CN102662527A - Touch-sensing display device - Google Patents
Touch-sensing display device Download PDFInfo
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- CN102662527A CN102662527A CN2011104360318A CN201110436031A CN102662527A CN 102662527 A CN102662527 A CN 102662527A CN 2011104360318 A CN2011104360318 A CN 2011104360318A CN 201110436031 A CN201110436031 A CN 201110436031A CN 102662527 A CN102662527 A CN 102662527A
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Abstract
A touch-sensing display device including a touch-sensing panel and a touch-sensing light source therearound is provided. The touch-sensing panel has a display surface and includes a pixel array including pixel structures and a display medium disposed on the pixel array. One pixel structure includes a scan line, a data line intersected with the scan line, an active element electrically connected to the scan line and the data line, a pixel electrode electrically connected to the active element, a capacitor electrode line electrically coupled with the pixel electrode, a readout line parallel to the data line, and a sensing element electrically connected to the scan line and the readout line and having a sensing surface facing the display surface. The touch-sensing light source provides a touch-sensing light to form a uniformed light field at the display surface. And at least one filter layer is provided above the sensing element.
Description
Technical field
The invention relates to a kind of touch-control sensing display device, particularly about a kind of touch-control sensing display device with optical sensor.
Background technology
Along with information and wireless communication technique make rapid progress and widely information use, the input element of many information products changes over contact panel from traditional keyboard and mouse and has more personalized operating experience to reach.At present; Contact panel generally be divided into electric resistance touch-control panel, capacitance type touch-control panel, surface acoustic wave touch panel (surface acoustic wave, SAW), electromagnetic touch-control panel (electromagnetic touch panels) and optical touch panel etc.
With the optical touch panel is example, and optical touch panel is operable in reflection sensing modes or shade sensing modes.In the reflection sensing modes, when the user touches touching face with its finger, the lip-deep light of optical touch panel can be scattered and reflect.So, be positioned at OPTICAL SENSORS under the touch points and can receive the light that is reflected and is scattered to produce a sensing signal.This optical touch panel according to the sensing signal decidable on optical touch panel by touch location.Yet except touch location reflects the light with scattering, OPTICAL SENSORS also possibly receive surround lighting.Therefore, when surround lighting was too strong, this kind optical touch panel possibly produce operating mistake or false sense is surveyed.
In addition, in the shade sensing modes, when the user touches touching face with its finger, but be incident to the light crested on the OPTICAL SENSORS.So the OPTICAL SENSORS that is positioned under touching a little senses shade to produce a sensing signal.This optical touch panel can according to sensing signal judge on optical touch panel by touch location.Yet when surround lighting was too weak, because under the situation of dark, touch control sensor can't correctly be judged shade, and this kind optical touch panel possibly produce operating mistake.
Summary of the invention
In view of the above, the present invention provides a kind of touch-control sensing display device, and it has good touch-control sensing sensitivity (sensitivity).
In one embodiment of this invention, the present invention provides a kind of touch-control sensing display device to comprise a touch-control sensing panel and a touch-control sensing light source.The touch-control sensing panel has a display surface and comprises a pel array and be disposed at the display medium on this pel array, and wherein above-mentioned pel array comprises a plurality of dot structures.One of them dot structure comprises one scan line, a data line, an active component, a pixel electrode, a capacitance electrode line, a read line and a sensor.Sweep trace and data line are interlaced with each other.Active component electrically connects sweep trace and data line.Pixel electrode electrically connects active element.Capacitance electrode line electrical couplings pixel electrode.Read line and data line configured in parallel.Sensor electrically connects sweep trace and read line, wherein sensor be connected to periphery a sensing face of capacitance electrode line and sensor towards display surface.The touch-control sensing light source is configured in around the touch-control sensing panel and provides a touch-control sensing light to form a uniform light field at display surface.
In one embodiment of this invention, aforementioned touch-control sensing display device also comprises a back light unit, and this back light unit is configured in the back side with respect to display surface of touch-control sensing panel.In one embodiment, the touch-control sensing light source is configured in the back light unit to send touch-control sensing light towards display surface.
In one embodiment of this invention, show that light wavelength is different from aforementioned touch-control sensing light wavelength.
In one embodiment of this invention, an aforementioned touch-control sensing invisible light only.
