CN102662527B - Touch-control sensing display device - Google Patents
Touch-control sensing display device Download PDFInfo
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- CN102662527B CN102662527B CN201110436031.8A CN201110436031A CN102662527B CN 102662527 B CN102662527 B CN 102662527B CN 201110436031 A CN201110436031 A CN 201110436031A CN 102662527 B CN102662527 B CN 102662527B
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Abstract
A kind of touch-control sensing display device, comprises a touch panel and a touch-control sensing light source around thereof.Touch panel has a display surface and comprises a pel array, and this pel array comprises multiple dot structure and the display medium being configured at pel array.One of them dot structure comprises scan line, crisscrosses a data line of sweep trace, is electrically connected sweep trace and an active component of data line, the pixel electrode being electrically connected active element, a capacitance electrode line of electrical couplings pixel electrode, the reading line being parallel to data line and electric connection sweep trace and the sensor reading line, and sensor has the sensing face towards display surface.Touch-control sensing light source provides a touch-control sensing light to form a uniform light field at display surface.And at least one filter layer is on sensor.
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 making rapid progress and Information application widely of information and wireless communication technique, 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 is generally 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.
For optical touch panel, optical touch panel is operable in reflection sensing modes or shade sensing modes.In reflection sensing modes, when user touches touching face with its finger, the light on optical touch panel surface can be scattered and reflection.So the OPTICAL SENSORS be positioned under touch points can receive and be reflected with the light be scattered to produce a sensing signal.This optical touch panel can judge on optical touch panel by touch location according to sensing signal.But, except touch location reflect the light with scattering, OPTICAL SENSORS also may receive surround lighting.Therefore, when surround lighting is too strong, this kind of optical touch panel may produce operating mistake or false sense survey.
In addition, in shade sensing modes, when user touches touching face with its finger, the light be incident in OPTICAL SENSORS can crested.So, be positioned at the OPTICAL SENSORS of touching a little and sense shade to produce a sensing signal.This optical touch panel can according to sensing signal judge on optical touch panel by touch location.But when surround lighting is too weak, because when dark, touch control sensor correctly cannot judge shade, and this kind of optical touch panel may produce operating mistake.
Summary of the invention
Accordingly, the invention provides a kind of touch-control sensing display device, it has good touch-control sensing sensitivity (sensitivity).
In one embodiment of this invention, the invention provides a kind of touch-control sensing display device and comprise a touch panel and a touch-control sensing light source.Touch panel has a display surface and comprises a pel array and the display medium be configured on this pel array, and wherein above-mentioned pel array comprises multiple dot structure.One of them dot structure comprises scan line, a data line, an active component, a pixel electrode, a capacitance electrode line, reading line and a sensor.Sweep trace and data line interlaced with each other.Active component is electrically connected sweep trace and data line.Pixel electrode is electrically connected active element.Capacitance electrode line electrical couplings pixel electrode.Read line and data line configured in parallel.Sensor is electrically connected sweep trace and reads line, wherein sensor be connected to the capacitance electrode line of periphery and a sensing face of sensor towards display surface.Touch-control sensing light source to be configured in around touch panel and to provide 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 relative to display surface of touch panel.In one embodiment, touch-control sensing light source is configured in back light unit to send touch-control sensing light towards display surface.
In one embodiment of this invention, the wavelength of display light is different from the wavelength of aforementioned touch-control sensing light.
In one embodiment of this invention, an aforementioned touch-control sensing only invisible light.
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, touch-control sensing light source comprises at least two light emitting diodes and is positioned at touch panel periphery.In another embodiment, touch-control sensing light source can comprise a LASER Light Source and lens, and before these lens are positioned at LASER Light Source, and 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 substantially parallel to display surface.
In one embodiment of this invention, aforementioned touch-control sensing light source comprises a light emitting source and a light guide plate, it is other and send touch-control sensing light that light emitting source is positioned at light guide plate, and touch-control sensing light is transmitted in light guide plate essentially by total reflection (the total inner reflection) effect of light guide plate to form uniform light field.
