CN102314247A - Contact panel - Google Patents
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- CN102314247A CN102314247A CN2010102207287A CN201010220728A CN102314247A CN 102314247 A CN102314247 A CN 102314247A CN 2010102207287 A CN2010102207287 A CN 2010102207287A CN 201010220728 A CN201010220728 A CN 201010220728A CN 102314247 A CN102314247 A CN 102314247A
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Abstract
A kind of contact panel comprises backlight module, array base palte and sensing cell.Said array base palte also comprises gate drivers, many gate lines, many data lines, many first read lines and a plurality of first photosensitive unit.Said gate line and data line are in order to define in pel array and the said gate line dummy gate line and do not couple said gate drivers and other gate line couples said gate drivers.Said first photosensitive unit couples said dummy gate line and each first photosensitive unit is exported first photocurrent through one first read line.Said sensing cell couples said first read line and said backlight module and adjusts said brightness of backlight module according to said first photocurrent.
Description
Technical field
The present invention relates to a kind of touch control display apparatus, particularly a kind of ability accommodation low power consuming contact panel backlight.
Background technology
LCD is present widely used display device; Maturation along with the Touch Screen technology; Make various electronic apparatus, for example multimedia player, mobile phone and PDA(Personal Digital Assistant) almost all are equipped with the touch control type LCD screen to increase ease of use.
LCD comprises backlight module required light source so that show image to be provided, and the power of backlight module consumption has accounted for the quite high ratio of LCD total consumption power.Therefore, the power save mode of most of LCD is how to reduce the power consumption of backlight module.
Traditional power save mode for example has provides the brightness of control backlight module brightness adjustment knob, and the user can adjust required brightness voluntarily according to behaviour in service by this; Yet if LCD is equipped in the portable electron device, the inconvenience that the user possibly adjust brightness of backlight module thereby cause using according to operating environment often is not suitable for portable electron device so knob is adjusted in brightness.
Another kind of existing power save mode is the pel array outside at least one optical sensor of extra making (photo sensor) of comprising in LCD intensity variation with the sensitive context light source, and according to the intensity variation adjustment brightness of backlight module of surround lighting.For example Fig. 1 shows a kind of top view of infrabasal plate of available liquid crystal display 9; This LCD 9 is except comprising source electrode driver 91, gate drivers 92 and pel array 93; Also comprise at least one optical sensor 94 and be formed at this pel array 93 outsides extraly, also export photocurrent according to this in order to the intensity variation of sense ambient light; Control module (not illustrating) then can be according to the variation adjustment brightness of backlight module of this photocurrent.Yet this optical sensor 94 of extra making can improve cost of manufacture and increase the volume of LCD.
In view of this, be necessary to propose a kind of touch control display apparatus, the luminosity that it can adjust backlight module automatically according to the variation of surround lighting need not increase device volume and can increase ease of use and reduce integral body and consume energy.
Summary of the invention
A purpose of the present invention is to propose a kind of touch control display that comprises contact panel, and its utilization is coupled to photocurrent that a plurality of photosensitive unit of dummy gate line the exports foundation as the adjustment back light source brightness, can effectively reduce the integral body power consumption of contact panel.
Another purpose of the present invention is to propose a kind of touch control display that comprises contact panel; It utilizes in the contact panel has promptly made but untapped dummy gate line couples a plurality of photosensitive units originally; Back light source brightness is also adjusted in variation with sense ambient light according to this; So need not take additional space and use extra process, can use cost of manufacture that reduces contact panel and the volume that need not increase contact panel.
The present invention proposes a kind of contact panel, comprises gate drivers, array base palte and sensing cell.This array base palte also comprises many gate lines, many data lines, many first read lines, many second reading line takings, a plurality of first photosensitive unit and a plurality of detecting units.This gate line and data line are in order to define pel array, and wherein the dummy gate line does not couple other gate line of this gate drivers and then couples this gate drivers.This first photosensitive unit couples this dummy gate line, and each first photosensitive unit is exported first detection signal through first read line.Each detecting unit couples the second reading line taking, and through corresponding second reading line taking to export second detection signal.This sensing cell couples this first read line, second reading line taking and backlight module, and judges the incident of touching according to this first detection signal this brightness of backlight module of adjustment and according to this second detection signal.