In one embodiment of this invention, before aforementioned touch-control sensing light source is configured in display surface, and send touch-control sensing light to form a uniform light field at display surface towards display surface.In one embodiment, the touch-control sensing light source comprises that at least two light emitting diodes are positioned at the touch-control sensing panel periphery.In another embodiment, the touch-control sensing light source can comprise a LASER Light Source and lens, and before these lens are positioned at LASER Light Source, and the touch-control sensing light source can provide the touch-control sensing light of a tentiform, and the touch-control sensing light of this tentiform is parallel to display surface in fact.
In one embodiment of this invention; Aforementioned touch-control sensing light source comprises a light emitting source and a LGP; Light emitting source is positioned at the LGP side and sends touch-control sensing light, and touch-control sensing light is transmitted in the LGP to form uniform light field through total reflection (the total inner reflection) effect of LGP in fact.
In one embodiment of this invention; Aforementioned touch-control sensing light source comprises a light emitting source and a light diffusing sheet; Light emitting source is positioned at the light diffusing sheet side and sends touch-control sensing light towards light diffusing sheet, and touch-control sensing light scatters out to form uniform light field from light diffusing sheet in fact.In one embodiment, light diffusing sheet has a plurality of diffusion particles and is distributed in wherein.
In one embodiment of this invention, aforementioned touch-control sensing light source is disposed at the display medium side and sends touch-control sensing light to form uniform light field towards display medium.
In one embodiment of this invention, aforementioned touch-control sensing panel comprises that also a filter layer and display medium are configured between filter layer and the pel array.Particularly; Filter layer can comprise a Red lightscreening plate, a green color filter and the blue color filter of alternate configurations on pixel electrode, wherein Red lightscreening plate, green color filter and blue color filter at least one can further be positioned on the sensor of each dot structure.In addition, filter layer can comprise an optical filter that is suitable for blocking visible light.
Based on above-mentioned, said touch-control sensing display device configurations has a touch-control sensing light source to form a uniform light field at display surface.Therefore, no matter said touch-control sensing display device is to use under dark or bright environment, be integrated in the touch-control sensing panel sensor correctly the sensing user touch and produce corresponding sensing signal.That is to say that said touch-control sensing display device has good touch-control sensing sensitivity.
For letting the above-mentioned feature and advantage of the present invention can be more obviously understandable, hereinafter is special lifts embodiment, and cooperates appended graphic elaborating as follows.
Description of drawings
Figure 1A is the synoptic diagram of the touch-control sensing display device of the first embodiment of the present invention.
Figure 1B is the schematic equivalent circuit that is illustrated in the pel array of touch-control sensing display device in Figure 1A.
Fig. 2 is the synoptic diagram of the touch-control sensing display device of the second embodiment of the present invention.
Fig. 3 is the synoptic diagram of the touch-control sensing display device of the third embodiment of the present invention.
Fig. 4 is the synoptic diagram of the touch-control sensing display device of the fourth embodiment of the present invention.
Fig. 5 is the synoptic diagram of the touch-control sensing display device of the fifth embodiment of the present invention.
Fig. 6 is the synoptic diagram of the touch-control sensing display device of the sixth embodiment of the present invention.
Fig. 7 shows the absorptivity by the Photosensing Units that thin film transistor (TFT) constituted with amorphous silicon passage.
Fig. 8 is the synoptic diagram of the touch-control sensing panel of the seventh embodiment of the present invention.
The light transmittance of Fig. 9 A exhibit red optical filter.
When Fig. 9 B exhibit red optical filter is disposed on the Photosensing Units, the absorptivity of Photosensing Units.
Figure 10 is the synoptic diagram of the touch-control sensing panel of the eighth embodiment of the present invention.
The laminated light transmittance of Figure 11 A exhibit red optical filter and blue color filter.
When Figure 11 B exhibit red optical filter and blue color filter laminated is disposed on the Photosensing Units, the absorptivity of Photosensing Units.
The laminated light transmittance of Figure 12 A exhibit red optical filter and green color filter.
When Figure 12 B exhibit red optical filter and green color filter laminated is disposed on the Photosensing Units, the absorptivity of Photosensing Units.
Figure 13 is the synoptic diagram of the touch-control sensing panel of the nineth embodiment of the present invention.
The laminated light transmittance of Figure 14 A exhibit red optical filter, green color filter and blue color filter.
When Figure 14 B exhibit red optical filter, green color filter and blue color filter laminated is disposed on the Photosensing Units, the absorptivity of Photosensing Units.
