CN101655644A - Substrate with touch control function, liquid crystal display and operation method for driving substrate - Google Patents
Substrate with touch control function, liquid crystal display and operation method for driving substrate Download PDFInfo
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- CN101655644A CN101655644A CN200910171102A CN200910171102A CN101655644A CN 101655644 A CN101655644 A CN 101655644A CN 200910171102 A CN200910171102 A CN 200910171102A CN 200910171102 A CN200910171102 A CN 200910171102A CN 101655644 A CN101655644 A CN 101655644A
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Abstract
The invention discloses a substrate with touch control function, a touch control device is arranged on the substrate and comprises a power line, a photodetector and a read line, wherein the photodetector is electrically coupled to the power line and two specifically gate lines in gate lines, and produces different output signals according to different illumination extents; the read line is electrically coupled to the photodetector to output the output signals; the photodetector comprises a read switch and a photosensitive switch, wherein the read switch is electrically coupled to one of the two specifically gate lines so as to determine whether switch-on according to signals transmitted, the photosensitive switch is electrically coupled to the other one of the two specifically gate lines and the power line, and produces different leakage current according to different illumination extents, and the signals on the other one of the two specifically gate lines and the power line are coordinated to control whether the photosensitive switch is operated under close state. The invention also discloses a liquid crystal display with touch control function and an operation method for drivingthe substrate with touch control function.
Description
Technical field
The present invention relates to the touch control detection field, and particularly relevant for a kind of substrate of tool touch controllable function, have the display of touch controllable function and the method for operating that drives the substrate of tool touch controllable function.
Background technology
Along with development of science and technology, flat-panel screens (for example, LCD) because of it has high image quality, volume is little, in light weight and advantage such as applied range, and be widely used in mobile phone, notebook computer, desktop display device and TV or the like various consumption electronic products, and replaced traditional CRT display gradually and become the main flow of display device.
Contactor control device provides a kind of interface of new human-computer interaction, its in the use more intuition, more meet human nature.And contactor control device and flat-panel screens are combined, make flat-panel screens have touch controllable function, be a kind of trend of flat-panel screens development.Existing flat-panel screens general using OPTICAL SENSORS with touch controllable function detect whether touch object is arranged (for example, finger or pointer) touch contactor control device with and corresponding position.And flat-panel screens need be provided with the various signal transmssion lines with the OPTICAL SENSORS electric property coupling, to transmit various signals to OPTICAL SENSORS OPTICAL SENSORS is worked normally.Therefore, the signal transmssion line of setting has taken a large amount of areas, thereby makes the decline of flat-panel screens aperture opening ratio, has lost the brightness of flat-panel screens, and has increased the consumption of power.
Summary of the invention
A purpose of the present invention is to provide a kind of display base plate with touch controllable function, and it has the consumption of less signal transmssion line and power capable of reducing power source.
A further object of the present invention is to provide a kind of flat-panel screens with touch controllable function, can effectively reduce the number of signal transmssion line, and can effectively improve aperture opening ratio.
Another object of the present invention is to provide a kind of contactor control device, it has the consumption of less signal transmssion line and power capable of reducing power source.
Another purpose of the present invention is to provide a kind of method of operating that drives the substrate of tool touch controllable function, and it can utilize less signal transmssion line that driving voltage is provided, to control this OPTICAL SENSORS.
The present invention proposes a kind of display base plate with touch controllable function, comprises many gate lines and at least one contactor control device.Gate line and contactor control device all are arranged on the substrate.Contactor control device comprises at least one read line, at least one power lead, OPTICAL SENSORS and reads driver element.Power lead and read line all are arranged on the substrate, and read line and these gate lines are arranged in a crossed manner.OPTICAL SENSORS is arranged near the staggered place of a specific gate polar curve in these gate lines and a specific read line, and OPTICAL SENSORS comprises read switch and light activated switch.Read switch comprises first path terminal, alternate path end and first control end, whether wherein the alternate path end is electrically coupled to specific read line, can electrically conduct with the alternate path end to control first path terminal and first control end is electrically coupled to the specific gate polar curve.Light activated switch comprises the 3rd path terminal, four-way terminal and second control end, whether wherein the four-way terminal is electrically coupled to first path terminal of read switch, can electrically conduct with the four-way terminal to control the 3rd path terminal and second control end is electrically coupled to one of described power lead.Light activated switch cuts off electrically conducting during the path between the 3rd path terminal and the four-way terminal because of the irradiation degree is different at second control end, the different leakage current of generation degree between the 3rd path terminal and four-way terminal.Read driver element and be electrically coupled to specific read line to read the leakage current that light activated switch produces.Wherein, the 3rd path terminal of light activated switch is electrically coupled in the described gate line on the default gate line except the specific gate polar curve.