The present invention proposes a kind of optical touch control panel in addition, comprises gate drivers, array base palte and sensing cell.This array base palte also comprises a plurality of pixels and many gate lines.This pixel is with array configurations, and at least a portion pixel also comprises pixel electrode and photosensitive unit.This gate line is arranged in parallel to define every row pixel; The pixel electrode and the photosensitive unit that wherein comprise each pixel of this photosensitive unit couple different gate lines; Article one or the last item gate line only couple the photosensitive unit of row pixel and do not couple pixel electrode in this gate line, the photosensitive unit of the row pixel that couples with this article one or the last item gate line in order to ambient light to export first photocurrent.This control module couples backlight module and this array base palte, adjusts this brightness of backlight module relatively according to the variation of this first photocurrent.
In the optical touch control panel of the present invention; For keeping characteristics such as circuit symmetry and load matched; A plurality of first photosensitive units (photo sensor) that are coupled to dummy gate line (dummy gate line) are formed when making pel array, so must not utilize the making of additional technique and space.In addition, can receive more tangible first photocurrent variations, be coupled to sensing cell via at least one signal read line again after the preferably first parallel connection of this first read line for making sensing cell; The number of signal read line can be according to the number decision of the source region that can independently control in the backlight module.
Description of drawings
Fig. 1 shows the top view of the infrabasal plate of available liquid crystal display;
Fig. 2 shows the block diagram of the contact panel of the embodiment of the invention;
Fig. 3 a shows the part synoptic diagram of the contact panel of one embodiment of the invention;
Fig. 3 b shows the part synoptic diagram of the contact panel of another embodiment of the present invention;
The partial circuit figure of first photosensitive unit in the contact panel of Fig. 4 a～4c demonstration embodiment of the invention.
Embodiment
In order to let above and other objects of the present invention, characteristic and the advantage can be more obvious, hereinafter will combine accompanying drawing, elaborate as follows.In explanation of the present invention, identical member is stated in this with identical symbolic representation in advance.
In addition, in each icon of the present invention, only shown partial component and having omitted and member that the present invention explanation is not directly related.
It must be emphasized that; Though being embodiment with the backlight, the present invention explains; But it is not that backlight one speech is not to mean the back side that light source module one is positioned pel array in the instructions in order to qualification the present invention, and for example the present invention also is applicable to other embodiment of front light-source.
With reference to shown in Figure 2, the block diagram of the contact panel 1 in the touch control display of its demonstration one embodiment of the invention.This contact panel 1 is optics embedded touch panel (photosensitive in-cell touch panel or photo-type in-cell touch device); It comprises at least one array base palte 110, a sensing cell 111, a light source driving units 12, a gate drivers 1121, one source pole driver (figure does not show for the sake of clarity) and a backlight module 13, and it is illustrated in the below of this array base palte 110; Wherein this light source driving units 12 drives this backlight module 13 so that this contact panel 1 required light source when showing to be provided according to the control signal of this sensing cell 111; In addition, this gate drivers 1121 provide sweep signal give many gate lines 1122 ', source electrode driver then provides drawing frame data to give many data lines 1125, so this for prior art so do not giving unnecessary details in this.
Want in addition special one carry be; Though the embodiment of the invention is explanation with optics embedded touch panel (as shown in Figure 2 its have optical element-second photosensitive unit 1123 '); Yet those skilled in the art be when can understanding, and main inventive features of the present invention is also applicable to the contact panel of other form; For example contact embedded touch panel (the i.e. non-optical formula element of second photosensitive unit 1122 ' can be; For example traditional contact touch-control structure/element), moreover the present invention is also non-exceeds to be applied to the embedded touch panel, and it is also applicable to external hanging type contact panel etc.In addition, this gate drivers 1121 and/or source electrode driver (figure do not show) can integration and making on this array base palte 110 or be independent of outside this array base palte 110 and and be electrically connected with it.In the present invention, this backlight module 13 can comprise any suitable light source, for example a plurality of light emitting diodes or at least one cold-cathode tube etc., but be not limited thereto.
