CN102314247B - Touch panel - Google Patents
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- CN102314247B CN102314247B CN2010102207287A CN201010220728A CN102314247B CN 102314247 B CN102314247 B CN 102314247B CN 2010102207287 A CN2010102207287 A CN 2010102207287A CN 201010220728 A CN201010220728 A CN 201010220728A CN 102314247 B CN102314247 B CN 102314247B
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Abstract
The invention relates to a touch panel. The touch panel comprises a backlight module, an array substrate and a sensing unit, wherein the array substrate comprises a gate driver, a plurality of gate lines, a plurality of data lines, a plurality of first reading lines and a plurality of first photosensitive units; the gate lines and the data lines are used for defining a pixel array; virtual gate lines in the gate lines are not coupled with the gate driver, and the other gate lines are coupled with the gate driver; the first photosensitive units are coupled with the virtual gate lines, and each first photosensitive unit outputs first photocurrent through one first reading line; and the sensing unit is coupled with the first reading lines and the backlight module and adjusts the luminance of the backlight module according to the first photocurrent.
Description
Technical field
The present invention relates to a kind of touch control display apparatus, particularly a kind of energy accommodation low power consuming contact panel backlight.
Background technology
Liquid crystal display is now widely used display device, maturation along with the Touch Screen technology, make various electronic apparatus, for example multimedia player, mobile phone and personal digital assistant (PDA), almost all be equipped with the touch control type LCD screen to increase ease of use.
Liquid crystal display 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 liquid crystal display total consumption power.Therefore, the power save mode of most of liquid crystal display is how to reduce the power consumption of backlight module.
Traditional power save mode for example has provides the brightness adjustment knob of controlling backlight module brightness, and the user can adjust required brightness voluntarily according to behaviour in service by this; Yet, if liquid crystal display is equipped in portable electron device, the user may need the inconvenience of often adjusting the brightness of backlight module thereby causing using according to operating environment, therefore the brightness adjustment knob is not suitable for portable electron device.
Another kind of existing power save mode is that the pel array outside comprised in liquid crystal display additionally makes the intensity variation of at least one optical sensor (photo sensor) with the sensitive context light source, and adjusts the brightness of backlight module according to the intensity variation of surround lighting.For example Fig. 1 shows a kind of top view of infrabasal plate of available liquid crystal display 9, this liquid crystal display 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 extraly this pel array 93 outsides, in order to the intensity variation of sense ambient light output photoelectric stream according to this; Control module (not illustrating) can be adjusted according to the variation of this photocurrent the brightness of backlight module.Yet, additionally make the volume that this optical sensor 94 can improve cost of manufacture and increase liquid crystal display.
In view of this, be necessary to propose a kind of touch control display apparatus, it can adjust the luminosity of backlight module automatically according to the variation of surround lighting, does not need to increase device volume and can increase ease of use and reduce whole power consumption.
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 units of dummy gate line export as the foundation of adjusting 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 contact panel has 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, therefore do not need to take additional space and use extra process, can use the cost of manufacture that reduces contact panel and the volume that does not need to 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 read lines, a plurality of the 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 couples this gate drivers.This first photosensitive unit couples this dummy gate line, and each first photosensitive unit is exported the first detection signal by the first read line.Each detecting unit couples the second read line, and by the second corresponding read line to export the second detection signal.This sensing cell couples this first read line, the second read line and backlight module, and adjusts the brightness of this backlight module and touch event according to this second detection signal judgement according to this first detection signal.Wherein this dummy gate line couples fixed voltage source to keep this first photosensitive unit to continue this first detection signal of output.
A kind of optical touch control panel of the another proposition of the present invention, comprise 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 of each pixel that wherein comprises this photosensitive unit and photosensitive unit couple different gate lines, in this gate line, article one or the last item gate line only couple the photosensitive unit of row pixel and do not couple pixel electrode, the photosensitive unit of the row pixel coupled with this article one or the last item gate line in order to ambient light to export the first photocurrent.This sensing cell, couple backlight module and this array base palte, relatively adjusts the brightness of this backlight module according to the variation of this first photocurrent.Wherein this array base palte also comprises photosensitive unit that many first read lines couple respectively the row pixel coupled with this article one or the last item gate line to export this first photocurrent, and this optical touch control panel also comprises many second read lines and couples mutually to export the second photocurrent with the photosensitive unit that gate line beyond this article one or the last item gate line couples.