[main element label declaration]
10,20,30,40,50,60: the touch-control sensing display device
100,102,104,106,108: the touch-control sensing panel
100A, 102C: pel array 100B, 102D: display medium
100C, 100D, 102A, 102B: substrate 102E: counter electrode
102F, 106F, 108F: chromatic filter layer
104F, 106F
1, 106F
2, 108F
1, 108F
2, 108F
3: colored filter
200,210,220,230,240,250: the touch-control sensing light source
222: LASER Light Source 224: lens
232,242: light emitting source 234: LGP
244: light diffusing sheet 246: diffusion particle
300: back light unit S1: display surface
S2: back side L1: touch-control sensing light
L2: touch-control sensing light L3 with scattering is reflected: display light
LF: light field T1: active component
T2: on-off element T3: Photosensing Units
SR: sensor PE: pixel electrode
Pn: dot structure F: finger
W: penetration window
SL
1..., SL
N-1, SL
n, SL
N+1...: sweep trace
DL
1..., DL
N-1, DL
n, DL
N+1...: data line
CL
1..., CL
N-1, CL
n, CL
N+1...: capacitance electrode line
RL
1..., RL
N-1, RL
n, RL
N+1...: read line
Embodiment
Embodiments of the invention will be done more detailed description with accompanying drawing in following.Under possible situation, employed identical reference number and its description refer to same or analogous part in the accompanying drawing.
Figure 1A is the synoptic diagram of the touch-control sensing display device of the first embodiment of the present invention, and Figure 1B is the schematic equivalent circuit that is illustrated in the pel array of touch-control sensing display device in Figure 1A.Please with reference to Figure 1A and Figure 1B, touch-control sensing display device 10 comprises a touch-control sensing panel 100 and a touch-control sensing light source 200 at least.Touch-control sensing panel 100 has a display surface S1 and comprises a pel array 100A and be disposed at the display medium 100B on the pel array 100A.Touch-control sensing light source 200 is configured in around the touch-control sensing panel 100 and provides a touch-control sensing light L1 to form a uniform light field at display surface S1.Particularly, display medium 100B can be sandwiched between two substrates 100C and the 100D, and pel array 100A is disposed at substrate 100C upward to drive display medium 100B.
In the present embodiment, pel array 100A comprises that a plurality of dot structure Pn and one of them dot structure Pn comprise one scan line SLn, a data line DLn, an active component T1, a pixel electrode PE, a capacitance electrode line CLn, a read line RLn and a sensor SR.Sweep trace SLn and data line DLn are interlaced with each other.Active component T1 electrically connects sweep trace SLn and data line DLn.Pixel electrode PE electrically connects active elements T 1.Capacitance electrode line CLn electrical couplings pixel electrode PE is to produce storage capacitors.Read line RLn and data line DLn configured in parallel.Sensor SR electrically connects sweep trace SLn and read line RLn, wherein sensor SR be connected to capacitance electrode line CLn and sensor SR a sensing face (not illustrating) in fact towards display surface S1.
More specifically, pel array 100A comprises multi-strip scanning line (SL
1..., SL
N-1, SL
n, SL
N+1...), many data line (DL
1..., DL
N-1, DL
n, DL
N+1...), many read line (RL
1..., RL
N-1, RL
n, RL
N+1...) and many capacitance electrode line (CL
1..., CL
N-1, CL
n, CL
N+1...).In this embodiment, each dot structure Pn has an active component T1, a pixel electrode PE and a sensor SR.Yet not limit of the present invention is in this embodiment and do not limit the quantity of active component T1, pixel electrode PE and sensor SR.(do not illustrate) in another embodiment, each dot structure Pn can have active component T1 and pixel electrode PE, and sensor SR only is disposed among the partial pixel structure Pn.That is to say, be not that each dot structure Pn has sensor SR, is can be less than the quantity of dot structure Pn with the quantity of sensor SR.