This array base palte 110 comprises pel array 112, this pel array 112 comprise many gate lines (comprise dummy gate line (dummy gate line) 1122 and many gate lines 1122 '), many data lines 1125, many first read line R ', many second reading line taking R, a plurality of first photosensitive unit 1123 and a plurality of second photosensitive units 1123 '; Wherein this first photosensitive unit 1123 and second photosensitive unit 1123 ' for example comprise thin film transistor (TFT) (TFT), optical diode (photo diode) or photoresistance optical sensors (photo sensor) such as (light sensitive resistor) is in order to sensor light intensity and produce photocurrent (detection signal).This gate line and this data line 1125 (intersection) interlaced with each other are arranged in order to define a plurality of pixels of this pel array 112.Among Fig. 2, this dummy gate line 1122 is positioned at this pel array 112, and does not couple this gate drivers 1121, this gate drivers 1121 of other gate line 1122 ' then couple.In addition, in this embodiment, a plurality of first photosensitive units 1123, a plurality of second photosensitive unit 1123 ' and dummy gate line 1122 all be positioned at the picture-display-region (display area) of contact panel 1; But in another embodiment, 1122 on dummy gate line can design in the non-display area (non-display area) in contact panel 1.Moreover, in this embodiment, dummy gate line 1122 adjacent and be parallel to this gate line 1122 ' article one gate line, and be positioned at the top of this article one gate line that is the place, top that is positioned at pel array 112 as shown in Figure 2; Among another embodiment, dummy gate line 1122 can be designed to adjacent and be parallel to this grid 1122 ' the last item gate line, and be positioned at the below of this last item gate line, promptly be positioned at place, below (figure does not show) like Fig. 2 pel array 112.
This first photosensitive unit 1123 is arranged in the row shape and couples this dummy gate line 1122, and each first photosensitive unit 1123 is through one first read line R ' output, the first photocurrent I
P1, this first photocurrent I
P1Conflux to signal read line 1124 with export first photocurrent with; Mandatory declaration be the first photocurrent I of the present invention explanation
P1Refer to photocurrent or detection signal that the 1123 sensitive context light time of this first photosensitive unit are produced, this first photocurrent (detection signal) also confluxes to signal read line 1124 and transfers to sensing cell 111 through the first read line R ' and carry out interpretation a little less than the environmental light intensity.Each second photosensitive unit 1123 ' couple gate line 1122 ' with second reading line taking R, its receive the gate line 1122 that coupled ' control and through corresponding second reading line taking R to export the second photocurrent I
P2This first photocurrent I wherein
P1Change this second photocurrent I corresponding to the external environment light intensity
P2Then in order to the position coordinates of identification indicant (, not illustrating) with respect to this contact panel 1 like finger or light pen etc.This first read line R ' and second reading line taking R can form when forming this pel array 112 simultaneously, thereby need not make through additional technique; Simultaneously, these a plurality of first photosensitive units 1123, a plurality of second photosensitive unit 1123 ' and dummy gate line 1122 all be arranged in the pel array 112 originally, so also need not take additional space.
111 of sensing cells include analog digital converting unit (ADC) 20 and control module 30 at least.Analog digital converting unit 20 comes from the first photocurrent I of many first read line R ' with this
P1The second photocurrent I with many second reading line taking R
P2Convert digital signal into and carry out calculation process to provide to this control module 30.Then, this sensing cell 111 produces control signal and is sent to the brightness of light source driving units 12 with further control backlight module 13.Special one what carry is that analog digital converting unit in the sensing cell 111 20 can be integrated into sensor chip (IC) with control module 30 or the mode that is respectively with two individual chips or circuit appears, but is not limited thereto at this.In another embodiment, analog digital converting unit 20, control module 30 and light source driving units 12 also can be integrated into control chip.
In the one embodiment aspect, this dummy gate line 1122 is connected to fixed voltage source V, and its magnitude of voltage is set at the opening that keeps this first photosensitive unit 1123, and this first photosensitive unit 1123 can continuously be exported this first photocurrent I by this
P1, but among the present invention, the voltage that dummy gate line 1122 is coupled is not limited to this.With respect to first photosensitive unit 1123; Second photosensitive unit 1123 ' opening then be controlled by gate drivers 1121; And because of gate drivers 1121 in order output scanning signal (scan signal) with drive (activation) each bar gate line 1122 ', therefore second photosensitive unit 1123 ' can't continuously open like first photosensitive unit 1123.