The present invention also proposes a kind of LCD with touch controllable function, and it comprises substrate, many gate lines, many data lines, many read lines, a plurality of power lead, a plurality of pixel transistor, a plurality of pixel electrode, OPTICAL SENSORS and reads driver element.Gate line, data line, read line and power lead are arranged on the substrate, thereby and data line and gate line are arranged in a crossed manner mutually that this LCD is divided into a plurality of pixel regions.Pixel transistor is arranged in these pixel regions respectively and is electrically coupled to corresponding gate line and data line respectively, and pixel electrode is arranged at respectively in these pixel regions, and is electrically coupled to corresponding pixel transistor.OPTICAL SENSORS is arranged in one of these pixel regions, and comprises read switch and light activated switch.Read switch comprises first path terminal, alternate path end and first control end, wherein the alternate path end is electrically coupled to the specific read line in these read lines, and whether the specific gate polar curve that first control end is electrically coupled in these gate lines can electrically conduct with the alternate path end to control first path terminal.Light activated switch comprises the 3rd path terminal, four-way terminal and second control end, whether wherein the four-way terminal is electrically coupled to first path terminal of read switch, can electrically conduct with the four-way terminal to control the 3rd path terminal and second control end is electrically coupled to one of described power lead.Light activated switch cuts off electrically conducting during the path between the 3rd path terminal and the four-way terminal because of the irradiation degree is different at second control end, the different leakage current of generation degree between the 3rd path terminal and four-way terminal.Read driver element and be electrically coupled to specific read line to read the leakage current that light activated switch produces.Wherein, the 3rd path terminal of light activated switch is electrically coupled in the described gate line on the default gate line except the specific gate polar curve.
In preferred embodiment of the present invention, above-mentioned default gate line is next bar gate line adjacent with the specific gate polar curve.
In preferred embodiment of the present invention, above-mentioned default gate line is a last gate line adjacent with the specific gate polar curve.
In preferred embodiment of the present invention, above-mentioned OPTICAL SENSORS further comprises first capacitor and second capacitor.Wherein first capacitor electrically is coupled between the 3rd path terminal and four-way terminal of light activated switch, and second capacitor electrically is coupled between second control end and four-way terminal of light activated switch.
In preferred embodiment of the present invention, the above-mentioned driver element that reads comprises charge amplifier, capacitor and on-off element.The first input end of charge amplifier is electrically coupled to specific read line, and its second input end is electrically coupled to reference power source, and its output terminal obtains output voltage according to the signal by the first input end and the second input end gained.Capacitor electrically is coupled between the first input end and output terminal of charge amplifier, and on-off element is electrically coupled between the first input end and output terminal of charge amplifier.
The present invention proposes a kind of contactor control device in addition, and it is arranged on the substrate that comprises many gate lines.Contactor control device comprises power lead, OPTICAL SENSORS and read line.OPTICAL SENSORS is electrically coupled to two specific gate polar curves in power lead and these gate lines, and produces different output signals according to the degree difference of irradiation.Read line is electrically coupled to OPTICAL SENSORS to export above-mentioned output signal.OPTICAL SENSORS comprises read switch and light activated switch.Read switch be electrically coupled to two specific gate polar curves one of them determining whether conducting according to the signal that it was transmitted, and light activated switch be electrically coupled in the two specific gate polar curves another and power lead and because of the different leakage current of irradiation degree difference generation degree.Wherein, the signal on another in the two specific gate polar curves and the power lead is arranged in pairs or groups mutually and whether is operated in closed condition to control this light activated switch.