In addition, sensor SR can be an optical sensor, and sensor SR comprises an on-off element T2 and a Photosensing Units T3.On-off element T2 electrically connects sweep trace SL
N+1And read line RL
n, and Photosensing Units T3 electrically connects on-off element T2 and connect a contiguous capacitance electrode line CL
nThe on-off element T2 of sensor SR connects contiguous sweep trace SL in dot structure Pn
N+1, rather than connect among the dot structure Pn sweep trace SL with pixel electrode PE electrical couplings
nTherefore, when the active component T1 of dot structure Pn is unlocked, the sensor SR in dot structure Pn is not affected, because the on-off element T2 of sensor SR is not attached to described and sweep trace SL pixel electrode PE electrical couplings
n
Shown in Figure 1A and Figure 1B, when the user passes through an object, for example be not to use person's finger F, touch the display surface S1 of touch-control sensing panel 100, touch-control sensing light L1 is by finger F scattering and reflection.The Photosensing Units T3 of sensor SR under the finger F touch location can produce photocurrent because of the touch-control sensing light L2 that is reflected with scattering.In case on-off element T2 is unlocked, the photocurrent that results among the OPTICAL SENSORS T3 can be immediately from OPTICAL SENSORS T3 transmission and read line RL
nCan be directly and read the photocurrent of output immediately.In view of the above, sensor SR does not have any member in order to store charge, is electric capacity for example, and simple sensing design can be provided.In addition, by same scan line SL
N+1The sensor SR that is controlled is connected in different read line RL separately
n, RL
N+1... therefore by same scan line SL
N+1The sensing signal that the sensor SR that is controlled is produced is read individually, can avoid by same scan line SL
N+1Signal between the sensor SR that is controlled disturbs, and uses the sensitivity of further lifting sensor SR.
In embodiments of the present invention, display medium 100B can be the liquid crystal of non-self-luminescent material.Therefore, touch-control sensing display device 10 can comprise also that a back light unit 300 is disposed at a back side S2 of touch-control sensing panel 100, and this back side S2 is with respect to display surface S1, and back light unit 300 is fit to send the display light L3 through display surface S1.In addition, in one embodiment of this invention, the quantity of touch-control sensing light source 200 can be a plurality of and touch-control sensing light source 200 is integrated among the back light unit 300.For instance, touch-control sensing light source 200 can be disposed in the back light unit 300 a plurality of light emitting diodes and when back light unit 300 during for direct-type backlight unit these light emitting diodes but the invention is not restricted to this with arrayed.In other embodiments, when back light unit 300 was the illuminated back light unit of side, touch-control sensing light source 200 can be a side that is arranged in a vertical bar and is positioned at back light unit 300.Certainly, touch-control sensing light source 200 can be arranged between the light source of back light unit 300.
Be noted that between touch-control sensing function time suitable to moulding, touch-control sensing light source 200 can stably provide touch-control sensing light L1, therefore no matter environmental light intensity or a little less than, sensor SR can normally operate.In addition, in order to reach good sensitivity, the wavelength of touch-control sensing light L1 can be different from the wavelength of display light L 3 and the Photosensing Units T3 in sensor SR can be designed to that touch-control sensing light L1 is had sensitivity preferably.In addition, touch-control sensing light L1 can be an invisible light, for example is infrared light.Yet in category of the present invention, the wavelength of touch-control sensing light L1 is not limited to by this should.
Fig. 2 is the synoptic diagram of the touch-control sensing display device of the second embodiment of the present invention.Please with reference to Fig. 2, the composition member of touch-control sensing display device 20 is similar with the composition member of the touch-control sensing display device 10 of first embodiment in fact.The difference of touch-control sensing display device 10 and touch-control sensing display device 20 mainly be the touch-control sensing configured light sources and other of touch-control sensing display device 20 form member can be with reference to the explanation in first embodiment.Particularly, in the present embodiment, the touch-control sensing light source 210 of touch-control sensing display device 20 is disposed at the front of the display surface S1 of touch-control sensing panel 100.Touch-control sensing light source 210 can be two or a plurality of light emitting diode that is positioned at touch-control sensing panel 100 periphery.
In the present embodiment, touch-control sensing light source 210 is positioned at before the display surface S1 and towards display surface S1 and sends touch-control sensing light L1 to form uniform light field LF at display surface S1.When user's finger F touches touch-control sensing display device 20, but touch-control sensing light L1 is in the touch location crested and uniform light field LF is disturbed.In this, be integrated in sensor in the touch-control sensing panel 100 (be not illustrated in Fig. 2, but can with reference to Figure 1B) and can sense at a shade of touch location and produce corresponding touching signals.That is to say that touch-control sensing display device 20 can have shade sensing modes touch-control sensing function.
Fig. 3 is the synoptic diagram of the touch-control sensing display device of the third embodiment of the present invention.Please with reference to Fig. 3, touch-control sensing display device 30 is similar with the touch-control sensing display device 20 of second embodiment in fact.The difference of touch-control sensing display device 30 and touch-control sensing display device 20 mainly is the kind of touch-control sensing light source, and other composition member of touch-control sensing display device 30 can be with reference to the explanation in first and second embodiment.Particularly, in the present embodiment, the touch-control sensing light source 220 of touch-control sensing display device 30 is disposed at before the display surface S1 of touch-control sensing panel 100 and to be positioned at touch-control sensing panel 100 other.In this, touch-control sensing light source 220 comprises a LASER Light Source 222 and the lens 224 before LASER Light Source 222.In addition, touch-control sensing light source 220 can comprise at least one light emitting diode (LED).Touch-control sensing light source 220 can provide the touch-control sensing light L1 of a tentiform, and the touch-control sensing light L1 of this tentiform is parallel to display surface S1 in fact.