Other is implemented in the aspect; The sweep signal control that this first photosensitive unit 1123 also can be exported with this gate drivers 1121 of other gate line 1122 ' receive jointly; So that during this dummy gate line 1122 of this sweep signal activation, this sensing cell 111 sides receive the surround lighting change information of contact panel; For example; This dummy gate line 1122 can with this article one gate line electric coupling; Thereby this gate drivers 1121 simultaneously activation dummy gate line 1122 and article one gate line (this moment this dummy gate line be designed to adjacent to this gate line 1122 ' article one gate line and be positioned at the top of this article one gate line) or this dummy gate line 1122 can with the last item gate line electric coupling, thereby this gate drivers 1121 simultaneously activation dummy gate line 1122 and this last item gate line (this moment this dummy gate line 1122 be designed to adjacent to this gate line 1122 ' the last item gate line and be positioned at the below of this last item gate line).
Because in the existing optical touch control panel; For make pel array structural symmetry and make load be able to the coupling; Can article one or the last item of gate line be made as the dummy gate line; This dummy gate line is not used when contact panel is operated in the existing structure, that is it will not have any driving function or other further substantial function.The present invention promptly is the framework that utilizes this dummy gate line; Further the control photosensitive unit is to detect the surround lighting of contact panel; And then dynamically adjust back light source brightness in view of the above; For example, when the surround lighting grow, back light source brightness is downgraded or when surround lighting changes weak, backlight illumination is increased, to reach energy-conservation purpose.Compared to prior art; The present invention increases by one group of first read line R ' parallel with second reading line taking R again; And this dummy gate line 1122 is coupled to the opening (detected state) of fixed voltage source V with a plurality of first photosensitive units 1123 of keeping being connected to this dummy gate line 1122; Perhaps this dummy gate line 1122 is coupled to gate drivers 1121, first photosensitive unit 1123 is controlled by the sweep signal that gate drivers 1121 is exported.
Through analog digital converting unit (ADC) 20, this comes from the first photocurrent I of the first read line R ' respectively
P1And the second photocurrent I of second reading line taking R
P2Be converted into digital signal to provide to control module 30.30 of this control modules are according to this first photocurrent I
P1The brightness of this backlight module 13 is also controlled in the variation of judgement environment light source according to this.In for example a kind of enforcement aspect; These control module 30 outputs; But be not limited to; Pulse-length modulation (PWM) control signal to of the brightness of this light source driving units 12 with control backlight module 13, for example, the current value or the magnitude of voltage that input to backlight module 13 through change are to control the luminosity of its light source.Control module 30 also can be according to this second photocurrent I
P2The incident of touching of judgement indicant (not illustrating, like finger or light pen) or coordinate position are carried out corresponding action to control this contact panel 1.In addition, this first photocurrent I
P1And the second photocurrent I
P2Also can handle respectively by different control units or processing unit.
Shown in Fig. 3 a, it shows the part synoptic diagram of the contact panel of one embodiment of the invention, and it is the array base palte 110 of this contact panel 1.Be formed with many gate lines on this array base palte 110 and (comprise dummy gate line 1122 and other gate lines G
1～G
n), many first read line R ', a plurality of first photosensitive unit 1123, many data line D
1～D
m, many second reading line taking R
1～R
6, a plurality of second photosensitive units 1123 ' and gate drivers 1121; Wherein the number of this circuit and element is merely exemplary, is not in order to limit the present invention.
This gate line (comprises dummy gate line 1122 and other gate lines G
1～G
n) and this data line D
1～D
mArrangement definition pel array 112 interlaced with each other.The pixel switch element 1126 (for example thin film transistor (TFT)) that each pixel of this pel array 112 also comprises pixel electrode 1127 and is electrically connected with this pixel electrode; In addition at least a portion pixel be coupled with first photosensitive unit 1123 or second photosensitive unit 1123 '; The pixel electrode and the photosensitive unit that wherein comprise each pixel of photosensitive unit couple different gate lines respectively; So article one or the last item gate line can form the photosensitive unit that only couples the row pixel and the situation that does not couple any pixel switch element or pixel electrode in this gate line, and this article one or the last item gate line are the defined dummy gate line 1122 of the present invention.This first photosensitive unit 1123 couples this dummy gate line 1122 and each first photosensitive unit 1123 is coupled to this sensing cell 111 through one first read line R ', and carries out analog/digital conversion and handle; Be coupled to this sensing cell 111 through signal read line 1124 again after the preferably first parallel connection of this first read line R ', so that the first photocurrent I that each first read line R ' is exported
P1Reach this sensing cell 111 after the addition again and use and obtain bigger photocurrent, in order to interpretation.In this embodiment, the quantity of the first read line R ' equals the quantity of second reading line taking R, but is not limited thereto, and the quantity of the first read line R ' will depend on the quantity that first sensing cell 1123 is provided with basically.In present embodiment, the sum of all read lines will be roughly the twice of traditional contact panel.
