure;
Fig. 7 is the drive waveforms figure of the touch-control 3-D display of the liquid crystal cell of another embodiment of the present invention;
The drive waveforms figure that the touch-control two dimension of the liquid crystal cell of Fig. 8 another embodiment of the present invention shows
Fig. 9 is the drive waveforms figure of the touch-control 3-D display of the liquid crystal cell of another embodiment of the present invention;
Figure 10 is the drive waveforms figure that the touch-control two dimension of the liquid crystal cell of another embodiment of the present invention shows
Embodiment
In order to make object of the present invention, technical scheme and advantage are clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment mono-
As shown in Figure 2, liquid crystal cell 2 in the present embodiment comprises: first substrate 21, with the second substrate 22 that first substrate 21 is oppositely arranged, wherein first substrate 21 and second substrate 22 all can adopt transparent glass substrate, between first substrate 21 and second substrate 22, are provided with one deck liquid crystal layer 23.On first substrate 21, be provided with touch control unit 24, touch control unit 24 specifically comprises many second transparency electrodes 243 that arrange along first direction that are arranged on described first substrate 21, be formed on the insulation course 242 in the second transparency electrode 243, be formed on many first transparency electrodes 241 that arrange along second direction on insulation course 242.Common electrode 25 is arranged in the one side that second substrate 22 and touch control unit 24 be oppositely arranged, and common electrode 25 is whole electrode, is also provided with polaroid 20 at first substrate 21 away from a side of touch-control power supply 24.Because common electrode is that whole electrode is seamless, 3-D display effect is better.
As shown in Figure 3 a, 3b and 3c as shown in, between the first transparency electrode 241, be parallel to each other, and be strip structure; Between the second transparency electrode 243, be parallel to each other equally, and be strip structure.In the present embodiment, first direction is horizontal direction, and second direction is vertical direction, and first direction is mutually vertical with second direction, and the second transparency electrode 243 is mutually vertical with the first transparency electrode 241.
Above-mentioned the second transparency electrode 243 is only the one of embodiment, for improving the sensitivity of touch control unit 24, reduce load, the second transparency electrode can also be as shown in Figure 4, the second transparency electrode 243 and the first transparency electrode 241 are arranged in a crossed manner, have and overlapping part and the not overlapping part of the first transparency electrode 241, the width of the overlapping part of the second transparency electrode 243 and the first transparency electrode 241 is less than the width for overlapping part.Meanwhile, can increase by the second transparency electrode 243 with the first transparency electrode 241 area that is overlapping part, and then increase the mutual capacitance C of the first transparency electrode 241 and the second transparency electrode 243, improve the accuracy that position of touch judges.
Touch control unit 24 in the present embodiment is mainly used to realize the detection to touching signals, the position that judges whether that touch operation occurs and operation occurs to touch by detecting the situation of change of self-capacitance in the first transparency electrode 241 and the second transparency electrode 243, also can judge whether the position that occurs to touch operation and touch operation occurs by the situation of change of the mutual capacitance C of the first transparency electrode 241 and the second transparency electrode 243 on detection touch control unit 24.
It should be noted that, above-mentioned first direction and second direction are only the one of embodiment, the display panel coordinating according to this liquid crystal cell and demonstration requirement, and first direction and/or second direction can be by arbitrarily angled settings.As shown in Figure 5, the oblique setting of first direction and second direction, first direction and second square be not orthogonal vertical mutually, also the second transparency electrode 243 is mutually mutually non-orthogonal vertical with the first transparency electrode 241.But due to the first transparency electrode 241 and the second transparency electrode 243 as the sensing electrode of touch control unit for locating the touch position of finger, therefore, angle between the first transparency electrode 241 and the second transparency electrode 243 is less, be unfavorable for the confirmation of finger touches position, preferably, between 60 ° again～90 ° of angles between the first transparency electrode 241 and the second transparency electrode 243, the angle between first direction and second direction is between 60 °～90 °.
First substrate 21 is the substrate near human eye one side, namely near the substrate that touches the side operating.Now, be formed at the touch control unit 24 of the lower surface of first substrate 21 can be relatively near touch action, thereby the stronger touch signal that can detect, makes the touch control detection sensitivity of liquid crystal cell 2 higher.