The present invention also proposes the method for operating of OPTICAL SENSORS in a kind of pixel, and it is applicable to the OPTICAL SENSORS that is arranged in the flat panel.Flat panel comprises many gate lines that be arranged in parallel, and whether each described gate line is opened in order to control more than one pixel switch.OPTICAL SENSORS comprises light activated switch, and light activated switch is different and descend the different leakage current of generation degree in off position according to the degree of irradiation.The aforesaid operations method comprises: make light activated switch be electrically coupled to a specific gate polar curve in a power lead and the described gate line; And the voltage difference of adjusting between specific gate polar curve and the power lead operates in closed condition to keep light activated switch.
The present invention also proposes a kind of method of operating, and in order to drive the substrate with touch controllable function as claimed in claim 1, this method of operating comprises that the voltage difference of adjusting between this specific gate polar curve and this power lead operates under certain magnitude of current state to keep this light activated switch; Transmit a signal value and read signal element to this; And judge whether this OPTICAL SENSORS is covered by object.
Contactor control device of the present invention and LCD provide voltage by read switch and the light activated switch that its original gate line is respectively OPTICAL SENSORS, particularly the source electrode for light activated switch provides voltage by gate line, therefore, LCD with touch controllable function is realizing not needing to be provided with a large amount of signal transmssion lines to provide various signals to OPTICAL SENSORS on the touch controllable function, it has saved the area that is provided with of signal transmssion line, increased the aperture opening ratio of LCD, improved the brightness of LCD, and the required power that provides has been provided.
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and cooperate appended accompanying drawing, be described in detail below.
Description of drawings
For above-mentioned and other purposes of the present invention, feature, advantage and embodiment can be become apparent, appended the description of the drawings is as follows:
Fig. 1 illustrate the flat-panel screens that has touch controllable function for one embodiment of the invention is disclosed schematic equivalent circuit.
Fig. 2 illustrates to the disclosed OPTICAL SENSORS of one embodiment of the invention and reads the schematic equivalent circuit of driver element.
Fig. 3 illustrates to the disclosed OPTICAL SENSORS of another embodiment of the present invention and reads the schematic equivalent circuit of driver element.
Fig. 4 illustrates the schematic equivalent circuit that has the flat-panel screens of touch controllable function for another embodiment of the present invention is disclosed.
Fig. 5 illustrates the process flow diagram of the method for operating of the interior OPTICAL SENSORS of pixel according to an embodiment of the invention.
Wherein, Reference numeral
100,200: flat-panel screens 110: substrate
111,211: pixel transistor 112: pixel electrode
120,180,220: OPTICAL SENSORS 121,186,221: read switch
1211,2211: the grid 1212 of read switch: the source electrode of read switch
1213: the drain electrode 126,226 of read switch: light activated switch
1261: the grid 1262,1862,2262 of light activated switch: the source electrode of light activated switch
1263: 128: the first electric capacity of the drain electrode of light activated switch
131: charge amplifier 132: capacitor
133: on-off element G (n-1), Gn, G (n+1): gate line
D (n-1), Dn, D (n+1): data line Vg: power lead
R (n-1), Rn: read line Vout: output voltage
Vr: reference voltage
Embodiment
Referring to Fig. 1, it shows a kind of schematic equivalent circuit with flat-panel screens of touch controllable function that one embodiment of the invention proposes.In the present embodiment, flat-panel screens 100 for example is a LCD, comprises another substrate (figure does not show) and the liquid crystal layer between two substrates (figure does not show) of substrate 110, corresponding setting with this substrate.Flat-panel screens 100 comprises many gate lines that are arranged on the substrate 110, for example G (n-1), G (n) and G (n+1), and many data lines, for example D (n-1), D (n) and D (n+1).These gate lines and these data lines are mutually arranged in a crossed manner and flat-panel screens 100 is divided into a plurality of pixel regions, for example, gate lines G (n-1), G (n) and G (n+1) intersect mutually with data line D (n-1), D (n) and D (n+1) and have constituted 4 pixel regions.Flat-panel screens 100 is provided with pixel transistor 111 and pixel electrode 112 respectively in each pixel region, wherein pixel transistor 111 is electrically coupled to gate line corresponding with it and data line respectively, and pixel electrode 112 is electrically coupled to the pixel transistor corresponding with it 111.Flat-panel screens 100 is passed to the on off state of pixel transistor 111 with control pixel transistor 111 by the gate line of correspondence with signal, and when pixel transistor 111 is in conducting, by corresponding data line data-signal is passed on the pixel electrode 112 by pixel transistor 111, thereby makes flat-panel screens 100 show corresponding picture.This technology is well known to those skilled in the art, and does not repeat them here.