This gate drivers 1121 couples this gate lines G
1～G
n, G wherein
1For example as article one sweep trace and G
nBe the last item sweep trace, that is when this gate drivers 1121 in regular turn the output scanning signal to this gate lines G
1～G
nThe time, from gate lines G
1Begin and the gate lines G that arrives
nTo accomplish the single pass program.This second reading line taking R
1～R
6Be coupled to this sensing cell 111 at last.Each second photosensitive unit 1123 ' be coupled to gate lines G and second reading line taking R; When this gate drivers 1121 activations (enable) row gate lines G, be coupled to second photosensitive unit 1123 of corresponding gate line ' then through corresponding this second photocurrent of second reading line taking R output I
P2Scrutablely be, this first read line R ' preferably with this second reading line taking R
1～R
6Or the existing D of data
1～D
mParallel, this signal read line 1124 is preferably parallel with this gate line, with problems such as the Electrostatic Discharge avoiding being caused because of cross-line and stray capacitances.
Shown in Fig. 4 a to 4b, in a kind of enforcement aspect, this first photosensitive unit 1123 is optical sensor PS, for example thin film transistor (TFT), optical diode or photoresistance.For example when this first photosensitive unit 1123 is thin film transistor (TFT) (shown in Fig. 4 a); This dummy gate line 1122 couples voltage source V; It has continuous fixed voltage; To keep the opening of this optical sensor PS, so 1123 of this first photosensitive units can continue the output first photocurrent I through the corresponding first read line R '
P1In addition; This first photosensitive unit 1123 also can comprise optical sensor PS and read transistor RS (shown in Fig. 4 b); This dummy gate line 1122 couples voltage source V; It has continuous fixed voltage, and to keep this opening that reads transistor RS, so this first photosensitive unit 1123 can pass through the corresponding first read line R ' output first photocurrent I
P1
Shown in Fig. 4 c, another is implemented in the aspect, this dummy gate line 1122 and this gate lines G
1～G
nTogether be coupled to this gate drivers 1121.This gate drivers 1121 can be set at activation simultaneously this dummy gate line 1122 and gate lines G
1Or activation simultaneously this dummy gate line 1122 and gate lines G
n(as the last item G of this dummy gate line 1122 adjacent to this gate line
nAnd be positioned at its when below) or activation dummy gate line 1122 and gate lines G respectively in regular turn
1～G
nTherefore, when this this dummy gate line 1122 of gate drivers 1121 activations, this first photosensitive unit 1123 is through the corresponding first read line R ' output first photocurrent I
P1Scrutablely be, first photosensitive unit 1123 of the present invention is not limited to the disclosed situation of Fig. 4 a to 4c, and it is merely exemplary but not in order to limit the present invention.
What need special were carried in addition is; Though in the embodiment of the invention; All do explanation with optical touch control panel; Second photosensitive unit 1123 in the contact panel ' constitute for example by optics sensing elements such as thin film transistor (TFT), optical diode or photoresistance; Have the detecting unit that detects the touch-control effect and form but second photosensitive unit 1123 ' can also be is any in other embodiments, that is to say second photosensitive unit 1123 ' can replace by detecting unit; Wherein, this detecting unit can be optical profile type sensing element (for example thin film transistor (TFT), optical diode or photoresistance etc.) or non-optical formula sensing element (for example traditional contact touch-control structure, piezoelectric element etc.).When second photosensitive unit 1123 ' when replacing with detecting unit; Other design architecture of contact panel then still remains unchanged; For example; Contact panel can include these a plurality of first photosensitive units 1123 equally and coupled this dummy gate line and couple this many rule first read line R ' respectively this moment, and is in order to transmit first detection signal to this sensing cell, backlight to adjust; This detecting unit then couples many second reading line taking R respectively, in order to transmit second detection signal to this sensing cell, in order to judge user's touch-control incident, as for other details, please consider other in light of actual conditions and implement to describe, and is not giving unnecessary details in this.