It should be noted that, can be also that second substrate 23 is the substrate near human eye one side.The present invention is not subject to first substrate 21 and second substrate 23 from the restriction of the exhaust position of human eye, is not subject to touch control unit 24 and common electrode 25 in the specifically restriction on which transparency carrier yet.
In the present embodiment, the first transparency electrode 241 and the electrode of common electrode 25 for formation liquid crystal grating.Many the first transparency electrodes 241 are applied to the voltage of driving, the driving voltage of alive size and liquid crystal suitable.Meanwhile, be to apply the special voltage of zero volt or ground connection to common electrode 25, to coordinate the first transparency electrode 241 to form electric field, thereby reach the effect of controlling the arrangement of liquid crystal molecule in liquid crystal layer 23.In the case, liquid crystal molecule in liquid crystal layer 23 can be arranged by some cycles, the region of the first transparency electrode 241 correspondences is light tight region, and the gap area between the first transparency electrode 241 is transmission region, and under this particular arrangement, whole liquid crystal cell 2 becomes the grating that a kind of black and white strip is alternate.Light is through after this grating, can separately enter into people's right and left eyes, people's right and left eyes obtains the different image of two width of a width picture, and the different image of this two width again overlaps in people's brain, will produce the deep vision picture of (also claiming stereoscopic vision), realize 3-D display.
It should be noted that, in said process, just provide a kind of feasible voltage mode, in other embodiments, also can apply respectively corresponding voltage to each the first transparency electrode 241 and produce corresponding arrangement with the liquid crystal molecule of controlling in liquid crystal layer 23, make the light of different pictures be pooled to people's right and left eyes by corresponding light path, realize 3-D display is provided.
It should be noted that, for the 3 D stereo that produces better effects shows, all less usually used as the strip shaped electric poles width of liquid crystal grating, to coordinate the pixel wide of display panel, apply after voltage and form than the black and white bar shaped of comparatively dense, i.e. liquid crystal grating.But the first transparency electrode 241 in the present embodiment due to also will with the sensing electrode of the second transparency electrode 243 as touch-control electrode, and during as touch control unit electrode, do not need so high resolution, therefore, in the time will realizing touch controllable function, many the first transparency electrodes 241 in touch control unit 24 can be done as a wholely, apply a driving voltage.
It should be noted that the width of spacing between the width of the first transparency electrode 241 and the first transparency electrode 241 is according to the specific requirement specific design adjustment of product.The present invention is not subject to the restriction of the width of spacing between the width of the first transparency electrode 241 and the first transparency electrode 241.
The liquid crystal cell 2 that the present embodiment provides by the structure assembly of realizing touch controllable function to realizing in the liquid crystal grating of 3-D display, only need two substrates just can realize touch controllable function and three dimensional display capabilities simultaneously, can reduce the integral thickness of display device, also improve the brightness of display device.Meanwhile, also can provide two-dimensional/three-dimensional to show that dress changes function.In addition, the manufacture craft of liquid crystal cell of the present invention is simple, only need on first substrate, expose and form figure, and second substrate only needs plated film.
Based on the structure of the disclosed liquid crystal cell of the present embodiment, a kind of control method of liquid crystal cell is provided, this control method realizes touch controllable function for liquid crystal cell under 3-D display pattern simultaneously.
As shown in Figure 7, the type of drive of each electrode layer, comprise: in a timesharing cycle T in 3-D display pattern, successively described touch control unit 24 and common electrode 25 are applied to driving voltage, drive successively to carry out liquid crystal grating driving and touch within a timesharing cycle, the scan period of a described timesharing cycle to touch control electrode layer, a timesharing cycle by 3-D display pattern is divided into the very first time and the second time, within a timesharing cycle, only touch control unit 24 is applied to driving voltage one time, in the present embodiment, touching driving time is the second time t2, liquid crystal grating driving time is very first time t1, the ratio value of very first time t1 and described the second time t2 is between 1.5～4.
It should be noted that, in the present embodiment, the time in a timesharing cycle is not specifically limited, as long as complete the scanning of a touch control electrode layer within a timesharing cycle, generally, the described timesharing cycle is the inverse of liquid crystal cell driving frequency.