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 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 multiple diffusion particle and is distributed in wherein.
In one embodiment of this invention, aforementioned touch-control sensing light source is configured at 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 panel also comprises a filter layer and display medium is configured between filter layer and pel array.Specifically, filter layer can comprise the Red lightscreening plate be alternately configured on pixel electrode, a green color filter and a blue color filter, wherein Red lightscreening plate, green color filter and blue color filter at least one can be positioned at further on the sensor of each dot structure.In addition, filter layer can comprise the optical filter being suitable for blocking visible ray.
Based on above-mentioned, described 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 described touch-control sensing display device is used under dark or bright environment, and the sensor be integrated in touch panel correctly can sense touching of user and produce corresponding sensing signal.That is, described touch-control sensing display device has good touch-control sensing sensitivity.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate institute's accompanying drawings to be described in detail below.
Accompanying drawing explanation
Figure 1A is the schematic diagram of the touch-control sensing display device of the first embodiment of the present invention.
Figure 1B is the schematic equivalent circuit of the pel array being illustrated in touch-control sensing display device in Figure 1A.
Fig. 2 is the schematic diagram of the touch-control sensing display device of the second embodiment of the present invention.
Fig. 3 is the schematic diagram of the touch-control sensing display device of the third embodiment of the present invention.
Fig. 4 is the schematic diagram of the touch-control sensing display device of the fourth embodiment of the present invention.
Fig. 5 is the schematic diagram of the touch-control sensing display device of the fifth embodiment of the present invention.
Fig. 6 is the schematic diagram of the touch-control sensing display device of the sixth embodiment of the present invention.
Fig. 7 shows the absorptivity of the Photosensing Units be made up of the thin film transistor (TFT) with amorphous silicon passage.
Fig. 8 is the schematic diagram of the touch panel of the seventh embodiment of the present invention.
Fig. 9 A shows the light transmittance of Red lightscreening plate.
When Fig. 9 B display Red lightscreening plate is configured on Photosensing Units, the absorptivity of Photosensing Units.
Figure 10 is the schematic diagram of the touch panel of the eighth embodiment of the present invention.
Figure 11 A shows the laminated light transmittance of Red lightscreening plate and blue color filter.
It is laminated when being configured on Photosensing Units that Figure 11 B shows Red lightscreening plate and blue color filter, the absorptivity of Photosensing Units.
Figure 12 A shows the laminated light transmittance of Red lightscreening plate and green color filter.
It is laminated when being configured on Photosensing Units that Figure 12 B shows Red lightscreening plate and green color filter, the absorptivity of Photosensing Units.
Figure 13 is the schematic diagram of the touch panel of the ninth embodiment of the present invention.
Figure 14 A shows the laminated light transmittance of Red lightscreening plate, green color filter and blue color filter.
Figure 14 B shows Red lightscreening plate, green color filter and blue color filter laminated when being configured on Photosensing Units, the absorptivity of Photosensing Units.
[main element label declaration]
10,20,30,40,50,60: touch-control sensing display device
100,102,104,106,108: touch 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: touch-control sensing light source
222: LASER Light Source 224: lens
232,242: light emitting source 234: light guide plate
244: light diffusing sheet 246: diffusion particle
300: back light unit S1: display surface
S2: back side L1: touch-control sensing light
L2: by the touch-control sensing light L3 of reflection with scattering: 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 described in more detail in following with accompanying drawing.In the conceived case, the identical reference number used in accompanying drawing and its description refer to same or analogous part.