In order to make flat-panel screens 100 have touch controllable function, flat-panel screens 100 further comprises OPTICAL SENSORS 120, power lead Vg and read line R (n-1), the R (n) that constitutes contactor control device, and it all is arranged on the substrate 110.Wherein, in the present embodiment, each pixel region is provided with an OPTICAL SENSORS 120 respectively, and read line R (n-1), R (n) intersect mutually with gate lines G (n-1), G (n) and G (n+1) respectively.The present invention is not as restriction, and those skilled in the art can also in several adjacent pixel region, only be provided with OPTICAL SENSORS 120 according to the actual requirements in some specific pixel region.See also Fig. 2, the schematic equivalent circuit that it shows the OPTICAL SENSORS in the pixel region shown in Figure 1 and reads driver element.OPTICAL SENSORS 120 comprises read switch 121 and light activated switch 126.Preferably, read switch 121 is thin film transistor (TFT) (thin-film transistor, TFT), for example MOS (metal-oxide-semiconductor) memory (metal-oxide semiconductor field-effect transistor, MOSFET) or other various transistors.The present invention is that example is introduced the present invention with the MOS (metal-oxide-semiconductor) memory, but the present invention is not limited thereto.
The grid 1211 of read switch 121 (or being called first control end) is electrically coupled to the on off state of a gate lines G (n) with control read switch 121, its 1213 (or being called the alternate path end) that drained, be electrically coupled to a read line R (n), and its source electrode 1212 (or being called first path terminal) is electrically coupled to the drain electrode 1263 (or being called the four-way terminal) of light activated switch 126.The grid 1261 of light activated switch 126 (or being called second control end) is electrically coupled to the on off state of power lead Vg with control light activated switch 126, its source electrode 1262 (or being called the 3rd path terminal) is electrically coupled to another gate line, as next bar gate lines G (n+1) adjacent with gate lines G (n).And can being electrically coupled to one, read line R (n) reads driver element 130.Wherein, light activated switch 126 because of the difference of irradiation degree when it is in closed condition, the different leakage current of generation degree between its drain electrode 1263 and source electrode 1262.
Further, OPTICAL SENSORS 120 can further comprise first capacitor 128 and second capacitor 129.Wherein, first capacitor 128 is electrically coupled between the drain electrode 1263 (or being called the four-way terminal) and source electrode 1262 (or being called the 3rd path terminal) of light activated switch 126, and second capacitor 129 is electrically coupled between the drain electrode 1263 (or being called the four-way terminal) and grid 1261 (or being called second control end) of light activated switch 126.Wherein, the leakage current that produced by light activated switch 126 of first capacitor 128 and second capacitor 129 carries out the charge/discharge operation.Can comprise charge amplifier 131, capacitor 132 and on-off element 133 and read driver element 130.Wherein, the first input end of charge amplifier 131 is electrically coupled to read line R (n), and its second input end is electrically coupled to reference power source Vr, and its output terminal is in order to obtain an output voltage V out according to the signal by the first input end and the second input end gained.Capacitor 132 is electrically coupled between the first input end and output terminal of charge amplifier 131, and on-off element 133 is in parallel with capacitor 132, and promptly it also is electrically coupled between the first input end and output terminal of charge amplifier 131.
The flat-panel screens 100 that the embodiment of the invention is disclosed to have a touch controllable function is respectively the grid 1261 of light activated switch 126 and source electrode 1262 by gate lines G (n+1) and power lead Vg and voltage is provided and makes therebetween voltage difference Vgs always less than its critical value (threshold) voltage.So, then light activated switch 126 can maintain does not influence the leakage current that light activated switch 126 is produced under the closed condition.When opening read switch 121, be that read switch 121 is when being in conducting state, can be passed to read line Rn this moment with a signal value, in the present embodiment, this signal value be preferably that leakage current that light activated switch 126 produces carries out charge/discharge to electric capacity 128,129 and the result, read switch 121 by conducting is passed to read line Rn, and is read driver element 130 and reads.Read driver element 130 and can whether (for example to judge light activated switch 126 according to the result who is read (or being called signal value) by object, finger or felt pen) cover, promptly can judge OPTICAL SENSORS 120 residing these pixel regions according to this and whether be touched.Such as read driver element 130 how technology such as its signal that reads of interpretation do not repeat them here for known to the person of present technique field.