In liquid crystal grating driving process, within the very first time, the second transparency electrode 243 in described touch control unit 24 and common electrode 25 ground connection (are connect to public electrode, public electrode is now zero potential, lower same), the first transparency electrode 241 is applied to driving voltage, make the first transparency electrode 241 and common electrode 25 appearance potentials poor, as shown in Figure 3 b.Now can between the first substrate of liquid crystal cell 2 21 and the apparent surface of second substrate 22, form specific electric field, this electric field controls liquid crystal molecule rotation reaches particular arrangement, and whole liquid crystal cell forms the grating that a kind of black and white strip is alternate, thereby realizes 3-D display.
It should be noted that, in liquid crystal grating driving process, aging under unidirectional driving voltage for avoiding liquid crystal to work long hours, the driving voltage therefore described transparent bar-type electrode layer being applied needs temporal evolution, and the duration of same voltage need be less than the digestion time of liquid crystal.Preferably, the waveform of the driving voltage in the present embodiment, described the first transparency electrode 241 being applied is square wave, this square wave changes with respect to ground state (being zero potential in the present embodiment) alternating polarity, as shown in Figure 7, within a timesharing cycle, the voltage in liquid crystal grating driving process need repeatedly change.Because liquid crystal molecule has symmetry, when when voltage swing is constant, electrically generation changes over the ground, can there is Plane Rotation in liquid crystal molecule, and after rotation, the overall alignment of liquid crystal is still consistent, and whole process does not affect the leaded light effect of liquid crystal.
In touch driving process, within the second time, by common electrode 25 ground connection, the first transparency electrode 241 in described touch control unit 24 and the second transparency electrode 243 are applied to voltage, specifically to the first transparency electrode 241 on described touch control unit 24 and the second transparency electrode 243 are accessed to touch-control module control circuit, this touch-control module control circuit arranges the bezel locations with liquid crystal cell, wherein, drive electrode is applied to driving voltage, and detect the induced signal on induction electrode, to realize the detection to touching signals.Wherein, the time that touches driving process is less than the hold-up time of liquid crystal molecule, still to keep 3-D display state in touch driving process, and the time that touches driving process is more than or equal to described touch control unit 24 touching signals is carried out one-time detection required sweep time (hereinafter to be referred as touch-control sweep time, i.e. the second time t2), guarantee touch-control scanning at least one times, thereby kept the detection of realization to touching signals under 3-D display state.
It should be noted that, liquid crystal molecule all has anelasticity, after the loss of voltage applying on liquid crystal molecule, its interelectrode capacity can not disappear at once, the deflection angle of liquid crystal molecule can't return to original state, apply a voltage but remain into again always to liquid crystal molecule, the hold-up time of the liquid crystal molecule described in the present embodiment is in the time that the driving voltage of described transparent bar-type electrode layer changes, liquid crystal molecule maintains the time of previous state, the hold-up time of liquid crystal molecule is fixed often, generally be about 8ms, and touch electrode layer carries out the time of a touch-control scanning about 3ms left and right, on this basis, the touch of the present embodiment drives the time of process, the second time was preferably and is less than 8ms, more preferably 3ms.
It should be noted that, the hold-up time of liquid crystal molecule may be greater than the time t1 of touch-control scanning, in a timesharing cycle T, reality executes to transparent bar-type electrode layer the difference that the alive time may be less than a timesharing cycle T and touch-control t1 sweep time, as shown in Figure 7.
As shown in Figure 8, under two dimensional mode, the type of drive of each electrode layer, in conjunction with the structure of liquid crystal cell, the control method of this liquid crystal cell specifically comprises: under two dimensional mode, and described common electrode 25 ground connection, be that common electrode 25 does not connect electricity, the state that liquid crystal cell 2 is all-transparent, applies voltage to the first transparency electrode 241 in described touch control unit and the second transparency electrode 243, realizes the detection to touching signals.