Shown in Fig. 3 b, it shows the synoptic diagram of the contact panel of another embodiment of the present invention, and the difference of itself and Fig. 3 a is, this array base palte 110 ' be divided at least two zones in the horizontal direction of Fig. 3 b, for example A district shown in Fig. 3 b and B district.Present embodiment is applicable at least when the light source of this backlight module 13 can be divided into two independent controls regional, and first photosensitive unit 1123 that is connected to this dummy gate line 1122 also is divided into the zone of similar number; For example shown in Fig. 3 b; When the backlight 14 of contact panel 1 can be distinguished into the backlight module zone 131 and 132 of two independent controls, three first read line R ' in the left side of pel array 112 (for example being positioned at three the first read line R ' in A district) be connected to signal read line 1124 and three first read line R ' in the right (for example being positioned at three the first read line R ' in A district) be connected to signal read line 1124 '; Wherein, be noted that in one embodiment that the area in A district and B district roughly equals the area of touching group zone 131 and 132 backlight respectively, but not as limit.By this; When this contact panel 1 operates in the uneven environment of surround lighting; When especially this contact panel 1 was large size panel, the light intensity that exposes to pel array 112 each zone (for example A district and B district) was also different, the first photocurrent I that this control module 30 can sense according to zones of different
P1Variation is to control the back light source brightness of zones of different respectively, to increase the display frame uniformity coefficient.In like manner, scrutable is that these first photosensitive units 1123 also can be divided into plural zone, for example N zone (N is greater than 2).At this moment, the first photocurrent I that exports of zones of different
P1By the N bar or be less than the N bar but be sent to this analog digital converting unit 20 greater than two unlike signal read line.Generally speaking, preferably, the quantity of signal read line can be designed as and equals the quantity that backlight can independent control area, but is not limited thereto.That is this inventive features; Backlight module can be extended to and N the zone that can independently control can be included; And this array base palte can correspondence be divided into N zone; And first photosensitive unit in the zones of different couples the various signals read line respectively, likewise, is coupled to sensing cell 111 by signal read line again after the also first parallel connection of the first read line R ' in each zone.
As previously mentioned, existing mode of saving the power consumption of backlight liquid crystal display module whole has operation inconvenience and cost of manufacture problem of higher.The present invention proposes a kind of contact panel (like Fig. 2 to 3b) in addition; It can use in optical profile type or the contact contact panel obsolete dummy gate line originally to come the extra photosensitive unit of setting up of further control one row with the variation of sense ambient light and then adjust the light intensity of backlight automatically; So need not utilize exceptional space and technology to make extra photosensitive unit, have lower cost of manufacture and preferable operation ease.
Though the present invention discloses with previous embodiment, so it is not that any those skilled in the art are not breaking away from the spirit and scope of the present invention, when doing various changes and modification in order to qualification the present invention.Therefore protection scope of the present invention is as the criterion when looking the accompanying Claim person of defining.
Claims (14)
1. contact panel comprises:
Gate drivers;
Array base palte also comprises:
Many gate lines and many data lines, in order to define pel array, the dummy gate line does not couple other gate line of said gate drivers and then couples said gate drivers in the said gate line;
Many first read lines;
Many second reading line takings;
A plurality of first photosensitive units couple said dummy gate line, and each first photosensitive unit is exported first detection signal through one first read line; And
A plurality of detecting units, wherein each detecting unit couples the second reading line taking, and through corresponding second reading line taking to export second detection signal; And
Sensing cell couples said first read line, said second reading line taking and backlight module, and adjusts said brightness of backlight module and judge the incident of touching according to said second detection signal according to said first detection signal.
2. contact panel according to claim 1, wherein said dummy gate line couple fixed voltage source and continue said first detection signal of output to keep said first photosensitive unit.
3. contact panel according to claim 1 is exported said first detection signal through at least one signal read line after wherein said first read line is connected in parallel to each other earlier again.