In optical touch control panel of the present invention, for keeping the characteristics such as circuit symmetry and load matched, a plurality of the first photosensitive units (photo sensor) that are coupled to dummy gate line (dummy gate line) are formed when making pel array, therefore must not utilize additional technique and space making.In addition, for making sensing cell, can receive obvious the first photocurrent variations, this first read line preferably is coupled to sensing cell via at least one signal read line after first parallel connection again; The number of signal read line can determine according to the number of the source region that can independently control in backlight module.
The accompanying drawing explanation
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 present invention;
Fig. 3 a shows the part schematic diagram of the contact panel of one embodiment of the invention;
Fig. 3 b shows the part schematic diagram of the contact panel of another embodiment of the present invention;
The partial circuit figure of the first photosensitive unit in the contact panel of Fig. 4 a～4c demonstration embodiment of the present invention.
Embodiment
In order to allow above and other objects of the present invention, feature and the advantage can be more obvious, hereinafter in connection with accompanying drawing, be described in detail below.In explanation of the present invention, identical member means with identical symbol, states in advance in this.
In addition, only shown partial component in each icon of the present invention and omitted the member not directly related with the present invention's explanation.
It must be emphasized that, though the present invention be take backlight and is illustrated as embodiment, but it is not in order to limit the present invention, and in instructions, backlight one word not means the back side that light source module one is positioned pel array, and for example the present invention also is applicable to other embodiment of front light-source.
Shown in Fig. 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 control 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 provides drawing frame data to give many data lines 1125, so this for prior art therefore do not repeating in this.
Want in addition special one carry be, though it is explanation that the embodiment of the present invention be take optics embedded touch control panel (it has optical element as shown in Figure 2-the second photosensitive unit 1123 '), yet those skilled in the art are when understanding, main inventive features of the present invention, also applicable to the contact panel of other form, for example contact embedded touch control panel (the i.e. non-optical formula element of the second photosensitive unit 1122 ' can be, traditional contact touch-control structure/element for example), moreover the present invention is also non-to be applied to embedded touch control panel, is limited, it is also applicable to external hanging touch panel etc.In addition, this gate drivers 1121 and/or source electrode driver (not shown) can integration and making on this array base palte 110 or be independent of outside this array base palte 110 and with it and be electrically connected to.In the present invention, this backlight module 13 can comprise any suitable light source, such as a plurality of light emitting diodes or at least one cold-cathode tube etc., but be not limited to this.
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 read line R, a plurality of the first photosensitive unit 1123 and a plurality of the second photosensitive units 1123 '; Wherein this first photosensitive unit 1123 and the second photosensitive unit 1123 ' such as comprising the optical sensors (photo sensor) such as thin film transistor (TFT) (TFT), optical diode (photo diode) or photoresistance (light sensitive resistor) in order to sensor light intensity and producing 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.In 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 ' couple.In addition, in this embodiment, a plurality of the first photosensitive units 1123, a plurality of the 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, 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 be positioned at as shown in Figure 2 the place, top of pel array 112; In 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, be positioned at place, the below (not shown) as Fig. 2 pel array 112.
This first photosensitive unit 1123 is arranged shape in column and couples this dummy gate line 1122, and each first photosensitive unit 1123 is exported the first photocurrent I by first a read line R '
p1, this first photocurrent I
p1conflux to signal read line 1124 with export the first photocurrent and; Should be noted that the first photocurrent I of the present invention's explanation
p1refer to photocurrent or detection signal that the 1123 sensitive context light time of this first photosensitive unit produce, this first photocurrent (detection signal) also confluxes to signal read line 1124 and transfers to sensing cell 111 by the first read line R ' and carry out interpretation a little less than environmental light intensity.Each second photosensitive unit 1123 ' couple gate line 1122 ' with the second read line R, its be subject to coupled gate line 1122 ' control and by corresponding the second read line R to export the second photocurrent I
p2; This first photocurrent I wherein
p1change this second photocurrent I corresponding to the external environment light intensity
p2the position coordinates with respect to this contact panel 1 in order to identification indicant (as finger or light pen etc., not illustrating).This first read line R ' and the second read line R can form when forming this pel array 112 simultaneously, thereby do not need to make by additional technique; Simultaneously, the plurality of the first photosensitive unit 1123, a plurality of the second photosensitive unit 1123 ' reach dummy gate line 1122 all to be arranged in pel array 112 originally, therefore also do not need to take additional space.