Figure 1A is the schematic diagram of the touch-control sensing display device of the first embodiment of the present invention, and Figure 1B is the schematic equivalent circuit of the pel array being illustrated in touch-control sensing display device in Figure 1A.Please refer to Figure 1A and Figure 1B, touch-control sensing display device 10 at least comprises touch panel 100 and a touch-control sensing light source 200.Touch panel 100 has a display surface S1 and comprises a pel array 100A and the display medium 100B be configured on pel array 100A.Touch-control sensing light source 200 to be configured in around touch panel 100 and to provide a touch-control sensing light L1 to form a uniform light field at display surface S1.Specifically, display medium 100B can be sandwiched between two substrates 100C and 100D, and pel array 100A is configured on substrate 100C to drive display medium 100B.
In the present embodiment, pel array 100A comprise multiple dot structure Pn and one of them dot structure Pn comprise scan line SLn, a data line DLn, an active component T1, a pixel electrode PE, a capacitance electrode line CLn, one read a line RLn and sensor SR.Sweep trace SLn and data line DLn is interlaced with each other.Active component T1 is electrically connected sweep trace SLn and data line DLn.Pixel electrode PE is electrically connected 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 is electrically connected sweep trace SLn and reads line RLn, wherein sensor SR be connected to capacitance electrode line CLn and a sensing face (not illustrating) of sensor SR 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...), a plurality of data lines (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.But the present invention's not limit 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 is only configured in pixel structure Pn.That is, not being that each dot structure Pn has sensor SR, is the quantity that can be less than dot structure Pn with the quantity of sensor SR.
In addition, sensor SR can be an optical sensor, and sensor SR comprises an an on-off element T2 and Photosensing Units T3.On-off element T2 is electrically connected sweep trace SL
n+1and read line RL
n, and Photosensing Units T3 is electrically connected on-off element T2 and the capacitance electrode line CL that connection is contiguous
n.In dot structure Pn, the on-off element T2 of sensor SR connects contiguous sweep trace SL
n+1, instead of connect the sweep trace SL with pixel electrode PE electrical couplings in dot structure Pn
n.Therefore, 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 with sweep trace SL that is pixel electrode PE electrical couplings
n.
As shown in Figure 1A and Figure 1B, when user is by an object, be such as the finger F of user, touch the display surface S1 of touch panel 100, touch-control sensing light L1 is by finger F scattering and reflection.The Photosensing Units T3 of the sensor SR under finger F touch location can because being produced photocurrent by the touch-control sensing light L2 of reflection and scattering.Once on-off element T2 is unlocked, the photocurrent resulted from OPTICAL SENSORS T3 can transmit from OPTICAL SENSORS T3 immediately and read line RL
ndirectly and immediately can read the photocurrent of output.Accordingly, sensor SR does not have any component in order to store electric charge, such as, be electric capacity, and can provide and simply sense design.In addition, by same scan line SL
n+1the sensor SR controlled is connected to different reading line RL separately
n, RL
n+1... therefore by same scan line SL
n+1the sensing signal that the sensor SR controlled produces is read individually, can avoid by same scan line SL
n+1signal disturbing between the sensor SR controlled, uses the sensitivity promoting sensor SR further.
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 also can comprise the back side S2 that a back light unit 300 is configured at touch panel 100, and this back side S2 is relative to display surface S1, and back light unit 300 is applicable to sending the display light L3 by display surface S1.In addition, in one embodiment of this invention, the quantity of touch-control sensing light source 200 can be multiple and touch-control sensing light source 200 is integrated among back light unit 300.For example, touch-control sensing light source 200 can be configured at multiple light emitting diode in back light unit 300 and when back light unit 300 is for these light emitting diodes during direct-type backlight unit are with arrayed, but the present invention is not limited thereto.In other embodiments, when back light unit 300 is side light emitting type backlight unit, touch-control sensing light source 200 can be the side being arranged in a vertical bar and being 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.
It should be noted that between touch-control sensing function time suitable to moulding, provide touch-control sensing light L1, therefore no matter environmental light intensity or weak, sensor SR can normally operate touch-control sensing light source 200 Absorbable organic halogens.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 have good sensitivity to touch-control sensing light L1.In addition, touch-control sensing light L1 can be invisible light, such as, be infrared light.But in category of the present invention, the wavelength of touch-control sensing light L1 should not limit to by this.