According to above-mentioned, the contactor control device that is mainly constituted disclosed in this invention by OPTICAL SENSORS 120, it is arranged on the substrate 110 with many gate lines, utilize flat-panel screens 100 original gate lines G (n) and G (n+1) to provide various drive signals for OPTICAL SENSORS 120, thereby contactor control device and flat-panel screens are combined, make flat-panel screens 100 have touch controllable function.In addition, it is to be noted, the contactor control device that is mainly constituted of the present invention by OPTICAL SENSORS 120, except the LCD of the present invention in aforementioned proposition, can also be applied to for example be: exciting light diode (organic light emitting device is arranged, OLED), the flat-panel screens of flexible display other types such as (flexible display), as long as flat-panel screens has many gate lines and can use OPTICAL SENSORS proposed by the invention, thereby contactor control device and flat-panel screens are combined.
In addition, have in the flat-panel screens 100 of touch controllable function although the embodiment of the invention shown in Figure 1 is disclosed, the all corresponding OPTICAL SENSORS of each pixel region, but, it will be understood by those skilled in the art that, OPTICAL SENSORS can be corresponding to a plurality of pixel regions, for example, intersect mutually in gate lines G (n-1), G (n) and G (n+1) and data line D (n-1), D (n) and D (n+1) and in 4 pixel regions constituting an OPTICAL SENSORS can only be set.
See also Fig. 3, the schematic equivalent circuit that it shows the disclosed photosensitive sensor of another embodiment of the present invention and reads driver element.The OPTICAL SENSORS 180 of present embodiment is similar to OPTICAL SENSORS 120 shown in Figure 2, its difference is that the source electrode 1862 of light activated switch 186 of the OPTICAL SENSORS 180 of present embodiment is electrically connected to a last gate lines G (n-1) adjacent with gate lines G (n), provides source voltage by gate lines G (n-1) for the source electrode 1862 of light activated switch 186.
See also Fig. 4, it shows the disclosed schematic equivalent circuit with flat-panel screens of touch controllable function of another embodiment of the present invention.Flat-panel screens 200 is identical with flat-panel screens 100 shown in Figure 1, and its difference is that the gate line of grid 2211 electric property couplings of the read switch 221 of the OPTICAL SENSORS 220 in each pixel region of flat-panel screens 200 is another the adjacent gate lines of gate line of pixel transistor 211 electric property couplings in the pixel region therewith.For example corresponding to the pixel region of gate lines G n and data line Dn, its pixel transistor 211 is electrically coupled to gate lines G n, and the grid 2211 of the read switch 221 of its OPTICAL SENSORS 220 is electrically coupled to next bar gate lines G (n+1) adjacent with gate lines G n, and the source electrode 2262 of light activated switch 226 is electrically coupled to gate lines G n.
In addition, the present invention also provides the method for operating of OPTICAL SENSORS in a kind of pixel, and it can be used to drive has as Fig. 1 or the described flat-panel screens of Fig. 4.See also Fig. 5, it shows the process flow diagram of aforesaid operations method.The aforesaid operations method comprises: a specific gate polar curve and the voltage difference between the power lead of an adjustment and a light activated switch electric property coupling operate under certain magnitude of current state to keep above-mentioned light activated switch; Transmit a signal value to and read signal element; And judge whether above-mentioned OPTICAL SENSORS is covered by object.
Wherein, adjust and the above-mentioned specific gate polar curve of above-mentioned light activated switch electric property coupling and the voltage difference between the power lead operate in step under certain magnitude of current state to keep above-mentioned light activated switch, provide a magnitude of voltage less than above-mentioned OPTICAL SENSORS critical value (threshold) voltage by above-mentioned specific gate polar curve and said power.In addition, this that transmits this signal value reads the step of driver element, comprises a read switch of opening above-mentioned OPTICAL SENSORS, and above-mentioned steps further comprise above-mentioned light activated switch carried out charge/discharge to an electric capacity and the result be passed to a read line.Judge that the result's that step that whether above-mentioned OPTICAL SENSORS covered by object gets by charge/discharge size judges whether this OPTICAL SENSORS is covered by object.