111 of sensing cells at least include analog digital converting unit (ADC) 20 and control module 30.Analog digital converting unit 20 comes from the first photocurrent I of many first read line R ' by this
p1the second photocurrent I with many second read line R
p2be converted to digital signal and carry out calculation process to provide to this control module 30.Then, this sensing cell 111 produces control signal and is sent to light source driving units 12 further to control the brightness of backlight module 13.At this, special one carry, the analog digital converting unit 20 in sensing cell 111 and control module 30 can be integrated into sensor chip (IC) or the mode that is respectively with two individual chips or circuit presents, but are not limited to 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 one embodiment aspect, this dummy gate line 1122 is connected to fixed voltage source V, and its magnitude of voltage is set as keeping the opening of this first photosensitive unit 1123, and this first photosensitive unit 1123 can continuously be exported this first photocurrent I by this
p1, but in the present invention, the voltage that dummy gate line 1122 couples is not limited to this.With respect to the first photosensitive unit 1123, the second photosensitive unit 1123 ' opening be controlled by gate drivers 1121, and because of gate drivers 1121 in order output scanning signal (scan signal) with drive (activation) each gate line 1122 ', therefore the second photosensitive unit 1123 ' can't continuously open as the first photosensitive unit 1123.
Other is implemented in aspect, the sweep signal that this first photosensitive unit 1123 also can be exported with this gate drivers 1121 of other gate line 1122 ' jointly be subject to is controlled, 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 (now 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 (now 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).
In existing optical touch control panel, for the structural symmetry that makes pel array and load is mated, article one of gate line or the last item can be made as to the dummy gate line, in existing structure, this dummy gate line is not used when contact panel operates, that is it will not have any driving function or other further substantial function.The present invention is the framework that utilizes this dummy gate line, further control photosensitive unit to detect the surround lighting of contact panel, and then dynamically adjust accordingly back light source brightness, for example, when the surround lighting grow, back light source brightness is downgraded or when surround lighting turns 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 the second read line R again, and this dummy gate line 1122 is coupled to the opening (detected state) of fixed voltage source V with a plurality of the 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, the sweep signal of exporting by gate drivers 1121 is controlled the first photosensitive unit 1123.
By analog digital converting unit (ADC) 20, this comes from respectively the first photocurrent I of the first read line R '
p1and the second photocurrent I of the second read line 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.For example, in a kind of enforcement aspect, these control module 30 outputs, but be not limited to, pulse-length modulation (PWM) control signal to this light source driving units 12 to control the brightness of backlight module 13, for example, input to the current value of backlight module 13 or magnitude of voltage to control the luminosity of its light source by change.Control module 30 also can be according to this second photocurrent I
p2the event of touching of judgement indicant (not illustrating, as 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 be processed respectively by different control units or processing unit.
Shown in Fig. 3 a, it shows the part schematic diagram of the contact panel of one embodiment of the invention, its array base palte that is this contact panel 1 110.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 the first photosensitive unit 1123, many data line D
1～D
m, many second read line R
1～R
6, a plurality of the second photosensitive units 1123 ' and gate drivers 1121; Wherein the number of this circuit and element is only exemplary, 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 the first photosensitive unit 1123 or the second photosensitive unit 1123 ', the pixel electrode of each pixel that wherein comprises photosensitive unit and photosensitive unit couple respectively different gate lines, so in this gate line, 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, 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 the first photosensitive unit 1123 is coupled to this sensing cell 111 by first a read line R ', and carries out the analog/digital conversion processing; This first read line R ' preferably is coupled to this sensing cell 111 by signal read line 1124 after first parallel connection again, so that the first photocurrent I that each first read line R ' exports
p1reach again this sensing cell 111 after addition and use and obtain larger photocurrent, in order to interpretation.In this embodiment, the quantity of the first read line R ' equals the quantity of the second read line R, but is not limited to this, and the quantity of the first read line R ' will depend on the quantity that the first sensing cell 1123 arranges basically.In the 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
nfor the last item sweep trace, that is when this gate drivers 1121 sequentially the output scanning signal to this gate lines G
1～G
nthe time, from gate lines G
1start and the gate lines G that arrives
nto complete the single pass program.This second read line R
1～R
6finally be coupled to this sensing cell 111.Each second photosensitive unit 1123 ' be coupled to gate lines G and the second read line R; When this gate drivers 1121 activations (enable) row gate lines G, be coupled to the second photosensitive unit 1123 of corresponding gate line ' by the second corresponding read line R, export this second photocurrent I
p2.Scrutable, this first read line R ' preferably with this second read line R
1～R
6or the existing D of data
1～D
mparallel to each other, this signal read line 1124 is preferably parallel with this gate line, with problems such as the static discharge (ESD) 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) (as 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 output the first photocurrent I by the first corresponding read line R '
p1.In addition, this first photosensitive unit 1123 also can comprise optical sensor PS and read transistor RS (as shown in Figure 4 b), this dummy gate line 1122 couples voltage source V, it has continuous fixed voltage, to keep this opening that reads transistor RS, so this first photosensitive unit 1123 can be exported the first photocurrent I by the first corresponding read line R '
p1.