It should be noted that, under two dimensional mode, due to transparent bar-type electrode layer ground connection, therefore can not affect touch control detection, in this case, touch control electrode layer is executed to alive mode can be any, can carry out at any time touch-control scanning, and not limit the time of touch-control scanning.In order to simplify control procedure, preferred in the present embodiment, under two dimensional mode, described touch control electrode layer is executed to alive control mode with under 3-D display state, described touch control electrode layer is executed to alive control mode identical, as shown in Figure 8
Embodiment bis-
As shown in Figure 6, liquid crystal cell 2 in the present embodiment comprises first substrate 21, with the second substrate 22 that first substrate 21 is oppositely arranged, first substrate 21 and second substrate 22 all can adopt transparent glass substrate, between first substrate 21 and second substrate 22, are provided with one deck liquid crystal layer 23.On first substrate 21, be provided with touch control unit 24, touch control unit 24 specifically comprises many second transparency electrodes 243 that arrange along first direction that are arranged on described first substrate 21, be formed on the first insulation course 242 in the second transparency electrode 243, be formed on many first transparency electrodes 241 that arrange along second direction on insulation course 242.
The present embodiment and above-described embodiment one difference are, also form the second insulation course 26 on touch control unit 24, and the 3rd transparency electrode 27 is set on the second insulation course 26.Common electrode 25 is arranged in the one side that second substrate 22 and the 3rd transparency electrode 27 be oppositely arranged, and common electrode 25 is whole electrode.Also be provided with polaroid 20 at first substrate 21 away from a side of touch-control power supply 24.Because common electrode is that whole electrode is seamless, 3-D display effect is better.
In the present embodiment, the 3rd transparency electrode 27 and the electrode of common electrode 25 for formation liquid crystal grating, thus reach the effect of controlling the arrangement of liquid crystal molecule in liquid crystal layer 23.In the case, the liquid crystal molecule in liquid crystal layer 23 can be arranged by some cycles, and under this particular arrangement, whole liquid crystal cell becomes the grating that a kind of black and white strip is alternate.Light is through after this grating, can separately enter into people's right and left eyes, people's right and left eyes obtains the different image of two width of a width picture, and the different image of this two width again overlaps in people's brain, will produce the deep vision picture of (also claiming stereoscopic vision), realize 3-D display.
It should be noted that, for the 3 D stereo that produces better effects shows, all less usually used as the strip shaped electric poles width of liquid crystal grating, to coordinate the pixel wide of display panel, apply after voltage and form than the black and white bar shaped of comparatively dense, i.e. liquid crystal grating.But the first transparency electrode 241 in the present embodiment due to also will with the sensing electrode of the second transparency electrode 243 as touch-control electrode, and during as touch control unit electrode, do not need so high resolution, therefore, in the time will realizing touch controllable function, many the first transparency electrodes 241 in touch control unit 24 can be done as a wholely, apply a driving voltage.
The liquid crystal cell 2 that the present embodiment provides by the structure assembly of realizing touch controllable function to realizing in the liquid crystal grating of 3-D display, only need two substrates just can realize touch controllable function and three dimensional display capabilities simultaneously, can reduce the integral thickness of display device, also improve the brightness of display device.Meanwhile, also can provide two-dimensional/three-dimensional to show that dress changes function.In addition, the manufacture craft of liquid crystal cell of the present invention is simple, only need on first substrate, expose and form figure, and second substrate only needs plated film.
Based on the structure of the disclosed liquid crystal cell of the present embodiment, a kind of control method of liquid crystal cell is provided, this control method realizes touch controllable function for liquid crystal cell under 3-D display pattern simultaneously.
As shown in Figure 9, the type of drive of each electrode layer, comprise: in a timesharing cycle T in 3-D display pattern, successively to described touch control unit 24, the 3rd transparency electrode 26 and common electrode 25 apply driving voltage, drive successively to carry out liquid crystal grating driving and touch within a timesharing cycle, the scan period of a described timesharing cycle to touch control electrode layer, a timesharing cycle by 3-D display pattern is divided into the very first time and the second time, within a timesharing cycle, only touch control unit 24 is applied to driving voltage one time, in the present embodiment, touching driving time is the second time t2, liquid crystal grating driving time is very first time t1, the ratio value of very first time t1 and described the second time t2 can be between 1.5～4.