Fig. 2 is the schematic diagram of the touch-control sensing display device of the second embodiment of the present invention.Please refer to Fig. 2, the composition component of touch-control sensing display device 20 is similar to the composition component of the touch-control sensing display device 10 of the first embodiment in fact.Touch-control sensing display device 10 and the difference of touch-control sensing display device 20 be mainly the configuration of touch-control sensing light source and touch-control sensing display device 20 other form component and can refer to explanation in a first embodiment.Specifically, in the present embodiment, the touch-control sensing light source 210 of touch-control sensing display device 20 is configured at before the display surface S1 of touch panel 100.Touch-control sensing light source 210 can be two or multiple light emitting diode being positioned at touch panel 100 periphery.
In the present embodiment, before touch-control sensing light source 210 is positioned at display surface S1 and towards display surface S1 send touch-control sensing light L1 with display surface S1 formed uniform light field LF.When the finger F of user touches touch-control sensing display device 20, touch-control sensing light L1 can crested and uniform light field LF is disturbed in touch location.In this, the sensor (be not illustrated in Fig. 2, but can refer to Figure 1B) be integrated in touch panel 100 can sense the shade in touch location and produce corresponding touching signals.That is, touch-control sensing display device 20 can have shade sensing modes touch-control sensing function.
Fig. 3 is the schematic diagram of the touch-control sensing display device of the third embodiment of the present invention.Please refer to Fig. 3, touch-control sensing display device 30 is similar to the touch-control sensing display device 20 of the second embodiment in fact.Touch-control sensing display device 30 is mainly the kind of touch-control sensing light source with the difference of touch-control sensing display device 20, and other composition component of touch-control sensing display device 30 can with reference to the explanation in first and second embodiment.Specifically, in the present embodiment, before the touch-control sensing light source 220 of touch-control sensing display device 30 is configured at the display surface S1 of touch panel 100 and to be positioned at touch 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 substantially parallel to display surface S1.
In the present embodiment, when the finger F of user touches touch-control sensing display device 30, can be scattered and reflection at the touch-control sensing light L1 of touch location.In this, the sensor (be not illustrated in Fig. 3, but can refer to Figure 1B) be integrated in touch panel 100 can sense in touch location and reflected with the touch-control sensing light L2 of scattering and produce corresponding touching signals.That is, touch-control sensing display device 30 can have reflection sensing modes touch-control sensing function.
Fig. 4 is the schematic diagram of the touch-control sensing display device of the fourth embodiment of the present invention.Please refer to Fig. 4, touch-control sensing display device 40 is similar to the touch-control sensing display device 20 of the second embodiment in fact.Touch-control sensing display device 40 and the difference of touch-control sensing display device 20 be mainly the configuration of touch-control sensing light source and touch-control sensing display device 40 other form component can with reference to the explanation in first and second embodiment.Specifically, in the present embodiment, the touch-control sensing light source 230 of touch-control sensing display device 40 comprises light emitting source 232 and a light guide plate 234, and this light guide plate 234 is positioned in touch panel 100.It is other and send touch-control sensing light L1 that light emitting source 232 is positioned at light guide plate 234, and touch-control sensing light L1 is transmitted in light guide plate 234 essentially by the total reflection effect of light guide plate 234 and forms uniform light field with the display surface S1 in touch panel 100.That is, light guide plate 234 has specific refractive index so that touch-control sensing light L1 can be subject to total reflection effect in light guide plate 234.
In the present embodiment, when the finger F of user touches touch-control sensing display device 40, touch-control sensing light L1 can be disturbed in the TIR effect of light guide plate 234, and touch-control sensing light L1 therefore can from light guide plate 234 by outside scattering and transmitting in touch location.In addition, the touch-control sensing light L1 of outwards injection can by finger F scattering and reflection.In this, the sensor (be not illustrated in Fig. 4, but can refer to Figure 1B) be integrated in touch panel 100 can sense by the touch-control sensing light L2 of reflection with scattering in touch location, and produce corresponding touching signals.That is, touch-control sensing display device 40 can have reflection sensing modes touch-control sensing function.