Comprehensively above-mentioned, the present invention is electrically coupled on wherein gate line of power lead and display device light activated switch, and operates in closed condition by the voltage difference of adjusting between gate line and the power lead to keep light activated switch.So can save the layout of some circuit, no matter on manufacturing cost or aperture opening ratio, can improve to some extent.
In sum, the flat-panel screens with touch controllable function disclosed in this invention utilize OPTICAL SENSORS the leakage current that light activated switch produced difference and judge whether this OPTICAL SENSORS is touched so that LCD has touch controllable function by touch object.And, flat-panel screens disclosed in this invention is passed through its original gate line as gate line, and the read switch and the light activated switch that are respectively OPTICAL SENSORS by two adjacent gate lines provide voltage, particularly the source electrode for light activated switch provides voltage by gate line, therefore, flat-panel screens with touch controllable function is realizing not needing to be provided with a large amount of signal transmssion lines to provide various signals to OPTICAL SENSORS on the touch controllable function, it has saved the area that is provided with of signal transmssion line, increased the aperture opening ratio of flat-panel screens, improve the brightness of flat-panel screens, and reduced relevant power.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (16)
1. the substrate with touch controllable function is characterized in that, comprising:
Many gate lines are arranged on the substrate;
At least one contactor control device is arranged on this substrate, and this contactor control device comprises:
One power lead is arranged on this substrate;
At least one read line is arranged on this substrate and arranged in a crossed manner with described gate line accordingly;
One OPTICAL SENSORS is arranged near the staggered place of specific gate polar curve in the described gate line and the specific read line in the described read line, and this OPTICAL SENSORS comprises:
One read switch comprises:
One first path terminal;
One alternate path end is electrically coupled to this specific read line; And
One first control end is electrically coupled to this specific gate polar curve; And
One light activated switch comprises:
One the 3rd path terminal;
One four-way terminal is electrically coupled to this first path terminal; And
One second control end is electrically coupled to this power lead;
And
One reads driver element, is electrically coupled to this specific read line;
Wherein, the 3rd path terminal of this light activated switch is electrically coupled in the described gate line on the default gate line except this specific gate polar curve.
2. substrate as claimed in claim 1 is characterized in that, this default gate line is next bar gate line adjacent with this specific gate polar curve.
3. substrate as claimed in claim 1 is characterized in that, this default gate line is a last gate line adjacent with this specific gate polar curve.
4. substrate as claimed in claim 1 is characterized in that, this OPTICAL SENSORS further comprises:
One first capacitor is electrically coupled between the 3rd path terminal and four-way terminal of this light activated switch; And
One second capacitor is electrically coupled between this second control end and this four-way terminal of this light activated switch.
5. substrate as claimed in claim 1 is characterized in that, this reads driver element and comprises:
One charge amplifier comprises:
One first input end is electrically coupled to this specific read line;
One second input end is electrically coupled to a reference power source; And
One output terminal obtains an output voltage according to the signal by this first input end and this second input end gained;
One capacitor is electrically coupled between this first input end and this output terminal of this charge amplifier; And
One on-off element is electrically coupled between this first input end and this output terminal of this charge amplifier.
6. LCD with touch controllable function is characterized in that it comprises:
Substrate as claimed in claim 1;
Another substrate, correspondence are arranged at the opposite side of this substrate; And
One liquid crystal layer is arranged between this two substrates.
7. LCD as claimed in claim 6 is characterized in that, comprising:
Many data lines are divided into a plurality of pixel regions thereby be arranged on this substrate and with described gate line is arranged in a crossed manner mutually with this LCD;
A plurality of pixel transistors are arranged at respectively and also are electrically coupled to corresponding gate line and data line in the described pixel region respectively;
A plurality of pixel electrodes are arranged at respectively in the described pixel region, and one of described pixel electrode is electrically coupled to a corresponding person of described pixel transistor.
8. LCD as claimed in claim 7 is characterized in that,
This OPTICAL SENSORS is arranged in one of described pixel region.
9. LCD as claimed in claim 6 is characterized in that, this default gate line is a last gate line adjacent with this specific gate polar curve.