It should be noted that, in the present embodiment, the time in a timesharing cycle is not specifically limited, as long as complete the scanning of a touch control electrode layer within a timesharing cycle, generally, the described timesharing cycle is the inverse of liquid crystal cell driving frequency.
In liquid crystal grating driving process, within the very first time, the first transparency electrode 241, the second transparency electrode 243 and common electrode 25 ground connection in described touch control unit 24 (are connect to public electrode, public electrode is now zero potential, lower same), the 3rd transparency electrode 241 is applied to driving voltage, make the first transparency electrode 241 and common electrode 25 appearance potentials poor.Now can between the first substrate of liquid crystal cell 2 21 and the apparent surface of second substrate 22, form specific electric field, this electric field controls liquid crystal molecule rotation reaches particular arrangement, and whole liquid crystal cell forms the grating that a kind of black and white strip is alternate, thereby realizes 3-D display.
It should be noted that, in liquid crystal grating driving process, aging under unidirectional driving voltage for avoiding liquid crystal to work long hours, the driving voltage therefore described transparent bar-type electrode layer being applied needs temporal evolution, and the duration of same voltage need be less than the digestion time of liquid crystal.Preferably, the waveform of the driving voltage in the present embodiment, described the 3rd transparency electrode 241 being applied is square wave, this square wave changes with respect to ground state (being zero potential in the present embodiment) alternating polarity, as shown in Figure 9, within a timesharing cycle, the voltage in liquid crystal grating driving process need repeatedly change.Because liquid crystal molecule has symmetry, when when voltage swing is constant, electrically generation changes over the ground, can there is Plane Rotation in liquid crystal molecule, and after rotation, the overall alignment of liquid crystal is still consistent, and whole process does not affect the leaded light effect of liquid crystal.
In touch driving process, within the second time, by the 3rd transparency electrode 26 and common electrode 25 ground connection, the first transparency electrode 241 in described touch control unit 24 and the second transparency electrode 243 are applied to voltage, specifically to the first transparency electrode 241 on described touch control unit 24 and the second transparency electrode 243 are accessed to touch-control module control circuit, this touch-control module control circuit arranges the bezel locations with liquid crystal cell, wherein, drive electrode is applied to driving voltage, and detect the induced signal on induction electrode, to realize the detection to touching signals.Wherein, the time that touches driving process is less than the hold-up time of liquid crystal molecule, still to keep 3-D display state in touch driving process, and the time that touches driving process is more than or equal to described touch control unit 24 touching signals is carried out one-time detection required sweep time (hereinafter to be referred as touch-control sweep time, i.e. the second time t2), guarantee touch-control scanning at least one times, thereby kept the detection of realization to touching signals under 3-D display state.
It should be noted that, liquid crystal molecule all has anelasticity, after the loss of voltage applying on liquid crystal molecule, its interelectrode capacity can not disappear at once, the deflection angle of liquid crystal molecule can't return to original state, apply a voltage but remain into again always to liquid crystal molecule, the hold-up time of the liquid crystal molecule described in the present embodiment is in the time that the driving voltage of described transparent bar-type electrode layer changes, liquid crystal molecule maintains the time of previous state, the hold-up time of liquid crystal molecule is fixed often, generally be about 8ms, and touch electrode layer carries out the time of a touch-control scanning about 3ms left and right, on this basis, the touch of the present embodiment drives the time of process, the second time was preferably and is less than 8ms, more preferably 3ms.
It should be noted that, the hold-up time of liquid crystal molecule may be greater than the time t1 of touch-control scanning, in a timesharing cycle T, reality executes to transparent bar-type electrode layer the difference that the alive time may be less than a timesharing cycle T and touch-control t1 sweep time, as shown in Figure 7.
As shown in figure 10, under two dimensional mode, the type of drive of each electrode layer, in conjunction with the structure of liquid crystal cell, the control method of this liquid crystal cell specifically comprises: under two dimensional mode, and described the 3rd transparency electrode 26 and common electrode 25 ground connection, the 3rd transparency electrode 26 and common electrode 25 do not connect electricity, the state that liquid crystal cell 2 is all-transparent, applies voltage to the first transparency electrode 241 in described touch control unit and the second transparency electrode 243, realizes the detection to touching signals.