Fig. 5 is the schematic diagram of the touch-control sensing display device of the fifth embodiment of the present invention.Please refer to Fig. 5, touch-control sensing display device 50 is similar to the touch-control sensing display device 40 of the 4th embodiment in fact.Touch-control sensing display device 50 and the difference of touch-control sensing display device 40 be mainly the configuration of touch-control sensing light source and touch-control sensing display device 50 other form component can with reference to the explanation in first, second and the 4th embodiment.Specifically, in the present embodiment, the touch-control sensing light source 240 of touch-control sensing display device 50 comprises light emitting source 242 and a light diffusing sheet 244.Light diffusing sheet 244 is positioned at above the display surface S1 of touch panel 100.Light emitting source 242 is positioned at light diffusing sheet 244 side and sends touch-control sensing light L1 towards light diffusing sheet 244, and touch-control sensing light L1 scatters out from light diffusing sheet 244 with the display surface S1 formation uniform light field in touch panel 100 in fact.In one embodiment, light diffusing sheet 244 can have multiple diffusion particle 246 and be distributed in wherein, but the present invention is not as limit.
In the present embodiment, when the finger F of user touches touch-control sensing display device 50, the touch-control sensing light L1 radiated away from touch panel 100 can be scattered and reflection.Therefore, to radiate and the intensity of irradiating the touch-control sensing light L1 of the sensor (be not illustrated in Fig. 5, but can refer to Figure 1B) be integrated in touch panel 100 can be promoted towards touch panel 100.Accordingly, sensor, according to the lifting intensity of the touch-control sensing light L1 received, produces corresponding touching signals movable to perform touch-control sensing.That is, touch-control sensing display device 50 can have reflection sensing modes touch-control sensing function.
Fig. 6 is the schematic diagram of the touch-control sensing display device of the sixth embodiment of the present invention.Please refer to Fig. 6, touch-control sensing display device 60 comprises touch panel 102 and touch-control sensing light source 250.Touch panel 102 comprises two substrates 102A and 102B, a pel array 102C, a display medium 102D, a counter electrode 102E and a chromatic filter layer 102F.Display medium 102D is configured between substrate 102A and 102B, and can be, but does not limit, a liquid crystal layer.Pel array 102C is configured on substrate 102B to drive display medium 102D.Counter electrode 102E to be configured on substrate 102A and relative to pel array 102C, and chromatic filter layer 102F is between counter electrode 102E and substrate 102A.In this, pel array 102C is in fact similar in appearance to pel array 100A in the first embodiment and the composition component of pel array 102C can the composition component of reference pixels array 100A, and Fig. 6 only schematically indicates on-off element T2 and the Photosensing Units T3 of sensor SR.
It should 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 comprising multiple composition component has uneven thickness so that the touch-control sensing light L1 be delivered in display medium 102D can be reflected by pel array 102C form uniform light field with scattering with the display surface S1 in touch panel 102.Once the finger F of user touches display surface S1, touch-control sensing light L1 can be reflected and scattering by finger F, and the sensor (be not illustrated in Fig. 6, but can refer to Figure 1B) be therefore integrated in touch panel 102 can to receive by reflection with the touch-control sensing light L2 of scattering to judge touch location.
Generally speaking, in order to make the touch-control sensing light L2 by reflecting with scattering be radiated on Photosensing Units T3, chromatic filter layer 102F can have a penetration window W on Photosensing Units T3.Accordingly, can be directly perforated through substrate 102A by reflection with the touch-control sensing light L2 of scattering and be radiated on Photosensing Units T3, with promote by Photosensing Units T3 receive by the touch-control sensing light L2 intensity of reflection with scattering.But, surround lighting also transparent substrate 102A being radiated on Photosensing Units T3, and sensing mistake may be caused based on following reason.