4. contact panel according to claim 3, wherein said backlight module comprise the zone that N can independently control, and said array base palte can correspondence divide into N zone, and the first interior photosensitive unit of zones of different couples the various signals read line respectively.
5. contact panel according to claim 1, the parallel said second reading line taking of wherein said first read line, the said gate line of said dummy gate line parallel.
6. contact panel according to claim 1, wherein said first photosensitive unit, said detecting unit and said dummy gate line are positioned at the picture-display-region of said contact panel.
7. contact panel according to claim 1, wherein said detecting unit comprise second photosensitive unit or contact touch-control structure.
8. optical touch control panel comprises:
Gate drivers;
Array base palte also comprises:
A plurality of pixels, with array configurations, at least a portion pixel also comprises pixel electrode and photosensitive unit; And
Many gate lines; Be arranged in parallel to define every row pixel; The pixel electrode and the photosensitive unit that wherein comprise each pixel of said photosensitive unit couple different gate lines; Article one or the last item gate line only couple the photosensitive unit of row pixel and do not couple pixel electrode in the said gate line, the photosensitive unit of the row pixel that couples with said article one or the last item gate line in order to ambient light to export first photocurrent; And
Sensing cell couples backlight module and said array base palte, adjusts said brightness of backlight module relatively according to the variation of said first photocurrent.
9. optical touch control panel according to claim 8; Wherein said article one or the last item gate line couple fixed voltage source and do not couple said gate drivers, the opening of the photosensitive unit that wherein said fixed voltage source maintenance and said article one or the last item gate line couple.
10. optical touch control panel according to claim 8, wherein said array base palte also comprise photosensitive unit that many first read lines couple the row pixel that couples with said article one or the last item gate line respectively to export said first photocurrent.
11. optical touch control panel according to claim 8 also comprises many second reading line takings and couples mutually to export second photocurrent with the photosensitive unit that said article one or the last item gate line gate line in addition couple.
12. optical touch control panel according to claim 11 is exported said first photocurrent through at least one signal read line after the first parallel connection of wherein said first read line again.
13. optical touch control panel according to claim 12, the parallel said second reading line taking of wherein said first read line, the parallel said gate line of said signal read line.
14. optical touch control panel according to claim 8, the photosensitive unit of wherein said pixel and said gate line are positioned at the picture-display-region of said contact panel.
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| CN2010102207287A CN102314247B (en) | 2010-06-29 | 2010-06-29 | Touch panel |
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| CN2010102207287A CN102314247B (en) | 2010-06-29 | 2010-06-29 | Touch panel |
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| CN102314247B CN102314247B (en) | 2013-12-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2015096213A1 (en) * | 2013-12-26 | 2015-07-02 | 深圳市华星光电技术有限公司 | Touch liquid crystal display (lcd) array substrate and corresponding touch lcd |
| TWI578203B (en) * | 2015-10-28 | 2017-04-11 | 友達光電股份有限公司 | In-cell touch display device and operating methods thereof |
| CN107621910A (en) * | 2017-11-07 | 2018-01-23 | 广东欧珀移动通信有限公司 | Keyboard pad and terminal |
| CN112038379A (en) * | 2019-11-27 | 2020-12-04 | 友达光电股份有限公司 | Pixel array substrate |
| CN112527142A (en) * | 2017-12-19 | 2021-03-19 | 友达光电股份有限公司 | Optical touch system |
| CN116386533A (en) * | 2023-03-30 | 2023-07-04 | 惠科股份有限公司 | Display panel, brightness control method thereof and display device |
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| CN107621910B (en) * | 2017-11-07 | 2024-01-23 | Oppo广东移动通信有限公司 | Keyboard pad and terminal |
| CN112527142A (en) * | 2017-12-19 | 2021-03-19 | 友达光电股份有限公司 | Optical touch system |
| CN112527142B (en) * | 2017-12-19 | 2023-04-11 | 友达光电股份有限公司 | Optical touch system |
| CN112038379A (en) * | 2019-11-27 | 2020-12-04 | 友达光电股份有限公司 | Pixel array substrate |
| CN112038379B (en) * | 2019-11-27 | 2023-06-30 | 友达光电股份有限公司 | Pixel array substrate |
| CN116386533A (en) * | 2023-03-30 | 2023-07-04 | 惠科股份有限公司 | Display panel, brightness control method thereof and display device |
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