In the present embodiment, when user's finger F touches touch-control sensing display device 30, can be scattered and reflect at the touch-control sensing light L1 of touch location.In this, be integrated in sensor in the touch-control sensing panel 100 (be not illustrated in Fig. 3, but can with reference to Figure 1B) and can sense in touch location and be reflected with the touch-control sensing light L2 of scattering and produce corresponding touching signals.That is to say that touch-control sensing display device 30 can have reflection sensing modes touch-control sensing function.
Fig. 4 is the synoptic diagram of the touch-control sensing display device of the fourth embodiment of the present invention.Please with reference to Fig. 4, touch-control sensing display device 40 is similar with the touch-control sensing display device 20 of second embodiment in fact.The difference of touch-control sensing display device 40 and touch-control sensing display device 20 mainly be the touch-control sensing configured light sources and other of touch-control sensing display device 40 form member can be with reference to the explanation in first and second embodiment.Particularly, in the present embodiment, the touch-control sensing light source 230 of touch-control sensing display device 40 comprises a light emitting source 232 and a LGP 234, and this LGP 234 is positioned on the touch-control sensing panel 100.It is other and send touch-control sensing light L1 that light emitting source 232 is positioned at LGP 234, and touch-control sensing light L1 in fact the total reflection effect through LGP 234 be transmitted in the LGP 234 and form uniform light field with display surface S1 at touch-control sensing panel 100.That is to say that LGP 234 has specific refractive index so that touch-control sensing light L1 can receive total reflection effect in LGP 234.
In the present embodiment, when user's finger F touches touch-control sensing display device 40, touch-control sensing light L1 can be disturbed in the TIR of LGP 234 effect, and touch-control sensing light L1 therefore can be from LGP 234 by outwards scattering and emission in touch location.In addition, the touch-control sensing light L1 that outwards penetrates can be by finger F scattering and reflection.In this, be integrated in sensor in the touch-control sensing panel 100 (be not illustrated in Fig. 4, but can with reference to Figure 1B) and can sense the touch-control sensing light L2 that is reflected with scattering, and produce corresponding touching signals in touch location.That is to say that touch-control sensing display device 40 can have reflection sensing modes touch-control sensing function.
Fig. 5 is the synoptic diagram of the touch-control sensing display device of the fifth embodiment of the present invention.Please with reference to Fig. 5, touch-control sensing display device 50 is similar with the touch-control sensing display device 40 of the 4th embodiment in fact.The difference of touch-control sensing display device 50 and touch-control sensing display device 40 mainly be the touch-control sensing configured light sources and other of touch-control sensing display device 50 form member can be with reference to the explanation in first, second and the 4th embodiment.Particularly, in the present embodiment, the touch-control sensing light source 240 of touch-control sensing display device 50 comprises a light emitting source 242 and a light diffusing sheet 244.Light diffusing sheet 244 is positioned at the display surface S1 top of touch-control sensing panel 100.It is other and send touch-control sensing light L1 towards light diffusing sheet 244 that light emitting source 242 is positioned at light diffusing sheet 244, and touch-control sensing light L1 scatters out with the display surface S1 at touch-control sensing panel 100 from light diffusing sheet 244 in fact and forms uniform light field.In one embodiment, light diffusing sheet 244 can have a plurality of diffusion particles 246 and be distributed in wherein, but the present invention is not as limit.
In the present embodiment, when user's finger F touches touch-control sensing display device 50, the touch-control sensing light L1 that radiates away from touch-control sensing panel 100 can be scattered and reflect.Therefore, the intensity that is integrated in the touch-control sensing light L1 of sensor in the touch-control sensing panel 100 (be not illustrated in Fig. 5, but can with reference to Figure 1B) towards touch-control sensing panel 100 radiation and irradiation can be raised.In view of the above, sensor is according to the lifting intensity of the touch-control sensing light L1 that receives, and it is movable to carry out touch-control sensing to produce corresponding touching signals.That is to say that touch-control sensing display device 50 can have reflection sensing modes touch-control sensing function.