Shown in Fig. 4 c, another is implemented in 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 as 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 sequentially activation dummy gate line 1122 and gate lines G respectively
1～G
n.Therefore, when this this dummy gate line 1122 of gate drivers 1121 activations, this first photosensitive unit 1123 is exported the first photocurrent I by the first corresponding read line R '
p1.Scrutable, the first photosensitive unit 1123 of the present invention is not limited to the disclosed situation of Fig. 4 a to 4c, and it is only for exemplary but not in order to limit the present invention.
Need in addition special one carry be, although in the embodiment of the present invention, all with optical touch control panel, explain, the second photosensitive unit 1123 in contact panel ' by thin film transistor (TFT) for example, the optics such as optical diode or photoresistance sensing element forms, there is the detecting unit that detects the touch-control effect and form but the second photosensitive unit 1123 ' can also be is any in other embodiments, that is to say, the second photosensitive unit 1123 ' can be replaced by detecting unit, wherein, this detecting unit can be optical profile type sensing element (thin film transistor (TFT) for example, optical diode or photoresistance etc.) or non-optical formula sensing element (traditional contact touch-control structure for example, piezoelectric element etc.).When the second photosensitive unit 1123 ' while replacing with detecting unit, other design architecture of contact panel still remains unchanged, for example, now contact panel can include equally the plurality of the first photosensitive unit 1123 and couples this dummy gate line and couple respectively this many rule the first read line R ', in order to transmit the first detection signal to this sensing cell, backlight to adjust; This detecting unit couples respectively many second read line R, in order to transmit the second detection signal to this sensing cell, in order to judge user's touch-control event, as for other details, please consider other in light of actual conditions and implement to describe, and in this, is not repeating.
Shown in Fig. 3 b, it shows the schematic 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 ' in the horizontal direction of Fig. 3 b, be divided at least two zones, for example the A district shown in Fig. 3 b and B district.The present embodiment is applicable to when the light source of this backlight module 13 can be divided at least two independent control regional, and the 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 two independent backlight modules zones of controlling 131 and 132, three, the left side of pel array 112 the first read line R ' (for example being positioned at three first read line R ' in A district) be connected to signal read line 1124 and three, the right the first read line R ' (for example being positioned at three first read line R ' in A district) be connected to signal read line 1124 '; Wherein, be noted that in one embodiment, the area in A district and B district roughly equals respectively the area of touching group zone 131 and 132 backlight, but not as limit.By this, when this contact panel 1 operates in the inhomogeneous environment of surround lighting, when especially this contact panel 1 is large size panel, the light intensity that exposes to pel array 112 each zones (for example A district and B district) is also different, the first photocurrent I that this control module 30 can sense according to zones of different
p1variation is to control respectively the back light source brightness of zones of different, to increase the display frame uniformity coefficient.In like manner, scrutable, these first photosensitive units 1123 also can be divided into plural zone, for example N zone (N is greater than 2).Now, the first photocurrent I that zones of different is exported
p1by the N bar or be less than the N bar but be greater than the unlike signal read line of two and be sent to this analog digital converting unit 20.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 to this.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 the first photosensitive unit in zones of different couples respectively different signal read lines, similarly, the first read line R ' in each zone also is coupled to sensing cell 111 by signal read line after first parallel connection again.
As previously mentioned, existing mode of saving the whole power consumption of backlight module of liquid crystal display has operation inconvenience and the higher problem of cost of manufacture.The another a kind of contact panel (as Fig. 2 to 3b) that proposes of the present invention, its can with in optical profile type or contact contact panel originally obsolete dummy gate line further control photosensitive unit that row additionally set up with the variation of sense ambient light and then automatically adjust the light intensity of backlight, therefore do not need to utilize exceptional space and technique to make extra photosensitive unit, there is lower cost of manufacture and reach preferably operation ease.