Fig. 7 represents the absorptivity of the Photosensing Units be made up of the thin film transistor (TFT) with amorphous silicon passage.According to Fig. 7, the Photosensing Units that the thin film transistor (TFT) with amorphous silicon passage is formed has different absorptivities at different wavelengths.Specifically, the absorptivity of this kind of Photosensing Units wavelength is from 500 nanometers to 700 nanometers comparatively shows.The sensitivity of the remolding sensitivity of Photosensing Units under infrared light wavelength is from 500 nanometers to 700 nanometers is much lower.In this case, if touch-control sensing light is designed to infrared light, then wavelength from 500 nanometers to 700 nanometers surround lighting be radiated at Photosensing Units and also can cause the photocurrent in Photosensing Units, and be mistaken for and touch signal.So, sense mistake will occur.In order to improve sensitivity, touch panel 102 can exemplarily be designed to ensuing embodiment.Be noted that ensuing embodiment is not applied to limit category of the present invention.
Fig. 8 is the schematic diagram of the touch panel of the seventh embodiment of the present invention.Please refer to Fig. 8, touch panel 104 is similar to the touch panel 102 shown in Fig. 6 in fact, and similar element no longer this repeats.In this embodiment, the chromatic filter layer 102F of touch panel 104 comprises a Red lightscreening plate, a green color filter and a blue color filter and is alternately configured on pel array 102C, and at least one colored filter 104F is positioned on the Photosensing Units T3 of sensor SR.That is, colored filter 104F is configured with in the penetration window W illustrated in figure 6.
In the present embodiment, colored filter 104F can be a Red lightscreening plate, and the light transmittance of this colored filter 104F is illustrated in Fig. 9 A, and when Red lightscreening plate is configured on Photosensing Units, the absorptivity of Photosensing Units is illustrated in Fig. 9 B.Be noted that after configuration Red lightscreening plate is on Photosensing Units, Photosensing Units is less than the aobvious minimizing that lands of absorptivity of 570 nanometers at wavelength.Therefore, the sensitivity of Photosensing Units T3 is promoted and is not less than the ambient light effects of 570 nanometers easily by wavelength.Accordingly, sensor SR can have good sensitivity.
Figure 10 is the schematic diagram of the touch panel of the eighth embodiment of the present invention.Please refer to Figure 10, touch panel 106 is similar to the touch panel 104 shown in Fig. 8 in fact, and similar element no longer this repeats.In this embodiment, the chromatic filter layer 106F of touch panel 106 comprises a Red lightscreening plate, a green color filter and a blue color filter and is alternately configured on pel array 102C, and two kinds of colored filter 106F
1with 106F
2mutual storehouse, and on the Photosensing Units T3 being positioned at sensor SR.
In the present embodiment, colored filter 106F
1with colored filter 106F
2can be a Red lightscreening plate and a blue color filter respectively, and this laminated colored filter 106F
1with colored filter 106F
2light transmittance be illustrated in Figure 11 A, and when this Red lightscreening plate and blue color filter are configured on Photosensing Units, the absorptivity of Photosensing Units T3 is illustrated in Figure 11 B.Be noted that at configuration colored filter 106F
1with colored filter 106F
2laminated on Photosensing Units T3 after, Photosensing Units T3 is less than the aobvious minimizing that lands of absorptivity of 750 nanometers at wavelength.Therefore, the sensitivity of Photosensing Units T3 is promoted and is not less than the ambient light effects of 750 nanometers easily by wavelength.
In addition, if colored filter 106F
1with colored filter 106F
2be respectively a Red lightscreening plate and a green color filter, this laminated colored filter 106F
1with colored filter 106F
2light transmittance be illustrated in Figure 12 A, and the absorptivity of Photosensing Units T3 is illustrated in Figure 12 B.Be noted that at configuration colored filter 106F
1with colored filter 106F
2laminated on Photosensing Units T3 after, Photosensing Units T3 is less than 570 nanometers and the aobvious minimizing that lands of the absorptivity near 650 how rice at wavelength.Therefore, the sensitivity of Photosensing Units T3 is promoted and is not less than 750 how rice and the ambient light effects near 650 how rice by wavelength easily.