Fig. 6 is the synoptic diagram of the touch-control sensing display device of the sixth embodiment of the present invention.Please with reference to Fig. 6, touch-control sensing display device 60 comprises touch-control sensing panel 102 and touch-control sensing light source 250.Touch-control sensing panel 102 comprises two substrates 102A and 102B, a pel array 102C, a display medium 102D, a subtend electrode 102E and a chromatic filter layer 102F.Display medium 102D is configured between substrate 102A and the 102B, and can for, but do not limit a liquid crystal layer.Pel array 102C is configured in substrate 102B and goes up to drive display medium 102D.Counter electrode 102E is configured on the substrate 102A and with respect to pel array 102C, and chromatic filter layer 102F is between counter electrode 102E and substrate 102A.In this; The pel array 102C composition member that the composition member of pel array 100A and pel array 102C can reference pixels array 100A in first embodiment in fact, and Fig. 6 only schematically expresses on-off element T2 and the Photosensing Units T3 of sensor SR.
Be noted that in the present embodiment touch-control sensing light source 250 is positioned at display medium 102D side and sends touch-control sensing light L1 towards display medium 102D.In this, the pel array 102C that comprises a plurality of composition members has uneven thickness so that the touch-control sensing light L1 that is delivered among the display medium 102D can be formed uniform light field with the display surface S1 at touch-control sensing panel 102 by pel array 102C reflection and scattering.In case user's finger F touches display surface S1; Touch-control sensing light L1 can be by finger F reflection and scattering; Therefore and be integrated in sensor in the touch-control sensing panel 102 (be not illustrated in Fig. 6, but can with reference to Figure 1B) and can receive the touch-control sensing light L2 that is reflected with scattering to judge touch location.
Generally speaking, be radiated on the Photosensing Units T3 in order to make the touch-control sensing light L2 that is reflected with scattering, chromatic filter layer 102F can have a penetration window W on Photosensing Units T3.In view of the above, the touch-control sensing light L2 with scattering of being reflected can directly penetrate substrate 102A and be radiated on the Photosensing Units T3, to promote by the touch-control sensing light L2 intensity of being reflected of receiving of Photosensing Units T3 with scattering.Yet the also penetrable substrate 102A excessively of surround lighting also is radiated on the Photosensing Units T3, and possibly cause the sensing mistake based on following reason.
Fig. 7 representes the absorptivity by the Photosensing Units that thin film transistor (TFT) constituted with amorphous silicon passage.According to Fig. 7, the Photosensing Units that thin film transistor (TFT) constituted with amorphous silicon passage has different absorptivities under different wave length.Particularly, this kind Photosensing Units is comparatively showing to the absorptivity 700 nanometers from 500 nanometers at wavelength.The remolding sensitivity of Photosensing Units under infrared light is much lower to the sensitivity 700 nanometers from 500 nanometers at wavelength.In this case, if touch-control sensing light is designed to infrared light, then wavelength shines at the photocurrent that also can cause on the Photosensing Units Photosensing Units from 500 nanometers to the surround lighting 700 nanometers, touches signal and be mistaken for.So, the sensing mistake will take place.In order to improve sensitivity, touch-control sensing panel 102 can exemplarily be designed to ensuing embodiment.Be noted that ensuing embodiment does not use to limit category of the present invention.
Fig. 8 is the synoptic diagram of the touch-control sensing panel of the seventh embodiment of the present invention.Please with reference to Fig. 8, touch-control sensing panel 104 is similar with the touch-control sensing panel 102 shown in Fig. 6 in fact, and similar element no longer this gives unnecessary details.In this embodiment; The chromatic filter layer 102F of touch-control sensing panel 104 comprises a Red lightscreening plate, a green color filter and a blue color filter alternate configurations on pel array 102C, and at least one colored filter 104F is positioned on the Photosensing Units T3 of sensor SR.That is to say, dispose colored filter 104F among the penetration window W that in Fig. 6, illustrates.
In the present embodiment, colored filter 104F can be a Red lightscreening plate, and the light transmittance of this colored filter 104F is illustrated among Fig. 9 A, and on Red lightscreening plate is disposed at Photosensing Units the time, the absorptivity of Photosensing Units is illustrated among Fig. 9 B.Be noted that Photosensing Units shows the minimizing that lands at wavelength less than the absorptivity of 570 nanometers after the configuration Red lightscreening plate is on Photosensing Units.Therefore, the sensitivity of Photosensing Units T3 is raised and not easily by the ambient light effects of wavelength less than 570 nanometers.In view of the above, sensor SR can have good sensitivity.