It should be noted that, under two dimensional mode, due to transparent bar-type electrode layer ground connection, therefore can not affect touch control detection, in this case, touch control electrode layer is executed to alive mode can be any, can carry out at any time touch-control scanning, and not limit the time of touch-control scanning.In order to simplify control procedure, preferred in the present embodiment, under two dimensional mode, described touch control electrode layer is executed to alive control mode with under 3-D display state, described touch control electrode layer is executed to alive control mode identical, as shown in figure 10.
The liquid crystal cell above embodiment of the present invention being provided and the control method that comprises this liquid crystal cell are described in detail, applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (11)
1. a liquid crystal cell, comprising:
First substrate;
The second substrate being oppositely arranged with described first substrate;
Touch control unit, is arranged on described first substrate, and described touch control unit comprises many first transparency electrodes that arrange along first direction and many second transparency electrodes that arrange along second direction;
Common electrode, is arranged on described second substrate, is oppositely arranged with described touch control unit.
2. the liquid crystal cell as shown in claim 1, is characterized in that, described common electrode is whole structure.
3. the liquid crystal cell as shown in claim 1, is characterized in that, described first direction is mutually vertical with described second direction.
4. the liquid crystal cell as shown in claim 1, is characterized in that, the angle between described first direction and described second direction is between 60 °～90 °.
5. the liquid crystal cell as shown in claim 1, is characterized in that, is also provided with the 3rd transparency electrode at described touch control unit near a side of described common electrode, and described the 3rd transparency electrode and described common electrode can form liquid crystal grating.
6. the control method of liquid crystal cell as claimed in claim 5, is characterized in that, between described the 3rd transparency electrode and described touch control unit, is provided with insulation course.
7. the liquid crystal cell as shown in claim 1, is characterized in that, between described the first transparency electrode and described the second transparency electrode, is provided with insulation course.
8. the liquid crystal cell as shown in claim 1, is characterized in that, described the first transparency electrode is strip structure, and the width of described the second transparency electrode and the overlapping part of described the first transparency electrode is less than not overlapping partial width.
9. control a method for liquid crystal cell as claimed in claim 1, for realize touch controllable function under 3-D display pattern simultaneously, comprising:
A timesharing cycle of 3-D display pattern is divided into the very first time and the second time, the scan period that a wherein said timesharing cycle is described touch control unit, described the second time is less than the hold-up time of liquid crystal molecule and is more than or equal to described touch control unit carries out one-time detection required sweep time to touching signals, the hold-up time of described liquid crystal molecule is in the time that the driving voltage of described the first transparency electrode changes, and liquid crystal molecule maintains the time of previous state;
Within the very first time, by described touch control unit the second transparency electrode ground connection, many described the first transparency electrodes are applied to driving voltage, realize 3-D display; Within the second time, by described common electrode ground connection, the first transparency electrode and the second transparency electrode to described touch control unit apply driving voltage, are keeping realizing touch controllable function under 3-D display state.
10. the control method of liquid crystal cell as claimed in claim 9, is characterized in that, the waveform of the different driving voltage that described the first transparency electrode is applied is the square wave changing with respect to ground state alternating polarity.
The control method of 11. liquid crystal cells as claimed in claim 9, is characterized in that, the ratio value of the described very first time and described the second time is between 1.5-4.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104460094A (en) * | 2015-01-05 | 2015-03-25 | 京东方科技集团股份有限公司 | 3D displaying device and control method thereof |
| CN104777684A (en) * | 2015-04-24 | 2015-07-15 | 京东方科技集团股份有限公司 | Self-capacitance touch control liquid crystal grating as well as preparation method, display screen and display device thereof |
| CN104849886A (en) * | 2015-06-09 | 2015-08-19 | 京东方科技集团股份有限公司 | Display device, method for driving display device and method for manufacturing display device |
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| CN104849886A (en) * | 2015-06-09 | 2015-08-19 | 京东方科技集团股份有限公司 | Display device, method for driving display device and method for manufacturing display device |
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| CN107656406A (en) * | 2017-09-30 | 2018-02-02 | 武汉华星光电半导体显示技术有限公司 | A kind of OLED display screen and display device |
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