Figure 13 is the schematic diagram of the touch panel of the ninth embodiment of the present invention.Please refer to Figure 13, touch panel 108 is similar to the touch panel 104 shown in Fig. 8 in fact, and element similar therebetween no longer this repeats.In an embodiment of the present invention, the chromatic filter layer 108F of touch panel 108 comprises the top that a Red lightscreening plate, a green color filter and a blue color filter are alternately configured at pel array 102C.Three kinds of colored filter 108F
1, 108F
2with 108F
3mutual storehouse, and on the Photosensing Units T3 being positioned at sensor SR.
In the present embodiment, colored filter 108F
1, 108F
2with 108F
3can be a Red lightscreening plate, a green color filter and a blue color filter respectively, and this laminated colored filter 108F
1, 108F
2with 108F
3light transmittance be illustrated in Figure 14 A, and now, the absorptivity of Photosensing Units T3 is illustrated in Figure 14 B.Be noted that at configuration colored filter 108F
1, 108F
2with 108F
3laminated on Photosensing Units T3 after, Photosensing Units T3 is less than the aobvious minimizing that lands of absorptivity of 750 how rice at wavelength.Therefore, the sensitivity of Photosensing Units T3 is promoted and is not less than the ambient light effects of 750 how rice easily by wavelength.
The colored filter be positioned at it should be noted that above-mentioned on Photosensing Units T3 is only citing, is not intended limit scope of the present invention.In one embodiment, the optical filter be positioned on Photosensing Units T3 can be formed by a light-locking material, and the wavelength that the light that this light-locking material can stop has is different from the wavelength of the touch-control sensing light that touch-control sensing light source sends.In another embodiment, touch panel can comprise a black matrix, and this black matrix can be positioned at above the display surface of display element T3, and black matrix can only allow near infrared light pass through.That is, the optical filter be positioned on Photosensing Units T3 is not limited to a colored filter.
In sum, it is peripheral to provide required touch-control sensing light that touch-control sensing light source is configured at touch panel, and the light thus received by sensor can be avoided by ambient light effects.That is, the no matter power of surround lighting, sensor can have good sensitivity.In addition, touch panel can have specific optical filter, this optical filter is configured at the sensitivity that sensor can promote further sensor, and is conducive to avoiding sensing mistake.
Although the present invention discloses as above with embodiment; so itself and be not used to limit the present invention; have in any art and usually know the knowledgeable; without departing from the spirit and scope of the present invention; when doing a little change and retouching, therefore protection scope of the present invention is when being as the criterion depending on the appended right person of defining.
Claims (18)
1. a touch-control sensing display device, comprising:
One touch panel, have a display surface and comprise a pel array and the display medium be configured on this pel array, wherein this pel array has multiple dot structure, and this dot structure at least one comprises:
Scan line and a data line, interlaced with each other;
One active component, is electrically connected this sweep trace and this data line;
One pixel electrode, is electrically connected this active component;
One capacitance electrode line, this pixel electrode of electrical couplings;
One reads line, and configured in parallel is in this data line;
One sensor, comprise an on-off element and a Photosensing Units, this on-off element is electrically connected to this reading line and is different from this sweep trace and is adjacent to another sweep trace of this dot structure, this Photosensing Units is electrically connected this on-off element and is connected to this capacitance electrode line, this sensor be connected to this capacitance electrode line and a sensing face of this sensor towards this display surface, when this on-off element is unlocked, the photocurrent resulted from this Photosensing Units can transmit from this Photosensing Units immediately, and this reading line directly and immediately can read the photocurrent of output, and
At least one touch-control sensing light source to be configured at around this touch panel and to provide 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 panel relative 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 configured 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, wherein the wavelength of this display light is not same as the wavelength of this touch-control sensing light.