Figure 10 is the synoptic diagram of the touch-control sensing panel of the eighth embodiment of the present invention.Please with reference to Figure 10, touch-control sensing panel 106 is similar with the touch-control sensing panel 104 shown in Fig. 8 in fact, and similar element no longer this gives unnecessary details.In this embodiment, the chromatic filter layer 106F of touch-control sensing panel 106 comprises a Red lightscreening plate, a green color filter and a blue color filter alternate configurations on pel array 102C, and two kinds of colored filter 106F
1With 106F
2Mutual storehouse, and be positioned on the Photosensing Units T3 of sensor SR.
In the present embodiment, colored filter 106F
1With colored filter 106F
2Can be respectively a Red lightscreening plate and a blue color filter, and this laminated colored filter 106F
1With colored filter 106F
2Light transmittance be illustrated among Figure 11 A, and when this Red lightscreening plate and blue color filter were disposed on the Photosensing Units, the absorptivity of Photosensing Units T3 was illustrated among Figure 11 B.Be noted that at configuration colored filter 106F
1With colored filter 106F
2Laminated after Photosensing Units T3 goes up, Photosensing Units T3 shows the minimizing that lands at wavelength less than the absorptivity of 750 nanometers.Therefore, the sensitivity of Photosensing Units T3 is raised and not easily by the ambient light effects of wavelength less than 750 nanometers.
In addition, if colored filter 106F
1With colored filter 106F
2Respectively be a Red lightscreening plate and a green color filter, the colored filter 106F that this is laminated
1With colored filter 106F
2Light transmittance be illustrated among Figure 12 A, and the absorptivity of Photosensing Units T3 is illustrated among Figure 12 B.Be noted that at configuration colored filter 106F
1With colored filter 106F
2Laminated after Photosensing Units T3 goes up, Photosensing Units T3 at wavelength less than 570 nanometers and near the 650 how apparent minimizings that land of absorptivity the rice.Therefore, the sensitivity of Photosensing Units T3 be raised and not easily by wavelength less than 750 rice and how near 650 ambient light effects the rice how.
Figure 13 is the synoptic diagram of the touch-control sensing panel of the nineth embodiment of the present invention.Please with reference to Figure 13, touch-control sensing panel 108 is similar with the touch-control sensing panel 104 shown in Fig. 8 in fact, and similar therebetween element no longer this gives unnecessary details.In an embodiment of the present invention, the chromatic filter layer 108F of touch-control sensing panel 108 comprises that a Red lightscreening plate, a green color filter and a blue color filter alternate configurations are in the top of pel array 102C.Three kinds of colored filter 108F
1, 108F
2With 108F
3Mutual storehouse, and be positioned on the Photosensing Units T3 of sensor SR.
In the present embodiment, colored filter 108F
1, 108F
2With 108F
3Can be respectively a Red lightscreening plate, a green color filter and a blue color filter, and this laminated colored filter 108F
1, 108F
2With 108F
3Light transmittance be illustrated among Figure 14 A, and this moment, the absorptivity of Photosensing Units T3 is illustrated among Figure 14 B.Be noted that at configuration colored filter 108F
1, 108F
2With 108F
3Laminated after Photosensing Units T3 goes up, Photosensing Units T3 wavelength less than 750 how the absorptivity of rice show the minimizing that lands.Therefore, the sensitivity of Photosensing Units T3 be raised and not easily by wavelength less than 750 ambient light effects of rice how.
Be noted that the above-mentioned colored filter that is positioned on the Photosensing Units T3 is merely for example, is not intended limit scope of the present invention.In one embodiment, the optical filter that is positioned on the Photosensing Units T3 can be formed by a light-locking material, and the wavelength that light had that this light-locking material can stop is different from the touch-control sensing light wavelength that the touch-control sensing light source is sent.In another embodiment, the touch-control sensing panel can comprise a black matrix, and this black matrix can be positioned at the display surface top of display element T3, and black matrix can only let near infrared light pass through.That is to say that the optical filter that is positioned on the Photosensing Units T3 is not limited to a colored filter.
In sum, the touch-control sensing light source is disposed at the touch-control sensing panel periphery so that required touch-control sensing light to be provided, thereby the received light of sensor can be avoided by ambient light effects.That is to say, the power of surround lighting no matter, sensor can have good sensitivity.In addition, the touch-control sensing panel can have specific optical filter, this optical filter is disposed on the sensor can further promotes the sensitivity of sensor, and help avoiding the sensing mistake.