Although the present invention discloses with previous embodiment, so it is not in order to limit the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention, when doing various changes and modification.Therefore protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (11)
1. a contact panel comprises:
Gate drivers;
Array base palte also comprises:
Many gate lines and many data lines, in order to define pel array, in described gate line, the dummy gate line does not couple other gate line of described gate drivers and couples described gate drivers;
Many the first read lines;
Many the second read lines;
A plurality of the first photosensitive units, couple described dummy gate line, and each first photosensitive unit is exported the first detection signal by first read line; And
A plurality of detecting units, wherein each detecting unit couples the second read line, and by the second corresponding read line to export the second detection signal; And
Sensing cell, couple described the first read line, described the second read line and backlight module, and adjust the brightness of described backlight module and touch event according to described the second detection signal judgement according to described the first detection signal,
Wherein said dummy gate line couples fixed voltage source to keep described the first photosensitive unit to continue described the first detection signal of output.
2. contact panel according to claim 1, export described the first detection signal by least one signal read line after wherein said the first read line first is connected in parallel to each other again.
3. contact panel according to claim 2, wherein said backlight module comprises N the zone that can independently control, and described array base palte can correspondence divide into N zone, and the first interior photosensitive unit of zones of different couples respectively different signal read lines.
4. contact panel according to claim 1, parallel described the second read line of wherein said the first read line, the described gate line of described dummy gate line parallel.
5. contact panel according to claim 1, wherein said the first photosensitive unit, described detecting unit and described dummy gate line are positioned at the picture-display-region of described contact panel.
6. contact panel according to claim 1, wherein said detecting unit comprises the second photosensitive unit or contact touch-control structure.
7. an 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 of each pixel that wherein comprises described photosensitive unit and photosensitive unit couple different gate lines, in described gate line, article one or the last item gate line only couple the photosensitive unit of row pixel and do not couple pixel electrode, the photosensitive unit of the row pixel coupled with described article one or the last item gate line in order to ambient light to export the first photocurrent; And
Sensing cell, couple backlight module and described array base palte, according to the variation of described the first photocurrent, relatively adjusts the brightness of described backlight module,
Wherein said array base palte also comprises photosensitive unit that many first read lines couple respectively the row pixel coupled with described article one or the last item gate line to export described the first photocurrent,
Also comprise many second read lines and couple mutually to export the second photocurrent with the photosensitive unit that described article one or the last item gate line gate line in addition couple.
8. optical touch control panel according to claim 7, wherein said article one or the last item gate line couple fixed voltage source and do not couple described gate drivers, the opening of the photosensitive unit that wherein said fixed voltage source maintenance and described article one or the last item gate line couple.
9. optical touch control panel according to claim 7, export described the first photocurrent by least one signal read line after the first parallel connection of wherein said the first read line again.
10. optical touch control panel according to claim 9, parallel described the second read line of wherein said the first read line, the described gate line of described signal-obtaining line parallel.
11. optical touch control panel according to claim 7, the photosensitive unit of wherein said pixel and described gate line are positioned at the picture-display-region of described 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 true CN102314247B (en) | 2013-12-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103728762A (en) * | 2013-12-26 | 2014-04-16 | 深圳市华星光电技术有限公司 | Touch liquid crystal display and array substrate thereof |
| 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 |
| CN107621910B (en) * | 2017-11-07 | 2024-01-23 | Oppo广东移动通信有限公司 | Keyboard pad and terminal |
| TWI658393B (en) * | 2017-12-19 | 2019-05-01 | 友達光電股份有限公司 | Optical touch system |
| US11086452B2 (en) * | 2019-11-27 | 2021-08-10 | Au Optronics Corporation | 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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| CN101093293A (en) * | 2006-06-20 | 2007-12-26 | 瀚宇彩晶股份有限公司 | Touch control faceplate, and fabricating method |
| CN101625488A (en) * | 2008-07-09 | 2010-01-13 | 瀚宇彩晶股份有限公司 | Display device and method for driving display panel thereof |
| CN101699333A (en) * | 2009-06-30 | 2010-04-28 | 深超光电（深圳）有限公司 | Touch display panel |
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| KR100983524B1 (en) * | 2003-12-01 | 2010-09-24 | 삼성전자주식회사 | Light sensing panel, apparatus for sensing a light having the same, and driving method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101093293A (en) * | 2006-06-20 | 2007-12-26 | 瀚宇彩晶股份有限公司 | Touch control faceplate, and fabricating method |
| CN101625488A (en) * | 2008-07-09 | 2010-01-13 | 瀚宇彩晶股份有限公司 | Display device and method for driving display panel thereof |
| CN101699333A (en) * | 2009-06-30 | 2010-04-28 | 深超光电（深圳）有限公司 | Touch display panel |
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