10. LCD as claimed in claim 8 is characterized in that, this gate line of this pixel transistor electric property coupling is a same gate line in the pixel region at this specific gate polar curve and this read switch place.
11. LCD as claimed in claim 8 is characterized in that, this specific gate polar curve is this gate line another gate line adjacent one another are of this pixel transistor electric property coupling in the pixel region with this read switch place.
12. a method of operating is characterized in that, in order to drive the substrate with touch controllable function as claimed in claim 1, this method of operating comprises:
The voltage difference of adjusting between this specific gate polar curve and this power lead operates under certain magnitude of current state to keep this light activated switch;
Transmit a signal value and read signal element to this; And
Judge whether this OPTICAL SENSORS is covered by object.
13. method of operating as claimed in claim 12, it is characterized in that, the voltage difference of adjusting between this specific gate polar curve and this power lead operates under certain magnitude of current state to keep this light activated switch, provides a magnitude of voltage less than this OPTICAL SENSORS critical value voltage by this specific gate polar curve and this power lead.
14. method of operating as claimed in claim 12 is characterized in that, transmits this signal value and reads signal element to this, comprises to open this read switch.
15. method of operating as claimed in claim 13 is characterized in that, transmits this signal value and reads signal element to this, more comprise this light activated switch carried out charge/discharge to an electric capacity and the result be passed to read line.
16. method of operating as claimed in claim 15 is characterized in that, judges that whether this OPTICAL SENSORS judged by the size that object covers the result who gets by charge/discharge whether this OPTICAL SENSORS is covered by object.
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| CN2009101711029A CN101655644B (en) | 2009-09-04 | 2009-09-04 | Substrate with touch control function, liquid crystal display and operation method for driving substrate |
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| CN2009101711029A CN101655644B (en) | 2009-09-04 | 2009-09-04 | Substrate with touch control function, liquid crystal display and operation method for driving substrate |
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| CN102566836A (en) * | 2011-10-24 | 2012-07-11 | 友达光电股份有限公司 | Light-sensitive touch control circuit and liquid crystal display thereof |
| CN102621729A (en) * | 2011-12-16 | 2012-08-01 | 友达光电股份有限公司 | Touch pixel array substrate, touch display panel and touch pixel structure |
| CN102915708A (en) * | 2012-08-03 | 2013-02-06 | 友达光电股份有限公司 | Display with sensing function and operation method thereof |
| CN103592791A (en) * | 2013-08-28 | 2014-02-19 | 友达光电股份有限公司 | Substrate with touch control function and display adopting same |
| CN103699264A (en) * | 2013-12-24 | 2014-04-02 | 京东方科技集团股份有限公司 | Touch circuit, touch substrate and touch display device |
| CN104914602A (en) * | 2015-07-10 | 2015-09-16 | 京东方科技集团股份有限公司 | Display device and array substrate |
| CN105071797A (en) * | 2015-05-21 | 2015-11-18 | 友达光电股份有限公司 | Photosensitive circuit and operation method thereof |
| CN112991972A (en) * | 2021-02-26 | 2021-06-18 | 厦门天马微电子有限公司 | Display panel and light-emitting device transfer method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102566836A (en) * | 2011-10-24 | 2012-07-11 | 友达光电股份有限公司 | Light-sensitive touch control circuit and liquid crystal display thereof |
| US8730211B2 (en) | 2011-10-24 | 2014-05-20 | Au Optronics Corp. | Optical touch circuit and liquid crystal display device using same |
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| CN102915708A (en) * | 2012-08-03 | 2013-02-06 | 友达光电股份有限公司 | Display with sensing function and operation method thereof |
| CN102915708B (en) * | 2012-08-03 | 2015-03-04 | 友达光电股份有限公司 | Display with sensing function and operation method thereof |
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| CN103592791A (en) * | 2013-08-28 | 2014-02-19 | 友达光电股份有限公司 | Substrate with touch control function and display adopting same |
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| CN105071797A (en) * | 2015-05-21 | 2015-11-18 | 友达光电股份有限公司 | Photosensitive circuit and operation method thereof |
| CN105071797B (en) * | 2015-05-21 | 2018-03-09 | 友达光电股份有限公司 | Photosensitive circuit and operation method thereof |
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