Though the present invention discloses as above with embodiment; Right its is not in order to limit the present invention; Has common knowledge the knowledgeable in the technical field under any; Do not breaking away from the spirit and scope of the present invention, when doing a little change and retouching, so protection scope of the present invention is as the criterion when looking appended the claim scope person of defining.
Claims (18)
1. touch-control sensing display device comprises:
One touch-control sensing panel has a display surface and comprises a pel array and be disposed at the display medium on this pel array that wherein this pel array has a plurality of dot structures, and at least one this dot structure comprises:
An one scan line and a data line, interlaced with each other;
One active component electrically connects this sweep trace and this data line;
One pixel electrode electrically connects this active component;
One capacitance electrode line, this pixel electrode of electrical couplings;
One read line, configured in parallel is in this data line;
One sensor electrically connects this sweep trace and this read line, and wherein this sensor is connected to this display surface of sense face lateral of this capacitance electrode line and this sensor; And
At least one touch-control sensing light source is disposed at around this touch-control sensing panel and provides a touch-control sensing light to form a uniform light field at this display surface.
2. touch-control sensing display device according to claim 1 also comprises a back light unit, be configured in the back side of this touch-control sensing panel with respect to this display surface, and this back light unit sends a display light towards this display surface.
3. touch-control sensing display device according to claim 2, wherein this touch-control sensing light source is disposed in this back light unit to send this touch-control sensing light towards this display surface.
4. touch-control sensing display device according to claim 2 should show wherein that light wavelength was inequality in this touch-control sensing light wavelength.
5. touch-control sensing display device according to claim 1, wherein this touch-control sensing invisible light only.
6. touch-control sensing display device according to claim 1 before wherein this touch-control sensing light source is configured in this display surface, and is sent this touch-control sensing light to form this uniform light field at this display surface towards this display surface.
7. touch-control sensing display device according to claim 6, wherein this touch-control sensing light source comprises that at least two light emitting diodes are positioned at this touch-control sensing panel periphery.
8. touch-control sensing display device according to claim 6, wherein this touch-control sensing light source comprises a LASER Light Source and the lens before this LASER Light Source, and this touch-control sensing light source can provide the tentiform touch-control sensing that is parallel to this display surface in fact light.
9. touch-control sensing display device according to claim 1; Wherein this touch-control sensing light source comprises a light emitting source and a LGP; This light emitting source is positioned at this LGP side and sends this touch-control sensing light towards this LGP, and this touch-control sensing light transmits to form this uniform light field in this LGP through the total reflection effect of this LGP in fact.
10. touch-control sensing display device according to claim 1; Wherein this touch-control sensing light source comprises a light emitting source and a light diffusing sheet; This light emitting source is positioned at this light diffusing sheet side and sends this touch-control sensing light towards this light diffusing sheet, and this touch-control sensing light scatters out to form this uniform light field from this light diffusing sheet in fact.
11. touch-control sensing display device according to claim 10, wherein this light diffusing sheet has a plurality of diffusion particles and is distributed in wherein.
12. touch-control sensing display device according to claim 1, wherein this touch-control sensing light source is disposed at this display medium side and sends this touch-control sensing light to form this uniform light field towards this display medium.
13. touch-control sensing display device according to claim 1, wherein this touch-control sensing panel comprises that also a filter layer and this display medium are disposed between this filter layer and this pel array.
14. touch-control sensing display device according to claim 13, wherein this filter layer comprises that a Red lightscreening plate, a green color filter and a blue color filter alternate configurations are on this pel array.
15. touch-control sensing display device according to claim 14, wherein this Red lightscreening plate, this green color filter and this blue color filter at least one further be positioned at this sensor top.
16. touch-control sensing display device according to claim 13, wherein this filter layer comprises that one is suitable for stopping the optical filter of this visible light, and this optical filter is positioned at the sensing face top of this sensor.
17. touch-control sensing display device according to claim 1, wherein this touch-control sensing panel also comprises a black matrix, is positioned at the sensing face top of this sensor.
18. touch-control sensing display device according to claim 17 wherein should can only let near infrared light pass through by black matrix.
Applications Claiming Priority (2)
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| US201061425974P | 2010-12-22 | 2010-12-22 | |
| US61/425,974 | 2010-12-22 |
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| CN102662527A true CN102662527A (en) | 2012-09-12 |
| CN102662527B CN102662527B (en) | 2015-08-26 |
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