5. touch-control sensing display device according to claim 1, wherein this touch-control sensing only invisible light.
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 sends 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 at least two light emitting diodes to be positioned at this touch panel peripheral.
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 light substantially parallel to this display surface.
9. touch-control sensing display device according to claim 1, wherein this touch-control sensing light source comprises a light emitting source and a light guide plate, it is other and send this touch-control sensing light towards this light guide plate that this light emitting source is positioned at this light guide plate, and this touch-control sensing light transmits to form this uniform light field essentially by the total reflection effect of this light guide plate in this light guide plate.
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 multiple diffusion particle and is distributed in wherein.
12. touch-control sensing display device according to claim 1, wherein this touch-control sensing light source is configured 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 panel also comprises a filter layer and this display medium is configured between this filter layer and this pel array.
14. touch-control sensing display device according to claim 13, wherein this filter layer comprises a Red lightscreening plate, a green color filter and a blue color filter and is alternately configured 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 are positioned at above this sensor further.
16. touch-control sensing display device according to claim 13, wherein this filter layer comprises the optical filter that is suitable for block visible light, and this optical filter is positioned at above the sensing face of this sensor.
17. touch-control sensing display device according to claim 1, wherein this touch panel also comprises a black matrix, above the sensing face being positioned at this sensor.
18. touch-control sensing display device according to claim 17, wherein this black matrix can only allow near infrared light pass through.
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| US201061425974P | 2010-12-22 | 2010-12-22 | |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI460638B (en) * | 2013-04-15 | 2014-11-11 | Light guide plate touch device | |
| US20160086044A1 (en) * | 2014-09-24 | 2016-03-24 | Au Optronics Corporation | Optical Device and Optical Scanning Method Thereof |
| US11734944B2 (en) | 2017-08-03 | 2023-08-22 | Himax Technologies Limited | Display device with embedded biometric detection function in active region |
| JP7135360B2 (en) | 2018-03-23 | 2022-09-13 | ヤマハ株式会社 | Light-emitting display switch and sound collecting device |
| TWI667602B (en) * | 2018-07-31 | 2019-08-01 | 友達光電股份有限公司 | Capacitive touchscreen and the driving method thereof |
| CN109782468A (en) * | 2018-12-28 | 2019-05-21 | 惠科股份有限公司 | Display panel and display device |
| TWI772621B (en) * | 2019-03-08 | 2022-08-01 | 聚積科技股份有限公司 | On-screen sensing control method |
| CN115236889B (en) * | 2022-07-25 | 2023-10-13 | 京东方科技集团股份有限公司 | Photosensitive circuit, control method thereof and display panel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1635338A (en) * | 2004-02-19 | 2005-07-06 | 友达光电股份有限公司 | Position encoding sensor, method and system for position in the sensor display device |
| TW200846996A (en) * | 2007-03-29 | 2008-12-01 | Microsoft Corp | Touch sensing using shadow and reflective modes |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55145481A (en) * | 1979-04-28 | 1980-11-13 | Canon Inc | Mos image sensor |
| JP4645822B2 (en) * | 2005-04-19 | 2011-03-09 | ソニー株式会社 | Image display device and object detection method |
| JP2009064074A (en) * | 2007-09-04 | 2009-03-26 | Mitsubishi Electric Corp | Input unit |
| US20100283765A1 (en) * | 2008-03-03 | 2010-11-11 | Sharp Kabushiki Kaisha | Display device having optical sensors |
-
2011
- 2011-12-22 CN CN201110436031.8A patent/CN102662527B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1635338A (en) * | 2004-02-19 | 2005-07-06 | 友达光电股份有限公司 | Position encoding sensor, method and system for position in the sensor display device |
| TW200846996A (en) * | 2007-03-29 | 2008-12-01 | Microsoft Corp | Touch sensing using shadow and reflective modes |
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